A diaphragm spring strong pressure load test system

Abstract

The utility model provides a diaphragm spring strong pressure load test system relates to a load test system, including the upper die group of installation on the upper crossbeam and the lower die group of installation on the lower crossbeam, diaphragm spring is positioned on the lower die group, and is driven with the lower die group by the hydraulic cylinder and lifts, the upper die group includes the load fixed plate, upper die connecting plate and upper die from top to bottom in proper order distribution, the load fixed plate is fixed on the upper crossbeam, it is connected with the upper die connecting plate between many groups of load sensors which are evenly distributed along the circumference, and the upper die is installed on the upper die connecting plate, and with the lower die on the lower die group for positioning diaphragm spring lower die corresponds, the utility model discloses a plurality of load sensors, namely multichannel load acquisition channel, a plurality of load sensors evenly distribute along the circumference to adapt to the strong pressure test of large diameter diaphragm spring, solve the problem that load sensor gathers diaphragm spring one week load uneven, make diaphragm load test data can be more accurate.

Description

Technical Field

[0001] This utility model relates to a load testing system, and more particularly to a diaphragm spring high-pressure load testing system. Background Technology

[0002] Diaphragm springs are a key component of clutch assemblies and are indispensable in the clutch assembly production process.

[0003] After the diaphragm spring is manufactured, it needs to undergo a load test before leaving the factory. Only when the load meets the standard can it be allowed to leave the factory. The process before the load test is strong pressure. The purpose of strong pressure is to remove the residual internal stress generated during the production process of the diaphragm spring. When the diaphragm spring is strong pressured several times, the residual stress can be evenly distributed and released, or even eliminated, so that the diaphragm spring has the optimal load-bearing capacity.

[0004] Currently, several domestic companies have developed equipment for stress relief of diaphragm springs using both high and low pressure methods, but these lack load detection functionality. Alternatively, some companies have developed equipment that combines high pressure and load detection for diaphragm springs, but this has drawbacks. For example, current technology typically uses a single load sensor to collect force values. This can lead to significant errors in the collected load values ​​when encountering large-diameter diaphragm springs or those with uneven processing defects around the diaphragm spring. Even if software algorithms can correct the force values, the original collected force values ​​are inherently inaccurate. Furthermore, with daily use, the collected true values ​​will fluctuate randomly and unpredictably, even after software revisions. Utility Model Content

[0005] To address the aforementioned technical problems, the purpose of this utility model is to provide a diaphragm spring high-pressure load testing system. By employing multiple sets of load sensors, i.e., multiple load acquisition channels, and with the multiple sets of load sensors evenly distributed circumferentially, it can adapt to the high-pressure testing of large-diameter diaphragm springs, thus solving the problem of uneven load acquisition around the diaphragm spring by the load sensors, and making the diaphragm load test data more accurate.

[0006] This utility model provides the following technical solution:

[0007] A diaphragm spring high-pressure load testing system includes an upper module mounted on an upper crossbeam and a lower module mounted on a lower crossbeam. The diaphragm spring is positioned on the lower module and is driven by a hydraulic cylinder to rise and fall with the lower module. The upper module includes a load fixing plate, an upper mold connecting plate, and an upper mold arranged sequentially from top to bottom. The load fixing plate is fixed on the upper crossbeam and is connected to the upper mold connecting plate by multiple sets of load sensors evenly distributed circumferentially. The upper mold is mounted on the upper mold connecting plate and corresponds to the lower mold on the lower module used for positioning the diaphragm spring.

[0008] In this testing system, multiple load sensors are used, i.e., multiple load acquisition channels, and multiple load sensors are evenly distributed along the circumference to adapt to the high pressure test of large-diameter diaphragm springs. This solves the problem of uneven load acquisition of the diaphragm spring around the circumference by the load sensors, and makes the diaphragm load test data more accurate.

[0009] Preferably, the mounting end and sensing end of the load sensor are respectively mounted on the load fixing plate and the upper mold connecting plate via an I-shaped rod. The load fixing plate and the upper mold connecting plate are coaxially distributed circles, and a guide groove is provided on them for the I-shaped rod to slide radially. A screw is also installed in the guide groove. The screw is screwed into the I-shaped rod to drive the I-shaped rod to slide radially. A set of conical gear rings is installed at the end of the screw. A set of bevel gears one meshing with the corresponding conical gear rings is rotated at the center of the load fixing plate. A set of bevel gears two meshing with the corresponding conical gear rings is rotated at the center of the upper mold connecting plate. A set of rotary motors is installed on the upper crossbeam. The driving end of the rotary motors is provided with a cross-shaped drive rod inserted at the center of bevel gears one and two.

