Instrument detection device

Abstract

The utility model provides an instrument detection device, which comprises a box body provided with an accommodating cavity and an opening, the opening is positioned at the top of the box body, and the opening is communicated with the accommodating cavity; the tester is arranged in the accommodating cavity, the tester is used for detecting the instrument, and one side of the tester is provided with a wiring port; the winder is arranged in the containing cavity, the winder is located on the side, where the wiring port is located, of the tester, the winder and the tester are arranged side by side, a cable is wound around the winder, one end of the cable is electrically connected with the wiring port, and the winder is used for winding or unwinding the cable. According to the technical scheme provided by the utility model, the problem that cables of an instrument testing device in the prior art are distributed disorderly and are easy to knot can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of instrument detection, and more specifically, to an instrument detection device. Background Art

[0002] Chemical instruments refer to instruments that automatically detect, display, and control variables such as temperature, pressure, liquid level, flow rate, and composition in chemical, refining, and other production processes. During the testing process of chemical instruments, testing devices are required.

[0003] However, during the testing process of existing testing devices for chemical instruments, it is the staff who carry the instruments to the testing site to detect the chemical instruments. In order to save time, the staff usually collect the detection cables together and put them into the storage box without organizing them, which easily causes the cables to knot. When the staff uses them again, they have to spend time untying the knotted cables. This not only wastes working time, but also easily causes the cables to bend and damage if they are piled up without being organized for a long time. Content of the Utility Model

[0004] The utility model provides an instrument detection device to solve the problem that the cable distribution of the existing instrument testing device is relatively chaotic and easy to knot.

[0005] The utility model provides an instrument detection device, which includes: a box body having a receiving cavity and an opening. The opening is located at the top of the box body and is communicated with the receiving cavity; a tester is arranged in the receiving cavity. The tester is used to detect the instrument, and one side of the tester has a wiring port; a wire reel is arranged in the receiving cavity. The wire reel is located on the side where the wiring port of the tester is located. The wire reel is arranged side by side with the tester. A cable is wound around the wire reel, and one end of the cable is electrically connected to the wiring port. The wire reel is used to wind or release the cable.

[0006] Further, the wire reel includes a fixed seat and a winding shaft. The fixed seat is arranged at the bottom of the box body, and the winding shaft is rotatably inserted through the fixed seat. The winding shaft is used to wind the cable; the instrument detection device further includes a limiting component. The limiting component is located in the receiving cavity and is arranged between the fixed seat and the winding shaft. The limiting component has a locking state and an avoidance state. When the limiting component is in the locking state, the limiting component can limit the rotation of the winding shaft.

[0007] Furthermore, the limit assembly includes: a mounting seat, which is arranged on a fixed seat, the mounting seat is located above the winding shaft, the mounting seat has a cavity, a slide groove is arranged on the side wall of the mounting seat, the slide groove is connected to the cavity, and the slide groove extends in a vertical direction; a moving block, part of the moving block is located in the cavity, the moving block is penetrated by the slide groove, the moving block can slide along the slide groove to approach or move away from the winding shaft, a stop structure is arranged between the moving block and the winding shaft, and the limit assembly limits the rotation of the winding shaft through the stop structure.

[0008] Furthermore, the movable block is located outside the cavity and is provided with an insertion rod on the side facing the winding shaft. The end of the winding shaft is provided with a plurality of openings at intervals along the circumferential direction. The openings are arranged corresponding to the insertion rod. When the limit assembly is in a locked state, the insertion rod is inserted into one of the openings to limit the rotation of the winding shaft; when the limit assembly is in an avoidance state, the insertion rod is away from the opening to avoid the winding shaft and allow it to rotate normally.

[0009] Furthermore, the limiting assembly also includes a driving part, which is arranged on the mounting seat and is drivingly connected to the moving block. The driving part can drive the moving block to move along the sliding groove to drive the insertion rod to insert into or avoid the opening.

