CN212947434U - Auxiliary device convenient to drift tube dismouting is used - Google Patents
Auxiliary device convenient to drift tube dismouting is used Download PDFInfo
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- CN212947434U CN212947434U CN202021655037.5U CN202021655037U CN212947434U CN 212947434 U CN212947434 U CN 212947434U CN 202021655037 U CN202021655037 U CN 202021655037U CN 212947434 U CN212947434 U CN 212947434U
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- connecting screw
- adjusting nut
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Abstract
The utility model discloses an auxiliary device convenient for dismounting a drift tube, wherein the bottom of a supporting plate component is connected with a flange plate through a connecting screw rod, the lower end of the connecting screw rod is connected with an adjusting nut through screw threads after passing through the flange plate, and a pressing plate is arranged at the joint of the adjusting nut and the flange plate; and a bearing groove is formed at the upper part of the supporting plate component and is supported at the bottom of the drift tube, and the periphery of the flange plate is arranged on the wall of the cavity of the linear accelerator. When in use, the adjusting nut is embedded in the pressing plate in advance; the upper end of the connecting screw rod is connected with the supporting plate assembly, and the lower end of the connecting screw rod penetrates through the flange plate and then is connected with the adjusting nut; rotating the adjusting nut to be connected with the flange plate, penetrating the pressing plate by using a bolt and screwing the bolt into the flange plate, but not screwing the bolt; and fixedly mounting the flange plate on the cavity wall of the linear accelerator. The utility model discloses replace traditional artifical hand support action, stability when improving the installation of drift tube or dismantling avoids causing interference or damage to adjacent drift tube or cavity inner wall, also can effectively reduce artifical intensity of labour simultaneously.
Description
Technical Field
The utility model relates to a linear accelerator technical field, in particular to auxiliary device convenient to drift tube dismouting is used.
Background
In a chinese spallation neutron source, a drift tube linear accelerator (DTL) is generally provided with a large number of drift tubes, up to 153 drift tubes. The surface precision and the installation precision of the drift tube have extremely high requirements (the surface roughness generally requires Ra 0.8um), the errors in three orthogonal directions (namely the three directions of an X axis, a Y axis and a Z axis) are required to be kept within +/-0.05 mm during installation, the minimum distance between two drift tubes is about 19mm, the mass of each drift tube is gradually increased from a low-energy end to a high-energy end, the weight of the No. 1 drift tube is about 7.5kg, and the weight of the No. 153 drift tube is the heaviest and is about 28 kg.
In the actual operation process of the linear accelerator, the drift tube needs to be replaced in time due to vacuum leakage caused by bombardment of a welding seam by lost beams. The current common solution is to disassemble the drift tube to be replaced from the cavity of the linear accelerator by manual operation and then replace the drift tube with a new drift tube. The operation mode is simple and direct, but in the operation process, the drift tubes are supported by hands manually, so that the phenomenon that the drift tubes collide with the inner walls of adjacent drift tubes or cavities of the linear accelerator is easy to occur, and the surface precision and the installation precision of each drift tube are influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide an auxiliary device convenient to drift tube dismouting is used, this auxiliary device can replace artifical hand support, improves the stability when drift tube installation or dismantlement, also can effectively avoid causing interference or damage to adjacent drift tube or cavity inner wall.
The technical scheme of the utility model is that: an auxiliary device convenient for dismounting a drift tube comprises a supporting plate component, a connecting screw rod, a flange plate, a pressing plate and an adjusting nut, wherein the bottom of the supporting plate component is connected with the flange plate through the connecting screw rod; the upper portion of layer board subassembly forms the bearing groove, and the bearing groove bearing is in drift tube bottom, and the periphery of ring flange is installed in linear accelerator's cavity bottom through-hole. The support plate assembly is used for supporting the drift tube so as to be convenient for dismounting or mounting the drift tube; the flange plate is mainly used for installing and fixing the whole auxiliary device on the cavity wall of the linear accelerator, and plays a role similar to that of a base, and generally, the flange plate is fixedly connected with the cavity wall of the linear accelerator through bolts, so that the whole auxiliary device can be conveniently assembled, disassembled and used; the height of the supporting plate assembly can be adjusted in real time by utilizing the threaded connection of the connecting screw rod and the adjusting nut, so that the supporting plate assembly is adaptive to the position of the drift tube; the pressure plate is mainly used for fixing or loosening the adjusting nut, so that the connecting screw rod and the supporting plate assembly are in a fixed stable state or an adjustable state of moving up and down.
