A bolt loosening detection device

Abstract

The utility model discloses a kind of bolt anti-loose detection devices, it is related to bolt loosening detection technical field.The utility model includes test stand, and mobile plate is slidably and elastically cooperated in test stand;Two test devices, test device includes test plate and rotation control mechanism, test plate is slidably cooperated in test stand, both sides of test plate are equipped with positioning piece, and two positioning pieces are cooperated with a rotation control mechanism.The utility model is positioned by the setting of locating block, can be connected between locating block and test stand by rotation control mechanism control, to facilitate the adjustment of test plate position in test stand, to adapt to the test of bolt of different length, and improve the stability when test plate is used, and under the setting of rotation control mechanism, it can be conveniently adjusted for test plate in a variety of positions in test stand by staff, to improve the operability of the bolt anti-loose detection device when testing bolt of different length.

Description

Technical Field

[0001] This utility model belongs to the field of bolt loosening detection technology, specifically, it relates to a bolt anti-loosening detection device. Background Technology

[0002] Bolt: A cylindrical threaded fastener used with a nut in mechanical parts. It consists of a head and a threaded shank, and is used to fasten two parts with through holes. This type of connection is called a bolted connection. Since the two parts can be separated by unscrewing the nut, a bolted connection is a detachable connection. During use, vibration can cause the bolt and nut to loosen, leading to insecure fastening and potential safety hazards. Therefore, it is necessary to periodically check the tightness of bolts, requiring the use of testing equipment.

[0003] Chinese Patent No. CN222212236U discloses a bolt anti-loosening detection device, including a top plate, a bottom plate installed on the outer wall of the top plate, a bolt body movably sleeved within the inner cavity of the top plate, a nut threaded onto the outer wall of the bolt body, and a right side plate installed on the outer wall of the bottom plate. This bolt anti-loosening detection device, through the placement of the left and right side plates, installs them below the bottom plate during bolt installation. By contacting the outer wall of the movable plate with the outer wall of the bolt, the movable plate can fit snugly against the outer wall of the bolt under the action of a tension spring. If loosening occurs between the bolt and the nut during use, the bolt will be pushed upwards by the movable plate and the tension spring, triggering a pressure switch. This allows for immediate detection and intervention when the bolt becomes loose.

[0004] The aforementioned device, using a movable plate and a pressure switch, can detect loose bolts. However, when testing bolts of different lengths, it requires a pull rod and spring to adjust the position of the movable plate in conjunction with the pressure plate. While this method allows for quick adjustment of the movable plate, the bolts are subject to vibration during actual testing. In such cases, the device may loosen due to vibration, potentially affecting the final bolt testing results or causing the pressure switch to trip prematurely due to the movement of the movable plate. Existing technologies also use set screws for fixing, which is effective, but requires tools to remove and install the screws each time different bolt lengths are tested, making it cumbersome in practical use. In view of this, this utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a bolt anti-loosening detection device, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows: A bolt loosening detection device, comprising: The test fixture has a sliding and elastically fitted movable plate inside. Two testing devices are provided. Each testing device includes a test plate and a rotation control mechanism. The test plate is slidably fitted inside the test frame. Positioning components are installed on both sides of the test plate. The two positioning components cooperate with a rotation control mechanism. The positioning component includes a positioning frame, a turntable rotatably fitted inside the positioning frame, positioning blocks slidably fitted on both sides of the positioning frame, connecting rods rotatably fitted between both ends of the turntable and the two positioning blocks, and a rotation control mechanism cooperating with the turntable.

[0007] Optionally, the test frame includes a mounting plate, a base plate, and two side plates. The base plate is installed on the underside of the mounting plate, and the two side plates are installed on the bottom sides of the two base plates. Both the mounting plate and the base plate have mounting holes. The side plates have two positioning slots and one through slot, which are interconnected. The test plate slides in the through slot, and the positioning frame slides in the positioning slot. The inner walls of the positioning slots are provided with retaining strips on both sides, which cooperate with positioning blocks. The opposite inner sides of the two side plates are provided with two sliding grooves, in which sliding blocks are elastically fitted and connected to the moving plate.

