CN218835700U - U-shaped pipe forming device for reactor - Google Patents

Abstract

The utility model discloses a U-shaped pipe forming device used on a reactor, which comprises a machine body platform and a supporting frame, wherein the machine body platform is provided with a rotating seat and a driving component, the driving component comprises a driving motor and a rotating main shaft, and the driving motor drives the rotating main shaft to rotate when working; a central wheel is arranged in the rotating seat and is arranged on the outer layer of the rotating main shaft through a bearing; the rotating seat is also provided with a limiting assembly, the limiting assembly comprises a turntable, a screw rod and a limiting wheel, and the turntable drives the limiting wheel to move relative to the central wheel while rotating; a clamping assembly for clamping the U-shaped pipe is arranged on the supporting frame, and a propping assembly for supporting the U-shaped pipe is arranged between the clamping assembly and the rotating seat; the utility model drives the rotating seat to rotate relative to the machine body platform through the motor, a central wheel for determining the bending radius is arranged in the rotating seat, the U-shaped pipe is positioned through the limiting component, and the U-shaped pipe is fixed through the clamping component; the bending precision is high, the bending position is accurate, and the bending process is safe and reliable.

Description

U-shaped pipe forming device used on reactor

Technical Field

The utility model belongs to the technical field of U type pipe forming device, concretely relates to U type pipe forming device for on reactor.

Background

The reactor is a device for realizing the reaction process and is widely applied to the fields of chemical industry, oil refining, metallurgy and the like. The reactor comprises a tank body, wherein a plurality of mutually communicated U-shaped pipes are arranged in the tank body, and the U-shaped pipes are used as flow channels of heat exchange media. U type pipe on the market generally all bends the shaping through vertical hollow steel pipe at present, and the general manual work of adopting the location frock is bent, because the dynamics of manual work bending is uneven, causes the wall thickness of steel pipe bending position inhomogeneous easily, influences product quality. When the steel pipe is bent manually, the steel pipe is easy to slide relative to the positioning tool, so that the bending position of the steel pipe can be shifted, and the bending precision is low. Therefore, it is desirable to design a U-tube forming apparatus for use in a reactor to overcome the above difficulties.

Disclosure of Invention

The utility model designs a U-shaped pipe forming device used on a reactor aiming at the problems existing in the prior art, the utility model discloses a motor drive rotating seat rotates relative to a machine body platform, a center wheel for determining the bending radius is arranged in the rotating seat, a U-shaped pipe is positioned through a limiting component, and the U-shaped pipe is fixed through a clamping component; the bending precision is high, the bending position is accurate, and the bending process is safe and reliable.

The invention aims to be realized by the following technical scheme: a U-shaped pipe forming device used on a reactor comprises a machine body platform and a supporting frame, wherein a rotating seat is arranged on the machine body platform, and a driving assembly for driving the rotating seat to rotate relative to the machine body platform is further arranged on the machine body platform; a central wheel is arranged in the rotating seat and is arranged on the outer layer of the rotating main shaft through a bearing; the rotating seat is also provided with a limiting assembly, the limiting assembly comprises a rotating disc, a screw rod and a limiting wheel, and the rotating disc drives the limiting wheel to move relative to the central wheel while rotating; the supporting frame is provided with a clamping assembly used for clamping the U-shaped pipe, and a supporting component used for supporting the U-shaped pipe is arranged between the clamping assembly and the rotating seat.

Preferably, the driving assembly further comprises a mounting sleeve, a compression ring, a support ring and a support sleeve; a circular through hole is formed in the upper end face of the machine body platform, and an installation shaft sleeve is arranged in the circular through hole; the tail end of the rotating main shaft is arranged on the lower end face of the machine body platform through a bearing, the top end of the rotating main shaft sequentially penetrates through the mounting shaft sleeve and the central wheel and penetrates out of the rotating seat, and a nut for connecting the top end of the rotating main shaft and the rotating seat is arranged between the top end of the rotating main shaft and the rotating seat; a first bearing and a second bearing are arranged between the rotating main shaft and the mounting shaft sleeve, and the first bearing and the second bearing are arranged side by side up and down and are adjacent to each other; a compression ring and a support ring are sequentially arranged above the first bearing, the compression ring is arranged adjacent to the first bearing, and the support ring is arranged adjacent to the rotating seat; the lower terminal surface of fuselage platform is equipped with driving motor, the last first gear that is equipped with of driving motor, be equipped with the second gear on the rotatory main shaft, first gear and second gear intermeshing.

