阅读说明：本技术 一种适用于农用车的手动遥控两用变速箱及其操控方法 (manual and remote control dual-purpose gearbox applicable to agricultural vehicle and control method thereof ) 是由 张园 邓怡国 王业勤 李江炎 陈沛民 燕波 于 2019-11-18 设计创作，主要内容包括：本发明提供一种适用于农用车的手动遥控两用变速箱及其操控方法,该变速箱中,X轴执行机构、Y轴执行机构具有供速度档位拉杆完成换档动作的矩形内腔,第一X轴自回位液压缸的液压杆与X轴执行机构连接,X轴自回位液压缸通过X轴执行机构控制速度档位拉杆在X轴上摆动,第一Y轴自回位液压缸通过Y轴执行机构控制速度档位拉杆在Y轴上摆动,当X轴执行机构、Y轴执行机构位于起始位置时,速度档位拉杆可在手动控制下完成换挡动作。本发明可适用于农用车,尤其是适用于山地丘陵地形作业的履带式农用车手动操作和遥控操作的无缝衔接,有效解决了现有遥控农用车不能进行手动和遥控交叉操作的弊端。(The invention provides manual and remote control dual-purpose gear boxes suitable for agricultural vehicles and an operation method thereof, wherein an X-axis actuating mechanism and a Y-axis actuating mechanism are provided with rectangular inner cavities for a speed gear pull rod to complete gear shifting, a X-axis self-return hydraulic cylinder is connected with the X-axis actuating mechanism, the X-axis self-return hydraulic cylinder controls the speed gear pull rod to swing on an X axis through the X-axis actuating mechanism, a Y-axis self-return hydraulic cylinder controls the speed gear pull rod to swing on a Y axis through the Y-axis actuating mechanism, and when the X-axis actuating mechanism and the Y-axis actuating mechanism are positioned at initial positions, the speed gear pull rod can complete gear shifting under manual control.)

The utility model provides an manual remote control dual-purpose gearbox suitable for agricultural vehicle, its characterized in that includes box (12), be equipped with speed gear pull rod (6), X axle from return pneumatic cylinder (51), second X axle from return pneumatic cylinder (52), X axle actuating mechanism (21), Y axle from return pneumatic cylinder (71), second Y axle from return pneumatic cylinder (72), Y axle actuating mechanism (22) on box (12), X axle actuating mechanism (21), Y axle actuating mechanism (22) have the confession speed gear pull rod (6) accomplish the rectangle inner chamber of gear shifting action, X axle from the hydraulic stem of return pneumatic cylinder (51) with X axle actuating mechanism connects, X axle from return pneumatic cylinder (51) pass through X axle actuating mechanism (21) control speed gear pull rod (6) swing on the X axle, Y axle from return pneumatic cylinder (71) pass through Y axle actuating mechanism (22) control speed gear pull rod (6) are on the Y axle, swing actuating mechanism (21), when Y axle actuating mechanism (21), the initial speed gear pull rod (21) can accomplish when the actuating mechanism (22), the actuating mechanism is in the time shift action.

2. The gearbox as claimed in claim 1, characterized in that a guide support frame (19) for supporting the X-axis self-return hydraulic cylinder (51), the second X-axis self-return hydraulic cylinder (52), the Y-axis self-return hydraulic cylinder (71) and the second Y-axis self-return hydraulic cylinder (72) is arranged on the box body (12).

3. The gearbox according to claim 1, characterized in that a clutch limit (3), a clutch release (10) and a hinge shaft (24) are arranged on the box body (12), a clutch rod (23) is hinged on the hinge shaft (24), a connecting rod (25) is connected to the lower portion of the clutch rod (23), the connecting rod (25) is connected to the clutch release (10), the clutch limit (3) is located on the side of the clutch rod (23) departing from the clutch release (10), and when the clutch rod (23) is pushed towards the clutch release (10), the clutch release (10) is released.

