Torsion-resistant clamping device for flange machining

Abstract

The invention relates to the field of flange machining, in particular to an anti-torsion clamping device for flange machining, which comprises a bearing frame, a driving push rod is detachably connected in the bearing frame, and the driving end of the driving push rod is respectively connected with an adjusting mechanism and a fixing mechanism; the fixing mechanism comprises a positioning cap fixedly connected to the top end of the bearing frame, a plurality of arc grooves are formed in the peripheral side of the positioning cap, a transfer component and a movable frame are arranged between the driving push rod and the positioning cap, an arc plate is fixedly connected to the outer wall of the movable frame, and the arc plate is fixedly connected with a rubber plate through an inner hole and a reset rope. According to the device, the front face and the back face of a flange can be effectively limited, the clamping effect of the flange cannot be affected by a protruding pipe body, the flange can be effectively prevented from twisting in the machining process, and the flange can be better protected by limiting the flange through elastic potential energy.

Description

Technical Field

[0001] The invention relates to the field of flange processing, in particular to an anti-torsion clamping device for flange processing. Background Art

[0002] Flanges are parts that connect shafts to each other. They are used to connect pipe ends. They are also used for equipment inlets and outlets. There are many types of flanges, such as flat welding flanges, butt welding flanges, socket welding flanges, loose flanges and threaded flanges. During flange processing, the surface smoothness of the flange needs to be polished. To prevent the flange from shaking during polishing, a clamping device is set at the flange processing station to fix the flange. When single-sided polishing of the flange is performed, it is only necessary to prevent the flange from moving or rotating on the workbench. When the existing clamp is used to polish the front and back sides of an ordinary flange, it is only necessary to reverse the flange for repositioning. However, when dealing with a neck flange, the protruding tube body will affect the clamping effect of the flange. In order to resist torsion during polishing of the neck flange, we design an anti-torsion clamping device for flange processing. Summary of the invention

[0003] In view of the problem that the neck flange is not easy to limit when the anti-torsion clamping device of flange processing exists in the above-mentioned or prior art, the present invention is proposed.

[0004] Therefore, an object of the present invention is to provide an anti-torsion clamping device for flange machining.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: an anti-torsion clamping device for flange processing, comprising a carrier frame, a driving push rod detachably connected inside the carrier frame, the driving end of the driving push rod is respectively connected to an adjustment mechanism and a fixing mechanism; the fixing mechanism comprises a positioning cap fixedly connected to the top of the carrier frame, a plurality of arc grooves are opened on the circumference of the positioning cap, a transfer component and a movable frame are arranged between the driving push rod and the positioning cap, an arc plate is fixedly connected to the outer wall of the movable frame, the arc plate is fixedly connected to a rubber plate through an inner hole and a reset rope, and a plurality of barrier strips are arranged between the arc groove and the rubber plate; the transfer component comprises a push block connected to the driving end of the driving push rod, the push block is connected to a top cover through a spring, and the outer wall of the top cover is in contact with the inner wall of the movable frame.

[0006] As a preferred solution of the anti-torsion clamping device for flange processing of the present invention, there are multiple movable frames, which are distributed in a circular array inside the positioning cap, and through holes are provided at both upper and lower ends of the multiple movable frames, and a reset ring is provided inside the through hole, and the top of the movable frame is slidably connected to the positioning cap.

[0007] As a preferred solution of the anti-torsion clamping device for flange processing of the present invention, the top of the positioning cap is arc-shaped, the number of the arc grooves is multiple, and the multiple arc grooves are distributed in a circular array around the positioning cap, and the cross-section of the arc groove is "S"-shaped.

[0008] As a preferred solution of the anti-torsion clamping device for flange processing of the present invention, the transfer component also includes a conical surface opened at the end of the push block away from the driving push rod, the top cover is provided with a contact surface corresponding to the conical surface, and there is a gap between the conical surface and the contact surface.

