CN115554628B - Safety rope fixing structure for building construction - Google Patents
Safety rope fixing structure for building construction Download PDFInfo
- Publication number
- CN115554628B CN115554628B CN202211125965.4A CN202211125965A CN115554628B CN 115554628 B CN115554628 B CN 115554628B CN 202211125965 A CN202211125965 A CN 202211125965A CN 115554628 B CN115554628 B CN 115554628B
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- Prior art keywords
- frame
- piece
- base
- building
- safety rope
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Classifications
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
- A62B35/0043—Lifelines, lanyards, and anchors therefore
- A62B35/0068—Anchors
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
- A62B35/0043—Lifelines, lanyards, and anchors therefore
- A62B35/0075—Details of ropes or similar equipment, e.g. between the secured person and the lifeline or anchor
Abstract
The invention discloses a safety rope fixing structure for building construction, which comprises a base, an anchoring piece and an active electromagnetic mechanism, wherein an assembly frame is arranged on the upper side of the base, and a winding mechanism and a braking mechanism are sequentially arranged on the upper side of the assembly frame; a sliding groove is formed in the base, and a friction mechanism positioned at the lower side of the braking mechanism is installed in the sliding groove; the active electromagnetic mechanism is fixed on the ground of a building and is positioned at the lower sides of the braking mechanism and the friction mechanism. This application is provided with anchor assembly and emergent locking frame in the inside of device, and the anchor assembly is pre-buried in the inside of building, when using, with emergent locking frame with the base assemble can, the installation is simple to anchor assembly and emergent locking frame constituteed reinforced structure, compare in the equipment of device and building, more firm.
Description
Technical Field
The invention relates to the technical field of construction safety, in particular to a safety rope fixing structure for building construction.
Background
The safety rope is one of important safety equipment in building construction operation, and the safety rope with the length of 2 meters is 2 meters in general, and also has the lengths of 2.5 meters, 3 meters, 5 meters, 10 meters and 15 meters, and the safety rope with the length of more than 5 meters is also used as a lifting rope; when the safety rope is used, the top end of the safety rope needs to be well fixed, so that the problem of falling off during use is avoided.
Through retrieval, chinese patent (publication No. CN 109467017B) discloses a safety rope winding device and a use method thereof, the safety rope winding device comprises a bottom plate, a winding device and a guiding device for guiding a safety rope which is wound out of the winding device are arranged on the bottom plate, the winding device comprises support plates which are fixed on the bottom plate and are symmetrically arranged left and right, a winding rope wheel is hinged between the two support plates, the safety rope is wound on the winding rope wheel, and a cam is fixed on a rotating shaft on the left side of the winding rope wheel.
In the prior art, the mode and the structure of equipment are comparatively single when the equipment in the safety rope, when the security problem appears, can not handle in the first time to the connection structure of safety rope when using, needs to have the characteristics that be convenient for assemble and security are high, in order to ensure constructor's safety.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a safety rope fixing structure for building construction.
In order to achieve the above purpose, the present invention provides the following technical solutions: a safety rope fixing structure for building construction comprises a base, an anchoring piece and an active electromagnetic mechanism;
the upper side of the base is provided with an assembly frame, the upper side of the assembly frame is provided with a winding mechanism and a braking mechanism in sequence, the base is in threaded connection with a fixed building structure in a building, and the winding mechanism, the limiting frame and the braking mechanism are fixed;
a sliding groove is formed in the base, and a friction mechanism positioned at the lower side of the braking mechanism is installed in the sliding groove;
the active electromagnetic mechanism is fixed on the ground of a building and is positioned at the lower sides of the braking mechanism and the friction mechanism; the output end of the friction mechanism and the braking mechanism moves to one side far away from the chute based on the active electromagnetic mechanism;
an emergency locking frame is arranged between the anchoring piece and the assembly frame, and when the base moves, the emergency locking frame emergency reinforces the device and transmits rescue information.
Further, a limiting frame and a limiting roller are respectively arranged at two sides, close to the braking mechanism, of the inside of the sliding groove;
the limit frame comprises a group of first roller bodies, the limit roller comprises two groups of second roller bodies which are vertically distributed, and one end, far away from the winding mechanism, of the base is provided with a guide roller.
