Large diameter pipe installation handling device

Abstract

This utility model discloses a large-diameter pipe installation and handling device, including a mobile lifting frame for moving the pipe. The mobile lifting frame includes: four columns with rollers at the bottom, a horizontal beam plate fixedly connected to the four columns, a gripping mechanism for gripping the pipe wall, and a lifting mechanism for lifting the pipe. The lifting mechanism includes a lifting plate and a lifting drive mechanism for driving the lifting plate to move up and down. Two or more vertical guide columns are fixedly connected to the beam plate, extending downwards from the bottom of the beam plate. The lifting plate is located below the beam plate and has guide holes that slide with the guide columns. The lifting drive mechanism includes a fixed part and a movable part that moves relative to the fixed part. The lifting plate is fixedly connected to the movable part, and the beam plate is fixedly connected to the fixed part. The lower surface of the lifting plate has double slide rails with the axis in the front-back direction. The double slide rails face each other left and right. This utility model can lift and fix the pipe, achieving a hoisting function, thus enabling the handling of large-diameter pipes in situations where a crane is unavailable.

Description

Technical Field

[0001] This utility model relates to the field of pipeline construction technology, and in particular to a large-diameter pipeline installation and handling device. Background Technology

[0002] Currently, copper foil production plants involve complex electromechanical installations and numerous pipes, including large-diameter and ultra-thick pipes. Pipe transportation is a major challenge. Traditional handling and installation methods are gradually revealing problems such as low efficiency, high labor intensity, and high losses. There is an urgent need for innovative solutions, and we are considering inventing a large-diameter pipe installation and handling device.

[0003] Large-diameter pipes refer to pipes with a large diameter, widely used in industry, construction, and other fields. They are typically used to transport large quantities of liquids, gases, or solid materials, meeting the needs of engineering projects. These pipes can be made of materials such as steel, plastic, and fiberglass, possessing high load-bearing capacity and corrosion resistance. Currently, due to limited installation space, specialized equipment such as cranes cannot access the site. Existing pipe installation and handling equipment is often bulky, complex to operate, or still relies on auxiliary lifting equipment, making it difficult to use flexibly in confined spaces and presenting problems such as low efficiency, high cost, or safety risks. When using ordinary handling equipment such as forklifts, large-diameter pipes are prone to swaying, tilting, or even tipping over, requiring additional stabilization measures. Furthermore, forklift handling has site requirements; if the site is limited, such as in narrow transport routes, forklifts cannot be used. When using ordinary flatbed trolleys, due to the weight of large-diameter pipes, a crane is needed to lift them and place them on the trolley or unload them; in situations without a crane, handling is impossible. Summary of the Invention

[0004] This utility model provides a large-diameter pipe installation and handling device to solve the technical problems existing in the prior art.

[0005] The technical solution adopted by this utility model to solve the technical problems existing in the prior art is as follows:

[0006] A large-diameter pipe installation and handling device includes a mobile lifting frame for moving the pipe. The mobile lifting frame includes: four columns with rollers at the bottom, a horizontal frame fixed to the four columns, a gripping mechanism for gripping the pipe wall, and a lifting mechanism for lifting the pipe.

[0007] The lifting mechanism includes a lifting plate and a lifting drive mechanism for driving the lifting plate to move up and down; the horizontal frame is fixedly connected to two or more vertical guide columns, which extend downward from the bottom of the horizontal frame; the lifting plate is located below the horizontal frame and has guide holes that slide with the guide columns; the lifting drive mechanism includes a fixed part and a movable part that moves relative to the fixed part; the lifting plate is fixedly connected to the movable part, and the horizontal frame is fixedly connected to the fixed part; the lower surface of the lifting plate has double slide rails with the axis direction in the front-back direction; the double slide rails face each other left and right;

[0008] The gripping mechanism includes two sliders, two racks, a cylindrical gear, a first rotating mechanism for driving the cylindrical gear to rotate, and a clamping mechanism for clamping the tube wall from top to bottom.

[0009] The sliding surfaces of the two sliders are embedded in the slide rails and slide in cooperation with the slide rails. The two sliders are referred to as the first slider and the second slider, respectively. The front part of the first slider and the rear part of the second slider slide in cooperation with the double slide rails. The middle and rear parts of the first slider slide in cooperation with one of the slide rails. The front and middle parts of the second slider slide in cooperation with the other slide rail. The sides of the first slider and the second slider face each other from left to right. The two racks are fixedly connected to the left and right sides of the two sliders respectively, with their tooth surfaces facing each other. The cylindrical gear is located between the two racks and meshes with both racks. Clamping mechanisms are installed at the front end of the first slider and the rear end of the second slider. The two clamping mechanisms move back and forth or in opposite directions under the drive of the first rotating mechanism.

