Pipe orifice correcting machine for large-diameter nodular cast iron steel pipe

Abstract

A movable hanging bracket comprises a base and a hanging bracket body arranged on the base, the hanging bracket body comprises a stand column fixedly installed on the base and a cantilever arranged on the top of the stand column, and a suspension driving mechanism and an iron chain hanging tool connected with the suspension driving mechanism are arranged on the cantilever. The supporting mechanism comprises a mounting base, a first frame body and a second frame body, the first frame body and the second frame body are arranged on the mounting base and form an X-shaped supporting frame, the radial size of the annular mounting piece is larger than the pipe diameter of the nodular cast iron steel pipe, and a first fixing assembly and a second fixing assembly are symmetrically arranged on the annular mounting piece. According to the pipe orifice correcting machine for the large-diameter nodular cast iron steel pipe, the nodular cast iron steel pipe can be supported through the X-shaped supporting frame, and the position of the pipe orifice of the nodular cast iron steel pipe can be adjusted and aligned through mutual cooperation of the annular mounting piece, the suspension driving mechanism and the iron chain lifting appliance.

Description

TECHNICAL FIELD

[0001] The utility model relates to nodular cast iron pipe construction technical field, especially large -diameter nodular cast iron steel pipe mouth correction machine. BACKGROUND

[0002] In water supply system, nodular cast iron pipe becomes the key pipe material of conveying tap water by its excellent performance. Its butt joint mode mainly has socket joint and mechanical connection. Among them, flange connection is a common structure form in mechanical connection. Specifically, flange connection is that flange plate is installed at both ends of nodular cast iron pipe respectively, and two flange plates are fastened and connected by bolt, and rubber gasket and other sealing materials are arranged between them, to ensure the sealing property of the connecting part.

[0003] In the butt joint installation link of nodular cast iron pipe, the commonly used installation mode is to complete the carrying and positioning of nodular cast iron pipe by means of hoisting. In actual hoisting operation, the hook and nodular cast iron pipe are mainly connected by steel wire or iron chain. The crane is used as power source, and is connected with nodular cast iron pipe through rope. The operator controls the actions of crane accurately when operating crane, drives the movement of hoisting body, to realize the transfer and butt joint installation of nodular cast iron pipe position.

[0004] In the installation process of flange connection of nodular cast iron pipe, the pipe mouth of nodular cast iron pipe needs to be finely adjusted and accurately aligned. However, under the existing technical conditions, the pipe mouth alignment operation mainly depends on manual operation. Workers need to observe by naked eye and use simple auxiliary tools, manually push or pry nodular cast iron pipe, to try to make the flange plate bolt holes of both ends of pipe mouth accurately aligned. This process not only consumes a lot of manpower, but also due to the limited accuracy of manual operation, it is difficult to ensure that each time can realize rapid and accurate alignment. In actual operation, it often needs to be adjusted repeatedly, consumes a lot of time, and leads to extremely low overall installation efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of large -diameter nodular cast iron steel pipe mouth correction machine to solve the above insufficient in prior art.

[0006] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A kind of large -diameter nodular cast iron steel pipe mouth correction machine, comprising:

[0008] Mobile hanger, the mobile hanger includes base and the hanger being set on the base, the bottom of the base is provided with mobile roller, the hanger includes fixed mounting on the base column and the cantilever being set on the top of the column, the cantilever is provided with suspension drive mechanism and the iron chain lifting appliance being connected with the suspension drive mechanism.

[0009] A support mechanism comprises a mounting base and a first frame and a second frame arranged on the mounting base, the first frame and the second frame form an X-shaped support frame, the bottom of the X-shaped support frame is connected with the mounting base, and the top of the X-shaped support frame forms a V-shaped placing groove for placing a nodular cast iron steel pipe.

[0010] An annular mounting member, the radial dimension of the annular mounting member is greater than the pipe diameter of the nodular cast iron steel pipe, and the annular mounting member is symmetrically provided with a first fixing assembly and a second fixing assembly, and the first fixing assembly and the second fixing assembly are adjustably fixedly connected on the nodular cast iron steel pipe.

[0011] The first fixing assembly and the second fixing assembly of the large-diameter nodular cast iron steel pipe mouth correction machine comprise a clamping plate and a clamping fixing member, and the clamping plate can move in the radial direction of the annular mounting member under the driving of the clamping fixing member.