The driving motor drives the first gear to rotate while working, the first gear rotates, the second gear is meshed to rotate, the second gear rotates while driving the rotating main shaft to rotate relative to the machine body platform, and the rotating main shaft rotates while driving the rotating seat to rotate relative to the machine body platform; through setting up installation axle sleeve and clamp ring, rotatory main shaft pivoted in-process has better concentricity with the centre wheel like this. Through setting up the support ring, it is steady more and can not have the interference with the surface of fuselage platform at rotatory in-process to rotate the seat like this.

Preferably, the nut is in threaded connection with the rotary main shaft and is attached to the upper end face of the rotating seat, a limiting step for mounting the second bearing is arranged in the mounting shaft sleeve, and the limiting step is arranged on the inner wall of the mounting shaft sleeve; the clamp ring is laminated mutually with the support ring and sets up and both all install the axle sleeve and be equipped with the clearance, and rotatory main shaft drives clamp ring and support ring synchronous rotation in the pivoted, drives in the time of the support ring pivoted it is rotatory to rotate the seat.

The rotating seat is fixed on the rotating main shaft through the nut, so that the rotating seat and the rotating main shaft can rotate synchronously, the process is more stable, and the rotating seat cannot move up and down relative to the machine body platform. The second bearing is arranged on the limiting step, the second bearing cannot move up and down, and the rotating main shaft and the mounting shaft sleeve can keep good concentricity.

Preferably, a third bearing and a fourth bearing which are used for connecting the center wheel and the rotating main shaft are arranged between the center wheel and the rotating main shaft, and the third bearing is arranged above the fourth bearing; a supporting shaft sleeve is arranged between the third bearing and the fourth bearing, the upper end surface of the supporting shaft sleeve is attached to the third bearing, and the lower end surface of the supporting shaft sleeve is attached to the fourth bearing; the outer cover of rotatory main shaft is established and is installed first snap ring and the second snap ring that is used for the location, first snap ring and the laminating of third bearing each other, the laminating of second snap ring and fourth bearing each other.

The central wheel is arranged on the rotating main shaft through a third bearing and a fourth bearing, so that the central wheel can rotate relative to the rotating main shaft; the first clamping ring is arranged on the upper end face of the third bearing, the second clamping ring is arranged on the lower end face of the fourth bearing, so that the center wheel is limited between the first clamping ring and the second clamping ring, and the center wheel cannot move along the axial direction of the main shaft relative to the rotating shaft.

Preferably, the limiting assembly further comprises a positioning pin, a third clamping ring, a fourth clamping ring, a fifth bearing and a sliding seat; the sliding seat is arranged in the rotating seat, and the upper end surface and the lower end surface of the sliding seat are mutually attached to the inner wall of the rotating seat; the limiting wheel is installed in the sliding seat through a positioning pin, a third clamping ring and a fourth clamping ring for positioning are respectively arranged at two ends of the positioning pin, and the third clamping ring is arranged above the fourth clamping ring; the screw rod is arranged between the sliding seat and the rotating seat, a threaded hole for mounting the screw rod is formed in the rotating seat, and the screw rod penetrates through the threaded hole and is mounted on the side wall of the sliding seat through a fifth bearing.

The U-shaped pipe to be bent can be limited between the central wheel and the limiting wheel by arranging the limiting component. When the turntable is pulled, the turntable drives the screw rod to rotate, the screw rod rotates and simultaneously moves in a meshing manner relative to the threaded hole, the screw rod moves and simultaneously drives the sliding seat to move relative to the rotating seat, the limiting wheel is installed in the sliding seat through the positioning pin, and the sliding seat moves and simultaneously drives the limiting wheel to be close to the central wheel.

