Special tool for disassembling large coupling

Abstract

The utility model discloses a special tool for disassembling a large coupling, which comprises a rack, a plurality of notches are arranged on both sides of the rack, adjusting screw rods are inserted in the notches in a sliding manner, a hydraulic cylinder is arranged in the center of the interior of the rack, one end of each adjusting screw rod is sleeved with a positioning nut in a threaded manner, and the other end of each adjusting screw rod is sleeved with a positioning nut. The outer portions of the lead screws are sleeved with locking nuts making contact with the rack in a threaded mode, extension sleeves connected to the outer portions of the lead screws in a sleeving mode are fixedly arranged on the outer walls of one sides of the locking nuts, and a width adjusting assembly is arranged on the outer wall of one side of the rack and located on the symmetrical center line of the two lead screws. The adjusting lead screw is adopted, connection between the device and the coupler is achieved, a bearing in the coupler is rapidly disassembled through large jacking force of the hydraulic cylinder, and the device has the advantages of being large in bearing capacity, high in disassembling speed, simple in structure, convenient to manufacture and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of coupling disassembly, in particular to a special tool for disassembling a large coupling. Background Art

[0002] We have conducted in-depth discussions and research on the disassembly of large couplings for large units such as gasification coal mills. Originally, when the bearings of these large couplings were damaged, they needed to be disassembled using a 50T screw jack, but due to the difficulty in disassembly, most of them had to be entrusted to professional manufacturers for disassembly and assembly. This not only increased the company's operating costs, but also took a long time, affecting the normal operation of the equipment.

[0003] The original coupling removal tools (pullers) used by the project department and workshop were small in size and could not meet the needs of rapid removal of large couplings. During the removal process, these small tools often could not provide enough force, resulting in low removal efficiency and easy damage to key components such as couplings and large shafts. Therefore, it is urgent to design a special tool for removing large couplings to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a special tool for disassembling a large coupling to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A special tool for disassembling a large coupling comprises a frame, a plurality of notches are provided on both sides of the frame, and adjusting screw rods are slidably inserted inside the notches, a hydraulic cylinder is provided at the inner center of the frame, a positioning nut is threadedly sleeved on one end of the adjusting screw rod, a locking nut in contact with the frame is threadedly sleeved on the outer surface of the adjusting screw rod, and an extension sleeve sleeved on the outside of the screw rod is fixedly provided on the outer wall of one side of the locking nut, a width adjustment component is provided on the outer wall of one side of the frame, and the width adjustment component is located on the symmetrical center line of the two adjusting screw rods.

[0007] Preferably, the frame is welded from 30-50 mm scrap steel plates, and a plurality of reinforcing ribs are arranged inside the frame.

[0008] Preferably, two of the positioning nuts form a group, and anti-slip grooves are provided on the surfaces of the two positioning nuts facing each other.

[0009] Preferably, a hydraulic push rod is disposed inside one end of the hydraulic cylinder, and one end of the hydraulic push rod penetrates to the outside of the frame, and a hydraulic valve connected to the hydraulic oil pipe is disposed on the top of the hydraulic cylinder.

[0010] Preferably, the width adjustment assembly includes a ring sleeved on the outside of the extension sleeve, and a threaded column is welded on the outer wall of one side of the ring, the external thread of the threaded column is sleeved with a threaded sleeve, a guide ring is fixedly arranged between the two threaded sleeves, a stabilizing frame is fixedly installed at the center of the outer wall of one side of the frame, and a rolling ball slidably inserted into the guide ring is arranged at the end of the stabilizing frame.

[0011] Preferably, a plurality of handles which are equidistantly distributed in a ring shape are welded to the outer wall of the threaded sleeve, and a ball head is welded to the end of the handle.

[0012] In the above technical solution, the utility model provides a special tool for disassembling a large coupling, which has the following beneficial effects:

[0013] (1) An adjusting screw is used to realize the connection between the device and the coupling, and the large lifting force of the hydraulic cylinder is used to realize the rapid disassembly of the bearing inside the coupling. It has the advantages of large bearing capacity, fast disassembly speed, simple structure and convenient manufacturing.

[0014] (2) After using the special tools designed in this invention, the work of disassembling parts becomes easy and efficient. It can not only quickly disassemble large couplings, but also ensure the safety of key parts such as couplings and large shafts during the entire disassembly process. This not only greatly improves the maintenance efficiency of the equipment and reduces the risk of equipment damage, but also saves the company a lot of outsourcing disassembly costs.