[0010] Furthermore, the lifting drive mechanism includes an electric cylinder, a hydraulic cylinder, or a screw jack.

[0011] Furthermore, the screw jack includes a gearbox, a lead screw, and a flange. The gearbox includes a housing and a worm gear located inside the housing. The worm gear is driven to rotate by a first motor or a first handwheel, and the inner cavity of the worm gear is provided with an internal thread that mates with the lead screw thread. The housing of the gearbox is fixedly connected to the horizontal frame, the lower end of the lead screw is fixedly connected to the flange, and the flange is fixedly connected to the lifting plate. The first motor or the first handwheel drives the worm gear to rotate, the worm gear drives the worm wheel to rotate at a reduced speed, and the worm wheel drives the lead screw to move up and down, thereby driving the lifting plate to move up and down.

[0012] Furthermore, the first rotating mechanism includes a horizontal rotating shaft and a vertical rotating shaft. A first bevel gear is fixedly connected to the horizontal rotating shaft, and a second bevel gear is fixedly connected to the vertical rotating shaft. The first bevel gear and the second bevel gear mesh with each other. A cylindrical gear is fixedly connected to the vertical rotating shaft. The horizontal rotating shaft is driven to rotate by a second motor or a second handwheel. The vertical rotating shaft is rotatably connected to the lifting plate through a first bearing. A side plate perpendicular to the lifting plate is fixedly connected to the side of the lifting plate, and the horizontal rotating shaft is rotatably connected to the side plate through a second bearing.

[0013] Furthermore, when the horizontal rotating shaft is driven by the second handwheel, the first rotating mechanism is provided with a first positioning pin for limiting the rotation of the horizontal rotating shaft; a plurality of positioning pin holes A are arranged circumferentially along the horizontal rotating shaft on the side plate surface opposite to the second handwheel, and a positioning pin hole B opposite to the positioning pin hole A is provided on the second handwheel. When the second handwheel rotates to the position, the first positioning pin passes through the positioning pin hole B of the second handwheel and is inserted into the positioning pin hole A on the side plate surface to fix the second handwheel; before the second handwheel rotates, the first positioning pin is pulled out.

[0014] Furthermore, each clamping mechanism includes two clamping plates arranged vertically and vertically, and a clamping drive mechanism for opening and closing the two clamping plates to clamp them together.

[0015] Furthermore, the clamping drive mechanism includes a clamping mounting bracket fixedly connected to the slider, a crank handle with a rotating shaft, and first, second, and third connecting rods; the two clamping plates are referred to as the upper clamping plate and the lower clamping plate, respectively. The lower surface of the upper clamping plate is hinged to one end of the first connecting rod, the other end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the second connecting rod is hinged to one end of the third connecting rod, and the other end of the third connecting rod is hinged to the upper surface of the lower clamping plate; the clamping mounting bracket has a bearing hole in its center, and a bearing is installed in the bearing hole. The outer ring of the bearing is fixedly connected to the clamping mounting bracket, and the inner ring of the bearing is fixedly connected to the rotating shaft of the crank handle. The rotating shaft of the crank handle is fixedly connected to the center of the second connecting rod. Both clamping plates are provided with U-shaped plugs at their ends. The clamping mounting bracket has a vertical strip hole for inserting the U-shaped plugs and guiding their movement direction. When the rotating shaft is rotated by the crank handle, the second connecting rod rotates, driving the first and third connecting rods to move, thereby driving the upper and lower clamping plates to move. At this time, the U-shaped plugs move up and down along the strip hole, thereby opening and closing the two clamping plates.

[0016] Furthermore, rubber pads are provided on the lower surface of the upper clamping plate and the upper surface of the lower clamping plate.

[0017] Furthermore, the clamping drive mechanism is provided with a second positioning pin for limiting the rotation of the crank handle's shaft; a plurality of positioning pin holes C are arranged circumferentially along the crank handle's shaft on the surface of the clamping mounting bracket opposite to the crank handle, and a positioning pin hole D opposite to the positioning pin holes C is provided on the crank handle or its shaft. When the crank handle is rotated to the position, the second positioning pin passes through the positioning pin hole D on the crank handle or its shaft and is inserted into the positioning pin hole C on the surface of the clamping mounting bracket to fix the crank handle; before the crank handle rotates, the second positioning pin is pulled out.

