A detection device for inner diameter of differential housing

Abstract

The present invention relates to the technical field of automatic measuring machines for differential housings, and discloses a device for detecting the inner diameter of a differential housing, comprising a base, a protective shell fixedly connected to the upper end of the base, a measuring machine body fixedly connected to the top of the base, an inspection door installed at the front end of the protective shell, a column fixedly connected to one side of the base, a motor fixedly connected to the top of the column, a turntable fixedly connected to the output end of the motor, upper slide grooves are provided on both sides of the turntable, and a lower slide groove is provided on the side of the column close to the measuring machine body, and the cross section of the lower slide groove is the same as the cross section of the upper slide groove. In this device for detecting the inner diameter of a differential housing, when the measuring machine body detects the inner diameter of the differential housing, one of the support plates is located below the measuring machine body, but there is still one support plate located outside the device, and the external mechanical arm can still load and unload the differential housing on the support plate (located outside the protective shell), which takes less time than the traditional loading and unloading process, and can effectively improve the detection efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of differential housing automatic measuring machines, in particular to a device for detecting the inner diameter of a differential housing. Background Art

[0002] The inner diameter of the differential case is one of the important indicators to ensure its performance and quality. The accuracy of the inner diameter directly affects the meshing of the internal gears of the differential, the transmission efficiency and the overall running stability. Therefore, in the production process of the differential case, the inner diameter of each differential case usually needs to be tested. When testing the inner diameter of the differential case, an automatic differential case measuring machine is generally used.

[0003] As in the prior art, the patent with the patent authorization announcement number CN219640907U discloses a fully automatic measuring device for a truck differential housing, including a working platform, on which a centering support column is installed, and a plurality of columns are installed at intervals on the working platform located outside the centering support column; static measuring components are symmetrically arranged on the working platform located outside the centering support column, and the probes at the ends of the static measuring components are located inside or outside the differential housing to measure the inner diameter and outer diameter of the differential housing; the device also includes a material receiving mechanism, which moves the differential housing downward and supports it on the columns and the centering support column; after the differential housing is downwardly supported on the columns and the centering support column by the material receiving mechanism, the static measuring component can measure the corresponding inner diameter and outer diameter of the differential housing, thereby realizing fully automatic measurement and effectively ensuring measurement efficiency and measurement effect.

[0004] Although the measuring device in the above patent realizes fully automatic measurement and effectively guarantees the measurement efficiency and measurement effect, there are still certain defects; when the current differential housing automatic measuring machine is in use, it is generally necessary to place the differential housing on the support ring before measurement can be performed. After the measurement is completed, the mechanical arm needs to first remove the differential housing on the support ring, and then use the mechanical arm to clamp the differential housing that has not been measured, and place the differential housing on the support ring before continuing to measure. During the entire loading and unloading process, the equipment will be in a shutdown waiting state, and the loading and unloading process will consume a lot of time, which is not conducive to improving the detection efficiency. Therefore, the existing differential housing automatic measuring machine needs to be improved. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a device for detecting the inner diameter of a differential housing to solve the problems raised in the background art, shorten the downtime of the equipment during loading and unloading, and thereby improve the detection efficiency.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for detecting the inner diameter of a differential housing, comprising a base, a protective shell being fixedly connected to the upper end of the base, a measuring machine body being fixedly connected to the top of the base, an inspection door being installed at the front end of the protective shell, a column being fixedly connected to one side of the base, a motor being fixedly connected to the top of the column, a turntable being fixedly connected to the output end of the motor, upper slide grooves being provided on both sides of the turntable, a lower slide groove being provided on the side of the column close to the measuring machine body, the cross section of the lower slide groove being the same as the cross section of the upper slide groove, sliders being slidably connected to the insides of the two upper slide grooves, a support plate being fixedly connected to the side of the slider away from the turntable, a hook block being fixedly connected to the side of the top of the support plate close to the slider, a cylinder being fixedly connected to the top of the protective shell, a push rod being fixedly connected to the output end of the cylinder, a connecting block being fixedly connected to the bottom of the push rod, the connecting block matching the hook block, and a push block fixedly connected to the connecting block being provided on the top of the hook block.

[0007] Furthermore, the hook block and the connecting block are both arranged in an arc shape, and the end of the hook block is arranged in an inverted U shape, and the end of the connecting block is arranged in a U shape.

