Hough support for assembling spliced large-diameter pipe fitting

Abstract

The invention discloses a half support for assembling a spliced large-diameter pipe fitting. The half support comprises an upper half, a lower half, an upper stand column, a supporting disc, a lower stand column and a support base. Bearings and rubber blocks are arranged in the upper half and the lower half, so that rotatable clamping of the pipe fitting is achieved. The upper stand column adopts a hydraulic lifting device, and the height can be accurately adjusted; a bearing and a lockable wrench are arranged in the supporting disc, so that a horizontal rotating function is realized; the universal wheels and the telescopic seat legs are arranged at the bottom of the bracket seat, so that the bracket seat has moving flexibility and supporting stability; the lower half is provided with an infrared laser transmitting / receiving device for splicing and centering; the support further has a one-key reset function and can automatically recover to an initial state. Through multi-module system integration, multi-degree-of-freedom adjustment, accurate positioning, convenient moving and stable supporting of the large-diameter pipe fitting in the assembling process are achieved, and the assembling efficiency and precision are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of splicing large-diameter pipe fitting assembly technology, and in particular to a splitting bracket for assembling large-diameter pipe fittings. Background Technology

[0002] With the development of industrial technology, especially in the fields of petroleum, chemical, construction, and water treatment, the demand for large-diameter pipe fittings is increasing. These pipe fittings are not only large in size and heavy in weight, but also have extremely high requirements for precision and stability during assembly. Traditional pipe fitting assembly methods mostly rely on manual operation and simple mechanical assistance, which is not only inefficient but also poses high safety risks and makes it difficult to guarantee precision. Although there are some supports or devices on the market to assist in the assembly of large-diameter pipe fittings, they generally have the following problems: they require multiple people to cooperate, the operation process is cumbersome, and the efficiency is low; it is difficult to achieve high-precision docking during pipe fitting connection, affecting the quality and safety of the final pipeline system; due to the limitations of the support design itself, moving and adjusting the position is laborious and inflexible; and it is difficult to adapt to the assembly needs of different models and sizes of pipe fittings, resulting in insufficient flexibility. In order to overcome the above technical problems, it is necessary to design a splicing type half-support for the assembly of large-diameter pipe fittings, which can ensure the safety and convenience of operation and meet the high standards of modern industry for the assembly technology of large-diameter pipe fittings. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a splicing type half bracket for assembling large-diameter pipe fittings, which overcomes the shortcomings of the prior art, enables higher assembly efficiency and precision, ensures the safety and convenience of operation, and meets the high standard requirements of modern industry for large-diameter pipe fitting assembly technology.

[0004] To solve the above-mentioned technical problems, the present invention provides the following apparatus: A splicing type large-diameter pipe fitting assembly bracket includes an upper bracket, a lower bracket, an upper column, a support disc, a lower column, and a bracket base. The upper and lower brackets are connected to clamp the pipe fittings. The lower bracket is connected to the support disc via the upper column, and the support disc is connected to the bracket base via the lower column. Bearings and rubber blocks are installed inside the upper and lower brackets. The upper column is a hydraulic lifting device, including an upward pressure rod and a downward return valve. Bearings and a lockable fixing wrench are installed inside the support disc. The bottom of the bracket base is equipped with casters and three retractable legs. An infrared laser emitting / receiving device is installed on the lower bracket. The bracket also has a one-key reset device for controlling the upper column and the bracket base legs to automatically reset to their initial positions.

[0005] Furthermore, the aforementioned bracket, bearing, and rubber block allow the pipe to rotate freely and buffer vibrations while in a clamped state.

[0006] Furthermore, in the aforementioned half-bracket, the hydraulic lifting device can raise the half-unit by raising the pressure rod and lower it precisely by lowering the return oil valve.

[0007] Furthermore, in the aforementioned half-bracket, when the fixing wrench of the supporting disc is loosened, the upper column and half-unit can rotate horizontally around the bearing, and the position is fixed after the wrench is tightened.

[0008] Furthermore, the aforementioned bracket and caster wheels are equipped with brake locks, which can be unlocked when moving and locked after positioning.

