A stator disassembly device

Abstract

The present invention provides a stator disassembly device, comprising: two clamping jaws, including a jaw arm and a jaw head fixed together; the jaw arm is provided with an inclined surface, a groove and a stepped surface; a tooling body, which is provided with a threaded section, a jaw arm mounting section and a positioning section from front to back, and a stepped through hole is provided in the center; a round nut, which is provided with a large diameter section and a small diameter section, and a second threaded hole is provided at the center; a screw rod, which passes through the stepped through hole and is screwed into the first threaded hole; a second bearing, the small diameter section is embedded in the inner ring of the second bearing; the outer ring of the second bearing abuts against the two inclined surfaces; at least one rubber band, the rubber band is tightly sleeved in the two grooves. By rotating the round nut, the two clamping jaws are opened or closed, so as to loosen or clamp the stator. The screw rod abuts against the second bolt, and the stator is disassembled by rotating the screw rod. The invention has the advantages of simple structure, simple and convenient operation, low labor intensity, high efficiency, and no influence on product quality, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of the production and maintenance of generators, in particular to a stator disassembly device. Background Art

[0002] A generator set is connected by a generator and power, converting mechanical energy into electrical energy for electrical appliances to use, where the power can be a diesel engine or a gasoline engine.

[0003] As Figure 1 shown, the power part 300 connected to the generator includes a power side cover 301 and a crankshaft output end 302. The power side cover 301 has an outwardly convex circular stop 3012, a plane 3011, and a first screw hole 3013. The crankshaft output end 302 has an outer taper section 3021 and a second screw hole 3022.

[0004] As Figure 2As shown in the figure, the generator 200 mainly consists 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, etc.; the stator 203 includes a stator core 2031 and a stator coil 2032, the rotor 204 includes a rotor core 2041, a rotor coil 2042, a rotating shaft 2043, a first bearing 2044 and a wind blade 2045, and the rotor core 2041, the first bearing 2044 and the wind blade 2045 are all fixed on the rotating shaft 2043; the front end cover 201 has a first inner circular stop 2011 that mates with the stator core 2031, a circular through hole 2012 that mates with the outer convex circular stop 3012 of the power side cover 301, a front end face 2013 and a first bolt avoidance hole 2014. The first bolt 205 passes through the first bolt avoidance 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, and its inner through hole includes a tapered hole 20431 in the front section and a second bolt avoidance hole 20432 in the rear section. The tapered hole 20431 mates with the outer tapered section 3021 of the crankshaft output end 302. The second bolt 206 passes through the second bolt avoidance 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 stop 2021 that mates with the stator core 2031, a first bearing chamber 2022 that mates with the outer ring of the first bearing 2044, a first avoidance hole 2023 and an outer peripheral rear end face 2024; the stator 203 is sleeved around the rotor 204, and both ends of its stator core 2031 are respectively inserted into the first inner circular stop 2011 of the front end cover 201 and the second inner circular stop 2021 of the rear end cover 202. At the same time, the first bearing is placed in the first bearing chamber 2022, and the stator is fixed to the front and rear end covers by the third bolt 207 through the front and rear end covers, and there is a gap between the stator and the rotor.

[0005] Since the first inner circular stop 2011 of the front end cover 201, the second inner circular stop 2021 of the rear end cover 202 and the stator core 2031 are all in a mating structure of a complete circle and there is no gap between them; therefore, when producing, testing or repairing, if it is necessary to remove the stator, it is difficult. After loosening the third bolt 207, it is impossible to pull out the stator core 2031 from the first inner circular stop 2011 of the front end cover 201 by hand. It can only be removed by continuously hitting the outer peripheral surface of the stator core 2031 with a hammer to generate vibration, which is not only time-consuming and laborious, with high labor intensity and low efficiency, but even affects the product quality. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a stator disassembly device, which has the advantages of simple structure, simple and convenient operation, low labor intensity, high efficiency, and no impact on product quality, etc.

