CN213239371U

CN213239371U - Air tightness detection device for hydraulic cylinder

Info

Publication number: CN213239371U
Application number: CN202022663924.3U
Authority: CN
Inventors: 苏长顺; 何建霞
Original assignee: Tianjin Zhantuo Machinery Equipment Co ltd
Current assignee: Tianjin Zhantuo Machinery Equipment Co ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-05-18
Anticipated expiration: 2030-11-17

Abstract

The utility model discloses a gas tightness detection device for hydraulic cylinder, comprising a main body, the vertical installation piece that sets up in main part top one side, installation piece lateral wall is improved level and is set up the spring, it sets up first spout to lie in the spring below in the main part, the fixed slider and the slider of setting up of spring free end pass through first spout sliding connection with the main part, the vertical spliced pole that sets up in slider top, installation piece top lies in slider top level and sets up indicating device, the indicating device bottom sets up the second spout, the spliced pole top free end passes second spout and level and sets up branch, the branch free end rotates and sets up the guide pulley, guide pulley outside suit sets up the cable wire. The pressure maintaining device has the advantages that the traditional pressure maintaining and measuring detection is changed into the mechanical indicating device through the pulley mechanism in the indicating device, the length of a pressure maintaining loop is shortened, the sealing performance of the pressure maintaining loop is improved, the sealing performance can be visually indicated through the indicating block, and the pressure maintaining device is simple in structure, easy and convenient to operate and convenient for maintenance personnel to use and maintain.

Description

Air tightness detection device for hydraulic cylinder

Technical Field

The utility model belongs to the technical field of the pneumatic cylinder detects, especially, relate to a gas tightness detection device for hydraulic cylinder.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems. Because the hydraulic cylinder is generally sealed by using a sealing ring, the sealing performance is determined by the performance of the sealing ring and whether the installation is qualified, the sealing performance of the hydraulic cylinder needs to be detected when the hydraulic cylinder is assembled and repaired so as to determine whether the sealing performance is qualified. The normal detection method is to perform a pressure maintaining test on a positive cavity and a negative cavity of the oil cylinder, observe whether the pressure in the cylinder is reduced within a specified time, and if the pressure is not reduced, the method indicates that no inner leakage exists and the sealing property is good. Because a plurality of check valves, overflow valves and the like are used in the pressure maintaining loop, the pressure maintaining loop is integrally longer, the tightness of the loop is difficult to ensure, the detection result is inaccurate, and the maintenance is difficult, so that the airtightness detection device for the hydraulic cylinder needs to be designed to solve the problems.

SUMMERY OF THE UTILITY MODEL

The to-be-solved problem of the utility model is to provide a gas tightness detection device for hydraulic cylinder.

In order to solve the technical problem, the utility model discloses a technical scheme is:

a tightness detection device for a hydraulic cylinder comprises a main body, wherein an installation block is vertically arranged on one side of the top of the main body, a spring is horizontally arranged on one side wall of the installation block, a first chute is arranged below the spring on the main body, a sliding block is fixedly arranged at the free end of the spring and is in sliding connection with the main body through the first chute, a connecting column is vertically arranged at the top of the sliding block, the top of the installation block is positioned above the sliding block and is horizontally provided with an indicating device, a second chute is arranged at the bottom of the indicating device, the free end of the top of the connecting column penetrates through the second chute and is horizontally provided with a supporting rod, the free end of the supporting rod is rotatably provided with a guide wheel, a steel cable is sleeved outside the guide wheel, an indicating block is arranged at the top of the inner side of the indicating device in a sliding manner above the supporting rod, one end, the side wall of the indicating device is fixedly provided with a tension spring above the steel cable, the other end of the tension spring is fixedly arranged with the lower part of one side wall of the indicating block, the side wall of the indicating device is fixedly provided with an observation window at one side of the indicating block, the main body is provided with a support block at one end of the first chute in a sliding manner, the inner side wall of the main body is fixedly provided with a slide rail below the support block, the slide rail is provided with a push block in a sliding manner, the top of the push block is arranged with the bottom of the support block in a sliding manner, an adjusting bolt is rotatably arranged on one side wall of the main body, the free end of the adjusting bolt penetrates through the main body and is arranged at the outer side of the main body, the main body is provided with a fixed block at one side of the support block, a chuck is fixedly arranged at one side, the free end of the trachea passes through the side wall of the main body and is arranged outside the main body.