4. A gearbox according to claim 3, characterised in that: the lower end of the clutch rod (23) is connected with a self-return hydraulic cylinder which can drive the clutch rod (23) to rotate clockwise.

5. The gearbox according to claim 1, characterized in that a steering tie rod (1) is arranged on the box body (12), the steering tie rod (1) comprises a vertical rod (101) and a shifting fork (28) connected to the lower end of the vertical rod (101), the shifting fork (28) is provided with a right fork arm (281) and a left fork arm (282), a lantern ring (29) is independently arranged on the right fork arm (281) and the left fork arm (282), the vertical rod (101) is hinged on the box body (12), a right steering operation connecting rod (26) and a left steering operation connecting rod (27) are respectively arranged in the lantern ring (29) of the right fork arm (281) and the left fork arm (282) in a penetrating manner, the end of the right steering operation connecting rod (26) is hinged to the right end of the right steering tie rod (14), the other end of the right steering operation connecting rod (26) penetrates through the lantern ring (29) and is provided with a stop member (30) positioned outside the lantern ring (29), the end of the left steering operation connecting rod (27) is connected to the left steering tie rod (15), the left steering tie rod (29) and the left steering tie rod (27) and the left tie rod (29) is provided with a separate member (20) and the left steering tie rod (13).

6. The transmission of claim 4, wherein: the box body (12) is further provided with a right steering hydraulic cylinder (16) capable of controlling the right steering separator (13) to separate and a left steering hydraulic cylinder (17) capable of controlling the left steering separator (20) to separate, a hydraulic rod of the right steering hydraulic cylinder (16) is connected to the right end of the right steering pull rod (14), and a hydraulic rod of the left steering hydraulic cylinder (17) is connected to the left end of the left steering pull rod (15).

7. The transmission of claim 1, wherein: the box body (12) is also provided with a high-low gear pull operating rod (4).

8. The transmission of claim 1, wherein: the box body (12) is also provided with a power output switching pull rod (9) and a power output gear (18).

9. The transmission of claim 1, wherein: the box body (12) is connected to an engine through a belt pulley (11), and an oil filling device (8) for filling lubricating oil is arranged on the box body (12).

10. The control method of the gearbox according to any one of claims 1 to 9 to is characterized by comprising the steps of manually operating a speed gear pull rod (6) when manual operation is needed, enabling the speed gear pull rod (6) to finish gear shifting actions in rectangular inner cavities of the X-axis actuating mechanism (21) and the Y-axis actuating mechanism (22), enabling a control system to drive the X-axis actuating mechanism (21) to move in the X direction and further drive the speed gear pull rod (6) to move in the X direction by controlling the X-axis self-return hydraulic cylinder (51) or the second X-axis self-return hydraulic cylinder (52) when automatic operation is needed, enabling the control system to drive the Y-axis actuating mechanism (22) to move in the Y direction by controlling the Y-axis self-return hydraulic cylinder (71) or the second Y-axis self-return hydraulic cylinder (72) to drive the Y-axis actuating mechanism (22) to move in the Y direction, and further drive the speed gear pull rod (6) to move in the Y direction, and enabling the X-axis actuating mechanism (21) to return to the Y-axis self-return hydraulic cylinder (51) from the initial position of the X-return hydraulic cylinder (51) and the second Y-return hydraulic cylinder (72) to the initial position after the gear shifting actions are finished.

Technical Field

The invention relates to the field of agricultural machinery, in particular to manual and remote control dual-purpose gearboxes suitable for agricultural vehicles and an operation method thereof.

Background

Economic crops such as natural rubber, cassava, bananas and the like in tropical and subtropical regions of China are usually planted on mountainous regions, hills or slopes with large surface fluctuation, and ordinary large-scale agricultural machinery cannot be used for carrying out operation, so that research and development workers develop small-sized low-chassis tractors, crawler-type tractors, self-propelled transportation platforms and other agricultural machinery suitable for operation in mountainous regions, hills and gentle slopes according to the current situation of , and two modes of manual control and remote control operation are generally formed.

