Hydraulic butt joint equipment for flange assembly

Abstract

The invention discloses hydraulic butt joint equipment for flange assembly. Comprising a frame with threaded foot supports and universal wheels, a square-opening vertical beam vertically and fixedly mounted at the top end of the frame, a hollow frame slidably mounted on the outer wall of one side of the square-opening vertical beam in the vertical direction, a key shaft type advancing assembly mounted in the hollow frame and a chuck mounted at the driving end of the key shaft type advancing assembly. The key shaft type advancing assembly enables the chuck to rotate, and a hydraulic lifting assembly used for controlling the height of the hollow frame is installed on the outer wall of one side of the square opening vertical beam. The chuck and the heavy flange plate are made to rotate through the key shaft type advancing assembly till hole positions are aligned, the heavy flange plate and the fixed end flange are made to make contact through the hydraulic butt joint assembly, and therefore rigid fixing is achieved through the chuck, independent leveling is conducted on the gear connecting rod type alignment plate assembly, rotary hole alignment is conducted through the key shaft type advancing assembly, and finally propelling is conducted through the hydraulic butt joint assembly. And high-precision and high-efficiency flange butt joint operation is completed.

Description

Technical Field

[0001] This invention relates to the field of flange hydraulic assembly technology, specifically to a hydraulic docking device for flange assembly. Background Technology

[0002] Hydraulic flange assembly equipment is a key industrial robot for the precision assembly of heavy-duty pipe flanges. Its core function is to safely, accurately, and efficiently complete the heavy-duty assembly tasks that are difficult for traditional human labor through mechanization and automation. The structure of this type of equipment usually includes multiple parts such as a hydraulic system, support frame, docking device, control system, and safety device. The flange docking operation begins with the positioning and clamping of the equipment under the pipe section to be installed, followed by rough lifting and initial approach, and then entering the most critical precision alignment stage. The operator adjusts the height, horizontal position, and angle in sequence until the two flanges are completely concentric and the gap is uniform. Then, the equipment drives the pipe section to advance smoothly along the axis, so that the two sealing surfaces are in uniform contact and tightly fitted. While maintaining this ideal alignment, the operator can quickly insert and pre-tighten all bolts. After the connection has achieved initial stability, the equipment is unloaded and removed, and finally the bolts are tightened by a torque tool.

[0003] As disclosed in CN215239074U, a pipe support for boiler flange pipe assembly includes a base, a support platform fixedly mounted on the upper surface of the base, and a worm gear reducer fixedly mounted on the upper surface of the support platform. The input end of the worm gear reducer faces forward, and the output end of the worm gear reducer faces upward. A screw is vertically fixedly mounted on the output end of the worm gear reducer, and a pipe sleeve is screwed onto the screw. The pipe sleeve has threads matching the screw. A V-shaped base plate is fixedly mounted on the upper end of the pipe sleeve. V-shaped baffles are fixedly mounted on both ends of the upper surface of the V-shaped base plate. Rollers are rotatably mounted on the inner side of each V-shaped baffle. The rollers on the inner side of each V-shaped baffle are arranged in a V-shape along the V-shaped baffle. A guide assembly is installed between the V-shaped base plate and the support platform, which can lift the flanges of adjacent flange pipes to the same height and facilitate circumferential rotation to align the flange holes, reducing the difficulty of docking. As can be seen from the above technical solution, one of the flanges to be connected is mainly placed on two V-shaped roller tracks. The alignment of the flange holes is adjusted manually by rotating the roller track. Although the V-shaped roller track facilitates the rotation of the pipeline, it is essentially an unconstrained support structure. When the hydraulic equipment pushes the flange to axially fit together, the huge thrust can easily cause the pipeline to have slight axial movement or lateral sliding on the rollers, thereby destroying the initial alignment state. In addition, the flange at the fixed end and the flange on the equipment are often misaligned after docking, that is, the two disc surfaces are not completely overlapped. It is also necessary for the staff to repeatedly start and move the entire docking equipment with heavy pipe sections until the two flange disc surfaces are roughly aligned before the subsequent hole alignment operation can be carried out. The overall adjustment accuracy is low, the repeatability is poor, and it is also easy to make judgment errors due to visual errors, fatigue and other factors. Summary of the Invention

