Quality detection device for engineering gear

Abstract

The invention relates to the technical field of gear detection, in particular to a quality detection device for an engineering gear, which comprises a detection table, a fixed frame fixedly connected to the top end of the detection table, a lifter arranged behind the fixed frame, a detection plate transversely and slidably connected to the inner side of the fixed frame, and a detection mechanism arranged between the detection plate and the lifter and used for measuring the meshing degree of the gear. A side frame is fixedly connected to the inner side of the fixing frame, a base plate is fixedly connected to the bottom of the side frame, a disc is rotatably connected to the top end of the base plate, and a sliding block is slidably connected to the top end of the disc. And then, under the operation of the locking mechanism, the insertion cylinder is inserted into the inner side of the gear, and the gear is locked on the push ring, so that automatic feeding of the device is realized, manual tightening by detection personnel for feeding is not needed, and the convenience performance of the device is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of gear inspection technology, and in particular to a quality inspection device for engineering gears. Background Technology

[0002] Gears are core components for transmitting power and motion in fields such as engineering machinery, wind power, mining, metallurgy, and plug-in hybrid electric vehicles. In plug-in hybrid drive systems, the power switching and coupling between the engine, drive motor, and generator are all accomplished by high-precision gear pairs. The meshing quality directly determines the smoothness of gear shifting, electric drive noise, and overall energy consumption of the vehicle. If there are deviations in tooth profile, pitch, or direction, it will not only cause impact, uneven load, or even tooth breakage during high-speed switching, but also amplify the high-frequency whine of the motor and reduce driving comfort. Therefore, every set of gears, whether it is the engine crankshaft gear, the motor reduction gear, or the hybrid-specific transmission gear, must undergo strict meshing tests before leaving the factory to ensure that plug-in hybrid electric vehicles can achieve quiet, efficient, and long-life power transmission under all operating conditions.

[0003] The commonly used double-meshing tester fixes a standard gear on a floating slide and uses spring force to keep it meshing with the gear under test without backlash. When the two teeth rotate under light load, the small fluctuations in the center distance are converted into electrical signals by sensors. After amplification and filtering, the error curve is plotted, which can determine the machining accuracy level of the tooth surface. This method has a simple structure, low cost, and can quickly provide comprehensive results on the production site, and is adopted by most domestic enterprises.

[0004] However, traditional double-grip testers still rely on manual loading. Operators need to stop the machine, place the gears on the positioning mandrel, manually tighten and center them, and then start the measurement. After the test is completed, the machine must be stopped again to unload the parts. Frequent loading and unloading results in high labor intensity, long batch testing cycle time, low efficiency, and difficulty in meeting the needs of continuous production.

[0005] Therefore, a quality inspection device for engineering gears is proposed to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the prior art by providing a quality inspection device for engineering gears.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a quality inspection device for engineering gears, comprising an inspection platform, a fixed frame fixedly connected to the top of the inspection platform, a lifting device provided behind the fixed frame, an inspection plate slidably connected to the inner side of the fixed frame, an inspection mechanism for measuring gear meshing degree provided between the inspection plate and the lifting device, a side frame fixedly connected to the inner side of the fixed frame, a chassis fixedly connected to the bottom of the side frame, a disc rotatably connected to the top of the chassis, a slider slidably connected to the top of the disc, a fixed platform fixedly connected to the top of the side frame, a feeding groove opened at the top of the fixed platform, a through groove opened through the top of the feeding groove, a push ring provided inside the through groove, a insert for inserting into the inner side of the gear slidably connected to the inner side of the push ring, a pair of fixed plates fixedly connected to the top of the disc, the insert slidably connected between the fixed plates, and a locking mechanism for moving the insert upward and locking the gear position on the disc; A storage frame is fixedly connected to the side wall of the fixed frame. A circular groove adapted to the gear is opened at the top of the storage frame. An outlet is opened on the side wall of the circular groove near the feeding trough. An upper electromagnet is installed through the inner wall of the circular groove away from the outlet. A toothed groove that meshes with the gear is opened on the side wall of the upper electromagnet. A side electric telescopic cylinder is fixedly connected to the side wall of the storage frame. The output end of the side electric telescopic cylinder passes through the inner side of the storage frame and is fixedly connected to the top of the side wall of the upper electromagnet. Several toothed blocks are fixedly connected to the inner side of the storage frame relative to the position above the upper electromagnet.

