CN118218893A - High-temperature superconductive Tokamak vacuum chamber main body sector welding tool - Google Patents

Abstract

The invention discloses a high-temperature superconductive Tokamak vacuum chamber main body sector welding tool, and relates to the technical field of welding equipment. By arranging the first limiting unit and the second limiting unit, the shape of the outer wall of the clamped sector body can be simulated by using the plurality of clamping units, and the simulated shape can be memorized, namely the simulated shape is limited, so that the aim of rapidly clamping and fixing the subsequent welding operation of the sector body with the same specification is fulfilled; the clamping force can be uniformly dispersed by the plurality of clamping units, so that the condition that the welding piece is deformed due to the fact that the clamping force is too concentrated can be avoided; when the first limiting unit and the second limiting unit are used for fixing the sector bodies with other specifications, the previous shape memory can be relieved, and the outer wall shape simulation is performed again on the outer wall of the sector body with the current specification, so that the sector body is a welding tool suitable for the current sector body, and the application range of the welding tool is greatly improved.

Description

High-temperature superconductive Tokamak vacuum chamber main body sector welding tool

Technical Field

The invention relates to the technical field of welding equipment, in particular to a high-temperature superconductive Tokamak vacuum chamber main body sector welding tool.

Background

The high temperature superconducting tokamak vacuum chamber body sector is a part of the vacuum chamber body in the tokamak device, and is generally composed of a plurality of sector-shaped segments. The segments are interconnected to form the structure of the entire vacuum chamber body. The body segments are typically made of high temperature superconducting material and can withstand high magnetic fields and high temperature environments while having good mechanical strength and corrosion resistance.

The main body of the sector is formed by welding a straight line section, a large arc section, a small arc section, a welding flange and a collar. When the sector is processed, firstly, the straight line segment, the large arc segment and the small arc segment are required to be welded and connected, and then the next welding processing work can be performed, so that the basis of the sector processing during the welding work of the straight line segment, the large arc segment and the small arc segment is adopted. During welding, it is important to select proper positioning clamping points, and if the clamping positions are improperly selected, the workpiece is easily deformed, so that the machining precision is affected.

Refer to chinese patent publication No. CN 208214661U's a arc steel sheet and angle steel welded location frock, through arc steel sheet and angle steel welded location frock overall structure light and handy, make welding process's maneuverability increase, reduced the potential safety hazard by a wide margin, effectively improved welding efficiency. The bending angle of the arc-shaped steel plate is limited through the baffle, the angle steel is fixed through the locating pin, and then the arc-shaped steel plate and the angle steel are clamped through the horizontal rapid clamp and the vertical rapid clamp, so that the precision requirement on arc-shaped gap welding is met, and the high quality of welding is guaranteed. The arrangement of the stop blocks can enable the edge positions of the arc-shaped steel plates to be accurate.

Referring to an arc splice plate welding tool for tunnel construction with a Chinese patent publication number of CN209157495U, the welding short plates can be fixed, so that the deformation of the short plates during welding is reduced; simple structure, convenient to use can be applicable to the clamp of the short board of different width and thickness and fix.

The above patents were analyzed comprehensively to obtain the following drawbacks:

At present, most welding clamping tools used on industrial production lines are fixed in size and shape, cannot effectively clamp workpieces in various different shapes, only complete clamping operation by means of a small number of clamping points, cannot uniformly distribute clamping force on the surface of a weldment, and easily cause deformation of the weldment in the clamping process, so that the weldment is scrapped. For example, referring to a positioning tool for welding an arc-shaped steel plate and angle steel with the publication number CN208214661U, part of the welding parts are clamped by a small number of horizontal quick clamps and vertical quick clamps, so that the positioning tool is only suitable for processing welding parts with a single shape, and the clamping force cannot be uniformly distributed on the surfaces of the welding parts, so that deformation of the welding parts is easily caused in the clamping process, and the welding parts are scrapped.

At present, the welding tool cannot flexibly adapt to the shape of a workpiece, and operators must constantly replace and adjust the tool when welding workpieces with different specifications, so that the downtime and the labor cost of a production line are increased; because the welding fixture has higher cost and can only be suitable for workpieces with specific shapes, enterprises need to continuously purchase and maintain various fixtures, and the production cost is increased. For example, referring to an arc splice plate welding tool for tunnel construction, which is disclosed in chinese patent publication No. CN209157495U, only welding is performed for a welding part with one specification and shape, clamping and positioning cannot be performed when the welding part with different radians is replaced, and the processing cost is increased when the clamp with the corresponding size is replaced.