Further, the emergency locking frame comprises a fixing frame, the top end of the fixing frame is fixedly connected with the side face of the assembly frame, the bottom end of the fixing frame is rotatably connected with a rotating frame, and the bottom end of the rotating frame is rotatably connected with a connecting frame connected with an anchoring piece;
during normal use, namely the emergency locking frame does not reinforce the base, and the included angle between the rotating frame and the fixed frame is 55-25 degrees.
Further, the emergency locking frame further comprises a first infrared module, a second infrared module and a transmitting module;
at least one group of first infrared modules are arranged at the top end of the inside of the fixing frame;
at least one group of second infrared modules are arranged at the top end of the rotating frame, and in normal use, the second infrared modules and the first infrared modules are distributed in a dislocation mode based on an included angle between the rotating frame and the fixing frame;
the transmitting module is arranged in the emergency locking frame; after the first infrared module is aligned with the second infrared module, the transmitting module works and transmits rescue information to the receiving end;
the receiving end at least comprises a control host positioned in the project part.
Further, the friction mechanism comprises a friction plate arranged in the sliding groove, at least one group of first elastic pieces are arranged between the lower surface of the friction plate and the sliding groove, and at least one group of first adsorption columns are arranged on one side, close to the first elastic pieces, of the lower surface of the friction plate;
when the active electromagnetic mechanism works, the first adsorption column limits the friction plate to one side far away from the sliding groove through compressing the first elastic piece.
Further, the braking mechanism comprises a frame body connected with the base, a first electromagnetic adsorption piece is arranged in the top end of the frame body, and a pressing piece is arranged at the top end of the interior of the frame body;
at least one group of second elastic pieces are arranged between the upper surface of the lower pressing piece and the frame body, and at least one group of second adsorption columns are arranged on one side, close to the second elastic pieces, of the upper surface of the lower pressing piece;
when the driving electromagnetic mechanism works, the second adsorption column limits the pressing piece to one side far away from the sliding groove through compressing the second elastic piece.
Further, the upper surface of the friction plate and the lower surface of the hold-down are both provided with anti-slip structures.
Further, the braking mechanism further comprises a connecting end and an electrical end, the connecting end is connected with the base, and an electrical connecting hole for supplying power to the first electromagnetic adsorption piece is formed in the lower surface of the connecting end;
the electrical end is arranged at the lower side of the connecting end, and a plurality of third elastic pieces are arranged between the lower surface of the electrical end and the base; the plurality of third elastic pieces are used for limiting the electric end to move in the vertical direction;
the lower surface of the electrical end is provided with an adsorption piece; when the active electromagnetic mechanism is started, the electric end of the absorption part is assembled with the connecting end by stretching the third elastic part.
Further, the method for using the safety rope fixing structure comprises the following steps:
step one: embedding an anchoring piece in the ground of a building, and assembling the emergency locking frame and the anchoring piece when the emergency locking frame is used;
step two: assembling the top end of the emergency locking frame with the assembling frame, distributing the first infrared module and the second infrared module in a staggered manner, and simultaneously screwing the base with a fixed building structure in a building;
step three: the driving electromagnetic mechanism is arranged on the ground and is arranged at the lower sides of the braking mechanism and the friction mechanism;
step four: starting an active electromagnetic mechanism, adsorbing a friction plate in the friction mechanism downwards, assembling an electrical end and a connecting end in the brake mechanism, and then adsorbing a pressing piece upwards;
step five: the safety rope sequentially passes through the limiting frame, the position between the braking mechanism and the friction mechanism, the limiting roller and the guide roller for use.
Compared with the prior art, the invention has the following beneficial effects:
according to the device, the anchoring piece and the emergency locking frame are arranged in the device, the anchoring piece is embedded in the building, when the device is used, the emergency locking frame and the base are assembled, the installation is simple, and the reinforcing structure formed by the anchoring piece and the emergency locking frame is firmer compared with the assembly of the device and the building;
when looseness occurs between the base and the building, the emergency locking frame can strengthen the base for the second time and send rescue information, so that constructors can be rescued in time, and the safety of the device can be improved;
on the other hand, through brake mechanism and friction mechanism, can appear not hard up the back at the base, carry out emergency braking to the safety rope, avoid the safety rope because the sudden acceleration leads to the problem of winding mechanism damage to restrict the rolling of safety rope.