[0009] As a preferred solution of the anti-torsion clamping device for flange processing of the present invention, the fixing mechanism also includes a first positioning hole and a second positioning hole opened on the top of the carrier frame, a circular groove is opened at the bottom of the first positioning hole, a positioning box is slidably connected inside the first positioning hole, a clamping rubber sheet is provided on the side of the positioning box close to the positioning cap, a ring box is fixedly connected to the bottom of the positioning box, an extrusion airbag is provided on the top of the ring box, an expanded hole is opened in the middle of the second positioning hole, a pin rod is slidably connected inside the second positioning hole, the pin rod is located in the expanded hole and is connected to an anti-slip ring, and a follower ring is connected to the bottom of the pin rod.

[0010] As a preferred solution of the anti-torsion clamping device for flange processing of the present invention, wherein: the cross-section of the first positioning hole is arc-shaped, the first positioning hole is located between the second positioning hole and the positioning cap, the cross-section of the second positioning hole is circular, the number of the first positioning hole and the second positioning hole are both multiple, and are distributed in a circular array on the supporting frame.

[0011] As a preferred solution of the anti-torsion clamping device for flange processing of the present invention, the adjustment mechanism includes multiple horizontal rods connected to the driving end of the driving push rod, the other end of the horizontal rod is sleeved with a horizontal sleeve, and the top of the horizontal sleeve is fixedly connected to a driven rod.

[0012] As a preferred solution of the anti-torsion clamping device for flange processing of the present invention, wherein: a plurality of the horizontal rods are distributed in a circular array around the driving end of the driving push rod, the top of the driven rod is fitted with the bottom of the ring box, and the inclination angle between the driven rod and the horizontal sleeve is ninety degrees.

[0013] As a preferred solution of the anti-torsion clamping device for flange processing of the present invention, the adjustment mechanism also includes a side hole arranged on the supporting frame, a bottom sleeve is slidably connected inside the side hole, a bottom rod is slidably connected inside the bottom of the bottom sleeve, the bottom rod is fixedly connected to a bracket, and the bracket is fitted with the outer wall of the driven rod through the hole.

[0014] As a preferred solution of the anti-torsion clamping device for flange processing of the present invention, the cross-section of the side hole is arc-shaped, the cross-sections of the bottom sleeve and the bottom rod are both circular, and the bottom of the bracket fits with the top of the horizontal sleeve.

[0015] The beneficial effects of the anti-torsion clamping device for flange processing of the present invention are as follows: the device can effectively limit the front and back sides of the flange, the clamping effect of the flange will not be affected by the protruding tube body, and the flange can be effectively prevented from twisting during the processing. The use of elastic potential energy to limit the flange can better protect it. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 Overall schematic diagram of the anti-torsion clamping device for flange processing.

[0018] Figure 2 Schematic diagram of the internal structure of the anti-torsion clamping device for flange processing.

[0019] Figure 3 Partial cross-sectional view of the anti-twist clamping device machined for the flange.

[0020] Figure 4 Schematic diagram of the fixing mechanism of the anti-torsion clamping device for flange processing.

[0021] Figure 5 Schematic diagram of the fixing mechanism part of the anti-torsion clamping device for flange processing.

[0022] Figure 6 Schematic diagram of the transfer components of the anti-torsion clamping device for flange processing.

[0023] Figure 7 Schematic diagram of the adjustment mechanism of the anti-torsion clamping device for flange processing.

[0024] In the figure: 100, bearing frame; 200, driving push rod; 300, adjusting mechanism; 301, horizontal rod; 302, horizontal sleeve; 303, driven rod; 304, side hole; 305, bottom sleeve; 306, bottom rod; 307, bracket; 308, channel; 400, fixing mechanism; 401, positioning cap; 402, arc groove; 403, transfer component; 404, movable frame; 405, arc plate; 406, inner hole; 407, reset rope; 408, rubber Plate; 409, barrier strip; 410, through hole; 411, reset ring; 412, first positioning hole; 413, second positioning hole; 414, circular groove; 415, positioning box; 416, clamping rubber sheet; 417, ring box; 418, extrusion airbag; 419, expansion hole; 420, pin rod; 421, anti-slip ring; 422, follower ring; 403a, push block; 403b, spring; 403c, top cover; 403d, cone surface; 403e, contact surface. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] Example 1, reference Figure 1 to Figure 7 , which is the first embodiment of the present invention, and provides an anti-torsion clamping device for flange processing, which can achieve the anti-torsion clamping effect of the anti-torsion clamping device for flange processing, and comprises a carrier frame 100, a driving push rod 200 is detachably connected inside the carrier frame 100, and the driving end of the driving push rod 200 is respectively connected to an adjusting mechanism 300 and a fixing mechanism 400; Specifically, the setting of the carrier frame 100 can effectively limit the driving push rod 200. The driving push rod 200 is connected to the carrier frame 100 by bolts, and can be directly disassembled and repaired by a wrench. The setting of the adjustment mechanism 300 can effectively adjust the fixing mechanism 400, and can be selected according to the direction of the high-neck flange, so that the high-neck flange can be effectively limited during the polishing process.

