Electric proportional valve detection device

Abstract

The utility model discloses an electrical proportional valve detection device, which belongs to the technical field of electrical proportional valves, and comprises a bottom plate, the top surface of the bottom plate is fixedly connected with a lifting storage box, the bottom of the inner cavity of the lifting storage box is rotatably connected with two threaded rods, the outer sides of the two threaded rods are in threaded sleeve connection with lifting columns, and the lifting columns are in threaded sleeve connection with the lifting storage box. The top end of the lifting column extends to the top of the lifting storage box and is fixedly connected with a workbench, and a proportional valve detector is fixedly installed on the top face of the workbench. According to the lifting device, the worm is driven to rotate by rotating the rotating disc, the two threaded rods are driven to rotate synchronously through meshing transmission between the worm and the worm gear, the lifting column and the workbench are driven to move up and down through thread fit between the two threaded rods and the lifting column, and therefore the function of adjusting the height of the workbench is achieved; and meanwhile, the convenience of height adjustment of the workbench is ensured, and the practicability of the electric proportional valve detection device is improved.

Description

Technical Field

[0001] This utility model relates to the field of electric proportional valve technology, and more specifically, to an electric proportional valve detection device. Background Technology

[0002] An electro-proportional valve adjusts the cross-sectional area of ​​its valve core based on the magnitude of a control signal, thereby achieving the desired pressure level. Flow control by electro-proportional valves can be categorized into two types: on / off control and continuous control. Testing is required during the production and maintenance of electro-proportional valves.

[0003] A search revealed that utility model patent CN215677515U discloses an electro-proportional valve reuse detection device. This device can be adjusted according to the user's height, improving convenience and practicality. It can also fix electro-proportional valves of different sizes, improving reliability. The device includes a base plate with support columns fixedly connected to its top front and rear sides. Multiple through-type limiting grooves are evenly distributed at the front ends of the support columns. A concave block is fixedly connected to the end of the fixed plate furthest from the center of the worktable. A convex block is slidably connected to the end of the concave block furthest from the center of the worktable. A spring is fixedly connected to the end of the concave block furthest from the center of the worktable, and also to the end of the convex block furthest from the center of the worktable. A connecting block is provided at the end of the convex block furthest from the center of the worktable, and the bottom end of the connecting block is fixedly connected to the top of the worktable.

[0004] However, the aforementioned patents still have the following shortcomings: Adjusting the height using structures such as limiting grooves, limiting bolts, concave plates, and threaded holes is not very convenient; furthermore, relying on the cooperation of fixing plates, springs, concave blocks, convex blocks, and connecting blocks can only fix proportional valves of a certain size, and the limitations of clamping and fixing are still quite significant. Therefore, we propose an electro-proportional valve detection device. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide an electrical proportional valve detection device.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] An electrical proportional valve testing device includes a base plate. A lifting and storage box is fixedly connected to the top surface of the base plate. Two threaded rods are rotatably connected to the bottom of the inner cavity of the lifting and storage box. Lifting columns are threadedly sleeved on the outer sides of the two threaded rods. The top ends of the lifting columns extend to the top of the lifting and storage box and are fixedly connected to a worktable. A proportional valve tester is fixedly installed on the top surface of the worktable. A fixing mechanism is provided on the top surface of the worktable. Worm gears are fixedly sleeved on the outer sides of the bottom ends of the two threaded rods. A worm is rotatably connected to the inner cavity of the lifting and storage box. The worm meshes with the two worm gears. One end of the worm shaft extends to the outside of the lifting and storage box and is fixedly connected to a turntable. A handle is fixedly connected to the side of the turntable.

[0008] As a preferred embodiment of this utility model, the fixing mechanism includes a movable groove and a sliding groove formed on the top surface of the workbench. A sliding rod is fixedly sleeved in the inner cavity of the sliding groove, and two sliding plates are movably sleeved on the outer side of the sliding rod. A bidirectional lead screw is rotatably connected to the inner cavity of the movable groove. Movable seats are threadedly sleeved on the outer sides of both ends of the bidirectional lead screw. The top ends of the two movable seats and the two sliding plates extend to the top of the workbench and are fixedly connected to two clamping plates. Rubber pads are provided on the inner side of the two clamping plates. One end of the bidirectional lead screw extends to the outside of the workbench and is fixedly connected to a knob.

[0009] As a preferred embodiment of this utility model, the bottom surface of the base plate is fixedly connected with an anti-slip pad.

[0010] In a preferred embodiment of this utility model, the inner wall of the lifting storage box is fitted to the side of the lifting column.

[0011] In a preferred embodiment of this utility model, the side of the slide plate and the inner wall of the slide groove are fitted together.

