A compression detection device for an automobile water pump cover plate

Abstract

The application relates to the technical field of cover plate pressure resistance detection, in particular to an automobile water pump cover plate pressure resistance detection device which comprises a supporting seat, a belt conveying table, a sliding support, a cover plate limiting assembly, a pressurizing assembly and a local impact assembly. The automobile water pump cover plate pressure resistance detection device accurately simulates pressure pulsation and local stress in actual working conditions, effectively exposes fatigue strength deficiency and micro crack propagation risk which cannot be found by a traditional'surface pressurizing' mode, and enables an operator to replace impact points, flexibly adjust the concentration degree of load and improve the application range and detection potential of the device according to different detection standards or simulated different working conditions.

Description

Technical Field

[0001] This application relates to the field of pressure resistance testing technology for cover plates, and in particular to a pressure resistance testing device for automotive water pump cover plates. Background Technology

[0002] With the continuous development of science and technology in my country and the continuous improvement of people's living standards, almost every household has purchased a car for convenient travel. With the increase in the number of cars, the traffic accident rate in my country is also increasing. In order to reduce the harm caused by traffic accidents, the strength of the car cover is crucial. Therefore, it is necessary to conduct compressive strength testing on the car cover during production.

[0003] Chinese utility model patent CN220961004U discloses a device for testing the compressive strength of car covers. This device uses a lifting mechanism to raise and lower a protective plate, improving its stability during lifting and lowering, facilitating operation, and providing protection without affecting the placement of the car cover. This enhances safety during the testing process. After testing, a cleaning mechanism removes debris, sweeping it outside the device to prevent contamination and ensure accurate test data. This invention solves the problem of poor protective performance in current car cover compressive strength testing devices during compression testing.

[0004] Regarding the aforementioned technologies, the inventors believe the following technical deficiencies exist that require improvement: While the methods described above can assess the overall compressive strength of the cover plate, they have significant limitations, namely, the inability to simulate point and small-area cyclic loads caused by bolt tightening, localized impacts, or pressure pulsations in real-world scenarios. Therefore, existing devices cannot fully expose the fatigue strength and potential crack propagation risk of the cover plate at key stress points, resulting in a gap between their detection accuracy and actual engineering requirements. Utility Model Content

[0005] This application provides a pressure testing device for automotive water pump covers to address the following technical problem: traditional devices struggle to simulate point and small-area cyclic loads caused by bolt tightening, localized impacts, or pressure pulsations in real-world scenarios. Therefore, existing devices cannot adequately expose the fatigue strength and potential crack propagation risk of the cover at critical stress points, resulting in a gap between their testing accuracy and actual engineering requirements.

[0006] This application provides a pressure testing device for an automotive water pump cover, employing the following technical solution:

[0007] A pressure resistance testing device for an automotive water pump cover includes a support base, a belt conveyor, a sliding bracket, a cover plate limiting assembly, a pressurizing assembly, and a local impact assembly. The belt conveyor is fixedly connected to the top of the support base, the sliding bracket is slidably connected to the top of the support base, the cover plate limiting assembly is installed on both sides of the support base, the pressurizing assembly is installed on the sliding bracket above the belt conveyor, and the local impact assembly is installed above the center of the support base.

[0008] In one feasible technical solution of this application, the local impact assembly includes a raised platform, a lifting cylinder, a vertical rod, a lifting bracket, a DC motor, a rotating bracket with a shaft, and an impact head. The raised platform is fixedly connected to the top of the support base. The lifting cylinder is installed on the top of the raised platform. The vertical rod is fixedly connected below the output end of the lifting cylinder. The lifting bracket is fixedly connected to the bottom of the vertical rod, and the two sides of the lifting bracket are slidably connected to the inner side of the raised platform. The DC motor is installed in the middle of the lifting bracket. The rotating bracket with a shaft is fixedly connected below the output end of the DC motor. The impact head is fixedly connected to the outside of the protruding end of the rotating bracket with a shaft and is used for impacting a small area of ​​the cover plate.