[0008] Optionally, a pressure switch is provided on the lower side of the test plate, which works in conjunction with the moving plate.

[0009] Optionally, a rotating rod is fixed on the turntable, extending to the outside of the positioning frame. A limiting groove is provided on one side of the rotating rod. The rotation control mechanism includes a control component, which is slidably fitted in one of the positioning grooves. A limiting rod is rotatably fitted on one side of the control component, and the limiting rod is slidably fitted in the limiting groove. The control component includes a control frame, which has a control groove. A pawl toothed ring is provided on the inner wall of the control groove. A control rod is rotatably fitted in the control groove. A pawl is rotatably fitted on the control rod via a torsion spring. The control rod is connected to the limiting rod.

[0010] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time: The positioning block, through a rotating control mechanism, allows for easy adjustment of the test plate's position within the test frame. This enables the testing of bolts of varying lengths and improves the stability of the test plate during use. Furthermore, the rotating control mechanism facilitates adjustments to the test plate's position within the test frame, enhancing the operability of the bolt loosening detection device when testing bolts of different lengths.

[0011] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0012] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the test fixture; Figure 2 This is a schematic diagram of the internal structure of the side panel; Figure 3 for Figure 2 Schematic diagram of the structure at point A in the middle; Figure 4 This is a schematic diagram of the control box structure; Figure 5 This is a schematic diagram of the rotation control mechanism. Figure 6 for Figure 5 Schematic diagram of the structure at point B.

[0013] The attached diagram lists the components represented by each number as follows: Test frame 1, movable plate 101, mounting plate 102, base plate 103, side plate 104, slide 105, movable block 106, through groove 107, positioning groove 108, locking strip 109; Test device 2, test plate 201, pressure switch 202; Rotation control mechanism 3, limit rod 301; Positioning component 4, positioning frame 401, turntable 402, positioning block 403, connecting rod 404, rotating rod 405, limiting groove 406; Control component 5, control frame 501, control slot 502, pawl ring 503, control lever 504, pawl 505.

[0014] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings.

[0016] Please see Figure 1-6 As shown, this embodiment provides a bolt loosening detection device, including... Test fixture 1, with a sliding and elastically fitted movable plate 101 inside the test fixture 1; Two testing devices 2, each testing device 2 includes a testing plate 201 and a rotation control mechanism 3. The testing plate 201 is slidably fitted inside the testing frame 1. Positioning parts 4 are installed on both sides of the testing plate 201. The two positioning parts 4 cooperate with one rotation control mechanism 3. The positioning component 4 includes a positioning frame 401, a turntable 402 rotatably fitted inside the positioning frame 401, positioning blocks 403 slidably fitted on both sides of the positioning frame 401, connecting rods 404 rotatably fitted between both ends of the turntable 402 and the two positioning blocks 403, and a rotation control mechanism 3 cooperating with the turntable 402.

[0017] When the bolt needs to be tested, first install the bolt on the test frame 1 and tighten the bolt on the test frame 1 with the nut. During the bolt installation process, one end of the bolt will drive the moving plate 101 to move first. After the bolt is positioned, the moving plate 101 will abut against one end of the bolt. After the bolts are installed, the rotary control mechanism 3 drives the turntable 402 to rotate. During the rotation, the turntable 402 drives the positioning blocks 403 on both sides of the positioning frame 401 to retract into the positioning frame 401 through the two connecting rods 404. Then, the rotary control mechanism 3 can drive the two positioning frames 401 and the test plate 201 to move within the test frame 1. When the test plate 201 moves above the moving plate 101, the rotary control mechanism 3 can be used to control the turntable 402 to rotate in the opposite direction, thereby repeating the above steps in reverse, so that the positioning blocks 403 are reset and positioned within the test frame 1. When it is necessary to test bolts of different lengths, it is only necessary to use the rotary control mechanism 3 to complete the test of bolts of different lengths. This not only facilitates the testing of bolts of different lengths, but also improves the stability of the bolt loosening detection device after the test plate 201 is adjusted when testing bolts of different lengths, further improving the stability of the bolt loosening detection device during testing.

