CN112314211A

CN112314211A - Branch crushing vehicle

Info

Publication number: CN112314211A
Application number: CN202011104646.6A
Authority: CN
Inventors: 张作良; 孔国华; 王美成; 石培科
Original assignee: Changsha Zhongneng Equipment Manufacturing Co ltd
Current assignee: Changsha Zhongneng Equipment Manufacturing Co ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2021-02-05

Abstract

The invention provides a branch crushing vehicle, which relates to the technical field of branch crushing equipment, and comprises: a transport vehicle, a branch crusher, a power takeoff and a material storage box; wherein, the transport vehicle is provided with a power source for driving the transport vehicle to run; the branch crusher is arranged on the transport vehicle and is provided with a crushing assembly for crushing materials; the branch rubbing crusher still includes: the hydraulic motor is used for driving the crushing assembly to work, and the hydraulic pump is connected with the hydraulic motor through a pipeline; the input end of the power takeoff is in power connection with a power source; and an output shaft of the power takeoff is in power connection with an input shaft of the hydraulic pump. The branch rubbing crusher can discharge the material after smashing to the storage incasement. The technical scheme of this application provides a transmission scheme between transport vechicle power supply and the branch rubbing crusher to use the chassis power of delivery vehicle to drive branch rubbing crusher's hydraulic system.

Description

Branch crushing vehicle

Technical Field

The application relates to branch crushing apparatus technical field especially relates to a branch crushing car.

Background

The branch crushing machine is arranged on the branch crushing vehicle, the branch crushing machine crushes branches through the cutting roller, and the cutting roller can be driven by a hydraulic system. For example, in the branch chopper disclosed in chinese patent 201911397563.8, a hydraulic system is used to drive the cutting rollers to crush the branch material.

At present, in some branch crushing vehicles, a hydraulic system of a branch crusher comprises a hydraulic pump and a hydraulic motor, wherein the hydraulic pump is driven by power of a vehicle chassis. For example, chinese patent 201420332680.2 discloses a branch pruning integrated working vehicle in which a hydraulic pump of a branch crusher is driven by a power output shaft of the vehicle chassis. Usually the operation of the branch breaker and the running of the vehicle itself are not synchronized, and no specific transmission scheme is involved in this patent document.

Therefore, for the branch crushing vehicle on which the branch crusher is driven by a hydraulic system, it is necessary to provide a perfect transmission scheme to drive the hydraulic system of the branch crusher by using the chassis power of the carrying vehicle.

Disclosure of Invention

The technical problem that this application will be solved lies in, to prior art's the aforesaid not enough, provides a branch crushing car.

This branch crushing cart includes:

a transport vehicle having a power source for driving the vehicle;

a branch shredder disposed on the transport cart, the branch shredder having a shredder assembly for shredding material; the branch rubbing crusher still includes: the hydraulic motor is used for driving the crushing assembly to work, and the hydraulic pump is connected with the hydraulic motor through a pipeline;

the input end of the power takeoff is in power connection with a power source; and an output shaft of the power takeoff is in power connection with an input shaft of the hydraulic pump.

A storage bin disposed on the transport vehicle and having an interior space for containing material; the branch rubbing crusher can discharge the material after smashing to the storage incasement.

Further, the transport vehicle includes: a head and a rear frame; the material storage box is arranged on the rear frame; the branch crusher is arranged on the rear frame and is positioned between the vehicle head and the storage box.

Further, an oil outlet of the hydraulic pump is connected to an oil inlet of the hydraulic motor through a first pipeline; and the oil inlet of the hydraulic pump is connected to the oil outlet of the hydraulic motor through a second pipeline.

Further, a third pipeline is arranged between the first pipeline and the second pipeline; one end of the third pipeline is communicated with the first pipeline, and the other end of the third pipeline is communicated with the second pipeline; a control valve capable of adjusting the on-off of the pipeline is arranged on the third pipeline;

the control valve is linked with the power takeoff, and oil ports on two sides of the control valve are disconnected when the power of the power takeoff is combined; when the power takeoff power is cut off, oil ports on two sides of the control valve are communicated, so that the third pipeline is conducted.

