CN210239093U - Anti-falling structure attached to lifting scaffold - Google Patents
Anti-falling structure attached to lifting scaffold Download PDFInfo
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- CN210239093U CN210239093U CN201920980377.6U CN201920980377U CN210239093U CN 210239093 U CN210239093 U CN 210239093U CN 201920980377 U CN201920980377 U CN 201920980377U CN 210239093 U CN210239093 U CN 210239093U
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- 230000007704 transition Effects 0.000 claims abstract description 17
- 230000033001 locomotion Effects 0.000 claims abstract description 9
- 230000002265 prevention Effects 0.000 claims description 15
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 12
- 238000005303 weighing Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- 230000000737 periodic effect Effects 0.000 description 1
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Abstract
Anti-falling structure of attached lifting scaffold. On a lever type structure which can be stably connected with an attached lifting scaffold body and the middle part of which is a hinged point, one side of the hinged point is provided with a control arm, and the extension part of the control arm can be connected/matched with a lifting structure of an attached lifting scaffold; the other side of the hinged point is an operating arm, the extension part of the operating arm is provided with a transition structure and is connected with an anti-falling pin which is provided with an elastic reset structure and can do telescopic motion through the transition structure, and the anti-falling pin in the extending state can be inserted into a clamping structure in the anti-falling structure which is directly or indirectly fixed on a building object to be matched with the anti-falling clamp. The anti-falling structure can simultaneously have the functions of active type anti-falling and passive type anti-falling, and the safety of construction is ensured and improved by the ground.
Description
Technical Field
The utility model relates to an attached lifting scaffold's of unsettled operation anti-falling structure.
Background
High-rise and super high-rise buildings have become widespread in cities. At present high-rise and super high-rise building's construction has mostly adopted the unsettled lifting scaffold (adhering to lifting scaffold promptly) of controlling through crowd's machine to replace traditional full height to set up and fall to the ground fixed scaffold mode construction, does not exceed 5 stories high adhering to lifting scaffold promptly through the installation, and along with building floor's increase, the scaffold is unsettled to rise the construction one by one thereupon. The construction of the attached lifting scaffold replaces the original suspension operation of erecting a scaffold frame body with the full height and the floor height by a group machine operation mode of suspending and lifting a frame body with the height of 4-5 layers, when a lifting system controlled by a group machine operates, once individual machine positions in the lifting system fail and stop operating, the weight of the machine positions and even the whole attached raw rubber scaffold is gradually concentrated to the failed machine position due to the fact that the machine positions around the lifting system still operate normally, the whole attached lifting scaffold collapses and falls until the limit borne by the scaffold is exceeded, and the whole attached lifting scaffold collapses and falls due to chain reaction, so that serious accidents of serious losses of personnel and property of machine people are caused. This has occurred more than once. The safety protection system for the attachment of the lifting scaffolding, and in particular the prevention of its collapse and fall, has therefore always been a critical and important component thereof. The state has also issued for this purpose such as CECS 373: 2014 technical standard and regulation/specification required to be executed, namely 'lifting and synchronous control system application technical specification attached to lifting scaffold', JGJ202-2010 'construction tool type scaffold safety technical specification', JGJ59-2011 'construction safety inspection standard', and JGJ 160-2016 'construction site mechanical equipment inspection technical specification'.
Through careful analysis and research on collapse and falling of the attached lifting scaffold, the vast majority of anti-falling accidents happen in the descending stage of group machine control according to statistics. This is because, during the lowering process, once an individual machine position fails and stops operating, the electric chain of the surrounding hoisting machine continues to release the chain to drive the group machine downward, and the chain of the hoisting machine of the failed machine position stops, which causes the adjacent machine positions to gradually spread to farther machine positions and even causes the weight of the whole piece of attached lifting scaffold to gradually concentrate to the failed machine position until the bearing limit of the failed machine position is exceeded, and the falling and collapse occur; when the group machine is operated to ascend, even if a single machine position fails and stops operating, the electric loop chains of the elevators around the single machine position are continuously tightened and lifted upwards, so that the load of the single failed machine position only in the ascending group machine attached with the lifting scaffold is borne, and the load can be gradually dispersed from the adjacent machine positions to the farther machine positions, so that the attached lifting scaffold rarely has accidents in the lifting operation stage.