[0010] At this point, when the rotary motor drives the cross-shaped drive rod to rotate, it can synchronously drive the screws distributed on the load fixing plate and the upper mold connecting plate to rotate. Then, through the synchronous movement of the I-shaped hanger in the guide groove, the load sensor between the load fixing plate and the upper mold connecting plate can be driven to slide radially outward or inward, thus better adapting to the high-pressure test of diaphragm springs of different diameters.

[0011] Preferably, the lower mold assembly includes a lower mold pad for mounting the lower mold and multiple sets of guide posts positioned on the bottom side of the lower mold pad and guided on the lower crossbeam. A limiting ring is detachably connected to the lower mold. The limiting ring is used to limit the circumference of the diaphragm spring to limit the circumference of the diaphragm spring during high-pressure testing. Since the limiting ring is detachably connected to the lower mold by means of screws, it is convenient for later maintenance and replacement.

[0012] Preferably, the hydraulic cylinder is mounted on the lower crossbeam, and its drive end is connected to the lower mold pad through an adapter. The center of the lower mold is sleeved and connected to the adapter and fixed by bolts. Therefore, the adapter can be replaced according to the lower mold of different specifications, without replacing the lower mold pad or purchasing the whole set of equipment again, which can save the labor intensity of mold replacement or save costs.

[0013] Preferably, a pressure follow-up valve is added to the oil supply system of the hydraulic cylinder, which can make the displacement of the hydraulic cylinder smooth during the displacement control process, thereby making the load curve more accurate.

[0014] The beneficial effects of this utility model are as follows: By employing multiple sets of load sensors, i.e., multiple load acquisition channels, and with multiple sets of load sensors evenly distributed circumferentially, this utility model can adapt to the high-pressure test of large-diameter diaphragm springs, solving the problem of uneven load acquisition of the diaphragm spring around its circumference by the load sensors, thus making the diaphragm load test data more accurate. Furthermore, by adding guide grooves, screws, conical gear rings, bevel gear one, bevel gear two, and a rotary motor structure to the load fixing plate and the upper mold connecting plate, when the rotary motor drives the cross-shaped drive rod to rotate, it can synchronously drive the screws distributed on the load fixing plate and the upper mold connecting plate to rotate. Then, through the synchronous movement of the I-shaped hanger in the guide groove, the load sensors between the load fixing plate and the upper mold connecting plate can be driven to slide radially outward or inward, thereby better adapting to the high-pressure test of diaphragm springs of different diameters. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is the front view of the present invention in Embodiment 1;

[0017] Figure 2 yes Figure 1 Front sectional view;

[0018] Figure 3 This is a schematic diagram showing the distribution of the load-fixing plate, the upper mold connecting plate, and the upper mold.

[0019] Figure 4 This is a schematic diagram of the structure of the upper mold connecting plate with added guide grooves and screw distribution in Embodiment 2;

[0020] Figure 5 This is a front cross-sectional view of a load sensor installed between the load fixing plate and the upper mold connecting plate;

[0021] Figure 6 This is a schematic diagram of the oil source system in Example 3;

[0022] Markings in the diagram:

[0023] 101. Upper crossbeam; 102. Lower crossbeam; 103. Load sensor; 104. Hydraulic cylinder; 105. Load fixing plate; 106. Upper mold connecting plate; 107. Upper mold; 108. I-beam lifting rod; 109. Guide groove; 110. Screw; 111. Conical gear ring; 112. Bevel gear one; 113. Bevel gear two; 114. Drive rod; 115. Lower mold pad; 116. Guide column; 117. Limiting ring; 118. Adapter; 119. Diaphragm spring; 1. Oil tank; 2. Level gauge; 3. Electric heater; 4. Oil temperature and level sensor; 5. Air filter; 6. Motor; 7. Coupling; 8. Gear pump; 9. Suction filter; 10. Check valve; 11. Oil distributor block; 12. High pressure filter; 13. Overflow valve; 14. Pressure gauge; 15. Pressure follow-up valve. Detailed Implementation

[0024] Example 1

[0025] like Figure 1-3 As shown, a diaphragm spring 119 high-pressure load testing system, in this embodiment, includes an upper module mounted on an upper crossbeam 101 and a lower module mounted on a lower crossbeam 102. The diaphragm spring 119 is positioned on the lower module and is driven by a hydraulic cylinder 104 to rise and fall with the lower module. The upper module includes a load fixing plate 105, an upper mold connecting plate 106, and an upper mold 107 distributed sequentially from top to bottom. The load fixing plate 105 is fixed on the upper crossbeam 101, and multiple sets of load sensors 103 evenly distributed circumferentially are connected between it and the upper mold connecting plate 106. The upper mold 107 is mounted on the upper mold connecting plate 106 and corresponds to the lower mold on the lower module used to position the diaphragm spring 119.

