CN114629310A

CN114629310A - Motor assembling device and assembling method

Info

Publication number: CN114629310A
Application number: CN202210291930.1A
Authority: CN
Inventors: 杨玉蓉; 邱敏; 陈佳明; 刘畅; 孙政新
Original assignee: Heihe University
Current assignee: Heihe University
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2022-06-14

Abstract

The utility model provides a motor assembly device and assembly method, includes frame, preceding frame, back frame, the removal frame, the cam lever, the clamping bar, press from both sides tight piece, the frame left and right sides has two hydraulic cylinder seats that the symmetry set up, every hydraulic cylinder seat outside has the riser, rotor V groove has in the middle of the frame, rotor V groove left and right sides has two bearing V grooves that the symmetry set up, every bearing V groove upper portion left and right sides has two curb plates that the symmetry set up, the curb plate side has the guide slot, every bearing V groove left and right sides has two pterygoid laminas that the symmetry set up, have the cam groove in the middle of every pterygoid lamina, the cam groove divides into the section of loosening and the section of tightening, every bearing V groove outside has the bearing frame, the bearing frame side has the jack that runs through with bearing V groove, the bearing chamber that the bearing frame vertical direction has and runs through with the jack.

Description

Motor assembling device and assembling method

Technical Field

The invention relates to the field of motor assembly, in particular to a motor assembly device and an assembly method.

Background

In the motor assembling process, the assembling of the rotor bearing is an important process, the quality of the motor is directly influenced by the quality of the rotor bearing, the service life of the motor can be greatly shortened due to poor assembling quality, the assembling of the rotor bearing is time-consuming and labor-consuming, the assembling efficiency of the motor is influenced, and the assembling quality and efficiency are improved by the device.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the motor assembling device and the assembling method which have high self-centering precision and reasonable stress.

The purpose of the invention is realized by the following technical scheme:

a motor assembling device comprises a rack, a front pushing frame, a rear pushing frame, a moving frame, a cam rod, a clamping rod and a clamping block, wherein the left side and the right side of the rack are provided with two hydraulic cylinder seats which are symmetrically arranged, the outer side of each hydraulic cylinder seat is provided with a vertical plate, the middle of the rack is provided with a rotor V groove, the left side and the right side of the rotor V groove are provided with two bearing V grooves which are symmetrically arranged, the left side and the right side of the upper part of each bearing V groove are provided with two side plates which are symmetrically arranged, the side surface of each side plate is provided with a guide groove, the left side and the right side of each bearing V groove are provided with two wing plates which are symmetrically arranged, the middle of each wing plate is provided with a cam groove, the cam groove is divided into an opening section and a tightening section, the outer side of each bearing V groove is provided with a bearing seat, the side surface of the bearing seat is provided with a jack which is penetrated through with the bearing cavity, the inner side of each bearing seat is provided with two guide rods which are symmetrically arranged, the lower portion of the clamping block is provided with an inclined plane, the upper portion of the middle of the clamping block is provided with a gear shaft, the upper portion of the gear shaft is provided with a gear, the inner portion of each gear hole is rotatably connected with one gear shaft, the clamping block rotates in the gear hole, a fourth spring is sleeved on the outer side of the gear shaft, the upper portion of the fourth spring abuts against the lower portion of the gear hole, and the lower portion of the fourth spring abuts against the upper portion of the clamping block.

The middle of the front pushing frame is provided with a front pressing ring, the two sides of the lower portion of the front pushing frame are provided with front pushing frame grooves, the two sides of the upper portion of the front pushing frame are provided with racks, the middle of the rear pushing frame is provided with a rear pressing ring, the two sides of the rear pushing frame are provided with rear pushing frame grooves, the upper portion of each hydraulic cylinder seat is fixedly connected with a hydraulic cylinder, the telescopic rod of the hydraulic cylinder on the left side is fixedly connected with the front pushing frame left side, the telescopic rod of the hydraulic cylinder on the right side is fixedly connected with the rear pushing frame right side, and the racks and the gears are meshed with each other conditionally.