Preferably, a turntable fixedly connected with the screw rod is arranged at the end of the screw rod, which is far away from the sliding seat, the screw rod and the fifth bearing are coaxially arranged, and the turntable drives the screw rod to rotate and simultaneously the screw rod to move in a meshing manner relative to the rotating seat; the lower end face of the rotating seat is provided with limiting strips which are arranged in pairs, and the limiting strips are symmetrically distributed on two sides of the sliding seat.

The limiting strips are arranged on the rotating seat, so that the sliding seat can only move along the direction of the limiting strips in the moving process, the moving direction of the sliding seat relative to the rotating seat is unique, and the limiting wheels can move towards the central wheel and are matched with the central wheel to clamp the U-shaped pipe.

Preferably, a clamping assembly is arranged at the end, close to the rotating seat, of the supporting frame, the clamping assembly comprises a clamping cylinder, sliding parts which are arranged in pairs are arranged on the clamping cylinder, each sliding part is provided with a clamping block fixedly connected with the sliding part, and each clamping block is provided with a clamping part; each clamping block is arranged oppositely, and the clamping cylinder drives each clamping block to approach to or depart from each other when working.

Just can make things convenient for centre gripping U type pipe through setting up clamping component, avoided U type pipe like this to remove at the relative fuselage platform of in-process of bending, the position that U type pipe need be bent just is more accurate like this. The clamping cylinder drives the two sliding parts to move synchronously when working, the clamping blocks move when the sliding parts move, and the clamping blocks can stably clamp the U-shaped pipe when approaching each other.

Preferably, a positioning piece is arranged at the end of the support frame, which is far away from the rotating seat, a positioning through hole for installing the positioning piece is arranged on the support frame, and the support frame is detachably connected with the positioning piece; the end face, facing the supporting frame, of the positioning piece is provided with an inward concave portion, and the surface of the inward concave portion is an arc surface.

The positioning piece detachably connected with the support frame is arranged on the support frame, so that the extending part of the U-shaped pipe is conveniently placed on the support frame in the middle; the positioning piece is arranged on the central axis of the support frame, and when the inner concave part on the positioning piece is attached to the outer wall of the U-shaped pipe, the U-shaped pipe is placed on the support frame in the middle; then cooperate the fixed U type pipe of clamping assembly, the straight-line segment that the U type pipe was bent and is formed keeps tangent state throughout with the straightway on the U type pipe like this, and the outer wall is more level and smooth between circular arc section and the straightway.

Preferably, the abutting assembly comprises an abutting piece and a fastener, and the abutting piece is installed on the upper end face of the fuselage platform; the machine body platform is provided with a strip-shaped through hole for inserting a fastening piece, the fastening piece is in threaded connection with the abutting piece, and the fastening piece penetrates through the strip-shaped through hole and is installed inside the abutting piece; the side wall of the abutting part is provided with an abutting part, and the abutting part is arranged in a way of being perpendicular to the axial direction of the strip-shaped through hole towards the end surface of the central wheel; but support frame and fuselage platform relative movement, the portion of supporting is parallel to each other with the lateral wall of support frame towards the terminal surface of centre wheel.

Through setting up and propping up the subassembly, the steel pipe that extends out between centre wheel and the spacing wheel will support to lean on the piece like this, just so the steel pipe is bent after the atress more easily. The end face of the abutting portion facing the central wheel and the side wall of the supporting frame are parallel to each other, so that the steel pipe extending out from the central wheel and the limiting wheel can be always located on the same axis, and the bending position of the U-shaped pipe is smoother. The external diameter of centre wheel is different, and the radius that U type pipe was bent can also be different like this, and the position that the steel pipe between centre wheel and the spacing wheel extended toward the support frame also can be different like this, moves to support and supports and support the piece and make it fix on bar through-hole through the fastener, just so can conveniently adjust and support the position relation who supports the relative centre wheel of piece.