[0008] In the above technical solution, the locking mechanism further includes a cross, which is slidably connected to the bottom end of the insert. Round rods are fixedly connected to both sides of the bottom end of the outer wall of the cross. A pair of lower rods are fixedly connected to the bottom end of the insert. A transverse groove is opened through the top of the outer wall of the insert. Slide plates are slidably connected longitudinally to both sides of the inner wall of the transverse groove. Straight grooves are opened through the side walls of the slide plates. L-shaped grooves are opened on both sides of the inner wall of the transverse groove. A pair of locking blocks are slidably connected laterally between the inner sides of the two slide plates. Inclined grooves are opened in the middle of the side of the locking blocks that are close to each other. Guide rods are fixedly connected to both sides of the outer wall of the locking blocks, and the guide rods pass through the straight grooves and are inserted into the inner side of the L-shaped grooves. A driving block is fixedly connected to the top of the cross, and the bottom ends of the driving block are inclined on both sides. A pressing plate is fixedly connected to the top of the slider relative to the lower rod, and the side walls of the pressing plate are inclined.

[0009] In the above technical solution, a pair of upper springs are fixedly connected between the top end of the insert and the top end of the slide plate, a pair of lower springs are fixedly connected between the guide rods, the inclined surface of the inclined groove is in contact with the inclined surface of the drive block, and a pair of return springs are fixedly connected between the bottom end of the cross and the bottom end of the insert.

[0010] In the above technical solution, side plates are fixedly connected to each other on the side closest to each other between the extrusion plates. The bottom ends of the side walls of the side plates are inclined, and the inclined surfaces of the side plates and the extrusion plates are on the same side.

[0011] In the above technical solution, a transverse groove is further provided at the top of the disc, a lead screw is rotatably connected to the inner side of the transverse groove, a drive motor is fixedly connected to the side wall of the disc, the output end of the drive motor passes through the inner side of the transverse groove and is fixedly connected to the side wall of the lead screw, the bottom end of the slider is slidably connected to the inner side of the transverse groove, and the lead screw is threadedly connected to the side wall of the slider.

[0012] In the above technical solution, a lower electromagnet is fixedly connected to the top of the chassis relative to the outer wall of the disc, and the disc is made of iron.

[0013] In the above technical solution, further, a discharge frame is fixedly connected to the front side of the fixed platform at an incline, a pair of lower electric telescopic cylinders are fixedly connected to the top of the disc, the output end of the lower electric telescopic cylinder is fixedly connected to the bottom end of the push ring, a rear plate is fixedly connected to the rear side of the top of the fixed platform, the rear plate is located at the rear side of the discharge frame, an upper electric telescopic cylinder is fixedly connected to the rear side of the rear plate, and the output end of the upper electric telescopic cylinder passes through the front side of the rear plate and is fixedly connected to a feeding plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention, through the arrangement of storage frame, locking mechanism and disc, etc., only requires the gears to be placed in the storage frame in sequence. Driven by the side electric telescopic cylinder, the gears are positioned and pushed above the push ring. Then, under the operation of the locking mechanism, the insert can be inserted into the inside of the gear and the gear is locked on the push ring, thereby realizing automatic feeding of the device. There is no need for inspection personnel to manually tighten the feeding, which greatly improves the convenience of the device.

