An explosion-proof motor end cover pressure resistance test tool

Abstract

The utility model relates to test frock technical field, concretely relates to a kind of explosion-proof motor end cover pressure resistance test frock, including test rack and pressure application fixing frame, pressure application fixing frame is used for positioning the explosion-proof motor end cover body to be tested, multiple positioning slots are equipped on pressure application fixing frame;When using, through the driving part drive mobile seat is lifted and moved in guide slot, the upper end of T-shaped plate is fixedly connected in mobile seat, its lower end is connected with sealing element, through the unique composite motion trajectory, driving part only needs to provide a vertical direction driving force, it can be automatically converted into the oblique pressure force to sealing element by mechanical structure, oblique pressure can produce a composite pressure force that simultaneously contains vertical and horizontal component force, can more effectively make sealing element even deformation, the microscopic gap between end cover and fixing frame is filled sufficiently, to realize more reliable, more efficient sealing, thoroughly avoid the problem that traditional bolt fastening mode is inefficient, sealing is uneven.

Description

Technical Field

[0001] This utility model relates to the field of testing fixture technology, and in particular to a pressure resistance testing fixture for an explosion-proof motor end cover. Background Technology

[0002] As an important component of the explosion-proof motor housing, the end cap of the explosion-proof motor is crucial for ensuring the overall explosion-proof safety of the motor by its pressure resistance and explosion-proof performance. Before the end cap leaves the factory or after the motor is overhauled, it must undergo a rigorous pressure test in accordance with national explosion-proof standards to verify its structural integrity and ensure that there are no casting defects such as cracks, pores, or sand holes that may affect the explosion-proof performance, as well as the sealing of the welds. Existing technologies often use a hydrostatic test method, which involves pressurizing and injecting water into the closed cavity formed by the explosion-proof motor end cap, and observing whether there are water droplets or seepage within a fixed pressure holding time.

[0003] However, after assembling the end cap onto the test bench and tightening all the bolts to form a complete explosion-proof cavity, a pressure test is performed. Each test requires complete bolt tightening and assembly work, and after the test is completed, the entire assembly and disassembly process must be disassembled. The assembly and disassembly process is time-consuming and laborious, occupying a lot of effective working time and making it impossible to achieve rapid clamping. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a pressure resistance test fixture for explosion-proof motor end caps, so as to solve the technical problem that the existing technology requires complete bolt tightening and assembly work for each test, and then complete disassembly after the test. The assembly and disassembly process is time-consuming and laborious, occupies a lot of effective working time, and cannot achieve rapid clamping.

[0005] To achieve the above objectives, this utility model provides a pressure resistance testing fixture for explosion-proof motor end caps, including a test bench and a pressure fixing frame. The pressure fixing frame is used to position the explosion-proof motor end cap body to be tested. The pressure fixing frame is provided with multiple positioning grooves, and the mating surface between the pressure fixing frame and the explosion-proof motor end cap body is provided with a sealing element. The testing fixture also includes: A guide plate is provided on the test bench, and a guide groove is provided on the guide plate. The guide groove includes a straight groove and an inclined groove connected to the straight groove. The pressure fixing bracket is provided on the guide plate. A movable seat that is slidably disposed within the guide groove; A T-shaped plate is fixedly connected to the movable seat, and the lower end of the T-shaped plate is connected to the sealing element; A guide plate is inclinedly disposed on the guide plate, and the guide plate is positioned below the pressure fixing frame; A drive unit for driving the movable seat to move up and down within the guide groove.

[0006] Furthermore, the sealing element is evenly distributed with several U-shaped grooves, each U-shaped groove corresponding to the top of the end cover body of each explosion-proof motor.

[0007] Furthermore, the guide plate is evenly distributed with guide grooves, which correspond to the explosion-proof motor end cover body.

[0008] Furthermore, the drive unit includes: A mounting plate fixedly mounted on the test bench; The cylinder is mounted on the mounting plate; A longitudinal sliding column fixedly mounted on the test bench; A slider is slidably disposed on the longitudinal sliding column, and the slider is connected to the output end of the cylinder; A transverse sliding post is provided on one side of the slider, and the movable seat is slidably disposed on the transverse sliding post.

[0009] Furthermore, the side end of the movable seat is rotatably provided with a roller, which is slidably disposed within the guide groove.

[0010] Furthermore, the sealing element is connected to the lower end of the T-shaped plate in an inclined state.

[0011] Furthermore, the other side of the seal is provided with a bent extension, which is connected to the side end of the explosion-proof motor end cover body.

[0012] Furthermore, a spring is fitted onto the transverse sliding column, with one end of the spring abutting against the test stand and the other end abutting against the movable seat.

