Elevator lifting system and lifting operation method

Abstract

The invention discloses an elevator lifting system and a lifting operation method, comprising a car, an electric winch, a steel wire rope, a wire breakage detection device and a marking device; one end of the steel wire rope is connected to the car, and the other end of the steel wire rope is connected to the electric winch; the wire breakage detection device comprises two movable blocks arranged opposite to each other, the two movable blocks are respectively connected to a driver, and the movable blocks are driven to move by the driver; an arc-shaped groove wall is provided on the movable block, and a plurality of wire breakage sensing units are provided on the groove wall of the arc-shaped groove; when the wire breakage detection device is in a detection state, the two movable blocks are driven by the driver to move to a docking state, the steel wire rope is enclosed by the arc-shaped groove walls on the two movable blocks to form a through hole, and the steel wire rope passes through the through hole; the invention realizes the detection of the steel wire rope by the wire breakage detection device, and during the detection, the wire breakage sensing unit on the wire breakage detection device is used to sense whether there is a wire breakage on the steel wire rope, so that the wire breakage point on the steel wire rope can be found in time, thereby ensuring the safe operation of the elevator.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and in particular to an elevator lifting system and a lifting operation method. Background Art

[0002] Existing elevators usually include a car, a wire rope, a pulley block, and an electric winch. One end of the wire rope is connected to the electric winch, and the other end of the wire rope is connected to the car after passing through the pulley block. The electric winch pulls the wire rope and drives the car to move.

[0003] Among them, the steel wire rope, as a connecting component between the electric winch and the car, is directly related to the safe operation of the elevator. The existing steel wire rope is made of multiple small-diameter steel wires twisted together. During the operation of the elevator, the steel wire rope will have contact and friction with the pulley due to the outer surface, so one or several steel wires on the outer surface of the steel wire rope are most likely to break. After the steel wire on the outer surface of the steel wire rope breaks, since the steel wire itself has a certain elasticity, the end of the steel wire after the break will lose part of the constraint and undergo elastic deformation, thereby warping outward and protruding from the surface of the steel wire rope to form a sharp warped end. The breakage of one or several steel wires in the steel wire rope will affect the overall strength of the steel wire rope, and then directly affect the safe operation of the elevator. Therefore, during the service life of the elevator, it is necessary to regularly inspect the steel wire rope of the elevator to promptly discover and eliminate the safety hazards caused by broken wires to the elevator.

[0004] Currently, inspections of elevator wire ropes mainly rely on manual visual inspections, where inspectors carefully observe the surface of the wire ropes and determine whether there are broken wires. However, manual inspections have the following disadvantages: the wire ropes on existing elevators are relatively long, so manual inspections take a long time, which consumes a lot of energy for inspectors. In addition, inspectors are required to crawl into the elevator shaft, which poses certain safety risks during the inspection process. Summary of the invention

[0005] The purpose of the present invention is to solve the deficiencies in the prior art and to provide an elevator lifting system and a lifting operation method.

[0006] The object of the present invention is achieved through the following technical solution: an elevator lifting system, comprising a car, an electric winch, a wire rope, a wire break detection device, and a marking device; one end of the wire rope is connected to the car, and the other end of the wire rope is connected to the electric winch;

[0007] The broken wire detection device comprises two movable blocks arranged opposite to each other, the two movable blocks are respectively connected to a driver, and the movable blocks are driven to move by the driver; a circular arc groove wall is provided on the movable block, and a plurality of broken wire sensing units are provided on the groove wall of the circular arc groove;

[0008] When the broken wire detection device is in the detection state, the driver drives the two movable blocks to move to the docking state, and the wire rope is surrounded by the arc-shaped groove walls on the two movable blocks to form a through hole, and the wire rope passes through the through hole; when the broken wire sensing unit detects the existence of the warped end, the marking device marks on the wire rope;

[0009] When the broken wire detection device is in a non-detection state, the two movable blocks are separated.

[0010] Preferably, it further comprises a first pulley and a second pulley, the steel wire is wound around the first pulley and the second pulley, and the broken wire detection device and the marking device are arranged between the first pulley and the second pulley.