The agricultural machinery is influenced by factors such as terrain, high temperature and heavy rainfall in tropical and subtropical regions during operation, and after the surface covering grows, the agricultural machinery cannot identify the field and the open ground frequently, so that safety accidents are frequent, and the agricultural machinery is damaged by broken stones frequently.

In order to avoid the problems, most small agricultural machines move to a remote control operation mode, so that man-machine separation can be effectively carried out, and the injury to operators is avoided. However, the following two problems still exist: 1. the remote control system is easy to fail in the face of complex agricultural operation environment, so that the agricultural machine cannot be moved on the ground and timely maintenance is carried out; 2. can realize remote control and manually operation's agricultural machinery, because do not have from return mechanism and supply the free space of action bars activity, when all having remote control operation, manually operation device can interfere, can't cross control, when having the ground trouble, leads to the agricultural machinery to move and carry out timely maintenance scheduling problem at the ground equally easily.

Disclosure of Invention

The invention provides gear boxes, which can realize seamless connection of manual operation and remote operation of an agricultural vehicle, in particular to a crawler-type agricultural vehicle suitable for mountain and hilly terrain operation, and effectively overcome the defect that the conventional remote control agricultural vehicle cannot carry out manual and remote control cross operation.

The above purpose of the invention is realized by the following technical scheme:

the invention provides a gearbox capable of being manually remotely controlled and operated in two ways, which comprises a box body, wherein a speed gear pull rod, a X-axis self-return hydraulic cylinder, a second X-axis self-return hydraulic cylinder, an X-axis executing mechanism, a Y-axis self-return hydraulic cylinder, a second Y-axis self-return hydraulic cylinder and a Y-axis executing mechanism are arranged on the box body, the X-axis executing mechanism and the Y-axis executing mechanism are provided with rectangular inner cavities for the speed gear pull rod to complete gear shifting, a hydraulic rod of the X-axis self-return hydraulic cylinder is connected with the X-axis executing mechanism, the X-axis self-return hydraulic cylinder controls the speed gear pull rod to swing on the X-axis through the X-axis executing mechanism, the Y-axis self-return hydraulic cylinder controls the speed gear pull rod to swing on the Y-axis through the Y-axis executing mechanism, and when the X-axis executing mechanism and the Y-axis executing mechanism are located at initial positions, the speed gear pull rod can complete gear shifting under.

In embodiments, the box body is provided with a guiding support frame for supporting the X-axis self-return hydraulic cylinder, the second X-axis self-return hydraulic cylinder, the Y-axis self-return hydraulic cylinder, and the second Y-axis self-return hydraulic cylinder.

In some embodiments, be equipped with spacing, the separation and reunion ware, articulated shaft on the box, it has the clutch lever to articulate on the articulated shaft, the sub-unit connection of clutch lever has the connecting rod, the connecting rod is connected to the separation and reunion ware, the spacing position of separation and reunion is in the clutch lever deviates from the side of separation and reunion ware, when the orientation separation and reunion ware promotes during the clutch lever, the separation and reunion ware separates.

In , a self-return hydraulic cylinder is connected to the lower end of the clutch lever to drive the clutch lever to rotate clockwise.

In embodiments, be equipped with the tie rod on the box, the tie rod includes the montant and connects the fork of pulling out at the montant lower extreme, it has right yoke, left yoke to pull out the fork, all be equipped with the lantern ring on right yoke, the left yoke independently, the montant articulates on the box, wear to be equipped with right steering operation connecting rod, left steering operation connecting rod in the lantern ring of right yoke, left yoke respectively, the end of right steering operation connecting rod articulates the right-hand member to the right steering rod, the other end of right steering operation connecting rod passes the lantern ring and is equipped with and is located the position stopping piece in the lantern ring outside, the end of left steering operation connecting rod articulates the left end of left steering rod, the other end of left steering operation connecting rod passes the lantern ring and is equipped with and is located the position stopping piece in the lantern ring outside, the left end of right steering rod, the right-hand member of left steering rod are independently connected to right steering separator, left steering separator respectively.

