CN219881010U - Auxiliary bracket at tail part of pipe winding machine - Google Patents

Abstract

The utility model provides an auxiliary bracket at the tail part of a tube winding machine in the field of heat exchangers. Comprises a bracket, a carrier roller, a clamping ring, a cylinder, a clamping jaw, a centering clamping bracket and a rotary joint; the brackets are symmetrically provided with carrier rollers to form carrier roller groups, the two carrier rollers are jointly supported with a clamping ring, and the clamping ring is seated on the two carrier rollers to roll; a centering clamping bracket is arranged in the clamping ring, and is used for positioning and mounting four cylinders and clamping jaws screwed on piston rods of the cylinders, and the clamping jaws are used for centering and pneumatically clamping four claws around the tail end of a tube bundle of the tube heat exchanger; the cylinder passes through rotary joint and pneumatic component links to each other for the rand rotates on the bearing roller. According to the utility model, the carrier rollers are symmetrically arranged on the brackets to form the carrier roller group supporting clamping ring, the centering clamping brackets are arranged in the clamping ring to clamp the four cylinders, and the clamping claws screwed on the piston rods of the cylinders center and pneumatically clamp the four claws at the tail end of the tube bundle of the tube-wound heat exchanger; the cylinder is connected with the pneumatic assembly through a rotary joint. The auxiliary bracket is suitable for being used as an auxiliary bracket.

Description

Auxiliary bracket at tail part of pipe winding machine

Technical Field

The utility model relates to a pipe winding machine accessory in the field of heat exchangers, in particular to an auxiliary bracket at the tail part of a pipe winding machine.

Background

At present, in the processing process of a tube bundle of a tube-wound heat exchanger, a clamping mode is adopted, wherein one end of the tube bundle is clamped, and the other end of the tube bundle is supported. The clamping end belongs to the service range of a chuck at the front end of the tube winding machine, and clamping and power driving are not problems. The tail support is designed as usual, and the working range of the tube winding machine is very narrow, mainly because of the following reasons:

(1) The axial length of the tube bundle of the coiled tube heat exchanger is a variable, the tail support is required to be moved randomly along the axial direction, and the coiled tube heat exchanger is easy to fix safely.

(2) The center height of the tail support is also randomly adjusted, and the centers of the front tube plate and the rear tube plate are mainly ensured to be on the same horizontal axis.

(3) Cost if the two problems are to be solved on the same master machine, the manufacturing cost of the pipe winding machine is greatly increased, so that downstream enterprises cannot digest and absorb the pipe winding machine.

Disclosure of Invention

In order to solve at least one of the above-mentioned problems, the present utility model proposes an auxiliary bracket for a tail portion of a pipe winding machine. The auxiliary bracket clamps four air cylinders through the centering clamping bracket arranged in the clamping ring, and the clamping claw screwed on the piston rod of the air cylinder centers four claws at the tail end of the tube bundle of the tube-winding heat exchanger and clamps pneumatically. The technical problem of support at the tail of a tube bundle of a tube-wound heat exchanger is solved.

The utility model solves the technical problems by adopting the scheme that:

the auxiliary bracket at the tail part of the pipe winding machine comprises a bracket, a carrier roller, a clamping ring, a cylinder, clamping claws, a centering clamping bracket and a rotary joint;

the brackets are symmetrically provided with carrier rollers to form carrier roller groups, the two carrier rollers are jointly supported with a clamping ring, and the clamping ring is seated on the two carrier rollers to roll; a centering clamping bracket is arranged in the clamping ring, and is used for positioning and mounting four cylinders and clamping jaws screwed on piston rods of the cylinders, and the clamping jaws are used for centering and pneumatically clamping four claws around the tail end of a tube bundle of the tube heat exchanger; the cylinder passes through rotary joint and pneumatic component links to each other for the rand rotates on the bearing roller.