The supporting plate assembly comprises a base plate, a first side plate and a second side plate, and the first side plate and the second side plate are oppositely arranged on two sides of the base plate; the bottom of the base plate is welded with the connecting screw rod, so that the supporting plate component and the connecting screw rod form an integrated structure. The supporting plate component with the structure can form a stable supporting state, and meanwhile, the whole base plate is of a flat structure, so that the base plate can be conveniently welded with the connecting screw rod. The first side plate, the second side plate and the base plate can be fixed through welding.
In the supporting plate assembly, the first side plate and the second side plate are respectively in an inclined and upward extending state, a trapezoidal concave space is formed among the base plate, the first side plate and the second side plate, and the bottom of the drift tube is located in the trapezoidal concave space. The trapezoidal depression space can stably wrap the lower part of the drift tube therein, so that the drift tube is prevented from sliding; meanwhile, due to the fact that the two sides of the drift tube are provided with the inclination degrees, the drift tube can adapt to drift tubes of different models.
The bottom of the base plate is provided with a groove, and the upper end of the connecting screw rod is welded and fixed with the base plate in the groove. The setting of this recess can effectively improve the steadiness between base plate and the connecting bolt, plays the positioning action simultaneously to stability when improving whole auxiliary device and using.
The outer wall of the connecting screw is provided with at least one key groove, and the key groove is arranged along the axis direction of the connecting screw.
The flange plate is provided with a screw mounting hole, the inner side of the screw mounting hole is provided with a flat key corresponding to the key groove, and the flat key is in clearance fit with the key groove. Wherein, the parallel key is fixed in ring flange screw rod mounting hole inboard through the mode of spot welding (promptly in the installation department of parallel key, the keyway has also been seted up at screw rod mounting hole inboard to the ring flange, and after the parallel key was packed into the keyway on the ring flange, it was fixed with ring flange spot welding), utilizes the cooperation of parallel key and keyway, can stabilize the connection between connecting screw and the ring flange on the one hand, and on the other hand also can play the guide effect to connecting screw's reciprocating to reach layer board subassembly and drift tube steady movement's purpose.
And the flange plate is also provided with an observation window. The observation window can be realized by installing transparent glass or organic glass on the flange plate, or the glass or the organic glass can not be installed. In the dismounting process or the mounting process of the drift tube, the moving condition of the drift tube in the cavity of the linear accelerator can be observed in real time through the observation window, so that the drift tube is ensured to move stably, and the adjacent drift tube or the inner wall of the cavity is prevented from being contacted or collided.
The axial cross section of the adjusting nut is T-shaped, a corresponding T-shaped hole is formed in the middle of the pressing plate, the adjusting nut is embedded in the T-shaped hole, and the pressing plate is connected with the flange plate through a bolt.
The use method of the auxiliary device convenient for dismounting the drift tube comprises the following steps:
(1) the adjusting nut is embedded in the pressing plate in advance;
(2) the upper end of the connecting screw rod is welded with the supporting plate assembly, and the lower end of the connecting screw rod penetrates through the flange plate and then is connected with the adjusting nut;
(3) rotating the adjusting nut to be connected with the bottom surface of the flange plate, connecting the pressing plate with the bottom surface of the flange plate, penetrating the pressing plate by using bolts and screwing the bolts into the flange plate, but not screwing the bolts;
(4) fixedly mounting a flange plate in a through hole at the bottom of a cavity of the linear accelerator in a bolt connection mode;
therefore, the connecting screw rod drives the supporting plate assembly to move up and down relative to the flange plate by rotating the adjusting nut, so that the height of the supporting plate assembly is adjusted, and the height of the supporting plate assembly is adapted to the drift tube.
