Quick response stop lock device and method for non-level work vehicle

Abstract

The application discloses a quick response start-stop locking device and locking method of a non-flat ground operation vehicle, which comprises a piston power unit and a locking module arranged in a shell assembly, wherein the piston power unit comprises a first piston module and a second piston module arranged in a first cavity and a second cavity respectively; the first cavity is communicated with a first pressure relief assembly, and the second cavity is communicated with a second pressure relief assembly; when the first pressure relief assembly is in a pressure relief state and the second pressure relief assembly is in a pressure increasing state, the locking module realizes an unlocking operation; when the first pressure relief assembly is in a pressure increasing state and the second pressure relief assembly is in a pressure relief state, the locking module realizes a locking operation; the quick response start-stop locking device and locking method of the non-flat ground operation vehicle realize the purpose of quick unlocking after the accelerator is stepped on and quick locking after the accelerator is released, thereby meeting the quick locking of the special vehicle after fine adjustment on the complex terrain and avoiding the slippage of the vehicle due to the untimely locking during the fine adjustment.

Description

Technical Field

[0001] This invention belongs to the field of vehicle parts technology, and in particular to a rapid response start-stop locking device and locking method for non-flat-ground operation vehicles. Background Technology

[0002] Ordinary vehicles typically start and stop by switching between the accelerator and brake, a start-stop system suitable for most everyday driving scenarios. However, for specialized vehicles operating in challenging terrains such as slopes, mountains, forests, and uneven ground—e.g., excavators for moving seedlings with roots, logging vehicles, and obstacle clearing vehicles—the operating environments are complex and varied. To find a more suitable working angle, these vehicles often need to maneuver and make repeated minor adjustments across complex terrains. Uneven terrain can cause vehicles to slip and veer when releasing the accelerator and applying the brakes. Therefore, in these operating scenarios, the accelerator and brake systems of conventional vehicles cannot meet the needs of these specialized vehicles for rapid response and quick locking after short-range maneuvers in complex terrains. Summary of the Invention

[0003] Purpose of the invention: To provide a rapid response start-stop locking device and locking method for vehicles operating on non-flat terrain, applicable to special vehicles operating in special terrains such as slopes, mountains, forests, and potholes, to achieve rapid response and locking after small-scale maneuvering in complex terrain, thereby improving the safety of vehicles operating in complex terrain and working conditions.

[0004] To achieve the above objectives, the present invention is implemented using the following technical solution:

[0005] In a first aspect, a rapid response start-stop locking device for non-flat-ground operation vehicles is provided, including a piston power unit disposed in a housing assembly and a locking module connected to the piston power unit. The piston power unit includes a first piston module and a second piston module connected sequentially along the length direction of the housing assembly. One end of the locking module extends into the housing assembly and is connected to the first piston module, and the other end corresponds to the vehicle.

[0006] The first piston module and the second piston module are respectively disposed in the first cavity and the second cavity reserved in the housing assembly;

[0007] The first cavity is connected to a first venting assembly disposed on the housing assembly, the first venting assembly providing power for the movement of the first piston module; the second cavity is connected to a second venting assembly disposed on the housing assembly, the second venting assembly providing power for the movement of the second piston module.

[0008] When the first pressure relief component is in a depressurized state and the second pressure relief component is in a pressurized state, the second piston module drives the first piston module to contract, thereby enabling the locking module to unlock the vehicle.

[0009] When the first pressurization / depressurization assembly is in a pressurized state and the second pressurization / depressurization assembly is in a depressurized state, the first piston module drives the second piston module to extend, so that the locking module can lock the vehicle.

[0010] In some possible embodiments, the housing assembly includes a first housing, a second housing, and a third housing that are sequentially connected and fixed by axial bolts;

[0011] The first cavity is reserved inside the first housing, and the first cavity has a first front movable section and a first rear movable section;

[0012] The second cavity is reserved inside the second housing, and the second cavity has a second front movable section and a second rear movable section;

[0013] The third housing has a reserved third cavity, which is equipped with a braking and maintaining module. The third cavity has a third front movable section and a third rear movable section.

[0014] In a further embodiment, the first pressure inlet and outlet assembly is disposed on the first housing and communicates with the first front movable section, and the first pressure inlet and outlet assembly includes a first pressure inlet and a first pressure outlet.

[0015] The second pressure inlet and outlet assembly is disposed on the second housing and communicates with the second front movable section. The second pressure inlet and outlet assembly includes a second pressure inlet and a second pressure outlet.

