Double-station worm and gear fatigue test bench
By designing an adjustable second motor and a multi-function test box, the dependence of existing worm gear and worm fatigue testing devices on specific models or sizes is solved, and efficient fatigue testing of worm gear and worm structures of different sizes and models is achieved, improving the usability and testing efficiency of the test bench.
Patent Information
- Application Number
- CN202422023913.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-21
AI Technical Summary
Existing worm gear and worm fatigue testing devices are usually designed for specific models or sizes of worm gear and worm, and cannot effectively adapt to different sizes or models of worm gear and worm structures, resulting in lower availability.
A double-station worm gear and worm fatigue test bench is designed, adopting an adjustable second motor and a multi-function test box, which can adapt to worm gear and worm structures of different sizes and models, and realize double-station testing in the test box to improve testing efficiency and usability.
Fatigue testing of worm gear and worm structures of different sizes and models is achieved, which significantly improves the usability and testing efficiency of the test bench, while reducing external interference and ensuring the accuracy of fatigue testing.
Smart Images
Figure CN222913150U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of steering system testing technologies, and in particular, to a double-station worm and worm gear fatigue test bench. Background Art
[0002] In the field of passenger cars, electric power steering gears have gradually replaced traditional hydraulic steering gears due to advantages such as energy conservation and environmental protection. The worm and worm gear structure is one of the most commonly used structures in electric power steering gears, and more than 95% of electric power steering gears adopt this structure. During the R & D process of the worm, various performances of it need to be detected, and the fatigue life test is a very important and essential part among them.
[0003] In the prior art, common devices for worm and worm gear fatigue testing mainly include a test bench. A fixture for installing a worm and worm gear mechanism is fixedly installed on the test bench, and a first motor for driving the worm to rotate and a second motor for driving the worm gear to rotate are installed beside the fixture. During the process of testing the worm and worm gear, an operator pre-installs the worm and worm gear structure to be tested on the fixture, and then connects the first motor with the drive shaft of the worm through a connecting piece, and connects the second motor with the drive shaft of the worm gear. Then, the first motor and the second motor are started, and the fatigue performance of the worm and worm gear can be evaluated based on the data fed back by the torque sensors and angle sensors installed between the first motor, the second motor, the worm, and the worm gear.
[0004] However, the existing worm and worm gear fatigue testing devices are usually designed for specific models of worm and worm gear structures. One fatigue testing device can only test one model of worm and worm gear structure. If the model or size of the worm and worm gear structure changes, a new testing device needs to be replaced and designed, with low usability and room for improvement. Summary of the Utility Model
[0005] For [reasons not provided in the original], this application provides a double-station worm and worm gear fatigue test bench.
[0006] The double-station worm and worm gear fatigue test bench provided by this application adopts the following technical solutions:
[0007] A double-station worm and worm gear fatigue test bench includes a test bench. A test box is fixedly connected to the tabletop of the test bench, and two fixtures for installing worm and worm gear structures are fixedly installed in the test box;
[0008] Two first bases and two second bases are fixedly installed on the test bench. A first motor is fixedly installed on each of the first bases, and a second motor is adjustably installed on each of the second bases. Through holes for the drive shafts of the two first motors and the two second motors to extend into are formed in the side wall of the test box;
[0009] The box opening of the test box is detachably installed with a box cover, the box cover covers above the two worm and worm gear structures, and an observation port for observing the inside of the test box is opened on the box cover.
[0010] By adopting the above technical solution, during the actual test process, the operator can first remove the box cover on the test box, install the worm and worm gear structure to be tested on the fixture inside the test box, and connect the first motor and the second motor to the drive shafts of the worm and the worm respectively, then the fatigue test of the worm and worm gear can be carried out. During the installation process, since the second motor on the second base is adjustable, the operator can first connect the first motor to the worm and worm gear structure, and then the operator can adjust the position of the second motor according to the position of the worm connection shaft on the worm and worm gear, and then connect the worm and worm gear to the second motor, so as to realize the fatigue test of worm and worm gear structures of different sizes and models, and effectively improve the usability of the fatigue test bench. Since two fixtures are installed in the test box, during the actual test process, two worm and worm gear structures can be tested simultaneously, improving the test efficiency. Since the connection parts of the worm and worm gear with the first motor and the second motor are all covered inside the test box, the situation that external personnel or objects accidentally touch and affect the fatigue test can be reduced, providing guarantee for the fatigue test of the worm and worm gear.
