Yield force testing device of engine circuit breaker shell

Abstract

The utility model relates to the technical field of circuit breaker shell testing, and discloses an engine circuit breaker shell yield force testing device which comprises a testing box and a hollow supporting table arranged at the lower end in the testing box. A mounting cavity located below the hollow supporting table is formed in the testing box, an air extracting pump is fixed in the mounting cavity, an air extracting opening of the air extracting pump is rotationally connected and communicated with a supporting pipe, the supporting pipe rotates upwards and penetrates to the inner bottom end of the testing box, and the lower end of the hollow supporting table is communicated with the upper end of the supporting pipe; according to the utility model, circuit breaker shells with various outlines and sizes can be conveniently positioned and placed, an additional clamping structure is not needed to position and clamp the circuit breaker shells, so that the circuit breaker shells can be conveniently and quickly positioned and installed, and the detection surface of the circuit breaker shells is not shielded by the clamping structure, so that the detection blind area is reduced, and the detection efficiency is improved. And the detection process is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker housing testing technology, specifically a yield strength testing device for engine circuit breaker housings. Background Technology

[0002] Circuit breakers are important devices in modern electrical systems. They are used to distribute electrical energy, infrequently start asynchronous motors, and protect power lines and motors. When they experience serious overloads, short circuits, or undervoltage faults, they can automatically disconnect the circuit. Their function is equivalent to a combination of a fuse switch and an over / under-temperature relay. The yield strength of the circuit breaker housing is also crucial.

[0003] Referring to Chinese Patent Publication No. CN220626035U, a housing pressure resistance testing device is disclosed, including a base and a testing assembly. The testing assembly includes a testing section, a bidirectional threaded screw, and two fixing components. The fixing components include a slider, a spring, a disc, a locking rod, a connecting block, and a clamping plate. The appropriate clamping plate is selected according to the model and size of the motor housing. The disc is pulled to move the locking rod out from inside the slider. Then, the connecting block is inserted into the slider, and the disc is released. The locking rod will then insert into a slot on the connecting block, fixing the clamping plate. When performing a pressure resistance test on the motor housing, the motor housing is placed on the base, and the bidirectional threaded screw is rotated to bring the two clamping plates closer together to fix the motor housing. Then, the pressure resistance test of the motor housing is performed through the testing section. This application allows for the replacement of the appropriate clamping plate according to the size of the motor housing, improving the fixing effect on the drive motor.

[0004] Referring to the above comparative documents, in the prior art, in order to ensure the yield strength of the engine circuit breaker housing, testing of each surface of the circuit breaker housing is particularly crucial. However, in the existing tests, it is generally necessary to first position and install the rectangular circuit breaker housing on a support platform. Since the positioning and installation of the circuit breaker housing is often done through a clamping structure, and the circuit breaker housing often needs to be clamped or loosened by the clamping structure, the positioning and installation of the circuit breaker housing is not convenient. Furthermore, during the test, the clamping structure will block the test surface of the circuit breaker housing, which can easily cause blind spots during the test and affect the normal test work.

[0005] Therefore, how to design a yield strength testing device for engine circuit breaker housing has become a problem that we need to solve. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this utility model provides a yield strength testing device for engine circuit breaker housings, solving the problems mentioned in the background section.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the present invention provides the following technical solution: a yield strength testing device for an engine circuit breaker housing, comprising a test box and a hollow support platform disposed at the lower end of the test box;

[0010] The test chamber has an installation cavity located below the hollow support platform. An air pump is fixed in the installation cavity. The air pump's air intake is rotatably connected to and communicates with a support pipe. The support pipe rotates upward and passes through to the bottom of the test chamber. The lower end of the hollow support platform communicates with the upper end of the support pipe. Several adsorption holes are opened on the upper end of the hollow support platform. A rotation drive assembly is provided in the installation cavity.

[0011] A hydraulic cylinder is fixed at the top of the test chamber. The power end of the hydraulic cylinder is connected to an upper pressure plate. A rectangular laser light strip is connected to the lower end of the upper pressure plate. An upper pressure sensor is fixed to the lower end of the upper pressure plate inside the rectangular laser light strip. The sensing end of the upper pressure sensor is connected to an upper detection plate.

