CN216422421U

CN216422421U - Stator dismounting device

Info

Publication number: CN216422421U
Application number: CN202122946427.9U
Authority: CN
Inventors: 林朝文
Original assignee: Fujian Everstrong Lega Power Equipments Co Ltd
Current assignee: Fujian Everstrong Lega Power Equipments Co Ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-05-03
Anticipated expiration: 2031-11-29

Abstract

The utility model provides a stator dismounting device, include: the two clamping jaws comprise a jaw arm and a jaw head which are fixed together; the claw arm is provided with an inclined plane, a groove and a step surface; the tool body is provided with a thread section, a claw arm mounting section and a positioning section from front to back, and a step through hole is formed in the center; the round nut is provided with a large-diameter section and a small-diameter section, and a second threaded hole is formed in the center of the round nut; the screw rod penetrates through the stepped through hole and is in threaded connection with the first threaded hole; the small-diameter section is embedded into the inner ring of the second bearing; the outer ring of the second bearing is abutted against the two inclined planes; and the rubber band is tightly sleeved in the two grooves. The two clamping jaws are opened or closed by rotating the round nut, so that the stator is loosened or clamped, the screw abuts against the second bolt, and the stator is disassembled by rotating the screw. The utility model discloses simple structure, easy operation is convenient, low in labor strength, efficient, and do not influence advantages such as product quality.

Description

Stator dismounting device

Technical Field

The utility model relates to a production and maintenance technical field of generator, especially a stator dismounting device.

Background

The generator set is connected with power by a generator, so that mechanical energy is converted into electric energy for the use of the power supply device, wherein the power can be a diesel engine or a gasoline engine.

As shown in fig. 1, the power section 300 connected to the generator includes a power side cover 301 and a crankshaft output end 302, the power side cover 301 has an external convex round spigot 3012, a flat surface 3011 and a first screw hole 3013, and the crankshaft output end 302 has an external taper section 3021 and a second screw hole 3022.

As shown in fig. 2, the generator 200 is mainly composed of a front end cover 201, a rear end cover 202, a stator 203, a rotor 204, a first bolt 205, a second bolt 206, a third bolt 207, and the like; the stator 203 comprises a stator core 2031 and a stator coil 2032, the rotor 204 comprises a rotor core 2041, a rotor coil 2042, a rotating shaft 2043, a first bearing 2044 and a fan blade 2045, and the rotor core 2041, the first bearing 2044 and the fan blade 2045 are all fixed on the rotating shaft 2043; the front end cover 201 is provided with a first inner circular spigot 2011 matched with the stator core 2031, and a circular through hole 2012 matched with the outer convex circular spigot 3012 of the power side cover 301, a front end surface 2013 and a first bolt avoiding hole 2014, and the first bolt 205 penetrates through the first bolt avoiding hole 2014 and is locked into the first screw hole 3013, so that the front end cover 201 is fixedly connected to the power side cover 301; the rotating shaft 2043 is a hollow shaft, the inner through hole thereof includes a tapered hole 20431 at the front section part and a second bolt avoiding hole 20432 at the rear section part, the tapered hole 20431 is matched with the outer tapered section 3021 of the crankshaft output end 302, and the second bolt 206 passes through the second bolt avoiding hole 20432 and is locked into the second screw hole 3022, so that the rotor 204 is fixedly connected to the crankshaft output end 302; the rear end cover 202 has a second inner circular spigot 2021 matched with the stator core 2031, a first bearing chamber 2022 matched with the outer ring of the first bearing 2044, a first avoidance hole 2023 and a peripheral rear end face 2024; the stator 203 is sleeved on the periphery of the rotor 204, two ends of a stator core 2031 of the stator 203 are respectively inserted into the first inner circular seam allowance 2011 of the front end cover 201 and the second inner circular seam allowance 2021 of the rear end cover 202, meanwhile, the first bearing is arranged in the first bearing chamber 2022, the stator, the front end cover and the rear end cover are fixed together through the front end cover and the rear end cover by a third bolt 207, and a gap is reserved between the stator and the rotor.

