Construction method of heat-preservation waterproof prefabricated outer wall

Abstract

The application relates to a construction method of a heat-preservation waterproof prefabricated outer wall, and specifically comprises the following steps: step one: sleeving a gasket at the connecting steel bars of a building roof plate to provide support for a prefabricated wall, then hoisting the prefabricated wall through a hoisting device and slowly moving the prefabricated wall to a construction work station; step two: manually moving a positioning auxiliary device to an auxiliary work station on one side of the prefabricated wall to assist in installing the prefabricated wall and accelerating the construction and installation speed of the prefabricated wall; step three: when the prefabricated wall is installed, detecting the elevation and levelness of the prefabricated wall through a detection device to prevent errors; step four: manually cooperating with a smearing device to smear waterproof heat-preservation materials on the outer wall of the prefabricated wall to guarantee the construction quality of the building; and accurately inserting the connecting steel bars into corresponding installation holes in the bottom of the prefabricated wall to accelerate the construction and installation speed of the prefabricated wall and prevent injuries to surrounding auxiliary workers.

Description

Technical Field

[0001] This invention relates to the field of precast wall panel technology, specifically to a construction method for thermally insulated and waterproof precast exterior walls. Background Technology

[0002] Precast wall panels are precast concrete components manufactured in precast component factories, mainly used in building assembly. Precast concrete wall panels can improve the degree of factory and mechanized construction, reduce on-site wet work, save on-site labor, overcome seasonal influences, and shorten the construction cycle. Precast wall panels can be manufactured using different methods, such as flat mold assembly line method, group vertical mold or paired vertical mold method, etc.

[0003] In terms of installation, wall panel installation is carried out on the completed floors or foundations, with the main work area being the composite floor slabs. However, when hoisting precast walls, the strong winds at high altitudes can cause slight swaying, requiring manual assistance to stabilize them before installation and fixation. This process is time-consuming, affecting the speed of construction and installation, and can easily cause injury to nearby auxiliary workers. In addition, the existing method of fixing precast panels is to install wall panel diagonal supports, which is a complex operation and requires subsequent disassembly, reducing the efficiency of precast wall construction. Summary of the Invention

[0004] The technical problem that this solution addresses is:

[0005] (1) How to solve the problem that precast walls are prone to slight shaking, requiring manual assistance to stabilize them, which takes a lot of time, affects the construction and installation speed, and is likely to cause injury to the surrounding auxiliary workers.

[0006] (2) How to solve the problem that the existing method of fixing precast panels is to install wall panel diagonal supports, which is a relatively complicated operation and requires subsequent disassembly, thus reducing the construction efficiency of precast walls.

[0007] The objective of this invention can be achieved through the following technical solution: a construction method for a thermally insulated and waterproof prefabricated exterior wall, specifically including the following steps:

[0008] Step 1: Place shims at the connecting steel bars of the building's roof slab to provide support for the precast wall, then lift the precast wall using a hoisting device and slowly move it to the construction site;

[0009] Step 2: The positioning auxiliary device is manually moved to an auxiliary work position on one side of the precast wall to assist in the installation of the precast wall and speed up the construction and installation process.

[0010] Step 3: After the precast wall is installed, its elevation and levelness are checked using a detection device to prevent errors.

[0011] Step 4: Waterproof and thermal insulation material is applied to the outer wall of the precast wall by manual application and a coating device to ensure the quality of the construction.

[0012] A further technical improvement of the present invention is that: in the positioning auxiliary device of step two, both sets of guide units rotate, so that the first clamping frame and the second clamping frame cooperate with the corresponding guide wheels to quickly and stably limit the precast wall at the construction position, avoiding the process of manual assistance in stabilization and preventing safety accidents.

[0013] A further technical improvement of the present invention is that: in the positioning auxiliary device of step two, four guide wheels guide the precast wall at the construction position, which facilitates the quick and accurate insertion of the connecting steel bars into the corresponding installation holes at the bottom of the precast wall, thereby speeding up the construction of the precast wall.