In order to further solve the technical problem to be solved, the carrier roller provided by the utility model comprises a tile box, a carrier roller shaft, a carrier roller, a tapered roller bearing, an end cover and a locking nut; the tile box is of an up-down split structure, the upper part is a tile cover, the lower part is a tile seat, and the tile seat is assembled on the bracket; the riding wheel shaft is a stepped shaft, the tile box clamps the shaft diameters of the two ends of the riding wheel shaft, and the riding wheel is assembled in the middle of the riding wheel shaft; tapered roller bearings are embedded in the riding wheels, end covers are screwed on two sides of the riding wheels, and the tapered roller bearings are axially fixed by the end covers; the shaft shoulder of the riding wheel shaft limits one end of the riding wheel, and the other end of the riding wheel is locked and fixed through a locking nut.

Further, the rotary joint comprises a support, a screw plug, a shell, a pipe joint, a mandrel, a ball bearing, a sealing cover and a framework sealing ring;

the support is used for installing and fixing the rotary joint at the air compressor end;

the screw plug penetrates through the support and fixes the shell on the support;

the shell is a hollow shaft sleeve, accommodates the ball bearing, the sealing cover and the framework sealing ring, and is in sealing threaded connection with the screw plug close to the support end;

the pipe joint is arranged at the side part of the shell, which is close to the support, is used as an air inlet pipe and is communicated with the inner cavity of the shell, and the outer end of the pipe joint is connected with the air compressor;

the mandrel is a hollow stepped shaft to form a gas flow passage, and rotates around the shell; the inner end of the ball bearing is arranged in the inner cavity of the shell, a ball bearing is assembled on the shaft diameter, and a sealing cover and a framework sealing ring are respectively arranged on two sides of the ball bearing; the outer end of the air cylinder is provided with a connector serving as an exhaust pipe, the air cylinder is connected with a hose, when the air cylinder rotates, the mandrel rotates along with the air cylinder, the pipe connector is connected with an air compressor, and the rotary connector forms rotary transition;

the ball bearings are arranged on the mandrel, the supporting mandrel rotates in the shell, the ball bearings are in a group, and a through type pressure oil filling cup is arranged on the radial shell between the two ball bearings and is filled with lubricating oil;

the sealing cover is arranged at the inner end of the mandrel, clamped between the screw plug and the ball bearing, and matched with the screw plug to form a closed space so as to keep the air tightness of the shell;

the framework sealing ring is assembled in the inner cavity of the shell far away from the support, and sealing is formed between the mandrel and the shell.

The four-cylinder tube bundle heat exchanger has the advantages that the carrier rollers are symmetrically arranged on the brackets to form the carrier roller group supporting collar, the centering clamping brackets are arranged in the collar to clamp the four cylinders, and the clamping jaws screwed on the piston rods of the cylinders center and pneumatically clamp the tail ends of the tube bundles of the tube bundle heat exchanger; the cylinder passes through rotary joint and pneumatic component links to each other for the rand rotates on the bearing roller. And a large amount of operation space is returned to the user, the user can obtain local materials and find out tail supports with own characteristics, and a large amount of financial resources and material resources are saved. The pneumatic clamping has high automation degree, is easy to realize remote control, and the clamping force is not a fixed value, but a magnitude, so that a user can select according to different working conditions. The auxiliary bracket is suitable for being used as an auxiliary bracket at the tail part of a pipe winding machine.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort to those skilled in the art.

FIG. 1 is an isometric view of an embodiment of the present utility model;

FIG. 2 is a front view of an embodiment of the present utility model;

FIG. 3 is a side view of an embodiment of the present utility model;

FIG. 4 is a side cross-sectional view of an embodiment of the present utility model;

FIG. 5 is a top view of an embodiment of the present utility model;

FIG. 6 is a top cross-sectional view of an embodiment of the present utility model;

FIG. 7 is a cross-sectional view A-A;

FIG. 8 is a cross-sectional view of a swivel joint;

fig. 9 is a schematic diagram of the pneumatic operation of an embodiment of the present utility model.

