CN117446615A - Maintenance control method and structure of folding type car roof guardrail - Google Patents
Maintenance control method and structure of folding type car roof guardrail Download PDFInfo
- Publication number
- CN117446615A CN117446615A CN202311792545.6A CN202311792545A CN117446615A CN 117446615 A CN117446615 A CN 117446615A CN 202311792545 A CN202311792545 A CN 202311792545A CN 117446615 A CN117446615 A CN 117446615A
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- Prior art keywords
- car
- guardrail
- car roof
- elevator
- folding
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- 238000012423 maintenance Methods 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000001960 triggered effect Effects 0.000 claims abstract description 8
- 230000001174 ascending effect Effects 0.000 claims abstract description 3
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000004080 punching Methods 0.000 description 8
- 238000007689 inspection Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0043—Devices enhancing safety during maintenance
- B66B5/005—Safety of maintenance personnel
- B66B5/0081—Safety of maintenance personnel by preventing falling by means of safety fences or handrails, being operable or not, mounted on top of the elevator car
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
Abstract
The invention provides a maintenance control method and structure of a folding type car top guardrail, belonging to the technical field of elevator car maintenance, wherein the method comprises the steps that a control system detects that a non-flat layer door is opened and the weight of a car is increased, the weight of the car is not reduced after the non-flat layer door is closed, and an elevator enters a quasi-car top maintenance mode; the guardrail switch and the car roof maintenance switch are triggered, the elevator enters a car roof maintenance mode, and the car can ascend and descend; if the car is in the limiting area, the control system controls the car to decelerate and stop, and the staff can only control the car to descend; after the overhaul is completed, closing the guardrail switch and the car roof overhaul switch, and resetting the overhaul switch in the control cabinet; the elevator exits from the car roof maintenance mode and enters into the normal running mode. The method can realize the ascending and descending of the elevator with the telescopic or folding car top guardrail in the car top maintenance mode; the structure can strengthen the strength of the car roof guardrail; the single-sided guardrail can be adapted for use with small hoistway elevators.
Description
Technical Field
The invention belongs to the technical field of elevator car overhaul, and particularly relates to an overhaul control method and structure of a folding type car roof guardrail.
Background
The car top guardrail is used for protecting personal safety of personnel who overhauls the operation at the car top, and as the height standard of the car top guardrail is improved, the punching top height of the original elevator well is not in line with the requirement.
The height standard of the car top rail specifies that the height of the car top rail of an elevator depends on the distance of the car from its adjacent hoistway wall, and when this distance exceeds 500mm, the height of the car top rail reaches a height of up to 1.1 meters.
In the prior art, the car top guardrail is directly arranged on the car top, and as the car top of the elevator is very high and the car top guardrail is 1.1 m, elevator manufacturers put forward higher requirements on the elevator top punching height, but the increase of the top punching height can cause the increase of civil engineering cost; the height of the car top guardrail of a part of built elevator shafts does not meet the requirement of the height standard of the car top guardrail because the part of built elevator shafts cannot meet the requirement of the height of the car top guardrail.
In order to solve the problems, some manufacturers use telescopic and folding car roof guardrails, and when personnel are in a car roof working area, the telescopic guardrails are pulled out or opened, so that the height standard requirements of the car roof guardrails are met; when people leave the car roof, the guardrail is retracted, so that the requirement of the elevator on the roof-punching height is met. The control logic of the existing telescopic and folding car roof guardrails is as follows:
1) When the elevator is in a normal running mode (fast running), the guardrail is retracted, the elevator meets the requirement of the top-rushing height, and the elevator is not allowed to stand by the car top at the moment, but can run fast;
2) When the elevator is overhauled, the car roof guardrail is opened, the requirement of the top-rushing height is not met, the elevator is not allowed to run, and the car roof is allowed to stand;
3) Because the control system can not judge whether the car roof stands or not, in order to ensure safety, a specified maintenance personnel must obey the safety operation regulations of the car roof, and after entering the car roof, the car roof guardrail is manually pulled up, so that the control system of the elevator receives signals for entering the maintenance mode, and the car is kept in a static state.
