A high-strength ejector piston rod

Abstract

The utility model relates to a piston rod technical field especially relates to a high -strength ejection piston rod, including the shell, the movable rod connected in the inner side of shell, the damping assembly connected in the bottom side of movable rod, the shell includes the protective housing, the sealing ring groove no.

Description

Technical Field

[0001] This utility model relates to the field of piston rod technology, specifically a high-strength ejector piston rod. Background Technology

[0002] The piston rod is the connecting component that supports the piston in performing work. It is mostly used in the motion actuators of hydraulic cylinders and pneumatic cylinders. It is a moving component with frequent movement and high technical requirements. Taking a hydraulic cylinder as an example, it consists of several parts: cylinder barrel, piston rod (cylinder rod), piston, and end cap. The quality of its processing directly affects the life and reliability of the entire product. The piston rod has high processing requirements, with a surface roughness requirement of Ra0.4~0.8um and strict requirements for coaxiality and wear resistance.

[0003] Currently, piston rods typically require external shock absorption devices during use, and the piston rod body needs to be replaced and maintained after a period of use, which increases the production and maintenance costs for enterprises, prolongs equipment downtime, and reduces economic benefits. Utility Model Content

[0004] In order to overcome the problem that the need to replace and maintain piston rods after a period of use increases the production and maintenance costs of enterprises, and that the downtime of equipment is longer and the economic benefits are reduced.

[0005] The present invention provides a high-strength ejector piston rod, comprising a housing, a movable rod connected to the inner side of the housing, and a shock-absorbing assembly connected to the bottom side of the movable rod. The outer shell includes a protective shell, a sealing ring groove 1 formed inside the protective shell, a sealing ring groove 2 formed inside the protective shell, and a dustproof ring groove formed on the top side of the protective shell. The movable rod includes a piston rod body, a dustproof ring fixedly connected to the side of the piston rod body, a second sealing ring fixedly connected to the side of the piston rod body, a first sealing ring fixedly connected to the side of the piston rod body, a shock-absorbing disc fixedly connected to the side of the piston rod body, a front shock-absorbing spring fixedly connected to the bottom surface of the shock-absorbing disc, a chassis fixedly connected to the bottom surface of the front shock-absorbing spring, a damping spring fixedly connected to the bottom surface of the chassis, and a connecting piece fixedly connected to the bottom surface of the damping spring. The shock absorption assembly includes a fixed cylinder, a small spring fixedly connected to the inner side of the fixed cylinder, a top block fixedly connected to the top side of the small spring, an inner cylinder fixedly connected to the inner side of the fixed cylinder, a filling cavity fixedly connected to the inner side of the inner cylinder, a pressure plate connected to the top side of the filling cavity through a fixing hole on the top surface of the filling cavity, a large spring fixedly connected to the top side of the pressure plate, a pressure block fixedly connected to the top surface of the large spring, and a fixing groove on the top surface of the pressure block.

[0006] Preferably, the fixing groove is a through groove that runs vertically through the top and bottom.

[0007] Preferably, the shock-absorbing disc, the top block, the second sealing ring, and the first sealing ring are made of rubber.

[0008] Preferably, the smaller springs are arranged in a ring around the larger spring.

[0009] Preferably, the front shock-absorbing springs are arranged in a ring around the piston rod.

[0010] Preferably, the fixing grooves are provided in multiple ways and arranged in a ring.

