A method and device for constructing post-cast strips in basement floor slabs

Abstract

This application discloses a construction method and device for post-cast strips in basement slabs. The construction method includes the following steps: Step 1: Laying a bottom layer of reinforcing mesh on the foundation layer of the slab, which includes a post-cast area and two pre-cast areas, with the bottom layer of reinforcing mesh laid in the pre-cast areas; Step 2: Installing wire mesh frames on both sides of the post-cast areas in the foundation layer of the slab; Step 3: Setting up a support frame and laying an upper layer of reinforcing mesh in the pre-cast areas; Step 4: Pouring concrete in the pre-cast areas; Step 5: Covering the post-cast areas with a protective cover; Step 6: Removing the protective cover after the concrete in the pre-cast areas has cured; Step 7: Cleaning the post-cast areas; Step 8: Installing a bottom layer of reinforcing mesh and an upper layer of reinforcing mesh in the post-cast areas; Step 9: Pouring concrete in the post-cast areas. Before cleaning the post-cast areas, this application does not place reinforcing mesh in the post-cast areas, thus avoiding obstruction to the concrete removal work and facilitating the removal of loose concrete blocks and protruding concrete blocks.

Description

Technical Field

[0001] This application relates to the field of post-cast strip construction of basement floor slabs, and in particular to a construction method and device for post-cast strip construction of basement floor slabs. Background Technology

[0002] A post-cast strip is an expansion joint set up during the construction of a cast-in-place monolithic reinforced concrete structure to overcome the possibility of harmful cracks caused by temperature and concrete shrinkage. When treating a post-cast strip, concrete is poured into the post-cast strip after the first-cast concrete has solidified, forming the post-cast concrete. The post-cast concrete and the first-cast concrete form an integral structure.

[0003] When constructing the post-cast strip in the basement floor slab, first excavate the soil layer to form the post-cast strip, clean the floor slab construction area, pour a concrete cushion layer within the floor slab construction area, then lay a waterproof layer on the concrete cushion layer, and then pour a concrete protective layer on the waterproof layer to form the floor slab foundation layer. Then, lay a bottom layer of steel mesh on the floor slab foundation layer, and then weld wire mesh frames for sealing the post-cast strip on both sides of the bottom layer of steel mesh. Then, lay an upper layer of steel mesh on the surface of the wire mesh frames. Then, pour concrete on the outside of the two wire mesh frames in the floor slab foundation layer to form the pre-cast concrete, and cover the post-cast strip area with a protective board. After the pre-cast concrete has cured, remove the protective board, chisel away loose concrete blocks and protruding concrete blocks on both sides of the post-cast strip, remove rust from the steel mesh within the post-cast strip area, clean the debris in the post-cast strip, and then pour concrete into the post-cast strip to form the post-cast concrete. After the post-cast concrete has cured, the construction is complete.

[0004] Regarding the aforementioned technologies, the presence of the upper layer of reinforcing mesh in the post-pouring strip limits the operating space, making it time-consuming and labor-intensive to remove loose concrete blocks and protruding concrete blocks near the side of the wire mesh frame in the post-pouring strip. Summary of the Invention

[0005] To facilitate the removal of loose and protruding concrete blocks near the post-cast strip of the wire mesh frame, this application provides a construction method and device for the post-cast strip of the basement floor slab.

[0006] Firstly, this application provides a construction method for post-cast strips in basement floor slabs, which adopts the following technical solution:

[0007] A construction method for post-cast strips in basement slabs includes the following steps: Step 1: Laying a bottom layer of reinforcing mesh on the foundation layer of the slab, wherein the foundation layer includes a post-cast area and two pre-cast areas, with the bottom layer of reinforcing mesh laid in the pre-cast areas; Step 2: Installing wire mesh frames on both sides of the foundation layer of the slab at the post-cast areas, wherein each wire mesh frame includes two vertically arranged unit frames, with a water-stop steel plate fixed between the two unit frames, one part of which is located in the pre-cast areas and the other part in the post-cast areas; Step 3: Setting up a support frame in the pre-cast areas and laying an upper layer of reinforcing mesh in the pre-cast areas, supported by the support frame; Step 4: Pouring concrete in the pre-cast areas; Step 5: Covering the post-cast areas with a protective cover; Step 6: Removing the protective cover after the concrete in the pre-cast areas has cured; Step 7: Cleaning the post-cast areas; Step 8: Installing a second layer of reinforcing mesh and a second upper layer of reinforcing mesh in the post-cast areas; Step 9: Pouring concrete in the post-cast areas.

