An auxiliary device for subway station roof construction

Abstract

This invention relates to the field of construction auxiliary tools and discloses an auxiliary device for the construction of subway station roof slabs. The device includes a positioning plate, a connecting plate rotatably connected to the top surface of the positioning plate, a connecting rod rotatably connected to the top surface of the connecting plate, a load-bearing plate rotatably connected to one end of the connecting rod, a sliding cylinder fixedly connected to the top surface of the load-bearing plate, a guide rod slidably connected inside the sliding cylinder, clamping components rotatably connected to both ends of the load-bearing plate, and web plates fixedly connected around the perimeter of the positioning plate. A sliding groove is formed through the top surface of the web plates, and the top surface of the web plates is in close contact with ear blocks. An adjusting rod is threaded into the ear blocks, and a clamping block is fixedly connected to the lower surface of the ear blocks. This invention allows adjustment of the positions of two sets of load-bearing plates by rotating the lead screw, ultimately enabling the load-bearing plates to drive the clamping mechanism to clamp the four corners of the precast template. Operation is convenient, and the clamping components provide excellent fixation for the precast template, preventing it from falling off during lifting. The four lifting rings connecting the equipment ensure more even force distribution.

Description

Technical Field

[0001] This invention relates to the field of construction auxiliary tools, specifically an auxiliary device for the construction of subway station roof slabs. Background Technology

[0002] In subway station construction, the main structure is primarily a reinforced concrete frame structure. This structure uses a large amount of concrete and steel reinforcement, is heavy, and has a high cost. The final step in subway station construction is pouring the roof slab. During construction, roof slab formwork is erected to support the concrete, and the formwork can be removed after the concrete dries. To improve construction efficiency, precast formwork is currently used. The precast formwork is assembled before being hoisted into place.

[0003] Precast formwork is typically connected by bolts. However, using conventional hoisting tools to lift the entire precast formwork presents several problems: the large size of the assembled formwork leads to inconsistent deflection deformation due to its own weight during hoisting, making it difficult to control the stress state of each formwork section, with the middle section more prone to tensile and shear deformation. To address these issues, we propose an auxiliary device for subway station roof slab construction. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an auxiliary device for the construction of subway station roof slabs. This device is capable of stably hoisting and assembling prefabricated templates, resulting in more coordinated and stable stress distribution during the hoisting process and preventing significant shear deformation between templates. This solves the problem that conventional tools used for hoisting and assembling prefabricated templates can easily cause uneven stress distribution and shear deformation between templates.

[0006] (II) Technical Solution

[0007] To achieve the goal of stably hoisting and assembling precast templates, ensuring more coordinated and stable force distribution during hoisting, and preventing significant shear deformation between templates, this invention provides the following technical solution: An auxiliary device for subway station roof slab construction, comprising a positioning plate, a connecting plate rotatably connected to the top surface of the positioning plate, a connecting rod rotatably connected to the top surface of the connecting plate, a load-bearing plate rotatably connected to one end of the connecting rod, a sliding cylinder fixedly connected to the top surface of the load-bearing plate, a guide rod slidably connected inside the sliding cylinder, clamping assemblies rotatably connected to both ends of the load-bearing plate, web plates fixedly connected around the perimeter of the positioning plate, a through groove formed on the top surface of the web plates, and an ear block tightly abutting the top surface of the web plates, an adjusting rod threadedly connected to the ear block, and a clamping block fixedly connected to the lower surface of the ear block, a tie rod plate fixedly connected to the top surface of the positioning plate, a lead screw rotatably connected inside the tie rod plate, a rotating handle fixedly connected to one end of the lead screw, and a limiting piece fixedly connected to the tail end of the lead screw, and two load-bearing plates, one of which has a protrusion fixedly connected to its top surface.

[0008] Preferably, the outer surface of the adjusting rod is provided with double threads in opposite directions, and the two sets of threads on the adjusting rod are respectively threaded to an ear block, and the clamping block is slidably connected in the groove.

[0009] Using the above technical solution, the assembled precast templates are placed on sleepers. The auxiliary device is then placed over the assembled precast templates, and its position is adjusted so that two sets of clamping blocks are suspended at the connection between the two precast templates. The auxiliary tool is then laid flat. Initially, the two sets of clamping blocks are far apart, creating a gap between them. By turning the adjusting rod clockwise, the two lugs are brought closer together, and the lugs move the clamping blocks, causing them to press tightly against the connection between the precast templates, thus clamping the edges of the two precast templates.

[0010] Preferably, the bottom end of the clamping block is configured as an L-shaped hook, one end of the adjusting rod is provided with a knob, and the other end of the adjusting rod is welded with a limiting disc.