Therefore, the invention provides a high-temperature superconductive Tokamak vacuum chamber main body sector welding tool to solve the problems.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a welding fixture for a main body sector of a high-temperature superconductive Tokamak vacuum chamber, which solves the problems that the welding fixture used on most industrial production lines at present is of fixed size and shape, can not effectively clamp workpieces of various different shapes, can only finish clamping operation by means of a small number of clamping points, can not uniformly distribute clamping force to the surface of a weldment, easily causes deformation of the weldment in the clamping process, causes scrap of the weldment, can not flexibly adapt to the shape of the workpiece, and operators must constantly replace and adjust the fixture when welding workpieces of different specifications, and increases the downtime, labor cost and equipment purchase cost of the production line.

In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a high temperature superconductor tokamak vacuum chamber main part sector welding frock, includes the operation panel and sets up the sector body in the operation panel top, the inside of operation panel is fixedly provided with servo motor, and servo motor's output shaft rotates runs through the operation panel and fixedly is provided with the carousel, the top of carousel evenly is provided with the positioning mechanism who is used for centre gripping high temperature superconductor tokamak vacuum chamber main part sector, the top of operation panel just is located the fixed ring gear that is used for driving positioning mechanism to accomplish sector welding that is provided with in the below of carousel.

The positioning mechanism comprises a bearing seat detachably connected to the top of the turntable through bolts, two first limiting units symmetrically arranged on the front side and the rear side of the top of the bearing seat, and two second limiting units arranged on the left side and the right side of the top of the bearing seat, wherein the first limiting units and the second limiting units are matched together to clamp the sector body, and a smoke purifying mechanism for intermittently purifying welding smoke is arranged on the top of the bearing seat and between the first limiting units and the second limiting units.

Preferably, the first limit unit and the second limit unit are identical except that the lengths are different, the first limit unit comprises a U-shaped frame detachably arranged at the top of the bearing seat through bolts and a plurality of lifting through grooves and round mounting holes formed in the left side wall and the right side wall of the U-shaped frame, clamping units used for clamping the fan body are arranged in the round mounting holes, a power mechanism used for simultaneously driving the clamping units to complete clamping actions is arranged in the U-shaped frame, position regulating and controlling components used for controlling the clamping shapes of the clamping units are arranged on the opposite side walls of the U-shaped frame, and a first protective cover and a second protective cover used for protecting the power mechanism and the position regulating and controlling components are detachably arranged on the outer walls of the left side and the right side of the U-shaped frame respectively.

Preferably, the power unit is including sliding the lift slider that sets up in four lift logical inslot portion and fixed setting on the relative lateral wall of lift slider and slide the bearing plate that sets up in U type frame inside, adjacent two the top of lift slider is fixed jointly and is provided with the horizontal pole, and the fixed reset spring that is provided with between lift slider and the relative lateral wall of lift logical groove, the top of horizontal pole is evenly fixed and is provided with a plurality of racks two, the below of U type frame is provided with the electric putter subassembly, the output shaft of electric putter subassembly slides and runs through U type frame and with bearing plate fixed connection, the electric putter subassembly includes electric putter and the fixed buffer cover that sets up at the electric putter output, the inside slip of buffer cover is provided with the push-and-pull rod, and the top of push-and-pull rod is fixed to be set up in the bottom of bearing plate.

Preferably, the clamping unit comprises a first cylinder body fixedly arranged in the circular mounting hole and a second cylinder body slidingly connected in the first cylinder body, a threaded hole is formed in the second cylinder body, a first screw rod is connected with the threaded hole in a threaded mode, one end of the first screw rod rotates and penetrates through the first cylinder body, the first screw rod is fixedly connected with a gear connected with the second rack in a meshed mode, a slide way is formed in one side, away from the threaded hole, of the second cylinder body, a simulation clamping head unit for simulating the shape of the clamping part of the outer wall of the welding part is arranged in the second cylinder body, a through hole is formed in the second outer wall of the cylinder body, and an arc clamping head for controlling the position of the simulation clamping head unit is slidingly arranged in the through hole.

Preferably, the simulation clamping head unit comprises a clamping rod in the sliding connection with a first rack and an arc clamping head which are respectively and fixedly arranged at two ends of the clamping rod, and a spring is sleeved on the outer wall of the clamping rod and positioned between a second barrel and the arc clamping head in a sliding manner.

Preferably, the position regulating and controlling assembly comprises a plurality of supporting arms and a vertical rod, wherein the supporting arms are sequentially arranged from top to bottom at equal intervals, the vertical rod is fixedly arranged between two adjacent supporting arms, a screw rod II is rotatably arranged in the middle of the top of the uppermost supporting arm, and the screw rod II is connected with a protective cover II through threads.

Preferably, the flue gas purification mechanism comprises a fixed dryer and a gas collecting hood, wherein the dryer is fixedly arranged inside the bearing seat, the gas collecting hood is fixedly arranged at the top end of the dryer and is positioned above the bearing seat, a conical guide cylinder for conveying welding flue gas is detachably arranged at the bottom end of the dryer, a gas purification assembly for purifying the welding flue gas is detachably arranged at the bottom end of the conical guide cylinder, a transmission shaft penetrates through the inside rotation of the dryer, fan blades are fixedly arranged at the top end of the transmission shaft and positioned inside the dryer, a transmission for accelerating the rotating speed of the transmission is arranged at the bottom of the transmission shaft, and a gear II which is in meshed connection with a gear ring is fixedly arranged at the input end of the transmission.