[0016] In a further embodiment, the first piston module includes a first piston body having a first front connecting portion and a first rear connecting portion;

[0017] The second piston module includes a second piston body having a second front connecting portion and a second rear connecting portion;

[0018] The first rear connecting part and the second front connecting part are fixed by threaded connection in the first rear movable section and the second front movable section.

[0019] In a further embodiment, the brake sustaining module is connected to the second piston module, and the brake sustaining module is used to hold the locking module in a locked state;

[0020] The brake maintenance module includes a guide rod and an ejector spring sleeved on the guide rod. The ejector spring is located in the third front movable section. One end of the guide rod is connected to the second rear connecting part, and the other end is slidably disposed in the third rear movable section.

[0021] In a further embodiment, a limiting structure is provided between the guide rod and the third rear movable section, the limiting structure including a limiting screw and a limiting nut;

[0022] The guide rod has a sliding hole that is slidably connected to one end of the limiting screw, and the other end of the limiting screw extends out of the third housing and is connected to the limiting nut;

[0023] A butterfly-shaped spring is provided between the limiting nut and the third housing.

[0024] In a further embodiment, an exhaust valve is provided on the side wall of the third housing, and the exhaust valve is connected to the third front movable section;

[0025] A rear cover is threaded onto the end of the third housing that is opposite to the second housing.

[0026] In a further embodiment, the locking module includes a locking pin and a locking seat. The locking seat is disposed in a pre-reserved connection space in the first piston body. One end of the locking pin extends into the connection space and connects to the locking seat. A support ring is also provided between the connection space and the locking pin.

[0027] In a further embodiment, the connecting space sequentially connects the first central hole and the second central hole, the axes of the first central hole and the second central hole are on the same axis, the first central hole is opened in the first rear connecting section, and the second central hole is opened in the second front connecting section;

[0028] One end of the follower screw passes through the first central hole and enters the connection space to connect to the locking seat, while the other end is located in the second central hole and connected to the follower nut.

[0029] Secondly, a locking method based on the aforementioned rapid response start-stop locking device for non-flat terrain operation vehicles is provided, the method being as follows:

[0030] When the vehicle is in motion, pressing the accelerator pedal pressurizes the second pressure-release component while depressurizing the first pressure-release component. The second piston module then causes the first piston module to contract, thereby enabling the locking module to unlock the vehicle.

[0031] When the vehicle is parked, releasing the accelerator causes the first pressure-release assembly to be pressurized, while the second pressure-release assembly is depressurized. The first piston module drives the second piston module to extend, enabling the locking module to lock the vehicle.

[0032] In the driving state, the ejector spring of the brake holding module is in a compressed state, and in the parking state, the ejector spring is in a reset and tensioned state.

[0033] The beneficial effects of this invention are as follows: By using the first and second chambers to coordinate with the pressing or releasing of the accelerator pedal to achieve synchronous pressurization and depressurization, the piston power unit can be driven to drive the locking module to operate in coordination. This achieves the purpose of quickly unlocking when the accelerator pedal is pressed and quickly locking when the accelerator pedal is released. This allows the locking module to meet the requirements of rapid response to unlocking / locking operations, thereby meeting the requirements of rapid locking of special vehicles after fine-tuning in complex terrain, and avoiding the situation where the vehicle slips due to untimely locking during fine-tuning. Attached Figure Description

[0034] Figure 1 This is a side cross-sectional view of the present invention.

[0035] Figure 2 This is a top view of the structure of the present invention.

[0036] Figure 3 This is a schematic diagram of the driving principle of the present invention.

[0037] The attached figures are labeled as follows: 1. Locking pin; 2. Support ring; 3. Locking seat; 4. Follower screw; 5. Follower nut; 6. First piston body; 7. First housing; 8. Second piston body; 9. Second housing; 10. Second housing; 11. First pressure inlet; 12. Second pressure inlet; 13. Third housing; 14. Third front movable section; 15. Ejector spring; 16. Exhaust valve; 17. Limiting screw; 18. Limiting nut; 19. Butterfly spring; 20. Rear cover; 21. Guide rod; 22. Third rear movable section; 23. Axial bolt; 24. First pressure relief port; 25. Second pressure relief port; 26. Detailed Implementation

[0038] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.

[0039] The present invention will be further described in detail below with reference to the accompanying drawings.

