CN217992318U

CN217992318U - Auxiliary device for mounting drift tube of linear accelerator

Info

Publication number: CN217992318U
Application number: CN202222398662.1U
Authority: CN
Inventors: 马晓颖; 杨凡; 李永江; 李乾楠; 张潇
Original assignee: Shanghai Aipuqiang Particle Equipment Co ltd
Current assignee: Shanghai Aipuqiang Particle Equipment Co ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2022-12-09
Anticipated expiration: 2032-09-09

Abstract

The utility model relates to an auxiliary device for installing a drift tube of a linear accelerator, which comprises an alignment rod for passing through the central holes of a plurality of drift tubes, a clamp installed at the two ends of each drift tube and a fixed plate for clamping the connecting rods of the drift tubes; the hoop comprises a first main part and a second main part, a first end and a second end of the first main part and a first end and a second end of the second main part are both provided with connecting holes, and the middle parts of the first main part and the second main part are both provided with semicircular grooves; the first end of the first main part and the first end of the second main part are both hinged to a first connector, and the second end of the first main part and the second end of the second main part are detachably connected by a second connector, so that the clamp is switchable between an open state and a closed state. The utility model discloses can improve the installation effectiveness of drift tube, avoid the interference of adjacent drift tube in the installation or collision to cause the damage to the installation effectiveness is high, does not have the restriction to the design of linear accelerator cavity.

Description

Auxiliary device for mounting drift tube of linear accelerator

Technical Field

The utility model relates to a linear accelerator technical field, more specifically relate to an auxiliary device of linear accelerator drift tube installation.

Background

A linear accelerator is generally equipped with a large number (20 to 50) of drift tubes. The drift tube is complex in structure and divided into a magnet, a shell, an end cover, a water cooling channel and the like, the surface precision and the installation precision of the drift tube are required to be kept within +/-0.05 mm in errors in three orthogonal directions (namely three directions of an X axis, a Y axis and a Z axis), and the distance between two drift tubes is kept between 10mm and 60 mm.

At present, the common drift tube installation mode is manual independent installation, namely the drift tubes are installed in a cavity of a linear accelerator one by one through manual operation. The method has long installation time, and the adjacent drift tubes are easy to interfere or collide in the installation process, so that the surface of the drift tube is damaged, and the beam quality of the linear accelerator is influenced or the consumed power is overlarge in the use process.

In order to avoid the disadvantage of manual operation, the patent CN 111922944B proposes an auxiliary device for conveniently dismounting the drift tube. The auxiliary device can replace manual hand support, and is mainly composed of a supporting plate assembly for supporting the drift tube and a flange supporting assembly fixed on the cavity, so that the aim of facilitating installation is fulfilled. However, the mode of supporting and assisting installation of the independent bracket still needs to be installed one by one, the operation time is long, a proper cavity flange hole is needed for fixing the bracket, and the design of the cavity of the linear accelerator is limited.

SUMMERY OF THE UTILITY MODEL

For solving the problem among the above-mentioned prior art, the utility model provides an auxiliary device of linear accelerator drift tube installation can improve the installation effectiveness of drift tube, avoids the interference of adjacent drift tube in the installation or collision to cause the damage to the design of linear accelerator cavity does not have the restriction.

The utility model provides an auxiliary device for installing a drift tube of a linear accelerator, which comprises an alignment rod for passing through the central holes of a plurality of drift tubes, a clamp sleeved on the alignment rod and installed at two ends of each drift tube, and a fixed plate for clamping a plurality of connecting rods of the drift tubes; the hoop comprises a first main part and a second main part, wherein a first end and a second end of the first main part and a first end and a second end of the second main part are both provided with connecting holes, and the middle parts of the first main part and the second main part are both provided with semicircular grooves; the first end of the first main component and the first end of the second main component are both hinged to a first connecting piece, and the second end of the first main component and the second end of the second main component are detachably connected through a second connecting piece, so that the opening state and the closing state of the clamp can be switched.

