Auxiliary supporting mechanism for steel belt pipe welding

Abstract

The invention relates to the technical field of auxiliary supporting pieces for steel belt pipe welding, in particular to an auxiliary supporting mechanism for steel belt pipe welding, which comprises a base, two supporting pieces are arranged at the top end of the base, each supporting piece comprises a supporting column fixedly connected with the base, and the top end of each supporting column is connected with a supporting plate. Two movable blocks are symmetrically and movably installed on the surface of the supporting plate through sliding grooves, a positioning plate is connected to the top ends of the movable blocks, and the two movable blocks are arranged on the surfaces of the opposite threaded shafts in a sleeving mode through threads. The driving motor serves as a power source, the gear is controlled to rotate on the surface of the gear ring end of the ring frame, the bristle set is driven to rotate around the surface of the steel belt pipe, the sanding plate rubs the surface of the steel belt pipe, and steel bristles of the steel belt pipe can generate burrs and scratches on the heating surface of the steel belt pipe; the friction force and the contact surface of the heat-shrinkable bag covering and shrinking on the surface of the steel belt pipe are increased, the butt joint effect of the butt joint of the heat-shrinkable belt and the steel belt pipe is effectively improved, and the probability that the heat-shrinkable bag falls off in the later period is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of auxiliary support mechanisms for steel strip pipe welding, and in particular to an auxiliary support mechanism for steel strip pipe welding. Background Art

[0002] Steel belt pipe, also known as steel belt reinforced PE spiral corrugated pipe, is a double-walled spiral corrugated pipe with a high-density polyethylene (PE) base. Steel belts coated with adhesive resin are formed into corrugated shapes as the primary support structure, and the pipe is wrapped and laminated with polyethylene to form an integral whole. This pipe combines the flexibility of plastic pipe with the rigidity of metal pipe, resulting in high hoop stiffness and excellent hydraulic properties.

[0003] Welding is a critical step in the manufacturing process of steel strip pipes, and its quality directly affects the performance and service life of the final product. Traditional steel strip pipe welding methods mainly rely on manual operation, requiring auxiliary support devices to elevate the steel strip pipe during welding. During welding, a heat shrink bag is first placed on the surface of one of the steel strip pipes. After welding, the two steel strip pipes are butted together, the surfaces of the steel strip pipes are wiped with a towel, and the weld is performed at the interface using an extrusion welder with welding rods. After the heat shrink bag is placed on the joint of the two steel strip pipes, it is heated and melted with a spray gun. However, traditional auxiliary support devices only provide support and elevation, with limited functionality. During the welding process, the steel strip pipe itself is prone to deformation and displacement. The outer surface of the steel strip pipe is smooth. Relying solely on heating and heat shrinking bag to melt the heat shrink bag, the friction between the heat shrink bag and the steel strip pipe surface is limited, making it difficult to ensure the heat shrink bag and the steel strip pipe are sealed together. Later, the heat shrink bag and the steel strip pipe are prone to separation and detachment during use. Therefore, an auxiliary support mechanism for steel strip pipe welding is needed to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems raised in the above background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion. The swing arm ends up being rotated by the hook portion. The swing arm ends up being rotated by the hook portion. The frame is connected with an axle ring on the right side of the ring frame, and a movable sleeve is slidably installed on the surface of the axle ring, and a plate seat is connected to the left side of the movable sleeve, and two vertical plate ends are provided on the surface of the plate seat, and a gear is provided for the rotation installation machine in the distance between the vertical plate ends. The gear shaft end is installed with a driving motor after passing through the vertical plate end of the plate seat, and a brush group is provided on the right side of the movable sleeve, and the brush group includes a shaft rod, and the top of the shaft rod is connected with a clamping plate, and the clamping plate is embedded in the inside of the clamping sleeve through a clamping groove, and a sanding plate is installed on the top of the clamping sleeve. Through the design of opposing external threads on the surfaces of the opposing threaded shafts, the two movable blocks can be controlled to move relative to each other on the surfaces of the opposing threaded shafts when the opposing threaded shafts rotate, thereby facilitating the control of the relative movement of the two positioning plates and changing the adjustment distance between the two positioning plates.

