An assembled subway station first ring assembling device and construction method

Abstract

The present application relates to the technical field of subway first ring construction, and discloses a kind of assembled subway station first ring assembling device and construction method, the device includes: support, the support is symmetrically arranged, and the support is fixedly installed with limiting plate.The present application can be in the process of hoisting and installing the bottom plate of assembling first ring, can be adjusted to the position of offset bottom plate by the cooperation of inclined surface and vertical surface of limiting plate, so that each bottom plate can be centrally located in the required installation area, greatly reduce the operation difficulty of hoisting equipment operator, and when adjusting the position of limiting plate to the next bottom plate installation area, the bottom plate can be separated from the limiting plate, to avoid the friction of limiting plate, to protect it, the limiting plate can be cleaned before adjusting the position of bottom plate, so that the residual slag on the surface of limiting plate is washed, so that the subsequent bottom plate and limiting plate can reduce friction when contacting, to protect the limiting plate.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of subway first ring construction, and particularly relates to a fabricated subway station first ring assembling device and a construction method. BACKGROUND

[0002] The open-cut fabricated station is assembled into a ring like "building with building blocks" by prefabricating concrete components (such as a bottom plate, a side wall and a top plate) in a factory, which can reduce 80% of on-site construction personnel, save 4-6 months of construction period, and reduce carbon emissions by 20%.

[0003] During the assembling process, the first ring bottom plate needs to be lifted and placed. When the bottom plate is placed at the required position, it is difficult to accurately place the bottom plate at the required position due to the shaking of the bottom plate during lifting. The installation needs to be completed by the cooperation of the lifting master and the continuous adjustment of the staff, so that the whole process is relatively cumbersome.

[0004] Therefore, it is necessary to invent a fabricated subway station first ring assembling device and a construction method to solve the above problems. SUMMARY

[0005] In view of the above problems, the present application provides a fabricated subway station first ring assembling device and a construction method to solve the problems raised in the background art.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a fabricated subway station first ring assembling device, comprising: a support, the support is symmetrically arranged, a limiting plate is fixedly installed on the support, an inclined surface and a vertical surface are arranged on the surface of the limiting plate, the inclined surface is located above the vertical surface, the inclined surface is connected with the vertical surface, and a driving assembly for driving horizontal movement of the support is arranged on the support.

[0007] The driving assembly comprises: a side frame, a vertical plate, a lead screw, a sliding block and a motor.

[0008] The side frame is symmetrically arranged, the vertical plate is symmetrically and fixedly installed on the top of the side frame, the lead screw is rotatably installed between the two vertical plates, the sliding block is slidably installed on the side frame, one side of the sliding block is connected with the support, the sliding block is threadedly sleeved outside the lead screw, the motor is fixedly installed outside the vertical plate on one side, and the output shaft of the motor is fixedly connected with one end of the lead screw.

[0009] Further, the inside of the sliding block is provided with a cavity, a gas cylinder is arranged in the cavity, the cylinder rod of the gas cylinder is fixedly connected with the support, and the bottom of the support is provided with a roller.

[0010] Further, the side frame is provided with a first protrusion equidistantly on one side close to the support, the support is provided with a second protrusion fixedly installed on one side close to the side frame, and the first protrusion and the second protrusion are both provided with arc surfaces.

[0011] Further, the top of the support is provided with a pressing plate, the inside of the pressing plate is provided with a water injection cavity, the bottom of the pressing plate is provided with a plurality of injection holes equidistantly and in communication with the water injection cavity, and the support is provided with a water injection assembly for injecting water into the water injection cavity.

[0012] Further, the water injection assembly comprises a shaft, a torsional spring, a cylinder, an extension pipe, a suction pipe, a one-way valve and a piston assembly.

[0013] The pressing plate is fixedly sleeved on the outside of the shaft, the shaft is rotatably installed on the support, both ends of the shaft extend to the outside of the support, the torsional spring is symmetrically sleeved on the outside of the shaft, both ends of the torsional spring are fixedly connected with the support and the shaft respectively, the inside of the support is provided with a water storage cavity, the suction pipe is fixedly installed on the support, the bottom of the suction pipe extends to the inside of the water storage cavity, the cylinder is fixedly installed on the top of the suction pipe, the top of the suction pipe is in communication with the cylinder, the extension pipe is in communication with the water injection cavity, the piston assembly can extrude water in the cylinder outward, and the one-way valve is arranged in the inside of the suction pipe and the extension pipe respectively.