In , the box body is further provided with a right steering hydraulic cylinder capable of controlling the right steering separator to separate, and a left steering hydraulic cylinder capable of controlling the left steering separator to separate, a hydraulic rod of the right steering hydraulic cylinder is connected to the right end of the right steering linkage, and a hydraulic rod of the left steering hydraulic cylinder is connected to the left end of the left steering linkage.

In , the box body is also provided with a high-low gear pull operating rod.

In , the case is further provided with a power output switching pull rod and a power output gear.

In , the tank is connected to the engine via a pulley, and the tank is provided with an oil filling device for filling lubricating oil.

The invention also provides an operation method of the gearbox, which comprises the steps of manually operating a speed gear pull rod when manual operation is needed, wherein the speed gear pull rod completes gear shifting actions in rectangular inner cavities of the X-axis executing mechanism and the Y-axis executing mechanism, when automatic operation is needed, controlling the X-axis self-return hydraulic cylinder or the second X-axis self-return hydraulic cylinder to move to drive the X-axis executing mechanism to move in the X direction so as to drive the speed gear pull rod to move in the X direction, controlling the Y-axis self-return hydraulic cylinder or the second Y-axis self-return hydraulic cylinder to move to drive the Y-axis executing mechanism to move in the Y direction so as to drive the speed gear pull rod to move in the Y direction, after the gear shifting actions are completed, returning the X-axis executing mechanism to the initial position under the self-return action of the X-axis self-return hydraulic cylinder and the second X-axis self-return hydraulic cylinder, and returning the Y-axis executing mechanism to the initial position under the self-return action of the Y-axis self-return hydraulic cylinder and the second Y-return hydraulic cylinder.

The invention has the following beneficial effects:

the invention is suitable for the agricultural vehicle, especially for the seamless connection of manual operation and remote control operation of the crawler-type agricultural vehicle for mountain and hill terrain operation, by designing the X-axis actuating mechanism and the Y-axis actuating mechanism which are provided with the rectangular inner cavities for the speed gear pull rods to complete the gear shifting action and matching with the self-return hydraulic cylinder, after the automatic control system completes the switching operation, the operating rod automatically returns under the action of the self-return hydraulic cylinder, thereby effectively solving the defect that the existing remote control agricultural vehicle can not perform manual and remote control cross operation.

Drawings

Fig. 1 is a front view of a transmission according to an embodiment of the present invention.

Fig. 2 is shown as a left side view of fig. 1.

Fig. 3 is a top view of fig. 1.

Fig. 4 is a schematic diagram of an X-axis actuator and a Y-axis actuator according to an embodiment of the invention.

FIG. 5 is a schematic diagram of a Y-axis actuator according to an embodiment of the invention.

Fig. 6 is a schematic operation diagram of the X-axis hydraulic cylinder according to the embodiment of the present invention.

Fig. 7 is a schematic diagram of 1-gear manual/automatic switching according to an embodiment of the present invention.

Fig. 8 is a schematic diagram showing the switching of 1 st gear, 2 nd gear, 3 rd gear and reverse gear according to the embodiment of the present invention.

FIG. 9 shows a schematic diagram of a gearbox according to an embodiment of the present invention.