[0008] By adopting the above technical solution, before cleaning the post-cast area, since there is no steel mesh in the post-cast area, it will not hinder the concrete removal work. This makes it easier to clean the loose concrete blocks and more protruding concrete blocks on the side of the unit frame near the post-cast area. After cleaning the post-cast area, the bottom layer steel mesh II and the top layer steel mesh II are installed in the post-cast area, so as not to affect the strength of the concrete structure in the post-cast area.

[0009] Optionally, in step 8, the second bottom-layer steel mesh is installed in the post-cast zone using an installation mechanism. The installation mechanism includes a bottom pipe, the length of which is arranged along the length of the post-cast zone. Two rows of connecting pipes are connected to the bottom pipe, and the two rows of connecting pipes face the two unit frames located below. The second bottom-layer steel mesh includes two unit sections. One end of the steel bars in the two unit sections, arranged along the width of the post-cast zone, is respectively used to insert into the two rows of connecting pipes. The other end of the steel bars in the two unit sections, arranged along the width of the post-cast zone, is respectively used to insert into the two unit frames located below. One end of the steel bar in the unit section used to insert into the connecting pipe is fixedly connected to a piston. The piston and the connecting pipe are adapted. The bottom pipe is used to connect an external air pump 2 to drive the piston to slide. The piston slides so that the end of the steel bar in the unit section away from the piston is inserted into the unit frame. The unit frame is provided with a limiting component for disengaging the steel bar in the unit section from the unit frame.

[0010] By adopting the above technical solution, when installing the second bottom layer steel mesh, the two unit parts are respectively inserted into the two rows of connecting pipes. The piston and the connecting pipes are compatible, so the piston can be moved by the external air pump, which can push the unit part to move, so that one end of the steel bar along the width direction of the post-cast zone on the unit part is inserted into the unit frame. Then, the limiting component restricts the steel bar of the unit part from detaching from the unit frame, thus ensuring the stability of the second bottom layer steel mesh and connecting the bottom layer steel mesh and the unit frame together, thereby ensuring the overall structural strength of the post-cast strip. In addition, by setting up two rows of connecting pipes, the spacing between the two unit parts can be adjusted, so that the second bottom layer steel mesh can be installed in the unit frame located below through the gap between the two water-stop steel plates.

[0011] Optionally, the limiting component includes a spring and a limiting block. The unit frame has a limiting groove for inserting the reinforcing bars of the unit part. The inner wall of the limiting groove has a relief groove. The limiting block is inserted into the relief groove. The spring is used to drive the limiting block to extend partially out of the relief groove. The side of the limiting block located outside the relief groove facing the post-cast area is an arc-shaped convex surface. The reinforcing bars of the unit part used to insert into the limiting groove have a slot for inserting the limiting block.

[0012] By adopting the above technical solution, after the steel bar of the unit is inserted into the slot, the arc-shaped convex surface of the limiting block decomposes the thrust from the steel bar of the unit into a force that pushes the limiting block into the clearance groove until the slot on the steel bar of the unit moves to the position of the limiting block. Under the action of the spring, the limiting block is partially locked into the slot, thus completing the limiting of the steel bar of the unit. The limiting component has a simple structure and is easy to operate.

[0013] Secondly, this application provides a construction device for a method of constructing post-cast strips in basement floor slabs, employing the following technical solution:

[0014] A construction device for a method of constructing a post-cast strip in a basement floor slab includes a cleaning mechanism. In step 7, the cleaning mechanism is used to clean the post-cast area. The cleaning mechanism includes two mobile vehicles that can move along the length of the post-cast area. A cleaning disc is rotatably connected to each mobile vehicle. The two cleaning discs are respectively used to abut the sides of two wire mesh frames that are close to each other. The mobile vehicle is equipped with a motor for driving the cleaning discs to rotate.