[0014] A further technical improvement of the present invention is that: in the positioning auxiliary device of step two, the positions of the first moving sleeve and the second moving sleeve are locked by a bidirectional threaded screw to prevent them from sliding and to avoid affecting the efficiency of installing the precast wall.

[0015] A further technical improvement of the present invention is that: in the positioning auxiliary device of step two, the counterweight is pushed away from the precast wall by the second hydraulic cylinder, which changes the position of the center of gravity of the positioning auxiliary device, thereby increasing the stability efficiency of the positioning auxiliary device for the precast wall.

[0016] A further technical improvement of the present invention is that: in the positioning auxiliary device of step two, the L-shaped frame is driven to flip by the lateral movement of the railing, so that the anti-slip plate is in close contact with the building top plate, and the movement of the bottom plate is avoided to affect the positioning effect of the precast wall.

[0017] A further technical improvement of the present invention is that: in the positioning auxiliary device of step two, the counterweight moves toward the anti-slip plate, thereby increasing the pressure on the anti-slip plate and further increasing the stability of the base plate.

[0018] A further technical improvement of the present invention is that: the positioning auxiliary device includes a base plate set on the top slab of a building, a precast wall is provided on one side of the base plate, an installation frame is fixedly connected to the top of the base plate away from the precast wall, a stabilizing mechanism for quickly limiting the precast wall is provided on the top of the installation frame, a connecting frame for supporting the stabilizing mechanism is also fixedly installed on the top of the base plate, and an opening is provided at the bottom of the installation frame, and a positioning mechanism for preventing the precast wall from tilting is provided inside the opening.

[0019] A further technical improvement of the present invention is that: the stabilizing mechanism includes a first hydraulic cylinder fixedly installed on the mounting frame. The first hydraulic cylinder is arranged horizontally, and a control plate is fixedly installed on the extended end of the first hydraulic cylinder. The position of the control plate corresponds to the position of the precast wall window, and two guide units for guiding the precast wall are symmetrically arranged on the top surface of the control plate. The two guide units are arranged left and right, and a transmission unit for driving the two guide units is arranged in the middle of the control plate.

[0020] A further technical improvement of the present invention is that: the guiding unit includes a first clamping frame and a second clamping frame rotatably connected to the top surface of the control panel, and the ends of the first clamping frame and the second clamping frame away from the control panel are rotatably provided with guide wheels corresponding to the precast wall surface. The top surface of the control panel is also fixedly connected with four positioning blocks for preventing the first clamping frame and the second clamping frame from rotating excessively.

[0021] A further technical improvement of the present invention is that the transmission unit includes a first movable sleeve and a second movable sleeve that are slidably disposed on the top surface of the control panel via a guide rail. A lever is fixedly installed on the top of both the first movable sleeve and the second movable sleeve. The ends of the two sets of the first clamping frame and the second clamping frame away from the guide wheel are respectively movably connected to the corresponding levers.

[0022] A further technical improvement of the present invention is that: a rotating seat is fixedly connected to the top surface of the control board, and a bidirectional threaded screw is rotatably arranged on the rotating seat. The two ends of the bidirectional threaded screw are respectively threadedly connected to the middle of the first moving sleeve and the second moving sleeve. A servo motor is fixedly installed on the end of the control board near the first hydraulic cylinder through a support plate, and the output end of the servo motor is fixedly connected to one end of the bidirectional threaded screw.

[0023] A further technical improvement of the present invention is that: the positioning mechanism includes a moving vehicle that is rolledly connected to the top surface of the base plate, a counterweight is placed on the top of the moving vehicle, and a railing for limiting the counterweight is fixedly installed on the top of the moving vehicle; a support unit for preventing the base plate from moving is provided on one side of the moving vehicle.

[0024] A further technical improvement of the present invention is that a second hydraulic cylinder arranged horizontally is fixedly installed on the connecting frame, and the extended end of the second hydraulic cylinder is fixedly connected to the railing.