Description of reference numerals:

1-steering linkage

2-Clutch pull rod

3-separation and reunion spacing

4-high-low gear pull rod

Self-return hydraulic cylinder for 51- X-axis

52-second X-axis self-return hydraulic cylinder

6-speed gear pull rod

71- Y-axis self-return hydraulic cylinder

72-second Y-axis self-return hydraulic cylinder

8-oiling device

9-power output switching pull rod

10-Clutch separator

11-input pulley

12-case

13-Right steering separator

14-Right steering pull rod

15-left steering tie rod

16-right steering hydraulic cylinder

17-left steering hydraulic cylinder

18-power output gear

19-guiding support frame

20-left steering separator

21-X axis actuating mechanism

22-Y-axis actuating mechanism

23-Clutch lever

24-articulated shaft

25-connecting rod

26-connecting rod

27-left steering operation connecting rod

28-shifting fork

281-right fork arm

282-left yoke

29-Collar

30-stop member

Detailed Description

The invention is further illustrated in the following description with reference to the figures and the examples, which are not intended to limit the invention in any way.

As shown in fig. 1-8, gearboxes capable of being operated by both manual and remote control comprise a box body, a clutch mechanism, a steering mechanism, a high-low gear mechanism, a speed gear mechanism and an output mechanism, wherein a speed gear pull rod 6, a X-axis self-return hydraulic cylinder 51, a second X-axis self-return hydraulic cylinder 52, an X-axis actuator 21, a Y-axis self-return hydraulic cylinder 71, a second Y-axis self-return hydraulic cylinder 72 and a Y-axis actuator 22 are arranged on the box body 12, the X-axis actuator 21 and the Y-axis actuator 22 are provided with rectangular inner cavities for completing gear shifting actions of the speed gear pull rod 6, a hydraulic rod of the X-axis self-return hydraulic cylinder 51 is connected with the X-axis actuator, the X-axis self-return hydraulic cylinder 51 and the second X-axis self-return hydraulic cylinder 52 control the speed gear pull rod 6 to swing on the X-axis through the X-axis actuator 21, the Y-axis self-return hydraulic cylinder 71 and the second Y-axis self-return hydraulic cylinder 72 control the speed gear pull rod 6 to swing on the Y-axis through the Y-axis actuator 22, and when the X-axis actuator 21 and the Y-axis actuator 22 and the speed.

In , the X-axis self-returning hydraulic cylinder 51 and the second X-axis self-returning hydraulic cylinder 52 are located on two opposite sides of the X-axis actuator 21 on the X axis, specifically, the hydraulic rod of the second X-axis self-returning hydraulic cylinder 52 and the X-axis self-returning hydraulic cylinder 51 may be located on the same plane and opposite to each other, and the X-axis self-returning hydraulic cylinder 51 and the second X-axis self-returning hydraulic cylinder 52 are located on two sides of the X-axis actuator 21, respectively.

In , the Y-axis self-retracting hydraulic cylinder 71 and the second Y-axis self-retracting hydraulic cylinder 72 are located on opposite sides of the Y-axis actuator 22 in the Y direction, and the Y-axis self-retracting hydraulic cylinder 71 and the second Y-axis self-retracting hydraulic cylinder 72 may be arranged in a manner that is referenced to the X-axis self-retracting hydraulic cylinder 51 and the second X-axis self-retracting hydraulic cylinder 52.

In embodiments, the case 12 is provided with a guide support frame 19 for supporting the X-axis self-return hydraulic cylinder 51, the second X-axis self-return hydraulic cylinder 52, the Y-axis self-return hydraulic cylinder 71 and the second Y-axis self-return hydraulic cylinder 72, the guide support frame 19 enables the acted part of the speed gear pull rod 6 to be located at a high position, and further reduces the operation resistance of the hydraulic cylinders, the guide support frame 19 can be provided with guide rails for guiding the movement of the X-axis actuator 21 and the Y-axis actuator 22, so that the movement direction of the actuators cannot be deviated.

