Spring stress relaxation test device

Abstract

The utility model discloses a spring stress relaxation testing device, which relates to the technical field of spring testing and comprises a main box body and a testing assembly, supporting column feet are mounted at the bottom of the main box body, and the testing assembly is arranged in the main box body. The test assembly comprises a servo motor, a lead screw, a movable sliding block, a first limiting hook, limiting through holes, a limiting rod and a second limiting hook, the lead screw is connected to the front end of the servo motor, the movable sliding block is connected to the exterior of the lead screw, the first limiting hook is installed at the upper end of the inner side of the movable sliding block, and meanwhile the limiting through holes are formed in the two sides of the interior of the movable sliding block; a limiting rod is connected into the limiting through hole, a second limiting hook is installed on the right side in the main box body, and a sealing assembly is arranged at the upper end of the main box body. According to the spring stress relaxation test device, the to-be-tested spring can be stably stretched, the situation of uneven stress of the spring is avoided, and the overall practicability and the use efficiency of the spring stress relaxation test device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spring testing, in particular to a spring stress relaxation testing device. Background Art

[0002] The spring stress relaxation test is a test that measures the gradual decrease in stress over time by applying a constant tensile strain to a spring at a constant temperature. This test is primarily used to evaluate the performance of springs under high temperatures and prolonged loads. In particular, in high-temperature environments, the stress in a spring gradually decreases over time. This phenomenon is called stress relaxation. The spring stress relaxation test is crucial for evaluating the performance of springs in high-temperature working environments. For example, parts in high-temperature working environments lose their elasticity and tightening function due to stress relaxation. Therefore, it is necessary to measure the relaxation properties of fasteners such as springs and bolts used in high-temperature environments. However, existing spring stress relaxation test equipment still has the following shortcomings:

[0003] When using existing test devices, since most test devices are not convenient for stably stretching the spring to be tested, the spring is easily affected by uneven force and the test structure is easily affected, resulting in inaccurate test data, resulting in reduced practicality of the test device and reduced efficiency.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a spring stress relaxation test device is proposed. Utility Model Content

[0005] The purpose of the present invention is to provide a spring stress relaxation test device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a spring stress relaxation test device, comprising a main box and a test assembly, wherein a support column foot is installed at the bottom of the main box, a test assembly is arranged inside the main box, and the test assembly includes a servo motor, a screw rod, a movable slider, a first limit hook, a limit through hole, a limit rod and a second limit hook, the front end of the servo motor is connected to a screw rod, and the outside of the screw rod is connected to a movable slider, and a first limit hook is installed at the upper end of the inner side of the movable slider, and limiting through holes are opened on both sides of the inside of the movable slider, the limiting through hole is connected to the limiting rod, the second limit hook is installed on the right side of the inside of the main box, and a sealing assembly is provided at the upper end of the main box.

[0007] Furthermore, the outer dimensions of the movable slider are adapted to the inner dimensions of the main box body, and the movable slider is slidably connected to the main box body via a screw rod.

[0008] Furthermore, the inner dimensions of the limiting through hole are matched with the outer dimensions of the limiting rod, and the limiting rod is embedded in the movable slider through the limiting through hole.

[0009] Furthermore, there are two limit rods, and the two limit rods are symmetrically arranged on both sides of the movable slider with respect to the front center axis of the movable slider.

[0010] Furthermore, the sealing assembly includes a box cover, an auxiliary pull ring, an observation window and a rubber sealing ring. The auxiliary pull ring is installed on the upper end of the box cover, an observation window is provided in the middle end of the box cover, and a rubber sealing ring is added to the outer side of the lower end of the box cover.

[0011] Furthermore, the sealing assembly also includes a limiting docking groove, a heating wire and an asbestos insulation layer. A limiting docking groove is opened at the upper end of the main box body, and a heating wire is arranged inside the main box body, and an asbestos insulation layer is arranged outside the heating wire.

[0012] Furthermore, the outer side of the box cover is horizontally distributed with the outer side of the main box body, and the box cover is rotatably connected to the main box body through a hinge.

[0013] Furthermore, the outer dimensions of the rubber sealing ring are adapted to the inner dimensions of the position-limiting docking groove, and the rubber sealing ring is connected to the main box body through the position-limiting docking groove.

[0014] The utility model provides a spring stress relaxation test device, which has the following beneficial effects:

[0015] 1. Through the setting of the test assembly, the utility model can, when the spring stress relaxation test device is used, drive the screw to rotate through the operation of the servo motor, so that the movable slider connected to the outside of the screw slides left and right inside the main box. The limit rod is used in conjunction with the limit through hole to improve the stability of the movable slider during the movement. One end of the spring to be tested is connected to the first limit hook, and the other end is connected to the second limit hook. The movement of the movable slider drives the spring to perform a stress relaxation test, thereby detecting the relaxation performance of the spring, thereby improving the convenience and practicality of the test device during use.

