Self-locking mechanism with pneumatic balance function
By introducing a one-way throttle valve and switch assembly into the self-locking structure, the stable balance of the air pressure inside the cylinder is controlled, and the problem of air pressure in the existing self-locking structure is solved, and the effective control and operation safety of the self-locking structure is achieved.
Patent Information
- Application Number
- CN202420847153.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-04-23
AI Technical Summary
When the existing self-locking structure is output through the cylinder, the internal air pressure cannot reach an effective stable equilibrium state, resulting in the self-locking structure being unable to be effectively controlled, and there is a risk of the fixture sliding and falling off.
A self-locking mechanism with pneumatic balance function is designed. By installing a one-way throttle valve on the outside of the cylinder and controlling the opening and closing of the mechanical valve with the switch assembly, a stable balance of the internal air pressure of the cylinder is achieved.
By controlling the air pressure by sealing gas, the movement problem of moving parts is solved, while ensuring the operation safety of the operator, and achieving effective control of the self-locking structure.
Smart Images
Figure CN222818228U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automated welding, in particular to a self-locking mechanism with a pneumatic balancing function. Background Art
[0002] At present, in the welding fixtures of domestic automobile exhaust systems, many parts with angled movement (especially vertical moving parts) need to be stopped at any position at any time and cannot slide down or fall off, which poses a risk of injury to operators. For this reason, the self-locking structure of the fixture is used in the welding process to ensure that the parts will not fall off when the fixture fixes the parts.
[0003] Most existing self-locking structures output directly through the cylinder, but this method will cause the internal air pressure of the cylinder to fail to reach an effective stable equilibrium state when the cylinder is outputting, resulting in the self-locking structure being unable to be effectively controlled. For this reason, a self-locking mechanism with a pneumatic balancing function is proposed. Utility Model Content
[0004] In order to make up for the above deficiencies, the utility model provides a self-locking mechanism with a pneumatic balancing function, aiming to improve the problem that the self-locking structure in the prior art is mostly directly output through the cylinder, but this method will cause the air pressure inside the cylinder to fail to reach an effective stable balance state when the cylinder is outputting.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a self-locking mechanism with a pneumatic balancing function, comprising a cylinder and a base plate, the bottom of the cylinder is fixedly connected to the top of the base plate, and one-way throttle valves are installed on both sides of the outside of the cylinder, the top edge of the base plate is fixedly connected to a support connecting plate, the top of the support connecting plate is rotatably connected to a straight connecting plate, the middle of the straight connecting plate is rotatably connected to a support column one, the outer periphery of the support column one is fixedly connected to an L-shaped connecting plate, the top of the L-shaped connecting plate is rotatably connected to a cylinder connecting block, the bottom of the cylinder connecting block is arranged on the top of the cylinder, the outside of the straight connecting plate is fixedly connected to a handle connecting plate, one side of the bottom of the handle connecting plate is fixedly connected to a handle, and the other side of the bottom of the handle connecting plate is fixedly connected to a connecting block, the side of the connecting block away from the handle connecting plate is fixedly connected to a mechanical valve, air pipe joints are installed on both sides of the top of the mechanical valve, and a switch assembly is arranged inside the handle.
[0006] As a further description of the above technical solution:
[0007] The straight connecting plate is rotatably connected to a second supporting column at one side away from the supporting connecting plate.
[0008] As a further description of the above technical solution:
[0009] The switch assembly comprises a guide sleeve, the outer periphery of which is fixedly connected to the inside of the handle, guide limit blocks are threadedly connected to both ends of the guide sleeve, a clamping shaft is slidably connected to the inside of the guide sleeve, and a spring is provided on the outer periphery of the clamping shaft.
[0010] As a further description of the above technical solution:
[0011] The air pipe joint and the one-way throttle valve are communicated with each other through a pipeline.
[0012] As a further description of the above technical solution:
[0013] The two sides of the outer periphery of the clamping shaft are slidably connected between the insides of the two guide limit blocks.
[0014] As a further description of the above technical solution:
[0015] One end of the clamping shaft passes through the handle connecting plate and abuts against the outer side of the mechanical valve, and the other end of the clamping shaft passes through the guide limit block and is fixedly connected with a ventilation button.
[0016] As a further description of the above technical solution:
[0017] One end of the spring is fixedly connected to the middle part of the clamping shaft, and the other end of the spring is fixedly connected to a side of one of the guide limit blocks away from the handle connecting plate.
[0018] The utility model has the following beneficial effects:
[0019] 1. In the present invention, the movement of moving parts is controlled by controlling the air pressure with sealed gas, while ensuring the safety of operators. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 A three-dimensional diagram of a self-locking mechanism with a pneumatic balancing function proposed by the utility model;
[0021] Figure 2 This is a cross-sectional view of the handle portion of a self-locking mechanism with a pneumatic balancing function proposed by the utility model.
