Fixing device for elevator maintenance box

The maintenance box fixing device addresses installation complexity and dust accumulation by incorporating a dustproof enclosure and adjustable mounting system, ensuring easy installation, height adjustment, and effective dust prevention.

CN223102436UActive Publication Date: 2025-07-15杭州通华机电设备安装有限公司
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Patent Information

Application Number
CN202422246946.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-13
Publication Date
2025-07-15
Estimated Expiration
2034-09-13

AI Technical Summary

Technical Problem

The existing elevator maintenance box fixture is troublesome and is inconvenient for height adjustment. At the same time, dust is likely to accumulate after long-term use in the elevator shaft, which affects the normal use of staff.

Method used

An elevator maintenance box fixing device including a dustproof box and an adjustment mechanism is designed. The dustproof box realizes positioning of the maintenance box through slide rails and guide blocks. The adjustment mechanism realizes height adjustment through the worm and worm gear structure, and a fixing frame and connecting plate are provided in the fixing box to adapt to dustproof boxes of different sizes.

Benefits of technology

It realizes the stable fixing and dustproof effect of the maintenance box, and is convenient for height adjustment, improving the adaptability and service life of the device.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of elevator equipment, and discloses a fixing device for an elevator maintenance box. Sliding plates are fixedly arranged on the upper surface and the lower surface of the maintenance box body; the dustproof box is arranged on the periphery of the maintenance box body, one end of the dustproof box is open, and sliding rails are arranged on a bottom plate and a top plate in the dustproof box; the guide block is arranged on the sliding plate; when the maintenance box body is installed in the dustproof box, a gap is reserved between the opening position of the dustproof box and the maintenance box body, a through installation groove is formed in a side plate of the gap, a fixing shaft is fixedly arranged in the installation groove, limiting grooves are formed in the two sides of the fixing shaft respectively, and the fixing shaft is sleeved with a two-way plate. A fixing plate and a stand column are fixedly arranged on the two sides, provided with the installation groove, of the dustproof box, and elastic blocking cloth is fixed between the stand column and the fixing plate. The fixing device for the elevator maintenance box solves the problem that existing equipment is not dustproof.
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Description

Technical Field

[0001] The utility model belongs to the technical field of elevator equipment, and particularly relates to a fixing device for an elevator maintenance box. Background Technique

[0002] An elevator is a vertical lifting machine powered by an electric motor, equipped with a box-shaped gondola, used for carrying people or goods in multi-story buildings. There are also step-type ones, with the tread plates installed on the tracks and running continuously, commonly known as escalators or moving sidewalks, which are fixed lifting equipment serving specified floors. The quality of an elevator, in addition to being related to the manufacturing quality of the elevator, the installation quality also plays a very important role. Therefore, in order to ensure the safety of the elevator during normal operation, the staff needs to enter the elevator car top and use the maintenance box to check various normal functions of the elevator. The maintenance box is generally fixed on the elevator track. The existing fixing devices are relatively troublesome to install, and it is inconvenient to adjust the height of the elevator car top maintenance box after installation.

[0003] The Chinese utility model patent with the publication number CN209226344U discloses a fixing device for an elevator car top maintenance box. The fixing block is clamped on the elevator track through a card slot, and then the first handle bolt is screwed into the first threaded hole so that the end of the first handle bolt abuts against the fixing block, and the fixing of the elevator car top maintenance box can be completed, which is convenient for the installation and fixing of the elevator car top maintenance box; by unscrewing the second handle bolt, the slider can slide up and down in the chute, and then the second handle bolt is screwed into the corresponding second threaded hole and third threaded hole, which is convenient for adjusting the height of the elevator car top maintenance box. However, this device still has some other problems. For example, this maintenance box runs in the elevator shaft for a long time, and the environment inside the elevator shaft is relatively poor. During long-term use, the dust generated in the elevator shaft is very easy to fall on the elevator car top, so that the maintenance box is covered with dust, affecting the normal use of the staff. Content of the Utility Model

[0004] The purpose of the utility model is to provide a fixing device for an elevator maintenance box to solve the problems proposed in the above background technique.