[0018] Furthermore, two sliders have balls embedded in their surfaces that slide in conjunction with the slide rails, and the slide rails are provided with ball guide grooves to guide the rolling direction of the balls.

[0019] The advantages and positive effects of this utility model are as follows: This utility model, by setting up a gripping mechanism for gripping the pipe wall and a lifting mechanism for lifting the pipe, realizes the gripping and lifting of pipes of different diameters, solving the problem of handling large-diameter pipes in situations where the transportation road space is narrow and there is no crane at the starting or unloading site.

[0020] In this invention, a horizontal rotating shaft and a vertical rotating shaft, along with two clamping mechanisms, are provided in the gripping mechanism. When the horizontal rotating shaft is driven to rotate, it sequentially drives the vertical rotating shaft to rotate via the first and second bevel gears, which in turn drive the cylindrical gear to rotate. When the cylindrical gear rotates forward, the first and second sliders move back and forth in opposite directions, causing the two clamping mechanisms to move back and forth in opposite directions to grip the pipe. When the cylindrical gear rotates in the reverse direction, the first and second sliders move back and forth in opposite directions, causing the two clamping mechanisms to move back and forth in opposite directions to release the pipe. The two clamping mechanisms are equipped with two clamping plates positioned vertically and vertically, and a clamping drive mechanism that opens and closes the two clamping plates to clamp the pipe. After the pipe is gripped, it is clamped by the two clamping plates of the two clamping mechanisms, thereby fixing the pipe and preventing the pipe from falling during movement, thus improving work safety.

[0021] In this invention, when the horizontal rotating shaft is driven by the second handwheel, the limiting function is achieved through the mutual cooperation between the second handwheel, the first positioning pin, positioning pin hole A, and positioning pin hole B. This prevents the support plate from rotating in the opposite direction due to the weight of the pipe, thus better gripping the pipe and improving safety.

[0022] In this invention, the clamping drive mechanism is provided with a second positioning pin for limiting the rotation of the crank handle's shaft. Through the mutual cooperation between the crank handle, the second positioning pin, the positioning pin hole C, and the positioning pin hole D, the limiting function is realized, preventing the two clamping plates set above and below from rotating the crank handle's shaft in the opposite direction due to the weight of the pipe. This allows for better clamping of the pipe and improves safety.

[0023] Rubber pads are provided on the lower surface of the upper clamping plate and the upper surface of the lower clamping plate. The rubber pads are elastic, which increases the friction and clamping force between the two clamping plates and the pipe wall.

[0024] The lifting mechanism in this invention, through the installation of a lifting plate and a lifting drive mechanism that drives the lifting plate to move up and down, can lift the pipe, thereby lifting the pipe off the ground and achieving a hoisting effect. This allows for the handling of large-diameter pipes even in situations where a crane is unavailable. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of a large-diameter pipe installation and handling device according to the present invention;

[0026] Figure 2This is a three-dimensional half-sectional structural diagram of a large-diameter pipe installation and handling device according to the present invention;

[0027] Figure 3 This is a schematic diagram of the main view of a large-diameter pipe installation and handling device according to the present invention;

[0028] Figure 4 A front view schematic diagram of a three-dimensional structure of a clamping mechanism in a large-diameter pipe installation and handling device;

[0029] Figure 5 A rear view of the three-dimensional structure of the clamping mechanism in a large-diameter pipe installation and handling device;

[0030] Figure 6 This is a schematic diagram of the gripping mechanism in a large-diameter pipe installation and handling device.

[0031] In the diagram: 1. Rotating shaft; 2. Crank handle; 3. Disc; 4. Vertical guide column; 5. First slider; 6. Lifting plate; 7. Worm gear drive shaft; 8. Gearbox; 9. Locating pin hole A; 10. First handwheel; 11. Horizontal frame; 12. Column; 13. Roller; 14. Second handwheel; 15. Horizontal rotating shaft; 16. Side plate; 17. Lower clamping plate; 18. Clamping mounting bracket; 19. Lead screw; 20. First bearing; 21. Flange; 22. Second slider; 23. Vertical strip hole; 24. Second locating pin; 25. First connecting rod; 26. Second connecting rod; 27. Third connecting rod; 28. Upper clamping plate; 28-1. U-shaped plug; 29. ​​Threaded hole; 30. Cylindrical gear; 31. First bevel gear; 32. Second bevel gear; 33. Rack; 34. Bolt; 35. Locating pin hole D. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0033] In the description of this utility model, the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected" and "linked" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a direct connection or an indirect connection through intermediate components; or an electrical connection or signal transmission. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0034] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0035] In the description of this utility model, the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected" and "linked" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a direct connection or an indirect connection through intermediate components; or an electrical connection or signal transmission. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0036] Please see Figures 1 to 6 A large-diameter pipe installation and handling device includes a mobile lifting frame for moving the pipe. The mobile lifting frame includes: four columns 12 with rollers 13 at the bottom, a horizontal frame 11 fixedly connected to the four columns 12, a gripping mechanism for gripping the pipe wall, and a lifting mechanism for lifting the pipe.