[0011] Through the above technical solutions, the knob at one end of the adjusting rod facilitates rotation of the adjusting rod, and the limiting disc can limit the adjusting rod to prevent it from detaching from the lug. Multiple holes are opened on the frame of the precast template, and bolts are inserted into the holes to connect two adjacent precast templates. The hook at the bottom of the clamping block can clamp the frame of the precast template, and the hook of the clamping block can be positioned below a bolt. This ensures that during the hoisting process, the clamping block exerts a tensile force on the connection point of the precast templates, preventing the middle part of the assembled precast template from being easily stretched and sheared during hoisting.

[0012] Preferably, a screw hole is formed through the outer surface of the protrusion, and a screw rod is connected to the screw hole of the protrusion. Two limiting plates are provided, and the two limiting plates are attached to the pull rod plate.

[0013] Through the above technical solution, the screw is rotated by rotating the handle clockwise. Since two limiting plates are set between the tie rod plates to limit the screw, the screw rotation forces the protrusion to move. The protrusion drives the load-bearing plate to move, and the load-bearing plate drives the clamping assembly to move. In this way, the clamping assembly can approach the four corners of the assembled prefabricated template, and finally the clamping assembly clamps the assembled prefabricated template.

[0014] Preferably, a connecting rod is rotatably connected to the upper surface of the connecting plate near both ends, and a load-bearing plate is rotatably connected to the end of the connecting rod away from the connecting plate. The load-bearing plate has two lifting rings welded on it.

[0015] With the above technical solution, when one of the load-bearing plates is moved by rotating the lead screw, the load-bearing plate drives the connecting rod connected to it, the connecting rod drives the connecting plate, the connecting plate drives another connecting rod, and so on. Thus, the connecting rod drives the other load-bearing plate. In this way, the position of the two load-bearing plates can be adjusted by rotating only one lead screw, which is convenient to use.

[0016] Preferably, the positioning plate is fixedly connected to the lower surface of the guide rod, a baffle is fixedly connected to both ends of the guide rod, and two sliding cylinders are slidably connected to the outer surface of the guide rod.

[0017] Through the above technical solution, when the load-bearing plate moves, it drives the slide cylinder to move on the guide rod. The guide rod and the slide cylinder can guide the load-bearing plate. The baffles set at both ends of the guide rod can prevent the slide cylinder from separating from the guide rod and maintain the integrity.

[0018] Preferably, the clamping assembly includes a shaft, a load-bearing shaft, a solid plate, and clamping wheels. The shaft is rotatably connected to both ends of the load-bearing plate, and the load-bearing shaft is sleeved on the outer surface of the shaft. The outer surface of the load-bearing shaft is rotatably connected to two solid plates, and the clamping wheels are rotatably connected between the two solid plates.

[0019] Through the above technical solution, the size of the auxiliary tool is customized according to the size of the assembled precast template. As the handle is rotated clockwise, the screw is rotated, causing the two load-bearing plates to move closer to each other. After the two clamping wheels on the clamping assembly are attached to the outer surface of the precast template, they form a clamp around the four corners of the precast template. Then, a sling is connected to the lifting ring, and the sling is connected to the lifting equipment to lift the entire auxiliary device. The auxiliary device then lifts the assembled precast template.

[0020] Preferably, a through hole is formed on the top surface of the solid plate, a load-bearing shaft is installed in the through hole, and the clamping wheel includes a guide wheel and a support wheel, with the support wheel fixedly connected to the lower surface of the guide wheel.

[0021] Through the above technical solution, the load-bearing shaft can assist the shaft rod in rotating, so that when one of the clamping wheels is in contact with the outer surface of the precast template, as the clamping assembly moves as a whole, the solid plate deflects with the assistance of the shaft rod and the load-bearing shaft, so that the other clamping wheel can also be in contact with the outer surface of the precast template. The guide wheel is in contact with the side of the precast template, while the support wheel is in close contact with the lower surface of the precast template, forming a firm clamping of the precast template.

[0022] Compared with the prior art, the present invention provides an auxiliary device for the construction of subway station roof slabs, which has the following beneficial effects:

[0023] 1. The present invention provides an auxiliary device for the construction of subway station roof slabs. By covering the entire auxiliary device on the assembled precast template, adjusting the position of the auxiliary device, suspending two sets of clamping blocks at the connection of the two precast templates, and then leveling the auxiliary tool, the adjustment rod is turned clockwise to move the two lugs closer to each other. The two lugs drive the clamping blocks, so that the two clamping blocks are tightly attached to the edge of the precast template. This ensures that the clamping blocks exert a tensile force on the connection of the precast template during the hoisting process, preventing the middle part of the assembled precast template from being easily stretched and sheared during the hoisting process.