[0004] The purpose of this invention is to provide a hydraulic docking device for flange assembly. The heavy-duty flange to be connected is fixed by a chuck at the end of a key shaft-type advance assembly. The entire device is moved to the flange at the fixed end via a chassis. The hydraulic lifting assembly is operated via a control panel according to the height of the fixed end flange, so that the hollow frame, key shaft-type advance assembly, and hydraulic docking assembly are moved to a suitable height. With the heavy-duty flange and the fixed end flange not in contact, the operator drives the gear-connecting rod type disc assembly through a hydraulic shaft rotation drive assembly to calibrate the two flanges from the left and right sides until the misaligned flange surfaces overlap. Finally, the key shaft-type advance assembly rotates the chuck and the heavy-duty flange until the holes are aligned, and the hydraulic docking assembly brings the heavy-duty flange and the fixed end flange into contact, facilitating the installation of bolt assemblies, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic docking device for flange assembly, comprising a frame with threaded feet and casters, a square beam vertically fixed at the top of the frame, a hollow frame slidably mounted on one outer wall of the square beam in a vertical direction, a keyed shaft type advancing assembly installed inside the hollow frame, and a chuck installed on the drive end of the keyed shaft type advancing assembly, the keyed shaft type advancing assembly causing the chuck to rotate, and a hydraulic lifting assembly for controlling the height of the hollow frame installed on one outer wall of the square beam, the upper part of the hollow frame... A hydraulic docking assembly is provided to drive the chuck to move along the axial direction. An aluminum profile frame is fixed to the bottom end of the hollow frame, and a gear-connecting rod type chuck assembly is installed on the outer walls of the left and right sides of the aluminum profile frame. A hydraulic shaft drive assembly for inputting power to the gear-connecting rod type chuck assembly is installed on one side inside the aluminum profile frame. A hydraulic station for providing hydraulic power to the hydraulic lifting assembly and the hydraulic shaft drive assembly is provided on the top of the frame on one side of the square beam. A control panel that is electrically connected to the input end of the hydraulic station is installed at the lower position on the surface of the square beam.

[0006] Preferably, the hydraulic lifting assembly consists of a Z-axis hydraulic cylinder and a back-sleeve slide. The Z-axis hydraulic cylinder is parallel to the length direction of the square beam and fixed on one side of the outer wall of the square beam. The back-sleeve slide is slidably installed on one side of the outer wall of the square beam via a track, and the lower end of the back-sleeve slide is fixedly connected to the upper end of the Z-axis hydraulic cylinder. Photoelectric sensor one and photoelectric sensor two are also installed on one side of the outer wall of the square beam via a bracket. Photoelectric sensor one and photoelectric sensor two correspond to the upper end point and lower end point of the back-sleeve slide, respectively. The output ends of photoelectric sensor one and photoelectric sensor two are electrically connected to the input end of the control panel. The hollow frame is installed on one side of the outer wall of the back-sleeve slide.

[0007] Preferably, the keyed shaft type feed assembly includes a spline shaft, a bushing, and an inner spline hollow shaft. The bushing is fixed on one outer wall of the hollow frame, the inner spline hollow shaft is rotatably installed in the bushing, the spline shaft is coaxially fitted inside the inner spline hollow shaft, and one end of the spline shaft extends through to the outside of the bushing and is bolted to one outer wall of the chuck.

[0008] Preferably, a support plate is installed on the inner wall of the hollow frame below the bushing. A handwheel shaft is rotatably installed inside the support plate via a bearing. The axis of the handwheel shaft is parallel to the inner spline hollow shaft. A sprocket is fixed to one end of the handwheel shaft and the outer circumference of the inner spline hollow shaft. A chain is installed between the two sprockets.

[0009] Preferably, the hydraulic docking assembly includes a hydraulic jack, a slide, and a straight-end shaft carrier. The hydraulic jack is mounted on one outer wall of the back-sleeve slide, and the length direction of the hydraulic jack is parallel to the length direction of the spline shaft. The slide is slidably mounted on one inner wall of the hollow frame via a track. The straight-end shaft carrier is bolted to one outer wall of the slide. One end of the spline shaft is rotatably connected to one outer wall of the straight-end shaft carrier via a roller bearing.

[0010] Preferably, a vertical plate is integrally formed on one side of the top of the carriage, and the piston rod end of the hydraulic jack is fixedly connected to the outer wall of one side of the vertical plate.