[0010] Furthermore, the driving part includes: a pull rod, part of which is arranged in the cavity, one end of the pull rod is connected to the moving block, the other end of the pull rod is passed through the top of the mounting seat, the pull rod extends in the vertical direction, and the pull rod can drive the moving block to move along the slide groove to make the moving block move away from the hole; a spring, which is arranged in the cavity, one end of the spring is connected to the part of the moving block located in the cavity, and the other end of the spring is connected to the top of the mounting seat, the extension direction of the spring is the same as the extension direction of the pull rod, and the spring can provide a driving force for the moving block to approach the opening.

[0011] Furthermore, a slideway is provided on the inner wall of the mounting seat, the slideway is provided in the vertical direction, a protrusion is provided on the part of the moving block located in the cavity, the protrusion is provided corresponding to the slideway, the protrusion can move in the slideway, and the protrusion and the slideway cooperate with each other to guide the movement of the moving block.

[0012] Furthermore, the box body also includes a cover plate, which is arranged at the opening, one end of the cover plate is rotatably connected to the box body through a rotating member, and the cover plate can open or close the opening.

[0013] Furthermore, the limiting assembly is arranged at one end of the fixing seat away from the rotating member, and a hand crank handle is arranged at one end of the winding shaft away from the rotating member.

[0014] Furthermore, a handle is provided on the side wall of the box.

[0015] Applying the technical solution of the present utility model, the tester and the wire reel are arranged in the box body, which is convenient for carrying and transferring the instrument detection device. At the same time, the box body can reduce the dust on the surface of the components in the accommodation cavity and buffer the impact on the internal components, thus extending the service life of the above components. Through the setting of the wire reel, the cable can be stored and wound, which can effectively prevent the cable from being scattered and entangled to interfere with the tester or cause cable damage. It not only eliminates the need for staff to untie the knots of the cable, facilitating the next use, but also improves the space utilization rate in the accommodation cavity. At the same time, the cables in the box body are arranged in an orderly manner, ensuring the stability of the electrical connection between the cable and the tester, thereby improving the accuracy of the instrument detection device for instrument detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0017] Figure 1 shows a schematic structural diagram of the instrument detection device provided by the present utility model;

[0018] Figure 2 shows Figure 1 an enlarged view of part A in

[0019] Figure 3 shows a partial cross-sectional view of the limit component provided by the present utility model.

[0020] Among them, the above-mentioned accompanying drawings include the following reference numerals:

[0021] 10, box body; 11, accommodation cavity;

[0022] 12, cover plate;

[0023] 13, handle;

[0024] 20, tester;

[0025] 30, wire reel;

[0026] 31, fixed seat; 32, winding shaft;

[0027] 321, hand crank;

[0028] 33, opening;

[0029] 40, cable;

[0030] 50, limit component;

[0031] 51, mounting seat; 511, cavity;

[0032] 512. Slideway;

[0033] 513. Chute;

[0034] 52. Moving block;

[0035] 53. Insert rod;

[0036] 54. Driving part;

[0037] 541. Pull rod;

[0038] 542. Spring. Specific embodiments

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation on the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] As Figures 1 to 3 shown, an instrument detection device is provided in an embodiment of the present invention. The instrument detection device includes: a box body 10, a tester 20, and a wire reel 30. Among them, the box body 10 has a receiving cavity 11 and an opening. The opening is located at the top of the box body 10 and is communicated with the receiving cavity 11. The tester 20 is disposed in the receiving cavity 11. The tester 20 is used to detect the instrument, and one side of the tester 20 has a wiring port. The wire reel 30 is disposed in the receiving cavity 11. The wire reel 30 is located on the side where the wiring port of the tester 20 is located. The wire reel 30 is arranged side by side with the tester 20, so as to improve the space utilization rate inside the receiving cavity 11. A cable 40 is wound around the wire reel 30. One end of the cable 40 is electrically connected to the wiring port. The wire reel 30 is used to wind or release the cable 40.