Furthermore, the power takeoff is provided with an operating rod for controlling the on-off of power transmission; the control valve is specifically a stroke valve;

the operating rod is connected with an operating pull wire connecting piece; the operating cord connector includes: a connecting part, a linkage part and an operating part which are connected with the operating rod;

when the first operation is applied to the operation part, the connecting part drives the operating rod of the power takeoff to act so that the input end of the power takeoff is in power connection with the output shaft of the power takeoff, meanwhile, the linkage part acts on the valve core of the stroke valve so that oil ports on two sides of the stroke valve are disconnected, and the third pipeline is not conducted;

when the second operation is applied to the operation part, the connecting part drives the operating rod of the power takeoff to act so as to disconnect the power between the input end of the power takeoff and the output shaft of the power takeoff, meanwhile, the linkage part acts on the valve core of the stroke valve so as to communicate oil ports on two sides of the stroke valve, and the third pipeline is conducted.

Furthermore, the power takeoff is provided with an operating rod for controlling the on-off of power transmission; the control valve is specifically an electric control reversing valve;

the branch crushing vehicle is also provided with a controller and a sensor; the controller is respectively connected with the sensor and the control valve;

the operating rod is connected with an operating pull wire connecting piece; the sensor is used for sensing the action of the operating pull wire connecting piece; when the sensor senses the action of the induction operation stay wire connecting piece, the controller controls the connection or disconnection of oil ports on two sides of the electric control reversing valve.

Further, the linkage between the control valve and the power takeoff is realized through circuit control.

Further, the power takeoff is a pneumatic power takeoff and is provided with an operating cylinder for controlling the power of the power takeoff to be switched on and off and an air path electric control valve for controlling the operating cylinder to act;

the branch crushing vehicle is provided with a controller, and the controller is respectively connected with the air path electric control valve and the control valve so as to control the actions of the air path electric control valve and the control valve.

Furthermore, an access hole for maintaining the cutting roller is formed in the shell of the branch grinder.

Further, the crushing assembly is a cutting roller capable of rotatably crushing branch materials; the branch crusher adjusts the rotating speed of the cutting roller according to the cutting load, so that the rotating speed of the cutting roller is increased along with the increase of the cutting load within a preset range; the cutting roll rotation speed has a rotation speed upper limit value.

The application provides a car is smashed to branch, this car is smashed to branch includes: a transport vehicle, a branch crusher and a power takeoff; the branch crusher adopts a hydraulic driving system. The power takeoff is used for power connection between the transport vehicle and the branch crusher. The power takeoff can adjust the break-make of power transmission between transport vechicle power supply and the branch rubbing crusher. The technical scheme of this application provides a transmission scheme between transport vechicle power supply and the branch rubbing crusher to use the chassis power of delivery vehicle to drive branch rubbing crusher's hydraulic system. In this transmission scheme, the work of branch rubbing crusher and the travel of transport vechicle can realize mutual independence.

Drawings

FIG. 1 is a schematic view of the external structure of a branch crushing vehicle in the embodiment of the application.

FIG. 2a is a schematic diagram of a transmission route of the branch crushing vehicle in the embodiment of the application.

FIG. 2b is another schematic diagram of the transmission path of the branch grinding vehicle in the embodiment of the present application.

FIG. 3 is a schematic structural diagram of a hydraulic system of the branch grinder in the embodiment of the application.

FIG. 4 is another schematic diagram of the hydraulic system of the branch grinder in the embodiment of the present application.

Fig. 5 is a schematic structural diagram of a power takeoff and a control valve in an embodiment of the present application.

Fig. 6 is another schematic diagram of the power take-off and control valve of the embodiment of the present application.

Fig. 7 is a schematic block diagram of electric control hardware of the gas circuit electric control valve and the control valve in the embodiment of the present application.

FIG. 8 is a flow chart of the branch grinder determining the upper limit value of the rotating speed in the embodiment of the application.

