Reusable steel structure pipe truss butt welding straightening device

Abstract

The invention discloses a reusable steel structure pipe truss butt welding straightening device. The reusable steel structure pipe truss butt welding straightening device comprises four clamping pieces which are evenly arranged along the periphery of a first pipeline. Each hoop piece comprises a fixing plate and a positioning plate, the fixing plate is arranged in an arc shape, the two ends of the fixing plate are detachably connected with the ends of the fixing plates in the adjacent hoop pieces, and the fixing plates in the four hoop pieces are connected end to end to define a cylindrical cavity structure for containing the first pipeline; a positioning plate is fixedly connected to the middle of the outer side wall of the fixing plate, and one end of the positioning plate extends out of the outer side of the fixing plate and then is connected with an extrusion part; and the extrusion parts on the four positioning plates are correspondingly arranged, and the extrusion directions of the four extrusion parts are consistent with the radial direction of the first pipeline. According to the pipe truss butt-joint straightening method, welding, cutting, polishing and other operations are not needed in the pipe truss butt-joint straightening operation procedure, the number of machining procedures is small, the welding progress is high, and the welding speed of the steel structure pipe truss is effectively increased.

Description

Technical Field

[0001] The invention relates to the field of truss welding, in particular to a reusable steel structure pipe truss butt welding straightening device. Background Art

[0002] The quality requirements for butt welding of steel structure tube trusses are high, and the design requirements are all first-class welds, so the construction quality is particularly important. The traditional butt welding straightening method uses 4 temporary steel plates on site, which are equally arranged along the outer edge of the tube truss steel pipe. They are first welded on one side of the tube truss steel pipe; after the other side of the steel pipe is adjusted to the specified position, it is welded together with the steel plate to temporarily fix the two butt-jointed steel pipes; the traditional method requires temporary welding of 4 steel plates with a total of 8 welding points on the two butt-jointed steel pipes. After the butt welding of the steel pipes is completed, the 4 fixed steel plates need to be cut off, the 8 welding points on the surface of the steel pipes need to be polished, and then the anti-corrosion paint needs to be applied.

[0003] The traditional method has the following three disadvantages: 1. There are many processes and slow progress, which seriously reduces the welding rate of steel structure pipe trusses; 2. It is easy to leave quality risks and the appearance quality is poor; 3. The traditional method is only suitable for the butt-joint straightening operation of pipe trusses with the same pipe diameter, and cannot be used for the butt-joint straightening operation of pipe trusses with variable diameter structures, and its applicability is relatively narrow. Summary of the invention

[0004] The object of the present invention is to provide a reusable steel structure pipe truss butt welding straightening device with simple structure and convenient use in view of the above problems.

[0005] In order to achieve the above object, the technical solution of the present invention is: A reusable steel structure pipe truss butt welding straightening device comprises four clamps evenly arranged along the outer circumference of a first pipeline; the clamps comprise a fixing plate and a positioning plate, the fixing plate is arranged in an arc shape, the two ends of the fixing plate are detachably connected to the fixing plate ends in adjacent clamps, and the fixing plates in the four clamps are connected end to end to form a cylindrical cavity structure for accommodating the first pipeline; a positioning plate is fixedly connected to the middle part of the outer side wall of the fixing plate, one end of the positioning plate extends outward from the fixing plate and is connected to an extrusion piece; the extrusion pieces on the four positioning plates are arranged correspondingly and the extrusion direction of the four extrusion pieces is consistent with the radial direction of the first pipeline.

[0006] Furthermore, both ends of the fixed plate in the arc direction are fixedly connected with bent plates, and bolt holes are provided on the bent plates; the bent plates on adjacent fixed plates are connected by fastening bolts passing through the bolt holes to achieve the end-to-end connection operation between the four fixed plates.

[0007] Furthermore, the plane to which the positioning plate belongs is consistent with the radial direction of the first pipe, the bottom of one end of the positioning plate is fixedly connected to the outer wall of the fixed plate, and the other end of the positioning plate extends out of the outside of the fixed plate and is connected to the extrusion member; an inclined avoidance surface is provided at the bottom end of the positioning plate, the inclined avoidance surface is provided on the outside of the fixed plate and the inclined avoidance surface gradually rises from one end close to the fixed plate to one end close to the extrusion member.

