CN204621501U - A kind of bearing driver - Google Patents

Abstract

The utility model discloses a bearing assembly tool, which comprises a bearing seat, a pressing plate and at least three parallel pull rods. The bearing seat is provided with a coaxial bearing hole and a shaft hole. The pressing plate is connected with the bearing seat through each of the pull rods and Located outside the opening of the bearing hole, each of the tie rods is parallel to the axis of the bearing hole and distributed on the outside of its circumference, one end of each of the tie rods is fixedly connected to the bearing seat, and the other end passes through the bearing seat vertically. After the pressure plate is screwed with bolts, the pressure plate is provided with a through hole corresponding to the position of the bearing hole. The utility model has a simple structure, and the bearing is evenly stressed during the assembly process of the bearing, and the movement is stable, and the bearing will not be damaged.

Description

A bearing assembly tool

technical field

The utility model relates to a bearing assembly tool.

Background technique

At present, in the assembly process of the equipment, the assembly of the bearing is particularly important. In the assembly process of the bearing, we usually assemble the bearing and the shaft first, and then assemble the bearing and the shaft together with the bearing seat in the casing. In the assembly process of the bearing and the shaft, there are usually three assembly methods, 1. Hot loading method: heat the bearing and assemble it with the shaft; 2. Percussion method: knock the bearing inner ring and shaft assembly with external force; 3. Press in Method: Use a press to press the bearing and the shaft for assembly. When assembling the bearing and the shaft together with the position of the bearing seat processed in the casing, due to the different shapes and sizes of the machine, it is not suitable for the shrink-fit method and the press-in method, and the knocking method is basically used, that is, knocking the bearing. , Knock the bearing and the shaft into the bearing seat of the casing. The disadvantages of this method are: 1. The knocking position and the knocking person's posture are inconvenient, and it is not easy to use force; 2. Because the knocking posture is not It is convenient, and it is easy to accidentally damage the bearing when knocking; 3. The uneven force on the bearing will easily cause damage to the bearing and affect the service life of the bearing.

Utility model content

In view of the above-mentioned defects of the prior art, in order to solve the problem of uneven force and easy damage to the bearing when the bearing is assembled with the bearing seat in the fuselage, the utility model provides a bearing assembly tool.

In order to achieve the above purpose, the utility model provides a bearing assembly tool, the key of which is: it includes a bearing seat, a pressure plate and at least three parallel pull rods, the bearing seat is provided with a coaxial bearing hole and a shaft hole, and the pressure plate passes through Each of the pull rods is connected to the bearing seat and is located outside the opening of the bearing hole, each of the pull rods is parallel to the axis of the bearing hole and distributed on the outer side of its circumference, and one end of each of the pull rods is fixed to the bearing seat connection, the other end of which passes through the pressure plate vertically and is threaded with bolts, and a through hole is opened on the pressure plate, and the through hole corresponds to the position of the bearing hole.

Using the above scheme, when in use, first heat-fit or press-fit the bearing on the shaft, then insert the bearing and the shaft into the shaft hole and align the bearing with the bearing hole, and then tighten the bolts to push the pressure plate so that The bearing moves forward, one end of the bearing is tightly attached to the pressure plate, and the bearing is continuously pushed, and the other end will be inserted into the bearing hole until it reaches the assembly position. During the assembly process, since the pressure plate is perpendicular to the pull rod and the pull rod is parallel to the center line of the bearing hole, the bearing is evenly stressed and moves smoothly without damaging the bearing during the assembly process. The shaft has a linear guiding effect on the bearing during assembly, which can ensure that the moving direction of the bearing will not deviate, so that the bearing is more evenly stressed and moves more smoothly; moreover, the bearing and the shaft are assembled synchronously, which saves assembly time and reduces the number of installations. Fitting accuracy can be improved.

