CN211960696U - A boom self-balancing device suitable for vehicle-mounted wide boom sprayers - Google Patents

Abstract

This patent discloses a boom self-balancing device suitable for a vehicle-mounted wide boom type sprayer, including a frame, a middle frame and a spray rod. The inner wall of the frame is provided with an arc groove guide rail, and the middle frame is provided with an arc groove guide rail. The arc rod is matched with the groove guide rail, the arc rod of the middle frame is located in the arc groove guide rail, the top of the middle frame is connected with the frame through the load-bearing tension spring, and a boss is arranged under the middle frame, and the adjustment spring and hydraulic damping are both It is fixed between the spray rod and the boss, the center of the beam of the intermediate frame is provided with a bearing hole, the outer ring of the bearing is connected in the bearing hole, the spray rod shaft is connected with the inner hole of the bearing, and the spray rod shaft is fixedly connected with a pulley. One end of the spray rod shaft is fixedly connected with the vertical beam in the middle of the spray rod, and the first fixed pulley on the spray rod shaft and the second fixed pulley on the output shaft of the motor are connected by a belt. Under the premise of not affecting the normal and stable operation of the boom sprayer, the technology effectively overcomes the defect that the boom shakes violently with the frame during the spraying operation.

Description

A boom self-balancing device suitable for vehicle-mounted wide boom sprayers

technical field

The technology relates to the field of vehicle-mounted wide-width boom-type sprayers, and provides a boom self-balancing device suitable for vehicle-mounted wide-width boom-type sprayers. On the premise of not affecting the normal and stable operation of the boom-type sprayer, the It overcomes the defect that the spray rod shakes violently with the frame during the spraying operation, and improves the spraying efficiency of the spraying liquid.

Background technique

my country is a big country in agricultural production, and the rapid development of agricultural products has brought huge economic benefits. At the same time, frequent and frequent pests and diseases have restricted the further improvement of the yield and quality of agricultural products. Nowadays, there are many kinds of pest control machinery at home and abroad. Among them, airborne boom sprayers are widely used in large-scale agricultural production for their outstanding advantages of large spray width and high control efficiency. A boom sprayer is a motorized sprayer with a nozzle mounted on a horizontal or vertical boom. This type of sprayer has high operating efficiency, good spraying quality, and even distribution of spray liquid. It is suitable for spraying liquid preparations such as various pesticides, fertilizers and plant production regulators on a large area. It is widely used in field crops, lawns, nurseries, wall-type sprays Vineyards and specific occasions (such as airports, road snowmelt, roadside weeding, etc.). Today, boom sprayers are mainly divided into three categories: self-propelled, trailed, and suspended. The length of the boom is mostly between 10-36 meters, and the single fulcrum suspension and spring shock absorption are mostly used between the boom and the frame to ensure the balance effect. At the same time, in order to more precisely control the balance of the boom during operation, a sensor is generally installed on the boom to sense the balance state of the boom in real time. mechanism) work, adjust the position of the spray boom to keep it level.

It is not difficult to find through research that the main reasons for the left and right shaking of the spray boom are: the current boom-type sprayer frame and the spray boom are mostly fixed together, and the shaking of the body frame due to road conditions is inevitable during operation, so It also involves the spray boom swinging left and right, which affects the work efficiency. It can be seen that the key to whether the boom can be relatively balanced is whether it can ensure that the rigid connection between the frame and the boom can be reduced, so that the two can rotate relatively freely. At present, there are few researches on the self-balancing device for longer booms in China, and the self-balancing booms on the market generally have the shortcomings of slow response and large shaking, and it is difficult to promote on a large scale.

SUMMARY OF THE INVENTION

The technical problem to be solved by this patent is to provide a boom self-balancing device suitable for vehicle-mounted wide-width boom-type sprayers in view of the shortcomings of the above-mentioned prior art. On the premise of not affecting the normal and stable operation of the boom sprayer, the balancing device effectively overcomes the defect that the boom shakes violently with the frame during the spraying operation, and improves the spraying efficiency of the liquid medicine.

