A rear-drive agricultural management machine

Abstract

This utility model discloses a rear-drive agricultural management machine. The rear-drive agricultural management machine includes a frame, a steering mechanism mounted on the frame, and a hydraulic steering unit mounted on the steering mechanism. The frame has a pair of front wheels and a pair of rear wheels. Each rear wheel includes a ball joint and a tire fitted onto the ball joint. A hydraulic steering cylinder assembly is mounted on the ball joint and is connected to it via a first oil pipe and a second oil pipe. By providing a hydraulic steering unit on the steering mechanism, during steering, after receiving a mechanical steering signal from the steering mechanism, the hydraulic steering unit converts the received mechanical steering signal into a hydraulic steering signal. This allows control of the extension and retraction of the hydraulic steering cylinder assembly, which in turn rotates the rear wheels, thus achieving steering of the ride-on agricultural management machine and improving steering flexibility.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, specifically relating to a rear-drive agricultural management machine. Background Technology

[0002] In recent years, with the continuous development of technology, agricultural machinery of various structures has been used more and more widely in agricultural production activities.

[0003] Agricultural tillers are widely applicable to dry land, paddy fields, and orchards in plains, mountains, and hills. Existing agricultural tillers are broadly divided into two categories: two-wheel drive and four-wheel drive. Two-wheel drive riding-type agricultural tillers have lighter plowing force and shallower plowing depth, and the user must firmly grip the handles, relying entirely on manual steering. This results in excessive physical exertion and fatigue for the user during daily operation. Four-wheel drive agricultural tillers differ from two-wheel drive ones in that they have four wheels aligned and driven, offering better stability. However, the need for manual steering remains a major challenge. Four-wheel drive requires significantly more human effort than two-wheel drive agricultural tillers, limiting their usability and requiring strong users to operate.

[0004] In conclusion, how to provide an agricultural management machine that is easy to operate and saves labor has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a rear-drive agricultural management machine, which aims to solve the technical problem of the difficulty in steering existing ride-on agricultural management machines.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rear-drive agricultural management machine, comprising:

[0007] A frame, on which a pair of front wheels and a pair of rear wheels are provided, each of the rear wheels including a ball cage and a tire fitted on the ball cage;

[0008] A steering mechanism, mounted on the frame, is used to control the steering of the ride-on agricultural management machine;

[0009] A hydraulic steering gear, mounted on the steering mechanism, is used to acquire steering signals from the steering mechanism;

[0010] A hydraulic steering cylinder assembly for connection with the pair of said ball cage drives;

[0011] The hydraulic steering gear is connected to the hydraulic steering cylinder assembly via a first oil pipe and a second oil pipe.

[0012] Furthermore, the hydraulic steering cylinder assembly includes a hydraulic steering cylinder and a connecting plate assembly disposed at both ends of the hydraulic steering cylinder and connected to the ball joint. One end of the first oil pipe and the second oil pipe are connected to the hydraulic steering gear respectively, and the other end of the first oil pipe and the second oil pipe are connected to the hydraulic steering cylinder.

[0013] Furthermore, the connecting plate assembly includes a pair of connecting plates arranged at intervals, one end of the hydraulic steering cylinder is inserted into the gap between the pair of connecting plates, one end of the hydraulic steering cylinder is hinged to the pair of connecting plates via a first pin, and the other end of the pair of connecting plates is provided with a transition plate for connection to the ball cage.

[0014] Furthermore, the transition plate includes a steering arm and a fixed plate integrally formed with the fixed block and connected to the ball cage, wherein the steering arm is connected to a pair of connecting plates via a second pin.

[0015] Furthermore, the steering mechanism includes a steering column rotatably mounted on the frame, a steering wheel mounted on the steering column, and a hydraulic pump mounted on the frame. The hydraulic steering gear is mounted on the steering column, and the hydraulic pump is connected to the hydraulic steering gear.

[0016] Furthermore, the hydraulic steering gear includes channel A, channel B, channel C, and channel D. Channel A is connected to the hydraulic steering cylinder via a first oil pipe, channel B is connected to the hydraulic steering cylinder via a second oil pipe, channel C is connected to the hydraulic pump via a third oil pipe, and channel D is connected to the hydraulic pump via a fourth oil pipe.

