A fastener elongation detection device

Abstract

This utility model discloses a fastener elongation detection device, which includes a fixed base. Two second fixed frames are symmetrically arranged on the upper end of the fixed base, and a first fixed frame is fixedly arranged on one side of each of the second fixed frames. Multiple guide posts are symmetrically fixedly arranged on the lower end of the fixed base, and fixed posts are arranged at the lower ends of the guide posts. With this structure, a motor is fixedly arranged on one side of the upper end of the second fixed frame, and a rotating shaft is fixedly connected to the lower end of the motor. A gear is fixedly connected to the lower end of the rotating shaft, and two racks are symmetrically meshed on the sidewalls of the gear. A clamping block is fixedly connected to one side of each rack, and a slider is fixedly connected to the lower end of each rack. A sliding groove is provided at the lower end of the slider, and the sliding groove is located on the upper end of the fixed base. The motor synchronously drives the two racks through the gear, causing the clamping blocks on both sides to move simultaneously, preventing slippage at the clamping points and ensuring stable measurement reference.

Description

Technical Field

[0001] This utility model relates to the technical field, and in particular to a fastener elongation detection device. Background Technology

[0002] Fastener elongation testing device is a specialized device used to measure the length change of fasteners such as bolts, nuts, and screws during the stress process. Its core function is to accurately capture the minute deformation of the fastener to evaluate its stress state, preload, material properties, or whether it meets design standards.

[0003] When using a fastener elongation detection device, the fastener may slip during clamping, which may cause the detection effect to be less than expected; the device may also vibrate during operation, which may cause the detection accuracy value to be less than expected. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a fastener elongation detection device, which solves the problem of fastener slippage during fastener detection and the problem of vibration affecting the detection results during fastener detection.

[0005] This utility model also provides a fastener elongation detection device as described above, including a fixed base, two second fixed frames symmetrically arranged on the upper end of the fixed base, a first fixed frame fixedly arranged on one side of the second fixed frames, a plurality of guide posts symmetrically fixedly arranged on the lower end of the fixed base, a fixed post arranged at the lower end of the guide posts, a fixed plate fixedly arranged at the lower end of the fixed posts, and two fastening screws symmetrically threaded to the upper end of the fixed plate.

[0006] According to the fastener elongation detection device of the present invention, a motor is fixedly installed on one side of the upper end of the second fixing frame, a rotating shaft is fixedly connected to the lower end of the motor, and a gear is fixedly connected to the lower end of the rotating shaft.

[0007] According to the present invention, a fastener elongation detection device is provided, wherein two racks are symmetrically meshed on the sidewalls of the gear, and a clamping block is fixedly connected to one side of each rack.

[0008] According to the fastener elongation detection device of the present invention, a second slider is fixedly provided at the lower end of the rack, the second slider is slidably disposed inside the slide groove, the slide groove is disposed at the upper end of the fixed base, and the rack is slidably disposed at the upper end of the fixed base.

[0009] According to the fastener elongation detection device of the present invention, an air pump is fixedly installed on one side of the upper end of the first fixing frame, an air pipe is connected to one side of the air pump, and an air nozzle is connected to one side of the lower end of the air pipe.

[0010] According to the present invention, a fastener elongation detection device is provided on one side of the jet nozzle, and the detection instrument is fixedly installed at the lower end of the first fixed frame.

[0011] According to the fastener elongation detection device of the present invention, a pressure plate is fixedly connected to the lower end of the guide post, and two first sliders are symmetrically fixed on both sides of the pressure plate, and the first sliders are slidably disposed on the side wall of the fixed post.

[0012] According to the fastener elongation detection device of the present invention, a damping spring is fixedly connected to the lower end of the pressure plate, and the damping spring is installed inside the fixed column.

[0013] Beneficial effects:

[0014] 1. The fastener elongation detection device of this technical solution has two second fixed frames symmetrically fixedly installed on the upper end of the fixed base. A motor is fixedly installed on one side of the upper end of the second fixed frame. A rotating shaft is fixedly connected to the lower end of the motor. A gear is fixedly connected to the lower end of the rotating shaft. Two racks are symmetrically meshed on the side wall of the gear. A clamping block is fixedly connected to one side of the rack. A slider is fixedly connected to the lower end of the rack. A sliding groove is provided at the lower end of the slider. The sliding groove is located on the upper end of the fixed base. The motor synchronously drives the two racks through the gear, so that the clamping blocks on both sides move simultaneously, avoiding slippage of the clamping parts and ensuring the stability of the measurement benchmark.

