Hydraulic oil cylinder with axial sealing device

Abstract

The utility model relates to the field of hydraulic oil cylinders, and discloses a hydraulic oil cylinder with an axial sealing device, the hydraulic oil cylinder comprises a connecting cylinder and a fixing frame, a sliding rod is slidably mounted on the inner wall of the connecting cylinder, the size specification of the surface of the sliding rod is matched with the size specification of the inner wall of the connecting cylinder, and one end of the sliding rod is fixedly connected with a mounting block; a sliding frame is slidably mounted on the inner wall of the fixing frame, the size specification of the surface of the sliding frame is in interference fit with the size specification of the inner wall of the fixing frame, and a sealing ring is clamped to the surface of the sliding frame; the fixing frame is installed on the surface of the connecting cylinder, the inner wall of the fixing frame is slidably connected with a sliding frame, one end of the sliding frame is connected with a sealing ring made of rubber, and the inner wall of the sealing ring is connected with the surface of the sliding rod, so that the joint of the sliding rod and the connecting cylinder is shielded by means of the sealing ring; and the loose part of the sealing ring is tightened by moving the sliding frame, so that the situation that a gap is formed between the sliding rod and the connecting cylinder due to looseness of the sealing ring is avoided.

Description

Technical Field

[0001] The present application relates to the field of hydraulic cylinders, and in particular to a hydraulic cylinder with an axial sealing device. Background Art

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy. It is mainly used to achieve linear reciprocating motion or swinging motion. It has a simple structure, reliable operation, and can achieve smooth motion. Therefore, it is widely used in the hydraulic systems of various machines. The hydraulic cylinder consists of a cylinder barrel and cylinder head, a piston and piston rod, a sealing device, a buffer device and an exhaust device. The buffer device and the exhaust device depend on the specific application scenario, and other devices are indispensable. Hydraulic cylinders are widely used in industry. When the hydraulic cylinder is in use, after the connecting tube is installed and stabilized, a sliding rod is slidably installed on the inner wall of the connecting tube. One end of the sliding rod is installed at the position where the mounting block needs to be pushed, and the sliding of the sliding rod is controlled by controlling the air pressure in the connecting tube.

[0003] Regarding the above-mentioned related technologies, the inventor believes that conventional hydraulic cylinders often use rubber sealing rings to cover the joints inside the hydraulic cylinders. Conventional rubber materials are prone to loosening after long-term use, resulting in air leakage on the inner wall of the hydraulic cylinder, causing inconvenience when using the hydraulic cylinder.

[0004] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application. Therefore, it may contain information that does not constitute the prior art known to ordinary technicians in this field. Summary of the Invention

[0005] In order to solve the problem that the sealing ring in the conventional hydraulic cylinder becomes loose after long-term use, the present application provides a hydraulic cylinder with an axial sealing device.

[0006] The present application provides a hydraulic cylinder with an axial sealing device adopting the following technical solution:

[0007] The cam is secured to the inner wall of the cylinder and is secured to the cam face with an angular channel that extends outward from the center of the cylinder to allow the cylinder to move forward along the axis of the cylinder being deflected from the center of the cylinder. The cam is secured to the inner wall of the cylinder by a channel that extends outward from the center of the cylinder to allow the cylinder to move forward along the axis of the cylinder being deflected from the center of the cylinder.

[0008] Preferably, two slide rails are slidably mounted on the inner wall of the sliding frame, the cross section of the slide rail is T-shaped, and one end of the slide rail is fixedly connected to the inner wall of the fixed frame, and the two slide rails are symmetrically distributed with the sliding frame as the axis.

[0009] Preferably, a threaded rod is rotatably mounted on one end of the sliding frame, the surface of the threaded rod is threadedly connected to the inner wall of the fixed frame, and a rotating block is fixedly mounted on one end of the threaded rod, and the center of the rotating block is on the same straight line as the center of the threaded rod.

[0010] Preferably, the surface of the sealing ring is rotatably connected to two limiting rollers, the two limiting rollers are symmetrically distributed with the sealing ring as the axis, and a rotating frame is rotatably installed on the surface of the limiting roller, and the cross-section of the rotating frame is a "V"-shaped structure.

[0011] Preferably, surfaces of the two rotating frames are fixedly connected with fixed blocks, and a spring is fixedly installed between the two fixed blocks.

[0012] Preferably, one end of the rotating frame is rotatably connected to a slider, and a connecting block is slidably installed on the inner wall of the slider. The cross section of the connecting block is a "T"-shaped structure, and one end of the connecting block is fixedly connected to the surface of the sliding frame.

[0013] Preferably, a limiting block is fixedly mounted on one end of the connecting block, and the size of the surface of the limiting block is larger than the size of one end of the connecting block.

[0014] In summary, this application has the following beneficial technical effects:

[0015] The cam is fixedly mounted on the frame, and one end of the cam is fixedly mounted on the frame, whereby the cam is secured to the frame by means of a screw thread insert and the cam is secured to the frame by means of a screw thread insert.