[0027] Reference Figure 2 to Figure 6The fixing mechanism 400 includes a positioning cap 401 fixedly connected to the top of the carrier 100, and a plurality of arc grooves 402 are provided on the periphery of the positioning cap 401. A transfer component 403 and a movable frame 404 are provided between the driving push rod 200 and the positioning cap 401. An arc plate 405 is fixedly connected to the outer wall of the movable frame 404. The arc plate 405 is fixedly connected to a rubber plate 408 through an inner hole 406 and a reset rope 407. A plurality of barrier strips 409 are provided between the arc groove 402 and the rubber plate 408. The barrier strips 409 can generate vibration when the rubber plate 408 is reset. This vibration can effectively vibrate out the metal powder attached to the surface of the rubber plate 408, because at this time the metal powder is only attached to the surface of the rubber plate 408, and it is more convenient to vibrate it off, so as to avoid damaging the flange in the subsequent clamping work; Furthermore, the setting of the positioning cap 401 can better place the flange initially, and can be directly inserted into the positioning cap 401 during the installation of the flange. The top of the positioning cap 401 is arc-shaped, which can better place the flange and limit it more quickly when grinding and polishing the flange. The setting of the arc groove 402 can limit the components inside it. The arc groove 402 is "S"-shaped, which is convenient for adapting to the components inside it. The setting of the transfer component 403 can effectively drive the movable frame 404 to move. The movable frame 404 will rise during the rise of the transfer component 403. The movable frame 404 is squeezed during the rise of the movable frame 404, so as to better limit the flange and prevent the flange from twisting during the processing. The movable frame 404 is set in a "factory" shape. It can effectively adapt to the transfer component 403. The movable frame 404 is made of metal, and the arc plate 405 is made of rigid material. The setting of the arc plate 405 can better limit the rubber plate 408, and the setting of the rubber plate 408 can effectively limit the flange.

[0028] The transfer component 403 includes a push block 403 a connected to the driving end of the driving push rod 200 . The push block 403 a is connected to a top cover 403 c via a spring 403 b . The outer wall of the top cover 403 c is in contact with the inner wall of the movable frame 404 .

[0029] Among them, the driving push rod 200 can be an electric telescopic rod. The setting of the driving push rod 200 can effectively drive the transfer component 403 to move up and down during use. The push block 403a is directly connected to the driving push rod 200, and can effectively drive the push block 403a to move during use. The push block 403a is fixedly connected to the spring 403b. The spring 403b will accumulate elastic potential energy during the movement. The elastic potential energy is used to limit the flange, which can effectively reduce the damage to the flange and facilitate better limiting the flange to avoid damage to the flange due to excessive extrusion. The setting of the top cover 403c can effectively utilize the elastic potential energy of the spring 403b.

[0030] Reference Figure 2 to Figure 6There are multiple movable frames 404, which are distributed in a circular array inside the positioning cap 401. The placement of the circular array can better limit the inner wall of the flange, and can better fix the inner wall of the flange during use to prevent it from twisting during grinding and polishing. Through holes 410 are provided at the upper and lower ends of the multiple movable frames 404, and a reset ring 411 is provided inside the through hole 410. The top of the movable frame 404 is slidably connected to the positioning cap 401.

