CN115573957A - Self-loading and self-unloading garbage truck control system and self-loading and self-unloading garbage truck - Google Patents

Abstract

The invention discloses a control system for a self-loading and unloading garbage truck and the self-loading and unloading garbage truck. The solution includes a lifting oil cylinder, an outrigger oil cylinder and a first valve group. The lifting mechanism performs the lifting operation, the outrigger cylinder is used to drive the outrigger to perform the supporting operation, and the first valve group communicates with the lifting cylinder or the outrigger cylinder through a pipeline. When the piston rod of the outrigger cylinder moves to the first preset position, the outrigger is supported in place, and the rodless cavity of the lifting cylinder starts to enter hydraulic oil; when the piston rod of the lifting cylinder moves to the second preset position, the lifting mechanism Reset in place, the rod cavity of the outrigger oil cylinder begins to enter the hydraulic oil. When performing garbage dumping operations, the lifting cylinder can only start to stretch out the lifting box after the outrigger cylinder is fully extended. When the garbage is dumped and reset, the outrigger cylinder can start to retract and reset only after the lifting cylinder is fully retracted. Thereby improving the safety performance of the self-loading and unloading garbage truck.

Description

Self-loading and unloading garbage truck control system and self-loading and unloading garbage truck

technical field

The invention relates to the technical field of self-loading and unloading garbage trucks, in particular to a control system for self-loading and unloading garbage trucks and the self-loading and unloading garbage trucks.

Background technique

At present, the lifting of the garbage bin and the movement of the outriggers of the self-loading garbage truck are usually controlled separately. When dumping garbage, the outriggers are operated first, and then the outriggers are supported in place, and then the garbage bin is lifted to carry out the garbage dumping operation. When the human operation is not standardized, the lifting operation of the box is started before the outriggers are supported in place, and there is a risk of the whole vehicle tipping over.

Therefore, how to improve the safety performance of the self-loading garbage truck has become a technical problem to be solved urgently by those skilled in the art.

Contents of the invention

The invention provides a self-loading and unloading garbage truck control system and the self-loading and unloading garbage truck to improve the safety performance of the self-loading and unloading garbage truck.

In order to achieve the above object, the present invention provides the following technical solutions:

The invention discloses a control system for a self-loading and unloading garbage truck, which includes a lifting oil cylinder, an outrigger oil cylinder and a first valve group, wherein the piston rod of the lifting oil cylinder is connected with a lifting mechanism to drive the lifting mechanism to perform lifting operations , the outrigger cylinder is used to drive the outrigger to perform support work, the first valve group communicates with the lifting cylinder or the outrigger cylinder through the pipeline, and when the piston rod of the outrigger cylinder moves to the first preset position, the outrigger supports When the lift cylinder is in place, the rodless chamber of the lifting cylinder starts to enter the hydraulic oil; when the piston rod of the lifting cylinder moves to the second preset position, the lifting mechanism is reset to its original position, and the rod chamber of the outrigger cylinder begins to enter hydraulic oil.

In some embodiments of the present invention, the outrigger cylinder is provided with a K port and an L port, and the first preset position is between the K port and the L port;

The lift cylinder is provided with an M port and an N port, and the second preset position is between the M port and the N port.

In some embodiments of the present invention, the first valve group includes a first reversing valve, a first hydraulically controlled one-way valve, a second hydraulically controlled one-way valve, a third hydraulically controlled one-way valve and a balance valve, wherein:

Port A of the first reversing valve communicates with the inlet of the first hydraulic control check valve, and port B of the first reversing valve communicates with the rod cavity of the lift cylinder; when the first reversing valve is in the left position, the first The P port and A port of the reversing valve are connected, and the T port and B port of the first reversing valve are connected; when the first reversing valve is in the right position, the P port and B port of the first reversing valve are connected. The T port and A port of the first reversing valve are connected;

The outlet of the first hydraulically controlled one-way valve communicates with the rodless chamber of the outrigger cylinder, and the hydraulically controlled port of the first hydraulically controlled one-way valve communicates with the B port of the first reversing valve;

The inlet of the second hydraulic control check valve is connected with the K port of the outrigger cylinder, the outlet of the second hydraulic control check valve is connected with the rod cavity of the lifting cylinder, and the hydraulic control port of the second hydraulic control check valve is connected with the lift cylinder. The M port of the lifting cylinder is connected;

The inlet of the third hydraulic control check valve is connected with the inlet of the balance valve, the outlet of the third hydraulic control check valve is connected with the L port of the outrigger cylinder, and the hydraulic control port of the third hydraulic control check valve is connected with the first hydraulic control check valve. The outlet of the one-way valve is connected;

The outlet of the balance valve communicates with the N port of the lift cylinder.

In some embodiments of the present invention, it also includes a feeding cylinder and a second valve group, the piston rod of the feeding cylinder is connected to the feeding mechanism to drive the feeding mechanism to perform the feeding mode; the second valve group communicates with the The feeding oil cylinder or the lifting oil cylinder are connected; the second valve group works together, so that only one of the rodless chamber of the feeding oil cylinder and the rodless chamber of the lifting oil cylinder enters the hydraulic oil.

In some embodiments of the present invention, the second valve group includes a second reversing valve, a third reversing valve and a relief valve, wherein:

Port A of the second reversing valve communicates with port P of the third reversing valve, port B of the second reversing valve communicates with port P of the first reversing valve, and port P of the second reversing valve communicates with the oil pump. The T port of the second reversing valve is connected with the oil tank; when the second reversing valve is in the left position, the P port and A port of the second reversing valve are connected, and the T port and B port of the second reversing valve are connected; When the second reversing valve is in the right position, the P port and B port of the second reversing valve are connected, and the T port and A port of the second reversing valve are connected;

The T port of the third reversing valve is connected with the T port of the first reversing valve, the A port of the third reversing valve is connected with the rod cavity of the feeding cylinder through the pipeline, and the B port of the third reversing valve is connected with the upper cylinder. The rodless cavity of the material oil cylinder is connected; when the third reversing valve is in the left position, the P port and A port of the third reversing valve are connected, and the T port and B port of the third reversing valve are connected; the third reversing valve When the valve is in the right position, the P port and B port of the third reversing valve are connected, and the T port and A port of the third reversing valve are connected;

Port P of the relief valve communicates with port P of the second reversing valve, and port T of the relief valve communicates with port T of the second reversing valve.

In some embodiments of the present invention, when in the feeding mode, the second reversing valve is in the left position, and the third reversing valve is in the right position; when the feeding is finished, the third reversing valve is in the left position;

When in the lifting mode, the second reversing valve is in the right position, and the first reversing valve is in the right position; when the lifting is finished, the first reversing valve is in the left position.

In some embodiments of the present invention, it also includes a slide oil cylinder and a third valve group, wherein the piston rod of the slide oil cylinder is connected with the scraper mechanism to drive the scraper mechanism to perform the compression operation; the third valve group is connected to the slide plate through a pipeline The oil cylinder or the feeding cylinder are connected, and when the oil pressure in the rodless chamber of the slide cylinder reaches a threshold value, the oil pressure in the rodless chamber of the feeding cylinder is greater than or equal to the oil pressure in the rod chamber of the feeding cylinder.

