CN207206326U - A kind of bearing disassembling device - Google Patents

Abstract

The utility model discloses a kind of bearing disassembling device, it is related to for fastening, connection, the instrument or bench device field of dismounting or clamping, including fixed plate, the bearing chuck being be arranged in parallel with fixed plate, be connected the connecting rod of plate and bearing chuck, fixed plate is provided with the yoke frame for being used for coordinating with installation axle pushing tow, the bearing chuck is provided with the U-type groove for being used for avoiding installation axle, the connecting rod is provided with least three, each connecting rod is parallel to each other and is triangularly arranged, the centre of form of triangle is placed on the center line of yoke frame, yoke frame is set to overlap the thrust direction i.e. bearing chuck of installation axle to the thrust direction of bearing and the axis of installation axle, improve the stability of device, solve the problems, such as bearing removal difficulty and extracting tool stability in use difference in the prior art.

Description

A bearing removal device

technical field

The utility model relates to the field of tools or desktop equipment for fastening, connecting, disassembling or clamping, in particular to a bearing dismounting device.

Background technique

As a commonly used power equipment, the stability of the rotation of the motor is very important. The failure of the rotation of the motor generally occurs on the bearing first. Therefore, in order to ensure the stable operation of the motor, the bearing needs to be replaced regularly. In the operation of replacing the bearing, dismantling the bearing is a very technical work. It is necessary to remove the bearing with force and avoid damage to the parts of the motor, especially the mating surface between the bearing and the shaft. Since the motor is generally placed in a relatively Due to the narrow space, the working clearance around the bearing is small, and it is impossible to effectively use the tensioner to complete the work. At present, methods such as prying and punching are generally required. On the one hand, the maintenance work efficiency is low and the labor intensity is high. On the other hand, it is easy to cause the motor shaft to shift or The stator is damaged, causing a major safety hazard to the safe operation of the motor.

The utility model patent with the authorized announcement number CN203592456U and the authorized announcement date of 2014.05.14 discloses a bearing puller. The bearing puller includes a jack, a fixing plate and a bearing chuck. The bearing chuck is provided with an arch gap. The arch gap forms a U-shaped groove for avoiding the installation shaft. The jack shell is fixed on the fixed plate. The fixed plate and the bearing chuck are connected together by a screw. The screw forms a connecting rod. The bearing is pushed from the The mounting shaft comes off. However, this bearing puller uses two lead screws to apply pulling force to the bearing chuck, and the bearing chuck is prone to tilt during the process of pulling the bearing, so that the load borne by the bearing becomes non-uniform, which affects the pulling force of the bearing. It brings a lot of resistance, and the increased friction between the inner ring of the bearing and the installation shaft will destroy the matching surface of the bearing and the installation shaft, which is not conducive to the matching accuracy of the new bearing and the installation shaft, so that eccentricity and slippage occur Phenomenon; In addition, if the jack shell is connected to the fixed plate, since the reaction force of the thrust of the jack acts on the joint between the jack shell and the fixed plate, it is easy to cause the joint to break.

Utility model content

The purpose of the utility model is to provide a bearing dismounting device to solve the problems in the prior art that the bearing is difficult to disassemble and the dismounting tool has poor stability in use.

In order to achieve the above purpose, the first technical solution of a bearing dismounting device of the present utility model is: the bearing dismounting device includes a fixed plate, a bearing chuck arranged parallel to the fixed plate, a connecting rod connecting the fixed plate and the bearing chuck, The fixing plate is provided with a push piece for pushing and cooperating with the installation shaft, the bearing chuck is provided with a U-shaped groove for avoiding the installation shaft, and there are at least three connecting rods, each connecting rod is parallel to each other and Arranged in a triangle, the centroid of the triangle is placed on the center line of the pusher, so that the tension of the connecting rod on the bearing chuck and the thrust of the pusher on the installation shaft are placed on the same straight line, that is, the axis of the installation shaft, to avoid The tension of the connecting rod on the bearing chuck deviates from the axis of the installation shaft, causing the bearing chuck to overturn, so that the load on the bearing placed on the bearing chuck is evenly distributed on the bearing surface of the bearing, improving the stability of the device and solving the problem There are problems in the technology that the bearing is difficult to remove and the stability of the removal tool is poor.