In the figure:

100. a bracket;

200. the support roller comprises a support roller, 210, a tile box, 220, a support roller shaft, 230, 240, a tapered roller bearing, 250, an end cover and 260, and a lock nut;

300. a collar;

400. a cylinder;

500. a claw;

600. centering clamp bracket, 610, cylinder mounting base, 611, cylinder base, 620, clamp sleeve, 621, clamp sleeve support arm, 622, clamp sleeve suspension arm, 623, clamp sleeve suspension beam, 624, spacer sleeve, 625, adjustment sleeve, 630, guide post, 631, lifting lug, 632, lifting plate I, 633, lifting plate II, 634, rib plate;

700. rotary joint, 710, support, 720, screw plug, 730, shell, 740, pipe joint, 750, mandrel, 760, ball bearing, 770, sealing cover, 780, skeleton sealing ring.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown, an auxiliary bracket at the tail of a pipe winding machine comprises a bracket 100, a carrier roller 200, a clamping ring 300, a cylinder 400, a claw 500, a centering clamping bracket 600 and a rotary joint 700;

the carrier rollers 200 are symmetrically arranged on the bracket 100 to form a carrier roller group, the two carrier rollers 200 are jointly supported with a clamping ring 300, and the clamping ring 300 rolls on the two carrier rollers 200; a centering clamping bracket 600 is arranged in the clamping ring 300, the centering clamping bracket 600 positions and installs four air cylinders 400 and clamping jaws 500 screwed on piston rods of the air cylinders 400, and the clamping jaws 500 center and pneumatically clamp the tail ends of the tube bundles of the tube-wound heat exchanger; the cylinder 400 is connected to the pneumatic assembly by a rotary joint 700 such that the collar 300 rotates on the idler roller 200.

In this embodiment, the included angle between the roller set and the collar 300 is 60 °.

In order to ensure the stability of the structure of the present utility model, the carrier roller 200 comprises a shoe box 210, a carrier roller shaft 220, a carrier roller 230, a tapered roller bearing 240, an end cover 250 and a lock nut 260;

the tile box 210 has a vertically split structure, the upper part is a tile cover, the lower part is a tile seat, and the tile seat is assembled on the bracket 100; the supporting wheel shaft 220 is a stepped shaft, the tile box 210 clamps the shaft diameters of two ends of the supporting wheel shaft 220, and the supporting wheel 230 is assembled in the middle of the supporting wheel shaft 220; tapered roller bearings 240 are embedded in the riding wheel 230, end covers 250 are screwed on two sides of the riding wheel 230, and the tapered roller bearings 240 are axially fixed by the end covers 250; the shoulder of the riding wheel shaft 220 limits one end of the riding wheel 230, and the other end locks and fixes the riding wheel 230 through a locking nut 260.

In the embodiment of the present utility model, the riding wheel set must ensure the principle that the stress of each riding wheel 230 is uniform, that is, one end of the central tube bundle of the tube heat exchanger is clamped on the four-jaw disc chuck, and the other tube sheet is supported on the riding wheel set provided in the embodiment, so as to ensure the straightness of the axis of the central tube bundle, correspondingly adjust the novel riding wheel set, avoid the overlarge stress and overload of the respective riding wheels, and periodically clean and check the riding wheels. The carrier roller 200 adopts a tile box to clamp the shaft diameters of two ends of the carrier roller shaft 220, the tapered roller bearings 240 back to back support the carrier roller 230 to freely rotate on the carrier roller shaft 220, and the contact rate of the outer circular surface of the carrier roller 230 and the outer circular surface of the clamping ring 300 is ensured. The support wheel set has the advantages of simplicity, portability, convenient disassembly, convenient center adjustment and easy fixation.