Detailed Description

The following are specific embodiments of the present application and are further described with reference to the drawings, but the present application is not limited to these embodiments. In the following description, specific details such as specific configurations and components are provided only to help the embodiments of the present application be fully understood. Accordingly, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

In addition, the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Referring to fig. 1 to 5, an embodiment of the present application provides a branch crushing vehicle, including: the tree branch crusher comprises a carrier vehicle 100, a branch crusher 200, a power takeoff 300 and a material storage box 600; wherein, the transport vechicle 100 is the delivery vehicle, and branch rubbing crusher 200 is used for smashing the branch material, and power takeoff 300 is used for the power between transport vechicle 100 and the branch rubbing crusher 200 to be connected. The transporter 100 can transport the branch shredder 200 to different locations so that the branch shredder 200 can shred material at different locations. In this application embodiment, branch rubbing crusher can be used for smashing plant waste such as branch, rattan, cotton stalk.

Referring to fig. 1, a storage bin 600 is provided on the transporter 100, which has an inner space 601 for containing materials; the branch grinder 200 can discharge the ground material into the storage box 600. The storage box 600 is used for storing the materials crushed by the branch crusher 200, and is convenient to process.

Further, the transporting carriage 100 includes: a headstock 103 and a rear frame 104; the material storage box 600 is arranged on the rear frame 104; the branch grinder 200 is arranged on the rear frame 104 and is positioned between the vehicle head 103 and the storage box 600. Storage case 600 sets up in the one end that is close to the rear of a vehicle, can realize overturning backward and unload. When the storage case 600 overturns backward and unloads, the whole car stability is better, and difficult emergence is heeled, and can assist through walking around and unload, unload more thoroughly.

The transport vehicle 100 is provided with a power source 101 for driving the vehicle to travel. The power source 101 may be an electric motor, an internal combustion engine, or other power source suitable for a transportation vehicle. In some embodiments, the transporter includes multiple power sources, such as a hybrid vehicle having an electric motor and an internal combustion engine, multiple electric motor driven transporters. In the technical solution of the transportation vehicle with multiple power sources, one of the power sources may be used to drive the branch grinder 200, or multiple power sources may be used to drive the branch grinder 200 together.

A branch shredder 200 is disposed on the transporter 100, the branch shredder 200 having a shredder assembly for shredding material; the branch grinder 200 further includes: a hydraulic motor 201 for driving the crushing assembly to work, and a hydraulic pump 202 connected with the hydraulic motor 201 in a pipeline way. Here, the branch shredder 200 employs a hydraulic drive system. Further, the pulverizing assembly is embodied as a cutting roll.

Power takeoff 300 is used to draw power from power source 101 on the chassis of transporter 100 to drive hydraulic pump 202. Specifically, the input end of the power takeoff 300 is in power connection with the power source 101; the output shaft of the power take-off 300 is in power connection with the input shaft of the hydraulic pump 202. In some embodiments, the power take-off 300 can be adjusted to power on or power off. When the power take-off 300 is adjusted to power-off, the input shaft of the hydraulic pump 202 loses drive, thereby deactivating the branch mill 200. When the power takeoff 300 is adjusted to power combination, the power source 101 on the chassis of the transporter 100 outputs power to the hydraulic pump 202, so that the branch grinder 200 can work normally. When the branch grinding vehicle is running, the power takeoff 300 can be adjusted to be powered off to stop the branch grinder 200. When the branch grinding vehicle stops at a location ready to grind material, the power takeoff 300 is adjusted to a power combination that allows the branch grinder 200 to operate normally. Therefore, the power takeoff 300 can adjust the power transmission between the power source 101 and the branch grinder 200 to make the branch grinder 200 work independently of the running of the transportation vehicle 100.

In some embodiments, the power take-off 300 remains powered all the time, and the input shaft of the hydraulic pump 202 remains powered connected to the power source 101. When the branch grinder 200 needs to be stopped, the displacement of the hydraulic pump 202 is adjusted to zero, and the hydraulic motor 201 does not work. When the branch grinder 200 is required to work, the hydraulic pump 202 is adjusted to drive the hydraulic motor 201 to rotate. Also, the operation of the branch shredder 200 and the travel of the transporter 100 are independent of each other.