In order to solve the problem of collapse and fall of attached lifting scaffolds, some corresponding anti-falling devices/structures have been reported and/or used. These current attached lifting scaffold fall arrest systems can be broadly divided into two broad categories: the impact type anti-falling system can be divided into a speed type anti-falling system and a top bracing type anti-falling system. For example, impact fall arrest systems include vertical and horizontal components in withstanding the impact of an object, wherein the horizontal component can cause the fall arrest member to deform by collapsing, and the horizontal component is a detrimental component that can cause the falling object and the fall arrest member to separate directly, directly affecting the fall arrest effectiveness and even causing the fall arrest system to fail completely. At the moment of falling, the anti-falling component is in arc-shaped direct contact with the frame body from the side surface, but the contact point of the anti-falling component cannot be predicted, so that the falling distance is long and can reach more than 150mm due to long span in the anti-falling structure.
A typical representative of velocity-type fall arrest systems is a pendulum pin fall arrest device. The structure of the device comprises a swinging needle which is provided with a return spring and can swing back and forth and is connected with a shaft seat fixed on a guide seat, and the guide seat is matched with a guide rail part sliding sleeve. Under the normal low-speed running state, the connecting rod in the guide rail part is matched with the pendulum needle in the motion range to push the pendulum needle to do periodic reciprocating swing, so that the guide rail part continuously and smoothly passes through the guide seat. When the guide rail part falls down rapidly, the swing needle does not complete a swing period and resets, and the other connecting rod enters the swing range of the swing needle, so that the swing needle cannot rebound to reset to clamp the guide rail, and the aim of preventing falling is fulfilled.
The top-supporting anti-falling device works by utilizing a ratchet-pawl principle. The falling prevention teeth fixed on the guide rail are equivalent to a ratchet wheel with infinite diameter, the falling prevention rod fixed on the device is equivalent to a pawl, and the falling prevention rod is connected with a hoisting chain of the elevator. When the device is in normal operation, the device does not work, and the scaffold can pass through the device smoothly; when the hoisting chain is broken or the load of the hoisting machine disappears due to other reasons, and the scaffold begins to fall down, the anti-falling device is activated, and the anti-falling rod props against the anti-falling teeth to prevent the scaffold from falling.
The anti-falling principle of the friction type anti-falling system is that when a falling accident occurs, the gravity disappears to enable a pressure spring in the structure to downwards push a mechanical arm, the mechanical arm pushes a movable block of an oblique cone to wedge between a contraction body and an anti-falling suspender, and the wedge is more and more tight, so that instant braking is achieved, and the falling is prevented from continuing.
Therefore, the common characteristics and problems of the prior anti-falling systems/structures are that the anti-falling action is started after falling, and the working process and principle need to enable the anti-falling component to be in motion contact with a falling object from the side surface when falling and falling, and directly bear the impact force of the falling object to realize anti-falling.
In terms of fall prevention, fall prevention can be divided into passive fall prevention and active fall prevention. The passive falling prevention is that the falling object is prevented from continuously falling after the falling occurs. And the active anti-falling process is to eliminate the danger of falling accidents at the hidden danger stage of the seedling head or the precursor when the seedling head or the precursor of falling occurs but the actual falling does not really start to occur. Obviously, the active anti-falling has more important significance for guaranteeing the safety of construction.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an adhere to anti-falling structure of lift scaffold can have the initiative simultaneously and prevent weighing down with the function of preventing weighing down passively, especially its initiative prevents weighing down the function, can fundamentally solve the collapse problem of falling that adheres to lift scaffold at present.
The utility model discloses an anti-falling structure of an attached lifting scaffold, the basic structure is on a lever type structure which can be stably connected with an attached lifting scaffold body and the middle part of which is a hinge point, one side of the hinge point is a control arm, and the extension part of the control arm can be connected/matched with a lifting structure of an attached lifting scaffold; the other side of the hinged point is an operating arm, the extension part of the operating arm is provided with a transition structure and is connected with an anti-falling pin which is provided with an elastic reset structure and can do telescopic motion through the transition structure, and the anti-falling pin in the extending state can be inserted into a clamping structure in the anti-falling structure which is directly or indirectly fixed on a building object to be matched with the anti-falling clamp.
The meaning that the hinge point described in the above structure is located at the midpoint of the lever-type structure does not mean that the hinge point must be located at the midpoint of 1/2 in the length direction of the lever-type structure, but allows it to be located at any suitable position on the lever-type structure between the connection/engagement portion of the elevator hoisting structure to which the elevator scaffold is attached and the connection portion of the transition structure. Moreover, if the mode that the length of the control arm between the hinge point and the connecting/matching part of the lifting and lifting structure attached to the scaffold of the elevator is smaller than the unequal length of the control arm between the hinge point and the connecting part of the transition structure is further adopted, the sensitivity of the operation of the transition structure and the anti-falling pin when the anti-falling action is started can be further favorably improved.