In combination, the elevator provided with telescopic and folding guardrails has the following problems:
firstly, when the elevator is overhauled, as the guardrail at the top of the elevator is opened at the moment, the elevator does not meet the requirement of the top punching height, so that the elevator is not allowed to move, and only static maintenance operation can be carried out at the top of the elevator, thereby causing inconvenience for overhauling the elevator;
secondly, if the maintainer violates the safety operation rule of the car roof, the car roof guardrail is not manually opened after entering the car roof, then the control system does not receive a signal that the elevator enters the maintenance mode, the control system of the elevator cannot judge that the car roof is someone, the elevator non-flat landing door is closed, and the elevator continues to run fast, so that the safety risk is increased for the maintainer of the car roof (at the moment, the top-rushing height does not meet the standard requirement).
The existing design standard of the car top guardrail also provides higher requirements on the strength of the telescopic and folding guardrails, the vertical force of 1000N is required to be applied to any point on the top of the guardrail, the elastic deformation of the guardrail cannot exceed 5cm, but the existing telescopic guardrail is difficult to meet the requirements.
According to the design requirement of the car roof guardrail, when the distance between the car roof and the adjacent shaft wall is not more than 300mm, the car roof guardrail is not arranged on the side, but the strength of the guardrail is often improved in order to meet the strength standard requirement in the prior art, the car roof guardrail is designed into a three-side guardrail, the heights of guardrails on all sides in the three-side guardrail are consistent, and when the shaft roof is an inclined roof, the punching height requirement of the guardrails on all sides is difficult to meet.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a maintenance control method and a structure of a folding type car top guardrail, and the technical problem to be solved by the invention is how to realize the ascending and descending of an elevator provided with a telescopic type guardrail and a folding type guardrail in a maintenance mode so as to facilitate the smooth operation of the maintenance work; how to avoid the danger to the safety of the staff caused by the fact that the elevator is continuously in a normal running mode when the staff is on the car roof but does not carry out the safety operation regulations of the car roof; how to improve the strength of the car roof guardrail; how to provide a car top guardrail applicable to a small-well elevator; when the well is the oblique top, how to reduce the requirement of sedan-chair top guardrail to the top height.
In order to solve the technical problems, the invention provides a maintenance control method of a folding type car top guardrail, which comprises the following steps:
step S1: the method comprises the steps that a worker opens an overhaul switch in a control cabinet, then opens a landing door from the outside of a hoistway, the lift car stops running, the worker enters the lift car roof, and a control system detects that the landing door of a non-flat floor is opened and the weight of the lift car is increased;
step S2: the control system detects that the landing door of the non-flat floor is closed, and the weight of the elevator car is not reduced, the elevator enters a quasi-car top maintenance mode, and the elevator is in a stop state;
step S3: the staff triggers the guardrail switch and the car roof maintenance switch at the same time, the control system detects that the car roof guardrail is pulled up, the elevator enters a car roof maintenance mode, and the staff can control the car to ascend and descend;
step S4: the control system judges whether the car is in a limiting area, and if the car is in the limiting area, the worker can only control the car to descend; if the car is not in the restricted area, the staff can control the car to go up and down;
step S5: after the staff finishes the maintenance work, closing the guardrail switch and the car roof maintenance switch, leaving the hoistway through the landing door of the non-flat layer, and resetting the maintenance switch in the control cabinet of the elevator; the elevator exits from the car roof maintenance mode and enters into the normal running mode.
Further, in the step S1, the weight of the car is increased by more than 40KG.
Further, in step S2, the elevator enters a quasi-car top maintenance mode, and simultaneously, the elevator sends out a prompt tone to prompt a worker to open a car top maintenance switch to control the car or safely exit the maintenance switch in the car top reset control cabinet.