It should be understood that the power connection referred to in the embodiments of the present application merely refers to a power transmission relationship, and does not limit the two parties of the power connection to have a direct physical contact connection. Referring to fig. 2b, some other transmission mechanism or transmission component may be provided between the two components of the power connection to achieve power transmission, e.g., a reducer, a transmission shaft. Specifically, there is also a gearbox 102 between the power take-off 300 and the power source 101, and the input of the power take-off 300 is connected to the gearbox 102 to obtain power. A transmission member 500 is disposed between the power take-off 300 and the hydraulic pump 202, and in some embodiments, the transmission member 500 is a transmission shaft, a chain, a steel belt, or a belt.

Further, an oil outlet of the hydraulic pump 202 is connected to an oil inlet of the hydraulic motor 201 through a first pipeline; an oil inlet of the hydraulic pump 202 is connected to an oil outlet of the hydraulic motor 201 through a second pipeline. The hydraulic pump 202 forms a closed hydraulic system with the hydraulic motor 201, and the first and second lines. The hydraulic oil flows from the oil outlet of the hydraulic pump 202 through the first pipeline to the oil inlet of the hydraulic motor 201, and then flows from the oil outlet of the hydraulic motor 201 back to the oil inlet of the hydraulic pump 202 through the second pipeline. The closed loop is continuously supplied with oil by a hydraulic pump and a hydraulic motor in an end-to-end connection mode, and a hydraulic medium does not pass through an oil tank. The closed loop is characterized in that only a small amount of oil is sucked from the oil tank. The closed hydraulic system occupies less space, and the required oil tank is smaller, so that the closed hydraulic system is suitable for being applied to a branch crushing vehicle. Further, the hydraulic pump 202 is an electric proportional closed plunger pump; the hydraulic motor 201 is a closed motor.

It should be noted that, for the branch crushing vehicle, the closed hydraulic system is adopted to drive the cutting roller of the branch crusher, and the following problems exist: firstly, when the cutting roller blade is maintained, equipment needs to be shut down, the position of the cutting roller blade in the circumferential direction is uncertain, and the cutting roller needs to be rotated by external force easily during maintenance, so that the movable blade on the cutting roller is positioned at an access hole. When the equipment is stopped, the inlet and the outlet of the hydraulic motor are in a blocked state, the output shaft cannot rotate by external force, and the maintenance is inconvenient. Second, when the power take-off is first disconnected and the pump displacement is then controlled to zero, pump overspeed damage may occur. In particular, in order to disconnect the power output of the cutting roller of the branch grinder, the power takeoff needs to be operated to disconnect the power connection. When the power takeoff is disconnected, the hydraulic pump does not have power input, because the inertia of the cutting roller is large, the rotating speed is high, the output shaft of the hydraulic motor rotates under the action of the inertia of the cutting roller, the hydraulic motor is equivalent to a pump, the hydraulic pump is equivalent to a motor, the rotating load of the hydraulic pump is small, and the rotating speed of the cutting roller is reduced slowly. Because the discharge capacity of the hydraulic motor is fixed and unchanged, the discharge capacity of the adjusting hydraulic pump is reduced, the rotating speed of the hydraulic pump can be gradually accelerated and even overspeed is caused, and the hydraulic pump is easily damaged.

With further reference to fig. 3 and 4, a third pipeline is disposed between the first and second pipelines; one end of the third pipeline is communicated with the first pipeline, and the other end of the third pipeline is communicated with the second pipeline; a control valve 203 capable of adjusting the on-off of the pipeline is arranged on the third pipeline; the control valve 203 is linked with the power takeoff 300, and when the power of the power takeoff 300 is combined, oil ports on two sides of the control valve 203 are disconnected; when the power of the power takeoff 300 is cut off, the oil ports on the two sides of the control valve 203 are communicated, so that the third pipeline is communicated. Specifically, the oil ports on both sides of the control valve 203 are specifically: a first port connected to the first line and a second port connected to the second line. When the first oil port is communicated with the second oil port, the third pipeline is conducted; and when the first oil port and the second oil port are disconnected, the oil circuit of the third pipeline is disconnected. The above problems with closed hydraulic systems are solved by the linkage between the control valve 203 and the power take-off 300. The following is a detailed description.

