Special opposite-pull screw rod for reinforcing super-thick wall body of linear accelerator machine room

Abstract

The utility model provides a linear accelerator machine room super thick wall reinforcing special opposite-pull screw, which comprises a main screw and auxiliary screws arranged at the two ends of the main screw, the main screw comprises a main body part in the middle and main connecting parts at the two ends of the main body part, one end of each auxiliary screw is provided with an auxiliary connecting part, and the other end of each auxiliary screw is provided with a connecting part. A thread part is arranged at the end, away from the auxiliary connecting part, of the auxiliary screw rod, the main connecting part and the auxiliary connecting part are connected and fixed through a double-hole sleeve, internal threads are arranged in the double-hole sleeve, and external threads are arranged on the side faces of the main connecting part and the auxiliary connecting part; the end face of the main connecting part and the end face of the auxiliary connecting part penetrate out of the end face of the double-hole sleeve, the auxiliary screw is further provided with a baffle, and the baffle is arranged at the end, close to the thread part, of the auxiliary connecting part. According to the utility model, the whole installation process becomes fast, errors are easy to control, and the installation precision and the safety and economy of on-site construction are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pair of pull screw special for reinforcing super -thick wall of linear accelerator machine room. BACKGROUND

[0002] The medical linear accelerator is a device for accelerating electrons to high energy by using microwave electromagnetic field. Through generating MV level electron line and X ray irradiation of malignant tumor, its growth is inhibited and dies. The linear accelerator is more and more widely applied in the tumor treatment field due to high energy and large field of electron ray.

[0003] The pair of pull screw is the connecting piece of the wall body construction of the linear accelerator machine room, and the prior art CN218149814U discloses a pair of pull screw for reinforcing wall body of linear accelerator machine room, the connecting rod with threaded section is welded at both ends of the fixed rod, so that the pair of pull screw can be conveniently connected and assembled with the reinforcing structure on both sides of the concrete wall, the fixed rod and the connecting rod can be connected by double-sided welding or single-sided welding, and the water stop piece is arranged in the center of the fixed rod, so that the water stop piece can block the gap at the joint of the fixed rod and the concrete wall, effectively prevents water from flowing in the gap at the joint of the fixed rod and the concrete wall, and improves the anti-leakage effect of the concrete wall.

[0004] However, the fixed rod and the connecting rod are connected by welding, the welding reliability of the fixed rod and the connecting rod is poor due to the difference in material quality, there is a certain risk of mold explosion, and the pullout strength mainly depends on the welding quality, and the center axis of the connecting rod at both ends of the fixed rod needs to be located on the same horizontal line during processing, and the processing efficiency is low. UTILITY MODEL CONTENTS

[0005] The utility model provides a pair of pull screw special for reinforcing super -thick wall of linear accelerator machine room can effectively solve above -mentioned problem.

[0006] The utility model is realized as follows:

[0007] A pair of pull screw special for reinforcing super -thick wall of linear accelerator machine room, including main screw rod and the vice screw rod of being arranged in both ends of main screw rod, the main screw rod includes the main body portion and the main connection portion of both ends thereof, the vice screw rod one end is equipped with vice connection portion, the vice screw rod is equipped with threaded portion in the end away from vice connection portion, the main connection portion with vice connection portion is connected and is fixed through double hole sleeve, be equipped with internal thread in double hole sleeve, the main connection portion with vice connection portion side are equipped with external thread, and the end face of main connection portion with vice connection portion all are worn out double hole sleeve end face, still be equipped with a baffle on vice screw rod, the baffle is arranged in vice connection portion near threaded portion one end.

[0008] As a further improvement, one side of the double-hole sleeve is provided with two alignment hooks, and the two alignment hooks are at the same height.

[0009] As a further improvement, the main body part is provided with at least two water stopping parts, and the outer side of the water stopping part is inwardly recessed.

[0010] As a further improvement, the main body part is further provided with a water stopping piece.