Preferably, a first extrusion part for placing a product is arranged on the center wheel, a second extrusion part for placing the product is arranged on the limiting wheel, and the first extrusion part and the second extrusion part are arranged at the same horizontal height. Therefore, the U-shaped pipe is just clamped in the area formed by the first extrusion part and the second extrusion part in a surrounding mode, the U-shaped pipe is limited in the horizontal direction and the vertical direction, and the bending position of the U-shaped pipe is more accurate.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a driving motor on the drive assembly drives and rotates the relative fuselage platform of seat and rotate, drives spacing round through spacing subassembly and is close to the centre wheel, and the steel pipe that need bend like this will be by the centre gripping location between centre wheel and spacing round, rotates the piece and will bend the steel pipe when driven by driving motor, and the radius of bending passes through the external diameter control of centre wheel, and the radius controllability of bending is high and it is effectual to bend. The limiting assembly drives the sliding seat to move through the lead screw, and the sliding seat drives the limiting wheel to move when moving, so that the moving distance of the limiting wheel is controllable, and the moving precision is high. Set up clamping component on the support frame, conveniently fixed U type pipe has just avoided the steel pipe to produce the skew at the in-process of bending. The steel pipe that extends out between center wheel and the spacing wheel is supported the subassembly with leaning on and is laminated, bends more easily after the steel pipe atress like this. Therefore, the utility model discloses the precision of bending is high, and it is effectual and reliable to bend.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is an internal structural view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at position A;

FIG. 4 is an exploded view of the drive assembly;

FIG. 5 is an exploded view of the stop assembly;

FIG. 6 is an exploded view of the components of the stand;

fig. 7 is a perspective view of the abutment assembly.

The labels in the figure are: 1. a fuselage platform; 2. a support frame; 3. a rotating seat; 4. a drive assembly; 41. a drive motor; 42. rotating the main shaft; 43. installing a shaft sleeve; 44. a compression ring; 45. a support ring; 46. a support sleeve; 47. a nut; 48. a first bearing; 49. a second bearing; 410. a first gear; 411. a second gear; 412. a third bearing; 413. a fourth bearing; 5. a center wheel; 6. a limiting component; 61. a turntable; 62. a screw rod; 63. a limiting wheel; 64. positioning pins; 65. a third snap ring; 66. a fourth snap ring; 67. a fifth bearing; 68. a sliding seat; 7. a clamping assembly; 71. a clamping cylinder; 72. a slider; 73. a clamping block; 74. a clamping portion; 8. an abutment assembly; 81. an abutting member; 82. a fastener; 83. an abutting portion; 9. a circular through hole; 10. a limiting step; 11. a first snap ring; 12. a second snap ring; 13. a threaded hole; 14. a limiting strip; 15. a positioning member; 16. positioning the through hole; 17. an inner concave portion; 18. a strip-shaped through hole; 19. a first pressing part; 20. and a second pressing portion.

Detailed Description

The invention will be further described with reference to the embodiments shown in the drawings to which:

as shown in fig. 1 to 7, the embodiment discloses a U-shaped tube forming device for a reactor, which includes a machine body platform 1 and a support frame 2, wherein the machine body platform 1 is provided with a rotating seat 3, and is further provided with a driving assembly 4 for driving the rotating seat 3 to rotate relative to the machine body platform 1, the driving assembly 4 includes a driving motor 41 and a rotating main shaft 42, the rotating main shaft 42 and the rotating seat 3 rotate synchronously, and the driving motor 41 drives the rotating main shaft 42 to rotate when working; a central wheel 5 is arranged in the rotating seat 3, and the central wheel 5 is arranged on the outer layer of the rotating main shaft 42 through a bearing; the rotating seat 3 is also provided with a limiting assembly 6, the limiting assembly 6 comprises a rotating disc 61, a screw rod 62 and a limiting wheel 63, and the rotating disc 61 drives the limiting wheel 63 to move relative to the central wheel 5 while rotating; and a clamping component 7 for clamping the U-shaped pipe is arranged on the supporting frame 2, and a propping component 8 for supporting the U-shaped pipe is arranged between the clamping component 7 and the rotating seat 3.