On the basis of the basic structure, the lever type structure adopts a turning structure with a break angle in the middle part, and can comprise a right angle or other turning structures in proper angle forms, so that the space occupied by the anti-falling structure is favorably reduced. At this time, the hinge point can be arranged at the turning part where the folding angle is located.
In the anti-falling structure attached to the lifting scaffold, a further preferred mode is that the transition structure and the anti-falling pin capable of doing telescopic motion are integrated into a whole structure, so that the reliability of the anti-falling effect is further improved and enhanced. For the attached lifting scaffold working in the open air and under the severe working condition environments of dusty sand and stones and the like, the structure is simple, so that the occurrence of faults is favorably reduced, and the working reliability of the attached lifting scaffold is improved.
In the above structure, the elastic reset structure provided in cooperation with the retractable anti-falling pin may adopt a spring structure in a suitable form, such as a compression type or an extension type, which is commonly used at present, according to the actual situation. For example, in one embodiment a compression type spring is used.
The utility model discloses the theory of operation and process that adhere to lift scaffold and prevent structure are of above-mentioned form are, because the utility model discloses in the above-mentioned prevent weighing down the structure the control arm of lever type structure is to keep being connected/complex with lift hoisting structure, consequently in the normal operating process, no matter is ascending or descends, and lift hoisting structure is all keeping ascending promotion pulling force throughout to the control arm that adheres to lift scaffold and this prevent weighing down the structure to through this lever structure, make its control arm drive through transition structure and prevent weighing down the round pin and act as opposition the return movement of contracting of elasticity reset structure's elastic force makes prevent weighing down the round pin and do not do the cooperation of preventing that mutual card hangs with the card string structure that directly or indirectly is fixed in on the building object, has guaranteed the normal lift operation of adhering to lift scaffold. In the descending process, when a certain machine position stops running due to a fault, the lifting structures such as an electric loop chain of the lifting mechanism still continue descending, so that the lifting structures lose upward lifting force to the control arms attached to the lifting scaffold and the anti-falling structure and are loosened, the control arms drive the anti-falling pins to lose the counter acting force to the elastic force of the elastic resetting structure, at the moment, the elastic force of the elastic resetting structure pushes the anti-falling pins to rapidly extend outwards to be removed, the anti-falling pins are inserted into the clamping and hanging structures in the anti-falling structure directly or indirectly fixed on a building object and enter an anti-falling clamping and hanging matching state, so that the gravity gradually concentrated by other machine positions can be transmitted to the building object, and the machine position with the fault is prevented from independently bearing; meanwhile, after the fault machine position stops running, the machine positions around the fault machine position can also stop running, the anti-falling pins of the anti-falling structures on the machine positions respectively generate the same action, and the gravity borne by the anti-falling pins is respectively transmitted to the building object, so that all the gravity which possibly causes collapse and fall is dispersed to the building object, and the condition that the fault machine position is concentrated on bearing is avoided. Therefore, the falling accident can be eliminated and prevented at the stage of the hidden danger of the head or the precursor of the falling accident when the falling accident is not actually generated, and the falling accident can be effectively avoided in time. On the other hand, even collapse and fall and take place soon, the utility model discloses above-mentioned prevent weighing down structure is owing to the structure is simple and direct, and the control arm action of lever type structure is rapid, and the experimental result shows that even the actual distance of falling when realizing passively preventing weighing down can be less than 42mm, also far is less than the 150mm requirement that industry standard attached lift operation safety protection platform for construction stipulates, has ensured construction safety effectively.
Therefore, the utility model discloses above-mentioned prevent weighing down theory of operation and process that adheres to lift scaffold and prevent weighing down structure, can only take place at the actual falling at present, and still must require when preventing weighing down that the friction formula that contacts with the junk prevents weighing down system and impact type anti-falling system all are different completely, but before the actual falling takes place through taking up the position that the prevention falls in advance, will fall the prevention and eliminate the first stage of seedling before its actual emergence, consequently prevent weighing down effectually, even when preventing passively, its effective anti-falling distance also is showing and is being short in the standard of regulation at present, construction safety has effectively been ensured.
The present invention will be described in further detail with reference to the following detailed description of embodiments of the invention, which are illustrated in the accompanying drawings. This should not be understood as limiting the scope of the above-described subject matter of the present invention to the following examples only. Various substitutions and alterations according to the general technical knowledge and conventional means in the field are included in the scope of the present invention without departing from the technical idea of the present invention.
Drawings
Fig. 1 is a schematic view of the anti-falling structure of the attached lifting scaffold of the present invention.