Further, in step S2, when the elevator is in the quasi-car roof maintenance mode or the car roof maintenance mode, the car cannot level the topmost floor, and if the elevator is to exit from the mode, the workers need to safely evacuate the car roof, and manually re-repair the maintenance switch in the control cabinet of the elevator.
Further, in the step S3, when the distance between one side of the car roof and the hoistway wall is not greater than the set distance, the car roof guardrail is not provided on the side.
Further, in the step S3, the distance is set to 300mm.
Further, in the step S3, the car roof guardrail is a three-sided guardrail or a single-sided guardrail.
Further, in the step S4, a limit switch is installed on the wall of the hoistway, the upper portion of the limit switch is a limited area, when the car moves upwards and triggers the limit switch, the control system controls the car to slow down and stop, and at this time, the staff can only control the car to move downwards.
The invention provides a structure of a folding type car roof guardrail, which is controlled by utilizing the overhaul control method of the folding type car roof guardrail, wherein the structure is a unilateral guardrail and comprises a guardrail body and a detachable fixing piece;
the guardrail body is arranged at one side of the car roof close to the counterweight; the guardrail body comprises a plurality of folding plates, and the adjacent folding plates are rotationally connected; one side of each pair of adjacent folding plates is provided with a detachable fixing piece, and the detachable fixing piece can limit the rotation of the folding plates.
Further, the guardrail body comprises a first folding plate and a second folding plate, and the first folding plate and the second folding plate are connected through a hinge.
Further, the hinge is a heavy hinge.
Further, the folding plate is arranged parallel to the horizontal plane;
further, the detachable fixing member includes a socket and a latch, and each group of sockets is provided on two adjacent folding plates.
Further, the socket is arranged on one side of the folding plate, the socket comprises a plurality of cutting bars, a plurality of through holes are formed in the cutting bars, and the bolts penetrate through the through holes.
Further, the plurality of slips are disposed parallel to the horizontal plane.
Further, a guardrail switch is arranged on the folding plate, and when the bolt and the socket are installed into a whole, the guardrail switch can be triggered.
According to the overhaul control method for the folding type car roof guardrail, the limit switch is arranged in the hoistway, the area above the limit switch is limited, the area below the limit switch is not limited, when the limit switch is triggered by an elevator, a control system controls the elevator to decelerate and stop, at the moment, a worker can only control the elevator to descend, and when the elevator is in the non-limited area, the worker can control the elevator to ascend and descend, so that the elevator provided with the telescopic or folding type car roof guardrail can ascend and descend in an overhaul mode, and the overhaul work of the worker can be smoothly carried out; control logic for entering a quasi-car roof maintenance mode by setting an elevator: the control system detects that the landing door of the non-flat floor is closed, the weight of the elevator car is not reduced, the elevator enters a quasi-car roof maintenance mode, and the elevator is in a stop state, so that workers can be prevented from being positioned on the car roof, but no safety operation regulations of the car roof are carried out, and the elevator is still in a normal running mode, so that the safety of the workers is threatened.
The invention relates to a folding type car top guardrail structure, which is a single-side guardrail and is suitable for a small-shaft elevator, and because the distance between the elevator far away from a counterweight side car top and the distance between the car top at the rear part of the car and an adjacent shaft wall is not more than 300mm, the car top guardrail is not required to be designed, and only the guardrail is arranged at the side adjacent to the counterweight, so that the folding type car top guardrail is the single-side guardrail; when the hoistway is an inclined roof, only the requirement of the top punching height of one side of the car roof guardrail (namely, the unilateral guardrail) is met, and the requirement of the car roof guardrail on the requirement of the elevator on the top punching height is reduced; the unilateral guardrail comprises a plurality of folding plates, and the adjacent folding plates are connected through heavy hinges, so that the strength of the car top guardrail is improved, and the strength requirement of the car top guardrail is met; be provided with the guardrail switch on the folding board, can not take place rotatoryly between the folding board when the bolt inserts the socket, the sedan-chair top guardrail is in the state of pulling up, and at this moment, the guardrail switch is triggered.