[0007] Preferably, a trapezoidal inner groove is provided on the inner side of the positioning plate, and a number of inner strips are equidistantly arranged on the inner wall of the trapezoidal inner groove. The inner strips are made of silicone material. The trapezoidal inner groove design of the positioning plate creates two inclined surfaces on the inner side of the positioning plate. The two inclined surfaces can limit the two sides of the steel belt pipe, thereby adapting to the placement of various models of steel belt pipes. The inner strips can limit the spiral protrusions of the steel belt pipe.

[0008] Preferably, an extension plate end is provided on the right side of the positioning plate, and the length of the extension plate end is flush with the right side of the support plate. A triangular bar is connected to the inner side of the bottom end of the positioning plate, and an extension plate end is provided on one side of the positioning plate, which can prevent the steel belt pipe from bending left and right due to external force during the support and suspension process, further improve the auxiliary support effect on the steel belt pipe, and effectively reduce the probability of deviation at the joint due to deformation and deviation of the steel belt pipe.

[0009] Preferably, a limit block is provided on the right side of the inner wall of the support plate guide groove, and the limit block is movably installed on the inner side of the pull-out plate through the limit groove. The limit block end of the support plate is inserted into the limit groove on the surface of the pull-out plate, which can prevent the pull-out plate from detaching from the inside of the support plate during pulling.

[0010] Preferably, the vertical cross-section of the pull-out plate is designed as a T-shaped structure, and a handle is connected to the outside of one of the pull-out plates. The design of the handle makes it convenient to hold and pull the handle when the sanding plate contacts the surface of the steel belt tube. The movement of the pull-out plate can change the overall position of the bristle group, so that the sanding plate can scrape the rough surface of different areas while moving.

[0011] Preferably, balls are movably installed at the upper and lower ends of the inner side of the movable sleeve through ball grooves, and a guide groove adapted to the balls is opened on the surface of the collar, which is buckled on the surface of the collar through the movable sleeve. When the movable sleeve moves on the surface of the collar, the movable sleeve can drive the balls to roll in the guide groove on the surface of the collar, thereby ensuring the smoothness of the movement of the movable sleeve.

[0012] Preferably, a number of rubber blocks are equidistantly arranged on both sides of the inner wall of the sleeve, and the rubber blocks are buckled on the side of the card plate through trapezoidal grooves. When the sleeve is slidably sleeved on the surface of the card plate, the rubber blocks on the inside of the sleeve can be buckled into the trapezoidal grooves on the side of the card plate, thereby realizing rapid installation of the sanding board.

[0013] Preferably, the bottom end of the clamping plate is connected to a shaft rod, and the shaft rod is inserted into the shaft seat, the bottom end of the shaft seat is connected to a side connecting plate, and a docking plate end is provided on the left side of the side connecting plate, and the side connecting plate docking plate end is fixed to the right side of the movable sleeve by bolts, and the side connecting plate is fixed by bolts so that the side connecting plate can be suspended, which is convenient for disassembly and assembly of the brush group as a whole. A circular opening is provided at the top of the shaft seat, which facilitates the free and stable movement of the shaft rod.

[0014] Preferably, the shaft rod consists of a cylindrical end and a bottom square plate end, the bottom end of the square plate end of the shaft rod is connected to a supporting spring, and the bottom end of the supporting spring is fixedly connected to the inner end face of the shaft seat, and a locking bolt is inserted through a threaded hole at the top right side of the shaft seat, and the end of the locking bolt shaft is pressed against the surface of the shaft rod. When the locking bolt is twisted, the shaft rod is free of restriction, and the elastic force of the supporting spring pushes the shaft rod to push the clamping plate while moving, and the bristles of the sanding plate are controlled to apply pressure to the surface of the steel strip tube in the heating section. The sanding plate moves on the surface of the steel strip tube to form a certain rough surface area, which is convenient for the shrinkage and hot melt bonding of the heat shrink bag in the later stage.