[0015] 2. Multiple guide posts are symmetrically fixed at the lower end of the fixed base. A fixed post is set at the lower end of the guide post. A fixed plate is fixedly connected to the lower end of the fixed post. Two fastening screws are symmetrically set at the upper end of the fixed plate. A pressure plate is fixedly connected to the lower end of the guide post. Two first sliders are symmetrically fixed on both sides of the pressure plate. A damping spring is fixedly set at the lower end of the pressure plate. Both the damping spring and the pressure plate are installed inside the fixed post. The second slider is slidably set on the side wall of the fixed post. The guide post is movably set at the upper end of the fixed post. When the device is working, it reduces the influence of bolt vibration on the measurement and makes the measurement more accurate. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a perspective view of a fastener elongation detection device according to the present invention;

[0018] Figure 2 This is a cross-sectional view of the shock-absorbing structure of a fastener elongation detection device according to the present invention;

[0019] Figure 3 This is a structural diagram of the first fixing frame of the fastener elongation detection device of this utility model;

[0020] Figure 4 This utility model relates to a fastener elongation detection device. Figure 1 Enlarged view of point A in the middle.

[0021] Legend:

[0022] 1. Fixed base; 2. Rack; 3. Clamping block; 4. First fixed frame; 5. Motor; 6. Second fixed frame; 7. Gear; 8. Rotating shaft; 9. Guide post; 10. Pressure plate; 11. First slider; 12. Damping spring; 13. Fixed post; 14. Fixed plate; 15. Fastening screw; 16. Air pump; 17. Air pipe; 18. Detection instrument; 19. Air nozzle; 20. Slide groove; 21. Second slider. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] Reference Figure 1-4 This utility model provides a fastener elongation detection device, which includes a fixed base 1. Two second fixed frames 6 are symmetrically arranged on the upper end of the fixed base 1. A first fixed frame 4 is fixedly arranged on one side of the second fixed frame 6. Multiple guide posts 9 are symmetrically fixedly arranged on the lower end of the fixed base 1. A fixed post 13 is arranged at the lower end of the guide post 9. A fixed plate 14 is fixedly arranged at the lower end of the fixed post 13. Two fastening screws 15 are symmetrically threaded to the upper end of the fixed plate 14.

[0025] Specifically, the fixed base 1 is the core basic component. Its main function is to provide rigid support, positioning reference and structural connection point for the entire device, so as to ensure that the functional components can be stably assembled and work together.

[0026] A motor 5 is fixedly installed on one side of the upper end of the second fixed frame 6, and a rotating shaft 8 is fixedly connected to the lower end of the motor 5. A gear 7 is fixedly connected to the lower end of the rotating shaft 8.

[0027] Specifically, the motor 5 drives the two racks 2 synchronously through the gear 7, so that the clamping blocks 3 on both sides move towards each other at the same time, ensuring that the fastener is subjected to symmetrical force on both sides.

[0028] The gear 7 has two racks 2 that are symmetrically meshed on its sidewalls, and a clamping block 3 is fixedly connected to one side of each rack 2.

[0029] Specifically, the clamping block 3 moves synchronously and is subjected to symmetrical forces. The clamping forces on the left and right sides of the clamped object are equal in magnitude, and there will be no situation where the object shifts or one side is pressed tightly while the other side is loose due to excessive force on one side.

[0030] A second slider 21 is fixedly installed at the lower end of the rack 2. The second slider 21 is slidably installed inside the slide groove 20. The slide groove 20 is installed at the upper end of the fixed base 1. The rack 2 is slidably installed at the upper end of the fixed base 1.

[0031] Specifically, the rack 2 is driven by the motor 5 to rotate the gear 7, so that the rack 2 slides on the upper end of the fixed seat 1 through the second slider 21 and the slide groove 20.

[0032] An air pump 16 is fixedly installed on one side of the upper end of the first fixed frame 4. An air pipe 17 is connected to one side of the air pump 16. An air nozzle 19 is connected to one side of the lower end of the air pipe 17.

[0033] Specifically, the air pump 16 cleans the surface of the testing instrument 18 through the air nozzle 19 to avoid measurement deviations caused by contamination.

[0034] A detection instrument 18 is provided on one side of the jet nozzle 19, and the detection instrument 18 is fixedly installed at the lower end of the first fixed frame 4.

