CN209925330U

CN209925330U - Oil cylinder with pressure buffering internal release structure

Info

Publication number: CN209925330U
Application number: CN201920382356.4U
Authority: CN
Inventors: 赵德英
Original assignee: Xinchang Tai Xiang Technology Co Ltd
Current assignee: Xinchang Tai Xiang Technology Co Ltd
Priority date: 2019-03-25
Filing date: 2019-03-25
Publication date: 2020-01-10
Anticipated expiration: 2029-03-25

Abstract

The utility model relates to a hydraulic cylinder technical field specifically is a hydro-cylinder with pressure buffering internal release structure, comprising a cylinder body, buffer and pressure relief device, buffer is including buffering guide holder, buffering footstock and buffering guide pillar, pressure relief device is including a pressure release section of thick bamboo and pressure release inner core, the welding of a pressure release section of thick bamboo is at the bottom right side outer wall of cylinder body, the inside of a pressure release section of thick bamboo is equipped with the pressure release inner core, the right-hand member mouth of a pressure release section of thick bamboo is connected with the cover, the cover spiro union has adjusting screw, the left end of hugging closely adjusting screw is equipped with the top piece, the outside cover of the telescopic link that establishes between the right side of pressure release inner core and the: the utility model discloses in, when cylinder body internal pressure was too high, hydraulic oil will cushion the footstock and push down, and flow into the inside of pressure release inner core along the clearance between buffering footstock and the buffering footstock spacing ring, and hydraulic oil promotes pressure release inner core mutually on the right side, and last hydraulic oil process hydraulic fluid port, and along oil extraction joint discharge pressure release.

Description

Oil cylinder with pressure buffering internal release structure

Technical Field

The utility model relates to a hydraulic cylinder technical field specifically is a hydro-cylinder with pressure buffering internal release structure.

Background

Hydraulic cylinder during operation, when piston speed is higher, the quality is great, can form great impact load at the stroke terminal point, take place mechanical collision with the cylinder bottom, arouse impact and noise, damage the hydro-cylinder even, consequently be indispensable for hydro-cylinder design buffer gear, and the recovery rate when the hydro-cylinder piston is too fast, and hydraulic oil in the hydro-cylinder comes too late quick getting rid of, leads to hydro-cylinder internal pressure too big, leads to the telescopic link bending deformation of hydro-cylinder easily, and the hydro-cylinder body deformation even.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an hydro-cylinder with release structure in pressure buffering to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an oil cylinder with a pressure buffering internal release structure comprises a cylinder body, a buffering device and a pressure relief device, wherein the buffering device comprises a buffering guide seat, a buffering top seat and a buffering guide pillar, the buffering guide seat is welded on the inner bottom surface of the cylinder body, a limiting guide hole is formed in the middle of the buffering guide seat, the buffering guide pillar is inserted in the limiting guide hole in a matched mode, the buffering top seat is welded at the upper end of the buffering guide pillar, a buffering spring is connected between the lower surface of the buffering top seat and the inner bottom surface of the cylinder body, the pressure relief device comprises a pressure relief cylinder and a pressure relief inner core, the pressure relief cylinder is welded on the outer wall of the right side of the bottom of the cylinder body, the inside of the pressure relief cylinder is communicated with the inner bottom of the cylinder body, a sleeve-shaped pressure relief inner core is arranged inside the pressure relief cylinder, a cylinder cover is connected with the right, be connected with flexible loop bar group between the right side of pressure release inner core and the left side of top plate, the outside cover of flexible loop bar group is equipped with pressure spring, and pressure spring connects the right side of pressure release inner core and the left side of top plate, the top outer wall welding of a pressure release section of thick bamboo has the oil extraction to connect, and the oil extraction connects the inside of a intercommunication pressure release section of thick bamboo, and the hydraulic fluid port has been seted up to the top outer wall of pressure release inner core.

Preferably, the lower part of the inner wall of the cylinder body is integrally formed with a circular buffering top seat limiting ring, and the buffering top seat is arranged close to the lower surface of the buffering top seat limiting ring.

Preferably, the upper surface of the buffering footstock is bonded with an elastic rubber block, and the elastic rubber block penetrates through the middle of the limiting ring of the buffering footstock.

Preferably, the adjusting screw rod and the pressure relief cylinder are coaxial, and a hexagonal bolt head is arranged at the right end of the adjusting screw rod.

Preferably, the outer wall of the pressure relief inner core is in sliding contact with the inner wall of the pressure relief cylinder in a matching manner, and the top plate is in sliding contact with the inner wall of the pressure relief cylinder.

