A voltage-resistant motor end cover and a manufacturing method thereof

Abstract

The present invention discloses a voltage-resistant motor end cover and a manufacturing method thereof, which includes a body. The body includes a bearing chamber and a mounting seat. A mounting hole is provided at the center of the mounting seat. The bearing chamber is located above the mounting hole. The bearing chamber includes a cylindrical cavity and a bearing hole. The bearing hole is provided at the top of the cavity. The bearing hole and the mounting hole are concentrically arranged. Reinforcement components are also circumferentially distributed on the outer side wall of the bearing chamber. The reinforcement components are fixedly connected to the mounting seat. The method includes: a. Preparation in the early stage; b. Assembly of the bearing chamber and the clamping member; c. Connection between the bearing chamber and the mounting seat; d. Turning over of the mounting seat; e. Installation of the clamping member. By the setting of the reinforcement components, the structural strength of the connection between the bearing chamber and the mounting seat is increased, thereby increasing the voltage-resistant ability of the motor, avoiding damage to the motor, and thus increasing the service life of the motor.

Description

Technical Field

[0001] The present invention belongs to the technical field of motor equipment, and particularly relates to a voltage-resistant motor end cover and a manufacturing method thereof. Background Art

[0002] In reality, in order to protect the motor, an end cover is often installed on the motor. The end cover can prevent external forces from damaging the motor, can also play a role in dust-proofing and moisture-proofing the motor, and at the same time can also play a heat dissipation effect on the motor.

[0003] However, in the prior art, in order to increase the heat dissipation effect on the motor, heat dissipation holes are opened between the bearing chamber and the mounting seat of the motor end cover, which results in a decrease in the structural strength of the motor end cover itself, leading to insufficient voltage resistance of the motor, and thus easily causing damage to the motor and reducing the service life of the motor. Summary of the Invention

[0004] The object of the present invention is to solve the above-mentioned technical problems existing in the prior art, and to provide a voltage-resistant motor end cover and a manufacturing method thereof. By providing a bearing chamber and a mounting seat, a mounting hole is opened in the center of the mounting seat, the bearing chamber is arranged above the mounting hole, and a reinforcing component is installed between the outer side wall of the bearing chamber and the mounting seat. The setting of the reinforcing component increases the structural strength of the connection between the bearing chamber and the mounting seat, thereby increasing the voltage-resistant capacity of the motor, avoiding damage to the motor, and thus increasing the service life of the motor; in this method, through the previous preparation, semi-finished bearing chambers and mounting seats are first manufactured, and then the bearing chambers and mounting seats are processed respectively. After processing, they are assembled. First, the bearing chamber is connected to the reinforcing component. By providing an orbital ring and a clamping block, the orbital ring is used to arrange the reinforcing blocks in a ring shape, so that the reinforcing blocks are circumferentially distributed on the outer side of the bearing chamber. The setting of the clamping block makes the reinforcing blocks fixedly connected to the orbital ring, so that when the reinforcing blocks are welded to the outer side wall of the bearing chamber, the reinforcing blocks will not shake, improving the welding precision between the bearing chamber and the reinforcing blocks, and at the same time avoiding the occurrence of virtual welding when the bearing chamber and the reinforcing blocks are welded, thereby increasing the connection strength between the reinforcing blocks and the bearing chamber. Then, the clamping member is installed. Threads are opened on the first threaded connection portion of the connecting ring, and at the same time, the clamping block is welded to the outer wall of the connecting ring; then the bearing chamber and the mounting seat are connected. First, the mounting seat is placed vertically, the rotating block is fixed through the connection holes on the connecting portions on both sides of the mounting seat, and a limiting rod is installed on the connecting portion at the top of the mounting seat. Then the mounting seat is placed into the notch of the assembly table, and at the same time, the curved surface on the mounting seat faces the transverse moving frame on one side of the assembly table. The transmission gear on the rotating block meshes with the tooth rails on both sides of the assembly table. Then the bearing chamber is installed on the transverse moving frame through the adjusting rod, and the transverse moving frame is driven to move towards the mounting seat side, so that the reinforcing blocks are closely attached to the curved surface of the mounting seat. Then, spot welding is performed at the joint between the curved surface and the reinforcing blocks, thereby fixing the bearing chamber and the mounting seat. Then, the transverse moving frame is driven back to the initial position, and then the adjusting rod is removed. Then, full welding is performed at the joint between the curved surface and the reinforcing blocks. By providing the transverse moving frame, it is avoided that the bearing chamber shakes when moving horizontally towards the mounting seat side, resulting in the non-concentricity between the bearing chamber and the mounting seat, thereby improving the installation precision between the bearing chamber and the mounting seat. Since the bearing chamber is used to install the bearing on the motor shaft, the improvement of the installation precision of the bearing chamber reduces the friction between the motor shaft and the bearing, thereby increasing the service life of the motor;After the mounting base is flipped 180°, the clamping piece is installed. First, the top-push cylinder is used to drive the toothed rail to move to the other side of the assembly table. The movement of the toothed rail drives the transmission gear to rotate, thereby driving the mounting base to rotate. The mounting base rotates 180°, which facilitates the installation of the clamping piece. And after the mounting base is flipped 180°, its central position remains unchanged, which facilitates the adjustment and installation of the clamping piece. At the same time, the clamping piece is installed on the adjusting rod, the adjusting rod is installed on the transverse moving frame, the transverse moving frame is driven to move towards the mounting base, and the connecting ring in the clamping piece is driven to rotate by the adjusting rod, so that the first threaded connection part on the connecting ring is screwed into the connecting groove of the bearing chamber, thus completing the installation of the end cover. The setting of the first threaded connection part and the connecting groove facilitates the fixation of the connecting ring and the bearing chamber. After the connecting ring and the bearing chamber are fixed, their joint is welded, which avoids manually holding the connecting ring for welding, and the connecting ring does not shake during the welding process, improving the welding stability between the connecting ring and the bearing chamber; Finally, the assembled motor end cover is taken out from the notch of the assembly table, and then the rotating block and the limiting rod are removed, thus completing the manufacture of the motor end cover.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A pressure-resistant motor end cover, including a body, the body includes a bearing chamber and a mounting base, and is characterized in that: a mounting hole is provided in the center of the mounting base, the bearing chamber is located above the mounting hole, the bearing chamber includes a cylindrical cavity and a bearing hole, the bearing hole is provided at the top of the cavity, the bearing hole and the mounting hole are concentrically arranged, and a reinforcing component is also circumferentially distributed on the outer side wall of the bearing chamber, and the reinforcing component is fixedly connected to the mounting base. By setting the bearing chamber and the mounting base in the present invention, a mounting hole is opened in the center of the mounting base, the diameter of the mounting hole is larger than the diameter of the bearing chamber, the bearing chamber is arranged above the mounting hole, and a reinforcing component is installed between the outer side wall of the bearing chamber and the mounting base. The setting of the reinforcing component increases the structural strength of the connection between the bearing chamber and the mounting base, thereby increasing the pressure-resistant capacity of the motor, avoiding damage to the motor, and thus increasing the service life of the motor.