[0026] In this invention, multiple load sensors 103, i.e. multiple load acquisition channels, are used. The multiple load sensors 103 are evenly distributed along the circumference to adapt to the high pressure test of the large-diameter diaphragm spring 119. This solves the problem of uneven load acquisition of the diaphragm spring 119 by the load sensor 103, and makes the diaphragm load test data more accurate.

[0027] Example 2

[0028] like Figure 4-5As shown, a diaphragm spring 119 high-pressure load testing system, in this embodiment, the mounting end and sensing end of the load sensor 103 are respectively mounted on the load fixing plate 105 and the upper mold connecting plate 106 via an I-shaped suspension rod 108. The load fixing plate 105 and the upper mold connecting plate 106 are coaxially distributed circles, and a guide groove 109 is provided on them for the I-shaped suspension rod 108 to slide radially. A screw 110 is also installed in the guide groove 109. The screw 110 is screwed into the I-shaped suspension rod 108 to drive the load sensor 103. The U-shaped lifting rod 108 slides radially. A set of conical gear rings 111 are installed at the end of the screw 110. A set of bevel gears 112 that mesh with the corresponding conical gear rings 111 are rotated at the center of the load fixing plate 105. A set of bevel gears 113 that mesh with the corresponding conical gear rings 111 are rotated at the center of the upper mold connecting plate 106. A set of rotary motors are installed on the upper crossbeam 101. The drive end of the rotary motors is provided with a cross-shaped drive rod 114 inserted at the center of the bevel gears 112 and 113.

[0029] Thus, when the rotary motor drives the cross-shaped drive rod 114 to rotate, it can synchronously drive the screws 110 distributed on the load fixing plate 105 and the upper mold connecting plate 106 to rotate. Then, through the synchronous movement of the I-shaped hanger 108 in the guide groove 109, the load sensor 103 between the load fixing plate 105 and the upper mold connecting plate 106 can be driven to slide radially outward or inward, thereby better adapting to the high-pressure test of diaphragm springs 119 of different diameters.

[0030] The lower mold assembly includes a lower mold pad 115 for mounting the lower mold and multiple sets of guide posts 116 positioned on the bottom side of the lower mold pad 115 and guided on the lower crossbeam 102. A limiting ring 117 is detachably connected to the lower mold. The limiting ring 117 is used to limit the circumference of the diaphragm spring 119 to a peripheral position during high-pressure testing. Since the limiting ring 117 is detachably connected to the lower mold by means of screws, it is convenient for later maintenance and replacement.

[0031] The hydraulic cylinder 104 is mounted on the lower crossbeam 102. Its drive end is connected to the lower mold pad 115 through the adapter 118. The center of the lower mold is sleeved and connected to the adapter 118 and fixed by bolts. Therefore, the adapter 118 can be replaced according to the lower mold of different specifications. There is no need to replace the lower mold pad 115 or repurchase the whole set of equipment, which can save the labor intensity of mold replacement or save costs.

[0032] Example 3

[0033] like Figure 6As shown, a diaphragm spring high-pressure load testing system is provided in this embodiment, which is a further limitation based on embodiment 1. A pressure follow-up valve 15 is added to the oil source system of the hydraulic cylinder, which can make the hydraulic cylinder move smoothly during the displacement control process, thereby making the load curve more accurate.

