CN220688031U - Gray ring escape preventing device for oil cylinder shaft - Google Patents

Abstract

The utility model relates to a Gray ring escape preventing device for an oil cylinder shaft, which comprises an end cover, a U-shaped groove and a bottom cover, wherein the end cover and the bottom cover are sleeved on a small piston rod, and one ends of the end cover and the bottom cover, which are close to the small piston rod, are provided with escape preventing surfaces; a Gelai ring is arranged between the end cover and the bottom cover and close to one side of the piston rod, and the anti-falling surface of the end cover and the anti-falling surface of the bottom cover are matched with the Gelai ring; and one end of the Gelai ring, which is far away from the small piston rod, is provided with a U-shaped groove. The Gray ring escape prevention device for the oil cylinder shaft is simple to process, low in cost, compact in structure and capable of being repeatedly disassembled and assembled on the premise of guaranteeing the performance and various quality indexes of the oil cylinder.

Description

Gray ring escape preventing device for oil cylinder shaft

Technical Field

The utility model relates to the technical field of hydraulic equipment, in particular to a Grignard ring escape prevention device for an oil cylinder shaft.

Background

The hydraulic cylinder shaft is generally convenient for integral processing, and the escape preventing device is not adopted, so that the hydraulic cylinder shaft is caused to escape from the sealing groove by the aid of the gray ring, and the sealing is disabled.

A hydraulic ram piston securing structure as disclosed in publication No. CN218377139U, comprising: the piston rod is provided with a groove in the circumferential direction; the piston is sleeved on the piston rod and comprises a first piston body and a second piston body which are arranged in parallel, the first piston body is fixedly connected with the second piston body, and a concave hole is formed in the contact position of the inner sides of the first piston body and the second piston body; the clamping key is movably arranged in the groove, and the outer side of the clamping key is fixedly connected with the concave hole. The scheme has the advantages of complex structure, poor stability and easy failure of the sealing structure.

Disclosure of Invention

The utility model aims to provide a novel Grignard ring escape prevention device for an oil cylinder shaft, which is applied to a hydraulic cylinder, so that the Grignard ring escape prevention device for the oil cylinder shaft is simple to process, low in cost, compact in structure and capable of being repeatedly disassembled and assembled on the premise of guaranteeing the performance and various quality indexes of the oil cylinder.

The utility model provides the following technical scheme: the Gray ring escape preventing device for the oil cylinder shaft comprises an end cover, a small piston rod and a bottom cover, wherein the end cover and the bottom cover are sleeved on the small piston rod, and one ends of the end cover and the bottom cover, which are close to the small piston rod, are provided with escape preventing surfaces; a Gelai ring is arranged between the end cover and the bottom cover and close to one side of the piston rod, and the anti-falling surface of the end cover and the anti-falling surface of the bottom cover are matched with the Gelai ring; and one end of the Gelai ring, which is far away from the small piston rod, is provided with a U-shaped groove. The end cover and the anti-drop surface on the bottom cover are correspondingly arranged; the purpose is to prevent the Gelai circle from being rolled into the gaps among the small piston rod, the end cover and the bottom cover in the movement process of the small piston rod. The U-shaped groove seals the path of movement of the Gelai ring to the end far away from the small piston rod, so that the Gelai ring is fixed between the end cover and the bottom cover.

Further, an end cover mounting part is arranged on the end cover, the end cover mounting part is of a step type, and the end cover mounting part comprises an end cover first step, an end cover second step and an end cover third step.

Further, a bottom cover installation part is arranged on the bottom cover, the bottom cover installation part is of a ladder type, and the bottom cover installation part comprises a first ladder of the bottom cover and a second ladder of the bottom cover. The space formed by the first ladder of the end cover and the first ladder of the bottom cover is used for fixing the Gelai ring.

Further, a plurality of connecting pieces are arranged on the end cover, and the connecting pieces penetrate through the end cover and are fixed on the piston. The connection member may be a screw or the like. And a space for the penetrating end of the connecting piece is reserved on the end cover.

Furthermore, an O-shaped ring is arranged in the U-shaped groove, and the O-shaped ring is matched with the U-shaped groove.

Further, the U-shaped groove is matched with the second ladder of the end cover and the second ladder of the bottom cover. The space formed by the second ladder of the end cover and the second ladder of the bottom cover is used for fixing the U-shaped groove.

Further, the inner diameters of the end cover and the bottom cover are the same, and the U-shaped groove, the end cover second step, the bottom cover second step and the piston are arranged in a matched mode. The piston is placed on the second step of the end cover and the second step of the bottom cover, and the U-shaped groove and the O-shaped ring provide sealing between the piston and the end cover and the bottom cover.

Furthermore, the Gelai ring and the O-shaped ring are made of elastic materials. The Gelai ring and the O-shaped ring have sealing effect, and the elastic material can provide better sealing performance. While providing cushioning to reduce wear.

