CN218400208U

CN218400208U - Bilateral independent hydraulic control's walking chassis and agricultural machine

Info

Publication number: CN218400208U
Application number: CN202222495709.6U
Authority: CN
Inventors: 沈昊; 李金泉; 张福祥; 冯涛
Original assignee: Xingguang Agricultural Machine Co Ltd
Current assignee: Xingguang Agricultural Machine Co Ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2023-01-31
Anticipated expiration: 2032-09-21

Abstract

The utility model relates to an agricultural machine technical field, concretely relates to bilateral independent hydraulic control's walking chassis and agricultural machine, two wheel supports side by side about the walking chassis is including, transversely erect two about beam support between the wheel support, the transmission and the connection that two sets of symmetries set up about and about the transmission's walking controller, transmission is including fixing reduction gear on the beam support, connection the hydraulic motor and the connection of reduction gear hydraulic motor's hydraulic pump, walking controller connects the hydraulic pump can adjust two alone hydraulic pump's flow size and flow direction, the reduction gear is used for driving the main wheel rotation. The speed reducer is driven in a full-hydraulic mode, so that the main wheel is driven, the rotating speed and the forward and reverse rotation of the main wheel are regulated through hydraulic pressure, and the speed reducer is only used as a transmission part with a simple structure, so that the controllability is good and the failure rate is low.

Description

Bilateral independent hydraulic control's walking chassis and agricultural machine

Technical Field

The utility model relates to an agricultural machine technical field, concretely relates to bilateral independent hydraulic control's walking chassis and agricultural machine.

Background

The contact area of the crawler belt and the ground is larger than that of the wheels, the unit area is stressed little, so that the vehicle is not easy to sink, the plough bottom layer is not damaged, and the crawler belt has good paddy field walking performance, so that the crawler belt is widely applied to agricultural machinery, such as harvesters, ploughing machines and the like. The hydraulic transmission crawler-type harvester comprises a transmission control system and a hydraulic pump. The hydraulic pump is driven by the engine, oil is sucked from the hydraulic tank, pressure oil is formed and discharged and is sent to the motor for controlling the two crawler wheels to walk, and therefore walking control of the harvester is achieved.

The power system and the rotary cultivator adopting the power system are suitable for a crawler-type rotary cultivator and comprise a power output transmission case, a hydraulic pump, a hydraulic motor and a walking gearbox, wherein the power output transmission case is connected with the walking gearbox through the hydraulic pump and the hydraulic motor, the walking gearbox and the power output transmission case are longitudinally arranged in the center of a rack, and the left gravity center and the right gravity center are balanced. In the patent, the power output transmission case is connected with the walking transmission case through the hydraulic pump and the hydraulic motor, so that the arrangement is convenient and the transmission efficiency is high; however, the wheels of the left driving crawler and the right driving crawler are simultaneously controlled by the walking gearbox in the middle, particularly the control of braking and steering, and the walking gearbox is needed to control, so that the internal structure of the walking gearbox is complex, a jaw clutch and a friction plate brake are usually needed, the friction plate brake is used for stopping transmission to control the wheel brake, and the jaw clutch is disconnected from the transmission connection with the wheel on one side to realize turning; on one hand, the internal structure of the walking gearbox is complex, the controllability is poor, the failure rate is high, on the other hand, when the walking gearbox turns, the wheel on one side needs to stop rotating, the crawler on the other side is dry-ground on the ground, and the abrasion is serious; and the walking gearbox is positioned in the middle position, so that the trafficability of the whole vehicle is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses make the improvement to the problem that above-mentioned prior art exists, promptly the utility model aims to solve the technical problem that a bilateral independent hydraulic control's walking chassis is provided, including controlling two wheel supports side by side, transversely erect about two roof beam support between the wheel support, the transmission and the connection that two sets of symmetries set up about, transmission's walking controller, transmission is including fixing reduction gear, connection on the roof beam support the hydraulic motor and the connection of reduction gear hydraulic motor's hydraulic pump, walking controller connects the hydraulic pump can adjust two alone hydraulic pump's flow size and flow direction, the reduction gear is used for driving the main wheel and rotates.

As the utility model discloses a preferred, hydraulic motor have two with the working oil mouth of hydraulic pump intercommunication, the hydraulic pump can control hydraulic motor corotation, reversal.

As the utility model discloses a preferred, control two the hydraulic pump is established ties each other.

