Riveting single-action type air cylinder

Abstract

The utility model discloses a riveting single-action type air cylinder which comprises a cylinder barrel, a front cover and a rear cover are arranged at the two ends of the cylinder barrel respectively, a piston cavity is formed in the cylinder barrel, a piston and a piston rod are movably connected in the piston cavity, the piston cavity is divided into a rod cavity and a rodless cavity by the piston, and the front cover and the rear cover are fixed to the cylinder barrel in a pressing rivet mode. An air inlet communicated with the rod cavity is formed in the front cover, an exhaust hole communicated with the rodless cavity is formed in the rear cover, one end of the piston rod is fixedly connected with the piston, the joint of the piston and the piston rod is coated with anaerobic adhesive, the other end of the piston rod penetrates through the front cover, extends out of the cylinder barrel and is fixedly connected with a spring seat, and a spring is arranged between the spring seat and the front cover in an abutting mode. The spring has the movement trend of enabling the piston rod to stretch out, separation of the vehicle head and the compartment is pneumatically controlled, operation is easy and fast, efficiency is high, the front cover and the rear cover are fixed to the cylinder barrel in a pressing rivet mode, better looseness prevention and vibration resistance are achieved, and connection durability and reliability are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinders, and particularly relates to a riveting single-acting cylinder. Background Art

[0002] When it is necessary to separate the front of the vehicle and the carriage, the current common practice is to require the driver to get out of the vehicle in person and then unlock it through a series of cumbersome mechanical operations. This traditional processing method not only has extremely low work efficiency, but also places relatively high requirements on the driver's physical fitness. Since it is necessary to directly operate physically to unlock the connecting device between the front of the vehicle and the carriage, this often requires the driver to have a certain amount of physical strength and endurance. The operation process is time-consuming and laborious. Especially in harsh environments, such as extreme weather conditions like rain, snow, high temperature or low temperature, the difficulty and intensity of this manual operation will further increase, which not only affects the work efficiency, but also may cause potential damage to the driver's physical health. Therefore, it is necessary to make improvements. Content of the Utility Model

[0003] The purpose of the utility model is to provide a riveting single-acting cylinder for controlling the unlocking of the connecting device between the front of the vehicle and the carriage in view of the defects and deficiencies of the prior art. The structure is simple and reasonable, the operation is convenient and fast. The driver does not need to get out of the vehicle, and the separation of the front of the vehicle and the carriage is realized by pneumatic control, with high efficiency.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A riveting single-acting cylinder of the utility model includes a cylinder barrel. The two ends of the cylinder barrel are respectively provided with a front cover and a rear cover. A piston cavity is arranged in the cylinder barrel. A piston and a piston rod are movably connected in the piston cavity. The piston divides the piston cavity into a rod chamber and a rodless chamber. The front cover and the rear cover are respectively fixed to the cylinder barrel by riveting. An air inlet hole communicated with the rod chamber is arranged on the front cover, and an exhaust hole communicated with the rodless chamber is arranged on the rear cover. One end of the piston rod is fixedly connected with the piston, and the piston is threadedly connected with the piston rod. The other end of the piston rod passes through the front cover and extends out of the cylinder barrel and is fixedly connected with a spring seat. A spring is arranged between the spring seat and the front cover, and the spring has a movement tendency to make the piston rod extend.

[0006] Further, a first U-shaped bracket is welded on the rear cover.

[0007] Further, the rear cover is threadedly connected with the first U-shaped bracket, and after the threaded connection, the rear cover and the first U-shaped bracket form a welded structure through welding.

[0008] Further, a second U-shaped bracket is welded to the end of the piston rod extending out of the cylinder barrel.

[0009] Further, the piston rod is threadedly connected to the second U-shaped bracket, and after the threaded connection, the piston rod and the second U-shaped bracket form a welded structure through welding.

[0010] Further, the piston and the piston rod are fixedly connected by a hexagon lock nut.

[0011] Further, a C-ring and a wear-resistant ring are provided between the piston rod and the cylinder barrel.

[0012] Further, a step portion for cooperating with the spring is provided on the front cover.

