Safety protection system of fabricated concrete building and construction method

Abstract

The invention relates to a safety protection system and a construction method of an assembly type concrete building, the safety protection system comprises two rails which are detachably connected to the opposite sides of one-span two-row columns respectively, and the length of the rails is the length of at least two construction sections; the multiple rail cars are arranged on the two rails in a sliding mode, at least two rail cars are arranged on each rail, and the adjacent rails are detachably connected through connecting rods; the width of the safety flat net is equal to the length of one construction section, a plurality of steel wire ropes are fixed in the width direction of the safety flat net at intervals, and the two ends of each steel wire rope are detachably connected with rail cars located on the two rails respectively; the limiting pieces are detachably arranged on the rails and located at the two ends of the rail cars on the rails. According to the safety protection system, the climbing operation difficulty is reduced, the time needed for disassembling and assembling the safety flat net is saved, the construction period is shortened, the labor and mechanical cost is reduced, the safety flat net does not need to be disassembled repeatedly in the protection process, and the use efficiency of the safety flat net is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated concrete buildings, and in particular to a safety protection system and a construction method for prefabricated concrete buildings. Background Art

[0002] In the construction of prefabricated concrete plants, the installation of steel truss floor decking is a key link in safety risk control. Since the floor height of industrial plants is generally 8 to 20 meters, workers face two major risks when laying floor decking at high altitudes:

[0003] Risk of personnel falling: Traditional scaffolding protection systems are difficult to adapt to large-span working surfaces;

[0004] Risk of being hit by objects: The deadweight of a single floor slab can reach 200-300kg, and it is easy to slip during the installation process.

[0005] In response to these risks, in addition to requiring workers to wear double-hook safety belts throughout the project, active defense measures have been added: a flame-retardant safety flat net (mesh density not less than 2000 mesh / 100cm) is hung about 1.8 meters below the working layer. 2 ), and are tensioned and fixed through steel anchor rings and steel wire ropes embedded in the cast-in-place columns to form a continuous anti-fall barrier.

[0006] For the hanging construction of the safety net below the working floor, the commonly used method is to embed steel bar anchor rings in the cast-in-place columns to achieve the overall laying of the lower part of the floor deck. However, in the actual implementation, this process faces the following problems:

[0007] (1) The operation is difficult, and the overlapping of processes causes a surge in costs and extends the construction period.

[0008] Since the safety net needs to be installed before the steel truss floor deck is installed, after installation, other processes that require high-altitude equipment construction (such as formwork support work in the core area of ​​the lower beam column of the floor deck and installation of electromechanical pipelines) will not be able to proceed, forcing the safety net to go through multiple cycles of "installation → removal → restoration" (the average number of removals for a single project is as high as 4 to 6 times). Therefore, a single construction operation requires multiple operators to repeatedly climb the heights with the help of multiple climbing equipment, which significantly increases the difficulty of manpower and equipment scheduling. At the same time, multiple climbing operations will also greatly increase labor and machinery costs and extend the construction period.

[0009] (2) Impairment of safety protection effectiveness.

[0010] Frequent installation and removal operations not only increase construction costs, but also damage the integrity of the safety net. According to relevant specifications, a continuous horizontal safety net enclosed system should be maintained below the construction layer, but in actual projects, due to repeated installation and removal, the protective gaps created may pose a risk of falling.

[0011] Therefore, the existing embedded anchor ring technology can no longer meet the needs of "rapid construction and dynamic protection" for prefabricated factories. Summary of the invention

[0012] 1. Technical issues to be resolved

[0013] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a safety protection system and construction method for prefabricated concrete buildings, which solve the technical problems of the existing pre-buried anchor ring process, such as high difficulty in operation, cost surge, extended construction period and loss of safety protection effectiveness caused by cross-process.

[0014] (II) Technical solution

[0015] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0016] In a first aspect, an embodiment of the present invention provides a safety protection system for a prefabricated concrete building, comprising:

[0017] Two tracks, which can be detachably connected to opposite sides of two columns of a span forming a prefabricated concrete building, and the tracks extend horizontally, and the length of the tracks is at least the length of two construction sections;

[0018] A plurality of rail cars are slidably arranged on the two rails, each rail is provided with at least two rail cars and adjacent rail cars are detachably connected via a connecting rod;

[0019] A safety flat net, the width of which is the length of a construction section, with a plurality of steel wire ropes fixed at intervals along the width direction of the safety flat net, and the two ends of the steel wire ropes are detachably connected to the rail cars located on the two rails;

[0020] The limiting parts are detachably arranged on each of the tracks and are located at both ends of the track vehicle on each of the tracks to limit the forward and backward movement directions of the track vehicle.