[0034] The oil supply system includes an oil tank 1, a level gauge 2, an electric heater 3, an oil temperature and level sensor 4, an air filter 5, an oil supply motor 6, a coupling 7, a gear pump 8, an oil suction filter 9, a check valve 10, an oil distributor block 11, a high-pressure filter 12, an overflow valve 13, a pressure gauge 14, a pressure follow-up valve 15, an oil cooler ball valve 1, and an oil cooler ball valve 2. The oil suction filter 9 is installed inside the oil tank 1 and connected to the gear pump 8 via a pipeline. The gear pump 8 is mounted on the oil supply motor 6 via the coupling 7 and fixed together to the oil tank 1. The gear pump 8 is connected to the oil distributor block 11 via the check valve 10. The check valve 10 and the valve... The high-pressure filter 12, pressure gauge 14, overflow valve 13, and pressure follow-up valve 15 on the block are connected; the oil distribution valve block 11 is fixed to the oil tank 1; the P port, T port, and A port of the oil distribution valve block 11 are connected to the P port, T port, and A port on the hydraulic cylinder, respectively; the oil cooler ball valve 16 is connected to the oil cooler oil inlet, and the oil cooler ball valve 17 is connected to the oil cooler oil outlet, which can ensure that the hydraulic oil in the oil tank 1 is always kept at an oil temperature of about 30°C. If used in a cold environment, the electric heater 3 can be turned on to ensure that the hydraulic oil temperature in the oil tank 1 is controlled at about 30°C, so that the hydraulic oil works within a safe and stable temperature range.

[0035] The working principle of this utility model is as follows: This utility model employs multiple sets of load sensors 103, i.e., multiple load acquisition channels, evenly distributed circumferentially, to adapt to the high-pressure testing of the large-diameter diaphragm spring 119. This solves the problem of uneven load acquisition around the diaphragm spring 119 by the load sensors 103, making the diaphragm load test data more accurate. Furthermore, by adding guide grooves 109, screws 110, conical gear rings 111, and bevel gears to the load fixing plate 105 and the upper mold connecting plate 106... The structure of the bevel gear 112 and the rotary motor 113 allows the rotary motor to drive the cross-shaped drive rod 114 to rotate, which in turn drives the screws 110 distributed on the load fixing plate 105 and the upper mold connecting plate 106 to rotate. Then, the load sensor 103 between the load fixing plate 105 and the upper mold connecting plate 106 can be driven to slide radially outward or inward through the synchronous movement of the I-shaped hanger 108 in the guide groove 109. This allows for better adaptation to the high-pressure test of diaphragm springs 119 of different diameters.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A diaphragm spring high compression load testing system, characterized by, The system includes an upper module mounted on an upper crossbeam and a lower module mounted on a lower crossbeam. A diaphragm spring is positioned on the lower module and is driven by a hydraulic cylinder to move up and down with the lower module. The upper module includes a load fixing plate, an upper mold connecting plate, and an upper mold arranged sequentially from top to bottom. The load fixing plate is fixed on the upper crossbeam and is connected to the upper mold connecting plate by multiple sets of load sensors evenly distributed circumferentially. The upper mold is mounted on the upper mold connecting plate and corresponds to the lower mold on the lower module used to position the diaphragm spring.

2. The diaphragm spring high-pressure load test system according to claim 1, characterized in that The mounting end and sensing end of the load sensor are respectively mounted on the load fixing plate and the upper mold connecting plate via an I-shaped rod. The load fixing plate and the upper mold connecting plate are coaxially distributed circles. The load fixing plate and the upper mold connecting plate are also provided with guide grooves for the I-shaped rod to slide radially. A screw is also installed in the guide groove. The screw is screwed into the I-shaped rod to drive the I-shaped rod to slide radially. A set of conical gear rings are installed at the end of the screw. A set of bevel gears I that meshes with the corresponding conical gear rings is rotated at the center of the load fixing plate. A set of bevel gears II that meshes with the corresponding conical gear rings is rotated at the center of the upper mold connecting plate. A set of rotary motors is installed on the upper crossbeam. The drive end of the rotary motors is provided with a cross-shaped drive rod inserted at the center of bevel gears I and II.

3. The diaphragm spring high-pressure load test system according to claim 1, characterized in that The lower module includes a lower mold pad for mounting the lower mold and multiple sets of guide posts positioned on the bottom side of the lower mold pad and guided on the lower crossbeam. A limiting ring is detachably connected to the lower mold. The limiting ring is used to limit the circumference of the diaphragm spring to limit the circumference of the diaphragm spring during high pressure testing.

4. The diaphragm spring high-pressure load test system according to claim 3, characterized in that The hydraulic cylinder is mounted on the lower crossbeam, and its drive end is connected to the lower mold pad through an adapter. The center of the lower mold is sleeved and connected to the adapter and fixed by bolts.

5. The diaphragm spring high-pressure load test system according to claim 1, characterized in that The hydraulic cylinder's oil supply system is equipped with a pressure follow-up valve, which enables the hydraulic cylinder to move smoothly during displacement control, thereby making the load curve more accurate.

Images