The driving assembly 4 further comprises a mounting sleeve 43, a compression ring 44, a support ring 45 and a support sleeve 46; a circular through hole 9 is formed in the upper end face of the machine body platform 1, and a mounting shaft sleeve 43 is arranged in the circular through hole 9; the tail end of the rotating main shaft 42 is mounted on the lower end face of the machine body platform 1 through a bearing, the top end of the rotating main shaft 42 sequentially penetrates through the mounting shaft sleeve 43 and the central wheel 5 and penetrates out of the rotating seat 3, and a nut 47 for connecting the top end of the rotating main shaft 42 and the rotating seat 3 is arranged between the top end of the rotating main shaft 42 and the rotating seat 3; a first bearing 48 and a second bearing 49 are arranged between the rotating main shaft 42 and the mounting shaft sleeve 43, and the first bearing 48 and the second bearing 49 are arranged side by side and adjacent to each other; a compression ring 44 and a support ring 45 are sequentially arranged above the first bearing 48, the compression ring 44 is arranged adjacent to the first bearing 48, and the support ring 45 is arranged adjacent to the rotating seat 3; the lower end face of the fuselage platform 1 is provided with a driving motor 41, the driving motor 41 is provided with a first gear 410, the rotating spindle 42 is provided with a second gear 411, and the first gear 410 and the second gear 411 are meshed with each other. The nut 47 is in threaded connection with the rotating main shaft 42 and is attached to the upper end face of the rotating seat 3, a limiting step 10 for mounting a second bearing 49 is arranged in the mounting shaft sleeve 43, and the limiting step 10 is arranged on the inner wall of the mounting shaft sleeve 43; the clamp ring 44 and the support ring 45 are mutually attached and arranged, gaps are formed between the clamp ring 44 and the support ring 45 and between the clamp ring and the mounting shaft sleeve 43, the rotary main shaft 42 rotates and simultaneously drives the clamp ring 44 and the support ring 45 to synchronously rotate, and the support ring 45 rotates and simultaneously drives the rotary seat 3 to rotate. A third bearing 412 and a fourth bearing 413 for connecting the central wheel 5 and the rotating main shaft 42 are arranged between the central wheel and the rotating main shaft, and the third bearing 412 is arranged above the fourth bearing 413; a supporting shaft sleeve 46 is arranged between the third bearing 412 and the fourth bearing 413, the upper end surface of the supporting shaft sleeve 46 is attached to the third bearing 412, and the lower end surface of the supporting shaft sleeve 46 is attached to the fourth bearing 413; the outer layer of the rotating main shaft 42 is sleeved with a first clamping ring 11 and a second clamping ring 12 which are used for positioning, the first clamping ring 11 is mutually attached to the third bearing 412, and the second clamping ring 12 is mutually attached to the fourth bearing 413.

The limiting assembly 6 further comprises a positioning pin 64, a third clamping ring 65, a fourth clamping ring 66, a fifth bearing 67 and a sliding seat 68; the sliding seat 68 is arranged in the rotating seat 3, and the upper end surface and the lower end surface of the sliding seat 68 are mutually attached to the inner wall of the rotating seat 3; the limiting wheel 63 is installed in a sliding seat 68 through a positioning pin 64, a third clamping ring 65 and a fourth clamping ring 66 for positioning are respectively arranged at two ends of the positioning pin 64, and the third clamping ring 65 is arranged above the fourth clamping ring 66; a screw rod 62 is arranged between the sliding seat 68 and the rotating seat 3, a threaded hole 13 for installing the screw rod 62 is arranged on the rotating seat 3, and the screw rod 62 passes through the threaded hole 13 and is installed on the side wall of the sliding seat 68 through a fifth bearing 67. The end of the screw rod 62 far away from the sliding seat 68 is provided with a rotary disc 61 fixedly connected with the screw rod 62, the screw rod 62 and the fifth bearing 67 are coaxially arranged, and the screw rod 62 is driven by the rotary disc 61 to rotate and simultaneously the screw rod 62 is meshed with the rotating seat 3 to move; the lower end face of the rotating seat 3 is provided with limiting strips 14 which are arranged in pairs, and the limiting strips 14 are symmetrically distributed on two sides of the sliding seat 68.