[0016] 2. The utility model, through the setting of the sealing component, can limit the box cover and install it on the upper end of the main box body through the hinge when the spring stress relaxation test device is in use, and cooperate with the auxiliary pull ring to improve the convenience of opening and closing the box cover. At the same time, the observation window set at the middle end of the box cover is used to observe the test process of the spring inside the main box body. The rubber sealing ring is used in conjunction with the limiting docking groove to improve the sealing of the box cover after closing, thereby avoiding rapid heat loss. The temperature inside the main box body is increased by the heating wire installed inside the main box body, thereby heating the spring, and cooperates with the asbestos insulation layer to avoid rapid heat loss, thereby improving the overall practicality and use efficiency of the spring stress relaxation test device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a spring stress relaxation test device of the present invention;

[0018] Figure 2 This is a schematic diagram of a three-dimensional cross-sectional structure of a test assembly of a spring stress relaxation test device of the present invention;

[0019] Figure 3 This is a schematic diagram of the three-dimensional unfolding structure of a sealing component of a spring stress relaxation test device of the present invention.

[0020] In the figure: 1. Main box body; 2. Support column foot; 3. Test assembly; 301. Servo motor; 302. Screw rod; 303. Movable slider; 304. First limit hook; 305. Limit through hole; 306. Limit rod; 307. Second limit hook; 4. Sealing assembly; 401. Box cover; 402. Auxiliary pull ring; 403. Observation window; 404. Rubber sealing ring; 405. Limit docking groove; 406. Heating wire; 407. Asbestos insulation layer. DETAILED DESCRIPTION

[0021] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] like Figure 1 and Figure 2As shown, a spring stress relaxation test device includes a main box 1 and a test assembly 3. A support column 2 is installed at the bottom of the main box 1. The test assembly 3 is arranged inside the main box 1, and the test assembly 3 includes a servo motor 301, a screw rod 302, a movable slider 303, a first limit hook 304, a limit through hole 305, a limit rod 306 and a second limit hook 307. The front end of the servo motor 301 is connected to the screw rod 302, and the outside of the screw rod 302 is connected to the movable slider 303, and the upper end of the inner side of the movable slider 303 is installed. There is a first limiting hook 304, and limiting through holes 305 are provided on both sides of the movable slider 303. The limiting through holes 305 are connected to the limiting rod 306. A second limiting hook 307 is installed on the right side of the main box body 1. The external size of the movable slider 303 is adapted to the internal size of the main box body 1, and the movable slider 303 is slidably connected to the main box body 1 through the screw rod 302. The internal size of the limiting through hole 305 is adapted to the external size of the limiting rod 306, and the limiting rod 306 is embedded in the movable slider 303 through the limiting through hole 305. The servo motor 301 is fixed to the left end of the main box body 1 by fastening bolts. The output shaft of the servo motor 301 is connected to the screw rod 302 through a coupling. The operation of the servo motor 301 drives the screw rod 302 to rotate, so that the movable slider 303 is connected to the outside of the screw rod 302 and slides left and right inside the main box body 1, and the limit rod 306 is fixed to the left end of the main box body 1 by fastening bolts. The positioning through hole 305 is installed into the movable slider 303, and the limiting rod 306 is used to cooperate with the limiting through hole 305 to improve the stability of the movable slider 303 during movement, thereby avoiding position deviation of the movable slider 303 during movement. One end of the spring to be tested is connected to the first limiting hook 304, and the other end is connected to the second limiting hook 307. The movement of the movable slider 303 drives the spring to perform a stress relaxation test, thereby testing the relaxation performance of the spring, thereby improving the convenience and practicality of the test device during use.

[0023] like Figures 1 to 3As shown, a sealing assembly 4 is provided at the upper end of the main box body 1, and the sealing assembly 4 includes a box cover 401, an auxiliary pull ring 402, an observation window 403 and a rubber sealing ring 404. An auxiliary pull ring 402 is installed on the upper end of the box cover 401, and an observation window 403 is provided at the middle end of the box cover 401, and a rubber sealing ring 404 is added to the outer side of the lower end of the box cover 401. The sealing assembly 4 also includes a limiting docking groove 405, a heating wire 406 and an asbestos insulation layer 407. A limiting docking groove 405 is provided at the upper end of the interior of the main box body 1, and a heating wire 406 is provided inside the main box body 1, and an asbestos insulation layer 407 is provided outside the heating wire 406. The outer side of the box cover 401 is horizontally distributed with the outer side of the main box body 1, and the box cover 401 is rotatably connected to the main box body 1 through a hinge. The outer size of the rubber sealing ring 404 is adapted to the inner size of the limiting docking groove 405, and the rubber sealing ring 404 is positioned through the limiting docking groove 405. It is connected to the main box body 1, and the box cover 401 is limitedly installed on the upper end of the main box body 1 through a hinge, and cooperates with the auxiliary pull ring 402 to improve the convenience of opening and closing the box cover 401. At the same time, the observation window 403 set at the middle end of the box cover 401 is used to observe the test process of the spring inside the main box body 1, and the rubber sealing ring 404 is fixedly installed at the lower end of the box cover 401. At the same time, the internal size of the limiting docking groove 405 opened at the upper end of the main box body 1 is adapted to the external size of the rubber sealing ring 404, so that the rubber sealing ring 404 is combined with the limiting docking groove 405 to improve the sealing of the box cover 401 after closing, thereby avoiding the rapid loss of heat, and the temperature inside the main box body 1 is increased by the heating wire 406 installed inside the main box body 1, thereby heating the spring, and cooperating with the asbestos insulation layer 407 to avoid the rapid loss of heat, thereby improving the overall practicality and use efficiency of the spring stress relaxation test device.