[0022] Legend:
[0023] 1. Cylinder; 2. One-way throttle valve; 3. Bottom plate; 4. Support connecting plate; 5. Straight connecting plate; 6. L-shaped connecting plate; 7. Cylinder connecting block; 8. Support column one; 9. Support column two; 10. Handle connecting plate; 11. Handle; 12. Ventilation button; 13. Connecting block; 14. Guide sleeve; 15. Clamping shaft; 16. Guide limit block; 17. Spring; 18. Mechanical valve; 19. Air pipe joint. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] Reference Figure 1 The utility model provides an embodiment: a self-locking mechanism with a pneumatic balancing function, including a cylinder 1 and a base plate 3. The bottom of the base plate 3 can be fixed to a fixture by a bolt structure or welding, and then the self-locking structure is installed and fixed. The bottom of the cylinder 1 is fixedly connected to the top of the base plate 3. Both sides of the outside of the cylinder 1 are installed with a one-way throttle valve 2. The one-way throttle valve 2 can control the direction of the air pressure entering the cylinder 1, so as to realize the conversion and stabilization of the air pressure inside the cylinder 1. A supporting connecting plate 4 is fixedly connected to the top edge of the bottom plate 3, a straight connecting plate 5 is rotatably connected to the top of the supporting connecting plate 4, a supporting column 8 is rotatably connected to the middle of the straight connecting plate 5, an L-shaped connecting plate 6 is fixedly connected to the outer periphery of the supporting column 8, a cylinder connecting block 7 is rotatably connected to the top of the L-shaped connecting plate 6, the bottom of the cylinder connecting block 7 is arranged on the top of the cylinder 1, the bottom of the cylinder connecting block 7 is connected to the bottom end of the telescopic connecting rod inside the cylinder 1, so that when the inside of the cylinder 1 is in a ventilated state, the cylinder 1 can be conveniently driven to perform telescopic activities by moving the cylinder connecting block 7 up and down, and when the air circuit is closed, a seal is formed inside the cylinder 1 to prevent the telescopic connecting rod inside the cylinder 1 from falling off.
[0026] Reference Figure 1, the outside of the straight connecting plate 5 is fixedly connected with a handle connecting plate 10. By operating the handle connecting plate 10, the straight connecting plate 5 can be lifted and rotated along the top of the supporting connecting plate 4, so that the connecting rod inside the cylinder 1 can be extended or retracted with the cooperation of the L-shaped connecting plate 6 and the cylinder connecting block 7. A handle 11 is fixedly connected to one side of the bottom of the handle connecting plate 10, and a connecting block 13 is fixedly connected to the other side of the bottom of the handle connecting plate 10. A ventilation button 12 is installed on the side of the handle 11 away from the handle connecting plate 10, and a mechanical valve 18 is fixedly connected to the side of the connecting block 13 away from the handle connecting plate 10. Both sides of the top of the mechanical valve 18 are installed with air pipe joints 19, and a switch assembly is arranged inside the handle 11. The mechanical valve 18 can be opened and closed freely through the switch assembly, and then the opening and closing control of the air pipe joint 19 is realized, and the air pressure inside the cylinder 1 is further controlled. The telescopic operation of the cylinder 1 is realized, and the stability of the air pressure inside the cylinder 1 can be effectively guaranteed. The straight connecting plate 5 is rotatably connected to a supporting column 2 9 at one side away from the supporting connecting plate 4, and the stability of the connection of the straight connecting plate 5 can be ensured by the supporting column 2 9. The air pipe joint 19 and the one-way throttle valve 2 are connected through a pipeline. The opening and closing state of the air pipe joint 19 can directly control the air pressure state inside the cylinder 1, thereby realizing the telescopic movement of the cylinder 1, and at the same time, it can ensure the stability of the air pressure inside the cylinder 1 after it is increased or decreased, and realize effective self-locking.
[0027] Reference Figure 1 - Figure 2The switch assembly includes a guide sleeve 14, the outer periphery of which is fixedly connected to the inside of the handle 11, and both ends of the guide sleeve 14 are threadedly connected with guide limit blocks 16, and a clamping shaft 15 is slidably connected inside the guide sleeve 14, and a spring 17 is sleeved on the outer periphery of the clamping shaft 15. The two sides of the outer periphery of the clamping shaft 15 are slidably connected between the insides of the two guide limit blocks 16. Continuously press the ventilation button 12, and the clamping shaft 15 will move and compress the spring 17 through the transmission of the clamping shaft 15. At the same time, the clamping shaft 15 will also contact the switch key on the mechanical valve 18 and open the mechanical valve 18. Control the mechanical valve 18 to change the air path to ventilate the trachea. Release the ventilation button 12, the spring 17 will reset and push the clamping shaft 15 to reset and move, so that the clamping shaft 15 is separated from the switch key of the mechanical valve 18 under the action of the spring 17, the mechanical valve 18 returns to the initial state, the air path returns to a sealed state, and the extension and retraction of the connecting rod of the cylinder 1 are effectively controlled by the air pressure in the cylinder body. The end of the clamping shaft 15 close to the handle connecting plate 10 passes through the handle connecting plate 10 and abuts against the outside of the mechanical valve 18, so that when the clamping shaft 15 is pressed and moved, the mechanical valve 18 can be opened, thereby controlling the opening and closing of the air pipe joint 19. One end of the spring 17 is fixedly connected to the middle of the clamping shaft 15, and the other end of the spring 17 is fixedly connected to the side of one of the guide limit blocks 16 away from the handle connecting plate 10. The spring 17 can ensure that when the ventilation button 12 is not subjected to force, the clamping shaft 15 will not squeeze the opening key of the mechanical valve 18, so that the mechanical valve 18 is closed, the air path is in a sealed state, and then the inside of the cylinder 1 is in a sealed state, preventing the piston inside the cylinder 1 from moving, and realizing the self-locking function.