[0011] Preferably, the hydraulic shaft drive assembly consists of a second hydraulic cylinder and a second handle block. The second hydraulic cylinder is hinged to one side of the inner wall of the aluminum profile frame in an inclined manner. A fisheye joint is fixed to the top of the piston rod of the second hydraulic cylinder, and a second handle block is hinged to one side of the outer wall of the fisheye joint.

[0012] Preferably, the gear-connecting rod type disc assembly includes a rotating shaft rotatably mounted on the left and right inner walls of the aluminum profile frame via a vertical bearing seat, two longitudinal columns fixedly mounted on the left and right outer walls of the aluminum profile frame, and vertical arms slidably mounted on the two longitudinal columns on the same side. An inclined platform is detachably mounted between the two vertical arms on the same side. A gear unit is fixed at one end of each rotating shaft near the hollow frame, and the two gear units are kept meshed. A first handle block is fixed at both ends of the rotating shaft surface. A connecting rod is hinged to the upper end of the first handle block, and one end of the connecting rod is hinged to one side outer wall of the vertical arm. The upper end of the second handle block is bolted to one of the rotating shafts.

[0013] Preferably, the lower surface of the inclined platform is always higher than the upper surface of the aluminum profile frame, the chuck is located between the two inclined platforms, and the top of the aluminum profile frame below the chuck is an empty section.

[0014] Preferably, the interior of the upright arm is provided with multiple through holes at equal intervals along the length direction, and spring positioning pins are fixed on the left and right outer walls of the inclined platform. The inclined platform is fitted onto the two upright arms on the same side and connected to the upright arms through the spring positioning pins and through holes.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The hydraulic docking equipment for flange assembly is equipped with a structure that includes a frame, a hydraulic station, a hydraulic lifting assembly, a key shaft type advance assembly, a chuck, a hydraulic docking assembly, a hydraulic shaft rotation drive assembly, and a gear-connecting rod type disc assembly, etc., which cooperate with each other. The heavy-duty flange to be connected is fixed by the chuck at the end of the key shaft type advance assembly. The entire equipment is moved to the flange at the fixed end by the frame, and the hydraulic lifting assembly is operated through the control panel according to the height of the flange at the fixed end, so that the hollow frame, the key shaft type advance assembly, and the hydraulic docking assembly are moved to the appropriate position. With the heavy-duty flange and the fixed-end flange not in contact, the operator uses a hydraulic shaft drive assembly to drive the gear-connecting rod type disc assembly to calibrate the two flanges from the left and right sides until the misaligned flange surfaces overlap. Finally, the key shaft type advance assembly causes the chuck and heavy-duty flange to rotate until the holes are aligned. The hydraulic docking assembly then brings the heavy-duty flange and the fixed-end flange into contact. By utilizing the rigid fixation of the chuck, the independent leveling of the gear-connecting rod type disc assembly, the rotation of the key shaft type advance assembly to align the holes, and the final advancement of the hydraulic docking assembly, a high-precision and high-efficiency flange docking operation is completed.

[0016] The process begins with rigid alignment of the two flanges from both sides using a gear-connecting rod type assembly, ensuring parallelism and overlap. Then, a key shaft type advance assembly drives the chuck to rotate precisely, aligning the bolt holes circumferentially. This reduces coupling and uncertainty in the adjustment, resulting in extremely high and reliable alignment accuracy. The chuck at the end of the key shaft type advance assembly secures the heavy-duty flange, replacing the previous V-roller support and forming a strong rigid constraint. This eliminates axial movement or lateral sliding of the pipeline during docking and adjustment, providing a stable and reliable reference for all fine-tuning actions. Furthermore, all fine parallelism calibration and hole pre-alignment are completed with a gap between the two flanges and without contact, avoiding the risk of scratches or impacts to the precision sealing surfaces caused by repeated misalignment and friction in contact conditions, as in traditional methods. This ensures the sealing reliability of the connection.

