CN113084541A

CN113084541A - Tool clamp of water-cooled thin-wall motor casing and use method thereof

Info

Publication number: CN113084541A
Application number: CN202010022956.7A
Authority: CN
Inventors: 朱小兵
Original assignee: Nantong Jiading Machinery Co ltd
Current assignee: Nantong Jiading Machinery Co ltd
Priority date: 2020-01-09
Filing date: 2020-01-09
Publication date: 2021-07-09

Abstract

The invention relates to a tool clamp of a water-cooled thin-wall motor shell and a processing method thereof, wherein the tool clamp comprises a clamp body, one end of the clamp body is fixedly connected with a front flange, one end of the clamp body, which is far away from the front flange, is fixedly connected with a rear flange, a locking cavity is vertically and downwards formed in the upper surface of the front flange, a plurality of locking threaded holes are radially formed in the side wall of the front flange, each locking threaded hole is communicated with the locking cavity, a locking screw rod is in threaded connection with each locking threaded hole, a quick clamping device is arranged on one side of the rear flange, and a plurality of fixing devices are arranged on one side of the rear flange, which is close to the front. The invention has the effects of quickly fixing the motor shell of the water-cooled thin-wall motor and improving the processing efficiency of the motor shell and the product quality of the motor shell.

Description

Tool clamp of water-cooled thin-wall motor casing and use method thereof

Technical Field

The invention relates to the technical field of machining tools, in particular to a tool clamp of a water-cooled thin-wall motor shell and a using method of the tool clamp.

Background

The tool clamp is a device for clamping a workpiece in the manufacturing process.

Referring to fig. 1, a motor case 1 of the water-cooled thin-walled motor is irregular in shape, a water-cooled runner 11 is separately provided at the outer side of the motor case, and the wall thickness of the motor case 1 and the water-cooled runner 11 is only 6-7 mm.

Chinese patent No. CN101972942B discloses a one-off-cutter tool holder for processing a motor housing and a method for using the same, the tool holder includes a holder main body and four hasps, the holder main body is fixed on a lathe, two ends of the motor housing to be processed are a first processing end and a second processing end respectively, four radially outwardly protruding straps are axially symmetrically arranged on an outer peripheral surface of the first processing end, and four protruding blocks protruding toward the lathe tool and having the same shape and size are axially symmetrically arranged on an end surface of a clamping end of the holder main body; all be equipped with the convex flange of the central axis direction towards the anchor clamps main part on every lug, all be equipped with the screw that is used for fixed hasp on every lug, the interval between the tip of the flange on every lug and the clamp dress end terminal surface of anchor clamps main part is greater than the width of lathe tool. When the motor shell is fixed in the prior art, the bolts need to be screwed forcefully to lock the lapping piece on the motor shell on the lug on the clamp main body.

The above prior art solutions have the following drawbacks: however, since the wall thicknesses of the water-cooled thin-wall motor casing and the water-cooled flow channel are only 6-7mm, when an operator directly clamps the motor casing of the water-cooled thin-wall motor by using bolts, the motor casing is easily deformed due to excessive force, the area of a channel opening of the water-cooled flow channel is small, and the operator cannot easily stretch hands into the water-cooled flow channel, so that in order to improve the yield of products, the operator must carefully and time-consuming lock the water-cooled flow channel and all bolts on the motor casing, and thus the processing efficiency of the motor casing is greatly influenced, and needs to be improved.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the tool clamp for the water-cooled thin-wall motor casing and the using method thereof, and the tool clamp has the advantages of quickly fixing the motor casing of the water-cooled thin-wall motor, and improving the processing efficiency of the motor casing and the product quality of the motor casing.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a frock clamp of water-cooled thin-walled motor shell, includes the anchor clamps body, the ring flange before the one end fixedly connected with of anchor clamps body, the ring flange after the one end fixedly connected with of ring flange before the anchor clamps body is kept away from, the vertical locking chamber of having seted up downwards of upper surface of preceding ring flange, radially seted up a plurality of locking screw holes on the lateral wall of preceding ring flange, each locking screw hole all communicates with each other with the locking chamber, each equal threaded connection has a locking screw in the locking screw hole, one side of back ring flange is provided with quick clamping device, one side that the back ring flange is close to preceding ring flange is provided with a plurality of fixing device.