[0005] To achieve the above purpose, the following technical solutions are provided: A fixing device for an elevator maintenance box, comprising:

[0006] Elevator top plate;

[0007] A maintenance box body, and sliding plates are respectively and fixedly arranged on the upper surface and the lower surface of the maintenance box body;

[0008] A dust-proof box configured around the maintenance box body, and one end of the dust-proof box is open, and slide rails are arranged on the bottom plate and the top plate inside the dust-proof box;

[0009] The guide block is arranged on one side of the sliding plate close to the slide rail, and the guide block is slidably arranged inside the slide rail;

[0010] Among them, when the maintenance box body is installed into the dust-proof box, a handle is fixedly arranged on one side of the maintenance box body close to the opening. There is a gap between the opening position of the dust-proof box and the maintenance box body. A through installation groove is opened on the side plate of the gap. A fixed shaft is fixedly arranged inside the installation groove. Limiting grooves are respectively arranged on both sides of the fixed shaft. A two-way plate is sleeved on the fixed shaft. Fixed plates and columns are fixedly arranged on both sides of the dust-proof box where the installation groove is opened. An elastic blocking cloth is fixed between the column and the fixed plate.

[0011] In the above technical solution, further, a base is fixedly arranged on the lower surface of the dust-proof box, and a fixing mechanism is arranged below the base.

[0012] In any of the above technical solutions, further, a fixed box is fixedly arranged on the elevator top plate, an adjusting mechanism is arranged inside the fixed box, and the fixing mechanism is arranged above the fixed box.

[0013] In any of the above technical solutions, further, the adjusting mechanism includes:

[0014] A screw rod, configured inside the fixed box and penetrating through both ends of the fixed box;

[0015] A motor, configured in the fixed groove of the elevator top plate;

[0016] A worm, configured on the output shaft of the motor;

[0017] A worm gear, the shaft hole of the worm gear is fixedly sleeved in the middle of the screw rod, and the worm gear meshes with the worm;

[0018] Connection blocks, configured at both ends of the screw rod, and a threaded channel is opened on one side of the connection block close to the screw rod, and the threaded channel meshes with the thread of the screw rod;

[0019] Limiting plates, configured on the periphery of the connection block close to one end of the center of the screw rod;

[0020] Support sleeves, configured on the periphery of the connection block, and the support sleeves are slidably arranged on the inner wall of the fixed box;

[0021] U-shaped plates, configured at the ends of the connection blocks away from the screw rod;

[0022] Among them, the connection blocks are slidably arranged on the side plates at both ends of the fixed box, and the threads on the screw rods at both ends of the worm gear are arranged in opposite directions.

[0023] In any of the above technical solutions, further, the fixing mechanism includes:

[0024] A fixing frame, the lower end of which is disposed inside the U-shaped plate;

[0025] A connecting plate, disposed above the fixing box, and the connecting plate is provided on both sides of the U-shaped plate;

[0026] Sliding grooves are opened on one side of the two connecting plates close to each other;

[0027] A connecting shaft is rotatably disposed on the fixing frame, and both ends of the connecting shaft slide inside the sliding grooves;

[0028] A pressing plate is disposed at the top end of the fixing frame.

[0029] In any of the above technical solutions, further, a rubber block is fixedly disposed on a surface of the pressing plate close to the fixing box.

[0030] The beneficial effects of the present utility model are:

[0031] 1. By providing a dust-proof box around the overhaul box body, an opening is provided on one side of the dust-proof box. Through the opening, the overhaul box body can be installed into the interior of the dust-proof box. Slide rails are provided on the bottom plate and the top plate inside the dust-proof box. Sliding plates are respectively fixedly disposed on the top plate and the bottom plate of the overhaul box body. Guide blocks are provided on one side of the sliding plates close to the slide rails and are used in cooperation with the slide rails. Through the guide blocks, the overhaul box body can be installed into the interior of the dust-proof box. When the overhaul box body is completely installed into the interior of the dust-proof box, a gap is left between the overhaul box body and the opening. A plurality of through mounting grooves are provided on the side plate of the dust-proof box in the gap. Fixed shafts are fixedly disposed along the direction of the slide rails inside the mounting grooves. A two-way plate that can rotate around the fixed shaft is sleeved on the fixed shafts. Limiting grooves that penetrate the side plate where they are located are respectively opened above and below the fixed shafts. A fixing plate and a column are provided on the side plate of the dust-proof box outside the mounting grooves. The fixing plate and the column are respectively disposed on both sides of the fixed groove. In this way, the elastic blocking cloth can be fixed between the fixing plate and the column. In this way, by rotating the two-way plate to the horizontal position, one end of the horizontal two-way plate is rotated through the limiting groove to be below the elastic blocking cloth, and the other end of the two-way plate can be horizontally disposed in the gap, so as to position the overhaul box body inside the dust-proof box and prevent the overhaul box body from sliding out of the interior of the dust-proof box.