In some embodiments of the present invention, the third valve group includes a fourth reversing valve, a fifth reversing valve, a sixth reversing valve, a seventh reversing valve and an eighth reversing valve, wherein:

The oil inlet of the fourth reversing valve is connected with the A port of the third reversing valve, and the oil outlet of the fourth reversing valve is connected with the rod cavity of the slide cylinder; when the fourth reversing valve is in the left position, the fourth reversing valve The oil inlet of the reversing valve and the oil outlet of the fourth reversing valve are cut off; when the fourth reversing valve is in the right position, the oil inlet of the fourth reversing valve and the oil outlet of the fourth reversing valve are connected ;

The oil inlet of the fifth reversing valve is connected with the A port of the third reversing valve, the oil outlet of the fifth reversing valve is connected with the oil inlet of the seventh reversing valve, and the oil inlet of the fifth reversing valve and the oil outlet of the fifth reversing valve are cut off; when the fifth reversing valve is in the right position, the oil inlet of the fifth reversing valve is connected to the oil outlet of the fifth reversing valve;

The oil inlet port of the sixth reversing valve is connected with the B port of the third reversing valve, the oil outlet port of the sixth reversing valve and the oil inlet port of the seventh reversing valve are connected with the oil inlet port of the eighth reversing valve ; When the sixth reversing valve is in the left position, the oil inlet of the sixth reversing valve and the oil outlet of the sixth reversing valve are cut off; when the sixth reversing valve is in the right position, the oil inlet of the sixth reversing valve port and the oil outlet port of the sixth reversing valve;

The oil outlet of the seventh reversing valve communicates with the rodless cavity of the slide cylinder; when the seventh reversing valve is in the left position, the oil inlet of the seventh reversing valve and the oil outlet of the seventh reversing valve are cut off; When the seventh reversing valve is in the right position, the oil inlet of the seventh reversing valve is connected with the oil outlet of the seventh reversing valve;

The oil outlet of the eighth reversing valve communicates with the rod cavity of the feeding cylinder; when the eighth reversing valve is in the left position, the oil inlet of the eighth reversing valve and the oil outlet of the eighth reversing valve are cut off; When the eighth reversing valve is in the right position, the oil inlet of the eighth reversing valve is connected with the oil outlet of the eighth reversing valve.

In some embodiments of the present invention, when in the feeding mode, the second reversing valve is in the left position, the third reversing valve is in the right position, the fourth reversing valve, the seventh reversing valve and the eighth reversing valve The valves are all located in the right position, and the fifth and sixth reversing valves are both located in the left position;

When in the upward maintenance mode of the feeding mechanism, the third reversing valve is in the right position, the fifth reversing valve and the eighth reversing valve are both in the right position, the fifth reversing valve, the sixth reversing valve and the seventh reversing valve The reversing valves are all located in the left position;

When it is in the down maintenance mode of the feeding mechanism, the third reversing valve is in the left position, the fifth reversing valve and the eighth reversing valve are in the right position, the fifth reversing valve, the sixth reversing valve and the seventh reversing valve The reversing valves are all located in the left position;

When in the upward maintenance mode of the scraper mechanism, the third reversing valve is in the right position, the fourth reversing valve, the sixth reversing valve and the seventh reversing valve are all in the right position, the fifth reversing valve and the eighth reversing valve are all in the right position. The reversing valves are all located in the left position;

When in the downward maintenance mode of the scraper mechanism, the third reversing valve is in the left position, the fourth reversing valve, the sixth reversing valve and the seventh reversing valve are all in the right position, the fifth reversing valve and the eighth reversing valve are all in the right position. The reversing valves are all in the left position.

In some embodiments of the present invention, it also includes a scraper oil cylinder and a fourth valve group, wherein the piston rod of the scraper oil cylinder is connected with the scraper mechanism, and drives the scraper mechanism to perform the scraper operation; the fourth valve group passes through the pipe The road is connected with the scraper oil cylinder.

In some embodiments of the present invention, the fourth valve group includes a ninth reversing valve and a collecting valve, wherein:

The A port of the ninth reversing valve is connected with the first inlet of the collecting valve, the B port of the ninth reversing valve is connected with the second inlet of the collecting valve, and the P port of the ninth reversing valve is connected with the second reversing valve. The A port of the ninth reversing valve is connected with the B port of the second reversing valve; when the ninth reversing valve is in the left position, the P port of the ninth reversing valve is connected with the A port of the ninth reversing valve Port conduction, the T port of the ninth reversing valve is connected with the B port of the ninth reversing valve; when the ninth reversing valve is in the right position, the P port of the ninth reversing valve and the B port of the ninth reversing valve The T port of the ninth reversing valve is connected with the A port of the ninth reversing valve;

The first outlet of the collecting valve communicates with the rod chamber of the scraper cylinder, and the second outlet of the collecting valve communicates with the rodless chamber of the scraper cylinder.

In some embodiments of the present invention, when the scraper cylinder is in the scraper mode, the second reversing valve is in the left position, the ninth reversing valve is in the left position, and after the scraping ends, the ninth reversing valve is in the right position.

In some embodiments of the present invention, a controller is also included, and the controller controls each valve group to open or close.

The present invention also discloses a self-loading and unloading garbage truck, using the self-loading and unloading garbage truck control system as described above.

It can be seen from the above technical scheme that when the piston rod of the outrigger cylinder moves to the first preset position, the outrigger is supported in place, and the rodless cavity of the lifting cylinder starts to enter hydraulic oil; the piston rod of the lifting cylinder moves to the second preset position. When the preset position is reached, the lifting mechanism returns to its original position, and the rod cavity of the outrigger cylinder begins to enter hydraulic oil. When performing garbage dumping operations, the lifting cylinder can only start to stretch out the lifting box after the outrigger cylinder is fully extended. When the garbage is dumped and reset, the outrigger cylinder can start to retract and reset only after the lifting cylinder is fully retracted. Thereby improving the safety performance of the self-loading and unloading garbage truck.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings that are required in the description of the embodiments or the prior art. Apparently, the accompanying drawings in the following description are only some examples or embodiments of the present invention, and those skilled in the art can also obtain other accompanying drawings according to the provided drawings without creative work. , and the present invention can also be applied to other similar scenarios according to the provided drawings. Unless otherwise apparent from context or otherwise indicated, like reference numerals in the figures represent like structures or operations.

Fig. 1 is a perspective view of a self-loading and unloading garbage truck provided by an embodiment of the present invention;

2 is a schematic diagram of a self-loading and unloading garbage truck control system provided by an embodiment of the present invention;

Fig. 3 is an enlarged schematic diagram of part C in Fig. 2;

Fig. 4 is the enlarged schematic diagram of part D in Fig. 2;

Fig. 5 is the enlarged schematic diagram of part E in Fig. 2;

Figure 6 is an enlarged schematic view of part F in Figure 2;

Among them, 1 is the first reversing valve, 2 is the first hydraulic control check valve, 3 is the second hydraulic control check valve, 4 is the third hydraulic control check valve, 5 is the balance valve, and 6 is the lifting cylinder , 7 is the outrigger cylinder, 8 is the feeding cylinder, 9 is the relief valve, 10 is the second reversing valve, 11 is the third reversing valve, 11 is the third reversing valve, 12 is the slide cylinder, 13 is The fourth reversing valve, 14 is the fifth reversing valve, 15 is the sixth reversing valve, 16 is the seventh reversing valve, 17 is the eighth reversing valve, 19 is the ninth reversing valve, 20 is the flow collector Valve, 21 are oil pumps, and 22 are hydraulic motors.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Refer to Figure 1, self-loading garbage truck: equipment that loads garbage into garbage bins and transports them to garbage treatment plants, including lifting mechanisms, outrigger mechanisms, feeding mechanisms, scraper mechanisms, garbage bins, etc.

