A fixing device for an electron linear accelerator

Abstract

The invention discloses a fixing device for an electron linear accelerator, and specifically relates to the technical field of fixing devices, comprising a T-shaped bracket, wherein two symmetrically distributed T-shaped brackets are provided, a gripping mechanism is provided between the two T-shaped brackets, a plurality of positioning mechanisms are provided in the gripping mechanism, and an electron linear accelerator body is provided in the plurality of positioning mechanisms; the gripping mechanism comprises two symmetrically distributed first frames, the top ends of the first frames are each provided with a second frame, and a flip shaft rod is fixedly installed at the bottom of the second frame. The invention, by providing the gripping mechanism and using the plurality of positioning mechanisms in combination, facilitates directly placing the electron linear accelerator body placed horizontally between two positioning outer frames in the plurality of positioning mechanisms through external hoisting equipment for positioning, and does not require external auxiliary equipment to flip the horizontal electron linear accelerator body and then fix it, thereby realizing rapid fixation of the electron linear accelerator body.

Description

Technical Field

[0001] The invention relates to the technical field of fixing devices, in particular to a fixing device for an electron linear accelerator. Background Art

[0002] An electron linear accelerator is an accelerator device used to accelerate electron particles to very high energies. Its core components mainly include: electron source, acceleration cavity, focusing system and vacuum system. It is mainly used in high-energy physics research, medical radiotherapy, materials science and industrial applications.

[0003] When an electron linear accelerator is in use, it needs to be installed and fixed. Traditional fixing devices are mostly longitudinally fixed or transversely fixed, and a fixed frame with a fixed size is used to fix the electron linear accelerator. Among them, when the electron linear accelerator is fixed longitudinally, external auxiliary equipment is required to flip the transverse electron linear accelerator, which is troublesome. When the placement direction needs to be changed for transverse placement later, another new set of fixing devices needs to be replaced, and the use effect is not ideal. For this reason, we propose a fixing device for an electron linear accelerator to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a fixing device for an electron linear accelerator to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a fixing device for an electron linear accelerator, comprising a T-shaped bracket, wherein the T-shaped bracket is provided with two symmetrically distributed ones, a gripping mechanism is provided between the two T-shaped brackets, a plurality of positioning mechanisms are provided in the gripping mechanism, and an electron linear accelerator body is provided in the plurality of positioning mechanisms;

[0006] The grasping mechanism includes two symmetrically distributed first frames, the top of each of the first frames is provided with a second frame, the bottom of the second frame is fixedly installed with a flip shaft rod, the flip shaft rod is rotatably installed on the top of two T-shaped brackets, two first grasping members are fixedly installed at the end of the second frame, two second grasping members are fixedly installed at the end of the first frame, a connecting frame is fixedly installed between the two first grasping members and between the two second grasping members, and a fixing block is fixedly installed on the inner side of the connecting frame.

[0007] Preferably, the first grabbing member includes a first grabbing frame and a second grabbing frame, the first grabbing frame and the second grabbing frame are both in a semicircular ring structure, a rotating column is fixedly installed on one end of the second grabbing frame close to the first grabbing frame, the rotating column is rotatably clamped on one end of the first grabbing frame close to the second grabbing frame, the opposite ends of the first grabbing frame and the second grabbing frame are both fixedly installed with mounting seats, a mounting bolt is threadedly installed between the two mounting seats, the first grabbing member is fixedly installed on the end of the second frame through the first grabbing frame, and the connecting frame is respectively fixedly installed between the first grabbing frames of the two first grabbing members and between the second grabbing frames of the two first grabbing members.

[0008] Preferably, the structure of the second gripping member is the same as that of the first gripping member, the second gripping member is fixedly mounted on the end of the first frame through the first gripping frame, and the connecting frame is fixedly mounted between the first gripping frames of the two second gripping members and between the second gripping frames of the two second gripping members.

[0009] Preferably, a first clamping column is fixedly installed on the top of the first frame, and a first clamping groove corresponding to the first clamping column is opened at the bottom of the second frame. The first clamping column is movably clamped in the corresponding first clamping groove, and two symmetrically distributed groups of second clamping columns and two symmetrically distributed lifting screws are provided between the first grabbing piece and the second grabbing piece at adjacent positions. Each group of the second clamping columns is respectively fixedly installed on the first grabbing frame and the second grabbing frame in the corresponding second grabbing piece, and the lifting screws are respectively rotatably installed on the first grabbing frame and the second grabbing frame in the corresponding second grabbing piece. The tops of the second clamping columns respectively and movably penetrate the first grabbing frame and the second grabbing frame in the first grabbing piece, and the lifting screws respectively and threadably penetrate the first grabbing frame and the second grabbing frame in the first grabbing piece.

