Auxiliary overhauling tool for hollow transmission shaft of rock drill

Abstract

The invention provides a rock drill hollow transmission shaft auxiliary overhauling tool which is used for disassembling a rock drill hollow transmission shaft, a protruding key is arranged on the inner circumferential face of the rock drill hollow transmission shaft, and the rock drill hollow transmission shaft auxiliary overhauling tool 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, 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 method in the prior art, the hollow transmission shaft of the rock drill is evenly stressed, damage of the operating force to a bearing and other parts can be avoided, and the device can be repeatedly used and is larger in application range.

Description

Technical Field

[0001] The invention belongs to the technical field of maintenance tools, in particular to an auxiliary maintenance tool for a hollow transmission shaft of a rock drill. Background Art

[0002] A rock drill is a mechanical device for drilling holes in rocks. When the rock drill is in operation, its transmission shaft is subjected to a huge load, causing serious wear of the transmission shaft of the rock drill. When the rock drill is overhauled, the transmission shaft of the rock drill needs to be replaced. The rock drill has a huge outer size. In order to reduce the load on the transmission shaft of the rock drill, corresponding blind holes or through holes are often provided in the transmission shaft of the rock drill. In the prior art, when disassembling the transmission shaft of the rock drill, one end of a steel hammer rod is generally used to align the transmission shaft of the rock drill, and then a hammer is used to strike the other end of the hammer rod, so that the transmission shaft of the rock drill slides out of the inner ring of the bearing. However, due to the uneven striking force applied to the hammer rod by the operator, the hammer rod is subjected to an eccentric load, and other components such as the bearing are easily damaged during the disassembly process.

[0003] In the prior art, the patent document with the authorization announcement number "CN103419170B" discloses a blind hole fixture shaft auxiliary inspection tool and disassembly method for the hollow transmission shaft of a rock drill, wherein the blind hole fixture shaft is designed as a hollow shaft, and the inner hole of the blind hole fixture shaft at one end away from the blind hole is designed with a thread, and the rock drill hollow transmission shaft auxiliary inspection tool comprises a lead screw and a sleeve assembly for positioning the lead screw, and the sleeve assembly is sleeved on the exposed end of the hollow shaft, and the lead screw is passed through the sleeve assembly, and the end of the lead screw is rotated, and the thread of the lead screw and the hollow shaft are matched to remove the hollow shaft from the blind hole. By adopting this patented technical solution, the blind hole fixture shaft stuck in the welded deformed fixture can be removed from it, reducing the difficulty of disassembling the slow hollow fixture shaft, however, this technical solution is not suitable for disassembling the transmission shaft of the rock drill, which is not easy to be welded with other disassembly tools, and will also affect the reuse of the disassembly tools. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an auxiliary maintenance tool for a hollow transmission shaft of a rock drill.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention provides an auxiliary maintenance tool for a hollow transmission shaft of a rock drill. The auxiliary maintenance tool for a hollow transmission shaft of a rock drill is used for disassembling the hollow transmission shaft of the rock drill. A convex key is arranged on the inner circumferential surface of the hollow transmission shaft of the rock drill. The auxiliary maintenance tool for the hollow transmission shaft of the rock drill comprises a positioning sleeve, a transition sleeve, a support rod, a guide rod and a hammer handle. The surface of the positioning sleeve is provided with convex teeth. One end of the support rod is screwed to the positioning sleeve, 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, the other end of the guide rod is fixedly connected to a first bearing platform, and the guide rod also passes through the hammer handle.

[0007] The guide rod is also threadedly connected to the second support platform, and the hammer handle is arranged between the first support platform and the second support platform.

[0008] The first support platform or the second support platform is in the shape of a sphere as a whole.

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

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

[0011] The hammer handle and the hammer head are integrally manufactured and formed.

[0012] The hammer head is in a cylindrical shape as a whole.