Preferably, the fan section body comprises a straight line section and small arc sections connected to the left end and the right end of the fan section body in a welding mode, and one ends of the two small arc sections are connected with a large arc section in a welding mode.

Preferably, the top of the bearing plate is detachably provided with a positioning plate, the top of the positioning plate is provided with a limiting groove matched with the shape of the straight line section or the small arc section or the large arc section, and when the straight line section or the small arc section or the large arc section is welded, the straight line section or the small arc section or the large arc section is directly placed in the limiting groove with the corresponding shape, so that the preliminary limitation of the position can be completed.

Advantageous effects

The invention provides a welding fixture for a main body sector of a high-temperature superconductive Tokamak vacuum chamber. Compared with the prior art, the method has the following beneficial effects:

1. The utility model provides a high temperature superconductive Tokamak vacuum chamber main part sector welding frock, the inside through the operation panel is fixed be provided with servo motor, servo motor's output shaft rotates runs through the operation panel and fixedly is provided with the carousel, the top of carousel evenly is provided with the positioning mechanism who is used for centre gripping high temperature superconductive Tokamak vacuum chamber main part sector, the top of operation panel and the fixed ring gear that is used for driving positioning mechanism to accomplish sector welding that is located the below of carousel, the welding centre gripping frock that has solved to use on most industrial production lines at present is fixed size and shape, can't carry out effective centre gripping to the work piece of various different shapes, accomplish the centre gripping operation with the help of a small amount of clamping point position only, can't be with clamping force evenly distributed to the surface of weldment, lead to easily causing the deformation of weldment at the centre gripping in-process, cause the weldment to scrap, welding frock can't adapt to the shape of work piece in a flexible way, operating personnel must constantly change and adjust the frock when welding different specification work pieces, the downtime of production line has been increased, the cost of labor and equipment acquisition cost.

2. The high-temperature superconductive Tokamak vacuum chamber main body sector welding fixture comprises a first limiting unit and a second limiting unit, wherein the first limiting unit and the second limiting unit are arranged, so that the shape of the outer wall of a clamped sector body can be simulated by using a plurality of clamping units, and the simulated shape can be memorized, namely the simulated shape is limited, and the purpose of rapidly clamping and fixing the subsequent sector body welding operation with the same specification is realized; secondly, the clamping units can be uniformly distributed on the surface of the outer wall of the sector body, so that the clamping force can be uniformly dispersed, and the situation that the welding piece is deformed due to too concentrated clamping force can be avoided; furthermore, when the first limiting unit and the second limiting unit are used for fixing the sector bodies with other specifications, the previous shape memory can be relieved, and the outer wall shape simulation is performed again on the outer wall of the sector body with the current specification, so that the sector body is a welding tool suitable for the current sector body, and the application range of the welding tool is greatly improved.

3. A high-temperature superconductive Tokamak vacuum chamber main body sector welding tool is characterized in that a plurality of positioning mechanisms are arranged on a turntable, so that different positioning mechanisms can be intermittently driven to reach a welding position by utilizing intermittent rotation of a servo motor, and continuous welding operation is performed by matching with welding equipment, so that the welding efficiency can be improved; secondly, in the rotating process of the rotary table, the gear ring can drive the gear II to rotate, so that power is provided for the rotation of the fan blades, part of welding smoke dispersed around can be sucked into the gas purifying assembly for treatment, the health hazard of the welding smoke to workers can be reduced, and the health of the workers is protected; furthermore, the operation of the flue gas purification assembly is synchronously realized when the turntable is driven to rotate by the servo motor, and a power device is not required to be independently arranged for the operation of the flue gas purification assembly, so that the cost for arranging the power device is saved, the structure is simpler, and the follow-up overhaul and maintenance work is convenient.

4. A high-temperature superconductive Tokamak vacuum chamber main body sector welding tool is provided with a power mechanism, a plurality of racks can be driven to move downwards simultaneously by utilizing the pressure when a pressure bearing plate is manually pressed down, the purpose of driving a plurality of gears to rotate is achieved, a plurality of clamping units can synchronously approach a weldment, the purpose of rapidly simulating the shape of the outer wall of the weldment is achieved, the time of a clamping process simulated by the clamping units is shortened, and the welding efficiency is greatly improved.

