Shape correction elbow resetting device and method

Abstract

The invention provides a correcting bent pipe resetting device and method. Lateral hand wheel chain wheel chain mechanisms are installed on the supporting steel beam assemblies, the two movable cross beam assemblies are hoisted to be lapped above the supporting steel beam frames, a large lead screw is screwed into one of the supporting steel beam frames, and one movable cross beam assembly is driven by the lateral hand wheel chain wheel chain mechanisms to move; a beam box is welded to the lower portion of the movable cross beam, a lead screw nut mechanism is installed in the hollow position of the beam box, a cylindrical guide sleeve is installed in a small lead screw nut, a steel wire rope penetrates through a hole of the cylindrical guide sleeve, an end annular knot is punched, a chain block is hung at the end of the steel wire rope, and the bent pipe is hoisted; the position of one movable cross beam assembly is limited by a large lead screw, the other movable cross beam assembly freely slides, the bent pipe is moved and finely adjusted in the transverse direction and the front-back direction, then the bent pipe gradually gets close to a lower die pipe support, and therefore the bent pipe is lifted away from a front pipe body, the side marking line relative to the die coincides with the die marking line, and the purpose of precise reset is achieved.

Description

Technical Field

[0001] The invention relates to pipe bending in the field of pipes, and in particular to a device and method for resetting a correcting bent pipe. Background Art

[0002] The integrally forged stainless steel straight tube is bent on the die using the force of the pressure head. A dial is installed on the die. The forming angle of the stainless steel straight tube can be roughly calculated using the rotation angle of the die, and then the curvature of the bent tube can be roughly measured using a template for measuring the curvature radius.

[0003] Due to the obstruction of the mold and other tooling, the laser tracker cannot accurately and comprehensively collect the data of the pipe bend. After the rough measurement data is basically consistent, the mold needs to be lifted off, and the laser tracker is used on the ground to accurately measure all the dimensions of the pipe bend according to the drawings, combined with tolerances and margins. Due to the constraints of various shape and position dimensions, the dimensions are often unqualified. In addition, since the stainless steel straight pipe is relatively soft, for pipe bends with large bending angles, uneven force during the bending process, or pipe bends that require large force and rapid pressure release during the process, the internal force will be slowly released after being left on the ground for a period of time, and the angle change will also exceed the tolerance.

[0004] The above phenomena all require rework and repeated installation on the mold for re-pressing. During repeated installation, it is difficult to place the elbow with branch pipes in place, especially, resulting in deviations in the bending center and pressure-bearing position of the elbow. New pits and indentations that affect product quality will be generated at the bending part and the mold joint, making the curved line of the bending section very irregular, affecting the measurement and verification of the curvature radius. In the subsequent welding process of bending and forming, some pipes will not be able to be accurately positioned when arranging welding branches in the bending section, resulting in the failure of product acceptance. Therefore, before re-pressing the elbow, it is particularly important to accurately adjust the position of the elbow in the mold to achieve the original reset. Summary of the invention

[0005] In order to solve the shortcomings of the prior art, the present invention provides a device and method for resetting a shaped bend pipe to solve the problem of original resetting when the shaped bend pipe is re-pressed. The method solves the technical problem of re-pressing the shaped bend pipe by applying a device for resetting a shaped bend pipe.

[0006] The solution adopted by the present invention to solve the technical problem is: A device for resetting a correcting bent pipe includes a supporting steel beam assembly, a movable crossbeam assembly, a hoisting left and right adjustment mechanism, and a hoisting drive mechanism; The supporting steel beam assembly includes a supporting steel beam frame, a lateral hanging plate, a lateral handwheel sprocket chain mechanism mounting seat, a lateral chain tensioning mechanism mounting seat and a guide rail; a lateral hanging plate is arranged on the side of one end of the supporting steel beam frame, a lateral handwheel sprocket chain mechanism mounting seat is arranged at the lower part of the lateral hanging plate, and a lateral chain tensioning mechanism mounting seat is arranged in the middle part of the lateral hanging plate; a guide rail is arranged on the top of the supporting steel beam frame for supporting the moving crossbeam assembly to move along the guide rail; The movable crossbeam assembly comprises a movable crossbeam, a polytetrafluoroethylene plate, a blocking steel plate, a beam box, a forward hanging plate, a forward handwheel sprocket chain mechanism mounting seat and a forward chain tensioning mechanism mounting seat; the movable crossbeam assembly is divided into two groups, and is located on the guide rails supporting the steel beam assembly; grooves are formed at the positions where the two ends of the movable crossbeam cooperate with the guide rails, and the grooves are welded and blocked with blocking steel plates, and polytetrafluoroethylene plates are provided on the blocking steel plates; a beam box is provided at the lower part of the movable crossbeam, a forward hanging plate is provided at one end of the beam box, a forward handwheel sprocket chain mechanism mounting seat is provided at the lower part of the forward hanging plate, and a forward chain tensioning mechanism mounting seat is provided in the middle part of the forward hanging plate; The left and right hoisting adjustment mechanism includes a forward hand wheel sprocket chain mechanism, a screw nut mechanism, a forward chain tensioning mechanism, a wire rope and a hand chain hoist; The forward handwheel sprocket chain mechanism is assembled on the forward hanging plate, and includes a forward handwheel, a forward handwheel shaft, a forward small sprocket and a forward chain; the forward handwheel shaft is assembled on the forward handwheel sprocket chain mechanism mounting seat, and the forward handwheel sprocket chain mechanism mounting seat includes a forward bearing seat, in which a forward bearing is assembled and fixed by a forward shaft end gland; a forward small sprocket is mounted on the forward handwheel shaft, and the forward small sprocket is meshed with the forward chain, and a forward handwheel is arranged at the outer end of the forward handwheel shaft to drive the forward small sprocket to rotate; The forward chain tensioning mechanism comprises a forward tensioning sprocket, a forward tensioning sprocket shaft, a forward screw top block and a forward adjusting screw; the forward tensioning sprocket shaft is mounted on the forward chain tensioning mechanism mounting seat, and a forward tensioning sprocket is mounted on the forward tensioning sprocket shaft to tension the forward chain; a forward screw top block and a forward adjusting screw are mounted on the forward chain tensioning mechanism mounting seat, and rotating the forward adjusting screw can drive the forward screw top block to move and press the forward tensioning sprocket shaft to make the forward tensioning sprocket translate; The screw nut mechanism is assembled in the reserved position in the hollow of the upper beam box of the moving crossbeam, including a small screw, a small screw nut, a cylindrical guide sleeve, a pin, a screw bearing seat, a screw bearing and a positive large sprocket; the two screw bearing seats are inverted at the bottom of the moving crossbeam, and the screw bearings are assembled at both ends of the small screw and assembled in the screw bearing seat; a small screw nut is assembled on the small screw, and a positive large sprocket is assembled at the outer end of the small screw, and the positive small sprocket drives the positive large sprocket through the positive chain; the internal transition of the small screw nut is matched with a pin with a middle hole, and a copper cylindrical guide sleeve is added between the pin and the inner hole of the small screw nut, and an axial end retaining ring is added at the axial end of the pin to prevent the pin and the cylindrical guide sleeve from moving; The wire rope passes through the middle hole of the pin, and then is bent at the end of the wire rope and locked with a pressure plate screw to make the end of the wire rope into a ring for hanging the hand chain hoist; The hoisting drive mechanism includes a lateral handwheel sprocket chain mechanism, a lateral chain tensioning mechanism, a lateral large sprocket, an optical axis, an optical axis bearing seat, an optical axis bearing, a rigid coupling, a large screw and a cylindrical threaded sleeve; the lateral handwheel sprocket chain mechanism is assembled on the lateral hanging plate supporting the steel beam frame, and includes a lateral handwheel 411, a lateral handwheel shaft, a lateral small sprocket and a lateral chain; the lateral handwheel shaft is mounted on a lateral handwheel sprocket chain mechanism mounting seat, and the lateral handwheel sprocket chain mechanism mounting seat includes a lateral bearing seat, in which a lateral bearing is assembled and fixed by a lateral shaft end pressure cover; a lateral small sprocket is mounted on the lateral handwheel shaft, and the lateral small sprocket is meshed with the lateral chain, and a lateral handwheel is provided at the outer end of the lateral handwheel shaft to drive the lateral small sprocket to rotate; The lateral chain tensioning mechanism comprises a lateral tensioning sprocket, a lateral tensioning sprocket shaft, a lateral screw top block and a lateral adjusting screw; the lateral tensioning sprocket shaft is assembled on the lateral chain tensioning mechanism mounting seat, and the lateral tensioning sprocket shaft is assembled with a lateral tensioning sprocket to tension the lateral chain; the lateral screw top block and the lateral adjusting screw are assembled on the lateral chain tensioning mechanism mounting seat, and rotating the lateral adjusting screw can drive the lateral screw top block to move and tighten the lateral tensioning sprocket shaft to make the lateral tensioning sprocket translate; optical axis bearings are assembled at both ends of the optical axis and are fixed to a portion of the top of the supporting steel beam frame through an optical axis bearing seat. end; the outer end of the optical axis is equipped with a lateral large sprocket, and the lateral small sprocket drives the lateral large sprocket through the lateral chain; the inner end of the optical axis is connected to a large screw rod through a rigid coupling, and the large screw rod is threaded with a cylindrical threaded sleeve, and the cylindrical threaded sleeve is embedded in the middle of the adjacent moving beam; when force is applied to the lateral handwheel, the lateral small sprocket is transmitted to the lateral large sprocket through the lateral chain, and then to the optical axis, driving the large screw rod to rotate through the rigid coupling, and driving the moving beam assembly to move along the guide rail on the top of the supporting steel beam frame through the cylindrical threaded sleeve in the middle of the moving beam, so as to realize the longitudinal movement and position adjustment of the bent pipe.

