Prefabricated wall grouting compensation device

Abstract

The utility model discloses a grouting compensation device for a prefabricated wall, which relates to the technical field of constructional engineering and comprises a semi-cylindrical water container, two hoses are connected to the bottom of the semi-cylindrical water container, and the other ends of the hoses are respectively connected with a liquid separation exhaust device I and a liquid separation exhaust device II which are the same; the liquid separation and exhaust device II comprises an upper semi-cylindrical pipe and a lower semi-cylindrical pipe which are connected; the upper part of the upper semi-cylindrical pipe is connected with the hose; an upper piston and a lower piston are arranged in a cylindrical cavity formed in the upper half cylindrical pipe and the lower half cylindrical pipe; an adjusting mechanism is arranged on the lower piston and used for driving the lower piston to move or rotate in the vertical direction. The upper piston and the lower piston are both provided with exhaust holes which are communicated up and down; the device can effectively exhaust air, saves grouting materials, is convenient to assemble and disassemble, can be used repeatedly, and avoids the risk that grouting is not dense due to the fact that slurry at the top of the prefabricated wall grouting sleeve shrinks and falls back to the maximum extent.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, and particularly relates to a grouting compensation device for precast walls. Background Technique

[0002] The grouting compensation device for precast walls is a device used to compensate for the shrinkage and fall void of the liquid level above the grouting sleeve of the precast wall. In the prior art, the water container in this device is a component for storing ordinary water, which is suspended on the precast wall and connected to the transparent liquid separation and exhaust device through a force transmission pipe. The transparent liquid separation and exhaust device is fixed on the outermost edge grouting hole within each compartment range of the precast wall (the wall can also be not compartmentalized if it is short). It exhausts the air inside the precast wall sleeve through a piston and a handle, and can isolate the slurry from ordinary water to prevent them from mixing. When using this device for compensation grouting, it is necessary to select appropriate equipment and operation methods according to specific situations.

[0003] For example, the patent document with the publication number CN108627424A discloses a portable monitoring and compensation device and method for the grouting density of the communication cavity of precast walls. The compensation device includes a grouting funnel, a grouting pipe, and a fixing frame for fixing the grouting funnel. The grouting pipe is provided with a grouting vertical pipe and a grouting horizontal pipe. The top end of the grouting vertical pipe is connected to the grouting funnel, the bottom end of the grouting vertical pipe is connected to one end of the grouting horizontal pipe, the other end of the grouting horizontal pipe is provided with an opening, and air holes are provided on the pipe wall of the grouting horizontal pipe. The usage method is as follows:

[0004] (1) Assemble the device. First, select the length of the grouting horizontal pipe according to the grouting requirement, connect the grouting horizontal pipe to the grouting vertical pipe, then place the grouting funnel on the fixing frame and connect the grouting vertical pipe to the grouting funnel;

[0005] (2) Place the device. Insert the grouting horizontal pipe of the device into the communication cavity, fix the fixing frame after adjusting the position;

[0006] (3) Grouting monitoring. Conduct grouting in the communication cavity, and observe the height of the slurry surface in the grouting vertical pipe, which is the grouting height in the steel bar sleeve of the wall; after the grouting is completed, observe whether there is any change in the liquid level in the grouting vertical pipe;

[0007] (4) Grouting compensation. If the liquid level in the grouting vertical pipe drops in step (3), through the grouting funnel, grout into the vertical pipe and the grouting horizontal pipe to compensate for grouting in the communication cavity until the liquid level in the grouting vertical pipe no longer drops;

[0008] (5) Monitor and compensate, and then withdraw the device. After the grouting starts to set, withdraw the fixing frame to extract the grouting horizontal pipe from the communication cavity.

[0009] The above-mentioned device and method solve the problems in the prior art during use, such as the inability to completely compensate for the voids caused by the shrinkage and fall-back of the grout, poor exhaust, waste of grout, and difficulty in disassembly and cleaning. However, the above-mentioned device cannot completely compensate for the voids caused by the shrinkage and fall-back of the grout, and at the same time, there are problems of poor exhaust, waste of grout, and difficulty in disassembly and cleaning. Summary of the Invention

[0010] The purpose of the present invention is to provide a precast wall grouting compensation device to solve the following technical problems:

[0011] How to completely compensate for the voids caused by the shrinkage and fall-back of the precast wall grouting slurry.