[0007] Furthermore, the mounting base is provided with a curved surface, the mounting hole is provided in the center of the curved surface, and heat dissipation holes are circumferentially distributed on the outer wall of the mounting base. The heat dissipation holes play a role in dissipating heat from the motor. The curved surface is recessed downward from the outside of the mounting base towards the center of the mounting hole. The setting of the curved surface facilitates the installation of the bearing chamber, avoids the bearing chamber protruding too much from the mounting base, can play a protective role for the bearing chamber, and the setting of the curved surface also increases the fitting area between the curved surface and the reinforcing component, thereby increasing the connection strength between the curved surface and the reinforcing component.

[0008] Furthermore, a connecting portion extending outward is provided at the bottom of the mounting seat, and a reinforcing rib is provided at the top of the connecting portion, and the reinforcing rib is closely attached to the outer wall of the mounting seat. The arrangement of the connecting portion increases the area of ​​connection between the mounting seat and the motor, thereby improving the stability of the connection between the mounting seat and the motor, and the arrangement of the reinforcing rib increases the structural strength between the mounting seat and the connecting portion.

[0009] Furthermore, the connection part is provided with connection blocks distributed around the circumference, and a triangular reinforcement block is provided between the connection block and the inner wall of the corresponding heat dissipation hole. The connection block is used to connect the mounting seat with the motor, and the provision of the triangular reinforcement block increases the structural strength between the connection block and the connection part.

[0010] Furthermore, the reinforcement assembly includes a reinforcement block, a track ring and a clamping piece. The track ring passes through the reinforcement block. A clamping block is slidably connected to the track ring. The clamping blocks are tightly attached to both sides of the reinforcement block. One end of the reinforcement block is welded to the outer wall of the bearing chamber. The bottom of the other end of the reinforcement block is welded to the mounting seat. The clamping piece is fixedly connected to the bottom of the bearing chamber, and the clamping piece is against the bottom of the top surface of the mounting seat. The track ring passes through the reinforcement block. The track ring and the reinforcement block are arranged in a ring shape. The clamping block fixes the reinforcement block on the track ring and makes the reinforcement block evenly distributed on the outside of the bearing chamber, thereby avoiding the shaking phenomenon when the reinforcement block is welded to the bearing chamber. The even distribution of the reinforcement blocks not only plays an aesthetic role, but also makes the bearing chamber evenly stressed after being connected to the mounting seat, thereby improving the service life of the motor end cover.

[0011] Furthermore, the track ring is provided with a slide groove, and the clamping block is provided with a slider corresponding to the slide groove, the slider is slidably connected in the slide groove, and a fastening screw is provided on the top of the clamping block, and the fastening screw is tightened on the track ring. The slider and the slide groove are provided to facilitate the clamping block to move on the track ring, and the fastening screw is used to fix the clamping block on the track ring.

[0012] Furthermore, the clamping member includes a connecting ring and a clamping block. The clamping block is circumferentially distributed on the outside of the connecting ring. The clamping block is welded to the connecting ring. The top of the clamping block abuts against the bottom of the top surface of the mounting seat. The top of the connecting ring is provided with a first threaded connection portion protruding upward. The bottom of the bearing chamber is correspondingly provided with a connecting groove. The connecting groove is provided with an internal thread. The internal thread matches the first threaded connection portion. The first threaded connection portion is threadedly connected in the connecting groove. The provision of the first threaded connection portion and the connecting groove facilitates the fixed connection between the connecting ring and the bearing chamber. The reinforcement block and the clamping block clamp the upper and lower sides of the top surface of the mounting seat respectively, thereby improving the connection strength between the bearing chamber and the mounting seat, thereby increasing the pressure resistance of the motor end cover.

[0013] A method for manufacturing a pressure-resistant motor end cover, characterized by comprising the following steps:

[0014] aPreliminary preparation

[0015] 1) Semi-finished product manufacturing of bearing housing and mounting seat

[0016] First, according to the size of the motor, confirm the corresponding sizes of the bearing housing, connecting ring and mounting seat. Then, make a stretching die according to the sizes of the bearing housing and mounting seat. Next, make the sheet metal into a disc, fix the disc on the stretching die and perform stretching, so as to obtain the semi-finished products of the bearing housing, connecting ring and mounting seat;

[0017] 2) Machining of bearing housing and mounting seat

[0018] First, drill a bearing hole at the top of the cavity inside the semi-finished bearing housing and tap an internal thread in the connecting groove. Then, drill a mounting hole at the center of the semi-finished mounting seat, drill heat dissipation holes on the outer wall circumference of the mounting seat. Next, weld triangular reinforcing blocks between the connecting block and the inner wall of the corresponding heat dissipation holes, and at the same time drill connecting holes for connecting with the motor on the connecting block;

[0019] b. Assembly of bearing housing and clamping parts

[0020] 1) Connection of reinforcement component and bearing housing

[0021] First, insert the first clamping block from the notch of the track ring. Then, move the clamping block to the appropriate position and fix it on the track ring with fastening screws. Next, insert the first reinforcement block from the notch of the track ring. One side of the reinforcement block is closely attached to the clamping block. Then, insert the second clamping block from the notch of the track ring. The second clamping block is closely attached to the other side of the reinforcement block. Tighten the fastening screws of the second clamping block on the track ring, so as to fix the reinforcement block on the track ring. According to the installation method of the first reinforcement block, fix the remaining reinforcement blocks on the track ring. Then, weld the notch of the track ring to make the track ring closed. Due to the setting of the track ring, one end of the reinforcement block is surrounded in a ring shape to match the outer wall of the bearing housing. Then, place the bearing housing into it and weld between the bearing housing and the reinforcement block;