[0015] By adopting the above technical solution, when cleaning loose concrete blocks and protruding concrete blocks on the side of the wire mesh frame near the post-pouring area, the mobile vehicle is placed in the post-pouring area, and the cleaning disc is placed against the side of the wire mesh frame near the post-pouring area. Then, the mobile vehicle is moved along the length of the post-pouring area, and motor one is turned on to drive the cleaning disc to rotate. This allows the loose concrete blocks and protruding concrete blocks on the side of the wire mesh frame near the post-pouring area to be cleaned. The cleaning mechanism greatly improves the cleaning efficiency of the post-pouring area.

[0016] Optionally, the two mobile carts are placed on the two water-stop steel plates so that the two cleaning discs are close to each other on the upper side of the two unit frames, and both mobile carts are placed on the bottom surface of the post-pouring area so that the two cleaning discs are close to each other on the lower side of the two unit frames.

[0017] By adopting the above technical solution, the presence of the water-stop steel plate divides the wire mesh frame into upper and lower unit frames, and the mobile vehicle can move on the water-stop steel plate and the bottom surface of the post-pouring area, which facilitates the cleaning of loose concrete blocks and more protruding concrete blocks on the side of the upper unit frame near the post-pouring area one by one.

[0018] Optionally, the mobile cart is equipped with a push plate for moving with the mobile cart. When the two mobile carts are placed on the two water-stop steel plates respectively, the two push plates are used to clean the upper surface of the two water-stop steel plates respectively. When the mobile cart is placed on the bottom surface of the post-pouring area, the push plate is used to clean the bottom surface of the post-pouring area.

[0019] By adopting the above technical solution, the push plate moves with the moving plate, which makes it easier for the push plate to clean the water-stop steel plate and the debris on the bottom of the post-pouring area out of the post-pouring area. When cleaning the unit frame located above, the moving cart is placed on the water-stop steel plate, so that the push plate is close to the water-stop steel plate, and then the moving cart is moved along the length of the post-pouring area to clean the unit frame located above. When cleaning the bottom of the post-pouring area, the two moving carts are placed on the bottom of the pouring trough.

[0020] Optionally, one of the push plates has a slot for inserting another push plate, and one of the mobile vehicles is equipped with an air pump for driving the ends of the two push plates that are far apart to move closer or further apart, the air outlet of the air pump being connected to the slot.

[0021] By adopting the above technical solution, one pusher plate can be inserted into the slot of another pusher plate, thereby connecting the two mobile carts together and enabling them to move synchronously. This facilitates the cleaning of the bottom surface of the post-pouring area. When cleaning the bottom surface of the post-pouring area, by controlling the degree of overlap of the two pusher plates, the two mobile carts can be placed on the bottom surface of the post-pouring area at the same time. Then, by using an air pump, the two mobile carts are driven to move away from each other, so that the two mobile carts are close to the side of the two unit frames that are close to each other.

[0022] Optionally, a slider is slidably connected to the mobile vehicle along the width direction of the post-pouring strip, the cleaning disc is rotatably connected to the slider, and the mobile vehicle is provided with a drive assembly for driving the slider to slide.

[0023] By adopting the above technical solution, the position of the cleaning disc can be adjusted to clean different types of wire mesh frames.

[0024] In summary, this application includes the following beneficial technical effects:

[0025] 1. Before cleaning the post-cast area, this application does not place a steel mesh in the post-cast area, which will not hinder the concrete removal work, thus facilitating the cleaning of loose concrete blocks and more protruding concrete blocks on the side of the unit frame near the post-cast area.

