Rigidity detection device and detection method for drive axle housing

Abstract

The application discloses a rigidity detection device and method for a drive axle housing, which comprises a detection seat, a through groove is formed in the top surface of the detection seat, a C-shaped mounting groove is formed in one side of the top surface of the detection seat and located above the through groove, and a detection piece is arranged on the detection seat and located above the through groove. The rigidity detection device is automatically triggered to lift a protective cover after the drive axle housing is fixed, a ring-shaped detection protective space is formed, and the generated chippings and splashes in the detection process can be effectively blocked, so that the personal safety of the operator is protected, the equipment is prevented from being damaged due to foreign matter invasion, and the stability of the detection environment is maintained.

Description

Technical Field

[0001] This invention relates to the field of testing technology, and in particular to a device and method for testing the stiffness of a drive axle housing. Background Technology

[0002] In the automotive and construction machinery industries, the drive axle housing is a critical component of the transmission system. Its stiffness directly affects the vehicle's load-bearing capacity, driving stability, and safety. Insufficient stiffness in the drive axle housing can easily lead to deformation during vehicle operation, resulting not only in reduced transmission efficiency and accelerated wear of components but also potentially causing serious safety accidents. Therefore, accurate stiffness testing of the drive axle housing is a crucial step in ensuring equipment quality and reliability.

[0003] In existing stiffness testing processes, there is a lack of effective protective measures. The debris and flying materials generated during testing not only threaten the personal safety of operators, but also require operators to frequently put their hands into the testing area in order to complete the loading, unloading and testing of the drive axle housing, which may cause serious injury to the operators. Therefore, there is an urgent need for a stiffness testing device and method for drive axle housing to solve this problem. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides the following technical solution: The stiffness testing device for the drive axle housing includes: The testing base has a through groove on its platform and a C-shaped mounting groove on one side of the platform. The detection element is disposed on the detection seat and located above the through groove; A movable component is disposed on both sides of the detection seat. The movable end of the movable component is rotatably connected to a clamping sleeve. A movable part is disposed inside the clamping sleeve. Two sets of sliding abutment rods are disposed on the movable part. A connecting component is disposed on both sides of the top of the clamping sleeve. The top of the abutting rod passes through the connecting component and extends into the connecting component. An air inlet pipe is provided on one side of the connecting component. The protective cover is movably inserted into the mounting slot; Two sets of pushing components are respectively set on both sides of the bottom of the detection seat. The pushing component includes a cylinder fixedly set at the bottom of the detection seat, a connecting rod movably inserted into the bottom of the cylinder, a piston fixedly connected to the top of the connecting rod, and a spring set between the piston and the cylinder. The bottom of the connecting rod is fixedly connected to the protective cover. A connecting pipe is provided between the cylinder sidewall and the connecting component below the piston. The drive axle housing is placed above the through slot and its two ends are placed on the detection seat. The moving component is driven to move the clamping sleeve downward to limit and fix the two ends of the drive axle housing. The abutment rod is pressed and moves upward, controlling the air inlet pipe to open. Compressed gas enters the cylinder through the connecting pipe and pushes the piston upward, causing the protective cover to move upward along the mounting slot to form an annular detection protection space.

[0005] As a technical improvement to the above solution, the moving component includes a lead screw rotatably inserted into the detection seat, a threaded sleeve threaded onto the surface of the lead screw, and a rotating rod rotatably connected to the side wall of the threaded sleeve. The end of the rotating rod away from the threaded sleeve is rotatably connected to the top of the clamping sleeve. Fixed rods are fixedly connected inside the detection seat and on both sides of the clamping sleeve, and the fixed rods are slidably connected to the side wall of the clamping sleeve.

[0006] As a technical improvement to the above solution, the moving part includes a limiting plate that is slidably connected to the inner wall of the clamping sleeve and a spring disposed between the limiting plate and the clamping sleeve. The abutting rod is disposed on both sides of the top of the limiting plate, and the end of the abutting rod extending into the interior of the communicating component has an enlarged portion.