Because the first inner circular seam allowance 2011 of the front end cover 201, the second inner circular seam allowance 2021 of the rear end cover 202 and the stator core 2031 are matched in a full circular structure, no gap exists between the first inner circular seam allowance 2011 and the second inner circular seam allowance 2021; therefore, when production, experiment or maintenance, if it is great to tear the stator degree of difficulty out to need, when loosening behind the third bolt 207, it is unable to handle by bare-handed stator core 2031 extracts from the first interior round-nose 2011 of front end cover 201, and the peripheral surface that only can constantly beat stator core 2031 with the hammer produces vibrations and deviates from, not only wastes time and energy, and intensity of labour is high, inefficiency, and influences product quality even.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in providing a stator dismounting device, simple structure, and easy operation is convenient, low in labor strength, efficient, and do not influence advantages such as product quality.

The utility model discloses a realize like this: a stator dismounting device comprising:

the two clamping jaws comprise a jaw arm and a jaw head which are fixed together; the claw arm is provided with an inclined plane, a groove and a step surface;

the tool body is provided with a thread section, a claw arm mounting section and a positioning section from front to back, and a step through hole is formed in the center; the big hole of the step through hole is a second avoidance hole, and the small hole of the step through hole is a first threaded hole;

the round nut is provided with a large-diameter section and a small-diameter section, and a second threaded hole is formed in the center of the round nut; the second threaded hole and the threaded section are in threaded connection;

the screw rod penetrates through the stepped through hole and is in threaded connection with the first threaded hole;

the small-diameter section is embedded into the inner ring of the second bearing and is in tight fit with the inner ring; the outer ring of the second bearing is abutted against the two inclined planes;

at least one rubber band, wherein the rubber band is tightly sleeved in the two grooves;

wherein the clamping jaw comprises the following two states:

a first state: the round nut rotates, the round nut moves along the axial direction of the screw rod, the outer ring of the second bearing extrudes the two claw arms, the two claw arms rotate synchronously to be closed, and the rubber band is spread;

and a second state: the circular nut rotates in the direction opposite to the first state, the circular nut moves along the axial direction of the screw rod and is opposite to the first state in movement direction, the two claw arms are loosened on the outer ring of the second bearing, and the rubber band tightens and tightens the two claw arms to rotate synchronously and expand.

Furthermore, the device also comprises two screws and two nuts;

the claw arm is also provided with a through hole; the through holes and the screws are in clearance fit;

the left side and the right side of the claw arm mounting section are respectively provided with an extending part outwards, and each extending part is provided with a longitudinal through hole and a transverse through groove which are communicated with each other; the width of the transverse through groove is in clearance fit with the thickness of the claw arm;

the through hole ends of the claw arms are inserted into the transverse through grooves, the screws penetrate through the longitudinal through holes and the through holes in a one-to-one correspondence mode and are locked with the nuts, and the two claw heads are arranged oppositely.

Furthermore, two chamfers are arranged at the end parts of the through hole ends of the claw arms.

Further, when the clamping jaw is in the first state, the clamping jaw is synchronously rotated and closed to a first preset position along with the two clamping jaw arms, wherein a chamfer far away from the round nut abuts against the bottom of the transverse through groove;

when the clamping jaw is in the second state, the clamping jaw is synchronously rotated and opened to a second preset position along with the two clamping jaw arms, and the other chamfer angle close to the round nut abuts against the bottom of the transverse through groove.

Furthermore, the claw head is provided with an arc surface, and the size of the arc surface radius of the arc surface is less than or equal to the excircle radius of the stator core.

Furthermore, the round nut is also provided with a handle.

Furthermore, a hexagonal section is arranged at one end of the screw rod along the axial direction;

the other end of the screw rod is also sequentially provided with a cylindrical section and a conical section along the axial direction outwards.