[0011] Preferably, an installation bracket is slidably connected to the second base, and the installation bracket includes an installation bottom plate and an installation top plate;
[0012] A first lead screw is rotatably installed on the second base, a first slider is threadedly connected to the first lead screw, the first slider is fixedly connected to the bottom of the installation bottom plate, and an end of the first lead screw is fixedly connected with a connection part for connecting with an external screwing tool.
[0013] By adopting the above technical solution, during the process of the operator connecting the worm and worm gear structure and the second motor, the operator can apply force to the first lead screw with the help of an external screwing tool according to the distance between the second motor and the worm and worm gear, so that the second base moves towards or away from the worm and worm gear structure.
[0014] Preferably, a second lead screw is rotatably installed between the installation top plate and the installation bottom plate, and a second slider is threadedly connected to the second lead screw;
[0015] An installation seat for installing the second motor is slidably connected to the installation bracket, the second slider is fixedly connected to the installation seat, and the top of the second lead screw is fixedly connected with a hand wheel for driving the second lead screw to rotate.
[0016] By adopting the above technical solution, during the process of an operator connecting the worm and worm gear structure to the second motor, the operator can adjust the height of the second motor according to the height of the worm and worm gear by rotating the handwheel to drive the second slider and the mounting seat to move up and down.
[0017] Preferably, two guide rods are fixedly installed between the mounting bottom plate and the mounting top plate. The two guide rods are located on both sides of the second lead screw. Two guide blocks are fixedly installed on the mounting seat, and the two guide blocks are respectively slidably arranged on the two guide rods.
[0018] By adopting the above technical solution, the two guide rods can limit the sliding track of the mounting seat, so that the mounting seat moves up and down in a straight line, ensuring the stability of the up and down movement of the mounting seat and the motor.
[0019] Preferably, a plurality of connecting buckles are connected between the box body of the test box and the box cover.
[0020] By adopting the above technical solution, the technical effect of detachable connection between the box cover and the box body of the test box can be achieved through the connecting buckles, which is convenient for the operator to open the box cover to take and place the worm structure.
[0021] In summary, the double-station worm and worm gear fatigue test bench of the present application has at least the following beneficial technical effects:
[0022] 1. During the installation process, since the second motor on the second base is adjustable, the operator can first connect the first motor to the worm and worm gear structure. Subsequently, the operator can adjust the position of the second motor according to the position of the worm connecting shaft on the worm and worm gear, and then connect the worm and worm gear to the second motor, so as to realize the fatigue test of worm and worm gear structures of different sizes and models, effectively improving the usability of the fatigue test bench;
[0023] 2. Since two jigs are installed in the test box, during the actual test process, two worm and worm gear structures can be tested simultaneously, improving the test efficiency;
[0024] 3. Since the connection parts of the worm and worm gear with the first motor and the second motor are all covered in the test box, the situation that the fatigue test is affected by accidental contact of external personnel or objects can be reduced, providing guarantee for the fatigue test of the worm and worm gear. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 is a schematic diagram for showing the overall structure of the fatigue test bench in an embodiment of the present application.
[0026] Figure 2 is a schematic diagram for showing the internal structure of the test box in an embodiment of the present application.
[0027] Description of reference numerals: 1. Test bench; 11. First base; 12. Second base; 121. Mounting bracket; 122. Mounting top plate; 123. Mounting bottom plate; 124. First lead screw; 125. Connecting part; 126. Second lead screw; 127. Second slider; 128. Mounting seat; 129. Handwheel; 2. Test box; 21. Box cover; 22. Connecting buckle; 3. Fixture; 4. First motor; 5. Second motor. Detailed implementation manners
[0028] The following further describes the present application in detail with reference to Figure 1-2 the accompanying drawings.