[0011] As a further improvement, the main screw and the auxiliary screw are made of HRB400 steel bars.

[0012] As a further improvement, the diameter D of the main screw and the auxiliary screw is 14mm.

[0013] As a further improvement, a fixing clamp is further included, and the fixing clamp is arranged on the auxiliary screw.

[0014] The beneficial effects of the present application are as follows:

[0015] The main screw and the auxiliary screw are connected through the double-hole sleeve, and the threaded connection is adopted, so that the installation is more convenient. The auxiliary screw is further provided with a baffle, which is convenient for positioning and controlling the length of the whole, and is convenient for fixing the formwork assembly. The whole installation process of the tension screw is fast and the error is easy to control, and the installation precision, safety and economy of the on-site construction can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Fig. 1 is a top view structural schematic diagram of the tension screw, the concrete wall and the formwork assembly after connection provided by the embodiments of the present application.

[0018] Fig. 2 is a double-hole sleeve structural schematic diagram provided by the embodiments of the present application.

[0019] Reference signs:

[0020] 1, main screw; 11, main body; 12, main connecting part; 13, water stop; 2, auxiliary screw; 21, auxiliary connecting part; 22, threaded part; 23, baffle; 3, double-hole sleeve; 31, alignment hook; 4, water stop piece; 5, template assembly; 6, fixed clamp. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only to represent selected embodiments of the present application.

[0022] In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly and specifically limited.

[0023] Referring to Figs. 1-2 As shown in the drawings, a special tension screw for reinforcing the super-thick wall of a linac room, comprising a main screw 1 and an auxiliary screw 2 arranged at both ends of the main screw 1, the main screw 1 comprising a main body 11 in the middle and main connecting parts 12 at both ends thereof, the auxiliary screw 2 being provided with an auxiliary connecting part 21 at one end, and the auxiliary screw 2 being provided with a threaded part 22 at the end away from the auxiliary connecting part 21, the main connecting parts 12 and the auxiliary connecting parts 21 being connected and fixed by a double-hole sleeve 3, the double-hole sleeve 3 being provided with internal threads, the main connecting parts 12 and the auxiliary connecting parts 21 being provided with external threads on the side surfaces thereof, and the end surfaces of the main connecting parts 12 and the auxiliary connecting parts 21 penetrating the end surface of the double-hole sleeve 3, the auxiliary screw 2 being further provided with a baffle 23, which is fixed on the auxiliary screw 2 and cannot be detached, the baffle 23 being arranged at the end of the auxiliary connecting part 21 close to the threaded part 22, the end surface of the main screw 1 abutting against the baffle 23 after the main screw 1 and the auxiliary screw 2 are assembled by the double-hole sleeve 3, which is convenient for positioning and controlling the length of the whole, and can facilitate the fixation of the template assembly 5, and the end surface of the main screw 1 and the baffle 23 can be spot-welded and fixed if necessary after assembly, which can prevent loosening and fix the length, wherein the length ratio of the external threads on the side surfaces of the main connecting parts 12 and the auxiliary connecting parts 21 is 1:1, the length ratio of the length of the external threads to the length of the double-hole sleeve 3 is 1.2:1 to 1.6:1, and the external threads are all 4.8-grade threads.

[0024] Specifically, the double-hole sleeve 3 is provided with two alignment hooks 31 on the same side, and the two alignment hooks 31 are at the same horizontal height. When the counter pull rod is installed, the counter pull rod can be positioned by the four alignment hooks 31 on the two double-hole sleeves 3, so that the axes of the two auxiliary screw rods 2 and the main screw rod 1 can be in the same plane, avoiding that the axis of the main screw rod 1 is not in the horizontal state due to the influence of the assembly of the two ends of the main screw rod 1 after installation, and affecting the tensile strength. When positioning by the alignment hooks 31, a thin line is taken and hung on the alignment hooks 31 on the outer side of the double-hole sleeve 3 at both ends, and passes through the two alignment hooks 31 in the middle. The overall state of the thin line and the positional relationship between the thin line and the two alignment hooks 31 in the middle are observed.

