CN212552188U

CN212552188U - Be used for pipeline inside lining stainless steel automatic welder

Info

Publication number: CN212552188U
Application number: CN202020481501.7U
Authority: CN
Inventors: 刘东升; 马聪; 邵霞; 费立凯; 王玉强; 苏晓迪
Original assignee: Shandong Kelinruier Pipeline Engineering Co ltd
Current assignee: Shandong Kelinruier Pipeline Engineering Co ltd
Priority date: 2020-04-06
Filing date: 2020-04-06
Publication date: 2021-02-19
Anticipated expiration: 2030-04-06

Abstract

An automatic welding device for pipeline lining stainless steel mainly comprises a welding gun system (4), a walking mechanism (5), telescopic legs (2) and a transmission box (3) welding wire feeding mechanism (6), wherein walking power is provided by a speed reducing motor (1) installed on the transmission box (3), and a bevel gear of the transmission box (3) decomposes the power into two parts which are transmitted to the walking mechanism (5) through the telescopic legs (2). Compression spring (2.2) in flexible leg (2) makes walking wheel (5.1) and inside liner (7) have normal pressure, if the pipe diameter changes in the welding, flexible leg (2) also follows the change. The telescopic legs (2) are fixed with the transfer box (3) in a hinge mode, so that the telescopic legs (2) are folded, the size of the device is reduced, and the device is convenient to carry in a pipeline. The utility model discloses an use different welding source to realize having improved welding quality and speed to lining welding such as stainless steel, carbon steel.

Description

Be used for pipeline inside lining stainless steel automatic welder

Technical Field

The utility model relates to a welding set, especially a be used for pipeline inside lining stainless steel automatic welder.

Background

At present, various lining pipeline technologies are developed in the pipeline industry at home and abroad, the service life of a new pipeline is prolonged by several times by adding a wear-resistant and corrosion-resistant lining on the inner surface of the pipeline, the pipeline is also attractive and new after the lining construction repair of old pipelines running for many years, some scrapped old pipelines can be reused after the lining repair, and the pipeline lining technology brings considerable social and economic benefits to the whole pipeline industry. One of the lining techniques is often used in pipeline rehabilitation, which is to line a stainless steel lining on the inner surface of a pipeline, and the diameter of the lining pipeline is 0.5 m at the minimum and 4 m at the maximum, and the lining technique has a wide application range. The concrete construction method comprises the following steps: 1. cleaning the inner surface of the pipeline needing to be lined; 2. pressing the single stainless steel plate into an arc shape according to the inner arc diameter of the original pipeline; 3. rolling the stainless steel plate pressed into an arc shape into a cylinder shape, bundling the stainless steel plate and then sending the stainless steel plate into a pipeline; 4. opening the winding drum and spreading after the pipeline is in place, and performing spot welding and fixing on all the unfolded stainless steel plates to form a complete lining layer in the pipeline; 5. after being spread and fixed in a large area, welding personnel integrally weld all butt welding seams; 6. after the welding seams of the pipeline inner liner are completely welded, the two ends of the plugging pipeline are subjected to hydrostatic test, the pipeline can smoothly pass through the pipeline if no leakage occurs after the testing pressure is reached, all welding points need to be checked to repair welding points with problems found out if leakage occurs in pressure testing, and the pressure testing is repeatedly carried out after the welding points are repaired until no leakage point exists. The welding of the stainless steel lining plate is the key of the whole construction, and a welder with good welding technology must be commissioned to obtain qualified welding quality, but the good technology is possessed, and the physical strength, construction environment and mental state of the welder can influence the welding quality. When the pipeline is welded in a pipeline which is small in space and not easy to expand, the physical force consumption of a welding tool is large, smoke dust and dust generated by welding are not easy to remove, the construction environment is severe due to the fact that breathing is difficult, in addition, the relative distance of pipeline construction in the field is long, and more than hundreds of meters is few, and more than kilometers is few. Therefore, the welding one-time qualification rate is very low, so that the construction period is prolonged, and the construction cost is increased. According to the situation, in order to increase the first-time qualified rate of welding speed, some enterprises change a complete manual welding operation mode into manual semi-automatic welding gun operation of a welder, so that the progress can be improved under certain conditions, but the requirements on the overall technical operation level of the welder and the physical consumption of the welder cannot be reduced. In addition, according to various types of automatic welding trolleys appearing in the pipeline welding industry at present, the automatic welding trolleys can not be applied to the pipeline stainless steel lining technology basically, the reason is that the welding trolleys can only be welded and run by rails, the trolley rails can only be laid at the positions of circumferential welds, the positions of the circumferential welds are better laid in a whole circle, the transverse weld welding rails which are not fixed in position can not be laid basically, the transverse welds have no fixed positions, even if the rails are laid by a method, the welding trolleys cannot be fixedly operated and used on the rails (some transverse welds are positioned at twelve points), and the automatic welding trolleys are more difficult to apply to small-pipe-diameter linings with narrow spaces. There is also a magnetic wheel welding carriage that does not require a rail, which is not found in stainless steel, which may be used (essentially absent) in liners using carbon steel plates as the lining material for the pipe. How to liberate welders from a hard labor environment and improve the welding quality and the welding speed is a difficult problem to be faced by each stainless steel pipeline lining project, so a set of welding device capable of meeting the requirements is developed, and the stainless steel lining pipeline project is enabled to reduce the dependence on professional welders so as to be imperative.