The vertical plate is arranged on the upper portion of the moving frame, two guide holes are symmetrically formed in two sides of the moving frame, two moving frame square holes are symmetrically formed in two sides of the lower portion of the moving frame, the guide holes in the two sides are respectively in sliding connection with guide rods on the two sides, and the moving frame slides along the guide rods on the two sides.

The upper part of the cam rod is provided with a cam rod square hole, one side of the clamping rod is provided with a clamping rod V groove, the middle of the clamping rod is provided with a stop block, each side of the moving frame square hole and the guide groove are provided with one clamping rod, the clamping rod penetrates through a first spring, a moving frame square hole and the guide groove from outside to inside, each clamping rod V groove is arranged on the inner side of the side plate, the moving frame square hole is connected with the clamping rod in a sliding manner, the clamping rod slides in the moving frame square hole, meanwhile, each clamping rod slides in the guide groove on the same side, the outer side of the first spring is propped against the inner side of the stop block, the inner side of the first spring is propped against the outer side of the moving frame square hole, the outer side of the left clamping rod penetrates through a second spring, a cam rod square hole and a front push frame groove from inside to outside, the cam rod square hole is connected with the clamping rod in a sliding manner, the cam rod slides along the clamping rod, the lower part of the cam rod is connected with a cam groove in a sliding manner, the clamping rod is simultaneously connected with the front push frame groove, the inner side of the second spring is propped against the outer side of the stop block, and the outer side of the cam rod square hole of the second spring, the outer side of the right clamping rod penetrates through a second spring, a cam rod square hole and a rear pushing frame groove from inside to outside, the connection relation is the same as that of the left side, a third spring is arranged between the vertical plate and the vertical plate, one side of the cam rod is fixedly connected with the vertical plate, and the other side of the cam rod is fixedly connected with the side face of the vertical plate.

Has the beneficial effects that: when the invention is used, the bearings are placed in the bearing cavities at two sides, the lower bearing is placed in the lower bearing V groove, the rotor is placed in the rotor V groove, the left middle part and the right middle part are kept, the hydraulic cylinders at two sides are started to move towards the middle part simultaneously, the hydraulic cylinder at the left side drives the front push frame, the hydraulic cylinder at the right side drives the rear push frame to move towards the middle part simultaneously, initially, the cam rod is in the loosening section, the distance between the clamping rod V grooves at two sides is larger than the diameter of the bearing, the clamping rod, the front push frame groove and the inner side of the rear push frame groove are in a separated state, when the front push frame and the rear push frame move towards the inner side, the front press ring and the rear press ring push the bearing inner rings at two sides to move towards the inner side along the bearing V groove, when the front press ring and the rear press ring push the bearing to be aligned with the clamping rod V groove, the clamping rod, the inner sides of the front press ring and the rear press ring continue to push frame groove, the bearing, the outer side of the clamping rod and the front push frame groove, The inner sides of the rear push frame grooves begin to contact and push the clamping rods to move towards the inner sides, the clamping rods drive the cam rods to move towards the inner sides, when the cam rods slide from the loosening section to the tightening section, the cam rods on two sides simultaneously move towards the inner sides, the cam rods drive the clamping rods on two sides to move towards the inner sides through a first spring and a second spring, the clamping rods on two sides clamp the bearings, the bearings are centered between two clamping rod V grooves and continue to move towards the inner sides, before the bearings reach a shaft section to be matched, racks on two sides begin to be meshed with gears, the racks drive the gears to rotate, the clamping blocks rotate, the inclined planes begin to contact with the rotors and tightly press the rotors inside the rotor V grooves, the four springs are compressed at the moment to prevent the clamping blocks from rigidly contacting with the rotors, when the rotors are tightly pressed, the bearings begin to be pressed onto the matched shaft sections until the bearings are completely pressed onto the shaft sections to be matched, and then the hydraulic cylinders on two sides begin to change directions, the pneumatic cylinder moves toward the outside, and the pneumatic cylinder drives the gear reversal at first, and the clamp block is at first reset, and the pneumatic cylinder continues to move toward the outside, and preceding pushing frame moves until reseing along with the pneumatic cylinder toward the outside with the back pushing frame, and the movable frame of both sides resets under No. three spring action, and the clamping bar resets under No. one spring and No. two spring actions, accomplishes the assembly of a pneumatic cylinder.

