Dismounting device for bearing close to gear

Abstract

The utility model discloses a dismounting device for a bearing close to a gear, and relates to the technical field of rail transit gearbox maintenance. The bearing comprises two sets of guide rods and a bearing body, the surfaces of the two sets of guide rods are sleeved with two sets of cross bar assemblies, tooth clamping assemblies are movably inserted into the cross bar assemblies, and bolts are inserted into the cross bar assemblies and the tooth clamping assemblies in a threaded mode. According to the device, a hydraulic machine is used for being matched with the device, the device is pulled by the hydraulic machine to move in the axial direction of the center shaft of the bearing body, then the bearing body is detached from the gear shaft, and compared with a traditional flame heating mode, the problems of uneven temperature and concentrated thermal stress caused by flame heating are avoided; meanwhile, open fire is avoided, potential safety hazards are eliminated, the device is particularly suitable for maintenance work in the environments such as rail transit facilities with extremely high safety requirements, risks such as fire disasters are greatly reduced, and the life safety of workers and the integrity of equipment are protected.

Description

Technical Field

[0001] This utility model relates to the field of rail transit gearbox maintenance technology, specifically to a bearing disassembly device located near the gear. Background Art

[0002] In the rail transit gearbox maintenance industry, a common method for disassembling bearings is to heat them with a flame to make them expand and detach, thereby achieving disassembly. This method is simple to operate, but it has obvious limitations in practice.

[0003] First, the existing flame heating process can easily lead to uneven temperature distribution around the bearing, resulting in thermal stress concentration and severely affecting the mechanical performance of the gear. Second, the use of open flames during flame heating poses safety hazards, especially in environments with extremely high safety requirements such as rail transit facilities. Open flame operations may cause fires, posing risks to maintenance work.

[0004] Therefore, a bearing removal device located near the gear is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a bearing disassembly device close to the gear in order to solve the problems mentioned in the background art.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0007] A bearing disassembly device near a gear includes two sets of guide rods and a bearing body. Two sets of crossbar assemblies are sleeved on the surfaces of the two sets of guide rods. A toothed clamp assembly is movably inserted into the crossbar assembly. Bolts are threaded into the crossbar assembly and the toothed clamp assembly for fixing the toothed clamp assembly and the crossbar assembly. Nuts are threaded on the ends of the two sets of guide rods.

[0008] Furthermore, a gear shaft is inserted into the inside of the bearing body, and the gear body is fixedly sleeved on the surface of the gear shaft.

[0009] Furthermore, the crossbar assembly includes a crossbar body that is movably inserted into two sets of guide rods, with openings on the opposite surfaces of the two sets of crossbar bodies, mounting holes on the crossbar body, and a first threaded hole on the crossbar body corresponding to the mounting holes.

[0010] Furthermore, the toothed clamp assembly includes a clamp plate that is inserted into a mounting hole, the surface of the clamp plate having a second threaded hole, and one side of the clamp plate having teeth.

[0011] Furthermore, when the card plate is inserted into the mounting hole, the second threaded hole and the first threaded hole are set in a corresponding manner, and the bolt is inserted into the internal threads of the second threaded hole and the first threaded hole to fix the card plate.

[0012] Furthermore, when the bearing body is disassembled, the surface of the clamping plate is fitted to the end face of the bearing body.

[0013] The beneficial effects of the utility model are as follows:

[0014] The gear clamp assembly is fixed to the crossbar assembly with bolts. The two sets of crossbar assemblies passing through the guide rod surface are pulled apart, allowing the gear clamp assembly to be placed under the bearing body and then closed. Using a hydraulic press in conjunction with this device, the device is pulled axially along the central axis of the bearing body, thereby disassembling the bearing body from the gear shaft. Compared with the traditional flame heating method, this method avoids the problems of uneven temperature and thermal stress concentration caused by flame heating, thus not affecting the mechanical properties of the gear body. At the same time, this device avoids the use of open flames, eliminating safety hazards. It is especially suitable for maintenance work in environments with extremely high safety requirements, such as rail transit facilities, greatly reducing the risk of fire and protecting the lives of personnel and the integrity of equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the gear disassembly state of this utility model;

[0016] Figure 2 This is a three-dimensional schematic diagram of the present invention;

[0017] Figure 3 This is a partial schematic diagram of the present invention;

[0018] Figure 4 This is a schematic diagram of the horizontal bar assembly of this utility model;

[0019] Figure 5 This is a schematic diagram of the toothed clip assembly of this utility model;

[0020] Reference numerals: 1. Crossbar assembly; 101. Crossbar body; 102. Opening; 103. Mounting hole; 104. First threaded hole; 2. Gear clamp assembly; 201. Clamping plate; 202. Second threaded hole; 203. Tooth; 3. Bolt; 4. Guide rod; 5. Nut; 6. Gear shaft; 7. Gear body; 8. Bearing body. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] like Figures 1 to 4 As shown, a bearing removal device near a gear includes two sets of guide rods 4 and a bearing body 8. Two sets of crossbar assemblies 1 are fitted onto the surfaces of the two sets of guide rods 4. A gear clamp assembly 2 is movably inserted into the crossbar assembly 1. Bolts 3 are threaded into the crossbar assembly 1 and the gear clamp assembly 2 for fixing the gear clamp assembly 2 and the crossbar assembly 1. Nuts 5 are threaded onto the ends of the two sets of guide rods 4. A gear shaft 6 is inserted into the interior of the bearing body 8, and a gear body 7 is fixedly fitted onto the surface of the gear shaft 6. More specifically, the gear clamp assembly 2 is fixed into the crossbar assembly 1 by the bolts 3. The two sets of crossbar assemblies 1, which pass through the surfaces of the guide rods 4, are pulled apart, allowing the gear clamp assembly 2 to be placed under the bearing body 8 and then closed. This causes the surface of the gear clamp assembly 2 to fit against the end face of the bearing body 8, and the end of the gear clamp assembly 2 to fit against the gear body 7 on the surface of the gear shaft 6. By using a hydraulic press in conjunction with this device, the device is moved axially along the central axis of the bearing body 8, thereby removing the bearing body 8 from the gear shaft 6.