Drawings

FIG. 1 is a schematic view of the overall three-dimensional structure of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic view of the exploded construction of the present invention;

FIG. 4 is an enlarged schematic view of the portion A of FIG. 3 according to the present invention;

FIG. 5 is a schematic view of a positioning mechanism according to the present invention;

FIG. 6 is a schematic view showing an exploded structure of the limiting unit of the present invention;

FIG. 7 is a schematic cross-sectional view of an electric putter assembly according to the present invention;

FIG. 8 is an enlarged schematic view of the portion B of FIG. 6 according to the present invention;

FIG. 9 is a schematic cross-sectional view of a clamping unit according to the present invention;

FIG. 10 is an enlarged schematic view of the portion C of FIG. 9 in accordance with the present invention;

FIG. 11 is a schematic view of a position control assembly according to the present invention;

FIG. 12 is a schematic cross-sectional view of the flue gas cleaning mechanism of the present invention;

Fig. 13 is a schematic view of a sector body structure of the present invention.

In the figure: 1. an operation table; 2. a turntable; 3. a positioning mechanism; 31. a bearing seat; 32. a first limiting unit; 321. a U-shaped frame; 322. lifting through grooves; 323. a clamping unit; 3231. a first cylinder body; 3232. a second cylinder; 3233. a first screw rod; 3234. a first gear; 3235. a clamping rod; 3236. a first rack; 3237. an arc-shaped clamping head; 3238. a spring; 324. a lifting slide block; 325. a pressure bearing plate; 326. a cross bar; 327. a second rack; 328. an electric push rod assembly; 3281. an electric push rod; 3282. a buffer sleeve; 3283. a push-pull rod; 329. a position control assembly; 3291. a support arm; 3292. a vertical rod; 3293. a second screw rod; 3210. a first protective cover; 3211. a second protective cover; 33. a second limiting unit; 34. a flue gas purifying mechanism; 341. an air duct; 342. a gas collecting hood; 343. a conical guide cylinder; 344. a gas cleaning assembly; 345. a transmission shaft; 346. a fan blade; 347. a transmission; 348. a second gear; 4. a gear ring; 5. a sector body; 51. a straight line segment; 52. a small arc section; 53. large arc segments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1 to 13, the present invention provides two technical solutions: a high-temperature superconductive Tokamak vacuum chamber main body sector welding tool specifically comprises the following embodiments:

Embodiment one: the utility model provides a high temperature superconductor tokamak vacuum chamber main part sector welding frock, includes operation panel 1 and sets up the sector body 5 in operation panel 1 top, the inside of operation panel 1 is fixedly provided with servo motor, servo motor's output shaft rotates and runs through operation panel 1 and fixedly is provided with carousel 2, the top of carousel 2 evenly is provided with the positioning mechanism 3 that is used for centre gripping high temperature superconductor tokamak vacuum chamber main part sector, the top of operation panel 1 and be located the fixed ring gear 4 that is used for driving positioning mechanism 3 to accomplish the sector welding that is provided with in below of carousel 2; the top of the operation table 1 is detachably connected with an annular bracket for lifting and supporting the turntable 2 through bolts, the top of the annular bracket is rotationally connected with balls, and the top of the balls is contacted with the bottom of the turntable 2 and is used for supporting and reducing friction between the turntable 2 and the annular bracket. The control box for controlling the operation of the servo motor and other electrical equipment is fixedly arranged on one side of the top of the operating platform 1, a plurality of controllers are arranged in the control box, and the controllers are electrically connected with the servo motor and other electrical equipment through wires. The positioning mechanism 3 comprises a bearing seat 31 detachably connected to the top of the turntable 2 through bolts, two first limiting units 32 symmetrically arranged on the front side and the rear side of the top of the bearing seat 31, and two second limiting units 33 arranged on the left side and the right side of the top of the bearing seat 31, wherein the first limiting units 32 and the second limiting units 33 are matched together to clamp the sector body 5, and a flue gas purifying mechanism 34 for intermittently purifying welding flue gas is arranged on the top of the bearing seat 31 and between the first limiting units 32 and the second limiting units 33. the first limiting unit 32 and the second limiting unit 33 have the same structure except different lengths, the first limiting unit 32 comprises a U-shaped frame 321 detachably arranged at the top of the bearing seat 31 through bolts, a plurality of lifting through grooves 322 and round mounting holes which are formed on the left side wall and the right side wall of the U-shaped frame 321, a clamping unit 323 used for clamping the sector body 5 is arranged in the round mounting holes, a power mechanism used for simultaneously driving the clamping units 323 to complete clamping action is arranged in the U-shaped frame 321, position regulating and controlling components 329 used for controlling the clamping shape of the clamping units 323 are arranged on the opposite side walls of the U-shaped frame 321, and a first protective cover 3210 and a second protective cover 3211 for protecting the power mechanism and the position regulating and controlling assembly 329 are respectively detachably arranged on the outer walls of the left side and the right side of the U-shaped frame 321. The power mechanism comprises lifting slide blocks 324 which are arranged in the four lifting through grooves 322 in a sliding manner and a pressure bearing plate 325 which is fixedly arranged on the opposite side walls of the lifting slide blocks 324 and is arranged in the U-shaped frame 321 in a sliding manner, wherein a cross rod 326 is fixedly arranged at the top of each two adjacent lifting slide blocks 324 together, a reset spring is fixedly arranged between the lifting slide blocks 324 and the opposite side walls of the lifting through grooves 322, a plurality of racks II 327 are uniformly and fixedly arranged at the top of the cross rod 326, an electric push rod assembly 328 is arranged below the U-shaped frame 321, an output shaft of the electric push rod assembly 328 penetrates the U-shaped frame 321 in a sliding manner and is fixedly connected with the pressure bearing plate 325, The electric push rod assembly 328 comprises an electric push rod 3281 and a buffer sleeve 3282 fixedly arranged at the output end of the electric push rod 3281, a push-pull rod 3283 is slidably arranged in the buffer sleeve 3282, and the top end of the push-pull rod 3283 is fixedly arranged at the bottom of the pressure bearing plate 325. The bottom end of the push-pull rod 3283 is fixedly provided with a circular plate, the circular plate is slidably arranged in the buffer sleeve 3282, and two sides of the top of the buffer sleeve 3282 are fixedly provided with stop blocks for preventing the circular plate from separating from the buffer sleeve 3282. The electric push rod component 328 is detachably arranged at the bottom of the turntable 2 through bolts and is used for pushing up or pulling down the bearing plate 325 so as to achieve the purpose of driving the rack II 327 to move, and further driving the gear I3234 by using the rack II 327. Four lifting through grooves 322 are formed in the front and rear positions of the left and right side walls of the U-shaped frame 321, and a plurality of circular mounting holes are uniformly distributed above two adjacent circular mounting holes. The top of the first protection cover 3210 is uniformly provided with guide through holes corresponding to the positions of the second racks 327 one by one, teeth are not arranged on the top end part of each second rack 327, which is close to the first protection cover 3210, the top end of the first protection cover 3210 penetrates through the guide through holes at the corresponding positions in a sliding manner and extends to the outside, and the second racks 327 are guided along the guide through holes to move in a fixed direction. The outer wall of the second rack 327 is fixedly sleeved with a rubber protective sleeve for preventing the sector body 5 from being damaged during clamping. The top of the bearing plate 325 is detachably provided with a positioning plate, the top of the positioning plate is provided with a limit groove matched with the shape of the straight line segment 51 or the small arc segment 52 or the large arc segment 53, when the straight line segment 51 or the small arc segment 52 or the large arc segment 53 needs to be welded, the straight line segment 51 or the small arc segment 52 or the large arc segment 53 can be directly placed in the limit groove with the corresponding shape, at the moment, the ends of the straight line segment 51, the two small arc segments 52 and the large arc segment 53 can be connected to form a complete sector body 5 shape, the subsequent clamping action is facilitated, after the different positioning plates are correspondingly replaced, the size of the sector body 5 formed by the limit grooves at the top of the plurality of corresponding positioning plates is amplified or reduced in equal proportion, and within a range in which the plurality of gripping units 323 can achieve gripping. the clamping unit 323 comprises a first cylinder 3231 fixedly arranged in the circular mounting hole and a second cylinder 3232 in sliding connection with the first cylinder 3231, a threaded hole is formed in the second cylinder 3232, a first screw rod 3233 is connected in the threaded hole in a threaded manner, one end of the first screw rod 3233 rotates to penetrate the first cylinder 3231 and is fixedly connected with a first gear 3234 meshed with a second rack 327, a slide way is formed in one side, away from the threaded hole, of the second cylinder 3232, a simulation clamping head unit for simulating the shape of the clamping part of the outer wall of a welding part is arranged in the slide way, a through hole is formed in the outer wall of the second cylinder 3232, The inside of the through hole is slidably provided with an arc-shaped clamping head 3237 for controlling the position of the analog clamping head unit. The simulation clamping head unit comprises a clamping rod 3235 which is connected inside the slide way in a sliding way, a first rack 3236 and an arc-shaped clamping head 3237 which are respectively and fixedly arranged at two ends of the clamping rod 3235, and a spring 3238 which is arranged on the outer wall of the clamping rod 3235 and is positioned between the second cylinder 3232 and the arc-shaped clamping head 3237 in a sliding way. The arcuate clamping head 3237 and the first rack 3236 can be engaged to define the position of the first rack 3236, whereas the arcuate clamping head 3237 and the first rack 3236 can be disengaged to allow the first rack 3236 to move freely. The position control assembly 329 comprises a plurality of support arms 3291 and a vertical rod 3292, wherein the support arms 3291 are sequentially arranged at equal intervals from top to bottom, the vertical rod 3292 is fixedly arranged between two adjacent support arms 3291, a second screw rod 3293 is rotatably arranged in the middle of the top of the uppermost support arm 3291, and the second screw rod 3293 is connected with a second protective cover 3211 through threads. The position control assembly 329 is arranged in the second protective cover 3211, the top end of the second screw rod 3293 penetrates through the second protective cover 3211 and extends to the outside, and a knob is fixedly arranged at the top end of the second screw rod 3293 and used for conveniently twisting the second screw rod 3293. Each arcuate gripping head 3237 is fixedly connected to the bottom of an adjacent support arm 3291 by a connecting rod. The sector body 5 comprises a straight line section 51 and small arc sections 52 connected at the left end and the right end of the sector body in a welding mode, and one ends of the two small arc sections 52 are connected with a large arc section 53 in a welding mode. The straight line section 51 and the large arc section 53 are respectively placed on the bearing plates 325 of the first two limiting units 32 in the positioning mechanism 3, the second two small arc sections 52 are respectively placed on the bearing plates 325 of the second two limiting units 33 in the positioning mechanism 3, and the first two limiting units 32 and the second limiting units 33 can respectively simulate the shapes of different positions of the outer wall of the fan section body 5 so as to finish stable clamping.

