Motor mounting hole coaxiality testing fixture for rear axle of electric vehicle

Abstract

The utility model discloses a motor mounting hole coaxiality testing fixture for an electric automobile rear axle, which belongs to the technical field of coaxiality detection, and comprises a support frame, the outer wall of the support frame is fixedly connected with symmetrically distributed fixed discs, the inner walls of the fixed discs are provided with uniformly distributed chutes, and the outer walls of the two groups of fixed discs are provided with adjusting assemblies; a driving limiting assembly is arranged between the two sets of fixing discs. The adjusting assembly comprises a sliding block slidably connected to the inner wall of the sliding groove, the inner wall of the sliding block penetrates through and is fixedly connected with an extrusion frame, and the end, away from the sliding block, of the extrusion frame is detachably connected with an extrusion block. According to the utility model, the arranged horizontal base falls on the horizontal ground and is matched with the supporting frame and the balancing instrument to detect the balance of equipment, so that the balance of the coaxiality detection tool is ensured, errors of detection data are prevented, and the problem that the detection result is influenced due to the absence of a balancing device in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of coaxiality detection, in particular to a coaxiality detection tool for a motor mounting hole of a rear axle of an electric vehicle. Background Art

[0002] The motor mounting hole of the rear axle of an electric vehicle is usually designed as a circular hole concentric with the motor's mounting bolt hole. The diameter and depth of this mounting hole will vary depending on the specific motor model and design requirements. The location of the mounting hole is usually determined based on the transmission system and mechanical connection between the motor and the rear axle. When installing the motor, it is necessary to ensure that the size and position of the mounting hole are completely aligned with the motor's mounting bolts to ensure that the motor can be firmly installed on the rear axle. Therefore, during installation, this mounting hole needs to be inspected with a coaxiality inspection fixture, and necessary calibration and adjustment work must be performed to prevent gaps during installation that may cause the vehicle to become loose or vibrate during use, thereby ensuring the normal operation and performance of the rear axle of the electric vehicle.

[0003] After searching, the Chinese patent authorization number CN203231730U discloses a coaxiality detection tool for the motor seat mounting hole and the bearing hole, including tool A and tool B. The tool A includes a connecting rod, and a detection column is provided at one end of the connecting rod, and the diameter of the detection column matches the diameter of the bearing hole of the motor seat; the tool B includes a detection ring, and the outer diameter of the detection ring matches the diameter of the motor seat mounting hole, and the diameter of the center hole of the detection ring matches the diameter of the connecting rod. The motor seat mounting hole and bearing hole coaxiality detection tool in the above patent has the following shortcomings: 1. The device structure is a fixed size and can only adapt to the corresponding motor mounting hole, and the adaptability range is limited; 2. The device does not have a balancing device. Only by holding and connecting the detection mounting hole by hand, the angle tilt may affect the coaxiality detection result. Utility Model Content

[0004] The utility model aims to solve the problem that the existing technology has limited application scope and no balancing device, thus affecting the detection result, and proposes a coaxiality inspection tool for the motor mounting hole of the rear axle of an electric vehicle.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A coaxiality inspection tool for motor mounting holes of a rear axle of an electric vehicle comprises a support frame, the outer wall of the support frame is fixedly connected with symmetrically distributed fixing plates, the inner wall of the fixing plates is provided with evenly distributed sliding grooves, and the outer walls of two groups of the fixing plates are both provided with adjustment components;

[0007] Wherein, a driving limit assembly is arranged between the two groups of fixed disks;

[0008] Among them, the adjustment component includes a slider slidably connected to the inner wall of the slide groove, the inner wall of the slider penetrates and is fixedly connected with an extrusion frame, the end of the extrusion frame away from the slider is detachably connected with an extrusion block, and the end of the extrusion frame away from the extrusion block is fixedly connected to a limiting block.

[0009] As a preferred technical solution of the present application, the fixed disk is rotatably connected to a driving disk at one end away from the supporting frame, the inner wall of the driving disk is provided with evenly distributed arc grooves, and the extrusion frame is located inside the arc grooves.

[0010] As a preferred technical solution of the present application, symmetrically distributed reinforcement rods are fixedly connected between the two groups of fixed plates.

[0011] As a preferred technical solution of the present application, the drive limit assembly includes a connecting rod rotatably connected to the inner wall of the fixed disk, the outer wall of the connecting rod passes through the fixed disk and is connected to the driving disk, the connecting rod and the outer wall of the support frame are both provided with symmetrically distributed limit holes, a limit frame is provided on the inner wall of the limit hole, the outer wall of the connecting rod is fixedly connected to a handle, and the outer wall of the handle is fixedly connected to evenly distributed anti-slip patterns.

