Turnover road plate pouring supporting device and construction method

Abstract

The invention discloses a turnover road plate pouring supporting device and a construction method, and relates to the technical field of road plate pouring, and the turnover road plate pouring supporting device comprises an expansion frame, a supporting frame and a supporting rod, the supporting air bag is arranged in an inner cavity of the expansion frame, and the supporting air bag is used for driving the expansion frame to expand or contract and fold; and the roller shutter mechanisms are arranged at the top end port and the bottom end port of the expansion frame, and the roller shutter mechanisms are used for blocking the upper end port and the lower end port of the expansion frame. Expansion or contraction of the expansion frame is controlled through the supporting air bag, so that the expansion frame can form a rectangular frame-shaped body with the upper end and the lower end communicating with each other, the two expanded ports are plugged in cooperation with the roller shutter mechanism, pouring and shaping of concrete can be met, meanwhile, the expansion frame is contracted through the supporting air bag, and the expansion efficiency is improved. And the supporting device has the functions of expansion use and contraction recovery, so that the construction cost of road plate pouring is reduced, and the use requirements are better met.

Description

Technical Field

[0001] The present invention relates to the technical field of road slab pouring, and particularly relates to a reusable road slab pouring support device and a construction method. Background Technique

[0002] During the pouring process of the road slab, the middle layer of the road slab is poured into a grid slab. The middle layer has "mouth"-shaped cavities that are recessed downward in a matrix shape, which can effectively disperse the pressure of soil and groundwater on the side wall of the foundation pit, prevent the deformation and collapse of the foundation pit. By dividing the foundation pit into multiple small areas, each small area can independently bear the pressure, thereby improving the stability of the overall structure; at the same time, it can also reduce the pouring materials and lower the cost.

[0003] In the prior art, the pouring method of the road slab is generally to lay a formwork at the bottom first, then bind the bottom formwork steel bars, then bind the beam steel bars, and then place a customized mold box body inside the bound area. Through the support of the mold box body, a box-shaped structure with a hollow interior can be obtained by finally pouring concrete, commonly known as a "ribbed slab"; However, the box mold used in the above pouring process cannot be recycled after pouring, resulting in waste of materials. At the same time, the box mold is expensive, increasing the cost of road slab pouring and making it difficult to meet the actual work requirements. In order to reduce the construction cost of the road slab, a reusable road slab pouring support device and a construction method are proposed. Summary of the Invention

[0004] The purpose of the present invention is to provide a reusable road slab pouring support device and a construction method to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A reusable road slab pouring support device, comprising: An expansion frame, the expansion frame is in a hollow shape with both upper and lower ends communicating; A support airbag, the support airbag is arranged in the inner cavity of the expansion frame, and the support airbag is used to drive the expansion frame to expand and unfold or contract and fold; A rolling curtain mechanism, the rolling curtain mechanism is arranged at the top port and the bottom port positions of the expansion frame, and the rolling curtain mechanism is used to block the upper and lower port positions of the expansion frame.

[0006] Preferably, the expansion frame includes: Two groups of panels, the two groups of panels are arranged at intervals front and back; Two groups of side plates are respectively arranged at both end positions between the two groups of panels. The opposite sides of the side plates and the panels are both bevel-shaped. Each group of panels consists of two panels, and the adjacent sides of the two side plates are rotatably connected by hinges. The inner positions between the side plates and the panels are rotatably connected by hinges.

[0007] Preferably, there are two expansion frames arranged at an interval up and down. A telescopic component is arranged between the two expansion frames for adjusting the distance between the upper and lower expansion frames. Installation slots for installing the rolling curtain mechanism are provided at the tops of the two panels at the upper position and the bottom of one of the side plates at the lower position.

[0008] Preferably, the telescopic component includes: A first telescopic plate. First telescopic slots are provided on the opposite sides of the two side plates at the upper and lower positions, and the outer wall of the first telescopic plate is slidably connected to the inner wall of the first telescopic slot; A second telescopic plate. Second telescopic slots are provided on the opposite sides of the two panels at the upper and lower positions, and the outer wall of the second telescopic plate is slidably connected to the inner wall of the second telescopic slot.