[0031] Reference Figure 4 The setting of the movable frame 404 can effectively drive the arc plate 405 and the rubber plate 408 to move, so as to better limit the flange. The setting of the through hole 410 can effectively limit the reset ring 411. The reset ring 411 is woven from elastic fibers and can effectively drive the movable frame 404 to reset during use.

[0032] Reference Figure 2 to Figure 6 The top of the positioning cap 401 is arc-shaped, and the number of arc grooves 402 is multiple. The multiple arc grooves 402 are distributed in a circular array around the positioning cap 401. The cross section of the arc groove 402 is "S"-shaped, which can be adapted to the rubber plate 408 during use. The rubber plate 408 is designed in an "S" shape to prevent the flange from twisting to the left or right at the same time, so as to better limit the flange. The transfer component 403 also includes a conical surface 403d provided at the end of the push block 403a away from the driving push rod 200, and the top cover 403c is provided with a contact surface 403e corresponding to the conical surface 403d. There is a gap between the conical surface 403d and the contact surface 403e. The setting of the conical surface 403d and the contact surface 403e can effectively protect the spring 403b and prevent the elasticity from being damaged due to excessive contraction. When the conical surface 403d contacts the contact surface 403e, the flange is limited by the extrusion force of the conical surface 403d and the contact surface 403e.

[0033] During operation, the driving push rod 200 is changed to an extended state. At this time, the driving end of the driving push rod 200 is extended, and the driving push rod 200 drives the push block 403a to rise, and the push block 403a drives the spring 403b to contract. The spring 403b contracts to accumulate elastic potential energy, and the elastic potential energy drives the top cover 403c to move upward, and the top cover 403c drives the movable frame 404 to translate. The translation of the movable frame 404 drives the arc plate 405 and the rubber plate 408 to clamp the inner wall of the pipe fitting. At the same time, the driven rod 303 drives the ring box 417 to rise, and the rising of the ring box 417 drives the positioning box 415 to rise. The rising of the positioning box 415 makes the extrusion airbag 418 squeezed and contracted, thereby driving the air pressure inside the ring box 417 and the positioning box 415 to increase, and driving the clamping rubber plate 408 to bulge to fix the outer wall of the pipe fitting. At this time, the fixation of the pipe body part of the high neck flange can be completed.

[0034] In summary, the setting of the driving push rod 200 can effectively drive the transfer component 403 to move up and down during use. The push block 403a is directly connected to the driving push rod 200, and can effectively drive the push block 403a to move during use. The push block 403a is fixedly connected to the spring 403b. The spring 403b will accumulate elastic potential energy during the movement, and the elastic potential energy is used to limit the flange.

[0035] Example 2, reference Figure 1 to Figure 6 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides an anti-torsion clamping device for flange processing, which solves the problem of the anti-torsion clamping device for flange processing. It includes a fixing mechanism 400 and also includes a first positioning hole 412 and a second positioning hole 413 opened on the top of the carrier 100. A circular groove 414 is opened at the bottom of the first positioning hole 412. A positioning box 415 is slidably connected inside the first positioning hole 412. A clamping rubber sheet 416 is provided on the side of the positioning box 415 close to the positioning cap 401. A ring box 417 is fixedly connected to the bottom of the positioning box 415. An extrusion airbag 418 is provided on the top of the ring box 417. An expanded hole 419 is opened in the middle of the second positioning hole 413. A pin rod 420 is slidably connected inside the second positioning hole 413. The pin rod 420 is located in the expanded hole 419 and is connected to an anti-slip ring 421. The bottom of the pin rod 420 is connected to a follower ring 422.

[0036] Furthermore, the setting of the first positioning hole 412 and the second positioning hole 413 can effectively limit the positioning box 415 and the pin 420 therein. The positioning box 415 is slidably connected to the first positioning hole 412, and when the positioning box 415 is not supported, the first positioning hole 412 can effectively prevent the positioning box 415 from falling off the first positioning hole 412. The clamping rubber sheet 416 is made of elastic material. During operation, when the internal pressure of the positioning box 415 on one side increases, the clamping rubber sheet 416 will produce a bulge, which can effectively limit the outer wall of the flange. The cross-section of the expansion hole 419 is circular, and the setting of the expansion hole 419 can effectively limit the anti-slip ring 421. The setting of the anti-slip ring 421 prevents the pin 420 connected thereto from detaching from the second positioning hole 413 in a suspended state. The setting of the follower ring 422 can drive multiple pins 420 to move simultaneously.