Lifting mechanism: lift the trash can to the entrance of the trash can, that is, perform the lifting operation.

Outrigger mechanism: The part that supports the self-loading garbage truck, that is, performs the support operation.

Feeding mechanism 01: the part that pours the garbage in the garbage bin into the garbage bin 03, that is, performs the loading operation.

Scraper Mechanism 02: A component that pours the garbage into the garbage bin 03 at the entrance 04 and pushes the garbage inside the garbage bin 03, and compresses the garbage to a certain extent, that is, performs the scraper operation and compression operation.

Lifting cylinder: When the piston rod of the lifting cylinder is stretched out, the lifting mechanism is driven to perform lifting operations.

Outrigger cylinder, when the piston rod of the outrigger cylinder is stretched out, the outrigger mechanism is driven to support, and when the piston rod of the outrigger cylinder is retracted, the outrigger mechanism is driven to retract, that is, the outrigger mechanism is driven to perform support operations.

Feeding oil cylinder: When the piston rod of the feeding oil cylinder is stretched out, the feeding mechanism is driven to perform the feeding operation, so as to pour the garbage in the garbage bin into the garbage bin 03.

Skateboard oil cylinder: when the piston rod of the skateboard oil cylinder is stretched out, the scraper mechanism 02 is driven to perform compression operation to compress the garbage in the dustbin 03.

Scraper cylinder: When the piston rod of the scraper cylinder is stretched out, the scraper mechanism is driven to perform the scraper operation, so as to push the inside of the garbage net garbage box 03 at the entrance 04 of the garbage box 03.

It can be seen from the description of the background technology that when the lifting operation is started without the outriggers being supported in place, there is a risk of the entire vehicle tipping over.

Referring to Fig. 2, a self-loading and unloading garbage truck control system of the present invention includes a lifting cylinder 6, a leg cylinder 7 and a first valve group, wherein the piston rod of the lifting cylinder 6 is connected with the lifting mechanism to drive the lifting cylinder The lifting mechanism performs the lifting operation, and the outrigger cylinder 7 is used to drive the outrigger to perform the supporting operation. The first valve group communicates with the lifting cylinder 6 or the outrigger cylinder 7 through the pipeline, and moves to the At the first preset position, the outriggers are supported in place, and the rodless cavity of the lifting cylinder 6 starts to enter the hydraulic oil; when the piston rod of the lifting cylinder 6 moves to the second preset position, the lifting mechanism is reset to its place, and the outrigger cylinder The rod chamber of 7 begins to enter hydraulic oil.

In the present invention, when the piston rod of the outrigger cylinder 7 moves to the first preset position, the outrigger is supported in place, and the rodless cavity of the lift cylinder 6 starts to enter hydraulic oil; the piston rod of the lift cylinder 6 moves to the second preset position. When the position is set, the lifting mechanism resets to the right position, and the rod cavity of the outrigger cylinder 7 begins to enter the hydraulic oil. When carrying out garbage dumping operations, the lifting cylinder 6 could start to stretch out the lift case after the outrigger cylinder 7 fully stretched out. When resetting after dumping the garbage, the lifting cylinder 6 is fully retracted and the outrigger cylinder 7 can begin to retract and reset. Thereby improving the safety performance of the self-loading and unloading garbage truck.

In some embodiments of the present invention, the outrigger cylinder 7 is provided with a K port and an L port, and the first preset position is between the K port and the L port; the lift cylinder 6 is provided with an M port and an N port, and the M port and the N port Between is the second preset position. Among them, the L port is between the K port and the entrance of the rodless chamber, and the M port is between the N port and the entrance of the rod chamber. In some other embodiments of the present invention, the K port is between the L port and the entrance of the rodless chamber, and the N port is between the M port and the entrance of the rod chamber.

Referring to Fig. 3, in the embodiment of the present invention, the first valve group includes a first reversing valve 1, a first hydraulic control check valve 2, a second hydraulic control check valve 3, a third hydraulic control check valve 4 and a balance Valve 5, wherein:

Port A of the first reversing valve 1 communicates with the inlet of the first hydraulic control check valve 2, and port B of the first reversing valve 1 communicates with the rod chamber of the lifting cylinder 6; the first reversing valve 1 is located on the left When the first reversing valve 1 is in the right position, the P port and A port of the first reversing valve 1 are connected, and the T port and B port of the first reversing valve 1 are connected; when the first reversing valve 1 is in the right position, the first reversing valve 1 The P port and B port of the first reversing valve 1 are connected, and the T port and A port of the first reversing valve 1 are connected; the outlet of the first hydraulic control check valve 2 is connected with the rodless chamber of the outrigger cylinder 7, and the first hydraulic control single The hydraulic control port of the directional valve 2 is connected with the B port of the first directional valve 1; the inlet of the second hydraulic control check valve 3 is connected with the K port of the outrigger cylinder 7, and the outlet of the second hydraulic control check valve 3 is connected with the The rod cavity of the lifting cylinder 6 is connected, the hydraulic control port of the second hydraulic control check valve 3 is connected with the M port of the lifting cylinder 6; the inlet of the third hydraulic control check valve 4 is connected with the inlet of the balance valve 5, The outlet of the third hydraulic control check valve 4 communicates with the L port of the outrigger oil cylinder 7, the hydraulic control port of the third hydraulic control check valve 4 communicates with the outlet of the first hydraulic control check valve 2; the outlet of the balance valve 5 It communicates with the N port of the lifting cylinder 6.

In the self-loading garbage truck control system, the rod chamber of the outrigger cylinder 7 has two oil ports: K port and L port. When the outrigger cylinder 7 is fully extended to the end position, the piston of the outrigger cylinder 7 will be at Between K port and oil port L and isolate the two oil ports. There are two oil ports in the rodless chamber of the lifting cylinder 6: M port and N port. When the lifting cylinder 6 is fully retracted to the end position, the piston of the lifting cylinder 6 will be between the oil port M and the oil port N. space and isolate the two oil ports.