By adopting the technical scheme, the motor shell of the water-cooled thin-wall motor is sleeved outside the clamp body, and the upper end part and the lower end part of the motor shell are respectively fixed, so that the deformation caused by locking the motor shell locally by using a bolt is avoided, the damage to the motor shell during fixing is reduced, and the product quality of the motor shell is improved; meanwhile, an operator does not need to pay more time to install the motor casing by careful winging, so that the motor casing can be installed quickly, and the processing efficiency of the motor casing is improved.

Furthermore, a plurality of rotating discs are arranged in the locking cavity, and one end of each rotating disc is fixedly connected to the end part of the locking screw rod extending into the locking cavity.

Through adopting above-mentioned technical scheme, the setting of rolling disc for operating personnel can make locking screw's tip conflict on the inside wall of motor casing fast through manual twisting the rolling disc, thereby accelerated the installation effectiveness of motor casing.

Furthermore, a plurality of friction grooves are formed in the outer side wall of each rotating disc along the height direction of the rotating disc.

Through adopting above-mentioned technical scheme, the surface roughness of rolling disc has been increased in seting up of friction recess to reduced operating personnel and twisted smooth probability of hand when moving the rolling disc, consequently operating personnel can twist the rolling disc fast and stably, will contradict the inside wall of locking screw to the motor casing.

Furthermore, a plurality of driving holes are radially formed in the outer side wall of each rotating disc.

Through adopting above-mentioned technical scheme, drive seting up of hole for operating personnel is directly twisting the rolling disc with the hand, thereby makes locking screw's tip support tightly fast after on the inside wall of motor casing, and the rethread is with the help of the stock instrument with driving hole looks adaptation, inserts the stock instrument and establishes to drive downthehole and twist and move the rolling disc, thereby realizes locking screw's locking, has consequently improved the stability after the fixed of motor casing.

Furthermore, each locking screw is kept away from the tip of rolling disc and is all seted up the butt face.

Through adopting above-mentioned technical scheme, when having reduced locking screw butt and motor casing inside wall, the area of contact between locking screw and the motor casing is seted up to the butt face to the deformation that the motor casing produced when having reduced locking screw locking has consequently further improved the product quality of motor casing.

Furthermore, a plurality of connecting rib plates are fixedly connected to the outer side wall of the clamp body, and two ends of each connecting rib plate are respectively and fixedly connected to the opposite side walls of the front flange plate and the rear flange plate.

By adopting the technical scheme, the arrangement of the connecting rib plates improves the maximum load born by the clamp body, so that the shape of the clamp body can be kept stable without deformation, and the service life of the clamp body is prolonged.

Further, quick clamping device includes backup pad, butt claw, connecting plate and clamp bolt, the first groove of stepping down has radially been seted up to one side of back ring flange, the backup pad can be dismantled the lower surface of connecting in the back ring flange, the second groove of stepping down has been seted up to one side of backup pad, first groove of stepping down communicates with each other with the second groove of stepping down, the one end of butt claw is rotated and is connected in the second inslot of stepping down, the connecting plate can be dismantled and be connected on the lateral wall of back ring flange, the connecting plate is located the notch department in first groove of stepping down and the second groove of stepping down, run through along its thickness direction on the connecting plate and seted up the butt screw, clamp bolt threaded connection is in the butt screw.

Through adopting above-mentioned technical scheme, quick clamping device is located the water-cooling runner, comes through rotating clamp bolt for on clamp bolt's tip contradicted the lateral wall of butt claw fast, thereby the motor casing is located the lateral wall to the water-cooling runner and carries out quick fixed, has consequently further improved the installation effectiveness of motor casing.

Further, one side that the backup pad is close to the butt claw is provided with compression spring, compression spring's one end fixed connection in backup pad, compression spring keeps away from the one end of backup pad and contradicts on the lateral wall of butt claw, hold-down bolt is located compression spring.

Through adopting above-mentioned technical scheme, compression spring's setting for the butt claw can receive compression spring's pressure constantly, and is partial to the direction that is close to the motor casing all the time, and like this, when the tip of motor casing contradicts the upper surface at the back ring flange, the butt claw just can be under compression spring's effect, contradicts fast and is located the lateral wall in the water-cooling runner at the motor casing, thereby has made things convenient for the clamping of motor casing, has saved operating time.

