Portable foldable self-adaptive high-altitude operation hanging basket

Abstract

The invention provides a portable foldable self-adaptive high-altitude operation hanging basket, and relates to the technical field of hanging baskets. The hanging basket platform comprises two oppositely-arranged middle hanging rods, side hanging rods are arranged on the two sides of each middle hanging rod, a plurality of middle through shafts are arranged between the two middle hanging rods, a plurality of side through shafts are arranged between the two side hanging rods on the same side, and the two sides of each middle through shaft are connected with the side through shafts on the two sides through a plurality of transverse rods. A walking hanging mechanism; the hanging basket platform is connected with the walking hanging mechanism through a plurality of hanging ropes in an up-down moving mode. A counterweight; the balance weight is connected with the walking hanging mechanism in an up-down moving mode through a traction rope, and the middle of the traction rope winds around the middle through shafts. The problems that a traditional simple platform shakes, safety limiting is not available, stability is poor, and safety is very low can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of hanging baskets, and specifically to a portable foldable self-adaptive high-altitude operation hanging basket. Background Art

[0002] At present, most highway bridges adopt the method of prefabricating and then installing beam slabs first, and then forming a continuous beam structure by using the structure of simply supported first and then continuous. When the precast small box girder adopts the simply supported first and then continuous system conversion process, the negative moment prestress is generally set on the top slab of the small box girder for operation on the bridge deck; but when using precast T-beams, the negative moment tension teeth blocks are reserved under the wing slab of the bridge deck, and it is impossible to operate on the bridge deck, resulting in high-altitude operation for the prestressed negative moment.

[0003] For the construction platform of the negative moment prestressed tendons of the traditional precast T-beam simply supported first and then continuous bridge, a lift truck or a simple platform self-made by the construction team is adopted. The lift truck is greatly restricted by the terrain and the height of the bridge, and the mechanical cost is high; while the simple platform self-made by the construction team has insufficient safety performance and does not meet the requirements of the tool-type platform under the current safety situation. Therefore, it is necessary to develop a high-altitude safety operation platform for the negative moment prestress of the precast T-beam bridge simply supported first and then continuous to adapt to the increasing trend of current precast T-beam bridges.

[0004] Specific problems to be solved include: 1. Being light and convenient to carry, reducing the operation cost; 2. Lowering and installing through the reserved wet joint steel bar gap on the bridge deck, overcoming the problem of low installation efficiency from under the bridge for high-altitude bridges, and needing to be foldable to reduce the size; 3. Being able to utilize the installed precast T-beam components to achieve the stability of the platform and improve the safety; 4. Realizing that the platform is folded and lowered and installed into the space between two adjacent T-beams and automatically opens and supports on the T-beam web before people get on; 5. How to achieve horizontal squeezing of the platform against the T-beam web to provide vertical frictional support force and safety measures; 6. Since the platform is designed according to the standard, but if there is a deviation in the horizontal direction of the precast beam installation, how to adjust and use it; 7. How to achieve labor saving and improve efficiency when horizontal displacement and folding removal are required after the operation is completed.

[0005] In summary, developing an operation platform for the prestressed tendons of the precast T-beam simply supported first and then continuous structure has great practical significance for project benefits, efficiency and safety management. Summary of the Invention

[0006] In view of the above-mentioned prior art, the present invention proposes a portable foldable self-adaptive high-altitude operation hanging basket.