The utility model has the advantages of as follows: a stator dismounting device comprising: the two clamping jaws comprise a jaw arm and a jaw head which are fixed together; the claw arm is provided with an inclined plane, a groove and a step surface; the tool body is provided with a thread section, a claw arm mounting section and a positioning section from front to back, a step through hole is formed in the center, and a small hole of the tool body is a first threaded hole; the round nut is provided with a large-diameter section and a small-diameter section, and a second threaded hole is formed in the center of the round nut; the screw rod penetrates through the stepped through hole and is in threaded connection with the first threaded hole; the small-diameter section is embedded into the inner ring of the second bearing; the outer ring of the second bearing is abutted against the two inclined planes; and the rubber band is tightly sleeved in the two grooves. The two clamping jaws are opened or closed by rotating the round nut, so that the stator is loosened or clamped, the screw abuts against the second bolt, and the stator is disassembled by rotating the screw. The utility model discloses simple structure, easy operation is convenient, low in labor strength, efficient, and do not influence advantages such as product quality.

Drawings

The invention will be further described with reference to the following examples with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of a power connection portion of the related art.

Fig. 2 is a schematic diagram of a generator structure and power connection in the prior art.

Fig. 3 is a front view of the stator dismounting device of the present invention.

Fig. 4 is a rear view schematic diagram of the stator dismounting device of the present invention.

Fig. 5 is a schematic structural view of the two jaws of the present invention.

Fig. 6 is a front view schematically illustrating the tool body according to the present invention.

Fig. 7 is a rear view schematic diagram of the tool body of the present invention.

Fig. 8 is a schematic structural view of the round nut of the present invention.

Fig. 9 is a schematic structural view of the screw of the present invention.

Fig. 10 is a schematic view illustrating a use state of the stator detaching device according to the present invention.

Fig. 11 is a schematic view of a second usage state of the stator detaching device according to the present invention.

Description of reference numerals:

the power part 300, a power side cover 301, an outer convex round spigot 3012, a plane 3011, a first screw hole 3013, a crankshaft output end 302, an outer taper section 3021 and a second screw hole 3022;

the stator comprises a generator 200, a front end cover 201, a first inner circular spigot 2011, a circular through hole 2012, a front end face 2013, a first bolt avoiding hole 2014, a rear end cover 202, a second inner circular spigot 2021, a first bearing chamber 2022, a first avoiding hole 2023, a peripheral rear end face 2024, a stator 203, a stator core 2031, a stator coil 2032, a rotor 204, a rotor core 2041, a rotor coil 2042, a rotating shaft 2043, a taper hole 20431, a second bolt avoiding hole 20432, a first bearing 2044, a fan blade 2045, a first bolt 205, a second bolt 206 and a third bolt 207.

The utility model discloses:

the clamping jaw comprises a clamping jaw 1, a jaw arm 11, a through hole 111, a chamfer 112, a slope 113, a groove 114, a step surface 115, a jaw head 12 and an arc surface 121;

the tool comprises a tool body 2, a thread section 21, a claw arm mounting section 22, a longitudinal through hole 221, a transverse through groove 222, a groove bottom 2221, a positioning section 23, a step through hole 24, a second avoidance hole 241 and a first threaded hole 242;

the round nut 3, the large-diameter section 31, the small-diameter section 32, the second threaded hole 33 and the handle 34;

a screw 4, a hexagonal section 41, a cylindrical section 42, and a conical section 43;

a second bearing 5;

a screw 6;

a nut 7;

and a rubber band 8.

Detailed Description

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

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed", "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the utility model can be understood in specific cases to those of ordinary skill in the art.

The utility model discloses a design as follows:

the two clamping jaws 1 are opened or closed by rotating the round nut 3, so that the stator is loosened or clamped, the screw rod 4 abuts against the second bolt 206, and the stator is ejected and disassembled by rotating the screw rod 4. The utility model discloses simple structure, easy operation is convenient, low in labor strength, efficient, and do not influence advantages such as product quality.

Please refer to fig. 1 to 11.

Example (b):

a stator dismounting device comprising:

the two clamping jaws 1 comprise a jaw arm 11 and a jaw head 12 which are fixed together; the claw arm 11 is provided with an inclined plane 113, a groove 114 and a step surface 115; during operation, the step surface 115 abuts against the peripheral rear end surface 2024 of the rear end cover 202, so that the stator dismounting device is in a more stable state during operation and is convenient to operate.

