CN211805896U

CN211805896U - Dismounting device for bearing of small motor

Info

Publication number: CN211805896U
Application number: CN201922261713.4U
Authority: CN
Inventors: 王连军; 王萌; 薄育民; 石涛
Original assignee: Lihuayi Lijin Refining and Chemical Co Ltd
Current assignee: Lihuayi Lijin Refining and Chemical Co Ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-10-30
Anticipated expiration: 2029-12-13

Abstract

The utility model discloses a bearing dismounting device for a small motor, which comprises a fixed sleeve, a mobile positioning device and a clamping device; the outer wall of the fixed sleeve is provided with a parallel lug and a vertical lug; the movable positioning device comprises a positioning rod, a bolt, a positioning knocking cap and a tension spring, wherein the positioning rod is connected with the parallel lugs, a positioning ring is arranged at the top of the positioning rod and is inserted into the bolt, the head of the bolt is connected with one end of the tension spring, the other end of the tension spring is connected with the positioning knocking cap, and the positioning knocking cap is suspended at the central position above the fixed sleeve through the tension springs at the left end and the right end; the clamping device comprises a clamping block and a push rod, the clamping block is arranged between the two vertical lugs, and the push rod penetrates through the vertical lugs to be connected with the clamping block. The utility model is suitable for a small-size motor bearing's dismantlement work, and only need alone operation, effectively practiced thrift the manpower, effectively reduced the danger of operation simultaneously.

Description

Dismounting device for bearing of small motor

Technical Field

The utility model relates to a mechanical tool technical field, concretely relates to small-size motor bearing dismounting device.

Background

In the industrial field, small motors are used very widely. The small motor bearing is of a double-sided sealing type, and an oil filling hole is not designed independently. When maintenance personnel maintain daily, discover the abnormal sound of the bearing of the small motor, and the mode of processing is to change the bearing. The bearing is changed to small-size motor and is compared with large-scale motor change bearing, implements the degree of difficulty and bigger some, because when small-size motor bearing was changed, need demolish the back with the end cover at motor both ends, take the rotor out, confine the size of small-size motor rotor to, do not have the instrument of adaptation when demolising the bearing. The conventional solutions are generally three, one of which is to use a small hydraulic puller for disassembly; the small hydraulic puller is only suitable for dismounting a motor bearing with larger power in a small motor, but has larger defects in implementation, because the rotor is drawn out, an operator needs to hold the rotor by hand when using the hydraulic puller, and holds a hydraulic puller pull rod at the same time, another person pushes the hydraulic rod to apply force to dismount the bearing, if the pull rod is not clamped well, the hydraulic puller is not in a horizontal state, the force is not uniformly applied to enable the pull rod to be separated, certain danger exists, the hydraulic pressure degree is larger when pushing the hydraulic rod, the rotor spindle is deformed, the rotor spindle can not be dismounted and used after being deformed, certain economic loss is caused, and most of small motors can not be used because the hydraulic puller claw can not be clamped into a gap between the bearing and the rotor. In conclusion, the small hydraulic puller is not suitable for disassembling the bearing of the small motor. The second type of the small-sized puller is a specially-made small-sized puller, the force application mode of the puller is that a screw thread pushes in force application, the small-sized motor rotor which is pulled out cannot be fixed, other tools are still needed to clamp the rotor or two persons are used for matching operation, an operator rotates with two hands to apply force, the pulling force is too small, uneven stress is easily applied, claw feet fall off, time and labor are wasted, and danger exists. The third is for strikeing the dismantlement with traditional instrument, and alone need the slope to hold the electric motor rotor during the operation, and another people holds the copper chisel and supports the bearing, strikes the chisel with the hammer simultaneously and throws out the bearing, and this kind of mode very easily causes rotor main shaft bending deformation and causes the rotor to damage and can't reuse because of the slope application of force, and just the operation just can be accomplished to the same needs two people cooperation, and the working process wastes time and energy and has certain danger simultaneously. At present, no better small motor bearing dismounting mode exists in the industry.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the shortcoming that prior art exists, provide a small-size motor bearing dismounting device.

In order to realize the purpose, the technical scheme of the utility model is that: the utility model provides a small motor bearing dismounting device which characterized in that: comprises a fixed sleeve, a mobile positioning device and a clamping device; the outer walls of the left side and the right side of the fixed sleeve are provided with parallel lugs, the outer walls of the front side and the rear side are provided with vertical lugs, the parallel lugs are of a tubular structure, a central hole is provided with internal threads, the central line of the parallel lugs is parallel to the central line of the fixed sleeve, the vertical lugs protrude out of the upper end surface of the fixed sleeve, the tops of the vertical lugs are provided with internal thread through holes, and the central line of the internal thread through holes is perpendicular to the central; the movable positioning device comprises two positioning rods, a bolt, two positioning knocking caps and a tension spring, wherein the two positioning rods are in threaded connection with two parallel lugs respectively; the clamping device comprises two clamping blocks and a push rod, the two clamping blocks are respectively arranged between the two vertical lugs, an internal thread groove is formed in one reverse side of each of the two clamping blocks, the push rod penetrates through the connecting groove behind the vertical lugs, and the push rod is in threaded connection with the vertical lugs and the grooves.

Further, the method comprises the following steps of; the bottom of the fixed sleeve is provided with a base.

Further, the method comprises the following steps of; and a rubber protective sleeve is arranged on the inner wall of the fixed sleeve.

Further, the method comprises the following steps of; and rubber layers are arranged on opposite sides of the two clamping blocks.

The utility model has the advantages that:

1) the utility model discloses simple structure, adjustable use is applicable to the dismantlement of small-size motor bearing.

