CN213350862U - Deformation-preventing auxiliary tool for large-diameter thin-wall cylinder - Google Patents

Abstract

The utility model provides a utensil is assisted in shape of preapring for an unfavorable turn of events for major diameter thin wall barrel relates to machining technical field. The large-diameter thin-wall cylinder fixing device comprises a base and a top seat, wherein the base is suitable for being detachably connected with a chuck of a vertical lathe, the top of the base is suitable for supporting one end of a large-diameter thin-wall cylinder, a plurality of manual telescopic mechanisms are arranged at the top of the base and distributed annularly, telescopic parts of the manual telescopic mechanisms are suitable for being stretched and keeping a set length so as to support the inner side wall or the outer side wall of the large-diameter thin-wall cylinder, and the manual telescopic mechanisms are suitable for fixing the large-diameter thin-wall cylinder in the radial direction of the large-diameter thin-; the footstock is suitable for setting up the other end at major diameter thin wall barrel, can dismantle with the base through the footstock and be connected to press from both sides major diameter thin wall barrel in the middle of footstock and base. Compared with the prior art, the function of adjusting the jacking force of the large-diameter thin-wall cylinder body through the plurality of manual telescopic mechanisms distributed in the circumferential direction is realized.

Description

Deformation-preventing auxiliary tool for large-diameter thin-wall cylinder

Technical Field

The utility model relates to a machinery processing technology field particularly, relates to an utensil is assisted in shape of preapring for an unfavorable turn of events that is used for major diameter thin wall barrel.

Background

At present, the mainstream power generation mode is thermal power generation, a thermal power station generates power by using chemical energy released by combustion of fossil fuel, the thermal power generation not only consumes much energy, but also discharges a large amount of carbon dioxide, sulfur dioxide, nitric oxide and floating dust due to combustion of the adopted fossil fuel, so that the global temperature is increased, acid rain is frequently reduced, the ozone layer is damaged, and great threat and damage are caused to human beings and the environment. Therefore, nuclear power technology is more and more emphasized by the nation, nuclear energy released by nuclear fission reaction of nuclear fuel is utilized to generate electricity, and the nuclear energy is much larger than chemical energy, so that the nuclear power station consumes much less nuclear fuel than fossil fuel consumed by a thermal power plant with the same power, and meanwhile, environmental pollution is avoided.

In the nuclear reactor technology, equipment mechanisms are complex, the precision requirement is high, and the deformation trend is complex. The maximum diameter of the excircle of a machined part of the cock part is nearly 6m, the minimum wall thickness part is 11mm, the thin-wall parts are difficult to turn and deform greatly in the machining process. For the cylindrical part with larger diameter and thinner wall thickness, the rigidity of the cylindrical part is poor due to the thin wall, and the conventional clamp used in the turning process is easy to deform due to clamping force of improper clamping, so that the size precision and the shape precision of a product are influenced finally.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving anchor clamps in the current turning to a certain extent and lead to this section of thick bamboo class part to produce the problem of warping because of the improper clamp force of clamping easily.

In order to solve the above problem, the utility model provides an utensil is assisted in shape of preapring for an unfavorable turn of events for with major diameter thin wall barrel clamping in the nuclear reactor equipment on vertical lathe, include:

the base is suitable for being detachably connected with a chuck of the vertical lathe, the top of the base is suitable for supporting one end of the large-diameter thin-wall cylinder, a plurality of manual telescopic mechanisms are arranged at the top of the base and distributed annularly, telescopic parts of the manual telescopic mechanisms are suitable for being stretched and keeping a set length so as to prop against the inner side wall or the outer side wall of the large-diameter thin-wall cylinder, and the manual telescopic mechanisms are suitable for fixing the large-diameter thin-wall cylinder in the radial direction of the large-diameter thin-wall cylinder;

the top seat is suitable for being arranged at the other end of the large-diameter thin-wall cylinder body and detachably connected with the base through the top seat, so that the large-diameter thin-wall cylinder body is clamped between the top seat and the base.

Further, manual telescopic machanism includes jackscrew seat and at least one jackscrew, the jackscrew seat with the base is connected, the one end of jackscrew is manual telescopic machanism's pars contractilis, the other end of jackscrew with jackscrew seat threaded connection.

Further, the number of the jacking wire seats is even, the jacking wire seats are divided into a plurality of jacking wire seat groups, each jacking wire seat group comprises two jacking wire seats, and the two jacking wire seats of each jacking wire seat are symmetrically arranged relative to the axis of the large-diameter thin-wall cylinder.