[0012] The hollow support platform is provided with side pressure plates on both the left and right sides. A side pressure sensor is fixed inside the side pressure plate. The sensing end of the side pressure sensor is connected to a side detection plate. A push drive assembly is provided outside the side pressure plate.

[0013] Preferably, the rotary drive assembly includes a brake motor, a main gear, and a secondary gear. The brake motor is fixed to the top of the mounting cavity, the main gear is connected to the power end of the brake motor, and the secondary gear is fixedly sleeved around the support tube. The main gear and the secondary gear mesh.

[0014] Preferably, the push drive assembly includes a pressure rod, a push plate, a bidirectional lead screw, a forward and reverse motor, a drive gear, and a driven gear. The pressure rod has two parts, each fixed to the outside of the two side pressure plates. The pressure rods slide outward through the test box. The push plate has two parts, each fixed to the outer end of the two pressure rods.

[0015] Preferably, the bidirectional lead screw passes through the test box from left to right, the push plates are all threadedly connected to the bidirectional lead screw, the forward and reverse motors are fixed to the inner side wall of the mounting cavity, the driving gear is connected to the power end of the forward and reverse motors, and the driven gear is fixedly sleeved around the bidirectional lead screw.

[0016] Preferably, the test chamber is equipped with a lighting lamp and a camera, and the test chamber is equipped with a monitoring screen and a display.

[0017] Preferably, the front end of the test chamber is covered with a door.

[0018] (III) Beneficial Effects

[0019] This utility model provides a yield strength testing device for engine circuit breaker housings, which has the following features:

[0020] Beneficial effects:

[0021] Firstly, rectangular laser light strips project rectangular light onto the support platform. The resulting outline shape matches the rectangular circuit breaker housing, allowing the circuit breaker housing to be quickly positioned according to the rectangular light on the hollow support platform. Furthermore, the extension and retraction of the hydraulic cylinder moves the rectangular laser light up and down, facilitating the adjustment of the size of the rectangular light outline projected onto the hollow support platform. This adapts to circuit breaker housings of various sizes, making it convenient for positioning and placing circuit breaker housings of different sizes.

[0022] Secondly, by using the air pump and combining it with the adsorption holes, the circuit breaker housing is firmly adsorbed onto the hollow support platform, preventing the circuit breaker housing from shifting position. There is no need for additional clamping structures to position and clamp the circuit breaker housing, making the positioning and installation of the circuit breaker housing convenient and quick. Moreover, the circuit breaker housing is not obstructed by the clamping structure, thus reducing the blind spot and making the testing process more convenient.

[0023] Thirdly: By applying pressure to the circuit breaker housing through the upper detection plate, it is beneficial to test the yield strength of the upper and lower parts of the circuit breaker housing. Then, by applying pressure to the side of the circuit breaker housing through the side detection plate, it is beneficial to test the yield strength of the side of the circuit breaker housing. Combined with the operation of the rotary drive assembly to drive the hollow support platform and the circuit breaker housing to rotate, the circuit breaker housing can be easily switched, thus facilitating the testing of other sides. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the internal structure of the test chamber of this utility model;

[0026] Figure 3 This is a schematic diagram of the hollow support platform structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the planar structure of the test box of this utility model;

[0028] Figure 5 This is a schematic diagram of the planar structure of the upper pressure plate of this utility model;

[0029] Figure 6 This is a bottom view schematic diagram of the upper pressure plate structure of this utility model;

[0030] Figure 7 This is a schematic diagram of the planar structure of the hollow support platform of this utility model.