[0008] Furthermore, an avoidance groove is provided at the bottom end of the positioning plate, and the avoidance groove is provided at the bottom of one end of the inclined avoidance surface close to the fixing plate.

[0009] Furthermore, the extrusion component is a hydraulic support rod, the length direction of the hydraulic support rod is consistent with the radial direction of the first pipe, the outer wall of the hydraulic support rod is fixedly connected to the end of the positioning plate, and the push rod of the hydraulic support rod performs an extrusion action toward the axis of the first pipe.

[0010] Furthermore, a reinforcement plate is provided at the top of the positioning plate. The reinforcement plate is triangular in shape, the length direction of the reinforcement plate is consistent with the length direction of the positioning plate, the bottom end of the reinforcement plate is connected to the positioning plate, the top of the reinforcement plate is inclined in the length direction and gradually rises from the end of the top of the reinforcement plate close to the fixed plate to the end of the top of the reinforcement plate close to the extrusion part, the top of the reinforcement plate is arc-shaped in the thickness direction and an external thread is provided on the arc outer wall of the top of the reinforcement plate; the four reinforcement plates are jointly provided with a screw sleeve on the outer side, the screw sleeve is in the shape of a conical sleeve, the inner wall of the screw sleeve is provided with an internal thread and is sleeved on the outer side of the four reinforcement plates and connected to the external thread on the arc outer wall of the reinforcement plate through the internal thread.

[0011] Furthermore, the top end of the positioning plate and the bottom end of the reinforcement plate are integrally formed or fixedly connected.

[0012] Furthermore, the bottom of one end of the reinforcement plate close to the fixed plate is connected to the pin shaft at the top of the positioning plate, and the bottom end of the reinforcement plate rotates and moves toward the top of the positioning plate under the screwing and squeezing action of the screwing sleeve.

[0013] Furthermore, the extrusion member includes a guide sleeve and a guide column. The axial direction of the guide sleeve is consistent with the radial direction of the first pipe. The side wall of the guide sleeve is fixedly connected to one end of the positioning plate. The guide column is arranged in the guide sleeve and can slide along the axial direction of the guide sleeve. After the top end of the guide column passes through the guide sleeve, it contacts the bottom end of the reinforcement plate. After the bottom end of the guide column passes through the guide sleeve, it performs an extrusion action toward the axis of the first pipe.

[0014] Furthermore, a clamping plate is provided at the push rod end of the hydraulic support rod or the bottom end of the guide column. The clamping plate is arranged in an arc shape and abuts against the outer peripheral side wall of the second pipe when the push rod or the guide column performs an extrusion action.

[0015] Compared with the prior art, the present invention has the following advantages and positive effects: When the steel structure pipe truss is butt-welded, the fixing plates in the four clamps are firstly surrounded on the outside of the first pipe and connected, and then the second pipe is placed between the four positioning plates, and the second pipe is brought into contact with the port of the first pipe for welding, and finally, the outer wall of the second pipe is squeezed and positioned by four extrusion members, so that the position of the second pipe does not change; at this time, the axes of the first pipe and the second pipe coincide, and the butt-welding adjustment operation of the first pipe and the second pipe in the steel structure pipe truss is completed, and the construction personnel only need to weld the port positions of the first pipe and the second pipe; the butt-welding and straightening operation of the entire steel structure pipe truss is convenient and fast, and the operation process does not require welding, cutting, grinding and other operations, the processing process is less, the welding progress is faster, and the welding rate of the steel structure pipe truss is effectively improved; On the other hand, the straightening operation in the present invention will not leave welding spots on the first pipe and the second pipe, and there will be no quality risks, ensuring that its appearance is not affected in any way; at the same time, the butt welding straightening device can be disassembled and reused after the welding of the first pipe and the second pipe is completed, effectively saving the welding cost of the steel structure pipe truss; and, the design of the inclined avoidance surface at the bottom end of the positioning plate in the present invention allows the inclined avoidance surface to avoid the variable diameter position of the second pipe, so that the entire device can realize the butt welding and straightening operation of pipe trusses with the same diameter, and can also realize the butt welding and straightening operation of pipe trusses with variable diameter structures. It has a wide applicability, which further improves the use effect of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 1 It is the installation effect diagram of the present invention; Figure 2 It is a main structural diagram of the present invention in Example 1; Figure 3 It is a right view structural diagram of the present invention in embodiment 1; Figure 4 This is a front structural diagram of a single clamp in Example 1; Figure 5 It is a main structural diagram of the present invention in Example 2; Figure 6 It is a front view of the connection structure of a single clamp in Example 2; Figure 7It is a main structural diagram of the present invention in Example 3; Figure 8 This is a front view of the connection structure of a single clamp in Example 3. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work, any modifications, equivalent substitutions, improvements, etc., should be included in the protection scope of the present invention.

