Hydraulic lock for turning and locking cab
Through the modularly designed hydraulic lock, threaded connection and spring mechanism, the existing hydraulic lock structure is solved and the problems of complex structure and many parts are achieved, achieving simple assembly and cost savings.
Patent Information
- Application Number
- CN202422403362.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The cylinder block and lock body components of the existing hydraulic lock are fixed by welding, which can easily lead to deformation of the cylinder block, and the structure is complex, there are many spare parts, and inconvenient assembly, which increases production and assembly costs.
The modular design of the cylinder module and lock body module enables the locking and unlocking of the lock hook through threaded connections and spring mechanisms, simplifying the structure and reducing spare parts.
The hydraulic lock is simple in structure and convenient in assembly, which reduces production and assembly costs, and improves the stability and convenience of connections.
Smart Images
Figure CN223161878U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydraulic locks, and particularly relates to a hydraulic lock for cab turnover locking. Background Technique
[0002] The existing rear suspension structure of a truck cab is arranged between the truck cab and the chassis frame and serves as a mechanism for supporting and damping. For a hydraulically tiltable cab, the rear suspension structure is divided into upper and lower parts, and the upper and lower parts are connected by a hydraulic lock and a locking bolt. When lifting, the lock catch of the hydraulic lock opens, and the upper and lower parts are separated. After falling, the lock catch is buckled in reverse, and the upper and lower parts are locked.
[0003] The existing hydraulic locks have the following problems: The cylinder body of the cylinder component is fixed to the support plate of the lock body component by welding, and welding is likely to cause deformation of the cylinder body, which is not conducive to the frequent reciprocating telescoping of the piston rod; If interference fit is adopted, it is difficult for machining parts. In addition, the existing hydraulic lock has a complex structure, many parts, and inconvenient assembly. Summary of the Invention
[0004] The purpose of the utility model is to provide a hydraulic lock for cab turnover locking, which has a simple structure, convenient assembly, fewer parts, and saves production costs and assembly costs.
[0005] The above technical purpose of the utility model is achieved by the following technical solutions: A hydraulic lock for cab turnover locking includes
[0006] An oil cylinder module, the oil cylinder module includes a cylinder body, a piston rod slidably arranged in the cylinder body, and a seal arranged in the cylinder body in a sealed manner. A through oil port is arranged at the first end of the cylinder body, and a first threaded connection part is arranged at the second end of the cylinder body;
[0007] A lock body module, the lock body module includes a sleeve and a lock hook assembly. The lock hook assembly includes a mounting seat movably arranged in the sleeve and a lock hook rotatably connected to the mounting seat. The sleeve includes a cylindrical part and a first support plate and a second support plate fixed on both sides of the cylindrical part. The first support plate is arranged on the side adjacent to the cylinder body, and the first support plate is provided with a second threaded connection part threadedly connected to the first threaded connection part. The second support plate is arranged on the side away from the cylinder body, a spring is arranged between the second support plate and the mounting seat, and the second support plate is provided with an opening for the lock hook to extend out of the cylinder body;
[0008] In the initial state, the piston rod of the oil cylinder module is located in the cylinder body, and the lock hook assembly is in the original position under the action of the spring. At this time, the lock hook is in the locked state; When the oil cylinder module is supplied with oil, the piston rod moves towards the sleeve side and drives the lock hook assembly to move towards the side of compressing the spring. At this time, the lock hook moves towards the unlocking side.
[0009] Further, a stepped portion is provided on one side of the cylinder block corresponding to the first threaded connection portion, and the first support plate is threadedly connected to the cylinder block and abuts against the stepped portion of the cylinder block.
[0010] Further, a first annular groove is provided in the inner cavity of the second end of the cylinder block, a dust-proof ring is provided in the first annular groove, and the inner ring of the dust-proof ring is in contact with the piston column.
[0011] Further, the dust-proof ring is provided with a conical portion, and the diameter of the conical portion shrinks toward the side of the sleeve and is in contact with the piston column.
[0012] Further, a second annular groove is provided in the cylinder block, the second annular groove is provided on the other side of the dust-proof ring relative to the sleeve, and a seal member that is in sealing cooperation with the piston column is provided in the second annular groove.
[0013] Further, a blind groove is provided on one side of the piston column adjacent to the oil port, and the blind groove is provided on the end face of the piston column.
[0014] Further, the opening is a vertically arranged strip-shaped groove, and the locking hook can swing reciprocally along the length direction of the strip-shaped groove.