Preferably, the chuck is provided with three clamping teeth in a sliding manner.

Preferably, a handle is fixedly arranged at the free end of the adjusting bolt.

Preferably, the gas pipe is a metal corrugated pipe.

The utility model has the advantages and positive effects that:

the utility model discloses an inside pulley mechanism of indicating device detects traditional pressurize pressure measurement and changes mechanical indicating device into, makes pressurize return circuit length shorten, has improved the leakproofness in pressurize return circuit, can audio-visually instruct the leakproofness through instructing the piece, and the device still has simple structure moreover, and is easy and simple to handle, and the maintenance personal of being convenient for simultaneously uses and maintains.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is an isometric view of a tightness detecting device for a hydraulic cylinder according to the present invention;

fig. 2 is a front cross-sectional view of the air tightness detecting device for a hydraulic cylinder according to the present invention;

fig. 3 is a structural diagram of a push block of the air tightness detecting device for a hydraulic cylinder according to the present invention;

fig. 4 is a structure enlarger of A department of a gas tightness detection device for hydraulic cylinder.

The reference numerals are explained below:

1. a main body; 2. mounting blocks; 3. an indicating device; 301. connecting columns; 302. a strut; 303. a guide wheel; 304. an indication block; 305. a steel cord; 306. a tension spring; 307. an observation window; 308. a second chute; 4. a slider; 5. a first chute; 6. a spring; 7. a support block; 8. a push block; 9. a slide rail; 10. adjusting the bolt; 11. a handle; 12. a fixed block; 13. a chuck; 14. clamping teeth; 15. an air pump; 16. the trachea.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

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

example 1

As shown in FIGS. 1-4, a tightness detecting device for a hydraulic cylinder comprises a main body 1, a mounting block 2 is vertically arranged on one side of the top of the main body 1, a spring 6 is horizontally arranged on one side wall of the mounting block 2, a first chute 5 is arranged on the main body 1 below the spring 6, a slider 4 is fixedly arranged at the free end of the spring 6, the slider 4 is slidably connected with the main body 1 through the first chute 5, a connecting column 301 is vertically arranged at the top of the slider 4, an indicating device 3 is horizontally arranged at the top of the mounting block 2 above the slider 4, a second chute 308 is arranged at the bottom of the indicating device 3, the free end of the top of the connecting column 301 passes through the second chute 308 and is horizontally provided with a supporting rod 302, a guide wheel 303 is rotatably arranged at the free end of the supporting rod 302, a steel cable 305 is sleeved outside the guide wheel 303, an indicating block 304 is slidably arranged at the top of the inner side of the, the side wall of the indicating device 3 is fixedly provided with a tension spring 306 above the steel cable 305, the other end of the tension spring 306 is fixedly arranged with the lower part of one side wall of the indicating block 304, the side wall of the indicating device 3 is fixedly provided with an observation window 307, the end of the main body 1, which is positioned at the first chute 5, is provided with a supporting block 7 in a sliding manner, the inner side wall of the main body 1 is fixedly provided with a sliding rail 9 below the supporting block 7, the sliding rail 9 is provided with a pushing block 8 in a sliding manner, the top of the pushing block 8 is slidably arranged with the bottom of the supporting block 7, and a side wall of the pushing block is rotatably provided with an adjusting bolt 10, the free end of the adjusting bolt 10 passes through the main body 1 and is arranged outside the main body 1, the side of the supporting block 7 on the main body 1 is provided with a fixed block 12, the side wall of the fixing block 12 is fixedly provided with a chuck 13.