[0013] Further, the outer edge of the spring seat is bent toward the side close to the spring to form a limiting portion for cooperating with the spring.

[0014] Further, a dust-proof ring is provided between the front cover and the piston rod.

[0015] The beneficial effects of the present utility model are as follows: The riveting single-acting cylinder described in the present utility model is usually used in automobiles to control the connecting devices between the vehicle head and the carriage, such as hooks, buckles, cards, etc. When it is necessary to separate the vehicle head from the carriage, the traditional treatment method usually requires the driver to get out of the vehicle in person and unlock it through manual mechanical operation. This method is not only inefficient, but also the driver needs to bear a large labor intensity. Now, through pneumatic control for unlocking, the driver only needs to operate through a button in the cab, and the system will control the intake hole to intake air. The piston in the cylinder will be pushed, and the piston rod will act on the connecting device to unlock the connecting device through pneumatic control, realizing the separation of the vehicle head from the carriage. The operation is simple and fast, and the efficiency is high.

[0016] The front cover and the rear cover are respectively fixed to the cylinder barrel by press riveting, having high tensile strength and shear strength, and being suitable for connections that bear large loads. This connection method has better anti-loosening property and anti-vibration performance compared with the conventional threaded connection method, and can reduce the influence of mechanical vibration on the connection part. During the driving of the vehicle, the bumps and vibrations caused by the uneven road surface are inevitable. If these vibrations act on the threaded connection part for a long time, it will accelerate the wear of the thread and eventually lead to connection loosening. By adopting the press riveting fixing method, this influence can be greatly reduced, ensuring the durability and reliability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic cross-sectional structure diagram of the present utility model;

[0018] Figure 2 is Figure 1 the enlarged structure diagram of part A in

[0019] Figure 3 is a schematic structure diagram of the present utility model.

[0020] Figures 1-3 Among them: 1. Cylinder barrel; 2. Front cover; 21. Air inlet hole; 22. Step portion; 23. Dust-proof ring; 24. Retaining ring for V-shaped hole; 25. Retaining ring; 26. Bearing; 27. O-ring; 3. Rear cover; 31. Exhaust hole; 32. First U-shaped bracket; 4. Piston; 41. C-ring; 42. Wear-resistant ring; 5. Piston rod; 51. Spring seat; 511. Limit portion; 52. Second U-shaped bracket; 6. Rodless cavity; 7. Spring; 8. Hexagon lock nut. Specific implementation mode

[0021] The present utility model will be further described below with reference to the accompanying drawings.

[0022] As Figures 1-3 shown, a riveting single-acting cylinder includes a cylinder barrel 1. Front covers 2 and rear covers 3 are respectively arranged at both ends of the cylinder barrel 1. A piston cavity is arranged inside the cylinder barrel 1. A piston 4 and a piston rod 5 are movably connected inside the piston cavity. The piston 4 divides the piston cavity into a rod cavity and a rodless cavity 6. The front cover 2 and the rear cover 3 are respectively riveted and fixed to the cylinder barrel 1, having high tensile strength and shear strength, being suitable for connections bearing large loads. This connection method has better anti-loosening property and anti-vibration performance compared with the conventional threaded connection method, and can reduce the influence of mechanical vibration on the connection part. During the driving of an automobile, the bumps and vibrations caused by the uneven road surface are inevitable. If these vibrations act on the threaded connection part for a long time, it will accelerate the wear of the thread and eventually lead to connection loosening. By adopting the riveting and fixing method, this influence can be greatly reduced, ensuring the durability and reliability of the connection. An air inlet hole 21 communicating with the rod cavity is arranged on the front cover 2. Air is introduced into the rod cavity through the air inlet hole 21. An exhaust hole 31 communicating with the rodless cavity 6 is arranged on the rear cover 3. Specifically, the exhaust hole 31 is axially arranged at the center of the rear cover 3, and the exhaust is smoother. One end of the piston rod 5 is fixedly connected to the piston 4. The piston 4 is threadedly connected to the piston rod 5, and anaerobic glue is applied at the threaded connection part, so that the connection relationship is more firm and not easy to loosen. The other end of the piston rod 5 passes through the front cover 2 and extends outside the cylinder barrel 1 and is fixedly connected with a spring seat 51. A spring 7 is arranged between the spring seat 51 and the front cover 2. The spring seat 51 plays a role in supporting the spring 7. The spring 7 has a movement tendency to make the piston rod 5 extend. The spring 7 applies a preset force to the piston rod 5. When the air inlet hole 21 does not admit air, the spring 7 can make the piston rod 5 maintain the extended state.