[0014] Further, the piston assembly comprises a plug plate, a pull rod, a second spring and a pull rope.

[0015] The plug plate is arranged in the cylinder, the pull rod is fixedly installed on one side of the plug plate close to the pressing plate, the second spring is sleeved on the outside of the pull rod, one end of the pull rod extends to the outside of the cylinder, and the pull rope is fixedly connected with the pressing plate.

[0016] Further, the torsional force of the torsional spring is greater than the elastic force of the second spring.

[0017] The construction method of the assembled subway station first ring assembling device as described above comprises the following steps:

[0018] S1, when in use, a hoisting device is used to hoist a first ring bottom plate to be installed, and the bottom plate is hoisted between a pair of limiting plates;

[0019] S2, if the hoisted bottom plate is offset, with the descent of the bottom plate, one end of the bottom plate will be in contact with the inclined surface of one side of the limiting plate, and with the descent of the bottom plate, the inclined surface extrudes the bottom plate to adjust the position of the bottom plate to the center;

[0020] S3, finally, the bottom plate can be centered into a pair of vertical faces, finally the bottom plate can be centered in the required installation area, then start the motor to drive the screw rod to rotate, thereby driving the sliding block to move with the support and the limiting plate, so that a pair of limiting plates move synchronously, so that it can be moved to the next bottom plate required installation area;

[0021] S4, then the same operation as above, that is, the installation of the next bottom plate can be carried out, and finally the installation of a plurality of bottom plates is carried out in sequence, so that the adjustment of each pair of bottom plates can be carried out when the bottom plate is installed.

[0022] Technical effects and advantages of the present application:

[0023] 1. The present application can realize the adjustment of the position of the offset bottom plate by the cooperation of the inclined surface and the vertical surface of the limiting plate during the hoisting and installation of the bottom plate of the assembled first ring, so that each bottom plate can be centered in the required installation area, greatly reducing the operation difficulty of the hoisting equipment operator, and when the position of the limiting plate is adjusted to the next bottom plate installation area, the bottom plate and the limiting plate can be separated, avoiding the friction of the limiting plate and protecting it;

[0024] 2. The present application can clean the limiting plate before adjusting the position of the bottom plate, so that the residual slag on the surface of the limiting plate is washed away, so that the subsequent bottom plate and the limiting plate can reduce friction and protect the limiting plate. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The structure schematic diagram of the assembled subway station first ring assembling device of the embodiment of the present application is shown;

[0026] Figure 2 The structure schematic diagram of the side frame of the embodiment of the present application is shown;

[0027] Figure 3 The local enlarged structure schematic diagram of the side frame of the embodiment of the present application is shown;

[0028] Figure 4 The structure schematic diagram of the Figure 3 of the embodiment of the present application is shown;

[0029] Figure 5 The structure schematic diagram of the support of the embodiment of the present application is shown;

[0030] Figure 6 The cross-sectional structure schematic diagram of the support of the embodiment of the present application is shown;

[0031] Figure 7 The local enlarged structure schematic diagram of the Figure 6 of the embodiment of the present application is shown;

[0032] In the figure: 1, support; 2, limit plate; 3, side frame; 4, vertical plate; 5, screw rod; 6, sliding block; 7, roller; 8, air cylinder; 9, plunger; 10, roller mounting seat; 11, first protrusion; 12, second protrusion; 13, pressing plate; 14, injection hole; 15, shaft rod; 16, torsional spring; 17, cylinder body; 18, telescopic pipe; 19, pipe; 20, one-way valve; 21, plug plate; 22, pull rod; 23, second spring; 24, pull rope; 25, motor. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the present application will be described clearly and completely below in conjunction with the embodiments.