Further, a plurality of mounting ring areas are concentrically arranged on the base, the jackscrew seat is detachably connected to any one of the mounting ring areas, and the number of the jackscrew seats is at least two.

Further, be provided with the first connecting hole ring group of multiunit on the base, every group first connecting hole ring group is including a plurality of first connecting holes that are the annular and distribute, every group a plurality of in the first connecting hole group first connecting hole is seted up and is corresponded installation ring district department, the jackscrew seat be suitable for through first screw with first connecting hole threaded connection, perhaps, the jackscrew seat be suitable for through the bolt with first connecting hole is connected.

Further, a groove structure is arranged on the base and comprises a first groove body, the number of the first groove body is equal to that of the first connecting hole ring groups, the first groove body is an annular groove body, the cross section of the first groove body is inverted T-shaped, each group of the first connecting hole ring groups is provided with a plurality of first connecting holes corresponding to the bottoms of the first groove body and at least one of the first groove body, a plurality of sliding blocks are connected in the first groove body in a sliding mode, and the sliding blocks are suitable for being connected with the top wire seats.

Further, the groove structure further comprises a second groove body, the second groove body is used for communicating the two adjacent first groove bodies, and the sliding block is suitable for being connected in the second groove body in a sliding mode.

Furthermore, the deformation-preventing auxiliary tool for the large-diameter thin-wall cylinder further comprises a stud bolt, one end of the stud bolt is suitable for being connected with the base, and the other end of the stud bolt is suitable for being connected with the top seat;

one end of the jackscrew is spherical.

Furthermore, the jackscrew seat comprises a jackscrew seat body and flanging plates arranged at two ends of the jackscrew seat body, and the flanging plates and the jackscrew seat body are of an integrated structure;

the jackscrew is arranged on the jackscrew seat body, the flanging plate is suitable for being detachably connected with the base, and the jackscrew seat body is of an arc-shaped plate-shaped structure.

Further, the deformation-preventing auxiliary tool for the large-diameter thin-wall cylinder is used for fixing a circular plate or a circular ring-shaped plate, at least two jackscrews are arranged on the jackscrew seat, at least two jackscrews are arranged at intervals in the vertical direction, and the edge of the circular plate or the circular ring-shaped plate is suitable for being held between the two jackscrews arranged at intervals in the vertical direction in the jackscrew seat;

or at least two limiting blocks are further arranged on the top wire seat and are arranged at intervals in the vertical direction, and the edges of the circular plate or the circular annular plate are suitable for being kept in the limiting blocks, arranged at intervals in the vertical direction, of the two top wire seats.

Compared with the prior art, the utility model provides a pair of a deformation of preapring for an unfavorable turn of events utensil is assisted for major diameter thin wall barrel has but not be limited to following technological effect:

one end of the large-diameter thin-wall barrel is vertically placed on the base, then the inner wall of the large-diameter thin-wall barrel is radially supported and limited through a plurality of manual telescopic mechanisms distributed in an annular mode, so that the large-diameter thin-wall barrel is radially fixed, the length of the manual telescopic mechanisms is adjusted in a manual adjusting mode to adjust the ejection fixing force of the large-diameter thin-wall barrel, and the large-diameter thin-wall barrel can be prevented from being deformed due to overlarge ejection fixing force. After the processing is accomplished, when needing to the upset of major diameter thin wall barrel, on arranging the footstock in the other end of major diameter thin wall barrel to be connected footstock and base, accomplish under the combined action of base and footstock and fix major diameter thin wall barrel in the axial, so far, major diameter thin wall barrel neither can radially play, also can not axially play, is protected between base, footstock and a plurality of manual telescopic machanism that distribute circumferentially, and it can with its upset this moment with the crane. The problem of among the current lathe work process anchor clamps lead to this section of thick bamboo class piece to produce the deformation in processing stage and upset stage easily because of the clamping force of clamping improper is solved.

Drawings

Fig. 1 is a schematic structural diagram of an anti-deformation auxiliary tool for a large-diameter thin-wall cylinder according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along the plane H-H in FIG. 1;

FIG. 3 is an enlarged view taken at A in FIG. 2;

fig. 4 is a schematic distribution diagram of a tank structure according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a jack screw base according to an embodiment of the present invention.