When the branch grinder 200 works normally, the input end of the power takeoff 300 and the output shaft are adjusted to be power combination, the power of the power source 101 can be smoothly transmitted to the input shaft of the hydraulic pump 202, the oil ports on the two sides of the control valve 203 are disconnected, the third pipeline is disconnected, and the hydraulic pump 202 drives the hydraulic motor 201 to work normally.

Furthermore, an access hole for maintaining the cutting roller is arranged on the shell of the branch grinder. When the branch grinder 200 stops to maintain the cutting roller, the power takeoff 300 is in a disconnected state, oil ports on two sides of the control valve 203 are communicated, the hydraulic motor 201 inlet and outlet are communicated through a third pipeline, the output shaft of the hydraulic motor 201 can rotate under the action of external force at the moment, and a cutting roller blade needing to be maintained is convenient to rotate to the position of the access hole so as to be maintained.

While the transporter 100 is in motion, the power source 101 provides power for the motion of the transporter 100. At this point, the branch shredder 200 thereon is normally not operating, requiring the power take off 300 to be disconnected to disconnect the power connection between the power source 101 and the hydraulic pump 202 of the branch shredder 200.

When the power takeoff 300 is disconnected, the power between the power source 101 and the hydraulic pump 202 of the branch grinder 200 is disconnected, and the oil ports on the two sides of the control valve 203 are communicated, so that the third pipeline is communicated. The power takeoff 300 is disconnected, the oil inlet and the oil outlet of the hydraulic motor 201 are communicated through a third pipeline, most of oil at the oil outlet of the hydraulic motor 201 flows into the oil inlet of the hydraulic motor 201 through the control valve 203, at the moment, the displacement of the hydraulic pump 202 is controlled to be reduced to zero, and most of the flow flowing into the hydraulic pump 202 is divided by the control valve 203, so that the condition that the hydraulic pump 202 is overspeed cannot occur, and the overspeed damage of the hydraulic pump 202 under the condition is avoided.

In some embodiments, the power take-off 300 may be manually operated. Referring specifically to fig. 5, the power takeoff 300 has an operating lever 301 for controlling the on/off of power transmission; the control valve 203 is specifically a stroke valve; the operating rod 301 is connected with an operating pull wire connecting piece 400; the operation wire connection member 400 includes: a connecting portion 401, an interlocking portion 402, and an operating portion 403 connected to the operating lever 301; when a first operation is applied to the operation part 403, the connection part 401 drives the operation rod 301 of the power takeoff 300 to act so as to enable the power takeoff input end to be in power connection with the power takeoff output shaft, meanwhile, the linkage part 402 acts on the valve core of the stroke valve 203, so that oil ports on two sides of the stroke valve 203 are disconnected, and a third pipeline is not conducted; when the second operation is applied to the operation portion 403, the connection portion 401 drives the operation rod 301 of the power takeoff 300 to operate, so that the power between the input end of the power takeoff and the output shaft of the power takeoff is cut off, and simultaneously, the linkage portion 402 acts on the valve core of the stroke valve 203, so that the oil ports on the two sides of the stroke valve 203 are communicated, and the third pipeline is communicated.

Referring to fig. 5, when the power takeoff 300 is engaged, the operating lever 301 is driven to operate by operating the pull-wire connector 400, so that the power takeoff 300 is engaged. At this time, the spool of the stroke valve is pressed back by the stroke valve linkage part 402, the oil ports on both sides of the stroke valve 203 are disconnected, and the oil inlet and outlet ports of the hydraulic motor 201 and the hydraulic pump 202 are disconnected, so that the normal cutting work is not influenced. When the power takeoff 300 needs to be disconnected, the operating rod 301 is driven to act by operating the pull wire connecting piece 400, so that the power takeoff 300 is disconnected in power. At this time, the linkage portion 402 is away from the stroke valve 203, the spool of the stroke valve 203 is popped up by the internal spring, and the oil ports on both sides of the stroke valve 203 are combined, so that the oil inlet and outlet ports of the hydraulic motor 201 and the hydraulic pump 202 are communicated. Referring to fig. 5, in some embodiments, the first operation is to adjust the wire connection 400 downward and the second operation is to adjust the wire connection 400 upward.