[0034] The present application provides a kind of assembled subway station first ring assembly device, as shown in Figure Figures 1 to 7 Support 1 is symmetrically arranged, limit plate 2 is fixedly installed on support 1, the surface of limit plate 2 is provided with inclined plane and vertical plane, inclined plane is located above vertical plane, inclined plane is connected with vertical plane, limit plate 2 is cast iron steel plate, driving assembly for driving horizontal movement is provided on support 1;

[0035] Driving assembly includes: side frame 3, vertical plate 4, screw rod 5, sliding block 6, motor 25;

[0036] Side frame 3 is symmetrically arranged, side frame 3 is fixedly installed in the area of installing subway first ring by bolt, vertical plate 4 is fixedly installed on the top of side frame 3, screw rod 5 is rotatably installed between two vertical plates 4, sliding block 6 is slidably installed on side frame 3, one side of sliding block 6 is connected with support 1, sliding block 6 is threadedly sleeved on the outside of screw rod 5, motor 25 is fixedly installed on the outside of vertical plate 4 on one side, the output shaft of motor 25 is fixedly connected with one end of screw rod 5.

[0037] In use, the first ring bottom plate to be installed is hoisted by a lifting device, and the bottom plate is hoisted between a pair of limiting plates 2, the width of the limiting plates 2 is smaller than the width of the bottom plate, the distance between the vertical faces of the pair of limiting plates 2 is consistent with the length of the bottom plate, if the hoisted bottom plate is offset, with the descent of the bottom plate, one end of the bottom plate will be in contact with the inclined face of the limiting plate 2 on one side, with the descent of the bottom plate, the inclined face extrudes the bottom plate to adjust the position of the bottom plate to the center, finally, the bottom plate can be in the center between the pair of vertical faces, and finally the bottom plate can be in the center in the required installation area, then the motor 25 is started to drive the screw rod 5 to rotate, thereby driving the sliding block 6 to move with the bracket 1 and the limiting plate 2, so that the pair of limiting plates 2 move synchronously, so that the next bottom plate can be moved to the required installation area, then the above operation is performed, and the next bottom plate can be installed, and finally a plurality of bottom plates are installed in sequence, so that the bottom plates can be adjusted to the center in the required installation area during installation, and the operation difficulty of the lifting device operator is greatly reduced.

[0038] As shown in Figure 3 , the inside of the sliding block 6 is provided with a cavity, and the cavity is provided with a gas cylinder 8, the cylinder rod of the gas cylinder 8 is fixedly connected with the bracket 1, and the bottom of the bracket 1 is provided with a roller 7, specifically, the roller 7 is connected with the bracket 1 through a roller mounting seat 10.

[0039] When the bottom plate is located between the vertical faces of the pair of limiting plates 2, the limiting plates 2 are adjusted in position, and the limiting plates 2 are rubbed with the bottom plate, causing wear of the limiting plates 2;

[0040] Therefore, when the limiting plate 2 moves, the gas cylinder 8 is started to make the cylinder rod thereof shortened, so that the bracket 1 is driven to move towards the side frame 3, so that the limiting plate 2 moves away from the bottom plate, then the limiting plate 2 moves horizontally, when the limiting plate 2 is about to reach the required position, the cylinder rod of the gas cylinder 8 is elongated, so that the bracket 1 drives the limiting plate 2 to move away from the side frame 3, finally the limiting plate 2 is reset, and the subsequent adjustment of the position of the bottom plate can continue, during the entire adjustment process of the position of the limiting plate 2, the limiting plate 2 can be separated from the bottom plate, and wear of the limiting plate 2 during movement is avoided.

[0041] As shown in Figure 3 , the side frame 3 is provided with a first protrusion 11 equidistantly on the side close to the bracket 1, and the bracket 1 is fixedly provided with a second protrusion 12 corresponding to the first protrusion 11 on the side close to the side frame 3, and the first protrusion 11 and the second protrusion 12 are both provided with arc faces.

[0042] When the first protrusion 11 is in contact with the second protrusion 12, the support 1 cannot move, and the first protrusion 11 can provide support for the support 1 in cooperation with the second protrusion 12. When it is necessary to adjust the position of the limiting plate 2, the drive slider 6 is driven to move, so that the cylinder 8, the support 1 and the limiting plate 2 move together, so that the second protrusion 12 moves, and the second protrusion 12 moves away from the first protrusion 11. At this time, the support 1 is not supported, and the cylinder rod of the cylinder 8 is shortened continuously when the second protrusion 12 moves.