[0010] Preferably, a longitudinal sliding rod is fixedly installed on the rotating column in the second grasping member, and the longitudinal sliding rod movably passes through the rotating column in the first grasping member, and a second worm gear is fixedly installed on the top of the rotating column in the first grasping member at the top position, and a second worm is meshingly connected to the outer side of the second worm gear, and the second worm is rotatably installed on the top of the first grasping frame in the first grasping member, and a second motor is fixedly installed on the side of the top of the first grasping frame in the first grasping member close to the second worm, and the driving end of the second motor and one end of the second worm are fixedly installed.

[0011] Preferably, a limiting screw is movably inserted in the middle of the T-shaped bracket, and limiting nuts are threadedly installed on both ends of the limiting screw. A long groove corresponding to the limiting screw is opened on the first frame, and the limiting nut movably passes through the long groove.

[0012] Preferably, an auxiliary cross frame is vertically mounted on the top end of the T-shaped bracket, and an auxiliary through groove for use with a limiting screw is formed at one end of the auxiliary cross frame away from the T-shaped bracket.

[0013] Preferably, the positioning mechanism includes two symmetrically distributed positioning outer frames, the positioning outer frames are fixedly mounted on corresponding fixed blocks, the positioning outer frames are all semicircular ring frame structures, the inner sides of the positioning outer frames are provided with symmetrically distributed rotating grooves, the rotating grooves are movably provided with positioning protrusions, the opposite ends of a plurality of the positioning protrusions extend to the inner sides of the two positioning outer frames, the opposite ends of a plurality of the positioning protrusions are fixedly mounted with positioning blocks, the outer fixed sleeves of the positioning blocks are provided with anti-slip pads, the middle part of the positioning protrusions is fixedly mounted with a rotating shaft, the rotating shaft is rotatably mounted in the positioning outer frame, a transverse groove is provided on the side of the positioning protrusion away from the positioning block, a driving shaft column is slidably provided in the transverse groove, an arc frame is fixedly mounted on the top of the two driving shaft columns in the positioning outer frame, and the arc frame is slidably connected to the positioning outer frame.

[0014] Preferably, an arc-shaped worm wheel is fixedly mounted on the outer side of the arc-shaped frame, and a third worm is meshedly connected on the outer side of the arc-shaped worm wheel. The third worm is rotatably mounted on the positioning outer frame, and the electron linear accelerator body is movably clamped between multiple positioning protrusions in multiple positioning mechanisms.

[0015] Preferably, a first worm wheel is fixedly installed at one end of the flip shaft, a first worm is meshingly connected to the outer side of the first worm wheel, the first worm is rotatably installed on the top of the T-shaped bracket, a first motor is fixedly installed on the side of the outer wall of the T-shaped bracket close to the first worm, and the driving end of the first motor and the bottom end of the first worm are fixedly installed.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. By setting a gripping mechanism and using multiple positioning mechanisms in combination, it is convenient to place the horizontally placed electron linear accelerator body directly between two positioning outer frames of the multiple positioning mechanisms through external lifting equipment for positioning, without the need to use external auxiliary equipment to flip the horizontal electron linear accelerator body and then fix it, thereby realizing rapid fixation of the electron linear accelerator body.

[0018] 2. By setting the gripping mechanism, the electron linear accelerator body can be flexibly rotated, and the installation method of the electron linear accelerator body can be changed without replacing another set of new fixing devices, thereby improving the use effect.

[0019] 3. By setting a limit screw and using an auxiliary cross frame, the first frame is limited, thereby limiting the entire grasping mechanism and increasing the stability of the electron linear accelerator body fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the structural connection after the present invention is split.

[0023] Figure 3 It is a schematic diagram of the structural connection of the gripping mechanism, the positioning mechanism and the electron linear accelerator body in the present invention.

[0024] Figure 4 It is a schematic diagram of the structural connection of the gripping mechanism in the present invention.

[0025] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle.

[0026] Figure 6 It is a schematic structural diagram of the first gripping member in the present invention.

[0027] Figure 7 It is a structural schematic diagram of the positioning mechanism in the present invention.

