Simple disc pulling device

Abstract

The utility model belongs to the technical field of dismounting tools, and discloses a simple disc pulling device which comprises a fixing plate, a supporting assembly and a fixing assembly, a first threaded hole is formed in the fixing plate, a first screw rod is arranged in the first threaded hole in a threaded fit mode, and the first screw rod can move up and down in the vertical direction; the supporting assemblies are arranged on the two sides of the fixing plate and can move up and down in the vertical direction. The fixing assembly comprises at least two connecting ropes, one ends of the connecting ropes are connected with the fixing plate in a sliding mode, the other ends of the connecting ropes are fixedly connected with hooks, and the hooks are used for fixing machine pump parts. Through the arrangement of the connecting rope and the mode that the connecting rope is in sliding connection with the fixing plate, the connecting rope can change the distance between the hooks through sliding, so that the device is suitable for parts of any size, and the problems that the sizes of internal parts of a pump are different, the positions of the hooks of the disc pulling device are difficult to adjust, and disassembly of pump parts of multiple sizes cannot be met are solved.

Description

Technical Field

[0001] This utility model belongs to the field of disassembly tool technology, specifically relating to a simple disc puller. Background Technology

[0002] A disc remover is a tool used to remove disc-shaped parts from shaft-like components. As a pump maintenance worker in a repair center, I frequently disassemble parts such as motor impellers and small bearings during daily maintenance work. To improve work efficiency, I developed a solution, as described in Chinese Utility Model Patent Application No. CN201320609854.0, which discloses a disc remover consisting of a fixed disc and a jack. The fixed disc is a circular disc with 3 or 4 pairs of fixed arms evenly arranged around its side, forming an integral structure. Each pair of fixed arms is hinged with a pull claw. The pull claw is an integral rod-shaped structure consisting of a front rod, a rear rod, and a claw hook. The front and rear rods are of equal length and form an angle between them. The claw hook also forms an angle with the rear rod, with its tip facing the side where the angle between the front and rear rods forms. All claw hooks face the center of the fixed disc. This disc remover has a simple structure, is quick to operate, and saves time and effort. It overcomes the time-consuming and labor-intensive shortcomings of existing manual disk pullers, and also avoids the complex structural design of existing automatic disk pullers, thus reducing costs.

[0003] However, the automatic (hydraulic jack type) plate puller is difficult to carry for routine maintenance of pumps and machines, and the different sizes of the internal parts of the pumps and machines make it difficult to adjust the position of the plate puller hook, which cannot meet the needs of disassembling pump parts of various sizes. Summary of the Invention

[0004] Based on this, this application provides a simplified plate puller to solve the problem that it is difficult to carry an automatic (hydraulic jack type) plate puller for daily maintenance of pumps and machines, and that it is difficult to adjust the position of the plate puller hook due to the different sizes of the internal parts of the pumps and machines, which cannot meet the problem of disassembling pump parts of various sizes.

[0005] The technical solution to the above-mentioned technical problems in this application is as follows:

[0006] A simple disc puller, comprising:

[0007] The system includes a fixed plate, a support assembly, and a fixing assembly. The fixed plate has a first threaded hole, and a first screw is threaded into the first threaded hole. The first screw can move up and down in the vertical direction. The support assembly is located on both sides of the fixed plate and can also move up and down in the vertical direction. The fixing assembly includes at least two connecting ropes. One end of each connecting rope is slidably connected to the fixed plate, and the other end is fixedly connected to a hook for fixing pump parts.

[0008] Preferably, the connecting rope is an adjustable chain.

[0009] Preferably, one end of the connecting rope is provided with a fixing member, and the fixing plate is provided with a sliding groove, wherein the fixing member slides and is limited in fit with the sliding groove.

[0010] Preferably, the fastener includes a bolt and a first nut, one end of the bolt passes through the groove and is threadedly connected to the first nut, and the end of the bolt away from the first nut is provided with a through hole, and the connecting rope is detachably connected to the through hole.

[0011] Preferably, the fastener further includes a second nut, which is disposed at the end of the bolt away from the first nut and located between the through hole and the fixing plate.

