CN205310150U - Hydraulic support round pin axle dismounting device - Google Patents

Abstract

The utility model discloses a hydraulic support round pin axle dismounting device, including axial cylinder, pneumatic vibrator, weld holder and ball, adopt the semi -cylindrical sleeve to draw as the axial and drag the fulcrum, can realize axial displacement, whole vibration and local the rotation simultaneously. Pneumatic vibrator installs on the weld holder, and weld holder and the welding of ladder pin, ladder pin are installed in round pin axle head portion, ball passes through screw nut and is connected with the weld holder, plays the effect of automatic rotational pin axle when providing axial tension through the axial cylinder, semi -cylindrical sleeve and cylinder outer wall are fixed, and the other end leans on when the operation on the hydraulic support surface, provide the axial and draw and drag the fulcrum. The utility model discloses a compressed air can obviously improve the round pin axle and dismantle a work efficiency as the power supply, drags, twists reverse through drawing and vibrate combined operation, can improve once to dismantle the success rate, effectively avoid destructive and dismantle, solve difficult problems such as present hydraulic support round pin axle dismantlement difficulty.

Description

Hydraulic support pin removal device

technical field

The utility model belongs to the technical field of mining machinery, in particular to a hydraulic support pin dismounting device.

Background technique

The hydraulic support is a structure used to control the mine pressure in the coal mining face. The demand for large hydraulic supports in the market is increasing day by day. The large hydraulic supports are large in size and heavy in weight. During the manufacturing process, the large hydraulic supports need to be disassembled into components. , to facilitate repair, transportation, and downhole, but the disassembly of the hydraulic support pin is also a very difficult problem. The reasons for the difficulty of disassembly are as follows:

1. If the support is not used for a long time underground, the main structural parts of the hydraulic support will be hinged, the pin shaft will be seriously corroded, and small particles such as sand and dust in the well will easily enter the fitting gap to form a blockage;

2. The support has been used in the mine for a long time, resulting in severe corrosion and wear of the pin shaft connecting the top beam of the support and the cover beam, groove steps, and deformation and bending under pressure;

3. When taking out the pin shaft, there may be negative pressure in the inner blind hole, which makes it difficult to pull out.

At present, most of the existing hydraulic support pin removal tools use hydraulic cylinders to pull out the pin shaft by welding with the pin shaft. However, since the power source for on-site disassembly is hydraulic pressure, a pump station is required, which is inconvenient for maintenance, easy to leak, and pollutes a lot. The shaft itself has the above-mentioned difficult to disassemble and other problems, it is relatively difficult to pull out, and the welding part is often broken or the pin is pulled out. Therefore, the disassembly problem of the hydraulic support pin needs to be solved urgently. A safe and reliable pin disassembly device is invented. Underground safety production has important practical significance.

Utility model content

The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art, and provide a hydraulic support pin removal device with safe operation, safety and reliability.

There are many air ducts laid underground, and the air source is convenient and quick to use. A hydraulic support pin removal device uses compressed air as the power source, including an axial cylinder, a pneumatic vibrator, a welding frame, and a ball screw, and uses a semi-cylindrical sleeve. As the fulcrum of axial pulling, the cylinder can realize axial movement, overall vibration and partial rotation at the same time during the disassembly process of the pin shaft. The pneumatic vibrator is installed on the welding frame, the welding frame is welded with the stepped pin, the stepped pin is installed at the end of the pin shaft, the ball screw is connected with the welding frame through the screw nut, and the axial The cylinder provides axial pulling force and at the same time plays the role of automatically rotating the pin shaft. The sleeve is fixed to the outer wall of the cylinder through set screws, and the other end leans against the surface of the hydraulic support during operation to provide an axial pulling fulcrum.

As a further description of the above technical solution:

The axial cylinder and the vibrator use compressed air as a power source, and the cylinder is connected to the pin shaft through a ball screw and a welding frame to realize the axial movement of the pin shaft.

As a further description of the above technical solution:

The welding frame is a closed frame structure with a pneumatic vibrator on it. One end of the welding frame is welded on the pin, and the other end is connected to the axial cylinder through a ball screw.

As a further description of the above technical solution:

The pneumatic vibrator is connected to the pin shaft through a welding frame, which provides overall vibration during the disassembly process, increases the gap between the pin shaft and the shaft hole, and facilitates the disassembly operation of the axial cylinder.

As a further description of the above technical solution:

The ball screw is connected to the welding frame through the screw nut. During the disassembly process of the pin shaft, the axial cylinder is connected to the ball screw through the fixed pin shaft for axial movement, so that the welding frame and the pin shaft have a tendency to rotate or even rotate, which is beneficial Reduce the frictional force between the pin shaft and the shaft hole, so that the pin shaft can be pulled out smoothly.

As a further description of the above technical solution:

A semi-cylindrical sleeve is installed at the end of the axial cylinder, and the other end of the sleeve leans against the surface of the hydraulic support during operation to provide an axial pulling fulcrum.

As a further description of the above technical solution:

The hydraulic support pin removal device can simultaneously realize axial movement, overall vibration and partial rotation during the disassembly process of the pin shaft, which avoids the damage of the pin shaft during the disassembly process or the problem that the pin breaks and cannot be disassembled to the greatest extent.

