Auxiliary disassembling tool for disassembling pin shaft in hydraulic support

Abstract

An auxiliary disassembling tool for disassembling a pin shaft in a hydraulic support comprises a coupling head, a vibration head and an eccentric part. One end of the coupling head is connected with an eccentric part for providing radial vibration with corresponding resonant frequency, the other end of the coupling head is provided with a mounting groove, and a bearing is mounted in the mounting groove; the vibration head comprises a rotating disc section and a bolt cylindrical section which are fixedly connected, one end of the rotating disc section is clamped in the bearing, and the bolt cylindrical section is used for being inserted into a pin hole of the pin. The pin shaft can be detached conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hydraulic support dismounting technical equipment field, and specifically relates to a kind of auxiliary dismounting tool for dismounting pin shaft in hydraulic support. BACKGROUND

[0002] In the assembly of existing hydraulic support, the front connecting rod and the base, the front connecting rod and the shield beam, the rear connecting rod and the base, and the rear connecting rod and the shield beam are all connected and fixed by pin shafts. Since the working environment of the hydraulic support is often accompanied by coal dust or dust, the hydraulic support will rust after long time working in this environment, especially the pin shaft and pin hole at the connection of the hydraulic support may be rusted, so it is difficult for personnel to rotate the pin shaft using a pin extractor, and it is time-consuming and laborious to dismount the pin shaft. SUMMARY

[0003] The utility model aims at providing a kind of auxiliary dismounting tool for dismounting pin shaft in hydraulic support, which is convenient for dismounting pin shaft.

[0004] To solve the above technical problems, the utility model adopts the specific scheme of a kind of auxiliary dismounting tool for dismounting pin shaft in hydraulic support, including coupling head, vibration head and eccentric part;One end of coupling head is connected with eccentric part for providing corresponding resonance frequency radial vibration, the other end of coupling head is provided with mounting groove, bearing is installed in mounting groove;Vibration head includes fixedly connected rotating disc section and plug-in cylindrical section, one end of rotating disc section is clamped in bearing, plug-in cylindrical section is used to be inserted into the pin hole of pin.

[0005] As another optimization scheme of the above-mentioned auxiliary dismounting tool for dismounting pin shaft in hydraulic support, a square hole is provided through the axis in the vibration head, and the square hole is used for the pin extractor to pass in to pull out the broken vibration head from the pin hole.

[0006] As another optimization scheme of the above-mentioned auxiliary dismounting tool for dismounting pin shaft in hydraulic support, one end of the coupling head where the bearing is installed is a large end, one end of the coupling head connected with the eccentric part is a rectangular connection small end, and two installation steps with increasing diameters are coaxially arranged between the rectangular connection small end and the large end.

[0007] As another optimization scheme of the above-mentioned auxiliary dismounting tool for dismounting pin shaft in hydraulic support, the eccentric part includes an eccentric wheel and a connecting shaft, the connecting shaft is fixed to the center of one side surface of the eccentric wheel, and an eccentric rectangular groove for mounting and cooperating with the rectangular connection small end of the coupling head is eccentrically provided on the other side surface of the eccentric wheel;The end of the connecting shaft away from the eccentric wheel is connected with a driving motor for driving the rotation thereof.

[0008] As another optimization scheme of the above-mentioned auxiliary dismounting tool for dismounting pin shaft in hydraulic support, the diameter of the rotating disc section is greater than the diameter of the plug-in cylindrical section.

[0009] As another optimization scheme of the auxiliary dismounting tool for dismounting the pin shaft in the hydraulic support, a blocking disc is arranged between the rotating disc segment and the pin cylinder segment on the vibration head, and the diameter of the blocking disc is greater than the diameter of the rotating disc segment.

[0010] As another optimization scheme of the auxiliary dismounting tool for dismounting the pin shaft in the hydraulic support, the blocking disc is connected with the pin cylinder segment through a circular truncated cone, and the generatrix of the circular truncated cone is an arc line with an arc opening distributed outward.