Preferably, the inner wall welding of pressure release section of thick bamboo's left side port department has the annular pressure release inner core spacing ring of circle, and the right side wall of pressure release inner core spacing ring is hugged closely to the left side end of pressure release inner core.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the utility model, when the bottom of the piston contacts with the elastic rubber block adhered to the upper surface of the buffering footstock and presses the buffering footstock downwards, a buffer spring is connected between the lower surface of the buffering footstock and the inner bottom surface of the cylinder body and is used for buffering the piston;

2. the utility model discloses in, when cylinder body internal pressure was too high, hydraulic oil will cushion the footstock and push down, and flow into the inside of pressure release inner core along the clearance between buffering footstock and the buffering footstock spacing ring, and hydraulic oil promotes pressure release inner core mutually on the right side, and last hydraulic oil process hydraulic fluid port, and along oil extraction joint discharge pressure release.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 2.

In the figure: the oil pressure relief device comprises a cylinder body 1, a buffer device 2, a pressure relief device 3, a buffer guide seat 4, a buffer top seat 5, a buffer guide pillar 6, a buffer top seat limiting ring 7, a pressure relief cylinder 8, a pressure relief inner core 9, a pressure relief inner core limiting ring 10, an oil port 11, an oil discharge joint 12, a cylinder cover 13, an adjusting screw 14 and a top plate 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: an oil cylinder with a pressure buffering internal release structure comprises a cylinder body 1, a buffering device 2 and a pressure relief device 3, and is shown by combining a graph 1 and a graph 2, wherein the buffering device 2 comprises a buffering guide seat 4, a buffering footstock 5 and a buffering guide pillar 6, the buffering guide seat 4 is welded on the inner bottom surface of the cylinder body 1, the middle part of the buffering guide seat 4 is provided with a limiting guide hole, the buffering guide pillar 6 is inserted in the limiting guide hole in a matching way, the buffering footstock 5 is welded at the upper end of the buffering guide pillar 6, a buffering spring is connected between the lower surface of the buffering footstock 5 and the inner bottom surface of the cylinder body 1 for buffering a piston, a circular buffering footstock limiting ring 7 is integrally formed at the lower part of the inner wall of the cylinder body 1, under the action of the buffering spring, the lower surface of the buffering footstock 5, which is tightly attached to the buffering footstock limiting ring 7, is used, the elastic rubber block penetrates upwards along the middle part of the buffering top seat limiting ring 7 and is used for being in contact with the piston.

Combine fig. 2 and fig. 3 to show, pressure relief device 3 is including a pressure release section of thick bamboo 8 and pressure release

inner core

9, 8 welding of a pressure release section of thick bamboo are at the bottom right side outer wall of

cylinder body

1, and 8 inside bottom with cylinder body 1 of a pressure release section of thick bamboo are linked together, the inside of a pressure release section of thick bamboo 8 is equipped with telescopic pressure release inner core 9, the outer wall of pressure release inner core 9 and the inner wall cooperation sliding contact of a pressure release section of thick bamboo 8, the top outer wall welding of a pressure release section of thick bamboo 8 has the oil extraction joint 12, the inside of an oil extraction joint 12 intercommunication pressure release section of thick bamboo 8, hydraulic fluid port 11 has been seted up to the top outer wall of pressure release inner core 9, when 1 inside oil pressure of cylinder body is too big, hydraulic oil promotes.

Referring to fig. 2 and 3, a right port of the pressure relief cylinder 8 is connected with a cylinder cover 13 through a thread, a middle thread of the cylinder cover 13 is connected with an adjusting screw 14, the adjusting screw 14 and the pressure relief cylinder 8 are coaxial, the right end of the adjusting screw 14 is a hexagonal bolt head, the adjusting screw 14 can be conveniently rotated, a top plate 15 is arranged at the left end close to the adjusting screw 14, the top plate 15 is in sliding contact with the inner wall of the pressure relief cylinder 8, a telescopic sleeve rod set is connected between the right side of the pressure relief inner core 9 and the left side of the top plate 15 (as shown in fig. 3, a telescopic sleeve is welded at the left side of the top plate 15, a telescopic rod is welded at the right side wall of the pressure relief inner core 9 and is inserted in the telescopic sleeve in a matching manner), a compression spring is sleeved outside the telescopic sleeve rod set, the compression spring connects the right side of the pressure relief inner core 9 and, under the effect of a compression spring, the left side end of the pressure relief inner core 9 is tightly attached to the right side wall of the pressure relief inner core limiting ring 10, the pressure relief inner core 9 is prevented from entering the cylinder body 1, the adjusting screw 14 is rotated, and due to the threaded connection relationship between the cylinder cover 13 and the adjusting screw 14, the pressure of the adjusting screw 14 on the top plate 15 can be adjusted, namely the pressure on the pressure relief inner core 9 is adjusted.

