Tool for rapidly taking out connecting pin shaft of coal mine heading machine

Abstract

The utility model provides a coal mine heading machine connecting pin shaft quick taking-out tool which comprises a cylindrical sleeve and further comprises a thread drawing pull rod, the two ends of the cylindrical sleeve are fixedly connected with an upper end cover and a lower end cover respectively, the lower end cover is fixedly connected with a plurality of arc-shaped connecting plates in the circumferential direction, and the arc-shaped connecting plates are fixedly connected with U-shaped clamping plates. The size of the U-shaped clamping plate is matched with the size of a groove in the connecting pin shaft to be taken out, a through hole is formed in the upper end cover, a threaded hole is formed in the lower end cover, and the threaded drawing pull rod penetrates through the through hole and is in threaded connection with the threaded hole. The tool is simple in structure and convenient to operate, the taking-out efficiency of the connecting pin shaft is greatly improved, in addition, the manufacturing cost of the tool is very low, existing materials and equipment of a mine are used for operation, and the problem that the connecting pin shaft of the heading machine is difficult to take out is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine tunneling, and particularly relates to a quick removal tool for the connecting pin shaft of a coal mine tunneling machine. Background Art

[0002] When the tunneling machine enters the well or is recovered and disassembled when the tunneling is completed, the method of manually using a sledgehammer to strike is adopted to remove the connecting pin shaft of the tunneling machine. During the striking process, the angle and direction of the equipment need to be continuously adjusted to adjust the stress angle of the pin shaft. Since it is necessary to manually adjust the stress direction of the pin shaft through a chain block, it is not easy to remove and is not safe. It is more difficult to remove the pin shaft with a long installation time or rust, especially in the case where the central nut of the pin shaft is damaged or broken. There has been a situation where a pin shaft could not be removed for several days, and finally, the pin shaft could only be removed by oxygen cutting.

[0003] Therefore, it is necessary to design a device convenient for removing the connecting pin shaft of the tunneling machine to solve the current technical problems. Summary of the Utility Model

[0004] Aiming at the deficiencies in the prior art, the utility model provides a quick removal tool for the connecting pin shaft of a coal mine tunneling machine, which solves the problems of difficult removal and low removal efficiency of the connecting pin shaft of the coal mine tunneling machine.

[0005] The technical solution of the utility model is as follows: A quick removal tool for the connecting pin shaft of a coal mine tunneling machine includes a cylindrical sleeve, and also includes a threaded pulling rod. Upper end covers and lower end covers are respectively and fixedly connected to both ends of the cylindrical sleeve. A plurality of arc-shaped connecting plates are fixedly connected to the lower end cover along the circumferential direction. A U-shaped clamping plate is fixedly connected to the arc-shaped connecting plate, and the size of the U-shaped clamping plate matches the size of the groove on the connecting pin shaft to be removed. A through hole is provided on the upper end cover, and a threaded hole is provided on the lower end cover. The threaded pulling rod passes through the through hole and is threadedly connected to the threaded hole.

[0006] Preferably, an observation window is provided on the cylindrical sleeve.

[0007] Preferably, the clamping opening of the U-shaped clamping plate is in a curved arc shape.

[0008] Preferably, the diameter of the through hole is 28 mm, the diameter of the threaded hole is 24 mm, and the diameter of the threaded pulling rod is 24 mm.

[0009] Advantages of the Utility Model

[0010] The structure of the utility model is simple and the operation is convenient, which greatly improves the removal efficiency of the connecting pin shaft. In addition, the manufacturing cost of this tool is very low, and the operation is carried out by using the existing materials and equipment in the mine, which solves the problem of difficult removal of the connecting pin shaft of the tunneling machine. Brief Description of the Drawings

[0011] Figure 1 Structural schematic diagram of the present utility model Figure 1 。

[0012] Figure 2 is Figure 1 View A-A in the middle.

[0013] Figure 3 Use state diagram of the present utility model. Specific implementation manner

[0014] To make the purpose, technical solution and beneficial effects of the present utility model clearer, the following further describes the implementation manner of the present utility model in detail with reference to the drawings.

