Round pipe transportation butt joint device and method

Abstract

The application discloses a circular pipe transportation butt joint device, which comprises a base, liftable moving wheels, liftable columns, bidirectional screws, clamping arc-shaped pieces, height vertical rods, horizontal rotating rods, liftable leveling supporting legs installed at four corners of the base, a rotating hand wheel installed at one end of the bidirectional screw, a movable block installed between the clamping arc-shaped piece and the bidirectional screw, supporting ear rings installed at left and right outer sides of the clamping arc-shaped piece, and binding ropes, a laser emitter installed at one end of the horizontal rotating rod away from the height vertical rod, and a laser receiving plate installed at the back of the laser emitter. The application also discloses a circular pipe transportation butt joint method, which comprises the following steps: step S1, using a plurality of circular pipe transportation butt joint devices as described above; step S2, leveling the base; and step S3, adjusting the pitch angle of the pipe, and then butt welding. The application has the characteristics of safe pipe transportation, high work efficiency, time and labor saving, high welding quality and step simplification.

Description

Technical Field

[0001] This invention relates to the field of pipe transportation and docking technology, specifically to a circular pipe transportation and docking device and method. Background Technology

[0002] Traditional transportation, securing, and installation of round pipes are mostly completed manually with simple tooling: in the loading area, workers lift the pipes onto wheelbarrows, hand-pulled flatbed carts, or simple mounting brackets, where they are temporarily secured using these simple structures. Then, workers push / pull the vehicles to the unloading area. This process is cumbersome, relying entirely on manual labor for clamping, lifting, aligning, and unloading the pipes. Furthermore, the transport site is often uneven, consisting of gravel layers, making manual pushing and pulling time-consuming, labor-intensive, and prone to bumps. This results in unstable pipe installations and safety hazards. The operation is even more difficult and dangerous when encountering uphill terrain.

[0003] When welding pipes together on the construction site, in order to ensure the quality of the weld, it is necessary to strictly control the misalignment of the two pipe joints, that is, the difference in elevation between the centers of the two pipes. Current practices generally rely on leveling instruments and leveling rods for measurement and alignment, which has the following drawbacks: 1) The leveling instruments, leveling rods, tripods, and other equipment are bulky and cumbersome to set up. Moreover, construction sites are often characterized by gravel, soil, or uneven ground, making it difficult to stably set up the leveling instrument. The measurement benchmark is easily constrained by site conditions. The use of the equipment usually requires two workers to cooperate, one to operate the leveling instrument and the other to stand above the pipe with the leveling rod, communicating and taking readings repeatedly via walkie-talkie. This results in high communication costs and difficulty in coordination. The alignment process is repetitive and lengthy: 2) Measurement → Reading → Calculating the height difference → Adjusting the jacks or wooden blocks → Re-measurement → Re-adjustment. A single weld joint often requires 3-5 repetitions to control the misalignment within the allowable range. A single alignment takes 30-60 minutes, which seriously restricts the efficiency of welding construction. 3) After two leveling instruments are used for measurement or the same leveling instrument is moved, the benchmark is easily lost. Furthermore, if the bases of the two fixed devices are not coplanar, the elevation values ​​of their independent readings are not directly comparable and must rely on an external unified benchmark.

[0004] After alignment, manual support is required for connection. When the pipe specifications are DN80 and DN100, it is relatively easy to operate. When steel pipes are used, the weight is 50kg-60kg, and manual assistance can be used for lifting and other operations. However, when the pipe specifications are DN200 and DN250, the weight of steel pipes is as high as 300kg-400kg. It is difficult to lift by manpower alone. A crane is required for lifting, and multiple workers are needed to assist in connection. This results in low construction efficiency, high labor intensity, and long operation cycle. Summary of the Invention

[0005] This invention aims to provide a circular pipe transportation and docking device that facilitates pipe transportation and achieves high docking accuracy. It solves the problems of current methods such as using wheelbarrows, hand-pulled flatbed carts, or simple fixed brackets for transportation, which are time-consuming, labor-intensive, and pose safety hazards due to unstable pipe installation. It also addresses the issues of relying on levels and leveling rods for measurement and alignment, which require manual assistance for docking, resulting in low construction efficiency, high labor intensity, and long operation cycles.