[0012] As a preferred technical solution of the present application, a horizontal base is fixedly connected to the bottom of the support frame, and a balancing instrument is fixedly connected between the support frames.

[0013] Compared with the prior art, the utility model provides a coaxiality inspection tool for the motor mounting hole of the rear axle of an electric vehicle, which has the following beneficial effects:

[0014] 1. The coaxiality inspection fixture for the motor mounting hole of the rear axle of an electric vehicle can simultaneously move the extrusion block inward and outward by means of a driving limit assembly and an adjustment assembly, thereby adjusting the size formed by all the extrusion blocks, so as to adapt to the mounting holes of motors of different sizes, and has multiple uses in one, reducing design and production costs, and solving the problem that the coaxial inspection fixture structure in the prior art is of fixed size and has a limited adaptability range;

[0015] 2. The coaxiality inspection tool for the motor mounting hole of the rear axle of the electric vehicle is placed on a horizontal ground with a horizontal base and cooperates with a support frame and a balancing instrument to detect the balance of the equipment, thereby ensuring the balance of the coaxiality inspection tool itself to prevent errors in the detection data, and solving the problem that the existing technology does not have a balancing device, thereby affecting the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the anti-slip pattern structure of the utility model;

[0018] Figure 3 It is a top view of the utility model;

[0019] Figure 4 It is a side view of the utility model;

[0020] Figure 5 It is a front view of the utility model.

[0021] In the figure:

[0022] 1. Support frame; 2. Horizontal base; 3. Fixed plate; 4. Slide groove; 5. Sliding block; 6. Extrusion frame; 7. Extrusion block; 8. Driving plate; 9. Arc groove; 10. Limit block; 11. Reinforcement rod; 12. Limit hole; 13. Limit frame; 14. Balancer; 15. Handle; 16. Connecting rod; 17. Anti-slip pattern. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model. Example

[0024] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , a coaxiality inspection tool for the motor mounting hole of the rear axle of an electric vehicle, comprising a support frame 1, the outer wall of the support frame 1 is fixedly connected with a symmetrically distributed fixed disk 3, the fixed disk 3 is a fixed position, provides a rotation support force for the driving disk 8 and facilitates the directional sliding of the slider 5 in the slide groove 4, and the inner wall of the fixed disk 3 is provided with a uniformly distributed slide groove 4, and the outer walls of the two groups of fixed disks 3 are provided with adjustment components;

[0025] Among them, a driving limit assembly is arranged between the two sets of fixed disks 3;

[0026] Among them, the adjustment component includes a slider 5 slidably connected to the inner wall of the slide groove 4, and the inner wall of the slider 5 is penetrated and fixedly connected with an extrusion frame 6. The extrusion frame 6 is directionally slid in the slide groove 4 through the slider 5 to facilitate the movement of the extrusion frame 6. The end of the extrusion frame 6 away from the slider 5 is detachably connected with an extrusion block 7. The extrusion block 7 squeezes the inner wall of the mounting hole. The two groups of symmetrically distributed extrusion blocks 7 always maintain the same state, so as to detect whether the motor mounting holes match. The end of the extrusion frame 6 away from the extrusion block 7 is fixedly connected to a limit block 10. The limit block 10 prevents the equipment from loosening and limits its extrusion frame 6.

[0027] Reference Figure 1 , Figure 2 and Figure 4 The end of the fixed disk 3 away from the support frame 1 is rotatably connected to the driving disk 8, and the inner wall of the driving disk 8 is provided with evenly distributed arc grooves 9, and the extrusion frame 6 is located inside the arc groove 9. When the driving disk 8 rotates, the arc groove 9 is driven to rotate synchronously, and the extrusion frame 6 is driven to slide inside the slide groove 4 through the slider 5 by squeezing the extrusion frame 6 through the inner wall of the arc groove 9.

[0028] Reference Figure 2 and Figure 3 The two groups of fixing plates 3 are fixedly connected with symmetrically distributed reinforcement rods 11, and the reinforcement rods 11 strengthen the structural connection between the fixing plates 3, thereby providing stability for the equipment.