[0025] A further technical improvement of the present invention is that the support unit includes two L-shaped frames that are rotatably connected to the inner wall of the opening via pins. One end of the L-shaped frame is movably connected to the railing via a fixing pin, and the other end of the L-shaped frame is fixedly connected to a connecting rod. One end of the two connecting rods is fixedly connected to an anti-slip plate.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] In use, the positioning auxiliary device is manually pushed to the auxiliary work position on one side of the precast wall, where the limiting plate contacts the gasket. At the same time, the position of the stabilizing mechanism corresponds to the position of the window on the precast wall. At this time, the four casters at the bottom of the base plate are locked, the extended end of the first hydraulic cylinder is controlled to extend to its maximum length, the servo motor is turned on, and it is slowly rotated in the forward direction, driving the bidirectional threaded screw to rotate. This causes the first and second moving sleeves to move away from each other, so that the four guide wheels slowly limit the precast wall and prevent it from shaking. Then, the external lifting device is controlled to slowly lower the precast wall, and the four guide wheels guide its lowering path, accurately inserting the connecting steel bars into the corresponding installation holes at the bottom of the precast wall. This speeds up the construction and installation of the precast wall and prevents injury to the surrounding auxiliary workers.

[0028] In use, after the precast wall is installed, the extended end of the second hydraulic cylinder is extended to its maximum length, pushing the counterweight on the moving vehicle away from the precast wall. Simultaneously, the fixing pin on the railing drives the L-shaped frame to rotate, causing the anti-slip plate to fit tightly against the top surface of the building's roof slab. The displacement of the counterweight changes the center of gravity of the positioning auxiliary device, increasing the pressure on the anti-slip plate and further improving its stability efficiency. This operation is relatively simple and does not require subsequent disassembly. By controlling the retraction and extension of the casters of the second hydraulic cylinder, the positioning auxiliary device can be moved to the next auxiliary work position, thereby improving the efficiency of precast wall construction. Attached Figure Description

[0029] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0030] Figure 1 This is a flowchart of the prefabricated exterior wall construction method in this invention;

[0031] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0032] Figure 3 This is a schematic diagram of the stabilizing mechanism structure of the present invention;

[0033] Figure 4 This is a three-dimensional schematic diagram of the transmission unit structure of the present invention;

[0034] Figure 5 This is a schematic diagram of the positioning mechanism structure of the present invention;

[0035] Figure 6 This is a three-dimensional schematic diagram of the support unit structure of the present invention.

[0036] In the diagram: 1. Connecting frame; 2. Mounting frame; 3. Positioning mechanism; 4. Opening; 5. Base plate; 6. Building roof slab; 7. Limiting plate; 8. Shim; 9. Stabilizing mechanism; 10. Precast wall; 301. Counterweight; 302. Fixing pin; 303. Support unit; 304. Moving vehicle; 305. Guardrail; 306. Second hydraulic cylinder; 3031. Anti-slip plate; 3032. Connecting rod; 3033. Pin shaft; 3034. L-shaped frame; 901. Transmission unit; 902. Positioning block; 903. Guide wheel; 904. Support plate; 905. First hydraulic cylinder; 906. Servo motor; 907. Second clamping frame; 908. Control board; 909. First clamping frame; 9011. Bidirectional threaded screw; 9012. Second moving sleeve; 9013. First moving sleeve; 9014. Rotating seat; 9015. Lever. Detailed Implementation

[0037] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1-6 As shown, the construction method for insulated and waterproof prefabricated exterior walls specifically includes the following steps:

[0039] Step 1: Install shims 8 at the connecting steel bars of the building top slab 6 to provide support for the precast wall 10, and then lift the precast wall 10 with a lifting device and slowly move it to the construction site.

[0040] Step 2: The positioning auxiliary device is manually moved to an auxiliary work position on one side of the precast wall 10 to assist in the installation of the precast wall 10, thereby speeding up the construction and installation process.

[0041] Step 3: After the precast wall 10 is installed, the elevation and levelness of the precast wall 10 are checked using a detection device to prevent errors.