[0009] Preferably, sliding grooves are provided at the top and bottom of the first telescopic plate. A limiting sliding plate is slidably connected in the sliding groove. A connecting sliding rod is fixedly connected to the middle of the limiting sliding plate. One end of the connecting sliding rod is fixedly connected to the inner wall of the first telescopic slot. An elastic compression spring is fixedly connected between the limiting sliding plate and the inner wall of the sliding groove.

[0010] Preferably, the rolling curtain mechanism includes: A hollow outer shell. A winding and unwinding shaft is rotatably connected inside the hollow outer shell. A rolling curtain opening is provided at the end of the side wall of the hollow outer shell. The hollow outer shell is fixedly installed at the installation slot position of the panel. A second fixed pulley is rotatably connected to the bottom of the inner wall on one side of the rolling curtain opening. A first fixed pulley is rotatably connected to the top of the inner wall on the other side of the rolling curtain opening. The outer wall of the rolling curtain plate sequentially bypasses the outer walls of the second fixed pulley and the first fixed pulley and extends out from the rolling curtain opening; A rolling curtain plate, which is wound around the outer wall of the winding and unwinding shaft, and one end of the rolling curtain plate extends from the rolling curtain opening to the outside of the hollow outer shell; A driving device, which is installed inside the hollow outer shell and is used to control the rotation of the winding and unwinding shaft.

[0011] Preferably, the driving device includes: A winding and unwinding motor, which is fixedly arranged at the corner inside the hollow outer shell; A first belt pulley, which is fixedly connected to the end of the winding and unwinding shaft, and a transmission belt is sleeved on the outer wall of the first belt pulley; A second pulley, which is fixedly connected to the rotating end of the winding and unwinding motor, and the inner end of the transmission belt is drivingly sleeved on the outer wall of the second pulley.

[0012] Preferably, a gasbag seat is fixedly communicated with the middle of the top end of the supporting airbag. A lifting handle is fixedly connected to the middle of the gasbag seat. An air charging and discharging pipe communicated with the supporting airbag is fixedly arranged at the end of the gasbag seat. A pressure sensor is fixedly installed at the other end of the gasbag seat, and the end of the pressure sensor extends into the supporting airbag. The pressure sensor is used for detecting the internal air pressure of the supporting airbag.

[0013] Preferably, guide strips are fixedly connected to the ends of the inner side walls of the side plates. Both ends of each guide strip are in a sharp cone shape. Guide grooves matching the guide strips are formed on both side walls of the rolling curtain board.

[0014] Another invention, the present invention also provides a construction method for casting a reusable road slab, using a reusable road slab casting support device as described above, including the following steps: Step 1: First, lay the bottom formwork, and then tie the bottom formwork steel bars and beam steel bars in sequence. After all the steel bars are tied, a groove-shaped casting area can be formed, and the support device is placed inside the tying area; Step 2: Connect the air pump to the gasbag seat through a hose, and inflate the supporting airbag to make it expand. The expansion frame expands and unfolds under the action of the outward thrust provided by the supporting airbag. Two side plates in the same group in the expansion frame rotate from the stacked state to the butted and unfolded state, so that the expansion frame forms a rectangular frame structure with both upper and lower ends communicated. At the same time, gas can be further inflated to make the supporting airbag expand further in the up and down directions, driving two groups of side plates at the same side position to move in the opposite direction in the vertical direction, so that a relative movement is formed between the first telescopic plate and the side plate to expand. The height of the expansion frame can be adjusted. During this process, the side plate drives the connecting sliding rod to move in the sliding groove, and the limiting sliding plate moves to squeeze the elastic compression spring. In this way, the relative movement between the side plate and the first telescopic plate can only be carried out after the two side plates in each group are fully unfolded, so as to meet the requirement of adjusting the height after the expansion frame is fully opened, and avoid the situation that the supporting airbag cannot fully open the expansion frame; Step 3: After the expansion frame expands to the required shape, the rolling curtain mechanism starts to operate. The winding and unwinding motor drives the winding and unwinding shaft to rotate, and the rolling curtain board is unwound. The rolling curtain board is guided by the rolling curtain opening on the hollow outer shell and the cooperation of the first fixed pulley and the second fixed pulley, so that the rolling curtain board horizontally extends out and is slidably inserted into the guide strip on the inner wall of the side plate through the guide groove at the side wall position, so as to limit the rolling curtain board at the port position of the expansion frame, and make the rolling curtain board fit the surface of the supporting airbag to seal the port of the expansion frame, thereby completing the full expansion and use of the support device; Step 4: After the support device is fully deployed, tie the steel bars at the upper layer of the support device, and then continuously pour concrete at the position of the steel bars, so as to form a hollow rectangular shell structure outside the support device. When pouring the topmost layer, a long strip-shaped through hole is reserved in the middle of the upper layer, so that after the pouring part solidifies, a notch can be reserved for taking out the shrunk support device. After the support device is taken out, finally use the steel bar truss floor slab to pour the notch position without formwork to form a seal.

