CN214755986U

CN214755986U - A remove device for motor rotor changes bearing

Info

Publication number: CN214755986U
Application number: CN202121073035.XU
Authority: CN
Inventors: 宫国强; 滕裕国; 武春久; 乔振宁; 兰卫中; 刘永明
Original assignee: Baotou Tiangong Motor Co ltd
Current assignee: Baotou Tiangong Motor Co ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-11-16
Anticipated expiration: 2031-05-19

Abstract

The utility model discloses a remove device for electric motor rotor changes bearing, including electric motor rotor, riser, pull rod assembly, electric motor rotor's right side output is equipped with the motor shaft of coaxial hookup, and the cover is equipped with the bearing on motor shaft's the left end portion, and motor shaft's right flank is equipped with the vertical riser of placing, and fixing hole has been seted up at the middle part of riser, is equipped with the jack in the fixing hole, and the left surface of riser is equipped with the semicircular bearing pull ring that a pair of symmetry was placed, is equipped with pull rod assembly on a pair of semicircular bearing pull ring. The utility model has the advantages of simple whole structure, the semicircle bearing pull ring can not drop in the use, the bearing of different models as long as change different semicircle bearing pull rings can, easy operation, labour saving and time saving has solved because the space is not enough when the bearing is changed, takes out the problem of difficulty.

Description

A remove device for motor rotor changes bearing

Technical Field

The utility model relates to an electrical equipment technical field especially relates to a remove device that is used for electric motor rotor to change bearing.

Background

The bearing is a common part of the motor, and the fixation of the bearing is obtained by interference fit of an inner ring of the bearing and a shaft. In the mounting and using process, the inner ring of the bearing is allowed to bear force, and the outer ring and the rolling body are not allowed to bear impact force; the condition of bearing replacement often appears in the production process, because the structural feature of motor rotor, hydraulic bearing extracting tool and ordinary mechanical bearing extracting tool commonly used can't guarantee to keep original precision after the bearing is dismantled, only can do the scrapping processing.

The existing replacement bearing device has the following defects: 1. after the traditional motor rotor bearing is installed, a bearing taking-out tool suitable for replacement is used for completing the replacement, but when a high-power motor is used and the inner end of the bearing is almost free of a gap, the bearing is difficult to take down, and the bearing cannot be buckled by the ordinary bearing taking-out tool, so that the bearing can slip off by force; 2. the diameter of the bearings of different models is different, and different taking-out tools are needed, so that the replacement steps are complicated, and the work of taking out the bearings is difficult to effectively finish.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a taking-out device for replacing a bearing of a motor rotor.

In order to solve the problems existing in the prior art, the utility model adopts the following technical scheme:

the utility model provides a remove device for electric motor rotor changes bearing, includes electric motor rotor, riser, pull rod assembly, electric motor rotor's right side output is equipped with the motor shaft of coaxial hookup, the cover is equipped with the bearing on the left end portion of motor shaft, motor shaft's right flank is equipped with the vertical riser of placing, fixing hole has been seted up at the middle part of riser, be equipped with the jack in the fixing hole, the left surface of riser is equipped with the semicircle bearing pull ring that a pair of symmetry was placed, and is a pair of be equipped with pull rod assembly on the semicircle bearing pull ring.

Preferably, the middle part of the outer side surface of the jack is sleeved with an external thread sleeve which is concentrically and fixedly connected, a thread groove is formed in the fixing through hole, and the external thread sleeve is spirally connected with the thread groove.

Preferably, the output end of the left side surface of the jack is provided with a jack central shaft which is coaxially connected, and the middle part of the left side surface of the jack central shaft is abutted against the middle part of the right side surface of the motor rotating shaft.

Preferably, a pair of oval through holes are formed in the vertical plate and located on the upper side and the lower side of the fixing through hole, each thread inner cylinder is arranged in the middle of the right side face of the semicircular bearing pull ring, and each thread inner cylinder is clamped in the corresponding oval through hole in a sliding mode.

Preferably, the depth of the oval through hole is greater than the length of the thread inner cylinder, a T-shaped bolt in threaded connection is inserted into the outer port of the thread inner cylinder, and the T-shaped bolt abuts against the right side face of the vertical plate.

Preferably, a positioning gap is reserved between the bearing and the motor rotor, each semicircular groove steel ring which is concentrically and fixedly connected with the left end opening in the semicircular bearing pull ring is arranged at the left end opening in the semicircular bearing pull ring, the thickness of each semicircular groove steel ring is smaller than the positioning gap, and the semicircular groove steel rings are tightly clamped in the positioning gap.