[0007] In order to further solve the technical problem to be solved by the present invention, a method for resetting a shaped curved pipe provided by the present invention uses a shaped curved pipe resetting device, comprising the following steps: Step 1: Use the crane in the workshop to place the bent pipe firmly on the mold; Step 2: Fix the supporting steel beam assembly; hoist the shape-correcting bending pipe resetting device to the hydraulic press working platform, so that the mold position is centered relative to the shape-correcting bending pipe resetting device; invert the T-head bolt through the foot plate and the square hole of the full-length foot plate and put it into the T-slot of the hydraulic press platform, pass the square hole pressure plate with a round hole in the middle through the inverted T-head bolt to cover the rectangular square hole, add a spring washer and a flat washer to the end of the T-head bolt and screw in the nut to lock the supporting steel beam assembly with the hydraulic press platform; Step 3: Adjust the forward handwheel sprocket chain mechanism and the lateral handwheel sprocket chain mechanism; by changing the tightening force of the forward adjusting screw on the forward handwheel sprocket chain mechanism mounting seat in the forward hanging plate on the forward screw top block, the forward tensioning sprocket shaft drives the forward tensioning sprocket to move, thereby adjusting the tightness of the forward chain; similarly, by changing the tightening force of the lateral adjusting screw on the lateral handwheel sprocket chain mechanism mounting seat on the lateral hanging plate on the lateral screw top block, the lateral tensioning sprocket shaft drives the lateral tensioning sprocket to move, thereby adjusting the tightness of the lateral chain; Step 4: Apply force clockwise or counterclockwise to the lateral handwheel of the lifting drive mechanism, and the force is transmitted to the lateral small sprocket through the lateral handwheel shaft, and then to the lateral large sprocket through the lateral chain. The force is then transmitted to the large lead screw through the optical shaft connected to the lateral large sprocket through the rigid coupling. The rotation of the large lead screw drives the cylindrical threaded sleeve welded in the middle of the moving beam to move, so that the moving beam assembly can move forward and backward along the guide rail above the supporting steel beam frame under the isolation of the polytetrafluoroethylene plate; in coordination with this, apply force clockwise or counterclockwise to the forward handwheel of the lifting left and right adjustment mechanism, and the force is transmitted to the forward small sprocket through the forward handwheel shaft, and then to the forward large sprocket through the forward chain. The small screw connected to the positive large sprocket drives the small screw nut to move, and then drives the cylindrical guide sleeve and the pin in the small screw nut to move along the horizontal long holes opened on both sides of the channel steel of the moving crossbeam under the lateral restriction of the shaft end retaining ring, and then drives the wire rope and the hand chain hoist below to move, so as to realize the function of adjusting the position of the elbow by lateral movement; the position of the hand chain hoist relative to the lifting ring at the end of the elbow is adjusted by front and rear and lateral movement, and the hand chain hoist is used to hang the lifting ring of the sealing plate at the end of the elbow, and the moving crossbeam assembly on the other side slides freely forward and backward on the guide rail through external force, and cooperates with the lateral movement adjustment to make the hand chain hoist below hang the lifting ring at the other end of the elbow, and the two hand chain hoists apply force at the same time to lift the elbow away from the mold and reach a stable state; Step 5: Use the hand chain hoist to adjust the height of the bent pipe; adjust the side handwheels and the forward handwheel to move the bent pipe in the lateral and front-to-back directions of the mold for fine adjustment, so that the bent pipe gradually approaches the pipe support of the mold, and then the side markings of the mold and the mold markings of the front pipe body relative to the bent pipe are aligned to achieve the purpose of precise resetting; if it is difficult to apply force to the lateral handwheel and the forward handwheel after the bent pipe is hoisted, an extension rod can be installed on the lateral handwheel and the forward handwheel to increase the force arm or change to an electric handwheel to achieve the purpose of fine-tuning.

[0008] Positive effects: The technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: 1. Since the embodiment of the present application adopts the technical means of arranging a forward handwheel sprocket chain mechanism and a lead screw nut mechanism on the forward hanging plate, when the forward handwheel applies force, the forward handwheel shaft drives the forward small sprocket to rotate synchronously, and the forward large sprocket is driven to rotate by the forward chain, which can drive the small lead screw to drive the small lead screw nut to move, and then the cylindrical guide sleeve moves along the horizontal long holes opened on both sides of the channel steel, thereby driving the wire rope and the hand winch below to move, effectively solving the technical problem of resetting the shaped bent pipe in the prior art, and then realizing the lateral movement and adjustment position of the bent pipe, while the hand winch pulls the bent pipe up and down to adjust the height of the bent pipe.