[0007] The portable foldable self-adaptive high-altitude operation hanging basket provided by the present invention includes: Basket platform; the basket platform includes two centrally suspended rods arranged oppositely, with side suspended rods provided on both sides of the centrally suspended rods. A number of central through shafts are provided between the two centrally suspended rods, and a number of side through shafts are provided between the two side suspended rods on the same side. The two sides of the central through shaft are connected to the side through shafts on both sides by a number of cross bars, and the two ends of each cross bar are hingedly connected to the central through shaft and the side through shaft respectively. A handle is provided on the top cross bar, and a bottom plate and a limit rope are provided on the bottom cross bar. The bottom plate is connected to the central through shaft by a hinge, and the two ends of the limit rope are respectively connected to the outer ends of the cross bars on both sides. And an obtuse triangle is formed among the limit rope and the cross bars on both sides. In the obtuse triangle, the included angle between the cross bars on both sides is 155 - 175 degrees; Walking hanging mechanism; the basket platform is movably connected up and down to the walking hanging mechanism by a number of suspension ropes; Counterweight; the counterweight is movably connected up and down to the walking hanging mechanism by a traction rope, and the middle part of the traction rope bypasses the number of central through shafts.

[0008] Preferably, vertical support rollers are provided at the top and bottom of the side suspended rods.

[0009] Preferably, a number of horizontal support rollers are provided on the side through shafts at the top and bottom.

[0010] Preferably, the bottom cross bar is a reinforced bar.

[0011] Preferably, a kick board is provided on the bottom plate.

[0012] Preferably, at least three rope through holes are provided along the axial direction of the bottom cross bar. One end of the limit rope is connected to the outer end of the cross bar on one side, and the other end of the limit rope sequentially passes through several rope through holes and is connected to the outer end of the cross bar on the other side.

[0013] Preferably, the walking hanging mechanism includes a portal hanging frame. Walking wheels are provided at the bottoms on both sides of the portal hanging frame, and a braking device is provided on the walking wheels.

[0014] Preferably, its construction method includes the following steps: S1. After assembling the basket platform on the bridge deck, place the basket platform in a folded state; S2. Hang the counterweight and the folded basket platform on the second hoist and the first hoist installed on the walking hanging mechanism respectively, and put the folded basket platform into the space under the T-beam wing plate from the gap of the wet joint reserved bars; S3. Loosen the traction rope of the counterweight so that its weight is applied to the central through shaft. The upward pulling force of the first hoist on the basket platform and the downward pulling force of the counterweight on the basket platform cause the folded basket platform to open and support on the T-beam web; S4. Hang the handle of the hanging basket platform on the reserved bars of the wet joint, and use a safety limit card for limiting to ensure no slippage. Lift the counterweight by the second winch to ensure that its weight is not added to the hanging basket platform, and lock the second winch or place the lifted counterweight on the bridge deck. S5. After the operator fastens the safety belt, step on the cross bar and go down to the bottom plate, check whether there is any deviation in the distance between the webs of the T-beam, and check the hinges and limit ropes of the bottom plate to ensure that under the action of the operator's gravity, the two bottom plates and the limit ropes form a stable large obtuse triangle structure through the hinges. S6. After the construction of one prestressed tendon is completed, start the first winch to bear the weight of the hanging basket platform, and loosen the safety limit card to disengage the handle from the reserved bars of the wet joint. S7. Push the walking hanging mechanism to longitudinally displace along the wet joint, move to the next negative moment prestressed tensioning operation location, and lock the handle. S8. Unlock the handle, start the first winch to lift the hanging basket platform. Under the lifting force of the first winch, the hanging basket platform is folded by the extrusion of the supporting force on the inclined plane of the T-beam wing plate, and the gap of the reserved bars of the bridge wet joint is pulled out. Thus, one operation is completed. S9. Repeat S2 - S8 for the prestressed tendon operation under each wet joint corresponding to each wet joint until all operations are completed.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention provides a portable foldable and self-adaptive high-altitude working hanging basket, which serves as an operating platform for construction workers during the operations of prestressed tendon threading, tensioning, grouting, and anchor sealing under the bridge deck when realizing the structural system conversion of precast T-beams from simply supported to continuous. It can replace the operator to process a simple platform by himself, and overcomes the problems of the simple platform such as shaking, no safety limit, poor stability, and very low safety.