[0024] 2. The present invention provides an auxiliary device for the construction of subway station roof slabs. By rotating the screw rod, the position of two sets of load-bearing plates can be adjusted, so that the load-bearing plates drive the clamping mechanism to clamp the four corners of the precast template. The operation is convenient, the clamping components have a good fixing effect on the precast template, and prevent it from falling off during the lifting process. The four lifting rings are set to connect the equipment, and the force is more evenly distributed.

[0025] 3. The present invention provides an auxiliary device for the construction of subway station roof slabs. When the lead screw is rotated to move one of the load-bearing plates, the load-bearing plate drives the connecting rod connected to it, the connecting rod drives the connecting plate, the connecting plate drives another connecting rod, and so on. Thus, the connecting rod drives the other load-bearing plate. In this way, the position of the two load-bearing plates can be adjusted by rotating only one lead screw, which is convenient. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a top view of the structure of the present invention;

[0028] Figure 3 This is a partial three-dimensional schematic diagram of the structure of the present invention;

[0029] Figure 4 This is a three-dimensional schematic diagram of the clamping block, web plate, and adjusting rod of the present invention.

[0030] Figure 5 This is a three-dimensional schematic diagram of the clamping component of the present invention.

[0031] The components are as follows: 1. Positioning plate; 2. Connecting plate; 3. Connecting rod; 4. Load-bearing plate; 5. Slide cylinder; 6. Guide rod; 7. Clamping assembly; 71. Shaft; 72. Load-bearing shaft; 73. Solid plate; 74. Clamping wheel; 741. Guide wheel; 742. Support wheel; 8. Web plate; 9. Slide groove; 10. Ear block; 11. Adjusting rod; 12. Clamping block; 13. Pull rod plate; 14. Lead screw; 15. Rotary handle; 16. Limiting plate; 17. Protrusion; 18. Lifting ring. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figure 1-5 An auxiliary device for construction of subway station roof slabs includes a positioning plate 1, a connecting plate 2 rotatably connected to the top surface of the positioning plate 1, a connecting rod 3 rotatably connected to the top surface of the connecting plate 2, a load-bearing plate 4 rotatably connected to one end of the connecting rod 3, a sliding cylinder 5 fixedly connected to the top surface of the load-bearing plate 4, a guide rod 6 slidably connected inside the sliding cylinder 5, clamping components 7 rotatably connected to both ends of the load-bearing plate 4, a web plate 8 fixedly connected around the perimeter of the positioning plate 1, a sliding groove 9 penetrating through the top surface of the web plate 8, and an ear block 10 tightly attached to the top surface of the web plate 8, an adjusting rod 11 threadedly connected to the ear block 10, and a clamping block 12 fixedly connected to the lower surface of the ear block 10, a pull rod plate 13 fixedly connected to the top surface of the positioning plate 1, a lead screw 14 rotatably connected inside the pull rod plate 13, a rotating handle 15 fixedly connected to one end of the lead screw 14, and a limiting piece 16 fixedly connected to the tail end of the lead screw 14, and two load-bearing plates 4 are provided, one of which has a protrusion 17 fixedly connected to its top surface.

[0034] Specifically, the outer surface of the adjusting rod 11 has double threads with opposite directions, and the two sets of threads on the adjusting rod 11 are respectively threaded to an ear block 10, and the clamping block 12 is slidably connected in the groove 9. The advantage is that the assembled precast template is placed on the sleeper, and by covering the assembled precast template with the auxiliary device, the position of the auxiliary device is adjusted, and the two sets of clamping blocks 12 are suspended at the connection of the two precast templates. Then the auxiliary tool is laid flat. In the initial state, the two sets of clamping blocks 12 are far apart from each other, so there is a gap between the two sets of clamping blocks 12. By turning the adjusting rod 11 clockwise, the two ear blocks 10 are moved closer to each other, and the two ear blocks 10 drive the clamping blocks 12, so that the two clamping blocks 12 are tightly attached to the connection of the precast template, that is, the edges of the two precast templates are clamped.