As the utility model discloses a preferred, the reduction gear is wheel reduction gear.

As the utility model discloses a preferred, be provided with interior expanding brake in the reduction gear.

As the utility model discloses a preferred, the beam supports includes the xarm and is located two support arms of bilateral symmetry of xarm below, the xarm is the horizontal setting, the support arm is about horizontal tilt up in the direction setting, and two interval from the top down between the support arm grow gradually, support arm upper end fixed connection the xarm and lower extreme fixed connection the wheel support.

As the utility model discloses a preferred, two the support arm is all in through upper end fixed connection the middle part of xarm, two the mutual fixed connection in upper end of support arm, two the support arm all with the xarm encloses into the contained angle space.

Preferably, the upper portion of the speed reducer is fixedly connected with the cross arm, and the lower portion of the speed reducer is fixedly connected with the supporting arm.

As the utility model discloses a preferably, control two all be provided with in the contained angle space and strengthen the arm, strengthen arm one end fixed connection the xarm and other end fixed connection the support arm.

An agricultural machine comprises the walking chassis.

Has the advantages that:

the transmission device drives the speed reducer in a full hydraulic mode, so that the main wheel is driven, the rotating speed and the forward and reverse rotation of the main wheel are regulated in a hydraulic mode, and the speed reducer is only used as a transmission part with a simple structure, so that the operation and control performance is good, and the failure rate is low; and the running states of the left main wheel and the right main wheel can be independently regulated only by regulating the flow speed and the flow direction of oil in the hydraulic pump through the walking controller, so that the walking chassis can be well and flexibly linearly accelerated, decelerated and turned.

Drawings

FIG. 1 is a schematic general structure diagram of the walking chassis;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a side view of FIG. 1;

FIG. 4 is a schematic view of the internal structure of the decelerator;

FIG. 5 is a schematic view of the beam bracket and the wheel bracket;

in the figure: 1. wheel support, 2, beam support, 21, cross arm, 22, support arm, 23, reinforcing arm, 3, transmission, 31, reducer, 32, hydraulic motor, 33, hydraulic pump, 34, internal expanding brake, 4 and walking controller.

Detailed Description

The following specific embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent laws and protection within the scope of the present invention.

The utility model relates to a bilateral independent hydraulic control's walking chassis, including controlling two wheel supports 1 side by side, transversely erect about two beam supports 2 between the wheel support 1, the transmission 3 and the connection that two sets of symmetries set up about, transmission 3's walking controller 4. In the embodiment, the wheel bracket 1 is used for mounting a small wheel, the small wheel is used for supporting a crawler belt, and the main wheel is driven by the transmission device 3 to rotate and is used for driving the crawler belt to run; the beam bracket 2 is erected and connected between the two wheel brackets 1, and the two wheel brackets 1 are connected together to form a basic framework of the walking chassis for mounting and fixing parts such as a transmission device 3, a walking controller 4 and the like; the left and right sets of transmission devices 3 are respectively arranged on the left and right sides, so that the left and right main wheels can be driven by one set of transmission devices 3 to operate independently, and the independent operation of the left and right tracks of the walking chassis is realized. The transmission device 3 of the present embodiment includes a speed reducer 31 fixed on the beam support 2, a hydraulic motor 32 connected to the speed reducer 31, and a hydraulic pump 33 connected to the hydraulic motor 32, the travel controller 4 is connected to the hydraulic pump 33 and can independently adjust the flow rate and the flow direction of the two hydraulic pumps 33, and the speed reducer 31 is used for driving the main wheels to rotate; the transmission device 3 drives the speed reducer 31 in a full hydraulic mode, so that the main wheel is driven, the rotating speed and the forward and reverse rotation of the main wheel are regulated in a hydraulic mode, and the speed reducer 31 is only used as a transmission part with a simple structure, so that the controllability is good, and the failure rate is low; the running states of the left main wheel and the right main wheel can be independently adjusted only by adjusting the flow speed and the flow direction of oil in the hydraulic pump 33 through the walking controller 4, so that the walking chassis can be well and flexibly linearly decelerated and turned; particularly, when the vehicle turns, the main wheel on one side does not need to stop, the abrasion of the crawler belt is avoided, even the vehicle can turn in situ by rotating the main wheels on the two sides in opposite directions, and the controllability is greatly improved. In addition, the two sets of transmission devices 3 are respectively arranged on the left side and the right side, and a space is arranged between the two transmission devices, namely, an idle space is arranged below the middle part of the beam support 2, so that the beam support is not blocked in the advancing process of the walking chassis, and the avoidance is realized, thereby improving the trafficability of the walking chassis. Of course, it is also necessary to provide a device for supplying power to the hydraulic pump 33, such as an engine, and a tank for supplying oil to the hydraulic pump 33.