The utility model has the following advantages.

(1) The end cover and the bottom cover only need to be respectively provided with an anti-falling surface, and the processing is simple.

(2) The end cover and the bottom cover are low in price, and the manufacturing cost of the oil cylinder is reduced.

(3) The assembly is simple and convenient, and the disassembly and assembly can be repeated.

(4) Compact structure, good reliability and strong sealing performance.

(5) Can be repeatedly disassembled and assembled.

Drawings

Fig. 1 is a schematic cross-sectional view of a gray ring escape prevention device for an oil cylinder shaft according to the present utility model.

Fig. 2 is an enlarged view of an end cap of a gray ring escape prevention device for an oil cylinder shaft according to the present utility model.

Fig. 3 is an enlarged view of a bottom cover of the gray ring escape preventing device for the oil cylinder shaft.

Fig. 4 is a front view of an end cap of a gray ring escape prevention device for an oil cylinder shaft according to the present utility model.

Fig. 5 is a sectional view of a gray ring escape preventing device for an oil cylinder shaft according to the present utility model.

In the figure: 1-screw, 2-end cover, 21-end cover first ladder, 22-end cover second ladder, 23-end cover third ladder, 3-piston, 4-U-shaped groove, 5-O-shaped ring, 6-axle Gelai ring, 7-bottom, 71-bottom first ladder, 72-bottom second ladder, 8-small piston rod, 9-anti-drop face.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

The utility model will be further described with reference to the following examples, which are given in connection with the accompanying drawings.

1-5, the Gray ring escape preventing device for the oil cylinder shaft comprises a 1-screw, a 2-end cover, a 21-end cover first step, a 22-end cover second step, a 23-end cover third step, a 3-piston, a 4-U-shaped groove, a 5-O-shaped ring, a 6-shaft Gray ring, a 7-bottom cover, a 71-bottom cover first step, a 72-bottom cover second step, an 8-small piston rod and a 9-escape preventing surface.

The embodiment is shown in the accompanying drawings, and the following technical scheme is provided: the Gray ring 6 escape preventing device for the oil cylinder shaft comprises an end cover 2, a small piston rod and a bottom cover 7, wherein the end cover 2 and the bottom cover 7 are sleeved on the small piston rod 8, and one ends of the end cover 2 and the bottom cover 7, which are close to the small piston rod 8, are provided with escape preventing surfaces 9; a gray ring 6 is arranged between the end cover 2 and the bottom cover 7 and close to the small piston rod 8, and the end cover anti-falling surface 9 and the bottom cover 7 anti-falling surface 9 are matched with the gray ring 6; the end of the Gelai circle 6 far away from the small piston rod 8 is provided with a U-shaped groove 4. The end cover 2 and the anti-falling surface 9 on the bottom cover 7 are correspondingly arranged; the purpose is to prevent the Gelai circle 6 from being rolled into the gap between the small piston rod 8 and the end cover 2 and the bottom cover 7 during the movement of the small piston rod 8. The U-shaped groove 4 encloses the path of movement of the gurley 6 towards the end remote from the small piston rod 8, so that the gurley 6 is secured between the end cap 2 and the bottom cap 7. In this embodiment, the anti-falling surface 9 protrudes slightly beyond the end cap 2 and the bottom cap 7.

The end cover 2 is provided with an end cover mounting part which is of a step shape and comprises an end cover first step 21, an end cover second step 22 and an end cover third step 23.

The bottom cover 7 is provided with a bottom cover 7 mounting part, the bottom cover 7 mounting part is of a ladder type, and the bottom cover 7 mounting part comprises a bottom cover first ladder 71 and a bottom cover second ladder 72. The space formed by the cooperation of the end cover first step 21 and the bottom cover first step 71 is used for fixing the gray ring 6. In the present embodiment, the upper surface of the end cover first step 21 and the upper surface of the bottom cover first step 71 are in the same plane, and the upper surfaces of the end cover second step 22 and the bottom cover second step 72 are in the same plane.

The end cover 2 is provided with a plurality of connecting pieces, and the connecting pieces penetrate through the end cover 2 and are fixed on the piston 3. The connection may be a screw 1 or the like. The end cover 2 is provided with a space for the penetrating end of the connecting piece.

An O-shaped ring 5 is arranged in the U-shaped groove 4, and the O-shaped ring 5 is matched with the U-shaped groove 4. In this embodiment, the direction of the U-shaped groove 4 away from the small piston rod is provided with an opening, the opening is annular, the U-shaped groove 4 is also annular, and the outer diameter of the O-ring 5 should be slightly larger than the diameter of the widest part of the opening.

