CN117773402A - Pipeline welding equipment capable of eliminating magnetic bias blowing - Google Patents

Abstract

The invention relates to the field of pipeline welding equipment, and discloses pipeline welding equipment for eliminating magnetic bias blowing, which comprises a frame body, a welding device for welding a pipeline body and a conductive block, wherein the pipeline body is arranged on the frame body, the welding device and the conductive block are electrically connected with the pipeline body, and are respectively connected with the anode and the cathode of a power supply to form current conduction.

Description

Pipeline welding equipment capable of eliminating magnetic bias blowing

Technical Field

The invention relates to the field of pipeline welding equipment, in particular to pipeline welding equipment capable of eliminating magnetic blow.

Background

When the magnetic blow-out is direct current arc welding, arc blow-out is generated due to the action of electromagnetic force in a welding loop, when pipeline welding is performed, welding current simultaneously generates a magnetic field around a workpiece, and because factors such as the relative position and the workpiece material and the like between two electrodes continuously change in movement, the magnetic field is always in the change, so that the magnetic blow-out is caused, dense air holes on a welding line are caused, and the welding quality is influenced, so that welding equipment capable of eliminating the magnetic blow-out is needed.

Disclosure of Invention

The present invention provides a pipe welding apparatus that eliminates magnetic blow-out that overcomes the deficiencies described in the background art.

The technical scheme adopted for solving the technical problems is as follows:

the pipeline welding equipment for eliminating magnetic bias blowing comprises a frame body, a welding device for welding a pipeline body and a conductive block, wherein the pipeline body is arranged on the frame body, the welding device and the conductive block are electrically connected with the pipeline body, and the welding device and the conductive block are respectively connected with the anode and the cathode of a power supply and form current conduction;

the rack body is provided with a conductive fixed wheel and a first motor, the conductive fixed wheel is symmetrically arranged on the surface of the rack body, the peripheral surface of the conductive fixed wheel is provided with a latch, the output shaft of the first motor is provided with a toothed bar, the toothed bar is meshed with the latch on the peripheral surface of the conductive fixed wheel, and the pipeline body is arranged in the conductive fixed wheel so as to drive the pipeline body to rotate at a constant speed through the first motor;

the conductive fixed wheel comprises an outer ring, an inner ring and conductive electric push rods, the outer ring is sleeved outside the inner ring, the conductive electric push rods are annularly arranged in the outer ring, output shafts of the conductive electric push rods extend towards dots of the outer ring through the inner ring, and output shafts of all the conductive electric push rods are propped against the surface of the pipeline body;

the support members are symmetrically arranged on the left side and the right side of the conductive fixed wheel, the side face of the outer ring is provided with an annular groove, and the surface of each support member is connected with an embedded block embedded into the annular groove.

A preferred technical scheme is as follows: when the conductive block is connected with a power supply, current sequentially flows through the support piece, the conductive fixed wheel and the conductive pipe body, and the conductive pipe body and the welding device propped against the surface of the pipe body form current anode and cathode conduction.

A preferred technical scheme is as follows: the conductive blocks are annularly arranged on the peripheral surface of the pipeline body, all the conductive blocks are connected into a power supply and are electrically connected with the pipeline body, and the conductive blocks form current positive and negative conduction with a welding device which is abutted against the surface of the pipeline body.

A preferred technical scheme is as follows: the conductive block comprises a fixed shell, a conductive piece and a magnet, wherein the fixed shell is arranged on the conductive piece, a mounting groove is formed in the fixed shell, and the magnet is arranged in the mounting groove;

the side surface of the conductive piece is provided with a first notch, the lower end of the conductive piece is provided with a second notch, and when the magnet is installed in the installation groove, the side surface of the magnet is respectively embedded into the first notch and the second notch;

the section of the conductive piece is shaped, and when the conductive block is connected to a power supply, current anode and cathode conduction is formed through the conductive piece and the welding device.

