Tool for disassembling bearing of centrifugal machine

Abstract

The utility model discloses a tool for disassembling a centrifugal machine bearing, and relates to the technical field of bearing disassembling tools. The bearing box comprises a bearing box connecting disc, a plurality of frameworks are fixedly installed at one end of the bearing box connecting disc, and a bearing block is fixedly installed at one end of each framework. After the bottoms of the outer ring and the inner ring of the bearing are firmly wrapped and fixed through the two bearing inner ring pull rings and the bearing outer ring pull rings, a worker rotates the main shaft ejection mechanism again, and the applied force acts on the main shaft along with continuous approaching movement of the main shaft ejection mechanism towards the end part of the main shaft; due to the fact that the bearing is stably fixed by the bearing pull ring and the bearing inner and outer ring pull rings, the main shaft moves relative to the bearing under the pushing of the main shaft ejection mechanism, safe and lossless separation of the bearing and the main shaft is achieved, bearing deformation and main shaft damage caused by uneven force application in a traditional disassembling mode are avoided, and the disassembling efficiency is improved. And the efficiency and the reliability of the dismounting operation are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bearing dismounting tool technical field, specifically, especially related to a centrifuge bearing dismounting tool. BACKGROUND

[0002] In the operation process of the centrifuge, the bearing is a key motor driving component. When the bearing is damaged in the long-term high-strength use process, first, the operator needs to pull out the entire spindle and bearing from the centrifuge bearing box, and then dismount the damaged bearing from the spindle. This process often needs to consume a lot of manpower and time.

[0003] After searching, patent publication number: CN218242589U discloses a centrifuge bearing dismounting device, which belongs to the technical field of bearing dismounting tools, comprising: a positioning support, the positioning support comprises a base and a plurality of oppositely arranged positioning columns, the lower end of the positioning column is fixedly arranged on the base, and the upper end is matched with the nut hole arranged on the end of the horizontally placed centrifuge bearing box, the adjacent two positioning columns are symmetrically distributed on the two sides of the inner diameter of the centrifuge bearing box; an elastic moving mechanism, the lower end of the elastic moving mechanism is fixed on the upper part of the base, and the upper end abuts against one end of the spindle located inside the centrifuge bearing box and sleeved with the bearing, the elastic moving mechanism can separate the spindle and the bearing from the centrifuge bearing box by moving the position of the top; solve the problem that the centrifuge bearing is not easy to dismount, convenient to operate, save time and labor, and can also meet the use of centrifuge bearing boxes of different specifications;

[0004] In the above patent, it is explained how the spindle and bearing are dismounted from the centrifuge bearing box, but it is not explained in detail how the bearing is dismounted from the spindle. The common way to dismount the bearing from the spindle is to use simple crowbars, hammers and other tools to forcibly dismount. This way is extremely easy to cause uneven force, leading to serious deformation of the bearing during dismounting, not only further aggravating the damage of the bearing, but also causing permanent damage to the spindle that closely cooperates with it, and even may cause the spindle to be directly scrapped.

[0005] For the problems in the related art, no effective solution has been proposed so far. UTILITY MODEL CONTENTS

[0006] In view of the problems in the related art, the utility model proposes a centrifuge bearing dismounting tool to overcome the above technical problems existing in the prior art.

[0007] To solve the above technical problems, the utility model is realized by the following technical scheme:

[0008] The utility model discloses a centrifuge bearing dismounting tool, including bearing box connecting disc, one end fixed mounting of bearing box connecting disc has a plurality of framework, one end fixed mounting of a plurality of framework has the load block, one end fixed mounting of load block has fixed block, the inside thread mounting of fixed block has main shaft ejection mechanism, main shaft ejection mechanism with bearing box connecting disc same central axis, bearing box connecting disc on symmetry fixed mounting has the connecting box, and the hexagonal mobile guide mechanism is equipped on two connecting boxes, and the bearing pull ring is installed to one end of two hexagonal mobile guide mechanisms and each other is close, one end fixed mounting of bearing pull ring has bearing inner and outer ring pull ring, two bearing pull rings and two bearing inner and outer ring pull ring can all enclose a circle.