[0026] 2. In this application, after cleaning the post-cast area, the bottom layer steel mesh II and the top layer steel mesh II are installed in the post-cast area, so as not to affect the strength of the concrete structure in the post-cast area. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a method for constructing post-cast strips in a basement floor slab according to an embodiment of this application;

[0028] Figure 2 This is a partial structural schematic diagram of a construction method for post-cast strips in a basement floor slab according to an embodiment of this application;

[0029] Figure 3 yes Figure 2 A sectional view;

[0030] Figure 4 yes Figure 3 Enlarged view of region A in the middle;

[0031] Figure 5 This is a schematic diagram of the overall structure of the construction device for cleaning the post-pouring area in a construction method for post-pouring strips of basement floor slabs according to Embodiment 1 of this application;

[0032] Figure 6 yes Figure 5 A schematic diagram of the overall structure of the cleaning mechanism;

[0033] Figure 7 This is a schematic diagram of the overall structure of the construction device for a method of constructing post-pouring strips for basement floor slabs according to Embodiment 2 of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Pad strip; 2. Foundation layer; 3. Post-cast area; 4. Pre-cast area; 5. Bottom layer steel mesh (I); 6. Unit frame; 7. Frame body; 8. Mesh body; 9. Waterstop steel plate; 10. Support frame; 11. Placement groove; 12. Moving cart; 13. Sliding block; 14. Slide groove; 15. Lead screw (I); 16. Motor (II); 17. Extension rod; 18. Cleaning disc; 19. Motor (I); 20. Push plate; 21. Slot; 22. Connecting pipe; 23. 24. Unit; 25. Bottom tube; 26. Connecting tube; 27. Piston; 28. Inflation tube; 29. ​​Limiting groove; 30. Spring; 31. Limiting block; 32. Slot; 33. Clearance groove; 34. Air pump II; 35. Support rod; 36. Groove; 37. Upper steel mesh I; 38. Upper steel mesh II; 39. Air pump I; 40. Support plate; 41. Moving frame; 42. Lead screw II; 43. Motor III; 44. Moving block. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0037] This application discloses a method for constructing post-cast strips in basement floor slabs. It includes the following steps:

[0038] Reference Figure 1 and Figure 2 ;

[0039] Step 1: Arrange multiple spacer strips 1 at intervals on the foundation layer 2 of the base plate. The length direction of the spacer strips 1 is set along the length direction of the post-cast area 3. In this embodiment, the spacer strips 1 are made of concrete.

[0040] Step 2: Divide the foundation layer 2 of the base plate into a post-cast area 3 and two pre-cast areas 4. Lay a bottom layer steel mesh 5 in both pre-cast areas 4. In this embodiment, pre-embedded steel bars can be set on the pad strip 1. When laying the bottom layer steel mesh 5, the bottom layer steel mesh 5 can be tied or welded to the pre-embedded steel bars.

[0041] Step 3: Install wire mesh frames on both sides of the base layer 2 and the post-pouring area 3 (in this embodiment, the wire mesh frames are installed on the pads 1 and can be fixed to the pads 1 by pre-embedded bolts). The length direction of the wire mesh frames is set along the length direction of the post-pouring area 3. The wire mesh frames include two unit frames 6 arranged vertically. Each unit frame 6 includes a frame body 7 and a mesh body 8. The mesh body 8 is fixed in the frame body 7, and the side of the mesh body 8 near the post-pouring area 3 is flush with the side of the frame body 7 near the post-pouring area 3. A water-stop steel plate 9 is fixed between the two frame bodies 7 (in this embodiment, the water-stop steel plate 9 is fixed by welding). The length direction of the water-stop steel plate 9 is set along the length direction of the post-pouring area 3. One side of the water-stop steel plate 9 extends to the pre-pouring area 4, and the other side of the water-stop steel plate 9 extends to the post-pouring area 3.

[0042] Step 4: Set up multiple support frames 10 in the pre-casting zone 4, and lay the upper layer steel mesh 36 in the pre-casting zone 4. The upper layer steel mesh 36 is supported by the support frames 10. The upper surface of the frame 7 of the unit frame 6 located above is provided with a placement groove 11 for inserting one end of the steel bar of the upper layer steel mesh 36 that is set along the width direction of the post-casting zone 3. In this embodiment, one end of the steel bar of the upper layer steel mesh 36 that is set along the width direction of the post-casting zone 3 is welded to the placement groove 11.

[0043] Step 5: Pour concrete into the pre-poured area 4 and cover the post-poured area 3 with a protective cover (not shown in the figure).

[0044] Step 6: After the concrete in the first-poured area 4 has cured, remove the protective cover.