[0007] The present invention is implemented as follows: A stator disassembly device includes:

[0008] Two clamping jaws, including a jaw arm and a jaw head fixed together; the jaw arm is provided with an inclined surface, a groove and a stepped surface;

[0009] A tooling body, which is provided with a threaded section, a jaw arm mounting section and a positioning section from front to back, and a stepped through hole is provided in the center; the large hole of the stepped through hole is the second avoidance hole, and the small hole is the first threaded hole;

[0010] A round nut, which is provided with a large diameter section and a small diameter section, and a second threaded hole is provided at the center; the second threaded hole is screwed together with the threaded section;

[0011] A screw rod, which passes through the stepped through hole and is screwed into the first threaded hole;

[0012] A second bearing, the small diameter section is embedded in the inner ring of the second bearing and is in a tight fit; the outer ring of the second bearing abuts against the two inclined surfaces;

[0013] At least one rubber band, and the rubber band is tightly sleeved in the two grooves;

[0014] Wherein, the clamping jaws include the following two states:

[0015] State one: The round nut rotates, the round nut moves along the axial direction of the screw rod, the outer ring of the second bearing squeezes the two jaw arms, the two jaw arms rotate and close synchronously, and the rubber band is stretched open;

[0016] State two: The round nut rotates in the opposite direction to state one, the round nut moves along the axial direction of the screw rod and moves in the opposite direction to that in state one, the outer ring of the second bearing releases the two jaw arms, and the rubber band shrinks and tightens to hold the two jaw arms and rotate and open synchronously.

[0017] Furthermore, it further includes two screws and two nuts;

[0018] The jaw arm is further provided with a through hole; the through hole and the screw adopt a clearance fit;

[0019] The left and right sides of the jaw arm mounting section are respectively provided with extending parts outward, and each extending part is provided with a longitudinally through hole and a laterally through groove that communicate with each other; the width of the laterally through groove and the thickness of the jaw arm are in a clearance fit;

[0020] The through-hole end of the claw arm is inserted into the transverse through groove, and the screws respectively pass through the longitudinal through holes and the through holes and are locked with the nuts, and the two claw heads are arranged facing each other.

[0021] Further, two chamfers are also provided at the end of the through-hole end of the claw arm.

[0022] Further, when the clamping jaw is in state one, as the two claw arms rotate synchronously and close to a predetermined position one, one of the chamfers away from the round nut abuts against the bottom of the transverse through groove;

[0023] When the clamping jaw is in state two, as the two claw arms rotate synchronously and open to a predetermined position two, the other chamfer close to the round nut abuts against the bottom of the transverse through groove.

[0024] Further, the claw head is provided with an arc surface, and the arc radius dimension of the arc surface ≤ the outer circle radius of the stator core.

[0025] Further, the round nut is also provided with a handle.

[0026] Further, one end of the screw rod is provided with a hexagonal section axially outward;

[0027] The other end of the screw rod is also sequentially provided with a cylindrical section and a conical section axially outward.

[0028] The present invention has the following advantages: A stator disassembly device includes: two clamping jaws, including a claw arm and a claw head fixed together; the claw arm is provided with an inclined surface, a groove and a stepped surface; a tooling body is provided with a threaded section, a claw arm installation section and a positioning section from front to back, and a stepped through hole is provided in the center, and its small hole is a first threaded hole; a round nut is provided with a large diameter section and a small diameter section, and a second threaded hole is provided in the center; a screw rod passes through the stepped through hole and is screwed into the first threaded hole; a second bearing, the small diameter section is embedded in the inner ring of the second bearing; the outer ring of the second bearing abuts against the two inclined surfaces; at least one rubber band, and the rubber band is tightly sleeved in the two grooves. By rotating the round nut, the two clamping jaws are opened or closed, so as to loosen or clamp the stator, the screw rod abuts against the second bolt, and the stator is disassembled by rotating the screw rod. The present invention has the advantages of simple structure, simple and convenient operation, low labor intensity, high efficiency, and no influence on product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The following further describes the present invention with reference to the accompanying drawings in conjunction with embodiments.

[0030] Figure 1 It is a structural schematic diagram of the power connection part in the background technology.

[0031] Figure 2Schematic diagram of the generator structure and its connection to power as the background technology.

[0032] Figure 3 Front view schematic diagram of the stator disassembly device of the present invention.

[0033] Figure 4 Rear view schematic diagram of the stator disassembly device of the present invention.

[0034] Figure 5 Schematic diagram of the structure of the two jaws of the present invention.

[0035] Figure 6 Front view schematic diagram of the tooling body of the present invention.