[0017] Secondly, the transmission docking scheme required repeated trial and error between moving the mobile equipment base, prying the pipe, and manual rotation. In contrast, this scheme involves moving the frame into place, hydraulically lifting and adjusting the height, starting the alignment assembly to calibrate parallelism, driving the moving assembly to rotate and align the holes, and finally instructing the hydraulic docking assembly to complete the axial fitting. The operation process is smooth, greatly shortening the effective working time. Moreover, the lifting, translation, rotation, and final push fitting of the heavy flange are all driven by hydraulic and mechanical mechanisms and centrally operated by the control panel. Workers no longer need to spend a lot of physical effort to manually rotate the pipe, nor do they need to frequently enter the dangerous area between the two heavy flanges for close observation and adjustment. This improves efficiency while significantly improving working conditions and operational safety. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0019] Figure 2 yes Figure 1 Sectional view at point AA;

[0020] Figure 3 yes Figure 1 A three-dimensional structural cross-sectional view of point AA;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 ;

[0024] Figure 7 This is a schematic diagram of the three-dimensional structure of the hydraulic lifting assembly of the present invention;

[0025] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A in the middle;

[0026] Figure 9 This is a schematic diagram of the three-dimensional structure of the key shaft type advance assembly of the present invention;

[0027] Figure 10 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 4 ;

[0028] Figure 11 This is a schematic diagram of the three-dimensional structure of the gear-connecting rod type disc assembly of the present invention;

[0029] Figure 12 For the present invention Figure 11 Enlarged structural diagram at point B;

[0030] Figure 13 This is a schematic diagram of the three-dimensional structure of the hydraulic shaft rotation drive assembly of the present invention.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Chassis; 2. Square-mouth upright beam; 3. Hydraulic lifting assembly; 301. Z-axis hydraulic cylinder; 302. Back-sleeve type slide; 303. Photoelectric sensor one; 304. Photoelectric sensor two; 4. Hollow frame; 5. Keyed shaft type advance assembly; 501. Splined shaft; 502. Bushing; 503. Internal splined hollow shaft; 504. Chuck; 505. Support plate; 506. Handwheel shaft; 507. Sprocket; 6. Hydraulic docking assembly; 601. Hydraulic jack; 602. Carriage; 603. Vertical plate; 604. Straight-mouth type shaft carrier; 7. Aluminum profile frame; 8. Gear and connecting rod type disc assembly; 801. Longitudinal column; 802. Vertical arm; 803. Inclined platform; 804. Connecting rod; 805. Rotating shaft; 806. First handle block; 807. Gear unit; 9. Hydraulic shaft rotation drive assembly; 901. Second hydraulic cylinder; 9011. Fisheye joint; 902. Second handle block; 10. Hydraulic station; 11. Control panel. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0035] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0036] Example 1, by Figures 1 to 5The present invention comprises a frame 1 with threaded feet and casters, a square beam 2 vertically fixed to the top of the frame 1, a hollow frame 4 slidably mounted on one outer wall of the square beam 2 along the vertical direction, a keyed shaft type feed assembly 5 installed inside the hollow frame 4, and a chuck 504 installed on the drive end of the keyed shaft type feed assembly 5. The keyed shaft type feed assembly 5 causes the chuck 504 to rotate. A hydraulic lifting assembly 3 for controlling the height of the hollow frame 4 is installed on one outer wall of the square beam 2. A device for driving the chuck 504 along the axis is provided above the hollow frame 4. The hydraulic docking assembly 6 moves in a certain direction. The bottom end of the hollow frame 4 is fixed to an aluminum profile frame 7. The left and right outer walls of the aluminum profile frame 7 are equipped with gear-connecting rod type plate assemblies 8. A hydraulic shaft drive assembly 9 for inputting power to the gear-connecting rod type plate assembly 8 is installed on one side inside the aluminum profile frame 7. A hydraulic station 10 for providing hydraulic power to the hydraulic lifting assembly 3 and the hydraulic shaft drive assembly 9 is set at the top of the frame 1 on one side of the square beam 2. A control panel 11 that is electrically connected to the input end of the hydraulic station 10 is installed at the lower position of the surface of the square beam 2.

[0037] The bottom corners of the frame 1 are equipped with threaded feet and casters, which allow the equipment to be moved to different work positions or to work around large pipeline structures. It provides convenience when moving and a stable foundation is formed by locking the threaded feet during operation, ensuring that all subsequent precision adjustments are made on a shaky platform.