[0035] Specifically, the testing instrument 18 is used to detect the elongation of the fastener.

[0036] A pressure plate 10 is fixedly connected to the lower end of the guide post 9. Two first sliders 11 are symmetrically fixed on both sides of the pressure plate 10. The first sliders 11 are slidably disposed on the side wall of the fixed post 13.

[0037] Specifically, if the vibration direction is downward, the guide post 9 will move downward relative to the fixed post 13 under the action of gravity or mechanical pressure from above.

[0038] A damping spring 12 is fixedly connected to the lower end of the pressure plate 10, and the damping spring 12 is installed inside the fixed column 13.

[0039] Specifically, when the vibration is transmitted upward to the fixed column 13, if the vibration direction is an upward impact, the fixed column 13 will move upward relative to the guide column 9, at which time the damping spring 12 is compressed by the pressure plate 10.

[0040] Working principle: The motor 5 drives the two racks 2 synchronously through the gear 7, causing the clamping blocks 3 on both sides to move towards each other simultaneously, ensuring that the fastener is subjected to symmetrical force on both sides. Because the clamping blocks 3 on both sides move synchronously and are subjected to symmetrical force, the clamping force on the clamped object is equal in magnitude, preventing the object from shifting or one side from being pressed tightly while the other side is loose due to excessive force on one side. This balanced clamping force increases the friction between the object and the clamping blocks 3, reducing relative slippage. When the external environment vibrates, if the vibration is transmitted upward to the fixed column 13, and the vibration direction is upward impact, the fixed column 13 will move upward relative to the guide column 9. At this time, the damping spring 12 is compressed by the pressure plate 10. If the vibration direction is downward vibration, the guide column 9 will move downward relative to the fixed column 13 under the action of gravity or the pressure of the upper mechanism, compressing the damping spring 12 again. During the compression or extension process, the damping spring 12 converts mechanical energy into the elastic potential energy of the spring through its own elastic deformation. At the same time, the damping characteristic of the spring consumes some energy, thereby weakening the transmission intensity of the vibration.

[0041] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A fastener elongation detection device, comprising a fixed base (1), characterized in that: Two second fixing frames (6) are symmetrically arranged on the upper end of the fixing base (1). A first fixing frame (4) is fixedly arranged on one side of the second fixing frame (6). Multiple guide posts (9) are symmetrically fixedly arranged on the lower end of the fixing base (1). A fixing post (13) is arranged at the lower end of the guide post (9). A fixing plate (14) is fixedly arranged at the lower end of the fixing post (13). Two fastening screws (15) are symmetrically threaded on the upper end of the fixing plate (14).

2. The fastener elongation detection device according to claim 1, characterized in that, A motor (5) is fixedly installed on one side of the upper end of the second fixed frame (6), and a rotating shaft (8) is fixedly connected to the lower end of the motor (5), and a gear (7) is fixedly connected to the lower end of the rotating shaft (8).

3. The fastener elongation detection device according to claim 2, characterized in that, The gear (7) has two racks (2) symmetrically meshing on its sidewalls, and a clamping block (3) is fixedly connected to one side of each rack (2).

4. The fastener elongation detection device according to claim 3, characterized in that, The lower end of the rack (2) is fixedly provided with a second slider (21), which is slidably disposed inside the slide groove (20). The slide groove (20) is disposed on the upper end of the fixed seat (1), and the rack (2) is slidably disposed on the upper end of the fixed seat (1).

5. The fastener elongation detection device according to claim 1, characterized in that, An air pump (16) is fixedly installed on one side of the upper end of the first fixed frame (4), and an air pipe (17) is connected to one side of the air pump (16), and an air nozzle (19) is connected to one side of the lower end of the air pipe (17).

6. The fastener elongation detection device according to claim 5, characterized in that, A detection instrument (18) is provided on one side of the jet nozzle (19), and the detection instrument (18) is fixedly installed at the lower end of the first fixing frame (4).

7. The fastener elongation detection device according to claim 1, characterized in that, The lower end of the guide post (9) is fixedly connected to a pressure plate (10), and two first sliders (11) are symmetrically fixed on both sides of the pressure plate (10). The first sliders (11) are slidably disposed on the side wall of the fixed post (13).

8. The fastener elongation detection device according to claim 7, characterized in that, A damping spring (12) is fixedly connected to the lower end of the pressure plate (10), and the damping spring (12) is installed inside the fixed column (13).

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