[0009] 2. Since the embodiment of the present application adopts the technical means of providing a forward chain tensioning mechanism on the forward hanging plate, rotating the forward adjusting screw can drive the forward screw top block to move and tighten the forward tensioning sprocket shaft, so that the forward tensioning sprocket translates, and the forward tensioning sprocket tensions the forward chain, which effectively solves the technical problem of resetting the shaped bent pipe in the prior art, and thereby achieves the technical effect of forward chain tensioning.

[0010] 3. Since the embodiment of the present application adopts a technical means in which a lateral handwheel sprocket chain mechanism is provided on the lateral hanging plate, and a large screw rod and a cylindrical threaded sleeve are screwed together on the top of the supporting steel beam frame, when the lateral handwheel applies force, the lateral small sprocket transmits the force to the lateral large sprocket through the lateral chain, and then transmits it to the optical axis, and drives the large screw rod to rotate through the rigid coupling, and the large screw rod is screwed with the cylindrical threaded sleeve in the middle of the movable beam, which can pull the movable beam to move along the guide rail, effectively solving the technical problem of resetting the shaped bent pipe in the prior art, and thus achieving the technical effect of longitudinal movement of the bent pipe and adjusting its position.

[0011] 4. Since the embodiment of the present application adopts the technical means of providing a lateral chain tensioning mechanism on the lateral hanging plate, the lateral adjusting screw drives the lateral screw top block to move, and presses the lateral tensioning sprocket shaft, so that the lateral tensioning sprocket translates, and the lateral tensioning sprocket tensions the lateral chain, which effectively solves the technical problem of resetting the shaped bent pipe in the prior art, and thus achieves the technical effect of tensioning the lateral chain.

[0012] The invention is suitable for application as a device and method for resetting a shaped bent pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The description of the present invention is given for the purpose of example and description, and is not exhaustive or limits the present invention to the disclosed form. Many modifications and changes are obvious to ordinary technicians in this field. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and enable ordinary technicians in this field to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

[0014] Figure 1 This is the front view of the present embodiment; Figure 2 It is a side view of this embodiment.

[0015] 100.Supporting steel beam assembly, 110.Supporting steel beam frame, 111. Rectangular frame, 112. Pillar, 120. Feet, 130. Full length foot board, 140. Square hole pressure plate, 150.T-head bolts, 160. Lateral hanging board, 170. Lateral handwheel sprocket chain mechanism mounting seat, 180. Lateral chain tensioner mounting seat, 190. Guide rail; 200. Moving beam assembly, 210.Moving beam, 211. Rectangular tube I, 212. Liner I, 220.PTFE sheet, 230. Sealing steel plate, 240. Beam box, 241. Channel steel, 242. Rectangular tube II, 243. Liner II, 244. Bottom sealing plate, 250. Forward hanging board, 260. Forward hand wheel sprocket chain mechanism mounting seat, 270. Forward chain tensioning mechanism mounting seat; 300. Lifting left and right adjustment mechanism, 310. Positive hand wheel sprocket chain mechanism, 311. Forward hand wheel, 312. Positive handwheel shaft, 313. Forward small sprocket, 314. Forward chain, 320. Screw nut mechanism, 321. Small screw, 322. Small screw nut, 323.Cylindrical guide sleeve, 324. Pillar pin, 325. Screw bearing seat, 326. Screw bearing, 327. Positive large sprocket, 330. Positive chain tensioning mechanism, 331. Positive tension sprocket, 332. Positive tension sprocket shaft, 333. Forward screw top block, 334. Positive adjustment screw, 340.Wire rope, 350. Hand chain hoist; 400. Hoisting drive mechanism, 410. Lateral handwheel sprocket chain mechanism, 411. Lateral hand wheel, 412. Lateral handwheel shaft, 413. Lateral small sprocket, 414. Lateral chain, 420. Lateral chain tensioning mechanism, 421. Lateral tensioning sprocket, 422. Lateral tensioning sprocket shaft, 423. Lateral screw top block, 424. Lateral adjustment screw, 430. Lateral large sprocket, 440. Optical axis, 450. Optical axis bearing seat, 460. Optical axis bearing, 470. Rigid coupling, 480. Large screw rod, 490.Cylindrical threaded sleeve. DETAILED DESCRIPTION

[0016] 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, rather than all of the embodiments. Although the embodiments of the present invention have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present invention.