To further ensure the structural stability of the present utility model, the centering and clamping bracket 600 includes a cylinder mounting base 610, a clamping sleeve 620, and a guide post 630; the inner cavity of the clamping ring 300 is provided with the air cylinders 400 which are symmetrically arranged in ten, the piston rods of the air cylinders 400 are connected with screw connection clamping claws 500 to perform four-center positioning on the tube bundle of the coiled tube heat exchanger, and the centering clamping bracket 600 connects and positions the air cylinders 400 in the clamping ring 300; the upper part of the claw 500 is provided with an arc slip for tightening the tube bundle of the tube heat exchanger, the lower part of the claw 500 is provided with a wing plate, the wing plate is sleeved on the guide post 630 and slides along the guide post 630, and the claw 500 is connected with a piston rod of the air cylinder 400 by adopting adjustable threads;

a cylinder mounting base 610 is arranged on the inner wall of the clamping ring 300, and guide posts 630 are symmetrically arranged on the cylinder mounting base 610 to support the clamping jaw 500 for centering in the clamping ring 300; the cylinder 400 is connected with the cylinder mounting base 610 through the cylinder base 611 to realize the axial positioning of the cylinder 400; the outer circumference of the cylinder 400 is provided with split clamping sleeves 620, the clamping sleeves 620 are matched with grooves on the outer circumferential surface of the cylinder 400, and the two clamping sleeves 620 are integrated through bolt clamping, so that radial positioning of the cylinder 400 is realized.

To optimize the structure of the present utility model, the clamping sleeve 620 includes a clamping sleeve support arm 621, a clamping sleeve suspension arm 622, a clamping sleeve suspension beam 623, a spacer 624, an adjustment sleeve 625, a lifting lug 631, a hanger plate I632, a hanger plate II 633 and a rib plate 634;

a clamping sleeve supporting arm 621 is arranged at the lower part of the clamping sleeve 620, wherein a guide post 630 penetrates through the clamping sleeve supporting arm 621, and the bottom of the clamping sleeve supporting arm 621 is connected with the inner wall of the clamping ring 300; the upper part of the clamping sleeve 620 is provided with a clamping sleeve hanging arm 622, a clamping sleeve supporting arm 621 is sleeved on a guide post 630, two sides of the clamping sleeve supporting arm 621 are provided with a spacing sleeve 624 and an adjusting sleeve 625, and the spacing sleeve 624 is connected with the inner wall of the clamping ring 300;

the positional relationship of the cylinders 400 vertically disposed above and below is described as an example: the outer side of the adjusting sleeve 625 is provided with a clamping sleeve hanging beam 623, and the clamping sleeve hanging beams 623 are respectively connected with the inner wall of the clamping ring 300; one end of the guide post 630 is connected to the cylinder mounting base 610, and the other end of the guide post passes through the hanging plate I632 and the hanging plate II 633 to be locked and fixed respectively;

the positional relationship of the cylinders 400 horizontally disposed left and right will be described by way of example: the outer side of the adjusting sleeve 625 is provided with a lifting lug 631, and the lifting lug 631 is respectively connected with a hanging plate I632 and a hanging plate II 633; one end of the guide post 630 is connected to the cylinder mounting base 610, and the other end of the guide post passes through the lifting lugs 631 to be locked and fixed, wherein the lifting lugs 631 are respectively connected to the lifting plates I632 and II 633;

wherein, between clamping sleeve support arm 621 and hanger plate I632, be equipped with the stability of floor 634 reinforcing structure between hanger plate I632 and hanger plate II 633.

In the embodiment of the utility model, the four-claw centering clamping adopts pneumatic clamping, so that the clamping automation is easy to realize, the requirement on a power source is low, the air pump and the small air compressor used for paint spraying in a workshop can be realized, and the universality and interchangeability of products are improved. Four cylinders 400 are adopted as the actuating element, four-point aligning automatic clamping is adopted for clamping, each clamping jaw 500 is driven by one cylinder 400, the extension and retraction of a piston rod on the cylinder 400 are remotely controlled by a multi-way reversing valve, the radial limiting is carried out by the clamping sleeve 620 when the clamping is realized, the clamping sleeve 620 is matched with an outer circular surface groove of the cylinder 400, and the two clamping sleeves 620 are integrated through bolt clamping. The other end of the clamping sleeve 620 is welded with the plate material and the collar 300 through angle steel, so that radial limiting becomes more reliable. The two guide posts 630 on the two sides play a role in axial rotation limiting, so that the clamping jaws are uniformly stressed in the clamping process, and deflection is avoided. The clamping force can also be adjusted in a visible manner, and for large tube plates, the clamping force can be adjusted to a specific value in a targeted manner, so that the whole device can be operated more safely. The pawl 500 is in adjustable threaded connection with the piston rod and can be manually adjusted to correct errors in the travel of the four cylinders 400.