[0015] Compared with the prior art, the technical effects of the present invention are as follows: The support device provided by the present invention controls the expansion or contraction of the expansion frame through the support airbag, so that the expansion frame can form a rectangular frame body with both upper and lower ends communicating. Then, the rolling curtain mechanism is used to seal the two expanded ports, which can meet the pouring and shaping of concrete. At the same time, the support airbag is used to shrink the expansion frame, so that the support device has the functions of expanding and using as well as shrinking and recycling, thereby reducing the construction cost of road slab pouring and better meeting the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a three-dimensional structure schematic diagram of the expansion frame of the present invention.

[0018] Figure 3 It is a three-dimensional structure schematic diagram of the support airbag of the present invention.

[0019] Figure 4 It is a three-dimensional structure schematic diagram of the side plate of the present invention.

[0020] Figure 5 It is a three-dimensional sectional structure schematic diagram of the side plate of the present invention.

[0021] Figure 6 It is a partial three-dimensional sectional structure schematic diagram of the first telescopic plate of the present invention.

[0022] Figure 7 It is an end sectional structure schematic diagram of the rolling curtain mechanism of the present invention.

[0023] Figure 8 It is a partial three-dimensional sectional structure schematic diagram of the rolling curtain plate of the present invention.

[0024] Figure 9 For the present invention Figure 7 Partial enlarged structure schematic diagram at position A.

[0025] In the figure: 100, support airbag; 101, airbag seat; 102, air inlet and outlet pipe; 103, air pressure sensor; 104, lifting grip; 200, expansion frame; 201, side plate; 202, panel; 203, first telescopic plate; 204, first telescopic slot; 205, sliding groove; 206, connecting sliding rod; 207, limiting sliding plate; 208, elastic compression spring; 209, second telescopic plate; 210, guiding strip; 211, installation slot; 300, rolling curtain mechanism; 301, rolling curtain plate; 302, hollow outer shell; 303, winding and unwinding shaft; 304, first pulley; 305, second pulley; 306, winding and unwinding motor; 307, transmission belt; 308, guiding groove; 309, rolling curtain opening; 310, first fixed pulley; 311, second fixed pulley. Detailed implementation manner

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] The present invention provides a Figures 1-9 turnable road slab pouring support device as shown.

[0028] Embodiment 1 includes a support airbag 100, an expansion frame 200, and a rolling curtain mechanism 300. The expansion frame 200 is hollow with both upper and lower ends communicating. The support airbag 100 is disposed in the inner cavity of the expansion frame 200 and is used to drive the expansion frame 200 to expand and unfold or contract and fold. The rolling curtain mechanism 300 is disposed at the top port and the bottom port of the expansion frame 200 and is used to block the upper and lower ends of the expansion frame 200. In the initial state, the expansion frame 200 is in a folded strip-shaped plate due to the contraction of the support airbag 100. The rolling curtain mechanism 300 and the expansion frame 200 are a detachable and separable structure. During use, only by filling the support airbag 100 with gas to expand, the expansion frame 200 can be propped up and unfolded. Then, the rolling curtain mechanism 300 is installed at the upper and lower ends of the expansion frame 200, and the rolling curtain mechanism 300 is driven to block the upper and lower ends of the expansion frame 200. Among them, there are two rolling curtain mechanisms 300 at the upper port position of the expansion frame 200 and one rolling curtain mechanism 300 at the lower port position of the expansion frame 200. In this way, a straight strip-shaped area can be left at the upper port of the expansion frame 200 to cooperate with the notch reserved for the later upper layer pouring. Thus, after the pouring is completed, the rolling curtain mechanism 300 can be recycled and concentrated at the end of the port of the expansion frame 200. The expansion frame 200 is driven by the contraction of the support airbag 100 to fold inwards to form a long strip-shaped plate structure. In this way, the whole can be taken out from the notch reserved for the upper layer pouring, so as to achieve the recycling and reuse of the support device, avoid material waste, and reduce costs. At the same time, it should be noted that a layer of thin film particles, which are made of rubber balloon material or release film material, needs to be pasted on the outer walls of the expanded expansion frame 200 and the rolling curtain mechanism 300. This can prevent the outer walls of the expansion frame 200 and the rolling curtain mechanism 300 from sticking to the concrete, making the demoulding between the outer walls of the expansion frame 200 and the rolling curtain mechanism 300 and the inner wall of the concrete more convenient in the later stage.