A preferred technical scheme is as follows: the conductive piece is provided with a connecting part for connecting a power supply on one side close to the fixed shell, the surface of the fixed shell is provided with a corresponding opening, the connecting part extends into the opening, a gap exists between the opening and the surface of the connecting part, and the upper side and the lower side of the connecting part are respectively provided with a second clamping groove which is concave inwards;

the edge of one side of the lower part of the conductive piece far away from the first notch is provided with a hook block, and the surface of the fixed shell is provided with a corresponding clamping groove, when the fixed shell is arranged on the conductive piece, the hook block is embedded into the clamping groove.

A preferred technical scheme is as follows: the welding device comprises a movable welding machine, a sliding block and a wire rail, wherein a first sliding groove is formed in the side face of the wire rail, the sliding block is arranged on the first sliding groove in a sliding mode, two ends of the first sliding groove do not extend to two side tail ends of the wire rail, and a placing table for supporting the movable welding machine is arranged on the sliding block;

the surface of the placing table is provided with a groove which is concave inwards, and the movable welding machine is clamped in the groove.

A preferred technical scheme is as follows: the movable welding machine comprises a shell and a driving mechanism arranged in the shell, wherein the driving mechanism comprises driving rods and welding rod clamps which are symmetrically arranged, and the welding rod clamps are sleeved outside the two driving rods and form screw transmission connection with the driving rods;

the welding rod fixture is provided with a welding rod, and when the welding rod fixture is externally connected with a power supply and the welding rod is propped against the surface of the pipeline body, the welding rod fixture and a conductive block of the externally connected power supply form current anode and cathode conduction.

A preferred technical scheme is as follows: the two driving rods comprise hollow tubes and screw rods, and the screw rods are sleeved outside the hollow tubes;

the movable welding machine further comprises an air cylinder and a second motor, wherein one driving rod is communicated with the output end of the air cylinder through a hollow pipe, and the other driving rod is connected with the output shaft of the second motor through the hollow pipe;

the two sides of the hollow tube are provided with sliding blocks, the screw rod is internally provided with a second sliding groove for the hollow tube to slide, and the sliding blocks are embedded into the second sliding groove.

A preferred technical scheme is as follows: the welding rod clamp comprises a clamping piece monomer, a threaded connection sliding pipe and a fixed rod, wherein the clamping piece monomer is arranged in an up-down symmetrical mode, and the threaded connection sliding pipe is respectively arranged at the left end and the right end of the clamping piece monomer positioned at the lower part;

two clamping piece monomers constitute the anchor clamps that are used for the clamping welding rod, and the anchor clamps are flaring form structure in keeping away from one side of pipeline body, and are provided with dead lever and torsional spring in the flaring form structure, the one end of dead lever is fixed on threaded connection sliding tube, and the torsional spring is then overlapped and is established outside the dead lever.

A preferred technical scheme is as follows: the upper and lower side surfaces of the clamping piece monomer positioned at the lower part are respectively provided with a first clamping groove which is concave inwards.

Compared with the background technology, the technical proposal has the following advantages:

compared with the pipeline welding device in the prior art, the pipeline welding device has the advantages that the conducting blocks which are connected to the supporting piece but are arranged in a matrix form or are arranged in a matrix form are directly connected to the pipeline body in an electric connection mode, uniform current access points can be formed on the surface of the pipeline body, and the technical problem of magnetic bias blowing in the background art can be effectively solved.

According to the welding rod clamp, the cylinder drives the screw rod to stretch and move in a mode of increasing air pressure, and meanwhile, the output shaft of the second motor drives the screw rod to rotate, so that the screw rod and the welding rod clamp form screw rod transmission connection to drive the welding rod clamp to slide on the surface of the screw rod, and therefore stretching can be performed through limiting formed by the sliding block and the second sliding groove without affecting sliding of the welding rod clamp, synchronous driving of the welding rod clamp to move is achieved, welding rods can regularly and uniformly move towards the pipeline body when the welding device performs welding work, welding stability is improved, and magnetic bias blowing phenomenon is avoided.