Self-loading and unloading garbage truck control system, when the garbage is dumping, the DT1 of the first reversing valve 1 is energized, and the first reversing valve 1 is switched to the left working position. At this time, the rod chamber of the outrigger cylinder 7 is controlled by the second hydraulic control The one-way valve 3, the rod cavity of the lifting cylinder 6, and the first reversing valve 1 are connected to the oil tank, and the rodless cavity of the outrigger cylinder 7 passes through the first hydraulic control one-way valve 2, the first reversing valve 1, and the first reversing valve 1. Two reversing valves 10 are communicated with the pressure oil source, and the outrigger cylinder 7 stretches out under the promotion of the pressure oil to start supporting work. When the outrigger cylinder 7 stretches out to the end position, the piston of the outrigger cylinder 7 is between the K port and the L port and cuts off the two oil ports. The pressure oil in the rodless cavity is in an open state, and the pressure oil in the rodless cavity of the outrigger cylinder 5 connected with the pressure oil source enters the lift cylinder 6 through the third hydraulic control check valve 4 and the balance valve 5. Rodless chamber and promote lifting cylinder 6 to start garbage bin lifting and carry out garbage dumping operation. After the garbage dumping operation is completed, the outrigger cylinder 7 and the lifting cylinder 6 are fully extended. When the garbage dumping operation is completed and the reset operation is completed, DT2 of the first reversing valve 1 is energized, and the first reversing valve 1 is switched to the right working position. At this time, the hydraulic control port of the first hydraulic control check valve 2 communicates with the pressure oil source through the first reversing valve 1, the first hydraulic control check valve 2 is in an open state, and the rod cavity of the lifting cylinder 6 passes through the first reversing valve 1. The first reversing valve 1 and the second reversing valve 10 communicate with the pressure oil source, and the rodless cavity of the lifting cylinder 6 passes through the balance valve 5, the third hydraulic control check valve 4, the L port of the outrigger cylinder 7, the first The hydraulic control check valve 2 and the first reversing valve 1 are connected with the fuel tank, the lifting cylinder 6 starts to retract and reset under the push of the pressure oil, and the balance valve 5 gives the lifting cylinder 6 Provide a certain amount of back pressure to balance the weight of the trash can to ensure the stability of the falling process of the trash can. When the lifting cylinder 6 is retracted to the end position, the piston of the lifting cylinder 6 is between the M port and the N port and the two oil ports are cut off, and the pressure oil enters the liquid of the second hydraulic control check valve 3 through the M port. The control port opens the second hydraulic control check valve 3. At this time, the hydraulic control port of the third hydraulic control check valve 4 is connected with the oil tank, and the third hydraulic control check valve 4 is in a closed state. The pressure oil enters the rod cavity of the outrigger cylinder 7 through the second hydraulic control check valve 3 and the K port, and the outrigger cylinder 7 begins to retract and reset under the pressure oil.

The above-mentioned first reversing valve 1 is an electromagnetic valve, so the position switching of the first reversing valve 1 can be controlled by the controller, and automatic control can be realized.

Referring to Fig. 4 in conjunction with Fig. 2, the self-loading and unloading garbage truck control system of the embodiment of the present invention also includes a feeding cylinder 8 and a second valve group, the piston rod of the feeding cylinder 8 is connected to the feeding mechanism to drive the feeding mechanism to perform loading. Material mode; the second valve group communicates with the feeding cylinder 8 or the lifting cylinder 6 through the pipeline; the second valve group cooperates to make the rodless chamber of the feeding cylinder 8 and the rodless chamber of the lifting cylinder 6 only one into the hydraulic oil.

In the self-loading and unloading garbage truck control system of the present invention, a plurality of reversing valves operate in cooperation, so that only one of the rodless chamber of the feeding cylinder 8 and the rodless chamber of the lifting cylinder 6 enters hydraulic oil. Therefore, the control system finally realizes that the loading mode and the lifting mode are different at the same time, which avoids the accident caused by the operation error, the lifting of the garbage bin during the loading process, or the loading operation during the lifting of the garbage bin. The phenomenon of safety accidents such as injuries, thereby improving the safety performance of self-loading garbage trucks.

In some embodiments of the present invention, the second valve group includes a second reversing valve 10 and a third reversing valve 11, wherein:

The P port of the second reversing valve 10 communicates with the P port of the relief valve 9 and the outlet of the oil pump 21. The oil pump 21 is driven by a hydraulic motor, and the T port of the second reversing valve 10 communicates with the T port of the relief valve 9 and the oil tank. The A port of the second reversing valve 10 communicates with the P port of the third reversing valve 11, and the B port of the second reversing valve 10 communicates with the P port of the first reversing valve 1; the second reversing valve 10 When it is in the left position, the P port and A port of the second reversing valve 10 are connected, and the T port and B port of the second reversing valve 10 are connected; when the second reversing valve 10 is in the right position, the second reversing valve Port P of the valve 10 is connected to port B, and port T of the second reversing valve 10 is connected to port A.

The T port of the third reversing valve 11 communicates with the T port of the first reversing valve 1, the A port of the third reversing valve 11 communicates with the rod cavity of the feeding cylinder 8, and the B port of the third reversing valve 11 It communicates with the rodless cavity of the feeding cylinder 8; when the third reversing valve 11 is in the left position, the P port and A port of the third reversing valve 11 are connected, and the T port and B port of the third reversing valve 11 are connected. When the third reversing valve 11 is in the right position, the P port and B port of the third reversing valve 11 are connected, and the T port and A port of the third reversing valve 11 are connected.

When in the feeding mode, the second reversing valve 10 is in the left position, and the third reversing valve 11 is in the right position; when the feeding is finished, the third reversing valve 11 is in the left position.

When in the lifting mode, the second reversing valve 10 is in the right position, and the first reversing valve 1 is in the right position; when the lifting is finished, the first reversing valve 1 is in the left position.

The left and right positions of the above-mentioned second reversing valve 10, the left and right positions of the third reversing valve 11, and the left and right positions of the first reversing valve 1 can be controlled by hydraulic oil or by electromagnetic The valve solenoid is controlled. In some embodiments of the present invention, the second reversing valve 10 , the third reversing valve 11 and the first reversing valve 1 are electromagnetic reversing valves.

When the left electromagnet DT3 of the second reversing valve 10 is turned on, the second reversing valve 10 is in the left position, and when the right electromagnet DT4 of the second reversing valve 10 is turned on, the second reversing valve 10 is in the right position; When the left electromagnet DT5 of the third reversing valve 11 is turned on, the third reversing valve 11 is in the left position, and when the right electromagnet DT6 of the third reversing valve 11 is turned on, the third reversing valve 11 is in the right position; When the left electromagnet DT1 of the first reversing valve 1 is turned on, the first reversing valve 1 is in the left position, and when the right electromagnet DT2 of the first reversing valve 1 is turned on, the first reversing valve 1 is in the right position.

For the convenience of control, in some embodiments of the present invention, the above-mentioned control system also includes a controller 7, and the controller 7 is electrically connected with the second reversing valve 10, the third reversing valve 11 and the first reversing valve 1; During the feeding mode, the controller 7 controls the second reversing valve 10 to be in the left position, and the third reversing valve 11 is in the right position; when the feeding is finished, the controller 7 controls the third reversing valve 11 to be in the left position; In the lifting mode, the controller 7 controls the second reversing valve 10 to be in the right position, and the first reversing valve 1 is in the right position; when the lifting is finished, the controller 7 controls the first reversing valve 1 to be in the left position.

The above-mentioned controller 7 is the controller of the self-loading and unloading garbage truck itself, and it can also be an additional controller. The valve 1 is electrically connected to control the operating states of the second reversing valve 10 , the third reversing valve 11 and the first reversing valve 1 .

When in the feeding mode, the left electromagnet DT3 of the second reversing valve 10 and the right electromagnet DT6 of the third reversing valve 11 are energized, the second reversing valve 10 switches to the left working position, and the third reversing valve The valve 11 switches to the right working position, and the pressure oil enters the rodless cavity of the feeding cylinder 8 to push the feeding cylinder 8 to start the feeding mode. The reversing valve 11 is switched to the left working position, and the pressure oil enters the rod chamber of the feeding cylinder 8 to push the feeding cylinder 8 to shrink back to its original position. At this time, the P port of the first reversing valve 1 communicates with the oil tank through the second reversing valve 10, and the pressure oil cannot enter the lifting cylinder 6, and the lifting cylinder 6 cannot carry out the box lifting mode, which realizes the loading mode in the feeding mode. Disable automatic control of box lift mode.

