A mobile scaffold

Abstract

The present application relates to the field of attached lifting scaffold, disclose a kind of attached lifting scaffold, including suspension bridge system, suspension bridge system includes several layers of suspension bridge mechanism and several vertical setting vertical rods, several vertical rods are vertically connected to several layers of suspension bridge mechanism, each layer of suspension bridge mechanism includes two symmetrically arranged suspension bridge units, each suspension bridge unit includes first steel wire rope, limiting piece and sequentially hinged fixed connecting plate, first suspension bridge frame and second suspension bridge frame, the distance of the symmetry axis of two suspension bridge units from far to near with fixed connecting plate, first suspension bridge frame and second suspension bridge frame, two symmetrically arranged second suspension bridge frame end portions are detachably connected, fixed connecting plate and vertical rod are fixedly connected, first steel wire rope connects vertical rod and first suspension bridge frame close to the end of second suspension bridge frame, limiting piece can limit the relative rotation of first suspension bridge frame and second suspension bridge frame. To solve the problem that when the length of suspension bridge frame is too long, it is difficult to pull up with steel wire rope.

Description

Technical Field

[0001] The invention relates to the field of attached lifting scaffolds, in particular to an attached lifting scaffold. Background Art

[0002] Attached lifting scaffolding is a scaffolding that relies on its own lifting system and can climb layer by layer with the building structure. In order to ensure the smooth operation of the frame, Figure 1 As shown, at the intersection of the tower crane's jib and the frame, the walkway plate is hingedly connected to a fixed connecting plate 210 using a movable walkway plate. The movable walkway plate is also called a suspension bridge 220. The end of the suspension bridge 220 away from the fixed connecting plate 210 is connected to a first steel wire rope 250. The other end of the first steel wire rope 250 is connected to a span-end vertical pole 402. The span-end vertical pole 402, the first steel wire rope 250 and the suspension bridge 220 form a triangle. Before the attached lifting scaffold is lifted, the operator pulls the two first steel wire ropes 250 to flip and pull up the two suspension bridges 220 respectively. The two suspension bridges 220 flip and open to both sides. After the suspension bridges 220 are erected, they are tied to the vertical poles with wire to prevent the suspension bridges 220 from colliding with the tower crane's jib. After being lifted into place, the suspension bridge 220 is restored to a horizontal level and fixed with bolts to prevent the walkway plate from being disconnected for a long time and causing deformation of the frame.

[0003] According to the "Safety Technical Regulations for Attached Lifting Scaffolds in Construction", the frame step distance should not be greater than 2m, that is, the height difference between the upper and lower walkway boards should not be greater than 2m. In some cases, due to construction conditions, the tower crane is too close to the main structure of the building. The length of the suspension bridge 220 needs to be able to span the three auxiliary arms of the tower crane at the same time. Due to the frame step distance restriction, the height of the connection point between the first steel wire rope 250 and the span end upright 402 relative to the suspension bridge 220 should not be greater than 2m. The longer the suspension bridge 220 is, The heavier the suspension bridge 220 is, the smaller the angle between the first steel wire rope 250 and the suspension bridge 220 is, the smaller the vertical component of the force used by the workers to pull the suspension bridge 220 is, and the more difficult it is to pull up the suspension bridge 220 with the first steel wire rope 250; when the length of the suspension bridge 220 exceeds 2m, the suspension bridge 220 can no longer be erected, otherwise it will collide with the walkway board on the upper floor. Therefore, the suspension bridge 220 can only tilt toward the side close to the tower crane's jib, and it is very easy to fall back under the action of gravity and collide with the tower crane's jib. Summary of the Invention

[0004] The present invention aims to provide an attached lifting scaffold to solve the problem that a suspension bridge frame is too long and difficult to be pulled up by a steel wire rope.

[0005] To achieve the above object, the present application adopts the following technical scheme: An attached lifting scaffold comprises a suspension bridge system, the suspension bridge system comprises a plurality of layers of suspension bridge mechanisms and a plurality of vertically arranged vertical rods, the plurality of vertical rods vertically connect the plurality of layers of suspension bridge mechanisms, each layer of suspension bridge mechanism comprises two symmetrically arranged suspension bridge units, each suspension bridge unit comprises a first steel wire rope, a limiting piece and a fixed connecting plate, a first suspension bridge frame and a second suspension bridge frame which are sequentially hinged, the distance between the symmetric axes of the two suspension bridge units and the fixed connecting plate, the first suspension bridge frame and the second suspension bridge frame is from far to near, the two symmetrically arranged second suspension bridge frames are detachably connected at the ends, the fixed connecting plate is fixedly connected with the vertical rod, the first steel wire rope is connected with the vertical rod and the end of the first suspension bridge frame close to the second suspension bridge frame, and the limiting piece can limit the relative rotation of the first suspension bridge frame and the second suspension bridge frame.