When the two pipeline bodies are fixed and welded, the two pipeline bodies can be respectively fixed on the two conductive fixed wheels, the conductive electric push rods in the conductive fixed wheels are driven to extend outwards to prop against the surfaces of the adjacent pipeline bodies to form fixation, then the toothed bars can be driven by the first motors, the toothed bars are meshed with the clamping teeth on the surfaces of the conductive fixed wheels to drive the pipeline bodies to rotate circumferentially, welding rods arranged on the electrified welding device can prop against the connecting ends of the two pipeline bodies to weld while the pipeline bodies rotate, and in order to avoid consistency and linkage of welding progress and the rotating speed of the pipeline bodies, the rotating speed of the pipeline bodies can be controlled by the first motors, so that the welding device has sufficient time to weld and prepare for replacing welding rods.

The conductive piece is arranged to be convenient for fixing the conductive piece on the side surface of the supporting piece and also can be fixed on the surface of the pipeline body, the conductive piece can be tightly abutted against the surface of the supporting piece or the pipeline body through the magnetic attraction property of the magnet, when the conductive piece is adsorbed on the side surface of the supporting piece, the side surface of the magnet is abutted against the surface of the supporting piece, and when the conductive piece is adsorbed on the surface of the pipeline body, the abutment is realized through the conductive piece, and as shown in the figure, the magnet does not protrude out of the side end surface of the conductive piece and the lower end surface, namely, gaps exist between the magnet and the surface of the supporting piece or the pipeline body, so that the conductive piece can be effectively tightly abutted against the surface of the supporting piece and the pipeline body under the magnetic attraction of the magnet.

Drawings

The invention is further described below with reference to the drawings and examples.

Fig. 1 is a schematic view of a conductive block attached to a support surface.

Fig. 2 is a schematic view of the conductive block attached to the surface of the pipe body.

Fig. 3 is a three-dimensional schematic of a conductive stator.

Fig. 4 is a three-dimensional schematic diagram of the different viewing angles of fig. 1.

Fig. 5 is an exploded view of fig. 1.

Fig. 6 is a three-dimensional schematic of a welding apparatus.

Fig. 7 is an exploded view of fig. 6.

Fig. 8 is an exploded view of the movable welder.

Fig. 9 is a schematic cross-sectional view of a transfer bar.

FIG. 10 is a three-dimensional schematic of a welding rod fixture.

FIG. 11 is an exploded view of the electrode holder.

Fig. 12 is a three-dimensional schematic of a conductive block.

Fig. 13 is an exploded view of the conductive block.

Fig. 14 is a schematic view of fig. 13 from a different viewing angle.

Fig. 15 is a schematic three-dimensional view of a conductive block in half-section.

In the figure: the rack body 1, the supporting piece 11, the embedded block 111, the conductive fixed wheel 12, the outer ring 121, the annular groove 1211, the inner ring 122, the conductive electric push rod 123, the first motor 13 and the toothed bar 131;

the welding device 2, the movable welding machine 21, the housing 211, the driving mechanism 212, the hollow tube 2121, the sliding block 121a, the screw rod 2122, the second sliding chute 122a, the welding rod clamp 2123, the clamping piece single body 123a, the placing hole 23a1, the first clamping groove 23a2, the threaded connection sliding tube 123b, the fixed rod 123c, the torsion spring 123d, the air cylinder 213, the second motor 214, the welding device 2, the sliding block 22, the placing table 221, the wire rail 23 and the first sliding chute 231;

the conductive block 3, the fixing case 31, the opening 311, the clamping groove 312, the mounting groove 313, the conductive piece 32, the connecting portion 321, the second clamping groove 3211, the first notch 322, the second notch 323, the hooking block 324, and the magnet 33;

a pipe body 4.

Detailed Description

As shown in fig. 1-15, a pipe welding device for eliminating magnetic blow comprises a frame 1, a welding device 2 for welding a pipe body 4, and a conductive block 3, wherein the pipe body 4 is installed on the frame 1, the welding device 2 and the conductive block 3 are electrically connected with the pipe body 4, and the welding device 2 and the conductive block 3 are respectively connected with the anode and the cathode of a power supply and form current conduction.