[0037] Reference Figure 2 to Figure 5 The cross section of the first positioning hole 412 is arc-shaped. The first positioning hole 412 is located between the second positioning hole 413 and the positioning cap 401. The cross section of the second positioning hole 413 is circular. The number of the first positioning hole 412 and the second positioning hole 413 are both multiple, and are distributed in a circular array on the carrier 100.

[0038] Among them, the first positioning hole 412 is mainly set to accommodate a component that limits the outer part of the tube body of the high-neck flange, and the second positioning hole 413 is mainly set to accommodate a component that limits the hole body of the flange plate. When the hole body of the flange plate is limited, the flange body cannot be twisted, which is more convenient during the polishing and grinding process.

[0039] The rest of the structure is the same as that of Example 1.

[0040] In summary, the setting of the first positioning hole 412 and the second positioning hole 413 can effectively limit the positioning box 415 and the pin 420 inside them. The positioning box 415 is slidingly connected to the first positioning hole 412. The setting of the first positioning hole 412 is mainly to accommodate the component that limits the outer part of the tube body of the high-neck flange. The setting of the second positioning hole 413 is mainly used to place the component that limits the hole body of the flange.

[0041] Example 3, reference Figure 1 to Figure 7 , which is the third embodiment of the present invention, and is different from the previous embodiment in that the adjustment mechanism 300. This embodiment provides an anti-torsion clamping device for flange machining, which solves the fixing problem when the upper and lower surfaces of the flange are switched during flange polishing and grinding. It includes a plurality of horizontal rods 301 connected to the driving end of the driving push rod 200, and the other end of the horizontal rod 301 is sleeved with a horizontal sleeve 302, and the top of the horizontal sleeve 302 is fixedly connected with a driven rod 303. The plurality of horizontal rods 301 are distributed in a circular array around the driving end of the driving push rod 200. This arrangement can better utilize the thrust from the driving push rod 200, and the top of the driven rod 303 fits with the bottom of the ring box 417, which can better drive the ring box 417 and the components on the top of the ring box 417 to move, and the inclination angle between the driven rod 303 and the horizontal sleeve 302 is ninety degrees.

[0042] Among them, the horizontal rod 301 and the horizontal sleeve 302 are both made of metal, and the cross-section of the horizontal rod 301 is circular. The setting of the horizontal rod 301 can effectively limit the horizontal sleeve 302. The driven rod 303 and the horizontal sleeve 302 are perpendicular to each other, which can better enable the driven rod 303 to receive the thrust from the horizontal sleeve 302, thereby better limiting the flange.

[0043] The adjustment mechanism 300 further includes a side hole 304 disposed on the carrier 100, a bottom sleeve 305 is slidably connected inside the side hole 304, a bottom rod 306 is slidably connected inside the bottom of the bottom sleeve 305, a bracket 307 is fixedly connected to the bottom rod 306, and the bracket 307 is in contact with the outer wall of the driven rod 303 through a hole 308. The cross section of the side hole 304 is arc-shaped, the cross sections of the bottom sleeve 305 and the bottom rod 306 are both circular, and the bottom of the bracket 307 is in contact with the top of the horizontal sleeve 302.

[0044] Furthermore, the side hole 304 can effectively limit the bottom sleeve 305, and the setting of the bottom sleeve 305 can effectively limit the bottom rod 306 at its bottom. At the same time, the bottom sleeve 305 can drive the bottom rod 306 to move during the movement, so that the bottom sleeve 305 can effectively drive the bracket 307 located at its bottom during the movement. The bracket 307 is made of metal. The setting of the bracket 307 can transmit the force of the bottom rod 306 to the driven rod 303. The channels 308 are distributed in a circular array on the bracket 307, so that the bracket 307 can drive the channels 308 to move during the rotation, and the channels 308 can drive the driven rod 303 to move during the movement. The movement of the driven rod 303 drives the horizontal sleeve 302 at its bottom to move. After the driven rod 303 moves, its lifting components can be replaced. When it moves outward, it moves from the positioning box 415 to the follower ring 422, so that the pipe body fixing swivel of the high neck flange is fixed to the flange plate of the high neck flange.