[0043] As shown in Figures 1 to 7 , the top of the support 1 is provided with a pressing plate 13, the inside of the pressing plate 13 is provided with a water injection cavity, the bottom of the pressing plate 13 is provided with a plurality of injection holes 14 which are equidistantly arranged and communicate with the water injection cavity, and the support 1 is provided with a water injection assembly for injecting water into the water injection cavity.

[0044] Because the end of the part of the bottom plate is in the condition of slag falling, when the end of the bottom plate is in contact with the limiting plate 2, the slag on the surface of the bottom plate will remain on the surface of the limiting plate 2, so that when the next bottom plate moves along the limiting plate 2, the remaining slag increases the friction, so that the wear of the limiting plate 2 is accelerated;

[0045] Therefore, when the bottom plate descends, the bottom plate is in contact with the pressing plate 13, and water is injected into the water injection cavity through the water injection assembly. The water is sprayed to the surface of the limiting plate 2 through the injection holes 14, so that the remaining slag on the surface of the limiting plate 2 is washed, and the friction between the subsequent bottom plate and the limiting plate 2 is reduced, so that the limiting plate 2 is protected.

[0046] As shown in Figures 5 to 7 , the water injection assembly comprises a shaft 15, a torsional spring 16, a cylinder 17, a telescopic pipe 18, a suction pipe 19, a one-way valve 20 and a piston assembly.

[0047] The pressing plate 13 is fixedly sleeved on the outside of the shaft 15, the shaft 15 is rotatably installed on the support 1, both ends of the shaft 15 extend to the outside of the support 1, the torsional spring 16 is symmetrically sleeved on the outside of the shaft 15, both ends of the torsional spring 16 are fixedly connected with the support 1 and the shaft 15 respectively, the inside of the support 1 is provided with a water storage cavity, the suction pipe 19 is fixedly installed on the support 1, the bottom of the suction pipe 19 extends to the inside of the water storage cavity, the cylinder 17 is fixedly installed on the top of the suction pipe 19, the top of the suction pipe 19 communicates with the cylinder 17, the telescopic pipe 18 communicates the cylinder 17 with the water injection cavity, the piston assembly can extrude the water in the cylinder 17 outward, and the one-way valve 20 is arranged in the inside of the suction pipe 19 and the telescopic pipe 18 respectively; the piston assembly comprises a plug plate 21, a pull rod 22, a second spring 23 and a pull rope 24; the plug plate 21 is arranged in the cylinder 17, the pull rod 22 is fixedly installed on one side of the plug plate 21 close to the pressing plate 13, the second spring 23 is sleeved on the outside of the pull rod 22, one end of the pull rod 22 extends to the outside of the cylinder 17, and the pull rope 24 fixedly connects the pull rod 22 with the pressing plate 13. The support 1 is provided with a water inlet which communicates with the water storage cavity, and the water inlet is provided with a plunger 9.

[0048] When the bottom plate is lowered, the bottom plate contacts the pressing plate 13 and presses the pressing plate 13 to rotate downward, so that the shaft 15 is twisted to deform the torsion spring 16. With the rotation of the pressing plate 13, the pull rope 24 is loosened, the compressed second spring 23 pushes the plug plate 21 to move, so that the water in the cylinder 17 is extruded out. At this time, the one-way valve 20 in the suction pipe 19 is closed, and the one-way valve 20 in the telescopic pipe 18 is opened. The water enters the water injection cavity through the telescopic pipe 18, and then is sprayed out through the spray hole 14 to the surface of the limiting plate 2. When the bottom plate leaves the pressing plate 13, the torsion spring 16 returns to the original position with the shaft 15 and the pressing plate 13. The pressing plate 13 pulls the pull rod 22 and the plug plate 21 to return to the original position through the pull rope 24. At the same time, the plug plate 21 deforms the second spring 23. With the movement of the plug plate 21, the water is pumped into the cylinder 17. At this time, the one-way valve 20 in the suction pipe 19 is opened, and the one-way valve 20 in the telescopic pipe 18 is closed. The water in the water storage cavity is pumped into the cylinder 17 through the suction pipe 19.

[0049] The torsion force of the torsion spring 16 is greater than the elastic force of the second spring 23.

[0050] The torsion spring 16 can drive the shaft 15 and the pressing plate 13 to rotate, and pull the pull rod 22 and the plug plate 21 to move through the pull rope 24, so as to compress the second spring 23 to deform.