In this embodiment, the change of the flowing direction of the oil in the hydraulic pump 33 enables the hydraulic motor 32 to realize forward and reverse rotation, specifically, the hydraulic motor 32 has two working oil ports communicated with the hydraulic pump 33, and when the hydraulic pump 33 drives the oil to flow in from one working oil port of the hydraulic motor 32 and flow out from the other working oil port, the hydraulic motor 32 rotates forward to drive the main wheel to rotate forward; the hydraulic pump 33 drives the hydraulic fluid to flow into the hydraulic motor 32 in a reverse direction, and the hydraulic motor 32 rotates in a reverse direction, thereby rotating the main wheels in a reverse direction. Further improvement, the left hydraulic pump 33 and the right hydraulic pump 33 can be preferably connected in series to form a series pump, so that the synchronism of main wheels on the left side and the right side in the linear advancing process of the walking chassis is improved, and the accuracy of a linear advancing route is improved; but also facilitates the flow regulation of the hydraulic pump 33. In this embodiment, the speed reducer 31 only plays a role in transmission, so the structure is simple, the failure rate is low, the wheel-side speed reducer 31 is preferably adopted, the ground clearance is large, the trafficability characteristic is strong, and the structure is light and light. Since the hydraulic pump 33 adjusts the operation of the hydraulic motor 32 and the controllability is good, but the performance of controlling the brake is general, it is preferable that the retarder 31 is provided with an inner expanding brake 34, and the mechanical structure of the retarder 31 is braked to achieve good braking of the traveling chassis, thereby improving the safety. Of course, the internal expanding brake 34 also needs to be connected with the walking controller 4 and controlled by the walking controller 4.

The walking controller 4 of the present embodiment can be selected from the transmission case of patent No. CN201710197140.6, which has been patented earlier by the applicant. Correspondingly, in this embodiment be provided with the valve of the flow, the velocity of flow and the flow direction of control fluid in the hydraulic pump 33, be provided with the connection outside the hydraulic pump 33 the pump control panel of valve, walking controller 4 with the pump control panel is connected, realizes the regulation to the valve through the rotation that drives the pump control panel to flow, velocity of flow and the flow direction of fluid in the control hydraulic pump 33. Specifically, the walking controller 4 comprises a box body and a transmission system arranged in the box body, wherein one side of the box body is provided with a first input interface used for mounting and connecting a speed change push rod, the other side of the box body is provided with a second input interface used for mounting and connecting a steering wheel operating rod, the top of the box body is provided with two output interfaces, and each output interface corresponds to a pump control panel; the transmission control rotating shaft is arranged in the output interface through a bearing sleeve sleeved outside the middle section of the transmission control rotating shaft, so that the transmission control rotating shaft can rotate in the output interface, one end of the transmission control rotating shaft is provided with a transmission control panel, the other end of the transmission control rotating shaft penetrates through the box body and is connected with the top surface of the end part of the control output panel positioned in the box body, and the movable end of the transmission control panel positioned at the end part of the transmission control rotating shaft is connected to the movable end of the pump control panel through a rigid connecting rod; the bottom surface of another tip of control output board is equipped with one and roughly is columniform first slider for first slider can rotate through control output board drive transmission control pivot, thereby drives the transmission control panel that is located the transmission control pivot other end and uses the transmission control pivot to rotate as the axle center, and then makes through the connecting rod rather than the pump control board of linkage rotate certain angle correspondingly.