[0021] According to the present invention, the longitudinal cross-section of the track is C-shaped;

[0022] The rail vehicle can be inserted into the end socket of the rail;

[0023] The limiting member is detachably connected to the track in a horizontal orientation and can be switched between a limiting state and an unlocking state;

[0024] When the limiting member is in a limiting state, the limiting member is inserted into the track to limit the two ends of the plurality of track vehicles;

[0025] When the limiting member is in an unlocked state, the limiting member leaves the track, and the track vehicle can slide along the track.

[0026] According to the present invention, a threaded hole is provided on the side wall of the track.

[0027] The limiting member is a bolt, and the limiting member is threadedly connected in the threaded hole.

[0028] According to the present invention, the rail vehicle comprises a mounting frame, a first wheel body, a connecting column and a connecting plate;

[0029] The first wheel body is rotatably mounted on the mounting frame, the connecting column is vertically fixed to the mounting frame, and the connecting plate is fixed to the connecting column; when the mounting frame and the first wheel body are inserted into the track, the connecting column and the connecting plate extend out of the track;

[0030] The end of the connecting rod is detachably connected to the connecting plate via a fastener;

[0031] The end of the steel wire rope is connected to a shackle and is detachably connected to the connecting column through the shackle.

[0032] According to the present invention, a connecting ring is provided on the connecting column, and the shackle is connected to the connecting ring;

[0033] The connecting plate is provided with a first connecting hole, and the end of the connecting rod is provided with a second connecting hole. The first connecting hole and the second connecting hole can be penetrated by the fastener for connection.

[0034] According to the present invention, two tractors are also included;

[0035] The two tractors are respectively slidably arranged on the two rails, and are respectively detachably connected to the rail vehicles located at one end of the two rails through the connecting rods. The tractors are used to tow at least two rail vehicles to move along the rails.

[0036] According to the present invention, it also includes a mounting frame and a track connector;

[0037] The mounting frame is detachably connected to the column via fasteners;

[0038] The track connector is detachably connected to the top of the mounting frame by the fastener, and the longitudinal cross-section of the track connector is C-shaped;

[0039] The rail can be inserted into the end opening of the rail connecting member and can be detachably connected to the rail connecting member by the fastener.

[0040] According to the present invention, the track comprises two sections of branch tracks connected end to end, and the length of each section of the branch track is the length of one construction section.

[0041] In a second aspect, the present invention further provides a construction method, which is applied to the safety protection system of the prefabricated concrete building, and comprises the following construction steps:

[0042] S1. Arrange the safety protection system on two columns of one span of the prefabricated concrete building;

[0043] S2. When the safety net is located below the tops of the two columns in the current construction section, the floor is installed between the tops of the two columns in the current construction section; when the rail vehicle pulls the safety net along the track to the bottom between the tops of the two columns in the next construction section, the two columns in the current construction section are constructed;

[0044] S3, after the construction of the floor and the two rows of columns of the current construction section is completed, the rail vehicle pulls the safety net along the track to move to the next current construction section;

[0045] S4, dismantle the branch track located in the previous construction section, and install the dismantled branch track on the opposite side of the two columns of the next construction section, so that the branch tracks located in the current construction section and the next construction section are connected end to end to form the track, and adjust the limiter to the two ends of at least two rail vehicles located on each track;

[0046] S5, repeat steps S2-S4;

[0047] S6. After the construction of the whole floor between the tops of the two columns and the two columns is completed, the safety protection system is removed and the safety protection system is arranged on the other span of the two columns;

[0048] S7. Repeat steps S2-S6 until all floor construction is completed.