[0029] Embodiment 2. On the basis of Embodiment 1, the expansion frame 200 includes two groups of panels 202 and two groups of side plates 201. The two groups of panels 202 are arranged at intervals front and back. The two groups of side plates 201 are respectively arranged at both end positions between the two groups of panels 202. The opposite sides of the side plates 201 and the panels 202 are both bevel-shaped. Each group of panels 202 has two panels. The sides facing each other of two adjacent side plates 201 are rotatably connected by hinges. The inner positions between the side plates 201 and the panels 202 are rotatably connected by hinges. The contact surfaces of the side plates 201 and the panels 202 are both beveled surfaces, so that after the two side walls are fitted, they can be closer, reducing the slit width. In the initial state, the two side plates 201 at the same end position between the two panels 202 are in a folded state. As the support airbag 100 inflates and expands, it can push the rotation between two adjacent side plates 201. At the same time, the connection position between the side plates 201 and the panels 202 rotates. In this way, the two panels 202 can be unfolded into a straight plate shape, and the side plates 201 and the panels 202 are combined to form a frame structure with the same upper and lower ends. The support airbag 100 can support the concrete through the expansion frame 200, and there will be no local depression; when retracting, the two adjacent panels 202 fold towards the direction between the two side plates 201, making the two panels 202 move towards each other, so as to reduce the overall volume of the expansion frame 200, which is convenient to take out from the reserved notch position on the upper layer after pouring.