[0015] The present utility model first uses a 6-inch steel pipe and a circular steel plate to weld and manufacture a cylindrical sleeve 1 (it is necessary to open a through hole 9 and a threaded hole 10 on the circular steel plate in advance), and uses oxygen cutting to open an observation window 11 on the cylindrical sleeve 1, and fixes and welds the U-shaped clamping plate 6 to the cylindrical sleeve 1 through three arc-shaped connecting plates 5. One end of a threaded steel bar with a diameter of 24 mm is turned into a thread on a lathe. In this way, the tooling of the present utility model can be made using the existing materials in the mine, which can not only make use of waste but also greatly reduce the production and operation costs.

[0016] The present utility model provides a quick removal tooling for the connecting pin of a coal mine roadheader, including a cylindrical sleeve 1 and a threaded pulling rod 2. An observation window 11 is provided on the cylindrical sleeve 1, which is convenient for observing the use situation of the threaded pulling rod 2 during operation. Upper end covers 3 and lower end covers 4 are respectively fixedly connected to both ends of the cylindrical sleeve 1. A plurality of arc-shaped connecting plates 5 are fixedly connected to the lower end cover 4 along the circumferential direction. A U-shaped clamping plate 6 is fixedly connected to the arc-shaped connecting plate 5, and the size of the U-shaped clamping plate 6 matches the size of the groove 8 on the connecting pin 7 to be removed. The clamping opening of the U-shaped clamping plate 6 is in a curved arc shape, which is convenient for the U-shaped clamping plate 6 to be buckled on the groove 8 of the connecting pin 7. A through hole 9 is provided on the upper end cover 3, and a threaded hole 10 is provided on the lower end cover 4. The threaded pulling rod 2 passes through the through hole 9 and is threadedly connected to the threaded hole 10. The diameter of the through hole 9 is 28 mm, which is convenient for the threaded pulling rod 2 to pass through smoothly. The diameter of the threaded hole 10 is 24 mm, and the diameter of the threaded pulling rod 2 is 24 mm.

[0017] In use, the U-shaped clamping plate 6 is buckled on the groove 8 of the connecting pin shaft 7, then the threaded pulling rod 2 is passed through the through hole 9 and screwed into the threaded hole 10, and the other end of the threaded pulling rod 2 is sleeved into the anchor cable tensioning machine 12. The anchor cable tensioning machine 12 is started, and the connecting pin shaft 7 of the roadheader is pulled out by using the tension of the anchor cable tensioning machine 12. With the tooling of the utility model, the connecting pin shaft 7 can be taken out quickly and efficiently. The number of pin shafts that could be taken out by 3 - 4 people in one original team was only 1 - 2, but it has been improved to 16 pin shafts that can be easily taken out by 2 people in one team, and the efficiency has increased by nearly 20 times, which has been well verified in practice.

[0018] The above is the preferred embodiment of the utility model. Those skilled in the art should understand that the embodiments of the utility model are not limited by the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the utility model shall be equivalent replacement methods and are all included in the protection scope of the utility model.

Claims

1. A quick extraction tooling for the connecting pin shaft of a coal mine roadheader, including a cylindrical sleeve, characterized in that: It further includes a threaded pulling rod. Upper and lower end covers are respectively fixedly connected to both ends of the cylindrical sleeve. A plurality of arc-shaped connecting plates are fixedly connected circumferentially on the lower end cover. A U-shaped clamping plate is fixedly connected to the arc-shaped connecting plate, and the size of the U-shaped clamping plate matches the size of the groove on the connecting pin to be removed. A through hole is provided on the upper end cover, and a threaded hole is provided on the lower end cover. The threaded pulling rod passes through the through hole and is threadedly connected to the threaded hole.

2. The quick removal tooling for the connecting pin shaft of a coal mine roadheader according to claim 1, characterized in that: An observation window is provided on the cylindrical sleeve.

3. A quick removal tool for the connecting pin shaft of a coal mine roadheader according to claim 1, characterized in that: The clamping opening of the U-shaped clamping plate is in a curved arc shape.

4. A quick removal tooling for the connecting pin shaft of a coal mine roadheader according to claim 1, characterized in that: The diameter of the through hole is 28 mm, the diameter of the threaded hole is 24 mm, and the diameter of the threaded pulling rod is 24 mm.

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