Preferably, the pull rod assembly comprises a pull rod, a pair of limiting plates which are longitudinally arranged are arranged on the upper side and the lower side of each pair of semicircular bearing pull rings, the middle part of each limiting plate is tightly abutted against the outer side of the corresponding semicircular bearing pull ring, and a pair of limiting holes are formed in the two ends of each limiting plate; every a pair of vertical pull rod hole that runs through all seted up on the semicircle bearing pull ring, both sides are equipped with a pair of vertical pull rod of placing between a pair of semicircle bearing pull ring around being located the bearing, every the outer end of pull rod all slides in proper order and runs through corresponding pull rod hole, spacing hole.

Preferably, the outer end of the pull rod is sleeved with fastening nuts in threaded connection, and each fastening nut abuts against the outer side of the limiting plate.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the utility model, according to the diameter of the bearing, a pair of semicircular bearing pull rings with proper size are selected, the pair of semicircular bearing pull rings are installed on the vertical plate, the thread inner barrel is clamped in the corresponding elliptical through hole and slides up and down to adjust the position, and the T-shaped bolt is tightly propped against the right side surface of the vertical plate through the T-shaped bolt matching and the thread inner barrel is locked in a screw mode, so that the stability of installing the semicircular bearing pull rings on the vertical plate is improved;

2. in the utility model, the middle parts of the two limiting plates are all abutted on the outer sides of the corresponding semicircular bearing pull rings, and the corresponding fastening nuts are screwed up respectively, so that the fastening nuts are all abutted on the outer sides of the limiting plates, and further the limiting plates are driven to move inwards, the left port of the semicircular bearing pull ring is driven to be abutted on the bearing, the semicircular groove steel ring is all abutted and clamped in the positioning gap, the jack is shaken to pressurize, the central shaft of the jack is ejected out, and under the action of the jacking force, the driving shaft is driven to slowly move rightwards along the motor rotating shaft until the bearing is taken out, so that the bearing is convenient to take out;

to sum up, the utility model has the advantages that the whole structure is simple, and the half round bearing pull ring can not drop in the use, and the bearing of different models only need to be changed different half round bearing pull rings can, easy operation, labour saving and time saving has solved because the space is not enough when the bearing is changed, takes out the problem of difficulty.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a schematic right-side sectional view of the present invention;

FIG. 3 is a right side view of the riser of the present invention;

FIG. 4 is a right side view of a pair of semi-circular bearing pull rings of the present invention;

number in the figure: the motor rotor comprises a motor rotor 1, a semicircular bearing pull ring 2, a bearing 3, a pull rod 4, a limiting plate 5, a motor rotating shaft 6, a jack central shaft 7, a vertical plate 9, a jack 8, a vertical plate 9, a T-shaped bolt 10, a semicircular groove steel ring 11, a fastening nut 12, an external thread sleeve 13, a thread groove 14, an oval through hole 15 and a thread inner cylinder 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example 1: the embodiment provides a remove device for electric motor rotor changes bearing, refer to fig. 1-4, it is concrete, including electric motor rotor 1, riser 9, pull rod assembly, electric motor rotor 1's right side output is equipped with motor shaft 6 of coaxial hookup, the cover is equipped with bearing 3 on motor shaft 6's the left end portion, motor shaft 6's right flank is equipped with vertical riser 9 of placing, fixing hole has been seted up at riser 9's middle part, be equipped with jack 8 in the fixing hole, riser 9's left surface is equipped with a pair of semi-circular bearing pull ring 2 of placing of symmetry, be equipped with pull rod assembly on a pair of semi-circular bearing pull ring 2.

In the utility model, the middle part of the outer side surface of the jack 8 is sleeved with an external thread sleeve 13 which is concentrically and fixedly connected, a thread groove 14 is arranged in the fixed through hole, and the external thread sleeve 13 is spirally connected with the thread groove 14; the output end of the left side surface of the jack 8 is provided with a jack central shaft 7 which is coaxially connected, and the middle part of the left side surface of the jack central shaft 7 is tightly propped against the middle part of the right side surface of the motor rotating shaft 6; and an external thread sleeve 13 in the middle of the jack 8 is inserted into the fixed through hole and is matched with the thread groove 14 for screw connection, so that the middle of the left side surface of the jack central shaft 7 is abutted against the middle of the right side surface of the motor rotating shaft 6.