In embodiments, the box 12 is provided with a clutch limit 3, a clutch release 10, and a hinge shaft 24, the hinge shaft 24 is hinged with a clutch lever 23, the lower part of the clutch lever 23 is connected with a connecting rod 25, the connecting rod 25 is connected to the clutch release 10, the clutch limit 3 is located on the side of the clutch lever 23 away from the side of the clutch release 10, when the clutch lever 23 is pushed toward the clutch release 10, the clutch release 10 is released, the clutch lever 23 is vertically provided with a clutch pull rod 2, and a worker can drive the clutch lever 23 to complete corresponding actions by holding the clutch pull rod 2 with his hand.

embodiments, the case 12 is provided with a steering tie rod 1, the steering tie rod 1 includes a vertical rod 101 and a pulling fork 28 connected to the lower end of the vertical rod 101, the pulling fork 28 has a right fork arm 281, a left fork arm 282, the right fork arm 281, the left fork arm 282 are respectively provided with a collar 29, the vertical rod 101 is hinged to the case 12, the collars 29 of the right fork arm 281, the left fork arm 282 are respectively provided with a right steering operation connecting rod 26, a left steering operation connecting rod 27, the end of the right steering operation connecting rod 26 is hinged to the right end of the right steering tie rod 14, the other end of the right steering operation connecting rod 26 passes through the collar 29 and is provided with a stop member 30 located outside the collar 29, the end of the left steering operation connecting rod 27 is hinged to the left end of the left steering tie rod 15, the other end of the left steering operation connecting rod 27 passes through the collar 29 and is provided with a stop member 30 located outside the collar 29, the left end of the right steering tie rod 14, the right end of the left steering tie rod 15 is respectively connected to the right steering separator 13, the left steering separator 20, the left steering rod 15 can be connected by a screw, the left steering rod can be connected.

In , a right steering cylinder 16 for controlling the separation of the right steering separator 13 and a left steering cylinder 17 for controlling the separation of the left steering separator 20 are also provided on the box 12, the hydraulic rod of the right steering cylinder 16 is connected to the right end of the right steering linkage 14, and the hydraulic rod of the left steering cylinder 17 is connected to the left end of the left steering linkage 15.

In the embodiments, the case 12 is further provided with a high-low gear pull rod 4.

In , the box 12 is further provided with a power output switching pull rod 9 and a power output gear 18, the power output gear 18 can be connected to rotary tillage, weeding, pesticide spraying and other implements for actual cultivation to provide power for agricultural implements, and the connection mode is a chain wheel, a chain shaft and the like.

In the embodiments, as shown in fig. 9, which is a schematic diagram of a gearbox, a case 12 is connected to an engine through a pulley 11, and the case 12 is provided with an oil injection device 8 for injecting lubricating oil.

And all the hydraulic cylinders are connected to an automatic control system to realize automatic control.

The operation process of the device is as follows: the gearbox comprises a gearbox body, a clutch mechanism, a steering mechanism, a high-low gear mechanism, a speed gear mechanism and an output mechanism. When the clutch lever 2 is pushed in the reverse direction of the clutch limit 3, the clutch lever 23 rotates clockwise, the clutch release 10 is disengaged, and the input is disconnected. When an operator pushes the steering pull rod 1 to the direction of the power output gear 18 or the hydraulic rod of the right steering hydraulic cylinder 17 extends upwards, the machine turns right; when the steering rod 1 is pushed towards the input pulley 11 or the left steering hydraulic cylinder 17 is extended, the machine is steered to the left. When an operator pushes the high-low gear pull rod 4 to the direction of the power output gear 18, the machine is in a low gear; when the high-low gear pull rod 4 pushes towards the input pulley 11, the machine is in a high gear. When the speed gear pull rod 6 is in the action position shown in fig. 8, the speed gear reverse gear and the 1, 2 and 3 gear work are realized.

The implementation process of the manual remote control dual-purpose mode is as follows:

1. the clutch mechanism is realized in a manual and remote control dual-purpose mode.