Embodiment two: the main difference between this embodiment and the first technical solution is that: the utility model provides a high temperature superconductive Tokamak vacuum chamber main part sector welding frock, flue gas purifying mechanism 34 is including fixed setting up in the dryer 341 that bears the inside of seat 31 and fixed setting up in the dryer 341 top and be located the gas collecting channel 342 that bears the seat 31 top, the bottom of dryer 341 can be dismantled and be provided with the toper guide cylinder 343 that is used for carrying welding flue gas, the bottom of toper guide cylinder 343 can be dismantled and be provided with the gas cleaning subassembly 344 that is used for purifying welding flue gas, the inside rotation of dryer 341 is run through there is a transmission shaft 345, the top of transmission shaft 345 just is located the inside fixed flabellum 346 that is provided with of dryer 341, the bottom of transmission shaft 345 is provided with the derailleur 347 that is used for accelerating its rotational speed, the input of derailleur 347 is fixed be provided with the gear two 348 of ring gear 4 meshing connection. The speed changer 347 is fixedly connected with the bottom of the turntable 2 through a mounting bracket, the bottom end of the transmission shaft 345 is fixedly connected with the input end of the speed changer 347, and the speed changer 347 can accelerate and output the low rotation speed input by the second gear 348 so as to achieve the purpose of accelerating the rotation speed of the transmission shaft 345. The periphery of the outer wall of the gas collecting hood 342 is uniformly provided with gas inlets communicated with the inside of the air duct 341. The gas purification assembly 344 comprises a cylinder and a filter screen fixedly arranged on the inner wall of the cylinder, wherein a plurality of exhaust holes are uniformly formed in the outer wall of the cylinder and below the filter screen, and activated carbon is filled in the cylinder and below the filter screen for adsorbing toxic substances in welding smoke.