[0017] Furthermore, the frame is also provided with a housing for positioning the steering column, and the housing has a through hole for inserting the steering column.

[0018] Furthermore, the rear side of the frame is also provided with a connector for connecting to external machinery.

[0019] The beneficial effects of this utility model are as follows: Compared with the prior art, the rear-drive agricultural management machine of this utility model can control the steering of the ride-on agricultural management machine by setting a steering mechanism on the frame; by setting a hydraulic steering device on the steering mechanism, the hydraulic steering device converts the mechanical steering signal received by the steering mechanism into a hydraulic steering signal during the steering process. This allows the hydraulic steering cylinder assembly to extend and retract, and the extension and retraction of the hydraulic steering cylinder assembly drives the rear wheels to rotate, thereby realizing the steering of the ride-on agricultural management machine. This greatly reduces the physical exertion of the operator and improves the flexibility and convenience of steering.

[0020] Other advantages, objectives, and features of this invention will be set forth in the following description and will be apparent to those skilled in the art to some extent, or may be learned by practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0021] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0022] Figure 1 This is a schematic diagram of the structure of a rear-drive agricultural management machine according to an embodiment of the present invention;

[0023] Figure 2 This invention is proposed as an embodiment of the present invention. Figure 1 Enlarged view of A in the middle;

[0024] Figure 3 This is a partial structural schematic diagram of a rear-drive agricultural management machine according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of a hydraulic steering cylinder assembly according to an embodiment of the present invention.

[0026] Icon labels:

[0027] 1- Frame; 11- Front travel wheel; 12- Rear travel wheel; 121- Ball cage; 122- Tire; 13- Connecting component;

[0028] 2- Steering mechanism; 21- Steering column; 22- Steering wheel; 23- Hydraulic pump;

[0029] 3- Hydraulic steering gear; 31- Channel A; 32- Channel B; 33- Channel C; 34- Channel D;

[0030] 4- Hydraulic steering cylinder assembly; 41- Hydraulic steering cylinder; 42- Connecting plate assembly; 421- Connecting plate; 422- First pin; 423- Transition plate; 4231- Steering arm; 4232- Fixing plate; 424- Second pin;

[0031] 5- First oil pipe;

[0032] 6- Second oil pipe;

[0033] 7-Third oil pipe;

[0034] 8-Fourth oil pipe;

[0035] 9-Shell. Detailed Implementation

[0036] like Figures 1 to 4 As shown, this embodiment proposes a rear-drive agricultural management machine, including a frame 1. The frame 1 is provided with a pair of front wheels 11 and a pair of rear wheels 12. The rear wheels 12 include a ball cage 121 and a tire 122. The tire 122 is fitted on the ball cage 121. The frame 1 is provided with a steering mechanism 2, which can be used to control the steering of the ride-on agricultural management machine. In addition, the ride-on agricultural management machine also includes a hydraulic steering cylinder assembly 4 and a hydraulic steering device 3. The hydraulic steering cylinder assembly 4 is connected to the ball cage 121 of the pair of rear wheels 12. The hydraulic steering device 3 is connected to the hydraulic steering cylinder assembly 4 through a first oil pipe 5 and a second oil pipe 6.

[0037] Thus, by equipping the steering mechanism 2 with a hydraulic steering device 3, during the steering process, after receiving a mechanical steering signal command, the hydraulic steering device 3 converts the received mechanical steering signal into a hydraulic steering signal. This allows the hydraulic steering cylinder assembly 4 to extend and retract, and the extension and retraction of the hydraulic steering cylinder assembly 4 drives the ball cages of a pair of rear walking wheels 12 to rotate, thereby realizing the steering of the ride-on agricultural management machine. This greatly reduces the physical exertion of the operator and improves the flexibility and convenience of steering.