[0032] 2. In order to be able to adjust the dust-proof box, a fixing device is provided above the elevator top plate. A base is fixedly arranged below the bottom plate of the dust-proof box. Fixing the base between the fixing box and the pressing plate can fix the dust-proof box. At the same time, fixing frames are arranged on the left and right sides of the fixing box. By changing the distance between the fixing frames, the left and right sides of the dust-proof box can be fixed, thereby improving the stability of the dust-proof box. Brief Description of the Drawings

[0033] Figure 1 is a schematic structural diagram of the present utility model;

[0034] Figure 2 is a schematic structural diagram of the present utility model;

[0035] Figure 3 is a schematic cross-sectional structural diagram of the present utility model;

[0036] Figure 4 is a schematic cross-sectional structural diagram of the present utility model;

[0037] Figure 5 is a schematic cross-sectional structural diagram of the dust-proof box of the present utility model;

[0038] Description of the Reference Numerals: 100, elevator top plate; 110, fixing groove; 200, overhaul box body; 210, sliding plate; 220, guide block; 230, handle; 240, gap; 250, installation groove; 260, fixing shaft; 270, limiting groove; 280, bidirectional plate; 290, fixing plate; 291, column; 292, elastic blocking cloth; 300, dust-proof box; 310, opening; 320, slide rail; 330, base; 340, fixing mechanism; 341, fixing frame; 342, connecting plate; 343, sliding groove; 344, connecting shaft; 345, pressing plate; 346, rubber block; 350, fixing box; 360, adjusting mechanism; 361, screw; 362, motor; 363, worm; 364, worm gear; 365, connecting block; 366, threaded channel; 367, limiting plate; 368, support sleeve; 369, U-shaped plate. Detailed Embodiment

[0039] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0040] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present application. For the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0041] As Figures 1 - 5 shown, this embodiment provides a fixing device for an elevator maintenance box, including:

[0042] An elevator top plate 100;

[0043] A maintenance box body 200, with sliding plates 210 fixedly arranged on the upper and lower surfaces of the maintenance box body 200 respectively;

[0044] A dust-proof box 300, configured around the maintenance box body 200, and one end of the dust-proof box 300 is provided with an opening 310, and slide rails 320 are provided on the bottom plate and the top plate inside the dust-proof box 300;

[0045] Guide blocks 220, configured on one side of the sliding plate 210 close to the slide rail 320, and the guide blocks 220 are slidably arranged inside the slide rail 320;

[0046] Among them, when the maintenance box body 200 is installed into the dust-proof box 300, a handle 230 is fixedly arranged on one side of the maintenance box body 200 close to the opening 310. A gap 240 is left between the opening 310 position of the dust-proof box 300 and the maintenance box body 200. A through installation groove 250 is provided on the side plate of the gap 240. A fixing shaft 260 is fixedly arranged inside the installation groove 250. Limiting grooves 270 are respectively arranged on both sides of the fixing shaft 260. A two-way plate 280 is sleeved on the fixing shaft 260. Fixing plates 290 and columns 291 are fixedly arranged on both sides of the dust-proof box 300 where the installation groove 250 is provided. An elastic blocking cloth 292 is fixed between the column 291 and the fixing plate 290.