[0049] (III) Beneficial effects

[0050] The safety protection system of the assembled concrete building of the present invention has the following beneficial effects:

[0051] The present safety protection system can be detachably arranged on the opposite side of a span of two columns, so that the safety net is located below the current construction section between the tops of the two columns of a span for protection, and when the formwork construction and electromechanical pipeline laying of the core area of ​​the beam-column node are carried out on the column, the safety net is pulled by the rail car to move along the track to the next construction section to avoid the column under construction, and after the column construction is completed, the safety net can be moved to the current construction section for protection again, so as to avoid multiple construction workers repeatedly climbing up to disassemble and install the safety net when working on the current construction section. Therefore, the present safety protection system reduces the difficulty of climbing operations, saves the time required for disassembling and installing the safety net, shortens the construction period, and reduces labor and machinery costs. At the same time, the safety net can be moved horizontally with the change of the current construction section, and the protection operation when the entire floor between the two columns of a span can be realized by hanging it once, without the need to fully lay it between the two columns of a span, which reduces the cost of the safety net, further saves the installation time of the safety net, and thus shortens the construction period. Furthermore, the safety net does not need to be disassembled repeatedly during the protection process, so its integrity can be guaranteed, that is, its effectiveness and safety protection can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic diagram of the layout of the safety protection system of the prefabricated concrete building of the present invention;

[0053] Figure 2 for Figure 1 Schematic diagram when the floor is not laid;

[0054] Figure 3 for Figure 1 Side view of

[0055] Figure 4 for Figure 2 A partial schematic diagram of

[0056] Figure 5 This is a schematic diagram of the track assembly;

[0057] Figure 6 for Figure 5 The main view;

[0058] Figure 7 It is a schematic diagram of the assembly of the track and the column;

[0059] Figure 8 It is a schematic diagram of the assembly of the track, the mounting frame and the track connector;

[0060] Fig. 9 is a schematic diagram of the mounting frame;

[0061] Fig.10 is a schematic diagram of a track connection;

[0062] Fig.11 is a schematic diagram of a rail car;

[0063] Fig.12 This is the connection diagram of the track workshop;

[0064] Fig.13 A schematic diagram of a tractor;

[0065] Fig.14 It is a schematic diagram of the process of moving the safety net to the next current construction section in step S3 and installing the branch rail after being removed in step S4 on the opposite side of a span of two columns in the next construction section.

[0066] [Description of Reference Numerals]

[0067] 1: track; 11: branch track;

[0068] 2: rail car; 21: first bracket; 22: first wheel body; 23: connecting column; 231: connecting ring; 24: connecting plate; 241: first connecting hole;

[0069] 3: connecting rod; 31: second connecting hole;

[0070] 4: Safety flat network;

[0071] 5: Wire rope;

[0072] 6: Limiting parts;

[0073] 7: Fasteners;

[0074] 8: tractor; 81: motor;

[0075] 91: mounting frame; 92: track connecting piece; 921: third connecting hole;

[0076] 101: Column; 102: Precast main beam; 103: Precast secondary beam; 104: Core area of ​​beam-column joint; 105: Steel truss floor deck;

[0077] A: The length of a construction section. DETAILED DESCRIPTION

[0078] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below in conjunction with the accompanying drawings through specific embodiments. Figure 2 The orientation is used as a reference.

[0079] See also Figure 1-14 A safety protection system for a prefabricated concrete building proposed in an embodiment of the present invention is particularly suitable for a safety protection system for a prefabricated concrete industrial plant. The safety protection system includes two rails 1, multiple rail cars 2, a safety net 4 and a limiter 6.

[0080] The two tracks 1 can be detachably connected to opposite sides of a span of two columns 101 forming a prefabricated concrete building, and the tracks 1 extend horizontally. The length of the tracks 1 is at least the length of two construction sections and is an integer multiple of the length A of one construction section.

[0081] A plurality of rail vehicles 2 are slidably arranged on two rails 1, at least two rail vehicles 2 are arranged on each rail 1 and adjacent rail vehicles 2 are detachably connected via connecting rods 3, so that at least two rail vehicles 2 are connected in series as a whole and move synchronously along the rail 1 without changing the distance between two adjacent rail vehicles 2.

[0082] The width of the safety net 4 is the length A of a construction section. A plurality of steel wire ropes 5 are fixed at intervals along the width direction of the safety net 4. The two ends of the steel wire ropes 5 are detachably connected to the rail cars 2 located on the two tracks 1. Under the limitation of the distance between two adjacent rail cars 2 by the connecting rod 3, the safety net 4 can be horizontally unfolded and located below the current construction section between the tops of two columns 101 in a span, and provide safety protection for the current construction section. The rail car 2 can pull the safety net 4 to move the next construction section between the tops of two columns 101 in a span to avoid the columns 101 under construction or to shift the safety net 4 after the floor installation of the current construction section is completed. Among them, the two ends of the plurality of steel wire ropes 5 are connected to at least two rail cars 2 located on each track 1 in a one-to-one correspondence, so as to stably connect the safety net 4 to the rail car 2.