Furthermore, the sections of the semicircular grooves perpendicular to the first direction are semicircular and have the same size, and the rotating shaft at the first end of the first main part, which is hinged to the first connecting piece, and the rotating shaft at the first end of the second main part, which is hinged to the first connecting piece, are perpendicular to the first direction.

Furthermore, two ends of the first connecting piece are provided with first through holes, and the first through holes correspond to the connecting holes at the first end of the first main part and the connecting holes at the first end of the second main part respectively.

Further, a first cylindrical fixing member passes through the connecting hole at the first end of the first main part and one first through hole of the first connecting member, and a second cylindrical fixing member passes through the connecting hole at the first end of the second main part and the other first through hole of the first connecting member, so that the first end of the first main part is connected with the first end of the second main part.

Further, the second connecting piece comprises a threaded rod and a rotating piece sleeved on the threaded rod.

Further, the intermediate portion of the rotary member has an internal thread that matches a thread on the threaded rod.

Furthermore, one end of the threaded rod is provided with a second through hole, and the second through hole corresponds to the connecting hole at the second end of the second main part; and the third cylindrical fixing piece penetrates through the connecting hole on the second end of the second main part and the second through hole so as to connect the threaded rod with the second main part.

Further, when the clamp is in the open state, the second end of the first main part is far away from the second end of the second main part to form an opening, so that the alignment rod can enter the corresponding position of the groove from the opening.

Further, when the clamp is in the closed state, the first main part and the second main part are opposed to each other so that the grooves are aligned to form a central hole of the clamp, the alignment rod is accommodated in the central hole, and the rotating member is attached to the first main part.

Furthermore, rubber is arranged in the central hole, one part of the rubber is embedded into the hoop, and the other part of the rubber protrudes out of the hoop.

The utility model discloses install the drift tube on same alignment stick in advance, after the angle of the connecting rod of drift tube has been adjusted through the fixed plate, wholly pack into linear accelerator's cavity together, can improve the installation effectiveness of drift tube, avoid the interference of adjacent drift tube in the installation or collision to cause the damage to the installation effectiveness is high, does not have the restriction to the design of linear accelerator cavity.

Drawings

Fig. 1 is a schematic structural diagram of an auxiliary device for installing a drift tube of a linear accelerator according to the present invention.

Fig. 2 (a) is a schematic view of the open state of the clip of fig. 1, and fig. 2 (b) is a schematic view of the closed state of the clip of fig. 1.

Fig. 3 is a schematic view of installation using the auxiliary device of fig. 1.

Detailed Description

The following description of the preferred embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1, the utility model provides an auxiliary device of linear accelerator drift tube installation, including the alignment stick 2, the cover that are used for passing the centre bore of a plurality of drift tubes 1 locate on the alignment stick and install the clamp 3 at every drift tube 1 both ends and clip the fixed plate 4 of the connecting rod of a plurality of drift tubes 1. Wherein, clamp 3 is fixed on aiming at stick 2 for the position of every drift tube 1 on aiming at stick 2 is fixed, and fixed plate 4 is used for adjusting the turned angle of connecting rod, so that the connecting rod direction of all drift tubes 1 is unanimous, thereby guarantees the accuracy of installation. It will be appreciated that the diameter of the alignment rod 2 is slightly smaller than the diameter of the central bore of the drift tube 1.

As shown in fig. 2, the clamp 3 includes two identical first main parts 311 and second main parts 312, the first end and the second end of the first main part 311 and the first end and the second end of the second main part 312 are both opened with a connection hole 32, and the middle parts of the first main part 311 and the second main part 312 are both provided with a semicircular groove 33. The first ends of the first and second

main parts

311 and 312 are each hingedly connected to the first connector 34, and the second ends of the first and second

main parts

311 and 312 are detachably connected by the second connector 35, so that the clamp 3 is switchable between an open state and a closed state.