[0030] Among them, the rolling curtain mechanism 300 includes a hollow housing 302, a rolling curtain plate 301 and a driving device. A winding shaft 303 is rotatably connected inside the hollow housing 302. A rolling curtain opening 309 is opened at the end of the side wall of the hollow housing 302. The hollow housing 302 is fixedly installed at the installation slot 211 position of the panel 202. The rolling curtain plate 301 is wound around the outer wall of the winding shaft 303. One end of the rolling curtain plate 301 extends from the rolling curtain opening 309 to the outside of the hollow housing 302. The driving device is installed inside the hollow housing 302. The driving device is used to control the rotation of the winding shaft 303. After the expansion frame 200 expands in place, the rolling curtain mechanism 300 is installed on the expansion frame 200. The driving device drives the rolling curtain plate 301 to extend out from the rolling curtain opening 309 of the hollow housing 302, so that the rolling curtain plate 301 closes the upper and lower ports of the expansion frame 200 and fits the outer wall of the support airbag 100, so that the support airbag 100 can contact the concrete through the rolling curtain plate 301 to achieve stable support for the concrete; among them, there are two 30s at the upper layer position of the expansion frame 200, which can meet the requirement of reserving a strip area in the middle position of the upper layer of the expansion frame 200, so as to meet the requirement that after the rolling curtain mechanism 300 and the expansion frame 200 are sequentially retracted and folded, they can be taken out from the reserved notch position on the upper layer of the poured concrete; Among them, the middle part of the top end of the support airbag 100 is fixedly communicated with an airbag seat 101. The middle part of the airbag seat 101 is fixedly connected with a lifting grip 104. The end part of the airbag seat 101 is fixedly provided with an air charging and discharging pipe 102 communicated with the support airbag 100. The other end part of the airbag seat 101 is fixedly installed with a pressure sensor 103. The end part of the pressure sensor 103 extends into the support airbag 100. The pressure sensor 103 is used to detect the internal air pressure of the support airbag 100. The length of the airbag seat 101 is less than that of the support airbag 100 and is communicated with the support airbag 100. The setting of the lifting grip 104 facilitates the later removal of the entire support device from the cast concrete. The air charging and discharging pipe 102 is convenient for connecting an external air pump through a hose to charge and discharge the support airbag 100. The pressure sensor 103 can monitor the air pressure in the support airbag 100 during the concrete pouring process, and control the air pump to charge and discharge the inside of the support airbag 100 according to the air pressure monitoring result to ensure the stable support force of the support airbag 100 on the external support airbag 100 and the rolling curtain mechanism 300, and avoid deformation and affect the pouring quality; Further, the end part of the inner side wall of the side plate 201 is fixedly connected with a guide strip 210. Both ends of the guide strip 210 are in a sharp cone shape. Guide grooves 308 matching the guide strip 210 are formed on both side walls of the rolling curtain plate 301. The cooperation of the guide grooves 308 and the guide strip 210 can enable the rolling curtain plate 301 to be sleeved on the outer wall of the guide strip 210 through the guide grooves 308 on the rolling curtain plate 301 after extending out of the hollow outer shell 302, realizing the limit and auxiliary support of the rolling curtain plate 301, and enabling the rolling curtain plate 301 to move along the horizontal direction, thereby ensuring the stability of the rolling curtain plate 301 when it is laid flat at the port position of the expansion frame 200; In a preferred embodiment, the driving device includes a winding and unwinding motor 306, a first pulley 304 and a second pulley 305. The winding and unwinding motor 306 is fixedly arranged at the corner inside the hollow outer shell 302. The first pulley 304 is fixedly connected to the end part of the winding shaft 303. A transmission belt 307 is sleeved on the outer wall of the first pulley 304. The second pulley 305 is fixedly connected to the rotating end of the winding and unwinding motor 306. The inner end part of the transmission belt 307 is in transmission connection with the outer wall of the second pulley 305. The bottom of one side inner wall of the rolling curtain opening 309 is rotatably connected with a second fixed pulley 311. The top of the other side inner wall of the rolling curtain opening 309 is rotatably connected with a first fixed pulley 310. The outer wall of the rolling curtain plate 301 sequentially bypasses the outer wall of the second fixed pulley 311 and the outer wall of the first fixed pulley 310 and extends out of the rolling curtain opening 309. By driving the second pulley 305 to rotate through the winding and unwinding motor 306, and the second pulley 305 drives the first pulley 304 to rotate through the transmission belt 307, the driving of the rolling curtain plate 301 to be wound or unwound on the winding shaft 303 can be achieved; Embodiment 3. On the basis of Embodiment 2, two expansion frames 200 are provided and arranged at intervals up and down. A telescopic component is arranged between the two expansion frames 200. The telescopic component is used for adjusting the distance between the upper and lower expansion frames 200. Installation slots 211 for installing the rolling curtain mechanism 300 are provided at the tops of the two panels 202 at the upper position and at the bottom of one of the side plates 202 at the lower position. By arranging two expansion frames 200 at the upper and lower positions and connecting them with a telescopic component between the two expansion frames 200, the overall height between the upper and lower expansion frames 200 can be adjusted. While meeting the pouring height requirements, during the shrinkage and folding process, better demoulding can be achieved between the outer wall of the expansion frame 200 and the inner wall of the concrete, so as to facilitate the overall removal and recycling of the support device.