[0011] Preferably, the broken wire sensing unit comprises an insulating bottom plate, a conductive layer is provided on one side of the insulation, an electrode is provided at each end of the conductive layer in the arc direction, and the electrode is electrically connected to the resistance detection module through a guide; the resistance detection module is connected to the control module;

[0012] When the broken wire detection device is in the detection state, the broken wire sensing units are distributed on the inner side of the through hole in a circular array;

[0013] When the raised end on the wire rope passes through the through hole, the raised end scratches the conductive layer and forms a scratch on the conductive layer, thereby increasing the resistance of the conductive layer; when the resistance change of the conductive layer exceeds the set threshold, the control module determines that there is a raised end on the wire rope.

[0014] Preferably, the conductive layer is copper foil, and the thickness of the copper foil is 35-80 microns.

[0015] Preferably, a buckle body is provided on a side of the insulating bottom plate away from the conductive layer, and a socket for cooperating with the buckle body is provided on the arc-shaped groove wall on the movable block.

[0016] Preferably, the broken wire detection device further comprises a base, the driver is an electric cylinder, the electric cylinder is fixedly arranged on the base, and the telescopic rod on the electric cylinder is connected to the movable block.

[0017] Preferably, the movable block is provided with a guide rod, the base is provided with a guide hole corresponding to the conductor rod, and the guide rod passes through the guide hole.

[0018] Preferably, both ends of the arc-shaped groove wall on the movable block are provided with bell mouths.

[0019] Preferably, the marking device comprises a fixing seat, a paint can is arranged on the fixing seat, a spray head is connected to the paint can, a solenoid valve is arranged between the spray head and the paint can, and the solenoid valve is electrically connected to the control module; the steel wire rope passes under the spray head.

[0020] An elevator lifting operation method, wherein an electric winch is used to drive the car to move up and down; a wire break detection device is used to regularly detect the wire rope;

[0021] During the detection, the driver drives the two movable blocks to move to the docking state, the electric winch drives the car to move up and down, and the wire rope passes through the through hole. The resistance detection module detects the resistance of the conductive layer in real time during the movement.

[0022] When there is a broken wire on the steel wire rope, the warped end of the steel wire rope passes through the through hole, and the warped end passes through the conductive layer and forms a scratch on the conductive layer, so that the resistance of the conductive layer increases; when the resistance change of the conductive layer exceeds the set threshold, the control module determines that there is a warped end on the steel wire rope, and marks the steel wire rope through the marking device;

[0023] When the marking device marks the wire rope, the control module controls the solenoid valve to open, and the solenoid valve closes after the opening time reaches the set time interval. When the solenoid valve is opened, the paint in the paint can is sprayed out through the nozzle and sprayed onto the surface of the wire rope, thereby forming a mark on the wire rope.

[0024] The beneficial effects of the present invention are:

[0025] 1. In the present invention, the wire rope is detected by a broken wire detection device. During the detection, the broken wire sensing unit on the broken wire detection device is used to sense whether there is a broken wire on the wire rope, so that the broken wire point on the wire rope can be found in time, thereby timely eliminating the safety hazards existing on the wire rope and ensuring the safe operation of the elevator.

[0026] 2. The present invention uses a broken wire sensing unit to detect whether there is a broken wire point on the wire rope. Compared with manual detection, it reduces the possibility of false alarms and missed alarms, saves time and effort, reduces labor costs, and does not require maintenance personnel to personally climb into the elevator shaft for inspection, thus avoiding the occurrence of safety accidents.

[0027] 3. The broken wire detection device can switch between a detection state and a non-detection state. When the broken wire detection device is in the non-detection state, the movable blocks can be separated from each other to keep the broken wire sensing unit on the movable block away from the wire rope, thereby avoiding the broken wire sensing unit from contacting the wire rope and causing the broken wire sensing unit to fail, and does not affect the normal operation of the elevator.

[0028] 4. The setting of the marking device can mark the wire rope immediately after the broken wire is found on the wire rope, which makes it convenient for subsequent maintenance personnel to handle the wire rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the present invention.

[0030] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0031] Figure 3 It is a structural schematic diagram of a broken wire detection device.