[0012] The clamping plate of the large-diameter nodular cast iron steel pipe mouth correction machine comprises a connecting plate and side plates located on both sides of the connecting plate, and the side plates and the connecting plate are obtusely connected to form a fixing structure capable of fixing the pipe wall of the nodular cast iron steel pipe.

[0013] The large-diameter nodular cast iron steel pipe mouth correction machine is provided with a guide rod on the side plate, and the annular mounting member is provided with a guide through hole, and the guide rod is movably connected in the guide through hole.

[0014] The large-diameter nodular cast iron steel pipe mouth correction machine is provided with a radial shaft sleeve on the annular mounting member, and the clamping fixing member comprises a fixed screw, the fixed screw is rotatably connected in the radial shaft sleeve, and the driving end of the fixed screw abuts against the connecting plate.

[0015] The large-diameter nodular cast iron steel pipe mouth correction machine further comprises a spring member, which is sleeved on the fixed screw, and the two ends of the spring member are respectively connected with the radial shaft sleeve and the connecting plate.

[0016] The first frame and the second frame of the large-diameter nodular cast iron steel pipe mouth correction machine are provided with support rods on the opposite sides of the V-shaped placing groove.

[0017] The first frame and the second frame of the large-diameter nodular cast iron steel pipe mouth correction machine are provided with a rotating connecting shaft at the middle position, and the two ends of the rotating connecting shaft are provided with end fixing members.

[0018] The large-diameter nodular cast iron steel pipe mouth correcting machine, the mounting seat is provided with a driving screw rod, the driving screw rod is provided with a first threaded section and a second threaded section, the bottom of the first frame body is provided with a first moving seat, the first moving seat is in transmission connection with the first threaded section, the bottom of the second frame body is provided with a second moving seat, and the second moving seat is in transmission connection with the second threaded section.

[0019] The large-diameter nodular cast iron steel pipe mouth correcting machine further comprises moving guide members, the first moving seat and the second moving seat are correspondingly provided with the moving guide members respectively, the moving guide members comprise limiting seats and connecting columns, the connecting columns are fixedly connected at the end portions of the bearing seats of the mounting seat, and the first moving seat and the second moving seat are provided with movement through holes for the connecting columns to pass through.

[0020] In the technical scheme, the large-diameter nodular cast iron steel pipe mouth correcting machine comprises a moving hanger, a supporting mechanism and an annular mounting piece, the moving hanger comprises a base and a hanger provided on the base, the hanger comprises a stand fixedly installed on the base and a cantilever provided at the top of the stand, the cantilever is provided with a suspension driving mechanism and a chain sling connected with the suspension driving mechanism, the supporting mechanism comprises a mounting seat and first and second frame bodies provided on the mounting seat, the first and second frame bodies form an X-shaped support frame, the radial dimension of the annular mounting piece is greater than the pipe diameter of the nodular cast iron steel pipe, the annular mounting piece is symmetrically provided with first and second fixing assemblies, so that, in use, the X-shaped support frame can support the nodular cast iron steel pipe, the annular mounting piece can be fitted and fixed on the nodular cast iron steel pipe, the annular mounting piece, the suspension driving mechanism and the chain sling can be cooperated with each other to adjust the pipe mouth position of the nodular cast iron steel pipe, the pipe mouths of the two nodular cast iron steel pipes are aligned, and the X-shaped support frame is used for supporting and installing after alignment, so that manpower is saved and installation efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0022] Figure 1 The structure schematic view of the large-diameter nodular cast iron steel pipe mouth correcting machine provided by the embodiments of the present application is shown in the figure.

[0023] Figure 2 The front view of the large-diameter nodular cast iron steel pipe mouth correcting machine provided by the embodiments of the present application is shown in the figure.

[0024] Figure 3 The structural schematic diagram of the mobile hanger provided by the embodiment of the utility model;

[0025] Figure 4 The installation schematic diagram of the annular mounting member provided by the embodiment of the utility model;

[0026] Figure 5 The structural schematic diagram of the support mechanism provided by the embodiment of the utility model.