[0016] 2. The present invention adopts hinge connection, pin shaft connecting rods, and supporting rollers to realize the folding, up and down opening and closing, and horizontal displacement of the hanging basket platform; to adapt to the installation deviation of precast beams, supporting rollers installed by screws are provided on the hanging basket platform. By advancing and retracting the screws, it is ensured that the supporting rollers tightly support on the webs of the precast T-beams. The vertical supporting rollers provide vertical bearing capacity and stability for the hanging basket platform through the friction with the beam webs. At the same time, the one-way rollers that can only rotate upward provide the clamping force in the opposite direction when the hanging basket is lifted and folded upward, thus realizing labor-saving and efficient folding; the horizontal supporting rollers realize the longitudinal displacement of the hanging basket platform along the bridge, so as to realize the tensioning operation of multiple negative moment prestresses. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the portable foldable and self-adaptive high-altitude working hanging basket in the embodiment of the present invention.

[0018] Figure 2This is a partial structural schematic diagram of the portable foldable self - adapting high - altitude working basket in the embodiments of the present invention.

[0019] Figure 3 This is a schematic diagram of the portable foldable self - adapting high - altitude working basket in the folded state in the embodiments of the present invention.

[0020] In the figure, 1 is the middle suspension rod; 2 is the side suspension rod; 3 is the middle through - shaft; 4 is the side through - shaft; 5 is the cross - bar; 6 is the handle; 7 is the bottom plate; 8 is the limit rope; 9 is the hinge; 10 is the kick - board; 11 is the rope - passing hole; 12 is the vertical support roller; 13 is the horizontal support roller; 14 is the gantry hanging frame; 15 is the walking wheel; 16 is the first hoist; 17 is the second hoist; 18 is the suspension rope; 19 is the counterweight; 20 is the traction rope; 21 is the wet joint reserved reinforcement; 22 is the safety limit clamp. Specific Embodiments

[0021] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0022] Embodiment: As Figures 1 - 3 shown, a portable foldable self - adapting high - altitude working basket includes: a basket platform; the basket platform includes two relatively arranged middle suspension rods 1, both sides of the middle suspension rod 1 are provided with side suspension rods 2, five middle through - shafts 3 are arranged between the two middle suspension rods 1, five side through - shafts 4 are arranged between the two side suspension rods 2 on the same side, the two ends of the middle through - shaft 3 are connected to the side through - shafts 4 on both sides through cross - bars 5, and both ends of the cross - bar 5 are hingedly connected to the middle through - shaft 3 and the side through - shaft 4 respectively; two handles 6 are symmetrically arranged on the top cross - bar 5, the handle 6 is set as a U - shaped structure and is inversely installed on the cross - bars 5 on both sides, a bottom plate 7 and a limit rope 8 are arranged on the bottom cross - bar 5, the bottom plate 7 is connected to the middle through - shaft 3 through a hinge 9, the limit rope 8 is made of steel wire rope, its two ends are respectively connected to the outer ends of the cross - bars 5 on both sides, and an obtuse - angled triangle is formed among the limit rope 8 and the cross - bars 5 on both sides. In the obtuse - angled triangle, the included angle between the cross - bars 5 on both sides can be 155 - 175 degrees, and the bottom cross - bar 5 is a reinforced rod.

[0023] Furthermore, a kick - board 10 is arranged on the bottom plate 7, five rope - passing holes 11 are arranged along the axial direction of the bottom cross - bar 5, one end of the limit rope 8 is connected to the outer end of the cross - bar 5 on one side, and the other end passes through several rope - passing holes 11 in sequence and is connected to the outer end of the cross - bar 5 on the other side.

[0024] Further, vertical support rollers 12 are provided at both the top and bottom of the side suspension rods 2. The vertical support rollers 12 are set as one-way rollers that can only rotate upward. Two horizontal support rollers 13 are provided on the side through shafts 4 at both the top and bottom. The horizontal support rollers 13 are two-way rollers that can rotate up and down. The vertical support rollers 12 and the horizontal support rollers 13 are both installed and fixed by screws, so that the support length of the rollers can be adjusted to adapt to the construction deviation of the width of the bridge wet joint, ensuring the stability and safety of the hanging basket platform after the bottom plate 7 is opened.