[0012] In a preferred embodiment of this utility model, the side of the movable seat is in contact with the inner wall of the movable groove.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] (1) In this utility model, the worm is driven to rotate by rotating the turntable, and the two threaded rods are driven to rotate synchronously by the meshing transmission between the worm and the worm wheel. The threaded connection between the two threaded rods and the lifting column drives the lifting column and the worktable to move up and down, thereby realizing the function of adjusting the height of the worktable, while ensuring the convenience of adjusting the height of the worktable.

[0015] (2) In this utility model, when the electric proportional valve is placed on the inner side of the two clamping plates, the two clamping plates are driven to move closer to each other through the threaded engagement between the two-way screw and the moving seat. The electric proportional valve is clamped and fixed by the rubber pads on the inner side of the two clamping plates. On the one hand, the electric proportional valve can be conveniently clamped and fixed, and on the other hand, electric proportional valves of a larger range of sizes can be fixed and tested. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a top view of the structure of this utility model;

[0018] Figure 3 This is a cross-sectional view of the lifting storage box of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the clamping plate of this utility model.

[0020] Explanation of the labels in the diagram:

[0021] 1. Base plate; 2. Lifting storage box; 3. Threaded rod; 4. Worm gear; 5. Worm; 6. Turntable; 7. Handle; 8. Lifting column; 9. Workbench; 10. Proportional valve tester; 11. Moving groove; 12. Slide groove; 13. Slide rod; 14. Two-way lead screw; 15. Moving seat; 16. Slide plate; 17. Clamping plate; 18. Rubber pad; 19. Fixing mechanism; 20. Knob; 21. Anti-slip pad. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example:

[0026] Please see Figure 1-4 An electrical proportional valve testing device includes a base plate 1. A lifting and storage box 2 is fixedly connected to the top surface of the base plate 1. Two threaded rods 3 are rotatably connected to the bottom of the inner cavity of the lifting and storage box 2. Lifting columns 8 are threadedly sleeved on the outer sides of the two threaded rods 3. The top of the lifting columns 8 extends to the top of the lifting and storage box 2 and is fixedly connected to a worktable 9. A proportional valve tester 10 is fixedly installed on the top surface of the worktable 9. A fixing mechanism 19 is provided on the top surface of the worktable 9. Worm gears 4 are fixedly sleeved on the outer sides of the bottom ends of the two threaded rods 3. A worm 5 is rotatably connected to the inner cavity of the lifting and storage box 2. The worm 5 meshes with the two worm gears 4 respectively. One end of the worm 5 shaft extends to the outside of the lifting and storage box 2 and is fixedly connected to a turntable 6. A handle 7 is fixedly connected to the side of the turntable 6.

[0027] In this embodiment, the lead angle of the worm 5 is smaller than the equivalent friction angle between the meshing gear teeth, which makes the worm wheel 4 and the worm 5 self-locking. It can achieve reverse self-locking, so that only the worm 5 can drive the worm wheel 4 to rotate, and the worm wheel 4 cannot drive the worm 5 to rotate. This ensures that the worm wheel 4 and the threaded rod 3 can only be rotated by rotating the turntable 6 and the worm 5, so as to ensure that the lifting column 8 on the threaded rod 3 will not move up and down on its own. In addition, the proportional valve detector 10 is the prior art. The proportional valve detector 10 can statically detect the initial position, maximum stroke and sealing performance of the proportional valve core, and can also dynamically detect the proportional valve response time, flow characteristics, pressure characteristics and repeatability.

[0028] For details, please refer to Figure 1 , Figure 2 and Figure 4The fixing mechanism 19 includes a moving groove 11 and a sliding groove 12 formed on the top surface of the workbench 9. A sliding rod 13 is fixedly sleeved in the inner cavity of the sliding groove 12. Two sliding plates 16 are movably sleeved on the outer side of the sliding rod 13. A double-acting screw 14 is rotatably connected to the inner cavity of the moving groove 11. Moving seats 15 are threadedly sleeved on the outer sides of both ends of the double-acting screw 14. The top ends of the two moving seats 15 and the two sliding plates 16 extend to the top of the workbench 9 and are fixedly connected to two clamping plates 17. Rubber pads 18 are provided on the inner side of the two clamping plates 17. One end of the double-acting screw 14 extends to the outside of the workbench 9 and is fixedly connected to a knob 20.

[0029] In this embodiment, when the electro-proportional valve to be tested is placed on the top surface of the workbench 9 and located inside the two clamping plates 17, the two clamping plates 17 are driven to move closer to each other by the threaded engagement between the bidirectional lead screw 14 and the moving seat 15, and the electro-proportional valve is clamped and fixed by the rubber pads 18 inside the two clamping plates 17.