Drawings
Fig. 1 is a flow chart of a method of controlling service of a folding type car roof guardrail of the present invention.
Fig. 2 is a flow chart of an elevator entering a car roof inspection mode according to an inspection control method of the folding car roof guardrail of the present invention.
Fig. 3 is a flow chart of an elevator exit ceiling maintenance mode of a maintenance control method of a folding ceiling guardrail of the present invention.
Fig. 4 is a front view of the structure of a folding type car roof rail of the present invention.
Fig. 5 is a side view of the structure of a folding ceiling guardrail of the present invention; the arrow mode in the figure is the direction in which the car roof guardrail is retracted.
In the figure, a guardrail body is shown as 1; 2-a detachable fixing member; 3-hinges; 4-guardrail switches; 5-guard bar foot guard plates; 6-a support; 7-a car roof; 11-a first folding plate; 12-a second folding plate; 21-a socket; 22-latch.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In order to better understand the purpose, structure and function of the present invention, the following describes in detail the maintenance control method and structure of a folding car roof guardrail according to the present invention with reference to the accompanying drawings.
Example 1:
as shown in fig. 1, 2 and 3, the overhaul control method of the folding type car top guardrail provided by the invention comprises the following steps:
step S1: the staff opens the maintenance switch in the control cabinet, then opens the landing door from the outside of the well, the lift car stops running, the staff enters the lift car roof 7, the control system detects that the landing door of the non-flat floor is opened and the weight of the lift car is increased;
step S2: the control system detects that the landing door of the non-flat floor is closed, and the weight of the elevator car is not reduced, the elevator enters a quasi-car top maintenance mode, and the elevator is in a stop state;
step S3: the staff triggers the guardrail switch 4 and the car roof maintenance switch at the same time, the control system detects that the car roof guardrail is pulled up, the elevator enters a car roof maintenance mode, and the staff can control the car to ascend and descend;
step S4: the control system judges whether the car is in a limiting area, and if the car is in the limiting area, the worker can only control the car to descend; if the car is not in the restricted area, the car can go up and down;
step S5: after the maintenance work is completed by the staff, the guardrail switch 4 and the car roof maintenance switch are closed, the elevator leaves the hoistway through the landing door of the non-flat layer, the maintenance switch in the control cabinet of the elevator is reset, the elevator exits from the car roof maintenance mode, and the elevator enters into the normal operation mode.
Example 2:
as shown in fig. 1, 2 and 3, the overhaul control method of the folding type car top guardrail provided by the invention comprises the following steps:
step S1: the staff opens the maintenance switch in the control cabinet, then opens the landing door from the outside of the well, the lift car stops running, the staff enters the lift car roof 7, the control system detects that the landing door of the non-flat floor is opened and the weight of the lift car is increased;
step S2: the control system detects that the landing door of the non-flat floor is closed, and the weight of the elevator car is not reduced, the elevator enters a quasi-car top maintenance mode, and the elevator is in a stop state;
step S3: the staff triggers the guardrail switch 4 and the car roof maintenance switch at the same time, the control system detects that the car roof guardrail is pulled up, the elevator enters a car roof maintenance mode, and the staff can control the car to ascend and descend;
step S4: the control system judges whether the car is in a limiting area, and if the car is in the limiting area, the worker can only control the car to descend; if the car is not in the restricted area, the car can go up and down;
step S5: after the maintenance work is completed by the staff, the guardrail switch 4 and the car roof maintenance switch are closed, the elevator leaves the hoistway through the landing door of the non-flat layer, the maintenance switch in the control cabinet of the elevator is reset, the elevator exits from the car roof maintenance mode, and the elevator enters into the normal operation mode.
