Differential housing inner diameter detection mechanism

Abstract

The differential shell inner diameter detection mechanism comprises a workbench, the upper end of the workbench is fixedly connected with a placement table, the upper end face of the placement table is provided with a positioning hole, and the two sides of the upper end of the placement table are provided with clamping plates; a rotating mechanism is arranged at the upper end of the lifting mechanism, a connecting assembly is arranged at the lower end of the rotating mechanism, a detection rod is arranged at the lower end of the connecting assembly, and an infrared distance meter is fixedly connected to the lower end of the detection rod. According to the invention, the lifting mechanism and the rotating mechanism are arranged, and the lifting mechanism drives the infrared distance meter to move downwards, so that the infrared distance meter extends into the differential shell, and the infrared distance meter can conveniently detect the inner diameter of the differential shell; and meanwhile, the infrared distance meter can be driven to rotate under the cooperation of the rotating mechanism, so that the inner diameter of the differential shell at the same latitude can be detected, and the detection accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of differential case inner diameter detection, and in particular to a differential case inner diameter detection mechanism. Background Art

[0002] A vehicle's differential enables the left and right (or front and rear) drive wheels to rotate at different speeds. It primarily consists of left and right axle gears, two planetary gears, and a gear carrier. Its function is to ensure pure rolling motion for the left and right wheels when cornering or driving on uneven surfaces, allowing them to rotate at different speeds. The differential housing supports, connects, and transmits torque. After production, the differential housing's inner diameter must be inspected using testing equipment.

[0003] At present, the general process of differential housing inner diameter size inspection is as follows: after the product is processed, the employee takes the workpiece to the inspection table and then measures it with an internal diameter micrometer. Although this achieves the purpose of inspection, the inspection efficiency is low and the labor intensity is high. In addition, due to the human factor in the inspection, the accuracy of the inspection is also affected. Therefore, it is necessary to design a differential housing inner diameter detection mechanism. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a differential case inner diameter detection mechanism.

[0005] In order to achieve the above-mentioned object, the present invention adopts the following technical solution: a differential case inner diameter detection mechanism, comprising a workbench, the upper end of which is fixedly connected to a placement table, the upper end surface of which is provided with a positioning hole, and clamping plates are provided on both sides of the upper end of the placement table;

[0006] The workbench is provided with a lifting mechanism at the rear side of the upper end, a rotating mechanism is provided at the upper end of the lifting mechanism, a connecting assembly is provided at the lower end of the rotating mechanism, a detection rod is provided at the lower end of the connecting assembly, and an infrared rangefinder is fixedly connected to the lower end of the detection rod;

[0007] Both sides of the upper end of the placement platform are provided with moving mechanisms, an adjusting mechanism is provided inside the moving mechanism, and the moving mechanism is connected to the clamping plate through the adjusting mechanism.

[0008] As a further description of the above technical solution:

[0009] The lifting mechanism includes a support column, a first motor, a square slot, a first screw rod and a cantilever. The support column is fixedly connected to the rear side of the upper end of the workbench. A square slot is provided on the front end surface of the support column. The first screw rod is rotatably connected inside the square slot. The upper end of the support column is fixedly connected to the first motor. The output end of the first motor is fixedly connected to the first screw rod. The circumferential surface of the first screw rod is threadedly connected to the cantilever. The rear end of the cantilever is located inside the square slot and is slidably connected to the square slot.

[0010] As a further description of the above technical solution:

[0011] The movable mechanism includes a connecting plate, a sliding rod, a transmission plate, a sliding hole and a first movable plate, both sides of the cantilever are fixedly connected to the connecting plate, the upper end of the placement table is slidingly provided with a first movable plate and a transmission plate, the first movable plate and the transmission plate are fixedly connected, and four transmission plates are provided, and the front and rear transmission plates form a group, and a sliding hole is opened on the side end surface of the transmission plate, and a sliding rod is slidably connected inside the sliding hole, and the sliding rod and the connecting plate are fixedly connected.

[0012] As a further description of the above technical solution:

[0013] The sliding hole consists of two vertical sections and an inclined section, and the inclined section is located between the two vertical sections.