[0007] As a technical improvement to the above solution, the connecting component includes a fixed tube disposed on the top of the clamping sleeve, an expansion tube being connected to the top of the fixed tube, the expansion portion being adapted to the fixed tube, and the top of the expansion tube being connected to the cylinder through a connecting tube.

[0008] As a technical improvement to the above solution, a fixed frame is connected to the top of the air intake pipe, a second spring is fixedly installed on the top of the fixed frame, a sealing plate adapted to the air intake pipe is fixedly connected to the bottom of the second spring, and a connecting pipe is connected between the top of the fixed frame and the connecting pipe.

[0009] As a technical improvement to the above solution, the detection component includes a hydraulic rod disposed on the top of the detection seat and a pressure push plate fixedly disposed on the bottom of the hydraulic rod.

[0010] As a technical improvement to the above solution, a driving component is also included. A transmission belt is connected between the two sets of lead screws, and a motor is installed on the side wall of the detection seat. The motor is connected to one of the sets of lead screws through a transmission belt.

[0011] The method for testing the stiffness of the drive axle housing, using the drive axle housing stiffness testing device described above, includes the following steps: S1: Place the drive axle housing above the through slot of the test seat, so that both ends of the drive axle housing rest on the test seat; S2: Drive the moving component, which drives the clamping sleeve to move downward through its moving end, thereby limiting and fixing both ends of the drive axle housing; S3: When the drive axle housing is in the limit position, the contact rod moves upward under the reaction force to open the air intake pipe. The compressed gas enters the cylinder through the connecting component and the connecting pipe in sequence, pushing the piston upward and causing the protective cover to rise along the mounting groove to form a protective space. S4: The test is over. The moving component moves the clamping sleeve upward to unlock the drive axle housing, vents the cylinder gas, and the spring pushes the piston downward, causing the protective cover to drop and expose the test area.

[0012] The beneficial effects of this invention are: The moving component drives the clamping sleeve to limit and fix both ends of the drive axle housing, ensuring that the drive axle housing remains stable during the testing process, effectively avoiding the impact of positional displacement on the test results, and significantly improving the accuracy and reliability of the test results. By using the linkage of components such as the contact rod, connecting component, air inlet pipe, and cylinder, the protective cover is automatically triggered to rise after the drive axle housing is fixed, forming a ring-shaped detection protection space. This effectively blocks debris and splashes generated during the detection process, protecting the personal safety of operators, preventing equipment damage due to foreign object intrusion, and maintaining the stability of the detection environment.

[0013] The automated protective structure forms a closed protective space during the testing process, eliminating the need for operators to reach into the testing area and thus eliminating the risk of injury to personnel caused by component movement. After the test is completed, the protective cover can automatically descend and reset, quickly exposing the test area, which facilitates the loading and unloading of the drive axle housing by the operator, greatly improves the efficiency of the test work, simplifies the operation process, and meets the needs of large-scale production test. Attached Figure Description

[0014] Figure 1 This is a front view of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 This is a schematic diagram of the structure of the clamping sleeve of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point B; Figure 5 This is a schematic diagram of the platform structure of the detection seat of the present invention.