In the utility model, a positioning gap is reserved between the bearing 3 and the motor rotor 1, a left port in each semicircular bearing pull ring 2 is provided with a semicircular steel ring 11 which is concentrically and fixedly connected, the thickness of each semicircular steel ring 11 is smaller than the positioning gap, and the two semicircular steel rings 11 are tightly abutted and clamped in the positioning gap; a pair of semicircle bearing pull rings 2 is sleeved on the motor rotating shaft 6, so that the semicircle trough steel ring 11 is tightly clamped in the positioning gap.

In the utility model, the pull rod assembly comprises a pull rod 4, a pair of limiting plates 5 which are longitudinally arranged are arranged on the upper and lower sides of a pair of semicircular bearing pull rings 2, the middle part of each limiting plate 5 is tightly propped against the outer side of the corresponding semicircular bearing pull ring 2, and a pair of limiting holes are arranged at the two ends of each limiting plate 5; each semicircular bearing pull ring 2 is provided with a pair of vertically-through pull rod holes, a pair of vertically-placed pull rods 4 are arranged between the pair of semicircular bearing pull rings 2 and positioned at the front side and the rear side of the bearing 3, and the outer end of each pull rod 4 sequentially penetrates through the corresponding pull rod hole and the corresponding limiting hole in a sliding manner; the outer end parts of the pull rods 4 are respectively sleeved with fastening nuts 12 which are in threaded connection, and each fastening nut 12 is tightly propped against the outer side of the limiting plate 5; the middle parts of the two limiting plates 5 are all abutted on the outer sides of the corresponding semicircular bearing pull rings 2, and the corresponding fastening nuts 12 are screwed respectively, so that the fastening nuts 12 are all abutted on the outer sides of the limiting plates 5, and further the limiting plates 5 are driven to move inwards, and the left end openings of the semicircular bearing pull rings 2 are driven to abut on the bearings 3.

Example 2: in embodiment 1, there is also a problem that the replacement of the pair of semicircular bearing pull rings is inconvenient, and therefore, this embodiment further includes, on the basis of embodiment 1:

in the utility model, a pair of oval through holes 15 are arranged on the vertical plate 9 at the upper and lower sides of the fixed through hole, the middle part of the right side surface of each semicircular bearing pull ring 2 is provided with a thread inner cylinder 16, and each thread inner cylinder 16 is slidably clamped in the corresponding oval through hole 15; the depth of the oval through hole 15 is larger than the length of the thread inner cylinder 16, a T-shaped bolt 10 in spiral connection is inserted in the outer port of the thread inner cylinder 16, and the T-shaped bolt 10 is tightly propped against the right side surface of the vertical plate 9; according to the diameter size of bearing 3, select a pair of semicircular bearing pull ring 2 of suitable size, install a pair of semicircular bearing pull ring 2 on riser 9, screw thread inner tube 16 block is in the oval through-hole 15 that corresponds and slide adjusting position from top to bottom, through T shape bolt 10 cooperation and 16 spiral locks of screw thread inner tube for T shape bolt 10 supports tightly on the right flank of riser 9, has increased the stability that semicircular bearing pull ring 2 installed on riser 9.

Example 3: the utility model discloses when specifically using, its operating procedure is as follows:

firstly, selecting a pair of semicircular bearing pull rings 2 with proper sizes according to the diameter of a bearing 3, installing the pair of semicircular bearing pull rings 2 on a vertical plate 9, clamping a thread inner cylinder 16 in a corresponding elliptical through hole 15, sliding the thread inner cylinder up and down to adjust the position, and matching a T-shaped bolt 10 to be in screw locking with the thread inner cylinder 16, so that the T-shaped bolt 10 is tightly abutted against the right side surface of the vertical plate 9, and the stability of installing the semicircular bearing pull rings 2 on the vertical plate 9 is improved;

step two, the pair of semicircular bearing pull rings 2 are sleeved on the motor rotating shaft 6, so that the semicircular steel ring 11 is tightly abutted and clamped in the positioning gap; an external thread sleeve 13 in the middle of the jack 8 is inserted into the fixed through hole and is matched with the thread groove 14 for spiral connection, so that the middle of the left side surface of the jack central shaft 7 is tightly propped against the middle of the right side surface of the motor rotating shaft 6;

thirdly, the middle parts of the two limiting plates 5 are abutted against the outer sides of the corresponding semicircular bearing pull rings 2, and the corresponding fastening nuts 12 are respectively screwed tightly, so that the fastening nuts 12 are abutted against the outer sides of the limiting plates 5, and further, the pair of limiting plates 5 are driven to move inwards, and the left end openings of the semicircular bearing pull rings 2 are driven to abut against the bearings 3;

and fourthly, shaking the jack 8 to pressurize so as to eject the jack central shaft 7, and driving the shaft 3 to slowly move rightwards along the motor rotating shaft 6 under the action of the jacking force until the bearing 3 is taken out, so that the bearing 3 is conveniently taken out.