The invention can automatically finish the assembly of the hydraulic cylinder, has high centering precision, reasonable stress, high efficiency and quality guarantee, the hydraulic cylinder and the rotor are centered at the same time during the assembly, the assembly efficiency and the assembly quality can be greatly improved during the assembly, the bearing is prevented from being damaged due to eccentricity, the assembly efficiency and the success rate are improved, the cam rods, the clamping rods, the first spring, the second spring and the frame at two sides jointly form a floating centering device, the cam grooves drive the cam rods, the cam rods drive the clamping rods V grooves at two sides to move inwards through the first spring and the second spring, the clamping rods V grooves at two sides clamp the bearing, so that the bearing is accurate, meanwhile, the centering bearing has certain adjusting capacity, the centering device is suitable for the rotor and the bearing size error or the bearing and the rotor are pressed due to the fact that the bearing and the rotor are not concentric under special conditions, the front push frame, the clamping blocks and the fourth spring form the centering device of the rotor, the clamping block adopts a semicircular inclined plane mechanism, when the forward pushing frame drives the clamping block to rotate, the inclined plane gradually compresses the rotor, the fourth spring plays a role in buffering, the rigid contact between the clamping block and the rotor is prevented, the clamping block adopts the semicircular mechanism, the loading and unloading of the rotor cannot be influenced, the inner ring of the bearing is pushed by the inner sides of the front pressing ring and the rear pressing ring during assembly, other parts of the bearing are not stressed, the bearing can be effectively protected, and the damage of the bearing due to the stress of other parts is avoided.

Drawings

Fig. 1 is a schematic structural diagram of a motor assembling device according to the present invention.

Fig. 2 is a schematic top view of the motor assembling apparatus according to the present invention.

Fig. 3 is a schematic structural diagram of the motor assembling device according to the present invention during assembly.

Fig. 4 is a schematic top view of the motor assembling apparatus according to the present invention.

Fig. 5 is a schematic view of the internal structure of the motor assembling apparatus according to the present invention.

Fig. 6 is a schematic view of a rack structure according to the present invention.

Fig. 7 is a schematic cross-sectional structure view of the rack according to the present invention.

Fig. 8 is a schematic top view of the rack according to the present invention.

Fig. 9 is a schematic structural view of a forward pushing frame according to the present invention.

Fig. 10 is a schematic cross-sectional structure view of the front pushing frame according to the present invention.

Fig. 11 is a schematic structural view of the rear pushing frame according to the present invention.

Fig. 12 is a schematic structural view of a mobile frame according to the present invention.

Fig. 13 is a schematic view of the cam lever structure of the present invention.

FIG. 14 is a schematic view of a clamping bar according to the present invention.

Fig. 15 is a schematic structural view of a clamping block according to the present invention.

Detailed Description

The invention is explained in more detail below with reference to the figures and examples:

a motor assembling device comprises a frame 110, a front push frame 130, a rear push frame 140, a moving frame 150, a cam rod 160, a clamping rod 170 and a clamping block 180, wherein the left side and the right side of the frame 110 are provided with two hydraulic cylinder bases 111 which are symmetrically arranged, the outer side of each hydraulic cylinder base 111 is provided with a vertical plate 112, the middle of the frame 110 is provided with a rotor V-shaped groove 120, the left side and the right side of the rotor V-shaped groove 120 are provided with two bearing V-shaped grooves 117 which are symmetrically arranged, the left side and the right side of the upper part of each bearing V-shaped groove 117 are provided with two side plates 118 which are symmetrically arranged, the side surface of each side plate 118 is provided with a guide groove 119, the left side and the right side of each bearing V-shaped groove 117 are provided with two wing plates 123 which are symmetrically arranged, the middle of each wing plate 123 is provided with a cam groove 124, the cam groove 124 is divided into a loosening section 1241 and a tightening section 1242, the outer side of each bearing V-shaped groove 117 is provided with a bearing block 113, the side of the bearing block 113 is provided with a bearing cavity 115 which is penetrated by the bearing V-114 in the vertical direction, the inner side of each bearing seat 113 is provided with two guide rods 116 which are arranged in a bilateral symmetry mode, the lower portion of each clamping block 180 is provided with an inclined plane 181, the upper portion of the middle of each clamping block 180 is provided with a gear shaft 182, the upper portion of each gear shaft 182 is provided with a gear 183, one gear shaft 182 is rotatably connected to the inside of each gear hole 122, each clamping block 180 rotates in each gear hole 122, a fourth spring 270 is sleeved on the outer side of each gear shaft 182, the upper portion of each fourth spring 270 abuts against the lower portion of each gear hole 122, and the lower portion of each fourth spring 270 abuts against the upper portion of each clamping block 180.

