Nickel-titanium spring temperature and force value testing device

Abstract

The utility model relates to a nickel-titanium spring temperature and force value testing device which comprises a platform, a heating pad is carried on the top of the platform, a measuring cup is placed on the heating pad, the platform is provided with a rack at the rear side of the heating pad, the extending part of the front end of the rack is a lifting head, the lifting head lifts on the rack along a slide way, the bottom of the lifting head is suspended, and the measuring cup is placed on the measuring cup. A compression tool is arranged on the lifting head, a compression spring is installed in the compression tool, the top of the compression tool is connected with a tension meter, a thermocouple thermometer is further arranged on the lifting head, and the tail end of the thermocouple thermometer downwards extends out of the lifting head and can extend into the measuring cup. The nickel-titanium spring temperature and force value testing device provided by the utility model is low in cost, simple to assemble, and capable of changing the testing temperature environment, and realizes the digital representation of the force value, the temperature and the stretching amount of the nickel-titanium spring.

Description

Technical Field

[0001] The utility model relates to a nickel-titanium spring temperature and force value testing device. Background Art

[0002] Nickel-titanium alloy is a shape memory alloy, which is a special alloy that can automatically restore its plastic deformation to its original shape at a certain temperature. Ordinary springs comply with Hooke's law, and the force value is proportional to the elongation. However, nickel-titanium springs, due to their special material properties, do not satisfy Hooke's law, and the change in the force value is also closely related to the temperature. Therefore, nickel-titanium springs are also increasingly widely used as temperature control devices.

[0003] However, in the product design stage, the relationship between the force and temperature of the nickel-titanium spring needs to be more and more data-based. Most of the force measuring devices on the market cannot provide a certain temperature environment, so the force sensor cannot measure the elongation of the nickel-titanium spring under different temperature environments. Utility Model Content

[0004] In view of the above technical problems, the utility model provides a nickel-titanium spring temperature and force value testing device, which has low cost, high reliability and simple operation, and can provide clear data on the relationship between the force value, environment and elongation of the nickel-titanium spring by changing the test temperature of the nickel-titanium spring.

[0005] The purpose of the utility model is achieved in this way:

[0006] A nickel-titanium spring temperature and force value testing device comprises a platform, a heating pad is carried on the top of the platform, a measuring cup is placed on the heating pad, a frame is arranged on the rear side of the heating pad, the protruding part at the front end of the frame is a lifting head, the lifting head is lifted and lowered on the frame along a slide, the bottom of the lifting head is vacant, and a compression tool is arranged, a compression spring is installed in the compression tool, the top of the compression tool is connected to a tensile gauge, a thermocouple thermometer is also arranged on the lifting head, the end of the thermocouple thermometer protrudes downward from the lifting head and can be extended into the measuring cup.

[0007] The lifting head is controlled to rise and fall by a rotating handle arranged on the side of the frame.

[0008] The top end of the thermocouple temperature meter is connected to a thermocouple interface provided on the lifting head.

[0009] Compared with the prior art, the advantages of the utility model are:

[0010] The utility model discloses a nickel-titanium spring temperature and force value testing device with low cost and simple assembly, capable of changing the test temperature environment, and realizing the digital embodiment of the force value, temperature and stretching amount of the nickel-titanium spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model is a schematic diagram of a nickel-titanium spring temperature and force value testing device.

[0012] Among them: platform 1, heating pad 2, measuring cup 3, frame 4, lifting head 5, rotating handle 6, compression tooling 7, dynamometer 8, thermocouple thermometer 9, thermocouple interface 10. DETAILED DESCRIPTION

[0013] See also Figure 1 The utility model relates to a nickel-titanium spring environmental force value testing device, which includes a platform 1, a heating pad 2 is carried on the top of the platform 1, a measuring cup 3 is placed on the heating pad 2, a frame 4 is arranged on the rear side of the heating pad 2 of the platform 1, and the protruding part of the front end of the frame 4 is a lifting head 5, the lifting head 5 is lifted and lowered on the frame 4 along a slide, and the lifting head 5 is controlled to be lifted and lowered by a rotating handle 6 arranged on the side of the frame 4.

[0014] The bottom of the lifting head 5 is vacant and is provided with a compression fixture 7 , in which a compression spring is installed. The top of the compression fixture 7 is connected to a dynamometer 8 , which can measure the expansion and contraction amount of the compression fixture 7 .

[0015] The lifting head 5 is also provided with a thermocouple thermometer 9, the end of which extends downward from the lifting head 5 and can be inserted into the measuring cup 3 to measure the temperature of the liquid in the measuring cup to ensure that the temperature meets the measurement requirements. The top end of the thermocouple thermometer 9 is connected to a thermocouple interface 10 provided on the lifting head 5.

[0016] The first use of this nickel-titanium spring environmental force value test device is: place the nickel-titanium spring in a measuring cup, and operate the rotating handle to compress the compression tooling to a certain amount. At this time, turn on the heating pad to heat the liquid in the measuring cup, and observe the change of the force value of the nickel-titanium spring at different temperatures;

[0017] The second way of using: Place the nickel-titanium spring in a measuring cup, and operate the compression tool to compress it to a certain amount, turn on the heating pad to heat the liquid in the measuring cup to a certain temperature, and operate the rotating handle to continuously compress the nickel-titanium spring with the compression tool, so as to obtain the force value corresponding to different stretching amounts at the same temperature.

Claims

1. A nickel-titanium spring temperature and force value testing device, characterized by: The device comprises a platform (1), the top of which carries a heating pad (2), a measuring cup (3) being placed on the heating pad (2), a frame (4) being arranged on the rear side of the heating pad (2) of the platform (1), a protruding portion of the front end of the frame (4) being a lifting head (5), the lifting head (5) being lifted and lowered on the frame (4) along a slideway, the bottom of the lifting head (5) being vacant, and a compression fixture (7) being arranged, a compression spring being installed in the compression fixture (7), the top of the compression fixture (7) being connected to a tensile gauge (8), a thermocouple thermometer (9) being arranged on the lifting head (5), the end of the thermocouple thermometer (9) protruding downward from the lifting head (5) and being able to be inserted into the measuring cup (3).

2. A nickel-titanium spring temperature and force value testing device according to claim 1, characterized in that: The lifting head (5) is controlled to rise and fall by a rotating handle (6) arranged on the side of the frame (4).

3. A nickel-titanium spring temperature and force value testing device according to claim 1, characterized in that: The top end of the thermocouple thermometer (9) is connected to a thermocouple interface (10) provided on the lifting head (5).

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