[0031] In the diagram: 1. Test chamber; 2. Hollow support platform; 3. Mounting cavity; 4. Support tube; 5. Adsorption hole; 6. Upper pressure plate; 7. Upper pressure sensor; 8. Upper detection plate; 9. Rectangular laser light strip; 10. Illumination lamp; 11. Camera; 12. Monitoring screen; 13. Display; 14. Side pressure plate; 15. Side pressure sensor; 16. Side detection plate; 17. Pressure rod; 18. Push plate; 19. Bidirectional lead screw; 20. Air pump; 21. Forward and reverse motor; 22. Drive gear; 23. Driven gear; 24. Brake motor; 25. Main gear; 26. Secondary gear; 27. Hydraulic cylinder; 28. Chamber door. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] 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 utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0035] like Figure 1-7As shown, this utility model provides a technical solution: a yield strength testing device for the housing of an engine circuit breaker, including a test box 1 and a hollow support platform 2 disposed at the lower end of the test box 1. The test box 1 has an installation cavity 3 located below the hollow support platform 2. A hydraulic cylinder 27 is fixed at the top of the test box 1. The power end of the hydraulic cylinder 27 is connected to an upper pressure plate 6. A rectangular laser light strip 9 is connected to the lower end of the upper pressure plate 6. An upper pressure sensor 7 is fixed to the lower end of the upper pressure plate 6 around the rectangular laser light strip 9. The sensing end of the upper pressure sensor 7 is connected to an upper detection plate 8.

[0036] Before placing the rectangular circuit breaker housing on the hollow support platform 2, a rectangular light strip 9 is first used to project a rectangular light onto the hollow support platform 2. The outline shape generated by the rectangular light projection matches the rectangular circuit breaker housing. Therefore, the circuit breaker housing can be quickly positioned according to the rectangular light on the hollow support platform 2. Moreover, the extension and retraction of the hydraulic cylinder 27 drives the upper pressure plate 6 and the rectangular laser light strip 9 to move up and down, which facilitates the adjustment of the size of the rectangular light outline projected onto the hollow support platform 2. This allows the rectangular light to adapt to circuit breaker housings of various sizes, making it convenient to position and place circuit breaker housings of various sizes.

[0037] In this embodiment, an air pump 20 is fixed inside the mounting cavity 3. The air pump 20 is rotatably connected to and communicates with a support pipe 4. The support pipe 4 rotates upward and passes through to the bottom of the test chamber 1. The lower end of the hollow support platform 2 is connected to the upper end of the support pipe 4. Several adsorption holes 5 are opened at the upper end of the hollow support platform 2.

[0038] When the circuit breaker housing is positioned on the hollow support platform 2, the air pump 20 is started, and air is then drawn into the hollow support platform 2 through the support pipe 4. The air then exerts an adsorption force on the circuit breaker housing through the adsorption hole 5, which helps to firmly adsorb the circuit breaker housing onto the hollow support platform 2, preventing the circuit breaker housing from shifting position. No additional clamping structure is needed to position and clamp the circuit breaker housing, making the positioning and installation of the circuit breaker housing convenient and quick. Moreover, the circuit breaker housing is not obstructed by the clamping structure, thus reducing the blind spot in the detection and making the detection process more convenient.

[0039] In this embodiment, a hydraulic cylinder 27 is fixed at the top of the test box 1. The power end of the hydraulic cylinder 27 is connected to an upper pressure plate 6. A rectangular laser light strip 9 is connected to the lower end of the upper pressure plate 6. An upper pressure sensor 7 is fixed to the lower end of the upper pressure plate 6 inside the rectangular laser light strip 9. The sensing end of the upper pressure sensor 7 is connected to an upper detection plate 8.

[0040] After the circuit breaker housing is positioned and installed, the hydraulic cylinder 27 drives the upper pressure plate 6, upper pressure sensor 7 and upper detection plate 8 to move down. With the upper pressure sensor 7 set to be connected to the display 13, the upper detection plate 8 will press down on the circuit breaker housing after moving down. At the same time, the upper detection plate 8 presses the upper pressure sensor 7, and the display 13 will display the measured pressure value. Therefore, the change in pressure value is useful for accurately testing the yield strength of the circuit breaker housing from top to bottom.