[0045] Step 7: Clean the post-pouring area;

[0046] Reference Figure 2 and Figure 3 ;

[0047] Step 8: Install the second bottom-layer steel reinforcement mesh in the post-cast zone 3 using the installation mechanism. The installation mechanism includes a bottom pipe 24, which is set along the length of the post-cast zone 3. Two rows of connecting pipes 25 are connected to the bottom pipe 24, and are set along the width of the post-cast zone 3. The two rows of connecting pipes 25 face the lower ends of the frame bodies 7 of the two lower unit frames 6. The second bottom-layer steel reinforcement mesh includes two unit parts 23. One end of the steel bars in the two unit parts 23, which are set along the width of the post-cast zone 3, is used to insert into the two rows of connecting pipes 25. The other end of the steel bars in the two unit parts 23, which are set along the width of the post-cast zone 3, is used to insert into the two lower unit frames 6. A piston 26 is fixedly connected to one end of the reinforcing bar of the unit part 23 inserted into the connecting pipe 25 (in this embodiment, the piston 26 is welded to one end of the reinforcing bar of the unit part 23). The piston 26 and the connecting pipe 25 are adapted to each other and the inner walls of the piston 26 and the connecting pipe 25 are provided with a sliding seal. One end of the bottom pipe 24 in the length direction is connected to an inflation pipe 27. A valve is installed on the inflation pipe 27. The inflation pipe 27 is used to connect an external air pump 23 to drive the piston 26 to slide. The piston 26 slides so that the end of the reinforcing bar of the unit part 23 away from the piston 26 is inserted into the lower end of the frame 7 of the unit frame 6 located below. The unit frame 6 is provided with a limiting component for preventing the reinforcing bar of the unit part 23 from leaving the unit frame 6.

[0048] Reference Figure 3 and Figure 4The lower end of the frame 7 located below is provided with a limiting groove 28 for the insertion of the reinforcing bars of the unit 23. A limiting component is set in the limiting groove 28. The limiting component includes a spring 29 and a limiting block 30. A relief groove 32 is provided on the inner wall of the limiting groove 28 for the insertion of the limiting block 30. The limiting block 30 is inserted into the relief groove 32. The spring 29 is set in the relief groove 32 along the insertion direction of the limiting block 30. The two ends of the spring 29 in the length direction are respectively fixedly connected to the side wall of the limiting block 30 and the relief groove 32. The reinforcing bars of the unit 23 used for insertion into the limiting groove 28 are provided with a slot 31 for the insertion of the limiting block 30. When the spring 29 is not deformed, the limiting block 30 extends out of the relief groove 32, and the part of the limiting block 30 that extends out of the relief groove 32 near the post-pouring area 3 is an arc-shaped convex surface. The reinforcing bars of the unit 23 used for insertion into the limiting groove 28 are limited by the side of the limiting groove 28 away from the post-pouring area 3 and the limiting block 30.

[0049] In use, the steel bars of the two unit parts 23 with pistons 26 are first inserted into the connecting pipe 25. Then, the bottom pipe 24 is lowered to the bottom surface of the post-pouring area 3. Then, the bottom pipe 24 is inflated by the external air pump 23, so that the piston 26 slides and the steel bars of the unit parts 23 are inserted into the limiting groove 28 located in the lower frame 7. In order to facilitate the stable placement of the bottom pipe 24 on the bottom surface of the post-pouring area 3, multiple support plates 39 are fixedly connected at intervals along the length of the bottom pipe 24.

[0050] Reference Figure 2 ;

[0051] Step 9: Install the upper layer steel mesh 37; Multiple vertically arranged support rods 34 are fixedly connected at intervals along the length of the bottom pipe 24. The upper end of the support rod 34 is provided with a groove 35 for the steel bars of the upper layer steel mesh 37 arranged along the length of the post-cast area 3 to be inserted. The two ends of the steel bars of the upper layer steel mesh 37 arranged along the width of the post-cast area 3 are used to be placed and welded in the placement groove 11 respectively.

[0052] Step 10: Pour concrete in post-pouring zone 3.

[0053] This application also discloses a construction device for a method of constructing post-cast strips for basement floor slabs.

