New energy electric vehicle motor bearing dismounting and assembling mechanism

Abstract

The utility model relates to a disassembling and assembling mechanism for a motor bearing of a new energy electric vehicle. The device comprises a mounting seat, a first driving assembly vertically arranged on the mounting seat, a connecting assembly arranged at the driving end of the first driving assembly and used for being quickly connected with a motor assembly bearing, an ejector pin vertically penetrating through the connecting assembly, and a second driving assembly vertically arranged on the mounting seat and used for driving the ejector pin to press a rotor assembly shaft body. The connecting assembly comprises a connecting disc, at least three pullers which are vertically arranged on the connecting disc and are uniformly arranged in the circumferential direction, and a guide hole which is formed in the middle of the connecting disc and is convenient for the ejector pin to pass through; a hook head with a flat structure is arranged at the lower end of the puller; the bearing dismounting device is suitable for dismounting a bearing which is far away from the end part of a shaft body in a motor assembly, and meanwhile, the shaft body can be pressed and positioned through the ejector pin in the dismounting process, so that time and labor are saved, the working efficiency is greatly improved, and the dismounting precision is high.

Description

Technical Field

[0001] The utility model relates to the field of bearing disassembly and assembly, in particular to a new energy electric vehicle motor bearing disassembly and assembly mechanism. Background Art

[0002] As the world pays more and more attention to environmental protection and sustainable development, the new energy vehicle industry, as an important part of green travel, has developed rapidly. The performance and efficiency of the motor assembly, one of the core components of new energy vehicles, is directly related to the vehicle's power, economy and reliability. However, in the manufacturing, maintenance and troubleshooting of new energy electric vehicle motor assemblies, traditional disassembly and assembly methods face many challenges.

[0003] The structure of the motor assembly of new energy electric vehicles is complex, usually composed of multiple precision parts such as stator assembly, rotor assembly, motor housing, front and rear end covers, resolver assembly, cooling water channel, etc. These parts not only need to be precisely matched, but also involve a variety of materials and high-precision processing technology.

[0004] like Figure 1 As shown, the bearing in the motor assembly is far away from the end of the shaft body. If an ordinary puller is used for disassembly, although the bearing can be removed, it is very laborious. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art and to provide a new energy electric vehicle motor bearing disassembly and assembly mechanism.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a new energy electric vehicle motor bearing disassembly and assembly mechanism, comprising a mounting seat, a first drive assembly vertically arranged on the mounting seat, a connecting assembly arranged at the driving end of the first drive assembly for quickly connecting the motor assembly bearing, a thimble vertically penetrating the connecting assembly, and a second drive assembly vertically arranged on the mounting seat for driving the thimble to press the rotor assembly shaft body;

[0007] The connection assembly includes a connection disk, at least three pullers vertically arranged on the connection disk and evenly placed in the circumferential direction, and a guide hole arranged in the middle of the connection disk for the ejector to pass through; a flat hook is arranged at the lower end of the puller.

[0008] Preferably, the connection assembly further comprises a plurality of mounting plates in a fan-shaped structure;

[0009] A plurality of mounting plates are arranged on the connection disk to form a circular ring; each of the connection disks is provided with an arc-shaped groove; and the ends of the arc-shaped grooves are provided with expansion holes;

[0010] The connection plate is provided with a plurality of limit bolts corresponding to the arc-shaped grooves on the mounting plate; the nut diameter of the limit bolts is smaller than the diameter of the expanded hole and larger than the width of the arc-shaped groove;

[0011] The puller is vertically mounted on the mounting plate.

[0012] Preferably, the puller comprises a first connecting portion passing through the mounting plate, and a second connecting portion connected to the first connecting portion and coaxially disposed;

[0013] A nut threadedly connected to the first connecting portion is provided above the mounting plate;

[0014] A spring is sleeved on the first connecting portion below the mounting plate;

[0015] The diameter of the second connecting portion is not less than the diameter of the spring;

[0016] The hook head is detachably arranged at the lower end of the second connecting part.