[0025] Specifically, in order to improve the radiation resistance of the concrete wall and the tensile strength of the main screw rod 1 in the concrete wall, the main body 11 is provided with at least two water-stopping parts 13. The outer side of the two water-stopping parts 13 is inwardly recessed, which can increase the engagement contact force between the main screw rod 1 and the concrete wall, avoid the phenomenon that the rays escape to the outside of the wall along the smooth rod body, and improve the radiation resistance of the concrete wall. One of the two water-stopping parts 13 is inwardly recessed, so that even if there is a gap between the main screw rod 1 and the concrete wall, the gap path has a reverse rotation to reduce the probability of ray escape.

[0026] Specifically, in order to further improve the radiation resistance of the concrete wall, a water-stopping piece 4 with a large area can be arranged on the main body 11. The water-stopping piece 4 can be arranged on the main body 11 in the form of welding.

[0027] Specifically, in order to ensure the structural strength, the main screw rod 1 and the auxiliary screw rod 2 are both made of HRB400 steel bars, which can meet the strength requirements.

[0028] Specifically, in the embodiment, when the main screw rod 1 and the auxiliary screw rod 2 are both made of HRB400 steel bars, and the diameters D of the main screw rod 1 and the auxiliary screw rod 2 are both 14 mm, the strength requirements can be met.

[0029] Specifically, in order to be fixed with the formwork assembly 5, a fixing clamp 6 is further arranged on the auxiliary screw rod 2 and cooperates with the threaded part 22 to fix the formwork assembly 5.

[0030] The above only describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A special tension screw for reinforcing the super-thick wall of a linac machine room, comprising a main screw (1) and a sub-screw (2) arranged at both ends of the main screw (1), characterized in that: the main screw (1) comprises a main body portion (11) in the middle and a main connecting portion (12) at both ends thereof, the sub-screw (2) is provided with a sub-connecting portion (21) at one end thereof, the sub-screw (2) is provided with a threaded portion (22) at the end away from the sub-connecting portion (21), the main connecting portion (12) and the sub-connecting portion (21) are connected and fixed by a double-hole sleeve (3), the double-hole sleeve (3) is provided with an internal thread, the main connecting portion (12) and the sub-connecting portion (21) are both provided with an external thread on the side surface, and the end surfaces of the main connecting portion (12) and the sub-connecting portion (21) both pass through the end surface of the double-hole sleeve (3), the sub-screw (2) is further provided with a baffle (23), and the baffle (23) is arranged at the end of the sub-connecting portion (21) close to the threaded portion (22). One side surface of the double-hole sleeve (3) is provided with two alignment hooks (31), and the two alignment hooks (31) are at the same height.

2. A special bolted screw for reinforcing the super-thick wall of a linac bunker according to claim 1, characterized in that, The main body portion (11) is provided with at least two water-stopping portions (13), and the outer side of the water-stopping portion (13) is inwardly recessed.

3. A special bolt for reinforcing the super-thick wall of a linac room according to claim 1, characterized in that, The main body portion (11) is further provided with a water-stopping piece (4).

4. The special tension screw rod for reinforcing the super-thick wall of a linac bunker according to claim 1 or 2, characterized in that, The main screw (1) and the sub-screw (2) are both made of HRB400 steel.

5. The special bolted screw for reinforcing the super-thick wall of a linac bunker according to claim 1, characterized in that, The diameters D of the main screw (1) and the sub-screw (2) are both 14 mm.

6. A special bolted screw for reinforcing the super-thick wall of a linac bunker according to claim 5, characterized in that, Further comprising a fixing clamp (6) arranged on the sub-screw (2).

7. The special tension screw rod for reinforcing the super-thick wall of a linac bunker according to claim 1, characterized in that, ​

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