[0009] Further, a plurality of mounting holes are formed in the bearing box connecting disc, and a bolt is arranged in each of the mounting holes.

[0010] Further, the main shaft ejection mechanism comprises a main shaft ejection screw rod, the main shaft ejection screw rod is threadedly mounted on the fixed block, the main shaft ejection screw rod is coaxial with the bearing box connecting disc, and a driving cap is fixedly mounted at one end of the main shaft ejection screw rod.

[0011] Further, handgrip crossbars are fixedly mounted at both ends of the driving cap, and a main shaft ejection head is fixedly mounted at one end of the main shaft ejection screw rod, away from the driving cap.

[0012] Further, a storage groove is formed in the connecting box, and the bearing pull ring can be retracted into the storage groove.

[0013] Further, the push screw rod is rotatably mounted on the bearing pull ring, and two sliding rods are symmetrically arranged and slidably mounted on the connecting box.

[0014] Further, one end of each of the two sliding rods is fixedly mounted on the bearing pull ring, anti-disengagement blocks are fixedly mounted at the other ends of the two sliding rods, and a hexagonal block is fixedly mounted at one end of the push screw rod, away from the bearing pull ring.

[0015] Further, bearing outer ring wall anti-slip blocks are mounted on the inner wall of the bearing pull ring, and bearing inner and outer ring anti-slip blocks are mounted on the bearing inner and outer ring pull ring.

[0016] The utility model has the following beneficial effects:

[0017] The utility model discloses two hexagonal mobile guide mechanisms drive the bearing pull ring installed thereon to move close to each other, and the bearing pull ring also moves with the bearing inner and outer ring pull ring, after two bearing pull rings realize the close wrapping of the side wall of bearing and fix, after two bearing inner and outer ring pull ring also firmly wrap and fix the bottom of the outer ring and the inner ring of bearing, staff rotates the main shaft ejection mechanism again, along with the continuous close moving of main shaft ejection mechanism to the direction of main shaft end, the force that it adds will be to main shaft, because bearing has been fixed firmly by bearing pull ring and bearing inner and outer ring pull ring, under the impetus of main shaft ejection mechanism, main shaft will generate displacement relative to bearing, and then realize the safe, nondestructive separation of bearing and main shaft, avoid the damage of main shaft caused by the uneven force of traditional dismounting mode because of bearing deformation, greatly improve the efficiency and reliability of dismounting operation.

[0018] The utility model discloses after bearing box connecting disc is fixed, staff can rotate main shaft ejection mechanism, because the main shaft ejection mechanism and fixed block are between the thread installation, its main shaft ejection mechanism along the self central axis to the direction of main shaft end close moving, and contact main shaft end, along with the continuous movement of main shaft ejection mechanism, main shaft ejection mechanism constantly top out and separate from the bearing box of main shaft and bearing.

[0019] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be needed to introduce the drawing briefly, and obviously, the drawing in the following description is only some embodiments of the utility model, and for the ordinary skilled person in the art, other drawings can also be obtained according to these drawings without creating labor.

[0021] Figure 1 It is the three-dimensional structure diagram of the utility model;

[0022] Figure 2 It is the hexagonal mobile guide mechanism schematic diagram of the utility model;

[0023] Figure 3 It is the main shaft ejection screw overall schematic diagram of the utility model;

[0024] Figure 4 It is the hexagonal mobile guide mechanism overall schematic diagram of the utility model;

[0025] Figure 5 It is the push screw schematic diagram of the utility model.

[0026] In the drawings, the component list represented by each sign is as follows:

[0027] 1, bearing box connecting disc; 101, mounting hole; 102, bolt; 2, skeleton; 3, bearing block; 4, fixed block; 5, main shaft ejection mechanism; 501, main shaft ejection screw; 502, drive cap; 503, hand grip crossbar; 504, main shaft ejection head; 6, connecting box; 601, storage groove; 7, hexagonal movement guide mechanism; 701, push screw; 702, sliding rod; 703, anti-disengagement block; 704, hexagonal block; 8, bearing pull ring; 801, bearing outer ring wall anti-slip block; 9, bearing inner and outer ring pull ring; 901, bearing inner and outer ring anti-slip block. DETAILED DESCRIPTION

[0028] The technical solutions in the utility model embodiments will be clearly and completely described below with reference to the drawings in the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0029] In the description of the utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated components or elements must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation of the utility model.