[0022] 2) Installation of clamping parts

[0023] First, tap a thread on the first threaded connection part at the top of the connecting ring of the semi-finished product. Then, weld the clamping block on the outer wall of the connecting ring, so as to complete the installation of the clamping;

[0024] c. Connection between bearing housing and mounting seat

[0025] 1) Placement of mounting seat

[0026] First, stand up the horizontally placed mounting base so that it is placed vertically. Then, fix the rotating blocks on the connecting blocks on both sides of the vertically placed mounting base through the connecting holes. A transmission gear is fixed at one end of the rotating block away from the mounting base. Next, fix the limiting rod on the connecting block at the top of the vertically placed mounting base through the connecting hole. Then, place the mounting base into the assembly table through the notch, so that the transmission gears on both sides mesh with the tooth rails on both sides of the assembly table, and the limiting rod is clamped in the top limiting clip on the inner wall of the assembly table, making the curved surface on the mounting base face the cross-moving frame on one side of the assembly table;

[0027] 2) Placement of the bearing housing

[0028] The adjusting rod passes through the bearing hole of the bearing housing. The limiting block at one end of the adjusting rod is engaged in the cavity. A centering hole is provided in the center of the limiting block. A first nut is screwed onto the adjusting rod, and one side of the first nut is tightened on the bearing housing. The adjusting rod passes through the adjusting hole on the cross-moving frame, and the other side of the first nut is closely attached to one side of the cross-moving frame. A second nut is screwed onto the adjusting rod, and the second nut is tightened on the other side of the cross-moving frame;

[0029] 3) Assembly of the bearing housing and the mounting base

[0030] First, move the cross-moving frame towards one side of the mounting base so that the reinforcing blocks on the outer circumference of the bearing housing are closely attached to the curved surface of the mounting base. Then, perform spot welding at the joint where the curved surface and the reinforcing block are in contact, so that the bearing housing is fixed on the mounting base. Then, loosen the second nut so that the cross-moving frame moves back to the initial position. Next, loosen the first nut, remove the adjusting rod from the other side of the assembly table, and then perform full welding at the joint where the curved surface and the reinforcing block are in contact;

[0031] d. Flipping of the mounting base

[0032] First, pull the tooth rail towards the other side of the assembly table through the push cylinder on the assembly table, thereby driving the transmission gear to rotate. The transmission gear drives the mounting base to flip, so that the limiting rod is clamped in the bottom limiting clip on the inner wall of the assembly table. The mounting base flips 180°. The curved surface of the mounting base faces the side of the assembly table away from the cross-moving frame. At the same time, install the clamping member onto the adjusting rod and install the adjusting rod onto the cross-moving frame;

[0033] e. Installation of the clamping member

[0034] First, move the cross - slide frame to one side of the mounting base, so that the clamping blocks on the outer circumference of the connecting ring are closely attached to the mounting base. At the same time, the first threaded connection part on the connecting ring abuts against the connecting groove. Then, rotate the adjusting rod, so that the adjusting rod drives the connecting ring to rotate, and the first threaded connection part is screwed into the connecting groove, thereby fixing the connecting ring on the bearing chamber. Then, move the cross - slide frame back to the initial position, remove the adjusting rod, and then weld the joint between the bearing chamber and the connecting ring. Then, take out the assembled motor end - cover from the notch of the assembly table, and then remove the rotating block and the limiting rod, thus completing the manufacturing of the motor end - cover.

[0035] Further, a fixing frame is installed on the other side of the assembly table. A centering rod is movably connected to the fixing frame. The centering rod is concentrically arranged with the mounting hole. A third nut is threadedly connected to the centering rod, and the third nut is tightened on both sides of the fixing frame. A centering hole corresponding to the centering rod is provided on the limiting block at one end of the adjusting rod. When the cross - slide frame moves towards one side of the mounting base, loosen the third nut, drive the centering rod to move towards one side of the cross - slide frame, and adjust the height of the adjusting rod through the adjusting hole on the cross - slide frame, so that the centering rod is inserted into the centering hole of the limiting block, thereby ensuring that the adjusting rod is concentric with the mounting base, and making the bearing chamber and the clamping parts installed on the adjusting rod concentric with the mounting base. The setting of the centering rod and the centering hole enables the center of the bearing chamber and the clamping parts to be aligned with the center of the mounting base during installation, and during the process of the cross - slide frame moving the bearing chamber and the clamping parts, the centers of the bearing chamber and the clamping parts will not shift, thereby improving the connection accuracy between the bearing chamber and the clamping parts and the mounting base respectively.

[0036] Further, the connection steps between the adjusting rod and the clamping part are specifically as follows: First, pass the adjusting rod through the clamping ring, so that the limiting block at one end of the adjusting rod abuts against one side of the clamping ring. Then, screw in the first nut, so that one side of the first nut is tightened on the other side of the clamping ring. Then, pass the other end of the adjusting rod through the adjusting hole on the cross - slide frame, and the other side of the first nut is closely attached to one side of the cross - slide frame. Then, screw in the second nut at the other end of the adjusting rod, so that the second nut is tightened on the other side of the cross - slide frame. Then, fix the clamping part to the clamping ring, the clamping ring abuts against the connecting ring, and the clamping blocks on the clamping ring are clamped on both sides of the clamping block. Then, turn the tightening screw on the clamping block, and the tightening screw presses against the clamping block. The connecting ring and the adjusting rod are fixed through the clamping blocks on the clamping ring. At the same time, rotating the adjusting rod can drive the connecting ring to rotate synchronously, thereby fixing the connecting ring and the bearing chamber. When disassembling the adjusting rod, just loosen the tightening screw on the clamping block first, realizing the convenient and fast disassembly and assembly of the adjusting rod and the clamping part.