[0011] As another optimization scheme of the auxiliary dismounting tool for dismounting the pin shaft in the hydraulic support, the vibration frequency generated by the eccentric member driving the vibration head is greater than 60 Hz.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The pin cylinder segment at the right end of the vibration head can be inserted into the pin hole of the pin, the rotating disc segment at the left end of the vibration head is clamped in the bearing in the coupling head, the vibration head is connected with the eccentric member through the coupling head, the eccentric member can drive the coupling head to rotate and simultaneously give the pin the same frequency radial vibration through the vibration head, the rusted and difficult-to-rotate pin will be loosened under the continuous radial vibration, and the pin can be pulled out and dismounted through the pin puller subsequently. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model;

[0015] Figure 2 It is a structural schematic view of the coupling head of the utility model;

[0016] Figure 3 It is a structural schematic view of the vibration head of the utility model;

[0017] Figure 4 It is a structural schematic view of the eccentric member of the utility model.

[0018] Reference signs: 1, coupling head, 101, rectangular connecting small end, 102, mounting step, 103, large end, 104, mounting groove, 2, vibration head, 201, rotating disc segment, 202, pin cylinder segment, 203, square hole, 204, blocking disc, 3, pin, 301, pin hole, 4, bearing, 5, eccentric member, 501, connecting shaft, 502, eccentric wheel, 503, eccentric rectangular groove. DETAILED DESCRIPTION

[0019] The technical solution of this utility model will be further described in detail below with reference to specific embodiments. Parts of this utility model that are not described in detail in the following embodiments, such as the model and specifications of the drive motor, the vibration of the eccentric part at a certain frequency, etc., should be known or should be known by those skilled in the art.

[0020] An auxiliary disassembly tooling for removing the pin in a hydraulic support, such as Figures 1-4 As shown, the device includes a connector 1, a vibrating head 2, and an eccentric component 5. The vibrating head 2 is connected to the eccentric component 5 via the connector 1. The vibrating head 2 is used to insert into the pin hole 301 of the pin 3. The vibrating head 2 includes a rotating disc section 201 at the left end for connecting to the connector 1 and a pin cylindrical section 202 at the right end for inserting into the pin hole 301. The diameter of the rotating disc section 201 is larger than the diameter of the pin cylindrical section 202, and the rotating disc section 201 and the pin cylindrical section 202 are fixedly connected.

[0021] The large end 103 of the connector 1 is rotatably connected to the rotating disc section 201 of the vibrating head 2, and the small end 101 of the connector 1 is a rectangle connected to the eccentric part 5. The large end 103 is truncated cone in shape. A mounting groove 104 is provided in the middle of the side of the large end 103 of the connector 1 facing the vibrating head 2. A bearing 4 is fixedly installed in the mounting groove 104, and the rotating disc section 201 of the vibrating head 2 is interference-fitted into the bearing 4.

[0022] The rotating disc segment 201 and the pin cylindrical segment 202 are connected by a blocking disc 204. The diameter of the blocking disc 204 is larger than the diameter of the rotating disc segment 201, but smaller than the diameter of the bearing 4. The blocking disc 204 prevents the rotating disc segment 201 from being excessively inserted into the bearing 4. A frustum is provided between the pin cylindrical segment 202 and the blocking disc 204 to allow direct contact between the blocking disc 204 and the pin 3. The generatrix of the frustum is an arc with the opening facing outwards.

[0023] The eccentric component 5 is used to provide radial vibration at the corresponding resonant frequency. The eccentric component 5 includes an eccentric wheel 502 and a connecting shaft 501. The left end of the connecting shaft 501 is connected to a drive motor for driving its rotation. The right end of the connecting shaft 501 is fixed at the center of the left side of the eccentric wheel 502. An eccentric rectangular groove 503 is eccentrically opened on the right side of the eccentric wheel 502. The eccentric rectangular groove 503 is used for the rectangular connecting small end 101 of the connector 1 to be fitted.

[0024] In use, the driving motor is started, the connecting shaft 501 can drive the eccentric wheel 502 to rotate and generate a vibration frequency greater than 60 Hz, the rotating eccentric wheel 502 can drive the coupling head 1 to rotate eccentrically and generate radial vibration, the radial vibration of the coupling head 1 can transmit the vibration to the vibration head 2 connected thereto, and the radial vibration of the vibration head 2 can transmit the vibration to the pin 3, so as to loosen the rusted pin 3, and the subsequent personnel can pull out the pin 3 by using the pin puller with less labor.

