Anti-falling device for elevator maintenance

Abstract

The anti-falling device for elevator maintenance comprises an upper mounting shell and a lower mounting shell, the upper mounting shell is fixedly mounted at the upper end of the lower mounting shell, a fixing mechanism is mounted between the upper mounting shell and the lower mounting shell, the fixing mechanism comprises four sets of toothed plates, the four sets of toothed plates are all slidably connected to the interior of the upper mounting shell, and the toothed plates are arranged in the upper mounting shell. And one end of the toothed plate extends to the outer side of the upper mounting shell and is fixedly connected with a supporting plate, a safety rope disc assembly is fixedly mounted at the upper end of the upper mounting shell, and a limiting assembly is mounted in the upper mounting shell. By arranging the fixing mechanism, the four sets of toothed plates slide in the upper mounting shell, automatic adjustment can be conducted according to elevator shafts of different sizes, it is ensured that the supporting plates tightly abut against the inner walls of the elevator shafts, the adaptability of the device is improved, extra cost and inconvenience caused by size mismatching of a traditional supporting frame are avoided, and the practicability is high. And through automatic opening and retracting of the toothed plate, the installation operation process is simplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator maintenance technical field, concretely relates to an elevator maintenance is with anti -fall device. BACKGROUND

[0002] With the continuous development of science and technology, at present, in each high -rise building, will install elevator, to facilitate people to go up and down the stairs, and because elevator is fast and safe, so is widely loved by people, and in addition to daily use, still needs to maintain and maintain to it, to make elevator can keep stable and safe state, to complete daily operation, in the elevator maintenance process, safety problem is extremely important, in elevator maintenance operation, it is of vital importance to ensure the safety of maintenance personnel.

[0003] Due to the special environment of elevator shaft, the maintenance personnel face the risk of falling when maintaining. The traditional elevator maintenance safety device mostly adopts simple support frame or safety belt, but these devices often have poor adaptability, insufficient stability and other problems, which are difficult to meet the needs of various complex elevator shaft environments. The traditional support frame usually needs to be customized according to the size of the elevator shaft, which not only increases the cost, but also limits its applicability when facing different sizes of elevator shafts. In addition, the installation and removal process of the support frame is complicated, which brings additional burden to the maintenance personnel. SUMMARY

[0004] To solve the above technical problems, a kind of anti -fall device for elevator maintenance is provided, and the above problems of poor adaptability, insufficient stability and complicated installation and removal process are solved.

[0005] To achieve the above purposes, the technical scheme adopted by the utility model is as follows:

[0006] An anti-falling device for elevator maintenance, comprising an upper mounting shell and a lower mounting shell, the upper mounting shell is fixedly installed at the upper end of the lower mounting shell, a fixing mechanism is installed between the upper mounting shell and the lower mounting shell, the fixing mechanism comprises four groups of tooth plates, the four groups of tooth plates are all slidingly connected to the inside of the upper mounting shell, one end of the tooth plate extends to the outside of the upper mounting shell and is fixedly connected with a support plate, a safety rope reel assembly is fixedly installed at the upper end of the upper mounting shell, a limiting assembly is installed in the inside of the upper mounting shell, the limiting assembly comprises an installation frame, the installation frame is fixedly installed on the inner wall top of the upper mounting shell.

[0007] Preferably, the fixing mechanism further comprises a gear ring and four groups of driven gears, the gear ring is rotatably connected to the inside of the lower mounting shell, the four groups of driven gears are rotatably connected to the inside of the lower mounting shell, and the four groups of driven gears are all engaged with the gear ring and the tooth plate.

[0008] Preferably, the fixing mechanism further comprises a low-speed motor fixedly installed at the upper end of the upper mounting shell, an output end of the low-speed motor extends to the inside of the lower mounting shell and is fixedly connected with a driving gear, and the driving gear is engaged with the tooth ring.

[0009] Preferably, the inside of the lower mounting shell is fixedly connected with a guide rail corresponding to the tooth plate, the lower end of the tooth plate is fixedly connected with a guide block, and the guide block is slidingly connected to the inside of the guide rail.