The U-shaped groove 4 is cooperatively disposed with the end cap second step 22 and the bottom cap second step 72. The space formed by the cooperation of the end cap second step 22 and the bottom cap second step 72 is used for fixing the U-shaped groove 4. In this embodiment, the bottom of the U-shaped groove 4 is placed on the plane formed by the first step 71 of the bottom cover and the first step 21 of the end cover, so as to limit the movement of the gurley loop in the direction away from the small piston rod, and the plane formed by the first step 71 and the first step 21 of the end cover can fix the position of the U-shaped groove 4.

The inner diameters of the end cover and the bottom cover 7 are the same, and the U-shaped groove 4, the end cover second step 22, the bottom cover second step 72 and the piston 3 are matched. The piston rests on the end cap second steps 22, bottom cap second steps 72, and the U-shaped groove 4 and O-ring 5 provide a seal between the piston 3 and the end cap 2, bottom cap 7. In this embodiment, the end cap second steps 22 and the bottom cap second steps 72 have the same relative height, and may form a plane, and the highest position of the U-shaped groove is also located on the plane formed by the end cap second steps 22 and the bottom cap second steps 72. The inner wall of the piston is parallel to this plane.

The Gelai ring 6 and the O-shaped ring 5 are both made of elastic materials. The gray ring 6 and the O-shaped ring 5 have sealing effect, and the elastic material can provide better sealing performance. While providing cushioning to reduce wear.

In this embodiment, when the cylinder shaft gray ring 6 is fastened, the anti-falling surface 9 of the end cover 2 and the bottom cover 7 is fastened at the shaft gray ring 6, and the end cover 2 is fixed to the piston 3 by the screw 1, and the shaft gray ring 6 moves on the small piston rod 8 without falling off because the anti-falling surface 9 fastens the shaft gray ring 6.

The embodiment can be realized by the following steps: the bottom cover 7 is assembled into the inner groove of the piston 3, the O-shaped ring 5 is assembled into the groove of the U-shaped groove 4, the O-shaped ring 5 and the U-shaped groove 4 are assembled into the groove of the piston 3 and are jointed with the bottom cover 7, the shaft gray ring 6 is assembled into the U-shaped groove 4 and is jointed with the anti-falling surface 9 of the bottom cover 7, the end cover 2 is assembled into the groove of the piston 3 and is jointed with the U-shaped groove 4, and the anti-falling surface 9 of the end cover 2 is jointed with the shaft gray ring 6. The end cover 2 is fixed on the piston 3 by the screw 1, and the anti-falling surface 9 is clamped with the Gray ring 6 for the shaft, and the Gray ring 6 for the shaft moves on the small piston rod 8, so that the effect of falling prevention is achieved.

The object of the present utility model is fully effectively achieved by the above-described embodiments. Those skilled in the art will appreciate that the present utility model includes, but is not limited to, those illustrated in the drawings and described in the foregoing detailed description. While the utility model has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the utility model is not limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims.

Claims (7)

1. The Gray ring escape preventing device for the oil cylinder shaft is characterized by comprising an end cover, a small piston rod and a bottom cover, wherein the end cover and the bottom cover are sleeved on the small piston rod, and one ends of the end cover and the bottom cover, which are close to the small piston rod, are provided with escape preventing surfaces; a Gelai ring is arranged between the end cover and the bottom cover and close to one side of the small piston rod, and the anti-falling surface of the end cover and the anti-falling surface of the bottom cover are matched with the Gelai ring; and one end of the Gelai ring, which is far away from the small piston rod, is provided with a U-shaped groove.

2. The gray ring escape preventing device for the oil cylinder shaft according to claim 1, wherein the end cover is provided with a stepped end cover mounting part, and the end cover mounting part comprises an end cover first step, an end cover second step and an end cover third step; the bottom cover is provided with a stepped bottom cover mounting part, and the bottom cover mounting part comprises a first bottom cover step and a second bottom cover step; the end cover and the bottom cover are of an integrated structure.

3. The gray ring escape preventing device for a cylinder shaft according to claim 1 or 2, wherein a plurality of connecting pieces are arranged on the end cover, and the connecting pieces penetrate through the end cover and are fixed on the piston.

4. The gray ring escape preventing device for the oil cylinder shaft according to claim 1, wherein an O-shaped ring is arranged in the U-shaped groove, and the O-shaped ring is arranged in the U-shaped groove.

5. The gray ring escape preventing device for the oil cylinder shaft according to claim 2, wherein the U-shaped groove is arranged in cooperation with the end cover second step and the bottom cover second step, and the U-shaped groove is arranged between the end cover second step and the bottom cover second step.

6. The gray ring escape preventing device for a cylinder shaft according to claim 3, wherein the inner diameters of the end cover and the bottom cover are the same, and the U-shaped groove, the end cover second step, the bottom cover second step and the piston are arranged in a matched manner.

7. The escape preventing device for a cylinder shaft as claimed in claim 4, wherein the gray ring and the O-ring are made of elastic materials.