[0038] Further, please refer to Figure 3 and Figure 4 As shown, the hydraulic steering cylinder assembly 4 includes a hydraulic steering cylinder 41 and a connecting plate assembly 42. The connecting plate assembly 42 is disposed at both ends of the hydraulic steering cylinder and is connected to the ball cage. One end of the first oil pipe 5 and the second oil pipe 6 are respectively connected to the hydraulic steering gear 3, and the other end of the first oil pipe 5 and the second oil pipe 6 are connected to the hydraulic steering cylinder 41. Thus, after receiving a steering signal command, the hydraulic steering gear 3 controls the flow of oil in the first oil pipe 5 and the second oil pipe 6, causing the hydraulic steering cylinder 41 to extend or retract. When the hydraulic steering cylinder 41 extends, it pushes the connecting plate assembly 42 and the connected ball cage 121 to rotate, thereby driving the rear wheels 12 to rotate, realizing the steering of the ride-on agricultural management machine; conversely, when the hydraulic steering cylinder 41 retracts, the connecting plate assembly 42 pulls the ball cage 121 to rotate in the opposite direction, also realizing the steering operation.

[0039] Further, please refer to Figure 4As shown, the connecting plate assembly 42 includes a pair of connecting plates 421 arranged at intervals. One end of the hydraulic steering cylinder 41 is inserted into the gap between the pair of connecting plates 421. One end of the hydraulic steering cylinder 41 is hinged to the pair of connecting plates 421 via a first pin 422. The other end of the pair of connecting plates 421 is provided with a transition plate 423 connected to the ball cage 121. In this way, by inserting one end of the hydraulic steering cylinder 41 into the gap between the pair of connecting plates 421, the structure is more compact and the space occupied is reduced. By extending or shortening the hydraulic steering cylinder 41, the hydraulic steering cylinder 41 drives the pair of connecting plates 421 to move. The connecting rod 421 drives the ball cage 121 to rotate via the transition plate 423, thereby realizing the steering of the ride-on agricultural management machine.

[0040] Further, please refer to Figure 4 As shown, the transition plate 423 includes a steering arm 4231 and a fixed plate 4232. The steering arm 4231 and the fixed plate 4232 are integrally formed. The fixed plate 4232 is connected to the ball cage 121. The steering arm 4231 is connected to a pair of connecting plates 421 via a second pin 424. This structure makes steering smoother and can withstand larger steering torques.

[0041] Further, please refer to Figure 1 and Figure 3 As shown, the steering mechanism 2 includes a steering column 21 mounted on a frame 1. A steering wheel 22 is mounted on the steering column 21. A hydraulic pump 23 is installed on the frame 1. A hydraulic steering gear 3 is mounted on the steering column 21, and the hydraulic pump 23 is connected to the hydraulic steering gear 3. Thus, by operating the steering wheel 22, the steering column 21 can be rotated, thereby converting the mechanical steering signal into a hydraulic steering signal through the hydraulic steering gear 3. The hydraulic pump 23 provides the necessary hydraulic power to ensure the normal operation of the hydraulic steering gear 3.

[0042] Preferably, please refer to Figure 2 As shown, the hydraulic steering gear 3 includes channel A 31, channel B 32, channel C 33, and channel D 34. Specifically, channel A 31 is connected to the hydraulic steering cylinder 41 via a first oil pipe 5; channel B 32 is connected to the hydraulic steering cylinder 41 via a second oil pipe 6; channel C 33 is connected to the hydraulic pump 23 via a third oil pipe 7; and channel D 34 is connected to the hydraulic pump 23 via a fourth oil pipe 8. Thus, the hydraulic pump 23, the hydraulic steering gear 3, and the hydraulic steering cylinder 41 are connected via channels A 31, B 32, C 33, and D 34 to achieve hydraulic system circulation and control. This design allows the hydraulic steering gear 3 to precisely control the extension and retraction of the hydraulic steering cylinder 41, thereby achieving accurate steering operation.