Specifically, the cross sections of the semicircular grooves 33 in the direction perpendicular to the first direction (i.e., the direction parallel to the paper) are semicircular and have the same size, so that when the two semicircular grooves 33 are closed, a central hole 37 is formed, the axis of which is along the first direction; meanwhile, the rotating shaft of the first end of the first main part 311 hinged to the first connecting piece 34 and the rotating shaft of the first end of the second main part 312 hinged to the first connecting piece 34 are both perpendicular to the first direction. First through holes are formed at both ends of the first connecting member 34, the two first through holes correspond to the connecting hole at the first end of the first main part 311 and the connecting hole at the first end of the second main part 312, respectively, the first cylindrical fixing member 361 passes through the connecting hole at the first end of the first main part 31 and one first through hole of the first connecting member 34, and the second cylindrical fixing member 362 passes through the connecting hole at the first end of the second main part 312 and the other first through hole of the first connecting member 34, so that the first ends of the first main part 311 and the second main part 312 are connected together.

The second connecting member 35 includes a threaded rod 351 and a rotating member 352 sleeved on the threaded rod 351, one end of the threaded rod 351 is provided with a second through hole corresponding to the connecting hole at the second end of the second main part 312, and the third cylindrical fixing member 363 sequentially passes through the connecting hole at the second end of the second main part 312 and the second through hole on the threaded rod 351, so that the threaded rod 351 is connected with the second main part 312. As shown in fig. 2 (a), when the yoke 3 is in the open state, the second end of the first main part 311 is away from the second end of the second main part 312 to form an opening so that the alignment rod 2 can enter the groove 33 at a corresponding position from the opening. At this time, the first main part 311 and the second main part 312 may rotate about the first cylinder fixing part 361 and the second cylinder fixing part 362, respectively, and the second main part 312 and the threaded rod 351 may rotate about the third cylinder fixing part 363. The middle portion of the rotary member 352 has internal threads that mate with threads on the threaded rod 351 to enable the rotary member 352 to translate on the threaded rod 351 by rotation. As shown in fig. 2 (b), when the clamp 3 is in the closed state, the first main part 311 and the second main part 312 are opposed so that the two recesses 33 are aligned to form the central hole 37 of the clamp 3, and the alignment rod 2 is received in the central hole 37. At this time, both ends of the first and second

main members

311 and 312 can be fastened by rotating the threaded rod 351 of the second connecting member 35 and the rotary piece 352 such that a portion of the threaded rod 351 is aligned with the connecting hole of the second end of the first main member 311 and the rotary piece 352 is attached to the first main member 311. In addition, rubber is provided in the central hole 37 (corresponding to the two grooves 33) of the yoke 3, and a part of the rubber is embedded in the yoke 3 and another part of the rubber protrudes from the yoke 3 to increase friction between the yoke 3 and the alignment rod 2, so that the yoke 3 can be fixed on the alignment rod 2. It will be appreciated that the diameter of the alignment rod 2 is slightly smaller than the diameter of the central bore 37.

The operation process of using the auxiliary device to install the drift tube is as follows:

1) A drift tube 1 passes through an alignment rod 2, and clamps 3 in an opening state are arranged at two ends of the drift tube 1; after the position of the drift tube 1 on the alignment rod 2 is determined, the threaded rod 351 of the clamp 3 is inserted into the grooves of the second ends of the

main parts

311 and 312, the rotating part 352 of the second connecting piece 35 is rotated to make the rotating part 352 be attached to the first main part 311, and the clamp 3 is fixed on the alignment rod 2;

2) Repeating the step 1) until all the drift tubes 1 and the corresponding clamps 3 are installed;

3) Clamping all the connecting rods of the drift tube 1 by using a fixing plate 4, and adjusting the rotating angles of the connecting rods to keep the directions of all the connecting rods consistent;

4) As shown in fig. 3, a vertical rod 5 is used to connect the alignment rod 2 and the fixing plate 4, so that the drift tube 1, the alignment rod 2, the hoop 3, the fixing plate 4 and the vertical rod 5 are integrally installed in the cavity of the linear accelerator 6, the end parts of the connecting rods of all the drift tubes 1 are inserted into corresponding hole positions of the base 7, and the drift tubes 1 are locked and fixed after the installation state is finely adjusted, thereby completing the installation.