In the use method, when the drift tube needs to be disassembled, the method comprises the following steps:
(A) rotating the adjusting nut until the supporting plate assembly rises to be contacted with the bottom of the drift tube;
(B) the bolt on the pressure plate is screwed down to fix the adjusting nut, so that the supporting plate assembly is ensured to be stable and immovable;
(C) detaching the drift tube from the linear accelerator;
(D) after the drift tube is disassembled, the bolt on the pressing plate is unscrewed, and the adjusting nut is rotated, so that the connecting screw rod drives the supporting plate assembly and the drift tube to slowly descend;
(E) when the supporting plate assembly and the drift tube are lowered to the lowest end, the flange plate is detached from the cavity wall of the linear accelerator, and the drift tube is taken out;
when the drift tube needs to be installed, the method comprises the following steps:
(a) the connecting screw rod drives the supporting plate assembly to descend to the lowest end, and after the drift tube is placed on the supporting plate assembly, the flange plate is installed in a through hole in the bottom of the cavity of the linear accelerator;
(b) rotating the adjusting nut to enable the connecting screw to drive the supporting plate assembly and the drift tube to slowly rise until the drift tube reaches the installation position;
(c) the bolt on the pressure plate is screwed down to fix the adjusting nut, so that the supporting plate assembly is ensured to be stable and immovable;
(d) and a drift tube is arranged on the linear accelerator.
After the drift tube is installed, if the auxiliary device needs to be removed according to actual needs, the flange plate can be directly detached from the cavity wall of the linear accelerator; or the bolt on the pressing plate can be firstly unscrewed, the adjusting nut is rotated, the screw rod drives the supporting plate component to descend, and then the flange plate is detached from the cavity wall of the linear accelerator.
In the using method, the moving condition of the drift tube in the cavity of the linear accelerator can be observed in real time through the observation window on the flange plate in the detaching process or the installing process of the drift tube, so that the stable movement of the drift tube is ensured, and the contact or the collision with the adjacent drift tube or the inner wall of the cavity is avoided.
In addition, if the drift tube does not need to be replaced, the through hole at the bottom of the cavity is used as a vacuum pump hole or a fixed tuner hole for vacuumizing. When the drift tube needs to be replaced, the auxiliary device is assembled and disassembled by the two holes, and after the drift tube is assembled and disassembled, the through hole at the bottom of the cavity of the linear accelerator is restored to be connected with the vacuum pump or the tuner. Therefore, when a certain drift tube is replaced, no matter in the detaching process or the installing process of the drift tube, the drift tube can be directly supported by other tools or hands through the through holes at the bottom of the adjacent cavity, the stability of the detaching process of the drift tube is further improved, and the drift tube is better prevented from contacting or colliding with the adjacent drift tube or the inner wall of the cavity.
Compared with the prior art, the utility model, following beneficial effect has:
the auxiliary device is arranged on the wall of the cavity of the linear accelerator, so that the traditional manual hand-held supporting action is replaced, the stability of the drift tube during installation or disassembly can be effectively improved, the interference or damage to the adjacent drift tubes or the inner wall of the cavity is avoided, and the manual labor intensity can be effectively reduced.
The auxiliary device convenient for dismounting the drift tube has a simple structure and is convenient to use, the arranged supporting plate component can form a stable supporting state, the drift tube is prevented from sliding, and the auxiliary device can be suitable for drift tubes of different models; the height of the supporting plate assembly can be adjusted in real time by utilizing the threaded connection of the adjusting nut and the connecting screw rod, so that the supporting plate assembly is adaptive to the actual height of the drift tube, and the use is flexible.
The auxiliary device convenient for dismounting the drift tube is simple in use method and convenient to operate, can realize quick dismounting of the drift tube, and improves the replacement speed of the drift tube.
Drawings
Fig. 1 is a schematic view of the overall structure of the auxiliary device.
Fig. 2 is a bottom view of the auxiliary device.
Fig. 3 is a top view of the auxiliary device.