[0041] Applying the technical solution of the present utility model, the tester 20 and the cable winder 30 are arranged in the box body 10, which facilitates the handling and transfer of the instrument detection device and improves the convenience of detection. At the same time, the box body 10 can reduce the dust on the surface of the components in the accommodation cavity 11 and buffer the impact on the internal components, thereby prolonging the service life of the above components. Through the setting of the cable winder 30, the cable 40 can be stored and wound, which can effectively prevent the cable 40 from being scattered and entangled to interfere with the tester 20 or cause damage to the cable 40. Not only does it not require the staff to untie the knots of the cable 40 for convenient next use, but also improves the space utilization rate in the accommodation cavity 11 and reduces the maintenance cost. At the same time, the cables in the box body 10 are arranged in an orderly manner, ensuring the stability of the electrical connection between the cable 40 and the tester 20, which not only improves the safety of instrument detection, but also improves the efficiency and accuracy of the instrument detection device for instrument detection.

[0042] In this embodiment, the instrument is a chemical industry instrument. In other embodiments, the instrument can be any instrument that can be detected through a cable.

[0043] As Figure 1 shown, the cable winder 30 includes a fixed seat 31 and a winding shaft 32. The fixed seat 31 is arranged at the bottom of the box body 10, and the winding shaft 32 is rotatably inserted through the fixed seat 31. The winding shaft 32 is used for winding the cable 40. The instrument detection device further includes a limiting component 50. The limiting component 50 is located in the accommodation cavity 11 and is arranged between the fixed seat 31 and the winding shaft 32. The limiting component 50 has a locked state and an avoidance state. When the limiting component 50 is in the locked state, the limiting component 50 can limit the rotation of the winding shaft 32. In this way, it can effectively avoid the accidental loosening or winding of the cable 40 during the detection process, improve the stability of the electrical connection between the cable 40 and the wiring port of the tester 20, and avoid electrical accidents. At the same time, fixing the length of the cable 40 also helps to eliminate the interference that may be brought by the change in the length of the cable 40, ensuring the safety and accuracy of the detection process.

[0044] As Figure 2As shown, the limit assembly 50 includes: a mounting seat 51 and a moving block 52. The mounting seat 51 is arranged on the fixed seat 31, the mounting seat 51 is located above the winding shaft 32, the mounting seat 51 has a cavity 511, and a slide groove 513 is arranged on the side wall of the mounting seat 51, the slide groove 513 is connected with the cavity 511, and the slide groove 513 extends in the vertical direction. Part of the moving block 52 is located in the cavity 511, and the moving block 52 is provided with a slide groove 513, and the slide groove 513 can provide guidance for the moving direction of the moving block 52. The moving block 52 can slide along the slide groove to approach or move away from the winding shaft 32, and a rotation-stopping structure is arranged between the moving block 52 and the winding shaft 32. The limit assembly 50 limits the rotation of the winding shaft 32 through the rotation-stopping structure. The above structure is simple in design, and the staff can control the locking and releasing of the winding shaft 32 by simply moving the moving block 52. Especially when it is necessary to quickly change the detection object or move the detection location, the cable length can be quickly adjusted without the tedious winding and unwinding process, which effectively improves work efficiency.

[0045] In this embodiment, the specific structure of the anti-rotation structure is not limited. A protrusion can be provided on the winding shaft 32, and a groove can be provided on the moving block 52 accordingly, and the winding shaft 32 can be limited by the cooperation between the groove and the protrusion. Alternatively, lockable buckles can be provided on the winding shaft 32 and the moving block 52, respectively, and the buckles can be fastened to limit the rotation of the winding shaft 32.

