A unilateral adjustable wall screw

Abstract

The present application relates to wall formwork reinforcing technical field, especially to a unilateral adjustable wall screw, which comprises a screw, the opposite sides of one end of the screw are rotationally connected with limiting assemblies, a channel is axially penetrated in the screw, a push-pull rod is arranged in the channel, one end of the push-pull rod is connected with the limiting assembly through a connecting piece, and the other end of the push-pull rod extends outward along the channel; the other end of the screw is detachably connected with a mountain-shaped clamp, the mountain-shaped clamp and the limiting assemblies are located on the two sides of the wall, and main keels are arranged between the mountain-shaped clamp, the limiting assemblies and the wall. The screw can be used to control the opening and closing of the limiting assemblies on one side, and the wall sleeve can be smoothly installed and removed, which is simple and convenient, and solves the problems of swelling and slurry leakage caused by polystyrene foam board, and the operation is simple and easy to operate during construction, which eliminates the safety hidden trouble caused by the use of polystyrene foam board.

Description

A single-sided adjustable through-wall screw Technical Field

[0001] This invention relates to the field of wall formwork reinforcement technology, and in particular to a single-sided adjustable through-wall bolt. Background Technology

[0002] The support and removal of formwork for areas with small clearance expansion joints has always been a construction challenge due to the narrow space and inaccessibility to workers. Some projects employ a method of constructing one wall first, with the other wall constructed at least one floor later. During the construction of the other wall, polystyrene foam boards are used as permanent formwork within the joint, before constructing the next shear wall. However, this method is prone to problems such as formwork bulging and grout leakage, affecting project quality and leading to material waste due to the inability to remove the outer formwork. Not only does it compromise construction quality, but it also results in significant material waste.

[0003] This invention can effectively solve the above problems, and while ensuring the quality of the project, it has the advantages of being easy to operate, economical and efficient. Summary of the Invention

[0004] The purpose of this invention is to provide a single-sided adjustable through-wall bolt, which can solve the problems of bulging and grout leakage caused by the use of polystyrene foam board, and is simple and easy to operate during construction.

[0005] This invention provides a unilateral adjustable through-wall screw rod, comprising a screw rod, with both opposite sides of one end of the screw rod rotatably connected to a limiting component. An axially extending channel runs through the inside of the screw rod, and a push-pull rod is provided within the channel. One end of the push-pull rod is connected to the limiting component via a connector, and the other end extends outward along the channel. The other end of the screw rod is detachably connected to a U-shaped clip. The U-shaped clip and the limiting component are located on opposite sides of a wall, and a main keel is provided between the U-shaped clip, the limiting component, and the wall.

[0006] Preferably, the screw has an external thread at the end near the mountain-shaped clip, the length of the external thread on the screw is greater than half the length of the screw, and the outer side of the screw near the limiting component is smooth.

[0007] Preferably, the limiting component includes a back stop rod rotatably connected to the connecting member. One end of the back stop rod is rotatably connected to the outside of the screw. The rotation angle between the back stop rod and the screw is 0-90°. A limiting groove is provided on the screw corresponding to the end face of the back stop rod. The connecting member passes through the limiting groove and is rotatably connected to the back stop rod to provide power for the rotation of the back stop rod.

[0008] Preferably, the limiting component further includes a secondary stop bar, which is rotatably connected to the other end of the back stop bar. The rotation angle between the secondary stop bar and the back stop bar is 0-90°, and the back stop bar has a groove corresponding to the secondary stop bar.

[0009] Preferably, an elastic component is provided between the secondary stop and the back stop; when the elastic component is compressed, the angle between the secondary stop and the back stop is 0°, and the secondary stop is located inside the groove; after the elastic component returns to its original position, the angle between the secondary stop and the back stop is 90°.

[0010] Preferably, the end of the secondary stop bar away from the back stop bar has a smooth arc surface.

[0011] Preferably, the wall is provided with a through-wall sleeve through which the screw can pass, the wall includes a wall to be reinforced, and templates and secondary keels are provided on both sides of the wall to be reinforced, and the main keel is made of steel pipe.

[0012] Preferably, the screw is threadedly connected to the nut, and the mountain-shaped clamp is located between the nut and the main keel.