[0013] The beneficial effects of this utility model are as follows: In use, the moving seat is driven by the drive unit to move up and down in the guide groove. Since the guide groove is composed of a straight groove and an inclined groove that is smoothly connected to it, the moving seat is slidably set in the guide groove. The upper end of the T-shaped plate is fixedly connected to the moving seat, and its lower end is connected to the sealing element. Through the unique composite motion trajectory, the drive unit only needs to provide a vertical driving force, which can be automatically converted into an oblique pressing force on the sealing element through the mechanical structure. The oblique pressing can generate a composite pressing force that includes both vertical and horizontal components, which can more effectively make the sealing element deform uniformly and fully fill the micro gaps between the end cover and the fixing frame, thereby achieving a more reliable and efficient seal and completely avoiding the problems of low efficiency and uneven sealing of traditional bolt fastening methods. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an assembly diagram of the drive unit and the sealing element in this utility model; Figure 3 This is a schematic diagram of the pressure fixing frame in this utility model; Figure 4 This is a schematic diagram of the assembly of the guide plate and the flow guide plate in this utility model.

[0016] The diagram is marked as follows: 1. Test bench; 2. Pressure fixing frame; 3. Explosion-proof motor end cover body; 4. Seal; 5. Guide plate; 6. Guide groove; 7. Movable seat; 8. T-shaped plate; 9. Flow guide plate; 10. U-shaped groove; 11. Flow guide groove; 12. Mounting plate; 13. Cylinder; 14. Longitudinal slide column; 15. Slider; 16. Transverse slide column; 17. Roller; 18. Bending extension; 19. Spring. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0018] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] The first aspect of this utility model proposes a pressure resistance testing fixture for explosion-proof motor end caps, such as... Figure 1-4As shown, the test fixture includes a test stand 1 and a pressure fixing frame 2. The pressure fixing frame 2 is used to position the explosion-proof motor end cover body 3 to be tested. The pressure fixing frame 2 is provided with multiple positioning grooves. The mating surface between the pressure fixing frame 2 and the explosion-proof motor end cover body 3 is provided with a sealing element 4. The test fixture also includes: A guide plate 5 is provided on the test bench 1. A guide groove 6 is provided on the guide plate 5. The guide groove 6 includes a straight groove and an inclined groove connected to the straight groove. The pressure fixing frame 2 is provided on the guide plate 5. A movable seat 7 is slidably disposed within the guide groove 6; A T-shaped plate 8 is fixedly connected to the movable base 7, and the lower end of the T-shaped plate 8 is connected to the sealing element 4; A guide plate 9 is inclinedly mounted on the guide plate 5, and the guide plate 9 is positioned below the pressure fixing frame 2; A drive unit for driving the movable seat 7 to move up and down within the guide groove 6.

[0020] In this embodiment, during use, several explosion-proof motor end cap bodies 3 are placed directly into multiple positioning slots on the pressure fixing frame 2. The moving seat 7 is driven by the drive unit to move up and down in the guide groove 6. Since the guide groove 6 is composed of a straight groove and an inclined groove that is smoothly connected to it, the moving seat 7 is slidably disposed in the guide groove 6. The upper end of the T-shaped plate 8 is fixedly connected to the moving seat 7, and its lower end is connected to the sealing element 4. Through a unique composite motion trajectory, the drive unit only needs to provide a vertical driving force, which can be automatically converted into an oblique pressing force on the sealing element 4 through the mechanical structure. The oblique pressing can generate a composite pressing force that includes both vertical and horizontal components, which can more effectively make the sealing element 4 deform uniformly and fully fill the micro gaps between the end cap and the fixing frame 2.

[0021] In this embodiment, as Figure 2 As shown, the sealing element 4 has several U-shaped grooves 10 evenly distributed on it. The U-shaped grooves 10 correspond to the top of each explosion-proof motor end cover body 3, and can achieve line contact or surface contact sealing with specific parts of each end cover. This further enhances the pertinence and effectiveness of the sealing, ensures the independence of each sealing cavity under high pressure test, and eliminates the possibility of mutual air leakage.

[0022] In this embodiment, as Figure 4 As shown, the guide plate 9 is evenly distributed with guide grooves 11, which correspond to the explosion-proof motor end cover body 3. By observing whether water droplets or seepage appear on the guide grooves 11, it can be directly determined which explosion-proof motor end cover body 3 to be tested has a quality problem.