[0040] Example 1: Refer to Figure 1This embodiment discloses a rapid response start-stop locking device for non-flat terrain operation vehicles, including a piston power unit disposed within a housing assembly and a locking module connected to the piston power unit. The piston power unit includes a first piston module and a second piston module connected sequentially along the length direction of the housing assembly. One end of the locking module extends into the housing assembly and is connected to the first piston module, while the other end corresponds to the vehicle. Driven by the piston power unit, the locking module performs an extension or retraction operation, thereby realizing the locking or unlocking operation of the vehicle body.

[0041] The first piston module and the second piston module are respectively disposed in the first cavity 8 and the second cavity 11 reserved in the housing assembly.

[0042] Specifically, the first cavity 8 is connected to a first venting assembly disposed on the housing assembly, the first venting assembly providing power for the movement of the first piston module; the second cavity 11 is connected to a second venting assembly disposed on the housing assembly, the second venting assembly providing power for the movement of the second piston module.

[0043] When the first pressure relief component is in a depressurized state and the second pressure relief component is in a pressurized state, the second piston module drives the first piston module to contract, thereby enabling the locking module to unlock the vehicle.

[0044] When the first pressurization / depressurization assembly is in a pressurized state and the second pressurization / depressurization assembly is in a depressurized state, the first piston module drives the second piston module to extend, so that the locking module can lock the vehicle.

[0045] Specifically, such as Figure 2 As shown, the housing assembly includes a first housing 7, a second housing 10, and a third housing 14 that are sequentially connected and fixed by axial bolts 24;

[0046] The first cavity 8 is reserved inside the first housing 7. The first cavity 8 has a first front movable section and a first rear movable section. The first front movable section and the first rear movable section form a through hole that is larger in the front and smaller in the rear.

[0047] The second housing 10 has a second cavity 11, which has a second front movable section and a second rear movable section; the second front movable section and the second rear movable section form another through hole that is smaller in the front and larger in the back.

[0048] The third housing 14 has a reserved third cavity, which is equipped with a braking maintenance module. The third cavity has a third front movable section 15 and a third rear movable section 23.

[0049] The first pressure inlet and outlet assembly is disposed on the first housing 7 and communicates with the first front movable section. The first pressure inlet and outlet assembly includes a first pressure inlet 12 and a first pressure outlet 25.

[0050] The second pressure inlet and outlet assembly is disposed on the second housing 10 and communicates with the second front movable section. The second pressure inlet and outlet assembly includes a second pressure inlet 13 and a second pressure outlet 26.

[0051] Specifically, the first piston module includes a first piston body 6 having a first front connecting portion and a first rear connecting portion;

[0052] The second piston module includes a second piston body 9 having a second front connecting portion and a second rear connecting portion;

[0053] The first rear connecting part and the second front connecting part are fixed by threaded connection in the first rear movable section and the second front movable section; the first rear movable section and the second front movable section form a journal section, and a sealing ring is provided between the first rear connecting part and the second front connecting part and the journal section, so as to adapt to the through hole section of the rear end of the first housing 7 and the front end of the second housing 10 to form a front sealing guide structure, and the two cavities are isolated from each other by the sealing guide structure.

[0054] Specifically, the brake holding module is connected to the second piston module, and the brake holding module is used to keep the locking module in a locked state when the vehicle is in a parked state.

[0055] Optionally, the medium in the first chamber 8 and the second chamber 11 is hydraulic oil or compressed gas.

[0056] The brake maintenance module includes a guide rod 22 and an ejector spring 16 sleeved on the guide rod 22. The ejector spring 16 is located in the third front movable section 15. One end of the guide rod 22 is connected to the second rear connecting part, and the other end is slidably disposed in the third rear movable section 23. The guide rod 22 extends into the third rear movable section 23 to form a rear guide structure.

[0057] Optionally, the ejector spring 16 is a disc spring, which can maintain uniform elasticity in all directions. Compared with the mode of simply using an ejector spring 16 for a single response, the unlocking / locking response speed of this device is fast, realizing rapid switching between starting, stopping, and locking of special operation vehicles, and avoiding slippage of the vehicle due to untimely locking during fine-tuning.

[0058] Furthermore, in order to ensure that the brake maintenance module can operate normally and facilitate maintenance in case of failure, a limiting structure is provided between the guide rod 22 and the third rear movable section 23. The limiting structure includes a limiting screw 18 and a limiting nut 19.

