A bolt loosening state detection device

Abstract

The utility model discloses a bolt loosening state detection device, the utility model relates to detection device technical field, its structure includes the mounting bracket, and the bottom fixedly connected with central processing unit of mounting bracket, and the front fixedly connected with display of central processing unit, and the inside of one side of mounting bracket is provided with adjusting mechanism, and the one side of adjusting mechanism is provided with bolt fixed establishment, and the one side of adjusting mechanism is provided with nut detection mechanism, and nut detection mechanism is located bolt fixed establishment's just below, and nut detection mechanism includes the outer ring, and the inside of outer ring is provided with the inner ring. This bolt loosening state detection device can detect different loosening conditions of bolts, avoid the situation that no loosening is detected at the time and then loosening occurs again in the later period, improve the detection effect of the device, and accurately distinguish the loosening degree of the bolt and prevent.

Description

Technical Field

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

[0002] During the operation of various equipment such as fans, bolts or screws often become loose due to continuous engine vibration and complex and ever-changing external environmental factors. These small fasteners may seem insignificant, but they play a crucial role. They are the important foundation for ensuring the stable connection and operation of various equipment components. However, once the problem of loose bolts or screws occurs in critical and important parts of the equipment, such as engine connections or transmission component connection points, it is like planting a hidden danger in a precision-operating machine. This is very likely to cause abnormal equipment operation, component damage, or even paralysis of the entire equipment system, resulting in serious safety accidents and posing a huge threat and loss to production safety, personnel lives, and property. Therefore, bolt loosening detection devices are needed to detect the loosening of bolts.

[0003] Existing bolt loosening detection devices can only detect whether the bolt and nut are loose. They cannot detect bolts that are not yet loose but have a tendency to loosen, thus failing to prevent bolt loosening and resulting in inaccurate detection results. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a bolt loosening state detection device, which solves the problem that it can only detect whether the bolt and nut are loose, but cannot detect bolts that are not yet loose but have a tendency to loosen, thus failing to achieve the purpose of preventing bolt loosening and resulting in inaccurate detection results.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a bolt loosening state detection device, comprising a mounting frame, a central processing unit fixedly connected to the bottom of the mounting frame, a display fixedly connected to the front of the central processing unit, an adjustment mechanism disposed inside one side of the mounting frame, a bolt fixing mechanism disposed on one side of the adjustment mechanism, and a nut detection mechanism disposed on one side of the adjustment mechanism, the nut detection mechanism being located directly below the bolt fixing mechanism, the nut detection mechanism comprising an outer ring, an inner ring sleeved inside the outer ring, a displacement sensor fixedly connected to the front of the outer ring, and a telescopic support rod fixedly connected to the bottom of the inner ring. The bottom end of the telescopic support rod is fixedly connected to a swivel ring. A power mechanism is provided between the swivel ring and the surface of the mounting bracket. In this invention, the adjustment mechanism is first used to adjust the vertical distance between the bolt and the nut. Then, the bolt head is fixed using the bolt fixing mechanism. Next, the nut is fixed using the nut detection mechanism. Then, the nut is tightened using the power mechanism. At the same time, the displacement sensor monitors whether there is relative rotation between the inner and outer rings. When the displacement sensor detects the moment the nut rotates, the pressure sensor transmits the force applied at the moment of rotation to the central processing unit. The central processing unit sends the pressure value and the loosening status to the display for viewing.

[0008] Preferably, the nut detection mechanism further includes a connecting groove, which is formed on the inner wall of the outer ring, and a connecting block is fixedly connected to the outer surface of the inner ring, the connecting block being slidably connected to the inside of the connecting groove.

[0009] Preferably, an electric telescopic rod is fixedly connected to both sides of the inner surface of the inner ring, a clamping block is fixedly connected to one end of the electric telescopic rod, and a pressure sensor is fixedly connected to the inner side of the clamping block.

[0010] In this invention, when fixing the nut, the nut is first placed inside the inner ring. Then, the central processing unit starts the electric telescopic rod to drive the clamping block to move until the clamping block is tightly fixed on both sides of the nut. After the nut is fixed, the power mechanism drives the rotating ring to rotate. The telescopic support rod on the rotating ring drives the inner ring to rotate. At the same time, the connecting block slides inside the connecting groove. The looseness between the bolt and the nut is detected by turning the nut.