The present embodiment is different from the first embodiment in that:
in the step S1, the weight of the car is increased by more than 40KG;
in step S2, the elevator enters a quasi-car roof maintenance mode, and simultaneously the elevator sends out a prompt tone to prompt a worker to open a car roof maintenance switch to control the car or to safely exit the car roof and then reset the maintenance switch.
In step S2, when the elevator is in the quasi-car roof maintenance mode or the car roof maintenance mode, the car cannot level the topmost layer station, and if the elevator is to exit from the mode, the workers need to safely evacuate the car roof 7 all the time, and manually re-maintenance the switch in the control cabinet of the elevator.
In the step S3, when the distance between one side of the car roof 7 and the hoistway wall is not greater than 300mm, the side is not provided with a car roof guardrail;
in the step S3, the guardrail is a three-sided guardrail or a single-sided guardrail.
In the step S4, a limit switch is installed on the wall of the hoistway, the upper part of the limit switch is a limited area, when the car moves upwards and triggers the limit switch, the control system controls the car to slow down and stop, and at this time, the car can only perform descending operation.
Example 3:
as shown in fig. 4 and 5, the invention provides a structure of a folding type car top guardrail, which is controlled by using the overhaul control method of the folding type car top guardrail, and the structure is a single-side guardrail structure and comprises a guardrail body 1 and a detachable fixing piece 2;
the guardrail body 1 is arranged at one side of the top of the car 7, which is close to the counterweight; the guardrail body 1 comprises a plurality of folding plates, and adjacent folding plates are rotationally connected; one side of each pair of adjacent folding plates is provided with a detachable fixing member 2, and the detachable fixing member 2 can restrict the rotation of the folding plates.
Example 4:
as shown in fig. 4 and 5, the invention provides a structure of a folding type car top guardrail, which is controlled by using the overhaul control method of the folding type car top guardrail, and the structure is a single-side guardrail structure and comprises a guardrail body 1 and a detachable fixing piece 2;
the guardrail body 1 is arranged at one side of the top of the car roof 7, which is close to the counterweight; the guardrail body 1 comprises a plurality of folding plates, and adjacent folding plates are rotationally connected; one side of each pair of adjacent folding plates is provided with a detachable fixing member 2, and the detachable fixing member 2 can restrict the rotation of the folding plates.
The present embodiment is different from the third embodiment in that:
the guardrail body 1 comprises a first folding plate 11 and a second folding plate 12, and the first folding plate 11 and the second folding plate 12 are connected through a hinge 3; the hinge 3 is a heavy hinge, so that the strength of the folding type car roof guardrail can be improved; the folding plate is arranged parallel to the horizontal plane;
the detachable fixing member 2 includes sockets 21 and pins 22, each group of sockets 21 is provided on two adjacent folding plates, specifically, the sockets 21 are provided on the first folding plate 11 and the second folding plate 12, and the pins 22 are inserted into the inside of each group of sockets 21 so that the adjacent folding plates are kept in a collinear state;
the socket 21 is arranged on one side of the folding plate, the socket 21 comprises a plurality of cutting bars, a plurality of through holes are formed in the cutting bars, and the cutting bars are parallel to the horizontal plane;
the guardrail switch 4 is arranged on the folding plate, and when the first folding plate 11 and the second folding plate 12 are kept in a collinear state, the guardrail switch 4 can be triggered;
the car roof 7 is provided with a guardrail foot guard plate 5, and the guardrail foot guard plate 5 is also connected with the guardrail body 1 and used for reinforcing the strength of the car roof guardrail;
a supporting piece 6 is arranged below the guardrail body 1, one end of the supporting piece 6 is connected with the guardrail body 1, and the other end of the supporting piece 6 is connected with a car roof 7 for supporting the guardrail body 1;
the invention relates to a folding type car top guardrail structure, which comprises the following using process:
when the first folding plate 11 is folded along the arrow direction in fig. 5, the first folding plate 11 and the second folding plate 12 are overlapped, and the car roof guardrail is in a retracted state;