The middle of the front pushing frame 130 is provided with a front pressing ring 133, two sides of the lower part of the front pushing frame 130 are provided with front pushing frame grooves 131, two sides of the upper part of the front pushing frame 130 are provided with racks 132, the middle of the rear pushing frame 140 is provided with a rear pressing ring 143, two sides of the rear pushing frame 140 are provided with rear pushing frame grooves 141, the upper part of each hydraulic cylinder seat 111 is fixedly connected with one hydraulic cylinder 250, a telescopic rod of the hydraulic cylinder 250 on the left side is fixedly connected with the left side of the front pushing frame 130, a telescopic rod of the hydraulic cylinder 250 on the right side is fixedly connected with the right side of the rear pushing frame 140, and the racks 132 and the gears 183 are meshed with each other conditionally.

The upper portion of the movable frame 150 has a vertical plate 153, two sides of the movable frame 150 have two symmetrically arranged guide holes 151, two sides of the lower portion of the movable frame 150 have two symmetrically arranged movable frame square holes 152, the guide holes 151 on two sides are respectively connected with the guide rods 116 on two sides in a sliding manner, and the movable frame 150 slides along the guide rods 116 on two sides.

The upper part of the cam rod 160 is provided with a cam rod square hole 161, one side of the clamping rod 170 is provided with a clamping rod V groove 171, the middle of the clamping rod 170 is provided with a stop block 172, each side of the moving frame square hole 152 and the guide groove 119 is provided with one clamping rod 170, the clamping rod 170 passes through a first spring 230, the moving frame square hole 152 and the guide groove 119 from outside to inside, each clamping rod V groove 171 is arranged on the inner side of the side plate 118, the moving frame square hole 152 is slidably connected with the clamping rod 170, the clamping rod 170 slides in the moving frame square hole 152, simultaneously each clamping rod 170 slides in the same guide groove 119, the outer side of the first spring 230 is abutted against the inner side of the stop block 172, the inner side of the first spring 230 is abutted against the outer side of the moving frame square hole 152, the outer side of the left clamping rod 170 passes through a second spring 240, the cam rod square hole 161 and the front pushing frame groove 131 from inside to outside, the cam rod square hole 161 is slidably connected with the clamping rod 170, the cam rod 160 slides along the clamping rod 170, the cam groove 124 is slidably connected with the front pushing frame groove 131, the inner side of the second spring 240 abuts against the outer side of the stop block 172, the outer side of the second spring 240 abuts against the inner side of the cam rod square hole 161, the outer side of the right clamping bar 170 penetrates through the second spring 240, the cam rod square hole 161 and the rear pushing frame groove 141 from inside to outside, the connection relation is the same as that of the left side, the third spring 260 is arranged between the vertical plate 112 and the vertical plate 153, one side of the cam rod 160 is fixedly connected with the vertical plate 112, and the other side of the cam rod 160 is fixedly connected with the side face of the vertical plate 153.