[0006] The beneficial effects of the present scheme are:

[0007] 1. Before the attached lifting scaffold is operated to rise, a layer of suspension bridge mechanism needs to be opened to prevent the collision between the suspension bridge frame and the tower crane attachment arm. First, the operator removes the connection (usually bolted connection) between the two second suspension bridge frames, pulls up the first suspension bridge frame through the first steel wire rope, and rotates the first suspension bridge frame around the end of the fixed connecting plate, thereby pulling up the second suspension bridge frame, and achieving the effect of simultaneously pulling up the first suspension bridge frame and the second suspension bridge frame.

[0008] 2. Compared with the prior art in which the first steel wire rope is directly connected with the end of the suspension bridge frame, in the present scheme, the suspension bridge frame is divided into the first suspension bridge frame and the second suspension bridge, and after the first steel wire rope is connected with the end of the first suspension bridge frame, since the first suspension bridge frame is shorter in length than the suspension bridge frame in the prior art, the angle between the first suspension bridge frame and the first steel wire rope is larger, and when the first steel wire rope is pulled, the vertical component force is larger, which is more easily overcome the vertical gravity, thereby pulling up the first suspension bridge frame and the second suspension bridge frame.

[0009] 3. When the length of the suspension bridge frame exceeds 2m, the suspension bridge frame in the prior art cannot stand up and inclines towards the side close to the tower crane attachment arm, which is inconvenient for binding and fixing firmly and is very dangerous; while in the present scheme, the first suspension bridge frame and the second suspension bridge frame are automatically folded together after being pulled up, as long as the length of the first suspension bridge frame and the second suspension bridge frame does not exceed 2m, they will not collide with the walkway plate of the upper layer, which completely meets the requirements of most construction scenes, the first suspension bridge frame and the second suspension bridge frame incline towards the side away from the tower crane attachment arm and will not fall back under the action of gravity to collide with the tower crane attachment arm, which is more safe and reliable.

[0010] Preferably, as an improvement, the hanging bridge unit further comprises a plurality of connecting pieces, the fixed connecting plate, the first hanging bridge frame and the second hanging bridge frame are fixedly connected in length direction, the connecting pieces are bolted on the side surface of the fixed connecting plate, the first hanging bridge frame and the second hanging bridge frame to realize the connection of adjacent plate bodies; the hinge position of the fixed connecting plate and the first hanging bridge frame is arranged on the upper surface of the two, and the hinge position of the first hanging bridge frame and the second hanging bridge frame is arranged on the lower surface of the two. By such arrangement, the following effects are achieved:

[0011] 1. When the attached lifting scaffold is operated to the position and the hanging bridge mechanism is closed, the fixed connecting plate, the first hanging bridge frame and the second hanging bridge frame are fixed together through the connecting pieces, so that the hanging bridge mechanism is more stable, and the overall stability of the attached lifting scaffold is enhanced.

[0012] 2. In the prior art, when the hanging bridge mechanism is opened, the two hanging bridge frames are usually turned to the two sides to be opened. In order to realize the upward turning of the hanging bridge frame, the hinge position of the hanging bridge frame and the fixed connecting plate is on the upper surface. However, due to the thickness of the hanging bridge frame, for the lower surface of the end of the hanging bridge frame away from the fixed connecting plate, it is necessary to rotate around the hinge position to the same height of the hinge position. At this time, the lower surface of the end of the hanging bridge frame away from the fixed connecting plate is horizontally away from the fixed connecting plate, so that a certain gap is needed between the two hanging bridge frames to meet the horizontal movement. If the ends of the two hanging bridge frames are tightly closed, the turning of the hanging bridge frame cannot be realized.

[0013] However, in order to ensure the stability of the overall structure, it is necessary to reduce the gap between the adjacent plate bodies (walkway plates) as much as possible to limit the movement between the plate bodies, reduce the collision between the plate bodies in the construction process, and prevent the loosening of the connecting bolts in the collision. In the prior art, the end of the hanging bridge frame away from the fixed connecting plate corresponds to the end of the second hanging bridge frame away from the fixed connecting plate in the present scheme. However, since the first hanging bridge frame directly drives the second hanging bridge frame to move horizontally close to the fixed connecting plate, the upper and lower surfaces of the end of the second hanging bridge frame away from the fixed connecting plate will not be horizontally away from the fixed connecting plate. Therefore, a certain gap is not needed between the two second hanging bridge frames to ensure the turning of the hanging bridge frame, thereby ensuring the stability of the overall structure.