[0016] One end of the connecting block is provided with a limiting block, so as to limit the connection position of the slider with the limiting block, thereby preventing the slider from separating from the connecting block; effectively improving the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a hydraulic cylinder with an axial sealing device according to an embodiment of the application;

[0018] Figure 2 This is a schematic diagram of the fixed frame structure of the application embodiment;

[0019] Figure 3 is a side structural schematic diagram of an embodiment of the application;

[0020] Figure 4 It is a structural diagram of location A of the application embodiment.

[0021] Explanation of the accompanying drawings: 1. Connecting cylinder; 2. Slide rod; 3. Mounting block; 4. Fixed frame; 5. Slide rail; 6. Sliding frame; 7. Sealing ring; 8. Threaded rod; 9. Rotating block; 10. Limiting roller; 11. Rotating frame; 12. Fixed block; 13. Spring; 14. Slider; 15. Connecting block; 16. Limiting block. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1 —4 Provide further details of this application.

[0023] The embodiment of the present application discloses a hydraulic cylinder with an axial sealing device, referring to Figure 1 - Figure 2, including the connecting barrel 1, in use, the inner wall of the connecting barrel 1 is slidably installed with the slide rod 2, one end of the slide rod 2 is installed at the position to be pushed by the mounting block 3, the slide rod 2 is controlled to slide by controlling the air pressure in the connecting barrel 1, the fixed frame 4 is installed on the surface of the connecting barrel 1, the inner wall of the fixed frame 4 is slidably connected with the sliding frame 6, one end of the sliding frame 6 is connected with the sealing ring 7 made of rubber, the inner wall of the sealing ring 7 is connected with the surface of the slide rod 2, the connecting position of the slide rod 2 and the connecting barrel 1 is shielded by the sealing ring 7, and the loosened part of the sealing ring 7 is tightened by moving the sliding frame 6, so that the sealing effect of the sealing ring 7 is effectively improved, and the gap between the slide rod 2 and the connecting barrel 1 caused by loosening of the sealing ring 7 is avoided.

[0024] With reference to Figure 2 , the inner wall of the sliding frame 6 is slidably installed with the slide rail 5, one end of the slide rail 5 is fixedly connected with the inner wall of the fixed frame 4, the moving position of the sliding frame 6 is limited by the slide rail 5, so that the tightening effect of the sealing ring 7 is not affected by the deviation of the sliding frame 6, one end of the sliding frame 6 is rotatably connected with the threaded rod 8, one end of the threaded rod 8 is fixedly installed with the rotating block 9, and the surface of the threaded rod 8 is threadedly connected with the inner wall of the fixed frame 4, the position of the sliding frame 6 is adjusted and fixed by the threaded rod 8.

[0025] With reference to Figure 2 - Figure 4 The limiting roller 10 is installed at both ends of the sealing ring 7, one end of the limiting roller 10 is installed with the rotating frame 11, the limiting roller 10 is connected with the surface of the sealing ring 7 by the rotating frame 11, the surface of the sealing ring 7 is shielded by the limiting roller 10 to prevent the sealing ring 7 from being loosened by the sliding frame 6, the surface of the rotating frame 11 is installed with the fixed block 12, the spring 13 is installed between the two fixed blocks 12, the rotating frame 11 is pulled by the spring 13, one end of the limiting roller 10 of the rotating frame 11 is connected with the surface of the sealing ring 7, the shielding effect of the limiting roller 10 on the sealing ring 7 is effectively improved, one end of the rotating frame 11 is rotatably connected with the sliding block 14, the inner wall of the sliding block 14 is slidably connected with the connecting block 15, one end of the connecting block 15 is connected with the surface of the sliding frame 6, the rotating frame 11 at one end of the sliding block 14 is installed on the surface of the sliding frame 6 by the connecting block 15, and the position of the rotating frame 11 is limited, so that the deviation of the rotating frame 11 does not affect the extrusion effect of the limiting roller 10, one end of the connecting block 15 is installed with the limiting block 16, the connecting position of the sliding block 14 is limited by the limiting block 16, so that the sliding block 14 and the connecting block 15 are prevented from being separated.

[0026] The embodiment of the present application is a hydraulic cylinder with an axial sealing device. The implementation principle of the hydraulic oil cylinder of the embodiment of the present application is as follows: by installing the fixed frame 4 on the surface of the connecting tube 1, the inner wall of the fixed frame 4 is slidably connected to the sliding frame 6, and one end of the sliding frame 6 is connected to a sealing ring 7 made of rubber. The inner wall of the sealing ring 7 is connected to the surface of the sliding rod 2, so that the connection between the sliding rod 2 and the connecting tube 1 is blocked by the sealing ring 7, and the loose part of the sealing ring 7 is tightened by moving the sliding frame 6 to avoid the situation where the sealing ring 7 is loose and a gap appears between the sliding rod 2 and the connecting tube 1. The inner wall of the sliding frame 6 is slidably installed with a sliding rail 5, and one end of the sliding rail 5 is fixedly connected to the inner wall of the fixed frame 4, so that the moving position of the sliding frame 6 is limited by the sliding rail 5, so that the sliding frame 6 is prevented from deviating and affecting the tightening effect of the sealing ring 7. One end of the sliding frame 6 is rotatably connected to a threaded rod 8, and one end of the threaded rod 8 is fixedly installed with a rotating block 9, and the surface of the threaded rod 8 is threadedly connected to the inner wall of the fixed frame 4, so that the position of the sliding frame 6 can be adjusted and fixed by means of the threaded rod 8.