[0030] Please refer to Figures 1-5 As shown in the drawing, the utility model is a centrifuge bearing dismounting tool, including bearing box connecting disc 1, one end of bearing box connecting disc 1 is fixedly installed with multiple skeletons 2, one end of multiple skeletons 2 is fixedly installed with bearing block 3, one end of bearing block 3 is fixedly installed with fixed block 4, the inside of fixed block 4 is screw-mounted with main shaft ejection mechanism 5, main shaft ejection mechanism 5 is coaxial with bearing box connecting disc 1, connecting box 6 is fixedly installed on bearing box connecting disc 1 symmetrically, hexagonal movement guide mechanism 7 is equipped on both connecting boxes 6, bearing pull ring 8 is installed on the end of two hexagonal movement guide mechanisms 7 close to each other, bearing inner and outer ring pull ring 9 is fixedly installed on one end of bearing pull ring 8, two bearing pull rings 8 and two bearing inner and outer ring pull rings 9 can enclose a circle.

[0031] Firstly, the main shaft and the bearing need to be disassembled from the bearing box, the threaded holes on the bearing box connecting disc 1 are symmetrically arranged on the bearing box, the bolts are passed through the bearing box connecting disc 1, and the bolts are fixed to the bearing box by a wrench. At this time, the main shaft ejection mechanism 5 is coaxial with the main shaft. It is important to note that the distance from the disassembly end of the main shaft to the disengagement end is greater than the distance from the bearing on the main shaft to the end of the main shaft. When disassembling the main shaft and the bearing from the bearing box, the plurality of skeletons 2 are used to connect the bearing box connecting disc 1 and the bearing block 3, so that the bearing block 3 and the bearing box connecting disc 1 are fixed firmly. The bearing block 3 is used to support the fixed block 4. After the bearing box connecting disc 1 is fixed, the staff can rotate the main shaft ejection mechanism 5. Since the main shaft ejection mechanism 5 and the fixed block 4 are threadedly installed, the main shaft ejection mechanism 5 moves along its own central axis towards the end of the main shaft and contacts the end of the main shaft. With the continuous movement of the main shaft ejection mechanism 5, the main shaft ejection mechanism 5 continuously ejects the main shaft and the bearing from the bearing box and disengages. Then the main shaft ejection mechanism 5 is reversed to move towards the position of the fixed block 4. Since the distance from the disassembly end of the main shaft to the disengagement end is greater than the distance from the bearing on the main shaft to the end of the main shaft, during the return movement, as long as the distance between the main shaft ejection mechanism 5 and the bearing pull ring 8 is greater than the distance between the bearing and the end of the main shaft, sufficient space is reserved for further operation of the bearing and the main shaft.

[0032] The main shaft and the bearing disassembled from the bearing box need to be further disassembled. Firstly, the main shaft and the bearing are placed on the central axis of the main shaft ejection mechanism 5. At this time, the staff rotates the two hexagonal moving guide mechanisms 7 by means of a hexagonal socket wrench, so that the two hexagonal moving guide mechanisms 7 drive the bearing pull rings 8 installed thereon to move towards each other. The bearing pull ring 8 also moves the bearing inner and outer ring pull ring 9. After the two bearing pull rings 8 tightly wrap and fix the side wall of the bearing, and the two bearing inner and outer ring pull rings 9 firmly wrap and fix the bottom of the outer ring and the inner ring of the bearing, the staff rotates the main shaft ejection mechanism 5 again. With the continuous movement of the main shaft ejection mechanism 5 towards the end of the main shaft, the force exerted by the main shaft ejection mechanism 5 will act on the main shaft. Since the bearing has been stably fixed by the bearing pull ring 8 and the bearing inner and outer ring pull ring 9, under the pushing of the main shaft ejection mechanism 5, the main shaft will displace relative to the bearing, thereby realizing the safe and damage-free separation of the bearing and the main shaft. This avoids the damage to the main shaft caused by the deformation of the bearing due to uneven force in the traditional disassembly method, greatly improving the efficiency and reliability of the disassembly operation.