[0010] Preferably, the inside of the mounting frame is slidingly connected with a sliding block, the lower end of the sliding block is fixedly connected with a connecting rod, and the terminal end of the connecting rod is fixedly connected with a tooth block.

[0011] Preferably, the inside of the mounting frame is rotatably connected with a driving screw, the driving screw is threadedly connected with the sliding block, the inside of the mounting frame is fixedly connected with a guide rod, and the sliding block is slidingly connected with the guide rod.

[0012] Preferably, one end of the inside of the mounting frame is rotatably connected with a worm, one end of the driving screw close to the worm is fixedly connected with a worm wheel, the worm is engaged with the worm wheel, the upper end of the worm is fixedly connected with a transmission rod, one end of the transmission rod extends to the upper end of the upper mounting shell and is fixedly connected with a handle, and the transmission rod is rotatably connected with the upper mounting shell.

[0013] Compared with the prior art, the fixing mechanism is provided, four groups of tooth plates slide in the inside of the upper mounting shell, automatic adjustment can be made according to different sizes of elevator shafts, the support plate is ensured to be closely abutted against the inner wall of the elevator shaft, the adaptability of the device is improved, additional cost and inconvenience caused by size mismatch of the traditional support frame are avoided, the automatic opening and retraction of the tooth plate simplify the installation operation process, the burden of maintenance personnel is reduced, the working efficiency is improved, and the stable support of the device in the elevator shaft is ensured.

[0014] The limiting assembly is provided, the tooth block is clamped between the teeth of the tooth ring, the rotation of the tooth ring is prevented, and the stability of the entire device during support is enhanced, thereby providing more reliable safety protection for maintenance personnel. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the utility model;

[0016] Figure 2 It is a structure schematic view of the fixing mechanism of the utility model in the open state;

[0017] Figure 3 It is a structure schematic view of the fixing mechanism of the utility model;

[0018] Figure 4The utility model discloses a guide rail, toothed plate and guide block structure schematic view.

[0019] Figure 5 The utility model discloses an upper installation shell structure schematic view.

[0020] Figure 6 The utility model discloses a limiting assembly structure schematic view.

[0021] The figure mark is:

[0022] 1, upper installation shell, 101, lower installation shell,

[0023] 2, fixed mechanism, 201, gear ring, 202, guide rail, 203, toothed plate, 204, support plate, 205, driven gear, 206, low -speed motor, 207, driving gear, 208, guide block,

[0024] 3, safety rope disc assembly,

[0025] 4, limiting assembly, 401, installation frame, 402, guide rod, 403, drive screw, 404, sliding block, 405, connecting rod, 406, toothed block, 407, worm wheel, 408, worm, 409, transmission rod, 410, handle. DETAILED DESCRIPTION

[0026] The following description is used to disclose the utility model to enable the person skilled in the art to realize the utility model. The preferred embodiments in the following description are only as examples, and other obvious variants can be thought of by the person skilled in the art.

[0027] Example 1

[0028] Please refer to Figures 1-6 As shown in the figure, an elevator maintenance is prevented falling device, including upper installation shell 1 and lower installation shell 101, upper installation shell 1 is fixedly installed on the upper end of lower installation shell 101, and fixed mechanism 2 is installed between upper installation shell 1 and lower installation shell 101, fixed mechanism 2 includes four sets of toothed plate 203, four sets of toothed plate 203 are all slidingly connected in the inside of upper installation shell 1, and the one end of toothed plate 203 extends to the outside fixed connection of support plate 204 of upper installation shell 1, the upper end of upper installation shell 1 is fixedly installed with safety rope disc assembly 3, and limiting assembly 4 is installed in the inside of upper installation shell 1, and limiting assembly 4 includes installation frame 401, and installation frame 401 is fixedly installed on the inner wall top of upper installation shell 1.

[0029] In the scheme, upper installation shell 1 and lower installation shell 101 can be installed to form a complete shell, four sets of toothed plate 203 can slide in the inside of upper installation shell 1 simultaneously, and move to the outside of four directions of upper installation shell 1 simultaneously, so as to drive support plate 204 to abut the inner wall of elevator shaft, thereby supporting shell and safety rope disc assembly 3.