[0015] (3) The width adjustment component is set to enhance operational reliability. During use, it shows extremely high ease of operation and reliability, and has good concentricity performance. This allows parts such as couplings to remain stable and fast during disassembly and assembly, and provides good protection for parts such as couplings and large shafts, significantly improving assembly quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 A structural stereoscopic diagram of a special tool for disassembling a large coupling according to the utility model Figure 1 .

[0018] Figure 2 A structural stereoscopic diagram of a special tool for disassembling a large coupling according to the utility model Figure 2 .

[0019] Figure 3The present invention is a schematic diagram of a hydraulic cylinder structure provided by an embodiment of a special tool for disassembling a large coupling.

[0020] Figure 4 The present invention is a schematic diagram of the structure of a width adjustment component provided in an embodiment of a special tool for disassembling a large coupling.

[0021] 1 frame, 2 reinforcement ribs, 3 notches, 4 hydraulic cylinders, 5 adjusting screw rods, 6 positioning nuts, 7 locking nuts, 8 extension sleeves, 9 width adjustment components, 10 hydraulic push rods, 11 hydraulic valves, 12 collars, 13 threaded columns, 14 threaded sleeves, 15 handles, 16 guide rings, and 17 stabilizing frames. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] like Figure 1-4 As shown, a special tool for disassembling a large coupling provided by an embodiment of the utility model includes a frame 1, a plurality of notches 3 are provided on both sides of the frame 1, and an adjusting screw 5 is slidably inserted inside the notch 3, a hydraulic cylinder 4 is provided at the inner center of the frame 1, a positioning nut 6 is threadedly sleeved on one end of the adjusting screw 5, a locking nut 7 in contact with the frame 1 is threadedly sleeved on the outer side of the adjusting screw 5, and an extension sleeve 8 sleeved on the outside of the screw 5 is fixedly provided on the outer wall of one side of the locking nut 7, a width adjustment component 9 is provided on the outer wall of one side of the frame 1, and the width adjustment component 9 is located on the symmetrical center line of the two adjusting screws 5.

[0024] Specifically, in this embodiment, a frame 1 is included, and the frame 1 is welded by 30-50mm waste steel plates, and the thickness of the waste steel plates is selected to be 30mm. Since the tool is transformed from waste products, the tool has the characteristics of novel structure and low manufacturing cost, and a plurality of reinforcing ribs 2 are arranged inside the frame 1, and a plurality of notches 3 are arranged on both sides of the frame 1, and an adjusting screw rod 5 is slidably inserted inside the notch 3, and two adjusting screw rods 5 can slide inside the notch 3, so that the distance between the two adjusting screw rods 5 can be adjusted to meet the disassembly and use of mechanical parts of different specifications, and a hydraulic cylinder 4 is arranged at the inner center of the frame 1, and one end of the adjusting screw rod 5 is threadedly sleeved with a positioning nut 6, and when the coupling is disassembled, the adjusting screw rod 5 can be inserted into the coupling. The coupling is in the shaft, and the positioning bolt 6 is used to fix the coupling and the adjusting screw rod 5. The external thread of the adjusting screw rod 5 is sleeved with a locking nut 7 in contact with the frame 1, and an extension sleeve 8 sleeved on the outside of the screw rod 5 is fixedly arranged on the outer wall on one side of the locking nut 7. The extension sleeve 8 moves synchronously with the locking nut 7. The distance between the frame and the coupling is adjusted by the locking nut 7, which is convenient for the operator to start the hydraulic cylinder 4 to realize the jacking and removal of the bearing inside the coupling. A width adjustment component 9 is arranged on the outer wall on one side of the frame 1, and the width adjustment component 9 is located on the symmetrical center line of the two adjusting screw rods 5. Since the two sides of the width adjustment component 9 are symmetrical structures, the positions of the two adjusting screw rods 5 can be adjusted at the same time, so that the concentricity of the hydraulic cylinder 4 and the coupling to be disassembled is more consistent.

[0025] The utility model provides a special tool for disassembling a large coupling, which adopts an adjusting screw rod 5 to realize the connection between the device and the coupling, and utilizes the large lifting force of the hydraulic cylinder 4 to realize the rapid disassembly of the bearing inside the coupling. It has the advantages of large bearing capacity, fast disassembly speed, simple structure and convenient manufacturing.

[0026] In one embodiment of the present invention, two positioning nuts 6 form a group, and anti-slip grooves are provided on the opposite sides of the two positioning nuts 6. The close contact between the two positioning nuts 6 improves the stability of the coupling on the adjusting screw.

