Car top guardrail device capable of stretching out and drawing back automatically

Abstract

The utility model provides an automatic telescopic car top guardrail device which comprises a car top plate and a telescopic mechanism, elevator maintenance personnel enter a car top shaft to tread a pressure sensing floor, signals are transmitted to a motor to control the pressure sensing floor, the pressure sensing floor transmits the signals to the motor, the motor operates to drive a transmission wheel to rotate, and the car top plate is driven to stretch out and draw back. A transmission wheel drives two sets of lifting gears to rotate through a transmission belt, two sets of unpowered lifting gears passively rotate, four sets of gear shaft seats and the lifting gears installed on the inner fixed guardrail form four sets of meshing structures, and therefore the whole outer lifting guardrail is driven by a rack to stably ascend, descend and stretch out and draw back. The height of the whole guardrail is changed to ensure that elevator maintenance personnel carry out safe and convenient maintenance work, different work requirements of the maintenance personnel when the maintenance personnel enter and exit a shaft and carry out bridge top construction are met, the safety coefficient of the elevator maintenance work is improved, the maintenance personnel can use the operation machine box to carry out later manual intervention operation on the motor and the illuminating lamp, and the working efficiency is improved. And the fault-tolerant rate of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator equipment, in particular to an automatically telescopic car top guardrail device. Background Art

[0002] The car top guardrail is used for the protection around the elevator car top, mainly to ensure the safety of the staff during the maintenance or other operations on the elevator car top and prevent the staff from accidentally falling. Therefore, during the elevator maintenance, the car top guardrail needs to be raised to a safe height for better protection of the staff.

[0003] According to the search, an automatically telescopic car top guardrail device with the publication number of CN216072590U includes fixed guardrails on three sides of the car top and a movable guardrail above the fixed guardrails. An electric push rod is also fixedly installed on the car top. The fixed section of the electric push rod is connected to the fixed guardrail, and the movable rod of the electric push rod is connected to the movable guardrail. The fixed guardrail is provided with a first safety switch and a second safety switch, and the movable guardrail is provided with a switch striker corresponding to the first safety switch and a bumper corresponding to the second safety switch.

[0004] The utility model has the characteristics of simple structure, automatic control operation, safety and reliability.

[0005] However, when implementing the above technical solutions, the following problems exist: the guardrail structure in the above technical solutions is relatively complex and cannot meet the environmental safety of maintenance staff. The guardrail structure is prone to deformation and damage during the telescopic process, and cannot stably and effectively complete the change of the guardrail height. It does not have the function of quickly raising and lowering the guardrail, the use operation steps are relatively cumbersome, and it cannot meet the different working requirements of elevator maintenance personnel entering and leaving the hoistway and car top maintenance. The safety protection devices are set less and cannot well meet the construction safety of elevator maintenance personnel. Summary of the Utility Model

[0006] The purpose of the utility model is to provide an automatically telescopic car top guardrail device to solve the problems in the above background art.

[0007] To achieve the above object, the present utility model provides the following technical solution: An automatically retractable car top guardrail, comprising a car top plate and a retractable mechanism. A ventilation channel is provided in the center of the top of the car top plate. Ventilation side plates are provided at the bottom of the ventilation channel. A retractable mechanism is provided on the top of the car top plate. A car top floor is provided on the top of the car top plate. A pressure sensing floor is provided on one side of the top of the car top floor. A central chassis is provided on the top of the car top floor. An internal fixed guardrail is provided on the outer side of the top of the car top floor. An operation chassis is provided inside the internal fixed guardrail. A motor is provided on the top of the operation chassis. A transmission wheel is provided on one side of the motor. A transmission belt is provided on the outer side of the transmission wheel. Gear shaft seats are provided on both sides of the transmission belt. A lifting gear is provided in the center of the gear shaft seat. A rack is provided on the outer side of the lifting gear. An external lifting guardrail is provided inside the rack. A partition is provided in the center of the external lifting guardrail. A lighting lamp is provided on the inner top of the partition. Cable connection boxes are provided on both sides of the top of the central chassis.