To further optimize the structure of the present utility model, the rotary joint 700 includes a holder 710, a screw plug 720, a housing 730, a pipe joint 740, a spindle 750, a ball bearing 760, a seal cover 770, and a backbone seal ring 780;

the support 710 is used for installing and fixing the rotary joint 700 to the air compressor end;

screw plug 720 extends through seat 710 and secures housing 730 to seat 710;

the shell 730 is a hollow shaft sleeve, accommodates the ball bearing 760, the sealing cover 770 and the framework sealing ring 780, and is in sealing and screwing connection with the screw plug 720 near the end of the support 710;

the pipe joint 740 is arranged at the side part of the shell 730 adjacent to the support 710, is used as an air inlet pipe and is communicated with the inner cavity of the shell 730, and the outer end of the pipe joint 740 is connected with the air compressor;

the spindle 750 is a hollow stepped shaft forming a gas flow passage and rotates around the housing 730; the inner end of the ball bearing 760 is arranged in the inner cavity of the shell 730, the ball bearing 760 is assembled on the shaft diameter, and the sealing cover 770 and the framework sealing ring 780 are respectively arranged on two sides of the ball bearing 760; the outer end of the air cylinder 400 is provided with a connector serving as an exhaust pipe, the air cylinder 400 is connected with a hose, when the air cylinder 400 rotates, the mandrel 750 rotates along with the air cylinder, the pipe connector 740 is connected with an air compressor, and the rotary connector 700 forms rotary transition;

ball bearings 760 are mounted on the spindle 750, the spindle 750 is supported to rotate in the housing 730, the ball bearings 760 are in a group, and a through type pressure oil filling cup is arranged on the radial housing 730 between the two ball bearings 760 to be filled with lubricating oil;

the sealing cover 770 is disposed at the inner end of the spindle 750, clamped between the screw plug 720 and the ball bearing 760, and cooperates with the screw plug 720 to form a closed space, thereby maintaining the air tightness of the housing 730;

the backbone seal ring 780 fits within the interior cavity of the housing 730 distal from the seat 710, forming a seal between the spindle 750 and the housing 730.

In the embodiment of the present utility model, the common cylinder coupler cannot be connected to other pneumatic components because the collar 300 rotates on the set of brackets. Thus, this embodiment adds one component: the rotary joint 700 has the main function that the exhaust pipe joint can freely rotate in 360 degrees relative to the air inlet pipe joint. The principle of realizing the function is as follows: the exhaust pipe joint is used as a mandrel 750 to be matched with the inner ring of the ball bearing 760, and the intake pipe joint is used as a pipe joint 740 to be formed into a shell 730 to be matched with the outer ring of the ball bearing 760. This function complements the short plates formed by the rotation of collar 300, enabling remote control of the pneumatic clamping.

In the embodiment of the utility model, the collar 300 is selected from the most commonly used tank bodies in the existing pressure vessel production plants, the wall thickness is more than 10mm and less than 16mm, the width of the tank body is more than the supporting width of the upper carrier roller 200 of the bracket 100, and the diameter is recommended to be more than 1.8m and less than 3m; the clamping ring 300 is located on the carrier roller 200, the cylinder 400 is fixed by the cylinder body centering clamping bracket 600 by four claws, the supporting and rotating functions are complete, the self weight is great, and the fixing can be realized by matching iron with a certain weight.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (7)

1. An auxiliary bracket at the tail part of a pipe winding machine is characterized in that: comprising the following steps: the device comprises a bracket (100), a carrier roller (200), a clamping ring (300), a cylinder (400), a claw (500), a centering clamping bracket (600) and a rotary joint (700);

the carrier rollers (200) are symmetrically arranged on the bracket (100) to form a carrier roller group, the two carrier rollers (200) are jointly supported with a clamping ring (300), and the clamping ring (300) is located on the two carrier rollers (200) to roll; a centering clamping bracket (600) is arranged in the clamping ring (300), the centering clamping bracket (600) positions and installs four air cylinders (400) and clamping jaws (500) screwed on piston rods of the air cylinders (400), and the clamping jaws (500) center and pneumatically clamp the tail ends of the tube bundles of the tube-around heat exchanger; the cylinder (400) is connected to the pneumatic assembly by a swivel joint (700) such that the collar (300) rotates on the idler roller (200).