[0014] Preferably, as an improvement, the suspension bridge system further comprises a second steel wire, and the side of the first suspension bridge frame near the end of the second suspension bridge frame is provided with a pull ring, which can be connected with the second steel wire. In this way, since the step distance of the frame is usually 2 m and the building height is usually more than 2.9 m, the height of the frame is lifted at a time is the height of a floor, so it is often necessary to open two layers of suspension bridge mechanism at the same time, connect the upper end of the second steel wire with the first suspension bridge frame of the upper layer and the lower end of the second steel wire with the first suspension bridge frame of the current layer, and only pull the first steel wire of the upper layer to open two layers of suspension bridge mechanism at the same time; release the connection between the upper end of the second steel wire and the first suspension bridge frame of the upper layer, so that the upper end of the second steel wire falls down, the second steel wire is upside down, and the new lower end of the second steel wire is connected with the first suspension bridge frame of the lower layer, so as to open two layers of suspension bridge mechanism at the same time next time.

[0015] Preferably, as an improvement, the hinge position of the first suspension bridge frame and the second suspension bridge frame is provided with a hinge assembly, the hinge assembly comprises a first lug and a second lug, the first lug is fixed on the first suspension bridge frame, the second lug is fixed on the second suspension bridge frame, the limiting piece is a connecting bolt, the connecting bolt comprises a smooth section and a threaded section, when the smooth section passes through the first lug and the second lug, the first suspension bridge frame and the second suspension bridge frame are hinged, and when the threaded section passes through and is threadedly connected with the first lug and the second lug, the first suspension bridge frame and the second suspension bridge frame are fixedly connected.

[0016] In this way, when it is necessary to open the suspension bridge mechanism, it is necessary to go to the second suspension bridge frame, disconnect the connection between the two second suspension bridge frames, at this time, if there is no connecting piece and limiting piece, the second suspension bridge frame will be turned down around the end of the first suspension bridge frame, and then the operator will fall down. In order to prevent the second suspension bridge frame from turning down, the present scheme not only fixes the first suspension bridge frame and the second suspension bridge frame by the connecting piece, but also limits the relative rotation of the first suspension bridge frame and the second suspension bridge frame by the connecting bolt.

[0017] Specifically, after disconnecting the connection between the two second suspension bridge frames, the operator stands on the first suspension bridge frame, removes the connecting piece, rotates the connecting bolt, so that the threaded section passes out of the first lug and the second lug, and the smooth section passes into the first lug and the second lug, so that the first suspension bridge frame and the second suspension bridge frame can rotate, and then the first suspension bridge frame and the second suspension bridge frame are pulled up by the first steel wire. Conversely, after the first suspension bridge frame and the second suspension bridge frame are lowered by the first steel wire, the connecting piece is installed, so that the threaded section passes into the first lug and the second lug, so that the first suspension bridge frame and the second suspension bridge frame cannot rotate, so as to ensure the stability of the overall structure.

[0018] Preferably, as an improvement, a sliding groove is horizontally arranged in the fixed connecting plate, and the limiting piece is a supporting rod, which is in sliding connection with the sliding groove, and can provide upward supporting force below the first suspension bridge frame and the second suspension bridge frame after sliding out of the sliding groove. In this way, the following effects are achieved:

[0019] 1. After disconnecting the connection between the two second bridge frames, compared with using connecting bolts as limiters and increasing the connection to fix the first bridge frame and the second bridge frame, using the support rod as a support rod is more convenient and fast, only the support rod needs to be slid out of the sliding groove, the support rod is supported below the first bridge frame and the second bridge frame, can lock the first bridge frame and the second bridge frame, prevent the second bridge frame from overturning downward relative to the first bridge frame.

[0020] 2. Compared with connecting bolts to strengthen the fixed connection between the first bridge frame and the second bridge frame, the second bridge frame is in a cantilever state, the support rod directly provides vertical upward support force for the second bridge frame, the part of the support rod left in the sliding groove can also provide reaction force for the support force of the support rod, and the overall structure is more stable.

[0021] 3. Then, the first steel wire rope is used to pull up the first bridge frame and the second bridge frame, and the support rod is retracted into the sliding groove, so as to avoid collision between the support rod and the tower crane attached arm when lifting the frame body.