[0025] Further, the rectangular connecting small end 101 and the large end 103 are coaxially provided with two installation steps 102, the shapes of the two installation steps 102 are consistent with the shape of the large end 103 of the coupling head 1, and the diameters of the two installation steps 102 increase from the rectangular connecting small end 101 to the large end 103. The installation step 102 close to the rectangular connecting small end 101 can control the depth of the rectangular connecting small end 101 inserted into the eccentric part 5, and the installation step 102 close to the large end 103 can reduce stress concentration.

[0026] Further, a square hole 203 is provided through the vibration head 2 along the axis, and the square hole 203 is used for the pin pulling tool to pull out the broken vibration head 2 from the pin hole 301.

[0027] Further, the installation groove 104 in the large end 103 of the coupling head 1 is divided into two parts, one part is a large groove capable of fixing the bearing 4, and the other part is a small groove at the bottom of the installation groove 104, the diameter of the small groove is smaller than that of the large groove, and the small groove can avoid the situation that the end of the rotating disc segment 201 of the vibration head 2 inserted into the bearing 4 contacts the groove bottom of the installation groove 104.

Claims

1. A hydraulic support in the middle of the disassembly pin shaft with the auxiliary disassembly tool, characterized in that: The utility model relates to a vibration head, which comprises a coupling head (1), a vibration head (2) and an eccentric part (5), wherein one end of the coupling head (1) is connected with the eccentric part (5) for providing radial vibration at a corresponding resonance frequency, the other end of the coupling head (1) is provided with a mounting groove (104), and a bearing (4) is mounted in the mounting groove (104); the vibration head (2) comprises a rotating disc segment (201) and a plug-in cylindrical segment (202) which are fixedly connected, one end of the rotating disc segment (201) is clamped in the bearing (4), and the plug-in cylindrical segment (202) is used for being inserted into a pin hole (301) of a pin (3).

2. The auxiliary dismounting tool for dismounting the pin shaft in the hydraulic support according to claim 1, characterized in that: A square hole (203) is formed through the vibration head (2) along the axis thereof, and the square hole (203) is used for passing through a pin pulling tool to pull out the broken vibration head (2) from the pin hole (301).

3. The auxiliary dismounting tool for dismounting the pin shaft in the hydraulic support according to claim 1, characterized in that: One end of the coupling head (1) provided with the bearing (4) is a large end (103), one end of the coupling head (1) connected with the eccentric part (5) is a rectangular connecting small end (101), and two mounting steps (102) with gradually increasing diameters are coaxially arranged between the rectangular connecting small end (101) and the large end (103).

4. The auxiliary dismounting tool for dismounting the pin shaft in the hydraulic support according to claim 3, characterized in that: The eccentric part (5) comprises an eccentric wheel (502) and a connecting shaft (501), the connecting shaft (501) is fixed to the center of one side surface of the eccentric wheel (502), an eccentric rectangular groove (503) for mounting and cooperating with the rectangular connecting small end (101) of the coupling head (1) is eccentrically formed on the other side surface of the eccentric wheel (502), and one end of the connecting shaft (501) away from the eccentric wheel (502) is connected with a driving motor for driving the rotation thereof.

5. The auxiliary dismounting tool for dismounting the pin shaft in the hydraulic support according to claim 1, characterized in that: The diameter of the rotating disc segment (201) is greater than the diameter of the plug-in cylindrical segment (202).

6. The auxiliary dismounting tool for dismounting the pin shaft in the hydraulic support according to claim 5, characterized in that: A blocking disc (204) is arranged between the rotating disc segment (201) and the plug-in cylindrical segment (202) on the vibration head (2), and the diameter of the blocking disc (204) is greater than the diameter of the rotating disc segment (201).

7. The auxiliary dismounting tool for dismounting the pin shaft in the hydraulic support according to claim 6, characterized in that: The blocking disc (204) and the plug-in cylindrical segment (202) are connected through a circular truncated cone, and the generatrix of the circular truncated cone is an arc line with an arc opening distributed outward.

8. The auxiliary dismounting tool for dismounting the pin shaft in the hydraulic support according to claim 1, characterized in that: The vibration frequency generated by the eccentric part (5) driving the vibration head (2) is greater than 60 Hz.

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