2. The auxiliary bracket at the tail of the pipe winding machine as claimed in claim 1, wherein:

the carrier roller (200) comprises a tile box (210), a carrier roller shaft (220), a carrier roller (230), a tapered roller bearing (240), an end cover (250) and a lock nut (260);

the tile box (210) is of an up-down split structure, the upper part is a tile cover, the lower part is a tile seat, and the tile seat is assembled on the bracket (100); the riding wheel shaft (220) is a stepped shaft, the tile box (210) clamps the shaft diameters at two ends of the riding wheel shaft (220), and the riding wheel (230) is assembled in the middle of the riding wheel shaft (220); tapered roller bearings (240) are embedded in the riding wheels (230), end covers (250) are screwed on two sides of the riding wheels (230), and the tapered roller bearings (240) are axially fixed by the end covers (250); one end of the riding wheel (230) is limited by the shaft shoulder of the riding wheel shaft (220), and the riding wheel (230) is locked and fixed by the locking nut (260) at the other end.

3. The auxiliary bracket at the tail of the pipe winding machine as claimed in claim 1, wherein:

the centering clamping bracket (600) comprises a cylinder mounting base (610), a clamping sleeve (620) and a guide post (630);

the inner cavity of the clamping ring (300) is provided with ten symmetrically arranged air cylinders (400), piston rods of the air cylinders (400) are connected with screw connection clamping claws (500) to perform four-center positioning on a tube bundle of the coiled tube heat exchanger, and the centering clamping bracket (600) is used for connecting and positioning the air cylinders (400) in the clamping ring (300); the upper part of the clamping claw (500) is provided with an arc slip for tightening a tube bundle of the tube heat exchanger, the lower part of the clamping claw is provided with a wing plate, the wing plate is sleeved on the guide post (630) and slides along the guide post (630), and the clamping claw (500) is connected with a piston rod of the air cylinder (400) by adopting adjustable threads;

an air cylinder mounting base (610) is arranged on the inner wall of the clamping ring (300), and guide posts (630) are symmetrically arranged on the air cylinder mounting base (610) to support the clamping jaw (500) for centering the clamping ring (300); the air cylinder (400) is connected with the air cylinder mounting base (610) through the air cylinder base (611) so as to realize the axial positioning of the air cylinder (400); the cylinder (400) is provided with split type clamping sleeves (620) on the outer circumference, the clamping sleeves (620) are matched with grooves on the outer circular surface of the cylinder (400), and the two clamping sleeves (620) are integrated through bolt clamping, so that radial positioning of the cylinder (400) is realized.

4. A tube winding machine tail auxiliary bracket according to claim 3, wherein:

the clamping sleeve (620) comprises a clamping sleeve supporting arm (621), a clamping sleeve hanging arm (622), a clamping sleeve hanging beam (623), a spacing sleeve (624), an adjusting sleeve (625), a lifting lug (631), a hanging plate I (632), a hanging plate II (633) and a rib plate (634);

a clamping sleeve supporting arm (621) is arranged at the lower part of the clamping sleeve (620), wherein a guide post (630) penetrates through the clamping sleeve supporting arm (621), and the bottom of the clamping sleeve supporting arm (621) is connected with the inner wall of the clamping ring (300); a clamping sleeve hanging arm (622) is arranged at the upper part of the clamping sleeve (620), a clamping sleeve supporting arm (621) is sleeved on the guide post (630), a spacing sleeve (624) and an adjusting sleeve (625) are arranged at two sides of the clamping sleeve supporting arm (621), and the spacing sleeve (624) is connected with the inner wall of the clamping ring (300);