[0047] In this technical solution, in order to dust-proof the overhaul box body 200, a dust-proof box 300 is provided around the overhaul box body 200. An opening 310 is provided on one side of the dust-proof box 300. Through the opening 310, the overhaul box body 200 can be installed into the interior of the dust-proof box 300. Slide rails 320 are provided on the bottom plate and the top plate inside the dust-proof box 300. Slide plates 210 are respectively and fixedly provided on the top plate and the bottom plate of the overhaul box body 200. On the side of the slide plate 210 close to the slide rail 320, guide blocks 220 are provided which are used in cooperation with the slide rail 320. Through the guide blocks 220, the overhaul box body 200 can be installed into the interior of the dust-proof box 300. When the overhaul box body 200 is completely installed into the interior of the dust-proof box 300, a gap 240 is left between the overhaul box body 200 and the opening 310. On the side plate of the dust-proof box 300 in the gap 240, a plurality of through installation grooves 250 are provided. Along the direction of the slide rail 320, a fixed shaft 260 is fixedly provided inside the installation groove 250. A two-way plate 280 which can rotate around the fixed shaft 260 is sleeved on the fixed shaft 260. Limiting grooves 270 penetrating the side plate where they are located are respectively provided above and below the fixed shaft 260. On the side plate of the dust-proof box 300 outside the installation groove 250, a fixing plate 290 and a column 291 are provided. The fixing plate 290 and the column 291 are respectively arranged on both sides of the fixed groove 110. In this way, the elastic blocking cloth 292 can be fixed between the fixing plate 290 and the column 291. By rotating the two-way plate 280 to the horizontal position and rotating one end of the horizontal two-way plate 280 below the elastic blocking cloth 292 through the limiting groove 270, the other end of the two-way plate 280 can be horizontally arranged in the gap 240. Thus, the overhaul box body 200 inside the dust-proof box 300 can be positioned to prevent the overhaul box body 200 from sliding out of the interior of the dust-proof box 300, thereby achieving the dust-proof effect on the overhaul box body 200.

[0048] This embodiment provides a fixing device for an elevator overhaul box. In addition to including the technical solution of the above embodiment, it also has the following technical features.

[0049] As Figures 1 - 5 shown, in this embodiment, a base 330 is fixedly provided on the lower surface of the dust-proof box 300, and a fixing mechanism 340 is provided below the base 330.

[0050] In this technical solution, in order to fix the dust-proof box 300 well, a base 330 is fixedly provided on the lower surface of the dust-proof box 300. The base 330 is fixed inside the fixing mechanism 340, and the fixing mechanism 340 can fix the dust-proof box 300.

[0051] This embodiment provides a fixing device for an elevator overhaul box. In addition to including the technical solution of the above embodiment, it also has the following technical features.

[0052] As Figures 1 - 4 shown, in this embodiment, a fixed box 350 is fixedly arranged on the elevator top plate 100. An adjusting mechanism 360 is arranged inside the fixed box 350, and a fixing mechanism 340 is arranged above the fixed box 350.

[0053] In this technical solution, in order to facilitate the fixation of dust-proof boxes 300 of different sizes, a fixed box 350 is arranged on the elevator top plate 100. An adjusting mechanism 360 is arranged inside the fixed box 350, and a fixing mechanism 340 is arranged above the adjusting structure. Thus, by controlling the adjusting mechanism 360, the fixing mechanism 340 is adjusted, so as to fix dust-proof boxes 300 of different sizes.

[0054] This embodiment provides a fixing device for an elevator maintenance box. In addition to including the technical solution of the above embodiment, it also has the following technical features.

[0055] As Figures 1 - 4 shown, in this embodiment, the adjusting mechanism 360 includes:

[0056] A screw rod 361, arranged inside the fixed box 350 and penetrating through both ends of the fixed box 350;

[0057] A motor 362, arranged in the fixed slot 110 of the elevator top plate 100;

[0058] A worm 363, arranged on the output shaft of the motor 362;

[0059] A worm gear 364, the shaft hole of the worm gear 364 is fixedly sleeved in the middle of the screw rod 361, and the worm gear 364 meshes with the worm 363;

[0060] Connecting blocks 365, arranged at both ends of the screw rod 361, and a threaded channel 366 is opened on one side of the connecting block 365 close to the screw rod 361, and the threaded channel 366 meshes with the thread of the screw rod 361;

[0061] A limiting plate 367, arranged on the periphery of the connecting block 365 close to one end of the center of the screw rod 361;

[0062] Support sleeves 368, arranged on the periphery of the connecting block 365, and the support sleeves 368 are slidably arranged on the inner wall of the fixed box 350;

[0063] A U-shaped plate 369, arranged at the end of the connecting block 365 away from the screw rod 361;

[0064] Among them, the connecting block 365 is slidably arranged on the side plates at both ends of the fixed box 350, and the threads on the screw rod 361 at both ends of the worm gear 364 are arranged in the opposite direction.