Disclosure of Invention

According to above technical background, the utility model discloses a concrete solution that the difficult problem that produces in just solving this stainless steel pipeline inside lining construction proposed, the utility model aims to provide an equipment suitable for carry out automatic weld operation at the inside lining corrosion resistant plate of pipeline, it can be walked again and can undertake the welding of the ring weld that produces by the stainless steel material of intraductal inside lining and the horizontal welding seam of all positions, can not need too professional welding technique, and simple training can operate, improves welding quality and welding speed, alleviates welding intensity of labour to the welding construction of applicable multiple specification pipeline.

In order to achieve the purpose, the utility model discloses a realize through following technical scheme:

an automatic welding device for pipeline lining stainless steel mainly comprises a walking mechanism, a telescopic leg, a transfer box, a welding wire feeding mechanism of a welding gun system and the like; the transmission box is provided with a speed reducing motor, power generated by the speed reducing motor is transmitted to a central shaft arranged in the telescopic leg through a bevel gear set in the transmission box, bevel gears are respectively arranged at two ends of the central shaft and are meshed with the bevel gear at the other end to transmit the power to an upper walking wheel and a lower walking wheel, and the walking wheels are contacted with lining materials of pipe walls. The telescopic leg is provided with a welding gun system, the welding gun system is provided with an adjusting screw rod, and the adjusting screw rod can enable the welding gun to move up and down and left and right, so that the welding wire can be adjusted in the welding process. The transfer box is hinged with the telescopic legs through hinges on one side, and the other side of the transfer box is fixed through a lock handle. The telescopic leg comprises a compression spring, a central shaft and the like, the telescopic leg is divided into an outer leg and an inner leg, the outer leg and the inner leg are mutually sleeved, the compression spring is arranged in the telescopic leg, and the compression spring reversely supports the inner leg and the outer leg. The central shaft consists of an inner shaft and an outer shaft, the outer shaft is hollow, notches are formed in two sides of the outer shaft, the inner shaft is a solid shaft and is connected with the outer shaft through a penetrating pin, and the penetrating pin can slide in the notches of the outer shaft. The running mechanism is formed by meshing a bevel gear arranged at one end of an inner shaft with a bevel gear arranged on a running wheel shaft, and the rotating direction of the running wheel can be changed by changing the mounting direction of a shell of the running mechanism (rotating the shell by 180 degrees) by changing the mounting position of the bevel gear on the running wheel shaft so as to achieve the welding running direction of welding seams (circumferential welding seams and transverse welding seams) at different positions.