[0015] The present invention has at least the following beneficial effects:

[0016] 1. By setting movable parts and brush groups, the support plate is made functional to achieve scraping of the surface of the heating section of the steel strip tube. Compared with the traditional structure, this device uses a driving motor as a power source to control the gear to rotate on the toothed ring end surface of the ring frame, driving the brush group to rotate around the surface of the steel strip tube, so that the sanding plate rubs the surface of the steel strip tube. The steel bristles of the steel strip tube can produce burrs and scratches on the heating surface of the steel strip tube, increase the friction and contact surface of the heat shrink bag covering the steel strip tube surface, effectively improve the docking effect of the heat shrink tape and the steel strip tube, and reduce the chance of the heat shrink bag falling off in the later stage.

[0017] 2. By setting up the card plate, card sleeve and sanding board, the adaptation and replacement of the sanding board can be realized. The device adopts a plug-in design between the card plate and the card sleeve, so that the sanding board can be installed sideways, which is convenient for replacing the sanding board according to needs in the future. The sanding board has a variety of styles and can be selected from materials such as cleaning sponges and steel brushes, so as to facilitate the cleaning or roughening of the outer area of ​​the joint of the two steel belt tubes to ensure the hot melt jointing effect of the heat shrink bag.

[0018] 3. By setting up support parts, the steel belt pipe can be lifted, supported and constrained. This device controls two positioning plates to adapt and clamp the steel belt pipe through two relatively movable blocks. The inner strip plate on the inner side of the positioning plate limits the threaded protrusion of the steel belt pipe. An extended plate end is provided on one side of the positioning plate to prevent the steel belt pipe from bending left and right during the support and suspension process, further improving the auxiliary support effect on the steel belt pipe and effectively reducing the probability of deviation at the joint caused by deformation and offset of the steel belt pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the external structure of an auxiliary support mechanism for steel strip pipe welding proposed by the present invention;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of a support member in an auxiliary support mechanism for steel strip pipe welding proposed by the present invention;

[0022] Figure 3 This is a schematic diagram of the three-dimensional disassembled structure of a support member in an auxiliary support mechanism for steel strip pipe welding proposed by the present invention;

[0023] Figure 4 This is a schematic diagram of the partially disassembled structure of a support member in an auxiliary support mechanism for steel strip pipe welding proposed by the present invention;

[0024] Figure 5 This is a schematic bottom-up structural diagram of a movable part in an auxiliary support mechanism for steel strip pipe welding proposed by the present invention;

[0025] Figure 6 This is a schematic diagram of the partially disassembled structure of the movable parts in the auxiliary support mechanism for steel strip pipe welding proposed by the present invention;

[0026] Figure 7 This is a schematic diagram of the connection structure of the plate seat, gears and drive motor in the auxiliary support mechanism for steel strip pipe welding proposed by the present invention;

[0027] Figure 8 This is a schematic diagram of the internal disassembled structure of a brush group in an auxiliary support mechanism for steel strip pipe welding proposed by the present invention.