[0033] In one embodiment, for the above-mentioned bearing box connecting disc 1, a plurality of installation holes 101 are formed on the bearing box connecting disc 1, and a bolt 102 is arranged in each of the installation holes 101.

[0034] The worker aligns the bearing housing connecting plate 1 with the corresponding threaded hole on the bearing housing. At this time, the mounting hole 101 corresponds to the threaded hole on the bearing housing. Then, the bolts 102 are passed through the mounting holes 101 in sequence, and the bolts 102 are tightened by wrench so that they are gradually screwed into and tightened in the threaded hole of the bearing housing. As the bolts 102 are tightened, the bearing housing connecting plate 1 will be installed on the bearing housing.

[0035] In one embodiment, the spindle ejection mechanism 5 includes a spindle ejection screw 501, which is threaded onto the fixing block 4. The spindle ejection screw 501 is coaxial with the bearing housing connecting plate 1, and a drive cap 502 is fixedly installed at one end of the spindle ejection screw 501.

[0036] Both ends of the drive cap 502 are fixedly installed with a hand grip bar 503, and the end of the spindle ejector screw 501 away from the drive cap 502 is fixedly installed with a spindle ejector head 504.

[0037] When the maintenance personnel prepare to disassemble the spindle and bearing, they first hold the handle bar 503 with both hands and rotate it, which then drives the drive cap 502 to rotate. The drive cap 502 drives the spindle ejector screw 501 to rotate in the threaded hole of the fixing block 4. The spindle ejector screw 501 will move linearly along its own central axis. The end of the spindle ejector screw 501 away from the drive cap 502 is fixedly installed with the spindle ejector head 504. As the spindle ejector screw 501 moves, the spindle ejector head 504 gradually approaches and eventually contacts the end of the spindle. As the spindle ejector screw 501 continues to rotate, the spindle ejector head 504 continuously pushes the spindle and bearing out of the bearing housing, thereby realizing the separation of the spindle and bearing from the bearing housing.

[0038] In one embodiment, the connecting box 6 has a storage groove 601 inside for the bearing pull ring 8 to be retracted, and the hexagonal moving guide mechanism 7 includes a push screw 701 and two sliding rods 702, with the push screw 701 threadedly installed on the connecting box 6.

[0039] The push screw 701 is rotatably mounted on the bearing ring 8, and the two sliding rods 702 are symmetrically arranged and slidably mounted on the connecting box 6.

[0040] One end of each of the two sliding rods 702 is fixedly mounted on the bearing pull ring 8, and the other end of the two sliding rods 702 is fixedly mounted with an anti-detachment block 703. The end of the pushing screw 701 away from the bearing pull ring 8 is fixedly mounted with a hexagonal block 704.

[0041] The bearing outer ring wall anti-skid block 801 is installed on the inner wall of the bearing pull ring 8, and the bearing inner and outer ring anti-skid block 901 is installed on the bearing inner and outer ring pull ring 9.

[0042] When the bearing needs to be disassembled, the maintenance personnel rotate the push screw 701 away from the hexagonal block 704 fixedly installed at one end of the bearing pull ring 8 by means of the hexagonal socket wrench, and since the push screw 701 is in threaded connection with the connecting box 6, it will move linearly when rotated, and since the push screw 701 is rotatably installed on the bearing pull ring 8, it will push the bearing pull ring 8 to move out of the storage groove 601 during its movement, and the two sliding rods 702 are slidably installed on the connecting box 6, one end of each of the two sliding rods 702 is fixedly installed on the bearing pull ring 8, and the other end of each of the two sliding rods 702 is fixedly installed with the anti-disengagement block 703, so that the sliding rods 702 can stably slide in the connecting box 6 when the push screw 701 pushes the bearing pull ring 8 to move, thereby not only providing stable support for the bearing pull ring 8, but also effectively preventing the bearing pull ring 8 from deviating or disengaging during movement.