When in the box lifting mode, the right electromagnet DT4 of the second reversing valve 10 and the right electromagnet DT2 of the first reversing valve 1 are energized, the second reversing valve 10 is switched to the right working position, and the first reversing valve Valve 1 is switched to the right working position, and the pressure oil enters the rodless chamber of the lifting cylinder 6 to push the lifting cylinder 6 to start the box lifting mode. After the box lifting mode is completed, the left solenoid DT1 of the first reversing valve 1 is activated. Electricity, the first reversing valve 1 is switched to the left working position, and the pressure oil enters the rod chamber of the lifting cylinder 6 to push the lifting cylinder 6 to retract and reset. At this time, the P port of the third reversing valve 11 communicates with the fuel tank through the second reversing valve 10, the pressure oil cannot enter the feeding cylinder 8, and the feeding cylinder 8 cannot perform the feeding mode, which realizes the prohibition of loading in the lifting mode. Automatic control of feed mode.

Referring to FIG. 2 , referring to FIG. 5 , the self-loading and unloading garbage truck control system in some embodiments of the present invention also includes a slide cylinder 12, a feeding cylinder 8 and a third valve group, wherein the piston rod of the slide cylinder 12 is connected to the scraper The mechanism 02 is connected to drive the scraper mechanism 02 to perform the compression operation; the piston rod of the feeding cylinder 8 is connected to the feeding mechanism 01, and drives the feeding mechanism 01 to perform the feeding operation; the third valve group is connected to the slide cylinder 12 through the pipeline. Or the feeding cylinder 8 is connected, and when the oil pressure in the rodless chamber of the slide cylinder 12 reaches a threshold value, the oil pressure in the rodless chamber of the feeding cylinder 8 is greater than or equal to the oil pressure in the rod chamber of the feeding cylinder 8.

When the oil pressure in the rodless cavity of the slide plate oil cylinder 12 of the self-loading and unloading garbage truck control system of the present invention reaches a threshold value, it shows that the garbage bin loading capacity of the automatic loading and unloading garbage truck reaches the limit. At this time, the rodless cavity of the feeding oil cylinder 8 The oil pressure is greater than or equal to the oil pressure in the rod cavity of the feeding cylinder 8, that is to say, the feeding cylinder 8 cannot continue to drive the feeding mechanism to perform the feeding operation. Therefore, when the garbage bin is fully loaded, the feeding oil cylinder 8 stops the feeding operation, which avoids the phenomenon that human error continues the feeding operation after the garbage bin is fully loaded, resulting in leakage of garbage and causing secondary pollution.

In the self-loading garbage truck control system of the present invention, the third valve group includes a fourth reversing valve 13, a fifth reversing valve 14, a sixth reversing valve 15, a seventh reversing valve 16 and an eighth reversing valve 17 .

The A port of the third reversing valve 11 communicates with the oil inlet of the fourth reversing valve 13 and the oil inlet of the fifth reversing valve 14 respectively, and the B port of the third reversing valve 11 communicates with the sixth reversing valve respectively. The oil inlet of 15 communicates with the rodless chamber of the feeding cylinder 8; when the third reversing valve 11 is in the left position, the P port of the third reversing valve 11 is connected with the A port of the third reversing valve 11, and the third reversing valve 11 is connected to the A port of the third reversing valve 11. The T port of the three reversing valve 11 is connected with the B port of the third reversing valve 11; when the third reversing valve 11 is in the right position, the P port of the third reversing valve 11 and the B The port is connected, and the T port of the third reversing valve 11 is connected with the A port of the third reversing valve 11.

The oil outlet of the fourth reversing valve 13 communicates with the rod chamber of the slide cylinder 12; The oil port is cut off; when the fourth reversing valve 13 is in the right position, the oil inlet of the fourth reversing valve 13 and the oil outlet of the fourth reversing valve 13 are connected.

The oil outlet of the fifth reversing valve 14 is communicated with the oil inlet of the seventh reversing valve 16, and the oil inlet of the fifth reversing valve 14 and the oil outlet of the fifth reversing valve 14 are cut off; When the valve 14 is in the right position, the oil inlet port of the fifth reversing valve 14 is connected with the oil outlet port of the fifth reversing valve 14 .

The oil outlet of the seventh reversing valve 16 communicates with the rodless cavity of the slide cylinder 12; The oil port is cut off; when the seventh reversing valve 16 is in the right position, the oil inlet of the seventh reversing valve 16 is connected with the oil outlet of the seventh reversing valve 16 .

The oil outlet of the sixth reversing valve 15 and the oil inlet of the seventh reversing valve 16 communicate with the oil inlet of the eighth reversing valve 17; when the sixth reversing valve 15 was in the left position, the sixth reversing valve The oil inlet of 15 and the oil outlet of the sixth reversing valve 15 are cut off; when the sixth reversing valve 15 is in the right position, the oil inlet of the sixth reversing valve 15 and the oil outlet of the sixth reversing valve 15 conduction.

The oil outlet of the eighth reversing valve 17 communicates with the rod cavity of the feeding oil cylinder 8; when the eighth reversing valve 17 is in the left position, the oil inlet of the eighth reversing valve 17 and the The oil outlet is cut off; when the eighth reversing valve 17 is in the right position, the oil inlet of the eighth reversing valve 17 and the oil outlet of the eighth reversing valve 17 are conducted.

The third reversing valve 11, the fourth reversing valve 13, the fifth reversing valve 14, the sixth reversing valve 15, the seventh reversing valve 16 and the eighth reversing valve 17 can be hydraulic control reversing valves, and also It can be an electromagnetic reversing valve. In some embodiments of the present invention, the third reversing valve 11, the fourth reversing valve 13, the fifth reversing valve 14, the sixth reversing valve 15, the seventh reversing valve 16 and the eighth reversing valve 17 are solenoid valve. By setting it as a solenoid valve, it is easy to control.

In the present invention, the above-mentioned structure has at least one working mode. For example, when in the feeding mode, the third reversing valve 11 is in the right position, and the fourth reversing valve 13, the seventh reversing valve 16 and the eighth reversing valve 17 All are located in the right position, and the fifth reversing valve 14 and the sixth reversing valve 15 are all located in the left position.

The hydraulic oil enters the rodless chamber of the feeding cylinder 8 through the third reversing valve 11 to push the feeding cylinder 8 out to carry out the feeding operation, and the hydraulic oil in the rod chamber of the feeding cylinder 8 passes through the eighth reversing valve 17 and the The seven-way reversing valve 16 enters the rodless chamber of the slide cylinder 12 and pushes the slide cylinder 12 out to compress and push the garbage in the garbage bin to the inside of the garbage box to reserve a loading space for the garbage being loaded. When the garbage bin is not fully loaded, the reverse thrust F of the garbage in the garbage bin on the slide cylinder 12 is less than the set working pressure of the system. Compress and push to the inside of the garbage bin to reserve a loading space for the garbage being loaded. When the garbage bin is fully loaded, the reverse thrust F of the garbage in the garbage bin on the slide cylinder 12 is greater than or equal to the set working pressure of the system, and the hydraulic oil is not enough to continue to push the feeding operation of the feeding cylinder 8, the feeding operation stops, and the garbage bin When it is fully loaded, the feeding operation is stopped to realize automatic control.