[0028] In the figure: 1. Base; 2. Support member; 21. Pillar; 22. Support plate; 23. Opposite threaded shaft; 24. Movable block; 25. Positioning plate; 26. Inner strip; 27. Triangle strip; 3. Movable member; 31. Pull-out plate; 32. Ring frame; 33. Axle ring; 34. Handle; 35. Movable sleeve; 36. Plate seat; 37. Gear; 38. Drive motor; 39. Ball; 4. Brush set; 41. Side plate; 42. Locking bolt; 43. Axle seat; 44. Shaft; 45. Support spring; 46. Clamping plate; 47. Clamping sleeve; 48. Sanding board. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] Reference Figure 1-8, an auxiliary support mechanism for welding steel strip pipes, including a base 1, two support members 2 are provided at the top of the base 1, the support member 2 includes a pillar 21 connected and fixed to the base 1, and the top of the pillar 21 is connected to a support plate 22, the surface of the support plate 22 is symmetrically and movably installed with two movable blocks 24 through a slide groove, and the top of the movable block 24 is connected to a positioning plate 25, the two movable blocks 24 are arranged on the surface of the opposite threaded shaft 23 through a threaded sleeve, one end of the opposite threaded shaft 23 is rotatably installed on the inner wall of the slide groove of the support plate 22 through a bearing seat, and the other end of the opposite threaded shaft 23 is provided with a knob end after passing through the support plate 22, and a movable member 3 is symmetrically and movably installed on the side of one of the support plates 22 through a guide groove, and the movable member 3 includes It includes two pull-out plates 31 movably installed in the guide grooves on the sides of the support plate 22. The two pull-out plates 31 are connected to a ring frame 32 on the right side, and a shaft ring 33 is connected to the right side of the ring frame 32. A movable sleeve 35 is slidably installed on the surface of the shaft ring 33. A plate seat 36 is connected to the left side of the movable sleeve 35, and two vertical plate ends are provided on the surface of the plate seat 36, and a gear 37 is provided for the rotating installation machine in the distance between the vertical plate ends. The shaft end of the gear 37 passes through the vertical plate end of the plate seat 36 and is equipped with a drive motor 38. A brush group 4 is provided on the right side of the movable sleeve 35, and the brush group 4 includes a shaft rod 44. A clamping plate 46 is connected to the top of the shaft rod 44, and the clamping plate 46 is embedded in the inside of the clamping sleeve 47 through the clamping groove. A sanding plate 48 is installed on the top of the clamping sleeve 47.

[0031] A trapezoidal inner groove is formed on the inner side of the positioning plate 25 , and a plurality of inner strips 26 are equidistantly arranged on the inner wall of the trapezoidal inner groove. The inner strips 26 are made of silicone.

[0032] An extension plate end is provided on the right side of the positioning plate 25 , and the length of the extension plate end is flush with the right side of the support plate 22 . A triangular bar 27 is connected to the inner side of the bottom end of the positioning plate 25 .

[0033] A limiting block is provided on the right side of the inner wall of the guide groove of the support plate 22 , and the limiting block is movably installed on the inner side of the pull-out plate 31 through the limiting groove.

[0034] The vertical cross-section of the pull-out plate 31 is designed to be T-shaped, and a handle 34 is connected to the outer side of one of the pull-out plates 31 .

[0035] Balls 39 are movably mounted on the upper and lower ends of the inner side of the movable sleeve 35 through ball grooves, and a guide groove adapted to the balls 39 is opened on the surface of the shaft ring 33.

[0036] A number of rubber blocks are equidistantly arranged on both sides of the inner wall of the clamping sleeve 47 , and the rubber blocks are buckled on the sides of the clamping plate 46 through trapezoidal grooves.

[0037] The bottom end of the clamping plate 46 is connected to the shaft rod 44, and the shaft rod 44 is inserted into the shaft seat 43. The bottom end of the shaft seat 43 is connected to the side connecting plate 41, and a docking plate end is provided on the left side of the side connecting plate 41, and the docking plate end of the side connecting plate 41 is fixed to the right side of the movable sleeve 35 by bolts.

[0038] The shaft rod 44 consists of a cylindrical end and a bottom square plate end. The bottom end of the square plate end of the shaft rod 44 is connected to a support spring 45, and the bottom end of the support spring 45 is connected and fixed to the inner end surface of the shaft seat 43. A locking bolt 42 is inserted through a threaded hole at the top right side of the shaft seat 43, and the end of the locking bolt 42 shaft is pressed against the surface of the shaft rod 44.