[0011] Preferably, the power mechanism includes a receiving groove, which is formed on the surface of the mounting bracket. A retaining groove is formed on the inner side of the receiving groove, and a retaining ring is fixedly connected to the outer surface of the rotating ring. The retaining ring is slidably connected to the inside of the retaining groove.

[0012] Preferably, the power mechanism further includes a motor, which is fixedly connected inside the receiving groove. A gear is fixedly connected to the output end of the motor, and a toothed groove is formed on the inner surface of the rotating ring. The gear and the toothed groove are meshed together.

[0013] In this invention, when the power mechanism is working, the electric motor drives the gear to rotate. Since the retaining ring is stuck inside the retaining groove, the gear drives the rotating ring to rotate in the receiving groove through the tooth groove.

[0014] Preferably, the bolt fixing mechanism includes a fixing ring, with threaded rods threadedly connected to both sides of the fixing ring. One end of the threaded rod passes through the inner wall of the fixing ring and is rotatably connected to a fixing block, while the other end of the threaded rod passes through the outer wall of the fixing ring and is fixedly connected to a handle.

[0015] In this utility model, when fixing the head of the bolt by the bolt fixing mechanism, the head of the bolt is first placed inside the fixing ring. Then, the handle is turned to drive the threaded rod to move on the fixing ring, and the threaded rod drives the fixing block to move towards the surface of the bolt until the fixing block abuts against the surface of the bolt and is fixed.

[0016] Preferably, the adjustment mechanism includes a cavity, which is opened inside the mounting frame. One side of the mounting frame has a through hole, and there are two through holes. A bidirectional lead screw is rotatably connected inside the cavity. The top end of the bidirectional lead screw passes through the inner wall of the mounting frame and is fixedly connected to an adjustment handle.

[0017] Preferably, the surface of the bidirectional lead screw is engaged with a movable plate, and the number of movable plates is set to two. The two movable plates are symmetrically distributed with respect to the center pattern of the bidirectional lead screw. Guide rods are fixedly connected to both sides of the cavity, and the two movable plates are slidably connected to the surface of the guide rods.

[0018] Preferably, one side of each of the two movable plates is fixedly connected to a connecting plate, and the number of connecting plates is set to two. One end of each of the two connecting plates passes through two through holes and extends to the inner side of the mounting bracket. One end of the connecting plate on the top side is fixedly connected to the surface of the fixing ring, and one end of the connecting plate on the bottom side is fixedly connected to the surface of the outer ring.

[0019] In this invention, when the adjustment mechanism is used to adjust the distance between the bolt and nut, turning the adjustment handle drives the bidirectional lead screw to rotate. Due to the restriction of the guide rod, the bidirectional lead screw drives the two moving plates to move in opposite directions. At the same time, the connecting plate on one side of the moving plate passes through the through hole and drives the outer ring and the fixed ring to move in opposite directions respectively. This allows the distance between the fixed bolt and the nut to be adjusted to accommodate the detection of different distances between the bolt and the nut.

[0020] (III) Beneficial Effects

[0021] This utility model provides a device for detecting bolt loosening. It has the following advantages:

[0022] (i) The bolt loosening detection device can detect different degrees of looseness between the bolt and nut through the nut detection mechanism, and can detect the tendency of the nut to loosen. This can remind people in time to better prevent the bolt from loosening, tighten the bolt and nut in advance, and avoid the situation where the bolt is not loose at the time of detection but loosens again later. It is also accurate enough to distinguish the degree of bolt loosening and take preventive measures.

[0023] (ii) The bolt loosening detection device, through the setting of the adjustment mechanism, can adjust the distance between the fixed ring and the outer ring, thereby adjusting the distance between the fixed bolt and the nut structure to adapt to the detection of different distances between the bolt and the nut, improving the flexibility of the device during use. Through the setting of the bolt fixing mechanism, electric extension rod and clamping block, it can fix bolts and nuts of different diameters, thereby improving the practicality of the device. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the nut detection mechanism of this utility model;

[0026] Figure 3 This is a top sectional view of the outer ring of this utility model;

[0027] Figure 4 This is a schematic diagram of the power mechanism of this utility model;

[0028] Figure 5 This is a schematic diagram of the bolt fixing mechanism of this utility model;

[0029] Figure 6 This is a schematic diagram of the adjustment mechanism of this utility model.