[0006] Therefore, the technical solution adopted by this invention is as follows: a circular pipe transport and docking device, comprising a base, liftable movable wheels installed below the base, two liftable columns spaced apart on the top of the base, a bidirectional lead screw horizontally installed between the two liftable columns, a mirror-symmetrical and detachable clamping arc-shaped piece installed at different helical ends of the bidirectional lead screw, a height vertical rod installed on the base, a horizontal rotating rod movably installed on the height vertical rod, liftable leveling legs installed at the four corners of the base, and a lifting drive at the bottom of the liftable columns, thereby enabling the overall lifting of the bidirectional lead screw and the clamping arc-shaped piece. One end is equipped with a rotating handwheel. A movable block is installed between the clamping arc-shaped piece and the bidirectional screw. Support ear rings are installed on the left and right outer sides of the clamping arc-shaped piece, and a binding rope is provided. When the handwheel is manually turned, the bidirectional screw rotates, causing the movable block to move the clamping arc-shaped pieces closer together to form a semi-circular groove structure that clamps the lower part of the pipe. The pipe can be bound and fixed in the semi-circular groove structure by passing the binding rope around the top of the pipe. The horizontal rotating rod and the base are both equipped with bubble tubes to monitor the levelness. A laser emitter is installed at the end of the horizontal rotating rod away from the vertical rod. A laser receiving plate is installed on the back of the laser emitter.

[0007] As a preferred embodiment of the above solution, the liftable movable wheels are installed at the four corners of the movable frame, and a lifting drive is installed between the center of the movable frame and the base. The lifting drive can lift the movable frame to realize the lifting of the liftable movable wheels, which facilitates the overall synchronous lifting of the liftable movable wheels and has a reasonable structural design.

[0008] A further preferred embodiment is that the liftable leveling outrigger is equipped with a third lifting drive, wherein the first, second, and third lifting drives all employ hydraulic jacks, resulting in a reasonable structure.

[0009] Preferably, two movable blocks are used to correspond to one clamping arc-shaped piece, and the lower part of the movable block is threaded with a bidirectional lead screw, while the upper part has an insertion port. The bottom of the clamping arc-shaped piece is provided with an installation rod for inserting into the insertion port of the movable block, thereby realizing flexible replacement of clamping arc-shaped pieces of different specifications. The structure is reasonably designed, and when it is necessary to replace the clamping arc-shaped piece, it can be directly pulled out for replacement, making the operation simple and convenient.

[0010] Further preferably, the front and rear bottom sides of the clamping arc-shaped piece are provided with guide blocks and are equipped with guide rods passing through the guide blocks to ensure that the clamping arc-shaped pieces move towards each other. The concave surface of the clamping arc-shaped piece is equipped with a buffer pad to prevent the clamping arc-shaped piece from directly contacting the pipe during clamping. The structure design is reasonable.

[0011] Further preferably, the bidirectional lead screw is equipped with a torque limiter to effectively prevent excessive torsion from causing the clamping arc-shaped pieces to squeeze and collide with each other.

[0012] More preferably, the horizontal rotating rod is mounted on the height vertical rod via a movable sleeve. The height vertical rod is provided with positioning holes spaced apart vertically. The movable sleeve is provided with a pin through hole and equipped with a positioning pin. When the horizontal rotating rod is rotated to be perpendicular to the pipe axis, the horizontal rotating rod can be fixed by the positioning pin. The height vertical rod is provided with scales on the top and bottom to facilitate the determination of the height of the horizontal rotating rod and to facilitate all horizontal rotating rods to rise to the same height for fixing.

[0013] This invention also employs a method for transporting and connecting circular pipes, comprising the following steps:

[0014] Step S1: Use several circular pipe transport docking devices as described above, install them at intervals to support and bind the front and rear sections of pipe, and then move the pipe to the designed docking position by manual pushing or pulling vehicle.

[0015] Step S2: Unify and retract the lifting and moving wheels, then use the lifting and leveling support legs in conjunction with the bubble tube on the base to level the base, move the horizontal rotating rod placed on the base to the top of the pipe, and rotate it to be perpendicular to the central axis of the pipe.