When the invention is used, the bearings 220 are placed in the bearing cavities 115 at two sides, the lower bearing 220 is placed in the lower bearing V groove 117, the rotor 210 is placed in the rotor V groove 120, the left and right middle parts are kept, the hydraulic cylinders 250 are started, the hydraulic cylinders 250 at two sides move towards the middle simultaneously, the hydraulic cylinder 250 at the left side drives the front push frame 130, the hydraulic cylinder 250 at the right side drives the rear push frame 140 to move towards the middle simultaneously, at the beginning, the cam rod 160 is in the loosening section 1241, the distance between the clamping rod V grooves 171 at two sides is larger than the diameter of the bearing 220, the clamping rod 170, the front push frame groove 131 and the inner side of the rear push frame groove 141 are in a separated state, when the front push frame 130 and the rear push frame 140 move towards the inner sides, the front press ring 133 and the rear press ring 143 push the inner rings of the bearings 220 at two sides to move towards the inner sides along the bearing V groove 117, and when the front press ring 133 and the rear press ring 143 push the bearing 220 to be aligned with the clamping rod V groove 171, the clamping rod groove 170, the clamping rod groove 131, the clamping rod 170, the clamping ring 131, the front press ring 143, The inner sides of the rear push frame grooves 141 begin to contact, the front press ring 133 and the rear press ring 143 continue to push the bearing 220, the outer sides of the clamping bars 170 and the inner sides of the front push frame grooves 131 and the rear push frame grooves 141 begin to contact and push the clamping bars 170 to move inwards, the clamping bars 170 drive the cam bars 160 to move inwards, when the cam bars 160 slide from the loosening section 1241 to the tightening section 1242, the cam bars 160 on both sides move inwards at the same time, the cam bars 160 move the clamping bars 170 on both sides inwards through the first springs 230 and the second springs 240, the clamping bars 170 on both sides clamp the bearing 220, the bearing 220 is centered between the two clamping bar V grooves 171 and continues to move inwards, before the bearing 220 reaches the shaft section to be matched, the racks 132 on both sides begin to be meshed with the gears 183, the racks 132 drive the gears 183 to rotate, the clamping blocks 180 rotate, the inclined surfaces 181 begin to contact with the rotor 210 and press the rotor 210 inside the rotor V grooves 120, and the four-number springs 270 are compressed, the clamping block 180 is prevented from being in rigid contact with the rotor 210, the rotor 210 is pressed, meanwhile, the bearing 220 is pressed onto a matched shaft section until the bearing 220 is completely pressed onto the shaft section to be matched, then the hydraulic cylinders 250 on the two sides start reversing, the hydraulic cylinders 250 move outwards, the hydraulic cylinders 250 drive the gear 183 to rotate reversely at first, the clamping block 180 is reset at first, the hydraulic cylinders 250 continue to move outwards, the front push frame 130 and the rear push frame 140 move outwards along with the hydraulic cylinders 250 until the front push frame and the rear push frame reset, the moving frames 150 on the two sides reset under the action of the third spring 260, the clamping rod 170 resets under the action of the first spring 230 and the second spring 240, and the assembly of the hydraulic cylinders 250 is completed.

The invention can automatically finish the assembly of the hydraulic cylinder 250, has high centering precision, reasonable stress, high efficiency and quality guarantee, the hydraulic cylinder 250 and the rotor 210 are centered at the same time during the assembly, the coaxiality is higher, the assembly efficiency and the assembly quality can be greatly improved during the assembly, the bearing is prevented from being damaged due to eccentricity, the cam rod 160, the clamping rod 170, the first spring 230, the second spring 240 and the frame 110 at two sides jointly form a floating centering device, the cam groove 124 drives the cam rod 160, the cam rod 160 drives the clamping rod V grooves 171 at two sides to move inwards through the first spring 230 and the second spring 240, the clamping rod V grooves 171 at two sides clamp the bearing 220, so that the bearing 220 is centered accurately, meanwhile, the bearing 220 has certain adjusting capacity, the bearing can adapt to the size error of the rotor 210 and the bearing 220 or prevent the bearing 220 and the rotor 210 from being pressed under the special condition because of the eccentricity, the front push frame 130 presses the ring, The clamping block 180 and the fourth spring 270 form a centering device of the rotor 210, the clamping block 180 adopts a semicircular inclined plane mechanism, when the forward pushing frame 130 drives the clamping block 180 to rotate, the inclined plane 181 gradually compresses the rotor 210, the fourth spring 270 plays a role in buffering, the rigid contact between the clamping block 180 and the rotor 210 is prevented, the clamping block 180 adopts the semicircular mechanism, the assembly and disassembly of the rotor 210 cannot be influenced, the working efficiency is improved, the inner rings of the bearing 220 are pushed by the inner sides of the front pressing ring 133 and the rear pressing ring 143 during assembly, other parts of the bearing 220 are not stressed, the bearing can be effectively protected, and the damage of other parts of the bearing due to stress is avoided. The components of the invention are smoothly matched with each other, are prevented from being blocked, are balanced in stress and good in balance, and can greatly improve the assembly efficiency and the assembly quality during assembly.