in preparation for maintenance, the first folding plate 11 is turned up in the direction opposite to the arrow in fig. 5, the latch 22 is passed through the through hole of the socket 21, the rotation of the first folding plate 11 is restricted, the first folding plate 11 and the second folding plate 12 are in a collinear state, the barrier switch 4 is triggered, and the car roof barrier is in a pulled-up state.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (15)
1. The overhauling control method for the folding type car roof guardrail is characterized by comprising the following steps of:
step S1: the method comprises the steps that a worker opens an overhaul switch in a control cabinet, then opens a landing door from the outside of a hoistway, the lift car stops running, the worker enters the lift car roof, and a control system detects that the landing door of a non-flat floor is opened and the weight of the lift car is increased;
step S2: the control system detects that the landing door of the non-flat floor is closed, and the weight of the elevator car is not reduced, the elevator enters a quasi-car top maintenance mode, and the elevator is in a stop state;
step S3: the staff triggers the guardrail switch and the car roof maintenance switch at the same time, the control system detects that the car roof guardrail is pulled up, the elevator enters a car roof maintenance mode, and the staff can control the ascending and descending of the car;
step S4: the control system judges whether the car is in a limiting area, and if the car is in the limiting area, the worker can only control the car to descend; if the car is not in the restricted area, the staff can control the car to go up and down;
step S5: after the staff finishes the maintenance work, closing the guardrail switch and the car roof maintenance switch, leaving the hoistway through the landing door of the non-flat layer, and resetting the maintenance switch in the elevator control cabinet; the elevator exits from the car roof maintenance mode and enters into the normal running mode.
2. The maintenance control method for a folding top guard rail according to claim 1, wherein in the step S1, the weight of the car is increased by more than 40KG.
3. The maintenance control method of the folding car roof guardrail according to claim 1, wherein in the step S2, the elevator enters a quasi-car roof maintenance mode, and simultaneously the elevator gives a prompt tone to prompt a worker to open a car roof maintenance switch to control the car or to reset a maintenance switch in an elevator control cabinet after safely exiting the car roof.
4. The maintenance control method of the folding car roof guardrail according to claim 1, wherein in the step S2, when the elevator is in the quasi-car roof maintenance mode or the car roof maintenance mode, the car cannot level the topmost layer station, if the elevator is to exit the quasi-car roof maintenance mode or the car roof maintenance mode, the operator needs to safely withdraw the car roof all the time, and manually re-repair the maintenance switch in the control cabinet of the elevator.
5. The maintenance control method of a folding car roof rail according to claim 1, wherein in the step S3, when a distance between one side of the car roof and a hoistway wall is not greater than a set distance, the side is not provided with the car roof rail.
6. The maintenance control method of a folding car roof rail according to claim 5, wherein in the step S3, the set distance is 300mm.
7. The maintenance control method of a folding car roof rail according to claim 5, wherein in the step S3, the car roof rail is a three-sided rail or a single-sided rail.
8. The method according to claim 1, wherein in the step S4, a limit switch is installed on the wall of the hoistway, the upper part of the limit switch is a limited area, and when the car moves upwards and the limit switch is triggered, the control system controls the car to slow down and stop, and then the worker can only control the car to move downwards.
9. A structure of a folding car roof guardrail, characterized in that the structure is controlled by the overhaul control method of the folding car roof guardrail according to any one of claims 1-8, and the structure is a unilateral guardrail and comprises a guardrail body and a detachable fixing piece;
the guardrail body is arranged at one side of the car roof close to the counterweight; the guardrail body comprises a plurality of folding plates, and the adjacent folding plates are rotationally connected; one side of each pair of adjacent folding plates is provided with a detachable fixing piece, and the detachable fixing piece can limit the rotation of the folding plates.