[0012] Preferably, the support assembly includes at least two second screws, the fixing member is provided with second threaded holes, and the second threaded holes are symmetrically arranged on both sides of the fixing plate. The second screws are threadedly engaged with the second threaded holes, and the second screws can move in the vertical direction to support the fixing plate.

[0013] Preferably, one end of the first screw is provided with a cylinder, which is used to rotate the first screw.

[0014] Preferably, a third screw is provided inside the cylinder, and limit blocks are provided at both ends of the third screw. The size of the limit blocks is not less than the cross-sectional size of the cylinder, and the third screw can slide along the length direction of the cylinder.

[0015] The technical solution adopted in this application can achieve the following beneficial effects:

[0016] 1. By setting a connecting rope and sliding it to the fixed plate, the distance between the hooks can be changed by sliding the rope, thus making it suitable for parts of any size. This solves the problem of different sizes of internal pump parts, difficulty in adjusting the position of the puller hook, and inability to meet the disassembly requirements of pump parts of various sizes.

[0017] 2. By replacing the jack with a first screw, the overall weight of the equipment is reduced, and the threaded connection makes installation and disassembly convenient, solving the problems of difficulty in carrying and complex installation and disassembly.

[0018] 3. By sliding the connecting rope to the fixed plate, the connecting rope can slide and is perpendicular to the fixed plate after being stressed, thus solving the problem of uneven stress caused by the connecting rope not being vertical. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the simplified disc puller of this application. Figure 1 .

[0020] Figure 2 This is a schematic diagram of the simplified disc puller of this application. Figure 2 .

[0021] Figure 3 This is a schematic diagram of the disassembly of the simplified disk puller of this application. Figure 1 .

[0022] Figure 4 This is a schematic diagram of the disassembly of the simplified disk puller of this application. Figure 2 .

[0023] Figure 5 This is a partial schematic diagram of the simplified disc puller of this application.

[0024] In the figure: fixing plate 100, first threaded hole 101, second threaded hole 102, slide groove 103, first screw 110, cylinder 120, third screw 130, support assembly 200, second screw 210, fixing assembly 300, connecting rope 310, hook 320, fastener 330, first nut 331, second nut 332, bolt 333, through hole 334. Detailed Implementation

[0025] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0026] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," "top," "bottom," "end," "top," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Please see Figures 1 to 5This application provides a simple plate puller, comprising: a fixed plate 100, a support assembly 200, and a fixing assembly 300. The fixed plate 100 has a first threaded hole 101, and a first screw 110 is threaded into the first threaded hole 101. The first screw 110 can move up and down in the vertical direction. The support assembly 200 is disposed on both sides of the fixed plate 100 and can move up and down in the vertical direction. The fixing assembly 300 includes at least two connecting ropes 310. One end of the connecting rope 310 is slidably connected to the fixed plate 100, and the other end is fixedly connected to a hook 320, which is used to fix pump parts.

[0029] Specifically, the fixing plate 100 is made of, but is not limited to, a long strip of iron plate, and the support component 200 is made of, but is not limited to, steel bar supports, bolts, etc., and its height can be adjusted by sliding up and down or rotating. A first threaded hole 101 is provided at the center of the fixing plate 100 (the intersection of the center line in the length direction and the center line in the width direction). The first threaded hole 101 is matched with the first screw 110 (the other end of the first screw 110 is set as tapered). The length of the first screw 110 is not less than the length of the support component 200. By rotating the first screw 110 clockwise or counterclockwise, it rotates within the first threaded hole 101, thereby realizing the up and down movement of the first screw 110. The connecting rope 310 is made of, but is not limited to, a chain, steel wire, etc., preferably a chain. The connection is made by setting a sliding groove 103 or by snap-fitting. The distance between two adjacent chains can be adjusted by sliding or snap-fitting. The hook 320 and the connecting rope 310 are made of, but is not limited to, a ball seat, etc., to ensure that the hook 320 can rotate in any direction.

[0030] Further, adjust the support assembly 200 to fix it to the ground or to the pump, and position one end of the first screw 110 in the central groove of the pump shaft. Adjust the position of the connecting rope 310 so that the distance between two adjacent connecting ropes 310 is the same as that between the parts. Hang the hooks 320 on the opposite sides of the parts to be removed. By rotating the first screw 110, straighten the connecting rope 310, and continue to rotate the first screw 110 to move the parts vertically upward until the parts are removed.