[0022] 4. When constructing in winter, protective mesh is usually not installed at the position of the first bridge frame and the second bridge frame to avoid the tower crane attached arm, and the outside cold wind and water vapor are easy to contact the first bridge frame and the second bridge frame, and cause the two to freeze, and people walking on the first bridge frame and the second bridge frame are easy to slip and fall, causing safety hazards; in the present scheme, when the first steel wire rope is used to pull up the first bridge frame and the second bridge frame, due to inertia, the second bridge frame collides with the first bridge frame and generates vibration, and the water droplets and ice on both sides of the first bridge frame and the second bridge frame will be shaken off, so the first bridge frame and the second bridge frame are less likely to freeze in winter.

[0023] Preferably, as an improvement, the end of the support rod is an outwardly convex arc surface, and the lower surface of the second bridge frame is an inwardly concave arc surface, and when the second bridge frame is horizontally placed, the end of the support rod can contact the lower surface of the second bridge frame. By setting like this, the following effects are achieved:

[0024] 1. The arc surface can reduce the friction between the support rod and the second bridge, and increase the durability of the two.

[0025] 2. When the sliding of the support rod has no power source, manual sliding in the sliding groove is usually required, but when the first steel wire rope is used to pull up the first bridge frame and the second bridge frame, the lower surface of the second bridge frame will push the end of the support rod, and then the support rod will retract into the sliding groove, without the need for manual sliding of the support rod, saving time and effort.

[0026] 3. When the sliding of the support rod has a power source, after the frame body is climbed in place, the operator only needs to pull the first steel wire rope and slowly release it, the support rod slides out of the sliding groove, pushes the second hanging bridge frame lower surface, thereby driving the first hanging bridge frame and the second hanging bridge frame to restore to horizontal. In this process, the support rod provides partial vertical support force to the second hanging bridge frame, saving the operator's physical strength, and it is more safe and convenient to operate.

[0027] Preferably, as an improvement, the hanging bridge system further comprises a bottom hanging bridge mechanism, the bottom hanging bridge mechanism comprising a bottom hanging bridge frame, a bottom fixed plate and a third steel wire rope, the bottom fixed plate and the vertical rod being fixedly connected, the bottom hanging bridge frame and the bottom fixed plate being hingedly connected, the length of the bottom hanging bridge frame being equal to the sum of the lengths of the first hanging bridge frame and the second hanging bridge frame, and the third steel wire rope being capable of connecting the bottom hanging bridge frame and the pull ring on the first hanging bridge frame of the upper layer hanging bridge mechanism. After the first hanging bridge frame is pulled up by the first steel wire rope of the upper layer, the top of the bottom hanging bridge frame is located between the first hanging bridge frame and the second hanging bridge frame of the upper layer. In this way, since there is no foothold for the operator below the bottom layer of the frame body, it is more dangerous to pull up the bottom hanging bridge frame of the bottom layer, and it is not appropriate to divide the bottom hanging bridge frame into two hanging bridge frames. A whole hanging bridge frame has higher rigidity and is more secure. However, the step distance of the frame body cannot be greater than 2m, and in this scheme, when the third steel wire rope pulls up the hanging bridge frame, the part of the bottom hanging bridge frame that is too long is arranged between the first hanging bridge frame and the second hanging bridge frame of the upper layer, the upper end of the bottom hanging bridge frame is clamped by the first hanging bridge frame and the second hanging bridge frame, and the bottom hanging bridge frame is fixed more stably.

[0028] Preferably, as an improvement, the hanging bridge system further comprises a plurality of upper layer walkway plate mechanisms, the upper layer walkway plate mechanism being located above the hanging bridge mechanism, the vertical rod comprising a midspan vertical rod, the midspan vertical rod being located between the tower crane auxiliary arms, the upper part of the midspan vertical rod and the upper layer walkway plate mechanism being fixedly connected, and the lower part of the midspan vertical rod and the second hanging bridge frame being detachably connected.

[0029] In this way, the tower crane auxiliary arms are usually arranged on both sides of the tower crane, so that the vertical rod arranged in the corresponding position in the middle of the tower crane usually does not collide with the auxiliary arms. During construction, the uppermost two layers are usually construction layers, at this time the concrete of the main structure does not have enough strength, the formwork cannot be removed, and the tower crane auxiliary arms cannot be installed on the concrete. Therefore, the ordinary walkway plates of the upper layers of the frame body do not collide with the tower crane auxiliary arms during operation, and there is no need to design the ordinary walkway plates as movable hanging bridge frames. The stability of the fixed ordinary walkway plates is higher than that of the movable hanging bridge frames, and therefore the reliability of the fixed connection between the upper part of the midspan vertical rod and the upper layer walkway plate mechanism is higher.

