CN216207356U

CN216207356U - Pressure maintaining measuring device for single hydraulic prop

Info

Publication number: CN216207356U
Application number: CN202122688626.4U
Authority: CN
Inventors: 温荣升; 孙林
Original assignee: Xuzhou Tianneng Electrical Mechanical Co ltd
Current assignee: Xuzhou Tianneng Electrical Mechanical Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-04-05
Anticipated expiration: 2031-11-05

Abstract

The utility model discloses a single hydraulic prop pressure maintaining measuring device which comprises a cover plate and a cylinder seat, wherein the lower surface of the cylinder seat is provided with a cylindrical inner hole, the side wall of the cylindrical inner hole is provided with a sealing ring, a piston is arranged inside the cylindrical inner hole, the upper surface of the piston is provided with a cylindrical hole, a return spring is arranged between the bottom of the cylindrical hole and the cylinder seat, and the lower surface of the cylinder seat is fixedly connected with a guide plate through a first countersunk screw; the piston moves in the cylindrical inner hole in the cylinder seat, so that grease in the inner cavity enters the pressure gauge through the liquid pipe, and a worker can directly observe the reading of the pressure gauge to obtain the sealing effect of the single hydraulic column.

Description

Pressure maintaining measuring device for single hydraulic prop

Technical Field

The utility model relates to the technical field of detection of single hydraulic props, in particular to a pressure maintaining measuring device for the single hydraulic prop.

Background

The single hydraulic prop is necessary equipment for supporting the working face and the roadway of the underground coal mine, coal miners work in the supporting space, the requirement on safety performance is high, and after maintenance of each newly manufactured single hydraulic prop and an old single hydraulic prop, low-pressure sealing performance and high-pressure sealing performance detection must be carried out to check whether the leakage problem of a sealing part exists or not, so that the safety of the workers during working is ensured.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a single hydraulic prop pressure maintaining measuring device to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a hydraulic prop pressurize measuring device, includes apron and jar seat, cylindrical hole has been seted up to the lower surface of jar seat, the sealing washer is installed to the lateral wall of cylindrical hole, the inside of cylindrical hole is equipped with the piston, the cylinder hole has been seted up to the upper surface of piston, the bottom in cylinder hole with install reset spring between the jar seat, the lower surface of jar seat is through first countersunk screw fixedly connected with baffle, the piston rod of piston runs through the hole of baffle, the upper surface of apron through second countersunk screw fixed connection in the tailpiece of the piston rod portion of piston, jar seat one side is equipped with leads to the liquid pipe, the manometer is installed to the one end that leads to the liquid pipe, the other end that leads to the liquid pipe with the liquid through hole intercommunication that jar seat one side was seted up.

As further preferable in the present technical solution: the pressure maintaining measuring device is installed at the top of the single hydraulic prop, and loading frames are arranged on the outer sides of the single hydraulic prop and the pressure maintaining measuring device.

As further preferable in the present technical solution: and grease is filled in a cavity formed by the piston and the cylinder seat and the inner part of the liquid through pipe.

As further preferable in the present technical solution: the piston, the inner diameter of the cylinder seat and the inner hole of the guide plate are in small-clearance sliding fit.

As further preferable in the present technical solution: and connecting nuts are arranged at the two ends of the liquid through pipe.

Compared with the prior art, the utility model has the beneficial effects that: the piston moves in the cylindrical inner hole in the cylinder seat, so that grease in the inner cavity enters the pressure gauge through the liquid pipe, and a worker can directly observe the reading of the pressure gauge to obtain the sealing effect of the single hydraulic column.

Drawings

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

FIG. 2 is a schematic connection diagram of the present invention in a pressure holding experiment;

as shown in the figure: 1. a cover plate; 2. a first countersunk screw; 3. a seal ring; 4. a second countersunk screw; 5. a return spring; 6. a guide plate; 7. a piston; 8. a cylinder base; 9. a liquid pipe is communicated; 10. a connecting nut; 11. a pressure gauge; 12. loading a frame; 13. a single hydraulic prop.