[0065] In this technical solution, in order to be able to adjust the fixing device, an adjusting mechanism 360 is provided. The screw 361 of the adjusting mechanism 360 is arranged inside the fixing box 350. The middle of the screw 361 is fixedly connected to the shaft hole of the worm gear 364. A fixing groove 110 is opened on the elevator top plate 100. A motor 362 is fixedly arranged inside the fixing groove 110. The output shaft of the motor 362 penetrates through the bottom plate of the fixing box 350 and extends into the fixing box 350. A worm 363 is fixedly sleeved on the output shaft of the motor 362. The worm 363 meshes with the worm gear 364. Connecting blocks 365 are sleeved at both ends of the screw 361. The connecting blocks 365 are composed of rectangular blocks. The connecting blocks 365 slide in the side plates of the fixing box 350. A threaded channel 366 is opened at one end of the connecting block 365 close to the screw 361. The threaded channel 366 meshes with the screw 361. A U-shaped plate 369 is fixedly arranged at the end of the connecting block 365 far from the screw 361. The thread directions of the screw 361 on both sides of the worm gear 364 are opposite. In this way, when the motor 362 drives the worm 363 to rotate, the worm 363 drives the turbine to rotate, so that the screw 361 rotates by itself. In this way, the threaded channels 366 in the two connecting blocks 365 can mesh with the screw 361. Thus, the two connecting blocks 365 approach or move away from each other, thereby changing the distance between the two U-shaped plates 369, realizing the change of the distance between the fixing mechanisms 340, and thus facilitating the fixing of dust-proof boxes 300 of different sizes. In addition, a limiting plate 367 is fixedly arranged at one end of the connecting block 365 close to the screw 361, which can prevent the connecting block 365 from falling off the side plate of the fixing box 350. A support sleeve 368 is arranged on the periphery of the connecting block 365 and inside the fixing box 350. The inner wall of the support sleeve 368 is slidably arranged with the connecting block 365, and the outer wall of the support sleeve 368 is slidably arranged with the inner wall of the fixing box 350. In this way, the stability of the sliding of the connecting block 365 on the side plate of the fixing box 350 can be ensured.

[0066] This embodiment provides a fixing device for an elevator maintenance box. In addition to including the technical solution of the above embodiment, it also has the following technical features.

[0067] As Figures 1 - 4 shown, in this embodiment, the fixing mechanism 340 includes:

[0068] A fixing frame 341, the lower end of which is arranged inside the U-shaped plate 369;

[0069] A connecting plate 342, which is arranged above the fixing box 350 and is arranged on both sides of the U-shaped plate 369;

[0070] A sliding groove 343 is opened on one side of the two connecting plates 342 close to each other;

[0071] The connecting shaft 344 is rotatably arranged on the fixing frame 341, and both ends of the connecting shaft 344 slide inside the sliding groove 343;

[0072] The pressing plate 345 is arranged at the top end of the fixing frame 341.

[0073] In this technical solution, in order to facilitate the fixing of the dust-proof box 300, a fixing mechanism 340 is provided. The lower end of the fixing frame 341 of the fixing mechanism 340 is arranged inside the U-shaped plate 369. On both sides of the U-shaped plate 369 above the fixing box 350, connecting plates 342 are fixedly arranged. A sliding groove 343 is formed on one side of the two connecting plates 342 close to each other. A rotatable connecting shaft 344 is arranged on the fixing frame 341. A pressing plate 345 is fixedly arranged at the top end of the mounting frame. In this way, when the distance is changed through the U-shaped plate 369, the fixing frame 341 rotates around the connecting shaft 344, so as to be able to change the distance between the pressing plate 345 and the connecting plate 342, so as to be able to fix bases 330 of different thicknesses, and thus facilitate the fixing of the dust-proof box 300.

[0074] This embodiment provides a fixing device for an elevator maintenance box. In addition to including the technical solutions of the above embodiments, it also has the following technical features.

[0075] As Figures 1 - 4 shown, in this embodiment, a rubber block 346 is fixedly arranged on the surface of the pressing plate 345 close to the fixing box 350.