[0038] The hydraulic station 10 generates high-pressure oil through an oil pump, and distributes and regulates it through a precision valve group, such as a directional valve, a proportional valve, and a speed control valve, so that the hydraulic lifting assembly 3 can perform lifting operations and the hydraulic shaft drive assembly 9 and the gear connecting rod type disc assembly 8 can perform disc weight alignment calibration operations.

[0039] Example 2, based on Example 1, is... Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, the hydraulic lifting assembly 3 consists of a Z-axis hydraulic cylinder 301 and a back-sleeve slide 302. The Z-axis hydraulic cylinder 301 is parallel to the length direction of the square beam 2 and is fixed on one side of the outer wall of the square beam 2. The back-sleeve slide 302 is slidably installed on one side of the outer wall of the square beam 2 via a track, and the lower end of the back-sleeve slide 302 is fixedly connected to the upper end of the Z-axis hydraulic cylinder 301. Photoelectric sensor 1 303 and photoelectric sensor 2 304 are also installed on one side of the outer wall of the square beam 2 via a bracket. Photoelectric sensor 1 303 and photoelectric sensor 2 304 correspond to the upper end point and lower end point of the back-sleeve slide 302, respectively. The output ends of photoelectric sensor 1 303 and photoelectric sensor 2 304 are electrically connected to the input end of the control panel 11. The hollow frame 4 is installed on one side of the outer wall of the back-sleeve slide 302.

[0040] When using the hydraulic lifting assembly 3 to control the height of the heavy flange, the operator activates the Z-axis hydraulic cylinder 301 through the control panel 11. The Z-axis hydraulic cylinder 301 drives the back sleeve slide 302, hollow frame 4, key shaft type advance assembly 5, hydraulic docking assembly 6, aluminum profile frame 7, and gear connecting rod type plate assembly 8 to slide vertically, so as to quickly and accurately raise or lower the heavy flange to the required working height.

[0041] Photoelectric sensor 2 304 and photoelectric sensor 1 303 respectively detect the downward limit position and the upper and lower limit positions of the back sleeve slide 302 to ensure that the sliding distance of the back sleeve slide 302 is within the extension and retraction stroke range of the Z-axis hydraulic cylinder 301.

[0042] The keyed shaft type feed assembly 5 includes a spline shaft 501, a bushing 502, and an inner spline hollow shaft 503. The bushing 502 is fixed on one side outer wall of the hollow frame 4. The inner spline hollow shaft 503 is rotatably installed in the bushing 502. The spline shaft 501 is coaxially fitted inside the inner spline hollow shaft 503, and one end of the spline shaft 501 extends through to the outside of the bushing 502 and is bolted to one side outer wall of the chuck 504.

[0043] A support plate 505 is installed on the inner wall of the hollow frame 4 below the bushing 502. A handwheel shaft 506 is rotatably installed inside the support plate 505 via bearings. The axis of the handwheel shaft 506 is parallel to the inner spline hollow shaft 503. A sprocket 507 is fixed to one end of the handwheel shaft 506 and the outer circumference of the inner spline hollow shaft 503. A chain is installed between the two sprockets 507. By manually rotating the handwheel shaft 506, the handwheel shaft 506 drives the inner spline hollow shaft 503 in the bushing 502 to rotate via the sprocket 507 and the chain. The inner spline hollow shaft 503 drives the spline shaft 501, the chuck 504, and the heavy flange clamped by the chuck 504 to rotate, so as to achieve precise circumferential alignment of the flange bolt holes.

[0044] The hydraulic docking assembly 6 includes a hydraulic jack 601, a slide 602, and a straight-mouth shaft carrier 604. The hydraulic jack 601 is mounted on one outer wall of the back-sleeve slide 302, and the length direction of the hydraulic jack 601 is parallel to the length direction of the spline shaft 501. The slide 602 is slidably mounted on one inner wall of the hollow frame 4 via a track. The straight-mouth shaft carrier 604 is bolted to one outer wall of the slide 602. One end of the spline shaft 501 is rotatably connected to one outer wall of the straight-mouth shaft carrier 604 via a roller bearing. A vertical plate 603 is integrally formed on one side of the top of the slide 602. The piston rod end of the hydraulic jack 601 is fixedly connected to one outer wall of the vertical plate 603.