[0017] As shown in the figure, a device for resetting a correcting bent pipe includes a supporting steel beam assembly 100, a movable cross beam assembly 200, a hoisting left and right adjustment mechanism 300 and a hoisting drive mechanism 400; The support steel beam assembly 100 includes a support steel beam frame 110, a lateral hanging plate 160, a lateral hand wheel sprocket chain mechanism mounting seat 170, a lateral chain tensioning mechanism mounting seat 180 and a guide rail 190; The supporting steel beam frame 110 is a frame structure, and a lateral hanging plate 160 is arranged on the side of one end of the supporting steel beam frame 110, and a lateral hand wheel sprocket chain mechanism mounting seat 170 is arranged at the lower part of the lateral hanging plate 160 for mounting the lateral hand wheel sprocket chain mechanism 410, and a lateral chain tensioning mechanism mounting seat 180 is arranged in the middle part of the lateral hanging plate 160 for mounting the lateral chain tensioning mechanism 420; a guide rail 190 is arranged on the top of the supporting steel beam frame 110 for supporting the moving cross beam assembly 200 to move along the guide rail 190; The moving crossbeam assembly 200 includes a moving crossbeam 210, a polytetrafluoroethylene plate 220, a blocking steel plate 230, a beam box 240, a forward hanging plate 250, a forward hand wheel sprocket chain mechanism mounting seat 260 and a forward chain tensioning mechanism mounting seat 270; The movable crossbeam assembly 200 is divided into two groups and is located on the guide rail 190 supporting the steel beam assembly 100; grooves are formed at the two ends of the movable crossbeam 210 at the positions matching the guide rail 190, and the grooves are welded and sealed with a blocking steel plate 230, and a polytetrafluoroethylene plate 220 is fixedly connected to the blocking steel plate 230 in contact with the guide rail 190 with screws, so that the movable crossbeam 210 can slide freely relative to the guide rail 190; a beam box 240 is provided at the lower part of the movable crossbeam 210, and a forward hanging plate 250 is provided at one end of the beam box 240, and a forward handwheel sprocket chain mechanism mounting seat 260 is provided at the lower part of the forward hanging plate 250 for installing the forward handwheel sprocket chain mechanism 310, and a forward chain tensioning mechanism mounting seat 270 is provided in the middle part of the forward hanging plate 250 for installing the forward chain tensioning mechanism 330; The hoisting left and right adjustment mechanism 300 includes a forward hand wheel sprocket chain mechanism 310, a screw nut mechanism 320, a forward chain tensioning mechanism 330, a wire rope 340 and a hand chain hoist 350; The forward hand wheel sprocket chain mechanism 310 is assembled on the forward hanging plate 250, and includes a forward hand wheel 311, a forward hand wheel shaft 312, a forward small sprocket 313 and a forward chain 314; The forward handwheel shaft 312 is assembled on the forward handwheel sprocket chain mechanism mounting seat 260, and the forward handwheel sprocket chain mechanism mounting seat 260 includes a forward bearing seat, in which a forward bearing is assembled and fixed by a forward shaft end gland; a forward small sprocket 313 is mounted on the forward handwheel shaft 312, and the forward small sprocket 313 is meshed with the forward chain 314, and a forward handwheel 311 is provided at the outer end of the forward handwheel shaft 312 to drive the forward small sprocket 313 to rotate; The forward chain tensioning mechanism 330 includes a forward tensioning sprocket 331, a forward tensioning sprocket shaft 332, a forward screw top block 333 and a forward adjusting screw 334; The forward tensioning sprocket shaft 332 is mounted on the forward chain tensioning mechanism mounting seat 270, and a forward tensioning sprocket 331 is mounted on the forward tensioning sprocket shaft 332 to tension the forward chain 314; a forward screw top block 333 and a forward adjustment screw 334 are mounted on the forward chain tensioning mechanism mounting seat 270, and the forward adjustment screw 334 is rotated to drive the forward screw top block 333 to move and tighten the forward tensioning sprocket shaft 332, so that the forward tensioning sprocket 331 moves horizontally, thereby achieving the purpose of tensioning the forward chain 314; The screw nut mechanism 320 is assembled in the hollow reserved position of the upper beam box 240 of the moving cross beam 210, and includes a small screw 321, a small screw nut 322, a cylindrical guide sleeve 323, a pin 324, a screw bearing seat 325, a screw bearing 326 and a positive large sprocket 327; Two screw bearing seats 325 are inverted at the bottom of the moving cross beam 210, and screw bearings 326 are installed at both ends of the small screw 321 and installed in the screw bearing seats 325; a small screw nut 322 is installed on the small screw 321, and a positive large sprocket 327 is installed at the outer end of the small screw 321. The positive small sprocket 313 drives the positive large sprocket 327 through the positive chain 314; the small screw nut 322 is a hollow structure, and the internal transition is matched with a column pin 324 with a middle hole. The column pin 324 also moves along the horizontal long strip holes opened on both sides of the channel steel 241 of the moving cross beam 210. Considering the matching with the column pin 324 The processing of the through-horizontal long hole is very difficult. If a deviation occurs, it will cause the small screw nut mechanism to be damaged after being stressed. To avoid this phenomenon, a copper cylindrical guide sleeve 323 is added between the column pin 324 and the inner hole of the small screw nut 322, and an axial end retaining ring is added to the axial end of the column pin 324 to prevent the column pin 324 and the cylindrical guide sleeve 323 from moving. If there is an installation deviation between the column pin 324 and the through-horizontal long hole, correction and compensation are performed when processing the cylindrical guide sleeve 323, and the cylindrical guide sleeve 323 can slide or roll slightly relative to the through-horizontal long hole under the condition of small friction. The wire rope 340 passes through the middle hole of the pin 324, and then is bent at the end of the wire rope 340 and locked with a pressure plate screw, so that the end of the wire rope 340 is ring-shaped for hanging the hand chain hoist 350; Among them, the rotation of the forward handwheel 311 can drive the forward handwheel shaft 312, and make the forward small sprocket 313 rotate synchronously, and drive the forward large sprocket 327 to rotate through the forward chain 314, thereby driving the small screw 321 installed at the lower part of the movable beam 210 to drive the small screw nut 322 to move, thereby driving the cylindrical guide sleeve 323 to move along the horizontal long holes opened on both sides of the channel steel 241, and then driving the wire rope 340 and the hand winch 350 below to move, so as to realize the lateral movement and adjustment position of the bent pipe; at the same time, the hand winch 350 can pull the bent pipe up and down to realize the height adjustment position of the bent pipe.

[0018] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages: Since the forward handwheel sprocket chain mechanism 310 and the lead screw nut mechanism 320 are provided on the forward hanging plate 250, when the forward handwheel 311 applies a force, the forward handwheel shaft 312 drives the forward small sprocket 313 to rotate synchronously, and drives the forward large sprocket 327 to rotate through the forward chain 314, which can drive the small lead screw 321 to drive the small lead screw nut 322 to move, and then the cylindrical guide sleeve 323 moves along the horizontal long holes opened on both sides of the channel steel 241, thereby driving the wire rope 340 and the hand winch 350 below to move, so as to realize the lateral movement and position adjustment of the bent pipe; the hand winch 350 can pull the bent pipe up and down to adjust the height of the bent pipe.

[0019] Since the forward chain tensioning mechanism 330 is provided on the forward hanging plate 250, rotating the forward adjusting screw 334 can drive the forward screw top block 333 to move, and press the forward tensioning sprocket shaft 332, so that the forward tensioning sprocket 331 translates, and the forward tensioning sprocket 331 tensions the forward chain 314, thereby achieving tensioning of the forward chain 314.

[0020] The hoisting drive mechanism 400 includes a lateral hand wheel sprocket chain mechanism 410, a lateral chain tensioning mechanism 420, a lateral large sprocket 430, an optical axis 440, an optical axis bearing seat 450, an optical axis bearing 460, a rigid coupling 470, a large screw rod 480 and a cylindrical threaded sleeve 490; The lateral handwheel sprocket chain mechanism 410 is mounted on the lateral hanging plate 160 supporting the steel beam frame 110, and includes a lateral handwheel 411, a lateral handwheel shaft 412, a lateral small sprocket 413 and a lateral chain 414; the lateral handwheel shaft 412 is mounted on the lateral handwheel sprocket chain mechanism mounting seat 170, and the lateral handwheel sprocket chain mechanism mounting seat 170 includes a lateral bearing seat, in which a lateral bearing is mounted and fixed by a lateral shaft end gland; a lateral small sprocket 413 is mounted on the lateral handwheel shaft 412, and the lateral small sprocket 413 is meshed with the lateral chain 414, and a lateral handwheel 411 is provided at the outer end of the lateral handwheel shaft 412 to drive the lateral small sprocket 413 to rotate; The lateral chain tensioning mechanism 420 includes a lateral tensioning sprocket 421, a lateral tensioning sprocket shaft 422, a lateral screw top block 423 and a lateral adjustment screw 424; the lateral tensioning sprocket shaft 422 is mounted on the lateral chain tensioning mechanism mounting seat 180, and the lateral tensioning sprocket 421 is mounted on the lateral tensioning sprocket shaft 422 to tension the lateral chain 414; the lateral screw top block 423 and the lateral adjustment screw 424 are mounted on the lateral chain tensioning mechanism mounting seat 180, and the rotation of the lateral adjustment screw 424 can drive the lateral screw top block 423 to move, and press the lateral tensioning sprocket shaft 422, so that the lateral tensioning sprocket 421 moves horizontally, thereby achieving the purpose of tensioning the lateral chain 414; The optical axis 440 is a stepped axis, with optical axis bearings 460 installed at both ends, and fixed to one end of the top of the supporting steel beam frame 110 through an optical axis bearing seat 450; the outer end of the optical axis 440 is equipped with a lateral large sprocket 430, and the lateral small sprocket 413 drives the lateral large sprocket 430 through a lateral chain 414; the inner end of the optical axis 440 is connected to a large screw rod 480 through a rigid coupling 470, and the large screw rod 480 is screwed with a cylindrical threaded sleeve 490, and the cylindrical threaded sleeve 490 is embedded in The middle part of the adjacent moving beam 210; when force is applied to the lateral hand wheel 411, the lateral small sprocket 413 is transmitted to the lateral large sprocket 430 through the lateral chain 414, and then to the optical axis 440, and the large screw rod 480 is driven to rotate through the rigid coupling 470, and the cylindrical threaded sleeve 490 in the middle part of the moving beam 210 drives the moving beam assembly 200 to move along the guide rail 190 at the top of the supporting steel beam frame 110, so as to realize the longitudinal movement adjustment position of the bent pipe.

