CN210317983U

CN210317983U - Piston type actuating mechanism with buffer

Info

Publication number: CN210317983U
Application number: CN201921171829.2U
Authority: CN
Inventors: 朱粉华; 邹喜; 范小娟; 张千; 潘业雷
Original assignee: Wuxi Xhk Valve Co ltd
Current assignee: Wuxi Xhk Valve Co ltd
Priority date: 2019-07-24
Filing date: 2019-07-24
Publication date: 2020-04-14
Anticipated expiration: 2029-07-24

Abstract

The utility model discloses an actuating mechanism with a buffer piston, which comprises an air cylinder, wherein an upper end cover is fixedly arranged at the top end of the air cylinder, a piston rod is fixedly arranged at the middle part of a panel at the top end of the upper end cover, supporting rods are arranged at both sides of the piston rod, a baffle is fixedly connected between the top ends of the supporting rods at both sides, a gasket is fixedly arranged on the outer surface of the piston rod, an inner hexagonal fastening bolt is fixedly arranged on the upper surface of the gasket, a first upper spring seat is sleeved on the outer wall at both sides of the top end of the piston rod, a second upper spring seat is arranged below the first upper spring seat, and a second-stage spring is fixedly connected between the first upper spring seat and the second upper spring seat, the actuating mechanism effectively relieves the impact force when the air cylinder works up and down by utilizing the elasticity, the damping valve can be widely applied to three-way regulating valves, double-seat regulating valves and occasions where mechanical equipment needs cylinder buffering.

Description

Piston type actuating mechanism with buffer

Technical Field

The utility model relates to a piston actuating device technical field, in particular to area buffering piston actuating mechanism.

Background

When current buffering piston actuating mechanism removed the cylinder top at cylinder piston, through closing the great main gas port of cross sectional area of ventilating, the compressed air of forcing flows from the less buffering mouth of cross sectional area of ventilating, thereby make the piston slow down the rate of motion and reach the buffering purpose, because main gas port is great with buffering gas port cross sectional area difference, when the gas port switches, the buffer strength change is great, the action is unsmooth, easily produces the impact shock, and can only make the piston realize the buffering at the top, easily produce the problem of impact shock when buffering in order to solve the cylinder, the utility model provides a take buffering piston actuating mechanism.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art's defect, provide and take buffering piston actuating mechanism.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model discloses a take buffering piston actuating mechanism, which comprises a cylinder, cylinder top fixed mounting has the upper end cover, the upper end cover is kept away from cylinder one end panel middle part fixed mounting and is had the piston rod, the piston rod both sides all are equipped with bracing piece, both sides fixedly connected with baffle between the bracing piece top, piston rod surface fixed mounting has the gasket, fixed surface installs the tight set bolt of interior hexagonal on the gasket, piston rod top both sides outer wall all overlaps and is equipped with the spring holder of going up No. one, it is equipped with the spring holder of going up No. two to go up the spring holder below No. one, go up the spring holder and go up fixedly connected with second grade spring between the spring holder No. two, the outside cover of second grade spring is equipped with the spacer, piston rod.

As a preferred technical scheme of the utility model, No. two lower spring holder below are equipped with spring holder down, fixedly connected with one-level spring between spring holder and the No. two lower spring holders down, the outside cover of one-level spring is equipped with down the spacer.

As an optimal technical scheme of the utility model, No. two equal threaded connection of last spring holder bottom end panel and No. two lower spring holder top end panels have adjusting nut.

As a preferred technical scheme of the utility model, two adjusting nut passes spring holder and two lower spring holders in order to fix these two spring holders on two numbers respectively.

The utility model discloses the beneficial effect who reaches is: the buffering piston type actuating mechanism effectively relieves the impact force of the cylinder during up-down movement by utilizing the elasticity of the spring, has simple structure and convenient manufacture, and can adjust the compression amount of the first-level spring and the second-level spring by adjusting two adjusting nuts on the piston rod, thereby changing the buffering force size of the actuating mechanism, and being widely applied to three-way adjusting valves, double-seat adjusting valves and mechanical equipment in occasions requiring cylinder buffering.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of the internal structure of the present invention;

fig. 2 is an enlarged schematic view of the area a of the present invention.