[0028] Figure 8 It is a structural schematic diagram of another state of the present invention.

[0029] In the figure: 1, T-shaped bracket; 2, gripping mechanism; 3, positioning mechanism; 4, electronic linear accelerator body; 5, limiting screw; 51, limiting nut; 6, auxiliary cross frame; 601, auxiliary through slot; 21, first frame; 201, long slot; 211, first clamping column; 212, first clamping slot; 22, second frame; 23, flip shaft; 231, first worm gear; 232, first worm; 233, first motor; 24, first gripping member; 241, first gripping frame; 242, second gripping frame; 243, rotating column; 2 44. Mounting seat; 245. Mounting bolt; 25. Second gripping piece; 26. Connecting frame; 261. Fixing block; 27. Second clamping column; 271. Lifting screw; 28. Longitudinal slide bar; 29. ​​Second worm gear; 291. Second worm; 292. Second motor; 31. Positioning frame; 301. Rotating slot; 32. Positioning cam; 321. Rotating shaft; 322. Transverse slot; 33. Positioning block; 331. Anti-skid pad; 34. Driving shaft column; 35. Arc frame; 36. Arc worm gear; 361. Third worm. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example: Figure 1-8 As shown, the present invention provides a fixing device for an electron linear accelerator, comprising a T-shaped bracket 1, wherein the T-shaped bracket 1 is provided with two symmetrically distributed ones, a gripping mechanism 2 is provided between the two T-shaped brackets 1, a plurality of positioning mechanisms 3 are provided in the gripping mechanism 2, and an electron linear accelerator body 4 is provided in the plurality of positioning mechanisms 3;

[0032] The gripping mechanism 2 includes two symmetrically distributed first frames 21, the top of each of the first frames 21 is provided with a second frame 22, the bottom of the second frame 22 is fixedly installed with a flip shaft 23, the flip shaft 23 is rotatably installed on the top of the two T-shaped brackets 1, two first gripping members 24 are fixedly installed at the end of the second frame 22, two second gripping members 25 are fixedly installed at the end of the first frame 21, a connecting frame 26 is fixedly installed between the two first gripping members 24 and between the two second gripping members 25, and a fixing block 261 is fixedly installed on the inner side of the connecting frame 26; a first worm gear 231 is fixedly installed at one end of the flip shaft 23, and the outer side of the first worm gear 231 is meshed with the first worm gear 231. A first worm 232 is connected, and the first worm 232 is rotatably installed on the top of the T-shaped bracket 1. A first motor 233 is fixedly installed on one side of the outer wall of the T-shaped bracket 1 close to the first worm 232. The driving end of the first motor 233 and the bottom end of the first worm 232 are fixedly installed. The first motor 233 is controlled to start and drive the first worm 232 to rotate and drive the first worm wheel 231 to rotate, thereby controlling the flip shaft 23 to drive the first frame 21 and the second frame 22 to rotate, and then the first gripping member 24, the second gripping member 25 and multiple positioning mechanisms 3 can be controlled to rotate, and it is convenient to drive the electron linear accelerator body 4 to rotate, and the installation method of the electron linear accelerator body 4 can be flexibly changed.

[0033] The first grabbing member 24 includes a first grabbing frame 241 and a second grabbing frame 242. The first grabbing frame 241 and the second grabbing frame 242 are both semicircular ring structures. A rotating column 243 is fixedly installed at one end of the second grabbing frame 242 close to the first grabbing frame 241. The rotating column 243 is rotatably clamped at one end of the first grabbing frame 241 close to the second grabbing frame 242, so that the second grabbing frame 242 can rotate at one end of the first grabbing frame 241. The opposite ends of the first grabbing frame 241 and the second grabbing frame 242 are fixedly installed with mounting seats 244. A mounting bolt 245 is threadedly installed between the two mounting seats 244 to fix the first grabbing frame 241 and the second grabbing frame 242. The first grabbing member 24 is fixedly installed at the end of the second frame 22 through the first grabbing frame 241. The connecting frame 26 is fixedly installed between the first grabbing frames 241 of the two first grabbing members 24 and between the second grabbing frames 242 of the two first grabbing members 24 respectively.

[0034] The structure of the second gripping member 25 is the same as that of the first gripping member 24. The second gripping member 25 is fixedly mounted on the end of the first frame 21 through the first gripping frame 241. The connecting frame 26 is fixedly mounted between the first gripping frames 241 of the two second gripping members 25 and between the second gripping frames 242 of the two second gripping members 25.