[0037] The lifting mechanism includes a lifting plate 6 and a lifting drive mechanism for driving the lifting plate 6 to rise and fall; the horizontal frame 11 is fixedly connected to two or more vertical guide columns 4, the vertical guide columns 4 extend downward from the bottom surface of the horizontal frame 11, the lifting plate 6 is located below the horizontal frame 11, and has guide holes that slide with the guide columns; the lifting drive mechanism includes a fixed part and a movable part that rises and falls relative to the fixed part, the lifting plate 6 is fixedly connected to the movable part, and the horizontal frame 11 is fixedly connected to the fixed part; the lower surface of the lifting plate 6 has double slide rails with the axis direction in the front-back direction; the double slide rails face each other left and right;

[0038] The gripping mechanism includes two sliders, two racks 33, a cylindrical gear 30, a first rotating mechanism for driving the cylindrical gear 30 to rotate, and a clamping mechanism for clamping the tube wall from top to bottom.

[0039] The sliding surfaces of the two sliders are embedded in the slide rails and slide in cooperation with the slide rails. The two sliders are referred to as the first slider 5 and the second slider 22, respectively. The front part of the first slider 5 and the rear part of the second slider 22 are both in cooperation with the double slide rails. The middle and rear parts of the first slider 5 are in cooperation with one of the slide rails. The front and middle parts of the second slider 22 are in cooperation with the other slide rail. The sides of the first slider 5 and the second slider 22 face each other from left to right. The two racks 33 are fixedly connected to the left and right sides of the two sliders respectively, with their tooth surfaces facing each other. The cylindrical gear 30 is located between the two racks 33 and meshes with both racks 33. Clamping mechanisms are installed at the front end of the first slider 5 and the rear end of the second slider 22. The two clamping mechanisms move back and forth or in opposite directions under the drive of the first rotating mechanism.

[0040] Preferably, a frame beam can also be provided between the columns 12 to strengthen the support of the columns 12. The horizontal frame 11 can be constructed by opening holes in the middle of the plate to reduce weight. The horizontal frame 11 and the columns 12 can be welded together to form a single unit.

[0041] Preferably, the lifting drive mechanism may include an electric cylinder, a hydraulic cylinder, or a screw jack.

[0042] Preferably, the screw jack may include a gearbox 8, a lead screw, and a flange 21. The gearbox 8 includes a housing and a worm gear located within the housing. The worm gear can be driven to rotate by a first motor or a first handwheel 10. The first motor or first handwheel 10 is connected to the worm gear via a worm gear drive shaft 7. The inner cavity of the worm gear is provided with an internal thread that engages with the lead screw thread. The housing of the gearbox 8 is fixedly connected to the horizontal frame 11, the lower end of the lead screw is fixedly connected to the flange 21, and the flange 21 is fixedly connected to the lifting plate 6. The first motor or first handwheel 10 drives the worm gear to rotate, and the internal thread of the worm gear engages with the external thread of the lead screw. The worm gear drives the worm gear to rotate at a reduced speed, and the worm gear drives the lead screw to move up and down, thereby driving the lifting plate 6 to move up and down.

[0043] The screw jack uses a worm gear to drive a worm wheel for speed reduction. The worm wheel has an internal thread structure in the middle, which is equivalent to the nut of the lifting screw and matches it. The lifting speed is equal to the input speed of the worm gear divided by the reduction ratio of the worm gear and worm wheel, and then multiplied by the pitch of the lifting screw.

[0044] Preferably, the first rotating mechanism may include a horizontal rotating shaft 15 and a vertical rotating shaft. The horizontal rotating shaft 15 may be fixedly connected to a first bevel gear 31, and the vertical rotating shaft may be fixedly connected to a second bevel gear 32. The first bevel gear 31 and the second bevel gear 32 mesh with each other. A cylindrical gear 30 is fixedly connected to the vertical rotating shaft. The horizontal rotating shaft 15 is driven to rotate by a second motor or a second handwheel 14. The vertical rotating shaft is rotatably connected to the lifting plate 6 through a first bearing 20. A side plate 16 perpendicular to the lifting plate 6 is fixedly connected to the side of the lifting plate 6, and the horizontal rotating shaft 15 is rotatably connected to the side plate 16 through a second bearing.