[0051] Working Principle: During use, the first ring base plate to be installed is lifted by a lifting device and placed between a pair of limiting plates 2. The width of the limiting plates 2 is less than the width of the base plate, and the distance between the vertical surfaces of the pair of limiting plates 2 is the same as the length of the base plate. If the lifted base plate is offset, as the base plate descends, one end of the base plate will contact the inclined surface of one side of the limiting plate 2. As the base plate descends, the inclined surface presses against the base plate, adjusting its centering position. Finally, the base plate is centered between the pair of vertical surfaces and placed in the required installation area. Then, a pair of motors 25 are started, causing a pair of lead screws 5 to rotate, thereby driving the slider 6 to move the cylinder 8, bracket 1, and limiting plates 2. This causes the second protrusion 12 to move accordingly, separating from the first protrusion 11. At this point, the support for the bracket 1 is removed. During this process, the cylinder rod of the cylinder 8 continuously shortens, causing the drive... The moving bracket 1 moves towards the side frame 3, causing the limiting plate 2 to leave the base plate. Then, the second protrusion 12 moves horizontally along the side frame 3. When the second protrusion 12 contacts the first protrusion 11 again, the cylinder rod of the cylinder 8 extends, causing the second protrusion 12 to move along the surface of the first protrusion 11 towards its crest, thereby moving the bracket 1 away from the side frame 3. Finally, the limiting plate 2 is reset in the area where the next base plate needs to be installed, and the position of the base plate can be adjusted. During the entire adjustment process of the position of the limiting plate 2, the limiting plate 2 can be separated from the base plate to avoid wear when the limiting plate 2 moves. Then, the same operation is performed to install the next base plate. Finally, multiple base plates are installed in sequence, so that each base plate can be adjusted during installation, so that each base plate can be centered in the required installation area, which greatly reduces the operation difficulty for the crane operator.

[0052] When the base plate descends, it contacts the pressure plate 13, squeezing the pressure plate 13 and causing it to rotate downwards. This causes the torsion spring 16, which carries the shaft 15, to twist and deform. As the pressure plate 13 rotates, the pull rope 24 loosens, and the compressed second spring 23 pushes the plug plate 21 to move, squeezing the water out of the cylinder 17. At this time, the one-way valve 20 in the suction pipe 19 closes, and the one-way valve 20 in the telescopic pipe 18 opens. Water enters the water injection chamber through the telescopic pipe 18 and is then sprayed out through the spray hole 14 onto the surface of the limit plate 2. When the base plate leaves the pressure plate 13, the torsion spring 16, carrying the shaft 15, causes the torsion spring 16 to twist and deform. 5. The pressure plate 13 is reset. The pressure plate 13, together with the pull rope 24, pulls the pull rod 22 and the plug plate 21 to reset them. At the same time, the plug plate 21 compresses the second spring 23 to deform it. As the plug plate 21 moves, water is drawn into the cylinder 17. At this time, the one-way valve 20 in the suction pipe 19 is opened and the one-way valve 20 in the telescopic pipe 18 is closed. The water in the water storage chamber is drawn into the cylinder 17 through the suction pipe 19. By spraying water on the limiting plate 2, the residue remaining on the surface of the limiting plate 2 is washed away, so that the friction can be reduced when the bottom plate contacts the limiting plate 2, thus protecting the limiting plate 2.

[0053] The above examples are only used to illustrate the technical solutions of the present application, but not to limit the present application.

Claims

1. An assembled subway station first ring assembling device, characterized in that, Include: Support (1), the support (1) is symmetrically arranged, the support (1) is provided with a driving assembly for driving its horizontal movement; The driving assembly comprises: side frame (3), vertical plate (4), lead screw (5), sliding block (6), motor (25); The side frame (3) is symmetrically arranged, the vertical plate (4) is symmetrically fixedly installed on the top of the side frame (3), the lead screw (5) is rotatably installed between the two vertical plates (4), the sliding block (6) is slidably installed on the side frame (3), one side of the sliding block (6) is connected with the support (1), the sliding block (6) is threadedly sleeved on the outside of the lead screw (5), the motor (25) is fixedly installed on the outside of the vertical plate (4) on one side, and the output shaft of the motor (25) is fixedly connected with one end of the lead screw (5); The support (1) is fixedly installed with a limiting plate (2), the surface of the limiting plate (2) is provided with an inclined surface and a vertical surface, the inclined surface is located above the vertical surface, and the inclined surface is connected with the vertical surface; The inside of the sliding block (6) is provided with a cavity, the cavity is provided with a gas cylinder (8), the cylinder rod of the gas cylinder (8) is fixedly connected with the support (1), and the bottom of the support (1) is provided with a roller (7).