Description of the labeling:

1-base, 11-first connecting hole, 12-groove structure, 121-first groove, 1211-sliding block, 122-second groove, 2-jackscrew seat, 21-jackscrew seat body, 211-jackscrew, 22-flanging plate, 23-reinforcing rib, 3-footstock, 4-stud and 5-manual telescopic mechanism.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Also, in the drawings, the Z-axis represents a vertical, i.e., up-down position, and a positive direction of the Z-axis (i.e., an arrow direction of the Z-axis) represents up, and a negative direction of the Z-axis (i.e., a direction opposite to the positive direction of the Z-axis) represents down; in the drawings, the X-axis represents the longitudinal direction of the horizontal plane, perpendicular to the Z-axis, and the positive direction of the X-axis (i.e., the arrow direction of the X-axis) represents the front side, and the negative direction of the X-axis (i.e., the direction opposite to the positive direction of the X-axis) represents the rear side; in the drawings, Y represents a horizontal direction, while being perpendicular to the Z-axis and the X-axis, and a positive direction of the Y-axis (i.e., an arrow direction of the Y-axis) represents a right side, and a negative direction of the Y-axis (i.e., a direction opposite to the positive direction of the Y-axis) represents a left side; the plane formed by the X axis and the Z axis is a vertical plane.

It should also be noted that the foregoing Z-axis, Y-axis, and X-axis representations are merely intended to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

The terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or an implicit indication of the number of technical features indicated. Thus, features defined as "first," "second," "third," and "fourth" may explicitly or implicitly include at least one of the features.

Referring to fig. 1 to 4, the present embodiment provides an anti-deformation auxiliary tool for a large-diameter thin-walled cylinder, which is used for clamping the large-diameter thin-walled cylinder in a nuclear reactor device on a vertical lathe, and comprises a base 1 and a top seat 3.

The top of base 1 is suitable for the one end that supports major diameter thin wall barrel, and the top of base 1 is provided with a plurality of manual telescopic machanism 5, and a plurality of manual telescopic machanism 5 are the annular and distribute, and the one end of manual telescopic machanism 5 is suitable for the extension and retraction and keeps setting for length, and the one end (the pars contractilis) of manual telescopic machanism 5 is suitable for the inside wall or the lateral wall that withstands major diameter thin wall barrel, and manual telescopic machanism 5 is suitable for radially fixing major diameter thin wall barrel at major diameter thin wall barrel.

The top seat 3 is suitable for supporting the other end of the large-diameter thin-wall cylinder, and the top seat 3 is suitable for being connected with the base 1 and fixing the large-diameter thin-wall cylinder in the axial direction of the large-diameter thin-wall cylinder.

Here, when turning the large-diameter thin-walled cylinder, the base 1 is fixed to a lathe first, the base 1 may be clamped and fixed to a chuck of the lathe first, or the base 1 may be fixed by fitting a t-shaped groove of the chuck of the lathe to a bolt. It should be noted that the fixing manner of the base 1 and the lathe is a conventional technique in the technical field of turning, and therefore, how to fix the base 1 to the lathe is not described herein again. After the base 1 is fixed with a lathe, one end of the large-diameter thin-wall cylinder is vertically placed on the base 1, then the inner wall of the large-diameter thin-wall cylinder is supported and limited through a plurality of manual telescopic mechanisms distributed in an annular mode, so that the large-diameter thin-wall cylinder is fixed in the radial direction, the length of the manual telescopic mechanisms is adjusted in a manual adjusting mode to adjust the ejection fixing force of the large-diameter thin-wall cylinder, and the large-diameter thin-wall cylinder is prevented from being deformed due to the fact that the ejection fixing force is too large.

After the processing is accomplished, when needing to the upset of major diameter thin wall barrel, on arranging the footstock 3 in the other end of major diameter thin wall barrel, and be connected footstock 3 and base 1, accomplish under the combined action of base 1 and footstock 3 and fix major diameter thin wall barrel in the axial, so far, major diameter thin wall barrel neither can radially drunkenness, also can not axial drunkenness, be protected between base 1, footstock 3 and a plurality of axial distribution's manual telescopic machanism, it can to overturn it with the crane this moment, in the upset process, major diameter thin wall barrel can not scratched, also can not warp.

Preferably, in order to facilitate the independent movement of the base 1, the independent movement of the top seat 3 and the movement of the base 1 and the top seat 3 at two ends of the large-diameter thin-wall cylinder fixed in the axial direction, lifting lugs may be arranged on the base 1 and the top seat 3, and the crane can complete the movement of the base 1 and the top seat 3 through the direct action of the lifting lugs.