[0015] Reference numerals: 10. Detection seat; 11. Through groove; 12. Mounting groove; 13. Fixing rod; 20. Lead screw; 21. Threaded sleeve; 22. Rotating rod; 23. Clamping sleeve; 24. Limiting plate; 25. Spring 1; 26. Abutting rod; 27. Expansion part; 28. Fixing tube; 281. Expansion tube; 29. ​​Air inlet tube; 291. Fixing frame; 210. Spring 2; 211. Sealing plate; 212. Connecting tube; 30. Hydraulic rod; 31. Pressure push plate; 40. Protective cover; 41. Cylinder; 42. Spring 3; 43. Connecting rod; 44. Piston. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0017] The stiffness testing device for the drive axle housing includes: a testing base 10, a through groove 11 formed on the platform of the testing base 10, and a C-shaped mounting groove 12 formed on the platform of the testing base 10 and on one side of the through groove 11. The detection element is disposed on the detection seat and located above the through groove 11; A movable component is disposed on both sides of the detection seat 10. The movable end of the movable component is rotatably connected to a clamping sleeve 23. A movable part is disposed inside the clamping sleeve 23. Two sets of sliding abutment rods 26 are disposed on the movable part. A connecting component is disposed on both sides of the top of the clamping sleeve 23. The top of the abutting rod 26 passes through the connecting component and extends into the connecting component. An air inlet pipe 29 is provided on one side of the connecting component. The protective cover 40 is movably inserted into the mounting slot 12; Two sets of pushing components are respectively disposed on the bottom sides of the detection seat 10. The pushing components include a cylinder 41 fixedly disposed at the bottom of the detection seat 10, a connecting rod 43 movably inserted into the bottom of the cylinder 41, a piston 44 fixedly connected to the top of the connecting rod 43, and a spring 42 disposed between the piston 44 and the cylinder 41. The bottom of the connecting rod 43 is fixedly connected to the protective cover 40. A connecting pipe is disposed between the side wall of the cylinder 41 and the connecting component below the piston 44. The drive axle housing is placed above the through groove 11 and its two ends are placed on the detection seat 10. The moving component is driven to move the clamping sleeve 23 downward to limit and fix the two ends of the drive axle housing. The abutment rod 26 is pressed and moves upward, controlling the air inlet pipe 29 to open. Compressed gas enters the cylinder 41 through the connecting pipe and pushes the piston 44 upward, so that the protective cover 40 moves upward along the mounting groove 12 to form an annular detection and protection space.

[0018] Specifically, the drive axle housing is placed above the through slot 11 of the detection seat 10, and both ends of the drive axle housing rest on the detection seat 10. The moving component is driven, causing the moving end of the moving component to move the clamping sleeve 23 downward, limiting and fixing both ends of the drive axle housing, thereby keeping the drive axle housing stable during the detection process and avoiding positional displacement that could affect the detection results. During the process of the drive axle housing being limited and fixed, due to the presence of the drive axle housing, when the clamping sleeve 23 moves downward and contacts the drive axle housing, the drive axle housing will generate an upward reaction force on the abutment rod 26, causing it to slide upward. When the abutment rod 26 moves upward, it will cause the air inlet pipe 29 to open, allowing compressed gas to be input into the connecting component. The compressed gas entering the connecting component enters the cylinder 41 through the connecting pipe. The gas pushes the piston 44 upward to compress the spring 3 42. The piston 44 drives the connecting rod 43 upward. When the connecting rod 43 moves upward, it will drive the protective cover 40 to move upward along the mounting groove 12. As the protective cover 40 rises, an annular protective space is formed above the test seat 10, which protects the drive axle housing during the test process and prevents debris, splashes, etc. from damaging the operators and equipment. It also helps to maintain the stability of the test environment. After the test is completed, the moving component is activated, causing the clamping sleeve to move downward, releasing the limit fixation of the drive axle housing. At the same time, the gas in the cylinder 41 is discharged. Under the restoring force of the spring 42, the piston 44 is pushed downward. The piston 44 drives the protective cover 40 downward through the connecting rod. After the protective cover 40 moves downward, it no longer blocks the test area, making it easy for the operator to remove the tested drive axle housing from the test seat 10. It also makes it easy to place the next drive axle housing to be tested, improving the efficiency and convenience of the test work.

[0019] In one embodiment, the moving component includes a lead screw 20 rotatably inserted into the detection seat 10, a threaded sleeve 21 threaded onto the surface of the lead screw 20, and a rotating rod 22 rotatably connected to the side wall of the threaded sleeve 21. The end of the rotating rod 22 away from the threaded sleeve 21 is rotatably connected to the top of the clamping sleeve 23. Fixing rods 13 are fixedly connected inside the detection seat 10 and on both sides of the clamping sleeve 23. The fixing rods 13 are slidably connected to the side wall of the clamping sleeve 23. When the lead screw 20 rotates, the threaded sleeve 21 moves along the axial direction of the lead screw 20. The threaded sleeve 21 drives the clamping sleeve 23 to move through the rotating rod 22. The function of the fixed rod 13 is to guide the movement of the clamping sleeve 23 and prevent the clamping sleeve 23 from deviating or shaking during the movement. When the clamping sleeve 23 moves under the drive of the rotating rod 22, its side wall slides along the fixed rod 13, thereby ensuring that the clamping sleeve 23 moves in the predetermined direction, so that the clamping sleeve 23 can accurately limit and fix both ends of the drive axle housing. At the same time, one end of the threaded sleeve 21 is slidably connected to the inner wall of the detection seat 10 through the rotating rod 22.