[0037] Due to the adoption of the above - mentioned technical solutions, the present invention has the following beneficial effects:

[0038] The present invention arranges a bearing chamber and a mounting seat, opens a mounting hole in the center of the mounting seat, the diameter of the mounting hole is larger than the diameter of the bearing chamber, arranges the bearing chamber above the mounting hole, and installs a reinforcement component between the outer wall of the bearing chamber and the mounting seat. The arrangement of the reinforcement component increases the structural strength of the connection between the bearing chamber and the mounting seat, thereby increasing the pressure resistance of the motor, avoiding damage to the motor, and thus increasing the service life of the motor.

[0039] The reinforcement assembly in the present invention includes a reinforcement block, a track ring and a clamping piece. The track ring passes through the reinforcement block. A clamping block is slidably connected to the track ring. The clamping blocks are tightly attached to both sides of the reinforcement block. One end of the reinforcement block is welded to the outer wall of the bearing chamber. The bottom of the other end of the reinforcement block is welded to the mounting seat. The clamping piece is fixedly connected to the bottom of the bearing chamber, and the clamping piece is against the bottom of the top surface of the mounting seat. The track ring passes through the reinforcement block. The track ring and the reinforcement block are arranged in a ring shape. The clamping block fixes the reinforcement block on the track ring and makes the reinforcement block evenly distributed on the outside of the bearing chamber, thereby avoiding the shaking phenomenon when the reinforcement block is welded to the bearing chamber. The even distribution of the reinforcement blocks not only plays an aesthetic role, but also makes the bearing chamber evenly stressed after being connected to the mounting seat, thereby improving the service life of the motor end cover.

[0040] In step b of the present invention, the bearing chamber is first connected to the reinforcement assembly by setting a track ring and a clamping block. The track ring is used to set the reinforcement block into a ring shape so that the reinforcement block is circumferentially distributed on the outside of the bearing chamber. The setting of the clamping block fixes the reinforcement block on the track ring so that the reinforcement block will not shake when it is welded to the outer wall of the bearing chamber, thereby improving the welding accuracy between the bearing chamber and the reinforcement block and avoiding the occurrence of cold welding when welding the bearing chamber and the reinforcement block, thereby increasing the connection strength between the reinforcement block and the bearing chamber.

[0041] In step c of the present invention, first place the mounting seat vertically, fix the rotating block through the connecting holes on the connecting parts on both sides of the mounting seat, install the limiting rod on the connecting part at the top of the mounting seat, then place the mounting seat through the notch of the assembly table. At the same time, the curved surface on the mounting seat faces the cross-moving frame on one side of the assembly table. The transmission gear on the rotating block meshes with the tooth rails on both sides of the assembly table. Then install the bearing chamber on the cross-moving frame through the adjusting rod, drive the cross-moving frame to move towards the mounting seat side, so that the reinforcing block closely adheres to the curved surface of the mounting seat. Then, spot weld at the joint where the curved surface and the reinforcing block are in contact, thereby fixing the bearing chamber and the mounting seat. Then drive the cross-moving frame back to the initial position, and then remove the adjusting rod. Then, fully weld the joint where the curved surface and the reinforcing block are in contact. By setting the cross-moving frame, it avoids the shaking phenomenon when the bearing chamber moves horizontally towards the mounting seat side, resulting in the non-concentricity between the bearing chamber and the mounting seat, thereby improving the installation accuracy between the bearing chamber and the mounting seat. Since the bearing chamber is used to install the bearing on the motor shaft, the improvement of the installation accuracy of the bearing chamber reduces the friction between the motor shaft and the bearing, thereby increasing the service life of the motor.

[0042] In step d of the present invention, after flipping the mounting seat by 180°, install the clamping member. First, drive the tooth rail to move towards the other side of the assembly table through the push cylinder. The movement of the tooth rail drives the transmission gear to rotate, thereby driving the mounting seat to rotate. The mounting seat rotates 180°, which facilitates the installation of the clamping member. And after the mounting seat is flipped by 180°, its central position does not change, which facilitates the adjustment and installation of the clamping member. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The present invention will be further described below with reference to the drawings:

[0044] Figure 1 is a schematic structural diagram of a range hood according to the present invention;

[0045] Figure 2 is a schematic structural diagram of the bottom of the connection between the bearing chamber and the reinforcement assembly according to the present invention;

[0046] Figure 3 is a schematic structural diagram of the clamping member according to the present invention;

[0047] Figure 4 is a schematic structural diagram of the connection between the mounting seat, the limiting rod and the rotating block according to the present invention;

[0048] Figure 5 is a schematic structural diagram of the assembly table according to the present invention;

[0049] Figure 6 is a schematic structural diagram of the present invention when the bearing chamber is ready to be installed on the mounting seat;

[0050] Figure 7 is a schematic structural diagram of the reinforcing block closely adhering to the curved surface according to the present invention;

[0051] Figure 8 This is a schematic structural view when the mounting base in the present invention is flipped by 180° and ready to install the clamping member.

[0052] Figure 9 This is a schematic structural view of the connection between the clamping member and the adjusting member in the present invention.

[0053] In the figure, 1 - body; 2 - bearing chamber; 3 - mounting base; 4 - mounting hole; 5 - cavity; 6 - bearing hole; 7 - reinforcement assembly; 8 - curved surface; 9 - heat dissipation hole; 10 - connecting portion; 11 - reinforcing rib; 12 - connecting block; 13 - triangular reinforcing block; 14 - reinforcing block; 15 - track ring; 16 - clamping member; 17 - sliding groove; 18 - slider; 19 - connecting ring; 20 - clamping block; 21 - first threaded connection portion; 22 - connecting groove; 23 - rotating block; 24 - transmission gear; 25 - connecting hole; 26 - limiting rod; 27 - top limiting clip; 28 - transverse moving frame; 29 - adjusting rod; 30 - limiting block; 31 - centering hole; 32 - first nut; 33 - adjusting hole; 34 - second nut; 35 - push cylinder; 36 - toothed rail; 37 - bottom limiting clip; 38 - fixing frame; 39 - centering rod; 40 - third nut; 41 - clamping ring; 42 - clamping block; 43 - clamping piece; 44 - notch of the assembly table; 45 - assembly table. Detailed implementation manner

[0054] As Figures 1 to 3 shown, a pressure-resistant motor end cover of the present invention includes a body 1, the body 1 includes a bearing chamber 2 and a mounting base 3, a mounting hole 4 is provided at the center of the mounting base 3, the bearing chamber 2 is located above the mounting hole 4, the bearing chamber 2 includes a cylindrical cavity 5 and a bearing hole 6, the bearing hole 6 is provided at the top of the cavity 5, the bearing hole 6 and the mounting hole 4 are concentrically arranged, and a reinforcement assembly 7 is also circumferentially distributed on the outer side wall of the bearing chamber 2, and the reinforcement assembly 7 is fixedly connected to the mounting base 3.