The utility model has the advantages that: accomplish fixed back at pipeline stainless steel inner liner, welding construction personnel are through carrying the utility model discloses a welding set and during the welding source who buys outward get into the inside lining pipeline, expand the utility model discloses welding set's upper and lower leg that stretches out and draws back, the position of welder and welding seam on the welding set has been adjusted, it just can carry out welding operation to connect welding source, in using this welding set welding, operating personnel only need notice observe the welding wire with the centering of welding seam and in time adjust the lead screw on the welder system can, need not too much to intervene this welding set, the welding operation process of whole welding seam just can be accomplished to one person, and welding quality is not disturbed by the human factor moreover, and welding speed is fast (this welding set welding speed is five to ten times of manual welding speed). The accessible is opened the lock handle and is leaned on the articulated hinge of flexible leg and fold flexible leg when need remove this welding set after the welding, and this welding set volume after folding can reduce half, is convenient for carry in narrow and small pipeline space. The utility model discloses a welding set can be at the welding on pipeline inside lining stainless steel layers such as all kinds of concrete pipes, steel pipes more than 500 millimeters in diameter, the utility model discloses simplify the weldment work that needs the pipeline stainless steel inner liner that professional welder could accomplish into the simple technique that only needs to master certain operating skill just can accomplish inside lining welding operation, make pipeline stainless steel inner liner welded intensity of labour big, the drawback that technical requirement is high can be improved, therefore also make the inside lining technique range of application that utilizes the stainless steel to do the inside liner pipeline further enlarge, have apparent economic benefits.

Drawings

FIG. 1 is a schematic view of the position of the girth weld on the pipe liner (7) of this embodiment.

Fig. 2 is an external view of the transfer case (3).

FIG. 3 is a layout of the transmission in the case of FIG. 2.

Fig. 4 is a partial sectional view of the telescoping leg (2).

Fig. 5 is a detailed view of the welding gun system (4).

FIG. 6 is an internal view of the traveling mechanism 5.

Fig. 7 is a display view of the welding device after being folded.

Detailed Description

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As can be seen from figure 1, the embodiment of the utility model comprises a traveling mechanism (5), flexible leg (2), transmission case (3), welding gun system (4) welding wire feed mechanism (6) etc., the bevel gear set of transmission case (3) transmits the power that the motor produced to center pin (2.3) in flexible leg (2), the bevel gear is respectively installed at center pin (2.3) both ends and is passed through the bevel gear with the other end and mesh in the traveling mechanism (5) of power transmission upper portion and lower part, also install a bevel gear and mesh in the casing of traveling mechanism (5). A walking wheel (5.1) which is coaxial with the bevel gear is in contact with the pipe wall, and a certain force is applied through a spring (2.2) arranged in the telescopic leg (2) to ensure that the walking wheel is in good contact with the pipe wall. The telescopic leg (2) is provided with a welding gun system (4) near the walking wheel (5.1), the welding gun system (4) is provided with an adjusting screw rod (4.3), and the adjusting screw rod (4.3) is rotated to enable the welding gun (4.1) to move up and down and left and right, so that the welding wire (4.6) and a welding seam can be centered all the time in the welding process. The power transmitted by the speed reducer shaft is transmitted to the bevel gears (3.5) which are correspondingly arranged at two sides through the bevel gears (3.4) arranged on the speed reducer shaft, the bevel gears (3.5) which are correspondingly arranged at two sides are respectively arranged at one end of an outer shaft (2.7) of a central shaft (2.3) in the telescopic legs (2) at the upper part and the lower part, and the bevel gears (3.5) at two sides which are meshed after the telescopic legs (2) are folded are automatically separated from the bevel gears (3.4) on the speed reducer, so that the function of the telescopic legs (2) is realized. Fig. 4 is an internal structure diagram of a single-side telescopic leg (2), it can be seen from the diagram that the telescopic leg (2) is divided into an inner leg (2.5) and an outer leg (2.1), the outer leg (2.1) is sleeved on the inner leg (2.5), a telescopic central shaft (2.3) is installed at the center position of the telescopic leg (2), the central shaft (2.3) is also formed by sleeving an inner shaft and an outer shaft together, a long notch is formed on the outer shaft (2.7), the inner shaft (2.6) penetrates into the outer shaft (2.7), a pin shaft (2.4) installed on the inner shaft (2.6) slides in the notch of the outer shaft (2.7) and transmits power, bevel gears are respectively installed on the outer shaft (2.7) and the inner shaft (2.6) also changes simultaneously when the telescopic leg (2) has telescopic change, and when the outer shaft (2.7) rotates, the inner shaft (2.6) and the outer shaft (2.7) change in linkage through the pin shaft (2.4) of the inner shaft and the outer shaft (2.7). The outer shaft (2.7) is externally sleeved with a compression spring (2.2), and the compression spring pushes the compression force reversely to support the inner leg and the outer leg so as to ensure the sufficient pressure of the walking wheel (5.1) and the stainless steel inner liner layer and ensure the walking stability of the walking wheel. Fig. 5 shows a welding gun system (4), wherein the welding gun positioning system is installed on one side of an inner leg (2.5) of a telescopic leg (2), and can change along with the inner leg, when the inner diameter of a pipeline changes, the inner leg (2.5) changes along with the change of the pipe diameter, the welding gun system (4) also changes along with the inner leg (2.5), and the effective distance between a welding gun (5.1) and an inner liner is ensured. The welding gun is an accessory supplied by a supplier together with a welding power supply, the welding gun is fixed on a welding gun seat (4.7) through a pressing block (4.2), and if a welding wire deviates from a welding seam in the welding process, the welding gun is adjusted through manually rotating a hand wheel (4.4) on an adjusting screw rod (4.3). Fig. 6 is an internal view of the walking mechanism, and it can be seen from the figure that a bevel gear at one end of an inner shaft (2.6) on the telescopic leg (2) is meshed with a bevel gear (5.4) on a walking wheel shaft (5.2), so that the wheel shaft (5.2) is driven to rotate, the purpose of welding and walking of the device is achieved, and the speed of welding is adjusted by adjusting the rotating speed of a motor, so that the device is suitable for welding of stainless steel lining layers with different thicknesses. In the welding stainless steel inner liner, the direction of rotation of circumferential weld and horizontal weld walking wheel is inconsistent, the utility model discloses welding set is about to running gear (5) to pull down by inner leg (2.5) through changing the running gear direction, and the realization is assembled to the direction of change (the rotatory 180 degrees of shell).