10. The structure of a folding roof rail of claim 9, wherein the rail body comprises a first folding plate and a second folding plate, the first folding plate and the second folding plate being connected by a hinge.
11. The folding roof rail structure of claim 10, wherein the hinge is a heavy-duty hinge.
12. The structure of a folding roof rail of claim 9, wherein the folding plates are disposed parallel to a horizontal plane.
13. The structure of claim 9, wherein the removable fixture includes a socket and a latch, the socket being disposed on two adjacent folding plates.
14. The structure of claim 13, wherein the socket includes a plurality of inserts having a plurality of through holes therethrough, and the pins pass through the plurality of through holes.
15. The structure of claim 13, wherein the folding plate is provided with a barrier switch that is triggered when the latch is integrally installed with the socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311792545.6A CN117446615A (en) | 2023-12-25 | 2023-12-25 | Maintenance control method and structure of folding type car roof guardrail |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311792545.6A CN117446615A (en) | 2023-12-25 | 2023-12-25 | Maintenance control method and structure of folding type car roof guardrail |
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| CN117446615A true CN117446615A (en) | 2024-01-26 |
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| CN202311792545.6A Pending CN117446615A (en) | 2023-12-25 | 2023-12-25 | Maintenance control method and structure of folding type car roof guardrail |
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| CN108439115A (en) * | 2018-04-18 | 2018-08-24 | 广州广日电梯工业有限公司 | A kind of machine-roomless lift intelligent and safe examination and repair system and its control method |
| CN108750887A (en) * | 2018-07-16 | 2018-11-06 | 中山市鑫海精密制造科技有限公司 | A kind of elevator car top fence assembly |
| CN208429714U (en) * | 2018-07-17 | 2019-01-25 | 联合通用电梯科技有限公司 | A kind of telescopic car top protective fence containing safe electric switch |
| CN210558703U (en) * | 2019-03-19 | 2020-05-19 | 菱王电梯股份有限公司 | Bolt assembled elevator car top guardrail |
| CN114014118A (en) * | 2021-11-16 | 2022-02-08 | 日立电梯(上海)有限公司 | Elevator car roof safe access control method and system and storage medium |
| CN115258860A (en) * | 2022-07-04 | 2022-11-01 | 上海爱登堡电梯江苏有限公司 | Elevator maintenance box capable of prompting entering of elevator maintenance space safety |
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2023
- 2023-12-25 CN CN202311792545.6A patent/CN117446615A/en active Pending
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| CN202785140U (en) * | 2012-08-22 | 2013-03-13 | 西子奥的斯电梯有限公司 | Safety protection device for working region on top of elevator cage |
| CN203781584U (en) * | 2014-01-24 | 2014-08-20 | 苏州富士电梯有限公司 | Hinge-type carriage top guardrail |
| CN108439115A (en) * | 2018-04-18 | 2018-08-24 | 广州广日电梯工业有限公司 | A kind of machine-roomless lift intelligent and safe examination and repair system and its control method |
| CN108750887A (en) * | 2018-07-16 | 2018-11-06 | 中山市鑫海精密制造科技有限公司 | A kind of elevator car top fence assembly |
| CN208429714U (en) * | 2018-07-17 | 2019-01-25 | 联合通用电梯科技有限公司 | A kind of telescopic car top protective fence containing safe electric switch |
| CN210558703U (en) * | 2019-03-19 | 2020-05-19 | 菱王电梯股份有限公司 | Bolt assembled elevator car top guardrail |
| CN114014118A (en) * | 2021-11-16 | 2022-02-08 | 日立电梯(上海)有限公司 | Elevator car roof safe access control method and system and storage medium |
| CN115258860A (en) * | 2022-07-04 | 2022-11-01 | 上海爱登堡电梯江苏有限公司 | Elevator maintenance box capable of prompting entering of elevator maintenance space safety |
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