[0018] The positioning block 403 can be positioned and engaged with the test frame 1 by the rotation control mechanism 3, which facilitates the adjustment of the position of the test plate 201 within the test frame 1. This allows the test plate to be used for bolts of different lengths and improves its stability. The rotation control mechanism 3 also allows operators to easily adjust the position of the test plate 201 within the test frame 1, thus improving the operability of the bolt loosening detection device when testing bolts of different lengths.

[0019] The test frame 1 in this embodiment includes a mounting plate 102, a base plate 103, and two side plates 104. The base plate 103 is installed on the lower side of the mounting plate 102, and the two side plates 104 are installed on the bottom sides of the two base plates 103. The mounting plate 102 and the base plate 103 are provided with mounting holes. The side plates 104 in this embodiment are provided with two positioning grooves 108 and one through groove 107. The two positioning grooves 108 and the one through groove 107 are interconnected. The test plate 201 is slidably fitted in the through groove 107, and the positioning frame 401 is slidably fitted in the positioning groove 108. The inner walls of the positioning grooves 108 in this embodiment are provided with locking strips 109 on both sides, and the locking strips 109 cooperate with the positioning blocks 403. The two side plates 104 in this embodiment are provided with two sliding grooves 105 on their opposite inner sides. The sliding grooves 105 are slidably fitted with moving blocks 106, and the moving blocks 106 are connected to the moving plate 101. The mounting holes facilitate the passage of bolts used during testing, making it easy to position the bolts during testing. The two side plates 104 are connected to the base plate 103 by a fixing mechanism. This fixing mechanism can be in the form of a snap-fit ​​or pin, as is common in the prior art. The side plates 103 can be disassembled during bolt testing to facilitate positioning of the bolts before testing. Other fixing methods are also possible, as long as they do not affect the normal use of the structure. With the setting of the locking strip 109, when the rotation control mechanism 3 controls the test plate 201 to move in the through groove 105, and it is necessary to position the test plate 201, the positioning block 403 can be engaged with the locking strip 109, which can improve the stability of the test plate 201 during testing.

[0020] In this embodiment, a pressure switch 202 is provided on the lower side of the test plate 201, and the pressure switch 202 cooperates with the moving plate 101. Specifically, an elastic telescopic rod is installed in the slide groove 105. When the bolt becomes loose, the moving plate 101 will be displaced by the elastic force of the telescopic rod due to the pressure switch 202. When the moving plate 101 moves, it will press the trigger end of the pressure switch 202, thereby achieving the function of detecting that the bolt is loose.

[0021] In this embodiment, a rotating rod 405 is fixed on the turntable 402. The rotating rod 405 extends to the outside of the positioning frame 401. A limiting groove 406 is provided on one side of the rotating rod 405. The rotation control mechanism 3 includes a control member 5. The control member 5 is slidably fitted in one of the positioning grooves 108. A limiting rod 301 is rotatably fitted on one side of the control member 5. The limiting rod 301 is slidably fitted in the limiting groove 406. In this embodiment, a control groove 502 is provided in the control frame 501. A pawl toothed ring 503 is provided on the circumferential side of the inner wall of the control groove 502. A control rod 504 is rotatably fitted in the control groove 502. A pawl 505 is rotatably fitted on the control rod 504 through a torsion spring. The control rod 504 is connected to the limiting rod 301. By using the control lever 504, when the position of the test plate 201 needs to be adjusted according to the length of different bolts, the control lever 504 can be rotated first. During the rotation of the control lever 504, the pawl 505 on the control lever 504 itself will move towards the center of the control lever 504 under the action of the torsion spring, thereby driving the limit lever 301 and the turntable 402 on the rotating rod 405 to rotate, which in turn allows the locking strip 109 to separate from the positioning block 403, making it easier to adjust the position of the test plate 201 and improving the operability of the test plate 201 during testing. After the position of the test plate 201 is adjusted, when it is necessary to position the test plate 201, simply pull the control lever 504 to separate the pawl 505 and the pawl tooth ring 503 on the control lever 504. Then rotate the control lever 504 in the opposite direction so that the positioning block 403 can repeat the above steps in the reverse direction and re-insert the positioning block 403 into the retaining strip 109. This completes the positioning of the test plate 201 at different positions, which is convenient for testing bolts of different lengths.