[0019] Embodiment 1, as Figures 1 to 4 As shown, this embodiment discloses a reusable steel structure pipe truss butt welding straightening device, comprising four clamps 1 evenly arranged along the outer circumference of a first pipe 2; The clamp 1 includes a fixing plate 11 and a positioning plate 12. The fixing plate 11 is in the shape of an arc plate. Both ends of the fixing plate 11 in the arc direction are welded with bent plates 111, and bolt holes are provided on the bent plates 111. The bent plates 111 on adjacent fixing plates 11 are connected by M20 fastening bolts 14 passing through the bolt holes. The fixing plates 11 in the four clamps 1 are connected end to end to enclose a cylindrical cavity structure for accommodating the first pipe 2. A positioning plate 12 is provided in the middle of the outer wall of the fixing plate 11, the plane to which the positioning plate 12 belongs is consistent with the radial direction of the first pipe 2, the bottom of one end of the positioning plate 12 is fixedly connected to the outer wall of the fixing plate 11, and the other end of the positioning plate 12 extends outward from the fixing plate 11 and is connected to the extrusion member 4; An inclined avoidance surface 121 is provided at the bottom end of the positioning plate 12. When the outer diameter of the second pipe 3 increases, the reducing end of the second pipe 3 can be welded to the end of the first pipe 2, and the inclined avoidance surface 121 can avoid the position of the reducing end of the second pipe 3; the inclined avoidance surface 121 is arranged on the outside of the fixing plate 11 and is located at the outer periphery of the second pipe 3. The inclined avoidance surface 121 gradually rises from one end close to the fixing plate 11 to one end close to the extrusion member 4. The inclination angle of the inclined avoidance surface 121 is 30°, which can meet the inclined diameter reduction requirements of various pipes.

[0020] The bottom end of the positioning plate 12 is provided with an avoidance groove 122, which is arranged at the bottom of one end of the inclined avoidance surface 121 close to the fixed plate 11. The avoidance groove 122 is a semicircular structure with a diameter of 50 mm; the avoidance groove 122 is located at the periphery of the welding position of the end of the first pipe 2 and the end of the second pipe 3. During welding, the avoidance groove 122 can avoid the weld between the two pipes to prevent the weld generated during welding from affecting the positioning operation of the positioning plate 12; The extrusion pieces 4 on the four positioning plates 12 are arranged correspondingly and the extrusion direction of the four extrusion pieces 4 is consistent with the radial direction of the first pipe 2; the extrusion piece 4 is a hydraulic support rod 13, the length direction of the hydraulic support rod 13 is consistent with the radial direction of the first pipe 2, the outer wall of the hydraulic support rod 13 is welded to the end of the positioning plate 12, and the push rod of the hydraulic support rod 13 performs an extrusion action toward the axis of the first pipe 2 and the second pipe 3; the push rod end of the hydraulic support rod 13 is fixedly connected with a clamping plate 15, and the clamping plate 15 is arranged in an arc shape. When the push rod performs an extrusion action, the arc inner wall of the clamping plate 15 abuts against the outer peripheral side wall of the second pipe 3.