[0030] Through the connection of the midspan vertical rod and the second hanging bridge frame, the stability of the second hanging bridge frame is increased, vertical support is provided for the end of the second hanging bridge frame away from the fixed connection plate, the deflection of the second hanging bridge frame is reduced, and the overall structural stability is increased.

[0031] Preferably, as an improvement, the upper walkway plate mechanism comprises common walkway plates, the end of the cross stand further comprises a cross end stand, the cross end stand vertically connects the fixed connecting plates of all layers, the bottom fixed plate and the common walkway plates, horizontal truss units are arranged between the common walkway plates of different layers, and the truss units are fixed on the cross middle stand and the cross end stand. In this way, the horizontal connection strength between the cross middle stand and the cross end stand is increased through the truss units, and the overall stability of the structure is increased.

[0032] Preferably, as an improvement, the hanging bridge system further comprises a diagonal bracing rod, and the diagonal bracing rod connects the common walkway plate and the cross middle stand. In this way, the rigidity of the upper walkway plate mechanism is increased through the diagonal bracing rod, and the strength of the overall structure is further increased. The common walkway plate provides upward tension to the cross middle stand through the diagonal bracing rod, so as to prevent the cross middle stand from sinking under the action of gravity. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 A schematic diagram of a prior art hanging bridge system;

[0034] Figure 2 A schematic diagram of a completed embodiment 1;

[0035] Figure 3 A schematic diagram of a completed embodiment 1;

[0036] Figure 4 A schematic diagram of a completed embodiment 1;

[0037] Figure 5 A front view of a connecting bolt of embodiment 1;

[0038] Figure 6 A schematic diagram of a first bolt head and a connecting section of a connecting bolt of embodiment 1 when not connected;

[0039] Figure 7 A three-dimensional axonometric view of a hanging bridge unit of embodiment 1 from a top view angle;

[0040] Figure 8 A three-dimensional axonometric view of a hanging bridge unit of embodiment 1 from a bottom view angle;

[0041] Figure 9 A three-dimensional axonometric view of a hanging bridge unit of embodiment 1 from a bottom view angle; Figure 3 A three-dimensional axonometric view of a hanging bridge unit of embodiment 1 from a bottom view angle;

[0042] Figure 10 A three-dimensional axonometric view of a hanging bridge unit of embodiment 2 from a bottom view angle. DETAILED DESCRIPTION

[0043] The following will be further described in detail through specific embodiments:

[0044] The figure marks in the drawings of the specification include: upper walkway plate mechanism 1, ordinary walkway plate 101, truss unit 102, diagonal brace 103, three-layer suspension bridge mechanism 2, fixed connecting plate 210, slide groove 211, support rod 212, suspension bridge frame 220, first suspension bridge frame 230, first connecting block 231, pull ring 232, second steel wire rope 233, second suspension bridge frame 240, second connecting block 241, concave arc surface 242, first steel wire rope 250, connecting member 260, hinge assembly 270, connecting bolt 280, first bolt head 281, connecting section 282, smooth section 283, threaded section 284, second bolt head 285, bottom suspension bridge mechanism 3, bottom fixed plate 301, bottom suspension bridge frame 302, third steel wire rope 303, mid-span vertical pole 401, span end vertical pole 402, tower crane auxiliary arm 5.

[0045] Example 1

[0046] Example 1 is basically as Figures 2-8 As shown: an attached lifting scaffold, including a suspension bridge system, the suspension bridge system includes a three-layer upper walkway plate mechanism 1, a three-layer suspension bridge mechanism 2, a bottom suspension bridge mechanism 3, a second steel wire rope 233, a plurality of diagonal braces 103 and vertically arranged upright poles.

[0047] like Figure 2 、 Figure 3 and Figure 9 As shown, each upper walkway plate mechanism 1 includes an ordinary walkway plate 101, and a horizontal truss unit 102 is provided between the ordinary walkway plates 101 of the lower two layers. The truss unit 102 is a frame of a truss structure welded by a plurality of rectangular tubes. In this embodiment, all plate components and vertical pole sides are provided with equidistant bolt holes for easy connection and assembly. The steel wire ropes in the drawings are indicated by thick straight lines. After the steel wire ropes pass through the hole structure, they can be fixed by rope clamps.