Further, the frame body 1 is provided with a conductive fixed wheel 12 and a first motor 13, the conductive fixed wheel 12 is symmetrically arranged on the surface of the frame body 1, the circumferential surface of the conductive fixed wheel 12 is provided with a latch in an array, an output shaft of the first motor 13 is provided with a toothed bar 131, the toothed bar 131 is meshed with the latch on the circumferential surface of the conductive fixed wheel 12, and the pipeline body 4 is arranged in the conductive fixed wheel 12 so as to drive the pipeline body 4 to rotate at a constant speed through the first motor 13;

the conductive fixed wheel 12 includes an outer ring 121, an inner ring 122, and a conductive electric push rod 123, wherein the outer ring 121 is sleeved outside the inner ring 122, the conductive electric push rod 123 is annularly arranged in the outer ring 121, and the output shaft of the conductive electric push rod 123 extends toward the dots of the outer ring 121 through the inner ring 122, and the output shafts of all the conductive electric push rods 123 are propped against the surface of the pipe body 4;

the surface of the frame body 1 is provided with supporting pieces 11 near the side surface and the upper end of the conductive fixed wheel 12 respectively, the supporting pieces 11 are symmetrically arranged at the left side and the right side of the conductive fixed wheel 12, the side surface of the outer ring 121 is provided with an annular groove 1211, and the surface of each supporting piece 11 is connected with an embedded block 111 embedded in the annular groove 1211;

based on the above, in the present invention as shown in fig. 1-5, when two pipe bodies 4 are fixed and welded, the two pipe bodies 4 can be fixed on the two conductive fixed wheels 12 respectively, the conductive electric push rods 123 in the conductive fixed wheels 12 are driven to extend outwards and abut against the surfaces of the adjacent pipe bodies 4 to form fixation, then the toothed bars 131 can be driven by the first motors 13, the toothed bars 131 are engaged with the teeth on the surfaces of the conductive fixed wheels 12 to drive the pipe bodies 4 to rotate circumferentially, and welding rods mounted on the energized welding device 2 can abut against the connecting ends of the two pipe bodies 4 to weld while the pipe bodies 4 rotate, so as to avoid consistency and linkage of welding progress and rotation speed of the pipe bodies 4, the rotation speed of the pipe bodies 4 can be controlled by the first motors 13, and the welding device 2 has sufficient time to perform welding work and prepare for replacing welding rods.

In the invention, two modes of forming the current conduction of the welding device 2 and the conductive block 3 are adopted, and the connection relation with different effects is formed mainly by changing the installation position of the conductive block 3;

the first connection relationship is: the conductive block 3 is connected to the side of the supporting piece 11, when the conductive block 3 is connected to a power supply, current sequentially flows through the supporting piece 11 and the conductive fixed wheel 12 and conducts positive and negative poles of the current to the welding device 2 abutting against the surface of the pipeline body 4 in the pipeline body 4, the supporting effect of the supporting piece 11 on the conductive fixed wheel 12 can be guaranteed, the conductive fixed wheel 12 and the pipeline body 4 are driven to rotate through the first motor 13, the fixed quantity of the conductive block 3 can be effectively reduced in the connection mode, the whole equipment is enabled to be tidier, the quantity of wires exposed in the air is reduced, the current needs to be conducted to the end parts of all conductive electric push rods 123 in the conductive fixed wheel 12 through the supporting piece 11, and then the end parts of the conductive electric push rods 123 are uniformly conducted to the peripheral surface of the pipeline body 4 to form an array type power supply access end, and materials of the conductive electric push rods 123 and the inner ring 122 need to be replaced by materials with good conductive wire materials such as brass, gold, silver and the like in the connection mode;

the second connection relationship is: the conductive blocks 3 are annularly arranged on the peripheral surface of the pipeline body 4, all the conductive blocks 3 are connected with a power supply and are electrically connected with the pipeline body 4, and a current anode and cathode conduction is formed with the welding device 2 which is abutted against the surface of the pipeline body 4, when the conductive blocks 3 are connected with the power supply, the current can be directly connected with the peripheral surface of the pipeline body 4 to form a more direct power supply connection, the stability of the current connection is improved by reducing the transmission path and the path of the current and the medium, but as the power supply is required to be connected with each conductive block 3, the number of cables exposed in the air is increased along with the increase of the number of the conductive blocks 3, a cable collecting structure is required to be arranged outside, and the explanation is that the conductive blocks 3 are directly arranged on the peripheral surface of the pipeline body 4, and the cables connected with each conductive block 3 can rotate along with the rotation of the pipeline body 4 driven by the first motor 13, but the pipeline body 4 only needs to rotate once at most the current, because the reverse rotation of the pipeline body 4 can be realized through the first motor 13;