[0017] Preferably, the first driving assembly comprises an electric cylinder vertically arranged on a mounting seat, a mounting plate arranged at a driving end of the electric cylinder, and four connecting rods for connecting the mounting plate and the connecting plate;

[0018] The second driving assembly includes a movable seat located between four connecting rods and connected to the ejector pin, and two cylinders arranged on the mounting seat and located on both sides of the electric cylinder for driving the movable seat to rise and fall.

[0019] Preferably, the first driving assembly further comprises a gantry disposed on the mounting seat;

[0020] The electric cylinder is vertically arranged on the gantry;

[0021] The mounting plate can extend into the gantry through the mounting seat.

[0022] Preferably, the movable seat is in a cross shape;

[0023] The second driving assembly also includes two sets of guide assemblies located on the other two sides of the electric cylinder for connecting the movable seat;

[0024] The two groups of guide components and cylinders are respectively connected to the four end points of the movable seat.

[0025] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0026] The utility model is suitable for the disassembly and assembly of bearings which are far away from the ends of the shaft bodies in the motor components. At the same time, during the disassembly and assembly process, the shaft bodies can be pressed and positioned by the ejector pins, which not only saves time and labor, greatly improves the work efficiency, but also has high disassembly and assembly accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0028] Attached Figure 1 It is a structural diagram of the rotor assembly in the motor assembly;

[0029] Attached Figure 2 This is a structural schematic diagram of the new energy electric vehicle motor bearing disassembly and assembly mechanism described in the utility model;

[0030] Attached Figure 3 It is a structural schematic diagram of the connection assembly in the utility model;

[0031] Attached Figure 4 It is a structural schematic diagram of the puller in the utility model.

[0032] Among them: 1. mounting seat; 2. first drive assembly; 21. electric cylinder; 22. mounting plate; 23. connecting rod; 24. gantry; 3. connecting assembly; 31. connecting plate; 32. puller; 321. first connecting part; 322. second connecting part; 33. guide hole; 34. hook; 35. mounting plate; 351. arc groove; 352. expansion hole; 36. limit bolt; 37. nut; 38. spring; 4. ejector pin; 5. second drive assembly; 51. movable seat; 52. cylinder; 53. guide assembly; 6. rotor assembly; 61. bearing; 62. shaft body. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] Attached Figure 2-4 The new energy electric vehicle motor bearing disassembly and assembly mechanism described in the utility model comprises a mounting seat 1, a first driving assembly 2 vertically arranged on the mounting seat 1, a connecting assembly 3 arranged at the driving end of the first driving assembly 2 for quickly connecting the bearing 61 in the motor assembly, a thimble 4 vertically penetrating the connecting assembly 3, and a second driving assembly 5 vertically arranged on the mounting seat 1 for driving the thimble 4 to press the shaft body 62 in the rotor assembly 6;

[0035] The connecting assembly 3 includes a connecting disk 31, three pullers 32 vertically arranged on the connecting disk 31 and evenly placed in the circumferential direction, and a guide hole 33 arranged in the middle of the connecting disk 31 for the ejector pin 4 to pass through; a hook 34 with a flat structure is arranged at the lower end of the puller 32.

[0036] During operation: the motor assembly is placed in a special fixture and is placed directly below the connecting assembly 3; then the second driving assembly 5 first drives the ejector pin 4 to press the shaft 62 of the rotor assembly 6; then the first driving assembly 2 drives the connecting assembly 3 to descend until the connecting assembly 3 contacts the bearing 61 in the motor assembly; then the connecting assembly 3 is quickly connected to the bearing 61 in the motor assembly; finally, the first driving assembly 2 drives the connecting assembly 3 to rise, pulls out the bearing 61 in the motor assembly, completes the disassembly of the bearing 61 and generates the force and displacement curves.

[0037] Among them, before the first driving component 2 drives the connecting component 3 to descend, the hook heads 34 with flat structures at the lower ends of the three pullers 32 are placed in the circumferential direction of the groove of the bearing 61, to ensure that when the first driving component 2 drives the connecting component 3 to descend, the hook heads 34 with flat structures at the lower ends of the three pullers 32 can smoothly extend into the groove of the bearing 61; then the three pullers 32 are rotated 90 degrees respectively, so that the hook heads 34 with flat structures at the lower ends of the three pullers 32 are placed in the radial direction of the groove of the bearing 61 to achieve quick connection.