[0083] The limiting members 6 are detachably arranged on each track 1 and are located at both ends of at least two rail cars 2 on each track 1 to limit the forward and backward movement directions of the rail cars 2 on the track 1, thereby preventing the rail cars 2 from driving the safety net 4 to shift, so that the safety net 4 is always located in the protective position of the current construction section, thereby ensuring the protective effect.

[0084] Based on the above settings, the safety protection system can be detachably arranged on the opposite side of a span of two columns 101, so that the safety net 4 is located below the top of the span of two columns 101 in the current construction section for protection, and when the formwork construction of the core area 104 of the beam-column node and the laying of electromechanical pipelines are carried out on the column 101, the rail car 2 pulls the safety net 4 along the track 1 to the next construction section to avoid the column 101 under construction, and after the construction of the column 101 is completed, the safety net 4 can be moved to the current construction section for protection again, so as to avoid multiple construction workers repeatedly using climbing to disassemble and assemble the safety net 4 when working on the current construction section. Therefore, the safety protection system reduces the difficulty of climbing operations, saves the time required for disassembling and assembling the safety net, shortens the construction period, and reduces labor and machinery costs. At the same time, the safety net 4 can be moved with the change of the current construction section, and the protection operation when laying the entire floor between two columns 101 in one span can be realized by hanging it once, without the need to fully lay the two columns 101 in one span, which reduces the cost of the safety net 4 and further saves the installation time of the safety net 4, thereby shortening the construction period. Furthermore, the safety net 4 does not need to be disassembled repeatedly during the protection process, and its integrity can be guaranteed, that is, its use efficiency and safety protection can be guaranteed.

[0085] See also Figure 2 Furthermore, the track 1 includes two sections of branch tracks 11 connected end to end, and the length of each section of the branch track 11 is the length A of one construction section. The two branch tracks 11 are respectively located below the current construction section and the next construction section between the tops of the two columns 101 in a span. When the installation of the floor between the tops of the two columns 101 in a span in the current construction section is completed, the branch track 11 installed in the current construction section can be disassembled and then installed in the preparatory construction section in front of the next construction section, so that when constructing the floor between the tops of the two columns 101 in a span, the two branch tracks 11 can be alternately disassembled and connected end to end to form the track 1, which reduces the length of the track 1 that needs to be laid, reduces the construction cost, shortens the laying time, and thus shortens the construction period.

[0086] Furthermore, the construction method of the safety protection system includes the following steps:

[0087] S1. Arrange a safety protection system on two columns 101 of a prefabricated concrete building.

[0088] S2. When the safety net 4 is located below the top of the two columns 101 in one span of the current construction section, the floor is installed between the top of the two columns 101 in one span of the current construction section, that is, the reinforcement of the floor is tied and the concrete is poured. When the rail vehicle 2 pulls the safety net 4 along the track 1 to move below the top of the two columns 101 in one span of the next construction section, the two columns 101 in one span of the current construction section are constructed, that is, the reinforcement and formwork of the beam-column node core area 104 on the two columns 101 in one span of the current construction section are constructed, and the electromechanical equipment is laid.

[0089] See also Fig.14 , S3, after the construction of the floor and one span and two rows of columns 101 of the current construction section is completed, the rail vehicle 2 pulls the safety net 4 along the track 1 to move to the next current construction section.

[0090] S4. Remove the branch track 11 located in the previous construction section, and install the removed branch track 11 on the opposite side of a span of two columns 101 in the next construction section, so that the branch tracks 11 located in the current construction section and the next construction section are connected end to end to form a track 1. Subsequently, adjust the limit members 6 to the two ends of at least two rail vehicles 2 on the branch track 11 located in the current construction section to recycle the two branch tracks 11.

[0091] S5. Repeat steps S2-S4.

[0092] S6. After the construction of the entire floor between the tops of the two columns 101 in one span and the two columns 101 in one span is completed, the safety protection system is removed and the safety protection system is arranged on the two columns 101 in another span.

[0093] S7. Repeat steps S2-S6 until all floor construction is completed.

[0094] Based on the above construction method, the safety protection system can recycle two branch rails 11 and a safety net 4 when the entire floor is installed, so as to reduce the overall cost and shorten the construction time.