[0029] Embodiment
[0030] An embodiment of the present application discloses a double-station worm and worm gear fatigue test bench 1. Refer to Figure 1 and Figure 2 , which mainly includes a test bench 1. A test box 2 is fixedly connected to the tabletop of the test bench 1, and two fixtures 3 for installing worm and worm gear structures are fixedly installed in the test box 2.
[0031] Two first bases 11 and two second bases 12 are fixedly installed on the test bench 1. First motors 4 are fixedly installed on the first bases 11, and second motors 5 are adjustably installed on the second bases 12. Through holes for the drive shafts of the two first motors 4 and the two second motors 5 to extend into are formed on the side wall of the test box 2; A box cover 21 is detachably installed at the box opening of the test box 2. The box cover 21 covers the upper part of the two worm and worm gear structures, and an observation port for observing the inside of the test box 2 is formed on the box cover 21.
[0032] During the actual test process, the operator can first remove the box cover 21 on the test box 2, install the worm and worm gear structure to be tested on the fixture 3 in the test box 2, and connect the first motor 4 and the second motor 5 to the drive shafts of the worm and the worm gear respectively, so as to perform a fatigue test on the worm and worm gear.
[0033] During the installation process, since the second motor 5 on the second base 12 is adjustable, the operator can first connect the first motor 4 to the worm and worm gear structure, and then the operator can adjust the position of the second motor 5 according to the position of the worm connection shaft on the worm and worm gear, and then connect the worm and worm gear to the second motor 5, so as to realize the fatigue test on worm and worm gear structures of different sizes and models, and effectively improve the usability of the fatigue test bench 1.
[0034] Since two clamps 3 are installed in the test chamber 2, two worm and worm gear structures can be tested simultaneously during the actual test process, improving the test efficiency. Since the connections between the worm and worm gear and the first motor 4 and the second motor 5 are covered inside the test chamber 2, the situation where external personnel or objects accidentally touch and affect the fatigue test can be reduced, providing guarantee for the fatigue test of the worm and worm gear.
[0035] Referring to Figure 1 With Figure 2 , a mounting bracket 121 is slidably connected to the second base 12. The mounting bracket 121 includes a mounting bottom plate 123 and a mounting top plate 122. A first lead screw 124 is rotatably installed on the second base 12. A first slider is threadedly connected to the first lead screw 124. The first slider is fixedly connected to the bottom of the mounting bottom plate 123. An end of the first lead screw 124 is fixedly connected with a connecting portion 125 for connecting with an external screwing tool.
[0036] During the process of the operator connecting the worm and worm gear structure to the second motor 5, the operator can apply force to the first lead screw 124 with the help of an external screwing tool according to the distance between the second motor 5 and the worm and worm gear, so that the second base 12 moves towards or away from the worm and worm gear structure.
[0037] Referring to Figure 1 , a second lead screw 126 is rotatably installed between the mounting top plate 122 and the mounting bottom plate 123. A second slider 127 is threadedly connected to the second lead screw 126. A mounting seat 128 for mounting the second motor 5 is slidably connected to the mounting bracket 121. The second slider 127 is fixedly connected to the mounting seat 128. The top of the second lead screw 126 is fixedly connected with a hand wheel 129 for driving the second lead screw 126 to rotate.
[0038] During the process of the operator connecting the worm and worm gear structure to the second motor 5, the operator can adjust the height of the second motor 5 according to the height of the worm and worm gear by rotating the hand wheel 129 to drive the second slider 127 and the mounting seat 128 to move up and down.
[0039] Referring to Figure 1 , two guide rods are fixedly installed between the mounting bottom plate 123 and the mounting top plate 122. The two guide rods are located on both sides of the second lead screw 126. Two guide blocks are fixedly installed on the mounting seat 128. The two guide blocks are respectively slidably arranged on the two guide rods.
[0040] The two guide rods can limit the sliding track of the mounting seat 128, so that the mounting seat 128 moves up and down in a straight line, ensuring the stability of the mounting seat 128 and the motor moving up and down.