The utility model adopts compressed air as the power source, has simple structure, convenient installation and safe operation, can significantly improve the work efficiency of pin disassembly, can improve the success rate of one disassembly, and works stably and has reliable performance, which effectively solves the problem of the existing hydraulic support pin shaft. Disassembly is difficult, and sometimes destructive disassembly is required.

Specifically reflected in:

1. Compressed air is used as the power source in the disassembly process, which is suitable for various explosion-proof environments above and below the mine, and is safe and reliable;

2. The closed frame structure is used as the connecting part, which is simple in structure, safe and reliable;

3. Through the indirect connection between the pneumatic vibrator and the pin shaft, the overall vibration is provided during the disassembly process, and the gap between the pin shaft and the shaft hole is increased, which is beneficial to the disassembly operation of the axial cylinder;

4. The ball screw is connected to the welding frame through the screw nut. During the disassembly process of the pin shaft, the cylinder is connected to the ball screw for axial movement, and at the same time, the welding frame and the pin shaft have a tendency to rotate or even rotate, which is beneficial to reduce The friction between the pin shaft and the shaft hole makes the pin shaft pull out smoothly;

5. A semi-cylindrical sleeve is installed at the end of the axial cylinder, and the other end of the sleeve leans against the surface of the hydraulic support during operation to provide an axial pulling fulcrum, avoiding the trouble of setting a fixing device outside to provide a pulling fulcrum;

6. The hydraulic support pin removal device can realize axial movement, overall vibration and partial rotation during the disassembly process of the pin shaft, which avoids the damage of the pin shaft during the disassembly process or the problem that the pin breaks and cannot be disassembled to the greatest extent.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model;

Fig. 2 is a top view structure sectional view of the utility model;

Fig. 3 is a schematic diagram of the front view of the utility model.

detailed description

Referring to Fig. 1 , a hydraulic support pin removal device provided by the utility model adopts compressed air as a power source, and includes an axial cylinder 3, a pneumatic vibrator 8, a welding frame 7, and a ball screw 5, and adopts a semi-cylindrical The sleeve 1 acts as an axial pulling fulcrum, and can realize axial movement, overall vibration and partial rotation at the same time during the disassembly process of the pin shaft. The pneumatic vibrator 8 is installed on the welding frame 7, the welding frame 7 is welded with the stepped pin 9, the stepped pin 9 is installed at the end of the pin shaft 10, the ball screw 5 is connected with the welding frame 7 through the screw nut 6, During the disassembly process of the pin shaft 10, the axial cylinder 3 provides the axial pulling force and at the same time plays the role of automatically rotating the pin shaft 10. The semi-cylindrical sleeve 1 is fixed to the outer wall of the axial cylinder 3 by the set screw 2, and the other One end leans against the surface of the hydraulic support 11 during operation to provide an axial pulling fulcrum.

The specific operation steps are as follows:

1. First install the semi-cylindrical sleeve 1 to the end of the axial cylinder 3 through the set screw 2;

2. Install the pneumatic vibrator 8 into the welding frame 7;

3. Install the ball screw 5, connect the welding frame 7, and connect the axial cylinder 3 and the ball screw 5 through the fixed pin 4;

4. Install the stepped pin 9 into the threaded hole at the end of the pin shaft 10;

5; Put the other end of the semi-cylindrical sleeve 1 of the installed overall device against the hydraulic support 11;

6. Weld the ladder pin 9 and the welding frame 7;

7. Open the valve of the air compressor, start the pneumatic vibrator 8, connect the air inlet of the axial cylinder 3 to make the piston of the axial cylinder 3 shrink, pull the ball screw 5 axially, and the device starts to disassemble the pin shaft 10.

The overall use of compressed air as the power source has a simple structure, convenient installation, and safe operation. It can significantly improve the efficiency of pin disassembly and reduce the probability of failure. It works stably and has reliable performance. It can effectively avoid destructive disassembly and solve the problem of current hydraulic support pins. Difficulty dismantling and other problems.

The above descriptions are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present utility model all belong to the protection scope of the present utility model. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims (4)

1. a hydraulic support detaching device for pin shaft, including axial cylinder, pneumatic vibrator, weld holder, and ball-screw, adopt semi-cylindrical sleeve as axially pulling fulcrum, dismounting hinge pin process can realize moving axially simultaneously, body vibration and partial rotational, described pneumatic vibrator is arranged on weld holder, weld holder welds with ladder pin, ladder pin is arranged on end part of pin shaft, described ball-screw is connected with weld holder by feed screw nut, dismounting hinge pin process is provided the effect simultaneously working as automatic rotating pin of axial tension by axial cylinder, described sleeve is fixed by holding screw and axial cylinder outer wall, the other end leans against hydraulic support surface when operation, there is provided and axially pull fulcrum.

2. hydraulic support detaching device for pin shaft according to claim 1, it is characterised in that: described axial cylinder and vibrator are to compress air as power source, and cylinder is connected with bearing pin by ball-screw and weld holder, it is achieved moving axially of bearing pin.

3. hydraulic support detaching device for pin shaft according to claim 1, it is characterised in that: described weld holder is the frame structure of Guan Bi, is fitted with pneumatic vibrator, and weld holder one end is welded on ladder pin, and the other end connects axial cylinder by ball-screw.

4. hydraulic support detaching device for pin shaft according to claim 1, it is characterised in that: semi-cylindrical sleeve is installed in described axial cylinder end, and the sleeve other end leans against hydraulic support surface when operation, it is provided that axially pull fulcrum.