Preferably, a backing plate is provided between the bearing seat and the pressure plate, and the backing plate is located in the middle of each of the tie rods. The backing plate and the pressing plate are arranged in parallel and fixedly connected, and a perforation is opened on the backing plate. The perforation Corresponding to the position of the bearing hole. With the above structure, when the bearing is pressed into the bearing hole, the backing plate is in contact with the mounting surface of the bearing seat, and the contact surface will be smaller, and the unevenness of the contact surface will affect the installation accuracy of the bearing, and the larger the contact surface, the larger the contact surface. The higher the plane accuracy requirements for the mounting surface of the bearing seat will be. Therefore, by adopting the above-mentioned structure, the contact area between the original pressure plate and the mounting surface of the bearing seat can be realized by replacing the original pressure plate with a backing plate with a small area, which can effectively reduce the contact area and improve the installation accuracy of the bearing.

Preferably, the through hole is coaxial with the centerline of the bearing hole, and the diameter of the hole is slightly larger than the inner diameter of the bearing to be installed. With this structural scheme, the distribution of the contact surface between the backing plate and the bearing is more reasonable, and the force on the bearing is more uniform. At the same time, the hole diameter of the perforation is slightly larger than the inner diameter of the bearing to be installed, and the backing plate and the bearing have a larger effective contact surface.

Preferably, the backing plate is smaller than the bearing hole, and the backing plate can extend into the bearing hole. With this structural solution, the bearing can be conveniently assembled into the bearing hole.

Preferably, the sum of the thicknesses of the backing plate and the bearing to be installed is greater than the depth of the bearing hole. With this structural scheme, since the backing plate can be directly inserted into the bearing hole, when the depth of the bearing hole is greater than the thickness of the bearing, the bearing can be installed to the bottom of the bearing hole through the backing plate, and neither the pressure plate nor the backing plate will touch the bearing seat .

Preferably, the through hole is concentric with the bearing hole, and the diameter of the hole is slightly larger than the inner diameter of the bearing to be installed. With this structural scheme, the distribution of the contact surface between the backing plate or the pressure plate and the bearing is more reasonable, and the force on the bearing is more uniform. At the same time, the diameter of the through hole is slightly larger than the inner diameter of the bearing to be installed. Large effective contact surface.

Preferably, the backing plate is detachably and fixedly connected to the pressing plate. With this structural scheme, when installing different bearings, the backing plate can be easily disassembled and replaced, and the backing plate can also be changed in size according to the characteristics of the bearing.

Preferably, there are four pull rods and they are evenly distributed. With this structural scheme, the quantity is reasonable, the force on the pressing plate is more uniform, and the driving bearing is more stable.

Preferably, the pull rod is a threaded rod. With this structural scheme, the entire rod length of the pull rod is a threaded structure, which is convenient for processing and manufacturing, and also facilitates the connection of the two ends of the pull rod.

The beneficial effects of the utility model are: the utility model adopts the combination of the pull rod and the pressure plate, and by twisting the bolt on the pull rod, the pressure plate is pushed forward to move smoothly, and the shaft and the bearing are pushed into the shaft hole and the bearing hole at the same time. The structure is simple, the use is convenient and civilized, and the force is uniform, the bearing is not easy to be damaged, and the service life of the bearing is prolonged.

Description of drawings

Fig. 1 is the structural representation of embodiment 1 in the utility model;

Fig. 2 is the structural representation of embodiment 2 in the utility model;

Fig. 3 is a structural schematic diagram of the state of the bearing in Fig. 2 after installation.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Embodiment 1: As shown in Figure 1: a bearing assembly tool, including a bearing seat 1, a pressure plate 5 and at least three parallel rods 4, the bearing seat 1 is provided with a coaxial bearing hole 11 and a shaft hole 12, the The pressure plate 5 is connected to the bearing seat 1 through each of the pull rods 4 and is located outside the opening of the bearing hole 11. Each of the pull rods 4 is parallel to the axis of the bearing hole 11 and distributed on the outside of its circumference. One end of the pull rod 4 is fixedly connected with the bearing seat 1, and the other end is threaded with the bolt 6 after passing through the pressure plate 5 vertically. The pressure plate 5 is provided with a through hole 51, and the through hole 51 is connected with the bearing hole 11 concentric, and its aperture is slightly larger than the inner diameter of bearing 7 to be installed.