[0045] The lifting plate 6 may have a hole for a first bearing 20, in which a first bearing 20 is installed. A vertical rotating shaft is rotatably connected to the lifting plate 6 via the first bearing 20. The vertical rotating shaft is fixedly connected to the inner ring of the first bearing 20, and the lifting plate 6 is fixedly connected to the outer ring of the first bearing 20. A second bearing hole may be formed in the side plate 16, in which a second bearing is installed. A horizontal rotating shaft 15 is rotatably connected to the side plate 16 via the second bearing. The outer ring of the second bearing is fixedly connected to the side plate 16, and the inner ring of the second bearing is fixedly connected to the horizontal rotating shaft 15.

[0046] Alternatively, bearing seats can be installed on the lifting plate 6 and the side upright plate 16, with through holes made in the lifting plate 6 and the side upright plate 16. The vertical rotating shaft passes through the through hole in the lifting plate 6 and connects to the bearing seat on the lifting plate 6. The horizontal rotating shaft 15 passes through the through hole in the side upright plate 16 and connects to the bearing seat on the side upright plate 16.

[0047] Preferably, when the horizontal rotating shaft 15 is driven by the second handwheel 14, the first rotating mechanism may be provided with a first positioning pin for limiting the rotation of the horizontal rotating shaft 15; a plurality of positioning pin holes A9 are arranged circumferentially along the horizontal rotating shaft 15 on the surface of the side plate 16 opposite to the second handwheel 14, and a positioning pin hole B opposite to the positioning pin hole A9 is provided on the second handwheel 14. When the second handwheel 14 is rotated to the position, the first positioning pin passes through the positioning pin hole B of the second handwheel 14 and is inserted into the positioning pin hole A9 on the surface of the side plate 16 to fix the second handwheel 14; before the second handwheel 14 rotates, the first positioning pin is pulled out.

[0048] Preferably, each clamping mechanism may include two clamping plates arranged vertically and vertically, and a clamping drive mechanism for opening and closing the two clamping plates to clamp them together.

[0049] Preferably, the clamping drive mechanism may include a clamping mounting bracket 18 fixedly connected to the slider, a crank handle 2 with a rotating shaft 1, and first, second, and third connecting rods 27; the clamping mounting bracket 18 has a threaded hole 29, the slider has a through hole, and the bolt 34 passes through the through hole on the slider and is threadedly connected to the threaded hole 29 on the clamping mounting bracket 18.

[0050] The two clamping plates are referred to as the upper clamping plate 28 and the lower clamping plate 17, respectively. The lower surface of the upper clamping plate 28 is hinged to one end of the first connecting rod 25, the other end of the first connecting rod 25 is hinged to one end of the second connecting rod 26, the other end of the second connecting rod 26 is hinged to one end of the third connecting rod 27, and the other end of the third connecting rod 27 is hinged to the upper surface of the lower clamping plate 17. The clamping mounting bracket 18 has a bearing hole in its center, and a bearing is installed in the bearing hole. The outer ring of the bearing is fixedly connected to the clamping mounting bracket 18, and the inner ring of the bearing is fixedly connected to the rotating shaft 1 of the rocker handle 2. The rotating shaft 1 of the crank 2 is fixedly connected to the center of the second connecting rod 26. Both ends of the clamping plates are provided with U-shaped plugs 28-1. The clamping mounting bracket 18 is provided with a vertical strip hole 23 for inserting the U-shaped plug 28-1 and guiding its movement direction. When the rotating shaft 1 is rotated by the crank 2, the second connecting rod 26 rotates, driving the first connecting rod 25 and the third connecting rod 27 to move, thereby driving the upper clamping plate 28 and the lower clamping plate 17 to move. At this time, the U-shaped plug 28-1 moves up and down along the strip hole, thereby opening and closing the two clamping plates.

[0051] Preferably, both the lower surface of the upper clamping plate 28 and the upper surface of the lower clamping plate 17 may be provided with rubber pads.

[0052] Preferably, the clamping drive mechanism may be provided with a second positioning pin 24 for limiting the rotation of the shaft 1 of the handle 2; a plurality of positioning pin holes C are arranged circumferentially along the shaft 1 of the handle 2 on the surface of the clamping mounting bracket 18 opposite to the handle 2, and positioning pin holes D35 opposite to the positioning pin holes C are provided on the handle 2 or its shaft 1; a disc 3 may be fixed to the outside of the shaft 1, and positioning pin holes D35 are provided on the disc 3.