[0042] Step 4: Waterproof and thermal insulation material was applied to the outer wall of the precast wall 10 by manual labor and a coating device to ensure the quality of the building construction.

[0043] Please see Figures 2-6As shown, in the positioning auxiliary device of step two above, both sets of guide units rotate, allowing the first clamping frame 909 and the second clamping frame 907 to work with the corresponding guide wheels 903 to quickly and stably limit the precast wall 10 at the construction position, avoiding the process of manual stabilization and preventing safety accidents. In the positioning auxiliary device of step two above, the four guide wheels 903 guide the precast wall 10 at the construction position, facilitating the quick and accurate insertion of the connecting steel bars into the corresponding mounting holes at the bottom of the precast wall 10, thus accelerating the construction speed of the precast wall 10. In the positioning auxiliary device of step two above, the bidirectional threaded screw 9011 locks the positions of the first moving sleeve 9013 and the second moving sleeve 9012 to prevent them from malfunctioning. Sliding avoids affecting the efficiency of installing the precast wall 10; in the positioning auxiliary device of step two above, the second hydraulic cylinder 306 pushes the counterweight 301 away from the precast wall 10, changing the position of the center of gravity of the positioning auxiliary device, thereby increasing the stability efficiency of the positioning auxiliary device for the precast wall 10; in the positioning auxiliary device of step two above, the lateral movement of the railing 305 drives the L-shaped frame 3034 to flip, so that the anti-slip plate 3031 is in close contact with the building top plate 6, preventing the bottom plate 5 from moving and affecting the positioning effect of the precast wall 10; in the positioning auxiliary device of step two above, the counterweight 301 moves towards the anti-slip plate 3031, increasing the pressure on the anti-slip plate 3031, further increasing the stability of the bottom plate 5.

[0044] Please see Figure 2 and Figure 3 As shown, the above-mentioned positioning auxiliary device includes a base plate 5 set on the building top plate 6, a precast wall 10 set on one side of the base plate 5, a mounting frame 2 fixedly connected to the top of the base plate 5 away from the precast wall 10, a stabilizing mechanism 9 for quickly limiting the precast wall 10 set on the top of the mounting frame 2, a connecting frame 1 for supporting the stabilizing mechanism 9 fixedly installed on the top of the base plate 5, and an opening 4 opened at the bottom of the mounting frame 2, and a positioning mechanism 3 for preventing the precast wall 10 from tilting is set inside the opening 4.

[0045] Please see Figure 2 and Figure 3 As shown, the aforementioned stabilizing mechanism 9 includes a first hydraulic cylinder 905 fixedly mounted on the mounting bracket 2. The first hydraulic cylinder 905 is arranged horizontally, and a control plate 908 is fixedly mounted on the extended end of the first hydraulic cylinder 905. The position of the control plate 908 corresponds to the position of the window of the precast wall 10, and two guide units for guiding the precast wall 10 are symmetrically arranged on the top surface of the control plate 908. The two guide units are arranged left and right, and a transmission unit 901 for driving the two guide units is arranged in the middle of the control plate 908.

[0046] Please see Figure 3As shown, the aforementioned guide unit includes a first clamping frame 909 and a second clamping frame 907 rotatably connected to the top surface of the control plate 908. The ends of the first clamping frame 909 and the second clamping frame 907 away from the control plate 908 are rotatably provided with guide wheels 903 corresponding to the wall surface of the precast wall 10. The top surface of the control plate 908 is also fixedly connected with four positioning blocks 902 for preventing the first clamping frame 909 and the second clamping frame 907 from rotating excessively.

[0047] Please see Figure 3 and Figure 4 As shown, the transmission unit 901 includes a first movable sleeve 9013 and a second movable sleeve 9012 that are slidably disposed on the top surface of the control plate 908 via a guide rail. A lever 9015 is fixedly installed on the top of both the first movable sleeve 9013 and the second movable sleeve 9012. The ends of the two sets of first clamping frames 909 and second clamping frames 907 that are away from the guide wheel 903 are respectively movably connected to the corresponding lever 9015.