[0027] As another embodiment provided by the utility model, a hydraulic push rod 10 is arranged inside one end of the hydraulic cylinder 4, and one end of the hydraulic push rod 10 extends to the outside of the frame 1, and a hydraulic valve 11 connected to the hydraulic oil pipe is arranged on the top of the hydraulic cylinder 4. The hydraulic valve 11 is used to realize the connection between the hydraulic pump, the hydraulic oil pipe and the hydraulic cylinder 4. When the operator starts the hydraulic pump, the hydraulic oil enters the hydraulic valve 11 and the hydraulic cylinder 4 through the hydraulic oil pipe, thereby realizing the ejection of the hydraulic push rod 10 with a large lifting force, which is beneficial to the disassembly and use of large mechanical parts.

[0028] As another embodiment provided by the utility model, the width adjustment component 9 includes a collar 12 sleeved on the outside of the extension sleeve 8, and the collar 12 and the extension sleeve 8 are rotatably connected. A threaded column 13 is welded on the outer wall of one side of the collar 12, and a threaded sleeve 14 is sleeved on the external thread of the threaded column 13. A guide ring 16 is fixedly arranged between the two threaded sleeves 14. A stabilizing frame 17 is fixedly installed at the center of the outer wall of one side of the frame 1, and a rolling ball slidably inserted in the guide ring 16 is arranged at the end of the stabilizing frame 17. Since the stabilizing frame 17 is fixed on the outer wall of one side of the frame 1, the rotating ball is also a fixed structure. The structure can make the guide ring 16 rotate along the central axis. The operator holds the handle 15 to drive the threaded sleeve 14 to rotate. At the same time, the guide ring 16 rotates along the rotating ball. Under the action of the rotation of the threaded sleeve 14, the threaded column 13 is extended or recovered from the inside of the threaded sleeve 14 to adjust the distance between the two adjusting screw rods 5, so as to meet the disassembly and use of mechanical parts such as couplings of different specifications; a plurality of handles 15 with equal distances and annular distribution are welded on the outer wall of the threaded sleeve 14, and a ball head is welded at the end of the handle 15. The adopted handle 15 is convenient for people to rotate the threaded sleeve 14, making it more labor-saving.

[0029] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A special tool for disassembling a large coupling, comprising a frame (1), characterized in that: A plurality of slots (3) are provided on both sides of the frame (1), and an adjusting screw rod (5) is slidably inserted inside the slot (3). A hydraulic cylinder (4) is provided at the center of the frame (1). A positioning nut (6) is threadedly sleeved on one end of the adjusting screw rod (5). A locking nut (7) in contact with the frame (1) is threadedly sleeved on the outside of the screw rod (5), and an extension sleeve (8) sleeved on the outside of the adjusting screw rod (5) is fixedly provided on the outer wall of one side of the locking nut (7). A width adjustment component (9) is provided on the outer wall of one side of the frame (1), and the width adjustment component (9) is located on the symmetrical center line of the two adjusting screw rods (5).

2. A special tool for disassembling a large coupling according to claim 1, characterized in that: The frame (1) is welded from 30-50 mm scrap steel plates, and a plurality of reinforcing ribs (2) are arranged inside the frame (1).

3. A special tool for disassembling a large coupling according to claim 1, characterized in that: The two positioning nuts (6) form a group, and anti-slip grooves are arranged on the surfaces of the two positioning nuts (6) facing each other.

4. A special tool for disassembling a large coupling according to claim 1, characterized in that: A hydraulic push rod (10) is arranged inside one end of the hydraulic cylinder (4), and one end of the hydraulic push rod (10) penetrates to the outside of the frame (1). A hydraulic valve (11) connected to the hydraulic oil pipe is arranged on the top of the hydraulic cylinder (4).

5. A special tool for disassembling a large coupling according to claim 1, characterized in that: The width adjustment assembly (9) comprises a collar (12) sleeved on the outside of the extension sleeve (8), and a threaded column (13) is welded on the outer wall of one side of the collar (12), and a threaded sleeve (14) is sleeved on the outer thread of the threaded column (13), and a guide ring (16) is fixedly arranged between the two threaded sleeves (14), and a stabilizing frame (17) is fixedly installed at the center of the outer wall of one side of the frame (1), and a rolling ball slidably inserted into the guide ring (16) is arranged at the end of the stabilizing frame (17).

6. A special tool for disassembling a large coupling according to claim 5, characterized in that: A plurality of handles (15) which are equidistantly distributed in a ring shape are welded on the outer wall of the threaded sleeve (14), and a ball head is welded at the end of the handle (15).

Images