High ground clearance vertical shaft structure

Abstract

The utility model discloses a high-ground-clearance vertical shaft structure, and belongs to the technical field of pesticide spraying machines. One end of the support arm is sleeved on the vertical shaft through a shaft sleeve part, and the pneumatic execution part is arranged at the top end of the vertical shaft and can stretch out and draw back in the axis direction of the vertical shaft. The traction component is connected between the pneumatic execution component and the shaft sleeve part and can be folded; the traction part is provided with a traction upper plate for bearing the pneumatic execution part and fixedly connected with the vertical shaft and a traction plate fixedly connected with the top end of the shaft sleeve part; wherein the pneumatic execution component is fixedly connected with the traction plate through a pulling frame, the pneumatic valve is fixedly connected to the traction plate and connected with the pneumatic execution component through a pipeline, and a control rod is connected between the traction upper plate and the pneumatic valve and used for controlling air inlet or air exhaust of the pneumatic valve in a linkage mode along with the pneumatic execution component. The device is easy to install and maintain, and effectively solves the problem of unstable operation caused by uneven ground during field operation of agricultural machinery.

Description

Technical Field

[0001] This utility model relates to the field of spraying machine technology, and in particular to a high ground clearance vertical shaft structure for a self-propelled spraying machine. Background Technology

[0002] In the prior art, the high clearance self-propelled boom sprayer mainly includes a chassis, a frame mounted on the chassis, and an extendable boom mounted on the frame, through which various liquid preparations such as pesticides and fertilizers are sprayed;

[0003] The chassis of a self-propelled boom sprayer mainly consists of wheels, each wheel corresponding to a vertical axle. The vertical axle is connected to the frame and supports the frame, achieving a high ground clearance. Due to the high ground clearance, this type of self-propelled boom sprayer is highly adaptable and flexible during operation. However, there are still drawbacks. When operating in the field, the ground is often uneven, causing the sprayer to move up and down. The constant height of the vertical axle means that the frame cannot maintain stability when facing different terrains. This unstable operating height leads to poor spraying quality. Utility Model Content

[0004] The purpose of this invention is to overcome the defects of the existing technology and provide a high ground clearance vertical shaft structure that is height-adjustable, meets the automatic leveling requirements of agricultural machinery, ensures that agricultural machinery can maintain a stable operating height under different terrains, and improves the quality and efficiency of operation.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model discloses a high ground clearance vertical shaft structure, comprising:

[0007] A vertical shaft with its bottom end fixedly connected to a wheel via a motor bracket; a support arm with one end fitted onto the vertical shaft via a bushing; a pneumatic actuator located at the top of the vertical shaft and capable of extending and retracting along its axial direction; and

[0008] A foldable traction component connecting the pneumatic actuator and the bushing portion;

[0009] The traction component has a traction upper plate that carries the pneumatic actuator and is fixedly connected to the vertical shaft, and a traction plate that is fixedly connected to the top end of the bushing portion.

[0010] The pneumatic actuator is fixedly connected to the traction plate via a pull frame, and also includes...

[0011] A pneumatic valve is fixedly connected to the traction plate and connected to the pneumatic actuator through a pipeline. A control rod is connected between the traction plate and the pneumatic valve to control the pneumatic valve to intake or exhaust air in conjunction with the pneumatic actuator.

[0012] Furthermore, the control lever is a folding lever, with one end connected to the pneumatic valve and the other end rotatably connected to the traction upper plate. A connecting rubber block is provided at the bending position in the middle of the control lever.

[0013] Furthermore, the traction component includes a foldable pot-shaped assembly for rigidly connecting the traction plate and the traction upper plate.

[0014] Furthermore, the pot socket assembly includes a first pot socket and a second pot socket;

[0015] One end of the first pot plug is rotatably connected to the traction plate via a pin, and the other end is rotatably connected to one end of the second pot plug via the pin. The other end of the second pot plug is rotatably connected to the traction upper plate via the pin.

[0016] Furthermore, the pot-shaped assembly also includes anti-collision rubber blocks for flexibly preventing the traction plate from contacting the traction upper plate.

[0017] Furthermore, the traction component also includes a traction connecting plate, the top end of the bushing portion has a flange joint, the traction connecting plate is sleeved outside the flange joint and fixedly connected to the lower surface of the traction plate, and the bushing portion of the support arm can rotate relative to the vertical shaft.

[0018] Furthermore, the pull frame includes pull plates fixed to both sides of the traction plate, and a top plate is fixedly connected to the top of the two pull plates. The top plate is fixedly connected to the pneumatic actuator.

[0019] Furthermore, the pneumatic actuator is an air bag or a cylinder.

[0020] Furthermore, the support arm is cast.