In order to realize the above-mentioned technical purpose, the technical scheme adopted by this patent is:

A boom self-balancing device suitable for a vehicle-mounted wide boom type sprayer, including a frame, an intermediate frame, a boom, a load-bearing tension spring, an adjustment spring, a hydraulic damping, a boom shaft, a bearing, a pulley, and a belt and electric motor, the inner wall of the frame is provided with an arc-shaped groove guide rail, the intermediate frame is provided with an arc-shaped rod matched with the arc-shaped groove guide rail, and the arc-shaped rod of the intermediate frame is located in the arc-shaped groove guide rail and the arc-shaped rod is located in the arc-shaped groove guide rail. The shaped rod can slide freely in the arc groove guide rail, the middle frame is located inside the frame and the top of the middle frame is connected with the frame through a load-bearing tension spring, a boss is arranged below the middle frame, and the adjustment spring is fixedly connected between the spray rod and the boss, the hydraulic damping is connected between the boss and the spray rod, the center position of the beam of the intermediate frame is provided with a bearing hole, and the outer ring of the bearing is tightly connected in the bearing hole, The spray rod shaft is tightly connected with the inner hole of the bearing, the spray rod shaft is also fixedly connected with a pulley one, one end of the spray rod shaft is fixedly connected with the vertical beam in the middle of the spray rod, and the pulley one is fixed on the spray rod shaft. The second pulley, which is fixedly connected to the output shaft of the electric motor, is connected by a belt, and the electric motor is fixedly connected to the top of the intermediate frame.

As a further improved technical solution of this patent, the frame is a square frame, and the inner sides of the four vertical bars of the frame are provided with arc-shaped groove guide rails; there are four arc-shaped bars on the middle frame, The four arc-shaped rods are respectively slidably connected with the arc-shaped groove guide rails on the inner side of the four vertical rods.

As a further improved technical solution of the present patent, the top of the intermediate frame is provided with four pull-tabs inclined at 45°, and the four corner positions of the top of the frame are provided with pull-tabs inclined at 45°. There are four load-bearing tension springs, and the first pulling ring of the intermediate frame and the second pulling ring of the frame are connected by the load-bearing tension spring.

As a further improved technical solution of this patent, there are two adjustment springs and two hydraulic dampers, two bosses are arranged under the middle frame and the two bosses are symmetrically distributed.

As a further improved technical solution of this patent, there are three pull rings fixed on the boss, two pull rings below the spray rod, three pull rings on one boss and one pull ring under the spray rod The fourth is connected by hydraulic damping, and the pull ring three on the other boss is connected with the other pull ring four under the spray rod through hydraulic damping.

As a further improved technical solution of this patent, the middle frame is provided with two beams and the two beams are symmetrically distributed in the front and rear, the center of each beam is provided with a bearing hole, and each bearing hole is connected with a bearing. The spray boom shaft is tightly fitted with the two bearing inner holes.

As a further improved technical solution of this patent, the top of the intermediate frame is provided with a first bolt hole, the motor casing is provided with a second bolt hole, and the first bolt hole of the intermediate frame and the second bolt hole of the motor casing are fixedly connected by bolts.

As a further improved technical solution of this patent, the frame includes a left part frame and a right part frame, the end part of the left part frame is provided with three bolt holes, and the end part of the right part frame is provided with three bolt holes. Bolt hole four, bolt hole three and bolt hole four are fastened together by bolts.

As a further improved technical solution of this patent, a spirit level is provided on the spray boom.

The beneficial effects of this patent are:

This patent provides a boom self-balancing device suitable for a vehicle-mounted wide boom type sprayer. Arc groove guide rails are designed on both sides of the frame and on both sides of the middle frame connected with the boom, and are matched with them. The arc-shaped rod enables the two to rotate relatively freely, and is equipped with other shock absorption and adjustment mechanisms to further achieve the purpose of balance.

When the above-mentioned boom self-balancing device suitable for vehicle-mounted wide boom type sprayer works: the frame shakes with the left and right sides of the vehicle body, but because there is no rigid connection between the frame and the middle frame, it relies on the two sides of the frame. The side arc groove guide rails cooperate with the arc rods on both sides of the middle frame to form a movable connection, and the four corners of the frame and the middle frame are provided with pull rings, and the corresponding pull rings are connected by load-bearing tension springs. The load-bearing tension spring mainly bears the entire weight of the middle frame and its connections. On the one hand, the friction between the arc groove guide rails on both sides of the frame and the arc rods on both sides of the middle frame is reduced. On the other hand, the load-bearing tension spring is a flexible connection, reducing the It avoids the connection between the frame and the middle frame, and is also conducive to buffering and shock absorption during mutual rotation. Therefore, when the frame rotates left and right around the center, the middle frame and its connecting objects will always automatically maintain a horizontal state under the action of gravity. At the same time, a boss is symmetrically arranged under the middle frame, and an adjustment spring and hydraulic damping are fixedly connected between the boss and the spray rod. The hydraulic damping has the characteristics that the faster the speed, the greater the resistance, which can effectively suppress the sudden change of the state of the spray rod. . And when the boom is horizontal, the adjustment spring is in the original length, that is, it is not stressed. Once the boom is tilted, the adjustment springs on both sides are tensioned and compressed, which together force the boom to return to the horizontal state. When the frame shake is further intensified and greatly exceeds the above-mentioned automatic adjustment capability of the spray boom, the compensation mechanism is activated. The level meter set on the boom detects the inclination angle of the boom in real time and feeds it back to the control system. When the inclination angle is greater than 5°, the control system will control the motor to work and drive the pulley to rotate the corresponding angle to make the boom return to the horizontal state.

