CN217873532U

CN217873532U - Piston rod connection structure for preventing piston rod from being broken

Info

Publication number: CN217873532U
Application number: CN202221963200.3U
Authority: CN
Inventors: 吴琦
Original assignee: Wuxi Jiaxin Mingyou Hydraulic Technology Co ltd
Current assignee: Wuxi Jiaxin Mingyou Hydraulic Technology Co ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2022-11-22
Anticipated expiration: 2032-07-27

Abstract

A piston rod connection structure for preventing a piston rod from being broken, comprising: the cylinder, cylinder upper end fixed connection cylinder cap, sliding connection piston rod in the cylinder, nut fixed connection piston is passed through to the bottom of the piston rod, and the spout has all been seted up to both sides in the piston rod, the equal fixed connection slider in both sides in the cylinder, slider sliding connection in the spout, cylinder cap upper end fixed connection go-between, the equal fixed connection connecting plate in go-between upper end both sides, the connecting plate is close to one side upper end fixed connection spacing ring each other, spacing ring and piston rod sliding connection, the beneficial effects of the utility model are that: through setting up O type circle on the piston for the piston rod does not have corresponding groove structure, thereby has avoided the fracture problem that stress concentration arouses, and when using, also can be through spacing ring, connecting plate and the go-between structure that sets up, avoids because of the piston rod amplitude of movement is great, the slope problem that leads to makes things convenient for the long-term use of piston rod.

Description

Piston rod connection structure for preventing piston rod from being broken

Technical Field

The utility model relates to a piston rod technical field, concretely relates to prevent piston rod connection structure that splits.

Background

The piston rod is a connecting part for supporting the piston to do work, most of the piston rod is applied to an oil cylinder and an air cylinder movement executing part, the movement executing part is a movement part with frequent movement and high technical requirements, in order to prevent hydraulic oil from leaking from a connecting part of the piston rod and the air cylinder, a type sealing ring mounting groove is usually designed at the polished rod end of the piston rod, and an O-shaped sealing ring is installed to play a role in preventing leakage during actual installation.

At present, due to structural or processing reasons, a knife mark, a sharp corner or a small round corner exists at the groove bottom of the groove, and the stress concentration problem also occurs, so that the piston rod is seriously fractured, and the problem needs to be solved.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is because the reason of structure or processing, there are tool mark, closed angle or less fillet at the tank bottom in this groove, and stress concentration problem also takes place thereupon, seriously will lead to the fracture of piston rod, provides one kind and prevents piston rod connection structure that the piston rod is split, makes it through with O type circle setting on the piston for the piston rod does not have corresponding groove structure, thereby has avoided stress concentration the fracture problem that arouses.

The utility model provides a technical scheme that technical problem adopted is: a piston rod connecting structure for preventing a piston rod from being broken, comprising: the cylinder, cylinder upper end fixed connection cylinder cap, sliding connection piston rod in the cylinder, nut fixed connection piston is passed through to the piston rod bottom, the spout has all been seted up to both sides in the piston rod, the equal fixed connection slider in both sides in the cylinder, slider sliding connection is in the spout, and the spout and the slider structure of setting can play spacing piston rod's effect, avoid piston rod home range to surpass the regulation, cylinder cap upper end fixed connection go-between, the equal fixed connection connecting plate in go-between upper end both sides, the connecting plate is close to one side upper end fixed connection spacing ring each other, spacing ring and piston rod sliding connection, the spacing ring structure of setting, the recovering of piston rod of can being convenient for, avoid the piston rod to incline when recovering, the piston rod that leads to warp or breaks.

As an optimal technical solution of the utility model: the inner fixed connection main seal ring at the upper end of the cylinder cover is in contact with the piston rod, and the fixed connection dustproof ring at the upper end of the cylinder cover plays a role in preventing dust from entering the cylinder barrel.

As an optimal technical solution of the utility model: the piston upper end fixed connection antifouling ring, the middle part fixed connection ring of wearing on the piston, the antifouling ring that sets up plays the effect of protection piston with the ring of wearing.

As an optimal technical solution of the utility model: the piston is internally provided with a fixing groove, an O-shaped ring is installed in the fixing groove, the O-shaped ring is fixedly connected with the piston rod, the O-shaped ring is arranged in the fixing groove, and the problem of fracture caused by stress concentration can be solved.

The utility model has the advantages of it is following: through setting up O type circle on the piston for the piston rod does not have corresponding groove structure, thereby has avoided the fracture problem that stress concentration arouses, and when using, also can be through spacing ring, connecting plate and the go-between structure that sets up, avoids because of the piston rod amplitude of movement is great, the slope problem that leads to makes things convenient for the long-term use of piston rod.