[0015] 2. By setting up structures such as a discharge frame, a lower electric telescopic cylinder, and an upper electric telescopic cylinder, the present invention can automatically push out the gear after the gear inspection is completed, and then push the gear into the discharge frame for discharge, thereby realizing automatic material unloading of the device without the need for inspection personnel to remove the gear, further improving the convenience of the device. Attached Figure Description

[0016] Figure 1 This is a frontal perspective view of the detection device of the present invention; Figure 2 This is a three-dimensional side view of the fixing frame and storage frame of the present invention; Figure 3 Appendix of the present invention Figure 2 A magnified view of the structure at point A in the middle; Figure 4This is a schematic diagram of the overall appearance structure of the disc and the insert of the present invention; Figure 5 This is a bottom-view perspective view of the fixed platform and disc structure of the present invention; Figure 6 This is a full-section perspective view of the storage frame of the present invention. Figure 7 This is a bottom-view perspective view of the insert and lower electric telescopic cylinder of the present invention. Figure 8 This is a partial three-dimensional structural diagram of the slider, drive motor and extrusion plate of the present invention; Figure 9 This is a schematic diagram of the side half-section three-dimensional structure of the insert of the present invention; Figure 10 Appendix of the present invention Figure 9 A magnified schematic diagram of the structure at point B in the middle; Figure 11 This is a schematic diagram of the three-dimensional structure of the cross, locking block and insert of the present invention in half section.

[0017] In the diagram: 1. Inspection table; 2. Fixed frame; 3. Lifter; 4. Inspection plate; 5. Inspection mechanism; 6. Side frame; 7. Chassis; 8. Disc; 9. Slider; 10. Fixed table; 11. Feed chute; 12. Push ring; 13. Insert cylinder; 14. Fixed plate; 15. Storage frame; 16. Circular groove; 17. Outlet; 18. Upper electromagnet; 19. Side electric telescopic cylinder; 20. Tooth block; 21. Cross; 22. Round rod; 23. 24. Lower rod; 25. Slide plate; 26. Straight groove; 27. L-shaped groove; 28. Locking block; 29. ​​Guide rod; 30. Drive block; 31. Extrusion plate; 32. Upper spring; 33. Lower spring; 34. Inclined groove; 35. Return spring; 36. Side plate; 37. Lead screw; 38. Drive motor; 39. Lower electromagnet; 40. Discharge frame; 41. Lower electric telescopic cylinder; 42. Rear plate; 43. Upper electric telescopic cylinder; 44. Discharge plate. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0020] In practical use, it was found that traditional double-grip testers still rely on manual feeding. Operators need to stop the machine, place the gear on the positioning mandrel, manually tighten and center it, and then start the measurement. After the test is completed, the machine must be stopped again to unload the parts. Frequent loading and unloading results in high labor intensity, long batch testing cycle time, low efficiency, and difficulty in meeting the needs of continuous production. To solve the above problems, the following structure was invented.