[0032] Figure 4 This is a structural schematic diagram of the broken wire sensing unit in one direction.

[0033] Figure 5 This is a schematic diagram of the structure of the broken wire sensing unit in another direction.

[0034] Figure 6 It is a cross-sectional view of the broken wire sensing unit.

[0035] Figure 7 It is a top view of the broken wire detection device.

[0036] Figure 8 for Figure 7 Cross-sectional view along the BB direction.

[0037] Fig. 9 for Figure 8 Enlarged view of part D in the middle.

[0038] Fig.10 This is a schematic diagram of a broken wire detection device detecting a steel wire rope.

[0039] Fig.11 for Fig.10 Enlarged view of part D in the middle.

[0040] Fig.12 Schematic diagram of forming scratches on the broken wire sensing unit.

[0041] Fig.13 A schematic diagram of the structure of the marking device.

[0042] Fig.14 It is a connection diagram between the resistance detection module, data acquisition module, control module and solenoid valve.

[0043] In the figure: 1, car, 2, first pulley, 3, second pulley, 4, wire rope, 5, electric winch, 6, counterweight, 8, broken wire detection device, 8-1, base, 8-2, movable block, 8-2a, bell mouth, 8-2b, wire hole, 8-2c, jack, 8-3, driver, 8-4, guide rod, 8-5, broken wire sensing unit, 8-5a, insulating bottom plate, 8-5b, electrode, 8-5c, wire, 8-5d, buckle body, 8-5e, conductive layer, 8-6, resistance detection module, 9, marking device, 9-1, fixed seat, 9-2, paint can, 9-3, solenoid valve, 9-4, nozzle, 10, wire rope, 10a, tilted end, 11, scratch. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0045] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0046] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0047] like Figures 1 to 14 As shown, an elevator lifting system includes a car 1, an electric winch 5, a wire rope 4, a wire break detection device 8, and a marking device 9; one end of the wire rope 4 is connected to the car 1, and the other end of the wire rope 4 is connected to the electric winch 5;

[0048] The broken wire detection device 8 comprises two movable blocks 8-2 arranged opposite to each other, the two movable blocks 8-2 are respectively connected to the driver 8-3, and the movable blocks 8-2 are driven to move by the driver 8-3; the movable blocks 8-2 are provided with arc-shaped groove walls, and the groove walls of the arc-shaped grooves are provided with a plurality of broken wire sensing units 8-5;

[0049] When the broken wire detection device 8 is in the detection state, the driver 8-3 drives the two movable blocks 8-2 to move to the docking state, and the wire rope 4 is surrounded by the arc-shaped groove walls on the two movable blocks 8-2 to form a through hole, and the wire rope 4 passes through the through hole; when the broken wire sensing unit 8-5 detects the existence of the warped end 10a, the marking device 9 marks the wire rope 4;

[0050] When the broken wire detection device 8 is in a non-detection state, the two movable blocks 8-2 are separated.

[0051] In the present invention, the wire rope 4 is detected by the broken wire detection device 8. During the detection, the broken wire sensing unit 8-5 on the broken wire detection device 8 is used to sense whether there is a broken wire on the wire rope 4, so that the broken wire point on the wire rope 4 can be found in time, so as to timely eliminate the safety hazards existing on the wire rope 4 and ensure the safe operation of the elevator. Since the present invention uses the broken wire sensing unit 8-5 to detect whether there is a broken wire point on the wire rope 4, compared with manual detection, the possibility of false alarm and missed alarm is reduced, and time and labor are saved, and labor costs are reduced. There is no need for maintenance personnel to personally climb into the elevator shaft for inspection, thereby avoiding the occurrence of safety accidents. The broken wire detection device 8 can be switched between the detection state and the non-detection state. When the broken wire detection device 8 is in the non-detection state, the movable blocks 8-2 can be separated from each other to make the broken wire sensing unit 8-5 on the movable block 8-2 away from the wire rope 4, which not only avoids the broken wire sensing unit 8-5 from contacting the wire rope 4 and causing the broken wire sensing unit 8-5 to fail, but also does not affect the normal operation of the elevator. The setting of the marking device 9 can mark the steel wire rope 4 immediately after a broken wire is found on the steel wire rope 4, so that subsequent maintenance personnel can handle the steel wire rope 4 conveniently.