2. The assembly type subway station first ring assembly device according to claim 1, wherein: The side frame (3) is provided with a first protrusion (11) equidistantly on the side close to the support (1), the support (1) is fixedly provided with a second protrusion (12) corresponding to the first protrusion (11) on the side close to the side frame (3), and the first protrusion (11) and the second protrusion (12) are both provided with curved surfaces.

3. The assembly type subway station first ring assembly device according to claim 2, wherein: The top of the support (1) is provided with a pressing plate (13), the inside of the pressing plate (13) is provided with a water injection cavity, the bottom of the pressing plate (13) is provided with a spray hole (14) in communication with the water injection cavity, and the support (1) is provided with a water injection assembly for injecting water into the water injection cavity.

4. The assembly type subway station first ring assembly device according to claim 3, wherein: The water injection assembly comprises: a shaft rod (15), a torsional spring (16), a cylinder body (17), a telescopic pipe (18), a suction pipe (19), a one-way valve (20) and a piston assembly; The pressing plate (13) is fixedly sleeved on the outside of the shaft rod (15), the shaft rod (15) is rotatably installed on the support (1), both ends of the shaft rod (15) extend to the outside of the support (1), the torsional spring (16) is symmetrically sleeved on the outside of the shaft rod (15), and both ends of the torsional spring (16) are fixedly connected with the support (1) and the shaft rod (15) respectively.

5. The prefabricated subway station primary ring assembling device according to claim 4, characterized in that: The inside of the support (1) is provided with a water storage cavity, the pipe (19) is fixedly installed on the support (1), the bottom of the pipe (19) extends to the inside of the water storage cavity, the cylinder (17) is fixedly installed on the top of the pipe (19), the top of the pipe (19) is communicated with the cylinder (17), the telescopic pipe (18) communicates the cylinder (17) with the water injection cavity, the piston assembly can extrude the water in the cylinder (17) outward, and the one-way valve (20) is arranged in the inside of the pipe (19) and the telescopic pipe (18) respectively.

6. The prefabricated subway station first ring assembling device according to claim 5, characterized in that: The piston assembly comprises a plug plate (21), a pull rod (22), a second spring (23) and a pull rope (24). The plug plate (21) is arranged in the cylinder (17), the pull rod (22) is fixedly installed on one side of the plug plate (21) close to the pressing plate (13), the second spring (23) is sleeved outside the pull rod (22), one end of the pull rod (22) extends out of the cylinder (17), and the pull rope (24) fixedly connects the pull rod (22) and the pressing plate (13).

7. The prefabricated subway station first ring assembling device according to claim 6, characterized in that: The torsional force of the torsional spring (16) is greater than the elastic force of the second spring (23).

8. The construction method of the assembly-type subway station first ring assembling device according to claim 7, characterized in that, The method comprises the following steps: S1, when in use, the first ring bottom plate to be installed is lifted by hoisting equipment and is hoisted between a pair of limiting plates (2); S2, if the hoisted bottom plate is offset, with the descent of the bottom plate, one end of the bottom plate will be in contact with the inclined surface of the limiting plate (2) on one side, and with the descent of the bottom plate, the inclined surface extrudes the bottom plate to adjust the position of the bottom plate to the center; S3, finally, the bottom plate can be in the center of a pair of vertical surfaces, so that the bottom plate can be in the center of the area to be installed, and then the motor (25) is started to drive the screw rod (5) to rotate, thereby driving the sliding block (6) to move with the support (1) and the limiting plate (2), so that the pair of limiting plates (2) move synchronously, and the support (1) and the limiting plate (2) can move to the area to be installed by the next bottom plate; S3, then the same operation as above is performed, and the installation of the next bottom plate can be performed, and finally the installation of multiple bottom plates is sequentially performed, so that the support (1) and the limiting plate (2) can adjust the bottom plate when the bottom plate is installed.

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