[0023] On a vehicle, a single-acting cylinder is used to control the connecting devices between the vehicle head and the carriage, such as hooks, buckles, cards, etc. When it is necessary to separate the vehicle head from the carriage, the traditional treatment method usually requires the driver to get out of the vehicle in person and unlock it through manual mechanical operation. This method is not only inefficient, but also the driver needs to bear a relatively large labor intensity. Now, unlocking is achieved through pneumatic control. The driver only needs to operate through buttons in the cockpit. The system will control the intake hole 21 to intake air, and the piston 4 in the cylinder will be pushed. The piston rod 5 acts on the connecting device, and the connecting device is unlocked through pneumatic control to realize the separation of the vehicle head and the carriage. The operation is simple, fast, and efficient.

[0024] The working principle of the present utility model is as follows: Under normal conditions, the piston rod 5 maintains an extended state under the elastic action of the spring 7. When the intake hole 21 intakes air into the rod chamber, it pushes the piston 4 to move, thereby controlling the piston rod 5 to retract against the elastic force of the spring 7. The excess gas in the rodless chamber 6 is discharged through the exhaust hole 31. When the intake hole 21 stops intake, the piston rod 5 resets under the elastic force of the spring 7, and the excess gas in the rod chamber is discharged through the intake hole 21.

[0025] Preferably, in this embodiment, refer to Figure 3 , a first U-shaped bracket 32 is welded on the rear cover 3 for connecting other components on the vehicle. The first U-shaped bracket 32 is welded on the rear cover 3, and then the first U-shaped bracket 32 is connected to the adjacent components through bolts or other connecting pieces, thereby realizing the tight connection of the entire device. Preferably, in this embodiment, the rear cover 3 is threadedly connected to the first U-shaped bracket 32, and anaerobic glue is applied to the threaded connection. During specific operation, first apply anaerobic glue to the threaded connection between the rear cover 3 and the first U-shaped bracket 32, tighten the two, and then form a welded structure through welding, so that the connection relationship between the rear cover 3 and the first U-shaped bracket 32 is more reliable and can effectively prevent loosening and other phenomena during use.

[0026] Preferably, in this embodiment, refer to Figure 3 , a second U-shaped bracket 52 is welded to the end of the piston rod 5 extending out of the cylinder barrel 1 for connecting the connecting device between the vehicle head and the carriage. The second U-shaped bracket 52 is welded on the piston rod 5, and then the second U-shaped bracket 52 is connected to the connecting device through bolts or other connecting pieces, thereby realizing the tight connection of the entire device. Preferably, in this embodiment, the piston rod 5 is threadedly connected to the second U-shaped bracket 52, and anaerobic glue is applied to the threaded connection. During specific operation, first apply anaerobic glue to the threaded connection between the piston rod 5 and the second U-shaped bracket 52, tighten the two, and then form a welded structure through welding, so that the connection relationship between the piston rod 5 and the second U-shaped bracket 52 is more reliable and can effectively prevent loosening and other phenomena during use.

[0027] Preferably, in this embodiment, the piston 4 and the piston rod 5 are fixedly connected by a hexagon lock nut 8. Preferably, in this embodiment, anaerobic glue is applied to the threaded connection between the piston rod 5 and the hexagon lock nut 8, so that the connection relationship is more reliable and can effectively prevent loosening and other phenomena during use.

[0028] Preferably, in this embodiment, a stepped portion 22 for cooperating with the spring 7 is provided on the front cover 2 to improve the stability of the spring 7 during movement. Preferably, in this embodiment, the outer edge of the spring seat 51 is bent towards the side close to the spring 7 to form a limiting portion 511 for cooperating with the spring 7, which can prevent the spring 7 from being displaced unexpectedly and affecting the use.