Detailed Description
As shown in fig. 1, the anti-falling structure of the attached lifting scaffold of the present invention is a lever type structure 3 which can be stably connected to the attached lifting scaffold body and has a hinge point 4 at the middle part thereof provided with a hinge structure in a conventional manner, wherein one side of the hinge point 4 is a control arm 2, and an extension part thereof (usually, the end part thereof) can be connected/matched with a lifting structure 1 (such as a lifting hook of an electric loop chain of a conventional lifter) attached to a lifting scaffold; the other side of the hinge point 4 is an operating arm 5, the extending part (usually at the end or near end) of which is provided with a transition structure 6 in the form of a connecting rod or the like, and the transition structure 6 is connected with a falling-preventing pin 8 which is provided with an elastic reset structure 7 in the appropriate form such as a compression spring or the like and can do telescopic motion, and the falling-preventing pin (8) in the extending state can be inserted into a clamping structure 9 such as a clamping hole or the like in a falling-preventing structure 10 directly or indirectly fixed on a building object 11 to do falling-preventing clamping and hanging matching. The lever type structure 3 is a turning structure with a right angle or other suitable angle folding angle in the middle, the hinge point 4 is arranged at the turning position where the folding angle is located, and the length of the hinge point 4 to the control arm 2 between the connection/matching parts of the lifting structure 1 attached to the lifter scaffold is smaller than the length of the hinge point 4 to the control arm 5 between the connection parts of the transition structure 6. The transition structure 6 and the anti-falling pin 8 which can do telescopic motion are an integral rod-shaped structure.
Claims (5)
1. Adhere to lift scaffold's anti-falling structure, characterized by can stabilize and be connected and the middle part is on lever type structure (3) of pin joint (4) with adhering to the lift scaffold support body, one side of pin joint (4) is control arm (2), its extension can be connected/cooperate with lift hoisting structure (1) that adhere to lift scaffold: the other side of the hinge point (4) is an operating arm (5), the extension part of the operating arm is provided with a transition structure (6) and is connected with a falling prevention pin (8) which is provided with an elastic reset structure (7) and can do telescopic motion through the transition structure (6), and the falling prevention pin (8) in the extending state can be inserted into a clamping and hanging structure (9) in a falling prevention structure (10) which is directly or indirectly fixed on a building object (11) to be matched with falling prevention clamping and hanging.
2. The anti-falling structure attached to the lifting scaffold of claim 1, wherein the lever-type structure (3) is a turning structure with a break angle in the middle, and the hinge point (4) is arranged at the turning position of the break angle.
3. The fall arrest structure for an attached lifting scaffold according to claim 1 or 2, characterized in that in said lever type structure (3) the length of the articulation point (4) from the control arm (2) between the attachment/engagement points of the lifting structure (1) to which the lifting scaffold is attached is smaller than the length of the articulation point (4) from the control arm (5) between the attachment points of said transition structure (6).
4. The fall arrest structure for an attached lifting scaffold according to claim 1 or 2, characterized in that the transition structure (6) is an integral unit with the telescopically movable fall arrest pin (8).
5. The fall arrest structure for an attached lifting scaffold according to claim 1 or 2, characterized in that said resilient return structure (7) is a compression type spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920980377.6U CN210239093U (en) | 2019-06-27 | 2019-06-27 | Anti-falling structure attached to lifting scaffold |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920980377.6U CN210239093U (en) | 2019-06-27 | 2019-06-27 | Anti-falling structure attached to lifting scaffold |
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| Publication Number | Publication Date |
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| CN210239093U true CN210239093U (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920980377.6U Withdrawn - After Issue CN210239093U (en) | 2019-06-27 | 2019-06-27 | Anti-falling structure attached to lifting scaffold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173104A (en) * | 2019-06-27 | 2019-08-27 | 苏泉云 | The anti-falling structure of attached lifting scaffold |
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2019
- 2019-06-27 CN CN201920980377.6U patent/CN210239093U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173104A (en) * | 2019-06-27 | 2019-08-27 | 苏泉云 | The anti-falling structure of attached lifting scaffold |
| CN110173104B (en) * | 2019-06-27 | 2024-02-06 | 苏泉云 | Anti-falling structure attached with lifting scaffold |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Yibin Xulong Energy Saving Technology Co.,Ltd.|Yibin Shunhui Construction Machinery Co.,Ltd. Assignor: SICHUAN HUASHAN CONSTRUCTION Co.,Ltd.|Su Maobing|Su Quanyun|Su Siyue Contract record no.: X2021510000018 Denomination of utility model: Anti falling structure attached with lifting scaffold Granted publication date: 20200403 License type: Common License Record date: 20210611 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200403 Effective date of abandoning: 20240206 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200403 Effective date of abandoning: 20240206 |