A groove type three-point straightening machine for high-speed welded pipe unit

Abstract

The utility model relates to the technical field of three-point straightening, specifically a slot-type three-point straightening machine for a high-speed welded pipe unit, including a pipeline, a supporting mechanism is arranged inside the pipeline, and the pipeline is equipped with a straightening mechanism. In the utility model, a rod body and a cloth bag are synchronously inserted into the pipeline, and then a rotating rod is rotated to reel in multiple pull ropes while pulling multiple support arms to rotate, so that multiple rods contact the inner wall of the pipeline, and then the bag is filled with fillers and manually closed, and then two main hydraulic cylinders are started to drive two push plates to move toward each other, so that the arc plate clamps the pipeline, and at the same time, the moving frame is manually slid and adjusted and the auxiliary hydraulic cylinder is started to drive the pressure plate to press down the pipeline to straighten it, and the two main hydraulic cylinders are continued to be started to drive the two push plates to continue to move toward each other, so that the two push plates press two adjacent arc plates to generate opposite pulling forces, so that the pipeline is pressed down by the pressure plate while being subjected to the opposite pulling forces at both ends, and the inside of the pipeline is not easy to deform under the pressure due to the fillers.

Description

Technical Field

[0001] The utility model relates to the technical field of three-point straightening, in particular to a slot-type three-point straightening machine for a high-speed welded pipe unit. Background Art

[0002] Generally, straightening machines straighten metal pipes by bending them. Although the metal material will rebound, the residual bending after rebound will inevitably approach zero to achieve the purpose of correction. The three-point straightening machine generally includes three pressure heads, at least one of which is a dynamic pressure head. The bending part of the workpiece is placed between the dynamic pressure head and the static pressure head to operate the driving device for straightening. However, when performing dynamic pressure correction on some pipes with thinner walls, due to the high pressure generated by the straightening machine, the pipe wall may be dented or deformed when subjected to high pressure, causing damage to the pipe, which is inconvenient. Utility Model Content

[0003] The utility model aims to provide a groove-type three-point straightening machine for a high-speed welded pipe unit to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A high-speed welded pipe unit slot-type three-point straightening machine comprises a pipeline, a supporting mechanism is arranged inside the pipeline, and the pipeline is equipped with a straightening mechanism;

[0006] The supporting mechanism includes a rod body, and a plurality of support plates are provided on the outer side wall of the rod body, and a plurality of support arms are rotatably connected to one side of the plurality of support plates, and one end of the plurality of support arms on the same support plate is rotatably connected to the outer side wall of the rod body, a cloth bag is provided at one end of the rod body, and a plurality of embedding holes are opened on the outer side wall of the cloth bag, and the plurality of embedding holes correspond one-to-one to the plurality of support plates, and the outer side walls of the plurality of support plates are fixedly sleeved inside the corresponding embedding holes, the other end of the rod body is fixedly connected to a fixing plate, and a rotating rod is rotatably connected to the center of one side of the fixing plate, a plurality of pull ropes are fixedly wound around the outer side wall of the rotating rod, and the plurality of pull ropes correspond one-to-one to the plurality of support plates, one end of the plurality of pull ropes passes through one side of the fixing plate, and one end of the plurality of pull ropes is fixedly connected to the other end of a support arm on the corresponding support plate.

[0007] Furthermore, two limiting rings are fixedly sleeved on the outer side wall of the rotating rod, and a plurality of pull ropes are located between the two limiting rings, and the distance between the two limiting rings is equal to the cross-sectional diameter of the pull rope.

[0008] The invention further comprises: a rotating handle is fixedly sleeved on one end of the rotating rod.

[0009] The invention further comprises: the straightening mechanism comprises a U-shaped plate, and one side of the two arms of the U-shaped plate is fixedly connected to a main hydraulic cylinder, the movable ends of the two main hydraulic cylinders respectively penetrate the two arms of the U-shaped plate, and the movable ends of the two main hydraulic cylinders are fixedly connected to push plates, one side of the two push plates is provided with a card slot, and one side of the same card slot is provided with two arc plates, one side of the four arc plates is rotatably connected to a support plate, and one end of the four support plates is rotatably connected to a card block, an adjusting screw is rotatably connected between the two ends of the two card slots, and the two One end of each adjusting screw rod passes through one end of an adjacent slot, and the four clamping blocks are slidably engaged in the adjacent slots, and one side of the four clamping blocks is provided with a threaded hole whose inner wall is screwed with the outer wall of the adjacent adjusting screw rod. A moving frame is arranged above the U-shaped plate, and the moving frame includes two arms, and sliding grooves are provided at the bottoms on opposite sides of the U-shaped plate, and the two arms of the moving frame are respectively slidably engaged in the two sliding grooves, and the top surface of the moving frame is fixedly connected to a secondary hydraulic cylinder, and the movable end of the secondary hydraulic cylinder passes through the top surface of the moving frame and is fixedly connected to a pressure plate.