[0009] Furthermore, in the aforementioned bracket, the legs of the bracket base can be hydraulically or manually extended and retracted, increasing the contact area with the ground after extension and improving load-bearing stability.

[0010] Furthermore, the aforementioned half-bracket and the infrared laser emitting / receiving device are used for optical alignment with adjacent pipe sections or reference targets to achieve splicing positioning.

[0011] Furthermore, the aforementioned splicing type large-diameter pipe fitting assembly half-bracket can support a large-diameter pipe fitting weighing no more than 20 tons by a single half-bracket, and a large-diameter pipe fitting weighing 20 to 40 tons can be supported by two half-brackets at both ends.

[0012] Furthermore, the aforementioned splicing type large-diameter pipe fitting assembly half bracket has a one-key reset function, which can automatically return the upper column and bracket seat legs to their initial positions.

[0013] Compared with the prior art, the beneficial effects of the above-mentioned technical solution of the present invention are as follows: 1. The upper and lower half-frame structure allows for quick assembly and disassembly, improving assembly efficiency and applicability. The upper and lower half-frames are equipped with bearings, enabling free rotation and precise docking of the fittings, which greatly improves assembly accuracy.

[0014] 2. The upper column is equipped with a hydraulic device, which can adjust the height of the pipes according to the assembly needs. It is easy to operate and highly adaptable.

[0015] 3. The support disc design adds rotation functionality, improving flexibility and convenience during assembly.

[0016] 4. The bracket is equipped with casters at the bottom and a locking mechanism, which not only ensures the stability of the assembly process, but also facilitates the movement and positioning of the bracket. Attached Figure Description

[0017] Figure 1 A schematic diagram of the connecting device is shown; Figure 2A schematic diagram showing the laser spot and the target concentrically when the infrared laser transmitter / receiver is in operation.

[0018] Explanation of reference numerals in the attached figures: 1-Upper half-frame; 2-Lower half-frame; 3-Upper column; 4-Support disc; 5-Lower column; 6-Bracket base; 7-Bearing; 8-Rubber block; 9-Rising pressure rod; 10-Lowering return valve; 11-Bearing; 12-Fixed wrench; 13-Wheel caster; 14-Wheel caster; 15-Wheel caster; 16-Infrared laser transmitter / receiver. Detailed Implementation

[0019] To make the technical problems, technical solutions and advantages of the present invention clearer, a more detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0020] In the accompanying drawings, components with the same structure are indicated by the same numerical designation. The dimensions and thicknesses of each component shown in the drawings are arbitrary, and the invention does not limit the dimensions and thicknesses of each component. To make the illustrations clearer, the thickness of some components has been appropriately exaggerated in the drawings.

[0021] The directional terms used in this invention, such as up, down, front, back, inside, outside, front, back, top, and bottom, are merely directions in the accompanying drawings and are used only to explain and illustrate this invention, not to limit the scope of protection of this invention.