[0029] Preferably, in this embodiment, referring to Figure 2 , a dust-proof ring 23 is provided between the front cover 2 and the piston rod 5 to effectively prevent dust and other sundries from entering and affecting the use. A V-ring 24, a retaining ring 25 and a bearing 26 are sequentially arranged between the front cover 2 and the piston rod 5 from front to back. The V-ring 24 plays a role in guiding and limiting the retaining ring 25 to prevent the retaining ring 25 from detaching from the front cover 2. The retaining ring 25 further improves the sealing performance and prevents impurities from entering. The bearing 26 can reduce the friction of the piston rod 5 during movement and extend the service life of the piston rod 5.

[0030] Preferably, in this embodiment, referring to Figure 2 , a C-ring 41 and a wear-resistant ring 42 are provided between the piston 4 and the cylinder barrel 1. The wear-resistant ring can reduce the wear of the piston 4, and the C-ring 41 can improve the sealing performance between the piston 4 and the cylinder barrel 1. An O-ring 27 is provided between the front cover 2 and the cylinder barrel 1 to improve the sealing performance between the front cover 2 and the cylinder barrel 1.

[0031] The above is only the preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made according to the structure, features and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A riveted single-acting cylinder, comprising a cylinder barrel (1), a front cover (2) and a rear cover (3) being respectively provided at both ends of the cylinder barrel (1), a piston chamber being provided in the cylinder barrel (1), a piston (4) and a piston rod (5) being movably connected in the piston chamber, the piston (4) dividing the piston chamber into a rod chamber and a rodless chamber (6), characterized in that: The front cover (2) and the rear cover (3) are fixed to the cylinder barrel (1) by riveting, respectively; the front cover (2) is provided with an air inlet (21) communicating with the rod chamber, and the rear cover (3) is provided with an air outlet (31) communicating with the rodless chamber (6); one end of the piston rod (5) is fixedly connected to the piston (4), and the piston (4) is threadedly connected to the piston rod (5); the other end of the piston rod (5) passes through the front cover (2) and extends out of the cylinder barrel (1) and is fixedly connected to a spring seat (51); a spring (7) is arranged between the spring seat (51) and the front cover (2), and the spring (7) has a movement tendency to cause the piston rod (5) to extend.

2. A riveting single-acting cylinder according to claim 1, characterized in that: A first U-shaped bracket (32) is welded to the rear cover (3).

3. A riveting single-acting cylinder according to claim 2, characterized in that: The rear cover (3) is threadedly connected to the first U-shaped bracket (32); the threadedly connected rear cover (3) and the first U-shaped bracket (32) are welded to form a welded structure.

4. A riveting single-acting cylinder according to claim 1, characterized in that: A second U-shaped bracket (52) is welded to one end of the piston rod (5) extending outside the cylinder barrel (1).

5. A riveting single-acting cylinder according to claim 4, characterized in that: The piston rod (5) is threadedly connected to the second U-shaped bracket (52); the threadedly connected piston rod (5) and the second U-shaped bracket (52) are welded to form a welded structure.

6. A riveting single-acting cylinder according to claim 1, characterized in that: The piston (4) and the piston rod (5) are fixedly connected via a hexagonal locking nut (8).

7. A riveting single-acting cylinder according to claim 1, characterized in that: A C-shaped ring (41) and a wear-resistant ring (42) are disposed between the piston rod (5) and the cylinder barrel (1).

8. A riveting single-acting cylinder according to claim 1, characterized in that: The front cover (2) is provided with a step portion (22) that cooperates with the spring (7).

9. A riveting single-acting cylinder according to claim 1, characterized in that: The outer edge of the spring seat (51) is bent towards a side close to the spring (7) to form a limiting portion (511) that cooperates with the spring (7).

10. A riveting single-acting cylinder according to claim 1, characterized in that: A dust ring (23) is provided between the front cover (2) and the piston rod (5).

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