[0010] Furthermore, one side of the four arc-shaped plates is fixedly connected with a rebound spring, and one end of the four rebound springs is fixedly connected with a slider, the four sliders are slidably connected to the inside of adjacent slots, and one side of the four sliders is provided with a circular hole, and the inner side walls of the four circular holes are slidably connected with the outer side walls of the adjacent adjusting screw rods.

[0011] Furthermore, it also includes an auxiliary mechanism, which includes a T-shaped base frame, a guide groove is opened on the bottom surface of the U-shaped plate, and a fixed block is fixedly connected to the center of the guide groove, and the top end of the T-shaped base frame is rotatably connected to the bottom end of the fixed block, and two electric push rods are fixedly connected to both ends of the bottom surface of the T-shaped base frame.

[0012] Furthermore, the movable ends of the two electric push rods are both rotatably connected with slides, and the two slides are both slidably engaged in the guide grooves.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The rod body and the cloth bag are inserted into the pipe synchronously, and then the user rotates the rotating rod to synchronously reel in multiple draw ropes and pull multiple support arms to rotate through the draw ropes, so that multiple resistance rods contact the inner wall of the pipe. Then the user fills the cloth bag with fillers and manually closes the bag mouth. Then the two main hydraulic cylinders are started to drive the two push plates to move toward each other, so that the arc plate clamps the pipe. At the same time, the position of the moving frame is manually adjusted by sliding, and the auxiliary hydraulic cylinder is started to drive the pressure plate to press the pipe downward to straighten it. At the same time, the two main hydraulic cylinders are continued to be started to drive the two push plates to continue to move toward each other, so that the two push plates press the two adjacent arc plates to generate opposite pulling forces, so that the pipe is pressed down by the pressure plate while being subjected to the opposite pulling forces at both ends, so that the pipe is straightened, and the inside of the pipe is not easily deformed under pressure due to the fillers. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the support mechanism structure in the utility model;

[0017] Figure 3 It is an exploded diagram of the support mechanism structure in the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the straightening mechanism and the auxiliary mechanism in the utility model;

[0019] Figure 5 It is an exploded view of the straightening mechanism structure in the utility model.

[0020] In the figure: 100, pipeline; 200, supporting mechanism; 210, rod body; 220, abutment plate; 221, support arm; 230, cloth bag; 231, embedded hole; 240, fixed plate; 241, rotating rod; 242, rotating handle; 243, pull rope; 244, limiting ring; 300, straightening mechanism; 310, U-shaped plate; 311, slide groove; 312, guide groove; 320, main hydraulic cylinder; 330, push plate; 331, clamping groove; 332, adjusting screw rod; 340, arc plate; 341, support plate; 342, clamping block; 350, rebound spring; 351, slider; 360, moving frame; 361, auxiliary hydraulic cylinder; 400, auxiliary mechanism; 410, T-shaped chassis; 420, fixed block; 430, electric push rod; 440, slide plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1 to 5 In the embodiment of the utility model, a high-speed welding pipe unit slot-type three-point straightening machine includes a pipeline 100, a supporting mechanism 200 is arranged inside the pipeline 100, and the pipeline 100 is equipped with a straightening mechanism 300;