Further, the fixing device comprises a fixing block, a sliding bolt and a sealing cover plate, wherein the length direction of the fixing block is the radial direction of the rear flange plate, a sliding cavity is formed in one side, close to the clamp body, of the fixing block along the length direction of the fixing block, the sliding block slides in the sliding cavity, a sliding screw hole is formed in the end, extending into the sliding cavity, of the sliding block along the length direction of the sliding block, a penetrating hole is formed in one end, far away from the clamp body, of the fixing block along the length direction of the fixing block, the penetrating hole is communicated with the sliding cavity, the sliding bolt penetrates through the penetrating hole and is in threaded connection with the sliding screw hole, a limiting block is fixedly connected to the side wall, extending out of the fixing block, a limiting groove is formed in one end, far away from the clamp body, of, the end that seals apron detachable connection and keep away from the anchor clamps body in the fixed block and the bolt that slides passes the jack that slides.

By adopting the technical scheme, when an operator rotates the head of the sliding bolt, the sliding bolt can be limited by the limiting block and does not generate displacement in the horizontal direction, so that when the fixing device fixes the motor shell, the length of the sliding bolt extending out of the closed cover plate is constant all the time, and larger centrifugal force generated by different lengths of the sliding bolt extending out of the closed cover plate when a machine tool drives the motor shell to rotate at a high speed can be reduced, thereby improving the stability of the motor shell during processing.

A use method of a tool clamp of a water-cooled thin-wall motor shell comprises the following steps:

s10, sleeving the motor shell on the outer side of the clamp body from the upper part of the front flange plate until the end part of the motor shell abuts against the upper surface of the rear flange plate;

s20, respectively screwing the sliding bolts, so as to screw out the sliding blocks and enable the sliding blocks to abut against the outer side wall of the motor shell, and then screwing the compression bolts, wherein the compression bolts push the abutting claws to abut against the side wall of the motor shell in the water-cooling flow channel;

and S30, screwing the rotating discs respectively to enable the locking screw to abut against the inner side wall of the motor shell, and locking the locking screw by means of a tool.

By adopting the technical scheme, after the motor shell is sleeved on the outer side of the clamp body, an operator firstly twists the sliding bolt to enable the sliding block to quickly abut against the outer side wall of the motor shell, and then twists the pressing bolt to enable the abutting claw to abut against the outer side wall of the motor shell in the water-cooling flow channel, so that the lower end part of the motor shell is fixed; afterwards, twist the rolling disc respectively for each locking screw all contradicts in the inside wall of motor casing, and lock the locking screw with the help of the instrument, the upper end of motor casing has just so obtained fixedly.

In summary, the invention includes at least one of the following beneficial technical effects:

1. the motor shell of the water-cooled thin-wall motor is sleeved outside the clamp body, and the upper end part and the lower end part of the motor shell are respectively fixed, so that the deformation caused by locking the motor shell locally by using a bolt is avoided, the damage to the motor shell during fixing is reduced, and the product quality of the motor shell is improved; meanwhile, an operator does not need to pay more time to install the motor casing by careful winging, so that the motor casing can be installed quickly, and the processing efficiency of the motor casing is improved.

2. Compression spring's setting for the butt claw can receive compression spring's pressure constantly, and all the time is partial to the direction that is close to the motor casing, and like this, when the tip of motor casing contradicts the upper surface at back ring flange, the butt claw just can be under compression spring's effect, contradicts fast and is located the lateral wall in the water-cooling runner at the motor casing, thereby has made things convenient for the clamping of motor casing, has saved operating time.

3. After sleeving the motor shell on the outer side of the clamp body, an operator firstly twists the sliding bolt to enable the sliding block to quickly abut against the outer side wall of the motor shell, and then twists the pressing bolt to enable the abutting claw to abut against the outer side wall of the motor shell in the water-cooling flow channel, so that the lower end part of the motor shell is fixed; afterwards, twist the rolling disc respectively for each locking screw all contradicts in the inside wall of motor casing, and lock the locking screw with the help of the instrument, the upper end of motor casing has just so obtained fixedly.

Drawings

FIG. 1 is a schematic diagram of a motor casing structure for embodying a water-cooled thin-walled motor;

FIG. 2 is a schematic diagram of the overall structure of a fixture for embodying a water-cooled thin-walled motor case;

FIG. 3 is a schematic view for embodying the structure of the quick clamping device;

fig. 4 is a schematic view for embodying the structure of the fixing device.