When in use, firstly, the straight line segment 51, the large arc segment 53 and the two small arc segments 52 which form the sector body 5 are taken, then the straight line segment 51 and the large arc segment 53 are respectively placed in the limit grooves at the top of the bearing plate 325 in the first two limit units 32, the two small arc segments 52 are respectively placed in the limit grooves at the bottom of the bearing plate 325 in the second two limit units 33, the ends of the four small arc segments are mutually close, at the moment, the straight line segment 51, the two small arc segments 52 and the large arc segment 53 are connected end to form a complete sector body 5 shape, then, the knob at the top of the second screw rod 3293 is manually rotated clockwise, because the second screw rod 3293 and the second protective cover 3211 are in threaded connection, Therefore, when the screw rod II 3293 is rotated clockwise, the plurality of supporting arms 3291 are synchronously driven to move upwards, and as the plurality of arc-shaped clamping heads 3237 and the supporting arms 3291 are fixedly connected, when the plurality of supporting arms 3291 move upwards, the arc-shaped clamping heads 3237 and the first rack 3236 are separated, then the straight line section 51 or the small arc section 52 which is already placed on the first limiting unit 32 is manually pressed downwards, the top of the pressure bearing plate 325 is pressed to move downwards along the inner wall of the U-shaped frame 321, meanwhile, the lifting sliding block 324 moves downwards along the lifting through groove 322, the reset spring is compressed to elastically deform, and as the second rack 327 and the first gear 3234 are in meshed connection, When the second racks 327 move downwards, the first driving gear 3234 is driven to rotate, and the first screw rod 3233 and the second barrel 3232 are in threaded connection, so that the first screw rod 3233 pushes the second barrel 3232 to move away from the first barrel 3231 when rotating until the arc clamping heads 3237 meet the outer wall of the sector body 5, the arc clamping heads 3237 in all the clamping units 323 are observed to abut against corresponding parts in the sector body 5, the springs 3238 generate elastic deformation, at the moment, the second screw rod 3293 is reversely rotated to drive the first supporting arms 3291 to move downwards until the first supporting arms 3236 at corresponding positions are meshed with the first arc clamping heads 3237 when the first screw rod 3233 cannot rotate, The clamping rod 3235 cannot move, and the ends of the plurality of clamping units 323 together form a clamping shape matched with the outer wall shape of the straight line section 51 or the large arc section 53, so that the clamping operation is performed on the other limiting unit 32 in the above manner. Then, the clamping operation mode of the small arc section 52 in the two limiting units II 33 is the same as the adjustment mode of the limiting unit I32, when the simulated clamping operation of all parts of the sector body 5 is finished, the sector body 5 which is placed and welded is positioned and debugged on the positioning mechanism 3, the electric push rod 3281 is controlled by the control box to pull the pressure bearing plate 325 to simulate the clamping operation of the butt welding part, the working process of the electric push rod 3281 when the pressure bearing plate 325 is pulled to move downwards is the same as the simulated clamping process when the welding part is manually pressed, the optimal downward moving distance of the electric push rod 3281 is determined through multiple times of debugging, and the distance value is set by the control box, this data is used for subsequent welding of the sector body 5 of the same specification. Then, the formal clamping operation before welding can be started, when the welding piece is clamped, the welding piece is placed in the limiting groove at the top of the pressure bearing plate 325 at the corresponding position, after all the welding pieces are placed, the control box is used for controlling and starting the electric push rod assembly 328 to pull the pressure bearing plate 325 to move downwards, the pressure bearing plate 325 drives the plurality of racks II 327 to drive the gear I3234 to rotate, so that the screw rod I3233 drives the barrel II 3232 to approach the welding piece until the output shaft of the electric push rod 3281 moves to the set length, and the clamping operation of the welding piece is completed at the moment. After the welding work of one of the sector bodies 5 is finished, the servo motor drives the turntable 2 to rotate by one hundred twenty degrees, in addition, the clamped sector body 5 is moved to the welding device position, and continuous welding operation is performed again. When the turntable 2 rotates, as the gear two 348 is meshed with the gear ring 4, when the turntable 2 drives all the positioning mechanisms 3 to revolve around the operation table 1, the gear ring 4 drives the gear two 348 to rotate, the lower rotating speed input by the gear two 348 to the transmission 347 is accelerated and then transmitted to the transmission shaft 345, the suction force generated by the fan blades 346 when rotating in the air cylinder 341 sucks part of the flue gas dispersed around during the last welding into the air cylinder 341 through the gas collecting hood 342 and conveys the flue gas into the gas purifying assembly 344 through the conical guide cylinder 343, the large particle impurities in the flue gas are filtered by the filter screen, toxic components in the flue gas are adsorbed by the activated carbon, the gas cleaning assembly 344 may be removed and replaced after a period of use to maintain an efficient flue gas treatment.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The utility model provides a high temperature superconductor tokamak vacuum chamber main part sector welding frock, includes operation panel (1) and sets up sector body (5) in operation panel (1) top, its characterized in that: the device comprises an operating platform (1), wherein a servo motor is fixedly arranged in the operating platform (1), an output shaft of the servo motor rotates to penetrate through the operating platform (1) and is fixedly provided with a rotary table (2), a positioning mechanism (3) for clamping a main body sector of a superconducting Tokamak vacuum chamber is uniformly arranged at the top of the rotary table (2), and a gear ring (4) for driving the positioning mechanism (3) to finish sector welding is fixedly arranged at the top of the operating platform (1) and below the rotary table (2);

The positioning mechanism (3) comprises a bearing seat (31) detachably connected to the top of the turntable (2) through bolts, two first limiting units (32) symmetrically arranged on the front side and the rear side of the top of the bearing seat (31) and two second limiting units (33) arranged on the left side and the right side of the top of the bearing seat (31), wherein the first limiting units (32) and the second limiting units (33) are matched together to clamp the sector body (5), and a smoke purifying mechanism (34) for intermittently purifying welding smoke is arranged at the top of the bearing seat (31) and between the first limiting units (32) and the second limiting units (33).

2. The high temperature superconducting tokamak vacuum chamber body sector welding fixture of claim 1, wherein: the utility model discloses a motor vehicle, including spacing unit one (32) and spacing unit two (33), except that length is different, other structures are the same, spacing unit one (32) including can dismantle setting up U type frame (321) at bearing seat (31) top through the bolt and offer a plurality of lift logical groove (322) on the lateral wall about U type frame (321), circular mounting hole, be provided with in the circular mounting hole and be used for centre gripping sector body (5) centre gripping unit (323), the inside of U type frame (321) is provided with the power unit that is used for driving a plurality of centre gripping units (323) simultaneously and accomplishes the centre gripping action, all be provided with on the opposite lateral wall of U type frame (321) and be used for controlling a plurality of centre gripping units (323) centre gripping shape position regulation and control subassembly (329), and can dismantle respectively on the left and right sides outer wall of U type frame (321) and be provided with the shield first (3210), shield second (3211) that are used for protecting power unit and position regulation and subassembly (329).