[0021] like Figures 1-11 The device shown is a quality inspection device for engineering gears, including a test platform 1, a fixed frame 2 fixedly connected to the top of the test platform 1, a lifter 3 located behind the fixed frame 2, a test plate 4 slidably connected to the inner side of the fixed frame 2, and a test mechanism 5 for measuring gear meshing degree between the test plate 4 and the lifter 3. The test mechanism 5 uses a standard gear as a scale and rotates with the gear under test without backlash. When the two teeth rotate synchronously under light load, the tooth profile error causes a slight change in the instantaneous center distance. The instrument continuously collects this variable through an angular displacement encoder or an inductive sensor and converts it into a radial comprehensive error curve. At the same time, a circular grating records the signal of each tooth passing through, which is used to separate the single deviation of tooth pitch and tooth profile. No manual intervention is required throughout the process. After one rotation, the total meshing error, the radial deviation of one tooth, and the eccentricity can be output to complete the gear accuracy grade determination. A side frame 6 is fixedly connected to the inner side of the fixed frame 2. A base plate 7 is fixedly connected to the bottom of the side frame 6. A disc 8 is rotatably connected to the top of the base plate 7. A slider 9 is slidably connected to the top of the disc 8. A fixed platform 10 is fixedly connected to the top of the side frame 6. A feeding groove 11 is opened at the top of the fixed platform 10. A through groove is opened through the top of the feeding groove 11. A push ring 12 is provided inside the through groove. A tube 13 for inserting into the inside of the gear is slidably connected to the inner side of the push ring 12. A key block adapted to the keyway of the gear is provided on the tube 13, which can drive the tube 13 to rotate when the gear rotates, ensuring the stability during the detection process. A pair of fixed plates 14 are fixedly connected to the top of the disc 8. The tube 13 is slidably connected between the fixed plates 14. A locking mechanism is provided on the disc 8 for moving the tube 13 upward and locking the gear position. A storage frame 15 is fixedly connected to the side wall of the fixed frame 2. A circular groove 16 adapted to the gear is opened at the top of the storage frame 15. An outlet 17 is opened on the side wall of the circular groove 16 near the feeding groove 11. An upper electromagnet 18 is installed through the inner wall of the circular groove 16 away from the outlet 17. A toothed groove that meshes with the gear is opened on the side wall of the upper electromagnet 18. A side electric telescopic cylinder 19 is fixedly connected to the side wall of the storage frame 15. The output end of the side electric telescopic cylinder 19 passes through the inner side of the storage frame 15 and is fixedly connected to the top of the side wall of the upper electromagnet 18. Several toothed blocks 20 are fixedly connected to the inner side of the storage frame 15 relative to the position above the upper electromagnet 18. By setting the toothed blocks 20, the gear placed in the storage frame 15 can be positioned to ensure that when the upper electromagnet 18 pushes the gear to the standard gear, it can directly mesh with the standard gear, thereby realizing the automatic meshing feeding of the device. The locking mechanism includes a cross 21, which is slidably connected to the bottom of the insert 13. Round rods 22 are fixedly connected to both sides of the bottom of the outer wall of the cross 21. A pair of lower rods 23 are fixedly connected to the bottom of the insert 13. A transverse groove is opened through the top of the outer wall of the insert 13. Slide plates 24 are slidably connected longitudinally to both sides of the inner wall of the transverse groove. Straight grooves 25 are opened through the side walls of the slide plates 24. L-shaped grooves 26 are opened on both sides of the inner wall of the transverse groove. A pair of locking blocks 27 are slidably connected between the inner sides of the two slide plates 24. An inclined groove 33 is opened in the middle of the side of the locking blocks 27 that are close to each other. Guide rods 28 are fixedly connected to both sides of the outer wall of the locking blocks 27. The guide rods 28 pass through the straight grooves 25 and are inserted into the inner side of the L-shaped grooves 26. A drive block 29 is fixedly connected to the top of the cross 21. The bottom of the drive block 29 is inclined on both sides. A pressing plate 30 is fixedly connected to the top of the slider 9 relative to the position below the lower rods 23. The side wall of the pressing plate 30 is inclined. A pair of upper springs 31 are fixedly connected between the top end of the inner tube 13 and the top end of the slide plate 24, a pair of lower springs 32 are fixedly connected between the guide rods 28, the inclined surface of the inclined groove 33 fits against the inclined surface of the drive block 29, and a pair of return springs 34 are fixedly connected between the bottom end of the cross 21 and the bottom end of the inner tube 13. Side plates 35 are fixedly connected to each other on the side closest to each other between the extrusion plates 30. The bottom ends of the side walls of the side plates 35 are all inclined, and the inclined surfaces of the side plates 35 and the extrusion plates 