[0008] Furthermore, a hole is opened in the middle of the sliding block, an upper sliding rod matching the hole is fixedly connected to the middle of the upper sliding groove, and a lower sliding rod matching the hole is fixedly connected to the middle of the lower sliding groove.

[0009] Furthermore, a plurality of anti-dropping blocks are fixedly connected to the top of the support plate, and the anti-dropping blocks are equidistantly distributed.

[0010] Furthermore, limiting grooves are provided on both sides of one side of the protective shell close to the column, the limiting grooves are internally slidably connected to limiting blocks, the top of the limiting block is fixedly connected with an elastic member, the top of the elastic member is fixedly connected to the end of the limiting groove, the side of the limiting block away from the column is fixedly connected with a positioning plate, the top of the positioning plate is fixedly connected with multiple positioning blocks, and the support plate is provided with multiple positioning holes matching the positioning blocks.

[0011] Furthermore, a reinforcing rib is fixedly connected to the bottom of the positioning plate, and a side wall of the reinforcing rib is fixedly connected to the limiting block.

[0012] Furthermore, a limiting rod is provided at the middle position of the elastic member, the limiting rod is slidably connected to the limiting block, and two ends of the limiting rod are respectively fixed to two ends of the limiting groove.

[0013] Furthermore, sealed doors are fixedly connected to both sides of the turntable, a through groove is provided at the bottom of the sealed door, a support ring fixed to the protective shell is provided in the through groove, the support ring is arc-shaped, a support rod is fixedly connected to the bottom of the support ring, and the other end of the support rod is fixed to the column.

[0014] Furthermore, a mounting groove is provided on the top of the support ring, and a plurality of rollers are rotatably connected inside the mounting groove, and the rollers are equidistantly distributed.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the detection device for the inner diameter of the differential housing, when the measuring machine body detects the inner diameter of the differential housing, one of the pallets is located below the measuring machine body, but there is still one pallet located outside the equipment. The external mechanical arm can still load and unload the differential housing on the pallet (located outside the protective housing), which takes less time than the traditional loading and unloading process and can effectively improve the detection efficiency.

[0017] 2. In the detection device for the inner diameter of the differential housing, when the support plate located inside the protective housing moves downward driven by the motor, the positioning block will be inserted into the positioning hole, thereby correcting the position of the differential housing on the support plate, reducing the probability of collision between the differential housing and the measuring machine body, making the measuring machine body less likely to be damaged due to collision.

[0018] 3. This differential housing inner diameter detection device is equipped with two support plates, so the external robotic arm only needs to load and unload the differential housing on the external support plate of the protective shell. This can reduce the stroke of the robotic arm, make the robotic arm have a longer service life, reduce the wear rate of the robotic arm, and also improve the accuracy of the differential housing placement.

[0019] 4. The detection device for the inner diameter of the differential housing is provided with a support ring to provide support for the side of the support plate away from the column to prevent the differential housing from bending the support plate, causing the support plate to be unable to operate normally.

[0020] 5. The detection device for the inner diameter of the differential case has a roller on the support ring. When the support plate rotates with the turntable, the support plate will not directly contact the support ring, thereby preventing the support plate from being damaged due to friction during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a partial cross-sectional view of the present invention as a whole when viewed from the left;

[0023] Figure 3 For the present invention Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0024] Figure 4 It is a transverse cross-sectional view of the present invention as a whole when viewed from the left;

[0025] Figure 5 For the present invention Figure 4 A schematic diagram of the local enlarged structure at B in the middle;

[0026] Figure 6 For the present invention Figure 4 A schematic diagram of the local enlarged structure at C in the middle;

[0027] Figure 7 It is a schematic diagram of the connection structure between the turntable and the closed door of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the support plate of the present invention;

[0029] Fig. 9 It is a schematic diagram of the connection structure between the support plate and the positioning plate of the present invention;

[0030] Fig.10 It is a schematic structural diagram of the support ring of the present invention.