Fig. 4 is a sectional view taken along line a-a of fig. 3.
FIG. 5 is an axial cross-sectional view of the platen.
Fig. 6 is a schematic structural view of the flange.
Fig. 7 is a schematic view of a partial structure of a cavity of a linear accelerator when the auxiliary device is used.
Fig. 8 is a schematic view of a partial structure of another view angle of the linear accelerator cavity when the auxiliary device is in use.
In the above figures, the reference numerals are as follows: the device comprises a supporting plate assembly 1, a base plate 1-1, a first side plate 1-2, a second side plate 1-3, a connecting screw rod 2, a key groove 2-1, a flange plate 3, a screw rod mounting hole 3-1, an observation window 3-2, a pressing plate 4, a T-shaped hole 4-1, an adjusting nut 5, a flat key 6, a bolt 7, a through hole at the bottom of a cavity 8 and a drift tube 9.
Detailed Description
The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.
Example 1
The auxiliary device convenient for dismounting and mounting the drift tube comprises a supporting plate component 1, a connecting screw rod 2, a flange 3, a pressing plate 4 and an adjusting nut 5, wherein the bottom of the supporting plate component is connected with the flange through the connecting screw rod, the lower end of the connecting screw rod penetrates through the flange and then is in threaded connection with the adjusting nut, and the pressing plate is further arranged at the joint of the adjusting nut and the flange; as shown in fig. 7 or fig. 8, a supporting groove is formed at the upper part of the supporting plate assembly, the supporting groove is supported at the bottom of the drift tube 9, and the periphery of the flange plate is installed in the through hole 8 at the bottom of the cavity of the linear accelerator. The support plate assembly is used for supporting the drift tube so as to be convenient for dismounting or mounting the drift tube; the flange plate is mainly used for installing and fixing the whole auxiliary device on the cavity wall of the linear accelerator, and plays a role similar to that of a base, and generally, the flange plate is fixedly connected with the cavity wall of the linear accelerator through bolts, so that the whole auxiliary device can be conveniently assembled, disassembled and used; the height of the supporting plate assembly can be adjusted in real time by utilizing the threaded connection of the connecting screw rod and the adjusting nut, so that the supporting plate assembly is adaptive to the position of the drift tube; the pressure plate is mainly used for fixing or loosening the adjusting nut, so that the connecting screw rod and the supporting plate assembly are in a fixed stable state or an adjustable state of moving up and down.
As shown in fig. 1 or fig. 3, the pallet assembly includes a base plate 1-1, a first side plate 1-2 and a second side plate 1-3, the first side plate and the second side plate are oppositely disposed on two sides of the base plate; the bottom of the base plate is welded with the connecting screw rod, so that the supporting plate component and the connecting screw rod form an integrated structure. The structural supporting plate component can form a stable supporting state. The first side plate, the second side plate and the base plate can be fixed through welding. In the supporting plate assembly, the first side plate and the second side plate are respectively in a state of extending obliquely upwards, a trapezoidal concave space is formed among the base plate, the first side plate and the second side plate, and the bottom of the drift tube is located in the trapezoidal concave space (as shown in fig. 7 or fig. 8). The trapezoidal depression space can stably wrap the lower part of the drift tube therein, so that the drift tube is prevented from sliding; meanwhile, due to the fact that the two sides of the drift tube are provided with the inclination degrees, the drift tube can adapt to drift tubes of different models. As shown in FIG. 4, the bottom of the substrate is provided with grooves 1-4, and the upper ends of the connecting screws are welded and fixed with the substrate in the grooves. The stability between base plate and the connecting bolt can be effectively improved by the arrangement of the groove, so that the stability of the whole auxiliary device during use is improved.
As shown in fig. 1 or fig. 4, at least one key groove 2-1 is formed on the outer wall of the connecting screw, and the key groove is arranged along the axial direction of the connecting screw.