[0020] In one embodiment, the movable component includes a limiting plate 24 slidably connected to the inner wall of the clamping sleeve 23 and a spring 25 disposed between the limiting plate 24 and the clamping sleeve 23. The abutting rod 26 is disposed on both sides of the top of the limiting plate 24, and the abutting rod 26 has an enlarged portion 27 at one end extending into the interior of the communicating component. When the drive axle housing is placed on the detection seat 10 and the clamping sleeve 23 moves downward to limit and fix the drive axle housing, the drive axle housing will apply an upward force to the abutment rod 26. When the abutment rod 26 is subjected to an upward force, the limiting plate 24 compresses the spring 25 and moves upward, and the abutment rod 26 also moves upward. The expansion part 27 moves and opens the outlet end of the air inlet pipe 29, so that the gas enters the connecting component and enters the cylinder 41 through the connecting pipe. When the force of the drive axle housing on the abutment rod 26 disappears, the spring 25 will push the limit plate 24 downward, so that the abutment rod 26 returns to its initial position and seals the air outlet of the intake pipe 29.

[0021] In one embodiment, the connecting device assembly includes a fixed tube 28 disposed on the top of the clamping sleeve 23, an expansion tube 281 connected to the top of the fixed tube 28, the expansion portion 27 being adapted to the fixed tube 28, and the top of the expansion tube 281 being connected to the cylinder 41 via a connecting tube. Initially, the expanded portion is located inside the fixed tube 28, sealing one end of the intake tube 29. When the abutment rod 26 moves upward, its expanded portion 27 enters the expansion tube 281. Therefore, the gas inside the intake tube 29 enters the fixed tube and then flows into the expansion tube 281, and then enters the cylinder 41 through the connecting tube. The gas entering the cylinder 41 pushes the piston 44 upward. The upward movement of the piston 44 drives the connecting rod 43 upward, thereby causing the protective cover 40 to move upward along the mounting groove 12, forming an annular shape. The protective space is inspected. At the same time, spring 3 42 is set between piston 44 and cylinder 41. When gas pushes piston 44 to move upward, spring 3 42 is compressed, which plays a role in buffering and assisting in reset. When the inspection is completed, the gas is discharged and spring 3 42 pushes piston 44 to move downward, so that the protective cover 40 can return to its initial position. An exhaust pipe is connected to the connecting pipe, and a solenoid valve is installed in the exhaust pipe. The connecting component on the same set of clamping sleeves 23 is connected to the cylinder 41 below it.

[0022] In one embodiment, a fixing frame 291 is connected to the top of the air intake pipe 29, a second spring 210 is fixedly installed on the top of the fixing frame 291, a sealing plate 211 adapted to the air intake pipe 29 is fixedly connected to the bottom of the second spring 210, and a connecting pipe 212 is connected between the top of the fixing frame 291 and the connecting pipe. Because of the function of the connecting pipe 212, the air pressure in the fixed frame 291 is consistent with the air pressure in the connecting pipe. When the air pressure in the connecting pipe is greater than the elastic force of the second spring 210, it will push the sealing plate 211 to move downward to seal the air inlet pipe 29, preventing compressed gas from continuing to enter the connecting pipe and maintaining stable air pressure in the system. When the device needs to form a protective space, gas enters the connecting pipe, and the change in air pressure triggers the action of the sealing plate 211 to avoid excessive gas inflow leading to excessively high air pressure, which would affect the normal operation of the device. At the same time, when the device needs to return to its initial state after testing, the change in air pressure and the elastic force of the second spring 210 will cause the sealing plate 211 to move downward into the fixed frame, opening the air inlet pipe 29 and preparing for the next test.