[0031] In the figure: 1. base; 2. protective shell; 3. inspection door; 4. measuring machine body; 5. column; 6. motor; 7. turntable; 8. closed door; 9. through slot; 10. upper slide slot; 11. upper slide rod; 12. lower slide slot; 13. lower slide rod; 14. slider; 15. support plate; 16. anti-drop block; 17. hook block; 18. cylinder; 19. push rod; 20. connecting block; 21. push block; 22. limit slot; 23. limit rod; 24. limit block; 25. elastic part; 26. positioning plate; 27. reinforcing rib; 28. positioning hole; 29. ​​positioning block; 30. support ring; 31. mounting slot; 32. roller; 33. support rod; 34. differential shell. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] See also Figures 1 to 10A detection device for the inner diameter of a differential housing comprises a base 1, a protective shell 2 is fixedly connected to the upper end of the base 1, a measuring machine body 4 is fixedly connected to the top of the base 1, an inspection door 3 is installed at the front end of the protective shell 2, a column 5 is fixedly connected to one side of the base 1, a motor 6 is fixedly connected to the top of the column 5, a turntable 7 is fixedly connected to the output end of the motor 6, upper slide grooves 10 are provided on both sides of the turntable 7, a lower slide groove 12 is provided on the side of the column 5 close to the measuring machine body 4, and the cross section of the lower slide groove 12 is the same as that of the upper slide groove 10 has the same cross-section, and the interiors of the two upper slide grooves 10 are slidably connected with sliders 14, and the side of the slider 14 away from the turntable 7 is fixedly connected to a support plate 15, and the top of the support plate 15 is fixedly connected to the side close to the slider 14, and the top of the protective shell 2 is fixedly connected to a cylinder 18, and the output end of the cylinder 18 is fixedly connected to a push rod 19, and the bottom of the push rod 19 is fixedly connected to a connecting block 20, and the connecting block 20 matches the hook block 17, and the top of the hook block 17 is provided with a push block 21 fixedly connected to the connecting block 20.

[0034] The detection device for the inner diameter of the differential housing of the present invention only needs an external mechanical arm to place the differential housing 34 on a support plate 15 away from the measuring machine body 4 when loading the equipment, and then start the motor 6, which will drive the turntable 7 to rotate 180°, and rotate the support plate 15 and the differential housing 34 to the inside of the protective shell 2. During the rotation, the hook block 17 will hook on the connecting block 20, thereby preventing the support plate 15 from falling by itself, causing the differential housing 34 to fall on the measuring machine body 4. After the turntable 7 rotates 180°, the hook block 17 is completely hooked on the connecting block 20, and then the cylinder 18 is started, and the cylinder 18 will drive the push rod 19 and the connecting block 20 to move downward, and the hook block 17 and the support plate 15 connected to the connecting block 20 will also move downward. , and moves downward until the differential shell 34 is on the measuring machine body 4. At this time, the cylinder 18 is stopped, and the inner diameter of the differential shell 34 can be detected by the measuring machine body 4. In the process of the cylinder 18 driving the pallet 15 (located inside the protective shell 2) to move downward and the measuring machine body 4 detecting the differential shell 34, the external robotic arm can load or unload the differential shell 34 on the other pallet 15 (located outside the protective shell 2). After the measuring machine body 4 completes the detection of the differential shell 34, the cylinder 18 can be started again. The cylinder 18 will move the pallet 15 (located inside the protective shell 2) upward until the slider 14 of the pallet 15 (located inside the protective shell 2) is in the upper slide groove 10 of the turntable 7, and then repeat the above steps. This operation procedure allows the external robotic arm to load and unload materials when the measuring machine body 4 is working, reducing the downtime required during the loading and unloading process of the differential shell 34 and improving the detection efficiency. At the same time, the base 1, protective shell 2, motor 6 and cylinder 18 involved in the present invention are all existing mature products, and the electronic equipment therein is connected to the control system of the measuring machine body 4. Since these connection methods belong to mature technologies, they are not described in detail here; in addition, the structure of the measuring machine body 4 in the present invention is similar to the structure of the fully automatic measuring device for the truck differential housing disclosed in the patent authorization announcement number CN219640907U, so no further elaboration is made here.

[0035] As a preferred technical solution of the present invention, the hook block 17 and the connecting block 20 are both arc-shaped, and the end of the hook block 17 is an inverted U-shaped, and the end of the connecting block 20 is a U-shaped.

[0036] Specifically, after the hook block 17 with an inverted U-shape is hooked and connected with the U-shaped connecting block 20 , it is not easy to be separated from the vertical direction, so as to prevent the support plate 15 from falling directly.