The second technical solution of a bearing dismounting device of the present utility model is: on the basis of the first technical solution of a bearing dismounting device of the present utility model, the number of the connecting rods is three, and the number of connecting rods is avoided. Too close to interfere with the bearing.

The third technical solution of the bearing dismounting device of the present utility model is: on the basis of the first technical solution of the bearing dismounting device of the present utility model, the bearing dismounting device also includes a jack fixed on the fixing plate, The jack includes a body and a push rod, and the push rod constitutes a push piece, and the jack is used as a power source to improve working efficiency and reduce labor intensity.

The fourth technical solution of a bearing dismounting device of the present utility model is: on the basis of the third technical solution of a bearing dismounting device of the present utility model, the bottom of the jack is fixed at the side of the fixing plate facing the bearing chuck On one side, the fixed plate bears the bending moment to avoid shear damage or even fracture at the connection between the jack shell and the fixed plate.

The fifth technical solution of a bearing dismounting device of the present utility model is: on the basis of any one of the technical solutions of the first to fourth technical solutions of a bearing dismounting device of the present utility model, the fixing The plate is circular to reduce volume and avoid interference.

The sixth technical solution of a bearing dismounting device of the present utility model is: on the basis of any one of the technical solutions of the first to fourth technical solutions of a bearing dismounting device of the present utility model, the triangular It is an equilateral triangle, and the centroid of the triangle coincides with the center of circle of the fixed plate, so that the structure is more compact.

The seventh technical solution of a bearing dismounting device of the present utility model is: on the basis of any one of the technical solutions of the first to fourth technical solutions of a bearing dismounting device of the present utility model, the bearing The chuck is horseshoe-shaped, and the horseshoe-shaped recess forms a U-shaped groove, which reduces the size of the bearing chuck and enables the bearing removal device to be used in occasions where the installation space is small.

The eighth technical solution of a bearing dismounting device of the present utility model is: on the basis of any one of the technical solutions of the first to fourth technical solutions of a bearing dismounting device of the present utility model, the fixing The plate and the bearing chuck are provided with a through hole for the connecting rod to pass through. The connecting rod is a screw rod. Two nuts are installed on the screw rod. The fixing plate and the bearing chuck are placed between the two nuts. The way of movably connecting the fixing plate and the bearing chuck is convenient for screwing the nut to adjust the distance between the fixing plate and the bearing chuck according to different installation requirements.

Description of drawings

Fig. 1 is the schematic diagram of the specific embodiment 1 of a kind of bearing removal device of the present utility model;

Fig. 2 is a schematic diagram of a fixed plate of a specific embodiment 1 of a bearing removal device of the present invention;

Fig. 3 is a schematic diagram of a bearing chuck of a specific embodiment 1 of a bearing dismounting device of the present invention;

Fig. 4 is a schematic diagram of a fixed plate of a specific embodiment 2 of a bearing removal device of the present invention;

Fig. 5 is a schematic diagram of a specific embodiment 4 of a bearing removal device of the present invention;

Fig. 6 is a schematic diagram of a specific embodiment 5 of a bearing removal device of the present invention;

Fig. 7 is a schematic diagram of a specific embodiment 6 of a bearing removal device of the present invention.

