CN210599667U

CN210599667U - Actuator cylinder with built-in mechanical locks at two ends

Info

Publication number: CN210599667U
Application number: CN201921587346.0U
Authority: CN
Inventors: 张志刚; 高娇; 杜伟; 陈晓娟
Original assignee: Guizhou Longfei Aviation Accessories Co ltd
Current assignee: Guizhou Longfei Aviation Accessories Co ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-05-22
Anticipated expiration: 2029-09-24

Abstract

The utility model discloses an actuating cylinder with built-in mechanical locks at two ends, which comprises an outer cylinder, a piston rod, a floating piston, a nut, an expansion ring, a steel ball, an end cover and an elastic component, wherein one end of the piston rod is arranged in an inner cavity, and the other end of the piston rod extends to the outer side of the outer cylinder; the piston rod is provided with a floating piston, and a locking groove is also arranged in the piston rod along the axial direction of the piston rod; the outer cylinder is provided with an end cover, a liquid storage cavity and a liquid injection channel communicated with the liquid storage cavity are also arranged in the end cover, and the liquid storage cavity is communicated with the inner cavity in the outer cylinder; a nut is also arranged in the inner cavity of the end cover and is connected with the locking groove through an elastic component; the piston rod is also provided with a steel ball groove, the steel ball is arranged in the steel ball groove, and the movable piston and the piston rod are matched with an elastic component through the steel ball, so that the actuating cylinder is in a locking state under the action of the piston ring. Adopt the pressurized strut, have simple structure, operation and convenient to use, the locking is reliable.

Description

Actuator cylinder with built-in mechanical locks at two ends

Technical Field

The utility model belongs to the technical field of aviation transmission system technique and specifically relates to an actuator cylinder of built-in mechanical lock in both ends.

Background

Many actuating cylinders in hydraulic or pneumatic control motion mechanisms on modern aviation, aerospace or ship equipment and the like are internally integrated with mechanical locking devices, and the mechanical locking devices are used for pushing functional elements on the equipment to a specified position and then fixing the functional elements or pulling the functional elements to the specified position and then fixing the functional elements so as to enable the functional elements to complete specified functions or tasks. During the push-pull movement of the functional element, the drive system is used for completing the push-pull movement. Therefore, the transmission system is an intermediate device between the power machine and the actuator, and generally, transmission mainly for transmitting power is called power transmission, and transmission mainly for transmitting motion is called motion transmission. The actuator cylinder is an important functional part in the aircraft landing gear, and the performance stability and safety of the aircraft are directly affected by the quality of the actuator cylinder.

With the development of modern technology, hydraulic cylinders used in retraction mechanisms or opening and closing mechanisms of many mechanical devices are mostly cylinders with built-in mechanical locks, and when a piston (or a piston rod) moves to an extreme position, the piston (or the piston rod) is firmly fixed by the mechanical lock device built in the cylinder so as to be incapable of moving. The actuating cylinder has the advantages of automatic locking and hydraulic passive unlocking in the use process. Because the function of the actuating cylinder is realized by the built-in mechanical lock in the processes of folding, unfolding and opening, when the piston or the piston rod moves to the limit position, the piston or the piston rod is firmly fixed by the built-in mechanical lock device in the actuating cylinder, so that the piston or the piston rod cannot act. The actuating cylinder has the advantages of automatic locking and hydraulic passive unlocking in the use process, and is widely applied to general engineering machinery. Therefore, the control system for the folding and unfolding mechanism is simple, convenient to operate, simple and compact in structure, complete in function, reliable in quality, stable in performance, long in service life, light in weight, easy to maintain, low in manufacturing and using cost, and capable of meeting the requirements of safely and quickly folding or unfolding the mechanism in an emergency state. Therefore, modern use requirements have not been met with conventional rams.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to the problem that exists among the background art, provide a simple structure, operation and convenient to use, the motion is steady, locks reliable pressurized strut structure, avoids because of the mechanical lock in the pressurized strut basically can't open and cause the phenomenon that equipment accident appears, improves the security that receive and releases or closing mechanism, specifically speaking is the pressurized strut of the built-in mechanical lock in both ends.

For solving the technical problem, the utility model discloses the technical scheme who adopts does: an actuating cylinder with mechanical locks arranged in two ends comprises an outer cylinder, a piston rod, a traveling piston, a nut, an expansion ring, a steel ball, an end cover and an elastic component, wherein the outer cylinder is provided with an inner cavity, one end of the piston rod is arranged in the inner cavity, and the other end of the piston rod extends to the outer side of the outer cylinder; the piston rod is provided with a floating piston capable of moving back and forth at the end part of the piston rod, and the piston rod is also provided with a locking groove along the axial direction; the outer barrel is provided with an end cover with an inner cavity, a liquid storage cavity is also arranged in the end cover, a liquid injection channel communicated with the liquid storage cavity is arranged on the end face of the end cover, and the liquid storage cavity is communicated with the inner cavity in the outer barrel; a nut connected with the elastic component is further arranged in the inner cavity of the end cover, and the nut is connected with the locking groove through the elastic component; the piston rod is also provided with a steel ball groove communicated with the locking groove, the steel ball is arranged in the steel ball groove, and the movable piston and the piston rod are matched with an elastic component through the steel ball, so that the actuating cylinder is in a locking state under the action of the piston ring.