[0055] The mounting base 3 is provided with a curved surface 8, the mounting hole 4 is provided at the center of the curved surface 8, and heat dissipation holes 9 are circumferentially distributed on the outer wall of the mounting base 3. The heat dissipation holes 9 play a role in dissipating heat from the motor. The curved surface 8 is recessed downward from the outside of the mounting base 3 towards the center of the mounting hole 4. The setting of the curved surface 8 facilitates the installation of the bearing chamber 2, avoids the bearing chamber 2 protruding too much from the mounting base 3, can play a protective role for the bearing chamber 2, and the setting of the curved surface 8 also increases the fitting area between the curved surface 8 and the reinforcement assembly 7, thereby increasing the connection strength between the curved surface 8 and the reinforcement assembly 7.

[0056] The bottom of the mounting seat 3 is provided with a connecting portion 10 extending outward, and the top of the connecting portion 10 is provided with a reinforcing rib 11, which is close to the outer wall of the mounting seat 3. The setting of the connecting portion 10 increases the connection area between the mounting seat 3 and the motor, thereby improving the stability of the connection between the mounting seat 3 and the motor, and the setting of the reinforcing rib 11 increases the structural strength between the mounting seat 3 and the connecting portion 10.

[0057] The connection part 10 is provided with connection blocks 12 distributed around the circumference, and a triangular reinforcement block 13 is provided between the connection block 12 and the inner wall of the corresponding heat dissipation hole 9. The connection block 12 is provided for connecting the mounting seat 3 with the motor, and the provision of the triangular reinforcement block 13 increases the structural strength between the connection block 12 and the connection part 10.

[0058] The reinforcement assembly 7 includes a reinforcement block 14, a track ring 15 and a clamping piece 16. The track ring 15 passes through the reinforcement block 14. A clamping piece 43 is slidably connected to the track ring 15. The clamping piece 43 is tightly attached to both sides of the reinforcement block 14. One end of the reinforcement block 14 is welded to the outer wall of the bearing chamber 2. The bottom of the other end of the reinforcement block 14 is welded to the mounting seat 3. The clamping piece 16 is fixedly connected to the bottom of the bearing chamber 2. The clamping piece 16 is against the bottom of the top surface of the mounting seat 3. The track ring 15 passes through the reinforcement block 14. The track ring 15 and the reinforcement block 14 are arranged in a ring shape. The clamping piece 43 fixes the reinforcement block 14 on the track ring 15 and makes the reinforcement block 14 evenly distributed on the outer side of the bearing chamber 2, thereby avoiding the shaking phenomenon when the reinforcement block 14 is welded to the bearing chamber 2. The uniform distribution of the reinforcement block 14 not only plays a role in aesthetics, but also makes the bearing chamber 2 evenly stressed after being connected to the mounting seat 3, thereby improving the service life of the motor end cover.

[0059] The track ring 15 is provided with a slide groove 17, and the clamping block 43 is provided with a slider 18 correspondingly, and the slider 18 is slidably connected in the slide groove 17. The top of the clamping block 43 is provided with a fastening screw, and the fastening screw is tightened on the track ring 15. The slider 18 and the slide groove 17 are arranged to facilitate the clamping block 43 to move on the track ring 15, and the fastening screw is used to fix the clamping block 43 on the track ring 15.

[0060] The clamping member 16 includes a connecting ring 19 and clamping blocks 20. The clamping blocks 20 are circumferentially distributed on the outer side of the connecting ring 19. The clamping blocks 20 are welded to the connecting ring 19. The top of the clamping blocks 20 abuts against the bottom of the top surface of the mounting seat 3. The top of the connecting ring 19 is provided with a first threaded connecting portion 21 protruding upward. The bottom of the bearing housing 2 is correspondingly provided with a connecting groove 22. An internal thread is provided in the connecting groove 22, and the internal thread matches the first threaded connecting portion 21. The first threaded connecting portion 21 is threadedly connected in the connecting groove 22. The arrangement of the first threaded connecting portion 21 and the connecting groove 22 facilitates the fixed connection between the connecting ring 19 and the bearing housing 2. The reinforcing block 14 and the clamping blocks 20 respectively clamp the upper and lower sides of the top surface of the mounting seat 3, thereby improving the connection strength between the bearing housing 2 and the mounting seat 3, and thus increasing the pressure resistance of the motor end cover.

[0061] As Figures 4 to 9 shown, a manufacturing method of a pressure-resistant motor end cover according to the present invention is characterized by including the following steps:

[0062] a. Preliminary preparation

[0063] 1) Fabrication of semi-finished products of the bearing housing 2 and the mounting seat 3

[0064] First, according to the size of the motor, confirm the corresponding sizes of the bearing housing 2, the connecting ring 19 and the mounting seat 3. Then, fabricate a stretching die according to the sizes of the bearing housing 2 and the mounting seat 3. Next, make a disc from the sheet material, fix the disc on the stretching die and perform stretching, thereby fabricating semi-finished products of the bearing housing 2, the connecting ring 19 and the mounting seat 3;

[0065] 2) Machining of the bearing housing 2 and the mounting seat 3

[0066] First, open a bearing hole 6 at the top of the cavity 5 inside the semi-finished product of the bearing housing 2, and open an internal thread in the connecting groove 22. Then, open a mounting hole 4 at the center of the semi-finished product of the mounting seat 3, open heat dissipation holes on the outer wall circumference of the mounting seat 3. Then, weld triangular reinforcing blocks 13 between the connecting block 12 and the inner walls of the corresponding heat dissipation holes 9, and at the same time, open connecting holes for connecting with the motor on the connecting block 12;

