Stepped screw for formwork of linear accelerator structure wallboard

Abstract

The utility model discloses a stepped screw rod for a linear accelerator structure wallboard formwork, which comprises a middle stepped connecting screw rod, a first external connecting screw rod, a conical internal thread sleeve and a second external connecting screw rod, the two ends of the middle stepped connecting screw are connected with one end of the first external connecting screw and one end of the second external connecting screw respectively through conical internal thread sleeves, and the other end of the first external connecting screw and the other end of the second external connecting screw correspondingly penetrate through the formworks on the two sides respectively and are fixed through fixing structures. The stepped screw can effectively shield ray radiation.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and particularly relates to a stepped screw rod for formwork support of a wall panel of a linear accelerator structure. Background Art

[0002] A tie rod is a component for supporting and fixing formwork in construction. A conventional tie rod consists of two screw rods and a connecting piece arranged between the two screw rods and threadedly connected to the two screw rods. The conventional tie rod is linear. For example, Chinese Patent CN206220511U discloses a fixed formwork screw rod support system, and its fixed screw rod is linear.

[0003] Medical equipment needs to be installed inside the linear accelerator structure of a hospital project. A large amount of radiation, such as alpha rays, beta rays, and gamma rays, will be generated during the operation of these devices. These rays are harmful to the human body. Therefore, the structure must be dense during construction and the steel bars cannot be exposed. Since gamma rays, that is, neutron rays, are most likely to conduct directly along the steel bars, in the formwork engineering during construction, the traditional linear tie rod is not applicable. Summary of the Utility Model

[0004] Aiming at the above problems, the purpose of the utility model is to provide a stepped screw rod for formwork support of a wall panel of a linear accelerator structure.

[0005] The specific technical solution is as follows:

[0006] A stepped screw rod for formwork support of a wall panel of a linear accelerator structure includes an intermediate stepped connecting screw rod, a first external connecting screw rod, a tapered internal thread sleeve, and a second external connecting screw rod. Both ends of the intermediate stepped connecting screw rod are connected to one end of the first external connecting screw rod and the second external connecting screw rod respectively through the tapered internal thread sleeve. The other ends of the first external connecting screw rod and the second external connecting screw rod respectively pass through the formwork on both sides and are fixed by a fixing structure.

[0007] Further, the intermediate stepped connecting screw rod includes an intermediate connecting screw rod, a first connecting screw rod, a second connecting screw rod, and an internal thread double sleeve. The internal thread double sleeve includes two sleeves connected in parallel up and down. Both ends of the intermediate connecting screw rod are connected to one end of the first connecting screw rod and the second connecting screw rod respectively through the internal thread double sleeve, forming a stepped structure with upper and lower staggering. The other ends of the first connecting screw rod and the second connecting screw rod are connected to the first external connecting screw rod and the second external connecting screw rod respectively through the tapered internal thread sleeve.

[0008] Further, both ends of the first external connecting screw rod, the second external connecting screw rod, the intermediate connecting screw rod, the first connecting screw rod, and the second connecting screw rod are external thread structures.

[0009] Further, a polyethylene cylindrical end cap is provided at the end of the internal thread double sleeve, which plays a role in shielding the conduction of rays.

[0010] Further, the fixing structure includes steel pipes disposed above and below the ends of the first external screw rod and the second external screw rod, U-shaped clamps and nuts disposed at the ends of the first external screw rod and the second external screw rod and outside the steel pipes, and the steel pipes are closely attached to the formwork.

[0011] Further, a polyethylene ring is sleeved on the outer surface of the tapered female screw sleeve, and the female screw double sleeve is a polyethylene sleeve embedded with a female screw metal connection section.

[0012] Further, one end of the intermediate stepped connecting screw rod facing the outer formwork is higher than the end facing the inner linear accelerator structure formwork.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1) By adopting the stepped screw rod of the present utility model, through the setting of the stepped structure and the partition of the polyethylene material, the ray radiation can be effectively shielded;

[0015] 2) A polyethylene ring is provided on the outer surface of the tapered female screw sleeve, which not only shields the radiation but also prevents the generation of cracks due to excessive movement during the formwork removal process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structure schematic diagram of the present utility model;

[0017] Figure 2 is a disassembled structure schematic diagram of the present utility model;

[0018] Figure 3 is a detailed enlarged view of part A;

[0019] Figure 4 is an assembly schematic diagram of the present utility model.

[0020] In the figure: 1, intermediate stepped connecting screw rod; 11, intermediate connecting screw rod; 12, first connecting screw rod; 13, second connecting screw rod; 14, female screw double sleeve; 141, polyethylene cylindrical head cover; 2, first external screw rod; 3, tapered female screw sleeve; 31, polyethylene ring; 4, second external screw rod; 5, fixing structure; 51, steel pipe; 52, U-shaped clamp; 53, nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following further describes the present utility model with reference to the accompanying drawings of the specification, but the protection scope of the present utility model is not limited thereto.