[0026] The crossbar assembly 1 includes a crossbar body 101 movably inserted into two sets of guide rods 4. Openings 102 are formed on the opposite surfaces of the two sets of crossbar bodies 101. Mounting holes 103 are formed on the crossbar body 101, and a first threaded hole 104 is formed on the crossbar body 101 corresponding to the mounting holes 103. More specifically, by sliding the crossbar body 101 on the guide rods 4, the toothed clamp assembly 2 can be opened and closed. The toothed clamp assembly 2 is inserted into the mounting holes 103 and fixed to the crossbar body 101 by bolts 3.

[0027] The toothed clamp assembly 2 includes a clamping plate 201 that is inserted into the mounting hole 103. The surface of the clamping plate 201 has a second threaded hole 202, and one side of the clamping plate 201 has teeth 203. More specifically, the clamping plate 201 is inserted into the mounting hole 103 on the surface of the crossbar body 101, and the bolts 3 are threaded into the first threaded hole 104 and the second threaded hole 202, thereby fixing the clamping plate 201 and the crossbar body 101 together.

[0028] When the card plate 201 is inserted into the mounting hole 103, the second threaded hole 202 and the first threaded hole 104 are correspondingly arranged, and the bolt 3 is threaded into the second threaded hole 202 and the first threaded hole 104 to fix the card plate 201. More specifically, when the card plate 201 is installed into the mounting hole 103, after the second threaded hole 202 and the first threaded hole 104 are aligned, the bolt 3 is threaded into the second threaded hole 202 and the first threaded hole 104, thereby fixing the card plate 201 and the crossbar body 101.

[0029] When the bearing body 8 is disassembled, the surface of the clamping plate 201 is fitted against the end face of the bearing body 8. More specifically, by the correspondence between the clamping plate 201 and the bearing body 8, the device can be moved by a hydraulic press to remove the bearing body 8 from the gear shaft 6.

[0030] In summary: By fixing the gear clamp assembly 2 to the crossbar assembly 1 with bolts 3, and pulling apart the two sets of crossbar assemblies 1 that pass through the guide rod 4, the gear clamp assembly 2 is placed under the bearing body 8 and then closed, so that the surface of the gear clamp assembly 2 is in contact with the end face of the bearing body 8. At this time, the end of the gear clamp assembly 2 is in contact with the gear body 7 on the surface of the gear shaft 6. By using a hydraulic press in conjunction with this device, the device is pulled axially along the central axis of the bearing body 8, thereby removing the bearing body 8 from the gear shaft 6. Compared with the traditional flame heating method, this method avoids the problems of uneven temperature and thermal stress concentration caused by flame heating, thus not affecting the mechanical properties of the gear body 7. At the same time, this device avoids the use of open flames, eliminating safety hazards. It is especially suitable for maintenance work in environments with extremely high safety requirements, such as rail transit facilities, greatly reducing the risk of fire and protecting the lives of personnel and the integrity of equipment.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A bearing disassembly device near a gear, characterized in that, It includes two sets of guide rods (4) and a bearing body (8). Two sets of crossbar assemblies (1) are sleeved on the surface of the two sets of guide rods (4). A toothed clamp assembly (2) is movably inserted into the crossbar assembly (1). Bolts (3) are threaded into the crossbar assembly (1) and the toothed clamp assembly (2) for fixing the toothed clamp assembly (2) and the crossbar assembly (1). Nuts (5) are threaded on the ends of the two sets of guide rods (4).

2. The bearing disassembly device near the gear according to claim 1, characterized in that, The bearing body (8) has a gear shaft (6) inserted inside, and the gear body (7) is fixedly sleeved on the surface of the gear shaft (6).

3. The bearing disassembly device near the gear according to claim 1, characterized in that, The crossbar assembly (1) includes a crossbar body (101) that is movably inserted into two sets of guide rods (4). The two sets of crossbar bodies (101) have openings (102) on their opposite sides. The crossbar body (101) has mounting holes (103) and a first threaded hole (104) is provided on the crossbar body (101) at a location corresponding to the mounting holes (103).

4. The bearing disassembly device near the gear according to claim 3, characterized in that, The toothed clamp assembly (2) includes a clamp plate (201) inserted into the mounting hole (103), the surface of the clamp plate (201) is provided with a second threaded hole (202), and a toothed portion (203) is provided on one side of the clamp plate (201).

5. A bearing disassembly device near a gear according to claim 4, characterized in that, When the card plate (201) is inserted into the mounting hole (103), the second threaded hole (202) and the first threaded hole (104) are set in a corresponding manner, and the bolt (3) is threaded into the second threaded hole (202) and the first threaded hole (104) to fix the card plate (201).

6. A bearing disassembly device near a gear according to claim 4, characterized in that, When the bearing body (8) is disassembled, the surface of the clamping plate (201) is fitted to the end face of the bearing body (8).

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