[0048] The three-layer suspension bridge mechanism 2 is divided into the second layer suspension bridge mechanism, the third layer suspension bridge mechanism and the fourth layer suspension bridge mechanism from bottom to top. Each layer of suspension bridge mechanism includes two suspension bridge units arranged symmetrically on the left and right. Some details of the suspension bridge units are not shown in the figure. Figure 2 The details are shown in Figure 7 As shown, taking the suspension bridge unit on the left as an example, each suspension bridge unit includes a first steel wire rope 250, a fixed connecting plate 210 and a suspension bridge frame 220. The suspension bridge frame 220 in this solution is as shown in FIG. Figure 1 On the basis of the above-mentioned existing technology, the suspension bridge frame 220 is divided into two parts, a first suspension bridge frame 230 and a second suspension bridge frame 240. The fixed connecting plate 210, the first suspension bridge frame 230 and the second suspension bridge frame 240 are pressed tightly from left to right in sequence, and the symmetry axis of the two symmetrically arranged suspension bridge units is located at the right end of the second suspension bridge frame 240.

[0049] As shown in Figure 7 the upper surface of the connecting end of the fixed connecting plate 210 and the first suspension bridge frame 230 is provided with two sets of hinged components 270, and one connecting piece 260 is respectively arranged on both sides. The hinged component 270 comprises a first ear plate, a second ear plate and a rotating shaft, Figure 7 The rotating shaft is omitted in the middle, the first ear plate is welded on the fixed connecting plate 210, the second ear plate is welded on the first suspension bridge frame 230, the rotating shaft passes through the first ear plate and the second ear plate, and is rotatably connected with the first ear plate and the second ear plate; the connecting piece 260 is a rectangular steel plate, four bolt holes are formed in the connecting piece 260, and in the initial state, two of the bolt holes are bolted with the fixed connecting plate 210, and the other two bolt holes are bolted with the first suspension bridge frame 230.

[0050] As shown in Figure 8 the lower surface of the connecting end of the first suspension bridge frame 230 and the second suspension bridge frame 240 is also provided with two sets of hinged components 270, and one connecting piece 260 is respectively arranged on both sides. The difference between the connecting end of the fixed connecting plate 210 and the first suspension bridge frame 230 is that the rotating shaft of the hinged component 270 is replaced by a connecting bolt 280, Figure 8 The connecting bolt 280 is omitted in the middle, as shown in Figure 5 , Figure 6 The connecting bolt 280 comprises a first bolt head 281 and a bolt body, the bolt body comprises, in sequence from left to right, an integrally formed connecting section 282 with increasing diameter, a smooth section 283, a threaded section 284 and a second bolt head 285, the first bolt head 281 is threadedly connected with the connecting section 282, when the smooth section 283 passes through the first ear plate and the second ear plate, the first suspension bridge frame 230 and the second suspension bridge frame 240 are hinged, and when the threaded section 284 passes through and is threadedly connected with the first ear plate and the second ear plate, the first suspension bridge frame 230 and the second suspension bridge frame 240 are fixedly connected. Two first connecting blocks 231 are welded on the upper surface of one end of the first suspension bridge frame 230 close to the second suspension bridge frame 240, a rope hole is formed in the first connecting block 231, and the first steel wire rope 250 is connected with the first connecting block 231 after passing through the rope hole. Two pull rings 232 are respectively welded on both sides of one end of the first suspension bridge frame 230 close to the second suspension bridge frame 240, the second steel wire rope 233 is connected with the pull ring 232 after passing through the pull ring 232, and at most two second steel wire ropes 233 are needed in one suspension bridge system. Two second connecting blocks 241 are welded on the upper surface of one end of the second suspension bridge frame 240 away from the first suspension bridge frame 230, bolt holes are formed in the second connecting blocks 241, and the second connecting blocks 241 and the second connecting blocks 241 on another suspension bridge unit are connected by bolts.

[0051] As shown in Figure 2As shown, the bottom drawbridge mechanism 3 includes two symmetrically arranged bottom drawbridge units, each of which includes a bottom drawbridge frame 302, a bottom fixed plate 301, and a third steel wire rope 303. The bottom drawbridge frame 302 and the bottom fixed plate 301 are hinged, and the connection mode of the bottom drawbridge frame 302 and the bottom fixed plate 301 is the same as that of the fixed connection plate 210 and the first drawbridge frame 230. The length of the bottom drawbridge frame 302 is equal to the sum of the lengths of the first drawbridge frame 230 and the second drawbridge frame 240. Two pull rings 232 are welded to the two sides of the end of the bottom drawbridge frame 302 away from the bottom fixed plate 301. The third steel wire rope 303 connects the pull ring 232 of the bottom drawbridge frame 302 and the pull ring 232 on the first drawbridge frame 230 of the second layer drawbridge mechanism, as shown in Figure 4 As shown, when the first steel wire rope 250 of the second layer pulls up the first drawbridge frame 230, the third steel wire rope 303 pulls up the bottom drawbridge frame 302, and the top of the bottom drawbridge frame 302 is located between the first drawbridge frame 230 and the second drawbridge frame 240 of the upper layer.