[0030] Further, the middle part of the upper mounting shell 1 and the lower mounting shell 101 are both provided with through holes, and the two sets of through holes are connected, and the safety rope in the safety rope winding assembly 3 extends downward from the through hole, so as to facilitate the connection of the protective equipment on the staff;

[0031] Further, the limiting assembly 4 can limit and fix the position of the toothed plate 203, thereby increasing the stability of the entire shell when being supported, and being beneficial to the protection of the staff.

[0032] Please refer to Figures 3-4 The fixing mechanism 2 further comprises a gear ring 201 and four sets of driven gears 205, the gear ring 201 is rotationally connected to the inside of the lower mounting shell 101, and the four sets of driven gears 205 are rotationally connected to the inside of the lower mounting shell 101, and the four sets of driven gears 205 are all engaged with the gear ring 201 and the toothed plate 203.

[0033] The fixing mechanism 2 further comprises a low-speed motor 206, the low-speed motor 206 is fixedly installed on the upper end of the upper mounting shell 1, and the output end of the low-speed motor 206 extends to the inside of the lower mounting shell 101 and is fixedly connected with a driving gear 207, and the driving gear 207 is engaged with the gear ring 201.

[0034] The inside of the lower mounting shell 101 is fixedly connected with a guide rail 202 corresponding to the toothed plate 203, and the lower end of the toothed plate 203 is fixedly connected with a guide block 208, and the guide block 208 is slidingly connected to the inside of the guide rail 202.

[0035] Further, the low-speed motor 206 is electrically connected with the external power supply, the low-speed motor 206 can drive the driving gear 207 to rotate, thereby driving the gear ring 201 to rotate, and driving the four sets of toothed plates 203 to slide at the same time through the driven gears 205, so as to realize the simultaneous opening and retracting of the toothed plates 203;

[0036] Further, the sliding connection of the guide block 208 and the guide rail 202 can guide the movement of the toothed plate 203, thereby increasing the stability of the movement of the toothed plate 203.

[0037] Please refer to Figures 5-6 The inside of the mounting frame 401 is slidingly connected with a sliding block 404, the lower end of the sliding block 404 is fixedly connected with a connecting rod 405, and the end of the connecting rod 405 is fixedly connected with a tooth block 406.

[0038] The inside of the mounting frame 401 is rotationally connected with a drive screw 403, the drive screw 403 is threadedly connected with the sliding block 404, the inside of the mounting frame 401 is fixedly connected with a guide rod 402, and the sliding block 404 is slidingly connected with the guide rod 402.

[0039] The inner end of the mounting frame 401 is rotationally connected with a worm 408, the end close to the worm 408 of the driving screw 403 is fixedly connected with a worm gear 407, the worm 408 is engaged with the worm gear 407, the upper end of the worm 408 is fixedly connected with a transmission rod 409, one end of the transmission rod 409 extends to the upper end of the upper mounting shell 1 and is fixedly connected with a handle 410, and the transmission rod 409 is rotationally connected with the upper mounting shell 1.

[0040] Further, the handle 410 can drive the worm 408 to rotate through the transmission rod 409, further drive the worm gear 407 to rotate, thereby drive the driving screw 403 to rotate, so as to drive the sliding block 404 to move the connecting rod 405 and the tooth block 406, and the tooth block 406 can be clamped between the teeth of the tooth ring 201, the tooth ring 201 is limited, thereby preventing the tooth ring 201 from rotating, and the stability of the whole device is increased.