3. The high temperature superconducting tokamak vacuum chamber body sector welding fixture of claim 2, wherein: the power mechanism comprises lifting sliding blocks (324) which are arranged inside four lifting through grooves (322) in a sliding mode and bearing plates (325) which are fixedly arranged on opposite side walls of the lifting sliding blocks (324) and are arranged inside the U-shaped frames (321) in a sliding mode, a transverse rod (326) is fixedly arranged at the top of each lifting sliding block (324) in a common mode, reset springs are fixedly arranged between the lifting sliding blocks (324) and opposite side walls of the lifting through grooves (322), a plurality of racks two (327) are uniformly and fixedly arranged at the top of each transverse rod (326), an electric push rod assembly (328) is arranged below the U-shaped frames (321), an output shaft of the electric push rod assembly (328) penetrates through the U-shaped frames (321) in a sliding mode and is fixedly connected with the corresponding bearing plates (325), each electric push rod assembly (328) comprises an electric push rod (3281) and a buffer sleeve (3282) which is fixedly arranged at the output end of each electric push rod (3281), a rod (3283) is fixedly arranged at the bottom of each bearing plate (325) in a sliding mode.

4. A high temperature superconducting tokamak vacuum chamber body sector welding fixture as claimed in claim 3, wherein: the clamping unit (323) comprises a first cylinder (3231) fixedly arranged in a circular mounting hole and a second cylinder (3232) slidingly connected to the first cylinder (3231), a threaded hole is formed in the second cylinder (3232), a first screw rod (3233) is connected to the threaded hole in a threaded mode, one end of the first screw rod (3233) rotates to penetrate through the first cylinder (3231) and is fixedly connected with a first gear (3234) in meshed connection with a second rack (327), a slide way is formed in one side, away from the threaded hole, of the second cylinder (3232), a simulation clamping head unit used for simulating the shape of a clamping part of the outer wall of a welding part is arranged in the slide way, a through hole is formed in the outer wall of the second cylinder (3232), and an arc-shaped clamping head (3237) used for controlling the position of the simulation clamping head unit is slidingly arranged in the through hole.

5. The high temperature superconducting tokamak vacuum chamber body sector welding fixture of claim 4, wherein: the simulation clamping head unit comprises a clamping rod (3235) which is connected inside the slide way in a sliding mode, a first rack (3236) and an arc-shaped clamping head (3237) which are respectively and fixedly arranged at two ends of the clamping rod (3235), and a spring (3238) is sleeved on the outer wall of the clamping rod (3235) and positioned between the second cylinder (3232) and the arc-shaped clamping head (3237) in a sliding mode.

6. The high temperature superconducting tokamak vacuum chamber body sector welding fixture of claim 2, wherein: the position control assembly (329) comprises a plurality of support arms (3291) and a vertical rod (3292) fixedly arranged between two adjacent support arms (3291) from top to bottom, a screw rod II (3293) is rotatably arranged in the middle of the top of the uppermost support arm (3291), and the screw rod II (3293) is connected with a protective cover II (3211) through threads.

7. The high temperature superconducting tokamak vacuum chamber body sector welding fixture of claim 1, wherein: the utility model provides a flue gas purifying mechanism (34) is including fixed setting up in the dryer (341) that bears seat (31) inside and fixed setting up in dryer (341) top and be located gas collecting channel (342) that bears seat (31) top, the bottom of dryer (341) can be dismantled and be provided with conical guide section of thick bamboo (343) that are used for carrying welding flue gas, conical guide section of thick bamboo (343) bottom can be dismantled and be provided with gas purification subassembly (344) that are used for purifying welding flue gas, the inside rotation of dryer (341) is run through there is a transmission shaft (345), the top of transmission shaft (345) just is located the inside fixed flabellum (346) that is provided with of dryer (341), the bottom of transmission shaft (345) is provided with derailleur (347) that are used for accelerating its rotational speed, the input of derailleur (347) is fixed be provided with gear two (348) of ring gear (4) meshing connection.

8. A high temperature superconducting tokamak vacuum chamber body sector welding fixture as claimed in claim 3, wherein: the fan body (5) comprises straight line segments (51) and small arc segments (52) connected to the left end and the right end of the straight line segments in a welding mode, and one ends of the two small arc segments (52) are connected with large arc segments (53) in a welding mode.

9. The high temperature superconducting tokamak vacuum chamber body sector welding fixture of claim 8, wherein: the top of the bearing plate (325) is detachably provided with a positioning plate, the top of the positioning plate is provided with a limiting groove matched with the shape of the straight line section (51) or the small arc section (52) or the large arc section (53), and when the straight line section (51) or the small arc section (52) or the large arc section (53) is welded, the straight line section (51) or the small arc section (52) or the large arc section (53) is directly placed in the limiting groove with the corresponding shape, so that the preliminary limitation of the position can be completed.