The working principle is as follows: the utility model discloses during operation, as shown in fig. 2, when the piston retracts downwards, the piston bottom contacts with the elastic rubber piece of buffering footstock 5 upper surface bonding, and push down buffering footstock 5, be connected with buffer spring between the lower surface of buffering footstock 5 and the inside bottom surface of cylinder body 1, the buffering that is used for the piston, buffering guide pillar 6 that buffering footstock 5 lower surface welding cooperates and inserts and sets up in the middle part of buffering guide holder 4 and set up spacing guide hole, do not take place the skew when guaranteeing buffering footstock 5 up and down reciprocating motion; when the internal pressure of the cylinder body 1 is too high, hydraulic oil presses down the buffering top seat 5 and flows into the pressure relief inner core 9 along a gap between the buffering top seat 5 and the buffering top seat limiting ring 7, the hydraulic oil pushes the pressure relief inner core 9 to the right, and finally the hydraulic oil passes through the oil port 11 and is discharged along the oil discharge joint 12 for pressure relief; by rotating the adjusting screw 14, the pressure of the adjusting screw 14 on the top plate 15 can be adjusted due to the threaded connection between the cylinder cover 13 and the adjusting screw 14, i.e. the pressure on the inner pressure relief core 9 can be adjusted, so that the pressure of hydraulic oil discharge is limited.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an hydro-cylinder with interior release structure of pressure buffering, includes cylinder body (1), buffer (2) and pressure relief device (3), its characterized in that: the damping device (2) comprises a damping guide seat (4), a damping top seat (5) and a damping guide post (6), the damping guide seat (4) is welded on the inner bottom surface of the cylinder body (1), a limiting guide hole is formed in the middle of the damping guide seat (4), the damping guide post (6) is inserted into the limiting guide hole in a matched mode, the damping top seat (5) is welded at the upper end of the damping guide post (6), a damping spring is connected between the lower surface of the damping top seat (5) and the inner bottom surface of the cylinder body (1), the pressure relief device (3) comprises a pressure relief cylinder (8) and a pressure relief inner core (9), the pressure relief cylinder (8) is welded on the outer wall of the right side of the bottom of the cylinder body (1), the inside of the pressure relief cylinder (8) is communicated with the inner bottom of the cylinder body (1), a sleeve-shaped pressure relief inner core (9) is arranged inside the pressure relief cylinder (8), and a cylinder, the middle part threaded connection of cover (13) has adjusting screw (14), and the left end of hugging closely adjusting screw (14) is equipped with top piece (15), is connected with flexible loop bar group between the right side of pressure release inner core (9) and the left side of top piece (15), and the outside cover of flexible loop bar group is equipped with pressure spring, and pressure spring connects the right side of pressure release inner core (9) and the left side of top piece (15), the top outer wall welding of pressure release section of thick bamboo (8) has oil extraction joint (12), and oil extraction joint (12) communicate the inside of pressure release section of thick bamboo (8), and hydraulic fluid port (11) have been seted up to the top outer wall of pressure release inner core (9).

2. The oil cylinder with the pressure buffering internal release structure as claimed in claim 1, wherein: the lower part of the inner wall of the cylinder body (1) is integrally formed with a circular buffering top seat limiting ring (7), and the buffering top seat (5) is tightly attached to the lower surface of the buffering top seat limiting ring (7).

3. The oil cylinder with the pressure buffering internal release structure as claimed in claim 2, wherein: the upper surface of the buffering footstock (5) is bonded with an elastic rubber block which penetrates through the middle of the buffering footstock limiting ring (7).

4. The oil cylinder with the pressure buffering internal release structure as claimed in claim 1, wherein: the adjusting screw rod (14) and the pressure relief cylinder (8) are coaxial, and a hexagonal bolt head is arranged at the right end of the adjusting screw rod (14).

5. The oil cylinder with the pressure buffering internal release structure as claimed in claim 1, wherein: the outer wall of the pressure relief inner core (9) is in sliding contact with the inner wall of the pressure relief cylinder (8) in a matched mode, and the top sheet (15) is in sliding contact with the inner wall of the pressure relief cylinder (8).

6. The oil cylinder with the pressure buffering internal release structure as claimed in claim 1, wherein: the inner wall welding of left side port department of pressure release section of thick bamboo (8) has annular pressure release inner core spacing ring (10), and the right side wall of pressure release inner core spacing ring (10) is hugged closely to the left side end of pressure release inner core (9).