Embodiment 2: Combining 1, 2, and 3 as shown in the figure: it is basically the same as Embodiment 1, the difference is that a backing plate 8 is provided between the bearing seat 1 and the pressure plate 5, and the backing plate 8 is located in each of the In the middle of the pull rod 4, the backing plate 8 is arranged parallel to the pressing plate 5, and the backing plate 8 and the pressing plate 5 are fixedly connected by screws. The backing plate 8 is provided with a perforation 81, the perforation 81 is coaxial with the center line of the bearing hole 11, and its aperture is slightly larger than the inner diameter of the bearing 7 to be installed, the backing plate 8 is smaller than the bearing hole 11, The backing plate 8 can extend into the bearing hole 11, the sum of the thicknesses of the backing plate 8 and the bearing 7 to be installed is greater than the depth of the bearing hole 11, and the four pull rods 4 are evenly distributed . The pull rod 4 is a threaded rod.

In addition to the above-mentioned preferred embodiment, the backing plate 8 and the pressure plate 5 can also be an integral structure, the backing plate 8 is equivalent to a boss of the pressure plate 5, and the number of the pull rods 4 can be any one of 4-12 quantity.

When assembling and using, as shown in Figures 2 and 3, the bearing 7 is hot-fitted or press-fitted on the shaft 2 first, and then the bearing 7 and the shaft 2 are inserted into the shaft hole 11 as a whole, and the bearing 7 and the bearing hole 2 The position is aligned, and then by tightening the bolt 6, the pressure plate 5 can be pushed to move in the direction of the bearing hole 2, and the backing plate 8 on the pressure plate 5 will be in close contact with the end surface of the bearing 7 and move together, and continue to move continuously. The other side of the bearing 7 One end will continuously extend into the bearing hole 11 until it reaches the assembly position.

The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the utility model without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection defined by the claims .

Claims (9)

1. a bearing driver, it is characterized in that: comprise bearing block (1), pressing plate (5) and at least three parallel draw bars (4), this bearing block (1) is provided with dead eye (11) and the axis hole (12) of concentric, this pressing plate (5) to be connected with bearing block (1) by each described pull bar (4) and to be positioned at outside the aperture of described dead eye (11), the axis parallel of each described pull bar (4) and described dead eye (11) and be distributed in its outer circumferential, one end of each described pull bar (4) is fixedly connected with bearing block (1), its other end passes perpendicularly through described pressing plate (5) and is threaded with bolt (6) afterwards, described pressing plate (5) offers through hole (51), this through hole (51) is corresponding with the position of described dead eye (11).

2. a kind of bearing driver as claimed in claim 1, it is characterized in that: between described bearing block (1) and pressing plate (5), be provided with backing plate (8), this backing plate (8) is positioned at the centre of each described pull bar (4), described backing plate (8) be arranged in parallel with pressing plate (5) and is fixedly connected with, described backing plate (8) offers perforation (81), this perforation (81) is corresponding with the position of described dead eye (11).

3. a kind of bearing driver as claimed in claim 2, is characterized in that: described perforation (81) is coaxial with described dead eye (11) center line, and its aperture is slightly larger than the internal diameter of bearing to be installed (7).

4. a kind of bearing driver as claimed in claim 2 or claim 3, is characterized in that: described backing plate (8) is less than described dead eye (11), and described backing plate (8) can extend in described dead eye (11).

5. a kind of bearing driver as claimed in claim 4, is characterized in that: described backing plate (8) is greater than the degree of depth of described dead eye (11) with the thickness sum of bearing to be installed (7).

6. a kind of bearing driver according to any one of claim 1 or 2 or 3 or 5, is characterized in that: described through hole (51) and described dead eye (11) concentric, and its aperture is slightly larger than the internal diameter of bearing to be installed (7).

7. a kind of bearing driver according to any one of Claims 2 or 3 or 5, is characterized in that: described backing plate (8) is detachably fixedly connected with pressing plate (5).

8. a kind of bearing driver according to any one of claim 1 or 2 or 3 or 5, is characterized in that: described pull bar (4) has four and is evenly distributed.

9. a kind of bearing driver according to any one of claim 1 or 2 or 3 or 5, is characterized in that: described pull bar (4) is threaded rod.