[0022] The following is combined Figure 1 and Figure 2 Explain the structure and operation method of the half-stent. Example 1 Step S1: Pre-installation preparation of segmented large-diameter pipe fittings and accessories: Conduct appearance and dimensional quality inspections on the segmented large-diameter pipe fittings, matching flanges, bolts, plugs, sleeves, and other accessories; simultaneously, conduct pre-start checks on each functional system of the spliced ​​large-diameter pipe fitting assembly half-support to ensure normal operation, including checking the oil level and pipeline sealing of the hydraulic lifting system, confirming whether the rotation mechanism of the support disc 4 is flexible and whether the fixing wrench 12 can be locked normally, checking whether the braking lock function of the universal wheels 13, 14, and 15 at the bottom of the support base 6 is reliable, verifying whether the telescopic mechanism of the three legs of the support base 6 can extend and retract smoothly and lock effectively, and checking the power and beam calibration of the infrared laser emitting / receiving device 16 installed on the lower half 2; in addition, mark the installation center line, docking reference line, and pre-positioning line of the support base for each pipe segment on the flat ground of the installation site according to the design drawings; Step S2, Positioning and Fixing of the Half-Support for Assembling Large-Diameter Pipe Fittings: First, loosen the brake locks of the universal wheels 13, 14, and 15 on the support seat 6, and smoothly push the half-support as a whole to the vicinity of the installation position near the pipe section stacking area; then, fine-tune the position of the support seat according to the support pre-positioning line marked on the ground, so that the support is initially aligned with the installation axis; then, start the hydraulic or manual operation of the seat leg extension mechanism to extend the three seats outwards simultaneously until the support plate at the bottom is in full contact with the ground, and then lock the mechanical or hydraulic locking device of the seats to significantly enhance the load-bearing stability and anti-overturning ability of the support; finally, operate the hydraulic lifting device of the upper column 3, repeatedly press down the lifting rod 9 to drive the hydraulic cylinder to extend, thereby initially raising the clamping unit composed of the upper half-support 1 and the lower half-support 2 to the estimated pipe fitting installation height. During fine-tuning, the clamping unit can be precisely lowered by slowly operating the lowering return oil valve 10, leaving space for subsequent pipe fitting hoisting; Step S3: Pre-installation of large-diameter pipe sections: Use a crane or gantry crane to smoothly lift and place a section of large-diameter pipe onto the arc-shaped support surface of the lower half 2 of the half bracket. Close the upper half 1 and tighten it with connecting bolts to reliably clamp the pipe. Then, turn on the infrared laser emitting / receiving device 16 on the lower half 2 and point the emitted laser beam towards the center of the target pre-attached to the end face of the adjacent pipe section or project it onto the baseline on the ground / wall. If the laser spot shows a horizontal angle deviation, loosen the side of the support disc 4. Release the locking of the disc by using the fixed wrench 12, manually push the upper column 3 or the half part to make the support disc rotate smoothly around its internal bearing 11, driving the entire half clamping unit and pipe to rotate horizontally together until the laser spot coincides with the center of the target, then tighten the fixed wrench 12 to lock the angle; if the laser shows a height deviation, make fine adjustments to the hydraulic lifting device by gently pressing down the lifting lever 9 or slowly operating the lowering return oil valve 10, so that the center line of the pipe is completely aligned with the designed installation axis in the vertical direction; Step S4, Pipe Segment Connection and Verification: After completing the above rotation and lifting adjustments and ensuring that the pipe fittings are precisely aligned with the adjacent segments, the flange connection operation is performed, including inserting bolts and performing preliminary tightening; then the infrared laser emitting / receiving device 16 is activated again to perform a final verification of the alignment of each mating flange face. After confirming that there are no errors, the bolts are finally tightened according to the procedure. Step S5, Support Reset and Transfer: When the pipe section connection work at this workstation is completed and the support needs to be moved or transferred, press the "One-Key Reset" function button located on the control panel of the support base 6 or the upper column 3. This command triggers the electro-hydraulic control system of the support, which automatically performs the following actions: the hydraulic cylinder of the upper column 3 automatically retracts, causing the half-clamping unit to descend smoothly to the preset initial safe height; the three extended legs of the support base 6 simultaneously retract to the fully retracted transport state; and the braking mechanism of the casters may also automatically lock according to the preset program. After the reset action is completed, check that all components are in place. Unlock the casters to easily push the entire half-support away from the current workstation or transfer it to the next pipe section assembly point to prepare for the next round of work.

[0023] Example 2: Structure and Function of a Half-Stretcher A type of splicing large-diameter pipe fitting assembly half-bracket, such as Figure 1 As shown, it includes: 1. Clamping unit: It is composed of an upper clamp (1) and a lower clamp (2) connected by hinges and bolts. Multiple rollers with deep groove ball bearings (7) and shock-absorbing rubber blocks (8) are installed on the inner arc surface, so that the pipe can still rotate slightly in the clamp after being clamped, and buffer the vibration and impact during hoisting and adjustment.

[0024] 2. Lifting and Rotation Unit: The upper column (3) is a single-acting hydraulic cylinder structure. The piston is driven to rise by manually pressing the lifting rod (9), which in turn lifts the half unit. The handwheel of the rotating lowering return valve (10) can control the hydraulic oil to slowly return, so as to achieve precise and controllable lowering of the half unit.