[0016] Step S3: Activate all laser emitters and adjust the height of the liftable column of the next circular pipe transport docking device by observing the laser path, thereby adjusting the pitch angle of the pipe so that the laser receiving plate of the next circular pipe transport docking device can receive the laser, ensuring that the two pipe sections have the same direction, and then weld them together.

[0017] As a preferred option of the above scheme, the pipes are available in DN80, DN100, DN200, and DN250 sizes, with a length of 6m, and are made of steel or rigid polyvinyl chloride, which is a reasonable selection.

[0018] The beneficial effects of this invention are:

[0019] (1) Compared with the use of wheelbarrows, hand-pulled flatbed carts or simple fixed brackets for transportation, this application uses multiple spaced circular pipe transportation docking devices to lift and tie the pipes, and then transport them by lifting and moving wheels. If the pipes are small and light, they can be manually pushed. If the pipes are heavy or on an uphill slope, they can be pulled by a tractor. The transportation is flexible. The clamping arc plate can clamp the lower half of the pipe and is tied with binding rope to ensure the safety of pipe transportation. If the pipes are light, the distance is short and the road conditions are good, binding rope can be omitted to reduce the process. Pipe transportation is time-saving and labor-saving.

[0020] (2) After transportation, the laser transmitter can be used to achieve the alignment function. The transportation alignment function is integrated, which reduces equipment cost, reduces labor cost, and greatly increases work efficiency. Compared with relying on level instrument + leveling rod for measurement and alignment, when the laser emitted by the laser transmitter is received by the laser receiving plate of the next circular pipe transportation docking device, it means that the center axis of the two pipes to be docked is within the error range and meets the requirements, effectively ensuring welding quality. It can be flexibly adjusted according to the laser path, without too much communication. The steps are simplified, the concept is novel, and the design is ingenious.

[0021] (3) One operator can observe the laser path and adjust the adjustable column to adjust the pitch angle of the pipe so that the laser receiving plate of the next circular pipe transport docking device can receive the laser. This eliminates the need for two people to cooperate and communicate via walkie-talkie, reducing labor costs by more than 50% and shortening the alignment time from 30-60 minutes / crossing in the traditional method to 3-5 minutes / crossing.

[0022] In summary, this invention features safe pipe transportation, high work efficiency, time and labor saving, high welding quality, and simplified procedures. Attached Figure Description

[0023] Figure 1 This is a front view of the present invention.

[0024] Figure 2 for Figure 1 The side view shows the retractable movable wheels retracting and the adjustable leveling outriggers lowering.

[0025] Figure 3 for Figure 2 Top view. Detailed Implementation

[0026] The present invention will be further described below with reference to the embodiments and accompanying drawings:

[0027] Combination Figure 1 — Figure 3As shown, a circular pipe transport docking device consists of a base 1, liftable movable wheels 2 installed below the base 1, two liftable columns 3 installed at left and right intervals above the base 1, a bidirectional screw 4 horizontally installed between the two liftable columns 3, a clamping arc-shaped piece 5 symmetrically and detachably installed at different rotation ends of the bidirectional screw 4, a height vertical rod 6 installed on the base 1, and a horizontal rotating rod 7 movably installed on the height vertical rod 6.

[0028] The base 1 has adjustable support legs 11 installed at its four corners. The bottom of the adjustable column 3 is equipped with a lifting drive 31, which can lift the bidirectional lead screw 4 and the clamping arc plate 5 as a whole. A rotating handwheel 41 is installed at one end of the bidirectional lead screw 4. A movable block 42 is installed between the clamping arc plate 5 and the bidirectional lead screw 4. Support ear rings are installed on the left and right outer sides of the clamping arc plate 5 and a binding rope is provided. When the rotating handwheel 41 is turned manually, the bidirectional lead screw 4 rotates, causing the movable block 42 to drive the clamping arc plate 5 to move closer together and form a semi-arc groove structure that clamps the lower part of the pipe 8. The pipe 8 can be bound and fixed in the semi-arc groove structure by the binding rope passing around the top of the pipe 8. Both the horizontal rotating rod 7 and the base 1 are equipped with bubble tubes for monitoring the levelness. A laser emitter 71 is installed at the end of the horizontal rotating rod 7 away from the height vertical rod 6. A laser receiving plate is installed on the back of the laser emitter 71.