A clamping assembly 7 is arranged at the end of the support frame 2 close to the rotating seat 3, the clamping assembly 7 comprises a clamping cylinder 71, sliding members 72 which are arranged in pairs are arranged on the clamping cylinder 71, each sliding member 72 is provided with a clamping block 73 fixedly connected with the sliding member 72, and each clamping block 73 is provided with a clamping part 74; each clamping block 73 is arranged oppositely, and the clamping cylinder 71 works and drives each clamping block 73 to approach to or move away from each other. A positioning part 15 is arranged at the end of the support frame 2 far away from the rotating seat 3, a positioning through hole 16 for installing the positioning part 15 is arranged on the support frame 2, and the support frame 2 is detachably connected with the positioning part 15; the end face, facing the support frame 2, of the positioning piece 15 is provided with an inner concave portion 17, and the surface of the inner concave portion 17 is an arc surface. The abutting assembly 8 comprises an abutting piece 81 and a fastening piece 82, wherein the abutting piece 81 is installed on the upper end face of the fuselage platform 1; the fuselage platform 1 is provided with a strip-shaped through hole 18 for inserting a fastening piece 82, the fastening piece 82 is in threaded connection with the abutting piece 81, and the fastening piece 82 penetrates through the strip-shaped through hole 18 and is installed inside the abutting piece 81; the side wall of the abutting piece 81 is provided with an abutting part 83, and the abutting part 83 faces the end face of the central wheel 5 and is perpendicular to the axial direction of the strip-shaped through hole 18; the support frame 2 and the fuselage platform 1 can move relatively, and the abutting part 83 is parallel to the end face of the central wheel 5 and the side wall of the support frame 2. The center wheel 5 is provided with a first extrusion part 19 for placing a product, the limiting wheel 63 is provided with a second extrusion part 20 for placing the product, and the first extrusion part 19 and the second extrusion part 20 are arranged at the same horizontal height.

The concrete operation process of this embodiment is as follows, first place the steel tube that needs to be bent on the fuselage platform 1 and penetrate the rotating seat 3, then place the steel tube on the extension on the supporting arm 2 and position through the locating piece 15, make the outer wall of the steel tube and the concave part 17 laminate each other, then make the spacing wheel 63 close to the centre wheel 5 through the spacing assembly 6; the working principle of the limiting assembly 6 is as follows, when the rotary disc 61 is pulled, the rotary disc 61 drives the screw rod 62 to rotate, the screw rod 62 rotates and simultaneously moves in a meshing manner relative to the threaded hole 13, the screw rod 62 moves and simultaneously drives the sliding seat 68 to move relative to the rotating seat 3, the limiting wheel 63 is installed in the sliding seat 68 through the positioning pin 64, and the sliding seat 68 moves and simultaneously drives the limiting wheel 63 to be close to the central wheel 5. The steel pipe to be bent is clamped between the central wheel 5 and the limiting wheel 63, and then the steel pipe is fixed through the clamping assembly 7. When the steel pipe is fixed, the position of the abutting assembly 8 is adjusted, the abutting piece 81 is moved to enable the end face of the abutting portion 83 facing to the central wheel to be attached to the outer wall of the steel pipe, and then the abutting piece 81 is fixed in the strip-shaped through hole 18 through the fastening piece 82. And finally, the driving assembly 4 is controlled to work, the driving motor 41 drives the first gear 410 to rotate while working, the first gear 410 rotates the second gear 411 to rotate in a meshed mode, the second gear 411 rotates and simultaneously drives the rotating main shaft 42 to rotate relative to the machine body platform 1, the rotating main shaft 42 rotates and simultaneously drives the rotating seat 3 to rotate relative to the machine body platform 1, and therefore the first position on the steel pipe is bent.