the two connection modes are different embodiments of the application, so that the two connection modes have the advantages of playing a role of 'better', compared with the pipeline welding device in the prior art, the current connection mode has the advantages that the conductive electric push rods 123 connected to the supporting piece 11 are electrically connected or the conductive blocks 3 arranged in a matrix form are directly electrically connected to the pipeline body 4, uniform current access points can be formed on the surface of the pipeline body 4, the technical problem of 'magnetic bias blowing' in the background art can be effectively solved, and the ground wire positions of balanced current magnetic fields and regular welded objects become the key points for solving the technical problem of 'magnetic bias blowing' because the magnetic bias blowing is due to the instability of the current magnetic fields and the ground wire positions of the connected welded objects.

Further, the conductive block 3 includes a fixing shell 31, a conductive member 32, and a magnet 33, the fixing shell 31 is mounted on the conductive member 32, a mounting groove 313 is formed in the fixing shell 31, the magnet 33 is mounted in the mounting groove 313, a first notch 322 is formed on a side surface of the conductive member 32, a second notch 323 is formed at a lower end of the conductive member, when the magnet 33 is mounted in the mounting groove 313, the side surface of the magnet 33 is respectively embedded into the first notch 322 and the second notch 323, the cross section of the conductive member 32 is L-shaped, and when the conductive block 3 is connected to a power supply, positive and negative current conduction is formed between the conductive member 32 and the welding device 2;

the conductive piece 32 is arranged in an L shape so that the conductive piece 3 can be fixed on the side surface of the supporting piece 11 or the surface of the pipeline body 4, the conductive piece 3 can be tightly abutted against the surface of the supporting piece 11 or the surface of the pipeline body 4 through the magnetic attraction property of the magnet 33, when the conductive piece 3 is adsorbed on the side surface of the supporting piece 11, the side surface of the magnet 33 is abutted against the surface of the supporting piece 11, and when the conductive piece 3 is adsorbed on the surface of the pipeline body 4, the abutting is realized through the conductive piece 32, and as shown in the figure, the magnet 33 does not protrude out of the side end surface and the lower side end surface of the conductive piece 32, namely, gaps exist between the magnet 33 and the surface of the supporting piece 11 or the pipeline body 4, so that the conductive piece 32 can be effectively tightly abutted against the surfaces of the supporting piece 11 and the pipeline body 4 under the magnetic attraction of the magnet 33;

the conductive member 32 has a connection portion 321 near the fixing housing 31, the surface of the fixing housing 31 has a corresponding opening 311, the connection portion 321 extends into the opening 311, a gap exists between the opening 311 and the surface of the connection portion 321, and both the upper and lower sides of the connection portion 321 have second clamping grooves 3211 recessed inwards, when the power is connected, a power line can be directly wound around the connection portion 321, or a conductive clip can be connected to the end of the conductive line, and electrical connection is formed on the surface of the second clamping grooves 3211 through the conductive clip, so as to avoid falling of the conductive line;

in order to improve the connection tightness between the fixing shell 31 and the conductive member 32, a hook 324 is disposed at an edge of a lower portion of the conductive member 32 away from the first notch 322, and a corresponding slot 312 is disposed on a surface of the fixing shell 31, and when the fixing shell 31 is mounted on the conductive member 32, the hook 324 is embedded into the slot 312.

