Handheld bolt looseness detection equipment

Abstract

The utility model relates to the technical field of bolt detection, in particular to handheld bolt looseness detection equipment. The device comprises a detection box, a test assembly and a fixing frame, one side of the detection box is of an opening structure, a fluted disc is rotationally arranged on the inner side of the detection box, a positioning groove matched with the cross section of a nut is formed in the fluted disc, and the test assembly is arranged on the side, close to the fluted disc, in the detection box and matched with the fluted disc to drive a test bolt to rotate; the inner side of the fixing frame is provided with a manual driving member used for driving the test assembly to operate. According to the utility model, the nut is limited in the fluted disc through the positioning groove, then the manual driving piece is utilized to apply a pushing force to the toothed plate engaged with the fluted disc, and the magnitude of the pushing force applied to the toothed plate can be observed in real time through the cooperation of the pressure sensor and the pressure display screen, so that the range of the rotating force applied to the nut in the detection process is ensured; and the accuracy of the detection result is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt detection, in particular to a handheld bolt loosening detection device. Background Art

[0002] Bolts play an important role as connectors and fasteners for many mechanical products and structures. Bolt connections under normal working conditions can reliably complete the load transfer between the connected structures, but as the service life increases, they will inevitably become loose. Therefore, in order to prevent accidents, it is necessary to use detection equipment to detect the loose state of the bolts.

[0003] A Chinese patent with authorization announcement number CN219474932U discloses a tower bolt loosening detection mechanism, which rotates a rotating rod to rotate a rotating column. Since the pawl prevents the ratchet from returning, the rotation of the rotating column causes the fixed sleeve to drive the bolt sleeve to rotate, allowing the staff to initially tighten the bolt through the bolt cap, and then reversely rotate the rotating column to a suitable angle to make the pawl rotate along the ratchet, and the torsion spring deforms and resets, and then continues to rotate counterclockwise to tighten the bolt for a second time, and repeats this cycle, making it convenient for the staff to detect and tighten the bolt.

[0004] However, the above-mentioned detection mechanism drives the bolt to rotate by rotating the rotating rod, and cannot ensure that the rotational force applied to the bolt is consistent each time, resulting in low accuracy of the detection result. Utility Model Content

[0005] In view of the problems existing in the background technology, a handheld bolt loosening detection device is proposed. The nut is limited in the toothed disc through the positioning groove, and then a manual driving member is used to apply a driving force to the toothed plate engaged with the toothed disc. The driving force applied to the toothed plate can be observed in real time through the cooperation of the pressure sensor and the pressure display screen, thereby ensuring the range of the rotational force applied to the nut during the detection process and improving the accuracy of the detection result.

[0006] The utility model provides a handheld bolt loosening detection device, comprising

[0007] A detection box having one side arranged as an open structure, a toothed disc rotatably arranged inside the detection box, and a positioning groove matching the cross section of the nut is opened on the toothed disc;

[0008] A test assembly is provided in the detection box and cooperates with the toothed disc to drive the test bolt to rotate; and

[0009] A fixing frame is arranged on one side of the detection box, and a manual driving member for driving the test assembly to run is arranged on the inner side of the fixing frame.

[0010] Preferably, the test assembly comprises

[0011] There are two groups of guide posts, on which tooth plates are slidably arranged, and the tooth plates are meshed and connected with the toothed discs;

[0012] A connecting block is arranged outside the tooth plate, one end of which passes through the detection box and is provided with a pressure sensor;

[0013] The pressure display screen is arranged at one end of the detection box and is controlled and connected with the pressure sensor.

[0014] Preferably, a reset spring is also sleeved on the guide column, one end of which is in contact with the tooth plate and is used to reset the tooth plate after displacement.

[0015] Preferably, the manual drive member includes a threaded rod, a pressure block and a turning handle. The threaded rod is rotatably arranged on the inner side of the fixing frame, one end of which passes through the fixing frame and is connected to the turning handle, and the middle part of the threaded rod is threadedly connected to the pressure block facing the pressure sensor.

[0016] Preferably, a slide groove for guiding the pressing block is provided on the inner side of the fixing frame, and a hand-held handle is provided on the outer side of the fixing frame.

[0017] Preferably, a strip-shaped through slot for the connecting block to pass through is provided on one side of the detection box close to the fixing frame, and the connecting block passes through the strip-shaped through slot and extends to the inner side of the fixing frame.

[0018] Through the above technical scheme, that is, the bolt loosening detection device disclosed in the utility model, the nut is limited in the toothed disc through the positioning groove, and then a manual driving part is used to apply a pushing force to the toothed plate meshing with the toothed disc. The toothed plate is displaced after being subjected to the force, and the nut is driven to rotate by the toothed disc, generating a rotational force on the nut, thereby detecting whether the bolt is loose. The size of the pushing force applied to the toothed plate can be observed in real time through the cooperation of the pressure sensor and the pressure display screen, thereby ensuring the range of the rotational force applied to the nut during the detection process and improving the accuracy of the detection result.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a handheld bolt loosening detection device of the utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the bottom structure;

[0022] Figure 3 for Figure 2 A local enlarged structural schematic diagram;

[0023] Figure 4 for Figure 2Schematic diagram of the side structure.