[0076] In this technical solution, in order to reduce the wear between the pressing plate 345 and the base 330, a rubber block 346 is fixed on the side of the pressing plate 345 close to the fixing box 350. In this way, the contact between the pressing plate 345 and the base 330 can be reduced, so as to reduce wear and extend the service life of the parts.

[0077] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are only illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all belong to the protection scope of the present application.

Claims

1. A fixing device for an elevator inspection box, characterized in that, Comprising: An elevator top plate (100); An inspection box body (200), with sliding plates (210) fixedly arranged on the upper surface and the lower surface of the inspection box body (200) respectively; A dust-proof box (300), configured around the inspection box body (200), and one end of the dust-proof box (300) is provided with an opening (310), and slide rails (320) are provided on the bottom plate and the top plate inside the dust-proof box (300); Guide blocks (220), configured on the side of the sliding plate (210) close to the slide rail (320), and the guide blocks (220) are slidably arranged inside the slide rail (320); Wherein, when the inspection box body (200) is installed into the dust-proof box (300), a handle (230) is fixedly arranged on the side of the inspection box body (200) close to the opening (310), a gap (240) is left between the position of the opening (310) of the dust-proof box (300) and the inspection box body (200), a through installation groove (250) is provided on the side plate of the gap (240), a fixed shaft (260) is fixedly arranged inside the installation groove (250), limiting grooves (270) are respectively arranged on both sides of the fixed shaft (260), a two-way plate (280) is sleeved on the fixed shaft (260), fixing plates (290) and columns (291) are fixedly arranged on both sides of the dust-proof box (300) where the installation groove (250) is provided, and an elastic blocking cloth (292) is fixed between the column (291) and the fixing plate (290).

2. The fixing device for an elevator maintenance box according to claim 1, characterized in that: A base (330) is fixedly arranged on the lower surface of the dust-proof box (300), and a fixing mechanism (340) is arranged below the base (330).

3. The fixing device for an elevator maintenance box according to claim 2, characterized in that: A fixing box (350) is fixedly arranged on the elevator top plate (100), an adjusting mechanism (360) is arranged inside the fixing box (350), and the fixing mechanism (340) is arranged above the fixing box (350).

4. The fixing device for an elevator maintenance box according to claim 3, characterized in that: The adjusting mechanism (360) includes: A screw rod (361), configured inside the fixing box (350) and penetrating through both ends of the fixing box (350); A motor (362), configured in the fixing groove (110) of the elevator top plate (100); A worm (363), configured on the output shaft of the motor (362); A worm gear (364), the shaft hole of the worm gear (364) is fixedly sleeved in the middle of the screw rod (361), and the worm gear (364) meshes with the worm (363); Connection blocks (365), configured at both ends of the screw rod (361), and a threaded channel (366) is provided on the side of the connection block (365) close to the screw rod (361), and the threaded channel (366) meshes with the thread of the screw rod (361); A limiting plate (367), configured on the periphery of the connection block (365) close to one end of the center of the screw rod (361); The support sleeve (368) is configured around the periphery of the connection block (365), and the support sleeve (368) is slidably arranged on the inner wall of the fixed box (350); The U-shaped plate (369) is configured at one end of the connection block (365) away from the screw rod (361); Wherein, the connection block (365) is slidably arranged on the two side plates at both ends of the fixed box (350), and the threads on the screw rods (361) at both ends of the worm gear (364) are arranged in opposite directions.

5. The fixing device for an elevator inspection box according to claim 4, characterized in that: The fixing mechanism (340) includes: The fixing frame (341), the lower end of which is configured inside the U-shaped plate (369); The connecting plate (342) is configured above the fixed box (350), and the connecting plate (342) is arranged on both sides of the U-shaped plate (369); The sliding groove (343) is opened on one side of the two connecting plates (342) close to each other; The connecting shaft (344) is rotatably arranged on the fixing frame (341), and both ends of the connecting shaft (344) slide inside the sliding groove (343); The pressing plate (345) is configured at the top end of the fixing frame (341).

6. The fixing device for an elevator maintenance box according to claim 5, characterized in that: A rubber block (346) is fixedly arranged on one side of the pressing plate (345) close to the fixed box (350).