The flange plate is provided with a screw mounting hole 3-1 (shown in figure 6), the inner side of the screw mounting hole is provided with a flat key 6 (shown in figure 4) corresponding to the key groove, and the flat key is in clearance fit with the key groove. Wherein, the parallel key is fixed in the screw rod mounting hole inboard through the mode of spot welding (promptly at the installation department of parallel key, the keyway has also been seted up at the screw rod mounting hole inboard to the ring flange, and after the parallel key was packed into the keyway on the ring flange, it was fixed with ring flange spot welding), utilizes the cooperation of parallel key and keyway, can stabilize the connection between connecting screw and the ring flange on the one hand, and on the other hand also can play the guide effect to reciprocating of connecting screw to reach layer board subassembly and drift tube steady movement's purpose. The flange plate is also provided with an observation window 3-2. The observation window can be realized by installing transparent glass or organic glass on the flange plate, or the glass or the organic glass can not be installed. In the dismounting process or the mounting process of the drift tube, the moving condition of the drift tube in the cavity of the linear accelerator can be observed in real time through the observation window, so that the drift tube is ensured to move stably, and the adjacent drift tube or the inner wall of the cavity is prevented from being contacted or collided.
As shown in fig. 4, the axial section of the adjusting nut is T-shaped, a corresponding T-shaped hole 4-1 (as shown in fig. 5) is formed in the middle of the pressure plate, and after the adjusting nut is embedded in the T-shaped hole, the pressure plate is connected with the flange plate through a bolt 7.
Example 2
The embodiment is a method for using the auxiliary device for conveniently dismounting the drift tube in the embodiment 1, which mainly comprises the following steps:
(1) the adjusting nut is embedded in the pressing plate in advance;
(2) the upper end of the connecting screw rod is welded with the supporting plate assembly, and the lower end of the connecting screw rod penetrates through the flange plate and then is connected with the adjusting nut;
(3) rotating the adjusting nut to be connected with the bottom surface of the flange plate, connecting the pressing plate with the bottom surface of the flange plate, penetrating the pressing plate by using bolts and screwing the bolts into the flange plate, but not screwing the bolts;
(4) fixedly mounting a flange plate in a through hole at the bottom of a cavity of the linear accelerator in a bolt connection mode;
therefore, the connecting screw rod drives the supporting plate assembly to move up and down relative to the flange plate by rotating the adjusting nut, so that the height of the supporting plate assembly is adjusted, and the height of the supporting plate assembly is adapted to the drift tube.
When the drift tube needs to be disassembled, the following operations are carried out:
(A) rotating the adjusting nut until the supporting plate assembly rises to be contacted with the bottom of the drift tube;
(B) the bolt on the pressure plate is screwed down to fix the adjusting nut, so that the supporting plate assembly is ensured to be stable and immovable;
(C) detaching the drift tube from the linear accelerator;
(D) after the drift tube is disassembled, the bolt on the pressing plate is unscrewed, and the adjusting nut is rotated, so that the connecting screw rod drives the supporting plate assembly and the drift tube to slowly descend;
(E) when the supporting plate assembly and the drift tube are lowered to the lowest end, the flange plate is detached from the cavity wall of the linear accelerator, and the drift tube is taken out;
when the drift tube needs to be installed, the following operations are carried out:
(a) the connecting screw rod drives the supporting plate assembly to descend to the lowest end, and after the drift tube is placed on the supporting plate assembly, the flange plate is installed on the cavity wall of the linear accelerator;
(b) rotating the adjusting nut to enable the connecting screw to drive the supporting plate assembly and the drift tube to slowly rise until the drift tube reaches the installation position;
(c) the bolt on the pressure plate is screwed down to fix the adjusting nut, so that the supporting plate assembly is ensured to be stable and immovable;
(d) and a drift tube is arranged on the linear accelerator.
After the drift tube is installed, if the auxiliary device needs to be removed according to actual needs, the flange plate can be directly detached from the cavity wall of the linear accelerator; or the bolt on the pressing plate can be firstly unscrewed, the adjusting nut is rotated, the screw rod drives the supporting plate component to descend, and then the flange plate is detached from the cavity wall of the linear accelerator.