2) The height of the positioning knocking cap can be adjusted by rotating the positioning rod, the position of the positioning knocking cap in the horizontal direction is adjusted by adjusting a bolt and a nut on the positioning ring, the positioning knocking cap can always position the position of the rotor spindle by matching with a tension spring and is sleeved in the rotor spindle, the vertical direction of the knocking position is guaranteed to be unchanged, and the spindle cannot be bent and deformed.

3) The clamping block can be accurately inserted into a gap between the bearing and the rotor, the whole rotor can be vertically clamped in the center of the fixed sleeve by matching with the push rod, and the whole dismounting force application process is axial vertical knocking force application, so that the rotor spindle is not damaged; during operation, only one person is needed to complete accurate operation, so that manpower is effectively saved, safety is higher, and operation danger is effectively reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the explosive splitting structure of the present invention;

FIG. 3 is a partial schematic view of the retaining sleeve;

fig. 4 is a usage state diagram of the present invention.

In the figure: 1. fixing the sleeve; 11. Parallel ears; 12. a vertical ear; 13. a base; 14. a rubber protective sleeve; 2. positioning a rod; 21. a positioning ring; 3. a bolt; 31. a nut; 4. positioning the knocking cap; 5. a tension spring; 6. a clamping block; 61. a rubber layer; 62. a groove; 7. a push rod; 8. a rotor; 9. a bearing; 10. a main shaft.

Detailed Description

Example (b):

as shown in fig. 1 to 4, a small motor bearing dismounting device comprises a fixed sleeve 1, a mobile positioning device and a clamping device; the utility model discloses a fixed sleeving, including fixed sleeving 1, left and right sides outer wall, parallel ear 11, perpendicular ear 12 is equipped with to the front and back both sides outer wall, parallel ear 11 is the tubular structure, and the centre bore is equipped with the internal thread, parallel ear 11 up end is equal with fixed sleeving 1 up end, parallel ear 11 central line is parallel with fixed sleeving 1 central line, perpendicular ear 12 outstanding fixed sleeving 1 up end, perpendicular ear 12 top is equipped with the internal thread through-hole, the internal thread through-hole central line is perpendicular with fixed sleeving 1 central line, fixed sleeving 1 inner wall is equipped with rubber protective sheath 14.

The movable positioning device comprises two positioning rods 2, bolts 3, positioning knocking caps 4 and tension springs 5, the two positioning rods 2 are in threaded connection with two parallel lugs 11 respectively, positioning rings 21 are arranged at the tops of the two positioning rods 2, the bolts 3 are inserted into the positioning rings 21 in an inserting mode, the bolts 3 are fixed through nuts 31, the heads of the bolts 3 are connected with one ends of the tension springs 5, the other ends of the tension springs 5 are connected with the positioning knocking caps 4, and the positioning knocking caps 4 are hung above the fixed sleeve 1 in a central position through the left and right tension springs 5 at the two ends.

Clamping device includes grip block 6 and push rod 7, grip block 6 is two, locates respectively between two perpendicular ears 12, grip block 6 is the cuboid structure, and its length is longer than the 1 internal diameter of fixed sleeve pipe, two grip block 6 subtend one side all is equipped with rubber layer 61, and reverse one side center all is equipped with female screw thread groove 62, push rod 7 passes perpendicular ear 12 back connecting groove 62, push rod 7 and perpendicular ear 12 and the equal threaded connection of recess 62.

When in specific use, the shaft extension end bearing of the 0.37KW three-phase asynchronous motor is taken as an example for disassembly. After the motor rotor 8 is pulled out by an operator, the operator holds the motor rotor 8, puts the extending end of the rotor shaft upwards into the cavity of the fixed sleeve 1, screws the push rod 7 out of the groove 62 of the clamping block 6, pushes the two clamping blocks 6 into the gap between the rotor 8 and the bearing 9, enables the two clamping blocks 6 to clamp the motor spindle 10 and support the bearing 9, and then connects the push rod 7 with the groove 62 through threads to fix the clamping blocks 6; the positioning knocking cap 4 is sleeved on the upper end face of the main shaft 10, at the moment, a single person uses a hammer to knock the positioning knocking cap 4 until the bearing 9 is taken off, the rotor 8 falls into the cavity of the large sleeve 2, and the rotor 8 cannot be scratched under the protection of the rubber protective sleeve 14.

The above-described embodiments are merely preferred and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Claims

1. The utility model provides a small motor bearing dismounting device which characterized in that: comprises a fixed sleeve, a mobile positioning device and a clamping device; the outer walls of the left side and the right side of the fixed sleeve are provided with parallel lugs, the outer walls of the front side and the rear side are provided with vertical lugs, the parallel lugs are of a tubular structure, a central hole is provided with internal threads, the central line of the parallel lugs is parallel to the central line of the fixed sleeve, the vertical lugs protrude out of the upper end surface of the fixed sleeve, the tops of the vertical lugs are provided with internal thread through holes, and the central line of the internal thread through holes is perpendicular to the central; the movable positioning device comprises two positioning rods, a bolt, two positioning knocking caps and a tension spring, wherein the two positioning rods are in threaded connection with two parallel lugs respectively; the clamping device comprises two clamping blocks and a push rod, the two clamping blocks are respectively arranged between the two vertical lugs, an internal thread groove is formed in one reverse side of each of the two clamping blocks, the push rod penetrates through the connecting groove behind the vertical lugs, and the push rod is in threaded connection with the vertical lugs and the grooves.

2. A small-sized motor bearing detaching device according to claim 1, wherein: the bottom of the fixed sleeve is provided with a base.

3. A small-sized motor bearing detaching device according to claim 1, wherein: and a rubber protective sleeve is arranged on the inner wall of the fixed sleeve.

4. A small-sized motor bearing detaching device according to claim 1, wherein: and rubber layers are arranged on opposite sides of the two clamping blocks.