When in the upward maintenance mode of the feeding mechanism, the third reversing valve 11 is in the right position, the fifth reversing valve 14 and the eighth reversing valve 17 are both in the right position, the fifth reversing valve 14, the sixth reversing valve Both valve 15 and the seventh reversing valve 16 are in the left position. Hydraulic oil enters the rodless chamber of the feeding cylinder 8 through the third reversing valve 11 to push the feeding cylinder 8 to stretch out, so that the feeding mechanism can be maintained.

When in the downward maintenance mode of the feeding mechanism, the third reversing valve 11 is in the left position, the fifth reversing valve 14 and the eighth reversing valve 17 are in the right position, the fifth reversing valve 14, the sixth reversing valve Both valve 15 and the seventh reversing valve 16 are in the left position. The hydraulic oil enters the rod cavity of the feeding cylinder 8 through the third reversing valve 11, the sixth reversing valve 15 and the seventh reversing valve 16 to push the feeding cylinder 8 to retract, so that the feeding mechanism can be maintained .

When in the upward maintenance mode of the scraper mechanism, the third reversing valve 11 is in the right position, the fourth reversing valve 13, the sixth reversing valve 15 and the seventh reversing valve 16 are all in the right position, and the fifth reversing valve Valve 14 and the eighth reversing valve 17 are all located in the left position. The hydraulic oil enters the rodless cavity of the slide cylinder 12 through the third reversing valve 11, the sixth reversing valve 15 and the seventh reversing valve 16, and the sliding cylinder 12 protrudes under the push of the hydraulic oil to scrape the slide. Agency maintenance.

When in the downward maintenance mode of the scraper mechanism, the third reversing valve 11 is in the left position, the fourth reversing valve 13, the sixth reversing valve 15 and the seventh reversing valve 16 are all in the right position, and the fifth reversing valve Valve 14 and the eighth reversing valve 17 are all located in the left position. Hydraulic oil enters the rod cavity of the slide cylinder 12 through the third reversing valve 11 and the fourth reversing valve 13, and the slide cylinder 12 is retracted under the promotion of the hydraulic oil, so that the scraper mechanism can be maintained.

Referring to Fig. 3, in order to optimize the above technical solution, the self-loading garbage truck control system of the present invention also includes a controller 9, and the controller 9 controls the third reversing valve 11, the fourth reversing valve 13, the fifth reversing valve 14, The sixth reversing valve 15, the seventh reversing valve 16 and the eighth reversing valve 17 are in the feeding mode, the upward maintenance mode of the feeding mechanism, the downward maintenance mode of the feeding mechanism, the upward maintenance mode of the scraper mechanism or the scraping mechanism. The sliding plate mechanism runs in maintenance mode in the downward direction. It should be noted that the above-mentioned controller 9 may be the controller 9 in the original self-loading garbage truck control system of the self-loading garbage truck, or may be an additional controller 9 . As long as the control of the above-mentioned reversing valve can be realized.

When in the feeding mode, the controller 9 controls the electromagnet DT2 of the third reversing valve 11 to be energized and the fourth reversing valve 13 of the B reversing valve, the seventh reversing valve 16 of the E reversing valve, and the eighth reversing valve The directional valve 17 is energized at the same time, the third directional valve 11 is switched to the right position, the B directional valve, the fourth directional valve 13, the E directional valve, the seventh directional valve 16 and the eighth directional valve 17 are all switched. To the right position, now the rod chamber of the feeding oil cylinder 8 communicates with the rodless chamber of the slide cylinder 12 through the E reversing valve, the seventh reversing valve 16 and the eighth reversing valve 17, and the rod chamber of the slide cylinder 12 The fourth reversing valve 13 and the third reversing valve 11 communicate with the oil tank through the B reversing valve, and the hydraulic oil enters the rodless chamber of the feeding cylinder 8 through the third reversing valve 11 to push the feeding cylinder 8 out to carry out the feeding process. Material operation, the hydraulic oil in the rod cavity of the feeding cylinder 8 enters the rodless cavity of the slide cylinder 12 through the eighth reversing valve 17 and the seventh reversing valve 16 of the E reversing valve, and pushes the slide cylinder 12 to stretch out the garbage The garbage in the box is compressed and pushed to the inside of the garbage box to reserve a loading space for the garbage being loaded. When the garbage bin is not fully loaded, the reverse thrust F of the garbage in the garbage bin on the slide cylinder 12 is less than the set working pressure of the system. Compress and push to the inside of the garbage bin to reserve a loading space for the garbage being loaded. When the garbage bin is fully loaded, the reverse thrust F of the garbage in the garbage bin on the slide cylinder 12 is greater than or equal to the set working pressure of the system, and the hydraulic oil is not enough to continue to push the feeding operation of the feeding cylinder 8, the feeding operation stops, and the garbage bin When it is fully loaded, the feeding operation is stopped to realize automatic control.

In the upward maintenance mode of the feeding mechanism, when the feeding cylinder 8 needs to act alone: the controller 9 controls the electromagnet DT2 of the third reversing valve 11, the eighth reversing valve 17, and the fifth reversing valve 14 are energized, At this time, the rod cavity of the feeding cylinder 8 is communicated with the oil tank through the eighth reversing valve 17, the fifth reversing valve 14 and the third reversing valve 11, and the hydraulic oil enters the feeding cylinder 8 through the third reversing valve 11. The rod cavity promotes the feeding cylinder 8 to stretch out.

When the feeding mechanism is in the downward maintenance mode, the controller 9 controls the electromagnet DT1 of the third reversing valve 11, the fifth reversing valve 14, and the eighth reversing valve 17 to be energized. At this time, the rod of the feeding cylinder 8 The chamber communicates with the hydraulic oil source through the eighth reversing valve 17, the fifth reversing valve 14 and the third reversing valve 11, the rodless chamber of the feeding cylinder 8 communicates with the oil tank through the third reversing valve 11, and the hydraulic oil enters The rod cavity of the feeding cylinder 8 promotes the retraction of the feeding cylinder 8.

When it is in the upward maintenance mode of the scraper mechanism, when the slide cylinder 12 needs to act alone: the controller 9 controls the electromagnet DT2 of the third reversing valve 11, the fourth reversing valve 13, the seventh reversing valve 16, and the sixth reversing valve. When the directional valve 15 is energized, the rod chamber of the skateboard cylinder 12 is connected with the oil tank through the fourth directional valve 13 and the third directional valve 11, and the rodless chamber of the skateboard cylinder 12 is connected with the oil tank through the seventh directional valve 16 and the sixth directional valve. The valve 15 and the third reversing valve 11 are in communication with the hydraulic oil source, and the plate oil cylinder 12 stretches out under the push of the hydraulic oil.

When the scraper mechanism is in the downward maintenance mode, the controller 9 controls the electromagnet DT1 of the third reversing valve 11, the fourth reversing valve 13, the seventh reversing valve 16, and the sixth reversing valve 15 to be energized. The rod chamber of 12 communicates with the hydraulic oil source through the fourth reversing valve 13 and the third reversing valve 11, and the rodless chamber of the slide cylinder 12 passes through the seventh reversing valve 16, the sixth reversing valve 15 and the third reversing valve. The valve 11 is communicated with the oil tank, and the plate oil cylinder 12 is retracted under the promotion of the hydraulic oil.

Referring to Fig. 2, referring to Fig. 6, the self-loading garbage truck control system in some embodiments of the present invention also includes a scraper cylinder and a fourth valve group, wherein the piston rod of the scraper cylinder is connected with the scraper mechanism, and drives the scraper The sliding plate mechanism executes the scraper operation; the fourth valve group communicates with the scraper oil cylinder through the pipeline.