Drawings
FIG. 1 is a schematic structural view of a safety rope fixing structure for building construction;
FIG. 2 is a partial side view of the emergency lock shelf of the present invention;
FIG. 3 is a partial cross-sectional view of the assembly rack of the present invention;
FIG. 4 is a partial cross-sectional view of the brake mechanism of the present invention;
FIG. 5 is an enlarged view of the portion A of FIG. 4 in accordance with the present invention;
1. a base; 2. an anchor; 3. an active electromagnetic mechanism; 4. assembling a frame; 5. a winding mechanism; 6. a limiting frame; 7. a braking mechanism; 8. an emergency locking frame; 9. a chute; 10. a friction mechanism; 11. a limit roller; 12. a guide roller; 81. a fixing frame; 82. a rotating frame; 83. a connecting frame; 84. a first infrared module; 85. a second infrared module; 101. a friction plate; 102. a first adsorption column; 103. a first elastic member; 71. a frame body; 72. a first electromagnetic absorber; 73. a second elastic member; 74. a pressing piece; 75. a second adsorption column; 76. a connection end; 77. an electrical terminal; 78. an absorbing member; 79. and a third elastic member.
Detailed Description
Referring to fig. 1 to 5, a safety rope fixing structure for construction includes a base 1, an anchor 2, and an active electromagnetic mechanism 3;
the upper side of the base 1 is provided with an assembly frame 4, the upper side of the assembly frame 4 is provided with a winding mechanism 5 and a braking mechanism 7 in sequence, the base 1 is in threaded connection with a fixed building structure in a building, and the winding mechanism 5, a limiting frame 6 and the braking mechanism 7 are fixed;
a chute 9 is arranged in the base 1, and a friction mechanism 10 positioned at the lower side of the braking mechanism 7 is arranged in the chute 9;
the driving electromagnetic mechanism 3 is fixed on the ground of a building and is positioned at the lower sides of the braking mechanism 7 and the friction mechanism 10; the output ends of the friction mechanism 10 and the braking mechanism 7 move to the side far away from the chute 9 based on the driving electromagnetic mechanism 3; the safety rope passes through the brake mechanism 7 and the friction mechanism 10 after being unfolded;
the anchoring member 2 comprises a steel bar frame, a connecting piece positioned on the outer side of a building is arranged at the top end of the steel bar frame, an emergency locking frame 8 is arranged between the anchoring member 2 and the assembly frame 4, and when the base 1 moves, the emergency locking frame 8 emergency reinforces the device and transmits rescue information.
Referring to fig. 2, the emergency locking frame 8 includes a fixing frame 81, the top end of the fixing frame 81 is fixedly connected with the side surface of the assembly frame 4, and the bottom end of the fixing frame 81 is rotatably connected with a rotating frame 82, and the bottom end of the rotating frame 82 is rotatably connected with a connecting frame 83 connected with the anchoring member 2;
in normal use, the angle between the turret 82 and the holder 81 is 55-25 °, preferably 45 °.
Further, the emergency locking rack 8 further comprises two groups of first infrared modules 84, a second infrared module 85 and a group of transmitting modules;
two groups of first infrared modules 84 are symmetrically arranged at the top end of the inside of the fixing frame 81;
the two groups of second infrared modules 85 are symmetrically arranged at the top end of the rotating frame 82 and correspond to the two groups of first infrared modules 84 one by one, and in normal use, the second infrared modules 85 and the first infrared modules 84 are distributed in a dislocation mode based on an included angle between the rotating frame 82 and the fixed frame 81;
the transmitting module is arranged in the emergency locking frame 8; after the two groups of first infrared modules 84 are aligned with the corresponding second infrared modules 85, the transmitting modules work and transmit rescue information to the receiving end;
the receiving end comprises a control host positioned in the project part and a plurality of mobile ends, wherein the mobile ends are controlled by different team responsible persons respectively; when the rescue message is received, the nearest team is rescued at the first time.