[0053] When the crank handle 2 is rotated to the position, the second positioning pin 24 passes through the positioning pin hole D35 on the crank handle 2 or its shaft 1 and is inserted into the positioning pin hole C on the surface of the clamping mounting bracket 18 to fix the crank handle 2; before the crank handle 2 is rotated, the second positioning pin 24 is pulled out.

[0054] Preferably, the two sliders can embed balls on the surfaces that slide in cooperation with the slide rail, and the slide rail can be provided with ball guide grooves to guide the rolling direction of the balls.

[0055] Both the first motor driving the worm gear and the second motor driving the horizontal rotating shaft 15 can be finite torque motors. A finite torque motor is a servo motor whose stator windings are energized with DC current and whose rotor directly drives the load within a limited angle. It features a small electromechanical time constant and large angular acceleration. When combined with sensors, it forms a position servo system with high output torque and high positioning accuracy.

[0056] The working principle of this utility model:

[0057] A large-diameter pipe installation and handling device includes a mobile lifting frame for moving the pipe. The mobile lifting frame includes: four columns 12 with rollers 13 at the bottom, a horizontal frame 11 fixedly connected to the four columns 12, a gripping mechanism for gripping the pipe wall, and a lifting mechanism for lifting the pipe. By setting up the gripping mechanism for gripping the pipe wall and the lifting mechanism for lifting the pipe, the device can grip and lift pipes of different diameters, solving the problem of handling large-diameter pipes in situations where the transportation road space is narrow or there is no crane at the starting or unloading site.

[0058] The lifting mechanism includes a lifting plate 6 and a lifting drive mechanism for driving the lifting plate 6 to rise and fall; two or more vertical guide columns 4 are fixedly connected to the horizontal frame 11, the vertical guide columns 4 extend downward from the bottom surface of the horizontal frame 11, the lifting plate 6 is located below the horizontal frame 11, and has guide holes that slide with the guide columns; the lifting drive mechanism includes a fixed part and a movable part that rises and falls relative to the fixed part, the lifting plate 6 is fixedly connected to the movable part, and the horizontal frame 11 is fixedly connected to the fixed part; the lower surface of the lifting plate 6 has double slide rails with the axis direction in the front-back direction; the double slide rails face each other left and right; the vertical guide columns 4 are used to make the lifting plate 6 move up and down along the vertical guide columns 4 under the action of the lifting drive mechanism, thereby driving the pipe to rise and fall.

[0059] The gripping mechanism includes two sliders, two racks 33, a cylindrical gear 30, a first rotating mechanism for driving the cylindrical gear 30 to rotate, and a clamping mechanism for clamping the tube wall from top to bottom. The sliding surfaces of the two sliders are embedded in the slide rails and slide in cooperation with the slide rails. The two sliders are referred to as the first slider 5 and the second slider 22, respectively. The front part of the first slider 5 and the rear part of the second slider 22 slide in cooperation with the double slide rails. The middle and rear parts of the first slider 5 slide in cooperation with one of the slide rails. The front and middle parts of the second slider 22 slide in cooperation with the other slide rail. The sides of the first slider 5 and the second slider 22 face each other from left to right. The two racks 33 are fixed to the left and right sides of the two sliders respectively, with their tooth surfaces facing each other. The cylindrical gear 30 is located between the two racks 33 and meshes with both racks 33. The clamping mechanism is installed at the front end of the first slider 5 and the rear end of the second slider 22. The two clamping mechanisms move back and forth or in opposite directions under the drive of the first rotating mechanism.

[0060] By incorporating a horizontal rotating shaft 15, a vertical rotating shaft, and two clamping mechanisms into the gripping mechanism, when the horizontal rotating shaft 15 is driven to rotate, it sequentially drives the vertical rotating shaft to rotate via the first bevel gear 31 and the second bevel gear 32, which in turn drives the cylindrical gear 30 to rotate. When the cylindrical gear 30 rotates forward, the first slider 5 and the second slider 22 move back and forth in opposite directions, causing the two clamping mechanisms to move back and forth in opposite directions to grip the pipe. When the cylindrical gear 30 rotates in the reverse direction, the first slider 5 and the second slider 22 move back and forth in opposite directions, causing the two clamping mechanisms to move back and forth in opposite directions to release the pipe. The two clamping mechanisms are equipped with two clamping plates positioned vertically and vertically, and a clamping drive mechanism that opens and closes the two clamping plates to clamp the pipe. After the pipe is gripped, it is clamped by the two clamping plates positioned vertically and vertically within the two clamping mechanisms.

