Torsional vibration testing device for automobile engine crankshaft
By designing the sliding support support and servo motor -driven laser sensor position adjustment device, the problem of tedious adjustment positions in laser testing in the laser test has been solved, and more accurate and efficient twisting tests are achieved.
Patent Information
- Application Number
- CN202421242400.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-06-03
AI Technical Summary
When using laser to test the torsional vibration of the crankshaft of the car engine, the torsional vibration results tested at different positions of the crankshaft are prone to differences, and the position of the laser sensor needs to be manually adjusted, which is cumbersome and difficult to be accurate.
A car engine crankshaft twisting test device is designed. By setting the sliding support and servo motor, the accurate position adjustment of the laser sensor is used to use the screw and fixed slide rail to ensure the accuracy of the twisting test.
The precise adjustment of the laser sensor position is achieved, the operation process is simplified, and the accuracy and efficiency of the torsional vibration test are improved.
Smart Images
Figure CN222393785U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engine crankshafts, and more specifically to a torsional vibration testing device for an automobile engine crankshaft. Background Art
[0002] The engine crankshaft torsional vibration test is to analyze the rotation speed of the engine crankshaft, that is, to test the static or dynamic balance of the crankshaft structural components. Currently, there are three common sensors for testing the engine crankshaft speed: laser speed sensor, magnetoelectric speed sensor and encoder. Among them, the laser speed sensor is more widely used than the other two sensors. In current technical operations, when using laser to test the crankshaft torsional vibration, the torsional vibration results tested at different positions of the crankshaft will be different, and the position of the laser sensor needs to be manually adjusted, which is difficult to be accurate and the operation is cumbersome, time-consuming and laborious. Utility Model Content
[0003] In order to overcome the deficiencies of the prior art, the utility model provides a torsional vibration test device for a crankshaft of an automobile engine, which has the advantages of accurate adjustment of a sensor test position and simple operation.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a torsional vibration testing device for a crankshaft of an automobile engine, comprising a tooling base, a tooling bracket is fixedly installed on the left side above the tooling base, a rotating shaft is rotatably installed in the middle of the tooling bracket, a crankshaft is fixedly installed on the right end of the rotating shaft, a support plate is fixedly installed in the middle part above the tooling base, a tripod is fixedly installed on the right side above the tooling base, an organic base is fixedly installed above the tripod, a lead screw is installed in the middle part of the tripod, a fixed slide rail is fixedly installed on the front side above the tooling base, a sliding support is slidably installed above the fixed slide rail, and a rectangular hole is opened at the bottom of the sliding support.
[0005] As a preferred technical solution of the utility model, a rectangular hole 2 is opened on the top of the sliding support, a laser sensor is provided inside the rectangular hole 2, a lead screw 2 is rotatably installed on the top of the side of the sliding support, a cavity is opened on the front side of the rectangular hole 2, a spring is fixedly installed inside the cavity, and a slider is fixedly installed on the top of the spring.
[0006] As a preferred technical solution of the utility model, the middle portion of the lead screw 1 is threaded, and the lead screw 1 passes through the support frame, and the lead screw 1 is meshed with the contact portion of the sliding support.
[0007] As a preferred technical solution of the utility model, the bottom of the slider is installed on the top of the spring, and the slider is inserted into the cavity.
[0008] As a preferred technical solution of the utility model, a hole is opened at the bottom of the fixed slide rail, and the fixed slide rail passes through the rectangular hole one.
[0009] As a preferred technical solution of the utility model, a servo motor is provided above the machine base, and a reflector is fixedly installed on the rear side above the tooling base.
[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0011] 1. The utility model sets a sliding support, starts a servo motor, drives the crankshaft to rotate through the servo motor, places the laser sensor inside the rectangular hole 2 and tests the torsional vibration. Since the fixed slide rail passes through the bottom of the sliding support, the right end of the lead screw 1 is rotated, and the middle thread of the lead screw 1 is engaged with the sliding support. The sliding distance of the sliding support above the fixed slide rail is controlled by the rotation of the lead screw 1, so that the position of the laser sensor is accurately adjusted according to different environments to test the torsional vibration.