[0008] Preferably, the car top plate and the ventilation channel are fixedly connected. The car top plate and the ventilation side plates are connected by a card slot. The ventilation channel and the ventilation side plates are fixedly connected. The ventilation channel and the ventilation side plates are of matching dimensions. The ventilation side plates are provided with long holes.

[0009] Preferably, the car top floor and the pressure sensing floor are fixedly connected. The car top floor and the central chassis are fixedly connected.

[0010] Preferably, the car top floor and the internal fixed guardrail are fixedly connected. The car top floor and the internal fixed guardrail are of matching dimensions. The car top floor and the operation chassis are fixedly connected.

[0011] Preferably, the operation chassis and the motor are fixedly connected. There are two sets of the operation chassis and the motor. The motor and the transmission wheel are rotationally connected. The motors and the transmission wheels are in one-to-one correspondence. The transmission wheel and the transmission belt are in transmission connection. The transmission wheel and the gear shaft seat are rotationally connected. The gear shaft seat and the lifting gear are rotationally connected. There are four sets of the gear shaft seats. The gear shaft seats and the lifting gears are in one-to-one correspondence.

[0012] Preferably, the lifting gear and the rack are in meshing connection. The racks and the lifting gears are in one-to-one correspondence. The rack and the external lifting guardrail are fixedly connected. The external lifting guardrail and the partition are welded. The internal fixed guardrail and the external lifting guardrail form a telescopic structure through a meshing structure.

[0013] Preferably, the external lifting guardrail is fixedly connected to the lighting lamp, the operation chassis is electrically connected to the lighting lamp, there are four groups of lighting lamps, the central chassis is fixedly connected to the cable connection box, and there are two groups of cable connection boxes.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The ventilation duct and the ventilation side plate provide good ventilation and air exchange effects for the bottom elevator car on the premise of ensuring the safety of the car top structure. After the elevator maintenance personnel enter the car top hoistway and step on the pressure sensing floor, the pressure sensing floor transmits the signal to the motor for control, and then enters the car top floor area for normal maintenance work. The central chassis reserves positions for the installation of other functional devices of the elevator, reduces the environmental complexity of the car top, ensures the safety of the foot environment of the elevator maintenance personnel, the internal fixed guardrail is a guardrail with a lower height, which plays a basic protective role for the working devices on the car top. The elevator maintenance personnel can use the operation chassis to perform later manual intervention operations on the motor and the lighting lamp, improving the fault tolerance rate of the device. The pressure sensing floor transmits the signal to the motor, the motor operates to drive the transmission wheel to rotate, the transmission wheel drives two groups of lifting gears to rotate through the transmission belt, the two groups of non-powered lifting gears rotate passively, and the four groups of gear shaft seats and lifting gears installed on the internal fixed guardrail form four groups of meshing structures, ensuring that the external lifting guardrail maintains safe and effective stable lifting. The two groups of lifting gears rotate, and thus drive the entire external lifting guardrail to perform stable lifting and telescoping through the rack, and the height of the entire guardrail changes to ensure safe and convenient maintenance work for the elevator maintenance personnel, meeting the different work requirements of the maintenance personnel when entering and leaving the hoistway and constructing on the car top, improving the safety factor of the elevator maintenance work. The partition further ensures the work safety of the elevator maintenance personnel on the car top, and the lighting lamp ensures good lighting in the car top environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall external structure of the present utility model;

[0017] Figure 2 It is a schematic diagram of the front external structure of the present utility model;

[0018] Figure 3 It is a schematic diagram of the side external structure of the present utility model;

[0019] Figure 4 It is a schematic diagram of the partial meshing structure of the present utility model;

[0020] Figure 5 It is a schematic diagram of the external structure of the present utility model in the raised state.