[0031] Among them, the telescopic component includes a first telescopic plate 203 and a second telescopic plate 209. First telescopic slots 204 are opened on the opposite sides of the two side plates 201 at the upper and lower positions. The outer wall of the first telescopic plate 203 is slidably connected to the inner wall of the first telescopic slot 204. Second telescopic slots are opened on the opposite sides of the two panels 202 at the upper and lower positions. The outer wall of the second telescopic plate 209 is slidably connected to the inner wall of the second telescopic slot. Sliding grooves 205 are opened at the top and bottom of the first telescopic plate 203. A limiting slide plate 207 is slidably connected in the sliding groove 205. A connecting slide rod 206 is fixedly connected to the middle of the limiting slide plate 207. One end of the connecting slide rod 206 is fixedly connected to the inner wall of the first telescopic slot 204. An elastic compression spring 208 is fixedly connected between the limiting slide plate 207 and the inner wall of the sliding groove 205. Through the elastic resistance provided by the elastic compression spring 208, when the support airbag 100 expands, the two side plates 201 in the same group need to be pushed out and unfolded first, and then the telescopic component can be further driven to perform telescopic movement by the inflation and expansion of the support airbag 100. Using the thrust provided by the airbag, the upper and lower two expansion frames 200 move in opposite directions, driving the connecting slide rod 206 and the limiting slide plate 207 to move in the sliding groove 205. When the limiting slide plate 207 moves, it squeezes the elastic compression spring 208 to generate elastic resistance. In this way, when the support airbag 100 deflates and contracts, the upper and lower two groups of expansion frames 200 can be made to approach each other first by the elastic thrust provided by the elastic compression spring 208. In this way, the upper layer rolling curtain mechanism 300 can be separated from the concrete, and at the same time, it also plays a tearing role between the lower layer rolling curtain mechanism 300 and the concrete, facilitating subsequent demoulding. In this way, the rolling curtain mechanisms 300 at the upper and lower positions of the expansion frame 200 can be conveniently wound and retracted, so that the rolling curtain mechanism 300 will not block the folding of the side plates 201 in the expansion frame 200, and can drive the adjacent two side plates 201 to rotate and fold as the support airbag 100 continues to deflate and contract, making the adjacent two panels 202 approach each other and reduce the width, so as to match the size of the notch reserved in the upper layer of the concrete, so as to facilitate the support device to be taken out from the concrete notch for recycling. Among them, the panel 202 can be made of elastic plastic material, which can ensure hardness and produce a certain deformation at the same time. In this way, it is also convenient for the support airbag 100 to drive the panel 202 to have a slight deformation during the deflation and recovery process, making the demoulding from the inner wall of the concrete more convenient.

[0032] A construction method for casting a reusable road slab, using the above-mentioned reusable road slab casting support device, includes the following steps: Step 1: First lay the bottom formwork, and then tie the bottom formwork steel bars and beam steel bars in sequence. After all the steel bars are tied, a grooved casting area can be formed, and the support device is placed inside the tying area; Step 2: Connect the air pump to the airbag seat 101 through a hose, inflate the support airbag 100 to make it expand. The expansion frame 200 is subjected to an outward thrust provided by the support airbag 100 and expands and unfolds. The two side plates 201 in the same group in the expansion frame 200 rotate from the stacked state to the butt-jointed and unfolded state, so that the expansion frame 200 forms a rectangular frame structure with both upper and lower ends connected. At the same time, gas can be further inflated to make the support airbag 100 expand further in the up and down directions, driving the two groups of side plates 201 at the same side position to move in the opposite direction in the vertical direction, so that a relative movement is formed between the first telescopic plate 203 and the side plate 201 to unfold, achieving the adjustment of the height of the expansion frame 200. During this process, the side plate 201 drives the connecting slide bar 206 to move in the sliding groove 205, so that the limit slide plate 207 moves to squeeze the elastic compression spring 208. In this way, the relative movement between the side plate 201 and the first telescopic plate 203 can only occur after the two side plates 201 in each group are completely unfolded, so as to meet the requirement of adjusting the height after the expansion frame 200 is fully opened, and avoid the situation that the support airbag 100 cannot fully open the expansion frame 200; Step 3: After the expansion frame 200 expands and expands to the required shape, the rolling curtain mechanism 300 starts to operate. The winding and unwinding motor 306 drives the winding and unwinding shaft 303 to rotate, unwind the rolling curtain plate 301, and use the cooperation of the rolling curtain opening 309 on the hollow outer shell 302, the first fixed pulley 310 and the second fixed pulley 311 to guide the rolling curtain plate 301, so that after the rolling curtain plate 301 horizontally extends, it is slidably inserted into the inner wall of the side plate 201 through the guiding groove 308 at its side wall position, achieving the limit of the rolling curtain plate 301 at the port position of the expansion frame 200, so that the rolling curtain plate 301 can block the port of the expansion frame 200 by fitting the surface of the support airbag 100, thus completing the full expansion and use of the support device; Step 4: After the support device is fully unfolded, tie the steel bars at the upper layer of the support device, and then continuously pour at the position of the steel bars, so as to pour a hollow rectangular shell structure outside the support device. When pouring the uppermost layer, a long strip-shaped through hole is reserved in the middle position of the upper layer, so that after the pouring part solidifies, a notch for taking out the shrunk support device can be reserved. After the support device is taken out, finally use the steel bar truss floor slab to pour the notch position without formwork to form a seal.