[0027] Mark explanation:

[0028] 1, mobile hanger;11, base;111, mobile roller;12, hanger;13, stand;14, cantilever;15, suspension driving mechanism;16, iron chain lifting appliance;2, support mechanism;21, mounting seat;211, bearing seat;22, X type support frame;221, V type placing groove;222, support rod;223, rotary connection shaft;23, first frame body;231, first mobile seat;24, second frame body;241, second mobile seat;25, driving lead screw;251, first threaded section;252, second threaded section;26, mobile guide component;261, limit seat;262, connecting column;3, annular mounting member;31, first fixed assembly;32, second fixed assembly;33, clamping plate;331, connecting plate;332, side plate;333, guide rod;34, clamping fixing member;341, fixed screw;35, radial shaft sleeve;36, spring member;4, nodular cast iron steel pipe;41, flange. Specific implementation

[0029] In order to make the technical personnel in the prior art better understand the technical scheme of the utility model, the utility model will be introduced further in detail below in conjunction with the drawings.

[0030] As Figures 1-5The utility model provides a large -diameter nodular cast iron steel pipe mouth correction machine, including mobile hanger 1, support mechanism 2 and annular mounting piece 3, mobile hanger 1 includes base 11 and the hanger 12 of setting on base 11, the bottom of base 11 is provided with mobile rolling wheel 111, the hanger 12 includes the column 13 of fixed mounting on base 11 and the cantilever 14 of setting at the top of column 13, the cantilever 14 is provided with suspension drive mechanism 15 and the chain sling 16 of being connected with suspension drive mechanism 15, support mechanism 2 includes mounting seat 21 and the first frame body 23 and second frame body 24 of setting on mounting seat 21, and the first frame body 23 and second frame body 24 form X type support frame 22, the bottom of X type support frame 22 is connected with mounting seat 21, and the top of X type support frame 22 forms V type placement groove 221 for nodular cast iron steel pipe 4 to place, the radial dimension of annular mounting piece 3 is greater than the pipe diameter of nodular cast iron steel pipe 4, and the first fixed assembly 31 and the second fixed assembly 32 are symmetrically provided on annular mounting piece 3, and the first fixed assembly 31 and the second fixed assembly 32 are adjustably fixedly connected on nodular cast iron steel pipe 4.

[0031] Specifically, the base 11 and the hanger 12 are supported by high-strength angle steel, and the mobile rolling wheels 111 are arranged on the bottom of the base 11, the mounting structure for fixing the mounting seat 21 is arranged on the base 11, the hanger 12 is fixedly installed on the base 11, the hanger 12 includes the column 13 and the cantilever 14, the lower end of the column 13 is fixedly installed on the base 11, the connecting end of the cantilever 14 is fixedly connected with the upper end of the column 13, the other end of the cantilever 14 is provided with the suspension drive mechanism 15 and the chain sling 16, the suspension drive mechanism 15 can be a winch, the winch is fixedly welded on the end of the cantilever 14 by high-strength angle steel or channel steel, the chain sling 16 includes a chain and a hook, the hook is forged into a hook shape with a curvature, and thus the annular mounting piece 3 and the nodular cast iron steel pipe 4 can be suspended and moved by the winch and the chain sling 16.

[0032] In the embodiment, the mounting seat 21 is a rectangular seat body, which can be directly placed on the base 11 or movably mounted on the base 11. The first frame body 23 and the second frame body 24 are made of high-strength steel material, and have the same structure, each including two support steel poles and two end connecting rods connected in sequence to form a rectangular frame body. The two end connecting rods are respectively connected to the two ends of the two support steel poles to form a rectangular frame body. The first frame body 23 and the second frame body 24 are connected by a connecting piece to form an X-shaped support frame 22. The bottom of the X-shaped support frame 22 is fixedly connected to the mounting seat 21, and the top of the X-shaped support frame 22 forms a V-shaped placing groove 221 corresponding in size to the pipe opening of the large-diameter nodular cast iron steel pipe 4, so that the large-diameter nodular cast iron steel pipe 4 can be placed in the V-shaped placing groove 221.