[0035] Specifically, the bottom end of the clamping block 12 is configured as an L-shaped hook, one end of the adjusting rod 11 is equipped with a knob, and the other end of the adjusting rod 11 is welded with a limiting disc. The advantages are that the knob at one end of the adjusting rod 11 facilitates rotation, and the limiting disc limits the adjusting rod 11, preventing it from detaching from the ear block 10. Multiple holes are provided on the frame of the precast template, and bolts are inserted into these holes to connect adjacent precast templates. The hook at the bottom of the clamping block 12 can clamp the frame of the precast template, and the hook of the clamping block 12 can be positioned below a bolt. This ensures that during hoisting, the clamping block 12 exerts a tensile force on the connection point of the precast templates, preventing tensile and shear deformation in the middle of the assembled precast template during hoisting.

[0036] Specifically, a threaded hole is formed through the outer surface of the protrusion 17, and the threaded hole of the protrusion 17 is connected to the lead screw 14. Two limiting plates 16 are provided, and the two limiting plates 16 are attached to the tie rod plate 13. The advantage is that by rotating the handle 15 clockwise, the lead screw 14 is rotated. Since the two limiting plates 16 are set between the tie rod plates 13 to limit the lead screw 14, the rotation of the lead screw 14 forces the protrusion 17 to move. The protrusion 17 drives the load-bearing plate 4 to move, and the load-bearing plate 4 drives the clamping assembly 7 to move. In this way, the clamping assembly 7 can approach the four corners of the assembled precast template, and finally the clamping assembly 7 clamps the assembled precast template.

[0037] Specifically, a connecting rod 3 is rotatably connected to the upper surface of the connecting plate 2 near both ends. The end of the connecting rod 3 away from the connecting plate 2 is rotatably connected to a load-bearing plate 4. Two lifting rings 18 are welded onto the load-bearing plate 4. The advantage is that when the lead screw 14 is rotated to move one of the load-bearing plates 4, the load-bearing plate 4 drives the connecting rod 3 connected to it, the connecting rod 3 drives the connecting plate 2, the connecting plate 2 drives the other connecting rod 3, and so on. Thus, the connecting rod 3 drives the other load-bearing plate 4. In this way, the positions of the two load-bearing plates 4 can be adjusted by rotating only one lead screw 14, which is convenient to use.

[0038] Specifically, the positioning plate 1 is fixedly connected to the lower surface of the guide rod 6, and a baffle 61 is fixedly connected to both ends of the guide rod 6. Two sliding cylinders 5 are slidably connected to the outer surface of the guide rod 6. The advantage is that when the load-bearing plate 4 moves, it drives the sliding cylinders 5 to move on the guide rod 6. The guide rod 6, in conjunction with the sliding cylinders 5, can guide the load-bearing plate 4. The baffles 61 at both ends of the guide rod 6 can prevent the sliding cylinders 5 from detaching from the guide rod 6, maintaining its integrity.

[0039] Specifically, the clamping assembly 7 includes a shaft 71, a load-bearing shaft 72, solid plates 73, and clamping wheels 74. The shaft 71 is rotatably connected to both ends of the load-bearing plate 4, and the outer surface of the shaft 71 is fitted with the load-bearing shaft 72. The outer surface of the load-bearing shaft 72 is rotatably connected to two solid plates 73, and the clamping wheels 74 are rotatably connected between the two solid plates 73. The advantage is that the size of this auxiliary tool is customized according to the size of the assembled precast template. As the handle 15 is rotated clockwise, it drives the lead screw 14 to rotate, causing the two load-bearing plates 4 to move closer to each other. After the two clamping wheels 74 on the clamping assembly 7 are in contact with the outer surface of the precast template, they form a clamp around the four corners of the precast template. Thus, a sling is connected to the lifting ring 18, and the sling is connected to the lifting equipment to lift the entire auxiliary device, which in turn lifts the assembled precast template.

[0040] Specifically, a through hole is formed on the top surface of the solid plate 73, and a load-bearing shaft 72 is installed in the through hole. The clamping wheel 74 includes a guide wheel 741 and a support wheel 742, with the lower surface of the guide wheel 741 fixedly connected to the support wheel 742. The advantage is that the load-bearing shaft 72 can assist the shaft 71 in rotating, so that when one of the clamping wheels 74 is in contact with the outer surface of the precast template, as the clamping assembly 7 moves as a whole, the solid plate 73 deflects with the assistance of the shaft 71 and the load-bearing shaft 72, so that the other clamping wheel 74 can also be in contact with the outer surface of the precast template. The guide wheel 741 is in contact with the side of the precast template, while the support wheel 742 is in close contact with the lower surface of the precast template, forming a firm clamping of the precast template.