[0021] In the above technical solution, the high ground clearance vertical shaft structure provided by this utility model has the following advantages:

[0022] The high ground clearance vertical shaft structure designed in this utility model has a pneumatic actuator that can extend and retract along the axis of the vertical shaft and a foldable traction component at the top of the vertical shaft. The traction component has a traction upper plate and a traction plate. The upper part of the traction upper plate is fixedly connected to the pneumatic actuator, and the lower part is fixedly connected to the top of the vertical shaft. The traction plate is fixedly connected to the top of the support arm bushing. The pneumatic actuator is fixedly connected to the traction plate through a pull frame. When the pneumatic actuator extends or retracts, the pull frame drives the traction plate to move the support arm up and down along the axis of the vertical shaft, thereby making the height of the vertical shaft adjustable and moving the support arm up and down. This allows the frame to be automatically leveled, enabling agricultural machinery to maintain a stable working height in different terrains, improving the quality and efficiency of operation. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0024] Figure 1 This is an isometric view of the high ground clearance vertical shaft structure disclosed in this utility model;

[0025] Figure 2 This is an isometric view of the high ground clearance vertical axis structure disclosed in this utility model from another perspective;

[0026] Figure 3 This is a front view of the high ground clearance vertical shaft structure disclosed in this utility model;

[0027] Figure 4 This is a partially enlarged view of the high ground clearance vertical shaft structure disclosed in this utility model;

[0028] Figure 5 This is a schematic diagram of the high ground clearance vertical shaft support structure disclosed in this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Wheel; 11. Motor bracket; 2. Vertical shaft; 3. Support arm; 4. Traction component; 41. Traction plate; 42. Traction upper plate; 43. Traction connecting plate; 44. Anti-collision rubber block; 45. Base; 46. First pot inlet; 47. Second pot inlet; 48. Piping pin; 5. Pneumatic actuator; 6. Pull frame; 61. Top plate; 62. Pull plate; 7. Pneumatic valve; 71. Pipeline; 8. Control rod; 81. First pull rod; 82. Second pull rod; 83. Connecting rubber block. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0032] See Figure 1-3 As shown;

[0033] A utility model discloses a high ground clearance vertical shaft structure, comprising: a wheel 1, a vertical shaft 2, a support arm 3, and a traction component 4;

[0034] The bottom end of the vertical shaft 2 is fixedly connected to the wheel 1 via the motor bracket 11, and the top end of the vertical shaft 2 is fixedly connected to a pneumatic actuator 5 that can extend and retract along its axial direction. The vertical shaft 2 is usually made of high-strength metal material to ensure its structural stability and load-bearing capacity.

[0035] The support arm 3 is cast. One end of the support arm 3 has a bushing part, which is fitted onto the vertical shaft 2 and can slide up and down along the vertical shaft 2. The other end of the support arm 3 is connected to the vehicle frame.

[0036] The traction component 4 has a traction upper plate 42 and a traction plate 41. The upper part of the traction upper plate 42 is fixedly connected to a telescopic pneumatic actuator 5. The lower part of the traction upper plate 42 is fixedly connected to the top of the vertical shaft 2. The top of the bushing of the support arm 3 is fixedly connected to the traction plate 41.

[0037] The pneumatic actuator 5 is fixedly connected to the traction plate 41 via the pull frame 6. The pneumatic actuator 5 is an airbag or cylinder in the prior art. This embodiment only takes an airbag as an example. When the airbag is inflated or deflated, the pull frame 6 drives the traction plate 41 to drive the support arm 3 to float up and down along the vertical shaft 2. A pneumatic valve 7 is fixedly connected to the traction plate 41. The pneumatic valve 7 is installed on the air supply pipe 71 of the airbag. A control rod 8 is connected between the traction plate 42 and the pneumatic valve 7 to control the air intake or exhaust of the pneumatic valve 7, thereby achieving leveling.

[0038] In this structure, an airbag is fixed to the top of the vertical shaft 2. In the working state, the vertical shaft 2 is in direct contact with the ground through the wheel 1. When the airbag is inflated, the internal air pressure increases and the volume expands, generating an upward thrust. When the airbag is deflated, the internal air pressure decreases and the volume contracts, and the upward thrust disappears or decreases. By changing the air pressure inside the airbag, the height of the support arm 3 can be changed, thereby realizing the adjustment of the frame height.