An assembling method of a motor assembling device is characterized by comprising the following steps: in the first step, when the present invention is used, the bearings 220 are placed in the bearing cavities 115 at both sides, the lower bearings 220 are dropped into the lower bearing V-grooves 117, the rotor 210 is placed inside the rotor V-grooves 120, and the left and right middle portions are maintained, and in the second step, the hydraulic cylinders 250 are actuated, thereby automatically completing the assembly of the rotor 210 and the movable frame 150.

When the invention is used, the bearings are placed in the bearing cavities at two sides, the lower bearing is placed in the lower bearing V groove, the rotor is placed in the rotor V groove, the left middle part and the right middle part are kept, the hydraulic cylinders at two sides are started to move towards the middle part simultaneously, the hydraulic cylinder at the left side drives the front push frame, the hydraulic cylinder at the right side drives the rear push frame to move towards the middle part simultaneously, initially, the cam rod is in the loosening section, the distance between the clamping rod V grooves at two sides is larger than the diameter of the bearing, the clamping rod, the front push frame groove and the inner side of the rear push frame groove are in a separated state, when the front push frame and the rear push frame move towards the inner side, the front press ring and the rear press ring push the bearing inner rings at two sides to move towards the inner side along the bearing V groove, when the front press ring and the rear press ring push the bearing to be aligned with the clamping rod V groove, the clamping rod, the inner sides of the front press ring and the rear press ring continue to push frame groove, the bearing, the outer side of the clamping rod and the front push frame groove, The inner sides of the rear push frame grooves begin to contact and push the clamping rods to move towards the inner sides, the clamping rods drive the cam rods to move towards the inner sides, when the cam rods slide from the loosening section to the tightening section, the cam rods on two sides simultaneously move towards the inner sides, the cam rods drive the clamping rods on two sides to move towards the inner sides through a first spring and a second spring, the clamping rods on two sides clamp the bearings, the bearings are centered between two clamping rod V grooves and continue to move towards the inner sides, before the bearings reach a shaft section to be matched, racks on two sides begin to be meshed with gears, the racks drive the gears to rotate, the clamping blocks rotate, the inclined planes begin to contact with the rotors and tightly press the rotors inside the rotor V grooves, the four springs are compressed at the moment to prevent the clamping blocks from rigidly contacting with the rotors, when the rotors are tightly pressed, the bearings begin to be pressed onto the matched shaft sections until the bearings are completely pressed onto the shaft sections to be matched, and then the hydraulic cylinders on two sides begin to change directions, the pneumatic cylinder moves toward the outside, and the pneumatic cylinder drives the gear reversal at first, and the clamp splice is at first by reseing, and the pneumatic cylinder continues to move toward the outside, and preceding pushing away frame moves until reseing along with the pneumatic cylinder toward the outside with the back pushing away frame, and the movable frame of both sides resets under the spring action No. three, and the clamping bar resets under spring action No. one and No. two spring actions, accomplishes the assembly of a pneumatic cylinder.

