Novel through-wall opposite-pull screw capable of being disassembled quickly

Abstract

A novel through-wall opposite-pull screw capable of being disassembled quickly comprises an opposite-pull rod body penetrating into a wall, an external thread arranged on the surface of one end of the opposite-pull rod body and a nut screwed on the external thread of the opposite-pull rod body, and further comprises an end rod and a limiting assembly, the end rod is arranged in the middle of one end of the opposite-pull rod body, and the limiting assembly is installed on the end rod; the limiting assembly comprises a rotating shaft, hoop rings, limiting blocks, concave cavities, springs, limiting discs, convex blocks, grooves and shaft holes, the two hoop rings are installed at one end of the end rod through the rotating shaft, the two concave cavities are symmetrically formed in the end, close to the opposite-pull rod body, of the end rod, the limiting blocks are fixed to one sides of the hoop rings, and the springs are installed in the concave cavities; the pull rod body is novel in structure and ingenious in conception, the pull rod body can be conveniently installed and used, and for a narrow space or an area with one side free of air, the difficulty and danger of nut installation and disassembly are reduced.

Description

Technical Field

[0001] The utility model relates to a tie rod, in particular to a novel quick-disassembly wall-through tie rod. Background Technique

[0002] The wall-through tie rod is a component used for supporting and fixing formworks in engineering construction. It consists of two screw rods and a connecting support member arranged between the two screw rods and connected to the threads of the two screw rods. Fasteners are arranged at the ends of the screw rods.

[0003] However, the commonly used wall-through screw rods in the current market are all metal screw rods and metal fasteners. Such screw rods are usually processed with threads by using Q235 round steel through a screw thread machine or a thread rolling machine. A large amount of industrial waste such as metal chips and dust will be generated during the processing. Moreover, such screw rods have the disadvantages of large self-weight, complex processing procedures, poor resistance to concrete corrosion, and high total cost. When installing and disassembling the tie bolts, a large operating space is required on both sides of the formwork. For narrow spaces or areas with one side being open, the difficulty and danger of installing and disassembling nuts are relatively large. Content of the Utility Model

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a novel quick-disassembly wall-through tie rod, which effectively solves the problems mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: The utility model includes a tie rod body penetrating the wall, an external thread opened on the surface of one end of the tie rod body, and a nut screwed on the external thread of the tie rod body. It also includes an end rod and a limiting component. A middle part of one end of the tie rod body is provided with an end rod, and a limiting component is installed on the end rod;

[0006] The limiting component includes a rotating shaft, a hoop, a limiting block, a concave cavity, a spring, a limiting disk, a convex block, a groove, and a shaft hole. Two hoops are installed at one end of the end rod through the rotating shaft. Two concave cavities are symmetrically opened at one end of the end rod close to the tie rod body. A limiting block is fixed on one side of the hoop. A spring is installed inside the concave cavity. Convex blocks are arranged at the ends of the hoops on one side of the end rod. Grooves are opened at the positions corresponding to the convex blocks on the hoops on the other side of the end rod.

[0007] Preferably, the diameter of the end rod is smaller than the diameter of the tie rod body.

[0008] Preferably, limiting disks are arranged at both ends of the rotating shaft.

[0009] Preferably, shaft holes are opened at the positions corresponding to the rotating shaft on the hoop and the end rod.

[0010] Preferably, the tie rod body, the end rod, and the limiting component are all made of PVC material.

[0011] Preferably, after both hoop rings on the end rod are rotated by ninety degrees, they abut against each other and are limited by the deployed limiting blocks.

[0012] Beneficial effects: When the present utility model is in use, the tie rod body is inserted into the hole drilled through the wall. During the insertion, due to the extrusion force, the limiting block squeezes the spring in the concave cavity, and the limiting block will not expand in the hole. When the tie rod body passes through the hole, the spring in the concave cavity extends, and the extended spring pushes the limiting block. In this way, when the nut is rotated and the tie rod body is pulled, the limiting blocks at one end of the tie rod body expand and abut against each other, so that the outer end of the tie rod body is limited by the limiting blocks. The operation is simple and convenient. When disassembling, unscrew the nut, and the whole can be removed.

[0013] The structure of the present utility model is novel and ingenious, which is convenient for the installation and use of the tie rod body, and reduces the difficulty and danger of installing and disassembling nuts in narrow spaces or areas with one side being airtight. Description of the Drawings

[0014] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0015] Figure 1 is the overall structural schematic diagram of the present utility model;

[0016] Figure 2 is the side view of the hoop ring of the present utility model;

[0017] Figure 3 is the present utility model Figure 2 structural schematic diagram of A therein;

[0018] Reference numerals in the drawings: 1, tie rod body; 2, external thread; 3, nut; 4, end rod; 5, limiting assembly; 6, rotating shaft; 7, hoop ring; 8, limiting block; 9, concave cavity; 10, spring; 11, limiting disc; 12, convex block; 13, groove; 14, shaft hole. Detailed Description of the Embodiments

[0019] The following further describes in detail the specific embodiments of the present utility model in conjunction with the attached Figures 1-3 drawings.