[0041] In this embodiment, the hollow support platform 2 is provided with side pressure plates 14 on both the left and right sides. Side pressure sensors 15 are fixed inside the side pressure plates 14. The sensing ends of the side pressure sensors 15 are connected to the side detection plates 16. A push drive assembly is provided outside the side pressure plates 14. The push drive assembly includes pressure rods 17, push plates 18, bidirectional lead screws 19, forward and reverse motors 21, drive gears 22 and driven gears 23. There are two pressure rods 17, which are fixed to the outside of the two side pressure plates 14. The pressure rods 17 slide outward and pass through the test box 1. There are two push plates 18, which are fixed to the outer ends of the two pressure rods 17. The bidirectional lead screws 19 are threaded through the test box 1 from left to right. The push plates 18 are threadedly sleeved with the bidirectional lead screws 19. The forward and reverse motors 21 are fixed to the inner side wall of the mounting cavity 3. The drive gears 22 are connected to the power end of the forward and reverse motors 21. The driven gears 23 are fixedly sleeved around the bidirectional lead screws 19.

[0042] When it is necessary to test the yield strength of the side of the circuit breaker housing, the operation of the forward and reverse motor 21 drives the drive gear 22, driven gear 23 and bidirectional lead screw 19 to rotate. At this time, the bidirectional lead screw 19 will drive the two push plates 18 to approach the test box 1 at the same time. During this process, the push plates 18 will drive the pressure rod 17, side pressure plate 14, side pressure sensor 15 and side detection plate 16 to approach the side of the circuit breaker housing. When the side detection plate 16 presses the side of the circuit breaker housing for testing, the side detection plate 16 will press the side pressure sensor 15. With the side pressure sensor 15 set to be connected to the display 13, the display 13 will display the measured pressure value. Therefore, the change in pressure value is helpful to accurately test the yield strength of the side of the circuit breaker housing.

[0043] In this embodiment, a rotary drive assembly is provided in the mounting cavity 3. The rotary drive assembly includes a brake motor 24, a main gear 25 and a secondary gear 26. The brake motor 24 is fixed to the top of the mounting cavity 3. The main gear 25 is connected to the power end of the brake motor 24. The secondary gear 26 is fixedly sleeved on the outside of the support tube 4. The main gear 25 and the secondary gear 26 mesh.

[0044] When testing other sides of the circuit breaker housing is required, without pressing the side detection plate 16 against the side of the circuit breaker housing, the main gear 25 is rotated 180 degrees and stopped by the operation of the brake motor 24. During this process, the main gear 25 will drive the secondary gear 26, the support tube 4, the hollow support platform 2, and the circuit breaker housing to rotate 180 degrees together and stop. Therefore, by combining the operation of the rotation drive assembly to drive the hollow support platform 2 and the circuit breaker housing to rotate, the detection surface of the circuit breaker housing can be easily changed, thus facilitating testing of other sides.

[0045] In this embodiment, a lighting lamp 10 and a camera 11 are installed inside the test box 1, a monitoring screen 12 and a display 13 are installed outside the test box 1, and a door 28 is covered at the front of the test box 1.

[0046] When testing the circuit breaker housing, the box door 28 is covered to prevent the circuit breaker housing from breaking and causing injury from fragments. The test box 1 is illuminated by the lighting lamp 10, and the testing process is monitored by the camera 11. With the camera 11 set to be connected to the monitoring screen 12, the monitoring screen 12 displays the monitoring screen during the test, which is convenient for intuitive viewing of the test process.