[0054] Example 1;

[0055] Reference Figure 5 and Figure 6The construction device includes a cleaning mechanism. When cleaning the post-pouring area 3, the cleaning mechanism is used to clean the post-pouring area 3. The cleaning mechanism includes two mobile carts 12. In this embodiment, the mobile carts 12 are electrically driven (each mobile cart is equipped with an electric drive structure, which is prior art and will not be described in detail). The mobile carts 12 can move along the length direction of the post-pouring area 3. A slider 13 is slidably connected to the mobile cart 12 along the width direction of the post-pouring area 3. A groove 14 for the slider 13 to slide is opened on the upper surface of the mobile cart 12. The slider 13 is inserted into the groove 14. A lead screw 15 is rotatably connected in the groove 14. The rotation axis and length direction of the lead screw 15 are both set along the sliding direction of the slider 13. A motor 16 is fixedly connected to the mobile cart 12. The output shaft of the motor 16 is coaxially fixedly connected to the lead screw 15.

[0056] An extension rod 17 is fixedly connected to the slider 13. One end of the extension rod 17 extends out of the front end of the moving vehicle 12, and a motor 19 is fixedly connected to the end of the extension rod 17 extending out of the front end of the moving vehicle 12. A cleaning disc 18 is fixedly connected to the output shaft of the motor 19. The slider 13 slides so that the cleaning disc 18 abuts against the side of the mesh body 8 near the post-pouring zone 3.

[0057] Both mobile carts 12 are fixedly connected to push plates 20 at their front ends. One push plate 20 has a slot 21 for the other push plate 20 to be inserted into, and the inner wall of the slot 21 and the push plate 20 are slidably sealed. One mobile cart 12 is fixedly connected to an air pump 38 by screws. The output shaft of the air pump 38 is coaxially fixedly connected to a connecting pipe 22, and the other end of the connecting pipe 22 is connected to the slot 21.

[0058] The push plate 20 is located between the mobile vehicle 12 and the cleaning disc 18 to facilitate the cleaning of concrete residue removed by the cleaning disc 18.

[0059] When the mobile cart 12 is placed on the water-stop steel plate 9, the push plate 20 is used to clean up the concrete residue that has fallen on the water-stop steel plate 9. When the mobile cart 12 is placed on the bottom surface of the post-pouring area 3, the push plate 20 is used to clean up the concrete residue that has fallen on the bottom surface of the post-pouring area 3.

[0060] After one push plate 20 is inserted into the slot 21 of the other push plate 20, the two moving carts 12 can be placed on the two water-stop steel plates 9 under the action of the two push plates 20 without falling off. By controlling the electric drive structure in the two moving carts 12 to move synchronously at the same time, or by controlling the electric drive structure in one of the moving carts 12 to move synchronously, the two moving carts 12 can be driven to move synchronously.

[0061] The implementation principle of the construction device for a construction method of post-cast strip in basement floor slab according to Embodiment 1 of this application is as follows: When cleaning the post-cast area 3, first clean the concrete on the upper surface of the waterstop steel plate 9 and the side of the mesh 8 above it that is close to the post-cast area 3. During cleaning, place two moving carts 12 on the two waterstop steel plates 9 respectively, and keep the two moving carts 12 moving stably and synchronously by using two push plates 20. By moving the moving carts 12 and rotating the cleaning disc 18, the concrete on the upper surface of the waterstop steel plate 9 and the side of the mesh 8 above it that is close to the post-cast area 3 can be cleaned; then clean the concrete. The concrete residue on the bottom surface can be removed by adjusting the distance between the two moving carts 12, placing them on the bottom surface of the post-cast area 3. Then, by inflating the slot 21 with an air pump, the two moving carts 12 can be moved away from each other until the two push plates 20 respectively abut against the sides of the two unit frames 6 below that are close to each other. Then, by sliding the cleaning disc 18, the cleaning disc 18 abuts against the side of the mesh body 8 near the post-cast area 3. By moving the moving carts 12 and rotating the cleaning disc 18, the concrete on the bottom surface of the post-cast area 3 and the side of the mesh body 8 below that is close to the post-cast area 3 can be cleaned.

