CN212146218U - Novel bearing puller - Google Patents

Abstract

The utility model provides a novel bearing puller, which comprises a puller, a stop iron, a jack and two screw rods, wherein the puller is provided with an avoiding groove for sleeving a motor shaft, the puller is an integrated structure with an axisymmetric shape, and the puller is provided with two screw holes in an axisymmetric manner; the jack is arranged on the stop iron, one end of each screw rod is connected with the stop iron, and the other end of each screw rod is connected with one screw hole of the puller. When the disassembly operation is carried out, the novel bearing puller is assembled, the end face of the puller is abutted to the end face of the part to be disassembled, the ejection shaft of the jack is abutted to the motor shaft, the jack is driven, and the part to be disassembled is pulled out of the motor shaft by the puller. The puller has the advantages of firm and firm structure, uniform stress and relatively high structural strength, can easily disassemble parts on large electromechanical equipment, can keep the contact surface of a motor shaft smooth, is not easy to damage the shaft surface, and can effectively prolong the service life.

Description

Novel bearing puller

Technical Field

The utility model belongs to the technical field of the dismouting equipment, in particular to novel bearing draws horse.

Background

The bearing puller is used as a necessary tool for disassembling parts such as a bearing, an end cover, a fan and the like in electromechanical equipment, is widely used in the process of equipment maintenance, can be roughly divided into a claw type puller and a chuck type puller, and is suitable for disassembling different types of bearings, end covers and the like. The chuck type puller is generally used for large-scale equipment.

Because the high-voltage motor has large power, the volume is relatively large, the torque is large, and the motor shaft drives the torque by keys and friction force. The fit clearance between the shaft and the coupling (coupling) is small, and part of the fit clearance is interference fit. The running time is long, the gap among the coupling, the fan and the rotating shaft can be corroded and other impurities enter, so that the disassembly resistance is extremely high, the finished puller which can be purchased in the market is deformed and scrapped due to the over-limit stress during disassembly, the puller cannot be used, and no effective tool can be used.

Therefore, how to provide a novel bearing puller which can prolong the service life is a problem to be solved urgently by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel bearing draws horse can improve life.

In order to solve the technical problems, the utility model provides a novel bearing puller, which comprises a puller, a stop iron, a jack and two screw rods, wherein,

the puller is provided with an avoiding groove used for being sleeved on a motor shaft, the puller is an integrally formed structure in an axisymmetric shape, and the puller is axially symmetrically provided with two screw holes;

the jack is arranged on the stop iron, one end of each screw rod is connected with the stop iron, and the other end of each screw rod is connected with one screw hole of the puller.

Preferably, in the above-described novel bearing puller, the avoiding groove is a U-shaped open groove.

Preferably, in the above new bearing puller, the puller is a rectangular plate.

Preferably, in the above new bearing puller, a groove for clamping a part to be disassembled is provided at the outer edge of the U-shaped opening groove.

Preferably, in the above new bearing puller, the center of the semicircle of the U-shaped open slot and the two screw holes are located on the same reference line.

Preferably, in the above new bearing puller, a semi-circle radius of the U-shaped open slot is larger than a radius of the motor shaft.

Preferably, in the above new bearing puller, the jack is a hydraulic jack, a screw jack or a rack jack.

Preferably, in the novel bearing puller, a steel plate with the thickness of 100mm +/-10 mm is adopted by the puller.

The utility model provides a novel bearing puller, which comprises a puller, a stop iron, a jack and two screw rods, wherein the puller is provided with an avoiding groove for sleeving a motor shaft, the puller is an integrated structure with an axisymmetric shape, and the puller is provided with two screw holes in an axisymmetric manner; the jack is arranged on the stop iron, one end of each screw rod is connected with the stop iron, and the other end of each screw rod is connected with one screw hole of the puller. When the disassembly operation is carried out, the novel bearing puller is assembled, the end face of the puller is abutted to the end face of the part to be disassembled, the ejection shaft of the jack is abutted to the motor shaft, the jack is driven, and the part to be disassembled is pulled out of the motor shaft by the puller. The puller is an integrally formed structure in an axial symmetric shape, so that the structure is solid and firm, uniform in stress and relatively high in structural strength, parts on large electromechanical equipment can be easily disassembled, the contact surface of a motor shaft can be kept smooth, the shaft surface is not prone to being damaged, and the service life can be effectively prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic view of the connection between a novel bearing puller and a bearing to be disassembled on a shaft provided by the scheme;

fig. 2 is a schematic structural diagram of the puller provided by the scheme.