[0052] The upright rods include a mid-span upright rod 401 and end-span upright rods 402. The mid-span upright rod 402 is located between the tower crane attachment arms 5. The end-span upright rods 402 are bolted to the side surfaces of the ordinary walkway plates 101, the fixed connection plates 210, and the bottom fixed plates 301 from top to bottom. The mid-span upright rod 401 is bolted to the side surfaces of the ordinary walkway plates 101, the second drawbridge frames 240, and the bottom drawbridge frames 302 from top to bottom. The truss units 102 are bolted to the mid-span upright rod 401 and the end-span upright rods 402. The upper end of the diagonal bracing rod 103 is bolted to the ordinary walkway plate 101, and the lower end of the diagonal bracing rod 103 is bolted to the mid-span upright rod 401.

[0053] The specific implementation steps are as follows:

[0054] 1. Before the attached lifting scaffold runs upward, the drawbridge mechanism of the corresponding height is opened. Specifically, the operator removes the bolts of the second connecting block 241 on the two second drawbridge frames 240, removes the connecting piece 260 between the first drawbridge frame 230 and the second drawbridge frame 240, rotates the connecting bolt 280 so that the smooth section 283 of the connecting bolt 280 passes through the first ear plate and the second ear plate at the same time, pulls up the first drawbridge frame 230 through the first steel wire rope 250, and rotates the first drawbridge frame 230 around the end of the fixed connection plate 210, thereby pulling up the second drawbridge frame 240.

[0055] 2. As shown in Figure 3 When two layers of drawbridge mechanisms need to be opened at the same time, the pull rings 232 of the first drawbridge frames 230 of the two layers are connected together by the second steel wire rope 233 to open the two layers of drawbridge mechanisms 220 at the same time.

[0056] 3. As shown in Figure 4As shown, when the second layer of the drawbridge mechanism and the bottom drawbridge mechanism 3 need to be opened simultaneously, the pull ring 232 of the first drawbridge frame 230 of the second layer and the bottom drawbridge frame 220 are connected together by the third steel wire rope 303, so as to open the second layer of the drawbridge mechanism and the bottom drawbridge mechanism 3 simultaneously.

[0057] Embodiment 2

[0058] The difference between Embodiment 2 and Embodiment 1 is that all the connecting members 260 are cancelled or reduced, and it is preferable to cancel all the connecting members 260 in this embodiment, so that the operation is more convenient; the connecting bolt 280 is replaced by a rotating shaft, such as Figure 10 As shown, two horizontal sliding grooves 211 are formed in the fixed connecting plate 210, both of which are arranged along the length direction of the fixed connecting plate 210 and penetrate through the right side of the fixed connecting plate 210 at the right end, and a support rod 212 is slidingly connected in the sliding groove 211, the right end of the support rod 212 is an outwardly convex arc surface, and the lower surface of the second drawbridge frame 240 is an inwardly concave arc surface 242, the support rod 212 can provide upward support force below the first drawbridge frame 230 and the second drawbridge frame 240 after sliding out of the sliding groove 211, and in the initial state, the support rod 212 end can contact the lower surface of the second drawbridge frame 240 when the second drawbridge is horizontally placed.

[0059] Embodiment 3

[0060] The difference between Embodiment 3 and Embodiment 2 is that the support rod 212 is an electric telescopic rod, and the left end of the electric telescopic rod is bolted to the inner wall of the sliding groove 211.

[0061] The above-mentioned is only an embodiment of the present application, and the specific technical solutions and / or common knowledge of the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, which will not affect the effect and practicality of the patent. The protection scope claimed in this application should be subject to the content of its claims, and the specific embodiments described in the specification can be used to explain the content of the claims.