[0037] As a preferred technical solution of the present invention, a hole is opened in the middle of the slider 14, an upper slide rod 11 matching the hole is fixedly connected to the middle of the upper slide groove 10, and a lower slide rod 13 matching the hole is fixedly connected to the middle of the lower slide groove 12.

[0038] Specifically, the upper slide bar 11 and the lower slide bar 13 further restrict the slider 14, making it less likely for the slider 14 to tilt when sliding up and down, thereby preventing the slider 14 from causing the support plate 15 to tilt together, causing the differential housing 34 to slide off the support plate 15 and then damaging the measuring machine body 4.

[0039] As a preferred technical solution of the present invention, a plurality of anti-slip blocks 16 are fixedly connected to the top of the support plate 15, and the anti-slip blocks 16 are evenly distributed.

[0040] Specifically, the equidistantly distributed anti-slip blocks 16 can provide preliminary restrictions on the differential shell 34 placed on the pallet 15, and the diameter of the circle surrounded by the multiple anti-slip blocks 16 is much larger than the diameter of the bottom of the differential shell 34. Even if the robot arm has a certain error when placing the differential shell 34 after long-term use, the differential shell 34 can still be stably placed on the pallet 15.

[0041] As a preferred technical solution of the present invention, limiting grooves 22 are provided on both sides of the protective shell 2 close to the column 5, the internal sliding connection of the limiting groove 22 is connected to the limiting block 24, the top of the limiting block 24 is fixedly connected with an elastic member 25, the top of the elastic member 25 is fixedly connected to the end of the limiting groove 22, the side of the limiting block 24 away from the column 5 is fixedly connected with a positioning plate 26, the top of the positioning plate 26 is fixedly connected with a plurality of positioning blocks 29, and the support plate 15 is provided with a plurality of positioning holes 28 matching the positioning blocks 29.

[0042] Specifically, when the support plate 15 located inside the protective shell 2 moves downward, the positioning block 29 will first be inserted into the positioning hole 28, and the top of the positioning block 29 will contact the differential shell 34 after passing through the positioning hole 28. The differential shell 34 is guided and restricted by the chamfer at the top of the positioning block 29, so that the differential shell 34 moves to the center position of the support plate 15, which is convenient for the differential shell 34 to be sleeved on the measuring machine body 4. When the support plate 15 moves upward, the elastic member 25 will pull the positioning plate 26 upward to return the positioning plate 26 to its original position, so that the positioning block 29 can be inserted into the positioning hole 28 again when the next support plate 15 moves downward, thereby correcting the position of the differential shell 34.

[0043] As a preferred technical solution of the present invention, a reinforcing rib 27 is fixed to the bottom of the positioning plate 26, and the side wall of the reinforcing rib 27 is fixed to the limit block 24. The bottom of the positioning plate 26 is reinforced by the reinforcing rib 27 to prevent the positioning plate 26 from tilting and bending.

[0044] As a preferred technical solution of the present invention, a limiting rod 23 is provided in the middle of the elastic member 25, the limiting rod 23 is slidably connected to the limiting block 24, and the two ends of the limiting rod 23 are respectively fixed to the two ends of the limiting groove 22. The limiting rod 23 limits the limiting block 24 to prevent the limiting block 24 from tilting during the movement, and the limiting rod 23 can position and limit the elastic member 25 to prevent the elastic member 25 from being separated from the limiting groove 22.

[0045] As a preferred technical solution of the present invention, a closed door 8 is fixedly connected to both sides of the turntable 7, a through groove 9 is provided at the bottom of the closed door 8, a support ring 30 fixed to the protective shell 2 is provided in the through groove 9, the support ring 30 is arc-shaped, a support rod 33 is fixedly connected to the bottom of the support ring 30, and the other end of the support rod 33 is fixedly connected to the column 5.

[0046] Specifically, a support ring 30 is provided to provide support for the side of the pallet 15 away from the column 5 to prevent the differential shell 34 from bending the side of the pallet 15 away from the column 5, causing the pallet 15 to fail to operate normally or the differential shell 34 to slide off the pallet 15 and be broken.

[0047] As a preferred technical solution of the present invention, a mounting groove 31 is provided on the top of the support ring 30, and a plurality of rollers 32 are rotatably connected inside the mounting groove 31, and the rollers 32 are equidistantly distributed.