30 are on the same side. A transverse groove is opened through the top of the disc 8. A lead screw 36 is rotatably connected to the inside of the transverse groove. A drive motor 37 is fixedly connected to the side wall of the disc 8. The output end of the drive motor 37 passes through the inside of the transverse groove and is fixedly connected to the side wall of the lead screw 36. The bottom end of the slider 9 is slidably connected to the inside of the transverse groove, and the lead screw 36 is threadedly connected to the side wall of the slider 9. A lower electromagnet 38 is fixedly connected to the top of the chassis 7 relative to the outer wall of the disc 8. The disc 8 is made of iron. By setting the lower electromagnet 38, the rotation position of the disc 8 can be positioned when the gear detection is completed and the rotation stops, so as to ensure the normal ejection of the gear and the accurate positioning of the subsequent gear. During gear testing, the gears to be tested are first placed sequentially into the circular slots 16 on the storage frame 15, and then inserted into the gear block 20. Simultaneously, the gears with their keyways facing the gear block 20 are placed into the circular slots 16. The gears then fall to the bottom under their own weight, with the bottom gear positioned next to the upper electromagnet 18 and inserted into the tooth groove of the upper electromagnet 18. After the gears are placed, the side electric telescopic cylinder 19 is activated to move the upper electromagnet 18. At this time, the upper electromagnet... When the iron 18 is energized, it attracts and fixes the bottom gear, thereby pushing the gear out from the outlet 17 and then into the feeding trough 11. During this process, the gear in the circular groove 16 is restricted by the output end of the side electric telescopic cylinder 19 and will not fall down. Then the side electric telescopic cylinder 19 pushes the gear to the position above the push ring 12 and aligns it with the center of the push ring 12. This controls the drive motor 37 to start and drive the lead screw 36 to rotate, thereby driving the threaded slider 9 to move, and at the same time driving the extrusion plate 30 and the side plate 35 to move. During this process, since the insert 13 can only slide longitudinally between the fixed plates 14, during the transverse movement of the extrusion plate 30, the inclined surface of the extrusion plate 30 will press the lower rod 23, causing the insert 13 to move upward and thus insert the insert 13 into the inside of the gear. At the same time, it will drive the cross 21 and the locking block 27 to move upward together. Then, when the lower rod 23 moves out of the inclined surface of the extrusion plate 30 and moves to the top of the extrusion plate 30, it will completely push out the insert 13. At the same time, it will drive the locking block 27 to move above the gear. Then, as the slider 9 continues to move, the slider 9 will drive the extrusion plate 30 and the side plate 35 to continue to move, and the top of the extrusion plate 30 will continue to press the lower rod 23 and the insert 13. Subsequently, the side plate 35 moves above the round rod 22, and the inclined surface of the side plate 35 presses the round rod 22 downward, simultaneously causing the cross 21 to move downward and compressing the return spring 34. The downward movement of the cross 21 then causes the drive block 29 to move downward. During this process, since the guide rod 28 is inserted into the lateral end of the L-shaped groove 26, it can only slide laterally. Therefore, the inclined surface of the drive block 29 presses against the inclined groove 33 on the locking block 27, causing the locking block 27 to slide to both sides, and causing the guide rod 28 to slide inside the L-shaped groove 26 and the straight groove 25, while simultaneously stretching the lower spring 32. Then, the guide rod 28 moves... When the cross 21 moves to the corner of the L-shaped groove 26, the locking block 27 extends completely from the horizontal groove and moves above the gear. However, as the cross 21 continues to move downward, it will drive the drive block 29 to move downward. At this time, since the guide rod 28 is at the corner of the L-shaped groove 26, it can only move downward. Then, under the downward pressure of the drive block 29, the locking block 27 will be pushed downward, and the guide rod 28 will slide downward in the L-shaped groove 26. At the same time, the slide plate 24 will move downward, and the upper spring 31 will be gradually stretched. Thus, through the gradual downward movement of the locking block 27, the gear will be tightly pressed onto the push ring 12, thereby achieving the locking and fixing of the gear. Finally, the drive motor 37 can be stopped and the power supply of the upper electromagnet 18 can be turned off. Then, the side electric telescopic cylinder 19 can be controlled to drive the upper electromagnet 18 to reset. After the reset, the restriction on the gear in the circular groove 16 will be released, and the gear in the circular groove 16 will fall to the discharge position under its own gravity. Then, the detection mechanism 5 can be started to detect the gear. During the detection process, the detection gear will rotate. At this time, since the key block on the insert 13 is inserted into the keyway of the gear, it will drive the insert 13 to rotate together, which will then drive the disc 8 and the push ring 12 to rotate together through the fixing plate 14.