[0021] Reference numerals in the figures: 1, car top plate; 2, ventilation duct; 3, ventilation side plate; 4, telescopic mechanism; 401, car top floor; 402, pressure sensing floor; 403, central chassis; 404, internal fixed guardrail; 405, operation chassis; 406, motor; 407, drive wheel; 408, drive belt; 409, gear shaft seat; 410, lifting gear; 411, rack; 412, external lifting guardrail; 413, partition; 414, lighting lamp; 5, steel cable connection box. Specific implementation mode

[0022] 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. 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.

[0023] Please refer to Figures 1-5 , the present invention provides a technical solution: an automatically telescopic car top guardrail, including a car top plate 1 and a telescopic mechanism 4. A ventilation duct 2 is provided in the center of the top of the car top plate 1. A ventilation side plate 3 is provided at the bottom of the ventilation duct 2. A telescopic mechanism 4 is provided on the top of the car top plate 1. A car top floor 401 is provided on the top of the car top plate 1. A pressure sensing floor 402 is provided on one side of the top of the car top floor 401. A central chassis 403 is provided on the top of the car top floor 401. An internal fixed guardrail 404 is provided outside the top of the car top floor 401. An operation chassis 405 is provided inside the internal fixed guardrail 404. A motor 406 is provided on the top of the operation chassis 405. A drive wheel 407 is provided on one side of the motor 406. A drive belt 408 is provided outside the drive wheel 407. Gear shaft seats 409 are provided on both sides of the drive belt 408. A lifting gear 410 is provided in the center of the gear shaft seats 409. A rack 411 is provided outside the lifting gear 410. An external lifting guardrail 412 is provided inside the rack 411. A partition 413 is provided in the center of the external lifting guardrail 412. A lighting lamp 414 is provided on the inner top of the partition 413. Steel cable connection boxes 5 are provided on both sides of the top of the central chassis 403.

[0024] Furthermore, the car top plate 1 is fixedly connected to the ventilation channel 2, the car top plate 1 is connected to the ventilation side plate 3 by a card slot, the ventilation channel 2 is fixedly connected to the ventilation side plate 3, the ventilation channel 2 and the ventilation side plate 3 are of matching sizes, the ventilation side plate 3 is provided with long holes, and the separation between the car top plate 1 and the top telescopic mechanism 4 ensures that there is a certain distance between the car top device and the elevator car, ensuring the personal safety of elevator passengers. The ventilation channel 2 and the ventilation side plate 3 provide good ventilation and air exchange effects for the bottom elevator car on the premise of ensuring the safety of the car top structure.

[0025] Furthermore, the car top floor 401 is fixedly connected to the pressure sensing floor 402, and the car top floor 401 is fixedly connected to the central chassis 403. After the elevator maintenance personnel enter the car top shaftway and step on the pressure sensing floor 402, the pressure sensing floor 402 transmits a signal to the motor 406 to control it, and then enters the area of the car top floor 401 to carry out normal maintenance work. The central chassis 403 reserves positions for the installation of other functional devices of the elevator, reducing the environmental complexity of the car top and ensuring the safety of the foot environment of elevator maintenance personnel.

[0026] Furthermore, the car top floor 401 is fixedly connected to the internal fixed guardrail 404, the car top floor 401 and the internal fixed guardrail 404 are of matching sizes, the car top floor 401 is fixedly connected to the operation chassis 405, and the internal fixed guardrail 404 is a guardrail with a relatively low height, which plays a basic protective role for the working devices on the car top. The elevator maintenance personnel can use the operation chassis 405 to perform later manual intervention operations on the motor 406 and the lighting lamp 414, improving the fault tolerance rate of the device.