[0030] In the diagram: 1. Mounting bracket; 2. Central processing unit; 3. Display; 4. Adjustment mechanism; 41. Cavity; 42. Through hole; 43. Two-way lead screw; 44. Adjustment handle; 45. Moving plate; 46. Guide rod; 47. Connecting plate; 5. Bolt fixing mechanism; 51. Fixing ring; 52. Threaded rod; 53. Fixing block; 54. Handle; 6. Nut detection mechanism; 61. Outer ring; 62. Inner ring; 63. Displacement sensor; 64. Telescopic support rod; 65. Rotary ring; 66. Power mechanism; 661. Receiving groove; 662. Slot; 663. Snap ring; 664. Motor; 665. Gear; 666. Gear groove; 67. Connecting groove; 68. Connecting block; 69. Electric telescopic rod; 610. Clamping block; 611. Pressure sensor. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] See Figures 1-6 This utility model provides a technical solution: a bolt loosening state detection device, the structure of which includes a mounting frame 1, a central processing unit 2 fixedly connected to the bottom of the mounting frame 1, a display 3 fixedly connected to the front of the central processing unit 2, an adjustment mechanism 4 inside one side of the mounting frame 1, a bolt fixing mechanism 5 on one side of the adjustment mechanism 4, and a nut detection mechanism 6 on one side of the adjustment mechanism 4, the nut detection mechanism 6 being located directly below the bolt fixing mechanism 5, the nut detection mechanism 6 including an outer ring 61, an inner ring 62 sleeved inside the outer ring 61, a displacement sensor 63 fixedly connected to the front of the outer ring 61, and a telescopic support rod 64 fixedly connected to the bottom of the inner ring 62, the bottom end of the telescopic support rod 64 being fixedly... A rotating ring 65 is fixedly connected, and a power mechanism 66 is provided between the rotating ring 65 and the surface of the mounting bracket 1. Specifically, firstly, the adjustment mechanism 4 adjusts the vertical distance between the bolt and the nut, then the bolt head is fixed by the bolt fixing mechanism 5, and then the nut is fixed by the nut detection mechanism 6. Then, the nut is tightened by the power mechanism 66. At the same time, the displacement sensor 63 monitors whether there is relative rotation between the inner ring 62 and the outer ring 61. When the displacement sensor 63 detects the moment the nut rotates, the pressure sensor 611 transmits the force applied at the moment of rotation to the central processing unit 2. The central processing unit 2 sends the pressure value and the loosening status to the display 3 for people to view.

[0033] The nut detection mechanism 6 also includes a connecting groove 67, which is formed on the inner wall of the outer ring 61. A connecting block 68 is fixedly connected to the outer surface of the inner ring 62, and the connecting block 68 is slidably connected to the inside of the connecting groove 67.

[0034] Among them, electric telescopic rods 69 are fixedly connected to both sides of the inner surface of the inner ring 62, and a pressing block 610 is fixedly connected to one end of the electric telescopic rod 69. A pressure sensor 611 is fixedly connected to the inner side of the pressing block 610.

[0035] Specifically, when fixing the nut, first place the nut inside the inner ring 62, then start the electric telescopic rod 69 through the central processing unit 2 to drive the clamping block 610 to move until the clamping block 610 is tightly fixed on both sides of the nut. After fixing the nut, the power mechanism 66 drives the rotating ring 65 to rotate, and the telescopic support rod 64 on the rotating ring 65 drives the inner ring 62 to rotate. At the same time, the connecting block 68 slides inside the connecting groove 67. The looseness between the bolt and the nut is detected by turning the nut.

[0036] The power mechanism 66 includes a receiving groove 661, which is formed on the surface of the mounting bracket 1. A slot 662 is formed on the inner side of the receiving groove 661. A retaining ring 663 is fixedly connected to the outer surface of the rotating ring 65 and is slidably connected to the inside of the slot 662.

[0037] The power mechanism 66 also includes a motor 664, which is fixedly connected to the inside of the receiving groove 661. A gear 665 is fixedly connected to the output end of the motor 664. A toothed groove 666 is opened on the inner surface of the rotating ring 65, and the gear 665 and the toothed groove 666 are meshed together.