Description of drawings

Figure 1 is a schematic diagram of a boom self-balancing device suitable for a vehicle-mounted wide boom sprayer.

Figure 2 is another schematic diagram of a boom self-balancing device suitable for a vehicle-mounted wide boom sprayer.

Figure 3 is a schematic diagram of the rack.

Figure 4 is a schematic diagram of the intermediate frame.

Figure 5 is a schematic diagram of the spray boom.

Detailed ways

The specific embodiments of this patent are further described below according to the accompanying drawings 1-5:

Referring to Figures 1-5, a spray boom self-balancing device suitable for a vehicle-mounted wide boom sprayer, including a frame 3, an intermediate frame 9, a spray boom 1, a load-bearing tension spring 4, an adjustment spring 12, Hydraulic damping 13, spray rod shaft 14, bearing 8, pulley 11, belt 2 and motor 6, the inner wall of the frame 3 is provided with an arc-shaped groove guide rail 16, and the intermediate frame 9 is provided with an arc-shaped groove guide rail 16 matched arc rods 24, the arc rod 24 of the intermediate frame 9 is located in the arc groove guide 16 and the arc rod 24 can slide freely in the arc groove guide 16, the intermediate frame 9 is located in the rack 3. The inner side and the top of the middle frame 9 are connected with the frame 3 through the load-bearing tension spring 4. A boss 25 is provided below the middle frame 9, and the adjustment spring 12 is fixedly connected between the spray rod 1 and the boss 25, so The hydraulic damper 13 is connected between the boss 25 and the spray rod 1, a bearing hole is provided at the center of the beam 23 of the intermediate frame 9, and the outer ring of the bearing 8 is tightly fitted in the bearing hole, and the spray rod The shaft 14 is tightly connected with the inner hole of the bearing 8, and a pulley 11 is also fixed on the spray rod shaft 14. One end of the spray rod shaft 14 is fixed with the vertical beam 27 in the middle of the spray rod 1, and the spray rod shaft 14 is fixed on the The first pulley 11 is connected with the second pulley 5 of the output shaft of the motor 6 through the belt 2, and the motor 6 is fixed on the top of the intermediate frame 9.

In this embodiment, referring to FIG. 3 , the rack 3 is a square frame, and the inner sides of the four vertical bars of the rack 3 are provided with arc-shaped groove guide rails 16 ; referring to FIG. 4 , the middle frame 9 is There are four arc-shaped rods 24, and the four arc-shaped rods 24 are respectively slidingly connected with the arc-shaped groove guide rails 16 inside the four vertical rods.

In this embodiment, referring to FIG. 4 , the top of the intermediate frame 9 is provided with four pull tabs 19 inclined at 45°. Referring to FIG. 3 , the four corner positions of the top of the frame 3 are all provided with an inclination of 45° The second pull ring 15 has four load-bearing tension springs 4 .

In this embodiment, referring to FIG. 1 , there are two adjusting springs 12 and hydraulic dampers 13 ; referring to FIG. 4 , two bosses 25 are arranged below the intermediate frame 9 and the two bosses 25 are symmetrically distributed.

In this embodiment, referring to FIG. 4 , a third pull ring 26 is fixedly connected to the boss 25 . Referring to FIG. 5 , there are two pull rings 28 under the spray bar 1 , one pull ring on the boss 25 is The third ring 26 is connected with a pull ring four 28 below the spray rod 1 through the hydraulic damping 13 , and the pull ring three 26 on the other boss 25 is connected with another pull ring four 28 under the spray rod 1 through the hydraulic damping 13 .

In this embodiment, referring to FIG. 4 , the intermediate frame 9 is provided with two beams 23 and the two beams 23 are symmetrically distributed in the front and rear, and the center position of each beam 23 is provided with a bearing hole (respectively the bearing hole 1 21 and the bearing The second hole 22), each bearing hole is connected with a bearing 8, and the spray rod shaft 14 is connected with the inner holes of the two bearings 8 in a tight fit.