[0039] Pneumatic valve 7 controls the inflation and deflation of the airbag. This pneumatic valve 7, manufactured by China Ruili Group and code-named 29080010010, is fixedly connected to the towing plate 41 and connected to the airbag via pipe 71. One end of pipe 71 is connected to the airbag, and the other end is connected to an external air system to provide air to the airbag. A control lever 8 connects the towing plate 42 and the pneumatic valve 7. When encountering uneven road surfaces, or when the vehicle frame is empty or fully loaded, the airbag will sink or rise under external force. The control arm 3 drives the frame to move up and down. The control lever 8 controls the pneumatic valve 7 to adjust the air pressure in the airbag by controlling the air intake and exhaust, so that the control arm 3 maintains a certain height. When the control arm 3 rises, the control lever 8 drives the control valve 7 to exhaust air, so that the height of the control arm 3 is lowered. When the control arm 3 falls, the control lever 8 drives the control valve 7 to inflate air, so that the height of the control arm 3 is raised, so that the control arm 3 is maintained at a balanced height, thereby achieving the purpose of leveling. Moreover, the airbag also plays a role in shock absorption and cushioning, effectively protecting the control arm 3 and the frame.

[0040] Preferably, the control lever 8 is a folding lever, with one end connected to the pneumatic valve 7 and the other end rotatably connected to the traction upper plate 42. A connecting rubber block 83 is provided at the bending position in the middle of the control lever 8.

[0041] Specifically, the control lever 8 includes a first pull rod 81 and a second pull rod 82. The top end of the first pull rod 81 is rotatably connected to a valve bracket fixed to the traction upper plate 42. A connecting rubber block 83 is inserted into the bottom end of the first pull rod 81. The side of the connecting rubber block 83 is rotatably connected to the second pull rod 82. The end of the second pull rod 82 is connected to the switch position of the pneumatic valve 7. In the working state, when the height of the support arm 3 rises, the distance between the traction upper plate 42 and the traction plate 41 decreases, and the first pull rod 81 and the second pull rod 82 fold at the position of the connecting rubber block 83. The second pull rod 82 drives the pneumatic valve 7 to rotate counterclockwise to exhaust air. When the height of the support arm 3 falls, the distance between the traction upper plate 42 and the traction plate 41 increases, and the first pull rod 81 and the second pull rod 82 unfold at the position of the connecting rubber block 83. The second pull rod 82 drives the pneumatic valve 7 to rotate clockwise to inflate air.

[0042] See Figure 4 As shown:

[0043] Preferably, the traction component 4 includes a foldable pot-shaped assembly for rigidly connecting the traction plate 41 and the traction upper plate 42, which serves to overload protect the support arm 3 and prevent the pneumatic actuator 5, the pull frame 6 from failing or falling to the bottom of the vertical shaft 2 in bad road conditions, causing damage to other components.

[0044] See Figure 4 As shown:

[0045] Preferably, the pot socket assembly includes a first pot socket 46 and a second pot socket 47;

[0046] One end of the first pot plug 46 is rotatably connected to the traction plate 41 via a pin 48, and the other end is rotatably connected to one end of the second pot plug 47 via a pin 48. The other end of the second pot plug 47 is rotatably connected to the traction upper plate 42 via a pin 48. When the distance between the traction plate 41 and the traction upper plate 42 decreases, the first pot plug 46 and the second pot plug 47 fold at the connection position. When the distance between the traction plate 41 and the traction upper plate 42 increases, the first pot plug 46 and the second pot plug 47 extend.

[0047] See Figure 4 As shown:

[0048] Preferably, the pot-slot assembly also includes anti-collision rubber blocks 44, which are used to flexibly stop the contact between the traction plate 41 and the traction upper plate 42. Specifically, anti-collision rubber blocks 44 are fixedly connected to both sides of the traction plate 41 through the base 45. In this structure, when the traction plate 41 faces different working conditions and rises indefinitely, the rigid contact between the traction plate 41 and the traction upper plate 42 is avoided. Anti-collision rubber blocks 44 are fixedly connected to the upper surface of the traction plate 41, and vibration is absorbed and noise is reduced by the contact between the anti-collision rubber blocks 44 and the lower surface of the traction upper plate 42.

[0049] The traction component 4 also includes a traction connecting plate 43. The top of the bushing has a flange joint. The traction connecting plate 43 is sleeved on the outside of the flange joint and fixedly connected to the lower surface of the traction plate 41. The traction connecting plate 43 is a split structure. During assembly, the traction connecting plate 43 is sleeved on the outside of the flange joint at the top of the bushing of the support arm 3 from both sides and then fixedly connected to the traction plate 41 using bolt assemblies. That is to say, the traction connecting plate 43 prevents the bushing of the support arm 3 from detaching from the traction plate 41, so that the support arm 3 can rotate around the vertical shaft 2 to achieve the purpose of steering.

[0050] Preferably, the pull frame 6 includes pull plates 62 fixedly connected to both sides of the traction plate 41, and a top plate 61 fixedly connected to the top of the two pull plates 62. The top plate 61 is fixedly connected to the pneumatic actuator 5. In this structure, the pull plates 62 and the traction plate 41, and the pull plates 62 and the top plate 61 are all fixedly connected by bolt assemblies.