[0036] Figure 7 Rear view schematic diagram of the tooling body of the present invention.

[0037] Figure 8 Schematic diagram of the structure of the round nut of the present invention.

[0038] Figure 9 Schematic diagram of the structure of the screw rod of the present invention.

[0039] Figure 10 Schematic diagram of the first use state of the stator disassembly device of the present invention.

[0040] Figure 11 Schematic diagram of the second use state of the stator disassembly device of the present invention.

[0041] Explanation of reference numerals: Background technology:

[0043] Power part 300, power side cover 301, outer convex circular stop 3012, plane 3011, first screw hole 3013, crankshaft output end 302, outer taper section 3021, second screw hole 3022;

[0044] Generator 200, front end cover 201, first inner circular stop 2011, circular through hole 2012, front end face 2013, first bolt avoidance hole 2014, rear end cover 202, second inner circular stop 2021, first bearing chamber 2022, first avoidance hole 2023, outer peripheral rear end face 2024, stator 203, stator core 2031, stator coil 2032, rotor 204, rotor core 2041, rotor coil 2042, rotating shaft 2043, taper hole 20431, second bolt avoidance hole 20432, first bearing 2044, wind blade 2045, first bolt 205, second bolt 206, third bolt 207.

[0045] The present invention:

[0046] Jaw 1, jaw arm 11, through hole 111, chamfer 112, inclined surface 113, groove 114, step surface 115, jaw head 12, arc surface 121;

[0047] Tooling body 2, threaded section 21, jaw arm mounting section 22, longitudinal through hole 221, transverse through slot 222, slot bottom 2221, positioning section 23, stepped through hole 24, second avoidance hole 241, first threaded hole 242;

[0048] Circular nut 3, large diameter section 31, small diameter section 32, second threaded hole 33, handle 34;

[0049] Screw rod 4, hexagonal section 41, cylindrical section 42, conical section 43;

[0050] Second bearing 5;

[0051] Screw 6;

[0052] Nut 7;

[0053] Rubber band 8. Specific implementation mode

[0054] In the description of the 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 the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the protection scope of the invention.

[0055] In the description of the invention, it should be noted that unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the invention can be understood according to specific situations.

[0056] The inventive concept of the present invention is as follows:

[0057] By rotating the circular nut 3, the two jaws 1 are opened or closed, so as to loosen or clamp the stator. The screw rod 4 abuts against the second bolt 206, and the stator is pushed out and disassembled by rotating the screw rod 4. The present invention has the advantages of simple structure, simple and convenient operation, low labor intensity, high efficiency, and no influence on product quality.

[0058] Please refer to Figures 1 to 11 as shown.

[0059] Example:

[0060] A stator disassembly device, comprising:

[0061] Two clamping jaws 1, including a claw arm 11 and a claw head 12 fixed together; the claw arm 11 is provided with an inclined surface 113, a groove 114 and a step surface 115; during operation, the step surface 115 abuts against the outer peripheral rear end surface 2024 of the rear end cover 202, making the stator disassembly device in a more stable state during operation and facilitating operation.

[0062] A tooling body 2, which is provided with a threaded section 21, a claw arm mounting section 22 and a positioning section 23 from front to back, and a stepped through hole 24 is provided in the center; the large 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 avoidance hole 2023 of the rear end cover 202 during operation, playing a role of centering and positioning.

[0063] A round nut 3, which is provided with a large diameter section 31 and a small diameter section 32, and a second threaded hole 33 is provided at the center; the second threaded hole 33 is screwed together with the threaded section 21;

[0064] A screw rod 4, which passes through the stepped through hole 24 and is screwed into the first threaded hole 242;

[0065] A second bearing 5, the small diameter section 32 is embedded in the inner ring of the second bearing 5 and is in a tight fit; the outer ring of the second bearing 5 abuts against the two inclined surfaces 113; in a specific implementation, the outer ring of the second bearing 5 is provided with an arc chamfer; by using the arc chamfer surface at the edge of the outer ring of the second bearing 5 to contact the inclined surface 113 of the claw arm 11, designed in this way, when the round nut 3 is rotated, the outer ring of the second bearing 5 does not rotate but only moves back and forth, making the inclined surface 113 have no friction force in the circumferential direction, and making the work of rotating the round nut to clamp the iron core easier and more labor-saving.