Reference numerals: 1. a motor housing; 11. a water-cooling flow channel; 2. a clamp body; 21. a front flange plate; 211. a locking cavity; 212. locking the threaded hole; 22. connecting a rib plate; 23. a rear flange plate; 231. a first abdicating groove; 3. locking the screw rod; 31. an abutting surface; 4. rotating the disc; 41. rubbing the groove; 42. a drive aperture; 5. a fixing device; 51. a fixed block; 511. a sliding cavity; 512. perforating holes; 513. a limiting groove; 52. a sliding block; 521. a sliding screw hole; 53. sliding the bolt; 531. a limiting block; 54. closing the cover plate; 541. slipping the jack; 6. a quick clamping device; 61. a support plate; 611. a second abdicating groove; 62. a butting claw; 63. a connecting plate; 631. abutting against the screw hole; 64. a hold-down bolt; 7. compressing the spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1: referring to fig. 2 and 3, the tool clamp for the water-cooled thin-wall motor casing disclosed by the invention comprises a clamp body 2, wherein a front flange 21 is fixed at one end of the clamp body 2 through welding, a locking cavity 211 is vertically and downwards formed in the upper surface of the front flange 21, a plurality of locking threaded holes 212 are radially formed in the side wall of the front flange 21, and each locking threaded hole 212 is communicated with the locking cavity 211. All threaded connection has locking screw 3 in every locking screw hole 212, and the butt face 31 has all been seted up to the one end that flange dish 21 before every locking screw 3 stretches out, and the butt face 31 in this embodiment is hemispherical to reduce the contact to motor casing 1. A plurality of rotating discs 4 are arranged in the locking cavity 211, one end of each rotating disc 4 is fixedly welded to the end part, extending into the locking cavity 211, of the locking screw 3, a plurality of friction grooves 41 are formed in the outer side wall of each rotating disc 4 along the height direction of the rotating disc 4, and a plurality of driving holes 42 are radially formed in the outer side wall of each rotating disc 4; operating personnel directly twists manual rolling disc 4 with the hand to make locking screw 3's tip support tightly fast at the inside wall of motor casing 1, with the help of with driving the stock instrument of hole 42 looks adaptation again, insert the stock instrument and establish to drive in the hole 42, thereby lock locking screw 3.

Referring to fig. 2, a plurality of connecting rib plates 22 are fixed on the outer side wall of the clamp body 2 by welding, and both ends of each connecting rib plate 22 are respectively fixed on the opposite side walls of the front flange 21 and the rear flange 23 by welding.

Referring to fig. 2 and 4, a rear flange 23 is fixed to one end of the clamp body 2, which is far away from the front flange 21, by welding, one side of the rear flange 23, which is close to the front flange 21, is provided with a plurality of fixing devices 5, and each fixing device 5 comprises a fixing block 51, a sliding block 52, a sliding bolt 53 and a sealing cover plate 54. The length direction of the fixing block 51 is the radial direction of the rear flange 23, and the lower side of the fixing block 51 is fixed to the rear flange 23 by welding. One side of the fixing block 51 close to the clamp body 2 is provided with a sliding cavity 511 along the length direction thereof, one end of the fixing block 51 far away from the clamp body 2 is provided with a through hole 512 along the length direction thereof, and the through hole 512 is communicated with the sliding cavity 511. The end of the fixing block 51 far away from the clamp body 2 is further provided with a limiting groove 513, and the limiting groove 513 is communicated with the through hole 512. The sliding block 52 slides in the sliding cavity 511, and the end of the sliding block 52 extending into the sliding cavity 511 is provided with a sliding screw hole 521 along the length direction thereof, and one end of the sliding bolt 53 passes through the through hole 512 and is in threaded connection with the sliding screw hole 521 on the sliding block 52. In this embodiment, the sliding block 52 is a rectangular block, and the sliding groove is a rectangular groove adapted to the sliding block 52. The limiting block 531 is fixed on the side wall of the sliding bolt 53 extending out of the fixing block 51 through welding, the limiting block 531 is embedded in the limiting groove 513, the outer contour of the limiting block 531 is circular in the embodiment, and the limiting groove 513 is a circular groove matched with the limiting block 531. One side of the closed cover plate 54 is penetrated along the thickness direction thereof and provided with a sliding insertion hole 541, the closed cover plate 54 is connected to one end of the fixing block 51 far away from the clamp body 2 through a bolt, and the head of the sliding bolt 53 penetrates through the sliding insertion hole 541 and extends out of the closed cover plate 54.

