Pressure gauge hairspring elasticity testing fixture

Abstract

This utility model discloses a pressure gauge hairspring elasticity testing fixture, including a base plate. Support rods are fixed at the four corners of the upper surface of the base plate, and a top plate is fixed at the top of each support rod. A bracket is fixed at the middle of the upper surface of the top plate, and a cylinder is fixed at the middle of the bracket. A piston rod is installed at the output end of the cylinder, and a push plate is fixed at the end of the piston rod. A lifting plate is fixed at the bottom of the push plate. The support rod passes through the lifting plate, and the lifting plate and support rod are slidably connected. This utility model uses the cylinder to act on the piston rod, which in turn acts on the push plate, causing the push plate to push and pull the lifting plate, thus controlling the height of the lifting plate. The height between the base plate and the lifting plate can be adjusted. When the lifting plate clamps and fixes the hairspring on the base plate, the adjustment can be made according to the size of the hairspring. It has the advantages of wide applicability and low limitation.

Description

Technical Field

[0001] This utility model relates to the field of pressure gauge technology, and in particular to a pressure gauge hairspring elasticity testing fixture. Background Technology

[0002] A pressure gauge is an instrument that uses an elastic element as its sensing element to measure and indicate pressures higher than the ambient pressure. It is widely used and can be found in almost all industrial processes and scientific research fields. The hairspring of a pressure gauge is one of the core components of the movement of a Bourdon tube pressure gauge. It is usually made of a metal wire with good elasticity. In order to ensure that the pressure gauge achieves a certain measurement accuracy, the elasticity of the hairspring needs to be tested after the pressure gauge is manufactured.

[0003] However, existing clamps for testing the elasticity of pressure gauge hairsprings can only clamp and fix hairsprings of the same size, which limits their applicability and scope. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a pressure gauge hairspring elasticity testing fixture.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pressure gauge hairspring elasticity testing fixture includes a base plate, support rods fixed at the four corners of the upper surface of the base plate, a top plate fixed at the top of the support rods, a bracket fixed at the middle of the upper surface of the top plate, a cylinder fixed at the middle of the bracket, a piston rod installed at the output end of the cylinder, a push plate fixed at the end of the piston rod, a lifting plate fixed at the bottom of the push plate, the support rod passing through the lifting plate, and the lifting plate and the support rod being slidably connected.

[0007] By adopting the above technical solution, the lifting plate is controlled by components such as cylinders and push plates, which facilitates the adjustment of the height between the lifting plate and the base plate and makes it easy to use hairsprings of different sizes.

[0008] Preferably, a motor is fixed at the middle position of the upper surface of the lifting plate, and a threaded rod is installed at the output end of the motor. The threaded rod is movably connected to the lifting plate, and the two threads on the threaded rod are in opposite directions.

[0009] Preferably, the outer side of the threaded rod is symmetrically threaded with two movable plates, and the two movable plates pass through the lifting plate.

[0010] By adopting the above technical solution, the two moving plates move towards each other, so that the clamping plate on the outer side of the bottom of the moving plates clamps and fixes one end of the hairspring.

[0011] Preferably, the movable plate is fitted with a clamping plate on its outer side, and the clamping plate and the movable plate are slidably connected. The clamping plate has a movable cavity inside, and two springs are symmetrically arranged inside the movable cavity. One end of the spring is fixedly connected to the clamping plate and the other end is fixedly connected to the movable plate.

[0012] By adopting the above technical solution, the clamping plate can slide according to the height between the lifting plate and the base plate under the assistance of the spring, without affecting the fixation of one end of the hairspring.

[0013] Preferably, a groove is provided at the middle position of the upper surface of the lifting plate, and the groove matches the moving plate.

[0014] By adopting the above technical solution, the sliding plate moves on a fixed track with the assistance of the slide, thus preventing the sliding plate from rotating.

[0015] This utility model has the following beneficial effects:

[0016] The cylinder acts on the piston rod, which in turn acts on the push plate, causing the push plate to push and pull the lifting plate. This controls the height of the lifting plate and allows for adjustment of the height between the base plate and the lifting plate. When the lifting plate clamps and fixes the hairspring on the base plate, the height can be adjusted appropriately according to the size of the hairspring. This design has the advantages of wide applicability and low limitation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a structural schematic diagram of the top plate and the upper surface parts of the top plate of this utility model;

[0019] Figure 3 This is a schematic diagram of the push plate of this utility model;

[0020] Figure 4 This is a structural schematic diagram of the lifting plate and the upper surface parts of the lifting plate of this utility model;

[0021] Figure 5 This is a schematic diagram of the connection between the movable plate and the threaded rod of this utility model;

[0022] Figure 6 This is a partial planar structural diagram showing the connection between the clamping plate and the movable plate of this utility model.