[0038] Specifically, when the power mechanism 66 is working, the electric motor drives the gear 665 to rotate. Since the retaining ring 663 is stuck inside the retaining groove 662, the gear 665 drives the rotating ring 65 to rotate in the receiving groove 661 through the tooth groove 666.

[0039] The bolt fixing mechanism 5 includes a fixing ring 51, with threaded rods 52 threadedly connected to both sides of the fixing ring 51. One end of the threaded rod 52 passes through the inner wall of the fixing ring 51 and is rotatably connected to a fixing block 53. The other end of the threaded rod 52 passes through the outer wall of the fixing ring 51 and is fixedly connected to a handle 54.

[0040] Specifically, when fixing the bolt head using the bolt fixing mechanism 5, the bolt head is first placed inside the fixing ring 51. Then, the handle 54 is turned to move the threaded rod 52 on the fixing ring 51, and the threaded rod 52 moves the fixing block 53 toward the surface of the bolt until the fixing block 53 abuts against the surface of the bolt and is fixed.

[0041] The adjustment mechanism 4 includes a cavity 41, which is located inside the mounting frame 1. A through hole 42 is provided on one side of the mounting frame 1. There are two through holes 42. A bidirectional lead screw 43 is rotatably connected inside the cavity 41. The top end of the bidirectional lead screw 43 passes through the inner wall of the mounting frame 1 and is fixedly connected to an adjustment handle 44.

[0042] Among them, the surface of the bidirectional lead screw 43 is meshed with a movable plate 45, and the number of movable plates 45 is set to two. The two movable plates 45 are symmetrically distributed with respect to the center pattern of the bidirectional lead screw 43. The two sides of the cavity 41 are fixedly connected to guide rods 46, and the two movable plates 45 are slidably connected to the surface of the guide rods 46.

[0043] Each of the two movable plates 45 is fixedly connected to one side of a connecting plate 47. The number of connecting plates 47 is set to two. One end of each connecting plate 47 passes through two through holes 42 and extends to the inner side of the mounting bracket 1. One end of the top connecting plate 47 is fixedly connected to the surface of the fixing ring 51, and one end of the bottom connecting plate 47 is fixedly connected to the surface of the outer ring 61.

[0044] Specifically, when adjusting the distance between the bolt and nut using the adjusting mechanism 4, turning the adjusting handle 44 drives the bidirectional lead screw 43 to rotate. Due to the restriction of the guide rod 46, the bidirectional lead screw 43 drives the two moving plates 45 to move in opposite directions. At the same time, the connecting plate 47 on one side of the moving plate 45 passes through the through hole 42 and drives the outer ring 61 and the fixed ring 51 to move in opposite directions, thereby adjusting the distance between the fixed bolt and nut structure to adapt to the detection of different distances between the bolt and nut.

[0045] Working principle: When detecting the looseness of bolts, the distance between the fixing ring 51 and the outer ring 61 is first roughly adjusted by the adjusting mechanism 4 based on the distance between the bolt and the nut. Then, the bolt head is fixed by the fixing block 53 in the bolt fixing mechanism 5. Next, the nut is fixed by the clamping block 610 in the nut detection mechanism 6. Then, the motor 664 is started to drive the gear 665 to rotate. The gear 665 drives the rotating ring 65 to rotate through the tooth groove 666. The rotating ring 65 drives the inner ring 62 to rotate through the telescopic support rod 64. The inner ring 62 is subjected to force before rotation, and the pressure sensor 611 monitors the received force. The displacement sensor 63 monitors whether there is a relative displacement between the inner ring 62 and the outer ring 61. The displacement sensor 63 detects the relative displacement between the inner ring 62 and the outer ring 61. At the moment of movement, the force received by the pressure sensor 611 is transmitted to the central processing unit 2. The central processing unit 2 then sends the force and the determined looseness status to the display 3 for viewing. If the bolt and nut are already loose, the force received by the pressure sensor 611 remains basically unchanged, indicating that the bolt and nut are loose. If the bolt and nut are very secure, the change in force received by the pressure sensor 611 exceeds the applied force, indicating that the bolt and nut are not loose. If the bolt and nut are about to loosen, the change in force received by the pressure sensor 611 is less than the applied force and greater than zero, indicating that the bolt and nut have a tendency to loosen. Thus, the threshold can be set as needed, and the central processing unit 2 judges the monitored pressure value, and then the detection results are displayed on the display 3 for viewing.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bolt loosening condition detection device, characterized in that, The device includes a mounting bracket (1), a central processing unit (2) is fixedly connected to the bottom of the mounting bracket (1), a display (3) is fixedly connected to the front of the central processing unit (2), an adjustment mechanism (4) is provided inside one side of the mounting bracket (1), a bolt fixing mechanism (5) is provided on one side of the adjustment mechanism (4), a nut detection mechanism (6) is provided on one side of the adjustment mechanism (4), the nut detection mechanism (6) is located directly below the bolt fixing mechanism (5), the nut detection mechanism (6) includes an outer ring (61), an inner ring (62) is sleeved inside the outer ring (61), a displacement sensor (63) is fixedly connected to the front of the outer ring (61), a telescopic support rod (64) is fixedly connected to the bottom of the inner ring (62), a rotating ring (65) is fixedly connected to the bottom end of the telescopic support rod (64), and a power mechanism (66) is provided between the rotating ring (65) and the surface of the mounting bracket (1).