[0051] In the above technical solution, the present invention provides a high ground clearance vertical shaft structure, the working principle of which is as follows:

[0052] The leveling process during the descent of the self-propelled sprayer chassis:

[0053] When the machine encounters a ground protrusion while traveling in the field, the frame will descend accordingly. At this time, the control lever 8 senses the airbag sinking and simultaneously drives the pneumatic valve 7 to inflate the airbag. As the air pressure inside the airbag increases, the airbag expands and generates an upward thrust, pushing the vertical shaft 2 upward, which in turn drives the frame to rise until the frame returns to the set height. Then, the pneumatic valve 7 stops inflating the airbag, and the leveling process is completed.

[0054] The leveling process when the self-propelled sprayer chassis is raised:

[0055] When the machine travels to a depression in the ground, the frame rises. At this time, control lever 8 senses the rise of the airbag and simultaneously drives pneumatic valve 7 to expel the gas from the airbag. The air pressure inside the airbag decreases, its volume shrinks, and the upward thrust decreases. The vertical shaft 2 descends under the action of gravity, driving the frame down until the frame height reaches the set state. Then, pneumatic valve 7 stops expelling gas, completing the leveling process.

[0056] This self-propelled sprayer features a high ground clearance vertical shaft structure, enabling automatic leveling. It senses uneven ground in real time and automatically adjusts the machine height without manual intervention, improving efficiency and accuracy. It is highly adaptable, capable of handling various complex field terrains, ensuring stable operation under different road conditions and reducing the impact of terrain undulations on work quality. Its relatively simple and compact structure makes it easy to install and maintain, effectively solving the problem of unstable operation caused by uneven ground in the field, and providing more reliable support for agricultural production.

[0057] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high ground clearance vertical shaft structure, characterized in that, include: A vertical shaft (2) whose bottom end is fixedly connected to a wheel (1) via a motor bracket (11); a support arm (3) whose one end is fitted onto the vertical shaft (2) via a bushing; a pneumatic actuator (5) located at the top of the vertical shaft (2) and capable of extending and retracting along its axial direction; and A foldable traction component (4) is connected between the pneumatic actuator (5) and the bushing. The traction component (4) has a traction upper plate (42) that carries the pneumatic actuator (5) and is fixedly connected to the vertical shaft (2) and a traction plate (41) that is fixedly connected to the top of the bushing. The pneumatic actuator (5) is fixedly connected to the traction plate (41) via a pull bracket (6), and also includes... A pneumatic valve (7) is fixedly connected to the traction plate (41) and connected to the pneumatic actuator (5) through a pipeline (71). A control rod (8) is connected between the traction plate (42) and the pneumatic valve (7) to control the pneumatic valve (7) to intake or exhaust air in conjunction with the pneumatic actuator (5).

2. The high ground clearance vertical shaft structure according to claim 1, characterized in that: The control lever (8) is a folding lever, one end of which is connected to the pneumatic valve (7), and the other end is rotatably connected to the traction upper plate (42). A connecting rubber block (83) is provided at the bending position in the middle of the control lever (8).

3. The high ground clearance vertical shaft structure according to claim 1, characterized in that: The traction component (4) includes a foldable pot-shaped assembly for rigidly connecting the traction plate (41) and the traction upper plate (42).

4. The high ground clearance vertical shaft structure according to claim 3, characterized in that: The pot socket assembly includes a first pot socket (46) and a second pot socket (47); One end of the first pot plug (46) is rotatably connected to the traction plate (41) via a pin (48), and the other end is rotatably connected to one end of the second pot plug (47) via the pin (48). The other end of the second pot plug (47) is rotatably connected to the traction upper plate (42) via the pin (48).

5. The high ground clearance vertical shaft structure according to claim 4, characterized in that: The pot assembly also includes a collision-resistant rubber block (44) for flexibly preventing the traction plate (41) from contacting the traction upper plate (42).

6. The high ground clearance vertical shaft structure according to claim 3, characterized in that: The traction component (4) also includes a traction connecting plate (43), the top end of the bushing has a flange joint, the traction connecting plate (43) is sleeved outside the flange joint and fixedly connected to the lower surface of the traction plate (41), and the bushing of the support arm (3) can rotate relative to the vertical shaft (2).

7. The high ground clearance vertical shaft structure according to claim 1, characterized in that: The pull frame (6) includes pull plates (62) fixedly connected to both sides of the traction plate (41), and a top plate (61) is fixedly connected to the top of the two pull plates (62). The top plate (61) is fixedly connected to the pneumatic actuator (5).

8. The high ground clearance vertical shaft structure according to any one of claims 1-7, characterized in that: The pneumatic actuator (5) is an air bag or a cylinder.

9. The high ground clearance vertical shaft structure according to any one of claims 1-7, characterized in that: The support arm (3) is cast.

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