[0043] With the bearing pull ring 8 gradually approaching the bearing, the bearing outer ring wall anti-skid block 801 installed on the inner wall of the bearing pull ring 8 starts to contact the outer wall of the bearing outer ring, and the two bearing outer ring wall anti-skid blocks 801 can increase the friction with the bearing outer ring, thereby stabilizing the clamping effect on the bearing, and at the same time, the bearing inner and outer ring anti-skid block 901 installed on the bearing inner and outer ring pull ring 9 can also increase the friction with the bottom of the bearing inner and outer ring, thereby ensuring that the bearing inner and outer ring pull ring 9 can firmly hold the bearing inner and outer ring during pulling, and effectively preventing the occurrence of slipping phenomenon, and then the staff rotates the hand-held crossbar 503, so that the main shaft ejection screw 501 drives the main shaft ejection head 504 to continuously move towards the main shaft end, and the force exerted by the main shaft ejection head 504 will act on the main shaft, and since the bearing has been fixed at this time, the main shaft will displace relative to the bearing under the pushing of the main shaft ejection head 504, thereby realizing the safe and non-damaging separation of the bearing and the main shaft, avoiding the damage to the main shaft caused by the uneven force exertion in the traditional disassembly mode, and greatly improving the efficiency and reliability of the disassembly operation.

[0044] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A tool for disassembling centrifuge bearings, comprising a bearing housing connecting plate (1), characterized in that: Multiple skeletons (2) are fixedly installed at one end of the bearing housing connecting plate (1). A bearing block (3) is fixedly installed at one end of the multiple skeletons (2). A fixing block (4) is fixedly installed at one end of the bearing block (3). A spindle ejection mechanism (5) is installed on the internal thread of the fixing block (4). The spindle ejection mechanism (5) is coaxial with the bearing housing connecting plate (1). Connecting boxes (6) are symmetrically fixedly installed on the bearing housing connecting plate (1). A hexagonal moving guide mechanism (7) is provided on each of the two connecting boxes (6). A bearing pull ring (8) is installed at one end of the two hexagonal moving guide mechanisms (7) that are close to each other. A bearing inner and outer ring pull ring (9) is fixedly installed at one end of the bearing pull ring (8). The two bearing pull rings (8) and the two bearing inner and outer ring pull rings (9) can form a circle.

2. The centrifuge bearing disassembly tool according to claim 1, characterized in that, The bearing housing connecting plate (1) has multiple mounting holes (101), and each mounting hole (101) is provided with a bolt (102).

3. The centrifuge bearing disassembly tool according to claim 1, characterized in that, The spindle ejection mechanism (5) includes a spindle ejection screw (501), which is threaded onto the fixed block (4). The spindle ejection screw (501) is coaxial with the bearing housing connecting plate (1), and a drive cap (502) is fixedly installed at one end of the spindle ejection screw (501).

4. A tool for disassembling centrifuge bearings according to claim 3, characterized in that, Both ends of the drive cap (502) are fixedly equipped with hand grips (503), and the end of the spindle ejector screw (501) away from the drive cap (502) is fixedly equipped with a spindle ejector head (504).

5. A centrifuge bearing disassembly tool according to claim 1, characterized in that, The connecting box (6) has a storage groove (601) for the bearing pull ring (8) to be retracted. The hexagonal moving guide mechanism (7) includes a push screw (701) and two sliding rods (702). The push screw (701) is threadedly installed with the connecting box (6).

6. A centrifuge bearing disassembly tool according to claim 5, characterized in that, The push screw (701) is rotatably mounted on the bearing ring (8), and the two sliding rods (702) are symmetrically arranged and slidably mounted on the connecting box (6).

7. A tool for disassembling centrifuge bearings according to claim 6, characterized in that, One end of each of the two sliding rods (702) is fixedly mounted on the bearing pull ring (8), and the other end of the two sliding rods (702) is fixedly mounted with an anti-detachment block (703). The end of the push screw (701) away from the bearing pull ring (8) is fixedly mounted with a hexagonal block (704).

8. A centrifuge bearing disassembly tool according to claim 7, characterized in that, The bearing pull ring (8) is equipped with an outer ring anti-slip block (801) on its inner wall, and the bearing inner and outer ring pull rings (9) are equipped with inner and outer ring anti-slip blocks (901).

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