[0038] Of course, if there are other mechanisms that can press the housing of the motor assembly before the first driving assembly 2 drives the connecting assembly 3 to rise, it is easier to pull out the bearing 61.

[0039] Further, if Figure 3 As shown, the connecting component 3 also includes three fan-shaped mounting plates 35; the three mounting plates 35 are arranged on the connecting plate 31 and form a circular ring; each of the connecting plates 31 is provided with an arc groove 351; the ends of the arc grooves 351 are provided with expansion holes 352; three limiting bolts 36 corresponding to the arc grooves 351 on the mounting plates 35 are provided on the connecting plate 31; the nut diameter of the limiting bolts 36 is smaller than the diameter of the expansion hole 352 and larger than the width of the arc groove 351; the puller 32 is vertically installed on the mounting plate 35.

[0040] When it is necessary to disassemble and assemble different types of bearings 61, the above structure can quickly replace the puller 32; specifically, if it is necessary to remove the puller 32, turn the three mounting plates 35 counterclockwise at the same time until the limit bolt 36 moves from the arc groove 351 to the expanded hole 352. Since the nut diameter of the limit bolt 36 is smaller than the diameter of the expanded hole 352, the mounting plate 35 can be quickly removed for replacement; among them, different types of pullers 32 not only have different sizes of the bottom hooks 34, but also different installation positions on the mounting plate 35, so that different types of bearings 61 can be used.

[0041] Further, if Figure 4As shown, the puller 32 includes a first connecting portion 321 passing through the mounting plate 35, and a second connecting portion 322 connected to the first connecting portion 321 and placed coaxially; a nut 37 threadedly connected to the first connecting portion 321 is arranged above the mounting plate 35; a spring 38 is sleeved on the first connecting portion 321 below the mounting plate 35; the diameter of the second connecting portion 322 is not less than the diameter of the spring 38; the hook head 34 is detachably arranged at the lower end of the second connecting portion 322.

[0042] During installation: first assemble the first connection part 321, the second connection part 322 and the hook head 34, then put the spring 38 on the first connection part 321, then pass the first connection part 321 through the mounting plate 35 from bottom to top, and finally thread the nut 37 to the first connection part 321; at this time, under the elastic force of the spring 38, the second connection part 322 is always driven to move downward, but the first connection part 321 is provided with a nut 37 above the mounting plate 35, which can play a limiting role to prevent the first connection part 321 from detaching from the mounting plate 35.

[0043] The above structural design can play a buffering role for the puller 32 to avoid hard contact with the bearing 61 and damage to the bearing 61.

[0044] The first connection part 321 , the second connection part 322 and the hook head 34 may be connected by threads or snap-fitted. Of course, the first connection part 321 and the second connection part 322 may also be integrally cast and separately connected to the hook head 34 by threads or snap-fitted.

[0045] Further, if Figure 1 As shown, the first driving assembly 2 includes an electric cylinder 21 vertically arranged on the mounting seat 1, a mounting plate 22 arranged at the driving end of the electric cylinder 21, and four connecting rods 23 for connecting the mounting plate 22 and the connecting plate 31;

[0046] The second driving assembly 5 includes a movable seat 51 located between the four connecting rods 23 and connected to the ejector pin 4 , and two cylinders 52 disposed on the mounting seat 1 and located on both sides of the electric cylinder 21 for driving the movable seat 51 to move up and down.

[0047] Since the ejector pin 4 needs to pass through the connecting plate 31, in order to avoid interference between the ejector pin 4 and the electric cylinder 21, the mounting plate 22 and the connecting plate 31 are connected by four connecting rods 23. When working, the four connecting rods 23 are driven by the electric cylinder 21 to drive the connecting assembly 3 to rise and fall; and the ejector pin 4 drives the movable seat 51 to rise and fall through the cylinder 52.