[0023] The support mechanism 200 includes a rod body 210, and a plurality of abutment plates 220 are provided on the outer side wall of the rod body 210, and a plurality of support arms 221 are rotatably connected to one side of the plurality of abutment plates 220, and one end of the plurality of support arms 221 on the same abutment plate 220 is rotatably connected to the outer side wall of the rod body 210, a cloth bag 230 is provided at one end of the rod body 210, and a plurality of embedding holes 231 are opened on the outer side wall of the cloth bag 230, and the plurality of embedding holes 231 correspond to the plurality of abutment plates 220 one by one, and the outer side walls of the plurality of abutment plates 220 are fixedly sleeved in the corresponding embedding holes 231, and a fixing plate 240 is fixedly connected to the other end of the rod body 210, and the fixing plate 240 A rotating rod 241 is rotatably connected to the center of one side of the rotating rod 241, and a plurality of pull ropes 243 are fixedly wound around the outer wall of the rotating rod 241, and the plurality of pull ropes 243 correspond to the plurality of abutment plates 220 one by one, one ends of the plurality of pull ropes 243 all pass through one side of the fixed plate 240, and one ends of the plurality of pull ropes 243 are fixedly connected to the other ends of a support arm 221 on the corresponding abutment plate 220, two limiting rings 244 are fixedly sleeved on the outer wall of the rotating rod 241, and the plurality of pull ropes 243 are located between the two limiting rings 244, and the spacing between the two limiting rings 244 is equal to the cross-sectional diameter of the pull rope 243, and a rotating handle 242 is fixedly sleeved on one end of the rotating rod 241.

[0024] Specifically, when in use, the pipe 100 is placed into the straightening mechanism 300 for fixing and straightening. Before straightening the pipe 100, the user inserts the support mechanism 200 into the pipe 100 to support the pipe 100. During specific implementation, the bag mouth of the cloth bag 230 is fixedly connected to one end of the plurality of abutment plates 220, and the rod body 210 together with the plurality of abutment plates 220 are inserted into the pipe 100. Then, the rod body 210 automatically falls on the inner wall of the pipe 100 due to the weight of the abutment plates 220. Then, the user can rotate the rotating rod 241. The rotating handle 242 facilitates the user to rotate the rotating rod 241. Then, the rotating rod 241 rotates and reels the plurality of pull ropes 243, so that the plurality of pull ropes 243 pull one arm 221 on the plurality of abutment plates 220 to drive the plurality of abutment plates 220 to move toward the fixed plate 240, and when the plurality of abutment plates 220 move, they drive the adjacent arms 221 The cloth bags 230 are rotated so that the multiple abutment plates 220 move away from each other and are all close to the inner wall of the pipe 100, so that the cloth bags 230 between the multiple abutment plates 220 are unfolded. The cloth bags 230 are larger as a whole, and the cloth bags 230 between the two abutment plates 220 are partially in a wrinkled state. Then the user can stuff filling materials, such as sand and other items into the space between the rod body 210 and the cloth bags 230 through the gap between the fixed plate 240 and the abutment plate 220 to fill the inside of the pipe 100. Then the user can manually use ropes and other items to tighten and close the bag mouth of the cloth bag 230, so that the inside of the pipe 100 is filled and not easily deformed during straightening. The rod body 210 and the abutment plate 220 are both made of hard materials, making it easier to insert them into the longer pipe 100 to guide the cloth bags 230. The limiting ring 244 can limit multiple pull ropes 243 at the same time to prevent the pull ropes 243 from being entangled together.

[0025] Embodiment 1

[0026] like Figure 1-3As shown, in this embodiment, the straightening mechanism 300 includes a U-shaped plate 310, and one side of the two arms of the U-shaped plate 310 is fixedly connected to a master hydraulic cylinder 320, the movable ends of the two master hydraulic cylinders 320 respectively penetrate the two arms of the U-shaped plate 310, and the movable ends of the two master hydraulic cylinders 320 are fixedly connected to a push plate 330, one side of the two push plates 330 is provided with a slot 331, and one side of the same slot 331 is provided with two arc plates 340, one side of the four arc plates 340 is rotatably connected to a support plate 341, and one end of the four support plates 341 is rotatably connected to a block 342, and an adjusting screw rod 332 is rotatably connected between the two ends of the two slots 331 , and one end of the two adjusting screw rods 332 passes through one end of the adjacent slots 331, the four blocks 342 are slidably engaged in the adjacent slots 331, and one side of the four blocks 342 is provided with a threaded hole whose inner wall is screwed with the outer wall of the adjacent adjusting screw rods 332, a moving frame 360 ​​is arranged above the U-shaped plate 310, and the moving frame 360 ​​includes two arms, and the bottom of the two opposite sides of the U-shaped plate 310 is provided with sliding grooves 311, and the two arms of the moving frame 360 ​​are respectively slidably engaged in the two sliding grooves 311, and the top surface of the moving frame 360 ​​is fixedly connected to the auxiliary hydraulic cylinder 361, and the movable end of the auxiliary hydraulic cylinder 361 passes through the top surface of the moving frame 360 ​​and is fixedly connected to the pressure plate.