In the using method, the moving condition of the drift tube in the cavity of the linear accelerator can be observed in real time through the observation window on the flange plate in the detaching process or the installing process of the drift tube, so that the stable movement of the drift tube is ensured, and the contact or the collision with the adjacent drift tube or the inner wall of the cavity is avoided.
In addition, if the drift tube does not need to be replaced, the auxiliary device is not arranged below the drift tube, and a through hole at the bottom of the cavity of the linear accelerator is used as a vacuum pump hole or a fixed tuner hole for vacuumizing. When the drift tube needs to be replaced, the auxiliary device is assembled and disassembled by the two holes, and after the drift tube is assembled and disassembled, the through hole at the bottom of the cavity of the linear accelerator is restored to be connected with the vacuum pump or the tuner. Therefore, when a certain drift tube is replaced, no matter in the detaching process or the installing process of the drift tube, the drift tube can be directly supported by other tools or hands through the through holes at the bottom of the adjacent cavity, the stability of the detaching process of the drift tube is further improved, and the drift tube is better prevented from contacting or colliding with the adjacent drift tube or the inner wall of the cavity.
As described above, the present invention can be realized well, and the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; all equivalent changes and modifications made according to the present invention are intended to be covered by the scope of the claims of the present invention.
Claims (8)
1. An auxiliary device convenient for dismounting a drift tube is characterized by comprising a supporting plate assembly, a connecting screw rod, a flange plate, a pressing plate and an adjusting nut, wherein the bottom of the supporting plate assembly is connected with the flange plate through the connecting screw rod; the upper portion of layer board subassembly forms the bearing groove, and the bearing groove bearing is in drift tube bottom, and the periphery of ring flange is installed in linear accelerator's cavity bottom through-hole.
2. The auxiliary device for facilitating the dismounting and mounting of the drift tube of claim 1, wherein the supporting plate assembly comprises a base plate, a first side plate and a second side plate, and the first side plate and the second side plate are oppositely arranged at two sides of the base plate; the bottom of the base plate is welded with the connecting screw rod.
3. The auxiliary device of claim 2, wherein the first side plate and the second side plate of the support plate assembly extend obliquely upward, a trapezoidal recessed space is formed between the base plate and the first side plate, and the bottom of the drift tube is located in the trapezoidal recessed space.
4. The auxiliary device for facilitating the dismounting and mounting of the drift tube of claim 2, wherein a groove is formed at the bottom of the base plate, and the upper end of the connecting screw rod is welded and fixed with the base plate in the groove.
5. The auxiliary device for facilitating the dismounting and mounting of the drift tube of claim 1, wherein the outer wall of the connecting screw is provided with at least one key groove, and the key groove is arranged along the axial direction of the connecting screw.
6. The auxiliary device for facilitating the dismounting and mounting of the drift tube of claim 5, wherein the flange is provided with a screw mounting hole, a flat key is arranged at a position corresponding to the key groove at the inner side of the screw mounting hole, and the flat key is in clearance fit with the key groove.
7. The auxiliary device for facilitating the dismounting and mounting of the drift tube of claim 1, wherein the flange plate is further provided with an observation window.
8. The auxiliary device for facilitating the dismounting and mounting of the drift tube as claimed in claim 1, wherein the axial section of the adjusting nut is T-shaped, a corresponding T-shaped hole is formed in the middle of the pressing plate, and after the adjusting nut is embedded in the T-shaped hole, the pressing plate is connected with the flange plate through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021655037.5U CN212947434U (en) | 2020-08-11 | 2020-08-11 | Auxiliary device convenient to drift tube dismouting is used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021655037.5U CN212947434U (en) | 2020-08-11 | 2020-08-11 | Auxiliary device convenient to drift tube dismouting is used |
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| Publication Number | Publication Date |
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| CN212947434U true CN212947434U (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021655037.5U Active CN212947434U (en) | 2020-08-11 | 2020-08-11 | Auxiliary device convenient to drift tube dismouting is used |
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| Country | Link |
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| CN (1) | CN212947434U (en) |
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2020
- 2020-08-11 CN CN202021655037.5U patent/CN212947434U/en active Active
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