[0039] By designing the opposing external threads on the surfaces of the opposing threaded shafts 23, the two movable blocks 24 can be controlled to move relative to each other on the surfaces of the opposing threaded shafts 23 when the opposing threaded shafts 23 rotate, thereby conveniently controlling the relative movement of the two positioning plates 25 and changing and adjusting the spacing between the two positioning plates 25. At the same time, the concave trapezoidal grooves of the positioning plates 25 cooperate with the inner strips 26, and compared with the traditional straight plate limiter, this structure can provide a better limiting effect, increase the friction on the steel belt tube, and effectively reduce the probability of the steel belt tube rolling and rotating in place, thereby ensuring the welding effect of the two steel belt tubes. The trapezoidal inner groove design of the positioning plate 25 creates two inclined surfaces on the inner side of the positioning plate 25, which can limit the two sides of the steel belt tube through the two inclined surfaces, thereby adapting to the placement of various types of steel belt tubes. The inner strips 26 can limit the spiral protrusions of the steel belt tube. At the same time, the silicone material of the inner strips 26 can reduce the wear on the steel belt tube during the limit.

[0040] An extended plate end is provided on one side of the positioning plate 25, which can prevent the steel strip pipe from bending left and right due to external force during the support and suspension process, further improve the auxiliary support effect on the steel strip pipe, and effectively reduce the probability of deviation at the joint caused by the deformation and deviation of the steel strip pipe. The triangular bar 27 design at the bottom end of the positioning plate 25 can provide more clamping contact surfaces, ensure the docking stability of the steel strip pipe, and make it have a better auxiliary support effect. The limit block end of the support plate 22 is inserted into the limit groove on the surface of the pull-out plate 31, which can prevent the pull-out plate 31 from detaching from the inside of the support plate 22 during pulling, thereby affecting the cleaning and rough surface manufacturing effect of the sanding plate 48 on the surface of the steel strip pipe.

[0041] The T-slot design of the support plate 22 can facilitate the stable pulling and moving of the pull-out plate 31, and prevent the pull-out plate 31 from shifting sideways and flipping during movement. The design of the handle 34 makes it convenient to hold and pull the handle 34 when the sanding plate 48 contacts the surface of the steel belt tube. The movement of the pull-out plate 31 can change the overall position of the bristle group 4, so that the sanding plate 48 can scrape the rough surface of different areas during movement. The movable sleeve 35 is buckled on the surface of the shaft ring 33. When the movable sleeve 35 moves on the surface of the shaft ring 33, the movable sleeve 35 can drive the ball 39 to roll in the guide groove on the surface of the shaft ring 33, thereby ensuring the smoothness of the movement of the movable sleeve 35.

[0042] When the clamping sleeve 47 is slidably sleeved on the surface of the card plate 46, the rubber block inside the clamping sleeve 47 can be buckled into the trapezoidal groove on the side of the card plate 46, so as to realize the rapid installation of the sanding plate 48. At the same time, the inclined edge design of the trapezoidal groove of the card plate 46 can facilitate the pulling and moving of the rubber block inside the clamping sleeve 47. The side connecting plate 41 is fixed by bolts so that the side connecting plate 41 can be suspended, which is convenient for the disassembly and assembly of the brush group 4 as a whole. A circular opening is provided on the top of the shaft seat 43 , which can facilitate the free and stable movement of the shaft rod 44, and the shaft rod 44 moves in the shaft seat 43, and the sanding plate 48 can be controlled to fit on the surface of the steel belt pipe. By rotating the locking bolt 42, the axial end of the locking bolt 42 can be controlled to squeeze and contact the surface of the shaft rod 44, and then the shaft rod 44 is locked, so that the shaft rod 44 can be stably retracted in the shaft seat 43. When the locking bolt 42 is rotated loose, the shaft rod 44 can be quickly popped out under the elastic force of the support spring 45.