[0025] Among them, the hanging basket platform is made of lightweight pipes to reduce its own weight and facilitate the workers to install the hanging basket platform under the beam body between the T-beam wing plates that have been erected on the bridge deck.

[0026] Further, it also includes a walking hanging mechanism. The walking hanging mechanism includes a portal hanging frame 14. Walking wheels 15 are provided at both the bottom sides of the portal hanging frame 14. Brake devices are provided on the walking wheels 15. Two first hoists 16 and one second hoist 17 are installed on the portal hanging frame 14. The hanging basket platform is connected to the first hoist 16 on the portal hanging frame 14 through two suspension ropes 18. The suspension ropes 18 are made of steel wires.

[0027] Further, it also includes a counterweight 19. The counterweight 19 is connected to the second hoist 17 on the walking hanging mechanism 14 through a towing rope 20. And the middle part of the towing rope 20 bypasses five middle through shafts 3. The towing rope 20 is made of steel wires.

[0028] The construction method of the portable foldable adaptive high-altitude operation hanging basket includes the following steps: S1. After the hanging basket platform is assembled on the bridge deck, place the hanging basket platform in a folded state, as Figure 3 shown; S2. Hang the counterweight 19 and the folded hanging basket platform on the second hoist 17 and the first hoist 16 installed on the walking hanging mechanism respectively, and put the folded hanging basket platform into the space under the T-beam wing plate from the gap of the wet joint reserved bars; S3. Loosen the towing rope 20 of the counterweight 19 so that its weight is applied to the middle through shaft 3. The upward pulling force of the first hoist 16 on the hanging basket platform and the downward pulling force of the counterweight 19 on the hanging basket platform cause the folded hanging basket platform to open and support on the T-beam web; S4. Hang the handle 6 of the hanging basket platform on the wet joint reserved bar 21, and use the safety limit card 22 for limit to ensure that it does not slip off. Lift the counterweight 19 by the second hoist 17 to ensure that its weight is not applied to the hanging basket platform, and lock the second hoist 17; S5. After the operator wears a safety belt, he steps on the crossbar 5 and goes down to the bottom plate 7 to check whether there is any deviation in the distance between the webs of the T-beams and whether the vertical support rollers 12 and the horizontal support rollers 13 are tight against the webs of the T-beams. The degree of tightness is based on the principle that the hanging basket platform is stable and does not shake; check the hinges 9 and the limit ropes 8 of the bottom plate 7 to ensure that under the gravity of the operator, the two bottom plates 7 and the limit ropes 8 form a large obtuse triangle stable structure through the hinges 9, and then realize that when opening downward, the gravity is converted into the vertical friction force of the side suspension rods 2, thereby providing the bearing capacity and stability of the hanging basket platform; when the worker operates the negative bending moment prestressed steel strand on the hanging basket platform, the more force he uses, the more downward construction load he provides, thereby simultaneously increasing the vertical friction force, that is, the bearing capacity, of the hanging basket platform, and the more stable the hanging basket platform is, the higher the safety of the operator is; at this time, the vertical support rollers 12 and the horizontal support rollers 13 are in a non-stressed state; S6, after the construction of one prestressed reinforcement is completed, the horizontal support roller 13 is rotated out to press against the web of the T beam, the vertical support roller 12 is loosened, and the bridge deck is reached. The first hoist 16 is started to bear the weight of the hanging basket platform, and the safety limit card 22 is loosened to separate the handle 6 from the wet joint reserved reinforcement 21; S7, push the walking hanging mechanism to move longitudinally along the wet joint and move to the next negative bending moment prestressing tensioning operation. When the walking hanging mechanism moves, it drives the horizontal support roller 13 to easily achieve the shift, tightens the vertical support roller 12 to ensure the stability of the hanging basket platform, and locks the handle 6; S8, unscrew the vertical support roller 12 to press against the web of the T-beam, loosen the horizontal support roller 13, go up to the bridge deck, unlock the handle 6, start the first hoist 16 to lift the hanging basket platform, the hanging basket platform is squeezed and folded under the lifting force of the first hoist 16 and the vertical support roller 12 along the inclined support force of the T-beam wing plate, and the gap of the wet joint reserved reinforcement 21 is pulled out, and the operation is completed at this point; S9, cycle S2-S8 to perform prestressed tendon work under the wet joint corresponding to each wet joint until all the work is completed.