Detailed ways

Embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

A specific embodiment 1 of a bearing dismounting device of the present utility model, as shown in Figures 1 to 3, the bearing dismounting device includes a fixed plate 1, a bearing chuck 5 and a connecting rod, and the bearing chuck 5 is provided with a The U-shaped groove of the installation shaft 6, the fixed plate 1 and the bearing chuck 5 are arranged in parallel, the fixed plate 1 and the bearing chuck 5 are all provided with three through holes for the connecting rod to pass through, and the three through holes on the fixed plate 1 The hole is the fixed plate hole 7, and the fixed plate hole 7 is evenly distributed on the circumference with the center of the fixed plate 1 as the center of the circle. The three through holes on the bearing chuck 5 are the chuck hole 8, the chuck hole 8 and the fixed plate hole 7 One-to-one corresponding setting, so that the connecting rods are kept parallel, and the three fixing plate holes 7 and the three chuck holes 8 are respectively arranged in an equilateral triangle, so that the connecting rods are arranged in an equilateral triangle, so that the centroid of the triangle It coincides with the center of the fixed plate 1.

In this embodiment, the connecting rod is a screw rod 2, and three screw rods 2 pass through the fixing plate hole 7 and the chuck hole 8 to wear the fixing plate 1 and the bearing chuck 5 together, and each screw rod 2 is threadedly connected with Two nuts 10, one nut 10 is matched with the fixed plate stop surface formed by the side of the fixed plate 1 away from the bearing chuck 5, and the other nut 10 is formed by the side of the bearing chuck 5 away from the fixed plate 1 The stop surface of the bearing chuck is matched so that the fixed plate 1 and the bearing chuck 5 can slide between the two nuts 10 along the connection 2, so that the fixed plate 1 and the bearing can be adjusted at any time according to the dismounting stroke of the different bearing 4. The distance between the chucks 5 is convenient for the bearing dismantling device to cope with a variety of bearing dismantling work occasions. Of course, in other embodiments, the connecting rod 2 can also be fixedly connected with the fixing plate 1 and the bearing chuck 5 through two counter nuts respectively.

Preferably, the shape of the fixing plate 1 is circular, so as to reduce the size of the bearing removal device and avoid possible interference.

Preferably, in order to make the bearing removal device suitable for a narrower working space, the bearing chuck 5 is horseshoe-shaped, and the horseshoe-shaped recess forms a U-shaped groove, which is convenient for the bearing chuck 5 to be placed on the side of the bearing 4 close to the motor. The bearing removal device also includes a jack 3, the jack 3 includes a body and a push rod 3-1, the push rod 3-1 constitutes a push member, and the bottom of the jack 3 is fixed at the center of the side of the fixed plate 1 facing the bearing chuck 5 , so that the thrust of the ejector rod of the jack 3 on the installation shaft 6 and the thrust of the bearing chuck 5 on the bearing 4 are always on the same straight line, that is, the axis of the installation shaft 6, to avoid the turning of the bearing chuck 5, so that the three screw rods The centroid of the triangle formed by 2 is placed on the center line of the push rod 3-1.

The working process is as follows:

First place the horseshoe-shaped recess 9 of the bearing chuck 5 on the outer peripheral surface of the installation shaft 6, make the bearing chuck 5 stick to the side of the bearing 4 facing the motor, and then place the ejector rod 3-1 of the jack 3 in a compressed state Tighten the head of the mounting shaft 6 away from the end face of the motor, then tighten the nuts 10 placed on both sides of the fixed plate 1 and the bearing chuck 5, so that the bearing removal device is in the initial working position; start the jack 3, and the ejector rod of the jack 3 3-1 The extension exerts pressure on the installation shaft 6, and the bearing chuck 5 starts to push the bearing 4 to move toward the fixed plate 1 until the bearing 4 is completely disengaged from the installation shaft 6, and the disassembly is completed. After the disassembly is completed, there is no need to disassemble the bearing. After disassembly, it can be directly used for disassembly of the next set of bearings.

The bearing dismantling device replaces manual work by pushing the jack 3, reduces labor intensity, and does not need to disassemble the bearing dismantling device, avoids repeated assembly and disassembly, improves work efficiency, and can be used in a working environment with a small disassembly space.