[0066] At least one rubber band 8, the rubber band 8 is tightly sleeved in the two grooves 114, making 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 band 8. Specifically, in implementation, it can be pre-adjusted before use, select the number of rubber bands, and adjust it to a better state, so that the two clamping jaws 1 automatically open and at the same time facilitate rotation and clamping.

[0067] Wherein, the clamping jaw 1 includes the following two states:

[0068] State 1: 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 squeezes the two claw arms 11, the two claw arms 11 rotate and close synchronously, and the rubber band 8 is stretched open;

[0069] State 2: The round nut 3 rotates in the direction opposite to that in State 1. The round nut 3 moves axially along the screw rod 4 and in the direction opposite to that in State 1. The outer ring of the second bearing 5 loosens the two claw arms 11, and the rubber band 8 tightens to hold the two claw arms 11 and rotate and open them synchronously, realizing the function of automatic opening. The rotation direction of the round nut 3 can be preset. For example, when rotating clockwise, the two claw arms 11 rotate and close correspondingly; when rotating counterclockwise, the two claw arms 11 rotate and open correspondingly.

[0070] It also includes two screws 6 and two nuts 7;

[0071] The claw arm 11 is also 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 slot 222, enabling the two clamping claws 1 to have the functions of opening and closing.

[0072] The left and right sides of the claw arm mounting section 22 are respectively provided with outward extending parts, and each extending part is provided with a longitudinally through hole 221 and a transversely through slot 222 that communicate with each other; the width of the transversely through slot 222 and the thickness of the claw arm 11 are in clearance fit;

[0073] The through hole end of the claw arm 11 is inserted into the transversely through slot 222, and the screws 6 pass through the longitudinally through hole 221 and the through hole 111 respectively and are locked with the nuts 7, and the two claw heads 12 are arranged facing each other.

[0074] The end of the through hole end of the claw arm 11 is also provided with two chamfers 112.

[0075] In a specific implementation, the degree of opening and closing of the two clamping claws 1 is preset according to the working requirements during design. For example, it is determined by the sizes of the two chamfers 112 of the claw arm 11.

[0076] When the clamping claw 1 is in State 1, as the two claw arms 11 rotate and close synchronously to a predetermined position 1, one of the chamfers 112 far from the round nut 3 abuts against the bottom 2221 of the transversely through slot 222; corresponding to the limit position of closing, so that after the stator disassembly device is removed from the generator, the two clamping claws 1 will not close too small.

[0077] When the clamping claw 1 is in State 2, as the two claw arms 11 rotate and open synchronously to a predetermined position 2, the other chamfer close to the round nut 3 abuts against the bottom 2221 of the transversely through slot 222. Corresponding to the limit position of opening, so that when clamping the stator of the generator, the two clamping claws 1 do not need to open too much, facilitating subsequent closing and clamping and reducing the consumption of useless work.

[0078] The claw head 12 is provided with an arc surface 121, and the arc radius dimension of the arc surface 121 ≤ the outer circle radius of the stator core 2031. Such a design is conducive to clamping the stator core 2031 by the two claw heads.

[0079] The round nut 3 is further provided with a handle 34, which is convenient for rotating the round nut 3 and facilitating operation.

[0080] One end of the screw rod 4 is axially provided with a hexagonal section 41 outward;

[0081] The other end of the screw rod 4 is axially provided with a cylindrical section 42 and a conical section 43 outward in sequence.

[0082] When the stator disassembly device of the present invention is working, please refer to Figure 2 、 Figure 3 、 Figure 10 and Figure 11 , and its operation steps are as follows:

[0083] (1) Loosen the third bolt 207 of the generator.

[0084] (2) Rotate the handle 34 counterclockwise to move the second bearing 5 backward with the round nut 3. At the same time, the two jaws 1 open outward under the action of the rubber band 8 until the chamfer 112 of the jaw arm 11 abuts against the bottom 2221 of the transverse through groove 222 of the tooling body 2.

[0085] (3) Place the claw head 12 outside the generator stator core 2031, insert the positioning section 23 of the tooling body 2 into the first avoidance hole 2023 of the generator rear end cover 202, and make the stepped surface 115 of the jaw arm 11 abut against the outer peripheral rear end surface 2024 of the rear end cover 202. Then rotate the handle 34 clockwise to move the second bearing 5 forward with the round nut 3. The outer ring edge of the second bearing 5 slides forward against the inclined surface 113, forcing the two jaws 1 to close and clamping the stator core 2031.