[0029] In this embodiment, in order to adapt to the negative bending moment prestressed construction aerial work platform in which the prefabricated T-beam is first simply supported and then converted into a continuous structural system, the web of the T-beam is cleverly used to ensure that the hanging basket platform is stably supported on the beam body, thereby ensuring the safety and reliability of the light hanging basket platform during construction operations.

[0030] In addition, the bearing capacity and stability of the hanging basket platform mainly come from the frictional force generated by the compressive stress supported on the web of the T-beam when the hanging basket platform is opened; moreover, since the hanging basket platform is opened downward and the bottom plate 7 is designed with a hinge connection, under the action of construction loads such as the opening of the bottom plate 7 or the self-weight of the operator, the vertical construction load is converted by the bottom plate 7 into a horizontal pressure on the web of the T-beam, and then into frictional force to provide the vertical bearing capacity of the hanging basket platform; at the same time, within the allowable range of the material strength of the hanging basket platform, the bearing capacity, stability and safety of the hanging basket platform are increased in direct proportion to the construction load, realizing the self-adaptation of mechanical properties.

[0031] In addition, the folding of the hanging basket platform utilizes the bottom plate half-hinge connection opening and closing mechanism, so as to realize folding and closing when the winch pulls upward and opening when the counterweight applies force downward; the hanging basket platform adopts a connecting rod structure to realize the folding of the hanging rod and the cross bar. After folding, the thickness of the hanging basket platform meets the spacing of the reserved steel bars for the wet joint of the bridge, ensuring that the hanging basket platform can be installed from the bridge deck to under the wet joint of the bridge.

[0032] In addition, in order to ensure the safe force transmission when the bottom plate hinge is opened, a limit rope 8 is arranged at the bottom of the bottom plate 7 as a limiting measure to ensure that the opening angle of the bottom plate 7 is less than 180 degrees, so as to ensure that the vertical force of the construction load always maintains the pressure on the web of the T-beam when acting on the bottom plate 7.

[0033] In addition, after the hanging basket platform is in place under the T-beam bridge deck, the cross bar 5 can be used as a ladder for people to descend. After the operator hangs the safety belt, they can descend into the hanging basket through the cross bar 5, realizing the implementation of safety protection measures. The operations such as the transfer, installation and removal of the hanging basket platform can be easily completed by 2 workers; the opening and folding of the hanging basket platform perfectly utilize the mechanical principle, so as to achieve the purpose of saving resources, being simple and convenient, improving the operation efficiency and safety under the condition of meeting the functions of the hanging basket.

[0034] The above is only the implementation mode of the present invention, and does not limit the patent scope of the present invention accordingly. All equivalent solutions made by using the content of the specification of the present invention, directly or indirectly applied in other related technical fields, are equally within the patent protection scope of the present invention.

Claims

1. A portable, foldable, self-adaptive aerial work hanging basket, characterized in that: include: A hanging basket platform; the hanging basket platform comprises two middle hanging rods arranged opposite to each other, side hanging rods are arranged on both sides of the middle hanging rods, a plurality of middle through shafts are arranged between the two middle hanging rods, a plurality of side through shafts are arranged between the two side hanging rods on the same side, the two sides of the middle through shaft are connected with the side through shafts on both sides through a plurality of cross rods, and the two ends of the cross rods are respectively hingedly connected with the middle through shaft and the side through shafts; a handle is arranged on the top cross rod, a bottom plate and a limiting rope are arranged on the bottom cross rod, the bottom plate is connected with the middle through shaft through a hinge, the two ends of the limiting rope are respectively connected with the outer ends of the cross rods on both sides, and an obtuse triangle is formed between the limiting rope and the cross rods on both sides, and the angle between the cross rods on both sides in the obtuse triangle is 155-175 degrees; Walking and hanging mechanism; the hanging basket platform is connected to the walking and hanging mechanism through a plurality of hanging ropes so as to be movable up and down; The counterweight is connected to the walking suspension mechanism through a traction rope so as to be movable up and down, and the middle part of the traction rope passes around the plurality of central through shafts.