Referring to fig. 2 and 3, one side of the rear flange 23 is provided with a quick clamping device 6, and the quick clamping device 6 includes a support plate 61, an abutment claw 62, a connecting plate 63, and a pressing bolt 64. One side of the rear flange plate 23 is radially provided with a first avoiding groove 231, and the support plate 61 is detachably connected to the lower surface of the rear flange plate 23 provided with the first avoiding groove 231 through bolts. One side of the supporting plate 61 is provided with a second yielding groove 611, and the first yielding groove 231 is communicated with the second yielding groove 611. One end of the abutting claw 62 is rotatably connected to the second avoiding groove 611 through a pin, and the other end of the abutting claw 62 extends upward to the upper side of the rear flange plate 23. The connecting plate 63 is located at the notches of the first and

second relief grooves

231 and 611, the connecting plate 63 is detachably connected to the side wall of the rear flange 23 by bolts, and the connecting plate 63 and the support plate 61 are further fixed by bolts. The connecting plate 63 has an abutment screw hole 631 extending therethrough in the thickness direction thereof, and the pressing bolt 64 is screwed into the abutment screw hole 631. One side that backup pad 61 is close to butt claw 62 is provided with compression spring 7, and compression spring 7's diameter is greater than the aperture of butt screw 631, and welded fastening is passed through to compression spring 7's one end in backup pad 61, and compression spring 7's the other end is contradicted on the lateral wall of butt claw 62. The compression spring 7 is coaxial with the abutment screw hole 631, and the pressure bolt 64 is freely movable within the compression spring 7 when threadedly engaged with the abutment screw hole 631.

Example 2: the invention discloses a use method of a tool clamp of a water-cooled thin-wall motor shell, which comprises the following steps:

s10, the motor casing 1 is sleeved on the outer side of the clamp body 2 from the upper side of the front flange 21 until the end of the motor casing 1 abuts against the upper surface of the rear flange 23, the three fixing devices 5 are located on the outer side of the motor casing 1, and the quick clamping device 6 is located in the water cooling flow channel 11.

S20, respectively screwing the sliding bolts 53, thereby unscrewing the sliding block 52 and making the sliding block 52 abut against the outer side wall of the motor casing 1, and then screwing the pressing bolt 64, the pressing bolt 64 pushing the abutting claw 62 to abut against the side wall of the motor casing 1 located in the water-cooling flow channel 11, so that the bottom end of the motor casing 1 can be quickly fixed by the three fixing devices 5 and the quick clamping device 6.

And S30, screwing the rotating discs 4 respectively to enable the locking screw rods 3 to abut against the inner side wall of the motor shell 1, and locking the locking screw rods 3 by means of tools.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a frock clamp of water-cooled thin wall motor casing which characterized in that: including anchor clamps body (2), ring flange (21) before the one end fixedly connected with of anchor clamps body (2), ring flange (23) behind the one end fixedly connected with of ring flange (21) before anchor clamps body (2) are kept away from, locking chamber (211) have been seted up downwards to the upper surface of preceding ring flange (21) is vertical, radially seted up a plurality of locking screw holes (212) on the lateral wall of preceding ring flange (21), each locking screw hole (212) all communicate with each other with locking chamber (211), each equal threaded connection has locking screw (3) in locking screw hole (212), one side of back ring flange (23) is provided with quick clamping device (6), one side that back ring flange (23) are close to preceding ring flange (21) is provided with a plurality of fixing device (5).

2. The tool clamp of the water-cooled thin-wall motor casing according to claim 1, characterized in that: a plurality of rotating discs (4) are arranged in the locking cavity (211), and one end of each rotating disc (4) is fixedly connected to the end part of the locking screw rod (3) extending into the locking cavity (211).

3. The tool clamp of the water-cooled thin-wall motor casing according to claim 2, characterized in that: the outer side wall of each rotating disc (4) is provided with a plurality of friction grooves (41) along the height direction.