[0033] In the embodiment, the size of the annular mounting piece 3 is larger than the size of the nodular cast iron steel pipe 4 and the flange 41, so that the annular mounting piece 3 can be sleeved on the position of the nodular cast iron steel pipe 4 to be fixed. The annular mounting piece 3 is made of high-strength cast steel or forged steel material. The first fixing assembly 31 and the second fixing assembly 32 are symmetrically arranged on the annular mounting piece 3. The first fixing assembly 31 and the second fixing assembly 32 have the same structure and are symmetrically arranged on the annular mounting piece 3. When the annular mounting piece 3 is sleeved on the nodular cast iron steel pipe 4, the first fixing assembly 31 and the second fixing assembly 32 can be used to fixedly connect the annular mounting piece 3 to the nodular cast iron steel pipe 4. Then, the annular mounting piece 3 can be suspended by the suspension driving mechanism 15 and the iron chain lifting tool 16 to adjust the position of the nodular cast iron steel pipe 4. In order to facilitate the suspension of the iron chain lifting tool 16, a suspension structure matched with the iron chain lifting tool 16 can be further arranged on the annular mounting piece 3.

[0034] The utility model provides a large -diameter nodular cast iron steel pipe mouth correction machine, including mobile hanger 1, support mechanism 2 and annular mounting piece 3, mobile hanger 1 includes base 11 and the hanger 12 of setting on base 11, the hanger 12 includes the column 13 of fixed mounting on base 11 and the cantilever 14 of setting on the top of column 13, the cantilever 14 is provided with suspension drive mechanism 15 and the chain sling 16 of being connected with suspension drive mechanism 15, support mechanism 2 includes mounting seat 21 and sets up first frame body 23 and second frame body 24 on mounting seat 21, and first frame body 23 and second frame body 24 form X type support frame 22, the radial dimension of annular mounting piece 3 is greater than the pipe diameter of nodular cast iron steel pipe 4, and the first fixed assembly 31 and the second fixed assembly 32 are provided on annular mounting piece 3 symmetry, so in the use process, through X type support frame 22 can realize the support to nodular cast iron steel pipe 4, and annular mounting piece 3 can be fitted and fixed on nodular cast iron steel pipe 4, through the cooperation of annular mounting piece 3, suspension drive mechanism 15 and chain sling 16, the pipe mouth position of nodular cast iron steel pipe 4 can be adjusted, so that the pipe mouth of two nodular cast iron steel pipes 4 is opposite alignment, and after alignment, through X type support frame 22 is supported and installed, thereby saving manpower, and improving installation efficiency.

[0035] In the embodiment, preferably, the first fixed assembly 31 and the second fixed assembly 32 include clamping plates 33 and clamping fixtures 34, the clamping plates 33 are driven by the clamping fixtures 34 to move radially along the annular mounting piece 3, and a gap for fixing and limiting the nodular cast iron steel pipe 4 is formed between the two clamping plates 33. In the initial state, the distance between the two clamping plates 33 is large, so that the annular mounting piece 3 can be fitted on the nodular cast iron steel pipe 4. Then, under the action of the clamping fixtures 34, the two clamping plates 33 move towards each other until the two clamping plates 33 are fixed on the pipe wall of the nodular cast iron steel pipe 4 from both sides.

[0036] In the embodiment, preferably, the clamping plate 33 includes a connecting plate 331 and side plates 332 located on both sides of the connecting plate 331, the side plates 332 and the connecting plate 331 are connected at an obtuse angle to form a fixing member capable of fixing the pipe wall of the nodular cast iron steel pipe 4. In this way, the clamping plate 33 is similar to an eight-character shape, so that the clamping plate 33 can be fixed on the pipe wall of the nodular cast iron steel pipe 4 without rotating and deviating. The side plates 332 are provided with guide rods 333, the annular mounting piece 3 is provided with guide holes, and the guide rods 333 are movably connected in the guide holes. In this way, two guide rods 333 are correspondingly provided on each clamping plate 33, and the two guide rods 333 are connected one by one in the guide holes. When the clamping plate 33 is driven by the clamping fixture 34, the guide rod 333 limits the movement of the clamping plate 33, so that the guide rod 333 can only move radially along the annular mounting piece 3.

[0037] In the embodiment, preferably, the annular mounting member 3 is provided with a radial shaft sleeve 35 arranged along the radial direction of the annular mounting member 3, the inner wall of the radial shaft sleeve 35 is provided with a screw thread, the clamping fixing member 34 comprises a fixing screw 341 rotatably connected in the radial shaft sleeve 35, the driving end of the fixing screw 341 abuts against the connecting plate 331, the other end of the fixing screw 341 is located outside the annular mounting member 3 and connected with a rotary operation head, and the spring member 36 is sleeved on the fixing screw 341, and the two ends of the spring member 36 are connected with the radial shaft sleeve 35 and the connecting plate 331 respectively.