Further, an actuator cylinder of built-in mechanical lock in both ends, wherein elastomeric element is including bush and elastic element, elastic element passes through the bush and sets up the locked groove in the piston rod, the piston rod drives the piston that moves about under hydraulic pressure effect and can follow the inner chamber and do reciprocating motion, under the effect of steel ball, drives elastic element by the bush and removes in the locked groove, at the piston removal in-process that moves about, realizes through the piston ring that the piston rod is in the pinning state.

Furthermore, the utility model discloses an actuator cylinder of built-in mechanical lock in both ends, wherein elastic element is suit in nut and locked groove's two sets of reset spring.

Furthermore, the present invention provides a cylinder with a mechanical lock built in two ends, wherein the piston rod has two piston rings, which are a left piston ring and a right piston ring, the left piston ring is disposed in a floating piston near one side of the nut, a retainer is disposed at an end of the piston rod, and the right piston ring is disposed in the piston rod through the retainer and corresponds to the floating piston; and a clamping groove corresponding to the steel ball groove is arranged in the floating piston.

Adopt an actuating cylinder of built-in mechanical lock in both ends, through reset spring, piston ring and the steel ball that sets up, pass through between piston and the piston rod move about steel ball and elastomeric element's cooperation, under the effect of piston ring, can realize that the actuating cylinder is in the locking state, can avoid causing the phenomenon that the equipment accident appears because of the mechanical lock in the actuating cylinder is originally unable to be opened. Actuator cylinder, have simple structure, operation and convenient to use, its motion is steady, the locking is reliable, can reduce manufacturing and use cost, can improve its security, its practicality is strong, is particularly suitable for popularization and application.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

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

fig. 2 is a schematic view of a part a of fig. 1.

Shown in the figure: 1-outer cylinder, 11-inner cavity, 2-piston rod, 21-locking groove, 22-steel ball groove, 3-floating piston, 31-clamping groove, 4-bush, 5-nut, 6-reset spring, 7-piston ring, 71-left piston ring, 72-right piston ring, 8-steel ball, 9-end cover, 91-liquid storage cavity, 92-liquid injection channel and 10-retainer.

Detailed Description

To further illustrate the concept of the present invention, the following embodiments of the present invention will be further described with reference to the accompanying drawings:

as shown in fig. 1 and 2, the actuator cylinder of a mechanical lock with built-in two ends of the present invention comprises an outer cylinder 1, a piston rod 2, a floating piston 3, a nut 5, an expansion ring 7, a steel ball 8, an end cap 9 and an elastic component, wherein the outer cylinder 1 has an inner cavity 11, one end of the piston rod 2 is disposed in the inner cavity 11, and the other end extends to the outside of the outer cylinder 1; a traveling piston 3 capable of reciprocating at the end of the piston rod 2 is arranged on the piston rod 2, and a locking groove 21 is also arranged in the piston rod 2 along the axial direction; an end cover 9 with an inner cavity is arranged on the outer cylinder 1, a liquid storage cavity 91 is also arranged in the end cover 9, a liquid injection channel 92 communicated with the liquid storage cavity 91 is arranged on the end face of the end cover 9, and the liquid storage cavity 91 is communicated with the inner cavity 11 in the outer cylinder 1; a nut 5 connected with the elastic component is further arranged in the inner cavity of the end cover 9, and the nut 5 is connected with the locking groove 21 through the elastic component; the piston rod 2 is also provided with a steel ball groove 22 communicated with a locking groove 21 of the piston rod 2, the steel ball 8 is arranged in the steel ball groove 22, and the movable piston 3 and the piston rod 2 are matched with an elastic component through the steel ball 8 so as to realize that the actuating cylinder is in a locking state under the action of the piston ring 7.

Further, an actuator cylinder of built-in mechanical lock in both ends, wherein elastomeric element is including bush 4 and elastic element, elastic element passes through bush 4 and sets up in the locked groove 21 in piston rod 2, piston rod 2 drives the piston 3 that moves about under the hydraulic pressure effect and can follow inner chamber 11 and do reciprocating motion, under the effect of steel ball 8, drives elastic element by bush 4 and removes in locked groove 21, at the piston 3 removal in-process that moves about, realizes through piston ring 7 that piston rod 2 is in the pinning state.

Furthermore, the present invention relates to an actuator cylinder with a mechanical lock built in both ends, wherein the elastic element is two sets of return springs 6 sleeved in the nut 5 and the lock groove 21.

Furthermore, the present invention provides a cylinder with a mechanical lock built in two ends, wherein the piston ring 7 includes two, which are a left piston ring 71 and a right piston ring 72, wherein the left piston ring 71 is disposed in the floating piston 3 near one side of the nut 5, the end of the piston rod 2 is further provided with a retainer 10, and the right piston ring 72 is disposed in the piston rod 2 through the retainer 10 and corresponds to the floating piston 3; and a clamping groove 31 corresponding to the steel ball groove 22 is arranged in the floating piston 3.