The utility model has the advantages of simple whole structure, the semicircle bearing pull ring can not drop in the use, the bearing of different models as long as change different semicircle bearing pull rings can, easy operation, labour saving and time saving has solved because the space is not enough when the bearing is changed, takes out the problem of difficulty.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a remove device for electric motor rotor changes bearing, includes electric motor rotor (1), riser (9), draw bar assembly, its characterized in that: the right side output of motor rotor (1) is equipped with motor shaft (6) of coaxial hookup, the cover is equipped with bearing (3) on the left end portion of motor shaft (6), the right flank of motor shaft (6) is equipped with vertical riser (9) of placing, fixing hole has been seted up at the middle part of riser (9), be equipped with jack (8) in the fixing hole, the left surface of riser (9) is equipped with semicircular bearing pull ring (2) that a pair of symmetry was placed, and is a pair of be equipped with the pull rod subassembly on semicircular bearing pull ring (2).

2. A removal device for bearing replacement of an electric motor rotor according to claim 1, characterized in that: the jack is characterized in that an external thread sleeve (13) which is concentrically and fixedly connected is sleeved in the middle of the outer side face of the jack (8), a thread groove (14) is formed in the fixing through hole, and the external thread sleeve (13) is in threaded connection with the thread groove (14).

3. A removal device for bearing replacement of an electric motor rotor according to claim 1, characterized in that: the output end of the left side surface of the jack (8) is provided with a jack central shaft (7) which is coaxially connected, and the middle part of the left side surface of the jack central shaft (7) is tightly propped against the middle part of the right side surface of the motor rotating shaft (6).

4. A removal device for bearing replacement of an electric motor rotor according to claim 1, characterized in that: a pair of oval through holes (15) are formed in the vertical plate (9) on the upper side and the lower side of each fixing through hole, each thread inner cylinder (16) is arranged in the middle of the right side face of each semicircular bearing pull ring (2), and each thread inner cylinder (16) is clamped in the corresponding oval through hole (15) in a sliding mode.

5. The extraction device for replacing a bearing of a rotor of an electric machine according to claim 4, wherein: the depth of the oval through hole (15) is larger than the length of the thread inner cylinder (16), a T-shaped bolt (10) in threaded connection is inserted into the outer port of the thread inner cylinder (16), and the T-shaped bolt (10) abuts against the right side face of the vertical plate (9).

6. A removal device for bearing replacement of an electric motor rotor according to claim 1, characterized in that: a positioning gap is reserved between the bearing (3) and the motor rotor (1), every semicircular steel ring (11) which is concentrically and fixedly connected with the left end opening in the semicircular bearing pull ring (2) is arranged, every semicircular steel ring (11) is smaller than the positioning gap in thickness, and every semicircular steel ring (11) is tightly abutted to the positioning gap in a clamping mode.

7. A removal device for bearing replacement of an electric motor rotor according to claim 1, characterized in that: the pull rod assembly comprises a pull rod (4), a pair of limiting plates (5) which are longitudinally arranged are arranged on the upper side and the lower side of each pair of semicircular bearing pull rings (2), the middle part of each limiting plate (5) is tightly abutted against the outer side of the corresponding semicircular bearing pull ring (2), and a pair of limiting holes are formed in the two ends of each limiting plate (5); every a pair of vertical pull rod hole that runs through all has been seted up on half round bearing pull ring (2), both sides are equipped with a pair of vertical pull rod (4) of placing between a pair of half round bearing pull ring (2) around being located bearing (3), every the outer end of pull rod (4) all slides in proper order and runs through corresponding pull rod hole, spacing hole.

8. The extraction device for replacing a bearing of a rotor of an electric machine according to claim 7, wherein: the outer end of the pull rod (4) is sleeved with fastening nuts (12) which are in threaded connection, and each fastening nut (12) abuts against the outer side of the limiting plate (5).