2. The portable, foldable and adaptive aerial work hanging basket as claimed in claim 1, characterized in that: The top and bottom of the side suspension rod are both provided with vertical support rollers.

3. The portable, foldable and adaptive aerial work hanging basket as claimed in claim 1 or 2, characterized in that: A plurality of horizontal supporting rollers are arranged on the top and bottom side shafts.

4. The portable, foldable and adaptive aerial work hanging basket as claimed in claim 1 or 2, characterized in that: The cross bar at the bottom is a reinforced bar.

5. The portable, foldable and adaptive aerial work hanging basket as claimed in claim 1 or 2, characterized in that: A skirting board is arranged on the bottom plate.

6. The portable, foldable and adaptive aerial work hanging basket as claimed in claim 1 or 2, characterized in that: The bottom cross bar is provided with at least three rope threading holes along its axial direction, one end of the limiting rope is connected to the outer end of the cross bar on one side, and the other end of the limiting rope passes through several rope threading holes in sequence and is connected to the outer end of the cross bar on the other side.

7. The portable, foldable and adaptive aerial work hanging basket as claimed in claim 1 or 2, characterized in that: The walking and hanging mechanism comprises a door-type hanging frame, and the bottoms of both sides of the door-type hanging frame are provided with walking wheels, and the walking wheels are provided with brake devices.

8. The portable, foldable and adaptive aerial work hanging basket as claimed in claim 1 or 2, characterized in that: The construction method includes the following steps: S1. After the hanging basket platform is assembled on the bridge deck, the hanging basket platform is placed in a folded state; S2, hang the counterweight and the folded hanging basket platform on the second hoist and the first hoist installed on the traveling hanging mechanism respectively, and put the folded hanging basket platform into the space under the T-beam wing plate from the gap of the wet joint reserved reinforcement; S3, loosen the traction rope of the counterweight to apply its weight to the central shaft, and the upward pulling force of the first hoist on the hanging basket platform and the downward pulling force of the counterweight on the hanging basket platform make the folded hanging basket platform open and supported on the web of the T beam; S4. Hang the handle of the hanging basket platform on the wet joint reserved reinforcement, use the safety limit card to limit the position to ensure that it does not slip, lift the counterweight by the second winch to ensure that its weight is not added to the hanging basket platform, lock the second winch or lift the counterweight and place it on the bridge deck; S5. After the operator wears a safety belt, he steps on the crossbar and goes down to the bottom plate to check whether there is any deviation in the distance between the webs of the T beams, and the hinges and limit ropes of the bottom plate to ensure that under the gravity of the operator, the hinges form a large obtuse triangle stable structure between the two bottom plates and the limit ropes; S6. After the construction of one prestressed reinforcement is completed, the first winch is started to bear the weight of the hanging basket platform, and the safety limit card is released to separate the handle from the wet joint reserved reinforcement; S7, push the walking hanging mechanism to move longitudinally along the wet joint, move to the next negative bending moment prestressing tensioning operation location, and lock the handle; S8, unlock the handle, start the first winch to lift the hanging basket platform, and the hanging basket platform is squeezed along the inclined support force of the T-beam wing plate under the lifting force of the first winch to achieve folding, and pull out the gap of the bridge wet joint reserved reinforcement, and the operation is completed at this point; S9, cycle S2-S8 to perform prestressed tendon work under the wet joint corresponding to each wet joint until all the work is completed.

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