[0011] Compared with the prior art, this utility model provides a high-strength ejector piston rod, which has the following beneficial effects: 1. This utility model effectively isolates external contaminants while ensuring sealing by using a dustproof ring, sealing ring one, and sealing ring two to prevent leakage of the filling liquid or gas inside the piston rod. Combined with a rubber shock-absorbing disc and top block, it effectively alleviates the impact force generated by vibration. The annularly arranged front shock-absorbing springs and shock-absorbing components form a buffer system on the upper and lower sides, which can effectively absorb the impact force generated by bidirectional vertical movement and help the piston rod avoid component wear or efficiency reduction caused by severe vibration during frequent extension and retraction. 2. In this utility model, when the piston rod extends upward, the front shock-absorbing spring first absorbs the impact force. Then, the large and small springs in the shock-absorbing assembly disperse the vibration energy through the annular arrangement structure, ensuring uniform force distribution. The lubricating oil in the filling cavity flows through the annular fixed groove after being compressed, forming dynamic hydraulic damping and weakening the vibration transmission. The rubber shock-absorbing disc and the top block fill the gap with elastic deformation during the compression process. At the same time, the cooperation between the sealing ring and the sealing ring groove prevents lubricating oil leakage. This allows the piston rod to maintain high-strength output during reciprocating motion and effectively protect the internal structure from impact damage after long-term use. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the movable rod structure of this utility model; Figure 4 This is a schematic diagram of the shock absorption component structure of this utility model; Figure 5 This is a cross-sectional structural diagram of the shock absorption component of this utility model.

[0013] In the diagram: 1. Outer shell; 101. Protective shell; 102. Sealing ring groove one; 103. Sealing ring groove two; 104. Dustproof ring groove; 2. Movable rod; 201. Piston rod body; 202. Dustproof ring; 203. Sealing ring two; 204. Sealing ring one; 205. Shock absorber plate; 206. Front shock absorber spring; 207. Chassis; 208. Shock absorber spring; 209. Connecting piece; 3. Shock absorber assembly; 301. Fixed cylinder; 302. Small spring; 303. Top block; 304. Inner cylinder; 305. Filling cavity; 306. Fixing hole; 307. Pressure plate; 308. Large spring; 309. Pressure block; 310. Fixing groove Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] A high-strength ejector piston rod, according to Figures 1-4 As shown, it includes a housing 1, a movable rod 2 connected to the inside of the housing 1, and a shock-absorbing assembly 3 connected to the bottom of the movable rod 2; The outer shell 1 includes a protective shell 101, a sealing ring groove 102 formed inside the protective shell 101, a sealing ring groove 103 formed inside the protective shell 101, and a dustproof ring groove 104 formed on the top side of the protective shell 101. The movable rod 2 includes a piston rod body 201, a dustproof ring 202 fixedly connected to the side of the piston rod body 201, a second sealing ring 203 fixedly connected to the side of the piston rod body 201, a first sealing ring 204 fixedly connected to the side of the piston rod body 201, a shock absorber 205 fixedly connected to the side of the piston rod body 201, a front shock absorber spring 206 fixedly connected to the bottom surface of the shock absorber plate 205, a chassis 207 fixedly connected to the bottom surface of the front shock absorber spring 206, a damping spring 208 fixedly connected to the bottom surface of the chassis 207, and a connecting piece 209 fixedly connected to the bottom surface of the damping spring 208. The shock absorption assembly 3 includes a fixed cylinder 301, a small spring 302 fixedly connected to the inner side of the fixed cylinder 301, a top block 303 fixedly connected to the top side of the small spring 302, an inner cylinder 304 fixedly connected to the inner side of the fixed cylinder 301, a filling cavity 305 fixedly connected to the inner side of the inner cylinder 304, a fixing hole 306 opened on the top surface of the filling cavity 305 and a pressure plate 307 connected to the top side of the filling cavity 305, a large spring 308 fixedly connected to the top side of the pressure plate 307, a pressure block 309 fixedly connected to the top surface of the large spring 308, and a fixing groove 310 opened on the top surface of the pressure block 309.

[0016] As shown, the fixed groove 310 is a through groove that runs vertically through the top and bottom.

[0017] It should be noted that the piston rod is usually filled with lubricating oil. When the lubricating oil in the filling cavity 305 is squeezed, it will flow out through the fixing groove 310. Because the filling with lubricating oil will generate pressure, it can alleviate the impact generated when the piston rod vibrates.