[0013] The support rod is also threadedly connected with the second locking sleeve, and the second locking sleeve is tightly connected with the positioning sleeve.

[0014] The rock drill hollow transmission shaft auxiliary maintenance tool also includes a flat washer and an elastic washer, and the flat washer and the elastic washer are both clamped between the second locking sleeve and the positioning sleeve.

[0015] The number of the 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 effect of the present invention is that: by adopting the technical scheme of the present invention, when the convex teeth of the positioning sleeve are extended into the hollow transmission shaft of the rock drill and the convex teeth are abutted against the convex key surface of the hollow transmission shaft of the rock drill, the operator applies an operating force to the hammer handle, and the operating force causes the hammer handle to move along the axial direction of the guide rod, and generates an impact force on the first bearing platform, and the impact force is transmitted to the convex tooth surface of the positioning sleeve through the guide rod, the transition sleeve, and the support rod, so that the hollow transmission shaft of the rock drill is pulled out. When using the present invention, the direction of the operating force applied by the operator is completely different from the conventional method in the prior art, which can avoid the operating force from causing damage to other parts such as bearings. In addition, the operating force applied by the operator causes the hammer handle to move along the axial direction of the guide rod, and the impact force generated by the hammer handle on the first bearing platform is always along the axial direction of the guide rod, so that the first bearing platform is evenly stressed, and then the hollow transmission shaft of the rock drill is evenly stressed, further avoiding damage to other parts such as bearings during the disassembly process. In addition, when using the present invention, it is not necessary to weld the parts to the hollow transmission shaft of the rock drill, so that the present invention can be reused many times and has a wider range of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the present invention.

[0018] In the figure: 1-positioning sleeve, 2-transition sleeve, 3-support rod, 4-guide rod, 5-hammer handle, 6-convex teeth, 7-first support platform, 8-second support platform, 9-first locking sleeve, 10-hammer head, 11-second locking sleeve, 12-flat washer, 13-elastic washer. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0020] like Figure 1 As shown, the present invention provides an auxiliary maintenance tool for a hollow transmission shaft of a rock drill, which is used to disassemble the hollow transmission shaft of the rock drill. A convex key is provided on the inner circumference of the hollow transmission shaft of the rock drill. The auxiliary maintenance tool for the hollow transmission shaft of the rock drill comprises a positioning sleeve 1, a transition sleeve 2, a support rod 3, a guide rod 4 and a hammer handle 5. A convex tooth 6 is provided on the surface of the positioning sleeve 1. 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. The other end of the guide rod 4 is fixedly connected to the first bearing platform 7. The guide rod 4 also passes through the hammer handle 5.

[0021] By adopting the technical solution of the present invention, after the convex teeth of the positioning sleeve are extended into the hollow transmission shaft of the rock drill and the convex teeth are abutted against the convex key surface of the hollow transmission shaft of the rock drill, the operator applies an operating force to the hammer handle, and the operating force causes the hammer handle to move along the axial direction of the guide rod, generating an impact force on the first bearing platform, and the impact force is transmitted to the convex tooth surface of the positioning sleeve through the guide rod, the transition sleeve and the support rod, thereby pulling out the hollow transmission shaft of the rock drill. When using the present invention, 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 other components such as bearings caused by the 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, and the impact force generated by the hammer handle on the first bearing platform is always along the axial direction of the guide rod, so that the first bearing platform is evenly stressed, and then the hollow transmission shaft of the rock drill is evenly stressed, further avoiding damage to other components such as bearings during the disassembly process. In addition, when using the present invention, it is not necessary to weld the components to the hollow transmission shaft of the rock drill, so that the present invention can be reused many times and has a wider range of application.