[0041] The working principle and use process of the utility model are as follows: firstly, when the elevator is maintained, the low-speed motor 206 starts and drives the driving gear 207 to rotate, so that the tooth ring 201 rotates in the inner portion of the lower mounting shell 101, the rotation of the tooth ring 201 drives the four groups of toothed plates 203 to slide in the inner portion of the upper mounting shell 1 through the driven gear 205, one end of the toothed plate 203 drives the support plate 204 to move outward until the support plate 204 abuts against the inner wall of the elevator shaft, the shell body and the safety rope disc assembly 3 are supported, different elevator shafts can be applied, the safety rope in the safety rope disc assembly 3 extends downward through the through hole and is connected to the protective equipment on the worker's body, safety guarantee is provided for the worker, when the toothed plate 203 reaches the required position, the handle 410 is rotated, the worm 408 is driven to rotate through the transmission rod 409, further drive the worm gear 407 and the driving screw 403 fixedly connected with the worm gear 407 to rotate, thereby drive the sliding block 404 to slide in the mounting frame 401, the sliding block 404 drives the tooth block 406 to move through the connecting rod 405 until the tooth block 406 is clamped between the teeth of the tooth ring 201, the tooth block 406 limits the tooth ring 201, prevents the tooth ring 201 from rotating, thereby ensuring the stable support of the toothed plate 203 and the support plate 204.

[0042] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above examples, the above examples and the description in the specification are only the principles of the utility model, various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope required by the utility model is defined by the appended claims and their equivalents.

Claims

1. A fall protection device for elevator maintenance, comprising an upper mounting shell (1) and a lower mounting shell (101), characterized in that: The upper mounting shell (1) is fixedly installed on the upper end of the lower mounting shell (101). A fixing mechanism (2) is installed between the upper mounting shell (1) and the lower mounting shell (101). The fixing mechanism (2) includes four sets of toothed plates (203). All four sets of toothed plates (203) are slidably connected to the inside of the upper mounting shell (1). One end of the toothed plate (203) extends to the outside of the upper mounting shell (1) and is fixedly connected to a support plate (204). A safety rope coil assembly (3) is fixedly installed on the upper end of the upper mounting shell (1). A limit assembly (4) is installed inside the upper mounting shell (1). The limit assembly (4) includes a mounting frame (401). The mounting frame (401) is fixedly installed on the top of the inner wall of the upper mounting shell (1).

2. The elevator maintenance anti-fall device according to claim 1, characterized in that: The fixing mechanism (2) also includes a gear ring (201) and four sets of driven gears (205). The gear ring (201) is rotatably connected to the interior of the lower mounting shell (101), and the four sets of driven gears (205) are rotatably connected to the interior of the lower mounting shell (101). The four sets of driven gears (205) mesh with the gear ring (201) and the gear plate (203).

3. The elevator maintenance anti-fall device according to claim 2, characterized in that: The fixing mechanism (2) also includes a low-speed motor (206), which is fixedly installed on the upper end of the upper mounting shell (1). The output end of the low-speed motor (206) extends into the interior of the lower mounting shell (101) and is fixedly connected to a drive gear (207). The drive gear (207) meshes with the gear ring (201).

4. The elevator maintenance anti-fall device according to claim 1, characterized in that: The lower mounting shell (101) is fixedly connected to a guide rail (202) corresponding to the toothed plate (203), and a guide block (208) is fixedly connected to the lower end of the toothed plate (203). The guide block (208) is slidably connected to the inside of the guide rail (202).

5. The elevator maintenance anti-fall device according to claim 1, characterized in that: The mounting frame (401) is internally connected to a slider (404), the lower end of the slider (404) is fixedly connected to a connecting rod (405), and the end of the connecting rod (405) is fixedly connected to a toothed block (406).

6. The elevator maintenance anti-fall device according to claim 1, characterized in that: The mounting frame (401) is rotatably connected to a drive screw (403), which is threadedly connected to a slider (404). The mounting frame (401) is fixedly connected to a guide rod (402), which is slidably connected to the slider (404).

7. The elevator maintenance anti-fall device according to claim 6, characterized in that: The mounting frame (401) has a worm gear (408) rotatably connected to one end inside. The drive screw (403) is fixedly connected to a worm wheel (407) at one end near the worm gear (408). The worm gear (408) meshes with the worm wheel (407). A transmission rod (409) is fixedly connected to the upper end of the worm gear (408). One end of the transmission rod (409) extends to the upper end of the upper mounting shell (1) and is fixedly connected to a handle (410). The transmission rod (409) is rotatably connected to the upper mounting shell (1).

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