The utility model discloses install the drift tube on same alignment stick in advance, after the angle of the connecting rod of having adjusted the drift tube through the fixed plate, wholly pack into linear accelerator's cavity together, can prevent effectively that the drift tube from installing the collision that probably causes one by one and damaging to the installation effectiveness is high.

What has been described above is only the preferred embodiment of the present invention, not for limiting the scope of the present invention, but various changes can be made to the above-mentioned embodiment of the present invention. All the simple and equivalent changes and modifications made according to the claims and the content of the specification of the present invention fall within the scope of the claims of the present invention. The present invention is not described in detail in the conventional technical contents.

Claims

1. An auxiliary device for installing a drift tube of a linear accelerator is characterized by comprising an alignment rod, a hoop and a fixing plate, wherein the alignment rod is used for penetrating through center holes of a plurality of drift tubes; the hoop comprises a first main part and a second main part, wherein a first end and a second end of the first main part and a first end and a second end of the second main part are both provided with connecting holes, and the middle parts of the first main part and the second main part are both provided with semicircular grooves; the first end of the first main component and the first end of the second main component are both hinged to a first connecting piece, and the second end of the first main component and the second end of the second main component are detachably connected through a second connecting piece, so that the opening state and the closing state of the clamp can be switched.

2. The linear accelerator drift tube mounting aid of claim 1, wherein the semicircular grooves are semicircular in cross section perpendicular to a first direction and have the same size, and a rotating shaft of the first end of the first main member hinged to the first connecting piece and a rotating shaft of the first end of the second main member hinged to the first connecting piece are perpendicular to the first direction.

3. The linear accelerator drift tube mounting aid of claim 1, wherein the first connector has first through holes at two ends thereof, and the first through holes correspond to the first end connection holes of the first main member and the second end connection holes of the second main member, respectively.

4. The linear accelerator drift tube mounting aid of claim 3, wherein a first cylindrical fastener is inserted through the attachment hole in the first end of the first main member and one of the first through holes in the first connector, and a second cylindrical fastener is inserted through the attachment hole in the first end of the second main member and the other of the first through holes in the first connector to connect the first end of the first main member to the first end of the second main member.

5. The linear accelerator drift tube mounting aid of claim 1, wherein the second connector comprises a threaded rod and a rotating member sleeved on the threaded rod.

6. The linac drift tube installation aid of claim 5, wherein the intermediate portion of the rotary member has an internal thread matching the thread on the threaded rod.

7. The linear accelerator drift tube mounting aid of claim 5, wherein one end of the threaded rod is provided with a second through hole corresponding to the connection hole of the second end of the second main member; a third cylindrical fixing member passes through the second through hole and the connecting hole on the second end of the second main part to connect the threaded rod with the second main part.

8. The linac drift tube installation aid of claim 1, wherein when the clamp is in the open position, the second end of the first main part is spaced away from the second end of the second main part to form an opening such that the alignment bar can enter the recess at a position corresponding to the opening.

9. The linear accelerator drift tube mounting aid of claim 5, wherein when said clamp is in a closed position, said first and second main members are opposed such that said notches are aligned to form a central aperture of said clamp, said alignment bar is received in said central aperture, and said rotating member is in engagement with said first main member.

10. The linear accelerator drift tube mounting aid of claim 9, wherein said central bore has rubber disposed therein, a portion of said rubber being embedded in said collar and another portion protruding from said collar.