CN114476892B - Folding portable warning device for elevator maintenance - Google Patents

Folding portable warning device for elevator maintenance Download PDF

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Publication number
CN114476892B
CN114476892B CN202210204127.XA CN202210204127A CN114476892B CN 114476892 B CN114476892 B CN 114476892B CN 202210204127 A CN202210204127 A CN 202210204127A CN 114476892 B CN114476892 B CN 114476892B
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CN
China
Prior art keywords
cavity
piston
warning device
folding portable
elevator maintenance
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CN202210204127.XA
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CN114476892A (en
Inventor
范豫
李自翔
周世军
李原原
戴立方
韩永兴
孔维胜
臧琳
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Henan Special Equipment Inspection Institute
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Henan Special Equipment Inspection Institute
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Publication of CN114476892A publication Critical patent/CN114476892A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0043Devices enhancing safety during maintenance
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B50/00Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies

Abstract

The invention discloses a folding portable warning device for elevator maintenance, which comprises mounting plates which are symmetrically hinged, wherein warning plates are connected to the outer end surfaces of the mounting plates, handles are fixed to the tops of the mounting plates, sinking blocks are connected between the mounting plates, and sucking discs are arranged at the bottoms of the mounting plates; further comprises: the bottom of the mounting plate is provided with a cavity which is communicated with the top of the sucker, and the inner side of the cavity is connected with a first piston; the outer sides of the sinking blocks are symmetrically provided with cross bars, and the cross bars are received in the receiving grooves; a buffer spring is arranged between the warning board and the mounting plate, and a toothed plate is fixed on the inner side of the bottom of the warning board; the side symmetry of mounting panel is provided with the extension barrier. This a folding portable warning device for elevator maintenance can be placed and prevent empting the processing to warning device is stable, can expand the device simultaneously and reach better shielding and warning effect.