Referring to fig. 3, a limit frame 6 and a limit roller 11 are respectively arranged at two sides of the inside of the chute 9, which are close to the brake mechanism 7;
the limiting frame 6 comprises a group of first roller bodies, the limiting roller 11 comprises two groups of second roller bodies which are vertically distributed, and a guide roller 12 is arranged at one end of the base 1, which is far away from the winding mechanism 5;
in use, the safety line passes between the underside of the first roller body and the two sets of second roller bodies in sequence and passes around the upper side of the guide roller 12.
The friction mechanism 10 comprises a friction plate 101 arranged in the chute 9, two groups of first elastic pieces 103 are arranged between the lower surface of the friction plate 101 and the chute 9, and two groups of first adsorption columns 102 are arranged on one side, close to the first elastic pieces 103, of the lower surface of the friction plate 101;
when the active electromagnetic mechanism 3 works, the first adsorption column 102 limits the friction plate 101 to the side far away from the chute 9 by compressing the first elastic piece 103.
Referring to fig. 4, the brake mechanism 7 includes a frame 71 connected to the base 1, a first electromagnetic adsorption member 72 is installed inside the top end of the frame 71, and a pressing member 74 is provided at the inner top end of the frame 71;
two groups of second elastic members 73 are arranged between the upper surface of the lower pressing member 74 and the frame 71, and two groups of second adsorption columns 75 are arranged on one side, close to the second elastic members 73, of the upper surface of the lower pressing member 74;
when the driving electromagnetic mechanism 3 works, the second adsorption column 75 limits the hold-down piece 74 to the side far away from the chute 9 by compressing the second elastic piece 73.
The upper surface of the friction plate 101 and the lower surface of the hold-down 74 are both provided with anti-slip structures, preferably anti-slip structures are anti-slip patterns, and two sets of anti-slip patterns in the friction plate 101 and the hold-down 74 are distributed in a staggered manner, so that the friction force between the friction plate 101 and the safety rope is improved when the friction plate contacts the safety rope.
Referring to fig. 5, the brake mechanism 7 further includes a connection end 76 and an electrical end 77, the connection end 76 is connected with the base 1, and an electrical connection hole for supplying power to the first electromagnetic adsorption member 72 is provided on a lower surface of the connection end 76;
the electrical end 77 is disposed at the lower side of the connection end 76, and a plurality of third elastic members 79 are installed between the lower surface of the electrical end 77 and the base 1; the third elastic members 79 are used for limiting the movement of the electrical end 77 in the vertical direction;
the lower surface of the electrical end 77 is provided with an adsorption piece 78, and the upper surface of the electrical end 77 is provided with an embedded end corresponding to the electrical connection hole; when the active electromagnetic mechanism 3 is started, the absorbing member 78 assembles the embedded end and the electrical connection hole by stretching the third elastic member 79 by the electrical end 77.
Working principle:
embedding an anchoring part 2 in the ground of a building, welding a steel bar frame in the anchoring part 2 with steel bars in the ground of the building and reserving steel bar heads to the upper side of the ground when the anchoring part is embedded, welding a connecting piece in the anchoring part 2 with the steel bar heads of the steel bar frame when the anchoring part is used, then assembling a connecting frame 83 in an emergency locking frame 8 with the connecting piece, bending a gap between a rotating frame 82 and a fixing frame 81 by 45 degrees, distributing a first infrared module 84 and a second infrared module 85 in a staggered manner, and assembling the fixing frame 81 with an assembling frame 4;
then the base 1 is screwed with a fixed building structure in a building;
the active electromagnetic mechanism 3 is arranged on the ground and is arranged at the lower sides of the braking mechanism 7 and the friction mechanism 10;
starting the active electromagnetic mechanism 3, adsorbing the friction plate 101 in the friction mechanism 10 downwards, assembling the electric end 77 and the connecting end 76 in the brake mechanism 7, and then adsorbing the hold-down piece 74 upwards;
the safety rope sequentially passes through the spacing frame 6, the brake mechanism 7, the friction mechanism 10, the spacing roller 11 and the guide roller 12 for use;
when the base 1 moves with the fixed building, the active electromagnetic mechanism 3 is dislocated with the braking mechanism 7 and the friction mechanism 10; after the electric end 77 in the braking mechanism 7 is misplaced with the active electromagnetic mechanism 3, the electric end 77 is separated from the connecting end 76 under the drive of the third elastic member 79, and the first electromagnetic absorption member 72 is powered off;
after the first electromagnetic adsorption member 72 is powered off, the second elastic member 73 presses the pressing member 74 downward; meanwhile, the first adsorption column 102 in the friction mechanism 10 breaks the adsorption relation with the active electromagnetic mechanism 3, the friction plate 101 is jacked up by the first elastic piece 103, and the safety rope is braked by being matched with the hold-down piece 74;
and after the base 1 is disconnected from the fixed building component, the emergency locking frame 8 is driven by the base 1, the included angle between the inner rotating frame 82 and the fixed frame 81 disappears, the first infrared module 84 and the second infrared module 85 are aligned, and rescue information is sent while the base 1 is emergently fixed.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present invention are intended to be considered as protecting the scope of the present template.