[0067] b. Assembly of the bearing housing 2 and the clamping member 16

[0068] 1) Connection of the reinforcing component 7 and the bearing housing 2

[0069] First, load the first clamping block 43 from the notch of the track ring 15. Then, move the clamping block 43 to a suitable position and fix it on the track ring 15 with a fastening screw. Next, load the first reinforcing block 14 from the notch of the track ring 15. One side of the reinforcing block 14 is closely attached to the clamping block 43. Then, load the second clamping block 43 from the notch of the track ring 15. The second clamping block 43 is closely attached to the other side of the reinforcing block 14. Tighten the fastening screw of the second clamping block 43 on the track ring 15, thereby fixing the reinforcing block 14 on the track ring 15. According to the installation method of the first reinforcing block 14, fix the remaining reinforcing blocks 14 on the track ring 15. Then, weld the notch of the track ring 15 to make the track ring 15 closed. Due to the setting of the track ring 15, one end of the reinforcing block 14 is formed into a ring shape to match the outer wall of the bearing chamber 2. Then, place the bearing chamber 2 into it and weld between the bearing chamber 2 and the reinforcing block 14;

[0070] 2) Installation of the clamping member 16

[0071] First, thread is cut on the first threaded connection part 21 at the top of the connecting ring 19 of the semi-finished product, and then the clamping block 20 is welded on the outer wall of the connecting ring 19, thus completing the installation of the clamping;

[0072] c. Connection between the bearing chamber 2 and the mounting seat 3

[0073] 1) Placement of the mounting seat 3

[0074] First, stand up the horizontally placed mounting seat 3 so that the mounting seat 3 is placed vertically. Then, fix the rotating block 23 on the connecting blocks 12 on both sides of the vertically placed mounting seat 3 through the connection holes 25. A transmission gear 24 is fixed at one end of the rotating block 23 away from the mounting seat 3. Then, fix the limiting rod 26 on the connecting block 12 at the top of the vertically placed mounting seat 3 through the connection holes 25. Then, place the mounting seat 3 into the assembly table from the notch 44 of the assembly table, so that the transmission gears 24 on both sides are engaged with the tooth rails 36 on both sides of the assembly table 45, and the limiting rod 26 is clamped in the top limiting clip 27 on the inner wall of the assembly table 45, so that the curved surface 8 on the mounting seat 3 faces the transverse moving frame 28 on one side of the assembly table 45;

[0075] 2) Placement of the bearing chamber 2

[0076] The adjusting rod 29 passes through the bearing hole 6 of the bearing chamber 2. The limiting block at one end of the adjusting rod 29 is engaged in the cavity 5. A centering hole 31 is provided at the center of the limiting block 30. A first nut 32 is screwed on the adjusting rod 29. One side of the first nut 32 is tightened on the bearing chamber 2. The adjusting rod 29 passes through the adjusting hole 33 on the transverse moving frame 28. The other side of the first nut 32 is closely attached to one side of the transverse moving frame 28. A second nut 34 is screwed on the adjusting rod 29. The second nut 34 is tightened on the other side of the transverse moving frame 28;

[0077] 3) Assembly of the bearing housing 2 and the mounting base 3

[0078] First, move the cross - slide 28 to one side of the mounting base 3 so that the reinforcement block 14 on the outer circumference of the bearing housing 2 closely adheres to the curved surface 8 of the mounting base 3. Then, perform spot welding at the joint where the curved surface 8 and the reinforcement block 14 are in contact, so that the bearing housing 2 is fixed to the mounting base 3. Then, loosen the second nut 34 to make the cross - slide 28 move back to its initial position. Next, loosen the first nut 32 and remove the adjusting rod 29 from the other side of the assembly table 45. Then, perform full - scale welding on the joint where the curved surface 8 and the reinforcement block 14 are in contact;

[0079] d. Flipping of the mounting base 3

[0080] First, use the push - pull cylinder 35 on the assembly table 45 to pull the toothed rail 36 to move to the other side of the assembly table 45, thereby driving the transmission gear 24 to rotate. The transmission gear 24 drives the mounting base 3 to flip, so that the limit rod 26 is clamped in the bottom limit clip 37 on the inner wall of the assembly table 45. The mounting base 3 flips 180°. The curved surface 8 of the mounting base 3 faces the side of the assembly table 45 away from the cross - slide 28. At the same time, install the clamping member 16 on the adjusting rod 29 and install the adjusting rod 29 on the cross - slide 28;

[0081] e. Installation of the clamping member 16

[0082] First, move the cross - slide 28 to one side of the mounting base 3 so that the clamping block 20 on the outer circumference of the connecting ring 19 closely adheres to the mounting base 3. At the same time, the first threaded connection part 21 on the connecting ring 19 abuts against the connecting groove 22. Then, rotate the adjusting rod 29 so that the adjusting rod 29 drives the connecting ring 19 to rotate, and the first threaded connection part 21 is screwed into the connecting groove 22, so that the connecting ring 19 is fixed to the bearing housing 2. Then, move the cross - slide 28 back to its initial position, remove the adjusting rod 29. Next, weld the joint where the bearing housing 2 and the connecting ring 19 are in contact. Then, take out the assembled motor end - cover from the notch 44 of the assembly table 45. Then, remove the rotating block 23 and the limit rod 26, thus completing the manufacture of the motor end - cover.

[0083] On the other side of the assembly table 45, a fixing frame 38 is installed. A centering rod 39 is movably connected to the fixing frame 38. The centering rod 39 is concentrically arranged with the mounting hole 4. A third nut 40 is threadedly connected to the centering rod 39. The third nut 40 is tightened on both sides of the fixing frame 38. A centering hole 31 corresponding to the centering rod 39 is provided on the limiting block 30 at one end of the adjusting rod 29. When the transverse moving frame 28 moves towards the mounting seat 3, loosen the third nut 40, drive the centering rod 39 to move towards one side of the transverse moving frame 28, and adjust the height of the adjusting rod 29 through the adjusting hole 33 on the transverse moving frame 28, so that the centering rod 39 is inserted into the centering hole 31 of the limiting block 30, thereby ensuring that the adjusting rod 29 is concentric with the mounting seat 3, and making the bearing housing 2 and the clamping member 16 installed on the adjusting rod 29 concentric with the mounting seat 3. The setting of the centering rod 39 and the centering hole 31 enables the centers of the bearing housing 2 and the clamping member 16 to be aligned with the center of the mounting seat 3 during installation, and during the process of the transverse moving frame 28 moving the bearing housing 2 and the clamping member 16, the centers of the bearing housing 2 and the clamping member 16 will not shift, thereby improving the connection accuracy between the bearing housing 2 and the clamping member 16 and the mounting seat 3 respectively.