The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the improvement concept of the present invention within the technical scope disclosed in the present invention.

Claims

1. An automatic welding device for pipeline lining stainless steel mainly comprises a walking mechanism (5); a telescopic leg (2); a transfer box (3); a welding gun system (4); the welding wire feeding mechanism (6) is characterized in that: install gear motor (1) on transmission case (3), on center pin (2.3) of installation in flexible leg (2) are transmitted the power that gear motor (1) produced through the bevel gear group in transmission case (3), the bevel gear is respectively installed at center pin (2.3) both ends, through meshing mutually with the bevel gear of the other end power transmission for running gear (5), rubber tyer (5.1) on running gear (5) and pipeline inner liner contact, welder system (4) are installed to one side of flexible leg (2), install horizontal and vertical adjusting screw (4.3) on welder system (4), keep welder (4.1) and the centering of welding seam.

2. The automatic welding device for the stainless steel lining of the pipeline according to claim 1, wherein: the hinged hinge (3.3) on the transfer box (3) is connected with one side of the telescopic leg (2), the other side is fixed by the lock handle (3.1), the lock handle (3.1) can be opened when the welding device folds the telescopic leg (2), and the prop-up telescopic leg (2) can be fixed by the lock handle (3.1).

3. The automatic welding device for the stainless steel lining of the pipeline according to claim 1, wherein: the telescopic leg (2) is composed of a compression spring (2.2); the central shaft (2.3) is composed, the telescopic leg (2) is divided into an outer leg (2.1) and an inner leg (2.5), the outer leg (2.1) and the inner leg (2.5) are mutually sleeved, the compression spring (2.2) is installed in the telescopic leg (2), one end of the compression spring (2.2) is connected with the outer leg (2.1), and the other end is connected with the inner leg (2.5) and is reversely supported.

4. The automatic welding device for the stainless steel lining of the pipeline according to claim 3, wherein: the central shaft (2.3) consists of an inner shaft (2.6) and an outer shaft (2.7), the outer shaft (2.7) is hollow, notches are formed in two sides of the outer shaft, the inner shaft (2.6) is a solid shaft and is connected with the outer shaft (2.7) through a through pin (2.4), and the through pin (2.4) can slide in the notch formed in the outer shaft (2.7).

5. The automatic welding device for the stainless steel lining of the pipeline according to claim 1, wherein: the running mechanism (5) is formed by meshing a bevel gear (5.3) arranged at one end of an inner shaft (2.6) with a bevel gear (5.4) arranged on a running wheel shaft, and the rotating direction of the running wheel is changed by changing the positions of the bevel gears (5.4) on the running wheel shaft (5.2) and changing the arrangement of the running mechanism (5) and the telescopic legs (2) so as to achieve the welding running direction of welding seams at different positions.