[0028] Working principle: Press the ventilation button 12 continuously, and the compression shaft 15 will move and compress the spring 17 through the transmission of the clamping shaft 15. At the same time, the clamping shaft 15 will also contact the switch key on the mechanical valve 18 and open the mechanical valve 18. Control the mechanical valve 18 to change the air path to ventilate the trachea. At this time, the extension and retraction movement of the connecting rod of the cylinder 1 can be operated by the handle 11. When the handle 11 is lifted upward and the bottom plate 3 and the clamp are fixed, the handle connecting plate 10 will rotate upward along the top of the supporting connecting plate 4, and will drive the support column 18 and the L-shaped connecting plate 6 to move upward. At this time, the L-shaped connecting plate 6 will rotate counterclockwise while pulling up the cylinder connecting block 7, and then the cylinder connecting block 7 will move up and pull the connecting rod inside the cylinder 1 upward and retract. At the same time, when the ventilation button 12 is pulled downward, the connecting rod of the cylinder 1 will be driven to extend from the inside of the cylinder 1 through the handle connecting plate 10. When the ventilation button 12 is released, the spring 17 will reset and push the clamping shaft 15 to reset and move, so that the clamping shaft 15 is separated from the switch of the mechanical valve 18 under the action of the spring 17, the mechanical valve 18 returns to its initial state, the air path returns to a sealed state, and the extension and retraction of the connecting rod of the cylinder 1 are effectively controlled by the air pressure in the cylinder body.
[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A self-locking mechanism with a pneumatic balancing function, comprising a cylinder (1) and a base plate (3), characterized in that: The bottom of the cylinder (1) is fixedly connected to the top of the base plate (3), one-way throttle valves (2) are installed on both sides of the outside of the cylinder (1), the top edge of the base plate (3) is fixedly connected to a support connecting plate (4), the top of the support connecting plate (4) is rotatably connected to a straight connecting plate (5), the middle of the straight connecting plate (5) is rotatably connected to a support column (8), the outer periphery of the support column (8) is fixedly connected to an L-shaped connecting plate (6), the top of the L-shaped connecting plate (6) is rotatably connected to a cylinder connecting block (7), and the cylinder connecting block ( 7) The bottom is arranged at the top of the cylinder (1), the outside of the straight connection plate (5) is fixedly connected to a handle connection plate (10), one side of the bottom of the handle connection plate (10) is fixedly connected to a handle (11), the other side of the bottom of the handle connection plate (10) is fixedly connected to a connection block (13), the side of the connection block (13) away from the handle connection plate (10) is fixedly connected to a mechanical valve (18), both sides of the top of the mechanical valve (18) are installed with air pipe joints (19), and a switch assembly is arranged inside the handle (11).
2. A self-locking mechanism with pneumatic balancing function according to claim 1, characterized in that: The side of the straight connecting plate (5) away from the supporting connecting plate (4) is rotatably connected to a second supporting column (9).
3. The self-locking mechanism with pneumatic balancing function according to claim 1, characterized in that: The switch assembly comprises a guide sleeve (14), the outer periphery of the guide sleeve (14) is fixedly connected to the inside of the handle (11), both ends of the guide sleeve (14) are threadedly connected to guide limit blocks (16), the inside of the guide sleeve (14) is slidably connected to a clamping shaft (15), and the outer periphery of the clamping shaft (15) is provided with a spring (17).
4. The self-locking mechanism with pneumatic balancing function according to claim 1, characterized in that: The air pipe joint (19) and the one-way throttle valve (2) are connected via a pipeline.
5. The self-locking mechanism with pneumatic balancing function according to claim 3, characterized in that: Both sides of the outer periphery of the clamping shaft (15) are slidably connected between the insides of the two guide limit blocks (16).
6. The self-locking mechanism with pneumatic balancing function according to claim 3, characterized in that: One end of the clamping shaft (15) passes through the handle connecting plate (10) and abuts against the outside of the mechanical valve (18), and the other end of the clamping shaft (15) passes through the guide limit block (16) and is fixedly connected to a ventilation button (12).
7. The self-locking mechanism with pneumatic balancing function according to claim 3, characterized in that: One end of the spring (17) is fixedly connected to the middle of the clamping shaft (15), and the other end of the spring (17) is fixedly connected to a side of one of the guide limit blocks (16) away from the handle connecting plate (10).