[0023] In one embodiment, the detection element includes a hydraulic rod 30 disposed on the top of the detection seat 10 and a pressure push plate 31 fixedly disposed on the bottom of the hydraulic rod 30; When the hydraulic rod 30 moves downward, the pressure push plate 31 moves downward accordingly, applying pressure to the drive axle housing placed on the test seat 10 for stiffness testing. Through the extension and retraction of the hydraulic rod 30, the pressure push plate 31 can adjust the pressure on the drive axle housing according to the testing requirements. During the stiffness testing of the drive axle housing, the pressure applied by the pressure push plate 31 will cause a certain deformation of the drive axle housing. By detecting and analyzing the deformation of the drive axle housing, combined with the applied pressure value, the stiffness of the drive axle housing can be calculated.

[0024] In one embodiment, a driving component is also included, and a transmission belt is connected between the two sets of lead screws 20. A motor is installed on the side wall of the detection seat 10, and the motor is connected to one of the sets of lead screws 20 through a transmission belt. When the motor is working, its output shaft rotates and is connected to one of the lead screws 20 via a transmission belt, transmitting the motor's power to the lead screws 20 and causing them to rotate. When one set of lead screws 20 rotates under the motor's drive, the power is transmitted to the other set of lead screws 20 via a transmission belt, causing the two sets of lead screws 20 to rotate synchronously. The rotation of the lead screws 20 causes the threaded sleeve 21 to move on the lead screws 20. The movement of the threaded sleeve 21 drives the rotating rod 22 to rotate, which in turn causes the clamping sleeve 23 to move, thus achieving the limiting and fixing operation at both ends of the drive axle housing. This transmission method ensures the synchronous operation of the two sets of lead screws 20, enabling the clamping sleeve 23 to operate on both ends of the drive axle housing simultaneously and stably, providing a reliable basis for subsequent stiffness testing. Example

[0025] The method for testing the stiffness of the drive axle housing, using the drive axle housing stiffness testing device described in Example 1, includes the following steps: S1: Place the drive axle housing above the through slot 11 of the detection seat 10, so that both ends of the drive axle housing rest on the detection seat 10; S2: Drive the moving component, which drives the clamping sleeve 23 to move downward through its moving end, thereby limiting and fixing both ends of the drive axle housing; S3: When the drive axle housing is in the limit position, the contact rod 26 moves upward under the reaction force to open the air intake pipe 29. The compressed gas enters the cylinder 41 through the connecting component and the connecting pipe in sequence, pushing the piston 44 to move upward, which drives the protective cover 40 to rise along the mounting groove 12 to form a protective space. S4: The test is over. The moving component moves the clamping sleeve 23 upward to unlock the drive axle housing, venting the gas from the cylinder 41. The spring 3 42 pushes the piston 44 downward, causing the protective cover 40 to drop and expose the test area.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A stiffness testing device for a drive axle housing, characterized in that, include: The detection seat (10) has a through groove (11) on its table surface and a C-shaped mounting groove (12) on one side of the table surface of the detection seat (10) located in the through groove (11). The detection element is disposed on the detection seat and located above the through groove (11); The movable component is disposed on both sides of the detection seat (10). The movable end of the movable component is rotatably connected to the clamping sleeve (23). The clamping sleeve (23) is provided with a movable part, and the movable part is provided with two sets of sliding abutment rods (26). A connecting component is provided on both sides of the top of the clamping sleeve (23). The top of the abutting rod (26) passes through the connecting component and extends into the connecting component. An air inlet pipe (29) is provided on one side of the connecting component. The protective cover (40) is movably inserted into the mounting slot (12); Two sets of pushing components are respectively set on the bottom sides of the detection seat (10). The pushing components include a cylinder (41) fixedly set on the bottom of the detection seat (10), a connecting rod (43) movably inserted into the bottom of the cylinder (41), a piston (44) fixedly connected to the top of the connecting rod (43), and a spring (42) set between the piston (44) and the cylinder (41). The bottom of the connecting rod (43) is fixedly connected to the protective cover (40). A connecting pipe is provided between the side wall of the cylinder (41) and the piston (44) and the connecting component. The drive axle housing is placed above the through slot (11) and its two ends are placed on the detection seat (10). The moving component is driven to move the clamping sleeve (23) downward to limit and fix the two ends of the drive axle housing. The abutment rod (26) is pressed and moves upward, and the air inlet pipe (29) is opened. The compressed gas enters the cylinder (41) through the connecting pipe and pushes the piston (44) upward, so that the protective cover (40) moves upward along the mounting slot (12) to form an annular detection protection space.