[0046] like Figure 2 As shown, the moving block 52 is located outside the cavity 511 and is provided with a plug rod 53 on one side facing the winding shaft 32. The end of the winding shaft 32 is provided with a plurality of openings 33 at intervals along the circumferential direction. The openings 33 are provided corresponding to the plug rod 53. When the limit assembly 50 is in the locked state, the plug rod 53 is inserted into one of the openings 33 to limit the rotation of the winding shaft 32; when the limit assembly 50 is in the avoidance state, the plug rod 53 is away from the opening 33 to avoid the winding shaft 32 to allow it to rotate normally. The above-mentioned arrangement makes the operation of stopping the rotation of the winding shaft 32 more intuitive and convenient. The cooperation of the plug rod 53 and the opening 33 realizes the precise locking of the winding shaft 32 by the limit assembly 50, avoids the displacement of the cable 40 due to slight vibration from the outside during the detection process, ensures the stability and reliability of the detection data of the instrument detection device, and can provide high-precision detection and maintenance for the instrument.

[0047] like Figure 3As shown, the limiting component 50 further includes a driving part 54. The driving part 54 is arranged on the mounting seat 51. The driving part 54 is drivingly connected to the moving block 52. The driving part 54 can drive the moving block 52 to move along the sliding groove 513 to drive the insertion rod 53 to insert into or avoid the opening 33. Through the arrangement of the driving part 54, the operation of the limiting component 50 is more convenient. Even in the case where the cable 40 is heavy or the winding shaft 32 is tight, the staff can control the winding and unwinding of the cable 40 through the driving part 54, so that the instrument detection device can be applicable to long-term or high-intensity detection work, reducing the physical burden of the operator. At the same time, it also improves the comfort and efficiency of the operation.

[0048] In this embodiment, the specific structure of the driving part 54 is not limited, and it can be set as a hydraulic cylinder, an electric pull rod, etc.

[0049] As Figure 3 shown, the driving part 54 includes: a pull rod 541 and a spring 542. Among them, part of the pull rod 541 is arranged in the cavity 511. One end of the pull rod 541 is connected to the moving block 52. The other end of the pull rod 541 passes through the top of the mounting seat 51 and is arranged. The pull rod 541 extends in the vertical direction. The pull rod 541 can drive the moving block 52 to move along the sliding groove 513 so that the moving block 52 moves away from the opening 33. The spring 542 is arranged in the cavity 511. One end of the spring 542 is connected to the part of the moving block 52 located in the cavity 511. The other end of the spring 542 is connected to the top of the mounting seat 51. The extending direction of the spring 542 is the same as the extending direction of the pull rod 541. The spring 542 can provide a driving force for the moving block 52 to approach the opening 33. The automatic reset function of the spring 542 enables the insertion rod 53 to automatically insert into the opening 33 when not in use, further simplifying the operation process. When moving between multiple detection points, the cable 40 can be quickly locked, avoiding the loosening or damage of the cable 40 during the movement. At the same time, the above design significantly improves the continuity and efficiency of the instrument detection, reduces the preparation time before detection and the sorting time after detection, and further improves the detection efficiency of the instrument detection device.

[0050] Moreover, the structures of the pull rod 541 and the spring 542 are simple, without the need for electricity or an oil tank to provide power for them. It can be achieved by the staff pulling or releasing the pull rod 541, improving the convenience of the operation. And it reduces the complexity of the components in the instrument detection device, making the installation and disassembly operations more convenient. At the same time, it saves the maintenance cost of the instrument detection device.

[0051] As Figure 3As shown, a slideway 512 is provided on the inner wall of the mounting base 51. The slideway 512 is arranged in the vertical direction. A protrusion is provided on the part of the moving block 52 located in the cavity 511. The protrusion corresponds to the slideway 512, and the protrusion can move in the slideway 512. The protrusion and the slideway 512 cooperate with each other to guide the movement of the moving block 52. The guiding structure formed by the cooperation of the slideway 512 and the protrusion ensures the smooth movement of the moving block 52 in the chute 513, avoids the jamming or deviation of the moving block 52 during the operation process, and improves the stability of the switching between different states of the limiting component 50.