[0052] The present invention further comprises a first pulley 2 and a second pulley 3 , over which the steel wire is wound, and a wire breakage detection device 8 and a marking device 9 are arranged between the first pulley 2 and the second pulley 3 .

[0053] The broken wire sensing unit 8-5 includes an insulating bottom plate 8-5a, a conductive layer 8-5e is provided on one side of the insulation, and an electrode 8-5b is provided at both ends of the arc direction of the conductive layer 8-5e, and the electrode 8-5b is electrically connected to the resistance detection module 8-6 through a guide; the resistance detection module 8-6 is connected to the control module. All the resistance detection modules 8-6 are electrically connected to the data acquisition module, and the data acquisition module is electrically connected to the control module; the data detected by the resistance detection module 8-6 is first sent to the data acquisition module, and then summarized by the data acquisition module and sent to the control module.

[0054] When the broken wire detection device 8 is in the detection state, the broken wire sensing units 8-5 are distributed on the inner side of the through hole in a circular array; when the raised end 10a on the wire rope 4 passes through the through hole, the raised end 10a passes through the conductive layer 8-5e and forms a scratch 11 on the conductive layer 8-5e, thereby increasing the resistance of the conductive layer 8-5e; when the resistance change of the conductive layer 8-5e exceeds the set threshold, the control module determines that there is a raised end 10a on the wire rope 4.

[0055] The insulating bottom plate 8-5a is in an arc shape as a whole, and its curvature is consistent with the curvature of the arc-shaped groove wall, so that it can fit with the arc-shaped groove wall when installed. The resistance detection module 8-6 can detect the resistance of the conductive layer 8-5e in real time. During the detection process, when there is no raised end 10a on the steel wire rope 4, the steel wire rope 4 will not contact the conductive layer 8-5e on the broken wire sensing unit 8-5 when passing through the broken wire detection device 8, and thus will not leave a scratch 11 on the conductive layer 8-5e. At this time, the resistance of the conductive layer 8-5e is relatively small; when there is a broken wire point on the steel wire rope 4, the raised end 10a at the broken wire position will scratch the conductive layer 8-5e when passing through the broken wire detection device 8, thereby leaving a scratch 11 (such as 11) on the conductive layer 8-5e that crosses both ends of the conductive layer 8-5e and has a certain depth. Fig.12 As shown in FIG. 1 , the scratch 11 is located between the two electrodes 8-5b on the conductive layer 8-5e. The thickness of the material at the location of the scratch 11 on the conductive layer 8-5e is small, resulting in a reduction in the cross-sectional area of ​​the conductive layer 8-5e at that location. According to Ohm's law, the resistance of a conductor is inversely proportional to the cross-sectional area of ​​the conductor, that is, the smaller the cross-sectional area of ​​the conductor, the greater the resistance of the conductor. The existence of the scratch 11 significantly increases the resistance of the conductive layer 8-5e. This phenomenon is also called the "bottleneck effect". Just as a liquid will encounter greater resistance when passing through a narrow bottleneck, the resistance of the conductive layer 8-5e is significantly increased under the effect of the bottleneck effect. When the resistance change of the conductive layer 8-5e exceeds the set threshold, the control module determines that there is a raised end 10a on the steel wire rope 4, that is, there is a broken wire point on the steel wire rope 4. Through the above detection method, the broken wire point on the steel wire rope 4 can be detected more sensitively, effectively reducing the possibility of false alarms and missed alarms.

[0056] Among them, the resistance detection module 8-6 and the broken wire sensing unit 8-5 are connected in a one-to-one correspondence. When the wire rope 4 is detected, the broken wire sensing unit 8-5 corresponds to different circumferential directions of the wire rope 4. When the resistance detection module 8-6 detects that the resistance of the broken wire sensing unit 8-5 increases significantly, the corresponding direction of the broken wire sensing unit 8-5 on the wire rope 4 is the direction of the position of the broken wire on the wire rope 4; therefore, in addition to detecting whether there is a broken wire point on the wire rope 4, the present invention can also detect the direction of the broken wire position on the wire rope 4, so that in the subsequent processing process, the maintenance personnel can quickly find the broken wire point on the wire rope 4 according to the direction information.