[0048] Please see Figure 3 and Figure 4 As shown, a rotating seat 9014 is fixedly connected to the top surface of the control board 908. A bidirectional threaded screw 9011 is rotatably mounted on the rotating seat 9014. The two sections of the bidirectional threaded screw 9011 are respectively threadedly connected to the middle of the first moving sleeve 9013 and the second moving sleeve 9012. A servo motor 906 is fixedly mounted on the end of the control board 908 near the first hydraulic cylinder 905 through a support plate 904. The output end of the servo motor 906 is fixedly connected to one end of the bidirectional threaded screw 9011.

[0049] Please see Figure 2 and Figure 5 As shown, the positioning mechanism 3 includes a moving vehicle 304 that is roll-connected to the top surface of the base plate 5. A counterweight 301 is placed on the top of the moving vehicle 304, and a railing 305 for limiting the counterweight 301 is fixedly installed on the top of the moving vehicle 304. A support unit 303 for preventing the base plate 5 from moving is provided on one side of the moving vehicle 304.

[0050] Please see Figure 2 and Figure 5 As shown, a second hydraulic cylinder 306 arranged horizontally is fixedly installed on the connecting frame 1, and the extended end of the second hydraulic cylinder 306 is fixedly connected to the railing 305.

[0051] Please see Figure 5 and Figure 6As shown, the aforementioned support unit 303 includes two L-shaped frames 3034 that are rotatably connected to the inner wall of the opening 4 via pins 3033. One end of the L-shaped frame 3034 is movably connected to the railing 305 via a fixing pin 302, and the other end of the L-shaped frame 3034 is fixedly connected to a connecting rod 3032. One end of the two connecting rods 3032 is fixedly connected to an anti-slip plate 3031.

[0052] Please see Figure 2 As shown, a connecting steel bar is fixedly inserted at the top of the building slab 6 corresponding to the construction position, and a shim 8 for supporting the precast wall 10 is fitted on the connecting steel bar.

[0053] Please see Figure 2 As shown, casters are fixedly installed at the four corners of the bottom of the base plate 5. The casters are in rolling connection with the top surface of the building roof plate 6. A limit plate 7 is fixedly connected to the end of the base plate 5 near the pad 8.