Claims (3)
1. The utility model provides a safety rope fixed knot constructs for construction, includes base (1), anchor assembly (2) and initiative electromagnetic mechanism (3), its characterized in that:
an assembly frame (4) is arranged on the upper side of the base (1), and a winding mechanism (5) and a braking mechanism (7) are sequentially arranged on the upper side of the assembly frame (4);
a sliding groove (9) is formed in the base (1), and a friction mechanism (10) positioned at the lower side of the braking mechanism (7) is installed in the sliding groove (9);
the active electromagnetic mechanism (3) is fixed on the ground of a building and is positioned at the lower sides of the braking mechanism (7) and the friction mechanism (10);
an emergency locking frame (8) is arranged between the anchoring piece (2) and the assembling frame (4);
the base (1) is in threaded connection with a fixed building structure in a building, and a safety rope passes through the space between the braking mechanism (7) and the friction mechanism (10);
the friction mechanism (10) comprises a friction plate (101) arranged in the sliding groove (9), at least one group of first elastic pieces (103) are arranged between the lower surface of the friction plate (101) and the sliding groove (9), and at least one group of first adsorption columns (102) are arranged on one side, close to the first elastic pieces (103), of the lower surface of the friction plate (101);
the braking mechanism (7) comprises a frame body (71) connected with the base (1), a first electromagnetic absorption part (72) is arranged in the top end of the frame body (71), and a pressing piece (74) is arranged at the top end of the inside of the frame body (71);
at least one group of second elastic pieces (73) are arranged between the upper surface of the lower pressing piece (74) and the frame body (71), and at least one group of second adsorption columns (75) are arranged on one side, close to the second elastic pieces (73), of the upper surface of the lower pressing piece (74);
the braking mechanism (7) comprises:
the connecting end (76) is connected with the base (1);
the electrical end (77), the electrical end (77) is arranged at the lower side of the connecting end (76), and a plurality of third elastic members (79) and adsorption members (78) are arranged between the lower surface of the electrical end (77) and the base (1);
the electrical end (77) is electrically connected with the connecting end (76) based on a third elastic member (79);
when the active electromagnetic mechanism works, the first adsorption column limits the friction plate to one side far away from the sliding groove by compressing the first elastic piece, the second adsorption column limits the pressing piece to one side far away from the sliding groove by compressing the second elastic piece, an electric connection hole for supplying power to the first electromagnetic adsorption piece is formed in the lower surface of the connection end, and an embedded end corresponding to the electric connection hole is formed in the upper surface of the electric end; when the active electromagnetic mechanism is started, the absorption part enables the electric end to be assembled with the electric connection hole by stretching the third elastic piece;
after the electrical end in the braking mechanism is misplaced with the active electromagnetic mechanism, the electrical end is separated from the connecting end under the drive of the third elastic piece, the first electromagnetic adsorption piece is powered off, and after the first electromagnetic adsorption piece is powered off, the second elastic piece presses the pressing piece downwards; meanwhile, a first adsorption column in the friction mechanism breaks the adsorption relation with the active electromagnetic mechanism, the friction plate is jacked up by the first elastic piece, and the safety rope is braked by matching with the pressing piece;
the emergency locking frame (8) comprises a fixing frame (81), the top end of the fixing frame (81) is fixedly connected with the side face of the assembly frame (4), the bottom end of the fixing frame (81) is rotationally connected with a rotating frame (82), and the bottom end of the rotating frame (82) is rotationally connected with a connecting frame (83) connected with the anchoring piece (2);
the emergency locking rack (8) comprises:
a first infrared module (84), at least one group of first infrared module (84) is installed at the top end of the inside of the fixing frame (81);
the second infrared modules (85) are arranged at the top ends of the rotating frames (82), the included angle between each second infrared module (85) and each first infrared module (84) is 55-25 degrees, and the second infrared modules (85) and the corresponding first infrared modules (84) are positioned on the same vertical surface;
the transmitting module is arranged in the emergency locking frame (8), and transmits rescue information after the first infrared module (84) is aligned with the second infrared module (85);
the anchoring piece comprises a steel bar frame, a connecting piece positioned at the outer side of the building is arranged at the top end of the steel bar frame, and the steel bar frame in the anchoring piece is welded with steel bars in the ground of the building.