[0043] The cylindrical end design of the upper section of the shaft 44 can ensure the smoothness of the shaft 44 in the shaft seat 43. The design of the square plate end at the bottom of the shaft 44 can prevent the shaft 44 from being pulled out from between the shaft seat 43 during movement. The shaft seat 43 is split from the middle and is assembled by two opposite sections. The fixing method can be bolt docking or snap docking, etc., which will not be described in detail here. When the locking bolt 42 is twisted to make the shaft 44 unrestricted, the shaft 44 can push the clamping plate 46 during movement under the elastic force of the support spring 45, and the bristles of the sanding plate 48 are controlled to apply pressure to the surface of the steel belt tube in the heating section. The sanding plate 48 moves on the surface of the steel belt tube to form a certain rough surface area, which is convenient for the shrinkage and hot melt bonding of the heat shrink bag in the later stage.

[0044] Working principle: According to the attached Figure 3 With attached Figure 4 As shown, during use, the steel strip tube is placed on the surface of the support plate 22, and the support plate 22 can be used to assist the steel strip tube. By twisting and rotating the opposing threaded shafts 23, the opposing threaded shafts 23 can control the relative movement of the two movable blocks 24 through the oppositely arranged external threads, so that the movable blocks 24 drive the positioning plates 25 to move, and the steel strip tube can be supported by the two positioning plates 25. At this time, the inner strip plate 26 is made of a flexible material. The inner strip plate 26 supports the steel strip tube and can facilitate the steel strip tube to be pushed left and right, thereby controlling the distance between the butt ends of the left and right steel strip tubes.

[0045] Secondly, before the two steel strip pipe end faces are fitted together, a heat shrink bag can be placed on the surface of one of the steel strip pipes, and the hot melt welding machine and welding rod are used to weld the butt joint of the steel strip pipes. After welding, the spray gun is used to heat the butt joint side of the steel strip pipe. When the surface of the steel strip pipe is heated to 70 degrees, the heat is applied according to the attached Figure 6 , Attachment Figure 7 With attached Figure 8As shown, the handle 34 can be gripped and pulled to move the pull-out plate 31 in the guide groove on the side of the support plate 22, thereby changing the position of the bristle group 4. At this time, the locking bolt 42 is rotated to loosen the shaft 44. The shaft 44 can be pushed to move under the elastic force of the support spring 45. After the shaft 44 moves, the bristles of the sanding plate 48 are controlled to contact the surface of the steel belt tube through the cooperation of the clamping plate 46 and the clamping sleeve 47;

[0046] Finally, according to the attached Figure 6 With attached Figure 7 As shown, by energizing the drive motor 38 through the power cord to start the drive motor 38, the shaft end of the drive motor 38 drives the gear 37 to rotate, and the teeth of the gear 37 cooperate with the teeth in the ring groove of the ring frame 32, controlling the gear 37 to roll on the tooth surface of the ring frame 32. During the movement of the gear 37, the movable sleeve 35 can synchronously drive the sliding sleeve 35 to slide on the surface of the shaft ring 33. During the movement of the movable sleeve 35, the side connecting plate 41 can drive the shaft seat 43 to move, so that the shaft seat 43 cooperates with the shaft rod 44 to drive the clamping plate 46 to move. The clamping plate 46 can cooperate with the clamping sleeve 47, and the sanding plate 48 can be driven to move through the clamping sleeve 47, so that the bristles of the sanding plate 48 rub the heated area on the surface of the steel strip tube, thereby forming a burr surface on the surface of the steel strip tube. At this time, the heat shrink bag can be pulled and moved, and the heat shrink bag can be driven to be set on the connecting end surface of the two steel strip tubes. At the same time, the heat shrink bag is heated by the spray gun so that the heat shrink bag can be quickly hot-melted and covered with the steel strip tube, reducing the chance of the heat shrink bag falling off in the later stage.