[0033] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A recyclable road slab casting support device, characterized in that: include: An expansion frame (200), wherein the expansion frame (200) is hollow with upper and lower ends connected; A support airbag (100), wherein the support airbag (100) is arranged in the inner cavity of the expansion frame (200), and the support airbag (100) is used to drive the expansion frame (200) to expand and unfold or to shrink and fold; A rolling curtain mechanism (300) is arranged at the top end port and the bottom end port of the expansion frame (200), and the rolling curtain mechanism (300) is used to block the upper and lower end ports of the expansion frame (200).

2. A recyclable road slab casting support device according to claim 1, characterized in that: The expansion frame (200) comprises: Two groups of panels (202), the two groups of panels (202) are arranged in a front-to-back spacing; Two groups of side panels (201), the two groups of side panels (201) are respectively arranged at the two end positions between the two groups of panels (202), the opposite sides of the side panels (201) and the panels (202) are both inclined, each group of panels (202) has two, and the sides facing each other of two adjacent side panels (201) are rotatably connected by a hinge, and the inner positions between the side panels (201) and the panels (202) are rotatably connected by a hinge.

3. A recyclable road slab casting support device according to claim 2, characterized in that: Two expansion frames (200) are provided and are spaced apart from each other. A telescopic assembly is provided between the two expansion frames (200). The telescopic assembly is used to adjust the distance between the two expansion frames (200). The tops of the two panels (202) at the upper position and the bottom of one of the side panels (201) at the lower position are provided with installation slots (211) for installing a rolling shutter mechanism (300).

4. A recyclable road slab casting support device according to claim 3, characterized in that: The telescopic assembly comprises: The first telescopic plate (203) and the two side plates (201) at the upper and lower positions are both provided with A first telescopic slot (204), wherein the outer wall of the first telescopic plate (203) is slidably connected to the inner wall of the first telescopic slot (204); The second telescopic plate (209) has a second telescopic groove on one side opposite to the two panels (202) at the upper and lower positions, and the outer wall of the second telescopic plate (209) is slidably connected to the inner wall of the second telescopic groove.

5. A recyclable road slab casting support device according to claim 4, characterized in that: The top and bottom of the first telescopic plate (203) are both provided with sliding grooves (205), a limiting slide plate (207) is slidably connected in the sliding groove (205), a connecting slide bar (206) is fixedly connected to the middle of the limiting slide plate (207), one end of the connecting slide bar (206) is fixedly connected to the inner wall of the first telescopic slot (204), and an elastic compression spring (208) is fixedly connected between the limiting slide plate (207) and the inner wall of the sliding groove (205).

6. A recyclable road slab casting support device according to claim 5, characterized in that: The rolling curtain mechanism (300) comprises: A hollow shell (302), a winding shaft (303) is rotatably connected inside the hollow shell (302), a rolling shutter opening (309) is opened at the end of the side wall of the hollow shell (302), the hollow shell (302) is fixedly installed at the installation slot (211) position of the panel (202), a second fixed pulley (311) is rotatably connected to the bottom of the inner wall on one side of the rolling shutter opening (309), and a first fixed pulley (310) is rotatably connected to the top of the inner wall on the other side of the rolling shutter opening (309), and the outer wall of the rolling shutter plate (301) sequentially bypasses the outer wall of the second fixed pulley (311) and the outer wall of the first fixed pulley (310) and extends out of the rolling shutter opening (309); A rolling shutter plate (301), wherein the rolling shutter plate (301) is wound around the outer wall of the winding shaft (303), and one end of the rolling shutter plate (301) extends from the rolling shutter opening (309) to the outside of the hollow housing (302); A driving device is installed inside the hollow housing (302), and is used to control the rotation of the unwinding shaft (303).