[0014] As a further description of the above technical solution:

[0015] The adjusting mechanism includes a fixed plate, a handle, a second screw rod, a second movable plate and a movable rod, a fixed plate is fixedly connected between the front and rear transmission plates, a second screw rod is rotatably connected inside the fixed plate, the second screw rod is rotatably connected to the first movable plate, the end of the second screw rod is fixedly connected to the handle, the circumferential surface of the second screw rod is threadedly connected to the second movable plate, the second movable plate is fixedly connected to a side close to the clamping plate, the movable rod passes through the first movable plate, and is slidably connected to the first movable plate, and the movable rod is fixedly connected to the clamping plate.

[0016] As a further description of the above technical solution:

[0017] A slide groove is provided on the upper end surface of the placement table, a slider is slidably connected inside the slide groove, the upper end of the slider is fixedly connected to the first movable plate, and the end surface shapes of the slider and the slide groove are both dovetail groove shapes.

[0018] As a further description of the above technical solution:

[0019] The rotating mechanism includes a second motor, a driving wheel, a driven wheel, a belt and a rotating shaft. The second motor is installed inside the cantilever, and the output end of the second motor passes through the upper end of the cantilever and is rotatably connected to the cantilever. The output end of the second motor is fixedly connected to the driving wheel; the rotating shaft is rotatably connected inside the front end of the cantilever, and the upper end of the rotating shaft is fixedly connected to the driven wheel. The driven wheel and the driving wheel are connected by a belt.

[0020] As a further description of the above technical solution:

[0021] A mounting groove is provided on the lower end surface of the cantilever, and the second motor is located inside the mounting groove.

[0022] As a further description of the above technical solution:

[0023] The connecting assembly includes a socket, a socket block, a circular groove, a spring, a clamping block and a clamping slot. The lower end of the rotating shaft is fixedly connected to the socket, and the socket block is inserted into the socket. A circular groove is provided on the circumferential surface of the socket block, and a clamping block is slidably connected to the inside of the circular groove. A spring is fixedly connected to the inside of the circular groove, and the spring and the clamping block are fixedly connected. A clamping slot is provided on the inner wall of the socket, and the clamping slot cooperates with the clamping block.

[0024] As a further description of the above technical solution:

[0025] A limiting groove is provided on the inner wall of the socket, a limiting strip is slidably connected inside the limiting groove, and the limiting strip is fixedly connected to the plug-in block.

[0026] The present invention has the following beneficial effects:

[0027] 1. Compared with the existing technology, this differential case inner diameter detection mechanism is equipped with a lifting mechanism and a rotating mechanism. The lifting mechanism is used to drive the infrared rangefinder to move downward, so that the infrared rangefinder is inserted into the differential case, which makes it easier for the infrared rangefinder to detect the inner diameter of the differential case. At the same time, the infrared rangefinder can be driven to rotate with the cooperation of the rotating mechanism, so that the inner diameter of the differential case at the same latitude can be detected, thereby improving the accuracy of the detection.

[0028] 2. Compared with the existing technology, this differential case inner diameter detection mechanism, by providing a moving mechanism and an adjusting mechanism, can adjust the distance between the two clamping plates using the adjusting mechanism to facilitate the fixation of differential cases of different models; at the same time, with the cooperation of the moving mechanism, the clamping plates do not need an additional power source when performing the clamping operation. When the lifting mechanism is lowered, the clamping plates can be driven to move toward the differential case, thereby achieving the fixation of the differential case.

[0029] 3. Compared with the existing technology, this differential housing inner diameter detection mechanism is equipped with a socket, a socket block, a circular groove, a spring, a card block and a card slot. When the infrared rangefinder needs to be replaced, the detection rod is pulled down with force, and the card block will be disengaged from the card slot, making it convenient to remove the socket block from the inside of the socket, so that it is convenient to replace the new infrared rangefinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of a differential case inner diameter detection mechanism proposed by the present invention from a first perspective;

[0031] Figure 2 This is a schematic diagram of the overall structure of a differential case inner diameter detection mechanism proposed by the present invention from a second perspective;

[0032] Figure 3 This is a schematic structural diagram of a differential case inner diameter detection mechanism proposed by the present invention, viewed from the front and in section;

[0033] Figure 4 A differential case inner diameter detection mechanism proposed by the present invention Figure 3 Enlarged view of part A;

[0034] Figure 5 A differential case inner diameter detection mechanism proposed by the present invention Figure 3 Enlarged view of part B;

[0035] Figure 6 This is a schematic structural diagram of a differential case inner diameter detection mechanism proposed by the present invention, viewed from the right side in section;

[0036] Figure 7 A differential case inner diameter detection mechanism proposed by the present invention Figure 6 Enlarged view of part C in the middle;

[0037] Figure 8 This is a schematic structural diagram of a differential case inner diameter detection mechanism proposed in the present invention after the connecting components are disassembled.