[0009] In one feasible technical solution of this application, the pressurizing assembly includes a hydraulic cylinder, a lower pressure plate, and a pressure sensor. The hydraulic cylinder is installed on the top inner side of the sliding bracket, the lower pressure plate is fixedly connected below the output end of the hydraulic cylinder, and the pressure sensor is installed on both sides of the lower pressure plate.

[0010] In one feasible technical solution of this application, the cover plate limiting assembly includes a reduction motor and a threaded rod. The reduction motor is installed on the bottom outer side of the support base, and the threaded rod is installed on the outer side of the output end of the reduction motor. The external thread surface of the threaded rod is screwed to the bottom of the sliding bracket.

[0011] In one feasible technical solution of this application, an industrial camera for detecting the impact position surface of the cover plate is also provided in the middle of the lifting bracket.

[0012] In one feasible technical solution of this application, the inner wall of the elevated platform is further provided with a straight sliding track for limiting the movement path of the lifting support.

[0013] In one feasible technical solution of this application, the bottom of the sliding bracket is further provided with a threaded groove that matches the external thread size of the threaded rod.

[0014] In one feasible technical solution of this application, the impact head is provided in several groups, and the several groups of impact heads are arranged in a ring array at the bottom of the shaft-driven rotating bracket, and the impact end face widths of the several groups of impact heads are different.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] This device uses a DC motor-driven, shaft-rotating support with a localized impact assembly to apply high-frequency, cyclic impact loads to key points on the cover plate surface using impact heads of specific sizes. This accurately simulates pressure pulsations and localized stresses in actual working conditions, effectively exposing fatigue strength deficiencies and microcrack propagation risks that traditional "surface pressure" methods cannot detect. This significantly improves the targeting and accuracy of the testing. The device integrates the pressure assembly for overall compressive strength testing with the localized impact assembly for localized fatigue testing. A single set of equipment can comprehensively evaluate the macroscopic static strength and microscopic dynamic fatigue performance of the cover plate, avoiding multiple clamping and equipment switching. This not only improves testing efficiency but also ensures data consistency and comparability. Furthermore, the use of a ring array with multiple impact heads of varying impact face widths allows operators to quickly change impact points and flexibly adjust the load concentration according to different testing standards or simulated working conditions, thereby enhancing the device's applicability and testing potential. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the pressure testing device for an automobile water pump cover according to an embodiment of this application.

[0019] Figure 2 This is a top view of the support base in an embodiment of this application.

[0020] Figure 3 This is a schematic diagram of the pressurization component in an embodiment of this application.

[0021] Figure 4 This is a schematic diagram of the structure of the local impact component in the embodiments of this application.

[0022] Figure 5 yes Figure 4 Enlarged view of part A in the middle.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Support base; 2. Belt conveyor table; 3. Sliding bracket;

[0025] 4. Cover plate limiting assembly; 41. Gear motor; 42. Threaded rod;

[0026] 5. Pressurization assembly; 51. Hydraulic cylinder; 52. Lower pressure plate; 53. Pressure sensor;

[0027] 6. Local impact assembly; 61. Elevating platform; 62. Lifting cylinder; 63. Vertical rod; 64. Lifting bracket; 65. DC motor; 66. Rotating bracket with shaft; 67. Impact head;

[0028] 7. Industrial camera; 8. Straight slide rail; 9. Threaded groove. Detailed Implementation

[0029] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0030] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0031] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0033] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0034] This application discloses a pressure testing device for an automotive water pump cover. (Refer to...) Figures 1 to 5 The pressure testing device for the car water pump cover includes a support base 1, a belt conveyor 2, a sliding bracket 3, a cover plate limiting component 4, a pressurizing component 5, and a local impact component 6. The belt conveyor 2 is fixedly connected to the top of the support base 1, the sliding bracket 3 is slidably connected to the top of the support base 1, the cover plate limiting component 4 is installed on both sides of the support base 1, the pressurizing component 5 is installed on the sliding bracket 3 above the belt conveyor 2, and the local impact component 6 is installed above the middle of the support base 1.