[0027] Furthermore, the operation chassis 405 is fixedly connected to the motor 406, there are two sets of the operation chassis 405 and the motor 406, the motor 406 is rotatably connected to the transmission wheel 407, the motor 406 and the transmission wheel 407 are in one-to-one correspondence, the transmission wheel 407 is in transmission connection with the transmission belt 408, the transmission wheel 407 is rotatably connected to the gear shaft seat 409, the gear shaft seat 409 is rotatably connected to the lifting gear 410, there are four sets of the gear shaft seat 409, the gear shaft seat 409 and the lifting gear 410 are in one-to-one correspondence, the pressure sensing floor 402 transmits a signal to the motor 406, the motor 406 operates to drive the transmission wheel 407 to rotate, the transmission wheel 407 drives two sets of lifting gears 410 to rotate through the transmission belt 408, the two sets of non-powered lifting gears 410 rotate passively, and the four sets of gear shaft seats 409 and lifting gears 410 installed on the internal fixed guardrail 404 form four sets of meshing structures, ensuring the safe and effective stable lifting of the external lifting guardrail 412.

[0028] Further, the lifting gear 410 is in meshing connection with the rack 411. The racks 411 correspond to the lifting gears 410 one by one. The rack 411 is fixedly connected to the external lifting guardrail 412. The external lifting guardrail 412 is welded to the partition 413. The internal fixed guardrail 404 and the external lifting guardrail 412 form a telescopic structure through a meshing structure. When the two groups of lifting gears 410 rotate and the two groups of unpowered lifting gears 410 rotate passively, the rotation of the lifting gears 410 moves the four racks 411 upward, thereby driving the entire external lifting guardrail 412 to perform stable lifting and telescoping through the racks 411. The height of the entire guardrail is changed to ensure safe and convenient maintenance work for elevator maintenance personnel, meet the different work requirements of maintenance personnel when entering and leaving the hoistway and working on the top of the car, improve the safety factor of elevator maintenance work, and the partition 413 further ensures the work safety of elevator maintenance personnel on the top of the car.

[0029] Further, the external lifting guardrail 412 is fixedly connected to the lighting lamp 414. The operation chassis 405 is electrically connected to the lighting lamp 414. There are four groups of lighting lamps 414. The central chassis 403 is fixedly connected to the steel cable connection box 5. There are two groups of steel cable connection boxes 5. The lighting lamps 414 ensure good lighting in the environment on the top of the car. Multiple steel cables are connected to the elevator machine room through the steel cable connection box 5 to realize the lifting of the car in the hoistway.

[0030] Working principle: First, after the elevator maintenance personnel enter the hoistway on the car top, they step on the pressure-sensing floor 402. The pressure-sensing floor 402 transmits a signal to control the motor 406. The pressure-sensing floor 402 transmits a signal to the motor 406, and the motor 406 operates to drive the driving wheel 407 to rotate. The driving wheel 407 drives two sets of lifting gears 410 to rotate through the transmission belt 408. The two sets of non-powered lifting gears 410 rotate passively. Four sets of gear shaft seats 409 and lifting gears 410 installed on the internal fixed guardrail 404 form four sets of meshing structures. The two sets of lifting gears 410 rotate, and the two sets of non-powered lifting gears 410 rotate passively. The rotation of the lifting gears 410 moves the four sets of racks 411 upward, thereby driving the entire external lifting guardrail 412 to perform stable lifting and telescoping through the racks 411. The height of the entire guardrail changes to ensure safe and convenient maintenance work for elevator maintenance personnel, meet the different work requirements of maintenance personnel when entering and exiting the hoistway and constructing on the car top, improve the safety factor of elevator maintenance work. The partition 413 further ensures the work safety of elevator maintenance personnel on the car top. Then, enter the area of the car top floor 401 to perform normal maintenance work. The central chassis 403 reserves positions for the installation of other functional devices of the elevator, reduces the environmental complexity of the car top, and ensures the safety of the foot environment of elevator maintenance personnel. Elevator maintenance personnel can use the operation chassis 405 to perform post-artificial intervention operations on the motor 406 and the lighting lamp 414 to improve the fault tolerance rate of the device. Finally, the lighting lamp 414 ensures good lighting in the car top environment. Multiple steel cables are connected to the steel cable connection box 5 and connected to the elevator machine room to realize the lifting of the car in the hoistway. The separation setting between the car top plate 1 and the top telescopic mechanism 4 ensures a certain distance between the car top device and the elevator car, ensuring the personal safety of elevator passengers. The ventilation channel 2 and the ventilation side plate 3 provide good ventilation and air exchange effects for the bottom elevator car on the premise of ensuring the safety of the car top structure. In this way, the use process of an automatically telescopic car top guardrail device is completed.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatically retractable car top guardrail device, comprising a car top plate (1) and a retractable mechanism (4), characterized in that: At the center of the top of the car roof panel (1), a ventilation channel (2) is provided. At the bottom of the ventilation channel (2), a ventilation side plate (3) is provided. On the top of the car roof panel (1), a telescopic mechanism (4) is provided. On the top of the car roof panel (1), a car top floor (401) is provided. On one side of the top of the car top floor (401), a pressure sensing floor (402) is provided. On the top of the car top floor (401), a central chassis (403) is provided. On the outer side of the top of the car top floor (401), an internal fixed guardrail (404) is provided. Inside the internal fixed guardrail (404), an operation chassis (405) is provided. On the top of the operation chassis (405), a motor (406) is provided. On one side of the motor (406), a transmission wheel (407) is provided. On the outer side of the transmission wheel (407), a transmission belt (408) is provided. On both sides of the transmission belt (408), gear shaft seats (409) are provided. At the center of the gear shaft seats (409), a lifting gear (410) is provided. On the outer side of the lifting gear (410), a rack (411) is provided. Inside the rack (411), an external lifting guardrail (412) is provided. At the center of the external lifting guardrail (412), a partition plate (413) is provided. On the inner top of the partition plate (413), a lighting lamp (414) is provided. On both sides of the top of the central chassis (403), wire rope connection boxes (5) are provided.