[0086] (4) Use an internal hexagonal socket wrench, which can be manual, pneumatic or electric socket wrench. Put it on the hexagonal section 41 of the screw rod 4 and rotate it clockwise so that the top of the conical section 43 of the screw rod 4 abuts against the top surface 2061 of the head of the second bolt 206. Then continue to rotate the socket wrench, and the screw rod 4 continues to move axially, so that the stator core 2031 can be easily and quickly pushed out, separated from the first inner circular stop 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. Then rotate the handle 32 counterclockwise to open the two jaws 1 outward, and then take out the stator disassembly device and the stator 203 and the rear end cover 202 respectively, and the disassembly work is completed.

[0087] The present invention has the following advantages: simple and novel structure, convenient and safe operation, stable and reliable quality, and high working efficiency.

[0088] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments we described are illustrative rather than used to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered by the scope protected by the claims of the present invention.

Claims

1. A stator disassembly device, characterized in that: Comprising: Two clamping jaws, including a jaw arm and a jaw head fixed together; the jaw arm is provided with an inclined surface, a groove, a step surface and a through hole; A tooling body, which is provided with a threaded section, a jaw arm mounting section and a positioning section from front to back, and a stepped through hole is provided in the center; the large hole of the stepped through hole is the second avoidance hole, and the small hole is the first threaded hole; A round nut, which is provided with a large diameter section and a small diameter section, and a second threaded hole is provided in the center; the round nut is also provided with a handle; the second threaded hole and the threaded section are screwed together; A screw rod, which passes through the stepped through hole and is screwed into the first threaded hole; A second bearing, the small diameter section is embedded in the inner ring of the second bearing and is in a tight fit; the outer ring of the second bearing abuts against the two inclined surfaces; the outer ring of the second bearing is provided with an arc chamfer; At least one rubber band, and the rubber band is tightly sleeved in the two grooves; Two screws; Two nuts; The through hole and the screw are in clearance fit; The left and right sides of the jaw arm mounting section are respectively provided with outward extending parts, and each extending part is provided with a longitudinally through hole and a laterally through groove that communicate with each other; the width of the laterally through groove and the thickness of the jaw arm are in clearance fit; The through hole end of the jaw arm is inserted into the laterally through groove, the screws respectively pass through the longitudinally through hole and the through hole and are locked with the nuts, and the two jaw heads are arranged facing each other; The power part connected to the generator includes a power side cover and a crankshaft output end; the front end cover is fixedly connected to the power side cover; the rotor is fixedly connected to the crankshaft output end; the stator core is sleeved around the rotor, and the two ends of the stator core are respectively inserted into the first inner circular stop of the front end cover and the second inner circular stop of the rear end cover; the stator is fixed together with the front end cover and the rear end cover by the third bolt; the step surface of the jaw arm abuts against the outer peripheral rear end surface of the rear end cover; Wherein, the clamping jaw includes the following two states: State 1: The round nut rotates, the round nut moves axially along the screw rod, the outer ring of the second bearing presses the two jaw arms, the two jaw arms rotate and close synchronously, and the rubber band is stretched open; State 2: The round nut rotates in the opposite direction to State 1, the round nut moves axially along the screw rod and in the opposite direction to the movement direction in State 1, the outer ring of the second bearing releases the two jaw arms, and the rubber band shrinks and tightens to hold the two jaw arms and rotate and open synchronously; The end of the through hole end of the jaw arm is also provided with two chamfers; When the clamping jaw is in State 1, as the two jaw arms rotate and close synchronously to a predetermined position 1, one of the chamfers far from the round nut abuts against the bottom of the laterally through groove; When the clamping jaw is in State 2, as the two jaw arms rotate and open synchronously to a predetermined position 2, the other chamfer close to the round nut abuts against the bottom of the laterally through groove; The jaw head is provided with an arc surface, and the arc radius dimension of the arc surface ≤ the outer circle radius of the stator core; One end of the screw rod is provided with a hexagonal section axially outward; The other end of the screw rod is also sequentially provided with a cylindrical section and a conical section axially outward.

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