The specific embodiment 2 of a bearing dismounting device of the present utility model differs from the specific embodiment 1 of a bearing dismounting device of the present utility model only in that: as shown in Figure 4, five screw rods 22 are provided, each The screw mandrels 22 are arranged parallel to each other in a triangle, three screw mandrels 22 are placed at the apex of the triangle, and the other two are placed at the intersection of the two waists of the triangle and the straight line parallel to the triangle base, and the straight line parallel to the triangle base passes through The centroid of the triangle.

The specific embodiment 3 of a bearing dismounting device of the present utility model differs from the specific embodiment 1 of a bearing dismounting device of the present utility model only in that: as shown in FIG. The connection of the chuck 35 is clamped by two counter nuts 310 .

The specific embodiment 4 of a bearing dismounting device of the present utility model differs from the specific embodiment 1 of a bearing dismounting device of the present utility model only in that the connecting rod is an ordinary rod, and the connecting rod is connected with the fixing plate and the bearing clip. Weld between plates.

The specific embodiment 5 of a bearing dismounting device of the present utility model differs from the specific embodiment 1 of a bearing dismounting device of the present utility model only in that: as shown in FIG. 6 , on the fixing plate 51 and the bearing chuck 55 Threaded holes are provided, and the threaded holes on the fixing plate 51 correspond to the threaded holes on the bearing chuck 55 one by one.

The specific embodiment 6 of a bearing dismounting device of the present utility model differs from the specific embodiment 1 of a bearing dismounting device of the present utility model only in that: as shown in Figure 7, the connecting rod is a bolt rod 62, and the bolt rod The head of 62 is in stop fit with one of the fixed plate 61 and the bearing chuck 65 , and the other is in stop fit with the nut 610 .

In other embodiments of the bearing dismounting device of the present utility model, the shape of the bearing chuck can be arbitrary according to actual work requirements.

In other embodiments of a bearing dismounting device of the present utility model, in order to achieve the purpose, the number of nuts used can be arbitrary.

In other embodiments of the bearing removal device of the present utility model, the number of connecting rods can be any number greater than three; the connecting rods can be double-ended studs.

The above content is a further detailed description of the utility model in combination with a specific implementation mode, and it cannot be determined that the specific implementation of the utility model is only limited to these descriptions. For those in the technical field to which the utility model belongs, on the premise of not departing from the concept of the utility model, some simple deduction or replacement can also be made, which should be regarded as the protection scope of the utility model.

Claims (8)

1. A bearing dismounting device, comprising a fixed plate, a bearing chuck arranged parallel to the fixed plate, a connecting rod connecting the fixed plate and the bearing chuck, the fixed plate is provided with a push piece for pushing and cooperating with the installation shaft, The bearing chuck is provided with a U-shaped groove for avoiding the installation shaft, which is characterized in that: there are at least three connecting rods, each connecting rod is parallel to each other and arranged in a triangle, and the centroid of the triangle is placed on the push piece on the centerline of . 2. A bearing removal device according to claim 1, characterized in that: the number of the connecting rods is three. 3 . The bearing removal device according to claim 1 , wherein the bearing removal device further comprises a jack fixed on the fixing plate, the jack includes a body and a push rod, and the push rod constitutes a push piece. 4 . 4 . The bearing removal device according to claim 3 , wherein the bottom of the jack is fixed on the side of the fixing plate facing the bearing chuck. 5 . 5. A bearing removal device according to any one of claims 1-4, characterized in that: the fixing plate is circular. 6. A bearing removal device according to any one of claims 1-4, wherein the triangle is an equilateral triangle. 7. A bearing removal device according to any one of claims 1-4, characterized in that: the bearing chuck is horseshoe-shaped, and the horseshoe-shaped recess forms a U-shaped groove. 8. A bearing removal device according to any one of claims 1-4, characterized in that: the fixing plate and the bearing chuck are provided with a through hole for the connecting rod to pass through, and the connecting rod is The screw rod is provided with two nuts, and the fixing plate and the bearing chuck are placed between the two nuts.