In some embodiments, referring to fig. 6, the power takeoff 300 has an operating lever 301 for controlling the power transmission; the control valve 203 is specifically an electric control reversing valve; the branch crushing vehicle is also provided with a controller and a sensor 700; the controller is respectively connected with the sensor 700 and the control valve 203; the operating rod 301 is connected with an operating pull wire connecting piece 400; the sensor 700 is used for sensing the action of operating the wire connecting member 400; when the sensor 700 senses the action of the induction operation pull wire connecting piece 400, the controller controls the oil ports on the two sides of the electric control reversing valve 203 to be connected or disconnected.

Specifically, when an operation is manually applied to the operation wire connecting piece 400 to drive the operating rod 301 to combine the power of the power takeoff 300, the controller controls the electrically controlled directional valve 203 to operate to disconnect the oil ports on the two sides, and the hydraulic pump 202 drives the hydraulic motor 201 to normally work. When the operation is manually applied to the operation wire-drawing connecting piece 400 to drive the operating rod 301 to disconnect the power of the power takeoff 300, the controller controls the electric control reversing valve 203 to act to enable oil ports on two sides of the electric control reversing valve to be communicated, so that the oil inlet and the oil outlet of the hydraulic motor 201 are communicated, and the third pipeline is communicated.

In some embodiments, the linkage between the control valve 203 and the power take-off 300 is achieved through circuit control. The power takeoff can be operated in a hydraulic control mode, a pneumatic control mode, a vacuum source control mode, an electric control mode and the like. The control valve 203 is an electrically controlled directional valve, and two working oil ports of the control valve are respectively connected to the first pipeline and the second pipeline. The on-off of the two working oil ports of the electric control reversing valve can be controlled and adjusted through a circuit.

Referring to fig. 7 in particular, the power takeoff 300 is a pneumatic power takeoff, and is configured with an operating cylinder for controlling the power on/off of the power takeoff 300, and an air circuit electric control valve for controlling the operation of the operating cylinder; the branch crushing vehicle is provided with a controller which is respectively connected with the air path electric control valve and the control valve 203 so as to control the actions of the air path electric control valve and the control valve 203. The gas circuit electric control valve and the control valve 203 are linked under the control of the controller.

In some embodiments, the hydraulic pump 202 is a plunger pump; the branch crushing vehicle is also provided with a brake valve for controlling the displacement of the plunger pump to return to zero quickly. When the sensor detects that the cutting roller is blocked, the displacement of the hydraulic pump 202 can be reset to zero through the brake valve, so that the hydraulic motor 201 does not provide driving force, and the damage of equipment due to a large load is avoided.

In some embodiments, the branch shredder 200 adjusts the cutting roll speed as a function of the cutting load such that the cutting roll speed increases with increasing cutting load within a preset range.

When the cutting roll is driven by a hydraulic motor, the cutting load is the value of the pressure in the pipeline. Specifically, the cutting roller is driven by an electric proportional closed hydraulic pump to drive a closed motor, and the system utilizes a pressure sensor to detect the system pressure in real time, namely the cutting load. When the system pressure is low, the cutting load is small, and the displacement of the hydraulic pump can be controlled to be reduced, so that the rotating speed of the hydraulic motor and the cutting roller is reduced. When the system pressure is detected to be high, the cutting load of the wood is large, the rotating speed of the cutting roller can be controlled to be increased, and due to the cutting characteristic of the wood, when the rotating speed of the cutting roller is higher, the inertia of the cutting roller is larger, so that the rotating speed of the cutting roller is increased, and the wood can be cut more easily.