[0035] A first clamping column 211 is fixedly installed on the top of the first frame 21, and a first clamping groove 212 corresponding to the first clamping column 211 is opened at the bottom of the second frame 22. The first clamping column 211 is movably clamped in the corresponding first clamping groove 212, so that the first frame 21 can slide and rise and fall at the bottom of the second frame 22, and the distance between the first gripping piece 24 and the second gripping piece 25 can be adjusted. After the electron linear accelerator body 4 is installed and fixed, the upper and lower parts of the electron linear accelerator body 4 can be directly separated and repaired by adjusting the distance between the first gripping piece 24 and the second gripping piece 25, thereby improving the use effect of the entire fixed installation. Two groups of second clamping columns 27 and two lifting screws 271 symmetrically distributed are arranged between the first gripping piece 24 and the second gripping piece 25 at adjacent positions, each The second clamping column 27 of the group is respectively fixedly mounted on the first grabbing frame 241 and the second grabbing frame 242 of the corresponding second grabbing member 25, and the lifting screw 271 is respectively rotatably mounted on the first grabbing frame 241 and the second grabbing frame 242 of the corresponding second grabbing member 25. The top of the second clamping column 27 corresponds to and moves through the first grabbing frame 241 and the second grabbing frame 242 of the first grabbing member 24, and the lifting screw 271 corresponds to and threads through the first grabbing frame 241 and the second grabbing frame 242 of the first grabbing member 24. When in use, the lifting screws 271 on both sides are manually rotated synchronously using an external tool, and under the guided sliding action of the first clamping column 211 and the second clamping column 27, the first frame 21 is driven to slide and rise and fall at the bottom end of the second frame 22 to adjust the distance between the first grabbing member 24 and the second grabbing member 25.

[0036] The rotating column 243 in the second gripping member 25 is fixedly installed with a longitudinal slide bar 28, and the longitudinal slide bar 28 movably passes through the rotating column 243 in the first gripping member 24 to perform a sliding connection between the first gripping member 24 and the rotating column 243 in the second gripping member 25. A second worm gear 29 is fixedly installed on the top of the rotating column 243 in the first gripping member 24, and a second worm 291 is meshingly connected to the outer side of the second worm gear 29. The second worm 291 is rotatably installed on the top of the first gripping frame 241 in the first gripping member 24. A second motor 292 is fixedly installed on one side of the top of the frame 241 close to the second worm gear 291, and the driving end of the second motor 292 is fixedly installed on one end of the second worm gear 291. When in use, the second motor 292 is controlled to start driving the second worm gear 291 to drive the rotating column 243 in the first grabbing piece 24 to rotate, and cooperates with the connection of the longitudinal sliding rod 28 to synchronously drive the rotating column 243 in the first grabbing piece 24 and the second grabbing piece 25 to rotate, thereby driving the second grabbing frame 242 in the first grabbing piece 24 and the second grabbing piece 25 to rotate at one end of the first grabbing frame 241.

[0037] A limiting screw 5 is movably inserted in the middle of the T-shaped bracket 1, and limiting nuts 51 are threadedly installed on both ends of the limiting screw 5. A long groove 201 corresponding to the limiting screw 5 is opened on the first frame 21, and the limiting nut 51 movably passes through the long groove 201. By setting the limiting screw 5, the limiting nut 51 movably passes through the long groove 201, and the limiting screw 5 limits the first frame 21, thereby limiting the entire grasping mechanism 2.

[0038] An auxiliary cross frame 6 is vertically installed at the top of the T-shaped bracket 1. An auxiliary through groove 601 used in conjunction with the limiting screw 5 is opened at one end of the auxiliary cross frame 6 away from the T-shaped bracket 1. By setting the auxiliary cross frame 6, when the electron linear accelerator body 4 is installed and fixed horizontally, the entire grasping mechanism 2 is rotated, the grasping mechanism 2 is in a horizontal state, and the electron linear accelerator body 4 is installed horizontally. At this time, the auxiliary through groove 601 corresponds to the long groove 201. At this time, the limiting screw 5 is movable through the auxiliary through groove 601 and the long groove 201 to limit the grasping mechanism 2 in the horizontal state, so that the electron linear accelerator body 4 is installed with a horizontal limit.