The working process of the embodiment: when in use, one end of the hydraulic cylinder is placed into the chuck 13, the position of the latch 14 is adjusted to clamp the hydraulic cylinder, then the handle 11 is rotated to drive the adjusting bolt 10 to rotate, so that the push block 8 slides in the slide rail 9, and the push block 8 is pushed upwards to support the hydraulic cylinder, then the air pipe 16 is connected with the hydraulic cylinder, the air pump 15 is started to inflate the hydraulic cylinder, the piston of the hydraulic cylinder extends to push the sliding block 4 to compress the spring 6, meanwhile, the connecting column 301 drives the supporting rod 302 to move, the steel cable 305 drags the indicating block 304 to move and stretches the tension spring 306, stopping the inflation and maintaining the pressure after the indicator block 304 moves to a designated position, observing whether the indicator block 304 moves, exhausting the air in the hydraulic cylinder after the use is finished, then the spring 6 is extended to push the slide block 4 to reset, the tension spring 306 is shortened to drive the indicating block 304 to reset, and then the hydraulic cylinder is taken down from the chuck 13 after the air pipe 16 is removed.

Preferably, the chuck 13 is slidably provided with three latch teeth 14, the free end of the adjusting bolt 10 is fixedly provided with the handle 11, and the air pipe 16 is a metal corrugated pipe.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. The utility model provides a gas tightness detection device for hydraulic cylinder, includes main part (1), its characterized in that: the steel cable guide device is characterized in that an installation block (2) is vertically arranged on one side of the top of a main body (1), a spring (6) is horizontally arranged on one side wall of the installation block (2), a first sliding groove (5) is formed in the main body (1) and is located below the spring (6), a sliding block (4) is fixedly arranged at the free end of the spring (6), the sliding block (4) is in sliding connection with the main body (1) through the first sliding groove (5), a connecting column (301) is vertically arranged at the top of the sliding block (4), an indicating device (3) is horizontally arranged above the sliding block (4) at the top of the installation block (2), a second sliding groove (308) is formed in the bottom of the indicating device (3), the free end of the top of the connecting column (301) penetrates through the second sliding groove (308) and is horizontally provided with a supporting rod (302), a guide wheel (303) is rotatably arranged at the free end of, the top of the inner side of the indicating device (3) is positioned above the supporting rod (302) and is provided with an indicating block (304) in a sliding manner, one end of the steel cable (305) is fixedly connected with the lower part of the side wall of the indicating block (304) while the other end of the same is fixedly connected with the side wall of the indicating device (3), an extension spring (306) is fixedly arranged above the steel cable (305) on the side wall of the indicating device (3), the other end of the extension spring (306) is fixedly arranged with the lower part of the side wall of the indicating block (304), an observation window (307) is fixedly arranged on one side of the indicating block (304) on one side wall of the indicating device (3), a supporting block (7) is arranged on one end of the main body (1) in a sliding manner, a sliding rail (9) is fixedly arranged below the supporting block (7) on the inner side wall of the main body (1), and a, ejector pad (8) top with it sets up adjusting bolt (10) to rotate on the setting of tray (7) bottom slip and a lateral wall, adjusting bolt (10) free end passes main part (1) and arranges in main part (1) outside, lie in on main part (1) tray (7) one side sets up fixed block (12), lie in on a lateral wall of fixed block (12) tray (7) one side is fixed and is set up chuck (13), main part (1) inboard bottom is fixed and is set up air pump (15), air pump (15) output end is fixed and is set up trachea (16), trachea (16) free end passes main part (1) lateral wall is arranged in the main part (1) outside.

2. The air-tightness detecting device for the hydraulic cylinder according to claim 1, characterized in that: the chuck (13) is provided with clamping teeth (14) in a sliding mode, and the number of the clamping teeth (14) is three.

3. The air-tightness detecting device for the hydraulic cylinder according to claim 1, characterized in that: and a handle (11) is fixedly arranged at the free end of the adjusting bolt (10).

4. The air-tightness detecting device for the hydraulic cylinder according to claim 1, characterized in that: the air pipe (16) is a metal corrugated pipe.