[0021] In this embodiment, the connection operation with the first pipeline is realized by the fixing plate in the clamp, and then the second pipeline is placed between the four positioning plates and tightened by the outer peripheral side walls of the four hydraulic support rods to realize the docking and straightening operation between the first pipeline and the second pipeline. Embodiment 2, as Figure 1 , Figure 5 , Figure 6 As shown, this embodiment discloses a reusable steel structure pipe truss butt welding straightening device, comprising four clamps 1 evenly arranged along the outer circumference of a first pipe 2; The clamp 1 includes a fixing plate 11 and a positioning plate 12. The fixing plate 11 is in the shape of an arc plate. Both ends of the fixing plate 11 in the arc direction are bent outward to form a bent plate 111. Bolt holes are provided on the bent plate 111. The bent plates 111 on adjacent fixing plates 11 are connected by M20 fastening bolts 14 passing through the bolt holes. The fixing plates 11 in the four clamps 1 are connected end to end to enclose a cylindrical cavity structure for accommodating the first pipe 2. A positioning plate 12 is provided in the middle of the outer wall of the fixing plate 11, the plane to which the positioning plate 12 belongs is consistent with the radial direction of the first pipe 2, the bottom of one end of the positioning plate 12 is fixedly connected to the outer wall of the fixing plate 11, and the other end of the positioning plate 12 extends outward from the fixing plate 11 and is connected to the extrusion member 4; An inclined avoidance surface 121 is provided at the bottom end of the positioning plate 12. When the outer diameter of the second pipe 3 increases, the reducing end of the second pipe 3 can be welded to the end of the first pipe 2, and the inclined avoidance surface 121 can avoid the position of the reducing end of the second pipe 3; the inclined avoidance surface 121 is arranged on the outside of the fixing plate 11 and is located at the outer periphery of the second pipe 3. The inclined avoidance surface 121 gradually rises from one end close to the fixing plate 11 to one end close to the extrusion member 4. The inclination angle of the inclined avoidance surface 121 is 30°, which can meet the inclined diameter reduction requirements of various pipes.

[0022] The bottom end of the positioning plate 12 is provided with an avoidance groove 122, which is arranged at the bottom of one end of the inclined avoidance surface 121 close to the fixed plate 11. The avoidance groove 122 is a semicircular structure with a diameter of 50 mm; the avoidance groove 122 is located at the periphery of the welding position of the end of the first pipe 2 and the end of the second pipe 3. During welding, the avoidance groove 122 can avoid the weld between the two pipes to prevent the weld generated during welding from affecting the positioning operation of the positioning plate 12; A reinforcing plate 16 is integrally formed at the top of the positioning plate 12. The reinforcing plate 16 is arranged in a triangular shape. The length direction of the reinforcing plate 16 is consistent with the length direction of the positioning plate 12. The bottom end of the reinforcing plate 16 is connected to the top of the positioning plate 12. The top of the reinforcing plate 16 is arranged in an inclined shape in the length direction and gradually rises from the end of the top of the reinforcing plate 16 close to the fixed plate 11 to the end of the top of the reinforcing plate 16 close to the extrusion member 4. The top of the reinforcing plate 16 is arranged in an arc shape in the thickness direction, and an external thread 161 is arranged on the arc outer wall of the top of the reinforcing plate 16; the four reinforcing plates 11 are jointly sleeved with a screw sleeve 17 on the outside, the screw sleeve 17 is in a conical sleeve shape, and the inner wall of the screw sleeve 17 is provided with an internal thread 171. After the screw sleeve 17 is sleeved on the outside of the four reinforcing plates 16, it is connected to the external thread 161 on the arc outer wall of the reinforcing plate 16 through the internal thread 171.

[0023] The extrusion pieces 4 on the four positioning plates 12 are arranged correspondingly and the extrusion direction of the four extrusion pieces 4 is consistent with the radial direction of the first pipe 2; the extrusion piece 4 is a hydraulic support rod 13, the length direction of the hydraulic support rod 13 is consistent with the radial direction of the first pipe 2, the outer wall of the hydraulic support rod 13 is welded to the end of the positioning plate 12, and the push rod of the hydraulic support rod 13 performs an extrusion action toward the axis of the first pipe 2 and the second pipe 3; a clamping plate 15 is welded to the push rod end of the hydraulic support rod 13, and the clamping plate 15 is arranged in an arc shape. When the push rod performs an extrusion action, the arc inner wall of the clamping plate 15 abuts against the outer peripheral side wall of the second pipe 3.