[0047] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary support mechanism for steel strip pipe welding, comprising a base (1), characterized in that: Two support members (2) are provided at the top of the base (1), and the support member (2) includes a pillar (21) connected and fixed to the base (1), and the top of the pillar (21) is connected to a support plate (22), and two movable blocks (24) are symmetrically and movably installed on the surface of the support plate (22) through a slide groove, and the top of the movable block (24) is connected to a positioning plate (25), and the two movable blocks (24) are arranged on the surface of the opposite threaded shaft (23) through a threaded sleeve, and one end of the opposite threaded shaft (23) is rotatably installed on the inner wall of the slide groove of the support plate (22) through a bearing seat, and the other end of the opposite threaded shaft (23) is provided with a knob end after passing through the support plate (22), and a movable member (3) is symmetrically and movably installed on the side of one of the support plates (22) through a guide groove; The movable member (3) comprises two pull-out plates (31) movably mounted in the guide grooves on the sides of the support plate (22); the right sides of the two pull-out plates (31) are connected to a ring frame (32), and the right side of the ring frame (32) is connected to a shaft ring (33); a movable sleeve (35) is slidably mounted on the surface of the shaft ring (33); the left side of the movable sleeve (35) is connected to a plate seat (36), and the surface of the plate seat (36) is provided with two vertical plate ends, and a gear (37) is provided for rotating the installation machine in the interval between the vertical plate ends; the shaft end of the gear (37) passes through the vertical plate end of the plate seat (36) and is then provided with a driving motor (38); a brush group (4) is provided on the right side of the movable sleeve (35); The bristle group (4) comprises a shaft (44), the top end of the shaft (44) is connected to a clamping plate (46), and the clamping plate (46) is embedded in a clamping sleeve (47) through a clamping groove, and a sanding plate (48) is installed on the top end of the clamping sleeve (47).

2. The auxiliary support mechanism for steel strip pipe welding according to claim 1, characterized in that: A trapezoidal inner groove is provided on the inner side of the positioning plate (25), and a plurality of inner strips (26) are equidistantly provided on the inner wall of the trapezoidal inner groove. The inner strips (26) are made of silica gel.

3. The auxiliary support mechanism for steel strip pipe welding according to claim 2, characterized in that: An extension plate end is provided on the right side of the positioning plate (25), and the length of the extension plate end is flush with the right side of the support plate (22). A triangular bar (27) is connected to the inner side of the bottom end of the positioning plate (25).

4. The auxiliary support mechanism for steel strip pipe welding according to claim 3, characterized in that: A limiting block is provided on the right side of the inner wall of the guide groove of the support plate (22), and the limiting block is movably installed on the inner side of the pull-out plate (31) through the limiting groove.

5. The auxiliary support mechanism for steel strip pipe welding according to claim 4, characterized in that: The vertical cross-section of the pull-out plate (31) is designed to be T-shaped, and a handle (34) is connected to the outside of one of the pull-out plates (31).

6. The auxiliary support mechanism for steel strip pipe welding according to claim 1, characterized in that: Balls (39) are movably mounted on the upper and lower ends of the inner side of the movable sleeve (35) through ball grooves, and a guide groove adapted to the ball (39) is opened on the surface of the shaft ring (33).

7. The auxiliary support mechanism for steel strip pipe welding according to claim 1, characterized in that: A plurality of rubber blocks are equidistantly arranged on both sides of the inner wall of the clamping sleeve (47), and the rubber blocks are clamped on the sides of the clamping plate (46) through trapezoidal grooves.

8. The auxiliary support mechanism for steel strip pipe welding according to claim 7, characterized in that: The bottom end of the clamping plate (46) is connected to a shaft rod (44), and the shaft rod (44) is inserted into the shaft seat (43). The bottom end of the shaft seat (43) is connected to a side connecting plate (41), and a docking plate end is provided on the left side of the side connecting plate (41), and the docking plate end of the side connecting plate (41) is docked and fixed with the right side of the movable sleeve (35) by bolts.

9. The auxiliary support mechanism for steel strip pipe welding according to claim 8, characterized in that: The shaft rod (44) is composed of a cylindrical end and a bottom square plate end. The bottom end of the square plate end of the shaft rod (44) is connected to a support spring (45), and the bottom end of the support spring (45) is connected and fixed to the inner end surface of the shaft seat (43). A locking bolt (42) is inserted through a threaded hole at the top right side of the shaft seat (43), and the end of the locking bolt (42) is pressed against the surface of the shaft rod (44).

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