[0038] When the annular mounting member 3 is fixedly mounted and dismounted, the operation is as follows:

[0039] Annular mounting member 3 mounting: in the initial state, the distance between the two clamping plates 33 is large, and the spring member 36 is in the initial length, at this time, the fixing screw 341 can or can not contact the connecting plate 331. Subsequently, the annular mounting member 3 is sleeved on the position where the ductile iron steel pipe 4 needs to be fixed, the two fixing screws 341 are rotated, so that the two clamping plates 33 move to the center position of the annular mounting member 3, in this process, the guide rod 333 limits the movement of the clamping plate 33, until the two clamping plates 33 are clamped and fixed on the pipe walls on the opposite sides of the ductile iron steel pipe 4, the fixing of the annular mounting member 3 and the ductile iron steel pipe 4 is realized, and at this time, the spring member 36 is in the stretched state.

[0040] Annular mounting member 3 dismounting: if it is necessary to take the annular mounting member 3 off the ductile iron steel pipe 4, the rotary operation head on the fixing screw 341 is rotated in the opposite direction, so that the fixing screw 341 moves away from the ductile iron steel pipe 4, with the movement of the fixing screw 341, the pressing force on the clamping plate 33 disappears gradually, under the action of the spring member 36, the clamping plate 33 returns to the initial state, and the clamping plate 33 is separated from the ductile iron steel pipe 4.

[0041] In the embodiment, preferably, the first frame body 23 and the second frame body 24 are provided with support rods 222 on the opposite sides of the V-shaped placing groove 221, the upper parts of the first frame body 23 and the second frame body 24 are integrally provided with support steel plates, and the support rods 222 are fixedly mounted on the support steel plates, when the ductile iron steel pipe 4 is placed in the V-shaped placing groove 221, the ductile iron steel pipe 4 contacts the two support rods 222.

[0042] In this embodiment, preferably, a rotating connecting shaft 223 is arranged at a middle position between the first frame body 23 and the second frame body 24, and end fixing members are arranged at both ends of the rotating connecting shaft 223, so that the first frame body 23 and the second frame body 24 are connected to form the X-shaped support frame 22 through the rotating connecting shaft 223, and the first frame body 23 and the second frame body 24 can be rotated to a suitable angle. A bearing seat 211 for mounting the driving lead screw 25 is arranged on the mounting base 21, and the driving lead screw 25 is provided with a first threaded section 251 and a second threaded section 252. The bottom of the first frame body 23 is provided with a first moving seat 231, and the bottom of the first frame body 23 is rotatably connected with the first moving seat 231. The first moving seat 231 is in transmission connection with the first threaded section 251. The bottom of the second frame body 24 is provided with a second moving seat 241, and the bottom of the second frame body 24 is also rotatably connected with the second moving seat 241. The second moving seat 241 is in transmission connection with the second threaded section 252.

[0043] Mounting through holes matched with the driving lead screw 25 are arranged on the first moving seat 231 and the second moving seat 241, and a ball screw structure is formed between the first moving seat 231 and the driving lead screw 25 and between the second moving seat 241 and the driving lead screw 25. Thus, when the driving lead screw 25 is rotated, the first moving seat 231 and the second moving seat 241 can be correspondingly driven to move along the axial direction of the driving lead screw 25.

[0044] When it is necessary to adjust the height of the X-shaped support frame 22 to adapt to the ductile iron steel pipes 4 with different diameters or to perform pipe opening correction operation, an operator rotates the driving lead screw 25 by hand or by using an electric tool. Since the screw threads of the first threaded section 251 and the second threaded section 252 are opposite in direction, the first moving seat 231 and the second moving seat 241 will move in opposite directions along the driving lead screw 25. For example, when the driving lead screw 25 is rotated clockwise, the first moving seat 231 moves leftward along the first threaded section 251, and the second moving seat 241 moves rightward along the second threaded section 252. With the relative movement of the two moving seats, the bottoms of the first frame body 23 and the second frame body 24 connected therewith are respectively driven to expand outward. Since the first frame body 23 and the second frame body 24 are connected to form the X-shaped support frame 22 structure through the rotating connecting shaft 223, the top of the X-shaped support frame 22 will gradually lower during the outward expansion of the bottoms. Conversely, when the driving lead screw 25 is rotated counterclockwise, the first moving seat 231 and the second moving seat 241 will move toward each other, and the bottoms of the first frame body 23 and the second frame body 24 will be driven to contract inward, and the top of the X-shaped support frame 22 will gradually rise.