[0030] For details, please refer to Figure 1 The bottom surface of the base plate 1 is fixedly connected with an anti-slip pad 21.

[0031] In this embodiment, the anti-slip pad 21 is used to ensure the stability of the device and prevent it from sliding.

[0032] For details, please refer to Figure 3 The inner wall of the lifting storage box 2 fits against the side of the lifting column 8.

[0033] In this embodiment, the inner wall of the lifting storage box 2 is used to limit the lifting column 8, so that the lifting column 8 can only move up and down along the axial direction of the threaded rod 3.

[0034] For details, please refer to Figure 2 and Figure 4 The side of the slide plate 16 fits against the inner wall of the slide groove 12.

[0035] In this embodiment, the inner wall of the slide groove 12 is used to limit the slide plate 16, ensuring the stability of the slide plate 16 in the inner cavity of the moving groove 11, and ensuring that the slide plate 16 can only move along the axial direction of the slide rod 13.

[0036] For details, please refer to Figure 2 and Figure 4 The side of the movable seat 15 fits against the inner wall of the movable groove 11.

[0037] In this embodiment, the inner wall of the moving groove 11 is used to limit the moving seat 15, so that the moving seat 15 can only move along the axial direction of the bidirectional lead screw 14.

[0038] Working principle: In use, first, hold handle 7 to rotate turntable 6, which in turn rotates worm gear 5. The meshing transmission between worm gear 5 and two worm wheels 4 drives two threaded rods 3 to rotate synchronously. The threaded engagement between threaded rods 3 and lifting column 8 drives lifting column 8 to move up and down. The lifting column 8 is used to adjust the height of worktable 9 to a comfortable height for the tester. Then, place the electro-proportional valve to be tested on the top surface of worktable 9, and place the electro-proportional valve inside the two clamping plates 17. Next, turn knob 20 to rotate double-acting screw 14. The threaded engagement between double-acting screw 14 and two moving seats 15 drives the two moving seats 15 to move closer together. The moving seats 15 drive the two clamping plates 17 to move closer together, and at the same time, slide plate 16 slides on slide rod 13, so that the rubber pads 18 on the inner side of the two clamping plates 17 clamp and fix the electro-proportional valve. Finally, connect the connector on proportional valve tester 10 to the connector on electro-proportional valve, and use proportional valve tester 10 to test the electro-proportional valve.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. An electro-proportional valve detection device, comprising a base plate (1), characterized in that: The top surface of the base plate (1) is fixedly connected to a lifting storage box (2). The bottom of the inner cavity of the lifting storage box (2) is rotatably connected to two threaded rods (3). The outer sides of the two threaded rods (3) are threaded with lifting columns (8). The top of the lifting columns (8) extends to the top of the lifting storage box (2) and is fixedly connected to a workbench (9). The top surface of the workbench (9) is fixedly installed with a proportional valve detector (10). The top surface of the workbench (9) is provided with a fixing mechanism (19). The outer sides of the bottom ends of the two threaded rods (3) are respectively fixedly connected with worm gears (4). The inner cavity of the lifting storage box (2) is rotatably connected to a worm (5). The worm (5) meshes with the two worm gears (4) respectively. One end of the worm (5) shaft extends to the outside of the lifting storage box (2) and is fixedly connected to a turntable (6). The side of the turntable (6) is fixedly connected to a handle (7). The fixing mechanism (19) includes a moving groove (11) and a sliding groove (12) on the top surface of the workbench (9). A sliding rod (13) is fixedly sleeved in the inner cavity of the sliding groove (12). Two sliding plates (16) are movably sleeved on the outer side of the sliding rod (13). A double-acting screw (14) is rotatably connected to the inner cavity of the moving groove (11). Moving seats (15) are threaded onto the outer sides of both ends of the double-acting screw (14). The top ends of the two moving seats (15) and the two sliding plates (16) extend to the top of the workbench (9) and are fixedly connected to two clamping plates (17). Rubber pads (18) are provided on the inner side of the two clamping plates (17). One end of the double-acting screw (14) extends to the outside of the workbench (9) and is fixedly connected to a knob (20).

2. The electro-proportional valve detection device according to claim 1, characterized in that: The bottom surface of the base plate (1) is fixedly connected with an anti-slip pad (21).

3. The electro-proportional valve detection device according to claim 1, characterized in that: The inner wall of the lifting storage box (2) and the side of the lifting column (8) are in contact.

4. The electro-proportional valve detection device according to claim 1, characterized in that: The side of the slide plate (16) is in contact with the inner wall of the slide groove (12).

5. The electro-proportional valve testing device according to claim 1, characterized in that: The side of the movable seat (15) and the inner wall of the movable groove (11) are in contact.

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