[0024] In this embodiment, a reinforcement plate is integrally formed on the positioning plate and a screw sleeve is sleeved on the outside of the four reinforcement plates, so that after the second pipe is tightened by the four hydraulic support rods, the screw sleeve can be rotated to move in the direction of the extrusion member, and under the tilting effect of the top of the reinforcement plate and the cooperation of the conical sleeve of the screw sleeve, the screw sleeve will generate a radial extrusion force on the reinforcement plate as the screw sleeve rotates and moves, and the radial extrusion force is transmitted to the hydraulic support rod through the reinforcement plate and the positioning plate, so that the hydraulic support rod and the outer wall of the second pipe have a more stable abutment and positioning effect, thereby further improving the docking and positioning effect of the second pipe.

[0025] Embodiment 3, as Figure 1 , Figure 7 , Figure 8 As shown, this embodiment discloses a reusable steel structure pipe truss butt welding straightening device, comprising four clamps 1 evenly arranged along the outer circumference of a first pipe 2; The clamp 1 includes a fixing plate 11 and a positioning plate 12. The fixing plate 11 is in the shape of an arc plate. Both ends of the fixing plate 11 in the arc direction are fixedly connected with bent plates 111, and bolt holes are provided on the bent plates 111. The bent plates 111 on adjacent fixing plates 11 are connected by M20 fastening bolts 14 passing through the bolt holes. The fixing plates 11 in the four clamps 1 are connected end to end to enclose a cylindrical cavity structure for accommodating the first pipe 2. A positioning plate 12 is provided in the middle of the outer wall of the fixing plate 11, the plane to which the positioning plate 12 belongs is consistent with the radial direction of the first pipe 2, the bottom of one end of the positioning plate 12 is fixedly connected to the outer wall of the fixing plate 11, and the other end of the positioning plate 12 extends outward from the fixing plate 11 and is connected to the extrusion member 4; An inclined avoidance surface 121 is provided at the bottom end of the positioning plate 12. When the outer diameter of the second pipe 3 increases, the reducing end of the second pipe 3 can be welded to the end of the first pipe 2, and the inclined avoidance surface 121 can avoid the position of the reducing end of the second pipe 3; the inclined avoidance surface 121 is arranged on the outside of the fixing plate 11 and is located at the outer periphery of the second pipe 3. The inclined avoidance surface 121 gradually rises from one end close to the fixing plate 11 to one end close to the extrusion member 4. The inclination angle of the inclined avoidance surface 121 is 30°, which can meet the inclined diameter reduction requirements of various pipes.

[0026] The bottom end of the positioning plate 12 is provided with an avoidance groove 122, which is arranged at the bottom of one end of the inclined avoidance surface 121 close to the fixed plate 11. The avoidance groove 122 is a semicircular structure with a diameter of 50 mm; the avoidance groove 122 is located at the periphery of the welding position of the end of the first pipe 2 and the end of the second pipe 3. During welding, the avoidance groove 122 can avoid the weld between the two pipes to prevent the weld generated during welding from affecting the positioning operation of the positioning plate 12; The top of the positioning plate 12 is provided with a reinforcing plate 16, which is triangular in shape. The length direction of the reinforcing plate 16 is consistent with the length direction of the positioning plate 12. The bottom of one end of the reinforcing plate 16 close to the fixed plate 11 is rotatably connected to the top of the positioning plate 12 through a positioning pin 18. The top of the reinforcing plate 16 is inclined in the length direction and gradually rises from the end of the top of the reinforcing plate 16 close to the fixed plate 11 to the end of the top of the reinforcing plate 16 close to the extrusion member 4. The top of the reinforcing plate 16 is arc-shaped in the thickness direction and the outer arc of the top of the reinforcing plate 16 is An external thread 161 is provided on the wall; a screwing sleeve 17 is commonly provided on the outer side of the four reinforcement plates 16, and the screwing sleeve 17 is in the shape of a conical sleeve, and an internal thread 171 is provided on the inner wall of the screwing sleeve 17. After the screwing sleeve 17 is sleeved on the outer side of the four reinforcement plates 16, it is connected to the external thread 161 on the arc outer wall of the reinforcement plate 16 through the internal thread 171; the bottom of one end of the reinforcement plate 16 close to the extrusion piece 4 generates a rotational movement toward the top end of the positioning plate 12 under the screwing and extruding action of the screwing sleeve 17, so as to generate an extrusion force on the extrusion piece 4 to abut against the outer wall of the second pipe 3.