[0054] Working principle: When using this invention, firstly, as... Figure 2 As shown, by manually pushing the positioning auxiliary device to the auxiliary work position on one side of the precast wall 10, the limiting plate 7 contacts the gasket 8. At the same time, the position of the stabilizing mechanism 9 corresponds to the position of the window of the precast wall 10. At this time, the four universal wheels at the bottom of the base plate 5 are locked. Figure 2 and Figure 3 As shown, the extended end of the first hydraulic cylinder 905 is extended to its maximum length, and the servo motor 906 is turned on, causing it to slowly rotate in the forward direction, as shown. Figure 3 and Figure 4 As shown, the bidirectional threaded screw 9011 is driven to rotate, causing the first moving sleeve 9013 and the second moving sleeve 9012 to move away from each other. This allows the four guide wheels 903 to slowly limit the precast wall 10, preventing it from shaking. Then, the external lifting device is controlled to slowly lower the precast wall 10, guided by the four guide wheels 903 along its lowering path. This accurately inserts the connecting steel bars into the corresponding mounting holes at the bottom of the precast wall 10, accelerating the construction and installation of the precast wall 10 while preventing injury to surrounding auxiliary workers. Figure 2 and Figure 5 As shown, after the precast wall 10 is installed, the extended end of the second hydraulic cylinder 306 is extended to its maximum length, pushing the counterweight 301 on the moving vehicle 304 away from the precast wall 10. Simultaneously, as... Figure 5 and Figure 6As shown, the L-shaped frame 3034 is driven to rotate by the fixing pin 302 on the railing 305, so that the anti-slip plate 3031 is in close contact with the top surface of the building roof slab 6. The displacement of the counterweight block 301 changes the center of gravity of the positioning auxiliary device, which increases the pressure on the anti-slip plate 3031 and further improves the stability efficiency of the anti-slip plate 3031 on the positioning auxiliary device. The operation is relatively simple and does not require disassembly. By controlling the retraction and opening of the casters of the second hydraulic cylinder 306, the positioning auxiliary device can be moved to the next auxiliary work position, thereby improving the efficiency of the construction of the precast wall 10.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A construction method for thermally insulated and waterproof precast exterior walls, characterized by: Specifically, the following steps are included: Step 1: Install shims (8) at the connecting steel bars of the building top slab (6) to provide support for the precast wall (10), and then lift the precast wall (10) with a lifting device and slowly move it to the construction site; Step 2: Use a manual positioning auxiliary device to move to the auxiliary work position on one side of the precast wall (10) and assist in the installation of the precast wall (10); The positioning auxiliary device includes a base plate (5) set on the top plate (6) of the building. A mounting frame (2) is fixedly connected to the top of the base plate (5) away from the precast wall (10). A stabilizing mechanism (9) for quickly limiting the precast wall (10) is set on the top of the mounting frame (2). The stabilizing mechanism (9) includes a first hydraulic cylinder (905) fixedly mounted on the mounting bracket (2). The first hydraulic cylinder (905) is arranged horizontally, and a control plate (908) is fixedly mounted on the extended end of the first hydraulic cylinder (905). Two guide units for guiding the precast wall (10) are symmetrically arranged on the top surface of the control plate (908). The two guide units are arranged left and right. A transmission unit (901) for driving the two guide units is arranged in the middle of the control plate (908). The guide unit includes a first clamping frame (909) and a second clamping frame (907) rotatably connected to the top surface of the control plate (908). The ends of the first clamping frame (909) and the second clamping frame (907) away from the control plate (908) are rotatably provided with guide wheels (903) corresponding to the wall surface of the precast wall (10). The top surface of the control plate (908) is also fixedly connected with four positioning blocks (902) to prevent the first clamping frame (909) and the second clamping frame (907) from rotating excessively. Step 3: After the precast wall (10) is installed, the elevation and levelness of the precast wall (10) are checked by using a detection device; Step 4: Apply waterproof and heat-insulating material to the outer wall of the precast wall (10) manually with the help of an applicator.

2. The construction method of the thermally insulated and waterproof prefabricated exterior wall according to claim 1, characterized in that, In the second step, the positioning auxiliary device rotates through two sets of guide units, so that the first clamping frame (909) and the second clamping frame (907) cooperate with the corresponding guide wheel (903) to quickly and stably limit the precast wall (10) in the construction position.

3. The construction method of the thermally insulated and waterproof prefabricated exterior wall according to claim 1, characterized in that, In step two, the four guide wheels (903) in the positioning auxiliary device guide the precast wall (10) at the construction position, and quickly and accurately insert the connecting steel bars into the corresponding installation holes at the bottom of the precast wall (10).

4. The construction method of the thermally insulated and waterproof prefabricated exterior wall according to claim 1, characterized in that, In the positioning auxiliary device of step two, the positions of the first moving sleeve (9013) and the second moving sleeve (9012) are locked by a bidirectional threaded screw (9011).

5. The construction method of the thermally insulated and waterproof prefabricated exterior wall according to claim 1, characterized in that, In step two, the positioning auxiliary device pushes the counterweight (301) away from the precast wall (10) through the second hydraulic cylinder (306), changing the position of the center of gravity of the positioning auxiliary device.

6. The construction method of the thermally insulated and waterproof prefabricated exterior wall according to claim 1, characterized in that, In the second step, the positioning auxiliary device drives the L-shaped frame (3034) to flip by the lateral movement of the railing (305), so that the anti-slip plate (3031) is in close contact with the building top plate (6) to prevent the bottom plate (5) from moving.

7. The construction method of the thermally insulated and waterproof prefabricated exterior wall according to claim 1, characterized in that, In step two, the positioning auxiliary device moves the counterweight (301) toward the anti-slip plate (3031), thereby increasing the pressure on the anti-slip plate (3031).

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