7. A recyclable road slab casting support device according to claim 6, characterized in that: The driving device comprises: A coiled discharge motor (306), wherein the coiled discharge motor (306) is fixedly arranged at a corner inside the hollow housing (302); A first pulley (304), the first pulley (304) is fixedly connected to the end of the winding and unwinding shaft (303), and a transmission belt (307) is sleeved on the outer wall of the first pulley (304); The second pulley (305) is fixedly connected to the rotating end of the winding discharge motor (306), and the inner end of the transmission belt (307) is transmission-sleeved with the outer wall of the second pulley (305).

8. A recyclable road slab casting support device according to claim 7, characterized in that: The middle part of the top end of the support airbag (100) is fixedly connected to an airbag seat (101), the middle part of the airbag seat (101) is fixedly connected to a lifting handle (104), the end of the airbag seat (101) is fixedly provided with an inflation and deflation air pipe (102) connected to the support airbag (100), and the other end of the airbag seat (101) is fixedly installed with an air pressure sensor (103), the end of the air pressure sensor (103) extends into the interior of the support airbag (100), and the air pressure sensor (103) is used to detect the air pressure inside the support airbag (100).

9. A recyclable road slab casting support device according to claim 8, characterized in that: The end of the inner wall of the side plate (201) is fixedly connected with a guide strip (210), both ends of the guide strip (210) are in a pointed cone shape, and both side walls of the rolling shutter plate (301) are provided with guide grooves (308) matching the guide strip (210).

10. A recyclable road slab casting construction method, using a recyclable road slab casting support device as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: First lay the bottom formwork, then tie the bottom formwork reinforcement and beam reinforcement in sequence. After all the reinforcements are tied, a groove-shaped casting area can be formed, and the support device is placed inside the tying area; Step 2: connect the air pump to the airbag seat (101) through a hose, inflate the support airbag (100) to expand it, and the expansion frame (200) is expanded and unfolded by the outward thrust provided by the support airbag (100). The two side plates (201) of the same group in the expansion frame (200) are rotated from a stacked state to a docked and unfolded state, so that the expansion frame (200) forms a rectangular frame structure with upper and lower ends connected. At the same time, gas can be further injected to further expand the support airbag (100) in the upper and lower directions, driving the two groups of side plates (201) at the same side position to move in the opposite direction in the vertical direction, so that the first telescopic plate (203) and the side plate (203) are aligned with each other. The plates (201) form relative movement and expand to adjust the height of the expansion frame (200). During this process, the side plate (201) drives the connecting slide bar (206) to move in the sliding groove (205), so that the limiting slide plate (207) moves to squeeze the elastic compression spring (208). In this way, the relative movement between the side plate (201) and the first telescopic plate (203) can be carried out only after the two side plates (201) in each group are fully expanded, so as to meet the requirement of adjusting the height after the expansion frame (200) is fully expanded, and avoid the situation where the support airbag (100) cannot fully expand the expansion frame (200); Step three, after the expansion frame (200) is expanded to the desired shape, the rolling mechanism (300) starts to start, the rolling motor (306) drives the unwinding shaft (303) to rotate, and unwinds the rolling plate (301). The rolling opening (309) on the hollow shell (302) and the cooperation of the first fixed pulley (310) and the second fixed pulley (311) are used to guide the rolling plate (301), so that the rolling plate (301) is extended horizontally and then slides and plugs with the guide groove (308) at the side wall position and the guide strip (210) on the inner wall of the side plate (201), so as to limit the position of the rolling plate (301) at the port of the expansion frame (200), so that the rolling plate (301) can fit the surface of the support airbag (100) to block the port of the expansion frame (200), thereby completing the full deployment of the support device; Step 4. After the support device is unfolded, tie the steel bars at the upper position of the support device, and then continuously cast at the steel bar position, so as to cast a hollow rectangular shell structure outside the support device. When casting the uppermost position, reserve a long through hole in the middle of the upper layer, so that after the casting part solidifies, a gap can be reserved for taking out the shrunk support device. After the support device is taken out, finally use the steel truss floor slab to cast the gap position without formwork to form a blockage.

Images