Description

Folding portable warning device for elevator maintenance
Technical Field
The invention relates to the technical field of warning devices, in particular to a folding portable warning device for elevator maintenance.
Background
Along with the building of floor is higher and higher, the elevator becomes the essential public facility of high-rise building, when the elevator breaks down and needs to be maintained, generally can put warning device outside the elevator and prevent irrelevant personnel from getting into the elevator in, play the effect of blocking, warning device is folding portable generally, convenient and fast, however current folding portable warning device for elevator maintenance has following problem:
the current folding portable warning device for elevator maintenance is generally directly to strut the back in the in-process of using and places in the elevator outside, can remove at will, is difficult to play the effect of protection, still can occupy the elevator mouth and walk the space, inconvenient resident's daily trip, and receive external force striking time, warning device easily takes place the phenomenon of empting, and then be inconvenient for carrying out firm stable placing and prevent empting the processing to warning device, current folding portable warning device for elevator maintenance simultaneously can not expand the device, has led to shelter from the scope little, can't shelter from with the warning more effectively.
We have therefore proposed a folding portable warning device for elevator maintenance in order to solve the problems presented above.
Disclosure of Invention
The invention aims to provide a folding portable warning device for elevator maintenance, which solves the problems that the existing folding portable warning device for elevator maintenance in the market in the prior art is inconvenient to firmly and stably place the warning device and prevent toppling, and meanwhile, the device is inconvenient to expand to achieve better shielding and warning.
In order to achieve the above purpose, the present invention provides the following technical solutions: a folding portable warning device for elevator maintenance comprises mounting plates which are symmetrically hinged, wherein warning plates are connected to the outer end faces of the mounting plates, handles are fixed to the tops of the mounting plates, sinking blocks are connected between the mounting plates, and sucking discs are arranged at the bottoms of the mounting plates;
further comprises:
the bottom of the mounting plate is provided with a cavity which is communicated with the top of the sucker, and the inner side of the cavity is connected with a first piston;
the transverse rods are symmetrically arranged on the outer sides of the sinking blocks, are received in the receiving grooves, and are arranged on the inner side end surfaces of the mounting plates;
a buffer spring is arranged between the warning board and the mounting plate, a toothed plate is fixed on the inner side of the bottom of the warning board and is connected in the groove, and the groove is formed in the bottom of the outer end face of the mounting plate;
the side symmetry of mounting panel is provided with extends the sideboard, and extends the sideboard sliding connection in the removal groove to the removal groove link up and offer in the side middle part of mounting panel.
Preferably, the articulated department of mounting panel is around being equipped with first stay cord, and the bottom of first stay cord is fixed in the top of heavy piece to the heavy piece constitutes upper and lower active structure through first stay cord, and the tip of the horizontal pole of heavy piece outside installation sets up to triangle-shaped structure moreover, makes the mounting panel expand when using, and articulated department will rotate, and then loosens first stay cord, and after first stay cord was released, the heavy piece will move down to ground, and then can drive the horizontal pole in the outside and move down in step.
Preferably, laminating slip between first piston and the cavity, and the cavity sets up to "Y" font structure to install first spring between first piston and the cavity, the top of first piston is provided with the chute moreover, makes the heavy piece drive the horizontal pole move down to behind the ground, and the horizontal pole tip will dock with the chute at first piston top, and the chute will move under the effect of horizontal pole, and then will make first piston by the outside of diaphragm pulling to the cavity remove, and then makes the inside of cavity form negative pressure.
Preferably, the end of the cross rod is inserted into the chute, and the first piston forms an elastic sliding structure through the chute, the cross rod and the first spring, so that the first piston can compress the first spring after moving in the cavity, when the device is stored, the cross rod can move upwards and be separated from the chute, and at the moment, the first piston can reset under the action of the first spring, so that the next use is facilitated.
Preferably, the warning board forms a buffer structure through a buffer spring, the toothed plate on the warning board is meshed with the toothed roller, the toothed roller is connected to the inside of the groove through an embedded shaft, and the toothed roller forms a reciprocating rotating structure through the toothed plate, so that when the warning device is impacted by external force, the impact force acts on the warning board, the warning board is decomposed through the buffer spring after being stressed, the force is further prevented from being concentrated, the warning board is elastically moved, and the toothed plate at the bottom is driven to synchronously slide in the groove when the warning board moves.
Preferably, the bottom of fluted roller is around being equipped with the second stay cord, and the tip and the second piston of second stay cord are connected to second piston through connection is in the top outside of cavity, installs the second spring between second piston and the cavity moreover for the pinion rack will mesh with the fluted roller after sliding in the recess, and then drives the fluted roller and rotate, will tighten up the second stay cord after the fluted roller rotates, will drive the second piston and move outside in the cavity after the second stay cord tightens up.
Preferably, the second piston forms a reciprocating air extraction structure through the second stay cord and between the second spring and the cavity, and the second piston is attached to the inner wall of the cavity, so that the second piston can compress the second spring after moving outwards in the cavity, and further the negative pressure in the cavity is larger, so that the sucker is more firm and tight to absorb, and the phenomenon that the warning device falls down can be avoided.