Then, opening the clamping assembly 7, pushing the steel pipe to move, moving a position, which needs to be bent, on the second position of the steel pipe to the position near the abutting assembly 8, and then locking the steel pipe through the clamping assembly 7; then, the driving assembly 4 is opened, and the steel pipe is bent twice to form a U-shaped pipe.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (10)

1. A U-shaped pipe forming device used on a reactor comprises a machine body platform (1) and a supporting frame (2), and is characterized in that a rotating seat (3) is arranged on the machine body platform (1), a driving assembly (4) for driving the rotating seat (3) to rotate relative to the machine body platform (1) is further arranged, the driving assembly (4) comprises a driving motor (41) and a rotating main shaft (42), the rotating main shaft (42) and the rotating seat (3) rotate synchronously, and the driving motor (41) drives the rotating main shaft (42) to rotate when in work; a central wheel (5) is arranged in the rotating seat (3), and the central wheel (5) is arranged on the outer layer of the rotating main shaft (42) through a bearing; the rotating seat (3) is also provided with a limiting assembly (6), the limiting assembly (6) comprises a turntable (61), a screw rod (62) and a limiting wheel (63), and the turntable (61) rotates and drives the limiting wheel (63) to move relative to the central wheel (5); the U-shaped pipe supporting device is characterized in that a clamping assembly (7) used for clamping a U-shaped pipe is arranged on the supporting frame (2), and a propping assembly (8) used for supporting the U-shaped pipe is arranged between the clamping assembly (7) and the rotating seat (3).

2. U-tube forming device for reactors according to claim 1, wherein the drive assembly (4) further comprises a mounting sleeve (43), a clamp ring (44), a support ring (45) and a support sleeve (46); a circular through hole (9) is formed in the upper end face of the machine body platform (1), and an installation shaft sleeve (43) is arranged in the circular through hole (9); the tail end of the rotating main shaft (42) is installed on the lower end face of the machine body platform (1) through a bearing, the top end of the rotating main shaft (42) sequentially penetrates through the installation shaft sleeve (43) and the central wheel (5) and penetrates out of the rotating seat (3), and a nut (47) for connecting the top end of the rotating main shaft (42) and the rotating seat (3) is arranged between the top end of the rotating main shaft (42) and the rotating seat (3); a first bearing (48) and a second bearing (49) are arranged between the rotating main shaft (42) and the mounting shaft sleeve (43), and the first bearing (48) and the second bearing (49) are arranged side by side and adjacent to each other; a pressing ring (44) and a supporting ring (45) are sequentially arranged above the first bearing (48), the pressing ring (44) is adjacent to the first bearing (48), and the supporting ring (45) is adjacent to the rotating seat (3); the lower terminal surface of fuselage platform (1) is equipped with driving motor (41), be equipped with first gear (410) on driving motor (41), be equipped with second gear (411) on rotating spindle (42), first gear (410) and second gear (411) intermeshing.

3. The U-shaped pipe forming device for the reactor as claimed in claim 2, wherein the nut (47) is in threaded connection with the rotating main shaft (42) and is attached to the upper end face of the rotating base (3), a limiting step (10) for mounting the second bearing (49) is arranged in the mounting shaft sleeve (43), and the limiting step (10) is arranged on the inner wall of the mounting shaft sleeve (43); pressing ring (44) and support ring (45) laminate setting each other and both all are equipped with the clearance with installation axle sleeve (43), and rotatory main shaft (42) pivoted drives pressing ring (44) and support ring (45) synchronous rotation simultaneously, and support ring (45) pivoted drives simultaneously it is rotatory to rotate seat (3).

4. The U-tube forming device for reactors according to claim 2, wherein a third bearing (412) and a fourth bearing (413) are provided between the center wheel (5) and the rotating main shaft (42) for connecting the center wheel and the rotating main shaft, and the third bearing (412) is provided above the fourth bearing (413); a supporting shaft sleeve (46) is arranged between the third bearing (412) and the fourth bearing (413), the upper end face of the supporting shaft sleeve (46) is attached to the third bearing (412), and the lower end face of the supporting shaft sleeve (46) is attached to the fourth bearing (413); rotatory main shaft (42) outer cover has been established and has been used for the first snap ring (11) and second snap ring (12) of location, first snap ring (11) and third bearing (412) are laminated each other, and second snap ring (12) and fourth bearing (413) are laminated each other.