[0027] The limiting roller 10 can also be installed at both ends of the sealing ring 7. A rotating frame 11 is installed at one end of the limiting roller 10 so that the limiting roller 10 is connected to the surface of the sealing ring 7 with the help of the rotating frame 11. The limiting roller 10 blocks the surface of the sealing ring 7 to prevent the sealing ring 7 from having a gap after being pulled by the sliding frame 6. A fixed block 12 is installed on the surface of the rotating frame 11, and a spring 13 is installed between the two fixed blocks 12 so that the rotating frame 11 can be pulled by the spring 13 to connect the limiting roller 10 at one end of the rotating frame 11 to the surface of the sealing ring 7, effectively improving the limiting roller 10 on the sealing To achieve the shielding effect of the ring 7, one end of the rotating frame 11 is rotatably connected to the slider 14, and the inner wall of the slider 14 is slidably connected to the connecting block 15. One end of the connecting block 15 is connected to the surface of the sliding frame 6, so that the rotating frame 11 at one end of the slider 14 can be installed on the surface of the sliding frame 6 with the help of the connecting block 15, and the position of the rotating frame 11 is limited to prevent the rotating frame 11 from deviating and affecting the extrusion effect of the limiting roller 10. A limiting block 16 is installed at one end of the connecting block 15, so that the connection position of the slider 14 can be limited by the limiting block 16 to prevent the slider 14 from separating from the connecting block 15.

[0028] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A hydraulic cylinder with an axial sealing device, comprising a connecting tube (1) and a fixing frame (4), characterized in that: A slide rod (2) is slidably mounted on the inner wall of the connecting tube (1), and the size of the surface of the slide rod (2) is compatible with the size of the inner wall of the connecting tube (1), and one end of the slide rod (2) is fixedly connected to a mounting block (3), and a slide frame (6) is slidably mounted on the inner wall of the fixed frame (4), and the size of the surface of the slide frame (6) is interference-fitted with the size of the inner wall of the fixed frame (4), and a sealing ring (7) is clamped on the surface of the slide frame (6), and the inner wall of the sealing ring (7) is movably connected to the surface of the slide rod (2).

2. The hydraulic cylinder with an axial sealing device according to claim 1, characterized in that: One end of the fixed frame (4) is welded to the surface of the connecting tube (1); the sealing ring (7) is a rubber ring, and the size of the surface of the sealing ring (7) is compatible with the size of the inner wall of the sliding frame (6).

3. The hydraulic cylinder with an axial sealing device according to claim 1, characterized in that: Two slide rails (5) are slidably mounted on the inner wall of the sliding frame (6), the cross section of the slide rail (5) being in a T-shaped structure, and one end of the slide rail (5) being fixedly connected to the inner wall of the fixed frame (4), and the two slide rails (5) being symmetrically distributed with the sliding frame (6) as the axis.

4. The hydraulic cylinder with an axial sealing device according to claim 1, characterized in that: A threaded rod (8) is rotatably mounted on one end of the sliding frame (6), the surface of the threaded rod (8) is threadedly connected to the inner wall of the fixed frame (4), and a rotating block (9) is fixedly mounted on one end of the threaded rod (8), the center of the rotating block (9) and the center of the threaded rod (8) are on the same straight line.

5. The hydraulic cylinder with an axial sealing device according to claim 1, characterized in that: The surface of the sealing ring (7) is rotatably connected to two limiting rollers (10), the two limiting rollers (10) are symmetrically distributed with the sealing ring (7) as the axis, and a rotating frame (11) is rotatably installed on the surface of the limiting roller (10), and the cross-section of the rotating frame (11) is a "V"-shaped structure.

6. The hydraulic cylinder with an axial sealing device according to claim 5, characterized in that: The surfaces of the two rotating frames (11) are both fixedly connected with fixed blocks (12), and a spring (13) is fixedly installed between the two fixed blocks (12).

7. The hydraulic cylinder with an axial sealing device according to claim 5, characterized in that: One end of the rotating frame (11) is rotatably connected to a slider (14), and a connecting block (15) is slidably mounted on the inner wall of the slider (14). The cross section of the connecting block (15) is a "T"-shaped structure, and one end of the connecting block (15) is fixedly connected to the surface of the sliding frame (6).

8. The hydraulic cylinder with an axial sealing device according to claim 7, characterized in that: A limiting block (16) is fixedly mounted on one end of the connecting block (15), and the size of the surface of the limiting block (16) is larger than the size of one end of the connecting block (15).

Images