In this embodiment, referring to FIG. 4 , the top of the intermediate frame 9 is provided with a bolt hole 1 20 . Referring to FIG. 1 , the housing of the motor 6 is provided with a bolt hole 2 7 , and the bolt hole 1 20 of the intermediate frame 9 is connected to the motor 6 . 6. The bolt holes 2 and 7 of the casing are fastened with bolts.

In this embodiment, referring to FIG. 3 , the rack 3 includes a left part of the rack and a right part of the rack, the end of the left part of the rack is provided with bolt holes 3 17 , and the end of the right part of the rack is provided with bolt holes 3 17 . Bolt holes four 18 are provided, bolt holes three 17 and bolt holes four 18 are fastened together by bolts.

In this embodiment, referring to FIG. 1 , the spray boom 1 is provided with a level 10 .

In this embodiment, the load-bearing tension spring 4 between the frame 3 and the intermediate frame 9 is connected obliquely with the second pull ring 15 through the first pull ring 19 set at an inclination of 45°. The frame 3 is divided into left and right parts: the left part of the frame and the right Part of the frame (to facilitate the installation of the middle frame 9), the two are connected by bolts through the middle bolt holes 3 17 and bolt holes 4 18. The middle frame 9 is provided with a bolt hole 1 20 and the motor 6 is fixedly connected by bolts, the center position of the cross beam 23 symmetrically arranged in the front and rear of the middle frame 9 is provided with a bearing hole 1 21 and a bearing hole 2 22, and the lower part of the middle frame 9 is symmetrically provided with a boss. 25. A pull ring 3 26 is fixed on the boss 25, the adjustment spring 12 is fixed between the spray rod 1 and the boss 25, and the hydraulic damper 13 is connected to the pull ring 3 26 on the boss 25 and the bottom of the spray rod 1. Pull ring four between 28. The outer ring of the bearing 8 is tightly fitted in the bearing hole 1 21 and the bearing hole 2 22, the spray rod shaft 14 is tightly fitted with the inner hole of the bearing 8, the spray rod shaft 14 is also fixed with a pulley, and one end of the spray rod shaft 14 is connected to the spray rod. The vertical beam 27 of 1 is fixed. The pulley fixed on the spray rod shaft 14 is connected with the pulley fixed on the output shaft of the motor 6 through the belt 2 .

When the vehicle-mounted wide boom sprayer operates, the frame 3 will shake with the left and right sides of the vehicle body, but because the frame 3 and the middle frame 9 are not rigidly connected together, they rely on the arc grooves on both sides of the frame 3 The guide rail 16 cooperates with the arc-shaped rods 24 on both sides of the middle frame 9 to form a movable connection, and the four corners of the frame 3 and the middle frame 9 are respectively provided with two pull rings 15 and one pull ring 19, and two pull rings 15 It is connected obliquely with the pull ring one 19 by the load-bearing tension spring 4 . The load-bearing tension spring 4 mainly bears the entire weight of the middle frame 9 and its connecting objects. The spring 4 belongs to a flexible connection, which reduces the rigid involvement of the frame 3 and the intermediate frame 9, and is also beneficial to the buffering and shock absorption during the mutual rotation. Therefore, when the frame 3 rotates left and right around the center, the intermediate frame 9 and its connecting objects will always automatically maintain a horizontal state under the action of gravity. At the same time, the adjustment spring 12 and the hydraulic damper 13 are fixedly connected between the boss 25 symmetrically arranged under the middle frame 9 and the spray rod 1 . Sudden change of state. And when the boom 1 is horizontal, the adjustment spring 12 is in the original length, that is, the unstressed state. Once the boom 1 is tilted, the adjustment springs 12 on both sides are pulled and the other is compressed, which together force the boom 1 to return to the horizontal state. When the shaking of the frame 3 is further intensified and greatly exceeds the above-mentioned automatic adjustment capability of the spray boom 1, the compensation mechanism will be activated for further adjustment. The level 10 set on the boom 1 detects the inclination angle of the boom 1 in real time and feeds it back to the control system (existing technology). When the inclination angle is greater than 5°, the control system (existing technology) will control the motor 6 to work to drive the belt The wheel rotates by the corresponding angle and the boom 1 is then returned to the horizontal state.