[0045] Generally, the flange part of the high-neck flange is polished first, because the flange is more convenient when limited, the friction generated when fixed is greater, it is easier to fix, and it is less likely to be damaged; When fixing the pipe body part of the high-neck flange, the bottom sleeve 305 is twisted to make the bottom sleeve 305 move to one side. At this time, the bottom sleeve 305 drives the bracket 307 to move. The bracket 307 can drive the channel 308 to move during the rotation process. During the movement of the channel 308, the driven rod 303 is driven to move under the limiting effect of its hole wall. The movement of the driven rod 303 drives the horizontal sleeve 302 at its bottom to move. After the movement, the driven rod 303 is located at the bottom of the positioning box 415 and the ring box 417. At this time, the driving push rod 200 is changed to an extended state. At this time, the driving end of the driving push rod 200 is extended, and the driving push rod 200 drives the push block 403a to rise. The push block 403a drives the spring 403b to contract. The spring 403b contracts to accumulate elastic potential energy. The elastic potential energy drives the top cover 403c to move upward, and the top cover 403c drives the movable frame 404 to translate. The movable frame 404 translates and drives the arc plate 405 The inner wall of the pipe fitting is clamped with the rubber plate 408. At the same time, the driven rod 303 drives the ring box 417 to rise, and the rising of the ring box 417 drives the positioning box 415 to rise. The rising of the positioning box 415 makes the extrusion airbag 418 squeezed and contracted, thereby driving the air pressure inside the ring box 417 and the positioning box 415 to increase, driving the clamping rubber plate 408 to bulge, thereby fixing the outer wall of the pipe fitting. At this time, the pipe body part of the high-neck flange can be fixed. When the contraction process is carried out, a plurality of blocking strips 409 are provided between the arc groove 402 and the rubber plate 408. The setting of the blocking strips 409 can produce a block when the rubber plate 408 is reset, and the blockage will cause it to vibrate. This vibration can effectively vibrate out the metal powder attached to the surface of the rubber plate 408, because at this time the metal powder is only attached to the surface of the rubber plate 408, and it is more convenient to vibrate it off, so as to avoid damaging the flange in the subsequent clamping work. When the flange part needs to be fixed, the movable bottom sleeve 305 moves outward from the positioning box 415 to the follower ring 422, so that the tube fixation of the high-neck flange is converted to the flange fixation of the high-neck flange. At this time, the follower rod 303 drives the follower ring 422. When the follower ring 422 moves, it drives the pin rod 420 to rise. When the pin rod 420 is matched with the hole in the flange, the flange can be prevented from twisting. The follower rod 303 and the horizontal sleeve 302 are perpendicular to each other, which can better enable the follower rod 303 to receive the thrust from the horizontal sleeve 302, thereby better limiting the flange.

[0046] The rest of the structure is the same as that of Example 2.

[0047] In summary, the arrangement of the bracket 307 can transmit the force of the bottom rod 306 to the driven rod 303, and the channels 308 are distributed in a ring array on the bracket 307, so that the bracket 307 can drive the channels 308 to move during the rotation process.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An anti-torsion clamping device for flange processing, characterized in that: It comprises a carrier frame (100), a driving push rod (200) is detachably connected inside the carrier frame (100), and a driving end of the driving push rod (200) is respectively connected to an adjusting mechanism (300) and a fixing mechanism (400); The fixing mechanism (400) comprises a positioning cap (401) fixedly connected to the top end of the carrier frame (100), a plurality of arc grooves (402) are provided on the circumference of the positioning cap (401), a transfer component (403) and a movable frame (404) are provided between the driving push rod (200) and the positioning cap (401), an arc plate (405) is fixedly connected to the outer wall of the movable frame (404), the arc plate (405) is fixedly connected to a rubber plate (408) via an inner hole (406) and a reset rope (407), and a plurality of barrier strips (409) are provided between the arc groove (402) and the rubber plate (408); The transfer component (403) comprises a push block (403a) connected to the driving end of the driving push rod (200), the push block (403a) being connected to a top cover (403c) via a spring (403b), and the outer wall of the top cover (403c) is in contact with the inner wall of the movable frame (404).