[0021] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages: Since a lateral handwheel sprocket chain mechanism 410 is arranged on the lateral hanging plate 160, a large screw rod 480 and a cylindrical threaded sleeve 490 are screwed together at the top of the supporting steel beam frame 110; therefore, when the lateral handwheel 411 applies a force, the lateral small sprocket 413 transmits the force to the lateral large sprocket 430 through the lateral chain 414, and then transmits it to the optical axis 440, and drives the large screw rod 480 to rotate through the rigid coupling 470, and the large screw rod 480 is screwed together with the cylindrical threaded sleeve 490 in the middle of the moving beam 210, which can pull the moving beam 210 to move along the guide rail 190, thereby realizing the longitudinal movement of the bent pipe and adjusting its position.

[0022] Since a lateral chain tensioning mechanism 420 is provided on the lateral hanging plate 160 , the lateral adjusting screw 424 drives the lateral screw top block 423 to move and press the lateral tensioning sprocket shaft 422 , so that the lateral tensioning sprocket 421 translates, and the lateral tensioning sprocket 421 tensions the lateral chain 414 , thereby tensioning the lateral chain 414 .

[0023] In order to ensure the stability of the structure of this embodiment, the supporting steel beam frame 110 includes a rectangular frame 111 and columns 112. The rectangular frame 111 is formed by welding four square tubes together to form a frame. The columns 112 are arranged at the lower part of the rectangular frame 111 for support. The columns 112 are six square tubes. In order to increase the stability of the supporting steel beam frame 110, five rectangular steel plates are arranged at the bottom of the columns 112 as a seat plate. The seat plate includes a foot plate 120 and a full-length foot plate 130. Among them, the two columns 112 at one end of the supporting steel beam frame 110 are provided with a full-length foot plate 130 at the bottom, and the other four columns 112 are provided with foot plates 120 at the bottom. According to the position of the T-slot of the hydraulic press platform, a square hole has been opened at the corresponding position of the seat plate. When it is used, a square hole pressure plate 140 is added to the square hole and T-head bolts 150, gaskets, and nuts are installed to lock the supporting steel beam assembly 100 with the hydraulic press platform.

[0024] In order to further ensure the stability of the structure of this embodiment, the lateral hanging plate 160 is a part of the supporting steel beam assembly 100. The lateral hanging plate 160 is located on the full-length foot plate 130 at the bottom of the column 112. A steel plate is welded vertically to the surface of the steel plate. The upper part of the lateral hanging plate 160 is welded to the rectangular frame 111 of the supporting steel beam frame 110. To ensure the stability of the lateral hanging plate 160, two full-length angle steels are welded on the back of the lateral hanging plate 160. At the top of the supporting steel beam frame 110, two steel plates are welded and processed into guide rails for moving the cross beam assembly 200 along them.

[0025] In order to optimize the structure of this embodiment, the movable cross beam 210 includes a rectangular tube Ⅰ211 and a lining plate Ⅰ212. The two rectangular tubes Ⅰ211 are welded side by side, and the lining plates Ⅰ212 are welded on both sides to enhance the supporting strength and bending strength.

[0026] In order to further optimize the structure of this embodiment, the beam box 240 includes a channel steel 241, a rectangular tube II 242, a lining plate II 243 and a bottom sealing plate 244; two overlapping channel steels 241 and rectangular tube II 242 are welded at the bottom of the movable crossbeam 210, and a lining plate II 243 is welded on the back of the channel steel 241 to enhance the load-bearing capacity, and through-going long horizontal holes are opened on both sides of the end faces of the channel steel 241 and the lining plate II 243, and the hollow reserved position between the channel steel 241 and the rectangular tube II 242 is used to install the screw nut mechanism 320; a bottom sealing plate 244 is provided at the bottom of the rectangular tube II 242, and the bottom The sealing plate 244 is used to seal the screw nut mechanism 320 after it is installed, and can stabilize the stacked channel steel 241 and rectangular tube II 242 structure at the bottom. At the same time, the positive hanging plate 250 is fixed to the bottom sealing plate 244 with screws. Considering that the bottom sealing plate 244 needs to withstand the pulling force of the positive hanging plate 250, two angle steels are welded relatively to each other on the two inner sides of the inner wall of rectangular tube II 242 on the upper surface in the length direction of the bottom sealing plate 244, and are connected to the inner wall of the rectangular tube II 242 below the moving beam 210 in the horizontal direction with screws to increase the load-bearing capacity of the structure.

[0027] In order to further optimize the structure of this embodiment, the forward hanging plate 250 is formed by welding two full-length rectangular tubes on the back side of the long steel plate along the length direction, and a square plate with four circular mounting holes at the four corners is vertically welded to the ends of the long steel plate and the full-length rectangular tube. The forward handwheel sprocket chain mechanism mounting seat 260 and the forward chain tensioning mechanism mounting seat 270 are welded on the forward hanging plate 250.

[0028] As a conventional technical choice, a cylindrical threaded sleeve 490 is welded to the moving beam 210, a circular hole is opened in the middle of the moving beam 210, and the cylindrical threaded sleeve 490 is welded. The cylindrical threaded sleeve 490 and the large screw rod 480 of the lifting drive mechanism 400 are equipped with threaded holes for power transmission of the large screw rod 480.

[0029] Preferably, the polytetrafluoroethylene plate 220 is disposed between the guide rail 190 and the movable crossbeam 210 , mainly because the movable crossbeam 210 does not move frequently, and the structure can be simplified and the manufacturing cost can be reduced under the premise of ensuring the load-bearing requirements.