[0027] The extrusion member 4 includes a guide sleeve 19 and a guide column 110. The axial direction of the guide sleeve 19 is consistent with the radial direction of the first pipe 2. The side wall of the guide sleeve 19 is welded to one end of the positioning plate 12. The guide column 110 is sleeved in the guide sleeve 19 and can slide along the axial direction of the guide sleeve 19. The top end of the guide column 110 contacts the bottom end of the reinforcing plate 16 after passing through the guide sleeve 19. The bottom end of the guide column 110 is fixedly connected with the clamping plate 15 after passing through the guide sleeve 19. The clamping plate 15 is arranged in an arc shape. When the bottom end of the guide column 110 performs an extrusion action toward the axis of the first pipe 2 and the second pipe 3, the arc inner wall of the clamping plate 15 abuts against the outer peripheral side wall of the second pipe 3.

[0028] In this embodiment, the previous hydraulic support rod structure is replaced by a guide column and a guide sleeve structure. At the same time, a split structure is set between the reinforcement plate and the positioning plate. When the screwing sleeve is tightened, the screwing sleeve generates a radial extrusion force on the reinforcement plate. The radial extrusion force causes the reinforcement plate to rotate around the positioning pin shaft and directly transmits the radial extrusion force to the guide column. As the screwing sleeve is continuously tightened, the radial extrusion force causes the guide columns on the four positioning plates to slide along the axial direction of the guide sleeve, and finally causes the clamping plate arranged at the bottom end of the guide column to press against the outer wall of the second pipe, thereby achieving the docking and positioning effect of the second pipe.

[0029] During the design, a spring member can be arranged between the guide column and the guide sleeve so that the top end of the guide column can maintain contact with the bottom end of the reinforcement plate. After the welding is completed, when the screw sleeve is loosened, it is convenient for the guide column to be reset after the extrusion action. After the guide column is reset, it can provide avoidance space for the installation of the second pipeline, will not cause obstruction to the installation space of the second pipeline, and improves the convenience of assembling the second pipeline.

[0030] When the steel structure pipe truss is butt-welded, the fixing plates in the four clamps are firstly surrounded on the outside of the first pipe and connected, and then the second pipe is placed between the four positioning plates, and the second pipe is brought into contact with the port of the first pipe for welding, and finally, the outer wall of the second pipe is squeezed and positioned by four extrusion members, so that the position of the second pipe does not change; at this time, the axes of the first pipe and the second pipe coincide, and the butt-welding adjustment operation of the first pipe and the second pipe in the steel structure pipe truss is completed, and the construction personnel only need to weld the port positions of the first pipe and the second pipe; the butt-welding and straightening operation of the entire steel structure pipe truss is convenient and fast, and the operation process does not require welding, cutting, grinding and other operations, the processing process is less, the welding progress is faster, and the welding rate of the steel structure pipe truss is effectively improved; On the other hand, the straightening operation in the present invention will not leave welding spots on the first pipe and the second pipe, and there will be no quality risks, ensuring that its appearance is not affected in any way; at the same time, the butt welding straightening device can be disassembled and reused after the welding of the first pipe and the second pipe is completed, effectively saving the welding cost of the steel structure pipe truss; and, the design of the inclined avoidance surface at the bottom end of the positioning plate in the present invention allows the inclined avoidance surface to avoid the variable diameter position of the second pipe, so that the entire device can realize the butt welding and straightening operation of pipe trusses with the same diameter, and can also realize the butt welding and straightening operation of pipe trusses with variable diameter structures. It has a wide applicability, which further improves the use effect of the present invention.

Claims

1. A reusable steel structure pipe truss butt welding straightening device, characterized by: The steel structure pipe truss butt welding straightening device includes four clamps evenly arranged along the outer circumference of the first pipeline; the clamps include a fixing plate and a positioning plate, the fixing plate is arranged in an arc shape, the two ends of the fixing plate are detachably connected to the fixing plate ends in adjacent clamps, and the fixing plates in the four clamps are connected end to end to form a cylindrical cavity structure for accommodating the first pipeline; a positioning plate is fixedly connected to the middle part of the outer side wall of the fixing plate, and one end of the positioning plate is connected to the extrusion piece after extending to the outside of the fixing plate; the extrusion pieces on the four positioning plates are arranged correspondingly and the extrusion direction of the four extrusion pieces is consistent with the radial direction of the first pipeline.