[0013] Beneficial effects:

[0014] This invention, through the combination of a push-pull rod and a limiting component, allows for unilateral control of the limiting component's opening and closing, enabling the screw to smoothly pass through the wall sleeve for installation and removal—simple and convenient. It also solves the problems of formwork bulging and grout leakage associated with the current use of polystyrene foam boards, and is easy to operate during construction. While significantly saving materials and labor, it eliminates the safety hazards associated with the use of polystyrene foam boards. This invention can be widely applied in various confined spaces and where workers find it inconvenient to reinforce formwork. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 is a schematic diagram of the initial state structure of the limiting component of the present invention;

[0017] Figure 2 is a magnified structural diagram of point A;

[0018] Figure 3 is a schematic diagram of the opening state structure of the limiting component of the present invention;

[0019] Figure 4 is a magnified structural diagram of point B;

[0020] Figure 5 is a schematic diagram of the working state of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1-Screw, 2-Push-pull rod, 3-External thread, 4-Channel, 5-Limiting groove, 6-Back stop bar, 7-Secondary stop bar, 8-Groove, 9-Connector, 10-Elastic component, 11-Narrow space, 12-Wall to be reinforced, 13-Formwork, 14-Secondary keel, 15-Through-wall sleeve, 16-Main keel, 17-U-shaped clip, 18-Nut, 19-Limiting component, 20-Already completed wall. Detailed Implementation

[0023] 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Example 1

[0027] As shown in Figures 1-5, a single-sided adjustable through-wall screw includes a screw 1. Both sides of one end of the screw 1 are rotatably connected to a limiting component 19. A channel 4 runs through the screw 1 along the axial direction. A push-pull rod 2 is provided in the channel 4. One end of the push-pull rod 2 is connected to the limiting component 19 through a connector 9, and the other end extends outward along the channel 4. The push-pull rod 2 can move along the channel 4. The limiting component 19 includes a back stop rod 6 rotatably connected to the connector 9. One end of the back stop rod 6 is rotatably connected to the outside of the screw 1 through a hinge. The rotation angle between the back stop rod 6 and the screw 1 is 0-90°. A limiting groove 5 is provided on the screw 1 corresponding to the end face of the back stop rod 6. The connector 9 passes through the limiting groove 5 and is rotatably connected to the back stop rod 6. The push-pull rod 2 pulls the connector 9 to provide power for the rotation of the back stop rod 6. The two ends of the connector 9 are respectively hinged to the back stop rod 6 and the push-pull rod 2, and the hinge points of the limiting components 19 on both sides of the screw 1 and the connector 9 are staggered. The width of the limiting groove 5 is less than the width of the back stop 6, and the portion of the back stop 6 wider than the limiting groove 5 is rotatably connected to the outside of the screw 1. The limiting assembly 19 also includes a secondary stop 7, which is rotatably connected to the other end of the back stop 6. The rotation angle between the secondary stop 7 and the back stop 6 is 0-90°, and the back stop 6 has a groove 8 corresponding to the secondary stop 7.

[0028] A spring assembly 10 is provided between the secondary stop lever 7 and the back stop lever 6. The secondary stop lever 7 can be opened by the spring assembly 10. When the spring assembly 10 is compressed, the angle between the secondary stop lever 7 and the back stop lever 6 is 0°, and the secondary stop lever 7 is located inside the groove 8. After the spring assembly 10 returns to its original position, the angle between the secondary stop lever 7 and the back stop lever 6 is 90°. The spring assembly 10 can be a common elastic component such as a spring. The end of the secondary stop lever 7 away from the back stop lever 6 has a smooth arc surface. When the angle between the back stop lever 6 and the screw 1 decreases, the arc surface of the secondary stop lever 7 abuts against the outer surface of the screw 1, thereby applying a force to compress the spring assembly 10, so that the angle between the secondary stop lever 7 and the back stop lever 6 becomes 0°. Both the secondary stop lever 7 and the back stop lever 6 are made of cast iron.

[0029] The other end of the screw 1 is detachably connected to the U-shaped clip 17. The U-shaped clip 17 and the limiting component 19 are located on both sides of the wall. A main keel 16 is provided between the U-shaped clip 17, the limiting component 19 and the wall. The main keel 16 is made of steel pipe. The screw 1 is threadedly connected to the nut 18. The U-shaped clip 17 is located between the nut 18 and the main keel 16. The end of the screw 1 near the U-shaped clip 17 has an external thread 3. The length of the external thread 3 on the screw 1 is greater than half the length of the screw 1. The outer side of the end of the screw 1 near the limiting component 19 is smooth.

[0030] The wall is equipped with a through-wall sleeve 15 through which the screw rod 1 can pass. The wall includes the wall to be reinforced 12, and templates 13 and secondary joists 14 are arranged sequentially on both sides of the wall to be reinforced 12. The secondary joists 14 are made of conventional materials such as timber. The length of the smooth section on the outer side of the screw rod 1 is greater than the sum of the diameter of the main joist 16 and the thickness of the templates 13 and secondary joists 14, but less than the sum of the diameter of the main joist 16 and the thickness of the templates 13, secondary joists 14 and the wall to be reinforced 12.

[0031] Working principle:

[0032] The template 13 and secondary keel 14 that need to be installed in the narrow space 11 between the wall to be reinforced 12 and the existing wall 20 are temporarily fixed and assembled by using the method of assembling large templates.

[0033] After drilling through-wall sleeve 15 holes in the assembled template 13 and secondary keel 14, the whole unit is hoisted to the designated position in the narrow space 11.