[0022] Specifically, the guide rod 4 is also screwed to the second support platform 8, and the hammer handle 5 is arranged between the first support platform 7 and the second support platform 8. The first support platform 7 or the second support platform 8 is spherical in shape as a whole. 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 platform 8. Preferably, the first locking sleeve 9 can be replaced by a hexagonal nut. Thereby, the relative position between the second support platform 8 and the guide rod 4 is kept stable, and the hammer handle 5 is prevented from coming out of the guide rod 4. When the operator applies operating force to the hammer handle 5, it is avoided to cause accidental damage to other parts.

[0023] In addition, both ends of the hammer handle 5 are respectively fixedly connected to the hammer head 10. The hammer handle 5 is convenient for the operator to hold and operate, and the hammer handle 5 and the hammer head 10 are integrally manufactured. The hammer head 10 is cylindrical in shape. The support rod 3 is also screwed to the second locking sleeve 11, and the second locking sleeve 11 is tightly connected to the positioning sleeve 1. Therefore, the relative position between the positioning sleeve 1 and the support rod 3 remains stable.

[0024] In addition, the auxiliary maintenance tool for the hollow transmission shaft of the rock drill also includes a flat washer 12 and an elastic washer 13, and the flat washer 12 and the elastic washer 13 are both 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 convex teeth 6 is equal to the number of convex keys. The number of convex teeth 6 is multiple, and the multiple convex teeth 6 are arranged at equal intervals along the outer peripheral surface of the positioning sleeve 1. The number of convex keys is multiple, and the multiple convex keys are arranged at equal intervals along the inner peripheral surface of the hollow transmission shaft of the rock drill.

Claims

1. An auxiliary maintenance tool for a hollow transmission shaft of a rock drill, characterized in that: The hollow transmission shaft auxiliary maintenance tool for a rock drill is used for disassembling the hollow transmission shaft of the rock drill. A convex key is provided on the inner circumferential surface of the hollow transmission shaft of the rock drill. The hollow transmission shaft auxiliary maintenance tool for a rock drill comprises 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 a convex tooth (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 a first support platform (7), and the guide rod (4) also passes through the hammer handle (5).

2. The auxiliary maintenance tool for the hollow transmission shaft of a rock drill according to claim 1, characterized in that: The guide rod (4) is also threadedly connected to the second support platform (8), and the hammer handle (5) is arranged between the first support platform (7) and the second support platform (8).

3. The auxiliary maintenance tool for the hollow transmission shaft of a rock drill according to claim 2, characterized in that: The first support platform (7) or the second support platform (8) is in the shape of a sphere as a whole.

4. The auxiliary maintenance tool for the hollow transmission shaft of a rock drill according to claim 2, characterized in that: The guide rod (4) is also threadedly connected to the first locking sleeve (9), and the first locking sleeve (9) is tightly connected to the second support platform (8).

5. The auxiliary maintenance tool for the hollow transmission shaft of a rock drill according to claim 1, characterized in that: The two ends of the hammer handle (5) are also respectively fixedly connected to the hammer head (10).

6. The auxiliary maintenance tool for the hollow transmission shaft of a rock drill according to claim 5, characterized in that: The hammer handle (5) and the hammer head (10) are integrally manufactured and formed.

7. A rock drill hollow transmission shaft auxiliary maintenance tool as claimed in claim 5 or 6, characterized in that: The hammer head (10) is cylindrical in shape as a whole.

8. The auxiliary maintenance tool for the hollow transmission shaft of a rock drill according to claim 1, characterized in that: The support rod (3) is also threadedly connected to the second locking sleeve (11), and the second locking sleeve (11) is tightly connected to the positioning sleeve (1).

9. The auxiliary maintenance tool for the hollow transmission shaft of a rock drill according to claim 8, characterized in that: The rock drill hollow transmission shaft auxiliary maintenance tool also includes a flat washer (12) and an elastic washer (13), and the flat washer (12) and the elastic washer (13) are both clamped between the second locking sleeve (11) and the positioning sleeve (1).

10. The auxiliary maintenance tool for the hollow transmission shaft of a rock drill according to 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).

Images