[0059] Specifically, the guide rod 22 has a sliding hole that is slidably connected to one end of the limiting screw 18. The other end of the limiting screw 18 extends out of the third housing 14 and is connected to the limiting nut 19. A butterfly spring 20 is provided between the limiting nut 19 and the third housing 14. When the hydraulic system of the whole machine fails, since there is no pressurized oil in the second pressure inlet 13 and the second pressure relief port 26 on the side of the second housing 10, the ejector spring 16 is always in a tensile state, and the whole machine is in a braking state and cannot move. At this time, the rear cover 21 can be removed first, and then the limiting nut 19 at the front end of the limiting screw 18 can be rotated. By pulling the limiting bolt, the second piston body 9 and the brake holding module can be moved towards the rear cover 21 to manually release the brake lock operation. The whole machine can then be driven to a safe area for maintenance.

[0060] An exhaust valve 17 is provided on the side wall of the third housing 14. The exhaust valve 17 is connected to the third front movable section 15. When the temperature rises during the use of this device, it can exhaust the gas in time to reduce the internal pressure of the third front movable section 15. A rear cover 21 is threadedly connected to the end of the third housing 14 away from the second housing 10. An O-ring seal is provided between the rear cover 21 and the third housing 14.

[0061] The locking module includes a locking pin 1 and a locking seat 3. The locking seat 3 is located in a pre-reserved connection space within the first piston body 6. One end of the locking pin 1 extends into the connection space and connects to the locking seat 3. A support ring 2 is also provided between the connection space and the locking pin 1. The support ring 2 is used to limit the locking pin 1 in the connection space when the locking pin 1 is inserted into the locking seat 3.

[0062] The connecting space sequentially connects the first central hole and the second central hole. The axes of the first central hole and the second central hole are on the same axis. The first central hole is opened in the first rear connecting section, and the second central hole is opened in the second front connecting section.

[0063] One end of the follower screw 4 passes through the first central hole and enters the connection space to connect to the locking seat 3, while the other end is located in the second central hole and connected to the follower nut 5.

[0064] Furthermore, the first central hole is a stepped hole, and the locking seat 3 and the follower nut 5 are respectively locked at the front and rear ends of the stepped hole to form a follower. The follower of the locking seat 3 is assembled and cooperated with the first piston body 6. The second central hole is a clearance hole, which leaves space for the installation of the follower screw 4 and the follower nut 5.

[0065] Optionally, the locking seat 3 and the follower screw 4 are fixed by screw tightening. In this way, the rear end of the follower screw 4 is fixed with an internal hexagon follower nut 5. When performing disassembly and assembly operations, the support ring 2 and the locking pin 1 are removed from one end of the locking seat 3, and then the follower screw 4 is removed from the other end of the locking seat 3 to disassemble the locking seat 3. Conversely, the locking seat 3 can be assembled.

[0066] Optionally, the locking seat 3 and the follower screw 4 can also be an integral structure. The rear end of the follower screw 4 is a smooth rod, and it is connected to the follower nut 5 by a threaded disassembly structure. In this way, the locking seat 3, the follower screw 4 and the first piston body 6 can be assembled by inserting from the front end, and then connected by thread through the follower nut 5 to meet the follower requirements.

[0067] Example 2: Based on Example 1, this example discloses a locking method for a rapid response start-stop locking device for non-flat terrain operation vehicles, referring to... Figure 3 The method is as follows:

[0068] When the vehicle is in motion, pressing the accelerator pedal pressurizes the second pressure-release component while depressurizing the first pressure-release component. The second piston module then causes the first piston module to contract, thereby enabling the locking module to unlock the vehicle.

[0069] When the vehicle is parked, releasing the accelerator causes the first pressure-release assembly to be pressurized, while the second pressure-release assembly is depressurized. The first piston module drives the second piston module to extend, enabling the locking module to lock the vehicle.

[0070] In the driving state, the ejector spring 16 of the brake maintenance module is in a compressed state, and in the parking state, the ejector spring 16 is in a reset tensioned state.

[0071] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0072] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A rapid-response start-stop locking device for a non-flat-ground work vehicle, comprising a piston power unit disposed within a housing assembly and a locking module connected to the piston power unit, characterized in that: The piston power unit includes a first piston module and a second piston module connected sequentially along the length of the housing assembly. One end of the locking module extends into the housing assembly and is connected to the first piston module, while the other end corresponds to the vehicle. The first piston module and the second piston module are respectively disposed in the first cavity and the second cavity reserved in the housing assembly; The first cavity is connected to a first venting assembly disposed on the housing assembly, the first venting assembly providing power for the movement of the first piston module; the second cavity is connected to a second venting assembly disposed on the housing assembly, the second venting assembly providing power for the movement of the second piston module. When the first pressure relief component is in a depressurized state and the second pressure relief component is in a pressurized state, the second piston module drives the first piston module to contract, thereby enabling the locking module to unlock the vehicle. When the first pressurization / depressurization assembly is in a pressurized state and the second pressurization / depressurization assembly is in a depressurized state, the first piston module drives the second piston module to extend, so that the locking module can lock the vehicle.