Preferably, the top through connection of mounting panel has the dancer roll, and the bottom outside of dancer roll is connected with the dogtooth to on the equidistant terminal surface that extends the block of dogtooth, the dogtooth meshes with the dancer roll mutually moreover, makes behind the dancer roll of rotation mounting panel top, the dancer roll will mesh with the dogtooth in the outside, and then drives the extension block in the removal groove and stretches out to the outside, and then can adjust the usable floor area that shelters from, and then can be suitable for on the position with different spaces.
Preferably, the extension sideboard is opened and closed through dancer roll and dogtooth and is removed in the removal groove, and the removal groove sets up to "H" shape structure for the dancer roll back, the extension sideboard will receive again and can be to the removal groove in, thereby is convenient for accomodate, reduces occupation space.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the folding portable warning device for elevator maintenance, when the folding portable warning device is placed, the mounting plate is unfolded, the hinged position is rotated, the first pull rope is further loosened, the sinking block is moved to be abutted against the ground, so that the whole warning device is stable in gravity center, after the sinking block is moved down to the ground, the transverse rods symmetrically arranged on the outer sides of the sinking block are separated from the storage groove, then the end parts of the transverse rods move down synchronously with the sinking block, the end parts of the transverse rods move downwards and are abutted with the chute on the top of the first piston, the chute is driven by the transverse rods to move, the whole first piston is driven to move outwards in the cavity, the first piston moves outwards, the first spring is compressed, the air in the cavity is in a negative pressure state, the cavity is communicated with the top of the sucker, the sucker is in a negative pressure state, the sucker is firmly adsorbed on the ground, the whole warning device is stably placed outside an elevator, and the warning device is prevented from being moved randomly, and the using effect is prevented;
2. when the warning device is impacted by external force in the use process, the warning board is acted on by the external force and is elastically moved by the compression buffer spring after being stressed, the warning board can drive the toothed plate fixedly arranged at the rear side to synchronously slide in the groove when moving, the toothed plate can be meshed with the toothed roller in the groove after moving in the groove, so that the toothed roller is driven to rotate, the second pull rope below the toothed roller is tightened after rotating, the second piston is driven to move outwards in the cavity after tightening, the second spring is compressed, negative pressure in the cavity is enhanced, and the sucker can be more tightly adsorbed on the ground when being impacted, so that the warning device is prevented from toppling over, and the practical performance of the warning device is enhanced;
3. this a folding portable warning device for elevator maintenance, after placing stably, can adjust warning device's shielding scope as required, rotate the dancer roll at mounting panel top, will mesh with the dogtooth in the outside after the dancer roll rotates, and then drive to extend the sideboard and slide to the outside of shifting the groove to adjust the scope that shields, make maintenance work can be better go on, during accomodate, reverse the dancer roll of adjusting can be with extending the sideboard and withdraw to the shifting groove again in, and then reduce occupation space.
Drawings
FIG. 1 is a schematic diagram of the overall front view of the present invention;
FIG. 2 is a schematic diagram of the overall side cross-sectional structure of the present invention;
FIG. 3 is a schematic side sectional view of the present invention in its overall use;
FIG. 4 is a schematic illustration of the vertical cross-section of the mobile trough and the extended baffle plate of the present invention;
FIG. 5 is an enlarged schematic view of the structure of FIG. 2A according to the present invention;
FIG. 6 is an enlarged schematic view of the structure of FIG. 2B according to the present invention;
FIG. 7 is an enlarged schematic view of the structure of FIG. 3C according to the present invention;
fig. 8 is an enlarged view of the structure of fig. 3D according to the present invention.
In the figure: 1. a mounting plate; 2. a warning board; 3. a handle; 4. a first pull rope; 5. sinking blocks; 6. a cross bar; 7. a storage groove; 8. a suction cup; 9. a cavity; 10. a first piston; 11. a chute; 12. a first spring; 13. a moving groove; 14. a buffer spring; 15. a toothed plate; 16. a groove; 17. a tooth roller; 18. a second pull rope; 19. a second piston; 20. a second spring; 21. an adjusting roller; 22. convex teeth; 23. and extending the baffle.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-8, the present invention provides a technical solution: the utility model provides a folding portable warning device for elevator maintenance, including symmetrical articulated mounting panel 1 that sets up, and be connected with warning sign 2 on the outer terminal surface of mounting panel 1, and the top of mounting panel 1 is fixed with handle 3, and be connected with heavy piece 5 between the mounting panel 1, the bottom of mounting panel 1 is provided with sucking disc 8 simultaneously, as shown in fig. 1-3, at first, carry warning device wholly to the elevator department that needs to maintain through handle 3, then turn away mounting panel 1, make the wholly stable place on ground of device, then heavy piece 5 will with ground butt, thereby stabilize the holistic focus of device, then sucking disc 8 of mounting panel 1 bottom will adsorb with ground, and then place the device outside the elevator steadily, remind the people that pass;
further comprises: the transverse rods 6 are symmetrically arranged on the outer sides of the sinking blocks 5, the transverse rods 6 are received in the receiving grooves 7, the receiving grooves 7 are formed in the inner side end faces of the mounting plates 1, the first pull ropes 4 are wound at the hinging positions of the mounting plates 1, the bottoms of the first pull ropes 4 are fixed on the tops of the sinking blocks 5, the sinking blocks 5 form an up-down movable structure through the first pull ropes 4, the end parts of the transverse rods 6 arranged on the outer sides of the sinking blocks 5 are of triangular structures, as shown in fig. 2-4 and 8, after the mounting plates 1 are turned away, the first pull ropes 4 at the hinging positions are loosened, at the moment, the sinking blocks 5 are lowered due to the action of gravity, the transverse rods 6 are separated from the receiving grooves 7, then the sinking blocks 5 are contacted with the ground, so that the overall stability of the warning device is stabilized, and after the sinking blocks 5 are lowered to the ground, the transverse rods 6 arranged on the outer sides of the sinking blocks are synchronously lowered;