[0038] Legend:

[0039] 1. Workbench; 2. Placement table; 3. Positioning hole; 4. Clamping plate; 5. Lifting mechanism; 501. Support column; 502. First motor; 503. Square slot; 504. First screw rod; 505. Cantilever; 6. Rotating mechanism; 601. Second motor; 602. Driving pulley; 603. Driven pulley; 604. Belt; 605. Rotating shaft; 7. Connecting assembly; 701. Socket; 702. Socket block; 703. Circular slot; 704. Spring; 705. Block ; 706, card slot; 8, detection rod; 9, infrared rangefinder; 10, moving mechanism; 1001, connecting plate; 1002, sliding rod; 1003, transmission plate; 1004, sliding hole; 1005, first moving plate; 11, adjusting mechanism; 1101, fixed plate; 1102, handle; 1103, second screw rod; 1104, second moving plate; 1105, moving rod; 12, slider; 13, slide groove; 14, limit bar; 15, limit groove; 16, installation groove. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] Reference Figures 1-8 The present invention provides a differential case inner diameter detection mechanism, which includes a workbench 1, a placing table 2 is fixedly connected to the upper end of the workbench 1, a positioning hole 3 is opened on the upper end surface of the placing table 2, and clamping plates 4 are provided on both sides of the upper end of the placing table 2; a lifting mechanism 5 is provided on the rear side of the upper end of the workbench 1, a rotating mechanism 6 is provided on the upper end of the lifting mechanism 5, a connecting component 7 is provided at the lower end of the rotating mechanism 6, a detection rod 8 is provided at the lower end of the connecting component 7, and an infrared rangefinder 9 is fixedly connected to the lower end of the detection rod 8; a moving mechanism 10 is provided on both sides of the upper end of the placing table 2, an adjusting mechanism 11 is provided inside the moving mechanism 10, and the moving mechanism 10 is connected to the clamping plate 4 through the adjusting mechanism 11.

[0042] Specifically, when in use, the end of the differential housing to be detected is inserted into the positioning hole 3, and then the lifting mechanism 5 is lowered. With the cooperation of the connecting assembly 7 and the rotating mechanism 6, the detection rod 8 can be driven to move downward, and then the infrared rangefinder 9 is driven to extend into the differential housing. After the infrared rangefinder 9 is extended into the differential housing, the inner diameter of the differential housing can be detected. At the same time, with the cooperation of the rotating mechanism 6, the inner diameter of the same latitude in the differential housing can be detected, thereby improving the accuracy of the detection; when the infrared rangefinder 9 needs to be replaced, the infrared rangefinder 9 can be replaced conveniently with the cooperation of the connecting assembly 7; at the same time, the descent of the lifting mechanism 5 can drive the clamping plate 4 to approach the differential housing with the cooperation of the moving mechanism 10 and the adjusting mechanism 11, thereby fixing the differential housing; and the existence of the adjusting mechanism 11 can adjust the distance between the two clamping plates 4, which is convenient for fixing differential housings of different models.

[0043] The lifting mechanism 5 includes a support column 501, a first motor 502, a square slot 503, a first screw rod 504 and a cantilever 505. The support column 501 is fixedly connected to the rear side of the upper end of the workbench 1. The front end surface of the support column 501 is provided with a square slot 503. The first screw rod 504 is rotatably connected inside the square slot 503. The upper end of the support column 501 is fixedly connected to the first motor 502. The output end of the first motor 502 is fixedly connected to the first screw rod 504. The circumferential surface of the first screw rod 504 is threadedly connected to the cantilever 505. The rear end of the cantilever 505 is located inside the square slot 503 and is slidably connected to the square slot 503. When working, the first motor 502 works. At this time, with the cooperation of the screw rod, the cantilever 505 can be driven to slide inside the square slot 503, thereby changing the height of the cantilever 505 to facilitate the insertion of the infrared rangefinder 9 into the differential housing.