2. The anti-torsion clamping device for flange machining according to claim 1, characterized in that: There are a plurality of movable frames (404), which are distributed in a ring array inside the positioning cap (401). Through holes (410) are provided at both upper and lower ends of the movable frames (404), and a reset ring (411) is provided inside the through hole (410). The top of the movable frame (404) is slidably connected to the positioning cap (401).

3. The anti-torsion clamping device for flange machining according to claim 2, characterized in that: The top end of the positioning cap (401) is arc-shaped, the arc grooves (402) are multiple in number, the multiple arc grooves (402) are distributed in a circular array around the positioning cap (401), and the cross-section of the arc grooves (402) is "S"-shaped.

4. The anti-torsion clamping device for flange machining according to claim 3, characterized in that: The transfer component (403) further comprises a conical surface (403d) provided at one end of the push block (403a) away from the driving push rod (200), and the top cover (403c) is provided with a contact surface (403e) corresponding to the conical surface (403d), and a gap is provided between the conical surface (403d) and the contact surface (403e).

5. The anti-torsion clamping device for flange machining according to claim 4, characterized in that: The fixing mechanism (400) further comprises a first positioning hole (412) and a second positioning hole (413) which are provided at the top of the carrier frame (100); a circular groove (414) is provided at the bottom of the first positioning hole (412); a positioning box (415) is slidably connected inside the first positioning hole (412); a clamping rubber sheet (416) is provided on a side of the positioning box (415) close to the positioning cap (401); a ring box (417) is fixedly connected at the bottom of the positioning box (415); an extrusion airbag (418) is provided at the top of the ring box (417); an expansion hole (419) is provided in the middle of the second positioning hole (413); a pin rod (420) is slidably connected inside the second positioning hole (413); the pin rod (420) is located in the expansion hole (419) and is connected to an anti-slip ring (421); and a follower ring (422) is connected at the bottom of the pin rod (420).

6. The anti-torsion clamping device for flange machining according to claim 5, characterized in that: The cross section of the first positioning hole (412) is arc-shaped; the first positioning hole (412) is located between the second positioning hole (413) and the positioning cap (401); the cross section of the second positioning hole (413) is circular; the first positioning holes (412) and the second positioning holes (413) are both multiple in number and are distributed on the carrier (100) in a ring array.

7. The anti-torsion clamping device for flange machining according to claim 6, characterized in that: The adjustment mechanism (300) comprises a plurality of horizontal rods (301) connected to the driving end of the driving push rod (200), the other end of the horizontal rod (301) is sleeved with a horizontal sleeve (302), and the top of the horizontal sleeve (302) is fixedly connected with a driven rod (303).

8. The anti-torsion clamping device for flange machining according to claim 7, characterized in that: The plurality of horizontal rods (301) are distributed in a ring array around the driving end of the driving push rod (200), the top of the driven rod (303) is in contact with the bottom of the ring box (417), and the inclination angle between the driven rod (303) and the horizontal sleeve (302) is ninety degrees.

9. The anti-torsion clamping device for flange machining according to claim 8, characterized in that: The adjustment mechanism (300) further comprises a side hole (304) arranged on the carrier frame (100), a bottom sleeve (305) being slidably connected inside the side hole (304), a bottom rod (306) being slidably connected inside the bottom of the bottom sleeve (305), a bracket (307) being fixedly connected to the bottom rod (306), and the bracket (307) being in contact with the outer wall of the driven rod (303) through a hole (308).

10. The anti-torsion clamping device for flange machining according to claim 9, characterized in that: The cross section of the side hole (304) is arc-shaped, the cross sections of the bottom sleeve (305) and the bottom rod (306) are both circular, and the bottom of the bracket (307) fits the top of the horizontal sleeve (302).

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