2. The stiffness detection device for the drive axle housing according to claim 1, characterized in that: The moving component includes a lead screw (20) rotatably inserted into the detection seat (10), a threaded sleeve (21) threaded onto the surface of the lead screw (20), and a rotating rod (22) rotatably connected to the side wall of the threaded sleeve (21). The end of the rotating rod (22) away from the threaded sleeve (21) is rotatably connected to the top of the clamping sleeve (23). Fixed rods (13) are fixedly connected inside the detection seat (10) and on both sides of the clamping sleeve (23). The fixed rods (13) are slidably connected to the side wall of the clamping sleeve (23).

3. The stiffness detection device for the drive axle housing according to claim 2, characterized in that: The movable component includes a limiting plate (24) slidably connected to the inner wall of the clamping sleeve (23) and a spring (25) disposed between the limiting plate (24) and the clamping sleeve (23). The abutting rod (26) is disposed on both sides of the top of the limiting plate (24), and the abutting rod (26) has an enlarged portion (27) at one end extending into the interior of the communicating component.

4. The stiffness detection device for the drive axle housing according to claim 3, characterized in that: The connecting component includes a fixed tube (28) disposed on the top of the clamping sleeve (23), and an expansion tube (281) is connected to the top of the fixed tube (28). The expansion part (27) is adapted to the fixed tube (28), and the top of the expansion tube (281) is connected to the cylinder (41) through a connecting tube.

5. The stiffness detection device for the drive axle housing according to claim 1, characterized in that: The top of the air intake pipe (29) is connected to a fixed frame (291), and the top of the fixed frame (291) is fixedly provided with a spring two (210). The bottom of the spring two (210) is fixedly connected to a sealing plate (211) that is compatible with the air intake pipe (29). A connecting pipe (212) is provided between the top of the fixed frame (291) and the connecting pipe.

6. The stiffness detection device for the drive axle housing according to claim 1, characterized in that: The detection component includes a hydraulic rod (30) disposed on the top of the detection seat (10) and a pressure push plate (31) fixedly disposed on the bottom of the hydraulic rod (30).

7. The stiffness detection device for the drive axle housing according to claim 2, characterized in that: It also includes a drive component, with a drive belt connecting the two sets of lead screws (20), and a motor installed on the side wall of the detection seat (10). The motor is connected to one of the sets of lead screws (20) via a drive belt.

8. A method for testing the stiffness of a drive axle housing, using the stiffness testing device for a drive axle housing according to any one of claims 1-7, characterized in that: Includes the following steps: S1: Place the drive axle housing above the through slot (11) of the detection seat (10), so that both ends of the drive axle housing rest on the detection seat (10); S2: Drive the moving component, and drive the clamping sleeve (23) to move downward through its moving end, thereby limiting and fixing both ends of the drive axle housing; S3: When the drive axle housing is in the limit position, the contact rod (26) moves upward under the reaction force to open the air intake pipe (29). The compressed gas enters the cylinder (41) through the connecting component and the connecting pipe in sequence, pushing the piston (44) to move upward, and causing the protective cover (40) to rise along the mounting groove (12) to form a protective space; S4: The test is over. The moving component moves the clamping sleeve (23) up to unlock the drive axle housing, and the gas in the cylinder (41) is discharged. The spring three (42) pushes the piston (44) down, causing the protective cover (40) to drop and expose the test area.

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