[0035] The local impact assembly 6 includes a raised platform 61, a lifting cylinder 62, a vertical rod 63, a lifting bracket 64, a DC motor 65, a rotating bracket with a shaft 66, and an impact head 67. The raised platform 61 is fixedly connected to the top of the support base 1. The lifting cylinder 62 is installed on the top of the raised platform 61. The vertical rod 63 is fixedly connected below the output end of the lifting cylinder 62. The lifting bracket 64 is fixedly connected to the bottom of the vertical rod 63, and the two sides of the lifting bracket 64 are slidably connected to the inner side of the raised platform 61. The DC motor 65 is installed in the middle of the lifting bracket 64. The rotating bracket with a shaft 66 is fixedly connected below the output end of the DC motor 65. The impact head 67 is fixedly connected to the outside of the protruding end of the rotating bracket with a shaft and is used for impacting the cover plate in a small area.

[0036] When the local impact component 6 is activated, its lifting cylinder 62 pushes the lifting bracket 64 to descend smoothly along the straight slide rail 8 via the vertical rod 63, adjusting the impact head 67 to a preparatory position close to a specific point on the surface of the cover plate.

[0037] The pressurization assembly 5 includes a hydraulic cylinder 51, a lower pressure plate 52, and a pressure sensor 53. The hydraulic cylinder 51 is installed on the top inner side of the sliding bracket 3, the lower pressure plate 52 is fixedly connected to the lower end of the hydraulic cylinder 51, and the pressure sensor 53 is installed on both sides of the lower pressure plate 52.

[0038] Pressure sensors 53 installed on both sides of the lower pressure plate 52 collect and record pressure data in real time until the preset pressure value is reached or the cover plate deforms, thereby accurately measuring the overall macroscopic compressive strength of the cover plate.

[0039] The cover plate limiting assembly 4 includes a reduction motor 41 and a threaded rod 42. The reduction motor 41 is installed on the bottom outer side of the support base 1, and the threaded rod 42 is installed on the outer side of the output end of the reduction motor 41. The external thread surface of the threaded rod 42 is screwed to the bottom of the sliding bracket 3.

[0040] The cover plate limiting assembly 4 is activated, and its geared motor 41 drives the threaded rod 42 to rotate. By engaging with the threaded groove 9 at the bottom of the sliding bracket 3, the entire sliding bracket 3 is driven to move horizontally, so that it moves precisely above the cover plate and forms a stable limit on the cover plate, preparing for subsequent testing.

[0041] An industrial camera 7 for detecting the impact position surface of the cover plate is also installed in the middle of the lifting bracket 64.

[0042] The industrial camera 7, installed in the middle of the lifting bracket 64, performs real-time visual monitoring of the impact points, capturing microscopic changes on the material surface and providing direct evidence for analyzing fatigue strength and crack propagation trends.

[0043] The inner wall of the raised platform 61 is also provided with a straight sliding rail 8 to limit the movement path of the lifting support 64.

[0044] The bottom of the sliding bracket 3 is also provided with a threaded groove 9 that matches the external thread size of the threaded rod 42.

[0045] Several sets of impact heads 67 are arranged in a circular array at the bottom of the rotating support 66 with shaft, and the impact end face widths of the several sets of impact heads 67 are different.

[0046] The device can use multiple sets of impact heads 67 arranged in a ring array at the bottom of the rotating support 66 with different impact end face widths to perform fatigue tests with different concentrations at different points.

[0047] The usage process of the pressure testing device for the car water pump cover according to this application embodiment is roughly as follows:

[0048] The car water pump cover to be tested is conveyed to the middle of the device by the belt conveyor 2. Then, the cover limiting assembly 4 is activated, and its reduction motor 41 drives the threaded rod 42 to rotate. By engaging with the threaded groove 9 at the bottom of the sliding bracket 3, the sliding bracket 3 is driven to move horizontally on the support seat 1 until it reaches the preset clamping position, completing the positioning and fixing of the workpiece; after positioning is completed, the pressurizing assembly 5 starts to work. The hydraulic cylinder 51 installed on the top of the sliding bracket 3 drives the lower pressure plate 52 to move downward, applying pressure to the entire cover. The pressure sensors 53 integrated on both sides of the pressure plate monitor and feed back the pressure data in real time, thereby evaluating the overall compressive strength of the cover. Next, the device performs local fatigue testing on the key points of the cover. The lifting cylinder 62 of the local impact assembly 6 drives the lifting bracket 64 to descend precisely along the straight sliding track 8 through the vertical rod 63, adjusting the impact head 67 to a preparatory position close to the surface of the cover. Then, the DC motor 65 starts, driving the shaft rotating bracket 66 to rotate at high speed, and the impact head 67 fixed on it then applies high-frequency, cyclic impact to the surface of the cover. By replacing multiple sets of impact heads 67 with different impact end face widths on the rotating support, different concentrations of load can be flexibly simulated, enabling differentiated fatigue testing of multiple points on the cover plate. During this process, the industrial camera 7 installed in the middle of the lifting support 64 can observe and record the surface state changes of the impact points in real time, providing visual evidence for analyzing the initiation and propagation of microcracks.