[0061] When the gripping mechanism is working, the two clamping mechanisms move back and forth in opposite directions, positioning them at both ends of the pipe; the two clamping plates within the same clamping mechanism move up and down in opposite directions; then, the two clamping mechanisms move back and forth towards each other, so that one clamping plate of the same clamping mechanism is inside the pipe and the other is outside; finally, the two clamping plates move up and down towards each other to clamp the pipe wall. The pipe receives a horizontal clamping force, and the pipe wall experiences a vertical clamping force, thus fixing the pipe.

[0062] After the pipe is clamped at both ends by the front and rear clamping mechanisms, the lifting mechanism is activated. Driven by the lifting drive mechanism, the lifting plate 6 moves up and down under the guidance of the vertical guide column 4, thereby realizing the lifting of the pipe. When it is necessary to transport the pipe, the pipe is lifted off the ground, and then the mobile crane is moved. It can be moved manually, pulled by other small traction devices, or driven by a motor installed in the rollers 13. When it is necessary to unload the pipe, the pipe can be lowered to the ground, and then the two clamping plates move up and down in opposite directions to loosen the pipe wall. Then, the two clamping mechanisms move back and forth in opposite directions to release the pipe and remove the crane.

[0063] The aforementioned rotating shaft 1, crank handle 2, disc 3, vertical guide column 4, first slider 5, lifting plate 6, electric cylinder, hydraulic cylinder, screw jack, worm gear drive shaft 7, reduction gearbox 8, first handwheel 10, horizontal frame 11, column 12, roller 13, second handwheel 14, horizontal rotating shaft 15, side upright plate 16, lower clamping plate 17, first bearing 20, flange 21, second slider 22, vertical strip hole 23, second positioning pin 24, first connecting rod 25, second connecting rod 26, third connecting rod 27, upper clamping plate 28, U-shaped plug 28-1, cylindrical gear 30, first bevel gear 31, second bevel gear 32, rack 33, bolt 34, positioning pin hole D35, first motor, second motor, limited angle torque motor, etc., can all adopt applicable devices and structures in the prior art, or adopt devices and structures in the prior art and construct them using conventional technical means.

[0064] The embodiments described above are only used to illustrate the technical ideas and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. The patent scope of this utility model should not be limited by these embodiments. That is, any equivalent changes or modifications made to the spirit disclosed in this utility model still fall within the patent scope of this utility model.

Claims

1. A large-diameter pipe installation and handling device, characterized in that, The mobile crane includes a mobile crane frame for transferring pipelines. The mobile crane frame includes: four columns with rollers at the bottom, a horizontal frame fixed to the four columns, a gripping mechanism for gripping the pipeline wall, and a lifting mechanism for lifting the pipeline. The lifting mechanism includes a lifting plate and a lifting drive mechanism for driving the lifting plate to move up and down; the horizontal frame is fixedly connected to two or more vertical guide columns, which extend downward from the bottom of the horizontal frame; the lifting plate is located below the horizontal frame and has guide holes that slide with the guide columns; the lifting drive mechanism includes a fixed part and a movable part that moves relative to the fixed part; the lifting plate is fixedly connected to the movable part, and the horizontal frame is fixedly connected to the fixed part; the lower surface of the lifting plate has double slide rails with the axis direction in the front-back direction; the double slide rails face each other left and right; The gripping mechanism includes two sliders, two racks, a cylindrical gear, a first rotating mechanism for driving the cylindrical gear to rotate, and a clamping mechanism for clamping the tube wall from top to bottom. The sliding surfaces of the two sliders are embedded in the slide rails and slide in cooperation with the slide rails. The two sliders are referred to as the first slider and the second slider, respectively. The front part of the first slider and the rear part of the second slider slide in cooperation with the double slide rails. The middle and rear parts of the first slider slide in cooperation with one of the slide rails. The front and middle parts of the second slider slide in cooperation with the other slide rail. The sides of the first slider and the second slider face each other from left to right. The two racks are fixedly connected to the left and right sides of the two sliders respectively, with their tooth surfaces facing each other. The cylindrical gear is located between the two racks and meshes with both racks. Clamping mechanisms are installed at the front end of the first slider and the rear end of the second slider. The two clamping mechanisms move back and forth or in opposite directions under the drive of the first rotating mechanism.

2. The large-diameter pipe installation and handling device according to claim 1, characterized in that, The lifting drive mechanism includes electric cylinders, hydraulic cylinders, or screw jacks.