[0052] As Figure 1 shown, the box body 10 further includes a cover plate 12. The cover plate 12 is arranged to cover the opening. One end of the cover plate 12 is rotatably connected to the box body 10 through a rotating member, and the cover plate 12 can be opened or closed to cover the opening. The setting of the cover plate 12 not only avoids the accidental collision and damage of the tester 20 and the cable winder 30 in the box body 10, but also enables the cable 40 to be neatly wound in the box body 10 after the detection is completed, which is convenient for carrying and storage. Among them, the rotating member can be a rotating shaft or a hinge.

[0053] As Figure 1 shown, the limiting component 50 is arranged at one end of the fixed seat 31 away from the rotating member, and a hand crank 321 is arranged at one end of the winding shaft 32 away from the rotating member. In this way, the staff can easily manually control the rotation of the winding shaft 32, improving the convenience of the staff's operation.

[0054] Among them, a handle 13 is further arranged on the side wall of the box body 10. The handle 13 makes it more convenient to carry the instrument detection device. Even when carrying other tools or equipment, the staff can easily operate with one hand, improving the work efficiency.

[0055] When testing an instrument using the instrument testing device provided by the present application, the staff carries the device to the test site, then opens the cover 12, holds the hand crank handle 321 with one hand, and pulls the pull rod 541 with the other hand, thereby driving the moving block 52 to move upward, and driving the spring 542 to contract and move through the moving block 52, while driving the insertion rod 53 to move out of the hole 33. At this time, the limit assembly 50 is in an avoidance state, and then the staff turns the hand crank handle 321, and drives the winding shaft 32 to rotate through the hand crank handle 321, and drives the winding shaft 32 to rotate through the winding shaft 33. The shaft 32 rotates to retract and release the cable 40. After the retraction and release is completed, the staff releases the hand pulling the pull rod 541. As the pulling force is eliminated, the spring 542 is reset, and the moving block 52 is pushed to move by the spring 542, driving the insertion rod 53 to reset and insert into the opening 33, and the rotation of the winding shaft 32 is limited. At this time, the limit assembly 50 is in a locked state to prevent the winding shaft 32 from rotating during the instrument detection process. Then the plug of the cable 40 is connected to the wiring port of the tester 20, and the instrument can be tested through the cooperation of the tester 20 and the cable 40. After the test is completed, the plug of the cable 40 is separated from the tester 20, and the cable 40 is retracted by the hand crank handle 321 and the pull rod 541. Finally, the insertion rod 53 is inserted into the opening 33.

[0056] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0057] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0058] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary explanation, these orientation words do not indicate and imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present utility model; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0059] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above-mentioned", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to cover different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0060] In addition, it should be noted that using words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional declaration, the above-mentioned words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present utility model.

[0061] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An instrument detection device, characterized in that, The instrument detection device includes: A box body (10) having a receiving cavity (11) and an opening, the opening being located at the top of the box body (10), and the opening communicating with the receiving cavity (11); A tester (20) disposed in the receiving cavity (11), the tester (20) being used for detecting an instrument, and one side of the tester (20) having a wiring port; A wire reel (30) disposed in the receiving cavity (11), the wire reel (30) being located on the side where the wiring port of the tester (20) is located, the wire reel (30) being arranged side by side with the tester (20), a cable (40) being wound around the wire reel (30), one end of the cable (40) being electrically connected to the wiring port, and the wire reel (30) being used for winding or unwinding the cable (40).