[0048] Further, if Figure 1As shown, the first driving component 2 also includes a gantry 24 arranged on the mounting seat 1; the electric cylinder 21 is vertically arranged on the gantry 24; the mounting plate 22 can pass through the mounting seat 1 and extend into the gantry 24; the utility model can change the upper and lower limit positions of the connecting component 3 by adding the gantry 24, so that the mounting plate 22 and part of the connecting rod 23 extend into the gantry 24, freeing up space and being able to work in coordination with other mechanisms to avoid interference.

[0049] Further, if Figure 1 As shown, the movable seat 51 is cross-shaped; the second driving assembly 5 also includes two sets of guide assemblies 53 located on the other two sides of the electric cylinder 21 for connecting the movable seat 51; when working, since the two sets of guide assemblies 53 and the cylinder 52 are respectively connected to the four end points of the movable seat 51, the lifting and lowering of the ejector pin 4 is more stable.

[0050] The above are only specific application examples of the utility model, and do not constitute any limitation on the protection scope of the utility model. Any technical solution formed by equivalent transformation or equivalent replacement falls within the protection scope of the utility model.

Claims

1. A new energy electric vehicle motor bearing disassembly and assembly mechanism, characterized by: It comprises a mounting seat, a first driving assembly vertically arranged on the mounting seat, a connecting assembly arranged at a driving end of the first driving assembly for quickly connecting to a bearing of a motor assembly, an ejector pin vertically penetrating the connecting assembly, and a second driving assembly vertically arranged on the mounting seat for driving the ejector pin to press the shaft of the rotor assembly; The connection assembly includes a connection disk, at least three pullers vertically arranged on the connection disk and evenly placed in the circumferential direction, and a guide hole arranged in the middle of the connection disk for the ejector to pass through; a flat hook is arranged at the lower end of the puller.

2. The new energy electric vehicle motor bearing disassembly and assembly mechanism according to claim 1 is characterized in that: The connection assembly also includes a plurality of mounting plates in a fan-shaped structure; A plurality of mounting plates are arranged on the connection disk to form a circular ring; each of the connection disks is provided with an arc-shaped groove; and the ends of the arc-shaped grooves are provided with expansion holes; The connection plate is provided with a plurality of limit bolts corresponding to the arc-shaped grooves on the mounting plate; the nut diameter of the limit bolts is smaller than the diameter of the expanded hole and larger than the width of the arc-shaped groove; The puller is vertically mounted on the mounting plate.

3. The new energy electric vehicle motor bearing disassembly and assembly mechanism according to claim 2 is characterized in that: The puller includes a first connecting portion passing through the mounting plate, and a second connecting portion connected to the first connecting portion and coaxially disposed; A nut threadedly connected to the first connecting portion is provided above the mounting plate; A spring is sleeved on the first connecting portion below the mounting plate; The diameter of the second connecting portion is not less than the diameter of the spring; The hook head is detachably arranged at the lower end of the second connecting part.

4. The new energy electric vehicle motor bearing disassembly and assembly mechanism according to any one of claims 1 to 3, characterized in that: The first driving assembly includes an electric cylinder vertically arranged on a mounting seat, a mounting plate arranged at a driving end of the electric cylinder, and four connecting rods for connecting the mounting plate and the connecting plate; The second driving assembly includes a movable seat located between four connecting rods and connected to the ejector pin, and two cylinders arranged on the mounting seat and located on both sides of the electric cylinder for driving the movable seat to rise and fall.

5. The new energy electric vehicle motor bearing disassembly and assembly mechanism according to claim 4 is characterized in that: The first drive assembly also includes a gantry disposed on the mounting seat; The electric cylinder is vertically arranged on the gantry; The mounting plate can extend into the gantry through the mounting seat.

6. The new energy electric vehicle motor bearing disassembly and assembly mechanism according to claim 4 is characterized in that: The movable seat is in a cross shape; The second driving assembly also includes two sets of guide assemblies located on the other two sides of the electric cylinder for connecting the movable seat; The two groups of guide components and cylinders are respectively connected to the four end points of the movable seat.

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