[0012] 2. The utility model sets a second rectangular hole. Since the laser sensor is placed inside the second rectangular hole, a second lead screw is rotatably installed on the side of the second rectangular hole. The second lead screw is controlled to move toward the laser sensor by rotating the second lead screw, thereby fixing the laser sensor in the left and right directions. By setting a cavity on the front side of the second rectangular hole and installing a spring inside the cavity, after the laser sensor is placed inside the second rectangular hole, the slider moves upward due to the elastic force of the spring, thereby reducing the influence of the position change caused by the wind force generated by the crankshaft when the crankshaft rotates on the laser sensor. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0014] Figure 2 This is a rear view of the overall structure of the utility model;
[0015] Figure 3 This is a structural schematic diagram of a lead screw of the utility model;
[0016] Figure 4 This is a cross-sectional view of the sliding support structure of the utility model;
[0017] Figure 5 This is a cross-sectional view of the second structure of the rectangular hole of the utility model.
[0018] In the figure: 1. tooling base; 2. tooling bracket; 3. rotating shaft; 4. crankshaft; 5. support plate; 6. tripod; 7. machine base; 8. lead screw 1; 9. fixed slide rail; 10. sliding support; 11. rectangular hole 1; 12. rectangular hole 2; 13. laser sensor; 14. lead screw 2; 15. cavity; 16. spring; 17. slider; 18. servo motor; 19. reflector. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] like Figures 1 to 5 As shown, the utility model provides a torsional vibration test device for a crankshaft of an automobile engine, comprising a tooling base 1, a tooling bracket 2 is fixedly installed on the left side above the tooling base 1, a rotating shaft 3 is rotatably installed in the middle of the tooling bracket 2, a crankshaft 4 is fixedly installed on the right end of the rotating shaft 3, a support plate 5 is fixedly installed in the middle part above the tooling base 1, a tripod 6 is fixedly installed on the right side above the tooling base 1, an organic base 7 is fixedly installed above the tripod 6, a lead screw 8 is installed in the middle part of the tripod 6, a fixed slide rail 9 is fixedly installed on the front side above the tooling base 1, a sliding support 10 is slidably installed above the fixed slide rail 9, and a rectangular hole 11 is opened at the bottom of the sliding support 10.
[0021] By setting the sliding support 10, turning on the servo motor 18, and driving the crankshaft 4 to rotate through the servo motor 18, the laser sensor 13 is placed inside the rectangular hole 12 and the torsional vibration is tested. Since the fixed slide rail 9 passes through the bottom of the sliding support 10, by rotating the right end of the lead screw 8, the middle thread of the lead screw 8 is engaged with the sliding support 10, and the sliding distance of the sliding support 10 above the fixed slide rail 9 is controlled by the rotation of the lead screw 8, thereby changing the position of the laser sensor 13 according to different environments to test the torsional vibration.
[0022] Among them, a rectangular hole 12 is opened on the top of the sliding support 10, and a laser sensor 13 is arranged inside the rectangular hole 12. A lead screw 14 is rotatably installed on the upper side of the sliding support 10. A cavity 15 is opened on the front side of the rectangular hole 12. A spring 16 is fixedly installed inside the cavity 15, and a slider 17 is fixedly installed on the top of the spring 16.
[0023] By setting the rectangular hole 12, since the laser sensor 13 is placed inside the rectangular hole 12, a lead screw 14 is rotatably installed on the side of the rectangular hole 12, and the lead screw 14 is controlled to move toward the laser sensor 13 by rotating the lead screw 14, so as to fix the laser sensor 13 in the left and right directions. By setting the cavity 15 on the front side of the rectangular hole 12, the spring 16 is installed inside the cavity 15. After the laser sensor 13 is placed inside the rectangular hole 12, the slider 17 moves upward due to the elastic force of the spring 16, so as to reduce the influence of the wind force generated on the laser sensor 13 when the crankshaft 4 rotates and causes the position change.
[0024] The middle part of the lead screw 8 is threaded, and the lead screw 8 passes through the support bracket 6, and the lead screw 8 is meshed with the contact part of the sliding support 10.
[0025] By setting the middle part of the lead screw 8 to be threaded and the lead screw 8 passing through the support frame 6, the lead screw 8 is meshed with the contact part of the sliding support 10, so that the sliding support 10 can be controlled to slide above the fixed slide rail 9 by rotating the right end of the lead screw 8.
[0026] The bottom of the slider 17 is installed on the top of the spring 16 , and the slider 17 is inserted into the cavity 15 .