[0041] In use, firstly, the assembled precast template is placed on sleepers at the subway station construction site. Then, the lifting ring 18 of the auxiliary device is connected to the sling of the lifting equipment. Next, the entire auxiliary device is placed over the assembled precast template. The position of the auxiliary device is adjusted, with the two sets of clamping blocks 12 suspended at the connection point of the two precast templates. Then, the auxiliary tool is leveled, and the adjusting rod 11 is turned clockwise to bring the two lugs 10 closer together. The two lugs 10 then move the clamping blocks 12, causing them to press tightly against the edge of the precast template. Finally, the screw 14 is turned clockwise to force the protrusion 17 to move. 7 drives the load-bearing plate 4 to move, and the load-bearing plate 4 drives the clamping assembly 7 to move. When one of the load-bearing plates 4 moves, the load-bearing plate 4 drives the connecting rod 3 connected to it, the connecting rod 3 drives the connecting plate 2, the connecting plate 2 drives another connecting rod 3, and so on. Thus, the connecting rod 3 drives the other load-bearing plate 4. In this way, the position of the two load-bearing plates 4 can be adjusted by rotating a lead screw 14. After the two clamping wheels 74 on the clamping assembly 7 are attached to the outer surface of the precast template, they form a clamp around the four corners of the precast template. This completes the fixation of the assembled precast template. Then, the precast template can be lifted to the subway roof slab for installation by using a lifting device in conjunction with this auxiliary device.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for construction of subway station roof slabs, comprising a positioning plate (1), characterized in that: The top surface of the positioning plate (1) is rotatably connected to the connecting plate (2), the top surface of the connecting plate (2) is rotatably connected to the connecting rod (3), one end of the connecting rod (3) is rotatably connected to the load-bearing plate (4), the top surface of the load-bearing plate (4) is fixedly connected to the slide cylinder (5), the guide rod (6) is slidably connected inside the slide cylinder (5), the two ends of the load-bearing plate (4) are rotatably connected to the clamping assembly (7), the periphery of the positioning plate (1) is fixedly connected to the web plate (8), the top surface of the web plate (8) is through-cut with a sliding groove (9), and the top surface of the web plate (8) is in close contact with the ear block. (10), the ear block (10) is internally threaded with an adjusting rod (11), and the lower surface of the ear block (10) is fixedly connected with a clamping block (12). The top surface of the positioning plate (1) is fixedly connected with a pull rod plate (13). The pull rod plate (13) is internally rotatably connected with a screw rod (14). One end of the screw rod (14) is fixedly connected with a rotating handle (15), and the tail end of the screw rod (14) is fixedly connected with a limiting piece (16). There are two load-bearing plates (4), one of which has a protrusion (17) fixedly connected to its top surface. The clamping assembly (7) includes a shaft (71), a load-bearing shaft (72), a solid plate (73), and a clamping wheel (74). The shaft (71) is rotatably connected to both ends of the load-bearing plate (4), and the load-bearing shaft (72) is sleeved on the outer surface of the shaft (71). The outer surface of the load-bearing shaft (72) is rotatably connected to two solid plates (73), and the clamping wheel (74) is rotatably connected between the two solid plates (73). The outer surface of the protrusion (17) is provided with a threaded hole, and the threaded hole of the protrusion (17) is connected to the screw rod (14). There are two limiting pieces (16), and the two limiting pieces (16) are attached to the pull rod plate (13). A connecting rod (3) is rotatably connected to the upper surface of the connecting plate (2) near both ends. The end of the connecting rod (3) away from the connecting plate (2) is rotatably connected to the load-bearing plate (4). Two lifting rings (18) are welded to the load-bearing plate (4). The top surface of the solid plate (73) has a through hole, and a load-bearing shaft (72) is installed in the through hole. The clamping wheel (74) includes a guide wheel (741) and a support wheel (742). The lower surface of the guide wheel (741) is fixedly connected to the support wheel (742).

2. The auxiliary device for construction of subway station roof slab according to claim 1, characterized in that: The outer surface of the adjusting rod (11) is provided with double threads in opposite directions, and the two sets of threads on the adjusting rod (11) are respectively threaded to an ear block (10), and the clamping block (12) is slidably connected in the slide groove (9).

3. The auxiliary device for construction of subway station roof slab according to claim 1, characterized in that: The bottom end of the clamping block (12) is configured as an L-shaped hook, one end of the adjusting rod (11) is provided with a knob, and the other end of the adjusting rod (11) is welded with a limiting disc.

4. The auxiliary device for construction of subway station roof slab according to claim 1, characterized in that: The positioning plate (1) is fixedly connected to the lower surface of the guide rod (6), and a baffle (61) is fixedly connected to both ends of the guide rod (6), and two slide cylinders (5) are slidably connected to the outer surface of the guide rod (6).

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