[0015] Further, a limiting block is provided at the inner end of the second support plate, and the locking hook is provided with a limiting portion. When the locking hook is in the locked state, the limiting cooperation between the limiting block and the limiting portion is used to limit the swinging of the locking hook.
[0016] Further, the mounting seat includes a seat body and a connecting column fixed to the seat body, and the locking hook is rotatably mounted on the connecting column through a pin shaft.
[0017] Further, an arc portion is provided on one side of the locking hook adjacent to the piston column. When the piston column moves toward the compression spring side, the piston column abuts against the arc portion of the locking hook and drives the locking hook assembly to move toward the compression spring side, and the locking hook swings toward the unlocking direction along the arc portion under the push of the piston column.
[0018] In summary, the present utility model has the following beneficial effects:
[0019] The hydraulic lock for cab flipping lock of the present utility model has a simple structure, convenient assembly, and fewer parts, saving production costs and assembly costs. Working principle: In the initial state, the piston column of the oil cylinder module is located in the cylinder block, and the locking hook assembly is in the original position under the action of the spring. At this time, the locking hook is in the locked state; when the oil cylinder module is supplied with oil, the piston column moves toward the sleeve side and drives the locking hook assembly to move toward the compression spring side. At this time, the locking hook moves toward the unlocking side; when the oil cylinder module pumps oil, the locking hook assembly resets under the action of the spring, and at the same time, the piston column retracts into the cylinder block under the drive of the mounting seat. Description of the Drawings
[0020] Figure 1 It is a schematic structural diagram when the lock body module of the present utility model is locked.
[0021] Figure 2 It is of the present utility model Figure 2 An enlarged view of part A.
[0022] Figure 3 It is a schematic structural diagram when the lock body module of the present utility model is unlocked.
[0023] Figure 4 It is a schematic diagram showing the width sizes of the opening and the locking hook of the present utility model.
[0024] In the figure: 10, oil cylinder module; 11, cylinder block; 111, oil port; 112, first threaded connection part; 113, step part; 12, piston column; 121, blind groove; 13, seal; 14, dust ring; 20, lock body module; 21, sleeve; 211, cylinder part; 212, first support plate; 2121, second threaded connection part; 213, second support plate; 2131, opening; 22, locking hook assembly; 221, mounting seat; 2211, seat body; 2212, connecting column; 2213, pin shaft; 222, locking hook; 2221, arc part; 23, spring; 24, limit block. Specific embodiments
[0025] The present utility model will be further described below with reference to the accompanying drawings.
[0026] As Figures 1-4 shown, a hydraulic lock for cab tilting lock includes an oil cylinder module 10 and a lock body module 20. The hydraulic lock adopts a modular design, which makes the assembly of the hydraulic lock more convenient, that is, the oil cylinder module 10 and the lock body module 20 can be assembled separately, and after the oil cylinder module 10 and the lock body module 20 are independently assembled, they are assembled as a whole.
[0027] The oil cylinder module 10 includes a cylinder block 11, a piston column 12 slidably disposed in the cylinder block 11, and a seal 13 hermetically disposed in the cylinder block 11. An oil port 111 is provided at the first end of the cylinder block 11, and a first threaded connection part 112 is provided at the second end of the cylinder block 11.
[0028] The lock body module 20 includes a sleeve 21 and a lock hook assembly 22. The lock hook assembly 22 includes a mounting seat 221 movably disposed within the sleeve 21 and a lock hook 222 rotatably connected to the mounting seat 221. The sleeve 21 includes a cylindrical body portion 211 and a first support plate 212 and a second support plate 213 fixed to both sides of the cylindrical body portion 211. The first support plate 212 is disposed on the side adjacent to the cylinder block 11, and the first support plate 212 is provided with a second threaded connection portion 2121 threadedly connected to the first threaded connection portion 112. The second support plate 213 is disposed on the side away from the cylinder block 11, and a spring 23 is provided between the second support plate 213 and the mounting seat 221. The second support plate 213 is provided with an opening 2131 for the lock hook 222 to extend out of the cylinder block 11. Specifically, in the present utility model, an arc portion 2221 is provided on the side of the lock hook 222 adjacent to the piston rod 12. When the piston rod 12 moves toward the side of the compression spring 23, the piston rod 12 abuts against the arc portion 2221 of the lock hook 222 and drives the lock hook assembly 22 to move toward the side of the compression spring 23. The lock hook 222 will swing toward the unlocking direction along the arc portion 2221 under the push of the piston rod 12. That is to say, when the moving lock hook assembly 22 moves toward the side of the compression spring 23, the lock hook 222 swings toward the unlocking direction under the combined action of the arc portion 2221 and the piston rod 12.