[0039] The positioning mechanism 3 includes two symmetrically distributed positioning outer frames 31, and the positioning outer frames 31 are fixedly installed on the corresponding fixed blocks 261. The positioning outer frames 31 are all semi-circular ring frame structures, and the inner sides of the positioning outer frames 31 are all provided with symmetrically distributed rotating grooves 301, and the rotating grooves 301 are all movably provided with positioning protrusions 32. The opposite ends of the plurality of positioning protrusions 32 extend to the inner sides of the two positioning outer frames 31, and the opposite ends of the plurality of positioning protrusions 32 are all fixedly installed with positioning blocks 33. The outer fixed sleeve of the positioning block 33 is provided with an anti-slip pad 331. A rotating shaft 321 is fixedly installed in the middle of the frame 32, and the rotating shaft 321 is rotatably installed in the positioning outer frame 31. A transverse groove 322 is opened on the side of the positioning protrusion 32 away from the positioning block 33, and a driving shaft column 34 is slidably clamped in the transverse groove 322. An arc frame 35 is fixedly installed on the top of the two driving shaft columns 34 in the positioning outer frame 31, and the arc frame 35 is slidably clamped in the positioning outer frame 31; an arc worm wheel 36 is fixedly installed on the outer side of the arc frame 35, and the outer side of the arc worm wheel 36 is meshed and connected with a third worm 361, and the third worm 361 rotates The electronic linear accelerator body 4 is mounted on the positioning outer frame 31, and is movably connected between the multiple positioning protrusions 32 in the multiple positioning mechanisms 3. When the second gripping frame 242 in the first gripping member 24 and the second gripping member 25 is rotated and opened at one end of the first gripping frame 241, the two positioning outer frames 31 in the multiple positioning mechanisms 3 are driven to rotate and open, so that the two positioning outer frames 31 in the multiple positioning mechanisms 3 are convenient for grabbing from the outside of the horizontally placed electronic linear accelerator body 4, and it is convenient for the subsequent fixing of the horizontally placed electronic linear accelerator body 4, and there is no need to use external auxiliary equipment to move the horizontal electronic linear accelerator body 4 is flipped and fixed. After grabbing, two positioning outer frames 31 in the multiple positioning mechanisms 3 are controlled to rotate in opposite directions and close to form a closed frame to position the electron linear accelerator body 4. Subsequently, the third worm 361 is manually rotated using a tool to drive the corresponding arc worm wheel 36 to drive the arc frame 35 to rotate, and the driving shaft column 34 slides in the transverse groove 322 to control the multiple positioning protrusions 32 to rotate until the multiple anti-slip pads 331 contact the outer wall of the electron linear accelerator body 4, so as to fix the electron linear accelerator body 4, thereby realizing the rapid fixation of the electron linear accelerator body 4.

[0040] Working principle: When in use, the first motor 233 is controlled to start driving the first worm 232 to rotate and drive the first worm wheel 231 to rotate, thereby controlling the flip shaft 23 to drive the first frame 21 and the second frame 22 to rotate, and then the first gripping member 24, the second gripping member 25 and the plurality of positioning mechanisms 3 can be controlled to rotate, and the gripping mechanism 2 is rotated to a horizontal state;

[0041] Subsequently, the second motor 292 is controlled to start driving the second worm 291 to drive the rotating column 243 in the first grabbing member 24 to rotate, and the rotating column 243 in the first grabbing member 24 and the second grabbing member 25 is synchronously driven to rotate, thereby driving the second grabbing frame 242 in the first grabbing member 24 and the second grabbing member 25 to rotate and open at one end of the first grabbing frame 241, and driving the two positioning outer frames 31 in the multiple positioning mechanisms 3 to rotate and open;

[0042] Therefore, the horizontally placed electron linear accelerator body 4 can be directly placed between the two positioning outer frames 31 in the multiple positioning mechanisms 3 through external lifting equipment, without the need to use external auxiliary equipment to flip the horizontal electron linear accelerator body 4 and then fix it. Subsequently, the second motor 292 is controlled to start driving the second worm 291 to drive the rotating column 243 in the first grabbing member 24 to rotate in the opposite direction, and the connection of the longitudinal sliding rod 28 is coordinated to synchronously drive the rotating column 243 in the first grabbing member 24 and the second grabbing member 25 to rotate in the opposite direction, thereby driving the second grabbing frame 242 in the first grabbing member 24 and the second grabbing member 25 to rotate and close at one end of the first grabbing frame 241, and driving the two positioning outer frames 31 in the multiple positioning mechanisms 3 to rotate and close, so as to form a closed frame to position the electron linear accelerator body 4;