Claims

1. A motor assembling device is characterized by comprising a rack, a front pushing frame, a rear pushing frame, a moving frame, a cam rod, a clamping rod and a clamping block, wherein two hydraulic cylinder seats are symmetrically arranged on the left side and the right side of the rack, a vertical plate is arranged on the outer side of each hydraulic cylinder seat, a rotor V-shaped groove is arranged in the middle of the rack, two bearing V-shaped grooves are symmetrically arranged on the left side and the right side of each rotor V-shaped groove, two side plates are symmetrically arranged on the left side and the right side of the upper portion of each bearing V-shaped groove, a guide groove is formed in the side surface of each side plate, two wing plates are symmetrically arranged on the left side and the right side of each bearing V-shaped groove, a cam groove is arranged in the middle of each wing plate and is divided into a loosening section and a tightening section, a bearing seat is arranged on the outer side of each bearing V-shaped groove, a jack penetrating through the bearing V-shaped groove is arranged on the side surface of the bearing seat, a bearing cavity penetrating through the jack is arranged in the vertical direction of the bearing seat, two guide rods are symmetrically arranged on the inner side of each bearing seat, the lower part of the clamping block is provided with an inclined plane, the upper part of the middle of the clamping block is provided with a gear shaft, the upper part of the gear shaft is provided with a gear, the inner part of each gear hole is rotatably connected with one gear shaft, the clamping block rotates in the gear hole, the outer side of the gear shaft is sleeved with a fourth spring, the upper part of the fourth spring is abutted against the lower part of the gear hole, and the lower part of the fourth spring is abutted against the upper part of the clamping block; the middle of the front pushing frame is provided with a front pressing ring, the two sides of the lower portion of the front pushing frame are provided with front pushing frame grooves, the two sides of the upper portion of the front pushing frame are provided with racks, the middle of the rear pushing frame is provided with a rear pressing ring, the two sides of the rear pushing frame are provided with rear pushing frame grooves, the upper portion of each hydraulic cylinder seat is fixedly connected with a hydraulic cylinder, the telescopic rod of the hydraulic cylinder on the left side is fixedly connected with the front pushing frame left side, the telescopic rod of the hydraulic cylinder on the right side is fixedly connected with the rear pushing frame right side, and the racks and the gears are meshed with each other conditionally.

2. The motor assembling device of claim 1, wherein the upper portion of the movable frame has a vertical plate, two sides of the movable frame have two symmetrically disposed guide holes, two sides of the lower portion of the movable frame have two symmetrically disposed square holes of the movable frame, the two guide holes are slidably connected to the guide rods at two sides, respectively, and the movable frame slides along the guide rods at two sides.

3. The motor assembling apparatus as claimed in claim 2, wherein the cam rod has a square hole at an upper portion thereof, and a V-groove at one side thereof.

4. The motor assembling device of claim 3, wherein the middle of the clamping bar has a stop, one clamping bar is arranged in each side of the moving frame square hole and the guide groove, the clamping bar passes through the first spring, the moving frame square hole and the guide groove from outside to inside, each clamping bar V groove is arranged on the inner side of the side plate, the moving frame square hole is connected with the clamping bar in a sliding manner, the clamping bar slides in the moving frame square hole, meanwhile, each clamping bar slides in the same side guide groove, the outer side of the first spring abuts against the inner side of the stop, the inner side of the first spring abuts against the outer side of the moving frame square hole, the outer side of the left clamping bar passes through the second spring, the cam bar square hole and the front pushing frame groove from inside to outside, the cam bar square hole is connected with the clamping bar in a sliding manner, the cam bar slides along the clamping bar, the lower part of the cam bar is connected with the cam groove in a sliding manner, and the clamping bar is simultaneously connected with the front pushing frame groove in a sliding manner.

5. The motor assembling device of claim 4, wherein the inner side of the second spring abuts against the outer side of the stop block, the outer side of the second spring abuts against the inner side of the square hole of the cam rod, the outer side of the right clamping bar penetrates through the second spring, the square hole of the cam rod and the rear pushing frame groove from inside to outside, the third spring is arranged between the vertical plate and the vertical plate, one side of the cam rod is fixedly connected with the vertical plate, and the other side of the cam rod is fixedly connected with the side face of the vertical plate.

6. The method for assembling a motor assembling device according to claim 1, comprising the steps of: when the device is used, the bearings are placed in the bearing cavities on two sides, the lower bearings fall in the lower bearing V grooves, the rotor is placed in the rotor V grooves, the left middle part and the right middle part are kept, and the second step is to start the hydraulic cylinder to automatically complete the assembly of the rotor and the moving frame.