[0029] The working principle of this hydraulic lock: In the initial state, the piston rod 12 of the oil cylinder module 10 is located within the cylinder block 11, and the lock hook assembly 22 is in the original position under the action of the spring 23. At this time, the lock hook 222 is in the locked state; when the oil cylinder module 10 is supplied with oil, the piston rod 12 moves toward the sleeve 21 and drives the lock hook assembly 22 to move toward the side of the compression spring 23. At this time, the lock hook 222 moves toward the unlocking side; when the oil cylinder module 10 pumps oil, the lock hook assembly 22 resets under the action of the spring 23, and at the same time, the piston rod 12 retracts into the cylinder block 11 under the drive of the mounting seat 221.
[0030] In some embodiments, a stepped portion 113 is provided on the side of the cylinder block 11 corresponding to the first threaded connection portion 112. The first support plate 212 is threadedly connected to the cylinder block 11 and abuts against the stepped portion 113 of the cylinder block 11, which can ensure that the connection between the oil cylinder module 10 and the lock body module 20 is more firm and stable. The threaded connection method is used to realize the rapid disassembly and assembly of the oil cylinder module 10 and is not easily contaminated with dust. The threaded connection is not only simple in processing but also very convenient in installation operation.
[0031] In some embodiments, a first annular groove is provided in the inner cavity of the second end of the cylinder block 11. The first annular groove is provided at a position close to the second end of the oil cylinder. A dust-proof ring 14 is provided in the first annular groove. The inner ring of the dust-proof ring 14 is in contact with the piston rod 12. The provision of the dust-proof ring 14 can prevent dust in the lock hook 222 module or external dust from entering the cylinder block 11 and thus polluting the oil cylinder module 10.
[0032] In some embodiments, the dust ring 14 is provided with a conical portion, and the diameter of the conical portion shrinks toward one side of the sleeve 21 and contacts the piston rod 12. Through the arrangement of the conical portion, it can ensure better contact and cooperation between the dust ring 14 and the piston rod 12, thereby playing a better dust-proof role.
[0033] In some embodiments, a second ring groove is provided in the cylinder block 11, and the second ring groove is provided on the other side of the dust ring 14 relative to the sleeve 21. A seal 13 that is sealingly matched with the piston rod 12 is provided in the second ring groove, and the seal 13 is arranged on the side of the cylinder block 11 farther from the corresponding first support plate 212.
[0034] In some embodiments, a blind groove 121 is formed on one side of the piston rod 12 adjacent to the oil port 111, and the blind groove 121 is arranged on the end face of the piston rod 12. Through the arrangement of the blind groove 121, the oil liquid can quickly push the piston rod 12 to move toward the lock body module 20 side after passing through the oil port 111.
[0035] In some embodiments, the opening 2131 is a vertically arranged strip-shaped groove, and the locking hook 222 can swing reciprocally along the length direction of the strip-shaped groove. The width of the strip-shaped groove is slightly larger than the width of the locking hook 222. Therefore, the strip-shaped groove can play a guiding and limiting role for the locking hook 222 to prevent the locking hook 222 from swinging back and forth when the mounting seat 221 moves along the cylinder body.
[0036] In some embodiments, a limiting block 24 is provided at the inner end of the second support plate 213, and the locking hook 222 is provided with a limiting portion. When the locking hook 222 is in the locked state, the limiting block 24 and the limiting portion are in limiting cooperation to limit the swinging of the locking hook 222.
[0037] In some embodiments, the mounting seat 221 includes a seat body 2211 and a connecting column 2212 fixed to the seat body 2211, and the locking hook 222 is rotatably mounted on the connecting column 2212 through a pin shaft 2213.
[0038] In some embodiments, the cylinder body portion 211 and the first support plates 212 and the second support plates 213 on both sides are fixed into one body by welding.
[0039] In summary, the present utility model has the following beneficial effects: The hydraulic lock for locking the cab flip of the present utility model has a simple structure, convenient assembly, reduced parts, and saves production costs and assembly costs.
[0040] The above description is only a preferred embodiment of the present utility model. Therefore, any equivalent changes or modifications made according to the structure, features, and principles described in the scope of the patent application of the present utility model are included in the scope of the patent application of the present utility model.