The beneficial effects of the present patent are as follows: the above-mentioned spray-rod self-balancing device suitable for vehicle-mounted wide-width spray-rod sprayers effectively overcomes the need for the spray-rod 1 to apply the There is a defect that the frame 3 shakes violently during the medicine operation, which improves the spraying efficiency of the medicine liquid.

The protection scope of this patent includes, but is not limited to, the above embodiments. The protection scope of this patent is subject to the claims. Any replacement, deformation, and improvement made to this technology that are easily thought of by those skilled in the art all fall within the scope of this patent. protected range.

Claims (9)

1. a spray boom self-balancing device suitable for vehicle-mounted wide spray boom type sprayer, is characterized in that: comprise frame, intermediate frame, spray boom, load-bearing tension spring, adjustment spring, hydraulic damping, spray boom shaft, bearing , Pulley 1, belt and motor, the inner wall of the frame is provided with an arc-shaped groove guide rail, the intermediate frame is provided with an arc-shaped rod matched with the arc-shaped groove guide rail, and the arc-shaped rod of the intermediate frame is located in the arc-shaped groove guide rail. The middle frame is located inside the frame and the top of the middle frame is connected with the frame through a load-bearing tension spring, and a boss is arranged below the middle frame, The adjusting spring is fixedly connected between the spray rod and the boss, the hydraulic damping is connected between the boss and the spray rod, a bearing hole is provided at the center of the beam of the intermediate frame, and the outer ring of the bearing is tightly fitted Connected in the bearing hole, the spray rod shaft is tightly connected with the bearing inner hole, the spray rod shaft is also fixedly connected with a pulley, one end of the spray rod shaft is fixed with the vertical beam in the middle of the spray rod, and the spray rod shaft is connected to the vertical beam in the middle of the spray rod. The fixed pulley one is connected with the fixed pulley two of the output shaft of the electric motor through a belt, and the electric motor is fixed on the top of the intermediate frame. 2. The boom self-balancing device suitable for a vehicle-mounted wide boom type sprayer according to claim 1, characterized in that: the frame is a cube frame, and the inner sides of the four vertical rods of the rack are Arc-shaped groove guide rails are provided; there are four arc-shaped rods on the intermediate frame, and the four arc-shaped rods are respectively slidably connected with the arc-shaped groove guide rails on the inner side of the four vertical rods. 3. The spray-rod self-balancing device suitable for a vehicle-mounted wide-width spray-rod sprayer according to claim 2, characterized in that: the top of the middle frame is provided with four pull rings inclined at 45°, the The four corner positions of the top of the rack are provided with two pull rings inclined at 45°, and there are four load-bearing tension springs. 4. The spray-rod self-balancing device suitable for a vehicle-mounted wide-width spray-rod sprayer according to claim 3, characterized in that: the adjustment spring and the hydraulic damping have two, and the middle frame is provided with two convex and the two bosses are symmetrically distributed. 5. The spray-rod self-balancing device suitable for a vehicle-mounted wide-width spray-rod sprayer according to claim 4, characterized in that: a third pull ring is fixedly connected to the top of the boss, and the pull ring below the spray rod There are 2 of four, one pull ring 3 on the boss is connected with a pull ring 4 under the spray rod through hydraulic damping, and the pull ring 3 on the other boss is connected with another pull ring 4 under the spray rod through hydraulic damping . 6. The spray-rod self-balancing device suitable for a vehicle-mounted wide-width spray-rod sprayer according to claim 5, characterized in that: the intermediate frame is provided with two beams and the two beams are symmetrically distributed front and rear, and each beam Bearing holes are arranged at the central position of the spray rod, each bearing hole is connected with a bearing, and the spray rod shaft is tightly connected with the two bearing inner holes. 7. The spray-rod self-balancing device suitable for a vehicle-mounted wide-width spray-rod sprayer according to claim 1, characterized in that: the top of the intermediate frame is provided with a first bolt hole, and the motor casing is provided with a second bolt hole , the first bolt hole of the intermediate frame and the second bolt hole of the motor casing are fixedly connected by bolts. 8. The boom self-balancing device suitable for vehicle-mounted wide boom sprayer according to claim 1, wherein the frame comprises a left part frame and a right part frame, and the left part frame The end of the frame is provided with three bolt holes, the end of the right part of the frame is provided with four bolt holes, and the three bolt holes and the four bolt holes are fixedly connected together by bolts. 9 . The spray boom self-balancing device suitable for a vehicle-mounted wide spray boom type sprayer according to claim 1 , wherein a spirit level is arranged on the spray boom. 10 .

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