[0084] The connection steps of the adjusting rod 29 and the clamping member 16 are specifically as follows: First, pass the adjusting rod 29 through the clamping ring 41, so that the limiting block 30 at one end of the adjusting rod 29 abuts against one side of the clamping ring 41, and then screw in the first nut 32, so that one side of the first nut 32 is tightened on the other side of the clamping ring 41. Then, pass the other end of the adjusting rod 29 through the adjusting hole 33 on the transverse moving frame 28, and the other side of the first nut 32 is closely attached to one side of the transverse moving frame 28. Then, screw in the second nut 34 at the other end of the adjusting rod 29, so that the second nut 34 is tightened on the other side of the transverse moving frame 28. Then, fix the clamping member 16 to the clamping ring 41. The clamping ring 41 abuts against the connecting ring 19, and the clamping blocks 42 on the clamping ring 41 are clamped on both sides of the clamping block 20. Then, turn the tightening screw on the clamping block 42, and the tightening screw abuts against the clamping block 20. The connecting ring 19 and the adjusting rod 29 are fixed through the clamping blocks 42 on the clamping ring 41. At the same time, rotating the adjusting rod 29 can drive the connecting ring 19 to rotate synchronously, thereby fixing the connecting ring 19 to the bearing housing 2. When disassembling the adjusting rod 29, just loosen the tightening screw on the clamping block 42 first, realizing the convenient and fast disassembly and assembly of the adjusting rod 29 and the clamping member 16.

[0085] In the present invention, by providing the bearing housing 2 and the mounting seat 3, a mounting hole 4 is opened at the center of the mounting seat 3. The diameter of the mounting hole 4 is larger than the diameter of the bearing housing 2. The bearing housing 2 is arranged above the mounting hole 4. A reinforcing component 7 is installed between the outer side wall of the bearing housing 2 and the mounting seat 3. The setting of the reinforcing component 7 increases the structural strength of the connection between the bearing housing 2 and the mounting seat 3, thereby increasing the pressure resistance of the motor, avoiding damage to the motor, and thus increasing the service life of the motor.

[0086] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made based on the present invention to solve substantially the same technical problems and achieve substantially the same technical effects are all covered by the protection scope of the present invention.

Claims

1. A manufacturing method of a voltage-resistant motor end cover, the motor end cover includes a body, the body includes a bearing chamber and a mounting seat, a mounting hole is provided at the center of the mounting seat, the bearing chamber is located above the mounting hole, the bearing chamber includes a cylindrical cavity and a bearing hole, the bearing hole is provided at the top of the cavity, the bearing hole and the mounting hole are concentrically arranged, and a reinforcing component is also circumferentially distributed on the outer side wall of the bearing chamber, and the reinforcing component is fixedly connected to the mounting seat; It is characterized in that This manufacturing method includes the following steps: a. Preliminary preparation 1) Fabrication of semi-finished products of the bearing chamber and the mounting seat First, according to the size of the motor, confirm the corresponding sizes of the bearing chamber, the connecting ring and the mounting seat, then make a stretching die according to the sizes of the bearing chamber and the mounting seat, and then form a disc from the sheet metal, fix the disc on the stretching die and perform stretching, so as to fabricate semi-finished products of the bearing chamber, the connecting ring and the mounting seat; 2) Machining of the bearing chamber and the mounting seat First, drill a bearing hole at the top of the cavity inside the semi-finished bearing chamber, and tap internal threads in the connecting groove, then drill a mounting hole at the center of the semi-finished mounting seat, drill heat dissipation holes on the outer circumferential wall of the mounting seat, then weld triangular reinforcing blocks between the connecting blocks and the inner walls of the corresponding heat dissipation holes, and at the same time drill connecting holes for connecting with the motor on the connecting blocks; b. Assembly of the bearing chamber and the clamping member 1) Connection of the reinforcing component and the bearing chamber First, insert the first clamping block from the notch of the track ring, then move the clamping block to a suitable position and fix it on the track ring with a fastening screw, then insert the first reinforcing block from the notch of the track ring, one side of the reinforcing block is close to the clamping block, then insert the second clamping block from the notch of the track ring, the second clamping block is close to the other side of the reinforcing block, and tighten the fastening screw of the second clamping block on the track ring, so as to fix the reinforcing block on the track ring. According to the installation method of the first reinforcing block, fix the remaining reinforcing blocks on the track ring, and then weld the notch of the track ring to make the track ring closed. Due to the setting of the track ring, one end of the reinforcing block is arranged in a ring shape to match the outer wall of the bearing chamber, and then place the bearing chamber into it, and weld between the bearing chamber and the reinforcing block; 2) Installation of the clamping member First, tap threads on the first threaded connection part at the top of the connecting ring of the semi-finished product, and then weld the clamping block on the outer wall of the connecting ring, so as to complete the installation of the clamping; c. Connection between the bearing chamber and the mounting seat 1) Placement of the mounting seat First, stand up the horizontally placed mounting seat so that the mounting seat is placed vertically, then fix the rotating blocks on the connecting blocks on both sides of the vertically placed mounting seat through the connecting holes, a transmission gear is fixed at the end of the rotating block away from the mounting seat, then fix the limiting rod on the connecting block at the top of the vertically placed mounting seat through the connecting hole, and then place the mounting seat into the assembly table from the notch, so that the transmission gears on both sides mesh with the tooth rails on both sides of the assembly table, and the limiting rod is clamped in the top limiting clip on the inner wall of the assembly table, so that the curved surface on the mounting seat faces the transverse moving frame on one side of the assembly table; 2) Placement of the bearing chamber The adjusting rod passes through the bearing hole of the bearing chamber. The limiting block at one end of the adjusting rod is clamped inside the cavity. A centering hole is provided at the center of the limiting block. A first nut is screwed onto the adjusting rod. One side of the first nut is tightened against the bearing chamber. The adjusting rod passes through the adjusting hole on the transverse movement frame. The other side of the first nut is closely attached to one side of the transverse movement frame. A second nut is screwed onto the adjusting rod, and the second nut is tightened on the other side of the transverse movement frame; 3) Assembly of the bearing chamber and the mounting seat First, move the transverse movement frame towards one side of the mounting seat so that the reinforcing block on the outer circumference of the bearing chamber closely adheres to the curved surface of the mounting seat. Then, perform spot welding at the joint where the curved surface and the reinforcing block are in contact, so that the bearing chamber is fixed on the mounting seat. Then, loosen the second nut to make the transverse movement frame move back to the initial position. Next, loosen the first nut and remove the adjusting rod from the other side of the assembly table. Then, perform full welding at the joint where the curved surface and the reinforcing block are in contact; d. Flipping of the mounting seat First, use the pushing cylinder on the assembly table to pull the tooth rail and move it towards the other side of the assembly table, thereby driving the transmission gear to rotate. The transmission gear drives the mounting seat to flip, so that the limiting rod is clamped in the bottom limiting clip on the inner wall of the assembly table. The mounting seat flips 180°. The curved surface of the mounting seat faces the side of the assembly table away from the transverse movement frame. At the same time, install the clamping member onto the adjusting rod and install the adjusting rod onto the transverse movement frame; e. Installation of the clamping member First, move the transverse movement frame towards one side of the mounting seat so that the clamping block on the outer circumference of the connecting ring closely adheres to the mounting seat. At the same time, the first threaded connection part on the connecting ring abuts against the connecting groove. Then, rotate the adjusting rod so that the adjusting rod drives the connecting ring to rotate, and the first threaded connection part is screwed into the connecting groove, so that the connecting ring is fixed on the bearing chamber. Then, move the transverse movement frame back to the initial position, remove the adjusting rod, and then weld the joint where the bearing chamber and the connecting ring are in contact. Then, take out the assembled motor end cover from the notch of the assembly table, and then remove the rotating block and the limiting rod, thus completing the manufacture of the motor end cover.