Claims
1. A hydraulic lock for cab tilting and locking, characterized in that: including an oil cylinder module (10), the oil cylinder module (10) includes a cylinder block (11), a piston rod (12) slidably disposed within the cylinder block (11), and a seal (13) hermetically disposed within the cylinder block (11). A first end of the cylinder block (11) is provided with an oil port (111), and a second end of the cylinder block (11) is provided with a first threaded connection portion (112); a lock body module (20), the lock body module (20) includes a sleeve (21) and a lock hook assembly (22). The lock hook assembly (22) includes a mounting seat (221) movably disposed within the sleeve (21) and a lock hook (222) rotatably connected to the mounting seat (221). The sleeve (21) includes a cylindrical body portion (211), a first support plate (212) and a second support plate (213) fixed to both sides of the cylindrical body portion (211). The first support plate (212) is disposed on a side adjacent to the cylinder block (11), and the first support plate (212) is provided with a second threaded connection portion (2121) threadedly connected to the first threaded connection portion (112). The second support plate (213) is disposed on a side away from the cylinder block (11), and a spring (23) is disposed between the second support plate (213) and the mounting seat (221). The second support plate (213) is provided with an opening (2131) for the lock hook (222) to extend out of the cylinder block (11); In the initial state, the piston rod (12) of the oil cylinder module (10) is located within the cylinder block (11), and the lock hook assembly (22) is in the original position under the action of the spring (23). At this time, the lock hook (222) is in the locked state. When the oil cylinder module (10) is supplied with oil, the piston rod (12) moves towards the sleeve (21) side and drives the lock hook assembly (22) to move towards the side of compressing the spring (23). At this time, the lock hook (222) moves towards the unlocking side.
2. The hydraulic lock for cab overturning lock according to claim 1, characterized in that: A step portion (113) is provided on a side of the cylinder block (11) corresponding to the first threaded connection portion (112). The first support plate (212) is threadedly connected to the cylinder block (11) and abuts against the step portion (113) of the cylinder block (11).
3. The hydraulic lock for cab overturning lock according to claim 2, characterized in that: A first annular groove is provided in the inner cavity of the second end of the cylinder block (11), and a dust ring (14) is disposed within the first annular groove. The inner ring of the dust ring (14) is in contact with the piston rod (12).
4. A hydraulic lock for cab overturning lock-up, according to claim 3, characterized in that: The dust ring (14) is provided with a tapered portion, and the diameter of the tapered portion contracts towards the side of the sleeve (21) and is in contact with the piston rod (12).
5. The hydraulic lock for cab tilting lock-up according to claim 4, characterized in that: A second annular groove is provided within the cylinder block (11), and the second annular groove is disposed on the side of the dust ring (14) opposite to the sleeve (21). A seal (13) in sealing cooperation with the piston rod (12) is disposed within the second annular groove.
6. A hydraulic lock for cab tilting and locking according to claim 1, characterized in that: A blind groove (121) is provided on a side of the piston rod (12) adjacent to the oil port (111), and the blind groove (121) is disposed on the end face of the piston rod (12).
7. A hydraulic lock for cab tilting and locking according to claim 1, characterized in that: The opening (2131) is a vertically disposed strip-shaped groove, and the lock hook (222) can swing reciprocally along the length direction of the strip-shaped groove.
8. A hydraulic lock for cab overturning lock, according to claim 7, characterized in that: A limiting block (24) is provided at the inner end of the second support plate (213), and the locking hook (222) is provided with a limiting portion. When the locking hook (222) is in the locked state, the limiting block (24) and the limiting portion are in limiting cooperation to limit the swinging of the locking hook (222).
9. A hydraulic lock for cab overturning and locking according to claim 1, characterized in that: The mounting seat (221) includes a seat body (2211) and a connecting column (2212) fixed to the seat body (2211), and the locking hook (222) is rotatably mounted on the connecting column (2212) through a pin shaft (2213).
10. A hydraulic lock for cab tilting and locking according to any one of claims 1-9, characterized in that: An arc portion (2221) is provided on one side of the locking hook (222) adjacent to the piston column (12). When the piston column (12) moves towards the compression spring (23), the piston column (12) abuts against the arc portion (2221) of the locking hook (222) and drives the locking hook assembly (22) to move towards the compression spring (23). The locking hook (222) swings towards the unlocking direction along the arc portion (2221) under the push of the piston column (12).