[0043] In this application, when the steering wheel 22 is turned to the left, the hydraulic steering unit 3 receives the steering signal and pumps the hydraulic oil from the hydraulic pump 23 into the hydraulic steering cylinder 41 in the direction of A channel 31—first oil pipe 5—second oil pipe 6—B channel 32. The oil pressure pushes the left end of the hydraulic steering cylinder 41 to extend and the right end to retract, thereby pushing the ball cages 121 of the pair of rear wheels 12 to rotate synchronously to the left, realizing the left turn of the agricultural management machine. When the steering wheel 22 is turned to the right, the hydraulic steering unit 3 receives the steering signal and pumps the hydraulic oil from the hydraulic pump 23 into the hydraulic steering cylinder 41 in the direction of B channel 32—second oil pipe 6—first oil pipe 5—A channel 31. The oil pressure pushes the right end of the hydraulic steering cylinder 41 to extend and the left end to retract, thereby pushing the ball cages 121 of the pair of rear wheels 12 to rotate synchronously to the right, realizing the right turn of the agricultural management machine.

[0044] Further, please refer to Figure 2 As shown, the frame 1 is also equipped with a housing 9, which is used to position the steering column 21. The housing 9 has a through hole for the steering column 21 to be inserted. This allows the steering column 21 to be stably installed on the frame 1 and facilitates steering operations. In addition, the design of the housing 9 also provides a certain degree of protection, preventing the steering column from being affected by external interference or damage.

[0045] For further information, please refer to [link / reference]. Figure 1 As shown, a connector 13 is also provided on the rear side of the frame 1, which can be connected to external implements. Thus, by providing the connector 13, it can be used with rotary tillers, ditchers, weeders, fertilizer applicators, and other implements to perform various operations in fields, orchards, greenhouses, and other environments, further improving the practicality and versatility of the agricultural management machine. When using it, the operator can select and connect appropriate implements according to actual needs, easily handling various complex operating environments and improving operational efficiency and flexibility.

[0046] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A rear drive type agricultural management machine, characterized by, include: A frame, on which a pair of front wheels and a pair of rear wheels are provided, each of the rear wheels including a ball cage and a tire fitted on the ball cage; A steering mechanism, mounted on the frame, is used to control the steering of the ride-on agricultural management machine; A hydraulic steering gear, mounted on the steering mechanism, is used to acquire steering signals from the steering mechanism; A hydraulic steering cylinder assembly for connection with the pair of said ball cage drives; The hydraulic steering gear is connected to the hydraulic steering cylinder assembly via a first oil pipe and a second oil pipe.

2. The rear drive agricultural management machine of claim 1, wherein, The hydraulic steering cylinder assembly includes a hydraulic steering cylinder and a connecting plate assembly disposed at both ends of the hydraulic steering cylinder and connected to the ball cage. One end of the first oil pipe and the second oil pipe are connected to the hydraulic steering gear respectively, and the other end of the first oil pipe and the second oil pipe are connected to the hydraulic steering cylinder.

3. The rear drive agricultural management machine of claim 2, wherein, The connecting plate assembly includes a pair of connecting plates arranged at intervals. One end of the hydraulic steering cylinder is inserted into the gap between the pair of connecting plates. One end of the hydraulic steering cylinder is hinged to the pair of connecting plates via a first pin. The other end of the pair of connecting plates is provided with a transition plate for connection to the ball cage.

4. The rear drive agricultural management machine of claim 3, wherein, The transition plate includes a steering arm and a fixed plate integrally formed with the steering arm and connected to the ball cage. The steering arm is connected to a pair of connecting plates via a second pin.

5. The rear drive agricultural management machine of claim 3, wherein, The steering mechanism includes a steering column rotatably mounted on the frame, a steering wheel mounted on the steering column, and a hydraulic pump mounted on the frame. The hydraulic steering gear is mounted on the steering column, and the hydraulic pump is connected to the hydraulic steering gear.

6. The rear drive agricultural management machine of claim 5, wherein, The hydraulic steering system includes channels A, B, C, and D. Channel A is connected to the hydraulic steering cylinder via a first oil pipe, channel B is connected to the hydraulic steering cylinder via a second oil pipe, channel C is connected to the hydraulic pump via a third oil pipe, and channel D is connected to the hydraulic pump via a fourth oil pipe.

7. The rear drive agricultural management machine of claim 5, wherein, The frame is also provided with a housing for positioning the steering column, and the housing has a through hole for inserting the steering column.

8. The rear drive agricultural management machine of claim 5, wherein, The rear side of the frame is also provided with a connector for connecting to external machinery.

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