[0034] Drill holes in the wall 12 to be reinforced, install the through-wall sleeve 15, and pass one end of the single-sided adjustable through-wall screw provided by the present invention through the through-wall sleeve 15. At this time, the angle between the secondary stop rod 7 and the back stop rod 6 is 0°, and the secondary stop rod 7 is located inside the groove 8 of the back stop rod 6. The back stop rod 6 is in contact with the outer surface of the screw 1, which facilitates the passage through the through-wall sleeve 15.

[0035] By pulling the push-pull rod 2, the back stop rod 6 can be rotated through the connector 9 until the angle between the back stop rod 6 and the outer surface of the screw 1 is 90°. The end face of the back stop rod 6 abuts against the outer surface of the screw 1 for limiting. At this time, the spring assembly 10 returns, and the secondary stop rod 7 opens under the action of the spring assembly 10 until the angle between the secondary stop rod 7 and the back stop rod 6 is 90°.

[0036] Insert the main keel 16 steel pipe through the top of the narrow space 11 and insert it into the space between the back stop bar 6, the secondary stop bar 7 and the secondary keel 14.

[0037] Install the formwork 13, secondary keel 14 and main keel 16 on the side of the wall 12 to be reinforced away from the narrow space 11;

[0038] Install the mountain-shaped clip 17 on the screw 1, fix the main keel 16 between the secondary keel 14 and the mountain-shaped clip 17, and use the nut 18 to fix the mountain-shaped clip 17. Adjust the tightness of the nut 18 to adjust the overall verticality and flatness of the template 13 and the secondary keel 14.

[0039] Correct the formwork 13, inspect the formwork effect, and pour concrete in the confined space 11;

[0040] After pouring concrete, remove nuts 18, mountain-shaped clips 17, the corresponding main keel 16, and the corresponding side templates 13 and secondary keels 14.

[0041] Push the screw 1 and push-pull rod 2 to move the limiting component 19 away from the main keel 16. The back stop rod 6 rotates towards the screw 1 until the arc surface of the secondary stop rod 7 contacts the smooth outer surface of the screw 1. Under the force applied by the screw 1, the secondary stop rod 7 compresses the elastic component 10 and then retracts into the groove 8 of the back stop rod 6. At this time, pull the screw 1 and push-pull rod 2 as a whole to remove them from the through-wall sleeve 15.

[0042] The formwork 13 and secondary keel 14 of the wall 12 to be reinforced are hoisted and dismantled on the side near the narrow space 11, completing one round of installation.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A single-sided adjustable through-wall screw, characterized in that, The screw includes a screw rod, with both opposite ends of the screw rod rotatably connected to a limiting assembly. An axially extending channel runs through the screw rod, and a push-pull rod is installed within the channel. One end of the push-pull rod is connected to the limiting assembly via a connector, and the other end extends outward along the channel. The other end of the screw rod is detachably connected to a U-shaped clip. The U-shaped clip and the limiting assembly are located on opposite sides of a wall, and a main keel is provided between the U-shaped clip, the limiting assembly, and the wall. The limiting assembly includes a back stop rod rotatably connected to the connector. One end of the back stop rod is rotatably connected to the outside of the screw rod, and the rotation angle between the back stop rod and the screw rod is 0-90°. The screw rod... A limiting groove is provided on the end face of the back stop bar. The connecting piece passes through the limiting groove and is rotatably connected to the back stop bar, providing power for the rotation of the back stop bar. The limiting assembly also includes a secondary stop bar, which is rotatably connected to the other end of the back stop bar. The rotation angle between the secondary stop bar and the back stop bar is 0-90°. A groove is provided on the back stop bar corresponding to the secondary stop bar. An elastic component is provided between the secondary stop bar and the back stop bar. When the elastic component is compressed, the included angle between the secondary stop bar and the back stop bar is 0°, and the secondary stop bar is located inside the groove. After the elastic component returns to its original position, the included angle between the secondary stop bar and the back stop bar is 90°.

2. The single-sided adjustable through-wall screw according to claim 1, characterized in that, The screw has an external thread at the end near the mountain-shaped clip, and the length of the external thread on the screw is greater than half the length of the screw. The outer side of the screw near the limiting component is smooth.

3. The single-sided adjustable through-wall screw according to claim 1, characterized in that, The secondary stop bar has a smooth arc surface at the end away from the back stop bar.

4. The single-sided adjustable through-wall screw according to claim 1, characterized in that, The screw is threadedly connected to the nut, and the mountain-shaped clamp is located between the nut and the main keel.

5. The single-sided adjustable through-wall screw according to claim 1, characterized in that, The wall is provided with a through-wall sleeve through which the screw rod can pass. The wall includes the wall to be reinforced. Templates and secondary keels are provided on both sides of the wall to be reinforced. The main keel is made of steel pipe.

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