[0031] The technical solution of this application, which employs a simplified disc puller, can achieve the following beneficial effects:

[0032] 1. By setting a connecting rope 310 and sliding the connecting rope 310 to the fixed plate 100, the connecting rope 310 can slide to change the distance between the hooks 320, thus making it suitable for parts of any size. This solves the problem that the size of the internal parts of the pump is different, the position of the puller hook 320 is difficult to adjust, and it cannot meet the problem of disassembling pump parts of multiple sizes.

[0033] 2. By replacing the jack with a first screw 110, the overall weight of the equipment is reduced, and the threaded connection makes installation and disassembly convenient, solving the problems of difficulty in carrying and complex installation and disassembly.

[0034] 3. By sliding the connecting rope 310 to the fixed plate 100, the connecting rope 310 can slide, and the connecting rope 310 is perpendicular to the fixed plate 100 after being subjected to force, thus solving the problem of uneven force caused by the connecting rope 310 not being vertical.

[0035] In the above solution, the connecting rope 310 is an adjustable chain. Traditional disc pullers are difficult to adjust the direction of the bottom hook 320 when removing the impeller and small parts. During operation, the hook 320 needs to be removed, the disc removed, and the upper part of the disc puller reassembled. This application solves the problem of the inability to freely adjust the length and direction of the hook 320 by setting two opposing adjustable chains to connect the hook 320. The chains are high-strength round link chains made of high-quality alloy steel, and are rigging made of metal chain links (the adjustable chain is made of annular iron rings and annular buckles connected together; the annular buckles are C-shaped, with a threaded sleeve at the opening; by rotating the threaded sleeve up and down, a closed iron ring is formed).

[0036] In a preferred embodiment of this application, one end of the connecting rope 310 is provided with a fixing member 330, and the fixing plate 100 is provided with a sliding groove 103. The fixing member 330 slides and is limitedly engaged with the sliding groove 103. The direction of the sliding groove 103 on the fixing plate 100 is parallel to the length direction of the fixing plate 100, and two sliding grooves 103 are provided, symmetrically on both sides of the first threaded hole 101. The fixing member 330 is, but is not limited to, bolts 333, nuts, snap-fit ​​screws, etc. One end of the fixing member 330 is detachably connected to the connecting rope 310 (by binding, pin insertion, etc.). The connecting rope 310 is fixed to the fixing plate 100 by the fixing member 330, and the fixing member 330 can be slid within the sliding groove 103 by opening the fixing member 330, thereby moving the connecting rope 310. The operation is simple and convenient.

[0037] Furthermore, the fixing component 330 includes a bolt 333 and a first nut 331. One end of the bolt 333 passes through the sliding groove 103 and is threadedly connected to the first nut 331. A through hole 334 is provided at the end of the bolt 333 away from the first nut 331, and the connecting rope 310 is detachably connected to the through hole 334. The fixing component 330 also includes a second nut 332, which is disposed at the end of the bolt 333 away from the first nut 331 and located between the through hole 334 and the fixing plate 100. The first nut 331 and the second nut 332 are respectively disposed on the upper and lower end faces of the fixing plate 100. The bolt 333 passes through the first nut 331, the second nut 332, and the sliding groove 103. By rotating the first nut 331 and the second nut 332, the bolt 333 is fixed to the fixing plate 100. By rotating the first nut 331 in the opposite direction, the bolt 333 can slide along the extension direction of the sliding groove 103, thereby driving the connecting rope 310 to slide; the operation is simple and convenient. By setting a through hole 334, the connecting rope 310 is snapped into the through hole 334, thereby solving the problem of difficult installation of the connecting rope 310 and making the replacement of the connecting rope 310 more convenient.