[0095] Specifically, in step S4, the floor reinforcement binding, the construction of the column 101 and the pouring of the floor concrete are carried out in sequence. The reinforcement binding and the pouring of the floor concrete form the reinforcement truss floor deck 105.

[0096] Specifically, to ensure the protective performance of the safety net 4:

[0097] Safety flat net 4 is a flame retardant safety flat net for construction, with a mesh density of not less than 2000 meshes

[0098] / 100cm 2The quality should meet the requirements of the GB5725 standard for "Safety Net". The steel wire rope 5 is a plastic-coated steel wire rope with a diameter of not less than 12 mm to meet the safety protection requirements of high-altitude operations. The safety factor should be ≥14 to ensure that it can withstand dynamic impact loads. The end of the steel wire rope 5 is made into a rope ring, which is detachably connected to the rail car 2 through the rope ring.

[0099] See also Figure 7 Furthermore, the longitudinal cross-section of the track 1 is C-shaped, and the top and both ends of the track 1 are open.

[0100] The track vehicle 2 can be inserted into the end socket of the track 1 to conveniently install the track vehicle 2 on the track 1 and can slide in the track 1. The limiter 6 is horizontally oriented and detachably connected to the track 1 and can switch between a limit state and an unlocked state.

[0101] When the limiting member 6 is in the limiting state, the limiting member 6 is inserted into the track 1 to limit the two ends of the rail vehicle 2, that is, to limit the forward and backward movement direction of the rail vehicle 2 on the track 1. When the limiting member 6 is in the unlocking state, the limiting member 6 leaves the track 1, and the rail vehicle 2 can pull the protective net 4 to slide along the track 1.

[0102] When in use, when the limiter 6 is in the limit state, the safety net 4 is located below the top of the two columns 101 in one span of the current construction section, preventing the rail vehicle 2 from driving the safety net 4 to move, so as to ensure the protection function of the safety net 4. When the limiter 6 is in the unlocked state, the rail vehicle 2 can pull the safety net 4 along the track 1 to the bottom of the next construction section between the top of the two columns 101 in one span, and the rail vehicle 2 pulls the safety net 4 along the track 1 to the next current construction section.

[0103] Specifically, a threaded hole is provided on the side wall of the track 1 .

[0104] The limiting member 6 is a bolt, and the limiting member 6 is threadedly connected in the threaded hole. The limiting member 6 can be switched between a limiting state and an unlocking state by rotating the limiting member 6.

[0105] Preferably, two limiting members 6 are provided at both ends of the rail vehicle 2 on each track 1 , and the two limiting members 6 are relatively arranged on both sides of the track 1 to further enhance the limiting effect on the rail vehicle 2 .

[0106] Preferably, the track 1 is integrally formed of a galvanized steel plate and its surface is treated with anti-corrosion to ensure its supporting strength and reliability.

[0107] See also Fig.11 Further, the rail vehicle 2 includes a first bracket 21 , a first wheel body 22 , a connecting column 23 and a connecting plate 24 .

[0108] The first wheel body 22 is rotatably arranged on the first bracket 21 through a bearing, the connecting column 23 is vertically oriented and fixed on the first bracket 21, and the connecting plate 24 is horizontally oriented and fixed on the connecting column 23. When the first bracket 21 and the first wheel body 22 are inserted into the track 1 through the end socket of the track 1, the first wheel body 22 can slide along the track 1, the connecting column 23 and the connecting plate 24 can extend upward outside the track 1, and the connecting column 23 and the connecting plate 24 can be detachably connected to the wire rope 5 and the connecting rod 3 respectively.

[0109] The end of the connecting rod 3 is detachably connected to the connecting plate 24 through a fastener 7. The rope ring at the end of the wire rope 5 is connected to the shackle and is detachably connected to the connecting column 23 through the shackle to facilitate disassembly.

[0110] Specifically, a connecting ring 231 is provided on the connecting column 23, and the shackle is detachably connected to the connecting ring 231. A first connecting hole 241 is provided on the connecting plate 24, and a second connecting hole 31 is provided at the end of the connecting rod 3. The first connecting hole 241 and the second connecting hole 31 can be penetrated with a fastener 7 for connection. In this way, the connecting rod 3 and the wire rope 5 can be conveniently assembled and disassembled from the rail vehicle 2, so as to shorten the process and improve the construction efficiency.