[0047] The working process of this utility model is as follows: First, a rectangular laser light strip 9 projects a rectangular light onto the hollow support platform 2, allowing the circuit breaker housing to be quickly positioned according to the rectangular light on the hollow support platform 2. Then, the air pump 20 is started, and air is drawn into the hollow support platform 2 through the support pipe 4. The air then exerts an adsorption force on the circuit breaker housing through the adsorption hole 5, facilitating its firm attachment to the hollow support platform 2. The hydraulic cylinder 27 drives the upper pressure plate 6, upper pressure sensor 7, and upper detection plate 8 to move downwards. After the upper detection plate 8 moves downwards, it presses down on the circuit breaker housing, simultaneously pressing the upper pressure sensor 7. The display 13 shows the measured pressure value. Furthermore, the forward and reverse motor 21 drives the drive gear 22, driven gear 23, and bidirectional lead screw 19 to rotate. At this time, the bidirectional lead screw 19 drives two push plates 18 to simultaneously approach the test chamber. 1. During this process, the push plate 18 will drive the pressure rod 17, the side pressure plate 14, the side pressure sensor 15, and the side detection plate 16 to approach the side of the circuit breaker housing until the side detection plate 16 presses against the side of the circuit breaker housing for testing. At the same time, the side detection plate 16 will press the side pressure sensor 15. With the side pressure sensor 15 set to be connected to the display 13, the display 13 will display the measured pressure value. Therefore, the change in pressure value is useful for accurately testing the yield strength of the side of the circuit breaker housing. Moreover, when the side detection plate 16 is not pressed against the side of the circuit breaker housing, the operation of the brake motor 24 drives the main gear 25 to rotate 180 degrees and stop. During this process, the main gear 25 will drive the auxiliary gear 26, the support tube 4, the hollow support platform 2, and the circuit breaker housing to rotate 180 degrees together and stop, which facilitates testing of other sides.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A yield force testing device for an engine circuit breaker housing, comprising a test box (1) and a hollow support platform (2) arranged at the lower end of the test box (1), characterized in that: The test box (1) is provided with an installation cavity (3) located below the hollow support platform (2), an air pump (20) is fixed in the installation cavity (3), the air suction port of the air pump (20) is rotatably connected and communicated with a support pipe (4), the support pipe (4) is rotated upward and penetrates to the bottom end of the test box (1), the lower end of the hollow support platform (2) is communicated with the upper end of the support pipe (4), the upper end of the hollow support platform (2) is provided with a plurality of adsorption holes (5), and a rotation drive component is provided in the installation cavity (3); A hydraulic cylinder (27) is fixed at the top of the test box (1); the power end of the hydraulic cylinder (27) is connected to an upper pressure plate (6); the lower end of the upper pressure plate (6) is connected to a rectangular laser light strip (9); an upper pressure sensor (7) fixed to the lower end of the upper pressure plate (6) is provided inside the rectangular laser light strip (9); the sensing end of the upper pressure sensor (7) is connected to an upper detection plate (8); The hollow support platform (2) is provided with side pressure plates (14) on both sides, and side pressure sensors (15) are fixed on the inner sides of the side pressure plates (14). The sensing ends of the side pressure sensors (15) are connected to side detection plates (16), and the side pressure plates (14) are provided with push drive components on the outside.

2. The yield force testing device for an engine circuit breaker housing according to claim 1, characterized in that: The rotary drive assembly comprises a brake motor (24), a main gear (25) and a sub gear (26); the brake motor (24) is fixed at the top end of the mounting cavity (3); the main gear (25) is connected to the power end of the brake motor (24); the sub gear (26) is fixedly sleeved on the outer periphery of the support tube (4); and the main gear (25) is meshed with the sub gear (26).

3. The yield force testing device for an engine circuit breaker housing according to claim 1, characterized in that: The push drive assembly comprises a pressure rod (17), a push plate (18), a bidirectional screw rod (19), a forward and reverse motor (21), a driving gear (22) and a driven gear (23). The pressure rod (17) is provided with two and is fixed one by one to the outer sides of the two side pressure plates (14). The pressure rods (17) are slid outward and penetrate the outside of the test box (1). The push plate (18) is provided with two and is fixed one by one to the outer ends of the two pressure rods (17).

4. The yield force testing device for an engine circuit breaker housing according to claim 3, characterized in that: The bidirectional screw (19) is threadedly inserted through the test box (1) from left to right, the push plate (18) is threadedly sleeved with the bidirectional screw (19), the forward and reverse motor (21) is fixed to the inner wall of the installation cavity (3), the driving gear (22) is connected to the power end of the forward and reverse motor (21), and the driven gear (23) is fixedly sleeved on the outer periphery of the bidirectional screw (19).

5. The yield force testing device for an engine circuit breaker housing according to claim 1, characterized in that: An illumination lamp (10) and a camera (11) are installed inside the test box (1), and a monitoring screen (12) and a display (13) are installed outside the test box (1).

6. The yield force testing device for an engine circuit breaker housing according to claim 1, characterized in that: The front end of the test box (1) is covered with a box door (28).

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