[0062] Example 2;

[0063] The difference between this embodiment and Embodiment 1 is that, referring to... Figure 7 The cleaning mechanism also includes a movable frame 40, which is placed on the bottom surface of the post-pouring zone 3. The movable frame 40 can move along the length of the post-pouring zone 3 (the movement is driven by a motor, which is existing technology and will not be described in detail). A movable block 43 is slidably connected to the movable frame 40 in the vertical direction. The movable block 43 is fixedly connected to the push plate 20 with a slot 21. The movable frame 40 is provided with a driving component for driving the movable block 43 to move vertically.

[0064] In this embodiment, the driving component includes a third motor 42 and a second lead screw 41. The second lead screw 41 is rotatably connected to the movable frame 40. The rotation axis and length direction of the second lead screw 41 are both arranged in the vertical direction. The second lead screw 41 is threaded through the movable block 43. The third motor 42 is fixedly connected to the movable frame 40. The output shaft of the third motor 42 is coaxially fixedly connected to the second lead screw 41.

[0065] By setting up the movable frame 40, when cleaning the unit frame 6 located above, the movable frame 40 can support the two movable carts 12, so as to improve the problem of the large stress on the waterstop steel plate 9.

[0066] The implementation principle of the construction device for the construction method of post-pouring strip in basement floor slab according to Embodiment 2 of this application is as follows: When cleaning the upper unit frame 6, the height of the moving cart 12 is adjusted by the motor 3 42 and the lead screw 2 41, and the two moving carts 12 are placed on the two water-stop steel plates 9 respectively, so that the upper unit frame 6 can be cleaned; when cleaning the lower unit frame 6, the distance between the two moving carts 12 is adjusted by the air pump 1 38, and then the moving cart 12 is lowered to the bottom surface of the post-pouring area 3 by the motor 3 42 and the lead screw 2 41, and then the distance between the two moving carts 12 is adjusted by the air pump 1 38, so that the lower unit frame 6 can be cleaned.

[0067] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A method of constructing a post-cast strip for a basement floor, the method comprising: The method comprises the following steps: step 1, laying a first bottom reinforcement mesh (5) on a bottom base layer (2), the bottom base layer (2) comprising a post-pouring area (3) and two pre-pouring areas (4), and the first bottom reinforcement mesh (5) being laid in the pre-pouring areas (4); step 2, installing a wire mesh frame on both sides of the post-pouring area (3) of the bottom base layer (2), the wire mesh frame comprising two unit frames (6) arranged in an up-down mode, and a water-stop steel plate (9) being fixed between the two unit frames (6), one part of the water-stop steel plate (9) being located in the pre-pouring area (4), and the other part of the water-stop steel plate (9) being located in the post-pouring area (3); step 3, arranging a support frame (10) in the pre-pouring area (4) and laying a first upper reinforcement mesh (36) in the pre-pouring area (4), the first upper reinforcement mesh (36) being supported by the support frame (10); step 4, pouring concrete in the pre-pouring area (4); step 5, covering the post-pouring area (3) with a protective cover; step 6, removing the protective cover after the concrete in the pre-pouring area (4) is cured; step 7, cleaning the post-pouring area (3); step 8, installing a second bottom reinforcement mesh and a second upper reinforcement mesh (37) in the post-pouring area (3), the second bottom reinforcement mesh being installed in the post-pouring area (3) by an installation mechanism, the installation mechanism comprising a bottom pipe (24), the bottom pipe (24) being arranged along the length direction of the post-pouring area (3), and two rows of communication pipes (25) being communicated with the bottom pipe (24), the two rows of communication pipes (25) being respectively directed towards the two unit frames (6) located below, the second bottom reinforcement mesh comprising two unit parts (23), one end of the steel bars arranged along the width direction of the post-pouring area (3) of the two unit parts (23) being respectively inserted into the two rows of communication pipes (25), the other end of the steel bars arranged along the width direction of the post-pouring area (3) of the two unit parts (23) being respectively inserted into the two unit frames (6) located below, one end of the steel bars of the unit part (23) for being inserted into the communication pipe (25) being fixedly connected with a piston (26), the piston (26) being matched with the communication pipe (25), the bottom pipe (24) being used for connecting an air pump two (33) to drive the piston (26) to slide, the piston (26) being slid to insert the other end of the steel bars of the unit part (23) away from the piston (26) into the unit frame (6), and the unit frame (6) being provided with a limiting groove (28) for inserting the steel bars of the unit part (23), and the unit frame (6) being provided with a limiting assembly for limiting the steel bars of the unit part (23) from being separated from the unit frame (6); and step 9, pouring concrete in the post-pouring area (3); wherein, before the post-pouring area (3) is cleaned, no reinforcement mesh is arranged in the post-pouring area (3), so that the concrete chiseling work is not hindered, thereby facilitating the cleaning of the loose concrete blocks and the relatively protruding concrete blocks near the one side of the unit frame (6) close to the post-pouring area (3), and after the post-pouring area (3) is cleaned, the second bottom reinforcement mesh and the second upper reinforcement mesh (37) are installed in the post-pouring area (3), thereby not affecting the strength of the concrete structure of the post-pouring area (3). ​ 2. The basement floor post-cast strip construction method according to claim 1, characterized in that: The limiting assembly comprises a spring (29) and a limiting block (30), a limiting groove (32) is formed on the inner wall of the limiting groove (28), the limiting block (30) is inserted into the limiting groove (32), the spring (29) is used to drive the limiting block (30) to partially extend out of the limiting groove (32), the part of the limiting block (30) outside the limiting groove (32) is arc convex towards the back pouring area (3), and the unit part (23) is provided with a clamping groove (31) for inserting the limiting block (30) on the reinforcing bar inserted into the limiting groove (28).