the bottom of the mounting plate 1 is provided with a cavity 9, the cavity 9 is communicated with the top of the suction cup 8, the inner side of the cavity 9 is connected with a first piston 10, the first piston 10 and the cavity 9 are in fit sliding, the cavity 9 is of a Y-shaped structure, a first spring 12 is arranged between the first piston 10 and the cavity 9, the top of the first piston 10 is provided with a chute 11, the end part of the cross rod 6 is spliced with the chute 11, the first piston 10 forms an elastic sliding structure through the chute 11, the cross rod 6 and the first spring 12, as shown in fig. 2-3 and 5, after the cross rod 6 moves downwards to the bottom, the end part of the cross rod is spliced with the chute 11 at the top of the first piston 10, so that the chute 11 is driven by the cross rod 6 to drive the whole first piston 10 to move outwards of the cavity 9, negative pressure is formed in the cavity 9, the suction cup 8 is adsorbed on the ground, and the warning device is prevented from moving at will;
a buffer spring 14 is arranged between the warning board 2 and the mounting plate 1, a toothed plate 15 is fixed on the inner side of the bottom of the warning board 2, the toothed plate 15 is connected in a groove 16, the groove 16 is arranged at the bottom of the outer end face of the mounting plate 1, the warning board 2 forms a buffer structure through the buffer spring 14, the toothed plate 15 on the warning board 2 is meshed with a toothed roller 17, the toothed roller 17 is connected with the inside of the groove 16 in an embedded mode, the toothed roller 17 forms a reciprocating rotating structure through the toothed plate 15, when the warning device is impacted by external force in the use process, as shown in fig. 1-3 and 6-7, force acts on the warning board 2, the warning board 2 compresses the buffer spring 14 after being stressed and then elastically moves, the toothed plate 15 at the bottom is driven to synchronously move in the groove 16 after the movement of the warning board 2, the toothed plate 15 is meshed with the toothed roller 17 in the groove 16 and further drives the toothed roller 17 to rotate;
the bottom of the toothed roller 17 is wound with a second stay rope 18, the end part of the second stay rope 18 is connected with a second piston 19, the second piston 19 is connected to the outer side of the top of the cavity 9 in a penetrating way, a second spring 20 is arranged between the second piston 19 and the cavity 9, the second piston 19 forms a reciprocating air suction structure with the cavity 9 through the second stay rope 18 and the second spring 20, the second piston 19 is attached to the inner wall of the cavity 9, as shown in fig. 2-3 and 5-6, when the toothed roller 17 is driven to rotate, the toothed roller 17 tightens the second stay rope 18 wound at the bottom, the second piston 19 is driven to slide outwards in the cavity 9 after the second stay rope 18 tightens, so that the negative pressure in the cavity 9 is increased, the sucker 8 can be more tightly adsorbed on the ground when impacted, and the phenomenon of toppling is prevented;
the side symmetry of mounting panel 1 is provided with and extends barrier 23, and extend barrier 23 sliding connection in remove groove 13, and remove groove 13 link up and set up in the side middle part of mounting panel 1, the top through connection of mounting panel 1 has dancer roll 21, and the bottom outside of dancer roll 21 is connected with dogtooth 22, and the equidistant terminal surface that is fixed in extension barrier 23 of dogtooth 22, extend barrier 23 and open and shut the removal in remove groove 13 through dancer roll 21 and dogtooth 22, and remove groove 13 and set up to "H" shape structure, as shown in fig. 4 and 7, after warning device wholly is placed with ground stability, need adjust the range of sheltering from, at this moment, rotate the dancer roll 21 at mounting panel 1 top, dancer roll 21 rotates the back and will mesh with the dogtooth 22 in the outside, and then will drive and extend barrier 23 and remove outside at remove groove 13, thereby stretch out and remove groove 13, thereby carry out the regulation of adaptability to warning device's range of sheltering from.
Working principle: when the folding portable warning device for elevator maintenance is used, as shown in fig. 1-8, firstly, the mounting plate 1 is turned away, the first pull rope 4 at the hinged position is loosened, the sinking block 5 is dropped down, the cross rod 6 is separated from the storage groove 7, then the sinking block 5 is contacted with the ground, so that the overall stability of the warning device is stabilized, after the sinking block 5 is moved down to the ground, the cross rod 6 arranged on the outer side of the sinking block 5 synchronously moves down, after the cross rod 6 moves down to the bottom, the end part of the cross rod 6 is spliced with the chute 11 at the top of the first piston 10, so that the chute 11 is driven by the cross rod 6 to drive the whole first piston 10 to move to the outer side of the cavity 9, negative pressure is formed in the cavity 9, the sucker 8 is adsorbed on the ground, the warning device is prevented from moving at will, when the warning device is impacted by external force in the use process, the force will act on the warning board 2, the buffer spring 14 will be compressed after the warning board 2 is stressed, and then the buffer spring 14 will be elastically moved, the toothed plate 15 at the bottom will be driven to move synchronously in the groove 16 after the warning board 2 moves, the toothed plate 15 will mesh with the toothed roller 17 in the groove 16, and then drive the toothed roller 17 to rotate, when the toothed roller 17 is driven to rotate, the toothed roller 17 will tighten the second pull rope 18 wound at the bottom, the second pull rope 18 will drive the second piston 19 to slide outwards in the cavity 9 after tightening, thereby increasing the negative pressure in the cavity 9, so that the sucker 8 can be more tightly adsorbed on the ground when being impacted, and then the phenomenon of toppling is prevented, when the warning device is placed stably with the ground, the shielding range needs to be adjusted, at this time, the adjusting roller 21 at the top of the mounting plate 1 is rotated, the adjusting roller 21 is meshed with the outer convex teeth 22 after rotating, and then the extending baffle 23 is driven to move outwards in the moving groove 13, and then extends out of the moving groove 13, so that the shielding range of the warning device is adjusted adaptively, and a series of works are completed.
In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.