[0044] The moving mechanism 10 includes a connecting plate 1001, a sliding rod 1002, a transmission plate 1003, a sliding hole 1004 and a first moving plate 1005. The connecting plate 1001 is fixedly connected on both sides of the cantilever 505. The first moving plate 1005 and the transmission plate 1003 are slidingly provided on the upper end of the placement table 2. The first moving plate 1005 and the transmission plate 1003 are fixedly connected. There are four transmission plates 1003, and the front and rear transmission plates 1003 are a group. The side surface of the transmission plate 1003 is provided with a sliding hole 1004. The sliding hole 1004 is slidably connected to the sliding rod 1002, and the sliding rod 1002 is fixedly connected to the connecting plate 1001; the sliding hole 1004 consists of two vertical sections and an inclined section. The inclined section is located between the two vertical sections. During operation, as the cantilever 505 moves downward, the connecting plate 1001 can drive the slide bar 1002 to slide inside the slide hole 1004. When the slide bar 1002 reaches the inclined section of the slide hole 1004, it will squeeze the transmission plate 1003 to move, thereby driving the first movable plate 1005 to move, which makes it convenient for the clamping plate 4 to clamp the differential housing. After the clamping plate 4 clamps the differential housing, the slide bar 1002 enters the vertical section at the lower end of the slide hole 1004. As the slide bar 1002 continues to move downward, the clamping plate 4 no longer clamps the differential housing, thereby facilitating the infrared rangefinder 9 to enter the differential housing, thereby facilitating the detection of the inner diameter of the differential housing.

[0045] The adjustment mechanism 11 includes a fixed plate 1101, a handle 1102, a second screw rod 1103, a second movable plate 1104 and a movable rod 1105. The fixed plate 1101 is fixedly connected between the front and rear transmission plates 1003. The second screw rod 1103 is rotatably connected inside the fixed plate 1101. The second screw rod 1103 is rotatably connected to the first movable plate 1005. The end of the second screw rod 1103 is fixedly connected to the handle 1102. The circumferential surface of the second screw rod 1103 is threadedly connected to the second movable plate 1104. The second movable plate 1104 is close to the clamping plate. 4 is fixedly connected to a moving rod 1105, which passes through the first moving plate 1005 and is slidably connected to the first moving plate 1005. The moving rod 1105 is fixedly connected to the clamping plate 4. When working, the handle 1102 is rotated. At this time, the second moving plate 1104 can be driven to move with the cooperation of the second screw rod 1103, and then the clamping plate 4 can be driven to move with the cooperation of the moving rod 1105. This makes it convenient to change the distance between the two clamping plates 4, thereby facilitating the fixation of different models of differential cases.

[0046] A slide groove 13 is provided on the upper end surface of the placement table 2, and a slider 12 is slidably connected inside the slide groove 13. The upper end of the slider 12 is fixedly connected to the first movable plate 1005. The end face shape of the slider 12 and the end face shape of the slide groove 13 are both dovetail groove shapes. During operation, by setting the slide groove 13 and the slider 12, the movement of the first movable plate 1005 can be limited with the cooperation of the slide groove 13 and the slider 12, so that the first movable plate 1005 can stably perform horizontal movement.

[0047] The rotating mechanism 6 includes a second motor 601, a driving wheel 602, a driven wheel 603, a belt 604 and a rotating shaft 605. The second motor 601 is installed inside the cantilever 505, and the output end of the second motor 601 passes through the upper end of the cantilever 505 and is rotatably connected to the cantilever 505. The output end of the second motor 601 is fixedly connected to the driving wheel 602; the rotating shaft 605 is rotatably connected inside the front end of the cantilever 505, and the upper end of the rotating shaft 605 is fixedly connected to the driven wheel 603, and the driven wheel 603 is connected to the driving wheel 602 by a belt 604. When working, the second motor 601 works. At this time, the rotating shaft 605 can be driven to rotate with the cooperation of the driving wheel 602, the driven wheel 603 and the belt 604, thereby driving the infrared rangefinder 9 to rotate, so that the inner diameter of the same latitude in the differential housing can be detected, thereby improving the accuracy of the detection.

