Dismounting device

Abstract

The utility model provides a dismounting device which is used for dismounting a hollow transmission shaft of a rock drill, a convex key is arranged on the inner circumferential surface of the hollow transmission shaft of the rock drill, the dismounting device comprises a positioning sleeve, a transition sleeve, a supporting rod, a guide rod and a hammer handle, convex teeth are arranged on the surface of the positioning sleeve, one end of the supporting rod is in threaded connection with the positioning sleeve, and the other end of the supporting rod is in threaded connection with the transition sleeve. The other end of the supporting rod is in threaded connection with one end of the transition sleeve, the other end of the transition sleeve is in threaded connection with one end of the guide rod, the other end of the guide rod is fixedly connected with the first bearing platform, and the guide rod further penetrates through the hammer handle. By the adoption of the technical scheme, when the device is used, the direction of operating force applied by an operator is completely different from that of a conventional technique in the prior art, the hollow transmission shaft of the rock drill is evenly stressed, damage to a bearing and other parts caused by the operating force can be avoided, and the device can be repeatedly used for multiple times and is convenient to use. And the application range is wider.

Description

Technical Field

[0001] This utility model belongs to the field of maintenance tool technology, and in particular to a disassembly device. Background Technology

[0002] A rock drill is a mechanical device used for drilling into rocks. During operation, the drive bearing of a rock drill is subjected to a huge load, causing severe wear on the drive shaft. When repairing a rock drill, the drive shaft needs to be replaced. Rock drills are large in size, and to reduce the load on the drive shaft, blind holes or through holes are often provided inside the drive shaft. In the current technology, when disassembling the drive shaft of a rock drill, one end of a steel hammer rod is generally aligned with the drive shaft, and then the other end of the hammer rod is struck with a hammer to make the drive shaft slide out of the inner ring of the bearing. However, because the striking force applied by the operator to the hammer rod is uneven, the hammer rod bears an eccentric load, which can easily damage the bearing and other components during disassembly.

[0003] In the existing technology, patent document with authorization announcement number "CN103419170B" discloses a disassembly device and method for a blind hole tooling shaft. The blind hole tooling shaft is designed as a hollow shaft, and the inner hole at the end of the blind hole away from the blind hole is threaded. The disassembly device includes a lead screw and a sleeve assembly for positioning the lead screw. The sleeve assembly is fitted onto the exposed end of the hollow shaft. By passing the lead screw through the sleeve assembly and rotating the end of the lead screw, the hollow shaft is disassembled from the blind hole by utilizing the thread engagement between the lead screw and the hollow shaft. Using this patented technical solution, it is possible to remove the blind hole tooling shaft stuck in the welded and deformed tooling, reducing the difficulty of disassembling the blind hole tooling shaft. However, this technical solution is not suitable for disassembling the drive shaft of a rock drill, as the drive shaft of a rock drill is not easy to weld together with other disassembly tools, and it also affects the reuse of disassembly tools. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a disassembly device.

[0005] This utility model is achieved through the following technical solution.

[0006] This utility model provides a disassembly device for disassembling a hollow drive shaft of a rock drill. The hollow drive shaft of the rock drill has a protruding key on its inner circumferential surface. The disassembly device includes a positioning sleeve, a transition sleeve, a support rod, a guide rod, and a hammer handle. The surface of the positioning sleeve has protruding teeth. One end of the support rod is screwed to the positioning sleeve, and the other end of the support rod is screwed to one end of the transition sleeve. The other end of the transition sleeve is screwed to one end of the guide rod, and the other end of the guide rod is fixedly connected to a first support platform. The guide rod also passes through the hammer handle.

[0007] The guide rod is also screwed to the second support, and the hammer handle is disposed between the first support and the second support.

[0008] The first or second foundation is spherical in shape.

[0009] The guide rod is also screwed to the first locking sleeve, and the first locking sleeve is tightly connected to the second support.

[0010] The two ends of the hammer handle are also fixedly connected to the hammer head.