[0012] The purpose of the present invention can be achieved by the following technical solutions:

[0013] A precast wall grouting compensation device includes a semi-cylindrical water container, and two hoses are connected to the bottom of the semi-cylindrical water container. The other ends of the hoses are respectively connected to the same liquid-separating exhaust device one and liquid-separating exhaust device two;

[0014] Among them, the liquid-separating exhaust device two includes an upper semi-cylindrical pipe and a lower semi-cylindrical pipe connected to each other. The upper part of the upper semi-cylindrical pipe is connected to the hose; a guiding mechanism is provided between the upper piston and the cylindrical cavity formed in the upper semi-cylindrical pipe and the lower semi-cylindrical pipe to enable the upper piston to move only in the up and down directions; an adjusting mechanism is provided on the lower piston to drive the lower piston to move or rotate in the up and down directions;

[0015] Both the upper piston and the lower piston are provided with exhaust holes communicating up and down; by adjusting the mechanism to rotate the lower piston, the two exhaust holes can be aligned.

[0016] As a further scheme of the present invention: through holes corresponding to each other are provided at the centers of the upper piston and the lower piston, and a middle rotating shaft buckle is inserted through the two through holes.

[0017] As a further scheme of the present invention: two fixing ears are symmetrically provided on the side surface of the semi-cylindrical water container, and the two fixing ears are used to be fixed on the wall through screws.

[0018] As a further scheme of the present invention: a force transmission pipe is fixedly connected to the bottom of the semi-cylindrical water container, and a tee is connected to the bottom of the force transmission pipe, and the two hoses are respectively connected to the tee.

[0019] As a further scheme of the present invention: the upper part of the upper semi-cylindrical pipe is provided with an upper column thread port and is connected to the hose through the upper column thread port; the upper part of the lower semi-cylindrical pipe is provided with a lower column thread port and is connected to the upper semi-cylindrical pipe through the lower column thread port.

[0020] As a further solution of the present utility model: a first clamping ring and a second clamping ring are provided on the inner wall of the cylindrical cavity, wherein the first clamping ring is located above the upper piston, and the second clamping ring is located below the lower piston.

[0021] As a further solution of the present utility model: the guiding mechanism includes two symmetrical clamping bars vertically arranged on the inner surface of the upper semi-cylindrical pipe, and two clamping grooves opened on the side wall of the upper piston and corresponding to the two clamping bars respectively, and the two clamping bars are respectively embedded in the two clamping grooves.

[0022] As a further solution of the present utility model: the adjusting mechanism includes a handle connected to the side wall of the lower piston and an inverted L-shaped sliding groove opened on the side wall of the lower semi-cylindrical pipe, and the handle penetrates through the inverted L-shaped sliding groove and extends outside the lower semi-cylindrical pipe.

[0023] As a further solution of the present utility model: a water baffle is connected to the bottom of the lower piston, and a notch adapted to the shape of the water baffle is opened on the second clamping ring, and the water baffle slides through the notch.

[0024] As a further solution of the present utility model: piston gaskets are provided on the sides of the upper piston and the lower piston close to each other.

[0025] The beneficial effects of the present utility model:

[0026] The present utility model is provided with a liquid separation and exhaust device, and it is judged whether the void in the sleeve of the precast wall 7 meets the requirements by whether the lower piston bottoms to the second clamping ring within half an hour or whether the water level change of the water container 1 exceeds 4 mm; if the grouting is abnormal, it may be that the first grouting process is not rigorous, the grouting amount is small and then it is blocked, leaving more pores, or it may be that the grouting plugging of the mortar joint is not tight and leakage occurs. It is necessary to check the mortar joint plugging situation of the sitting mortar and plug it again. After determining that other joints are plugged tightly, the precast wall needs to be re-grouted with a grouting machine, and the detection steps are repeated again. Ensure that the lower piston does not contact the second clamping ring or the water level of the water container changes no more than 4 mm before and after, which means that there is no void in the sleeve of the precast wall, and the work is completed at this time; it can effectively exhaust air, save grouting materials, is convenient for installation and disassembly, can be used repeatedly for many times, and maximally avoids the risk of incomplete grouting caused by the shrinkage and fall of the grout at the top of the grouting sleeve of the precast wall. Description of the Drawings

[0027] The present utility model will be further described below with reference to the drawings.