2. The automatic telescopic car top guardrail device according to claim 1, characterized in that: The car roof panel (1) and the ventilation channel (2) are fixedly connected. The car roof panel (1) and the ventilation side plate (3) are connected by a card slot. The ventilation channel (2) and the ventilation side plate (3) are fixedly connected. The ventilation channel (2) and the ventilation side plate (3) are of matching dimensions. The ventilation side plate (3) is provided with long holes.

3. The automatic telescopic car top guardrail device according to claim 1, characterized in that: The car top floor (401) and the pressure sensing floor (402) are fixedly connected. The car top floor (401) and the central chassis (403) are fixedly connected.

4. The automatic telescopic car top guardrail device according to claim 1, characterized in that: The car top floor (401) and the internal fixed guardrail (404) are fixedly connected. The car top floor (401) and the internal fixed guardrail (404) are of matching dimensions. The car top floor (401) and the operation chassis (405) are fixedly connected.

5. An automatically retractable car top guardrail device according to claim 1, characterized in that: The operation chassis (405) and the motor (406) are fixedly connected. There are two sets of the operation chassis (405) and the motor (406). The motor (406) and the transmission wheel (407) are rotatably connected. The motor (406) and the transmission wheel (407) are in one-to-one correspondence. The transmission wheel (407) and the transmission belt (408) are in transmission connection. The transmission wheel (407) and the gear shaft seat (409) are rotatably connected. The gear shaft seat (409) and the lifting gear (410) are rotatably connected. There are four sets of the gear shaft seats (409). The gear shaft seat (409) and the lifting gear (410) are in one-to-one correspondence.

6. The automatic telescopic car top guardrail device according to claim 1, wherein: The lifting gear (410) is in meshing connection with the rack (411). The racks (411) correspond to the lifting gears (410) one by one. The rack (411) is fixedly connected to the external lifting guardrail (412). The external lifting guardrail (412) is welded to the partition plate (413). The internal fixed guardrail (404) and the external lifting guardrail (412) form a telescopic structure through a meshing structure.

7. The automatic telescopic car top guardrail device according to claim 1, wherein: The external lifting guardrail (412) is fixedly connected to the lighting lamp (414). The operation chassis (405) is electrically connected to the lighting lamp (414). There are four groups of lighting lamps (414). The central chassis (403) is fixedly connected to the steel cable connection box (5). There are two groups of steel cable connection boxes (5).

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