The tool body 2 is provided with a threaded section 21, a claw arm mounting section 22 and a positioning section 23 from front to back, and a step through hole 24 is formed in the center; the big hole of the stepped through hole 24 is a second avoidance hole 241, and the small hole is a first threaded hole 242; the positioning section 23 is inserted into the first avoiding hole 2023 of the rear end cover 202 during operation, so as to perform a centering and positioning function.

The round nut 3 is provided with a large-diameter section 31 and a small-diameter section 32, and a second threaded hole 33 is formed in the center; the second threaded hole 33 and the threaded section 21 are screwed together;

a screw rod 4 passing through the stepped through hole 24 and screwed into the first threaded hole 242;

the small-diameter section 32 is embedded into the inner ring of the second bearing 5 and is in tight fit with the inner ring; the outer ring of the second bearing 5 abuts against the two inclined planes 113; in a specific implementation, the outer ring of the second bearing 5 is provided with a circular arc chamfer; by utilizing the contact between the arc chamfer surface at the edge of the outer ring of the second bearing 5 and the inclined surface 113 of the claw arm 11, the design is that when the round nut 3 is rotated, the outer ring of the second bearing 5 does not rotate and only moves back and forth, so that the inclined surface 113 has no friction force in the circumferential direction, and the work of rotating the round nut to clamp the iron core is easier and more labor-saving.

And the rubber band 8 is tightly sleeved in the two grooves 114, so that the two clamping jaws 1 have the function of automatically opening. The number of the rubber bands 8 can be selected according to the elasticity of the rubber bands 8, and in the concrete implementation, the number of the rubber bands can be debugged in advance before use, so that the number of the rubber bands is selected and debugged to be in a better state, the two clamping jaws 1 are opened automatically, and meanwhile, the clamping is convenient to rotate and clamp.

Wherein the jaw 1 comprises the following two states:

the first state: the round nut 3 rotates, the round nut 3 moves along the axial direction of the screw rod 4, the outer ring of the second bearing 5 extrudes the two claw arms 11, the two claw arms 11 synchronously rotate and close, and the rubber band 8 is unfolded;

and a second state: the round nut 3 rotates in the direction opposite to the first state, the round nut 3 moves along the axial direction of the screw rod 4 and moves in the direction opposite to the first state, the two claw arms 11 are loosened on the outer ring of the second bearing 5, the rubber band 8 contracts and tightens the two claw arms 11 to rotate synchronously and open, and the function of automatic opening is achieved. The rotating direction of the round nut 3 can be preset, and when the round nut rotates clockwise, the two corresponding claw arms 11 rotate to be closed; when the claw arms are rotated counterclockwise, the corresponding claw arms 11 are rotated and opened.

The device also comprises two screws 6 and two nuts 7;

the claw arm 11 is further provided with a through hole 111; the through hole 111 and the screw 6 are in clearance fit, so that the claw arm 11 can rotate around the screw 6 in the transverse through groove 222, and the two clamping jaws 1 have the functions of opening and closing.

The left side and the right side of the claw arm mounting section 22 are respectively provided with an extending part outwards, and each extending part is provided with a longitudinal through hole 221 and a transverse through groove 222 which are communicated with each other; the width of the transverse through slot 222 is in clearance fit with the thickness of the claw arm 11;

the through hole ends of the claw arms 11 are inserted into the transverse through grooves 222, the screws 6 correspondingly penetrate through the longitudinal through holes 221 and the through holes 111 one by one to be locked with the nuts 7, and the two claw heads 12 are oppositely arranged.

The end of the through-hole end of the claw arm 11 is also provided with two chamfers 112.

In specific implementation, the opening and closing degrees of the two clamping jaws 1 are preset according to working requirements during design. For example, by the size of the two chamfers 112 of the claw arm 11.

When the clamping jaw 1 is in the first state, the clamping jaw is synchronously rotated and closed to a preset position I along with the two clamping jaw arms 11, wherein a chamfer 112 far away from the round nut 3 abuts against the groove bottom 2221 of the transverse through groove 222; the closed extreme positions correspond to the extreme positions in which the two clamping jaws 1 do not close too little after the stator dismounting device has been removed from the generator.