[0023] In the diagram: 1. Base plate; 2. Support rod; 3. Top plate; 4. Bracket; 5. Cylinder; 6. Piston rod; 7. Push plate; 8. Lifting plate; 9. Motor; 10. Threaded rod; 11. Moving plate; 12. Clamping plate; 13. Movable cavity; 14. Spring; 15. Slide groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "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 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. Therefore, they should not be construed as limitations on this utility model.

[0026] Reference Figures 1-6 A pressure gauge hairspring elasticity testing fixture includes a base plate 1, support rods 2 fixed at the four corners of the upper surface of the base plate 1, a top plate 3 fixed at the top of the support rods 2, a bracket 4 fixed at the middle of the upper surface of the top plate 3, a cylinder 5 fixed at the middle of the bracket 4, a piston rod 6 installed at the output end of the cylinder 5, a push plate 7 fixed at the end of the piston rod 6, a lifting plate 8 fixed at the bottom of the push plate 7, the support rods 2 passing through the lifting plate 8, and the lifting plate 8 and the support rods 2 being slidably connected.

[0027] A motor 9 is fixed at the middle position of the upper surface of the lifting plate 8. A threaded rod 10 is installed at the output end of the motor 9. The threaded rod 10 is movably connected to the lifting plate 8, and the two threads on the two sides of the threaded rod 10 are opposite in direction. Two movable plates 11 are symmetrically connected to the outer side of the threaded rod 10, and the two movable plates 11 pass through the lifting plate 8.

[0028] A clamping plate 12 is fitted on the outside of the movable plate 11, and the clamping plate 12 is slidably connected to the movable plate 11. A movable cavity 13 is provided inside the clamping plate 12, and two springs 14 are symmetrically arranged inside the movable cavity 13. One end of the spring 14 is fixedly connected to the clamping plate 12 and the other end is fixedly connected to the movable plate 11.

[0029] A groove 15 is provided in the middle of the upper surface of the lifting plate 8, and the groove 15 matches the moving plate 11.

[0030] In this invention, when using a clamp to hold and fix the hairspring, the hairspring is first placed in the corresponding middle position of the base plate 1. The cylinder 5 is turned on, and the cylinder 5 acts on the piston rod 6, which in turn acts on the push plate 7. The push plate 7 then acts on the lifting plate 8, which descends to restrict the hairspring in the vertical direction. Then, the motor 9 is turned on, and the motor 9 rotates the threaded rod 10, causing the two moving plates 11 to move towards each other. The clamping plates 12 on the moving plates 11 extend and retract according to the height between the lifting plate 8 and the base plate 1 via the spring 14. The two clamping plates 12 clamp and fix one end of the hairspring, which facilitates the subsequent testing of the hairspring's elasticity.

[0031] 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 the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pressure gauge hairspring elasticity testing fixture, characterized in that, Includes a base plate (1), with support rods (2) fixed at the four corners of the upper surface of the base plate (1), a top plate (3) fixed at the top of the support rods (2), a bracket (4) fixed at the middle of the upper surface of the top plate (3), a cylinder (5) fixed at the middle of the bracket (4), a piston rod (6) installed at the output end of the cylinder (5), a push plate (7) fixed at the end of the piston rod (6), a lifting plate (8) fixed at the bottom of the push plate (7), the support rod (2) passes through the lifting plate (8), and the lifting plate (8) and the support rod (2) are slidably connected.

2. The pressure gauge hairspring elasticity testing fixture according to claim 1, characterized in that, A motor (9) is fixed at the middle position of the upper surface of the lifting plate (8). A threaded rod (10) is installed at the output end of the motor (9). The threaded rod (10) is movably connected to the lifting plate (8), and the threads on both sides of the threaded rod (10) are opposite in direction.

3. The pressure gauge hairspring elasticity testing fixture according to claim 2, characterized in that, The outer side of the threaded rod (10) is symmetrically threaded with two movable plates (11), which pass through the lifting plate (8).

4. The pressure gauge hairspring elasticity testing fixture according to claim 3, characterized in that, The movable plate (11) is fitted with a clamping plate (12) on its outer side, and the clamping plate (12) and the movable plate (11) are slidably connected. The clamping plate (12) has a movable cavity (13) inside, and two springs (14) are symmetrically arranged inside the movable cavity (13). One end of the spring (14) is fixedly connected to the clamping plate (12) and the other end is fixedly connected to the movable plate (11).

5. The pressure gauge hairspring elasticity testing fixture according to claim 1, characterized in that, A groove (15) is provided in the middle of the upper surface of the lifting plate (8), and the groove (15) matches the moving plate (11).

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