[0011] The hammer handle and hammer head are manufactured as a single piece.

[0012] The hammerhead is cylindrical in shape.

[0013] The support rod is also screwed to the second locking sleeve, and the second locking sleeve is tightened together with the positioning sleeve.

[0014] The disassembly device also includes a flat washer and an elastic washer, both of which are sandwiched between the second locking sleeve and the positioning sleeve.

[0015] The number of protruding teeth is multiple, and the multiple protruding teeth are arranged at equal intervals along the outer peripheral surface of the positioning sleeve.

[0016] The beneficial effects of this utility model are as follows: Using the technical solution of this utility model, when the protruding teeth of the positioning sleeve are inserted into the hollow drive shaft of the rock drill and abut against the key surface of the hollow drive shaft, the operator applies an operating force to the hammer handle. This operating force causes the hammer handle to move axially along the guide rod, generating an impact force on the first bearing platform. This impact force is transmitted through the guide rod, transition sleeve, and support rod to the protruding tooth surface of the positioning sleeve, thereby pulling out the hollow drive shaft of the rock drill. When using this utility model, the direction of the operating force applied by the operator is different from that of the conventional hand in the prior art. The method is completely different, which can avoid damage to bearings and other components caused by operating force. In addition, the operating force applied by the operator causes the hammer handle to move along the axial direction of the guide rod. The impact force of the hammer handle on the first bearing is always along the axial direction of the guide rod, so that the first bearing is subjected to uniform force, and in turn, the hollow drive shaft of the rock drill is subjected to uniform force. This further avoids damage to bearings and other components during disassembly. In addition, this utility model does not require welding the components to the hollow drive shaft of the rock drill, so that this utility model can be reused many times and has a wider range of applications. Attached Figure Description

[0017] Figure 1 This is the front view of this utility model.

[0018] In the diagram: 1-positioning sleeve, 2-transition sleeve, 3-support rod, 4-guide rod, 5-hammer handle, 6-protruding tooth, 7-first bearing platform, 8-second bearing platform, 9-first locking sleeve, 10-hammer head, 11-second locking sleeve, 12-flat washer, 13-elastic washer. Detailed Implementation

[0019] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0020] like Figure 1 As shown, this utility model provides a disassembly device for disassembling a hollow drive shaft of a rock drill. The hollow drive shaft of the rock drill has a protruding key on its inner circumferential surface. The disassembly device includes a positioning sleeve 1, a transition sleeve 2, a support rod 3, a guide rod 4, and a hammer handle 5. The surface of the positioning sleeve 1 is provided with protruding teeth 6. One end of the support rod 3 is screwed to the positioning sleeve 1, and the other end of the support rod 3 is screwed to one end of the transition sleeve 2. The other end of the transition sleeve 2 is screwed to one end of the guide rod 4, and the other end of the guide rod 4 is fixedly connected to the first support 7. The guide rod 4 also passes through the hammer handle 5.

[0021] By employing the technical solution of this utility model, when the protruding teeth of the positioning sleeve are inserted into the hollow drive shaft of the rock drill and abut against the key surface of the hollow drive shaft, the operator applies an operating force to the hammer handle. This operating force causes the hammer handle to move axially along the guide rod, generating an impact force on the first bearing. This impact force is transmitted through the guide rod, transition sleeve, and support rod to the protruding tooth surface of the positioning sleeve, thereby pulling out the hollow drive shaft of the rock drill. When using this utility model, the direction of the operating force applied by the operator is completely different from the conventional method in the prior art, which can avoid damage to bearings and other components caused by the operating force. In addition, the operating force applied by the operator causes the hammer handle to move axially along the guide rod, and the impact force generated by the hammer handle on the first bearing is always along the axial direction of the guide rod, so that the first bearing is subjected to uniform force, and consequently the hollow drive shaft of the rock drill is subjected to uniform force, further avoiding damage to bearings and other components during disassembly. Furthermore, this utility model does not require welding the components to the hollow drive shaft of the rock drill, allowing it to be reused multiple times and having a wider range of applications.