[0057] In this embodiment, the conductive layer 8-5e is copper foil, and the thickness of the copper foil is 35-80 microns.

[0058] A buckle body 8-5d is provided on the side of the insulating bottom plate 8-5a away from the conductive layer 8-5e, and a socket 8-2c for matching with the buckle body 8-5d is provided on the arc-shaped groove wall of the movable block 8-2. The insulating bottom plate 8-5a is connected to the socket 8-2c on the arc-shaped groove wall through the buckle body 8-5d to achieve installation and fixation of the insulating bottom plate 8-5a, and the buckle body 8-5d is connected to the socket 8-2c in a buckle connection manner. This installation method facilitates the installation and replacement of the insulating induction component.

[0059] The broken wire detection device 8 also includes a base 8-1, and the driver 8-3 is an electric cylinder, which is fixedly arranged on the base 8-1, and the telescopic rod on the electric cylinder is connected to the movable block 8-2. A guide rod 8-4 is arranged on the movable block 8-2, and a guide hole corresponding to the wire 8-5c rod is arranged on the base 8-1, and the guide rod 8-4 passes through the guide hole. The movable block 8-2 is driven to move by the electric cylinder, so as to realize the switching of the broken wire detection device 8 between the detection state and the non-detection state.

[0060] Both ends of the arc-shaped groove wall on the movable block 8-2 are provided with bell mouths 8-2a.

[0061] Furthermore, the marking device 9 includes a fixed seat 9-1, a paint can 9-2 is provided on the fixed seat 9-1, a nozzle 9-4 is connected to the paint can 9-2, a solenoid valve 9-3 is provided between the nozzle 9-4 and the paint can 9-2, and the solenoid valve 9-3 is electrically connected to the control module; the wire rope 4 passes under the nozzle 9-4.

[0062] The paint tank 9-2 is filled with paint, and the solenoid valve 9-3 is used to control the spraying of the paint. When the broken wire sensing unit 8-5 detects the existence of the warped end 10a, the control module controls the solenoid valve 9-3 to open, and the solenoid valve 9-3 is closed again after the opening time reaches the set time interval; when the solenoid valve 9-3 is opened, the paint in the paint tank 9-2 will be sprayed through the nozzle and sprayed toward the wire rope 4, thereby forming a mark on the surface of the wire rope 4; in the subsequent processing process, the existence of the mark allows maintenance personnel to quickly find the broken wire point on the wire rope 4.

[0063] An elevator lifting operation method, the specific method is as follows:

[0064] The car 1 is driven up and down by the electric winch 5; the wire rope 4 is regularly inspected by the wire breakage detection device 8;

[0065] During the detection, the two movable blocks 8-2 are driven to move to the docking state through the driver 8-3, and the car 1 is driven to move up and down through the electric winch 5, and the wire rope 4 passes through the through hole. The wire rope 4 is in the process of moving; the resistance of the conductive layer 8-5e is detected in real time through the resistance detection module 8-6;

[0066] When there is a broken wire on the steel wire rope 4, the warped end 10a on the steel wire rope 4 passes through the through hole, and the warped end 10a passes through the conductive layer 8-5e and forms a scratch 11 on the conductive layer 8-5e, so that the resistance of the conductive layer 8-5e increases; when the resistance change of the conductive layer 8-5e exceeds the set threshold, the control module determines that there is a warped end 10a on the steel wire rope 4, and marks the steel wire rope 4 through the marking device 9;

[0067] When the marking device 9 marks the steel wire rope 4, the control module controls the solenoid valve 9-3 to open, and the solenoid valve 9-3 closes after the opening time reaches the set time interval; when the solenoid valve 9-3 is opened, the paint in the paint can 9-2 is sprayed out through the nozzle 9-4 and sprayed onto the surface of the steel wire rope 4, thereby forming a mark on the steel wire rope 4.