4. The tool clamp of the water-cooled thin-wall motor casing according to claim 2, characterized in that: a plurality of driving holes (42) are radially formed in the outer side wall of each rotating disc (4).

5. The tool clamp of the water-cooled thin-wall motor casing according to claim 2, characterized in that: each locking screw rod (3) is far away from the end part of the rotating disc (4) and is provided with a butt joint surface (31).

6. The tool clamp of the water-cooled thin-wall motor casing according to claim 1, characterized in that: the outer side wall of the clamp body (2) is fixedly connected with a plurality of connecting rib plates (22), and two ends of each connecting rib plate (22) are respectively and fixedly connected to the opposite side walls of the front flange plate (21) and the rear flange plate (23).

7. The tool clamp of the water-cooled thin-wall motor casing according to claim 1, characterized in that: the quick clamping device (6) comprises a support plate (61), an abutting claw (62), a connecting plate (63) and a pressing bolt (64), a first abdicating groove (231) is radially arranged on one side of the rear flange plate (23), the supporting plate (61) is detachably connected with the lower surface of the rear flange plate (23), a second abdicating groove (611) is arranged on one side of the supporting plate (61), the first abdicating groove (231) is communicated with the second abdicating groove (611), one end of the abutting claw (62) is rotatably connected in the second abdicating groove (611), the connecting plate (63) is detachably connected to the side wall of the rear flange plate (23), the connecting plate (63) is positioned at the notch of the first and second avoiding grooves (231, 611), an abutting screw hole (631) penetrates through the connecting plate (63) along the thickness direction of the connecting plate, and the pressing bolt (64) is connected into the abutting screw hole (631) in a threaded mode.

8. The tool clamp of the water-cooled thin-wall motor casing according to claim 7, characterized in that: one side that backup pad (61) is close to butt joint claw (62) is provided with compression spring (7), the one end fixed connection of compression spring (7) in backup pad (61), the one end that backup pad (61) were kept away from in compression spring (7) is contradicted on the lateral wall of butt joint claw (62), compression bolt (64) are located compression spring (7).

9. The tool clamp of the water-cooled thin-wall motor casing according to claim 1, characterized in that: the fixing device (5) comprises a fixing block (51), a sliding block (52), a sliding bolt (53) and a sealing cover plate (54), wherein the length direction of the fixing block (51) is the radial direction of the rear flange plate (23), a sliding cavity (511) is formed in one side, close to the clamp body (2), of the fixing block (51) along the length direction of the fixing block, the sliding block (52) slides in the sliding cavity (511), a sliding screw hole (521) is formed in the end, extending into the sliding cavity (511), of the sliding block (52) along the length direction of the sliding screw hole, a penetrating hole (512) is formed in one end, far away from the clamp body (2), of the fixing block (51) along the length direction of the fixing block, the penetrating hole (512) is communicated with the sliding cavity (511), the sliding bolt (53) penetrates through the penetrating hole (512) and is in threaded connection with the sliding screw hole (521), a limiting block (531) is fixedly connected to the side wall, extending out of the, spacing groove (513) have been seted up to fixed block (51) one end of keeping away from anchor clamps body (2), stopper (531) are inlayed and are located spacing groove (513), one side of closing cover plate (54) is run through along its thickness direction and has been seted up sliding insertion hole (541), closing cover plate (54) can be dismantled and connect and pass sliding insertion hole (541) in fixed block (51) one end of keeping away from anchor clamps body (2) and the end of sliding bolt (53).

10. The use method of the tool clamp of the water-cooled thin-wall motor shell is characterized by comprising the following steps of: the method comprises the following steps:

s10, sleeving the motor shell (1) on the outer side of the clamp body (2) from the upper side of the front flange (21) until the end part of the motor shell (1) abuts against the upper surface of the rear flange (23);

s20, respectively screwing the sliding bolts (53), so as to screw out the sliding block (52) and enable the sliding block (52) to abut against the outer side wall of the motor casing (1), and then screwing the compression bolt (64), wherein the compression bolt (64) pushes the abutting claw (62) to abut against the side wall of the motor casing (1) in the water-cooling flow channel (11);

and S30, screwing the rotating discs (4) respectively to enable the locking screw rods (3) to abut against the inner side wall of the motor shell (1), and locking the locking screw rods (3) by means of tools.