[0027] In this embodiment, after inserting the pipe 100 into the support mechanism 200 and adding fillers, the user can place the pipe 100 between the two arms of the U-shaped plate 310, and then the user rotates the two adjusting screws 332 according to the length of the pipe 100. The two adjusting screws 332 are both positive and negative thread screws, so that when the two adjusting screws 332 rotate, they can drive two adjacent blocks 342 to move toward or away from each other, thereby adjusting the distance between the two blocks 342 in the same slot 331. Then the user starts the two main hydraulic cylinders 320 to move the two push plates 330 toward each other, thereby driving the two arc plates 340 adjacent to the two slots 331 and parallel to clamp the pipe 100, and the pipe 100 is adjusted. The pipe 100 is fixed and automatically positioned in the middle of the curved plate 340 for fixing by the pressure of the curved plate 340. Then the user can continue to start the two main hydraulic cylinders 320 to make the two push plates 330 continue to move toward each other, so that the two blocks 342 in the same slot 331 drive the adjacent support plates 341 to rotate due to the pressure of the adjacent push plates 330, so that the two curved plates 340 on one side of the same slot 331 move away from each other, thereby pulling the two ends of the clamped pipe 100 away from each other. At the same time, the user can manually adjust the position of the movable frame 360, and then start the auxiliary hydraulic cylinder 361 to drive the pressure plate to press the pipe 100, so that the pipe 100 is pressed by the pressure plate while being subjected to opposite tension at both ends to be straightened.

[0028] like Figure 4-5As shown, in this embodiment, one side of the four arc plates 340 is fixedly connected to a rebound spring 350, and one end of the four rebound springs 350 is fixedly connected to a slider 351, the four sliders 351 are slidably connected to the inside of the adjacent slots 331, and one side of the four sliders 351 is provided with a circular hole, and the inner walls of the four circular holes are slidably connected to the outer walls of the adjacent adjusting screw rods 332.

[0029] In specific implementation, when in use, after the user has completed straightening the pipe 100, the user can start the two main hydraulic cylinders 320 to reset. At this time, the rebound spring 350 can push the adjacent arc plate 340 to complete the reset, thereby preventing the arc plate 340 from shifting position.

[0030] Embodiment 2

[0031] On the basis of the first embodiment, in order to make up for the difficulty of filling the filler into the cloth bag 230 in the first embodiment, an auxiliary mechanism 400 is provided to facilitate the filling of the cloth bag 230 .

[0032] like Figure 4 As shown, in this embodiment, an auxiliary mechanism 400 is also included, and the auxiliary mechanism 400 includes a T-shaped base frame 410. A guide groove 312 is opened on the bottom surface of the U-shaped plate 310, and a fixed block 420 is fixedly connected to the center of the guide groove 312, and the top end of the T-shaped base frame 410 is rotatably connected to the bottom end of the fixed block 420, and two electric push rods 430 are fixedly connected to both ends of the bottom surface of the T-shaped base frame 410, and the movable ends of the two electric push rods 430 are rotatably connected to slide plates 440, and the two slide plates 440 are slidably engaged in the guide groove 312.

[0033] In specific implementation, when in use, the user can start the two electric push rods 430, so that the movable end of one electric push rod 430 rises and the movable end of the other electric push rod 430 drops, and the two electric push rods 430 drive the U-shaped plate 310 to tilt through the adjacent slides 440, so that the pipeline 100, the U-shaped plate 310 and the cloth bag 230 inside the pipeline 100 are tilted synchronously, and then the user can manually shovel the filling material to gradually send it into the tilted cloth bag 230, and at the same time knock on the pipeline 100 to make the pipeline 100 vibrate so as to facilitate the filling object to fill the inside of the cloth bag 230.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-speed welded pipe unit groove type three-point straightening machine, comprising a pipe (100), characterized in that: A supporting mechanism (200) is provided inside the pipeline (100), and a straightening mechanism (300) is provided in conjunction with the pipeline (100); The support mechanism (200) comprises a rod body (210), and a plurality of abutment plates (220) are arranged on the outer side wall of the rod body (210), one side of the plurality of abutment plates (220) are rotatably connected to a plurality of support arms (221), one end of the plurality of support arms (221) on the same abutment plate (220) are rotatably connected to the outer side wall of the rod body (210), a cloth bag (230) is arranged on one end of the rod body (210), and a plurality of embedding holes (231) are opened on the outer side wall of the cloth bag (230), the plurality of embedding holes (231) correspond one to one with the plurality of abutment plates (220), and the plurality of abutment plates (220) The outer side walls are fixedly sleeved inside the corresponding embedding holes (231); the other end of the rod body (210) is fixedly connected to a fixing plate (240), and one side of the fixing plate (240) is centrally rotatably connected to a rotating rod (241); a plurality of pull ropes (243) are fixedly wound around the outer side wall of the rotating rod (241), and the plurality of pull ropes (243) correspond one to one with the plurality of abutment plates (220); one end of the plurality of pull ropes (243) passes through one side of the fixing plate (240), and one end of the plurality of pull ropes (243) is fixedly connected to the other end of a support arm (221) on the corresponding abutment plate (220).