2. The rapid response start-stop locking device for non-flat terrain operation vehicles according to claim 1, characterized in that: The housing assembly includes a first housing, a second housing, and a third housing that are sequentially connected and fixed by axial bolts. The first cavity is reserved inside the first housing, and the first cavity has a first front movable section and a first rear movable section; The second cavity is reserved inside the second housing, and the second cavity has a second front movable section and a second rear movable section; The third housing has a reserved third cavity, which is equipped with a braking and maintaining module. The third cavity has a third front movable section and a third rear movable section.

3. The rapid response start-stop locking device for non-flat terrain operation vehicles according to claim 2, characterized in that: The first pressure inlet and outlet assembly is disposed on the first housing and communicates with the first front movable section. The first pressure inlet and outlet assembly includes a first pressure inlet and a first pressure outlet. The second pressure inlet and outlet assembly is disposed on the second housing and communicates with the second front movable section. The second pressure inlet and outlet assembly includes a second pressure inlet and a second pressure outlet.

4. The rapid response start-stop locking device for non-flat terrain operation vehicles according to claim 2, characterized in that: The first piston module includes a first piston body having a first front connecting portion and a first rear connecting portion; The second piston module includes a second piston body having a second front connecting portion and a second rear connecting portion; The first rear connecting part and the second front connecting part are fixed by threaded connection in the first rear movable section and the second front movable section.

5. The rapid response start-stop locking device for non-flat terrain operation vehicles according to claim 4, characterized in that: The brake sustaining module is connected to the second piston module, and the brake sustaining module is used to keep the locking module in the locked operation state; The brake maintenance module includes a guide rod and an ejector spring sleeved on the guide rod. The ejector spring is located in the third front movable section. One end of the guide rod is connected to the second rear connecting part, and the other end is slidably disposed in the third rear movable section.

6. The rapid response start-stop locking device for non-flat terrain operation vehicles according to claim 5, characterized in that: A limiting structure is also provided between the guide rod and the third rear movable section, the limiting structure including a limiting screw and a limiting nut; The guide rod has a sliding hole that is slidably connected to one end of the limiting screw, and the other end of the limiting screw extends out of the third housing and is connected to the limiting nut; A butterfly-shaped spring is provided between the limiting nut and the third housing.

7. The rapid response start-stop locking device for non-flat terrain operation vehicles according to claim 2, characterized in that: An exhaust valve is provided on the side wall of the third housing, and the exhaust valve is connected to the third front movable section; A rear cover is threaded onto the end of the third housing that is opposite to the second housing.

8. The rapid response start-stop locking device for non-flat terrain operation vehicles according to claim 4, characterized in that: The locking module includes a locking pin and a locking seat. The locking seat is located in a pre-reserved connection space within the first piston body. One end of the locking pin extends into the connection space and connects to the locking seat. A support ring is also provided between the connection space and the locking pin.

9. The rapid response start-stop locking device for non-flat terrain operation vehicles according to claim 8, characterized in that: The connecting space sequentially connects the first central hole and the second central hole, with the axes of the first central hole and the second central hole on the same axis. The first central hole is opened in the first rear connecting section, and the second central hole is opened in the second front connecting section. One end of the follower screw passes through the first central hole and enters the connection space to connect to the locking seat, while the other end is located in the second central hole and connected to the follower nut.

10. A locking method for a rapid-response start-stop locking device for non-flat terrain operation vehicles according to any one of claims 1-9, characterized in that: The method is as follows: When the vehicle is in motion, pressing the accelerator pedal pressurizes the second pressure-release component while depressurizing the first pressure-release component. The second piston module then causes the first piston module to contract, thereby enabling the locking module to unlock the vehicle. When the vehicle is parked, releasing the accelerator causes the first pressure-release assembly to be pressurized, while the second pressure-release assembly is depressurized. The first piston module drives the second piston module to extend, enabling the locking module to lock the vehicle. In the driving state, the ejector spring of the brake holding module is in a compressed state, and in the parking state, the ejector spring is in a reset and tensioned state.

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