[0030] A method for resetting a shaped curved pipe, using a shaped curved pipe resetting device, comprises the following steps: Step 1: Use the crane in the workshop to place the bent pipe firmly on the mold; Step 2: Fix the support steel beam assembly 100; hoist the shape-correcting bending pipe reset device to the hydraulic press working platform, so that the mold position is centered relative to the shape-correcting bending pipe reset device; invert the T-head bolt 150 through the square holes of the foot plate 120 and the full-length foot plate 130 and put it into the T-slot of the hydraulic press platform, pass the square hole pressure plate 140 with a circular hole in the middle through the inverted T-head bolt 150 to cover the rectangular square hole, add a spring washer and a flat washer to the end of the T-head bolt 150 and screw in the nut to lock the support steel beam assembly 100 and the hydraulic press platform; Step 3: Adjust the forward handwheel sprocket chain mechanism 310 and the lateral handwheel sprocket chain mechanism 410; by changing the tightening force of the forward adjusting screw 334 on the forward handwheel sprocket chain mechanism mounting seat 260 in the forward hanging plate 250 on the forward screw top block 333, the forward tensioning sprocket shaft 332 drives the forward tensioning sprocket 331 to move, thereby adjusting the tightness of the forward chain 314; similarly, by changing the tightening force of the lateral adjusting screw 424 on the lateral handwheel sprocket chain mechanism mounting seat 170 on the lateral hanging plate 160 on the lateral screw top block 423, the lateral tensioning sprocket shaft 422 drives the lateral tensioning sprocket 421 to move, thereby adjusting the tightness of the lateral chain 414; Step 4: Apply force clockwise or counterclockwise to the lateral handwheel 411 of the lifting drive mechanism 400, the force is transmitted to the lateral small sprocket 413 through the lateral handwheel shaft 412, and then transmitted to the lateral large sprocket 430 through the lateral chain 414, and the force is then transmitted to the large screw rod 480 through the optical axis 440 connected to the lateral large sprocket 430 through the rigid coupling 470, and the large screw rod 480 rotates to drive the cylindrical threaded sleeve 490 welded to the middle part of the moving crossbeam 210 to move, so that the moving crossbeam assembly 200 can move forward and backward along the guide rail 190 above the supporting steel beam frame 110 under the isolation of the polytetrafluoroethylene plate 220; cooperate with it to apply force clockwise or counterclockwise to the forward handwheel 311 of the lifting left and right adjustment mechanism 300, the force is transmitted to the forward small sprocket 313 through the forward handwheel shaft 312, and then transmitted to the forward large The force of the sprocket 327 is then used to drive the small screw nut 322 to move through the small screw 321 connected to the positive large sprocket 327, thereby driving the cylindrical guide sleeve 323 and the pin 324 in the small screw nut 322 to move along the horizontal long holes opened on both sides of the channel steel 241 of the movable crossbeam 210 under the lateral restriction of the shaft end retaining ring, thereby driving the wire rope 340 and the hand chain hoist 350 below to move, thereby realizing the function of adjusting the position of the elbow lateral movement; the position of the hand chain hoist 350 relative to the lifting ring at the end of the elbow is adjusted by front and rear and lateral movement, and the hand chain hoist 350 is used to hang on the lifting ring of the sealing plate at the end of the elbow, and the movable crossbeam assembly 200 on the other side slides freely forward and backward on the guide rail 190 through external force, and cooperates with the lateral movement adjustment to make the hand chain hoist 350 below hang on the lifting ring at the other end of the elbow, and the two hand chain hoists 350 apply force at the same time to lift the elbow away from the mold and reach a stable state; Step 5: Use the hand chain hoist 350 to adjust the height of the bent pipe; cooperate with adjusting the side hand wheels 411 and the forward hand wheel 311 to move the bent pipe in the lateral and front-to-back directions of the mold for fine adjustment, so that the bent pipe gradually approaches the pipe support of the mold, and then the front pipe body of the bent pipe is lifted away from the mold so that the side marking line of the mold coincides with the mold marking line, thereby achieving the purpose of precise resetting; if it is difficult to apply force to the lateral hand wheel 411 and the forward hand wheel 311 after the bent pipe is lifted, an extension rod can be installed on the lateral hand wheel 411 and the forward hand wheel 311 to increase the force arm or change to an electric hand wheel to achieve the purpose of fine adjustment.

[0031] The working principle of this embodiment: A lateral handwheel sprocket chain mechanism 410 is installed on the supporting steel beam assembly 100, and the optical axis 440 at the power output end of the lateral large sprocket 430 is connected to the large screw rod 480 with a rigid coupling 470; two movable crossbeam assemblies 200 are hoisted above the supporting steel beam frame 110, and the large screw rod 480 is screwed into one of the supporting steel beam frames 110, and driven by the lateral handwheel sprocket chain mechanism 410, a movable crossbeam assembly 200 can be moved; a beam box 240 is welded under the movable crossbeam 210, a screw nut mechanism 320 is installed in the hollow position of the channel steel 241 of the beam box 240, a hollow cylindrical guide sleeve 323 is installed in the small screw nut 322 of the screw nut mechanism 320, and the wire rope 340 is extended from An end ring knot is tied through the hole of the cylindrical guide sleeve 323, and the hand winch 350 is hung on the end of the wire rope 340. The hook of the hand winch 350 is hung on the lifting ring of the sealing plate at the end of the bent pipe, and force is applied to the hand winch 350 to lift the bent pipe; a movable beam assembly 200 is limited in position by the large screw rod 480, and the other movable beam assembly 200 can slide freely, so that the lifted bent pipe reaches a stable state in the air, and the hand winch 350 is used to adjust the height of the bent pipe, and the side hand wheels 411 and the forward hand wheel 311 are adjusted to make the bent pipe move and fine-tune in the lateral and front-to-back directions, so that the bent pipe gradually approaches the lower mold pipe support, so that the side markings of the mold coincide with the mold markings before the bent pipe is lifted off, so as to achieve the purpose of precise resetting.

[0032] The features of this embodiment are as follows: It can make the curved line of the bent section regular after the mold is reset, hoisted and re-pressed, avoid the twisting of the re-pressed bent pipe, and avoid new pits and indentations on the product surface.