3. The basement slab post-cast strip construction method according to claim 1, characterized in that: A plurality of support rods (34) are fixedly connected to the bottom pipe (24) and arranged vertically, a recess (35) is formed on the upper end of the support rod (34) and used to clamp the reinforcing bar of the upper layer reinforcing mesh two (37) arranged along the length direction of the back pouring area (3), and the two ends of the reinforcing bar arranged along the width direction of the back pouring area (3) are used to be fixed on the upper surfaces of the two unit frames (6) respectively.

4. A construction device for the construction method of a post-cast strip of a basement floor according to any one of claims 1 to 3, characterized in that: The cleaning mechanism is used to clean the back pouring area (3), the cleaning mechanism comprises two moving vehicles (12), the moving vehicles (12) can move along the length direction of the back pouring area (3), the moving vehicles (12) are rotationally connected with cleaning discs (18), the two cleaning discs (18) are used to abut against the mutually close surfaces of the two wire mesh frames respectively, and the moving vehicles (12) are provided with motors one (19) used to drive the cleaning discs (18) to rotate.

5. The basement bottom plate post-cast strip construction method construction device according to claim 4, characterized in that: The two moving vehicles (12) are placed on the two water stop steel plates (9) respectively so that the two cleaning discs (18) abut against the mutually close surfaces of the two unit frames (6) above, and the two moving vehicles (12) are placed on the bottom surface of the back pouring area (3) so that the two cleaning discs (18) abut against the mutually close surfaces of the two unit frames (6) below.

6. The construction device for the basement floor post-cast strip construction method according to claim 5, characterized in that: The moving vehicles (12) are provided with push plates (20) used to move along with the moving vehicles (12), when the two moving vehicles (12) are placed on the two water stop steel plates (9) respectively, the two push plates (20) are used to clean the upper surfaces of the two water stop steel plates (9) respectively, and when the moving vehicles (12) are placed on the bottom surface of the back pouring area (3), the push plates (20) are used to clean the bottom surface of the back pouring area (3).

7. The construction device for the basement floor post-cast strip construction method according to claim 6, characterized in that: One of the push plates (20) is provided with an insertion groove (21) for inserting the other push plate (20), one of the moving vehicles (12) is provided with a gas pump one (38) used to drive the mutually close or distant ends of the two push plates (20) to be close to or away from each other, and the gas outlet of the gas pump one (38) is communicated with the insertion groove (21).

8. The construction device for the basement floor post-cast strip construction method according to claim 4, characterized in that: The moving vehicles (12) are slidingly connected with sliding blocks (13) along the width direction of the back pouring area, the cleaning discs (18) are rotationally connected to the sliding blocks (13), and the moving vehicles (12) are provided with a driving assembly used to drive the sliding blocks (13) to slide.

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