Detailed Description

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "one end", "the other end", "both sides", "both ends", and the like herein indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "disposed," "connected," and the like are used in a broad sense, and for example, "connected" may be fixedly connected, detachably connected, integrally connected, mechanically connected, or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

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

As shown in fig. 1-2, the present invention provides a technical solution: the utility model provides a hydraulic prop pressurize measuring device, including apron 1 and jar seat 8, cylindrical hole has been seted up to the lower surface of jar seat 8, sealing washer 3 is installed to the lateral wall of cylindrical hole, the inside of cylindrical hole is equipped with piston 7, the cylinder hole has been seted up to the upper surface of piston 7, install reset spring 5 between the bottom in cylinder hole and the jar seat 8, the lower surface of jar seat 8 is through 2 fixedly connected with baffle 6 of first countersunk screw, the piston rod of piston 7 runs through the hole of baffle 6, the upper surface of apron 1 passes through 4 fixed connection in the tailpiece of the piston rod portion of piston 7 of second countersunk screw, 8 one side of jar seat is equipped with liquid through pipe 9, manometer 11 is installed to the one end of liquid through pipe 9, the liquid through hole intercommunication that the other end of liquid through pipe 9 and jar seat 8 one side were seted up.

In this embodiment, specifically: the pressure maintaining measuring device is arranged at the top of the single hydraulic prop 13, and the loading frame 12 is arranged outside the single hydraulic prop 13 and the pressure maintaining measuring device.

In this embodiment, specifically: the cavity formed by the piston 7 and the cylinder seat 8 and the interior of the liquid through pipe 9 are filled with grease.

In this embodiment, specifically: the inner diameters of the piston 7 and the cylinder seat 8 and the inner hole of the guide plate 6 are all in small-clearance sliding fit.

In this embodiment, specifically: and connecting nuts 10 are arranged at both ends of the liquid through pipe 9.

In addition, the utility model can also be fixed at one end of the loading frame 12 through an external detection device, directly display the pressure, and measure a plurality of single hydraulic supports, thereby greatly improving the working efficiency.

The working principle of the utility model is as follows: when the device is used, the device is arranged at the top of a single hydraulic support 13, then the device and the single hydraulic support 13 are placed inside a loading frame 12, the sealing ring 3 in the utility model is used for sealing grease between a piston 7 and a cylinder seat 8, after an external load loads the piston 7 through a cover plate 1, pressure generated by the grease enters a pressure gauge 11 through a liquid through pipe 9 and a connecting nut 10 to push a gauge needle to rotate to display a pressure value, after the external load is removed, a return spring 5 pushes the piston 7 to return, the gauge needle of the pressure gauge 11 returns to a zero position and is kept for a certain time, if the sealing part of the single hydraulic support 13 leaks, the pressure of an inner cavity can be gradually reduced, and as long as the change of the pressure can be detected, the single hydraulic support with a sealing problem can be found.

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a hydraulic prop pressurize measuring device, includes apron (1) and jar seat (8), its characterized in that: the lower surface of the cylinder base (8) is provided with a cylindrical inner hole, the side wall of the cylindrical inner hole is provided with a sealing ring (3), a piston (7) is arranged in the cylindrical inner hole, a cylindrical hole is formed in the upper surface of the piston (7), a return spring (5) is arranged between the bottom of the cylindrical hole and the cylinder seat (8), the lower surface of the cylinder seat (8) is fixedly connected with a guide plate (6) through a first countersunk head screw (2), a piston rod of the piston (7) penetrates through an inner hole of the guide plate (6), the upper surface of the cover plate (1) is fixedly connected to the end part of the piston rod of the piston (7) through a second countersunk head screw (4), a liquid through pipe (9) is arranged on one side of the cylinder seat (8), a pressure gauge (11) is arranged at one end of the liquid through pipe (9), the other end of the liquid through pipe (9) is communicated with a liquid through hole arranged on one side of the cylinder base (8).

2. The apparatus according to claim 1, wherein: the pressure maintaining measuring device is installed at the top of the single hydraulic prop (13), and loading frames (12) are arranged on the outer sides of the single hydraulic prop (13) and the pressure maintaining measuring device.

3. The apparatus according to claim 1, wherein: the cavity formed by the piston (7) and the cylinder seat (8) and the interior of the liquid through pipe (9) are filled with grease.

4. The apparatus according to claim 1, wherein: the inner diameters of the piston (7) and the cylinder seat (8) and the inner hole of the guide plate (6) are in small-clearance sliding fit.

5. The apparatus according to claim 1, wherein: and connecting nuts (10) are installed at the two ends of the liquid through pipe (9).