[0024] In summary, when the spring stress relaxation test device is used, the support column foot 2 installed at the bottom of the main box body 1 is first used to increase the stability of the device during use, and the servo motor 301 is used to drive the screw rod 302 to rotate, so that the movable slider 303 connected to the outside of the screw rod 302 slides left and right inside the main box body 1, and the limit rod 306 is used to cooperate with the limit through hole 305 to improve the stability of the movable slider 303 during movement. One end of the spring to be tested is connected to the first limit hook 304, and the other end is connected to the second limit hook 307. The movement of the movable slider 303 is controlled by the limit rod 306. The spring is driven to undergo a stress relaxation test, thereby detecting the relaxation performance of the spring. Then, the box cover 401 is limitedly installed on the upper end of the main box body 1 through the hinge. At the same time, the rubber sealing ring 404 is used in conjunction with the limiting docking groove 405 to improve the sealing of the box cover 401 after closing, thereby avoiding rapid heat loss. The heating wire 406 installed inside the main box body 1 is used to increase the temperature inside the main box body 1, thereby heating the spring, and cooperating with the asbestos insulation layer 407 to avoid rapid heat loss, thereby improving the overall practicality and use efficiency of the spring stress relaxation test device.

[0025] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A spring stress relaxation test device, comprising a main housing (1) and a test assembly (3), characterized in that: The main box (1) is provided with a supporting column foot (2) at the bottom, and a test assembly (3) is provided inside the main box (1), and the test assembly (3) comprises a servo motor (301), a screw rod (302), a movable slider (303), a first limiting hook (304), a limiting through hole (305), a limiting rod (306) and a second limiting hook (307). The front end of the servo motor (301) is connected to the screw rod (302), and the movable slider (303) is connected to the outside of the screw rod (302), and the first limiting hook (304) is installed on the upper end of the inner side of the movable slider (303). At the same time, limiting through holes (305) are provided on both sides of the inside of the movable slider (303), and the limiting through holes (305) are connected to the limiting rod (306). The second limiting hook (307) is installed on the right side of the inside of the main box (1), and a sealing assembly (4) is provided on the upper end of the main box (1).

2. A spring stress relaxation test device according to claim 1, characterized in that: The external dimensions of the movable slider (303) are adapted to the internal dimensions of the main box (1), and the movable slider (303) is slidably connected to the main box (1) via a screw rod (302).

3. A spring stress relaxation test device according to claim 1, characterized in that: The inner dimensions of the limiting through hole (305) are adapted to the outer dimensions of the limiting rod (306), and the limiting rod (306) is embeddedly connected to the movable slider (303) through the limiting through hole (305).

4. A spring stress relaxation test device according to claim 1, characterized in that: There are two limit rods (306), and the two limit rods (306) are symmetrically arranged on both sides of the movable slider (303) with respect to the front center axis of the movable slider (303).

5. A spring stress relaxation test device according to claim 1, characterized in that: The sealing assembly (4) comprises a box cover (401), an auxiliary pull ring (402), an observation window (403) and a rubber sealing ring (404); the auxiliary pull ring (402) is installed on the upper end of the box cover (401), the observation window (403) is provided at the middle end of the box cover (401), and the rubber sealing ring (404) is additionally provided on the outer side of the lower end of the box cover (401).

6. A spring stress relaxation test device according to claim 5, characterized in that: The sealing assembly (4) further comprises a limiting docking groove (405), a heating wire (406) and an asbestos insulation layer (407); the limiting docking groove (405) is provided at the upper end of the interior of the main box (1), the heating wire (406) is provided inside the main box (1), and the asbestos insulation layer (407) is provided outside the heating wire (406).

7. A spring stress relaxation test device according to claim 6, characterized in that: The outer side of the box cover (401) is horizontally distributed with the outer side of the main box body (1), and the box cover (401) is rotatably connected to the main box body (1) via a hinge.

8. A spring stress relaxation test device according to claim 6, characterized in that: The outer dimensions of the rubber sealing ring (404) are adapted to the inner dimensions of the position-limiting docking groove (405), and the rubber sealing ring (404) is connected to the main box (1) via the position-limiting docking groove (405).

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