[0028] Figure 1 It is a schematic structural diagram of a precast wall grouting compensation device in an embodiment of the present utility model;

[0029] Figure 2 It is a schematic structural diagram of a liquid separation and exhaust device in a precast wall grouting compensation device in an embodiment of the present utility model;

[0030] Figure 3 It is a schematic internal structure diagram of the liquid separation and exhaust device in the precast wall grouting compensation device in an embodiment of the present utility model;

[0031] Figure 4 It is a sectional view of the liquid separation and exhaust device in the precast wall grouting compensation device in an embodiment of the present utility model;

[0032] Figure 5 It is a top view of the liquid separation and exhaust device in the precast wall grouting compensation device in an embodiment of the present utility model.

[0033] In the figure: 1. Water container; 11. Fixed ear; 2. Force transmission pipe; 21. Three-way joint; 22. Hose; 3. Liquid separation and exhaust device one; 4. Liquid separation and exhaust device two; 41. Upper semi-cylindrical pipe; 411. Upper column thread port; 412. Card strip; 413. Snap ring one; 42. Lower semi-cylindrical pipe; 421. Bottom thread port; 422. Inverted L-shaped sliding groove; 423. Snap ring two; 424. Lower column thread port; 431. Upper piston; 4311. Card slot; 4312. Exhaust hole; 432. Piston gasket; 433. Lower piston; 434. Handle; 435. Water baffle; 436. Middle shaft buckle; 5. Grout outlet; 6. Grout injection hole; 7. Precast wall. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0035] As Figure 1 shown, a new type of precast wall grouting compensation device includes a water container 1, two hoses 22, two liquid separation and exhaust devices one 3 with exactly the same structure, and a liquid separation and exhaust device two 4; among them, two fixed ears 11 are symmetrically assembled on the left and right side faces of the water container 1, and the two fixed ears 11 are fixed on the precast wall 7 with self-tapping screws; the water container 1 adopts a semi-circular structure and fits with the wall surface of the precast wall 7, which can increase its stability; scale lines are also provided on the water container 1 to observe the internal water level.

[0036] A water container 1 is connected to a force transmission pipe 2 at the lower end outlet. A tee joint 21 is connected to the lower part of the force transmission pipe 2. One end of two hoses 22 is respectively connected to the tee joint 21, and the other end is respectively connected to a liquid separation and exhaust device I 3 and a liquid separation and exhaust device II 4; the two hoses 22 are used to transfer the water in the water container 1 to the liquid separation and exhaust device I 3 and the liquid separation and exhaust device II 4 to realize the conduction of pressure.

[0037] The structures of the liquid separation and exhaust device I 3 and a liquid separation and exhaust device II 4 are completely the same. Taking the liquid separation and exhaust device II 4 as an example for introduction, please refer to Figures 2 - 4 , where: the liquid separation and exhaust device II 4 includes an upper semi-cylindrical pipe 41 and a lower semi-cylindrical pipe 42. The upper semi-cylindrical pipe 41 is in a straight cylindrical shape, and an upper column thread port 411 is provided on its upper part and is connected to the hose 22 through the upper column thread port 411; the lower semi-cylindrical pipe 42 is in an L shape, and a lower column thread port 424 is provided at one end and is connected to the upper semi-cylindrical pipe 41 through the lower column thread port 424, and a bottom thread port 421 is provided at the other end for fixedly connecting to the grout outlet 5 on the precast wall 7; an integrated cylindrical cavity is formed inside the upper semi-cylindrical pipe 41 and the lower semi-cylindrical pipe 42.

[0038] An upper piston 431 and a lower piston 433 are arranged inside the cylindrical cavity. Among them, a first snap ring 413 and a second snap ring 423 are arranged on the inner wall of the cylindrical cavity. The first snap ring 413 is located above the upper piston 431, and the second snap ring 423 is located below the lower piston 433 to ensure that the upper and lower pistons slide within a fixed height range. Two card strips 412 symmetrically arranged at 180° are provided on the inner surface of the upper semi-cylindrical pipe 41, and card slots 4311 corresponding to the two card strips 412 are provided on the side wall of the upper piston 431. The card strips 412 and the card slots 4311 form a guiding mechanism to prevent the upper piston 431 from rotating left and right and ensure that it can only slide up and down.