[0045] In the embodiment, preferably, the first moving seat 231 and the second moving seat 241 are respectively provided with a moving guide component 26, the moving guide component 26 comprises a movement limiting seat 261 and a connecting column 262, the limiting seat 261 is arranged in parallel with the bearing seat 211, and two limiting seats 261 are arranged between two bearing seats 211, the two limiting seats 261 and the two bearing seats 211 are located on the same straight line, the limiting seat 261 is provided with a through hole through which the driving lead screw 25 passes and can rotate, two connecting columns 262 are arranged on each limiting seat 261, and the other end of the connecting column 262 is fixedly connected to the bearing seat 211 of the mounting seat 21, the first moving seat 231 and the second moving seat 241 are provided with movement through holes through which the connecting column 262 passes, that is, the first moving seat 231 and the second moving seat 241 are provided with two movement through holes, so that the bearing seat 211 and the limiting seat 261 form a limiting structure for limiting the movement of the first moving seat 231 and the second moving seat 241, that is, the first moving seat 231 and the second moving seat 241 can only move along the connecting column 262.

[0046] The movement stroke length of the first moving seat 231 and the second moving seat 241 corresponds to the connecting column 262, taking the first moving seat 231 as an example, when the first moving seat 231 is driven to move to the left and abuts against the bearing seat 211, the first moving seat 231 cannot continue to move, when the first moving seat 231 moves to the right and abuts against the limiting seat 261, the first moving seat 231 also cannot continue to move, and the advantage of such arrangement is that in the initial state, the first moving seat 231 can be located at the leftmost position, at this time, the first moving seat 231 abuts against the bearing seat 211, and the second moving seat 241 is located at the rightmost position, at this time, the second moving seat 241 also abuts against the bearing seat 211, since there is an impact force in the direction of one end of the hoisted ductile iron steel pipe 4, at this time, the two bearing seats 211 support the first moving seat 231 and the second moving seat 241 respectively, so that the support strength of the X-shaped support frame 22 can be improved.

[0047] In the embodiment, in the process of specific operation, the specific steps are as follows:

[0048] In the first step, the X-shaped support frame 22 is adjusted, the first moving seat 231 is located at the leftmost position, the first moving seat 231 abuts against the bearing seat 211, the second moving seat 241 is located at the rightmost position, and the second moving seat 241 also abuts against the bearing seat 211, and the one end of the ductile iron steel pipe 4 to be connected and installed is placed on the X-shaped support frame 22 through the suspension device.

[0049] Second step, install the ring-shaped mounting member 3: the ring-shaped mounting member 3 is sleeved on the position where the ductile cast iron steel pipe 4 needs to be fixed, two fixed screw rods 341 are rotated, so that the two clamping plates 33 are moved to the center position of the ring-shaped mounting member 3, until the two clamping plates 33 are clamped on the pipe walls on the opposite sides of the ductile cast iron steel pipe 4 respectively, the fixing of the ring-shaped mounting member 3 and the ductile cast iron steel pipe 4 is realized.

[0050] Third step, the pipe opening position adjustment of the ductile cast iron steel pipe 4: the ring-shaped mounting member 3 is suspended by the suspension driving mechanism 15 and the iron chain lifting appliance 16, the pipe opening position adjustment of the ductile cast iron steel pipe 4 is realized, when the pipe opening is adjusted to the appropriate position, the position of the X-shaped support frame 22 is moved and the height of the X-shaped support frame 22 is adjusted, so that the X-shaped support frame 22 supports the ductile cast iron steel pipe 4.