[0049] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pressure resistance testing device for an automotive water pump cover, characterized in that, The device includes a support base (1), a belt conveyor (2), a sliding bracket (3), a cover plate limiting assembly (4), a pressurizing assembly (5), and a local impact assembly (6). The belt conveyor (2) is fixedly connected to the top of the support base (1), the sliding bracket (3) is slidably connected to the top of the support base (1), the cover plate limiting assembly (4) is installed on both sides of the support base (1), the pressurizing assembly (5) is installed above the sliding bracket (3) located above the belt conveyor (2), and the local impact assembly (6) is installed above the middle part of the support base (1).

2. The pressure resistance testing device for an automobile water pump cover according to claim 1, characterized in that, The local impact assembly (6) includes a platform (61), a lifting cylinder (62), a vertical rod (63), a lifting bracket (64), a DC motor (65), a rotating bracket with a shaft (66), and an impact head (67). The platform (61) is fixedly connected to the top of the support base (1). The lifting cylinder (62) is installed on the top of the platform (61). The vertical rod (63) is fixedly connected below the output end of the lifting cylinder (62). The lifting bracket (64) is fixedly connected to the bottom of the vertical rod (63), and the two sides of the lifting bracket (64) are slidably connected to the inner side of the platform (61). The DC motor (65) is installed in the middle of the lifting bracket (64). The rotating bracket with a shaft (66) is fixedly connected below the output end of the DC motor (65). The impact head (67) is fixedly connected to the outside of the protruding end of the rotating bracket with a shaft (66) and is used for impacting the cover plate in a small area.

3. The pressure resistance testing device for an automobile water pump cover according to claim 1, characterized in that, The pressurizing assembly (5) includes a hydraulic cylinder (51), a lower pressure plate (52), and a pressure sensor (53). The hydraulic cylinder (51) is installed on the top inner side of the sliding bracket (3). The lower pressure plate (52) is fixedly connected below the output end of the hydraulic cylinder (51). The pressure sensor (53) is installed on both sides of the lower pressure plate (52).

4. The pressure resistance testing device for an automobile water pump cover according to claim 1, characterized in that, The cover plate limiting assembly (4) includes a reduction motor (41) and a threaded rod (42). The reduction motor (41) is installed on the bottom outer side of the support base (1), and the threaded rod (42) is installed on the outer side of the output end of the reduction motor (41). The external thread surface of the threaded rod (42) is screwed to the bottom of the sliding bracket (3).

5. The pressure resistance testing device for an automobile water pump cover according to claim 2, characterized in that, An industrial camera (7) for detecting the impact position surface of the cover plate is also provided in the middle of the lifting bracket (64).

6. The pressure resistance testing device for an automobile water pump cover according to claim 2, characterized in that, The inner wall of the elevated platform (61) is also provided with a straight sliding rail (8) for restricting the movement path of the lifting support (64).

7. The pressure resistance testing device for an automobile water pump cover according to claim 4, characterized in that, The bottom of the sliding bracket (3) is also provided with a threaded groove (9) that matches the external thread size of the threaded rod (42).

8. The pressure resistance testing device for an automobile water pump cover according to claim 2, characterized in that, The impact head (67) is provided in several groups, and the several groups of impact heads (67) are arranged in a ring array at the bottom of the shaft rotating bracket (66), and the impact end face width of the several groups of impact heads (67) is different.

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