[0048] A mounting groove 16 is provided on the lower end surface of the cantilever 505 , and the second motor 601 is located inside the mounting groove 16 . During operation, the mounting groove 16 facilitates the installation of the second motor 601 .

[0049] 706, and the spring 704 is fixedly connected to the card block 705. When the infrared rangefinder 9 is installed, the plug block 702 is aligned with the plug seat 701, and the plug block 702 is inserted into the plug seat 701. The circumferential surface of the plug block 702 is provided with a circular groove 703, and the card block 705 is slidably connected inside the circular groove 703. The spring 704 is fixedly connected to the circular groove 703, and the spring 704 is fixedly connected to the card block 705. The spring 704 and the card block 705 are fixedly connected. The inner wall of the plug seat 701 is provided with a card slot 706, and the card slot 706 cooperates with the card block 705. When working, when installing the infrared rangefinder 9, the plug block 702 is aligned with the plug seat 701, and then the plug block 702 is inserted into the plug seat 701. When the plug block 702 is inserted, when the card block 705 is in contact with the plug seat 701, the card block 705 is in contact with the plug seat 701. After the socket 701 contacts, the block 705 will be squeezed to shrink towards the inside of the circular groove 703, thereby compressing the spring 704. After the socket 702 is fully inserted into the socket 701, the block 705 corresponds to the slot 706. Under the action of the compression spring 704, the block 705 is easily inserted into the slot 706, so that the socket 702 is stably inserted into the socket 701, thus achieving the purpose of installing the infrared rangefinder 9; when the infrared rangefinder 9 needs to be replaced, the detection rod 8 is pulled downward with force. Since the contact end of the block 705 and the slot 706 is in an arc shape, the block 705 will be disengaged from the slot 706, thereby facilitating the removal of the socket 702 from the socket 701, thus facilitating the replacement of the new infrared rangefinder 9.

[0050] A limiting groove 15 is provided on the inner wall of the socket 701, and a limiting strip 14 is slidably connected inside the limiting groove 15. The limiting strip 14 is fixedly connected to the socket 702. When working, by setting the limiting groove 15 and the limiting strip 14, the limiting groove 15 and the limiting strip 14 cooperate to facilitate the correspondence between the card slot 706 and the card block 705.

[0051] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A differential case inner diameter detection mechanism, comprising a workbench (1), characterized in that: The upper end of the workbench (1) is fixedly connected to a placement table (2), a positioning hole (3) is provided on the upper end surface of the placement table (2), and clamping plates (4) are provided on both sides of the upper end of the placement table (2); A lifting mechanism (5) is arranged at the rear side of the upper end of the workbench (1); a rotating mechanism (6) is arranged at the upper end of the lifting mechanism (5); a connecting assembly (7) is arranged at the lower end of the rotating mechanism (6); a detection rod (8) is arranged at the lower end of the connecting assembly (7); and an infrared rangefinder (9) is fixedly connected to the lower end of the detection rod (8); A moving mechanism (10) is provided on both sides of the upper end of the placement platform (2), an adjusting mechanism (11) is provided inside the moving mechanism (10), and the moving mechanism (10) is connected to the clamping plate (4) via the adjusting mechanism (11).

2. A differential case inner diameter detection mechanism according to claim 1, characterized in that: The lifting mechanism (5) comprises a support column (501), a first motor (502), a square slot (503), a first screw rod (504) and a cantilever (505); the support column (501) is fixedly connected to the rear side of the upper end of the workbench (1); a square slot (503) is provided on the front end surface of the support column (501); the first screw rod (504) is rotatably connected inside the square slot (503); the first motor (502) is fixedly connected to the upper end of the support column (501); the output end of the first motor (502) is fixedly connected to the first screw rod (504); the circumferential surface of the first screw rod (504) is threadedly connected to the cantilever (505); the rear end of the cantilever (505) is located inside the square slot (503) and is slidably connected to the square slot (503).