Further, the welding device 2 comprises a movable welding machine 21, a sliding block 22 and a wire rail 23, a first sliding groove 231 is arranged on the side surface of the wire rail 23, the sliding block 22 is arranged on the first sliding groove 231 in a sliding way, two ends of the first sliding groove 231 do not extend to two side ends of the wire rail 23, a placing table 221 for supporting the movable welding machine 21 is arranged on the sliding block 22, an inward concave groove is formed on the surface of the placing table 221, the movable welding machine 21 is clamped in the groove, when the movable welding machine 21 is connected with a power supply and is installed into a welding rod, the welding rod is abutted against the surface of the pipeline body 4 to conduct current, and then the welding work of the pipeline body 4 is carried out, the arrangement of the wire rail 23 and the sliding block 22 is to facilitate the movable welding machine 21 to fix the welding angle, avoid the possibility of magnetic bias blow caused by the increase of the deviation of the welding angle, and the regular welding can be performed by manually repeatedly pushing the movable welding machine 21 and rotating the pipeline body 4 in cooperation with the guiding of the wire rail 23, or the sliding block 22 can be driven to reciprocate by installing a screw transmission mechanism on the sliding block 22 and the wire rail 23 through the forward and backward rotation of the screw, and the welding rod is certainly shortened, but the movable welding machine 21 in the application is fixed, so the following arrangement is made in the invention in order to solve the problem that the welding rod is shortened and can not be welded:

the movable welding machine 21 comprises a shell 211 and a driving mechanism 212 arranged in the shell 211, the driving mechanism 212 comprises driving rods and welding rod clamps 2123 which are symmetrically arranged, the welding rod clamps 2123 are sleeved outside the two driving rods and form screw transmission connection with the driving rods, welding rods are arranged on the welding rod clamps 2123, when the welding rod clamps 2123 are externally connected with a power supply and the welding rods are abutted against the surface of the pipeline body 4, current anode and cathode conduction is formed between the welding rod clamps and a conductive block 3 of the externally connected power supply, the two driving rods comprise hollow tubes 2121 and screw rods 2122, the screw rods 2122 are sleeved outside the hollow tubes 2121, the movable welding machine 21 further comprises an air cylinder 213 and a second motor 214, one driving rod is communicated with the output end of the air cylinder 213 through the hollow tube 2121, the other driving rod is connected with the output shaft of the second motor 214 through the hollow tube 2121, the side of the movable welding machine 21 is provided with a control button for simultaneously controlling the cylinder 213 and the second motor 214 to simultaneously operate, but the cylinder 213 and the second motor 214 can be controlled not only by the control button, but also by a terminal, and the terminal has various options, such as a control panel, a small program, a network end or an operation desk based on internet, so the invention does not further limit the mode of simultaneously operating the control cylinder 213 and the second motor 214, only needs to meet the requirement that the cylinder 213 and the second motor 214 simultaneously operate, and the expansion and contraction speeds of the driven hollow tube 2121 and the screw 2122 are consistent, but also simplifies the control mode into the control button for facilitating the explanation of the operating principle, and the movable welding machine 21 in the invention can also be taken off from the placing desk 221, so that an operator directly holds and welds the pipeline body 4;

based on the above, when the welding rod fixture 2123 is connected to the power source and the welding rod is installed, the user can control the output end of the cylinder 213 to blow or draw out air flow into the hollow tube 2121 connected thereto through the control button, because the hollow tube 2121 is hollow and the hollow structure of the hollow tube 2121 extends to both ends of the hollow tube 2121 as shown in fig. 9, when the air pressure of the cylinder 213 is increased or decreased in the hollow tube 2121, the screw rod 2122 extends outwards and drives movement;

while the air cylinder 213 drives the screw rod 2122 to move in a telescopic way by increasing air pressure, the output shaft of the second motor 214 drives the screw rod 2122 to rotate at the same time, so that the screw rod 2122 and the welding rod clamp 2123 form screw rod transmission connection to drive the welding rod clamp 2123 to slide on the surface of the screw rod 2122, the two sides of the hollow tube 2121 are provided with sliding blocks 121a, the screw rod 2122 is internally provided with a second sliding groove 122a for the hollow tube 2121 to slide, the sliding blocks 121a are embedded into the second sliding groove 122a, and when the screw rod 2122 rotates, the sliding of the welding rod clamp 2123 is not influenced by limiting formed by the sliding blocks 121a and the second sliding groove 122a, therefore, synchronous driving of the welding rod clamp 2123 to move is formed, and when the welding device 2 performs welding work, the welding rod regularly and uniformly moves towards the pipeline body 4, so that the welding stability is improved, and the phenomenon of magnetic bias is avoided;