Drawings

FIG. 1 is a sectional view of the structure of the present invention;

FIG. 2 is a schematic structural view of a stop collar of the present invention;

fig. 3 is an enlarged view of the structure a of fig. 1 according to the present invention.

Description of reference numerals: 1. a cylinder barrel; 2. a piston rod; 3. a cylinder cover; 4. a slider; 5. a chute; 6. a piston; 61. fixing grooves; 7. an antiwear ring; 8. an antifouling ring; 9. a primary seal ring; 10. A dust ring; 11. a connecting ring; 12. a connecting plate; 13. a limiting ring; 14. and an O-shaped ring.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Referring to fig. 1-3, the present invention provides a technical solution: a piston rod connecting structure for preventing a piston rod from being broken, comprising: cylinder 1, at 1 upper end fixed connection cylinder cap 3 of cylinder, 1 internal sliding connection piston rod 2 of cylinder, then pass through nut fixed connection piston 6 in 2 bottoms of piston rod, in order to avoid 2 activities of piston rod to surpass the regulation, spout 5 has all been seted up to both sides in 2 interior piston rods, the equal fixed connection slider 4 in both sides in cylinder 1 again, make slider 4 can slide in the spout, in order to guarantee the removal of piston rod 2, at 3 upper end fixed connection go-between 11 of cylinder cap, and at 11 upper end equal fixed connection connecting plates 12 in both sides of go-between, then be close to one side upper end fixed connection spacing ring 13 each other at two connecting plates 12, and make

spacing ring

13 and 2 sliding connection of piston rod.

Wherein, in order to play fine sealed effect, at 3 upper ends internal fixation of cylinder cap and connect main sealing washer 9 to make main sealing washer 9 and piston rod 2 contact, avoid the dust to get into in the cylinder 1, so at 3 upper ends fixed connection dust ring 10 of cylinder cap.

Wherein, for the protection piston 6, at the antifouling ring of 6 upper end fixed connection 8 of piston, again on piston 6 middle part fixed connection wear ring 7, reduce the wearing and tearing of piston 6.

In order to avoid the problem of fracture due to stress concentration, a fixing groove 61 is formed in the piston 6, the O-ring 14 is fitted into the fixing groove 61, and the O-ring 14 and the piston rod 2 are fixedly connected.

Specifically, use the utility model discloses the time, when piston rod 2 when removing, slider 4 can slide in spout 5, and simultaneously, piston rod 2 can slide with the spacing ring 13 that sets up, and spacing ring 13 can restrict piston rod 2, avoid piston rod 2 and cylinder 1 to separate when too much, the slope appears, prevent piston rod 2's fracture, when piston rod 2 surface is mostly close to in the cylinder 1, antifouling ring 8 with wear-resisting ring 7 or protection piston rod 2, avoid piston rod 2 to receive more wearing and tearing, and simultaneously, set up O type circle 14 in piston 6, make piston rod 2 not have this recess, thereby avoided the fracture problem that stress concentration arouses.

Claims

1. The utility model provides a prevent piston rod connection structure that breaks which characterized in that includes: cylinder (1), cylinder (1) upper end fixed connection cylinder cap (3), sliding connection piston rod (2) in cylinder (1), nut fixed connection piston (6) are passed through to piston rod (2) bottom, spout (5) have all been seted up from both sides in piston rod (2), the equal fixed connection slider (4) in both sides in cylinder (1), slider (4) sliding connection is in spout (5), cylinder cap (3) upper end fixed connection go-between (11), the equal fixed connection connecting plate (12) in go-between (11) upper end both sides, connecting plate (12) are close to one side upper end fixed connection spacing ring (13) each other, spacing ring (13) and piston rod (2) sliding connection.

2. The piston rod connection structure for preventing the piston rod from being broken according to claim 1, wherein a main seal ring (9) is fixedly connected in the upper end of the cylinder cover (3), the main seal ring (9) is in contact with the piston rod (2), and a dust ring (10) is fixedly connected to the upper end of the cylinder cover (3).

3. A piston rod connection structure preventing a piston rod from being broken according to claim 1, wherein an antifouling ring (8) is fixedly connected to the upper end of the piston (6), and an antiwear ring (7) is fixedly connected to the upper middle part of the piston (6).

4. The piston rod connection structure for preventing the piston rod from being broken according to claim 1, wherein a fixing groove (61) is formed in the piston (6), an O-ring (14) is installed in the fixing groove (61), and the O-ring (14) is fixedly connected with the piston rod (2).