[0045] After the two flange holes are aligned, the operator manually operates the hydraulic jack 601 to drive the vertical plate 603, the slide 602, the straight shaft carrier 604, and the spline shaft 501 to move axially until the heavy flange clamped by the chuck 504 contacts the fixed end flange. During this process, the hydraulic jack 601 is responsible for providing uniform pressure when the flanges contact each other, ensuring good sealing between the flanges, and avoiding poor connection due to uneven pressure.

[0046] While ensuring that the splined shaft 501 and the hollow internal splined shaft 503 rotate in unison, they can also be driven by the hydraulic jack 601 to move the chuck 504 and flange at their ends forward or backward, facilitating the final docking trigger and clearance control.

[0047] Example 3, based on Example 2, by Figure 10 , Figure 11 , Figure 12 and Figure 13 As shown, the hydraulic shaft drive assembly 9 consists of a second hydraulic cylinder 901 and a second handle block 902. The second hydraulic cylinder 901 is hinged to one side of the inner wall of the aluminum profile frame 7 in an inclined manner. The piston rod of the second hydraulic cylinder 901 is fixed with a fisheye joint 9011, and the second handle block 902 is hinged to one side of the outer wall of the fisheye joint 9011. When the heavy-duty flange and the fixed end flange are aligned in a non-contact state, the operator starts the second hydraulic cylinder 901 through the control panel 11. The piston rod of the second hydraulic cylinder 901 gradually extends and uses the fisheye joint 9011 to force the second handle block 902 to drive the rotating shaft 805 to rotate, so that the gear connecting rod type disc assembly 8 can obtain hydraulic power input.

[0048] The gear-connecting rod type disc assembly 8 includes a rotating shaft 805 rotatably mounted on the left and right inner walls of the aluminum profile frame 7 via a vertical bearing seat, two longitudinal columns 801 fixedly mounted on the left and right outer walls of the aluminum profile frame 7, and a vertical arm 802 slidably mounted on the two longitudinal columns 801 on the same side. An inclined platform 803 is detachably mounted between the two vertical arms 802 on the same side. A gear unit 807 is fixed at one end of each of the two rotating shafts 805 near the hollow frame 4. The two gear units 807 are kept in mesh. A first handle block 806 is fixed at both ends of the surface of the rotating shaft 805. A connecting rod 804 is hinged to the upper end of the first handle block 806. One end of the connecting rod 804 is hinged to one side outer wall of the vertical arm 802. The upper end of the second handle block 902 is bolted to one of the rotating shafts 805.

[0049] The lower surface of the inclined table 803 is always higher than the upper surface of the aluminum profile frame 7. The chuck 504 is located between the two inclined tables 803. The top of the aluminum profile frame 7 below the chuck 504 is a gap. When one of the rotating shafts 805 rotates under the action of the hydraulic shaft drive assembly 9, the other rotating shaft 805 also maintains a synchronous reverse state under the transmission of the gear unit 807. When the second hydraulic cylinder 901 extends, the rotating shaft 805 drives the first handle block 806 to deflect towards the inside of the aluminum profile frame 7. That is, the first handle block 806 drives the vertical arm 802 and the inclined table 803 to move towards the direction of the rotating shaft 805 by the connecting rod 804. Then, both inclined tables 803 are close to the heavy flange and the fixed end flange. The inclined table 803 gradually corrects the heavy flange until the heavy flange and the fixed end flange surfaces coincide, thereby reducing subsequent assembly problems caused by misalignment.

[0050] The inside of the upright arm 802 has multiple through holes equidistantly arranged along its length. Spring positioning pins are fixed on the left and right outer walls of the inclined platform 803. The inclined platform 803 is fitted onto the two upright arms 802 on the same side and connected to the upright arms 802 through the spring positioning pins and through holes. Workers can quickly assemble the inclined platform 803 and the upright arm 802 using the through holes on the upright arm 802 and the spring positioning pins on the outer wall of the inclined platform 803. The inclined platform 803 can be installed at different height positions on the upright arm 802 through the spring positioning pins and through holes to adjust according to the specifications of heavy-duty flanges of different diameters.