[0023] In this embodiment, as Figure 2 As shown, the drive unit includes: Mounting plate 12 is fixedly installed on the test bench 1; Cylinder 13 is mounted on mounting plate 12; Longitudinal sliding column 14 fixedly mounted on test bench 1; A slider 15 is slidably mounted on the longitudinal slide column 14, and the slider 15 is connected to the output end of the cylinder 13; A transverse slide column 16 is provided on one side of the slider 15. The movable seat 7 is slidably provided on the transverse slide column 16. The slider 15 is moved by the output end of the cylinder 13. Under the guidance of the longitudinal slide column 14 and the transverse slide column 16, the movable seat 7 can move up and down in the guide groove 6.

[0024] In this embodiment, as Figure 2 As shown, the side end of the movable seat 7 is provided with a roller 17, which slides in the guide groove 6 to provide operational stability.

[0025] In this embodiment, as Figure 2 As shown, the sealing element 4 is connected to the lower end of the T-shaped plate 8 in an inclined state. The other side of the sealing element 4 is provided with a bent extension 18. The bent extension 18 and the side end of the explosion-proof motor end cover body 3 can form a covering with the side end of the explosion-proof motor end cover body 3. It not only presses and seals from the top, but also constrains and assists in sealing the end cover from the side, which greatly improves the redundancy and reliability of the overall seal. It is especially suitable for withstanding high-intensity explosive pressure.

[0026] In this embodiment, as Figure 1 As shown, a spring 19 is fitted on the transverse sliding column 16. One end of the spring 19 abuts against the test stand 1, and the other end of the spring 19 abuts against the movable seat 7. When the seal 4 contacts the end cap and begins to compress, the spring 19 can provide cushioning, absorb excessive pressure, and form a flexible clamping end to prevent damage to the precision end cap product or the seal 4 itself due to excessive cylinder thrust or part size error, thereby improving the safety of the equipment.

[0027] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention includes the claims being limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0028] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pressure resistance test fixture for an explosion-proof motor end cap, comprising a test stand (1) and a pressure fixing frame (2), wherein the pressure fixing frame (2) is used to position the explosion-proof motor end cap body (3) to be tested, characterized in that, The pressure fixing frame (2) is provided with multiple positioning grooves, and the mating surface between the pressure fixing frame (2) and the explosion-proof motor end cover body (3) is provided with a sealing element (4). The test fixture also includes: A guide plate (5) is provided on the test bench (1), and a guide groove (6) is provided on the guide plate (5). The guide groove (6) includes a straight groove and an inclined groove connected to the straight groove. The pressure fixing frame (2) is provided on the guide plate (5). A movable seat (7) is slidably disposed in the guide groove (6); A T-shaped plate (8) is fixedly connected to the movable seat (7), and the lower end of the T-shaped plate (8) is connected to the sealing element (4); A guide plate (9) is inclinedly disposed on the guide plate (5), and the guide plate (9) is positioned below the pressure fixing frame (2); A drive unit for driving the movable seat (7) to move up and down within the guide groove (6).

2. The pressure resistance testing fixture for an explosion-proof motor end cover according to claim 1, characterized in that, The sealing element (4) has several U-shaped grooves (10) evenly distributed on it, and the U-shaped grooves (10) correspond to the top of each explosion-proof motor end cover body (3).

3. The pressure resistance testing fixture for an explosion-proof motor end cover according to claim 1, characterized in that, The guide plate (9) is evenly distributed with guide grooves (11), and the guide grooves (11) correspond to the explosion-proof motor end cover body (3).

4. The pressure resistance testing fixture for an explosion-proof motor end cover according to claim 1, characterized in that, The drive unit includes: Mounting plate (12) fixedly mounted on the test bench (1); Cylinder (13) is mounted on the mounting plate (12); Longitudinal sliding column (14) fixed on the test bench (1); A slider (15) is slidably disposed on the longitudinal slide column (14), and the slider (15) is connected to the output end of the cylinder (13); A transverse slide post (16) is provided on one side of the slider (15), and the movable seat (7) is slidably provided on the transverse slide post (16).

5. The pressure resistance testing fixture for an explosion-proof motor end cover according to claim 4, characterized in that, The side end of the movable seat (7) is provided with a roller (17), which is slidably disposed in the guide groove (6).

6. The pressure resistance test fixture for an explosion-proof motor end cover according to claim 2, characterized in that, The sealing element (4) is connected to the lower end of the T-shaped plate (8) in an inclined state.

7. The pressure resistance testing fixture for an explosion-proof motor end cover according to claim 6, characterized in that, The other side of the seal (4) is provided with a bent extension (18), which is connected to the side end of the explosion-proof motor end cover body (3).

8. The pressure resistance testing fixture for an explosion-proof motor end cover according to claim 4, characterized in that, A spring (19) is fitted on the transverse sliding column (16). One end of the spring (19) abuts against the test stand (1), and the other end of the spring (19) abuts against the movable seat (7).

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