[0025] The support disc (4) is mounted on the top of the lower column (5) via a large thrust bearing (11). After the fixing wrench (12) on its side is loosened, the entire upper column and half unit can rotate horizontally by ±180° around the vertical axis.

[0026] 3. Motion and Stabilization Unit: The bracket base (6) is a triangular welded structure with three casters (13, 14, 15) with brake locks installed at the bottom.

[0027] Each seat leg is fitted with a hydraulically or manually extendable outrigger. When extended, the rubber support plate at the bottom increases the ground contact area, significantly improving stability and anti-overturning properties under load.

[0028] 4. Positioning and Control System: The lower half (2) is equipped with an infrared laser transmitter / receiver (16) on its side, which can emit a visible red light spot for centering.

[0029] The control panel is integrated into the upper column (3) in an easy-to-operate position and is equipped with a "one-key reset" button. After being triggered, the electro-hydraulic control system automatically completes the descent of the half unit and the retraction of the seat legs according to the preset program.

[0030] Example 3: Assembly operation of pipe fittings under 20 tons Working condition: Install a 6m long, Φ1020mm diameter, and approximately 15-ton carbon steel pipe.

[0031] Operation process: 1. Preparation and Inspection: As described in Example 1, inspect each system of the support structure. Lay out the ground wiring.

[0032] 2. Support Positioning: Push the half-support to the vicinity of the pipe section and roughly position it according to the pre-positioning line. Extend and lock the three legs to form a stable triangular support. Operate the hydraulic lifting device to raise the half-unit to a height of approximately 1.2 meters.

[0033] 3. Pipe fitting hoisting and clamping: Use a crane to hoist the pipe section onto the lower half-frame arc surface. Close the upper half-frame and tighten it with bolts. At this point, the weight of the pipe fitting (15 tons) is entirely supported by a single half-frame support, and the support is stable and without any abnormalities.

[0034] 4. Adjustments to the central position: Turn on the laser device (16) and project the light spot onto the target on the flange face of the adjacent pipe section.

[0035] The light spot was found to be 5mm off from the center of the target. Loosen the fixing wrench (12), manually push the half unit lightly, and drive the 15-ton pipe to rotate smoothly by about 2° through the rotation of the support disc (4) until the light spots overlap, and then tighten the fixing wrench (12).

[0036] Observation of the laser line revealed a height difference of 3mm. Gently press the lifting rod (9) twice to precisely raise the pipe to the designed height.

[0037] 5. Connection and Verification: Insert flange bolts and initially tighten them. Verify the alignment accuracy again using a laser device (≤1mm), and then tighten the bolts completely after confirmation.

[0038] 6. Bracket Reset: Press the "One-Click Reset" button, the half unit will automatically descend, the seat legs will retract synchronously, and after unlocking the casters, a single person can push the bracket away.

[0039] The aforementioned single half bracket fully meets the requirements for stable support and precise posture adjustment of 15-ton pipe fittings, and is convenient and efficient to operate.

[0040] Example 4: Assembly Operation of 20-40 Ton Heavy Pipe Fittings Working condition: Install a heavy alloy steel pipe with a length of 10m, a diameter of Φ1420mm, and a weight of approximately 30 tons.

[0041] Operation process: 1. Support Configuration Selection: Based on the design drawings, the pipe section weighs 30 tons, falling within the 20-40 ton range. Two half-supports are selected for support. The two supports are of the same model and specifications, designated as Frame A and Frame B respectively. The structure of the two half-supports is the same as in Example 2.

[0042] 2. Double-bracket arrangement: Based on the pipe section length and center of gravity, mark the support points of the two supports on the installation axis, approximately 8 meters apart.

[0043] Push the two half-supports, A and B, to the support points respectively, extend their respective legs simultaneously and lock them, ensuring that the support surfaces of the two supports are at the same horizontal level.

[0044] 3. Coordinated hoisting and support: Use a crane with double hooks (or two cranes) to horizontally lift a 30-ton pipe section.

[0045] Place both ends of the pipe section simultaneously and stably on the lower supports of brackets A and B. At this point, the weight of the pipe section is supported by both supports (approximately 15 tons each).