[0022] It should be noted that all electrical devices involved in this application can be powered by batteries or external power sources.

[0023] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A bolt loosening detection device, characterized in that, include: Test frame (1), with a sliding plate (101) inside the test frame (1) that is elastically fitted. Two testing devices (2) are provided. The testing device (2) includes a test plate (201) and a rotation control mechanism (3). The test plate (201) is slidably fitted in the test frame (1). Positioning parts (4) are installed on both sides of the test plate (201). The two positioning parts (4) cooperate with a rotation control mechanism (3). The positioning component (4) includes a positioning frame (401), a turntable (402) is rotatably fitted inside the positioning frame (401), positioning blocks (403) are slidably fitted on both sides of the positioning frame (401), and connecting rods (404) are rotatably fitted between the two ends of the turntable (402) and the two positioning blocks (403). The rotation control mechanism (3) is in cooperation with the turntable (402).

2. The bolt loosening detection device according to claim 1, characterized in that, The test frame (1) includes a mounting plate (102), a base plate (103) and two side plates (104). The base plate (103) is installed on the underside of the mounting plate (102), and the two side plates (104) are installed on the bottom sides of the two base plates (103). Mounting holes are provided on both the mounting plate (102) and the base plate (103).

3. The bolt loosening detection device according to claim 2, characterized in that, The side plate (104) is provided with two positioning grooves (108) and one through groove (107). The two positioning grooves (108) and one through groove (107) are connected to each other. The test plate (201) is slidably fitted in the through groove (107), and the positioning frame (401) is slidably fitted in the positioning groove (108).

4. The bolt loosening detection device according to claim 3, characterized in that, The inner walls of the positioning groove (108) are provided with locking strips (109) on both sides, and the locking strips (109) cooperate with the positioning block (403).

5. A bolt loosening detection device according to claim 2, characterized in that, Two sliding grooves (105) are provided on the inner sides of the two side plates (104). A movable block (106) slides and is elastically fitted in the sliding groove (105). The movable block (106) is connected to the movable plate (101).

6. The bolt loosening detection device according to claim 1, characterized in that, A pressure switch (202) is provided on the lower side of the test board (201), and the pressure switch (202) cooperates with the moving plate (101).

7. The bolt loosening detection device according to claim 3, characterized in that, A rotating rod (405) is fixed on the turntable (402). The rotating rod (405) extends to the outside of the positioning frame (401). A limiting groove (406) is provided on one side of the rotating rod (405). The rotation control mechanism (3) includes a control component (5). The control component (5) is slidably fitted in one of the positioning grooves (108). A limiting rod (301) is rotatably fitted on one side of the control component (5). The limiting rod (301) is slidably fitted in the limiting groove (406).

8. A bolt loosening detection device according to claim 7, characterized in that, The control component (5) includes a control frame (501), a control groove (502) is provided in the control frame (501), a pawl ring (503) is provided on the inner wall of the control groove (502), a control rod (504) is rotatably engaged in the control groove (502), a pawl (505) is rotatably engaged in the control rod (504) through a torsion spring, and the control rod (504) is connected to the limit rod (301).

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