In some embodiments of the present invention, the fourth valve group includes a ninth reversing valve 19 and a converging valve 20, wherein: port A of the ninth reversing valve 19 communicates with the first inlet of the converging valve 20, and the ninth reversing valve The B port of the valve 19 is connected with the second inlet of the collecting valve 20, the P port of the ninth reversing valve 19 is connected with the A port of the second reversing valve 10, and the T port of the ninth reversing valve 19 is connected with the second reversing valve. The B port of the ninth reversing valve 10 is connected; when the ninth reversing valve 19 is in the left position, the P port of the ninth reversing valve 19 is connected with the A port of the ninth reversing valve 19, and the T port of the ninth reversing valve 19 It is connected with port B of the ninth reversing valve 19; when the ninth reversing valve 19 is in the right position, port P of the ninth reversing valve 19 is connected with port B of the ninth reversing valve 19, The T port of the valve 19 is connected with the A port of the ninth reversing valve 19; the first outlet of the collecting valve 20 is connected with the rod chamber of the scraper cylinder, and the second outlet of the collecting valve 20 is connected with the The rod cavity is connected.

When the scraper cylinder is in the scraper mode, the second reversing valve 10 is in the left position, the ninth reversing valve 19 is in the left position, and after the scraping ends, the ninth reversing valve 19 is in the right position.

In some embodiments of the present invention, a controller is also included, and the controller controls each valve group to open or close. The above-mentioned controller can be additionally provided with a controller, or the functions of the self-loading garbage truck's own controller can be expanded.

The embodiment of the present invention also discloses a self-loading and unloading garbage truck, which includes a garbage bin, a scraper mechanism, a feeding mechanism and an outrigger mechanism. The self-loading and unloading garbage truck uses the control system of any one of the above self-loading and unloading garbage trucks. Since the above self-loading garbage truck control system has the above beneficial effects, the self-loading garbage truck using the self-loading garbage truck control system also has corresponding effects, which will not be repeated here.

It should be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings. In the case of no conflict, the embodiments and the features in the embodiments of the present invention can be combined with each other.

It should be understood that "system", "device", "unit" and/or "module" used in the present invention is a method for distinguishing different components, elements, parts, parts or assemblies of different levels. However, such words may be replaced by other expressions if they serve the same purpose.

As indicated herein and in the claims, the words "a", "an", "an" and/or "the" are not specific to the singular and may include the plural unless the context clearly suggests an exception. Generally speaking, the terms "comprising" and "comprising" only suggest the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also contain other steps or elements. An element qualified by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or device that includes the element.

Among them, in the description of the embodiments of the present invention, unless otherwise specified, "/" means or means, for example, A/B can mean A or B; "and/or" in this article is only a description of associated objects The association relationship of indicates that there may be three kinds of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently. In addition, in the description of the embodiments of the present invention, "plurality" refers to two or more than two.

Hereinafter, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features.

The flow chart is used in the present invention to illustrate the operations performed by the system according to the embodiment of the present invention. It should be understood that the preceding or following operations are not necessarily performed in the exact order. Instead, various steps may be processed in reverse order or simultaneously. At the same time, other operations can be added to these procedures, or a certain step or steps can be removed from these procedures.

The above description is only a preferred embodiment of the present invention and an illustration of the applied technical principles, and is not intended to limit the present invention. Various modifications and variations of the present invention will occur to those skilled in the art. The scope of the invention involved in the present invention is not limited to the technical solution formed by the specific combination of the above technical features, but also covers any combination of the above technical features or their equivalent features without departing from the above inventive concept. Other technical solutions formed. For example, a technical solution formed by replacing the above-mentioned features with technical features disclosed in the present invention (but not limited to) having similar functions.

Claims (14)

1. The self-loading and unloading garbage truck control system is characterized by comprising a lifting oil cylinder, a supporting leg oil cylinder and a first valve group, wherein a piston rod of the lifting oil cylinder is connected with a lifting mechanism to drive the lifting mechanism to perform lifting operation, the supporting leg oil cylinder is used for driving a supporting leg to perform supporting operation, the first valve group is communicated with the lifting oil cylinder or the supporting leg oil cylinder through a pipeline, when the piston rod of the supporting leg oil cylinder moves to a first preset position, the supporting leg is supported in place, and a rodless cavity of the lifting oil cylinder starts to feed hydraulic oil; when a piston rod of the lifting oil cylinder moves to a second preset position, the lifting mechanism resets in place, and a rod cavity of the supporting leg oil cylinder starts to feed hydraulic oil.

2. The self-loading refuse cart control system according to claim 1,

the supporting leg oil cylinder is provided with a K port and an L port, and a first preset position is arranged between the K port and the L port;

the lifting oil cylinder is provided with an M port and an N port, and a second preset position is arranged between the M port and the N port.

3. The self-loading refuse cart control system according to claim 1,

first valves include first switching-over valve, first pilot operated check valve, second pilot operated check valve, third pilot operated check valve and balanced valve, wherein:

the port A of the first reversing valve is communicated with the inlet of the first hydraulic control one-way valve, and the port B of the first reversing valve is communicated with the rod cavity of the lifting oil cylinder; when the first reversing valve is positioned at a left position, a port P and a port A of the first reversing valve are communicated, and a port T and a port B of the first reversing valve are communicated; when the first reversing valve is positioned at the right position, the port P and the port B of the first reversing valve are communicated, and the port T and the port A of the first reversing valve are communicated;

the outlet of the first hydraulic control one-way valve is communicated with the rodless cavity of the supporting leg oil cylinder, and the hydraulic control port of the first hydraulic control one-way valve is communicated with the port B of the first reversing valve;

an inlet of the second hydraulic control one-way valve is communicated with a K port of the supporting leg oil cylinder, an outlet of the second hydraulic control one-way valve is communicated with a rod cavity of the lifting oil cylinder, and a hydraulic control port of the second hydraulic control one-way valve is communicated with an M port of the lifting oil cylinder;

an inlet of the third hydraulic control one-way valve is communicated with an inlet of the balance valve, an outlet of the third hydraulic control one-way valve is communicated with an L port of the supporting leg oil cylinder, and a hydraulic control port of the third hydraulic control one-way valve is communicated with an outlet of the first hydraulic control one-way valve;

and an outlet of the balance valve is communicated with the N port of the lifting oil cylinder.

4. The self-loading and unloading garbage truck control system according to claim 3, further comprising a loading cylinder and a second valve group, wherein a piston rod of the loading cylinder is connected with the loading mechanism to drive the loading mechanism to execute a loading mode; the second valve group is communicated with the feeding oil cylinder or the lifting oil cylinder through a pipeline; and the second valve group operates in a matched mode, so that only one hydraulic oil is fed into the rodless cavity of the feeding oil cylinder and the rodless cavity of the lifting oil cylinder.