[0029] Reference Figure 2 and Figure 5 The driving limit assembly includes a connecting rod 16 rotatably connected to the inner wall of the fixed disk 3. The outer wall of the connecting rod 16 passes through the fixed disk 3 and is connected to the driving disk 8. The driving disk 8 is driven to rotate by the connecting rod 16. The connecting rod 16 and the outer wall of the support frame 1 are both provided with symmetrically distributed limit holes 12. The inner wall of the limit hole 12 is provided with a limit frame 13. The limit frame 13 is inserted into the limit hole 12 to achieve the limit fixation of the connecting rod 16. The outer wall of the connecting rod 16 is fixedly connected with a handle 15. The outer wall of the handle 15 is fixedly connected with evenly distributed anti-slip patterns 17. The anti-slip patterns 17 improve friction, thereby facilitating the rotation of the connecting rod 16.

[0030] Reference Figure 1 A horizontal base 2 is fixedly connected to the bottom of the support frame 1. The horizontal base 2 is a horizontal support base, which is convenient for the equipment to maintain a horizontal state when placed on the ground to prevent affecting the detection results. A balance meter 14 is fixedly connected between the support frames 1. The balance meter 14 is used to observe whether the equipment is in a balanced state.

[0031] Specifically, when the motor mounting hole coaxiality inspection tool of the rear axle of the electric vehicle is working / used: first, place the support frame 1 in a horizontal position, and use the balancer 14 to observe whether the equipment is in a horizontal state. After adjusting the position of the equipment, pull out the limit frame 13, and hold the handle 15 with anti-slip grooves 17, then turn the handle 15 to drive the connecting rod 16 to rotate, thereby driving the driving plate 8 to rotate on the outer wall of the fixed plate 3, thereby driving the arc groove 9 to rotate, and squeezing the extrusion frame 6 through the inner wall of the arc groove 9 through the slider 5 in the slide groove. 4 inner wall slides, thereby driving the extrusion block 7 to move, so as to adjust the size of the circle formed between the extrusion blocks 7. When the diameter of the circle is the diameter of one of the mounting holes, the adjustment of the position of the extrusion block 7 is completed. Then, the limiting frame 13 is inserted into the limiting hole 12 to limit the connecting rod 16, that is, to limit the driving disk 8. Then, the corresponding device for the motor installation is moved, so that the mounting hole is inserted into the outside of another group of extrusion blocks 7 forming a circle. If the extrusion block 7 is inserted into the inside, the mounting hole is correspondingly adapted, otherwise it is not adapted.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coaxiality inspection tool for motor mounting holes of a rear axle of an electric vehicle, comprising a support frame (1), characterized in that: The outer wall of the support frame (1) is fixedly connected with symmetrically distributed fixing plates (3), the inner wall of the fixing plates (3) is provided with evenly distributed sliding grooves (4), and the outer walls of the two groups of fixing plates (3) are both provided with adjustment components; Wherein, a driving limit assembly is provided between the two sets of fixed disks (3); The adjustment component comprises a slider (5) slidably connected to the inner wall of the slide groove (4); an extrusion frame (6) penetrates through the inner wall of the slider (5) and is fixedly connected thereto; an extrusion block (7) is detachably connected to one end of the extrusion frame (6) away from the slider (5); and a limit block (10) is fixedly connected to one end of the extrusion frame (6) away from the extrusion block (7).

2. The coaxiality inspection tool for the motor mounting hole of the rear axle of an electric vehicle according to claim 1 is characterized in that: One end of the fixed disk (3) away from the support frame (1) is rotatably connected to a driving disk (8), the inner wall of the driving disk (8) is provided with evenly distributed arc grooves (9), and the extrusion frame (6) is located inside the arc grooves (9).

3. The coaxiality inspection tool for the motor mounting hole of the rear axle of an electric vehicle according to claim 1, characterized in that: Symmetrically distributed reinforcement rods (11) are fixedly connected between the two groups of fixed plates (3).

4. The coaxiality inspection tool for the motor mounting hole of the rear axle of an electric vehicle according to claim 1, characterized in that: The driving limit assembly comprises a connecting rod (16) rotatably connected to the inner wall of the fixed disk (3); the outer wall of the connecting rod (16) penetrates the fixed disk (3) and is connected to the driving disk (8); the connecting rod (16) and the outer wall of the support frame (1) are both provided with symmetrically distributed limit holes (12); the inner wall of the limit hole (12) is provided with a limit frame (13); the outer wall of the connecting rod (16) is fixedly connected to a handle (15); and the outer wall of the handle (15) is fixedly connected to uniformly distributed anti-slip patterns (17).

5. The coaxiality inspection tool for the motor mounting hole of the rear axle of an electric vehicle according to claim 1, characterized in that: A horizontal base (2) is fixedly connected to the bottom of the support frame (1), and a balancing instrument (14) is fixedly connected between the support frames (1).

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