[0024] Figure numerals: 1. detection box; 2. toothed disc; 3. positioning groove; 4. guide column; 5. toothed plate; 6. connecting block; 7. pressure sensor; 8. pressure display screen; 9. reset spring; 10. threaded rod; 11. pressure block; 12. turning handle; 13. fixing frame; 14. slide groove; 15. hand handle; 16. strip through groove. DETAILED DESCRIPTION

[0025] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0026] Embodiment 1

[0027] like Figure 1-Figure 4 As shown, a handheld bolt loosening detection device proposed by the utility model includes a detection box 1, a test assembly and a fixing frame 13. One side of the detection box 1 is set as an open structure, and a toothed disc 2 is rotatably arranged on the inner side thereof. The toothed disc 2 is provided with a positioning groove 3 that matches the cross-section of the nut. A test assembly is arranged on the side of the detection box 1 close to the toothed disc 2, and the test assembly cooperates with the toothed disc 2 to drive the test bolt to rotate. A fixing frame 13 is arranged on the outer side of the detection box 1, and a manual driving part for driving the test assembly to run is arranged on the inner side of the fixing frame 13.

[0028] like Figure 2 and Figure 3 As shown, the test assembly includes a guide column 4, a pressure sensor 7 and a pressure display screen 8. Two groups of guide columns 4 are provided, and a tooth plate 5 is slidably provided between the two groups of guide columns 4. One side of the tooth plate 5 is meshed and connected with the toothed disc 2, and the other side of the tooth plate 5 is provided with a connecting block 6, on which the pressure sensor 7 is provided. A pressure display screen 8 is provided at one end of the detection box 1, which is control-connected to the pressure sensor 7 for real-time display of the pressure applied to the pressure sensor 7.

[0029] like Figure 2 As shown, a reset spring 9 is sleeved on the guide post 4, one end of which is in contact with the tooth plate 5, and is used to reset the tooth plate 5 after displacement.

[0030] like Figure 2 As shown, a strip-shaped through slot 16 for the connecting block 6 to pass through is provided on one side of the detection box 1 close to the fixing frame 13 , and the connecting block 6 passes through the strip-shaped through slot 16 and extends to the inner side of the fixing frame 13 .

[0031] Embodiment 2

[0032] like Figure 1-Figure 4As shown, the present invention proposes a handheld bolt loosening detection device. Based on the above embodiments, this embodiment further discloses in detail the specific components of the manual drive component and the connection method between the manual drive component and the fixing frame 13.

[0033] like Figure 2 As shown, the manual drive component includes a threaded rod 10, a pressure block 11 and a handle 12. The threaded rod 10 is rotatably arranged on the inner side of a fixed frame 13, one end of which passes through the fixed frame 13 and is connected to the handle 12, and the middle part of the threaded rod is threadedly connected to the pressure block 11 facing the pressure sensor 7.

[0034] like Figure 4 As shown, a slide groove 14 for guiding the pressure block 11 is provided on the inner side of the fixed frame 13, and a handle 15 is provided on the outer side of the fixed frame 13. The moving trajectory of the pressure block 11 is limited by the slide groove 14, and the whole detection equipment can be conveniently lifted by the handle 15.

[0035] In summary, when the utility model is in use, the bolt nut to be tested is inserted into the positioning groove 3, and then the turning handle 12 is turned. The turning handle 12 drives the threaded rod 10 to rotate. During the rotation of the threaded rod 10, the pressure block 11 gradually approaches the pressure sensor 7 under the limit of the slide groove 14 until it contacts it, and applies a thrust to the tooth plate 5 through the pressure sensor 7. The pressure sensor 7 senses the thrust and displays it through the pressure display screen 8, which is convenient for the tester to control the range of applied force. When the applied force has not reached the set maximum pressure, the tooth plate 5 starts to move, and drives the nut to rotate through the toothed disc 2, and rotates the nut to a certain angle, so that the bolt is loose. Under a certain force, when the tooth plate 5 does not move under the force, it proves that the bolt is not loose. The detection equipment as a whole can accurately control the measurement of the applied force, thereby improving the accuracy of the test results.

[0036] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A handheld bolt loosening detection device, It is characterized in that include A detection box (1) having one side arranged as an open structure, a toothed disc (2) rotatably arranged on the inner side thereof, and a positioning groove (3) matching the cross section of a nut is provided on the toothed disc (2); A test assembly is provided in the detection box (1), and cooperates with the toothed disc (2) to drive the test bolt to rotate; and A fixing frame (13) is provided on one side of the detection box (1), and a manual driving member for driving the test assembly to operate is provided on the inner side of the fixing frame (13).

2. A handheld bolt loosening detection device according to claim 1, It is characterized in that Test components include The guide pillars (4) are provided in two groups, and a tooth plate (5) is slidably provided on the guide pillars, and the tooth plate (5) is meshedly connected with the toothed disc (2); A connecting block (6) is arranged outside the tooth plate (5), one end of which passes through the detection box (1) and is provided with a pressure sensor (7); A pressure display screen (8) is arranged at one end of the detection box (1) and is controllably connected to the pressure sensor (7).

3. A handheld bolt loosening detection device according to claim 2, It is characterized in that A reset spring (9) is also sleeved on the guide post (4), one end of which is in contact with the tooth plate (5) and is used to reset the tooth plate (5) after displacement.

4. A handheld bolt loosening detection device according to claim 2, It is characterized in that The manual drive member comprises a threaded rod (10), a pressure block (11) and a turning handle (12). The threaded rod (10) is rotatably arranged inside a fixed frame (13), one end of which passes through the fixed frame (13) and is connected to the turning handle (12), and the middle part of the threaded rod is threadedly connected to the pressure block (11) facing the pressure sensor (7).

5. A handheld bolt loosening detection device according to claim 4, It is characterized in that A slide groove (14) for guiding the pressing block (11) is provided on the inner side of the fixing frame (13), and a hand-held handle (15) is provided on the outer side of the fixing frame (13).

6. A handheld bolt loosening detection device according to claim 2, It is characterized in that A strip-shaped through slot (16) for the connection block (6) to pass through is provided on one side of the detection box (1) close to the fixing frame (13); the connection block (6) passes through the strip-shaped through slot (16) and extends to the inner side of the fixing frame (13).

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