[0041] Referring to Figure 1, Several connecting buckles 22 are connected between the box body of the test box 2 and the box cover 21. Through the connecting buckles 22, the technical effect of detachable connection between the box cover 21 and the box body of the test box 2 can be achieved, which is convenient for the operator to open the box cover 21 to take and place the worm gear structure.
[0042] The implementation principle of a double-station worm gear and worm fatigue test bench 1 in an embodiment of the present application is as follows: During the actual test process, the operator can first remove the box cover 21 on the test box 2, install the worm gear and worm structure to be tested on the fixture 3 in the test box 2, and connect the first motor 4 and the second motor 5 to the drive shafts of the worm gear and the worm respectively, so as to perform the fatigue test on the worm gear and worm. During the installation process, since the second motor 5 on the second base 12 is adjustable, the operator can first connect the first motor 4 to the worm gear and worm structure, and then the operator can adjust the position of the second motor 5 according to the position of the worm connection shaft on the worm gear and worm, and then connect the worm gear and worm to the second motor 5, so as to realize the fatigue test on worm gear and worm structures of different sizes and models, effectively improving the usability of the fatigue test bench 1. Since two fixtures 3 are installed in the test box 2, during the actual test process, two worm gear and worm structures can be tested simultaneously, improving the test efficiency. Since the connection parts of the worm gear and worm with the first motor 4 and the second motor 5 are all covered in the test box 2, the situation that the fatigue test is affected by accidental contact of external personnel or objects can be reduced, providing guarantee for the fatigue test of the worm gear and worm.
[0043] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited hereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.
Claims
1. A double-station worm gear fatigue test bench (1), characterized in that: It comprises a test bench (1), a test box (2) is fixedly connected to the table top of the test bench (1), and two fixtures (3) for installing a worm gear structure are fixedly installed in the test box (2); Two first bases (11) and two second bases (12) are fixedly mounted on the test bench (1); a first motor (4) is fixedly mounted on each of the first bases (11); a second motor (5) is adjustably mounted on each of the second bases (12); and a through hole is provided on the side wall of the test box (2) for the drive shafts of the two first motors (4) and the two second motors (5) to extend therethrough; The box opening of the test box (2) is detachably mounted with a box cover (21), the box cover (21) covers the tops of the two worm gear structures, and the box cover (21) is provided with an observation port for observing the interior of the test box (2).
2. A double-station worm gear fatigue test bench (1) according to claim 1, characterized in that: A mounting bracket (121) is slidably connected to the second base (12), and the mounting bracket (121) comprises a mounting bottom plate (123) and a mounting top plate (122); A first screw rod (124) is rotatably mounted on the second base (12), a first slider is threadedly connected to the first screw rod (124), the first slider is fixedly connected to the bottom of the mounting base plate (123), and a connecting portion (125) for connecting to an external screwing tool is fixedly connected to the end of the first screw rod (124).
3. A double-station worm gear fatigue test bench (1) according to claim 2, characterized in that: A second screw rod (126) is rotatably mounted between the mounting top plate (122) and the mounting bottom plate (123), and a second slider (127) is threadedly connected to the second screw rod (126); A mounting seat (128) for mounting the second motor (5) is slidably connected to the mounting bracket (121), the second sliding block (127) is fixedly connected to the mounting seat (128), and a hand wheel (129) for driving the second screw rod (126) to rotate is fixedly connected to the top of the second screw rod (126).
4. A double-station worm gear fatigue test bench (1) according to claim 3, characterized in that: Two guide rods are fixedly mounted between the mounting bottom plate (123) and the mounting top plate (122), the two guide rods being located on both sides of the second screw rod (126), and two guide blocks are fixedly mounted on the mounting seat (128), the two guide blocks being slidably mounted on the two guide rods respectively.
5. A double-station worm gear fatigue test bench (1) according to claim 4, characterized in that: A plurality of connecting buckles (22) are connected between the box body of the test box (2) and the box cover (21).