it should be noted that, in the present invention, the two driving rods are not necessarily formed by sleeving the lead screw 2122 outside the hollow tube 2121, only the hollow tube 2121 with a hollow structure is required to be connected to the output end of the air cylinder 213, the lead screw 2122 with threads is required to be connected to the output shaft of the second motor 214, and the hollow tube 2121 connected to the output end of the air cylinder 213 may be sleeved with the lead screw or be a telescopic rod, so that the connection between the air tightness of the hollow tube 2121 and the welding rod fixture 2123 is required only, that is, the welding rod fixture 2123 may be lifted outwards when the air pressure is increased, which is not limited.

Further, the welding rod fixture 2123 includes a clamping piece single body 123a, a threaded connection sliding tube 123b and a fixing rod 123c, the clamping piece single body 123a is arranged in an up-down symmetrical manner, the threaded connection sliding tube 123b is respectively arranged at the left end and the right end of the clamping piece single body 123a at the lower part, the threaded connection sliding tube 123b and the screw 2122 form a screw transmission to connect the two clamping piece single bodies 123a to form a fixture for clamping welding rods, one side of the fixture far away from the pipeline body 4 is in a flaring structure, a fixing rod 123c and a torsion spring 123d are arranged in the flaring structure, one end of the fixing rod 123c is fixed on the threaded connection sliding tube 123b, the torsion spring 123d is sleeved outside the fixing rod 123c, and the upper side surface and the lower side surface of the clamping piece single body 123a at the lower part are respectively provided with a first clamping groove 23a2 recessed inwards;

it can be seen that the welding rod clamp 2123 clamps the welding rod by the two clamping piece monomers 123a through the torsion spring 123d, when the welding rod is installed in the placing hole 23a1, the conducting wire connected with the conducting clamp can be clamped at the first clamping groove 23a2 to form electric connection, and when the welding rod abuts against the surface of the pipeline body 4, the conducting wire and the conducting block 3 form current positive and negative electrode conduction.

The foregoing description is only illustrative of the preferred embodiments of the present invention, and therefore should not be taken as limiting the scope of the invention, for all changes and modifications that come within the meaning and range of equivalency of the claims and specification are therefore intended to be embraced therein.

Claims (10)

1. The pipeline welding equipment for eliminating magnetic bias blowing is characterized by comprising a frame body, a welding device for welding a pipeline body and a conductive block, wherein the pipeline body is arranged on the frame body, the welding device and the conductive block are electrically connected with the pipeline body, and the welding device and the conductive block are respectively connected with the anode and the cathode of a power supply and form current conduction;

the rack body is provided with a conductive fixed wheel and a first motor, the conductive fixed wheel is symmetrically arranged on the surface of the rack body, the peripheral surface of the conductive fixed wheel is provided with a latch, the output shaft of the first motor is provided with a toothed bar, the toothed bar is meshed with the latch on the peripheral surface of the conductive fixed wheel, and the pipeline body is arranged in the conductive fixed wheel so as to drive the pipeline body to rotate at a constant speed through the first motor;

the conductive fixed wheel comprises an outer ring, an inner ring and conductive electric push rods, the outer ring is sleeved outside the inner ring, the conductive electric push rods are annularly arranged in the outer ring, output shafts of the conductive electric push rods extend towards dots of the outer ring through the inner ring, and output shafts of all the conductive electric push rods are propped against the surface of the pipeline body;

the support members are symmetrically arranged on the left side and the right side of the conductive fixed wheel, the side face of the outer ring is provided with an annular groove, and the surface of each support member is connected with an embedded block embedded into the annular groove.

2. The pipe welding device for eliminating magnetic blow-out according to claim 1, wherein the conductive block is connected to a side surface of the supporting member, and when the conductive block is connected to a power source, a current sequentially flows through the supporting member, the conductive fixing wheel and the conductive pipe body and forms a current anode-cathode conduction with the welding device abutting against the surface of the pipe body.