[0111] Preferably, the connecting rod 3 includes a body made of round steel and galvanized steel plates welded to both ends of the body, and a second connecting hole 31 is provided on the galvanized steel plate to ensure the connection strength of the connecting rod 3 .

[0112] See also Fig.13 Furthermore, in order to realize the movement of the rail vehicle 2, the safety protection system also includes two tractors 8 for towing the rail vehicle 2 along the track 1.

[0113] The two tractors 8 are respectively slidably arranged on the two rails 1 and are respectively detachably connected to the rail vehicles 2 at one end of the two rails 1 through connecting rods 3. The tractors 8 pull at least two rail vehicles 2 as a whole to move along the rails 1 through the connected rail vehicles 2.

[0114] The tractor 8 includes a second bracket, a second wheel body and a drive motor.

[0115] The second wheel body is rotatably arranged on the second bracket through a bearing, the main body of the driving motor is fixed on the second bracket, the driving end of the driving motor is connected to the second wheel body, and the driving motor is used to drive the second wheel body to rotate.

[0116] Optionally, one end of the connecting rod 3 connected to the tractor 8 is fixed to the second bracket to facilitate the overall loading and unloading with the tractor 8.

[0117] Preferably, a controller is provided on the tractor 8, and the controller is connected to the drive motor through a wire. The construction personnel send instructions to the controller through a remote controller on the ground, and the controller controls the drive motors on the two tractors 8 to drive the second wheel body to rotate, so that the two tractors 8 respectively pull the rail vehicles 2 on the two tracks 1 to move along the track 1, so as to facilitate the construction personnel to operate and avoid high-altitude operations.

[0118] See also Figure 8-10 Furthermore, in order to realize the loading and unloading of the track 1, the safety protection system also includes a mounting frame 91 and a track connector 92.

[0119] The mounting frame 91 is detachably connected to the column 101 by the fastener 7. The track connector 92 is detachably connected to the top of the mounting frame 91 by the fastener 7. The track connector 92 has a C-shaped longitudinal section with openings at the top and both ends. The track 1 can be inserted through the end opening of the track connector 92 and can be detachably connected to the track connector 92 by the fastener 7.

[0120] When installing the track 1, first connect the mounting frame 91 to the column 101 through the fastener 7, and then connect the track connector 92 to the top of the mounting frame 91. Subsequently, insert the track 1 from the end opening of the track connector 92 and then connect it to the track connector 92 through the fastener 7 so that the track 1 is supported on the mounting frame 91.

[0121] When removing track 1, just do the reverse operation.

[0122] Specifically, the longitudinal cross-section of the mounting frame 91 is a right triangle, the first right-angled wall of the mounting frame 91 can fit the column 101, and the second right-angled wall can support and connect the track connector 92 to ensure load-bearing stability.

[0123] The first mounting hole is provided on the first right-angle wall and the second right-angle wall of the mounting frame 91. The first mounting hole on the first right-angle wall can be penetrated by a fastener 7 and detachably connected to the column 101. Preferably, an M20 chemical anchor bolt is penetrated in the first mounting hole on the first right-angle wall and connected to the column 101.

[0124] Preferably, the mounting frame 91 is made of galvanized steel plate to ensure supporting strength.

[0125] Specifically, the track connector 92 includes a bottom plate and two inverted L-shaped plates fixed to the bottom plate and arranged opposite to each other.

[0126] A gap is formed between the tops of the two inverted L-shaped plates. The bottom plate fits the second right-angle wall of the mounting frame 91, and the third connection hole 921 opened on the bottom plate and the first mounting hole on the second right-angle wall can be sequentially penetrated with fasteners 7 to connect to the mounting frame 91. When the track 1 is inserted between the two inverted L-shaped plates, the third connection holes 921 opened on the side walls of the two inverted L-shaped plates and the second mounting holes opened on the side walls of the track 1 can be penetrated with fasteners 7 to detachably connect the track 1. The top opening of the track 1 and the gap between the two inverted L-shaped plates can extend and allow the connecting column 23 and the connecting plate 24 of the rail car 2 to move.

[0127] Preferably, the fasteners 7 are all bolts for easy assembly and disassembly.

[0128] It should be noted that all components in this safety protection system can be detachably connected to facilitate loading and unloading.