In the upper diagram:

pulling a horse 1; a stop iron 2; a jack 3; a screw 4; a nut 5; a motor shaft 6; and a bearing 7.

Detailed Description

The core of the utility model is to provide a novel bearing draws horse can improve life.

In order to make those skilled in the art better understand the technical solutions provided by the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-2, the present invention provides a novel bearing puller, which includes a puller 1, a stop iron 2, a jack 3 and two screws 4, wherein the puller 1 is provided with an avoiding groove for sleeving a motor shaft 6, the puller 1 is an integrally formed structure with an axisymmetric shape, and the puller 1 is provided with two screw holes axisymmetrically; the jack 3 is arranged on the stop iron 2, one end of each screw rod 4 is connected with the stop iron 2, and the other end of each screw rod is connected with one screw hole of the puller 1. Two ends of the screw rod 4 respectively penetrate through screw holes on the stop iron 2 and the puller 1 and are screwed tightly through screw caps 5.

The belt detaching component may be a bearing 7 provided on the motor shaft, an end cover, a pair wheel, a fan, or the like.

When carrying out the dismantlement operation, the equipment novel bearing draws the horse, will draw 1 terminal surface of horse and the side end face that the spare part was kept away from jack 3 of waiting to disassemble offsets, and the ejecting axle of jack 3 offsets with motor shaft 6, drives the jack, and the spare part that will wait to disassemble is drawn from motor shaft 6 to draw by drawing horse 1. The puller 1 is an integrally formed structure with an axial symmetric shape, so that the structure is solid and firm, uniform in stress and relatively high in structural strength, parts on large electromechanical equipment can be easily disassembled, the contact surface of a motor shaft can be kept smooth, the shaft surface is not easy to damage, and the service life can be effectively prolonged.

In a specific embodiment, the avoidance slot is a U-shaped open slot. The design becomes U type open slot, can make novel bearing draw horse equipment back, need not the dismouting during the use, directly will draw the open slot card of horse 1 to motor shaft 6 on can.

The puller 1 is a rectangular plate, and the appearance is designed to be a rectangular structure.

Further, the puller 1 is provided with a groove used for clamping the part to be disassembled at the outer edge of the U-shaped open slot, so that the part can be positioned conveniently.

In order to ensure that the stress of the puller 1 is uniformly balanced in the using process, the circle center of the semicircle of the U-shaped open slot and the two screw holes are positioned on the same datum line, and meanwhile, the two screw rods 4 are symmetrically arranged on the stop iron 2 and are arranged in parallel. The semi-circle radius of the U-shaped open slot is larger or slightly larger than the radius of the motor shaft 6.

Specifically, the jack 3 is a hydraulic jack, a screw jack or a rack jack.

Preferably, the puller 1 adopts a steel plate with the thickness of 100mm +/-10 mm, so that the stress can be effectively improved, and deformation and scrapping caused by the over-limit stress during disassembly are prevented. If the pulling resistance is large, the pulling resistance can be matched with oxygen and acetylene to heat parts such as a bearing and the like to expand the parts for pulling.

The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (8)

1. A novel bearing puller is characterized by comprising a puller (1), a stop iron (2), a jack (3) and two screw rods (4), wherein,

the motor shaft (6) is sleeved with an avoidance groove formed in the puller (1), the puller (1) is of an integrally formed structure in an axially symmetric shape, and two screw holes are symmetrically formed in the puller (1) in an axially symmetric mode;

the jack (3) is arranged on the stop iron (2), and one end of each screw rod (4) is connected with the stop iron (2) and the other end of each screw rod is connected with one screw hole of the puller (1).

2. The new bearing puller according to claim 1, wherein said evasion groove is a U-shaped open groove.

3. The new bearing puller according to claim 2, characterized in that the puller (1) is a rectangular plate.

4. The novel bearing puller according to claim 2, characterized in that the puller (1) is provided with a groove at the outer edge of the U-shaped open slot for clamping parts to be disassembled.

5. The novel bearing puller according to claim 2, wherein the center of the semicircle of the U-shaped open slot and the two screw holes are located on the same datum line.

6. The new bearing puller according to claim 2, characterized in that the semicircular radius of the U-shaped open slot is larger than the radius of the motor shaft (6).

7. The new bearing puller according to claim 1, characterized in that said jack (3) is a hydraulic jack, a screw jack or a rack jack.

8. The new bearing puller according to any one of claims 1 to 7, characterized in that the puller (1) is a steel plate with a thickness of 100mm ± 10 mm.

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