In the practical application process, adopt the pressurized strut of the utility model, its theory of operation is: when the piston rod 2 moves to the left upper end under the hydraulic action of the actuating cylinder, the left return spring 6 is positioned at the locking groove 21 when the piston rod 2 reaches the extreme position. Under the action of pressure, the left end face of the floating piston 3 extrudes the left return spring 6 through the left piston ring 71, the return spring 6 is arranged in the lock groove 21 and locked through the left piston ring 71, meanwhile, the floating piston 3 presses the steel ball 8 to enable the bush 4 to move towards two sides, the return spring 6 is compressed, when the return spring 6 is positioned in the lock groove 21 and is in a locked state, the steel ball 8 also enters the steel ball groove 8 at the right end, the floating piston 3 is fixed, namely, the mechanical lock at the upper end of the left side of the actuating cylinder locks the piston rod 2 and cannot extend. When the actuator cylinder is put down, the floating piston 3 moves rightwards under the action of hydraulic pressure, the action of the reset spring 6 on the left side enables the left piston ring 71 to be loosened, the piston rod 2 moves downwards, the spring piston ring slides along the inner cavity of the outer cylinder until the piston rod 2 reaches the limit position, the right end face of the floating piston 3 is inserted into the inner diameter of the right piston ring 3, the right piston ring 72 is opened to be clamped in the retainer 10, the reset spring 6) on the right side is enabled to be in a compressed state, the floating piston 3 is fixed at the put-down position by the steel balls 8, at the moment, the right piston ring 72 is locked, and when the piston rod 2 receives the axial load on the take-up, the moving phenomenon cannot.

To sum up, adopt the actuator cylinder, through reset spring 6, piston ring 7 and the steel ball 8 that sets up, through between piston 3 and the piston rod 2 of moving about through steel ball 8 and elastomeric element's cooperation, under piston ring 7's effect, can realize that the actuator cylinder is in the locking state, can avoid causing the phenomenon that the equipment accident appears because of the mechanical lock in the actuator cylinder can't open at the root, have simple structure, operation and convenient to use, its motion is steady, the locking is reliable, can reduce manufacturing and use cost, can improve its security, its practicality is strong, is particularly suitable for popularization and application.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and those skilled in the art can make various modifications and changes, and any modifications, equivalent replacements, improvements, etc. made by using the present invention should be included in the protection scope of the present invention.

Claims

1. An actuating cylinder with a mechanical lock arranged in two ends is characterized in that: the outer cylinder (1) is provided with an inner cavity (11), one end of the piston rod (2) is arranged in the inner cavity (11), and the other end of the piston rod extends to the outer side of the outer cylinder (1); a traveling piston (3) capable of moving back and forth at the end part of the piston rod (2) is arranged on the piston rod (2), and a locking groove (21) is also arranged in the piston rod (2) along the axial direction; an end cover (9) with an inner cavity is arranged on the outer cylinder (1), a liquid storage cavity (91) is also arranged in the end cover (9), a liquid injection channel (92) communicated with the liquid storage cavity (91) is arranged on the end face of the end cover (9), and the liquid storage cavity (91) is communicated with the inner cavity (11) in the outer cylinder (1); a nut (5) connected with the elastic component is further arranged in the inner cavity of the end cover (9), and the nut (5) is connected with the locking groove (21) through the elastic component; piston rings (7) are mounted at the end parts of the floating piston (3) and the piston rod (2) in a pressure-equalizing manner, a steel ball groove (22) communicated with a locking groove (21) of the piston rod (2) is further formed in the piston rod (2), steel balls (8) are arranged in the steel ball groove (22), and the floating piston (3) and the piston rod (2) are matched with an elastic component through the steel balls (8), so that the actuating cylinder is locked under the action of the piston rings (7).

2. The actuator cylinder of a mechanical lock built-in at both ends as set forth in claim 1, wherein: the elastic component comprises a bushing (4) and an elastic element, the elastic element is arranged in a lock groove (21) in the piston rod (2) through the bushing (4), the piston rod (2) drives the floating piston (3) to reciprocate along the inner cavity (11) under the action of hydraulic pressure, the bushing (4) drives the elastic element to move in the lock groove (21) under the action of the steel ball (8), and the piston rod (2) is locked through the piston ring (7) in the moving process of the floating piston (3).

3. The actuator cylinder of a mechanical lock built-in at both ends as claimed in claim 2, wherein: the elastic elements are two groups of springs (6) sleeved in the nut (5) and the locking groove (21).

4. The actuator cylinder of a mechanical lock built-in at both ends as set forth in claim 1, wherein: the piston rod is characterized in that the piston ring (7) comprises two piston rings (71) and two right piston rings (72), wherein the left piston ring (71) is arranged in a floating piston (3) close to one side of the nut (5), a retainer (10) is further arranged at the end part of the piston rod (2), and the right piston ring (72) is arranged in the piston rod (2) through the retainer (10) and corresponds to the floating piston (3); and a clamping groove (31) corresponding to the steel ball groove (22) is arranged in the floating piston (3).