[0022] Specifically, the guide rod 4 is also screwed to the second base 8, and the hammer handle 5 is positioned between the first base 7 and the second base 8. The first base 7 or the second base 8 is generally spherical. The guide rod 4 is also screwed to the first locking sleeve 9, which is tightly fastened to the second base 8. Preferably, the first locking sleeve 9 can be replaced with a hexagonal nut. This ensures a stable relative position between the second base 8 and the guide rod 4, preventing the hammer handle 5 from detaching from the guide rod 4 and avoiding accidental damage to other components when the operator applies force to the hammer handle 5.

[0023] In addition, both ends of the hammer handle 5 are fixedly connected to the hammer head 10. This makes the hammer handle 5 easy for the operator to hold and operate. The hammer handle 5 and the hammer head 10 are manufactured as a single piece. The hammer head 10 is cylindrical in shape. The support rod 3 is also screwed to the second locking sleeve 11, which is tightened together with the positioning sleeve 1. This ensures that the relative position between the positioning sleeve 1 and the support rod 3 remains stable.

[0024] In addition, the disassembly device includes a flat washer 12 and an elastic washer 13, both of which are clamped between the second locking sleeve 11 and the positioning sleeve 1. Preferably, the second locking sleeve 11 can be replaced by a hexagonal nut. The number of protruding teeth 6 is equal to the number of protruding keys. There are multiple protruding teeth 6, which are arranged at equal intervals along the outer circumferential surface of the positioning sleeve 1. There are multiple protruding keys, which are arranged at equal intervals along the inner circumferential surface of the hollow drive shaft of the rock drill.

Claims

1. A disassembly device, characterized in that: The disassembly device is used to disassemble the hollow drive shaft of the rock drill. The hollow drive shaft of the rock drill has a protruding key on its inner circumferential surface. The disassembly device includes a positioning sleeve (1), a transition sleeve (2), a support rod (3), a guide rod (4), and a hammer handle (5). The surface of the positioning sleeve (1) is provided with protruding teeth (6). One end of the support rod (3) is screwed to the positioning sleeve (1). The other end of the support rod (3) is screwed to one end of the transition sleeve (2). The other end of the transition sleeve (2) is screwed to one end of the guide rod (4). The other end of the guide rod (4) is fixedly connected to the first support (7). The guide rod (4) also passes through the hammer handle (5).

2. The disassembly device as described in claim 1, characterized in that: The guide rod (4) is also screwed to the second base (8), and the hammer handle (5) is disposed between the first base (7) and the second base (8).

3. The disassembly device as described in claim 2, characterized in that: The first foundation (7) or the second foundation (8) is spherical in shape.

4. The disassembly device as described in claim 2, characterized in that: The guide rod (4) is also screwed to the first locking sleeve (9), and the first locking sleeve (9) is tightly connected to the second support (8).

5. The disassembly device as described in claim 1, characterized in that: The two ends of the hammer handle (5) are also fixedly connected to the hammer head (10).

6. The disassembly device as described in claim 5, characterized in that: The hammer handle (5) and the hammer head (10) are manufactured as a single piece.

7. A disassembly device as described in claim 5 or 6, characterized in that: The hammerhead (10) is cylindrical in shape.

8. The disassembly device as described in claim 1, characterized in that: The support rod (3) is also screwed to the second locking sleeve (11), and the second locking sleeve (11) is tightened together with the positioning sleeve (1).

9. A disassembly device as described in claim 8, characterized in that: The disassembly device also includes a flat washer (12) and an elastic washer (13), both of which are sandwiched between the second locking sleeve (11) and the positioning sleeve (1).

10. The disassembly device as described in claim 1, characterized in that: The number of the protruding teeth (6) is multiple, and the multiple protruding teeth (6) are arranged at equal intervals along the outer peripheral surface of the positioning sleeve (1).

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