[0033] It is worth noting that the contents not described in detail in the specification belong to the prior art known to those skilled in the art, and the model parameters of the forward small sprocket 313, the forward large sprocket 327, the forward chain 314, the side small sprocket 413, the side large sprocket 430 and the side chain 414 are not specifically limited and can be determined using conventional equipment. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the prior art and will not be described here.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for resetting a shaped curved pipe, characterized in that ： A device for resetting a correcting bent pipe comprises a supporting steel beam assembly (100), a movable crossbeam assembly (200), a hoisting left and right adjustment mechanism (300) and a hoisting drive mechanism (400); The supporting steel beam assembly (100) comprises a supporting steel beam frame (110), a lateral hanging plate (160), a lateral hand wheel sprocket chain mechanism mounting seat (170), a lateral chain tensioning mechanism mounting seat (180) and a guide rail (190); A lateral hanging plate (160) is arranged on the side of one end of the supporting steel beam frame (110), a lateral hand wheel sprocket chain mechanism mounting seat (170) is arranged at the lower part of the lateral hanging plate (160), and a lateral chain tensioning mechanism mounting seat (180) is arranged in the middle part of the lateral hanging plate (160); a guide rail (190) is arranged on the top of the supporting steel beam frame (110) for supporting the movable crossbeam assembly (200) so that it moves along the guide rail (190); The movable crossbeam assembly (200) comprises a movable crossbeam (210), a polytetrafluoroethylene plate (220), a blocking steel plate (230), a beam box (240), a forward hanging plate (250), a forward hand wheel sprocket chain mechanism mounting seat (260) and a forward chain tensioning mechanism mounting seat (270); The movable crossbeam assembly (200) is divided into two groups and is located on the guide rail (190) of the supporting steel beam assembly (100); grooves are formed at the positions where the two ends of the movable crossbeam (210) cooperate with the guide rail (190), and the grooves are welded and sealed with a sealing steel plate (230), and a polytetrafluoroethylene plate (220) is provided on the sealing steel plate (230); a beam box (240) is provided at the lower part of the movable crossbeam (210), a forward hanging plate (250) is provided at one end of the beam box (240), a forward hand wheel sprocket chain mechanism mounting seat (260) is provided at the lower part of the forward hanging plate (250) for mounting the forward hand wheel sprocket chain mechanism (310), and a forward chain tensioning mechanism mounting seat (270) is provided in the middle part of the forward hanging plate (250); The hoisting left and right adjustment mechanism (300) comprises a forward hand wheel sprocket chain mechanism (310), a screw rod nut mechanism (320), a forward chain tensioning mechanism (330), a steel wire rope (340) and a hand chain hoist (350); The forward hand wheel sprocket chain mechanism (310) is assembled on the forward hanging plate (250), and comprises a forward hand wheel (311), a forward hand wheel shaft (312), a forward small sprocket (313) and a forward chain (314); The forward handwheel shaft (312) is assembled on the forward handwheel sprocket chain mechanism mounting seat (260), and the forward handwheel sprocket chain mechanism mounting seat (260) includes a forward bearing seat, in which a forward bearing is assembled and fixed by a forward shaft end gland; a forward small sprocket (313) is mounted on the forward handwheel shaft (312), and the forward small sprocket (313) is meshed with the forward chain (314); and a forward handwheel (311) is provided at the outer end of the forward handwheel shaft (312) to drive the forward small sprocket (313) to rotate; The forward chain tensioning mechanism (330) comprises a forward tensioning sprocket (331), a forward tensioning sprocket shaft (332), a forward screw top block (333) and a forward adjusting screw (334); The forward tensioning sprocket shaft (332) is mounted on the forward chain tensioning mechanism mounting seat (270), and a forward tensioning sprocket (331) is mounted on the forward tensioning sprocket shaft (332) to tension the forward chain (314); a forward screw top block (333) and a forward adjustment screw (334) are mounted on the forward chain tensioning mechanism mounting seat (270), and rotating the forward adjustment screw (334) can drive the forward screw top block (333) to move and tighten the forward tensioning sprocket shaft (332), so that the forward tensioning sprocket (331) moves in translation; The screw nut mechanism (320) is assembled in a hollow reserved position of the upper beam box (240) of the moving cross beam (210), and comprises a small screw (321), a small screw nut (322), a cylindrical guide sleeve (323), a column pin (324), a screw bearing seat (325), a screw bearing (326) and a positive large sprocket (327); Two screw bearing seats (325) are inverted at the bottom of the moving crossbeam (210), and screw bearings (326) are assembled at both ends of the small screw (321) and assembled in the screw bearing seats (325); a small screw nut (322) is assembled on the small screw (321), and a positive large sprocket (327) is assembled at the outer end of the small screw (321), and the positive small sprocket (313) drives the positive large sprocket (327) through the positive chain (314); the internal transition of the small screw nut (322) is matched with a column pin (324) with a middle hole, and a copper cylindrical guide sleeve (323) is added between the column pin (324) and the inner hole of the small screw nut (322), and an axial end retaining ring is added at the axial end of the column pin (324) to prevent the column pin (324) and the cylindrical guide sleeve (323) from moving; The wire rope (340) passes through the middle hole of the pin (324), and then the end of the wire rope (340) is bent and locked with a pressure plate screw, so that the end of the wire rope (340) is ring-shaped for hanging the hand chain hoist (350); The hoisting drive mechanism (400) comprises a lateral hand wheel sprocket chain mechanism (410), a lateral chain tensioning mechanism (420), a lateral large sprocket (430), an optical axis (440), an optical axis bearing seat (450), an optical axis bearing (460), a rigid coupling (470), a large screw rod (480) and a cylindrical threaded sleeve (490); A lateral handwheel sprocket chain mechanism (410) is mounted on a lateral hanging plate (160) supporting a steel beam frame (110), and comprises a lateral handwheel (411), a lateral handwheel shaft (412), a lateral small sprocket (413), and a lateral chain (414); the lateral handwheel shaft (412) is mounted on a lateral handwheel sprocket chain mechanism mounting seat (170); the lateral handwheel sprocket chain mechanism mounting seat (170) comprises a lateral bearing seat, in which a lateral bearing is mounted and fixed by a lateral shaft end gland; a lateral small sprocket (413) is mounted on the lateral handwheel shaft (412), the lateral small sprocket (413) meshing with the lateral chain (414); a lateral handwheel (411) is provided at the outer end of the lateral handwheel shaft (412) to drive the lateral small sprocket (413) to rotate; The lateral chain tensioning mechanism (420) comprises a lateral tensioning sprocket (421), a lateral tensioning sprocket shaft (422), a lateral screw top block (423) and a lateral adjustment screw (424); the lateral tensioning sprocket shaft (422) is mounted on the lateral chain tensioning mechanism mounting seat (180), and a lateral tensioning sprocket (421) is mounted on the lateral tensioning sprocket shaft (422) to tension the lateral chain (414); the lateral screw top block (423) and the lateral adjustment screw (424) are mounted on the lateral chain tensioning mechanism mounting seat (180), and the rotation of the lateral adjustment screw (424) can drive the lateral screw top block (423) to move and press the lateral tensioning sprocket shaft (422) to make the lateral tensioning sprocket (421) translate; Optical axis bearings (460) are installed at both ends of the optical axis (440) and are fixed to one end of the top of the supporting steel beam frame (110) through an optical axis bearing seat (450); a lateral large sprocket (430) is installed at the outer end of the optical axis (440), and a lateral small sprocket (413) drives the lateral large sprocket (430) through a lateral chain (414); a large screw rod (480) is connected to the inner end of the optical axis (440) through a rigid coupling (470), and the large screw rod (480) is screwed to a cylindrical threaded sleeve (490), and the cylindrical threaded sleeve (490) is embedded in The middle part of the adjacent moving crossbeam (210); when force is applied to the lateral hand wheel (411), the lateral small sprocket (413) is transmitted to the lateral large sprocket (430) through the lateral chain (414), and then transmitted to the optical axis (440), and the large screw rod (480) is driven to rotate through the rigid coupling (470), and the cylindrical threaded sleeve (490) in the middle part of the moving crossbeam (210) is driven to move along the guide rail (190) at the top of the supporting steel beam frame (110), so as to realize the longitudinal movement adjustment position of the bent pipe.