It should be noted that "one end of the manual telescopic mechanism is adapted to abut against the inner side wall or the outer side wall of the large-diameter thin-walled cylinder" means: when the manual telescopic mechanism is used for fixing the large-diameter thin-wall cylinder, the manual telescopic mechanism can be positioned inside the large-diameter thin-wall cylinder, and at the moment, one end of the manual telescopic mechanism is propped against the inner wall of the large-diameter thin-wall cylinder to fix the large-diameter thin-wall cylinder in the radial direction; the manual telescopic mechanism can also be positioned outside the large-diameter thin-wall cylinder, and one end of the manual telescopic mechanism is propped against the outer wall of the large-diameter thin-wall cylinder to fix the large-diameter thin-wall cylinder in the radial direction.

Referring to fig. 2, preferably, the base 1 and the top seat 3 may be an annular base 1 and an annular top seat 3 as a whole, and since the large-diameter thin-wall cylinder is in the shape of a circular cylinder, the base 1 is arranged into the annular base and the top seat 3 is arranged into the annular top seat, so that the use of materials is reduced and the cost is reduced while the two ends of the large-diameter thin-wall cylinder are supported, and meanwhile, since the middle parts of the annular base and the annular top seat are empty, the subsequent turning processing of the large-diameter thin-wall cylinder is facilitated.

Referring to fig. 3, the manual telescoping mechanism 5 includes a jackscrew base 2 and at least one jackscrew 211, the jackscrew base 2 is connected with the base 1, two ends of the jackscrew 211 penetrate through the jackscrew base 2, and the jackscrew 211 is in threaded connection with the jackscrew base 2, wherein one end of the jackscrew 211 is one end of the manual telescoping mechanism.

Here, the tightening force of the jackscrew 211 to the large-diameter thin-walled cylinder is adjusted by screwing the jackscrew 211, thereby preventing the tightening force from being too large. Here, the "one end of the manual retracting mechanism" refers to one end of the jack screw 211.

Referring to fig. 2, preferably, the number of the jackscrew seats 2 is even, and the jackscrews 211 in every two jackscrew seats 2 are suitable for being symmetrically distributed on two sides of the axis of the large-diameter thin-wall cylinder.

Here, an even number of the jackscrew seats 2 are provided, and every two jackscrew seats 2 are in one group, and the jackscrews 211 in the two jackscrew seats 2 in each group are symmetrical about the axis of the large-diameter thin-wall cylinder, so that the fixing force of the two jackscrews 211 in each group to the large-diameter thin-wall cylinder is ensured to be on one diameter of the large-diameter thin-wall cylinder, and the fixing strength to the processed large-diameter thin-wall cylinder can be ensured.

Preferably, the jackscrew seat 2 can be dismantled with base 1 and be connected, is provided with a plurality of collar regions on the base 1 with one heart, and the jackscrew seat 2 can be dismantled and connect in arbitrary collar region department, and a plurality of jackscrew seats 2 are suitable for the annular that distributes for different diameters on base 1 promptly, and a plurality of jackscrew seats 2 can be the annular on the concentric circle of different diameters on base 1 and distribute promptly, and the quantity that the jackscrew seat 2 was arranged is two at least.

Here, through the removable connection of jackscrew seat with the base for jackscrew seat 2 can be installed in suitable position on base 1 according to the major diameter thin wall barrel of different diameter sizes, and simultaneously, the quantity of jackscrew seat 2 can be adjusted according to the major diameter thin wall barrel diameter size of processing.

Referring to fig. 2 and 3, preferably, a plurality of first connection hole ring sets are disposed on the base 1, each first connection hole ring set includes a plurality of first connection holes 11 distributed in an annular shape, a plurality of first connection holes 11 in each first connection hole set are opened at corresponding installation ring regions, and the jackscrew base 2 is adapted to be in threaded connection with the first connection holes through first screws, or the jackscrew base 2 is adapted to be connected with the first connection holes 11 through bolts.

Referring to fig. 4, preferably, a groove structure 12 is formed on the base 1, the groove structure 12 includes a first groove 121, the number of the first groove 121 is the same as that of the first connection hole ring groups, the first groove 121 is an annular groove, the cross section of the first groove 121 is in an inverted T shape, the plurality of first connection holes 11 in each first connection hole ring group are formed in the bottom of the corresponding first groove 121, a plurality of sliders 1211 are slidably connected in at least one first groove 121, and the sliders 1211 is adapted to be connected to the top thread seat 2.