[0129] Further, based on the above settings, when the safety protection system is used for the protection of prefabricated concrete industrial plants, step S1 also includes the following steps:

[0130] S101. Determine the length A of a construction section based on the span of the plant structure, i.e., the distance between two columns 101 in one span, and the width of the steel truss floor deck 105 laid at a time. Process the steel wire rope 5 and safety net 4 of required length and width, and process the various components of the safety protection system based on the structural force analysis.

[0131] S102, construction of factory building foundation and cast-in-place column 101, and simultaneous prefabrication of prefabricated main beam 102 and prefabricated secondary beam 103.

[0132] S103. After the casting of the columns 101 on both sides of a span, i.e., two rows of columns 101 in one span, is completed and the curing strength of the columns 101 reaches the design requirements, the prefabricated main beam 102 is first hoisted between the adjacent columns 101 in each row of columns 101, and the prefabricated secondary beam 103 is hoisted between the two rows of columns 101 in one span.

[0133] S104. After the hoisting of the prefabricated main beam 102 and the prefabricated secondary beam 103 of a flow section is completed, the mounting frame 91 is connected to the side wall of the two-row column 101 of the current construction section and the next construction section. The mounting frame 91 is located at a position with a spacing of 1.8m below the steel truss floor deck 105 to be installed between the tops of the two-row column 101 of the span.

[0134] S105 , installing the track connector 92 on the mounting frame 91 .

[0135] S106, respectively, connect the two branch rails 11 end to end and install them on a rail connector 92 spanning two columns of columns 101 to form two rails 1, and the length of the rail 1 is at least the length of two construction sections.

[0136] S107. The surveying personnel re-measure the elevation and plane position of track 12 to ensure that the installation position is correct.

[0137] S108, insert the rail vehicle 2 from the socket at one end of the rail 1, and install the tractor 8 after all the rail vehicles 2 on each rail 1 are installed.

[0138] S109, connecting the adjacent rail vehicles 2 on each track 1 through the connecting rod 3, and connecting the tractor 8 and the rail vehicle 2 at one end close to the next construction section through the connecting rod 3, so that the tractor 8 and at least two rail vehicles 2 on each track 1 are connected as a whole.

[0139] S120. Limiting members 6 are provided at both ends of at least two rail vehicles 2 on the branch track 11 of the current construction section to limit the forward and backward movement directions of at least two rail vehicles 2, to prevent the rail vehicles 2 from accidentally sliding off the track, and to avoid the rail vehicles 2 from causing the safety net 4 to shift.

[0140] S121. Check the installation status of each component, especially the connection status of the fasteners between the components. After checking that everything is correct, the operator controls the tractor 8 to move the rail vehicle 2 through the remote control to test the driving status of the rail vehicle 2.

[0141] S122. Arrange steel wire ropes 5 at intervals along the width direction of the safety net 4 on the ground. The steel wire ropes 5 are fastened to the safety net 4 with iron wires. The spacing between adjacent steel wire ropes 5 is preferably 2 m.

[0142] S123. Four climbing devices and operators fix the steel wire rope 5 on the safety net 4 to the connecting column 23 of the rail car 2, and ensure that the two ends of the safety net 4 in the length direction are installed symmetrically.

[0143] S124. After all components of the safety protection system are installed, the operator conducts final testing and adjustments to ensure that the safety net 4 can move forward safely, smoothly and at a constant speed under the traction of the rail vehicle 2.

[0144] Therefore, based on the above steps, the layout of the safety protection system can be completed conveniently.

[0145] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0146] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0147] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A safety protection system for assembled concrete buildings, characterized in that: include: Two rails (1) can be detachably connected to opposite sides of a span of two columns (101) forming a prefabricated concrete building, and the rails (1) extend horizontally, and the length of the rails (1) is at least the length of two construction sections; A plurality of rail vehicles (2) are slidably arranged on the two rails (1), each rail (1) is provided with at least two rail vehicles (2), and adjacent rail vehicles (2) are detachably connected via connecting rods (3); A safety net (4) having a width equal to the length (A) of a construction section, a plurality of steel wire ropes (5) are fixed at intervals along the width direction of the safety net (4), and two ends of the steel wire ropes (5) are respectively detachably connected to the rail vehicles (2) located on the two rails (1); A limiting member (6) is detachably arranged on each track (1) and is located at both ends of at least two track vehicles (2) on each track (1) to limit the forward and backward movement direction of the track vehicle (2).