2. According to claim 1, a device for resetting a shaped curved pipe, characterized in that: The supporting steel beam frame (110) comprises a rectangular frame (111) and columns (112), wherein the rectangular frame (111) is formed by welding four square tubes together, and columns (112) are arranged at the bottom of the rectangular frame (111) for support, and the columns (112) are six square tubes; in order to increase the stability of the supporting steel beam frame (110), five rectangular steel plates are arranged at the bottom of the columns (112) as a seat plate, and the seat plate comprises a foot plate (120) and a full-length foot plate (130), wherein the two columns (112) at one end of the supporting steel beam frame (110) are provided with a full-length foot plate (130) at the bottom, and the other four columns (112) are provided with a foot plate (120) at the bottom; square holes are opened at corresponding positions of the seat plate, square hole pressure plates (140) are added to the square holes, and T-head bolts (150), washers, and nuts are installed, so that the supporting steel beam assembly (100) is locked with the hydraulic press platform.

3. According to claim 2, a device for resetting a shaped curved pipe, characterized in that: The lateral hanging plate (160) is seated on the full-length foot plate (130) at the bottom of the column (112), and the upper part of the lateral hanging plate (160) is welded to the rectangular frame (111) of the supporting steel beam frame (110).

4. According to claim 1, a device for resetting a shaped curved pipe is characterized in that: The movable crossbeam (210) comprises a rectangular tube I (211) and a lining plate I (212). The two rectangular tubes I (211) are welded side by side, and the lining plates I (212) are welded on both sides to enhance the supporting strength and bending strength.

5. According to claim 1, a device for resetting a shaped curved pipe is characterized by: The beam box (240) comprises a channel steel (241), a rectangular tube II (242), a lining plate II (243) and a bottom cover plate (244); Two overlapping channel steels (241) and a rectangular tube II (242) are welded at the bottom of the moving crossbeam (210), and a lining plate II (243) is welded on the back of the channel steel (241) to enhance the load-bearing capacity. Long horizontal holes are opened on both sides of the end surfaces of the channel steel (241) and the lining plate II (243), and a hollow reserved position between the channel steel (241) and the rectangular tube II (242) is used to install a screw nut mechanism (320); a bottom sealing plate (244) is provided at the bottom of the rectangular tube II (242), and the bottom sealing plate (244) is used to seal the screw nut mechanism (320) after it is installed, and a positive hanging plate (250) is fixed to the bottom sealing plate (244) by screws.

6. According to claim 1, a device for resetting a shaped curved pipe is characterized by: The cylindrical threaded sleeve (490) is welded to the moving crossbeam (210), a circular hole is opened in the middle of the moving crossbeam (210), and the cylindrical threaded sleeve (490) is welded thereto, and the cylindrical threaded sleeve (490) and the large screw rod (480) of the lifting drive mechanism (400) are matched with threaded holes for power transmission of the large screw rod (480).

7. A method for resetting a shaped curved pipe, characterized in that: A device for resetting a shaped curved pipe is used, comprising the following steps: Step 1: Use the crane in the workshop to place the bent pipe firmly on the mold; Step 2: fix the support steel beam assembly (100); hoist the shape-correcting bending pipe reset device to the hydraulic press working platform so that the mold is centered relative to the shape-correcting bending pipe reset device; invert the T-head bolt (150) through the square holes of the foot plate (120) and the full-length foot plate (130) and put it into the T-slot of the hydraulic press platform; pass the square hole pressure plate (140) with a circular hole in the middle through the inverted T-head bolt (150) to cover the rectangular square hole; add a spring washer and a flat washer to the end of the T-head bolt (150) and screw in a nut to lock the support steel beam assembly (100) with the hydraulic press platform; Step 3: Adjust the forward handwheel sprocket chain mechanism (310) and the lateral handwheel sprocket chain mechanism (410); by changing the tightening force of the forward adjusting screw (334) on the forward handwheel sprocket chain mechanism mounting seat (260) in the forward hanging plate (250) on the forward screw top block (333), the forward tensioning sprocket shaft (332) drives the forward tensioning sprocket (331) to move, thereby adjusting the tension of the forward chain (314); similarly, by changing the tightening force of the lateral adjusting screw (424) on the lateral handwheel sprocket chain mechanism mounting seat (170) on the lateral hanging plate (160) on the lateral screw top block (423), the lateral tensioning sprocket shaft (422) drives the lateral tensioning sprocket (421) to move, thereby adjusting the tension of the lateral chain (414); Step 4: Apply force clockwise or counterclockwise to the lateral hand wheel (411) of the hoisting drive mechanism (400), and the force is transmitted to the lateral small sprocket (413) through the lateral hand wheel shaft (412), and then transmitted to the lateral large sprocket (430) through the lateral chain (414). The force is then transmitted to the large screw rod (480) through the optical shaft (440) connected to the lateral large sprocket (430) and the rigid coupling (470). The large screw rod (480) rotates to drive the welded movable beam. The cylindrical threaded sleeve (490) in the middle of the support beam assembly (210) is moved, so that the movable crossbeam assembly (200) can move forward and backward along the guide rail (190) above the supporting steel beam frame (110) under the isolation of the polytetrafluoroethylene plate (220); in coordination with this, a force is applied clockwise or counterclockwise to the forward hand wheel (311) of the hoisting left and right adjustment mechanism (300), and the force is transmitted to the forward small sprocket (313) through the forward hand wheel shaft (312), and then transmitted to the forward chain (314). The force is then passed to the positive large sprocket (327), and the small screw nut (322) is driven to move by the small screw (321) connected to the positive large sprocket (327), thereby driving the cylindrical guide sleeve (323) and the pin (324) in the small screw nut (322) to move along the long horizontal holes opened on both sides of the channel steel (241) of the moving crossbeam (210) under the lateral restriction of the shaft end retaining ring, thereby driving the wire rope (340) and the hand chain hoist (350) below to move, thereby achieving Function of adjusting the position of the bent pipe by lateral movement; adjusting the position of the hand chain hoist (350) relative to the lifting ring at the end of the bent pipe by front-back and lateral movement, hanging the lifting ring of the sealing plate at the end of the bent pipe by the hand chain hoist (350), and sliding the moving crossbeam assembly (200) on the other side on the guide rail (190) freely forward and backward by external force, and cooperating with the lateral movement adjustment, so that the hand chain hoist (350) below it hangs the lifting ring at the other end of the bent pipe, and the two hand chain hoists (350) apply force at the same time to lift the bent pipe away from the mold and reach a stable state; Step 5: Use the hand chain hoist (350) to adjust the height of the bent pipe; coordinately adjust the side hand wheels (411) and the forward hand wheel (311) to move the bent pipe in the lateral and front-to-back directions of the mold for fine adjustment, so that the bent pipe gradually approaches the pipe support of the mold, and then the front pipe body of the bent pipe is lifted off so that the side marking line of the mold coincides with the mold marking line, thereby achieving the purpose of accurate resetting; if it is difficult to apply force to the side hand wheel (411) and the forward hand wheel (311) after the bent pipe is lifted, an extension rod can be installed on the side hand wheel (411) and the forward hand wheel (311) to increase the force arm or change to an electric hand wheel to achieve the purpose of fine adjustment.

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