[0039] Vertical through holes are opened at the centers of the upper piston 431 and the lower piston 433. The two through holes are connected by a middle shaft buckle 436 and can drive the overall piston to move up and down. Piston gaskets 432 are respectively provided on the contact sides of the upper piston 431 and the lower piston 433 close to each other, which can increase the sliding between the pistons and slow down the wear; exhaust holes 4312 are left at the 4 / 9 radius positions of the upper and lower pistons. By rotating the lower piston 433 through an adjustment mechanism, the two exhaust holes 4312 can be aligned.

[0040] The adjusting mechanism includes an inverted L-shaped sliding groove 422 provided on the side wall of the lower half-cylindrical tube 42 and a handle 434 connected to the side wall of the lower piston 433. Among them, the inverted L-shaped sliding groove 422 is formed by connecting a horizontal notch with an arc length of 10 mm and a vertical notch with a length of 30 mm, and its overall shape is an inverted L shape; the handle 434 passes through the inverted L-shaped sliding groove 422 and extends to the outside of the lower half-cylindrical tube 42. By manually controlling the handle 434, the lower piston 433 can be driven to move up and down or rotate horizontally in the vertical notch. Please refer to Figure 5 , when the horizontal rotation angle is 45°, the exhaust holes 4312 in the lower piston 433 and the upper piston 431 can be aligned, so that the two exhaust holes 4312 are connected through.

[0041] The inner diameters of the first snap ring 413 and the second snap ring 423 are smaller than the diameters of the upper and lower pistons and larger than the radius of the piston where the exhaust hole 4312 is located to ensure smooth exhaust; a water baffle 435 is connected to the bottom edge of the lower piston 433. The width arc length of the water baffle 435 is 24 mm and the height is 30 mm, which can ensure that there is no slurry leakage when the lower piston 433 rotates horizontally and slides up and down. The handle 434 is located on the center line of the width of the water baffle 435 and is 5 mm away from the bottom of the lower piston 433 in the height direction, so as to ensure that during the sliding process of the handle 434, the range of the water baffle 435 is at least more than 5 mm away from the inverted L-shaped sliding groove 422, which can ensure that there is no slurry leakage when the lower piston 433 rotates and slides.

[0042] The working principle of the present invention:

[0043] When carrying out the grouting work, first put the lower half-cylindrical tube 42 in the two liquid separation and exhaust devices 3 and 4 into the slurry outlet hole 5 through the bottom threaded port 421, rotate the handle 434 to align the exhaust holes 4312 of the upper piston 431 and the lower piston 433 up and down, and then carry out the conventional grouting operation. The bottom grouting hole 6 is grouted, and when continuous columnar slurry appears at the upper slurry outlet hole 5, it is blocked. When observing that the two liquid separation and exhaust devices 3 and 4 are filled, immediately rotate the handle 434 to stagger the two exhaust holes 4312 to seal the slurry;

[0044] After the grouting is completed and all the grouting holes 5 are blocked, connect the water container 1 and the force transmission pipe 2, then fill the water container 1 with water, observe the scale of the water container 1, and stop when the entire force transmission pipe 2 is full of water and the water container 1 is filled to 3 / 4, then pull the handle 434 up and down for about 10 times to stir the grouting material, so as to discharge the gas that may exist in the prefabricated wall 7, and then stop toggling the handle 434 to allow the water container 1 to naturally transmit force to the gap in the sleeve of the prefabricated wall 7. If the lower piston 433 falls to the bottom of the clamping ring 2 423 within half an hour, or the water level of the water container 1 changes by more than 4m m, it means that there is a large gap in the sleeve of the prefabricated wall 7 and the grouting is abnormal. It may be that the first grouting process is not rigorous, and the grouting is sealed when the amount of grouting is small, leaving more pores. It is also possible that the grouting seams are not sealed tightly and leakage occurs. It is necessary to check the grouting seams and seal them again. After confirming that other gaps are sealed tightly, the prefabricated wall 7 needs to be re-grouted with a grouting machine, and the above steps are repeated again to ensure that the lower piston 433 does not contact the retaining ring 2 423, or the water level of the water container 1 changes by no more than 4mm. This means that there is no gap in the sleeve of the prefabricated wall 7, and the work is completed.