[0018] As shown, the shock absorber 205, the top block 303, the sealing ring 203, and the sealing ring 204 are all made of rubber.

[0019] It should be noted that rubber materials have good corrosion resistance when in contact with various filling liquids or gases with different chemical properties. At the same time, the elasticity of the material itself can better fill gaps and prevent leakage of liquid or gas.

[0020] As shown, the small spring 302 is arranged in a ring around the large spring 308.

[0021] It should be noted that a single spring may not be able to maintain a straight vertical damping trajectory when subjected to relatively severe vibrations, which may lead to the protective shell 101 and the piston rod 201 colliding and affecting working efficiency, resulting in failure.

[0022] As shown, the front shock absorber spring 206 is arranged in a ring around the piston rod 201.

[0023] It should be noted that the front shock-absorbing spring 206 on the front side and the shock-absorbing component 3 on the bottom surface can achieve good shock absorption effect when the piston rod 201 is compressed and rebounded, thereby improving the service life of the equipment.

[0024] As shown, the fixing grooves 310 are provided in multiple ways and arranged in a ring.

[0025] It should be noted that the fixing slot 310 can adjust the shock absorption effect. The number of fixing slots 310 can be adjusted according to actual needs, so that the equipment can be applied to more scenarios.

[0026] The 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 above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A high-strength ejector piston rod, characterized in that: Includes a housing (1), a movable rod (2) connected to the inside of the housing (1), and a shock-absorbing assembly (3) connected to the bottom of the movable rod (2); The outer shell (1) includes a protective shell (101), a sealing ring groove one (102) opened on the inner side of the protective shell (101), a sealing ring groove two (103) opened on the inner side of the protective shell (101), and a dustproof ring groove (104) opened on the top side of the protective shell (101). The movable rod (2) includes a piston rod body (201), a dustproof ring (202) fixedly connected to the side of the piston rod body (201), a sealing ring II (203) fixedly connected to the side of the piston rod body (201), a sealing ring I (204) fixedly connected to the side of the piston rod body (201), a shock absorber (205) fixedly connected to the side of the piston rod body (201), a front shock absorber spring (206) fixedly connected to the bottom surface of the shock absorber spring (205), a chassis (207) fixedly connected to the bottom surface of the front shock absorber spring (206), a damping spring (208) fixedly connected to the bottom surface of the chassis (207), and a connecting piece (209) fixedly connected to the bottom surface of the damping spring (208). The shock absorption assembly (3) includes a fixed cylinder (301), a small spring (302) fixedly connected to the inside of the fixed cylinder (301), a top block (303) fixedly connected to the top side of the small spring (302), an inner cylinder (304) fixedly connected to the inside of the fixed cylinder (301), a filling cavity (305) fixedly connected to the inside of the inner cylinder (304), a fixing hole (306) opened on the top surface of the filling cavity (305), a pressure plate (307) connected to the top side of the filling cavity (305), a large spring (308) fixedly connected to the top side of the pressure plate (307), a pressure block (309) fixedly connected to the top surface of the large spring (308), and a fixing groove (310) opened on the top surface of the pressure block (309).

2. The high-strength ejector piston rod according to claim 1, characterized in that: The fixing groove (310) is a through groove that runs vertically through the top and bottom.

3. The high-strength ejector piston rod according to claim 1, characterized in that: The shock absorber (205), top block (303), sealing ring two (203), and sealing ring one (204) are made of rubber.

4. A high-strength ejector piston rod according to claim 1, characterized in that: The small springs (302) are arranged in a ring around the large spring (308).

5. A high-strength ejector piston rod according to claim 1, characterized in that: The front shock absorber spring (206) is arranged in a ring around the piston rod (201).

6. A high-strength ejector piston rod according to claim 1, characterized in that: The fixing grooves (310) are provided in multiple ways and arranged in a ring.

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