Claims

1. An attached lifting scaffold, comprising a suspension bridge system, the suspension bridge system comprising a plurality of layers of suspension bridge mechanisms and a plurality of vertically arranged upright poles, the plurality of upright poles vertically connecting the plurality of layers of suspension bridge mechanisms, each layer of suspension bridge mechanism comprising two symmetrically arranged suspension bridge units, characterized in that: Each suspension bridge unit includes a first steel wire rope, a limiter, and a fixed connecting plate, a first suspension bridge frame, and a second suspension bridge frame that are hinged in sequence. The distances between the symmetry axes of the two suspension bridge units and the fixed connecting plate, the first suspension bridge frame, and the second suspension bridge frame are from far to near. The ends of the two symmetrically arranged second suspension bridge frames are detachably connected. The fixed connecting plate is fixedly connected to the vertical pole. The first steel wire rope connects the vertical pole and one end of the first suspension bridge frame close to the second suspension bridge frame. The limiter can limit the relative rotation of the first suspension bridge frame and the second suspension bridge frame. The suspension bridge unit also includes a plurality of connecting members, the fixed connecting plate, the first suspension bridge frame and the second suspension bridge frame are tightly pressed in the length direction, and the connecting members are bolted to the sides of the fixed connecting plate, the first suspension bridge frame and the second suspension bridge frame to achieve the connection between adjacent plates; the hinge position of the fixed connecting plate and the first suspension bridge frame is set on the upper surface of the two, and the hinge position of the first suspension bridge frame and the second suspension bridge frame is set on the lower surface of the two; The suspension bridge system also includes a second steel wire rope. A pull ring is provided on the side of the first suspension bridge frame near one end of the second suspension bridge frame, and the pull ring can be connected to the second steel wire rope. The suspension bridge system also includes a bottom suspension bridge mechanism, which includes a bottom suspension bridge frame, a bottom fixed plate and a third steel wire rope. The bottom fixed plate is fixedly connected to the vertical pole, and the bottom suspension bridge frame and the bottom fixed plate are hinged. The length of the bottom suspension bridge frame is equal to the sum of the lengths of the first suspension bridge frame and the second suspension bridge frame. The third steel wire rope can connect the bottom suspension bridge frame and the pull ring on the first suspension bridge frame of the upper suspension bridge mechanism. After the first steel wire rope of the upper layer pulls up the first suspension bridge frame, the top of the bottom suspension bridge frame is located between the first suspension bridge frame and the second suspension bridge frame of the upper layer.

2. The attached lifting scaffold according to claim 1, characterized in that: The hinged position of the first suspension bridge frame and the second suspension bridge frame is provided with a hinge assembly, which includes a first ear plate and a second ear plate. The first ear plate is fixed on the first suspension bridge frame, and the second ear plate is fixed on the second suspension bridge frame. The limiting piece is a connecting bolt, and the connecting bolt includes a smooth section and a threaded section. When the smooth section passes through the first ear plate and the second ear plate, the first suspension bridge frame and the second suspension bridge frame are hinged. When the threaded section passes through and is threadedly connected to the first ear plate and the second ear plate, the first suspension bridge frame and the second suspension bridge frame are fixedly connected.

3. The attached lifting scaffold according to claim 1, characterized in that: A slide groove is horizontally provided in the fixed connecting plate, and the limiting piece is a support rod. The support rod and the slide groove are slidably connected. After the support rod slides out of the slide groove, it can provide an upward supporting force under the first suspension bridge frame and the second suspension bridge frame.

4. The attached lifting scaffold according to claim 3, characterized in that: The end of the support rod is an outwardly convex arc surface, and the lower surface of the second suspension bridge frame is an inwardly concave arc surface. When the second suspension bridge is placed horizontally, the end of the support rod can contact the lower surface of the second suspension bridge frame.

5. The attached lifting scaffold according to claim 1, characterized in that: The suspension bridge system also includes several upper walkway plate mechanisms, which are located above the suspension bridge mechanism. The vertical poles include mid-span vertical poles, which are located between the tower crane's auxiliary arms. The upper part of the mid-span vertical poles is fixedly connected to the upper walkway plate mechanisms, and the lower part of the mid-span vertical poles is detachably connected to the second suspension bridge frame.

6. The attached lifting scaffold according to claim 5, characterized in that: The upper walkway plate mechanism includes ordinary walkway plates, and the uprights also include span-end uprights. The span-end uprights vertically connect the fixed connecting plates, bottom fixed plates and ordinary walkway plates of all layers. Horizontal truss units are provided between ordinary walkway plates of different layers, and the truss units are fixed on the mid-span uprights and span-end uprights.

7. The attached lifting scaffold according to claim 6, characterized in that: The suspension bridge system also includes diagonal braces that connect the common walkway slabs to the mid-span uprights.

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