In the present embodiment, the beam bracket 2 includes a cross arm 21 and two support arms 22 located below the cross arm 21 and symmetrically left and right, the cross arm 21 is horizontally and horizontally disposed, the support arms 22 are obliquely disposed in the left and right horizontal directions, the distance between the two support arms 22 gradually increases from top to bottom, the upper end of the support arm 22 is fixedly connected to the cross arm 21, and the lower end of the support arm 22 is fixedly connected to the wheel bracket 1. The two supporting arms 22 are of a structure in a shape like a Chinese character 'ba', the structural stability is high, the cross arm 21 is stably supported, a space is formed between the two supporting arms 22, obstacles can be avoided in the advancing process of the walking chassis, and the trafficability of the walking chassis is improved. In a further improvement, preferably, the two support arms 22 are both fixedly connected to the middle of the cross arm 21 through upper ends, the upper ends of the two support arms 22 are mutually fixedly connected, and the two support arms 22 and the cross arm 21 enclose an included angle space, so that a triangular stable structure is formed between the support arms 22 and between the support arms 22 and the cross arm 21, and the structural stability of the beam support 2 is further improved, thereby ensuring stable support of the transmission device 3. Further, preferably, reduction gear 31 upper portion fixed connection the xarm 21 and lower part fixed connection support arm 22, two reduction gears 31 are listed as in the left and right sides branch, realize the fixed connection of upper and lower two parts respectively on roof beam support 2, improve the installation steadiness of reduction gear 31 on roof beam support 2, make the interval between two reduction gears 31 great moreover, form and dodge the space, guarantee trafficability characteristic, make reduction gear 31 be closer to the main wheel of the left and right sides moreover, be convenient for exert the advantage of wheel reduction gear 31 more. In a further improvement, preferably, reinforcing arms 23 are disposed in the two right and left included angle spaces, one end of each reinforcing arm 23 is fixedly connected to the cross arm 21, and the other end of each reinforcing arm 23 is fixedly connected to the supporting arm 22, so that the structural strength and the stability of the beam support 2 are further improved.

The utility model relates to an agricultural machine, include walking chassis, the trafficability characteristic when the operation in the field is strong, and the nature controlled is good, and the turning performance is good, specifically can be used as various agricultural machines such as rotary cultivator, transplanter, harvester.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a bilateral independent hydraulic control's walking chassis, its characterized in that, including about two wheel supports (1) side by side, transversely erect about two roof beam support (2) between wheel support (1), two sets of transmission (3) and connection that the left and right sides symmetry set up transmission (3) walking controller (4) of transmission (3), transmission (3) are including fixing reduction gear (31) on roof beam support (2), connection hydraulic motor (32) and the connection of reduction gear (31) hydraulic pump (33) of hydraulic motor (32), walking controller (4) are connected hydraulic pump (33) and can adjust two alone the flow size and the flow direction of hydraulic pump (33), reduction gear (31) are used for driving the main wheel rotation.

2. A bilateral individually hydraulically controlled walking chassis according to claim 1, characterized in that the hydraulic motor (32) has two working ports communicating with the hydraulic pump (33), and the hydraulic pump (33) is capable of controlling the hydraulic motor (32) to rotate forward and backward.

3. A bilateral individually hydraulically controlled walking chassis according to claim 2, characterized in that the left and right hydraulic pumps (33) are connected in series with each other.

4. A double sided individually hydraulically controlled walking chassis according to claim 1, characterized in that the retarder (31) is a wheel retarder.

5. A bilateral individually hydraulically controlled walking chassis according to claim 4, characterized in that an internally expanding brake (34) is provided in the retarder (31).

6. A bilateral individually hydraulically controlled walking chassis according to claim 1, characterized in that said beam support (2) comprises a cross arm (21) and two support arms (22) under said cross arm (21) and symmetrically arranged in left and right directions, said cross arm (21) is horizontally and transversely arranged, said support arms (22) are obliquely arranged in left and right transverse directions, the distance between two support arms (22) is gradually increased from top to bottom, the upper end of said support arm (22) is fixedly connected with said cross arm (21) and the lower end is fixedly connected with said wheel support (1).

7. A bilateral individually hydraulically controlled walking chassis according to claim 6 characterized in that both said support arms (22) are fixedly connected to the middle of said cross arm (21) by upper ends, the upper ends of both said support arms (22) are fixedly connected to each other, and both said support arms (22) and said cross arm (21) enclose an included angle space.

8. A bilateral individually hydraulically controlled walking chassis according to claim 7 characterized in that said reducer (31) is fixedly connected to said cross arm (21) at the upper part and to said support arm (22) at the lower part.

9. A bilateral individually hydraulically controlled walking chassis according to claim 8 characterized in that a reinforcing arm (23) is provided in both the left and right said angle spaces, said reinforcing arm (23) being fixedly connected to said cross arm (21) at one end and to said support arm (22) at the other end.

10. An agricultural machine comprising a walking chassis according to any one of claims 1 to 9.