[0020] Embodiment 1, given by Figures 1-3 The present utility model provides a new type of quickly detachable through-wall tie rod, including a tie rod body 1 penetrating into the wall, an external thread 2 provided on the surface of one end of the tie rod body 1, and a nut 3 screwed on the external thread 2 of the tie rod body 1. It further includes an end rod 4 and a limiting assembly 5. A middle part of one end of the tie rod body 1 is provided with an end rod 4, and a limiting assembly 5 is installed on the end rod 4;

[0021] The limiting component 5 includes a rotating shaft 6, a hoop 7, a limiting block 8, a concave cavity 9, a spring 10, a limiting disk 11, a convex block 12, a groove 13 and a shaft hole 14. One end of the end rod 4 is provided with two hoops 7 through the rotating shaft 6. Two concave cavities 9 are symmetrically arranged at one end of the end rod 4 close to the tension rod body 1. A limiting block 8 is fixed on one side of the hoop 7. A spring 10 is installed inside the concave cavity 9. Convex blocks 12 are arranged at the ends of the hoops 7 on one side of the end rod 4. Grooves 13 are arranged at the positions corresponding to the convex blocks 12 on the hoops 7 on the other side of the end rod 4. The limiting block 8 is of an arc-shaped structure.

[0022] The diameter of the end rod 4 is smaller than that of the tension rod body 1, which is convenient for the use of the end rod 4.

[0023] Limiting disks 11 are arranged at both ends of the rotating shaft 6, which is convenient for limiting the ends of the rotating shaft 6.

[0024] Shaft holes 14 are arranged at the positions corresponding to the rotating shaft 6 on both the hoop 7 and the end rod 4, which is convenient for the installation and use of the rotating shaft 6.

[0025] The tension rod body 1, the end rod 4 and the limiting component 5 are all made of PVC material, so that the tension rod body 1, the end rod 4 and the limiting component 5 are light in weight and simple to process.

[0026] The two hoops 7 on the end rod 4 are both abutted together after rotating 90 degrees and are limited by the unfolded limiting blocks 8, which is convenient for the unfolded limiting use of the limiting blocks 8.

[0027] Working principle: When the utility model is in use, the tension rod body 1 is inserted into the hole drilled in the wall. During the insertion, due to the extrusion force, the limiting block 8 squeezes the spring 10 in the concave cavity 9, and the limiting block 8 will not unfold in the hole. When the tension rod body 1 passes through the hole, the spring 10 in the concave cavity 9 extends, and the spring 10 extends to push the limiting block 8. In this way, when the nut 3 is rotated and the tension rod body 1 is pulled, the limiting blocks 8 at one end of the tension rod body 1 unfold and abut together, so as to limit the outer end of the tension rod body 1 through the limiting blocks 8. The operation is simple and convenient. When disassembling, unscrew the nut 3, and the whole can be removed.

[0028] Beneficial effects: The structure of the utility model is novel and ingenious in conception, which is convenient for the installation and use of the tension rod body 1, and reduces the difficulty and danger of installing and disassembling nuts in narrow spaces or areas with one side being airtight.

[0029] Persons in the art shall connect all the electrical components in this case to their adapted power supplies through wires, and appropriate controllers and encoders should be selected according to the actual situation to meet the control requirements. For the specific connection and control sequence, the electrical connection should be completed according to the sequence of operation among the electrical components in the following working principle. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and no further description of electrical control will be given.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A novel quick-disassembly wall-piercing tie rod, comprising a tie rod body (1) penetrating the wall, an external thread (2) formed on one end surface of the tie rod body (1), and a nut (3) screwed onto the external thread (2) of the tie rod body (1), characterized in that: It also includes an end rod (4) and a limiting assembly (5), wherein the middle portion of one end of the tie rod body (1) is provided with an end rod (4), and the limiting assembly (5) is installed on the end rod (4); The limiting assembly (5) includes a rotating shaft (6), a hoop (7), a limiting block (8), a cavity (9), a spring (10), a limiting plate (11), a protrusion (12), a groove (13) and an axial hole (14). One end of the end rod (4) is provided with two hoop rings (7) through the rotating shaft (6). Two concave cavities (9) are symmetrically provided at one end of the end rod (4) close to the pull rod body (1). The limiting block (8) is fixed on one side of the hoop ring (7). A spring (10) is installed inside the concave cavity (9). The ends of the hoop ring (7) on one side of the end rod (4) are provided with protrusions (12). The hoop ring (7) on the other side of the end rod (4) is provided with a groove (13) at the position corresponding to the protrusion (12).

2. The novel quick-detachable wall-piercing tie rod according to claim 1, characterized in that: The diameter of the end rod (4) is smaller than the diameter of the tie rod body (1).

3. A novel quick-disassembly wall-piercing tie rod according to claim 1, characterized in that: Limiting plates (11) are provided at both ends of the rotating shaft (6).

4. A novel quick-detachable wall-piercing tie rod according to claim 1, characterized in that: The hoop (7) and the end rod (4) are both provided with shaft holes (14) at positions corresponding to the rotating shaft (6).

5. A novel quick-disassembly wall-piercing tie rod according to claim 1, characterized in that: The tie rod body (1), the end rod (4) and the limit assembly (5) are all made of PVC material.

6. The novel quick-disassembly wall-piercing tie rod according to claim 1, characterized in that: The two hoops (7) on the end rod (4) are both brought into contact with each other after being rotated ninety degrees and are limited by the expanded limiting block (8).

Images