2. The safety rope fixing structure for building construction according to claim 1, wherein a limit frame (6) and a limit roller (11) are respectively arranged at two sides, close to the brake mechanism (7), inside the chute (9);
the safety rope also moves based on the distribution positions of the limit frame (6) and the limit roller (11).
3. The safety rope fixing structure for construction according to claim 1, wherein the upper surface of the friction plate (101) and the lower surface of the hold-down piece (74) are both provided with an anti-slip structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211125965.4A CN115554628B (en) | 2022-09-16 | 2022-09-16 | Safety rope fixing structure for building construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211125965.4A CN115554628B (en) | 2022-09-16 | 2022-09-16 | Safety rope fixing structure for building construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115554628A CN115554628A (en) | 2023-01-03 |
| CN115554628B true CN115554628B (en) | 2023-07-21 |
Family
ID=84740386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211125965.4A Active CN115554628B (en) | 2022-09-16 | 2022-09-16 | Safety rope fixing structure for building construction |
Country Status (1)
| Country | Link |
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| CN (1) | CN115554628B (en) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4703831A (en) * | 1986-06-04 | 1987-11-03 | Forest Safety Products, Inc. | Fire escape apparatus for use in multi-story buildings and method of escape |
| JPH07155387A (en) * | 1993-12-03 | 1995-06-20 | Sanwa Shutter Corp | Escape door for extrication to ground |
| CN2740216Y (en) * | 2004-02-26 | 2005-11-16 | 张岩 | Emergent safety rope for preventing accident |
| CN2855451Y (en) * | 2005-12-27 | 2007-01-10 | 宋晓杰 | Self-loading emergency lifesaving device for high building |
| KR100845340B1 (en) * | 2007-02-07 | 2008-07-10 | 정채균 | A drop controller of emergency-escape-rope |
| CN104989745B (en) * | 2015-07-07 | 2017-05-10 | 中国电建集团成都勘测设计研究院有限公司 | Low-torque protection torque transmission structure and low-torque protection opening instrument |
| CN106437463A (en) * | 2016-09-12 | 2017-02-22 | 王廷森 | Window guard with antitheft and lifesaving function |
| CN107337105A (en) * | 2017-08-08 | 2017-11-10 | 无锡宝宏船舶机械有限公司 | Gantry crane with maintenance channel |
| CN110306856B (en) * | 2019-05-13 | 2021-09-03 | 杭州欣亿广告有限公司 | Mobile communication base station |
| CN111362092B (en) * | 2020-04-03 | 2021-03-30 | 赛奥智能电梯（苏州）有限公司 | Passenger elevator with emergency braking function |
| CN212773396U (en) * | 2020-06-15 | 2021-03-23 | 深圳市京城文化传媒有限公司 | Overhead trackless mobile operation hanging basket |
| CN114159708B (en) * | 2021-12-16 | 2022-09-27 | 纪志明 | Communication tower with anti-falling device |
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2022
- 2022-09-16 CN CN202211125965.4A patent/CN115554628B/en active Active
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