3. The pipe welding equipment for eliminating magnetic blow-out according to claim 1, wherein the conductive blocks are annularly arranged on the peripheral surface of the pipe body, all the conductive blocks are connected to a power supply and electrically connected with the pipe body, and form current positive and negative conduction with a welding device abutted against the surface of the pipe body.

4. A pipe welding apparatus for eliminating magnetic blow-out according to any one of claims 1 to 3, wherein the conductive block comprises a fixing case, a conductive member, and a magnet, the fixing case is mounted on the conductive member, a mounting groove is provided in the fixing case, and the magnet is mounted in the mounting groove;

the side surface of the conductive piece is provided with a first notch, the lower end of the conductive piece is provided with a second notch, and when the magnet is installed in the installation groove, the side surface of the magnet is respectively embedded into the first notch and the second notch;

the section of the conductive piece is L-shaped, and when the conductive block is connected with a power supply, current anode and cathode conduction is formed through the conductive piece and the welding device.

5. The pipe welding apparatus for eliminating magnetic blow-out according to claim 4, wherein a connecting portion for connecting a power source is provided on a side of the conductive member adjacent to the fixing case, and a corresponding opening is provided on a surface of the fixing case, the connecting portion extends into the opening, a gap is provided between the opening and a surface of the connecting portion, and the upper and lower sides of the connecting portion are provided with second clamping grooves recessed inward;

the edge of one side of the lower part of the conductive piece far away from the first notch is provided with a hook block, and the surface of the fixed shell is provided with a corresponding clamping groove, when the fixed shell is arranged on the conductive piece, the hook block is embedded into the clamping groove.

6. The welding device for eliminating magnetic blow-out of the pipeline according to claim 4, wherein the welding device comprises a movable welding machine, a sliding block and a wire rail, wherein a first sliding groove is arranged on the side surface of the wire rail, the sliding block is arranged on the first sliding groove in a sliding manner, two ends of the first sliding groove do not extend to two side ends of the wire rail, and a placing table for supporting the movable welding machine is arranged on the sliding block;

the surface of the placing table is provided with a groove which is concave inwards, and the movable welding machine is clamped in the groove.

7. The pipe welding equipment for eliminating magnetic blow-out according to claim 6, wherein the movable welding machine comprises a shell and a driving mechanism arranged in the shell, the driving mechanism comprises symmetrically arranged driving rods and welding rod clamps, and the welding rod clamps are sleeved outside the two driving rods and form screw transmission connection with the driving rods;

the welding rod fixture is provided with a welding rod, and when the welding rod fixture is externally connected with a power supply and the welding rod is propped against the surface of the pipeline body, the welding rod fixture and a conductive block of the externally connected power supply form current anode and cathode conduction.

8. The pipe welding equipment for eliminating magnetic blow-out according to claim 7, wherein the two driving rods comprise a hollow pipe and a screw rod, and the screw rod is sleeved outside the hollow pipe;

the movable welding machine further comprises an air cylinder and a second motor, wherein one driving rod is communicated with the output end of the air cylinder through a hollow pipe, and the other driving rod is connected with the output shaft of the second motor through the hollow pipe;

the two sides of the hollow tube are provided with sliding blocks, the screw rod is internally provided with a second sliding groove for the hollow tube to slide, and the sliding blocks are embedded into the second sliding groove.

9. The pipe welding equipment for eliminating magnetic blow-out according to claim 8, wherein the welding rod clamp comprises a clamping piece monomer, a threaded connection sliding pipe and a fixed rod, wherein the clamping piece monomer is arranged in an up-down symmetrical mode, and the threaded connection sliding pipe is respectively arranged at the left end and the right end of the clamping piece monomer positioned at the lower part;

two clamping piece monomers constitute the anchor clamps that are used for the clamping welding rod, and the anchor clamps are flaring form structure in keeping away from one side of pipeline body, and are provided with dead lever and torsional spring in the flaring form structure, the one end of dead lever is fixed on threaded connection sliding tube, and the torsional spring is then overlapped and is established outside the dead lever.

10. The pipe welding apparatus for eliminating magnetic blow-out according to claim 9, wherein the upper and lower side surfaces of the clip unit at the lower portion each have a first clip groove recessed inward.