In the figure: 1. a cylinder; 2. an upper end cover of the cylinder; 3. a support bar; 4. a piston rod; 5. a gasket; 6. a spring; 7. a baffle plate; 8. a first lower spring seat; 9. a second lower spring seat; 10. a lower spacer bush; 11. a primary spring; 12. a first upper spring seat; 13. a second upper spring seat; 14. arranging a spacer bush; 15. a secondary spring; 16. and adjusting the nut.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example 1

As shown in fig. 1-2, area buffering piston actuating mechanism, including

cylinder

1, 1 top fixed mounting of cylinder has

upper end cover

2, 1 end panel middle part fixed mounting of cylinder has piston rod 4 is kept away from to

upper end cover

2, 4 both sides of piston rod all are equipped with bracing piece 3, fixedly connected with baffle 7 between the bracing piece 3 top of both sides, 4 outer fixed surface of piston rod installs gasket 5, surface fixed mounting has interior hexagonal holding bolt 6 on

gasket

5, 4 top both sides outer walls of piston rod all overlap and are equipped with spring holder 12 on No. one, spring holder 12 below is equipped with spring holder 13 on No. two, fixedly connected with second grade spring 15 between spring holder 12 and the spring holder 13 on No. one, 15 outside covers of second grade spring are equipped with spacer 14, the outer wall cover in 4 below both sides of piston rod is equipped with spring holder 9.

Spring holder 9 below is equipped with spring holder 8 down No. two, fixedly connected with one-level spring 11 between spring holder 8 and the spring holder 9 down No. one, 11 outside covers of one-level spring are equipped with spacer sleeve 10 down, No. two go up spring holder 13 bottom end panel and the equal threaded connection of spring holder 9 top end panel down have adjusting nut 16, two adjusting nut 16 pass spring holder 13 and the spring holder 9 down with fixed these two spring holders on No. two respectively, have the effect of adjusting one-level spring and second grade spring compression volume concurrently.

Specifically, when the cylinder 1 works upwards, the piston rod 4 drives each spring seat to move upwards, after the first upper spring seat 12 is tightly combined with the baffle 7, the piston rod 4 continues to move upwards, the second-stage spring 15 is compressed under the action of the piston rod 4 and the first upper spring seat 12, the upward movement speed of the cylinder 1 is gradually reduced, so that the buffering effect is achieved, the upward impact force of the cylinder 1 is reduced, when the cylinder 1 works downwards, the piston rod 4 drives each spring seat to move downwards, after the first lower spring seat 8 is tightly combined with the upper end cover 2 of the cylinder 1, the piston rod 4 continues to move downwards, the first-stage spring 11 is compressed under the action of the piston rod 4 and the second lower spring seat 9, so that the downward movement speed of the cylinder 1 is gradually reduced, so that the buffering effect is achieved, the downward impact force of the cylinder 1 is reduced, and meanwhile, the adjusting nut 16 is arranged to rotate, when the adjusting nut 16 rotates, the two adjusting nuts 16 respectively abut against the second upper spring seat 13 and the second lower spring seat 9, so that the first-stage spring 11 and the second-stage spring 15 between the two spring seats are compressed, and the buffering force of the actuating mechanism is changed.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The actuating mechanism with the buffer piston is characterized by comprising a cylinder (1), wherein an upper end cover (2) is fixedly mounted at the top end of the cylinder (1), a piston rod (4) is fixedly mounted in the middle of a panel at the end, far away from the cylinder (1), of the upper end cover (2), supporting rods (3) are arranged on two sides of the piston rod (4), a baffle (7) is fixedly connected between the top ends of the supporting rods (3) on two sides, a gasket (5) is fixedly mounted on the outer surface of the piston rod (4), an inner hexagonal fastening bolt (6) is fixedly mounted on the upper surface of the gasket (5), a first upper spring seat (12) is sleeved on the outer walls of two sides of the top end of the piston rod (4), a second upper spring seat (13) is arranged below the first upper spring seat (12), and a second spring (15) is fixedly connected between the first, an upper spacer bush (14) is sleeved outside the secondary spring (15), and a second lower spring seat (9) is sleeved on the outer walls of two sides below the piston rod (4).

2. The actuator with the buffer piston as claimed in claim 1, characterized in that a first lower spring seat (8) is arranged below the second lower spring seat (9), a first spring (11) is fixedly connected between the first lower spring seat (8) and the second lower spring seat (9), and a lower spacer (10) is sleeved outside the first spring (11).

3. The damped piston actuator of claim 1, wherein an adjusting nut (16) is threadedly connected to each of a bottom end plate of the second upper spring seat (13) and a top end plate of the second lower spring seat (9).

4. A damped piston actuator according to claim 3, wherein two of the adjustment nuts (16) are threaded through the upper spring seat number two (13) and the lower spring seat number two (9), respectively, to secure the two spring seats.