The first groove 121 is formed in an inverted T-shape in cross section to prevent the slider 1211 from being separated from the first groove 121.

Here, when the manual telescopic mechanism is installed, the top thread seat 2 is connected to the slider 1211, and then the top thread seat 2 is connected to the first connection hole 11 at the bottom of the first groove 121, thereby completing the fixing of the top thread seat 2 on the base 1. When the circumferential position of the jackscrew seat 2 needs to be changed, the jackscrew seat 2 is separated from the first connecting hole 11, then slides in the first groove body 121 until reaching a proper position, and then the jackscrew seat 2 is connected with the first connecting hole 11 at the position, so that the change of the position of the jackscrew seat 2 in the circumferential direction is completed, and the device is quick and efficient.

Referring to fig. 4, the slot structure 12 preferably further comprises a second slot 122, the second slot 122 is used for communicating two adjacent first slots 121, wherein the sliding block 1211 is adapted to be slidably connected in the second slot 122.

Here, the first slots 121 are communicated with each other through the second slot 122, so that the slide 1211 can slide in the first slot 121 and the second slot 122, and the jackscrew seat 2 can move in the other first slot 121 through the second slot 122, thereby realizing arbitrary adjustment of the position of the jackscrew seat 2.

Preferably, the deformation-preventing auxiliary tool for the large-diameter thin-wall cylinder further comprises a stud bolt 4, one end of the stud bolt 4 is suitable for being connected with the base 1, and the other end of the stud bolt 4 is suitable for being connected with the top seat 3.

Here, the base 1 and the top seat 3 are connected together by the stud bolts 4, and the large-diameter thin-wall cylinder is axially fixed.

One end of the jackscrew 211 is preferably spherical in shape so that the one end of the jackscrew 211 will not scratch the large-diameter thin-wall cylinder when it is pressed against the inner wall or the outer wall of the large-diameter thin-wall cylinder.

Referring to fig. 5, preferably, the jackscrew seat 2 includes a jackscrew seat body 21 and folding plates 22 disposed at two ends of the jackscrew seat body 21, and the folding plates 22 and the jackscrew seat body 21 are of an integrated structure; the jackscrew 211 is arranged on the jackscrew seat body 21, the flanging plate 22 is suitable for being detachably connected with the base 1, and the jackscrew seat body 21 is of an arc-shaped plate-shaped structure.

Here, the structure similar to the C shape of the jackscrew seat body 21 and the hemming plates 22 at the two ends thereof, the jackscrew seat body 21 provides a carrier for the jackscrew 211, the hemming plates 22 are used for being connected with the base 1, and the hemming plates 22 and the jackscrew seat body 21 are integrated, so that the production cost can be reduced, the weight can be reduced, and the power consumption of the lathe can be reduced. Because the fixed barrel spare, set up jackscrew seat body 21 as arc platelike structure, it fits with major diameter thin wall barrel better.

Preferably, the deformation-preventing auxiliary tool for the large-diameter thin-wall cylinder body can also be used for fixing a circular plate or a circular ring-shaped plate, at least two jackscrews 211 are arranged on the jackscrew seat 2, at least two jackscrews 211 are arranged at intervals in the vertical direction, and the edge of the circular plate or the circular ring-shaped plate is suitable for being held between the two jackscrews 211 arranged at intervals in the vertical direction in the jackscrew seat 2; or, still be provided with two at least stoppers on the jackscrew seat 2, two at least stoppers are the interval setting in vertical direction, and the edge of circular slab or circular annular board is suitable for keeping in two stoppers that are the interval setting in vertical direction in jackscrew seat 2.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Without departing from the spirit and scope of the present disclosure, those skilled in the art can make various changes and modifications, which will fall into the scope of the present disclosure.

Claims (10)

1. The utility model provides a utensil is assisted in shape of preapring for an unfavorable turn of events for with major diameter thin wall barrel clamping in nuclear reactor equipment on vertical lathe, its characterized in that includes:

the vertical lathe comprises a base (1) and a plurality of manual telescopic mechanisms (5), wherein the base (1) is suitable for being detachably connected with a chuck of the vertical lathe, the top of the base (1) is suitable for supporting one end of the large-diameter thin-walled cylinder, the plurality of manual telescopic mechanisms (5) are distributed annularly, telescopic parts of the manual telescopic mechanisms (5) are suitable for being stretched and keeping a set length so as to prop against the inner side wall or the outer side wall of the large-diameter thin-walled cylinder, and the manual telescopic mechanisms (5) are suitable for fixing the large-diameter thin-walled cylinder in the radial direction of the large-diameter thin-walled cylinder;

the top seat (3) is suitable for being arranged at the other end of the large-diameter thin-wall cylinder body and detachably connected with the base (1) through the top seat (3), so that the large-diameter thin-wall cylinder body is clamped between the top seat (3) and the base (1).