As shown in figure 1, the clutch pull rod 2 is manually pulled rightwards, the clutch pull rod 2 moves clockwise along a hinge shaft 24, a connecting rod 25 moves leftwards, the clutch separator 10 is disconnected, the clutch works, the power of the gearbox is cut off, the clutch pull rod 2 is released and automatically returns leftwards under the reaction force of the clutch, the clutch pull rod 2 moves anticlockwise along the hinge shaft 24, the connecting rod 25 moves rightwards, the clutch separator 10 is fitted, the power input of the gearbox is normal, and the manual clutch control is realized. When a remote control signal sends a clutch disconnection instruction, the lower end of the clutch rod 23 is pushed to the left by a hydraulic cylinder (not shown), the clutch pull rod 2 moves clockwise along the hinge shaft 24, the connecting rod 25 moves leftwards, the clutch separator 10 is disconnected, the clutch works, the power of the gearbox is cut off, when the clutch disconnection instruction is cancelled, the hydraulic cylinder automatically resets under the self-return action, the clutch pull rod 2 moves along the hinge shaft 24 in the quasi-clockwise direction, the connecting rod 25 moves rightwards, the clutch separator 10 is fitted, the power input of the gearbox is normal, and the remote control operation is realized.

2. The steering mechanism is realized in a manual and remote control dual-purpose mode.

As shown in fig. 2, the steering linkage 1 is moved leftwards manually, and under the hinging action of the intersection point on the box body 12, the inverted Y-shaped shifting fork rotates anticlockwise, the lantern ring 29 at the lower end point of the right side moves upwards under the action of the limit nut at the upper end of the left steering control connecting rod 27, the left steering control connecting rod 27 is lifted, through the hinging action of the lower end of the left steering control connecting rod 27 and the left end of the left steering linkage 15, the left steering linkage 15 rotates clockwise along the hinging point of the left steering separator 20, the power of a left driving wheel is disconnected, and the left steering is realized under the driving action of a right power wheel; the steering pull rod 1 is moved rightwards, under the hinging action of a cross point on the box body 12, the inverted V-shaped shifting fork rotates anticlockwise, the lantern ring 29 at the lower end point of the left side of the inverted V-shaped shifting fork moves upwards under the action of a limit nut at the upper end of the right steering control connecting rod 26, the right steering control connecting rod 26 is lifted, through the hinging action of the lower end of the right steering control connecting rod 26 and the right end of the right steering pull rod 14, the right steering pull rod 14 rotates anticlockwise along a hinge point of the right steering separator 13, the power of a right side driving wheel is disconnected, and right steering is realized under the driving action of a left side power wheel, so that manual steering is realized. When a remote control signal sends a left steering command, a push rod of a left steering hydraulic cylinder 17 pushes the left end of a left steering pull rod 15 upwards, a left steering control connecting rod 27 moves upwards along a lantern ring 29 at the lower end part of the right side of an inverted Y-shaped shifting fork of the steering pull rod 1, the left steering pull rod 15 rotates clockwise along a hinged point of a left steering separator 20 to complete the disconnection of the power of a left driving wheel, left steering is realized under the driving action of a right power wheel, the remote control signal continuously gives the left steering command at the moment, the push rod of the left steering hydraulic cylinder 17 is kept in an upwards pushing state to realize continuous left steering, and when the remote control signal left steering command is released or eliminated, the push rod of the left steering hydraulic cylinder 17 is in a retracting state under the self-return acting force; when a remote control signal sends a right steering command, the push rod of the right steering hydraulic cylinder 16 pushes the right end of the right steering pull rod 14 upwards, the right steering control connecting rod 26 moves upwards along a lantern ring 29 at the lower end part of the left side of the inverted Y-shaped shifting fork of the steering pull rod 1, the right steering pull rod 14 rotates anticlockwise along the hinge point of the right steering separator 13 to complete the disconnection of the power of the right driving wheel, right steering is realized under the driving action of the power wheel on the left side, the remote control signal continuously gives the right steering command at the moment, the push rod of the right steering hydraulic cylinder 16 is kept in an upwards pushing state to realize continuous right steering, and when the remote control signal is released or eliminated, the push rod of the right steering hydraulic cylinder 16 is in a retracting state under the self-return acting force, and the right steering separator 13 is fitted to realize the. Therefore, the left-right steering cross type operation and control of the manual remote control are completed.