[0051] In this embodiment, the heavy-duty flange to be connected is first securely mounted on the chuck 504 at the end of the keyshaft-type moving assembly 5 to complete the workpiece clamping. Then, the entire frame 1 of the equipment is driven to move it to the vicinity of the fixed-end flange that has been positioned. The operator starts the hydraulic station 10 through the control panel 11 to provide power to the various hydraulic cylinders in the equipment and operates the hydraulic lifting assembly 3. The hydraulic lifting assembly 3 drives the hollow frame 4 and the keyshaft-type moving assembly 5, chuck 504, and hydraulic docking assembly 6 on it. The aluminum profile frame 7 and the gear-connecting rod type disc assembly 8 are smoothly raised and lowered as a whole until the center height of the heavy-duty flange fixed by the chuck 504 is aligned with the center height of the fixed end flange, laying the foundation for subsequent fine adjustments. With the two flange faces not yet in contact and maintaining a safe clearance, the operator starts the hydraulic shaft drive assembly 9 via the control panel 11. The hydraulic shaft drive assembly 9 drives the gear-connecting rod type disc assembly 8 to begin working, and the gear-connecting rod type disc assembly 8 acts synchronously from both left and right sides on the heavy-duty flange. The assembly process begins with aligning the flanges at the fixed and extended ends until the two flanges, which might have initially been misaligned, are completely parallel and overlapped. After aligning the flanges, circumferential hole alignment continues. The operator uses the keyed shaft-type advance assembly 5, which causes the chuck 504 at the end and the clamped heavy-duty flange to rotate together, slowly rotating the heavy-duty flange until all bolt holes correspond one-to-one with the bolt holes on the fixed-end flange and are completely aligned. The operator then manually operates the hydraulic docking assembly 6, which generates a large and stable axial thrust to push the precisely aligned heavy-duty flange, secured by the chuck 504, smoothly and uniformly moving it towards the fixed-end flange along the corrected axis. After the sealing surfaces of the two flanges are evenly contacted and fully fitted, the hydraulic docking assembly 6 maintains a stable docking force. In the aligned state, the operator inserts all connecting bolts into the two flanges and initially tightens them. Once the mechanical connection is established, the operator unloads the equipment and resets each execution assembly, completing the entire assembly process.

[0052] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0053] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0054] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A hydraulic docking device for flange assembly, characterized in that: The vehicle includes a frame (1) with threaded feet and casters, a square beam (2) vertically fixed at the top of the frame (1), a hollow frame (4) slidably mounted on one side of the outer wall of the square beam (2) in the vertical direction, a keyed shaft type advance assembly (5) installed inside the hollow frame (4), and a chuck (504) installed on the drive end of the keyed shaft type advance assembly (5). The keyed shaft type advance assembly (5) causes the chuck (504) to rotate. A hydraulic lifting assembly (3) for controlling the height of the hollow frame (4) is installed on one side of the outer wall of the square beam (2). A device for driving the chuck (504) to advance along the axial direction is provided above the hollow frame (4). The hydraulic docking assembly (6) is movable. The bottom end of the hollow frame (4) is fixed with an aluminum profile frame (7). The left and right outer walls of the aluminum profile frame (7) are equipped with a gear connecting rod type plate assembly (8). A hydraulic shaft drive assembly (9) for inputting power to the gear connecting rod type plate assembly (8) is installed on one side inside the aluminum profile frame (7). A hydraulic station (10) for providing hydraulic power to the hydraulic lifting assembly (3) and the hydraulic shaft drive assembly (9) is set at the top of the frame (1) on one side of the square beam (2). A control panel (11) that is electrically connected to the input end of the hydraulic station (10) is installed at the lower position of the surface of the square beam (2).

2. The hydraulic docking equipment for flange assembly according to claim 1, characterized in that: The hydraulic lifting assembly (3) consists of a Z-axis hydraulic cylinder (301) and a back-sleeve slide (302). The Z-axis hydraulic cylinder (301) is parallel to the length direction of the square beam (2) and fixed on one side of the outer wall of the square beam (2). The back-sleeve slide (302) is slidably installed on one side of the outer wall of the square beam (2) via a track, and the lower end of the back-sleeve slide (302) is fixedly connected to the upper end of the Z-axis hydraulic cylinder (301). The upper part is also equipped with photoelectric sensor 1 (303) and photoelectric sensor 2 (304) by means of bracket. Photoelectric sensor 1 (303) and photoelectric sensor 2 (304) correspond to the upper end point and lower end point of the back sleeve slide (302) respectively. The output ends of photoelectric sensor 1 (303) and photoelectric sensor 2 (304) are electrically connected to the input end of the control panel (11). The hollow frame (4) is installed on one side of the outer wall of the back sleeve slide (302).