2. A manufacturing method of a pressure-resistant motor end cover according to claim 1, characterized in that: The mounting seat is provided with a curved surface, the mounting hole is provided at the center of the curved surface, and heat dissipation holes are circumferentially distributed on the outer wall of the mounting seat.

3. A manufacturing method of a pressure-resistant motor end cover according to claim 2, characterized in that: The bottom of the mounting seat is provided with a connecting part extending outward. The top of the connecting part is provided with a reinforcing rib, and the reinforcing rib closely adheres to the outer wall of the mounting seat.

4. A manufacturing method of a pressure-resistant motor end cover according to claim 3, characterized in that: Connecting blocks are circumferentially distributed on the connecting part, and triangular reinforcing blocks are provided between the connecting blocks and the inner walls of the corresponding heat dissipation holes.

5. A manufacturing method of a pressure-resistant motor end cover according to claim 1, characterized in that: The reinforcement component includes a reinforcement block, an orbital ring and a clamping member. The orbital ring passes through the reinforcement block. A clamping block is slidably connected to the orbital ring. The clamping block is closely attached to both sides of the reinforcement block. One end of the reinforcement block is welded to the outer wall of the bearing chamber. The bottom of the other end of the reinforcement block is welded to the mounting seat. The clamping member is fixedly connected to the bottom of the bearing chamber. The clamping member abuts against the bottom of the top surface of the mounting seat.

6. The manufacturing method of a pressure-resistant motor end cover according to claim 5, characterized in that: The orbital ring is provided with a chute, and the clamping block is correspondingly provided with a slider. The slider is slidably connected in the chute. A fastening screw is provided on the top of the clamping block. The fastening screw is tightened on the orbital ring.

7. The manufacturing method of a pressure-resistant motor end cover according to claim 5, characterized in that: The clamping member includes a connecting ring and a clamping block. The clamping blocks are circumferentially distributed on the outer side of the connecting ring. The clamping block is welded to the connecting ring. The top of the clamping block abuts against the bottom of the top surface of the mounting seat. A first threaded connection portion protruding upward is provided on the top of the connecting ring. A connecting groove is correspondingly provided at the bottom of the bearing chamber. An internal thread is provided in the connecting groove. The internal thread matches the first threaded connection portion. The first threaded connection portion is threadedly connected in the connecting groove.

8. The manufacturing method of a pressure-resistant motor end cover according to claim 1, characterized in that: A fixing frame is installed on the other side of the assembly table. A centering rod is movably connected to the fixing frame. The centering rod is concentric with the mounting hole. A third nut is threadedly connected to the centering rod. The third nut is tightened on both sides of the fixing frame. A centering hole corresponding to the centering rod is provided on the limiting block at one end of the adjusting rod. When the transverse moving frame moves towards the mounting seat side, loosen the third nut, drive the centering rod to move towards one side of the transverse moving frame, and adjust the height of the adjusting rod through the adjusting hole on the transverse moving frame, so that the centering rod is inserted into the centering hole of the limiting block, thereby ensuring that the adjusting rod is concentric with the mounting seat, and making the bearing chamber, clamping member and mounting seat installed on the adjusting rod concentric.

9. The manufacturing method of a pressure-resistant motor end cover according to claim 1, characterized in that: The connection step of the adjusting rod and the clamping member is specifically as follows: First, pass the adjusting rod through the clamping ring, so that the limiting block at one end of the adjusting rod abuts against one side of the clamping ring, and then screw in the first nut so that one side of the first nut is tightened on the other side of the clamping ring. Then pass the other end of the adjusting rod through the adjusting hole on the transverse moving frame, and the other side of the first nut is closely attached to one side of the transverse moving frame. Then screw in the second nut at the other end of the adjusting rod so that the second nut is tightened on the other side of the transverse moving frame. Then fix the clamping member to the clamping ring. The clamping ring abuts against the connecting ring. The clamping block on the clamping ring is clamped on both sides of the clamping block. Then turn the tightening screw on the clamping block, and the tightening screw presses tightly on the clamping block.

Images