Claims (8)

1. A folding portable warning device for elevator maintenance comprises a mounting plate (1) which is symmetrically hinged, wherein a warning board (2) is connected to the outer end face of the mounting plate (1), a handle (3) is fixed to the top of the mounting plate (1), a sinking block (5) is connected between the mounting plates (1), and a sucking disc (8) is arranged at the bottom of the mounting plate (1);
the hinge part of the mounting plate (1) is wound with a first pull rope (4), the bottom of the first pull rope (4) is fixed at the top of the sinking block (5), the sinking block (5) forms an up-down movable structure through the first pull rope (4), and the end part of a cross rod (6) arranged at the outer side of the sinking block (5) is of a triangular structure;
the method is characterized in that: further comprises:
the bottom of the mounting plate (1) is provided with a cavity (9), the cavity (9) is communicated with the top of the sucker (8), and the inner side of the cavity (9) is connected with a first piston (10);
the outer sides of the sinking blocks (5) are symmetrically provided with cross bars (6), the cross bars (6) are received in the receiving grooves (7), and the receiving grooves (7) are formed in the inner side end surfaces of the mounting plates (1);
a buffer spring (14) is arranged between the warning board (2) and the mounting plate (1), a toothed plate (15) is fixed on the inner side of the bottom of the warning board (2), the toothed plate (15) is connected in a groove (16), and the groove (16) is formed in the bottom of the outer end face of the mounting plate (1);
the side of mounting panel (1) symmetry is provided with extension barrier (23), and extension barrier (23) sliding connection in remove groove (13), and remove groove (13) through set up in the side middle part of mounting panel (1).
2. A folding portable warning device for elevator maintenance according to claim 1, characterized in that: the first piston (10) slides in a fitting manner with the cavity (9), the cavity (9) is of a Y-shaped structure, a first spring (12) is arranged between the first piston (10) and the cavity (9), and a chute (11) is arranged at the top of the first piston (10).
3. A folding portable warning device for elevator maintenance according to claim 2, characterized in that: the end of the cross rod (6) is inserted into the chute (11), and the first piston (10) forms an elastic sliding structure through the chute (11), the cross rod (6) and the first spring (12).
4. A folding portable warning device for elevator maintenance according to claim 1, characterized in that: the warning board (2) forms a buffer structure through a buffer spring (14), a toothed plate (15) on the warning board (2) is meshed with a toothed roller (17), the toothed roller (17) is connected with the inside of the groove (16) through an embedded shaft, and the toothed roller (17) forms a reciprocating rotating structure through the toothed plate (15).
5. The folding portable warning device for elevator maintenance of claim 4, wherein: the bottom of the tooth roller (17) is wound with a second stay cord (18), the end part of the second stay cord (18) is connected with a second piston (19), the second piston (19) is connected to the outer side of the top of the cavity (9) in a penetrating mode, and a second spring (20) is arranged between the second piston (19) and the cavity (9).
6. The folding portable warning device for elevator maintenance of claim 5, wherein: the second piston (19) forms a reciprocating air extraction structure with the cavity (9) through the second stay cord (18) and the second spring (20), and the second piston (19) is attached to the inner wall of the cavity (9).
7. A folding portable warning device for elevator maintenance according to claim 1, characterized in that: the top of mounting panel (1) is connected with dancer roll (21) in a penetrating way, and the bottom outside of dancer roll (21) is connected with dogtooth (22), and dogtooth (22) equidistant are fixed in on the terminal surface of extension barrier (23), and dogtooth (22) meshes with dancer roll (21).
8. The folding portable warning device for elevator maintenance of claim 7, wherein: the extension baffle (23) is opened and closed in the moving groove (13) through the adjusting roller (21) and the convex teeth (22), and the moving groove (13) is of an H-shaped structure.
CN202210204127.XA 2022-03-03 2022-03-03 Folding portable warning device for elevator maintenance Active CN114476892B (en)