[0043] Subsequently, the third worm 361 is manually rotated using a tool to drive the corresponding arc-shaped worm wheel 36 to drive the arc-shaped frame 35 to rotate, and the driving shaft column 34 slides in the transverse groove 322 to control the multiple positioning protrusions 32 to rotate until the multiple anti-slip pads 331 contact the outer wall of the electron linear accelerator body 4, thereby fixing the electron linear accelerator body 4, thereby realizing the rapid fixation of the electron linear accelerator body 4;

[0044] After the fixation is completed, the first motor 233 is controlled to start and drive the first worm 232 to rotate in the opposite direction, driving the first worm wheel 231 to rotate in the opposite direction, thereby controlling the flip shaft 23 to drive the first frame 21 and the second frame 22 to rotate in the opposite direction, and then the first gripping member 24, the second gripping member 25 and the plurality of positioning mechanisms 3 can be controlled to rotate in the opposite direction, and the gripping mechanism 2 is rotated to a vertical state, thereby rotating the electron linear accelerator body 4 to a vertical state for vertical fixation, and by using the limiting screw 5 to limit the first frame 21, the entire gripping mechanism 2 is limited, and then the electron linear accelerator body 4 is limited and fixed;

[0045] When it is necessary to install and fix it horizontally later, it is only necessary to rotate the entire grasping mechanism 2, the grasping mechanism 2 is in a horizontal state, and the electron linear accelerator body 4 is installed horizontally. At this time, the auxiliary through groove 601 and the long groove 201 correspond to each other. At this time, the limiting screw 5 is movable through the auxiliary through groove 601 and the long groove 201 to limit the grasping mechanism 2 in the horizontal state, so that the electron linear accelerator body 4 is installed with horizontal limit.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixing device for an electron linear accelerator, comprising a T-shaped bracket (1), characterized in that: The T-shaped brackets (1) are provided with two symmetrically distributed ones, a gripping mechanism (2) is provided between the two T-shaped brackets (1), a plurality of positioning mechanisms (3) are provided in the gripping mechanism (2), and an electron linear accelerator body (4) is provided in the plurality of positioning mechanisms (3); The gripping mechanism (2) comprises two symmetrically distributed first frames (21), the top of each of the first frames (21) being provided with a second frame (22), the bottom of each of the second frames (22) being fixedly mounted with a flip shaft (23), the flip shaft (23) being rotatably mounted on the tops of the two T-shaped brackets (1), two first gripping members (24) being fixedly mounted on the ends of the second frames (22), two second gripping members (25) being fixedly mounted on the ends of the first frames (21), a connecting frame (26) being fixedly mounted between the two first gripping members (24) and between the two second gripping members (25), and a fixing block (261) being fixedly mounted on the inner side of the connecting frame (26); The first grabbing member (24) comprises a first grabbing frame (241) and a second grabbing frame (242), the first grabbing frame (241) and the second grabbing frame (242) both being semicircular ring structures, a rotating column (243) being fixedly mounted on one end of the second grabbing frame (242) close to the first grabbing frame (241), the rotating column (243) being rotatably clamped on one end of the first grabbing frame (241) close to the second grabbing frame (242), mounting seats (244) being fixedly mounted on opposite ends of the first grabbing frame (241) and the second grabbing frame (242), a mounting bolt (245) being threadedly mounted between the two mounting seats (244), the first grabbing member (24) being fixedly mounted on the end of the second frame (22) through the first grabbing frame (241), and the connecting frame (26) being fixedly mounted between the first grabbing frames (241) of the two first grabbing members (24) and between the second grabbing frames (242) of the two first grabbing members (24), respectively; A limiting screw (5) is movably inserted in the middle of the T-shaped bracket (1), and limiting nuts (51) are threadedly mounted on both ends of the limiting screw (5); a long groove (201) corresponding to the limiting screw (5) is opened on the first bracket (21), and the limiting nut (51) movably passes through the long groove (201); An auxiliary cross frame (6) is vertically mounted on the top end of the T-shaped bracket (1), and an auxiliary through slot (601) for use with the limiting screw (5) is formed at one end of the auxiliary cross frame (6) away from the T-shaped bracket (1).