3. The hydraulic docking equipment for flange assembly according to claim 2, characterized in that: The keyed shaft type feed assembly (5) includes a spline shaft (501), a bushing (502), and an inner spline hollow shaft (503). The bushing (502) is fixed on one side of the outer wall of the hollow frame (4). The inner spline hollow shaft (503) is rotatably installed in the bushing (502). The spline shaft (501) is coaxially fitted inside the inner spline hollow shaft (503), and one end of the spline shaft (501) extends through to the outside of the bushing (502) and is bolted to one side of the outer wall of the chuck (504).

4. The hydraulic docking equipment for flange assembly according to claim 3, characterized in that: A support plate (505) is installed on the inner wall of the hollow frame (4) below the bushing (502). A handwheel shaft (506) is rotatably installed inside the support plate (505) through a bearing. The axis of the handwheel shaft (506) is parallel to the inner spline hollow shaft (503). A sprocket (507) is fixed at one end of the handwheel shaft (506) and on the outer circumference of the inner spline hollow shaft (503). A chain is installed between the two sprockets (507).

5. A hydraulic docking device for flange assembly according to claim 3, characterized in that: The hydraulic docking assembly (6) includes a hydraulic jack (601), a slide (602), and a straight-mouth shaft carrier (604). The hydraulic jack (601) is installed on one side of the outer wall of the back-sleeve slide (302), and the length direction of the hydraulic jack (601) is parallel to the length direction of the spline shaft (501). The slide (602) is slidably installed on one side of the inner wall of the hollow frame (4) via a track. The straight-mouth shaft carrier (604) is bolted to one side of the outer wall of the slide (602). One end of the spline shaft (501) is rotatably connected to one side of the outer wall of the straight-mouth shaft carrier (604) via a roller bearing.

6. A hydraulic docking device for flange assembly according to claim 5, characterized in that: A vertical plate (603) is integrally formed on one side of the top of the slide (602), and the piston rod end of the hydraulic jack (601) is fixedly connected to the outer wall of one side of the vertical plate (603).

7. A hydraulic docking device for flange assembly according to claim 1, characterized in that: The hydraulic shaft drive assembly (9) consists of a second hydraulic cylinder (901) and a second handle block (902). The second hydraulic cylinder (901) is hinged on one side of the inner wall of the aluminum profile frame (7) in an inclined manner. The piston rod of the second hydraulic cylinder (901) is fixed with a fisheye joint (9011), and the second handle block (902) is hinged on one side of the outer wall of the fisheye joint (9011).

8. A hydraulic docking device for flange assembly according to claim 7, characterized in that: The gear-connecting rod type disc assembly (8) includes a rotating shaft (805) rotatably mounted on the left and right inner walls of the aluminum profile frame (7) via a vertical bearing seat, two longitudinal columns (801) fixedly mounted on the left and right outer walls of the aluminum profile frame (7), and a vertical arm (802) slidably mounted on the two longitudinal columns (801) on the same side. An inclined platform (803) is detachably mounted between the two vertical arms (802) on the same side. A gear unit (807) is fixed at one end of each of the two rotating shafts (805) near the hollow frame (4). The two gear units (807) are meshed. A first handle block (806) is fixed at both ends of the surface of the rotating shaft (805). A connecting rod (804) is hinged to the upper end of the first handle block (806). One end of the connecting rod (804) is hinged to one side outer wall of the vertical arm (802). The upper end of the second handle block (902) is bolted to one of the rotating shafts (805).

9. A hydraulic docking device for flange assembly according to claim 8, characterized in that: The lower surface of the inclined platform (803) is always higher than the upper surface of the aluminum profile frame (7). The chuck (504) is located between the two inclined platforms (803). The top of the aluminum profile frame (7) below the chuck (504) is an empty part.

10. A hydraulic docking device for flange assembly according to claim 8, characterized in that: The interior of the upright arm (802) is provided with multiple through holes at equal intervals along the length direction. Spring positioning pins are fixed on the left and right outer walls of the inclined platform (803). The inclined platform (803) is fitted onto the two upright arms (802) on the same side and is connected to the upright arms (802) through the spring positioning pins and through holes.

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