2. A high-speed welded pipe unit groove three-point straightening machine according to claim 1, characterized in that: Two limiting rings (244) are fixedly sleeved on the outer side wall of the rotating rod (241), and a plurality of pull ropes (243) are located between the two limiting rings (244), and the distance between the two limiting rings (244) is equal to the cross-sectional diameter of the pull rope (243).

3. A high-speed welded pipe unit groove three-point straightening machine according to claim 2, characterized in that: One end of the rotating rod (241) is fixedly sleeved with a rotating handle (242).

4. A high-speed welded pipe unit groove three-point straightening machine according to claim 3, characterized in that: The straightening mechanism (300) comprises a U-shaped plate (310), and one side of the two arms of the U-shaped plate (310) is fixedly connected to a master hydraulic cylinder (320), the movable ends of the two master hydraulic cylinders (320) respectively penetrate the two arms of the U-shaped plate (310), and the movable ends of the two master hydraulic cylinders (320) are fixedly connected to a push plate (330), one side of the two push plates (330) is provided with a card slot (331), and one side of the same card slot (331) is provided with two arc plates (340), one side of the four arc plates (340) is rotatably connected to a support plate (341), and one end of the four support plates (341) is rotatably connected to a card block (342), and an adjusting screw rod (332) is rotatably connected between the two ends of the two card slots (331), and the two One end of each adjusting screw rod (332) passes through one end of an adjacent slot (331), and the four clamping blocks (342) are slidably clamped in the adjacent slots (331), and one side of each of the four clamping blocks (342) is provided with a threaded hole whose inner wall is screwed with the outer wall of the adjacent adjusting screw rod (332). A moving frame (360) is arranged above the U-shaped plate (310), and the moving frame (360) includes two arms. The bottoms of the two opposite sides of the U-shaped plate (310) are provided with sliding grooves (311), and the two arms of the moving frame (360) are respectively slidably clamped in the two sliding grooves (311). The top surface of the moving frame (360) is fixedly connected with a secondary hydraulic cylinder (361), and the movable end of the secondary hydraulic cylinder (361) passes through the top surface of the moving frame (360) and is fixedly connected with a pressure plate.

5. A high-speed welded pipe unit groove three-point straightening machine according to claim 4, characterized in that: One side of the four arc-shaped plates (340) is fixedly connected to a rebound spring (350), and one end of the four rebound springs (350) is fixedly connected to a slider (351), the four sliders (351) are slidably connected to the inside of adjacent slots (331), and one side of the four sliders (351) is provided with a circular hole, and the inner side walls of the four circular holes are slidably sleeved with the outer side walls of adjacent adjusting screw rods (332).

6. A high-speed welded pipe unit groove three-point straightening machine according to claim 5, characterized in that: The invention also comprises an auxiliary mechanism (400), wherein the auxiliary mechanism (400) comprises a T-shaped base frame (410), a guide groove (312) is provided on the bottom surface of the U-shaped plate (310), a fixed block (420) is fixedly connected to the center of the guide groove (312), and the top end of the T-shaped base frame (410) is rotatably connected to the bottom end of the fixed block (420), and two electric push rods (430) are fixedly connected to both ends of the bottom surface of the T-shaped base frame (410).

7. A high-speed welded pipe unit groove three-point straightening machine according to claim 6, characterized in that: The movable ends of the two electric push rods (430) are both rotatably connected to the slide plates (440), and the two slide plates (440) are both slidably engaged in the guide groove (312).

Images