2. The fixing device of an electron linear accelerator according to claim 1, characterized in that: The structure of the second grabbing member (25) is the same as that of the first grabbing member (24); the second grabbing member (25) is fixedly mounted on the end of the first frame (21) via a first grabbing frame (241); and the connecting frame (26) is fixedly mounted between the first grabbing frames (241) of the two second grabbing members (25) and between the second grabbing frames (242) of the two second grabbing members (25).

3. The fixing device of an electron linear accelerator according to claim 2, characterized in that: A first clamping column (211) is fixedly mounted on the top of the first frame (21), a first clamping slot (212) corresponding to the first clamping column (211) is provided at the bottom of the second frame (22), the first clamping column (211) is movably clamped in the corresponding first clamping slot (212), two groups of symmetrically distributed second clamping columns (27) and two symmetrically distributed lifting screws (271) are provided between the first grabbing member (24) and the second grabbing member (25) at adjacent positions, each group of the second clamping columns (27) is fixedly mounted on the corresponding second The lifting screw rod (271) is rotatably mounted on the first grabbing frame (241) and the second grabbing frame (242) in the grabbing member (25), respectively; the top of the second clamping column (27) is correspondingly movable through the first grabbing frame (241) and the second grabbing frame (242) in the first grabbing member (24), respectively; and the lifting screw rod (271) is correspondingly threadedly penetrated through the first grabbing frame (241) and the second grabbing frame (242) in the first grabbing member (24).

4. The fixing device for an electron linear accelerator according to claim 2, characterized in that: A longitudinal slide bar (28) is fixedly mounted on the rotating column (243) in the second gripping member (25), and the longitudinal slide bar (28) movably passes through the rotating column (243) in the first gripping member (24). A second worm gear (29) is fixedly mounted on the top of the rotating column (243) in the first gripping member (24) at the top position. The outer side of the second worm gear (29) is meshingly connected with a second worm (291). The second worm (291) is rotatably mounted on the top of the first gripping frame (241) in the first gripping member (24). A second motor (292) is fixedly mounted on one side of the top of the first gripping frame (241) in the first gripping member (24) close to the second worm (291). The driving end of the second motor (292) and one end of the second worm (291) are fixedly mounted.

5. The fixing device for an electron linear accelerator according to claim 1, characterized in that: The positioning mechanism (3) comprises two symmetrically distributed positioning outer frames (31), the positioning outer frames (31) being fixedly mounted on corresponding fixed blocks (261), the positioning outer frames (31) each presenting a semicircular ring frame structure, the inner sides of the positioning outer frames (31) each having symmetrically distributed rotating grooves (301), the rotating grooves (301) each having positioning convex frames (32) movably mounted therein, the opposite ends of the plurality of positioning convex frames (32) each extending to the inner sides of the two positioning outer frames (31), the opposite ends of the plurality of positioning convex frames (32) each having a positioning block (33) fixedly mounted thereon, The outer fixed sleeve of the positioning block (33) is provided with an anti-slip pad (331); a rotating shaft (321) is fixedly installed in the middle of the positioning convex frame (32); the rotating shaft (321) is rotatably installed in the positioning outer frame (31); a transverse groove (322) is provided on a side of the positioning convex frame (32) away from the positioning block (33); a driving shaft column (34) is slidably clamped in the transverse groove (322); an arc frame (35) is fixedly installed on the top of two driving shaft columns (34) in the positioning outer frame (31); the arc frame (35) is slidably clamped in the positioning outer frame (31).

6. The fixing device for an electron linear accelerator according to claim 5, characterized in that: An arc-shaped worm wheel (36) is fixedly mounted on the outer side of the arc-shaped frame (35), and a third worm (361) is meshedly connected to the outer side of the arc-shaped worm wheel (36). The third worm (361) is rotatably mounted on the positioning outer frame (31), and the electron linear accelerator body (4) is movably clamped between a plurality of positioning protrusions (32) in a plurality of positioning mechanisms (3).

7. The fixing device for an electron linear accelerator according to claim 1, characterized in that: A first worm wheel (231) is fixedly mounted on one end of the tilting shaft (23); a first worm gear (232) is meshingly connected to the outer side of the first worm wheel (231); the first worm gear (232) is rotatably mounted on the top of the T-shaped bracket (1); a first motor (233) is fixedly mounted on a side of the outer wall of the T-shaped bracket (1) close to the first worm gear (232); and a driving end of the first motor (233) and a bottom end of the first worm gear (232) are fixedly mounted.

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