[0046] Close and tighten the upper flaps of the two supports respectively.

[0047] 4. Coordinated adjustments: The infrared laser devices (16) on both supports are activated simultaneously.

[0048] First, adjust frame A (near the fixed end), align its laser with the reference target by rotating and raising it, and then tighten its fixing wrench (12).

[0049] Then adjust the B frame (closer to the docking end), ensuring its own laser alignment while observing the overall straightness of the pipe section. By operating the B frame's rising pressure rod (9) and rotating support disk (4), fine-tune its height and angle until the entire axis of the pipe section coincides with the design axis.

[0050] During this process, the independent but coordinated lifting and rotation functions of the two supports ensure the overall posture adjustment accuracy of the heavy-duty long pipe section.

[0051] 5. Connection and Verification: Perform flange connection work and use two laser points to perform composite verification of the entire axis.

[0052] 6. Dual bracket reset: Press the "one-key reset" button on each bracket respectively, and both brackets will complete the reset action simultaneously and then be removed.

[0053] The support system consisting of the two half-braces described above safely and stably completed the assembly of 30-ton heavy pipe fittings. Large-diameter pipe fittings can be supported at both ends by the two half-braces.

[0054] Example 4: Specific Application of Infrared Laser Alignment and Buffering Function In the operation of Example 3, at the moment the pipe fitting is hoisted and falls to the support, the rubber block (8) undergoes elastic deformation, which effectively absorbs the impact energy, avoids damage to the surface of the pipe fitting and violent shaking of the support, and demonstrates the function of "buffering vibration".

[0055] During the adjustment phase, the application process of the infrared laser emitting / receiving device (16) is as follows: Emission: The device emits a visible red laser spot with a diameter of approximately 5 mm.

[0056] Reception and Judgment: The laser spot is projected onto the center of a reflective target pre-attached to the flange surface 2 meters away. For example... Figure 2 As shown, the operator can see the relative position of the laser spot and the concentric circle of the target through the optical observation lens on the device, and directly determine the deviation in the X / Y direction.

[0057] Dynamic tracking (optional): In high-end models, the device can also be equipped with a photosensitive receiver that emits a buzzer when the received reflected light signal reaches its strongest, thus achieving the "automatic heart-finding" function.

[0058] This process is used for optical alignment with adjacent pipe sections or reference targets to achieve splicing and positioning.

[0059] Example 5: Implementation details of the one-key reset function Taking the completion of the operation in Example 3 as an example: 1. The operator presses the yellow "One-Key Reset" button.

[0060] 2. The electro-hydraulic control system (PLC control) executes automatically in the following sequence: a. The solenoid valve activates, connecting the return oil circuit of the hydraulic cylinder of the upper column (3). The cylinder rod begins to retract under the weight of the pipe and the action of the internal spring, and the half unit descends at a constant speed. When it descends to the preset safe height of 0.5 meters above the ground, the limit sensor is triggered, and the descent stops.

[0061] b. Simultaneously, the solenoid valves of the extension and retraction hydraulic circuits of the three legs of the control bracket (6) reverse, the hydraulic cylinders retract, and the legs retract synchronously. When the legs are fully retracted to the transport position, the magnetic proximity switch sends a signal. c. (Optional configuration) The brake cylinders of the casters are activated to automatically lock the wheels.

[0062] 3. Reset Complete Indication: The green indicator light on the control panel remains constantly lit, accompanied by a short beep, indicating that the bracket has been reset to its compact transport position.

[0063] This function greatly simplifies the finishing work, improves equipment transfer efficiency, and truly realizes the characteristics of a "one-click reset device".

[0064] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A type of splicing large-diameter pipe fitting assembly bracket, characterized in that, The application relates to a splicing type large-diameter pipe fitting assembling jib support. The jib support comprises a clamping unit for fixing a pipe fitting, a lifting and rotating unit for adjusting the height and horizontal angle of the clamping unit, a moving and stabilizing unit for supporting the whole support and realizing moving and fixing, and a positioning and control system for assisting pipe fitting centering and operation control.