2. The auxiliary tool for preventing deformation of the large-diameter thin-wall cylinder body as claimed in claim 1, wherein the manual telescopic mechanism (5) comprises a jackscrew base (2) and at least one jackscrew (211), the jackscrew base (2) is connected with the base (1), one end of the jackscrew (211) is a telescopic part of the manual telescopic mechanism (5), and the other end of the jackscrew (211) is in threaded connection with the jackscrew base (2).

3. The deformation prevention aid for a large-diameter thin-walled cylinder according to claim 2, characterized in that the number of the wire holder (2) is an even number, the plurality of wire holders (2) are divided into a plurality of wire holder groups, each wire holder group comprises two wire holders (2), and the two wire holders (2) of each wire holder group are symmetrically arranged about the axis of the large-diameter thin-walled cylinder.

4. The deformation prevention assistive device for the large-diameter thin-walled cylinder according to claim 2, characterized in that a plurality of mounting ring areas are concentrically arranged on the base (1), the wire ejecting seat (2) is detachably connected at any one of the mounting ring areas, and the number of the wire ejecting seats (2) is at least two.

5. The auxiliary tool for preventing deformation of the large-diameter thin-wall cylinder body as claimed in claim 4, wherein a plurality of first connection hole ring sets are arranged on the base (1), each first connection hole ring set comprises a plurality of first connection holes (11) distributed in an annular shape, a plurality of first connection holes (11) in each first connection hole set are opened at positions corresponding to the installation ring region, and the jackscrew seat (2) is adapted to be in threaded connection with the first connection holes through first screws, or the jackscrew seat (2) is adapted to be connected with the first connection holes (11) through bolts.

6. The deformation-preventing auxiliary tool for the large-diameter thin-wall cylinder body as claimed in claim 5, wherein a groove body structure (12) is formed in the base (1), the groove body structure (12) comprises a first groove body (121), the number of the first groove body (121) is the same as that of the first connection hole ring groups, the first groove body (121) is an annular groove body, the cross section of the first groove body (121) is inverted T-shaped, a plurality of first connection holes (11) in each first connection hole ring group are formed in the bottom of the corresponding first groove body (121), at least one first groove body (121) is connected with a plurality of sliding blocks (1211) in a sliding mode, and the sliding blocks (1211) are suitable for being connected with the wire ejecting seat (2).

7. The deformation prevention aid for the large-diameter thin-walled cylinder according to claim 6, wherein the groove structure (12) further comprises a second groove (122), the second groove (122) is used for communicating two adjacent first grooves (121), and the sliding block (1211) is suitable for being slidably connected into the second groove (122).

8. The deformation aid for large-diameter thin-walled cylinder according to claim 2, characterized by further comprising a stud bolt (4), wherein one end of the stud bolt (4) is adapted to be connected with the base (1) and the other end thereof is adapted to be connected with the top seat (3);

one end of the jackscrew (211) is spherical.

9. The auxiliary tool for preventing deformation of the large-diameter thin-wall cylinder body as claimed in claim 2, wherein the jackscrew seat (2) comprises a jackscrew seat body (21) and flanging plates (22) arranged at two ends of the jackscrew seat body (21), and the flanging plates (22) and the jackscrew seat body (21) are of an integrated structure;

the jackscrew (211) is arranged on the jackscrew seat body (21), the flanging plate (22) is suitable for being detachably connected with the base (1), and the jackscrew seat body (21) is of an arc-shaped plate-shaped structure.

10. Deformation prevention aids for large diameter thin walled cylinders according to any of claims 2 to 9 for fixing circular or circular ring shaped plates,

at least two jackscrews (211) on the jackscrew seat (2) are arranged, at least two jackscrews (211) are arranged at intervals in the vertical direction, and the edge of the circular plate or the circular annular plate is suitable for being held between the two jackscrews (211) arranged at intervals in the vertical direction in the jackscrew seat (2);

or at least two limiting blocks are further arranged on the top wire seat (2), the limiting blocks are arranged at intervals in the vertical direction, and the edges of the circular plate or the circular annular plate are suitable for being held in the limiting blocks, arranged at intervals in the vertical direction, of two of the top wire seats (2).

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