[0068] When a wire breakage point is detected on the wire rope 4, the elevator needs to be shut down after the entire detection process is completed, and the maintenance personnel are notified to further inspect and process the wire rope 4. The mark of the marking device 9 on the wire rope 4 enables the maintenance personnel to quickly find the wire breakage point on the wire rope 4, and the maintenance personnel further check the wire breakage on the wire rope 4 and formulate a maintenance plan, thereby ensuring the safe lifting and lowering operation of the elevator.

[0069] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present invention.

Claims

1. An elevator lifting system, characterized in that: It includes a car, an electric winch, a wire rope, a wire breakage detection device, and a marking device; one end of the wire rope is connected to the car, and the other end of the wire rope is connected to the electric winch; The broken wire detection device comprises two movable blocks arranged opposite to each other, the two movable blocks are respectively connected to a driver, and the movable blocks are driven to move by the driver; a circular arc groove wall is provided on the movable block, and a plurality of broken wire sensing units are provided on the groove wall of the circular arc groove; When the broken wire detection device is in the detection state, the driver drives the two movable blocks to move to the docking state, and the wire rope is surrounded by the arc-shaped groove walls on the two movable blocks to form a through hole, and the wire rope passes through the through hole; When the broken wire sensing unit detects the presence of the warped end, the marking device marks the wire rope; When the broken wire detection device is in a non-detection state, the two movable blocks are separated; The broken wire sensing unit includes an insulating bottom plate, a conductive layer is provided on one side of the insulating bottom plate, and an electrode is provided at both ends of the conductive layer in the arc direction, and the electrode is electrically connected to the resistance detection module through a guide; the resistance detection module is connected to the broken wire sensing unit one by one; the resistance detection module is connected to the control module; when the broken wire detection device is in the detection state, the broken wire sensing units are distributed on the inner side of the through hole in a circular array; when the warped end of the wire rope passes through the through hole, the warped end passes through the conductive layer and forms a scratch on the conductive layer, so that the resistance of the conductive layer increases; when the resistance change of the conductive layer exceeds the set threshold, the control module determines that there is a warped end on the wire rope; the conductive layer is copper foil, and the thickness of the copper foil is 35-80 microns; a buckle body is provided on the side of the insulating bottom plate away from the conductive layer, and a socket for matching with the buckle body is provided on the arc-shaped groove wall on the movable block; the broken wire detection device also includes a base, and the driver is an electric cylinder, which is fixedly arranged on the base, and the telescopic rod on the electric cylinder is connected to the movable block; The marking device comprises a fixing seat, a paint can is arranged on the fixing seat, a spray head is connected to the paint can, a solenoid valve is arranged between the spray head and the paint can, and the solenoid valve is electrically connected to the control module; a steel wire rope passes under the spray head; The lifting and lowering operation method of the elevator lifting system drives the car to move up and down by an electric winch; the wire rope is regularly detected by a broken wire detection device; During the detection, the driver drives the two movable blocks to move to the docking state, the electric winch drives the car to move up and down, and the wire rope passes through the through hole. The resistance detection module detects the resistance of the conductive layer in real time during the movement. When there is a broken wire on the steel wire rope, the warped end of the steel wire rope passes through the through hole, and the warped end passes through the conductive layer and forms a scratch on the conductive layer, so that the resistance of the conductive layer increases; when the resistance change of the conductive layer exceeds the set threshold, the control module determines that there is a warped end on the steel wire rope, and marks the steel wire rope through the marking device; When the marking device marks the wire rope, the control module controls the solenoid valve to open, and the solenoid valve closes after the opening time reaches the set time interval; when the solenoid valve is opened, the paint in the paint can is sprayed out through the nozzle and sprayed onto the surface of the wire rope, thereby forming a mark on the wire rope.

2. An elevator lifting system according to claim 1, characterized in that: It also includes a first pulley and a second pulley, the steel wire is wound around the first pulley and the second pulley, and a broken wire detection device and a marking device are arranged between the first pulley and the second pulley.

3. An elevator lifting system according to claim 1, characterized in that: The movable block is provided with a guide rod, the base is provided with a guide hole corresponding to the conductor rod, and the guide rod passes through the guide hole.

4. An elevator lifting system according to claim 1, characterized in that: Both ends of the arc-shaped groove wall on the movable block are provided with bell mouths.

Images