2. The ha f bracket for assembling a spliced large-diameter pipe according to claim 1, characterized by In the clamping unit, the upper jib (1) and the lower jib (2) are connected through hinging and bolting, and a plurality of rollers with deep groove ball bearings (7) and damping rubber blocks (8) are arranged on the inner arc surfaces.

3. The splice joint half for assembling large diameter pipe according to claim 1, characterized by The lifting and rotating unit comprises an upper stand (3) in a single-acting hydraulic cylinder structure, a manual lifting pressure rod (9) for driving the plunger of the upper stand (3) to ascend, and a descending return valve (10) for controlling the precise descending of the plunger; a supporting disc (4) is arranged at the top of a lower stand (5) through a large thrust bearing (11), and the upper stand (3) is fixed to the supporting disc (4); and a fixed wrench (12) is arranged on the side of the supporting disc (4) and can be removed to allow the supporting disc (4) to rotate.

4. The splice joint half for assembling large diameter pipe according to claim 1, characterized by The moving and stabilizing unit comprises a support base (6) in a triangular welded structure, three universal wheels (13, 14 and 15) with brake locks arranged at the bottom of the support base (6), and three seat legs sleeved in the support base (6) and capable of being hydraulically or manually telescoped, and the bottom of the seat legs is provided with a supporting disc after being extended.

5. The splice joint half for assembling large diameter pipe sections according to claim 1, characterized in that The positioning and control system comprises an infrared laser emitting / receiving device (16) arranged on the side of the lower jib (2) and used for emitting visible laser spots to realize centering, and a control panel integrated in a position convenient for operation and provided with a "one-key reset" function button for triggering the electro-hydraulic control system to automatically execute the reset program of the clamping unit descending and the seat leg retracting.

6. A method of assembling a large diameter pipe, characterised in that, The splicing type large-diameter pipe fitting assembling jib support comprises the following steps: S1, preparation and inspection: the pipe fitting, fittings and the jib support are inspected, and an installation reference line is marked on the ground of the installation site; S2, support positioning and fixing: the jib support is moved to the vicinity of the installation position and is preliminarily positioned, the seat legs are extended and locked to enhance the stability, and the lifting device is operated to adjust the clamping unit to the estimated height; S3, pipe fitting pre-assembly and centering: the pipe fitting is hoisted to the lower jib (2) and the upper jib (1) is fastened after being folded; the infrared laser emitting / receiving device (16) is started, the height and horizontal angle of the pipe fitting are adjusted through the operation of the lifting and rotating unit, and the pipe fitting is centered until the laser spots coincide with the reference target or reference line; S4, pipe segment connection and review: the pipe segment flange connection is performed, and the centering accuracy is reviewed again by using the infrared laser emitting / receiving device (16); S5, support resetting and transferring: the one-key reset function is operated to automatically reset the jib support to the transportation state, and then the jib support is moved away or transferred.

7. A method of assembling large diameter pipe according to claim 6, characterised in that, In the step S2, the positioning of the support needs to be finely adjusted according to the support preliminary positioning line marked on the ground, so that the support is preliminarily aligned with the installation axis.

8. The method of assembling large diameter pipe as defined in claim 6 wherein, The centering and adjusting in step S3 includes: if there is a horizontal angle deviation, adjusting by loosening the fixed wrench (12) and rotating the support disc (4); if there is a height deviation, adjusting by operating the lifting lever (9) or the descending oil return valve (10).

9. The method of assembling large diameter pipe as defined in claim 6 wherein, When the weight of the pipe to be assembled exceeds the recommended load range of a single support, two half supports are used in cooperation, the step S2 includes arranging the support points of the two supports according to the length and gravity center of the pipe section, and the step S3 includes placing the two ends of the pipe on the two supports respectively, and cooperating the lifting and rotating units of the two supports to realize the overall centering and pose adjustment of the pipe.

10. The method of assembling large diameter pipe as defined in claim 6 wherein, In the step S5, after the one-key reset function is triggered, the electro-hydraulic control system of the half support automatically performs the following actions: the hydraulic cylinder of the upper stand column (3) is retracted to make the clamping unit descend to a preset safe height, and at the same time, the three extended seat legs of the support seat (6) are synchronously retracted to the transportation state.

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