[0029] The liftable casters 2 are installed at the four corners of the mobile frame 21. A lifting drive 22 is installed between the center of the mobile frame 21 and the base 1. The lifting drive 22 can lift the mobile frame 21, thereby realizing the lifting of the liftable casters 2.

[0030] The adjustable leveling outrigger 11 is equipped with a third lifting drive, and the first lifting drive 22, the second lifting drive 31, and the third lifting drive all use hydraulic jacks.

[0031] Two movable blocks 42 are used to correspond to one clamping arc plate 5. The lower part of the movable block 42 is threaded into the bidirectional lead screw 4, and the upper part has a socket. The bottom of the clamping arc plate 5 is provided with an installation rod for inserting into the socket of the movable block 42, so as to realize the flexible replacement of clamping arc plates 5 of different specifications.

[0032] The front and rear bottom sides of the clamping arc plate 5 are provided with guide blocks 51 and are equipped with guide rods 52 passing through the guide blocks 51. The concave surface of the clamping arc plate 5 is fitted with a buffer pad 53.

[0033] The bidirectional lead screw 4 is equipped with a torque limiter, which mechanically binds the pipe diameter parameters with the clamp opening amount and the upper limit of torque, enabling rapid changeover for multi-specification mixed-line production.

[0034] The horizontal rotating rod 7 is installed on the height vertical rod 6 through a movable sleeve. The height vertical rod 6 has positioning holes spaced at intervals on the top and bottom. The movable sleeve has a pin through hole and is equipped with a positioning pin. When the horizontal rotating rod 7 is rotated to be perpendicular to the axis of the pipe 8, the horizontal rotating rod 7 can be fixed by the positioning pin. The height vertical rod 6 has scales on the top and bottom to facilitate the determination of the height of the horizontal rotating rod 7.

[0035] A method for transporting and connecting circular pipes, the specific implementation steps of which are as follows:

[0036] Step S1: Use several circular pipe transport docking devices as described above, install them at intervals to support and bind the two sections of pipe 8, and then move the pipe 8 to the designed docking position by manual pushing or pulling vehicle.

[0037] When the pipe size is DN80 or DN100, manual pushing is used; when the pipe size is DN200 or DN250 and / or when going uphill, a tractor is used for pulling.

[0038] Step S2: Unify and retract the lifting and movable wheels 2, and then use the lifting and leveling support legs 11 in conjunction with the bubble tube on the base 1 to level the base 1. Move the horizontal rotating rod 7 placed on the base 1 upwards to above the pipe 8 and rotate it to be perpendicular to the central axis of the pipe 8.

[0039] Step S3: Activate all laser emitters 71, and adjust the height of the liftable column 3 of the next circular pipe transport docking device by observing the laser path, thereby adjusting the pitch angle of the pipe 8 so that the laser receiving plate of the next circular pipe transport docking device can receive the laser, ensuring that the two pipe sections 8 have the same direction, and then dock and weld them.

[0040] It can directly measure and transmit the center elevation of pipes without relying on external level instruments. It achieves single-person operation and rapid leveling by emitting a horizontal laser through one device and receiving the light spot through another device, and is not limited by whether the bases of the two devices are coplanar.

[0041] The specifications of pipe 8 are DN80, DN100, DN200 and DN250, with a preferred length of 6m, and the preferred material is steel or rigid polyvinyl chloride.