[0027] By setting the bottom of the slider 17 to be installed on the top of the spring 16 and the slider 17 inserted into the cavity 15, when the laser sensor 13 is placed into the rectangular hole 12, the slider 17 moves upward due to the elastic force of the spring 16 and is fixed on the front side of the laser sensor 13.
[0028] A hole is formed at the bottom of the fixed slide rail 9 , and the fixed slide rail 9 passes through the rectangular hole 11 .
[0029] By providing a hole at the bottom of the fixed slide rail 9 , the fixed slide rail 9 passes through the rectangular hole 11 , so that the sliding support 10 can slide on the fixed slide rail 9 .
[0030] A servo motor 18 is disposed above the machine base 7 , and a reflector 19 is fixedly mounted on the rear side above the tooling base 1 .
[0031] By arranging a servo motor 18 above the machine base 7, the reflector 19 can be driven to drive the crankshaft 4 to rotate. The reflector 19 is fixedly installed on the rear side above the tooling base 1 to increase the test accuracy of the laser sensor 13.
[0032] The working principle and use process of this utility model:
[0033] The servo motor 18 is turned on, and the crankshaft 4 is driven to rotate by the servo motor 18. The laser sensor 13 is placed inside the rectangular hole 12 and the torsional vibration is tested. Since the fixed slide rail 9 passes through the bottom of the sliding support 10, the right end of the lead screw 8 is rotated, and the middle thread of the lead screw 8 is engaged with the sliding support 10. The sliding distance of the sliding support 10 above the fixed slide rail 9 is controlled by the rotation of the lead screw 8, so that the position of the laser sensor 13 is changed according to different environments to test the torsional vibration.
[0034] By setting the rectangular hole 12, since the laser sensor 13 is placed inside the rectangular hole 12, a lead screw 14 is rotatably installed on the side of the rectangular hole 12, and the lead screw 14 is controlled to move toward the laser sensor 13 by rotating the lead screw 14, so as to fix the laser sensor 13 in the left and right directions. By setting the cavity 15 on the front side of the rectangular hole 12, the spring 16 is installed inside the cavity 15. After the laser sensor 13 is placed inside the rectangular hole 12, the slider 17 moves upward due to the elastic force of the spring 16, so as to reduce the influence of the wind force generated on the laser sensor 13 when the crankshaft 4 rotates and causes the position change.
[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A torsional vibration test device for a crankshaft of an automobile engine, comprising a tooling base (1), characterized in that: A tooling bracket (2) is fixedly installed on the left side above the tooling base (1), a rotating shaft (3) is rotatably installed in the middle of the tooling bracket (2), a crankshaft (4) is fixedly installed on the right end of the rotating shaft (3), a support plate (5) is fixedly installed in the middle of the tooling base (1), a tripod (6) is fixedly installed on the right side above the tooling base (1), an organic base (7) is fixedly installed above the tripod (6), a lead screw (8) is installed in the middle of the tripod (6), a fixed slide rail (9) is fixedly installed on the front side above the tooling base (1), a sliding support (10) is slidably installed above the fixed slide rail (9), and a rectangular hole (11) is opened at the bottom of the sliding support (10).
2. The automobile engine crankshaft torsional vibration testing device according to claim 1, characterized in that: A second rectangular hole (12) is provided above the sliding support (10), a laser sensor (13) is provided inside the second rectangular hole (12), a second lead screw (14) is rotatably mounted above the side of the sliding support (10), a cavity (15) is provided at the front side of the second rectangular hole (12), a spring (16) is fixedly mounted inside the cavity (15), and a slider (17) is fixedly mounted at the top end of the spring (16).
3. The automobile engine crankshaft torsional vibration testing device according to claim 1, characterized in that: The middle part of the lead screw 1 (8) is threaded, and the lead screw 1 (8) passes through the support frame (6), and the contact part of the lead screw 1 (8) and the sliding support (10) is meshed.
4. The automobile engine crankshaft torsional vibration testing device according to claim 2, characterized in that: The bottom of the slider (17) is installed on the top of the spring (16), and the slider (17) is inserted into the cavity (15).
5. The automobile engine crankshaft torsional vibration testing device according to claim 1, characterized in that: A hole is provided at the bottom of the fixed slide rail (9), and the fixed slide rail (9) passes through rectangular hole one (11).
6. The automobile engine crankshaft torsional vibration testing device according to claim 1, characterized in that: A servo motor (18) is provided above the machine base (7), and a reflector (19) is fixedly installed on the rear side above the tooling base (1).