In some embodiments, the cutting roll rotation speed has an upper rotation speed limit. After the rotating speed of the cutting roller is reduced, the resistance and the heat generation of the cutting roller supporting bearing are reduced, so that the running load of equipment and the consumption of lubricating oil of the bearing can be reduced, and the system is more energy-saving. After the displacement of the hydraulic pump is reduced, the flow and the running power of a hydraulic system can be reduced, the heat productivity of the system can be reduced, and the system can further save energy. In addition, because the cutting roller can generate larger noise when running at high speed, the upper limit value of the rotating speed of the cutting roller is limited, the running noise of the equipment can be limited, and the interference of the branch grinder 200 to residents when running is reduced.

Referring to fig. 8, in some embodiments, a positioning module is provided on the branch shredder 200; the steps of the branch grinder 200 for determining the upper limit value of the rotating speed are as follows:

step S801, according to the positioning information provided by the positioning module, calling map data to determine the type of the operation environment where the positioning module is located; the job environment types include at least: greenbelts for houses, parks and common roads.

Step S802, determining an upper noise limit value according to the type of the working environment; wherein, each type of operation environment corresponds to a corresponding noise upper limit value.

Step S803 is to determine the upper limit value of the rotation speed of the cutting roller corresponding to the upper limit value of the noise, based on the upper limit value of the noise and the correspondence between the noise value and the rotation speed of the cutting roller.

The branch shredder 200 is provided with a controller, and the controller can execute the steps S501 to S503. The tree branch crusher 200 can determine the upper limit value of the rotating speed of the cutting roller according to the operation environment, further automatically limit the noise value generated by the tree branch crusher 200, and intelligently meet the requirements of different operation places on the noise value, so that the tree branch crusher 200 can enter various operation places to operate.

Dividing the operation area into various operation environment types according to the area function, wherein the operation environment types comprise: residential houses, schools, hospitals, parks, ordinary road green belts and the like. Each type of working environment corresponds to a corresponding noise upper limit value and is stored in a memory through presetting, and a controller reads from the memory according to the working environment. In addition, the noise upper limit value corresponding to the type of the working environment can be determined according to the relevant standard file. In addition, the correspondence between the noise value and the cutting roller rotation speed can be calibrated by a large number of tests, which are prior art and will not be described herein.

In some embodiments, the positioning module is a Beidou positioning module and/or a GPS positioning module.

In some embodiments, the branch shredder 200 also has a noise measuring device; the noise measuring device is used for measuring the actual noise value in the environment where the branch crusher 200 is located; and when the actual noise value exceeds the noise upper limit value corresponding to the type of the operation environment, sending out a corresponding prompt. The noise level generated by the branch mill 200 can fluctuate as the type of material being milled and the feed rate are varied, here by issuing prompts to alert the operator to properly control the noise level.

In the embodiment of the present application, the power takeoff is one or more groups of speed changing gears, also called power output devices, and is generally composed of a gear box, a clutch and a controller, and is connected with an output shaft of a low gear or an auxiliary box of the gearbox to output power to an external working device.

In the description herein, references to the description of the terms "some embodiments," "examples," or the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single technical solution, and such description is for clarity only, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that may be understood by those skilled in the art.

The specific embodiments described herein are merely illustrative of the spirit of the application. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the present application as defined by the appended claims.

Claims

1. The utility model provides a branch crushing cart which characterized in that, this branch crushing cart includes:

a transport vehicle (100) having a power source (101) for driving the vehicle to travel;

a branch shredder (200) disposed on the transport vehicle (100), the branch shredder (200) having a shredder assembly for shredding material; the branch shredder (200) further comprises: the hydraulic control system comprises a hydraulic motor (201) for driving the crushing assembly to work, and a hydraulic pump (202) connected with the hydraulic motor (201) through a pipeline;

the input end of the power takeoff (300) is in power connection with the power source (101); the output shaft of the power takeoff (300) is in power connection with the input shaft of the hydraulic pump (202);

a storage bin (600) arranged on the transport vehicle (100) and having an interior space (601) for accommodating material; the branch grinder (200) can discharge the ground materials into the storage box (600).