3. The high-low gear mechanism is realized in a manual and remote control dual-purpose mode.

As shown in fig. 1, the manual shift of the high-low shift lever 4 is performed forward to realize the low shift transmission, and the manual shift of the high-low shift lever 4 is performed backward to realize the high shift transmission, which realizes the manual operation. When a remote control signal sends a low gear instruction, a mandril of a rear end hydraulic cylinder (not shown) pushes the high-low gear pull rod 4 to move forwards, then the mandril automatically returns to realize low gear transmission, at the moment, the high-low gear pull rod 4 is manually moved backwards to realize high gear transmission, and therefore remote control and manual cross operation are realized. When the remote control signal sends a high-gear instruction, the ejector rod of the front-end hydraulic cylinder pushes the high-low gear pull rod 4 to move backwards, and then the ejector rod automatically returns to realize high-speed gear transmission, so that the remote control of high-low gear operation is realized.

4. The manual remote control dual-purpose mode of the output mechanism is realized.

As shown in figure 6, a manual operating rod 6 is arranged at the leftmost side, a hydraulic ejector rod convenient for remote control operation is in contact with the manual operating rod and abuts against the manual operating rod, when the manual operating rod is pulled to the right side, power output of a gearbox is achieved, manual operation is achieved, when an X-axis self-return hydraulic cylinder 51 ejector rod abuts against the manual operating rod to the right side, then the power output of the gearbox is achieved by means of the return action of the self-return hydraulic cylinder, when an X-axis self-return hydraulic cylinder 51 ejector rod returns to the initial position, power output of the gearbox is achieved, when an X-axis self-return hydraulic cylinder 51 ejector rod abuts against the manual operating rod 6 to the right side, then the hydraulic ejector rod returns to the initial position by means of the return action of the self-return hydraulic cylinder, power output of the gearbox is normal, and an opposite second X-axis self-return hydraulic cylinder 52 ejector rod abuts against the manual operating rod to the left side, remote control.

5. The switching process of the speed gear mechanism is as follows:

as shown in fig. 4-8, after the remote control system is assigned a shift 1 gear command, the clutch release 10 for power input to the transmission is temporarily disengaged, power input to the transmission is cut off, the Y-axis self-return hydraulic cylinder 71 and the second Y-axis self-return hydraulic cylinder 72 in fig. 5 are first respectively applied to two rectangular actuators horizontally arranged in the vertical direction (Z direction), i.e., the X-axis actuator 21 and the Y-axis actuator 22, when the manual shift lever 6 is pushed to an intermediate horizontal line position, the speed shift lever 6 is influenced by the self-return action to return to the original point, i.e., the symmetric center position of the actuator in fig. 8, and then the hydraulic cylinders are respectively returned, the second X-axis self-return hydraulic cylinder 52 pushes the X-axis actuator 21 leftward in the X-axis direction, the Y-axis actuator 72 pushes the Y-axis actuator 22 in the Y-axis direction, then the Y-direction hydraulic cylinder and the X-direction hydraulic cylinder are automatically returned in sequence, and the remote control system can be operated in a mode in which the X-axis automatic shift control mode, the automatic shift control system can be operated in which the shift 1 gear shift mode, the automatic shift mode in which the shift control mode does not require the X-axis and the automatic shift control mode which does not require the manual shift lever 21 and the automatic return of the automatic shift lever 6.

In summary, the embodiment of the invention discloses manual remote control dual-purpose gearboxes suitable for agricultural vehicles and an operation and control implementation method thereof, the manual remote control dual-purpose gearboxes can realize seamless connection of manual operation and remote control operation of the agricultural vehicles, particularly crawler-type agricultural vehicles suitable for mountain and hill terrain operation, and the defect that the conventional remote control agricultural vehicles cannot perform manual and remote control cross operation is effectively overcome.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.