2. The bolt loosening state detection device according to claim 1, characterized in that: The nut detection mechanism (6) also includes a connecting groove (67), which is opened on the inner wall of the outer ring (61). A connecting block (68) is fixedly connected to the outer surface of the inner ring (62), and the connecting block (68) is slidably connected to the inside of the connecting groove (67).

3. The bolt loosening state detection device according to claim 1, characterized in that: Electric telescopic rods (69) are fixedly connected to both sides of the inner surface of the inner ring (62). A pressing block (610) is fixedly connected to one end of the electric telescopic rod (69). A pressure sensor (611) is fixedly connected to the inner side of the pressing block (610).

4. The bolt loosening state detection device according to claim 1, characterized in that: The power mechanism (66) includes a receiving groove (661), which is opened on the surface of the mounting bracket (1). A slot (662) is opened on the inner side of the receiving groove (661). A retaining ring (663) is fixedly connected to the outer surface of the rotating ring (65). The retaining ring (663) is slidably connected to the inside of the slot (662).

5. The bolt loosening state detection device according to claim 4, characterized in that: The power mechanism (66) also includes a motor (664), which is fixedly connected to the inside of the receiving groove (661). A gear (665) is fixedly connected to the output end of the motor (664). A toothed groove (666) is provided on the inner surface of the rotating ring (65), and the gear (665) meshes with the toothed groove (666).

6. The bolt loosening state detection device according to claim 1, characterized in that: The bolt fixing mechanism (5) includes a fixing ring (51), with threaded rods (52) threadedly connected to both sides of the fixing ring (51). One end of the threaded rod (52) passes through the inner wall of the fixing ring (51) and is rotatably connected to a fixing block (53). The other end of the threaded rod (52) passes through the outer wall of the fixing ring (51) and is fixedly connected to a handle (54).

7. The bolt loosening state detection device according to claim 1, characterized in that: The adjustment mechanism (4) includes a cavity (41), which is located inside the mounting frame (1). A through hole (42) is provided on one side of the mounting frame (1). There are two through holes (42). A bidirectional lead screw (43) is rotatably connected inside the cavity (41). The top end of the bidirectional lead screw (43) passes through the inner wall of the mounting frame (1) and is fixedly connected to an adjustment handle (44).

8. The bolt loosening state detection device according to claim 7, characterized in that: The surface of the bidirectional lead screw (43) is meshed with a movable plate (45). The number of movable plates (45) is set to two. The two movable plates (45) are symmetrically distributed with respect to the center pattern of the bidirectional lead screw (43). Guide rods (46) are fixedly connected to both sides of the cavity (41). The two movable plates (45) are slidably connected to the surface of the guide rods (46).

9. A bolt loosening state detection device according to claim 8, characterized in that: One side of each of the two movable plates (45) is fixedly connected to a connecting plate (47). The number of connecting plates (47) is set to two. One end of each of the two connecting plates (47) passes through two through holes (42) and extends to the inner side of the mounting bracket (1). One end of the connecting plate (47) on the top side is fixedly connected to the surface of the fixing ring (51), and one end of the connecting plate (47) on the bottom side is fixedly connected to the surface of the outer ring (61).

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