When the clamping jaw 1 is in the second state, the two clamping jaw arms 11 are opened to the second preset position along with the synchronous rotation of the two clamping jaw arms, wherein the other chamfer near the round nut 3 abuts against the groove bottom 2221 of the transverse through groove 222. And the corresponding open limit position ensures that when the stator of the generator is clamped, the two clamping jaws 1 do not need to be opened too much, so that the idle work consumption is reduced when the stator is closed and clamped subsequently.

The claw head 12 is provided with an arc surface 121, the size of the arc surface radius of the arc surface 121 is smaller than or equal to the outer circle radius of the stator core 2031, and the design is favorable for clamping the stator core 2031 by two claw heads.

The round nut 3 is also provided with a handle 34, so that the round nut 3 can be conveniently rotated and operated.

One end of the screw rod 4 is provided with a hexagonal section 41 outwards along the axial direction;

the other end of the screw rod 4 is also provided with a cylindrical section 42 and a conical section 43 in sequence along the axial direction outwards.

When the stator dismounting device of the present invention is applied to work, please refer to fig. 2, fig. 3, fig. 10 and fig. 11, and the operation steps are as follows:

(1) the third bolt 207 of the generator is loosened.

(2) And rotating the handle 34 in the counterclockwise direction to enable the second bearing 5 to move backwards along with the round nut 3, and simultaneously, the two clamping jaws 1 are opened outwards under the action of the rubber band 8 until the chamfers 112 of the jaw arms 11 abut against the groove bottom 2221 of the transverse through groove 222 of the tool body 2.

(3) The claw head 12 is placed on the outer side of the generator stator core 2031, the positioning section 23 of the tool body 2 is inserted into the first avoiding hole 2023 of the generator rear end cover 202, the step surface 115 of the claw arm 11 abuts against the peripheral rear end surface 2024 of the rear end cover 202, and then the handle 34 is rotated clockwise, so that the second bearing 5 moves forward along with the round nut 3, and slides forward by abutting against the inclined surface 113 through the outer ring edge of the second bearing 5, so that the two clamping jaws 1 are forced to be closed, and the stator core 2031 is clamped tightly.

(4) The inner hexagonal socket wrench, manual, pneumatic or electric socket wrench may be used to sleeve the hexagonal section 41 of the screw rod 4, rotate clockwise to make the top of the conical section 43 of the screw rod 4 abut against the top surface 2061 of the head of the second bolt 206, and then rotate the socket wrench continuously, the screw rod 4 continues to move axially, so that the stator core 2031 can be ejected out easily and quickly, and is separated from the first inner round-end 2011 of the front end cover 201, and the first bearing 2044 is separated from the first bearing chamber 2022 of the rear end cover 202. And then, rotating the handle 32 in the counterclockwise direction to open the two clamping jaws 1 outwards, and then respectively taking out the stator dismounting device, the stator 203 and the rear end cover 202 to finish the dismounting work.

The utility model has the advantages of it is following: simple and novel structure, convenient and safe operation, stable and reliable quality and high working efficiency.

Although specific embodiments of the present invention have been described, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the claims appended hereto.

Claims

1. A stator dismounting device is characterized in that: the method comprises the following steps:

wherein the clamping jaw comprises the following two states:

the first state: the round nut rotates, the round nut moves along the axial direction of the screw rod, the outer ring of the second bearing extrudes the two claw arms, the two claw arms rotate synchronously to be closed, and the rubber band is spread;

2. A stator dismounting device according to claim 1, wherein: the device also comprises two screws and two nuts;

3. A stator dismounting device according to claim 2, wherein: the end part of the through hole end of the claw arm is also provided with two chamfers.

4. A stator dismounting device according to claim 3, wherein:

when the clamping jaw is in the first state, the clamping jaw is synchronously rotated and closed to a first preset position along with the two clamping jaw arms, wherein a chamfer far away from the round nut abuts against the bottom of the transverse through groove;

5. A stator dismounting device according to claim 1, wherein: the claw head is provided with an arc surface, and the size of the arc surface radius of the arc surface is less than or equal to the excircle radius of the stator core.

6. A stator dismounting device according to claim 1, wherein: the round nut is also provided with a handle.

7. A stator dismounting device according to claim 2, wherein: one end of the screw rod is provided with a hexagonal section outwards along the axial direction;