2. The reusable steel structure pipe truss butt welding straightening device according to claim 1, characterized in that: Both ends of the fixed plate in the arc direction are fixedly connected with bent plates, and bolt holes are arranged on the bent plates; the bent plates on adjacent fixed plates are connected by fastening bolts passing through the bolt holes to realize the end-to-end connection operation between the four fixed plates.

3. The reusable steel structure pipe truss butt welding straightening device according to claim 1, characterized in that: The plane to which the positioning plate belongs is consistent with the radial direction of the first pipe, the bottom of one end of the positioning plate is fixedly connected to the outer side wall of the fixed plate, and the other end of the positioning plate extends out of the outside of the fixed plate and is connected to the extrusion piece; an inclined avoidance surface is provided at the bottom end of the positioning plate, the inclined avoidance surface is provided on the outside of the fixed plate and the inclined avoidance surface gradually rises from one end close to the fixed plate to one end close to the extrusion piece.

4. The reusable steel structure pipe truss butt welding straightening device according to claim 3, characterized in that: The bottom end of the positioning plate is provided with an avoidance groove, which is arranged at the bottom of one end of the inclined avoidance surface close to the fixing plate.

5. The reusable steel structure pipe truss butt welding straightening device according to claim 1, characterized in that: The extrusion piece is a hydraulic support rod, the length direction of the hydraulic support rod is consistent with the radial direction of the first pipe, the outer wall of the hydraulic support rod is fixedly connected to the end of the positioning plate, and the push rod of the hydraulic support rod performs an extrusion action toward the axis of the first pipe.

6. The reusable steel structure pipe truss butt welding straightening device according to claim 1, characterized in that: A reinforcement plate is arranged at the top of the positioning plate. The reinforcement plate is arranged in a triangular shape. The length direction of the reinforcement plate is consistent with the length direction of the positioning plate. The bottom end of the reinforcement plate is connected to the positioning plate. The top end of the reinforcement plate is arranged in an inclined shape in the length direction and gradually rises from the end of the top of the reinforcement plate close to the fixed plate to the end of the top of the reinforcement plate close to the extrusion piece. The top end of the reinforcement plate is arranged in an arc shape in the thickness direction and an external thread is arranged on the arc outer wall of the top end of the reinforcement plate; the outer sides of the four reinforcement plates are jointly sleeved with a screw sleeve, the screw sleeve is in a conical sleeve shape, the inner wall of the screw sleeve is provided with an internal thread and is sleeved on the outer sides of the four reinforcement plates and connected to the external thread on the arc outer wall of the reinforcement plate through the internal thread.

7. The reusable steel structure pipe truss butt welding straightening device according to claim 6, characterized in that: The top end of the positioning plate and the bottom end of the reinforcement plate are integrally formed or fixedly connected.

8. The reusable steel structure pipe truss butt welding straightening device according to claim 6, characterized in that: The bottom of one end of the reinforcing plate close to the fixing plate is connected to the pin shaft at the top of the positioning plate. The bottom of the reinforcing plate rotates and moves toward the top of the positioning plate under the screwing and squeezing action of the screwing sleeve.

9. The reusable steel structure pipe truss butt welding straightening device according to claim 8, characterized in that: The extrusion member includes a guide sleeve and a guide column. The axial direction of the guide sleeve is consistent with the radial direction of the first pipe. The side wall of the guide sleeve is fixedly connected to one end of the positioning plate. The guide column is arranged in the guide sleeve and can slide along the axial direction of the guide sleeve. After the top end of the guide column passes through the guide sleeve, it contacts the bottom end of the reinforcement plate. After the bottom end of the guide column passes through the guide sleeve, it performs an extrusion action toward the axis of the first pipe.

10. The reusable steel structure pipe truss butt welding straightening device according to any one of claims 5 or 9, characterized in that: The push rod end of the hydraulic support rod or the bottom end of the guide column is provided with a clamping plate, which is arranged in an arc shape and abuts against the outer peripheral side wall of the second pipe when the push rod or the guide column performs an extrusion action.

Images