[0022] In summary, with the above structural design, the gears can be placed sequentially in the storage box 15, and driven by the side electric telescopic cylinder 19, the gears can be positioned and pushed above the push ring 12. Then, under the operation of the locking mechanism, the insert 13 can be inserted into the inside of the gear, and the gear can be locked on the push ring 12, thereby realizing automatic feeding of the device without the need for inspection personnel to manually tighten the feed, which greatly improves the convenience of the device.

[0023] Based on the above embodiments, it was found during use that although the above structure can realize automatic feeding of the device, after the inspection is completed, the inspector still needs to take out the inspected gear, which is quite troublesome. In order to solve the above problems, the above structure has been further improved.

[0024] A discharge frame 39 is fixedly connected to the front side of the fixed platform 10 at an angle. A pair of lower electric telescopic cylinders 40 are fixedly connected to the top of the disc 8. The output end of the lower electric telescopic cylinder 40 is fixedly connected to the bottom end of the push ring 12. A rear plate 41 is fixedly connected to the rear side of the top of the fixed platform 10. The rear plate 41 is located behind the discharge frame 39. An upper electric telescopic cylinder 42 is fixedly connected to the rear side of the rear plate 41. The output end of the upper electric telescopic cylinder 42 passes through the front side of the rear plate 41 and is fixedly connected to the discharge plate 43. Finally, after the gear meshing degree test is completed, the detection mechanism 5 can be stopped. Then, the lower electromagnet 38 is activated to attract and limit the rotation position of the disc 8. The drive motor 37 is reversed to drive the slider 9 to reset. The above operation is repeated. First, the locking block 27 is driven to move upward. Then, the locking block 27 is retracted into the insert 13. Then, the insert 13 is driven to move downward to a position flush with the top of the gear. The drive motor 37 can be stopped. The lower electric telescopic cylinder 40 is activated to drive the push ring 12 to move upward, thereby pushing the gear ring upward. When the gear is raised to a position flush with the top of the fixed platform 10, the upper electric telescopic cylinder 42 is activated to drive the unloading plate 43 to move forward, thereby pushing the gear forward and into the discharge frame 39, where it slides into the material box for unloading, thus realizing the automatic unloading of the device. Finally, the device is reset, and the above operation is repeated for feeding and testing.

[0025] In summary, the above structural design enables the automatic ejection of the gear after gear inspection, and then pushes the gear into the discharge frame 39 for discharge, thereby realizing automatic material unloading of the device without the need for inspection personnel to remove the gear, further improving the convenience of the device.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of the present invention.

[0027] Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A quality inspection device for engineering gears, comprising an inspection table (1), characterized in that: The top of the testing platform (1) is fixedly connected to a fixed frame (2), and a lifter (3) is provided behind the fixed frame (2). A testing plate (4) is slidably connected to the inner side of the fixed frame (2). A testing mechanism (5) for measuring gear meshing degree is provided between the testing plate (4) and the lifter (3). A side frame (6) is fixedly connected to the inner side of the fixed frame (2). A chassis (7) is fixedly connected to the bottom of the side frame (6). A disc (8) is rotatably connected to the top of the chassis (7). A slider (9) is slidably connected to the top of the disc (8). The side frame ( 6) A fixed platform (10) is fixedly connected to the top. A feeding groove (11) is opened at the top of the fixed platform (10). A through groove is opened at the top of the feeding groove (11). A push ring (12) is provided inside the through groove. A tube (13) for inserting into the inside of the gear is slidably connected to the inside of the push ring (12). A pair of fixed plates (14) are fixedly connected to the top of the disc (8). The tube (13) is slidably connected between the fixed plates (14) in the longitudinal direction. A locking mechanism is provided on the disc (8) for moving the tube (13) up and locking the gear position. A storage frame (15) is fixedly connected to the side wall of the fixed frame (2). A circular groove (16) adapted to the gear is opened at the top of the storage frame (15). An outlet (17) is opened on the side wall of the circular groove (16) near the feeding trough (11). An upper electromagnet (18) is installed through the inner wall of the circular groove (16) away from the outlet (17). A tooth groove that meshes with the gear is opened on the side wall of the upper electromagnet (18). A side electric telescopic cylinder (19) is fixedly connected to the side wall of the storage frame (15). The output end of the side electric telescopic cylinder (19) passes through the inner side of the storage frame (15) and is fixedly connected to the top of the side wall of the upper electromagnet (18). Several tooth blocks (20) are fixedly connected to the inner side of the storage frame (15) relative to the position above the upper electromagnet (18).