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Application Number Priority Date Filing Date Title
CN202210204127.XA CN114476892B (en) 2022-03-03 2022-03-03 Folding portable warning device for elevator maintenance

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Application Number Priority Date Filing Date Title
CN202210204127.XA CN114476892B (en) 2022-03-03 2022-03-03 Folding portable warning device for elevator maintenance

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CN114476892B true CN114476892B (en) 2023-05-26

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Publication number Priority date Publication date Assignee Title
CN114991035A (en) * 2022-06-06 2022-09-02 贺隽 Automatic sign board that receive and releases of highway maintenance or obstacles removing operation

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Publication number Priority date Publication date Assignee Title
CN207618814U (en) * 2017-11-20 2018-07-17 康达电梯有限公司 A kind of novel elevator repair warning sign
CN210528151U (en) * 2019-10-12 2020-05-15 杭州市特种设备检测研究院 Warning device for elevator maintenance
CN212687275U (en) * 2020-08-05 2021-03-12 上海市特种设备监督检验技术研究院 Elevator inspection safety warning device
CN214495299U (en) * 2020-10-12 2021-10-26 徐州恒捷电梯救援服务有限公司 External warning device used in elevator maintenance
CN112277853A (en) * 2020-10-22 2021-01-29 西安汇龙中鼎机械设备有限公司 Anti-collision device with good warning effect for construction machinery
CN213303488U (en) * 2020-11-03 2021-05-28 张家界百龙天梯旅游发展有限公司 Warning sign is used in elevator maintenance
CN214359602U (en) * 2020-12-29 2021-10-08 四川壹佳贰电梯有限公司 Convenient-to-move warning device for elevator maintenance
CN214504817U (en) * 2020-12-30 2021-10-26 新沂伟博科技有限公司 Warning sign is used in elevator maintenance

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