[0045] The device can effectively exhaust air, save grouting materials, is easy to install and disassemble, can be used repeatedly, and avoids the risk of loose grouting caused by shrinkage and fall of the grouting sleeve top of the prefabricated wall 7 to the greatest extent.

[0046] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present utility model. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] The above has described in detail an embodiment of the present utility model, but the above content is only a preferred embodiment of the present utility model and cannot be considered as limiting the scope of implementation of the present utility model. All equivalent changes and improvements made according to the scope of application of the present utility model shall still fall within the scope covered by the patent of the present utility model.

Claims

1. A precast wall grouting compensation device, characterized in that, It includes a semi-cylindrical water container (1). Two hoses (22) are connected to the bottom of the semi-cylindrical water container (1). The other ends of the hoses (22) are respectively connected to the same liquid separation and exhaust device one (3) and liquid separation and exhaust device two (4). Among them, the liquid separation and exhaust device two (4) includes an upper semi-cylindrical pipe (41) and a lower semi-cylindrical pipe (42) connected to each other. The upper part of the upper semi-cylindrical pipe (41) is connected to the hose (22). In the cylindrical cavity formed in the upper semi-cylindrical pipe (41) and the lower semi-cylindrical pipe (42), there are an upper piston (431) and a lower piston (433). A guiding mechanism is provided between the upper piston (431) and the cylindrical cavity to enable the upper piston (431) to move only in the up and down directions. An adjusting mechanism is provided on the lower piston (433) to drive the lower piston (433) to move or rotate in the up and down directions. Both the upper piston (431) and the lower piston (433) are provided with exhaust holes (4312) that communicate up and down. By adjusting the mechanism to rotate the lower piston (433), the two exhaust holes (4312) can be aligned.

2. The precast wall grouting compensation device according to claim 1, characterized in that, Corresponding through holes are opened at the centers of the upper piston (431) and the lower piston (433), and a middle shaft buckle (436) is inserted through the two through holes.

3. The precast wall grouting compensation device according to claim 1, wherein, Two fixing ears (11) are symmetrically arranged on the side surface of the semi-cylindrical water container (1), and the two fixing ears (11) are used to be fixed on the wall through screws.

4. The precast wall grouting compensation device according to claim 1, characterized in that A force transmission pipe (2) is fixedly connected to the bottom of the semi-cylindrical water container (1). A tee (21) is connected to the bottom of the force transmission pipe (2), and the two hoses (22) are respectively connected to the tee (21).

5. The precast wall grouting compensation device according to claim 1, characterized in that, The upper part of the upper semi-cylindrical pipe (41) is provided with an upper column thread port (411) and is connected to the hose (22) through the upper column thread port (411). The upper part of the lower semi-cylindrical pipe (42) is provided with a lower column thread port (424) and is connected to the upper semi-cylindrical pipe (41) through the lower column thread port (424).

6. The precast wall grouting compensation device according to claim 1, characterized in that, A retaining ring one (413) and a retaining ring two (423) are provided on the inner wall of the cylindrical cavity. Among them, the retaining ring one (413) is located above the upper piston (431), and the retaining ring two (423) is located below the lower piston (433).

7. The precast wall grouting compensation device according to claim 1, characterized in that, The guiding mechanism includes two symmetrically arranged clamping strips (412) vertically arranged on the inner surface of the upper semi-cylindrical pipe (41), and two clamping grooves (4311) opened on the side wall of the upper piston (431) and corresponding to the two clamping strips (412) respectively. The two clamping strips (412) are respectively embedded in the two clamping grooves (4311).

8. The precast wall grouting compensation device according to claim 1, characterized in that, The adjusting mechanism includes a handle (434) connected to the side wall of the lower piston (433) and an inverted L-shaped sliding groove (422) opened on the side wall of the lower semi-cylindrical pipe (42). The handle (434) passes through the inverted L-shaped sliding groove (422) and extends outside the lower semi-cylindrical pipe (42).

9. The precast wall grouting compensation device according to claim 6, wherein, A water baffle (435) is connected to the bottom of the lower piston (433). A notch adapted to the shape of the water baffle (435) is opened on the retaining ring two (423), and the water baffle (435) slidably passes through the notch.

10. The precast wall grouting compensation device according to claim 1, characterized in that, Piston gaskets (432) are provided on the sides of the upper piston (431) and the lower piston (433) that face each other.

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