2. The quality inspection device for engineering gears according to claim 1, characterized in that: The locking mechanism includes a cross (21), which is slidably connected to the bottom end of the insert (13). Round rods (22) are fixedly connected to both sides of the bottom end of the outer wall of the cross (21). A pair of lower rods (23) are fixedly connected to the bottom end of the insert (13). A transverse groove is formed through the top of the outer wall of the insert (13). Slide plates (24) are slidably connected longitudinally to both sides of the inner wall of the transverse groove. Straight grooves (25) are formed through the side walls of the slide plates (24). L-shaped grooves (26) are formed on both sides of the inner wall of the transverse groove. A transverse groove is formed between the inner sides of the two slide plates (24). A pair of locking blocks (27) are slidably connected. Each locking block (27) has a slanted groove (33) in the middle of its side. Guide rods (28) are fixedly connected to both sides of the outer wall of the locking block (27). The guide rods (28) pass through the straight groove (25) and are inserted into the inside of the L-shaped groove (26). A drive block (29) is fixedly connected to the top of the cross (21). The bottom of the drive block (29) is inclined on both sides. A pressing plate (30) is fixedly connected to the top of the slider (9) relative to the position below the lower rod (23). The side wall of the pressing plate (30) is inclined.

3. The quality inspection device for engineering gears according to claim 2, characterized in that: A pair of upper springs (31) are fixedly connected between the top end of the inner tube (13) and the top end of the slide plate (24). A pair of lower springs (32) are fixedly connected between the guide rods (28). The inclined surface of the inclined groove (33) is in contact with the inclined surface of the drive block (29). A pair of return springs (34) are fixedly connected between the bottom end of the cross (21) and the bottom end of the inner tube (13).

4. The quality inspection device for engineering gears according to claim 2, characterized in that: Each of the extrusion plates (30) is fixedly connected to a side plate (35) on the side closest to each other. The bottom end of the side wall of the side plate (35) is inclined, and the inclined surface of the side plate (35) and the inclined surface of the extrusion plate (30) are on the same side.

5. The quality inspection device for engineering gears according to claim 1, characterized in that: The top of the disc (8) has a through groove, and a lead screw (36) is rotatably connected to the inside of the groove. A drive motor (37) is fixedly connected to the side wall of the disc (8). The output end of the drive motor (37) passes through the inside of the groove and is fixedly connected to the side wall of the lead screw (36). The bottom end of the slider (9) is slidably connected to the inside of the groove, and the lead screw (36) is threadedly connected to the side wall of the slider (9).

6. The quality inspection device for engineering gears according to claim 1, characterized in that: The bottom of the chassis (7) is fixedly connected to the outer wall of the disc (8) with a lower electromagnet (38), and the disc (8) is made of iron.

7. The quality inspection device for engineering gears according to claim 1, characterized in that: The front side of the fixed platform (10) is inclined and fixedly connected to the discharge frame (39). The top of the disc (8) is fixedly connected to a pair of lower electric telescopic cylinders (40). The output end of the lower electric telescopic cylinder (40) is fixedly connected to the bottom end of the push ring (12). The rear side of the top of the fixed platform (10) is fixedly connected to the rear plate (41). The rear plate (41) is located behind the discharge frame (39). The rear side of the rear plate (41) is fixedly connected to the upper electric telescopic cylinder (42). The output end of the upper electric telescopic cylinder (42) passes through the front side of the rear plate (41) and is fixedly connected to the unloading plate (43).

Images