5. The self-loading refuse cart control system of claim 4, wherein the second valve bank comprises a second diverter valve, a third diverter valve, and an overflow valve, wherein:

the port A of the second reversing valve is communicated with the port P of the third reversing valve, the port B of the second reversing valve is communicated with the port P of the first reversing valve, the port P of the second reversing valve is communicated with the oil pump, and the port T of the second reversing valve is communicated with the oil tank; when the second reversing valve is positioned at the left position, a port P and a port A of the second reversing valve are communicated, and a port T and a port B of the second reversing valve are communicated; when the second reversing valve is positioned at the right position, the port P and the port B of the second reversing valve are communicated, and the port T and the port A of the second reversing valve are communicated;

a T port of the third reversing valve is communicated with a T port of the first reversing valve, a port A of the third reversing valve is communicated with a rod cavity of the feeding oil cylinder through a pipeline, and a port B of the third reversing valve is communicated with a rodless cavity of the feeding oil cylinder; when the third reversing valve is positioned at a left position, a port P and a port A of the third reversing valve are communicated, and a port T and a port B of the third reversing valve are communicated; when the third reversing valve is positioned at the right position, a port P and a port B of the third reversing valve are communicated, and a port T and a port A of the third reversing valve are communicated;

and the P port of the overflow valve is communicated with the P port of the second reversing valve, and the T port of the overflow valve is communicated with the T port of the second reversing valve.

6. The self-loading refuse cart control system of claim 5, wherein when in a loading mode, said second diverter valve is in a left position and said third diverter valve is in a right position; when the feeding is finished, the third reversing valve is in a left position;

when in the lifting mode, the second reversing valve is located at the right position, and the first reversing valve is located at the right position; when the lifting is finished, the first reversing valve is in the left position.

7. The self-loading and unloading garbage truck control system of claim 5, further comprising a sled cylinder and a third valve set, wherein a piston rod of the sled cylinder is connected to the sled mechanism to drive the sled mechanism to perform a compression operation; the third valve group is communicated with the sliding plate oil cylinder or the feeding oil cylinder through a pipeline, and when the oil pressure in a rod-free cavity of the sliding plate oil cylinder reaches a threshold value, the oil pressure in a rod-free cavity of the feeding oil cylinder is greater than or equal to the oil pressure in a rod-containing cavity of the feeding oil cylinder.

8. The self-loading refuse cart control system of claim 7, wherein the third valve bank comprises a fourth diverter valve, a fifth diverter valve, a sixth diverter valve, a seventh diverter valve, and an eighth diverter valve, wherein:

an oil inlet of the fourth reversing valve is communicated with an A port of the third reversing valve, and an oil outlet of the fourth reversing valve is communicated with a rod cavity of the sliding plate oil cylinder; when the fourth reversing valve is positioned at the left position, the oil inlet of the fourth reversing valve and the oil outlet of the fourth reversing valve are cut off; when the fourth reversing valve is positioned at the right position, the oil inlet of the fourth reversing valve is communicated with the oil outlet of the fourth reversing valve;

an oil inlet of the fifth reversing valve is communicated with an A port of the third reversing valve, an oil outlet of the fifth reversing valve is communicated with an oil inlet of the seventh reversing valve, and an oil inlet of the fifth reversing valve is cut off from an oil outlet of the fifth reversing valve; when the fifth reversing valve is located at the right position, the oil inlet of the fifth reversing valve is communicated with the oil outlet of the fifth reversing valve;

an oil inlet of the sixth reversing valve is communicated with a port B of the third reversing valve, and an oil outlet of the sixth reversing valve and an oil inlet of the seventh reversing valve are communicated with an oil inlet of the eighth reversing valve; when the sixth reversing valve is located at the left position, the oil inlet of the sixth reversing valve and the oil outlet of the sixth reversing valve are cut off; when the sixth reversing valve is located at the right position, an oil inlet of the sixth reversing valve is communicated with an oil outlet of the sixth reversing valve;

an oil outlet of the seventh reversing valve is communicated with a rodless cavity of the slide plate oil cylinder; when the seventh reversing valve is positioned at the left position, the oil inlet of the seventh reversing valve and the oil outlet of the seventh reversing valve are cut off; when the seventh reversing valve is positioned at the right position, the oil inlet of the seventh reversing valve is communicated with the oil outlet of the seventh reversing valve;

an oil outlet of the eighth reversing valve is communicated with a rod cavity of the feeding oil cylinder; when the eighth reversing valve is located at the left position, the oil inlet of the eighth reversing valve and the oil outlet of the eighth reversing valve are cut off; and when the eighth reversing valve is positioned at the right position, the oil inlet of the eighth reversing valve is communicated with the oil outlet of the eighth reversing valve.

9. The self-loading and unloading garbage truck control system according to claim 8, wherein when in the loading mode, the second diverter valve is in the left position, the third diverter valve is in the right position, the fourth diverter valve, the seventh diverter valve and the eighth diverter valve are all in the right position, and the fifth diverter valve and the sixth diverter valve are all in the left position;

when the feeding mechanism is in an ascending maintenance mode, the third reversing valve is located at the right position, the fifth reversing valve and the eighth reversing valve are located at the right position, and the fifth reversing valve, the sixth reversing valve and the seventh reversing valve are located at the left position;

when the feeding mechanism is in a descending maintenance mode, the third reversing valve is located at the left position, the fifth reversing valve and the eighth reversing valve are located at the right position, and the fifth reversing valve, the sixth reversing valve and the seventh reversing valve are located at the left position;

when the scraper mechanism is in an upward maintenance mode, the third reversing valve is located at the right position, the fourth reversing valve, the sixth reversing valve and the seventh reversing valve are located at the right position, and the fifth reversing valve and the eighth reversing valve are located at the left position;

when the scraper and slide mechanism is in a downward maintenance mode, the third reversing valve is located at the left position, the fourth reversing valve, the sixth reversing valve and the seventh reversing valve are located at the right position, and the fifth reversing valve and the eighth reversing valve are located at the left position.

10. The self-loading and unloading garbage truck control system of claim 5, further comprising a scraper cylinder and a fourth valve set, wherein a piston rod of the scraper cylinder is connected with the scraper mechanism and drives the scraper mechanism to perform scraper operation; and the fourth valve group is communicated with the scraper oil cylinder through a pipeline.

11. The self-loading refuse cart control system of claim 10, wherein said fourth valve bank comprises a ninth reversing valve and a converging valve, wherein:

the port A of the ninth reversing valve is communicated with the first inlet of the collecting valve, the port B of the ninth reversing valve is communicated with the second inlet of the collecting valve, the port P of the ninth reversing valve is communicated with the port A of the second reversing valve, and the port T of the ninth reversing valve is communicated with the port B of the second reversing valve; when the ninth reversing valve is in the left position, a port P of the ninth reversing valve is communicated with a port A of the ninth reversing valve, and a port T of the ninth reversing valve is communicated with a port B of the ninth reversing valve; when the ninth reversing valve is in the right position, a port P of the ninth reversing valve is communicated with a port B of the ninth reversing valve, and a port T of the ninth reversing valve is communicated with a port A of the ninth reversing valve;

and a first outlet of the collecting valve is communicated with a rod cavity of the scraper oil cylinder, and a second outlet of the collecting valve is communicated with a rodless cavity of the scraper oil cylinder.

12. The self-loading and unloading garbage truck control system of claim 10, wherein the second reversing valve is in the left position, the ninth reversing valve is in the left position, and the ninth reversing valve is in the right position after the scraper is finished when the scraper cylinder is in the scraper mode.

13. The self-loading refuse cart control system of claim 10, further comprising a controller that controls the valve blocks to open or close.

14. A self-loading and unloading garbage truck characterized by applying the self-loading and unloading garbage truck control system as defined in any one of claims 1 to 13.

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