2. The instrument detection device according to claim 1, wherein The wire reel (30) includes a fixed seat (31) and a winding shaft (32), the fixed seat (31) being disposed at the bottom of the box body (10), the winding shaft (32) being rotatably inserted through the fixed seat (31), and the winding shaft (32) being used for winding the cable (40); The instrument detection device further includes a limiting component (50), the limiting component (50) being located in the receiving cavity (11), the limiting component (50) being disposed between the fixed seat (31) and the winding shaft (32), and the limiting component (50) having a locked state and an avoidance state. When the limiting component (50) is in the locked state, the limiting component (50) can limit the rotation of the winding shaft (32).

3. The instrument detection device according to claim 2, characterized in that The limiting component (50) includes: A mounting seat (51) disposed on the fixed seat (31), the mounting seat (51) being located above the winding shaft (32), the mounting seat (51) having a cavity (511), a sliding groove (513) being provided on the side wall of the mounting seat (51), the sliding groove (513) communicating with the cavity (511), and the sliding groove (513) extending in the vertical direction; A moving block (52), part of the moving block (52) being located in the cavity (511), the moving block (52) being inserted through the sliding groove (513) and being capable of sliding along the sliding groove (513) to approach or move away from the winding shaft (32), and a rotation prevention structure being provided between the moving block (52) and the winding shaft (32), and the limiting component (50) restricting the rotation of the winding shaft (32) through the rotation prevention structure.

4. The instrument detection device according to claim 3, wherein The moving block (52) is located outside the cavity (511), and a plug rod (53) is arranged on one side facing the winding shaft (32). A plurality of openings (33) are arranged at intervals along the circumferential direction at the end of the winding shaft (32). The openings (33) are arranged corresponding to the plug rod (53). When the limiting component (50) is in the locked state, the plug rod (53) is inserted into one of the openings (33) to limit the rotation of the winding shaft (32); when the limiting component (50) is in the avoiding state, the plug rod (53) is away from the opening (33) to avoid the winding shaft (32) so that it can rotate normally.

5. The instrument detection device according to claim 4, characterized in that The limiting component (50) further includes a driving part (54). The driving part (54) is arranged on the mounting seat (51). The driving part (54) is in driving connection with the moving block (52). The driving part (54) can drive the moving block (52) to move along the sliding groove (513) to drive the plug rod (53) to insert into or avoid the opening (33).

6. The instrument detection device according to claim 5, characterized in that, The driving part (54) includes: A pull rod (541). Part of the pull rod (541) is arranged in the cavity (511). One end of the pull rod (541) is connected to the moving block (52). The other end of the pull rod (541) is arranged through the top of the mounting seat (51). The pull rod (541) extends in the vertical direction. The pull rod (541) can drive the moving block (52) to move along the sliding groove (513) so that the moving block (52) is away from the opening (33); A spring (542) is arranged in the cavity (511). One end of the spring (542) is connected to the part of the moving block (52) located in the cavity (511). The other end of the spring (542) is connected to the top of the mounting seat (51). The extending direction of the spring (542) is the same as the extending direction of the pull rod (541). The spring (542) can provide a driving force for the moving block (52) to approach the opening (33).

7. The instrument detection device according to claim 3, characterized in that A slideway (512) is arranged on the inner wall of the mounting seat (51). The slideway (512) is arranged in the vertical direction. A protrusion is arranged on the part of the moving block (52) located in the cavity (511). The protrusion is arranged corresponding to the slideway (512). The protrusion can move in the slideway (512). The protrusion and the slideway (512) cooperate with each other to guide the movement of the moving block (52).

8. The instrument detection device according to claim 2, characterized in that The box body (10) further includes a cover plate (12). The cover plate (12) covers the opening. One end of the cover plate (12) is rotationally connected to the box body (10) through a rotating part. The cover plate (12) can open or close the opening.

9. The instrument detection device according to claim 8, characterized in that the limit assembly (50) is arranged at one end of the fixed seat (31) far from the rotating member, and a hand crank (321) is arranged at one end of the winding shaft (32) far from the rotating member.

10. The instrument detection device according to claim 1, characterized in that a handle (13) is further arranged on the side wall of the box body (10).

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