2. The safety protection system for prefabricated concrete buildings according to claim 1, characterized in that: The longitudinal cross section of the track (1) is C-shaped; The rail vehicle (2) can be inserted into the end socket of the rail (1); The limiting member (6) is detachably connected to the track (1) in a horizontal orientation and is capable of switching between a limiting state and an unlocking state; When the limiting member (6) is in a limiting state, the limiting member (6) is inserted into the track (1) to limit the two ends of the plurality of track vehicles (2); When the limiting member (6) is in an unlocked state, the limiting member (6) leaves the track (1), and the track vehicle (2) can slide along the track (1).

3. The safety protection system for prefabricated concrete buildings according to claim 2, characterized in that: The side wall of the track (1) is provided with a threaded hole. The limiting member (6) is a bolt, and the limiting member (6) is threadedly connected in the threaded hole.

4. The safety protection system for prefabricated concrete buildings according to claim 2, characterized in that: The rail vehicle (2) comprises a first bracket (21), a first wheel body (22), a connecting column (23) and a connecting plate (24); The first wheel body (22) is rotatably arranged on the first bracket (21), the connecting column (23) is vertically fixed on the first bracket (21), and the connecting plate (24) is fixed on the connecting column (23); when the first bracket (21) and the first wheel body (22) are inserted into the track (1), the connecting column (23) and the connecting plate (24) extend out of the track (1); The end of the connecting rod (3) is detachably connected to the connecting plate (24) via a fastener (7); The end of the steel wire rope (5) is connected to a shackle and is detachably connected to the connecting column (23) via the shackle.

5. The safety protection system for prefabricated concrete buildings according to claim 4, characterized in that: The connecting column (23) is provided with a connecting ring (231), and the shackle is connected to the connecting ring (231); The connecting plate (24) is provided with a first connecting hole (241), the end of the connecting rod (3) is provided with a second connecting hole (31), and the first connecting hole (241) and the second connecting hole (31) can be penetrated by the fastener (7) for connection.

6. The safety protection system for prefabricated concrete buildings according to claim 1, characterized in that: Also included are two tractors (8); The two tractors (8) are respectively slidably arranged on the two rails (1), and are respectively detachably connected to the rail vehicles (2) located at one end of the two rails (1) through the connecting rods (3). The tractors (8) are used to tow at least two rail vehicles (2) to move synchronously along the rails (1).

7. The safety protection system for prefabricated concrete buildings according to claim 1, characterized in that: It also includes a mounting frame (91) and a track connecting member (92); The mounting frame (91) is detachably connected to the column (101) via a fastener (7); The track connection member (92) is detachably connected to the top of the mounting frame (91) via the fastener (7), and the longitudinal cross-section of the track connection member (92) is C-shaped; The track (1) can be inserted into the end opening of the track connecting member (92) and can be detachably connected to the track connecting member (92) via the fastener (7).

8. The safety protection system for prefabricated concrete buildings according to any one of claims 1 to 7, characterized in that: The track (1) comprises two sections of branch tracks (11) connected end to end, and the length of each section of the branch track (11) is the length (A) of one construction section.

9. A construction method, applied to the safety protection system of the assembled concrete building according to claim 8, characterized in that: The construction steps include: S1. Arranging the safety protection system on two columns (101) of a prefabricated concrete building in one span; S2. When the safety net (4) is located below the tops of the two columns (101) in the current construction section, a floor is installed between the tops of the two columns (101) in the current construction section; when the track vehicle (2) pulls the safety net (4) along the track (1) to move below the tops of the two columns (101) in the next construction section, construction is performed on the two columns (101) in the current construction section; S3, after the construction of the floor and the two rows of columns (101) of the current construction section is completed, the rail vehicle (2) pulls the safety net (4) along the track (1) to move to the next current construction section; S4, removing the branch track (11) located in the previous construction section, and installing the removed branch track (11) on the opposite side of the two rows of columns (101) in the next construction section, so that the branch tracks (11) located in the current construction section and the next construction section are connected end to end to form the track (1), and adjusting the limiter (6) to the two ends of at least two track vehicles (2) located on each track (1); S5, repeat steps S2-S4; S6. After the construction of the whole floor between the tops of the two rows of columns (101) and the two rows of columns (101) is completed, the safety protection system is removed, and the safety protection system is arranged on another span of two rows of columns (101); S7. Repeat steps S2-S6 until all floor construction is completed.

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