Claims

1. A circular pipe transport and docking device, characterized in that: The system includes a base (1), liftable casters (2) mounted below the base (1), two liftable columns (3) mounted on the base (1) with a left-right interval, a bidirectional lead screw (4) horizontally mounted between the two liftable columns (3), a mirror-symmetrical and detachable clamping arc-shaped piece (5) mounted on different rotation directions of the bidirectional lead screw (4), a height vertical rod (6) mounted on the base (1), and a horizontal rotating rod (7) movably mounted on the height vertical rod (6). The base (1) has liftable leveling legs (11) mounted at its four corners. The bottom of the liftable column (3) is provided with a lifting drive (31), which can lift the bidirectional lead screw (4) and the clamping arc-shaped piece (5) as a whole. A rotating handwheel (41) is mounted on one end of the bidirectional lead screw (4). A movable block (42) is installed between the clamping arc plate (5) and the bidirectional screw (4). The clamping arc plate (5) is equipped with a support ear on the left and right sides and a binding rope. When the handwheel (41) is manually turned, the bidirectional screw (4) is rotated, causing the movable block (42) to drive the clamping arc plate (5) to move closer to each other and close together, forming a semi-arc groove structure that clamps the lower part of the pipe (8). The pipe (8) can be bound and fixed in the semi-arc groove structure by the binding rope passing around the top of the pipe (8). The horizontal rotating rod (7) and the base (1) are both equipped with bubble tubes for monitoring the levelness. A laser emitter (71) is installed at the end of the horizontal rotating rod (7) away from the height vertical rod (6). A laser receiving plate is installed on the back of the laser emitter (71).

2. The circular pipe transport and docking device according to claim 1, characterized in that: The liftable wheels (2) are installed at the four corners of the mobile frame (21). A lifting drive (22) is installed between the center of the mobile frame (21) and the base (1), and the lifting drive (22) can lift the mobile frame (21) to realize the lifting of the liftable wheels (2).

3. The circular pipe transport and docking device according to claim 1, characterized in that: The adjustable leveling outrigger (11) is equipped with a third lifting drive, and the first lifting drive (22), the second lifting drive (31), and the third lifting drive all use hydraulic jacks.

4. The circular pipe transport and docking device according to claim 1, characterized in that: The movable block (42) corresponds to one clamping arc plate (5) and two are used. The lower part of the movable block (42) is threaded into the bidirectional lead screw (4) and the upper part has a socket. The bottom of the clamping arc plate (5) is provided with an installation rod for inserting into the socket of the movable block (42), so as to realize the flexible replacement of clamping arc plates (5) of different specifications.

5. A circular pipe transport and docking device according to claim 1, characterized in that: The front and rear bottom sides of the clamping arc plate (5) are provided with guide blocks (51) and are equipped with guide rods (52) passing through the guide blocks (51). The concave surface of the clamping arc plate (5) is provided with buffer pads (53).

6. A circular pipe transport and docking device according to claim 1, characterized in that: The bidirectional lead screw (4) is equipped with a torque limiter.

7. A circular pipe transport and docking device according to claim 1, characterized in that: The horizontal rotating rod (7) is installed on the vertical height rod (6) through a movable sleeve. The vertical height rod (6) is provided with positioning holes at intervals on the upper and lower sides. The movable sleeve is provided with a pin through hole and equipped with a positioning pin. When the horizontal rotating rod (7) is rotated to be perpendicular to the axis of the pipe (8), the horizontal rotating rod (7) can be fixed by the positioning pin. The vertical height rod (6) is provided with scales on the upper and lower sides to facilitate the determination of the height of the horizontal rotating rod (7).

8. A method for transporting and connecting circular pipes, characterized in that, Includes the following steps: Step S1: Using several circular pipe transport docking devices as described in any of claims 1-7, install them at intervals to lift and bind the two sections of pipe (8) respectively, and then move the pipe (8) to the designed docking position by manual pushing or pulling vehicle. Step S2: Unify the retraction of the movable wheels (2), and then use the adjustable leveling legs (11) to adjust the base (1) by combining the bubble tube on the base (1). Move the horizontal rotating rod (7) placed on the base (1) to the top of the pipe (8) and rotate it to be perpendicular to the central axis of the pipe (8). Step S3: Start all laser emitters (71) and adjust the height of the liftable column (3) of the next circular pipe transport docking device by observing the laser path, thereby adjusting the pitch angle of the pipe (8) so that the laser receiving plate of the next circular pipe transport docking device can receive the laser, ensuring that the two pipe sections (8) have the same direction, and then docking and welding.

9. A method for transporting and connecting circular pipes according to claim 8, characterized in that: The pipe (8) has specifications of DN80, DN100, DN200, and DN250, with a length of 6m, and is made of steel or rigid polyvinyl chloride.

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