in a cylinder (400) vertically arranged up and down: the outer side of the adjusting sleeve (625) is provided with a clamping sleeve hanging beam (623), and the clamping sleeve hanging beam (623) is respectively connected with the inner wall of the clamping ring (300); one end of the guide post (630) is connected to the cylinder mounting base (610), and the other end of the guide post respectively penetrates through the hanging plate I (632) and the hanging plate II (633) to be locked and fixed;

in a cylinder (400) horizontally disposed in the left and right: the outer side of the adjusting sleeve (625) is provided with a lifting lug (631), and the lifting lug (631) is respectively connected with a lifting plate I (632) and a lifting plate II (633); one end of the guide post (630) is connected to the cylinder mounting base (610), and the other end of the guide post is locked and fixed through the lifting lugs (631), wherein the lifting lugs (631) are respectively connected to the lifting plates I (632) and II (633);

wherein, between centre gripping cover support arm (621) and hanger plate I (632), be equipped with floor (634) reinforced structure's stability between hanger plate I (632) and hanger plate II (633).

5. The auxiliary bracket at the tail of the pipe winding machine as claimed in claim 1, wherein:

the rotary joint (700) comprises a support (710), a screw plug (720), a shell (730), a pipe joint (740), a mandrel (750), a ball bearing (760), a sealing cover (770) and a framework sealing ring (780);

the support (710) is used for installing and fixing the rotary joint (700) to the air compressor end;

the screw plug (720) penetrates through the support (710) and fixes the shell (730) on the support (710);

the shell (730) is a hollow shaft sleeve, accommodates the ball bearing (760), the sealing cover (770) and the framework sealing ring (780), and is in sealing threaded connection with the screw plug (720) close to the end of the support (710);

the pipe joint (740) is arranged at the side part of the shell (730) close to the support (710), is used as an air inlet pipe and is communicated with the inner cavity of the shell (730), and the outer end of the pipe joint (740) is connected with the air compressor;

the mandrel (750) is a hollow stepped shaft to form a gas flow passage and rotates around the shell (730); the inner end of the ball bearing is arranged in the inner cavity of the shell (730), a ball bearing (760) is assembled on the shaft diameter, and a sealing cover (770) and a framework sealing ring (780) are respectively arranged on two sides of the ball bearing (760); the outer end of the air cylinder is provided with a connector serving as an exhaust pipe, the air cylinder is connected with the air cylinder (400) through a hose, when the air cylinder (400) rotates, the mandrel (750) rotates along with the air cylinder, the pipe connector (740) is connected with an air compressor, and the rotary connector (700) forms rotary transition;

the ball bearings (760) are arranged on the mandrel (750), the mandrel (750) is supported to rotate in the shell (730), the ball bearings (760) are in a group, and a through type pressure oil filling cup is arranged on the radial shell (730) between the two ball bearings (760) and is filled with lubricating oil;

the sealing cover (770) is arranged at the inner end of the mandrel (750), clamped between the screw plug (720) and the ball bearing (760) and matched with the screw plug (720) to form a closed space, so that the air tightness of the shell (730) is maintained;

the backbone seal ring (780) fits within the interior cavity of the housing (730) away from the seat (710) to form a seal between the spindle (750) and the housing (730).

6. The auxiliary bracket at the tail part of the pipe winding machine as claimed in claim 5, wherein the auxiliary bracket is characterized in that:

the mandrel (750) is matched with the inner ring of the ball bearing (760) to serve as an exhaust pipe joint, the pipe joint (740) is matched with the outer ring of the ball bearing (760) in the shell (730) to serve as an air inlet pipe joint, and the exhaust pipe joint can freely rotate in 360 degrees relative to the air inlet pipe joint.

7. The auxiliary bracket at the tail of the pipe winding machine as claimed in claim 1, wherein:

the included angle between the roller carrier group and the clamping ring (300) in rolling contact is 60 degrees.