[0048] Specifically, a roller 32 is provided on the support ring 30. When the support plate 15 rotates with the turntable 7, the support plate 15 will contact the roller 32. The rolling friction of the roller 32 replaces the sliding friction between the support ring 30 and the support plate 15, so that the support plate 15 and the support ring 30 are not easily damaged by friction during long-term use.

[0049] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A differential case inner diameter detection device, comprising a base (1), a protective shell (2) being fixedly connected to the upper end of the base (1), and a measuring machine body (4) being fixedly connected to the top of the base (1), characterized in that: An inspection door (3) is installed at the front end of the protective shell (2), a column (5) is fixedly connected to one side of the base (1), a motor (6) is fixedly connected to the top of the column (5), a turntable (7) is fixedly connected to the output end of the motor (6), upper slide grooves (10) are provided on both sides of the turntable (7), a lower slide groove (12) is provided on the side of the column (5) close to the measuring machine body (4), the cross section of the lower slide groove (12) is the same as the cross section of the upper slide groove (10), and the interiors of the two upper slide grooves (10) are slidably connected with sliders ( 14), a support plate (15) is fixedly connected to the side of the slider (14) away from the turntable (7), a hook block (17) is fixedly connected to the top of the support plate (15) close to the slider (14), a cylinder (18) is fixedly connected to the top of the protective shell (2), a push rod (19) is fixedly connected to the output end of the cylinder (18), a connecting block (20) is fixedly connected to the bottom of the push rod (19), the connecting block (20) matches the hook block (17), and a push block (21) fixedly connected to the connecting block (20) is provided on the top of the hook block (17).

2. A differential case inner diameter detection device according to claim 1, characterized in that: The hook block (17) and the connection block (20) are both arranged in an arc shape, and the end of the hook block (17) is arranged in an inverted U shape, while the end of the connection block (20) is arranged in a U shape.

3. The device for detecting the inner diameter of a differential case according to claim 1, characterized in that: A hole is provided in the middle of the sliding block (14), an upper sliding rod (11) matching the hole is fixedly connected in the middle of the upper sliding groove (10), and a lower sliding rod (13) matching the hole is fixedly connected in the middle of the lower sliding groove (12).

4. The device for detecting the inner diameter of a differential case according to claim 1, characterized in that: A plurality of anti-slip blocks (16) are fixedly connected to the top of the support plate (15), and the anti-slip blocks (16) are distributed at equal intervals.

5. The device for detecting the inner diameter of a differential case according to claim 1, characterized in that: The protective shell (2) has limit slots (22) on both sides of a side close to the column (5), the limit slots (22) are slidably connected to limit blocks (24) inside, the top of the limit block (24) is fixedly connected to an elastic member (25), the top of the elastic member (25) is fixedly connected to the end of the limit slot (22), the side of the limit block (24) away from the column (5) is fixedly connected to a positioning plate (26), the top of the positioning plate (26) is fixedly connected to a plurality of positioning blocks (29), and the support plate (15) is provided with a plurality of positioning holes (28) matching the positioning blocks (29).

6. The device for detecting the inner diameter of a differential case according to claim 5, characterized in that: A reinforcing rib (27) is fixedly connected to the bottom of the positioning plate (26), and a side wall of the reinforcing rib (27) is fixedly connected to the limiting block (24).

7. The device for detecting the inner diameter of a differential case according to claim 5, characterized in that: A limiting rod (23) is provided in the middle of the elastic member (25), the limiting rod (23) is slidably connected to the limiting block (24), and the two ends of the limiting rod (23) are respectively fixedly connected to the two ends of the limiting groove (22).

8. The device for detecting the inner diameter of a differential case according to claim 1, characterized in that: Sealed doors (8) are fixedly connected to both sides of the turntable (7); a through slot (9) is provided at the bottom of the sealed door (8); a support ring (30) fixedly connected to the protective shell (2) is provided in the through slot (9); the support ring (30) is arranged in an arc shape; a support rod (33) is fixedly connected to the bottom of the support ring (30); the other end of the support rod (33) is fixedly connected to the column (5).

9. The device for detecting the inner diameter of a differential case according to claim 8, characterized in that: A mounting groove (31) is provided at the top of the support ring (30), and a plurality of rollers (32) are rotatably connected inside the mounting groove (31), and the rollers (32) are distributed at equal distances.

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