2. The branch comminution vehicle according to claim 1, characterized in that the transport vehicle (100) comprises: a headstock (103) and a rear frame (104); the material storage box (600) is arranged on the rear frame (104); the branch crusher (200) is arranged on the rear frame (104) and is positioned between the vehicle head (103) and the storage box (600).

3. The branch grinding cart according to claim 1, wherein an oil outlet of the hydraulic pump (202) is connected to an oil inlet of the hydraulic motor (201) through a first line; an oil inlet of the hydraulic pump (202) is connected to an oil outlet of the hydraulic motor (201) through a second pipeline.

4. The branch grinding vehicle of claim 3, wherein a third pipeline is disposed between the first and second pipelines; one end of the third pipeline is communicated with the first pipeline, and the other end of the third pipeline is communicated with the second pipeline; a control valve (203) capable of adjusting the on-off of the pipeline is arranged on the third pipeline;

the control valve (203) is linked with the power takeoff (300), and oil ports on two sides of the control valve (203) are disconnected when the power takeoff (300) is in power combination; when the power of the power takeoff (300) is cut off, oil ports on two sides of the control valve (203) are communicated, so that the third pipeline is communicated.

5. The branch grinding vehicle according to claim 4, wherein the power take-off (300) has an operating lever (301) for controlling the power transmission; the control valve (203) is specifically a stroke valve;

the operating rod (301) is connected with an operating pull wire connecting piece (400); the operating wire connection (400) comprises: a connecting portion (401) connected to the operating lever (301), an interlocking portion (402), and an operating portion (403);

when a first operation is applied to the operation part (403), the connection part (401) drives the operation rod (301) of the power takeoff (300) to act so that the input end of the power takeoff is in power connection with the output shaft of the power takeoff, meanwhile, the linkage part (402) acts on the valve core of the stroke valve (203), oil ports on two sides of the stroke valve (203) are disconnected, and a third pipeline is not conducted;

when the second operation is applied to the operation part (403), the connecting part (401) drives the operating rod (301) of the power takeoff (300) to act so as to disconnect the power between the input end of the power takeoff and the output shaft of the power takeoff, meanwhile, the linkage part (402) acts on the valve core of the stroke valve (203), so that oil ports on two sides of the stroke valve (203) are communicated, and the third pipeline is conducted.

6. The branch grinding vehicle according to claim 4, wherein the power take-off (300) has an operating lever (301) for controlling the power transmission; the control valve (203) is specifically an electric control reversing valve;

the branch crushing vehicle is also provided with a controller and a sensor (700); the controller is respectively connected with the sensor (700) and the control valve (203);

the operating rod (301) is connected with an operating pull wire connecting piece (400); the sensor (700) is used for sensing the action of operating the stay wire connecting piece (400); when the sensor (700) senses the action of the induction operation pull wire connecting piece (400), the controller controls the oil ports on the two sides of the electric control reversing valve (203) to be communicated or disconnected.

7. The branch comminution vehicle of claim 4, wherein the linkage between the control valve (203) and the power take-off (300) is effected by circuit control.

8. The branch grinding vehicle according to claim 7, characterized in that the power takeoff (300) is a pneumatic power takeoff equipped with an electrically controlled valve of air passage for controlling the power on/off of the power takeoff (300);

the branch smashing vehicle is provided with a controller, and the controller is respectively connected with the air path electric control valve and the control valve (203) so as to control the actions of the air path electric control valve and the control valve (203).

9. The branch grinding cart of claim 4 wherein the grinding assembly is a rotatable cutting roller that grinds branch material; and an access hole for maintaining the cutting roller is formed in the shell of the branch crusher.

10. The branch grinding cart of claim 1 wherein the grinding assembly is a rotatable cutting roller for grinding branch material; the branch crusher (200) adjusts the rotating speed of the cutting roller according to the cutting load, so that the rotating speed of the cutting roller is increased along with the increase of the cutting load in a preset range; the cutting roll rotation speed has a rotation speed upper limit value.