5. The U-shaped pipe forming device for the reactor, according to claim 1, wherein the limiting assembly (6) further comprises a positioning pin (64), a third snap ring (65), a fourth snap ring (66), a fifth bearing (67) and a sliding seat (68); the sliding seat (68) is arranged in the rotating seat (3), and the upper end surface and the lower end surface of the sliding seat (68) are mutually attached to the inner wall of the rotating seat (3); the limiting wheel (63) is installed in the sliding seat (68) through a positioning pin (64), a third clamping ring (65) and a fourth clamping ring (66) for positioning are respectively arranged at two ends of the positioning pin (64), and the third clamping ring (65) is arranged above the fourth clamping ring (66); the lead screw (62) is arranged between the sliding seat (68) and the rotating seat (3), a threaded hole (13) for installing the lead screw (62) is formed in the rotating seat (3), and the lead screw (62) penetrates through the threaded hole (13) and is installed on the side wall of the sliding seat (68) through a fifth bearing (67).

6. The U-shaped pipe forming device for the reactor as recited in claim 5, wherein the end of the screw rod (62) far away from the sliding seat (68) is provided with a rotary table (61) fixedly connected with the screw rod, the screw rod (62) and a fifth bearing (67) are coaxially arranged, and the rotary table (61) drives the screw rod (62) to rotate and simultaneously the screw rod (62) moves in a meshing way relative to the rotating seat (3); the lower end face of the rotating seat (3) is provided with limiting strips (14) which are arranged in pairs, and the limiting strips (14) are symmetrically distributed on two sides of the sliding seat (68).

7. The U-shaped tube forming device for the reactor is characterized in that a clamping assembly (7) is arranged at the end, close to the rotating seat (3), of the supporting frame (2), the clamping assembly (7) comprises a clamping cylinder (71), sliding members (72) which are arranged in pairs are arranged on the clamping cylinder (71), a clamping block (73) which is fixedly connected with each sliding member (72) is arranged on each sliding member (72), and a clamping part (74) is arranged on each clamping block (73); each clamping block (73) is arranged oppositely, and the clamping cylinder (71) drives each clamping block (73) to approach to or separate from each other when working.

8. The U-shaped pipe forming device for the reactor as claimed in claim 1, wherein a positioning member (15) is disposed at the end of the supporting frame (2) far away from the rotating base (3), a positioning through hole (16) for installing the positioning member (15) is disposed on the supporting frame (2), and the supporting frame (2) is detachably connected with the positioning member (15); the end face, facing the supporting frame (2), of the positioning piece (15) is provided with an inner concave portion (17), and the surface of the inner concave portion (17) is an arc surface.

9. U-tube forming device for reactors according to claim 1, wherein the abutment assembly (8) comprises an abutment member (81) and a fastening member (82), the abutment member (81) being mounted on the upper end face of the fuselage platform (1); the fuselage platform (1) is provided with a strip-shaped through hole (18) for inserting a fastener (82), the fastener (82) is in threaded connection with the abutting piece (81), and the fastener (82) penetrates through the strip-shaped through hole (18) and is installed inside the abutting piece (81); the side wall of the abutting piece (81) is provided with an abutting part (83), and the abutting part (83) faces the end face of the central wheel (5) and is perpendicular to the axial direction of the strip-shaped through hole (18); but support frame (2) and fuselage platform (1) relative movement, support portion (83) towards the terminal surface of centre wheel (5) and the mutual parallel arrangement of lateral wall of support frame (2).

10. The U-shaped pipe forming device for the reactor is characterized in that a first extrusion part (19) for placing the product is arranged on the central wheel (5), a second extrusion part (20) for placing the product is arranged on the limiting wheel (63), and the first extrusion part (19) and the second extrusion part (20) are arranged at the same horizontal height.

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