[0038] In the above scheme, the support component 200 includes at least two second screws 210, the fixing member 330 is provided with a second threaded hole 102, and the second threaded hole 102 is symmetrically arranged on both sides of the fixing plate 100. The second screws 210 are threadedly engaged with the second threaded holes 102, and the second screws 210 can move in the vertical direction to support the fixing plate 100. A second threaded hole 102 is provided on the fixing part 330 (a round hole can be opened and a matching nut can be set on the round hole). The second threaded hole 102 is located on the side of the slide groove 103 away from the first threaded hole 101. By rotating the second screw 210, it can be rotated in the second threaded hole 102, thereby realizing the up and down movement of the second screw 210. Depending on the flatness of the ground or the surface of the pump, the height of the two second screws 210 can be adjusted so that the first screw 110 coincides with the central axis of the pump shaft, and the fixing plate 100 is perpendicular to the first screw 110 (the central axis of the pump). By independently setting at least two opposite second screws 210, the problem of uneven contact surface of the second screw 210 and tilt of the fixing plate 100, which leads to difficulty in removing parts, is solved.

[0039] In another preferred embodiment of this application, a cylinder 120 is provided at one end of the first screw 110, and the cylinder 120 is used to rotate the first screw 110.

[0040] The length of the cylinder 120 is much smaller than the length of the first screw 110, but larger than the diameter of the first screw 110. The extension direction of the cylinder 120 is perpendicular to the first screw 110. The operator can adjust the position of the first screw 110 by rotating the cylinder 120 by holding it in his hand. By setting the cylinder 120, the gripping area of ​​the operator is increased, which solves the problem of the difficulty in rotating the first screw 110.

[0041] Furthermore, a third screw 130 is provided inside the cylinder 120, and limit blocks are provided at both ends of the third screw 130. The size of the limit blocks is not less than the cross-sectional size of the cylinder 120, and the third screw 130 can slide along the length direction of the cylinder 120.

[0042] The length of the third screw 130 is greater than that of the cylinder 120, and the third screw 130 can slide inside the cylinder 120. When the operator rotates the cylinder 120, the position of the third screw 130 can be adjusted to make rotation easier. If the third screw 130 is located in the middle of the cylinder 120, it is difficult to rotate the first screw 110. In this case, the third screw 130 can be slid so that one end contacts one end of the cylinder 120, and then the operator can hold the end away from the cylinder 120 and rotate it. The operation is simple and convenient, solving the problem that it is difficult to rotate the first screw 110 manually.

[0043] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A simple disc puller, characterized in that, include: A fixing plate is provided with a first threaded hole, and a first screw is threaded into the first threaded hole. The first screw can move up and down in the vertical direction. Support components, which are disposed on both sides of the fixed plate and are movable vertically; and The fixing component includes at least two connecting ropes, one end of which is slidably connected to the fixing plate, and the other end is fixedly connected to a hook for fixing pump parts.

2. The simplified disc puller as described in claim 1, characterized in that, The connecting rope is an adjustable chain.

3. The simplified disc puller as described in claim 2, characterized in that, One end of the connecting rope is provided with a fixing member, and the fixing plate is provided with a sliding groove. The fixing member slides and is limited in fit with the sliding groove.

4. The simplified disc puller as described in claim 3, characterized in that, The fastener includes a bolt and a first nut. One end of the bolt passes through the groove and is threadedly connected to the first nut. The end of the bolt away from the first nut has a through hole, and the connecting rope is detachably connected to the through hole.

5. The simplified disc puller as described in claim 4, characterized in that, The fastener also includes a second nut, which is disposed at the end of the bolt away from the first nut and located between the through hole and the fixing plate.

6. The simplified disc puller as described in claim 3, characterized in that, The support assembly includes at least two second screws, and the fixing member is provided with second threaded holes, which are symmetrically arranged on both sides of the fixing plate. The second screws are threadedly engaged with the second threaded holes, and the second screws can move in the vertical direction to support the fixing plate.

7. The simplified disc puller as described in claim 1, characterized in that, One end of the first screw is provided with a cylinder, which is used to rotate the first screw.

8. The simplified disc puller as described in claim 7, characterized in that, A third screw is provided inside the cylinder, and limit blocks are provided at both ends of the third screw. The size of the limit blocks is not less than the cross-sectional size of the cylinder, and the third screw can slide along the length direction of the cylinder.

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