[0051] Fourth step, the ring-shaped mounting member 3 is disassembled: when the X-shaped support frame 22 supports the ductile cast iron steel pipe 4, the ring-shaped mounting member 3 is taken off from the ductile cast iron steel pipe 4, the specific operation is as follows: the rotating operation head on the fixed screw rod 341 is rotated in the reverse direction, so that the fixed screw rod 341 moves away from the ductile cast iron steel pipe 4, with the movement of the fixed screw rod 341, the pressing force on the clamping plate 33 disappears gradually, under the action of the spring member 36, the clamping plate 33 returns to the initial state, and the clamping plate 33 is separated from the ductile cast iron steel pipe 4. Finally, the flanges 41 on the two ductile cast iron steel pipes are butt-jointed and fixed.

[0052] The above only describes some exemplary embodiments of the utility model in a descriptive manner, without doubt, for ordinary skilled in the art, the described embodiments can be modified in various different ways without deviating from the spirit and scope of the utility model. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the utility model claims.

Claims

1. A large diameter ductile iron pipe spigot straightening machine characterized by, include: A mobile gantry, comprising a base and a gantry mounted on the base, wherein the bottom of the base is provided with movable rollers, and the gantry comprises a column fixedly mounted on the base and a cantilever mounted on the top of the column, wherein the cantilever is provided with a suspension drive mechanism and a chain lifting device connected to the suspension drive mechanism; The support mechanism includes a mounting base and a first frame and a second frame disposed on the mounting base. The first frame and the second frame form an X-shaped support frame. The bottom of the X-shaped support frame is connected to the mounting base, and the top of the X-shaped support frame forms a V-shaped placement groove for placing ductile iron steel pipes. An annular mounting component, wherein the radial dimension of the annular mounting component is larger than the diameter of the ductile iron steel pipe, and a first fixing component and a second fixing component are symmetrically arranged on the annular mounting component, the first fixing component and the second fixing component being adjustablely and fixedly connected to the ductile iron steel pipe.

2. The large diameter ductile iron pipe spigot straightening machine of claim 1 wherein, The first fixing component and the second fixing component include a clamping plate and a clamping fixing member, wherein the clamping plate is driven by the clamping fixing member to move radially along the annular mounting member.

3. The large diameter ductile iron pipe bell and spigot correcting machine according to claim 2, wherein, The clamping plate includes a connecting plate and side plates located on both sides of the connecting plate. The side plates and the connecting plate are connected at an obtuse angle to form a fixing structure that can fix the pipe wall of the ductile iron steel pipe.

4. The large diameter ductile iron pipe spigot straightening machine of claim 3 wherein, A guide rod is provided on the side plate, and a guide through hole is provided on the annular mounting component. The guide rod is movably connected in the guide through hole.

5. The large diameter ductile iron pipe spigot straightening machine of claim 4 wherein, The annular mounting component is provided with a radial bushing, and the clamping and fixing component includes a fixing screw. The fixing screw is rotatably connected inside the radial bushing, and the driving end of the fixing screw abuts against the connecting plate.

6. The large diameter ductile iron pipe bell and spigot correcting machine of claim 5 wherein, It also includes a spring element, which is sleeved on the fixing screw, and the two ends of the spring element are respectively connected to the radial bushing and the connecting plate.

7. The large diameter ductile iron pipe bell and spigot correcting machine according to claim 1, wherein, The first frame and the second frame are each provided with support rods on opposite sides of the V-shaped placement slot.

8. The large diameter ductile iron pipe bell and spigot correcting machine of claim 7 wherein, A rotating connecting shaft is provided at the middle position of the first frame and the second frame, and end fixing parts are provided at both ends of the rotating connecting shaft.

9. The large diameter ductile iron pipe bell and spigot correcting machine of claim 8 wherein, The mounting base is provided with a drive screw, which has a first threaded section and a second threaded section. The bottom of the first frame is provided with a first movable seat, which is connected to the first threaded section. The bottom of the second frame is provided with a second movable seat, which is connected to the second threaded section.

10. The large diameter ductile iron pipe bell and spigot correcting machine of claim 9 wherein, It also includes a movable guide component, and the first movable seat and the second movable seat are respectively provided with the movable guide component. The movable guide component includes a limiting seat and a connecting column. The end of the connecting column is fixedly connected to the bearing seat of the mounting seat. The first movable seat and the second movable seat are provided with a motion through hole for the connecting column to pass through.

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