3. A differential case inner diameter detection mechanism according to claim 2, characterized in that: The moving mechanism (10) comprises a connecting plate (1001), a sliding rod (1002), a transmission plate (1003), a sliding hole (1004) and a first moving plate (1005); both sides of the cantilever (505) are fixedly connected with the connecting plates (1001); the upper end of the placing table (2) is slidably provided with a first moving plate (1005) and a transmission plate (1003); the first moving plate (1005) and the transmission plate (1003) are fixedly connected; four transmission plates (1003) are provided, and the front and rear transmission plates (1003) form a group; a sliding hole (1004) is provided on the side end surface of the transmission plate (1003); the sliding rod (1002) is slidably connected inside the sliding hole (1004); the sliding rod (1002) and the connecting plate (1001) are fixedly connected.

4. A differential case inner diameter detection mechanism according to claim 3, characterized in that: The sliding hole (1004) consists of two vertical sections and one inclined section, and the inclined section is located between the two vertical sections.

5. A differential case inner diameter detection mechanism according to claim 3, characterized in that: The adjusting mechanism (11) comprises a fixed plate (1101), a handle (1102), a second screw rod (1103), a second movable plate (1104) and a movable rod (1105); the fixed plate (1101) is fixedly connected between the front and rear transmission plates (1003); the second screw rod (1103) is rotatably connected inside the fixed plate (1101); the second screw rod (1103) is rotatably connected to the first movable plate (1005); the second screw rod (1103) is rotatably connected to the first movable plate (1005); the second screw rod (1103) is rotatably connected to the second movable plate (1104); the second screw rod (1105) is rotatably connected to the second movable plate (1105); the second screw rod (1103) is rotatably connected to the first movable plate (1005); the second screw rod (1103) is rotatably connected to the second movable plate (1104 ... 1103) is fixedly connected to a handle (1102), the circumferential surface of the second screw rod (1103) is threadedly connected to a second movable plate (1104), a surface of the second movable plate (1104) close to the clamping plate (4) is fixedly connected to a movable rod (1105), the movable rod (1105) passes through the first movable plate (1005) and is slidably connected to the first movable plate (1005), and the movable rod (1105) is fixedly connected to the clamping plate (4).

6. A differential case inner diameter detection mechanism according to claim 3, characterized in that: The upper end surface of the placement platform (2) is provided with a slide groove (13), and a slider (12) is slidably connected inside the slide groove (13). The upper end of the slider (12) is fixedly connected to the first movable plate (1005), and the end surface shapes of the slider (12) and the slide groove (13) are both dovetail groove shapes.

7. A differential case inner diameter detection mechanism according to claim 2, characterized in that: The rotating mechanism (6) comprises a second motor (601), a driving wheel (602), a driven wheel (603), a belt (604) and a rotating shaft (605); the second motor (601) is installed inside the cantilever (505); the output end of the second motor (601) passes through the upper end of the cantilever (505) and is rotatably connected to the cantilever (505); the output end of the second motor (601) is fixedly connected to the driving wheel (602); the front end of the cantilever (505) is rotatably connected to the rotating shaft (605); the upper end of the rotating shaft (605) is fixedly connected to the driven wheel (603); the driven wheel (603) and the driving wheel (602) are connected via a belt (604).

8. A differential case inner diameter detection mechanism according to claim 7, characterized in that: The lower end surface of the cantilever (505) is provided with a mounting groove (16), and the second motor (601) is located inside the mounting groove (16).

9. A differential case inner diameter detection mechanism according to claim 7, characterized in that: The connection assembly (7) comprises a socket (701), a plug-in block (702), a circular groove (703), a spring (704), a clamping block (705) and a clamping groove (706); the lower end of the rotating shaft (605) is fixedly connected with the socket (701); the socket (701) is plugged with the plug-in block (702); a circular groove (703) is provided on the circumferential surface of the plug-in block (702); a clamping block (705) is slidably connected inside the circular groove (703); a spring (704) is fixedly connected inside the circular groove (703); the spring (704) and the clamping block (705) are fixedly connected; the inner wall of the socket (701) is provided with a clamping groove (706); the clamping groove (706) cooperates with the clamping block (705).

10. A differential case inner diameter detection mechanism according to claim 9, characterized in that: The inner wall of the plug socket (701) is provided with a limit groove (15), the limit groove (15) is slidably connected to a limit strip (14), and the limit strip (14) is fixedly connected to the plug block (702).

Images