[0022] As Figures 1 to 3As shown in the figure, a stepped screw for formwork support of the wall panel of a linear accelerator structure includes a set of intermediate stepped connecting screws 1, a first external connecting screw 2, two tapered internal thread sleeves 3, and a second external connecting screw 4. The intermediate stepped connecting screw 1 includes an intermediate connecting screw 11, a first connecting screw 12, a second connecting screw 13, and two internal thread double sleeves 14. Each internal thread double sleeve 14 has two vertically parallel connected sleeves. The two ends of the first external connecting screw 2, the second external connecting screw 4, the intermediate connecting screw 11, the first connecting screw 12, and the second connecting screw 13 are all external thread structures. One end of the intermediate connecting screw 11 is inserted into the lower sleeve of the internal thread double sleeve 14 and is threadedly connected, and the other end is inserted into the upper sleeve of another internal thread double sleeve 14 and is threadedly connected. One end of the first connecting screw 12 is inserted into the upper sleeve of the internal thread double sleeve 14 and is threadedly connected, and the other end is threadedly connected to the first external connecting screw 2 through the tapered internal thread sleeve 3. One end of the second connecting screw 13 is inserted into the lower sleeve of another internal thread double sleeve 14 and is threadedly connected, and the other end is threadedly connected to the second external connecting screw 4 through the tapered internal thread sleeve 3. The end of the internal thread double sleeve 14 is limited by a polyethylene cylindrical head cover 141 to form a stepped structure with staggered upper and lower levels. A polyethylene ring 31 is sleeved on the outer surface of the tapered internal thread sleeve 3. The internal thread double sleeve 14 is a polyethylene sleeve with an embedded internal thread metal connecting section.

[0023] As Figure 4 shown, one end of the intermediate stepped connecting screw 1 facing the outer formwork is higher than one end facing the inner linear accelerator structure formwork. One ends of the first external connecting screw 2 and the second external connecting screw 4 respectively pass through the formworks on both sides and are fixed by a fixing structure 5. The fixing structure 5 includes steel pipes 51 arranged above and below the ends of the first external connecting screw 2 and the second external connecting screw 4, U-shaped clamps 52 arranged at the ends of the first external connecting screw 2 and the second external connecting screw 4 and located outside the steel pipes 51, and nuts 53. The steel pipes 51 are arranged closely against the formworks.

[0024] During the construction process, the threaded connections are completed in sequence from left to right, and the torque needs to reach 65 N.m.

Claims

1. A stepped screw for formwork support of the wall panel of a linear accelerator structure, characterized in that, It includes an intermediate stepped connecting screw (1), a first external connecting screw (2), a tapered internal thread sleeve (3) and a second external connecting screw (4). Both ends of the intermediate stepped connecting screw (1) are connected to one end of the first external connecting screw (2) and the second external connecting screw (4) respectively through the tapered internal thread sleeve (3). The other ends of the first external connecting screw (2) and the second external connecting screw (4) respectively pass through the templates on both sides and are fixed by a fixing structure (5).

2. The stepped screw for formwork support of the wall panel of the linear accelerator structure according to claim 1, wherein, The intermediate stepped connecting screw (1) includes an intermediate connecting screw (11), a first connecting screw (12), a second connecting screw (13) and an internal thread double sleeve (14). The internal thread double sleeve (14) includes two sleeves connected in parallel up and down. Both ends of the intermediate connecting screw (11) are connected to one end of the first connecting screw (12) and the second connecting screw (13) respectively through the internal thread double sleeve (14), forming a stepped structure with upper and lower staggering. The other ends of the first connecting screw (12) and the second connecting screw (13) are connected to the first external connecting screw (2) and the second external connecting screw (4) respectively through the tapered internal thread sleeve (3).

3. The stepped screw for formwork support of the wall panel of a linear accelerator structure according to claim 1, wherein, Both ends of the first external connecting screw (2), the second external connecting screw (4), the intermediate connecting screw (11), the first connecting screw (12) and the second connecting screw (13) are external thread structures.

4. The stepped screw for formwork support of the structure wall panel of a linear accelerator according to claim 2, characterized in that, The end of the internal thread double sleeve (14) is provided with a polyethylene cylindrical end cover (141).

5. The stepped screw for formwork support of the wall panel of the linear accelerator structure according to claim 1, characterized in that, The fixing structure (5) includes steel pipes (51) arranged above and below the ends of the first external connecting screw (2) and the second external connecting screw (4), U-shaped clamps (52) and nuts (53) arranged at the ends of the first external connecting screw (2) and the second external connecting screw (4) and located outside the steel pipes (51). The steel pipes (51) are arranged close to the templates.

6. The stepped screw for formwork support of the wall panel of the linear accelerator structure according to claim 2, characterized in that, A polyethylene ring (31) is sleeved on the outer surface of the tapered internal thread sleeve (3). The internal thread double sleeve (14) is a polyethylene sleeve with an embedded internal thread metal connecting section.

7. The stepped screw for formwork support of the wall panel of the linear accelerator structure according to claim 1, characterized in that, One end of the intermediate stepped connecting screw (1) facing the outer template is higher than the end facing the inner linear accelerator structure template.

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