3. The large-diameter pipe installation and handling device according to claim 2, characterized in that, The screw jack includes a gearbox, a lead screw, and a flange. The gearbox includes a housing and a worm gear located inside the housing. The worm gear is driven to rotate by a first motor or a first handwheel. The inner cavity of the worm gear is provided with an internal thread that mates with the lead screw thread. The housing of the gearbox is fixedly connected to a horizontal frame, the lower end of the lead screw is fixedly connected to the flange, and the flange is fixedly connected to the lifting plate. The first motor or the first handwheel drives the worm gear to rotate, the worm gear drives the worm wheel to rotate at a reduced speed, and the worm wheel drives the lead screw to move up and down, thereby driving the lifting plate to move up and down.

4. The large-diameter pipe installation and handling device according to claim 1, characterized in that, The first rotating mechanism includes a horizontal rotating shaft and a vertical rotating shaft. A first bevel gear is fixedly connected to the horizontal rotating shaft, and a second bevel gear is fixedly connected to the vertical rotating shaft. The first bevel gear and the second bevel gear mesh with each other. A cylindrical gear is fixedly connected to the vertical rotating shaft. The horizontal rotating shaft is driven to rotate by a second motor or a second handwheel. The vertical rotating shaft is rotatably connected to the lifting plate through a first bearing. A side plate perpendicular to the lifting plate is fixedly connected to the side of the lifting plate, and the horizontal rotating shaft is rotatably connected to the side plate through a second bearing.

5. The large-diameter pipe installation and handling device according to claim 4, characterized in that, When the horizontal rotating shaft is driven by the second handwheel, the first rotating mechanism is provided with a first positioning pin for limiting the rotation of the horizontal rotating shaft; a plurality of positioning pin holes A are arranged circumferentially along the horizontal rotating shaft on the side plate surface opposite to the second handwheel, and a positioning pin hole B opposite to the positioning pin hole A is provided on the second handwheel. When the second handwheel rotates to the position, the first positioning pin passes through the positioning pin hole B of the second handwheel and is inserted into the positioning pin hole A on the side plate surface to fix the second handwheel; before the second handwheel rotates, the first positioning pin is pulled out.

6. The large-diameter pipe installation and handling device according to claim 1, characterized in that, Each clamping mechanism includes two clamping plates arranged vertically and vertically, and a clamping drive mechanism that opens and closes the two clamping plates to clamp them together.

7. The large-diameter pipe installation and handling device according to claim 6, characterized in that, The clamping drive mechanism includes a clamping mounting bracket fixed to the slider, a crank handle with a rotating shaft, and first, second, and third connecting rods. The two clamping plates are referred to as the upper clamping plate and the lower clamping plate, respectively. The lower surface of the upper clamping plate is hinged to one end of the first connecting rod, the other end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the second connecting rod is hinged to one end of the third connecting rod, and the other end of the third connecting rod is hinged to the upper surface of the lower clamping plate. The clamping mounting bracket has a bearing hole in its center, and a bearing is installed in the bearing hole. The outer ring of the bearing is fixed to the clamping mounting bracket, and the inner ring of the bearing is fixed to the rotating shaft of the crank handle. The rotating shaft of the crank handle is fixed to the center of the second connecting rod. Both clamping plates have U-shaped plugs at their ends. The clamping mounting bracket has vertical strip holes for inserting the U-shaped plugs and guiding their movement. When the rotating shaft is rotated by the crank handle, the second connecting rod rotates, driving the first and third connecting rods to move, thereby driving the upper and lower clamping plates to move. At this time, the U-shaped plugs move up and down along the strip holes, thereby opening and closing the two clamping plates.

8. The large-diameter pipe installation and handling device according to claim 7, characterized in that, Rubber pads are provided on the lower surface of the upper clamping plate and the upper surface of the lower clamping plate.

9. The large-diameter pipe installation and handling device according to claim 7, characterized in that, The clamping drive mechanism is provided with a second positioning pin for limiting the rotation of the crank handle's shaft; a plurality of positioning pin holes C are arranged circumferentially along the crank handle's shaft on the surface of the clamping mounting bracket opposite to the crank handle, and a positioning pin hole D opposite to the positioning pin hole C is provided on the crank handle or its shaft. When the crank handle is rotated to the position, the second positioning pin passes through the positioning pin hole D on the crank handle or its shaft and is inserted into the positioning pin hole C on the surface of the clamping mounting bracket to fix the crank handle; before the crank handle rotates, the second positioning pin is pulled out.

10. The large-diameter pipe installation and handling device according to claim 1, characterized in that, Two sliders have balls embedded in their surfaces that slide in conjunction with the slide rails, and the slide rails are provided with ball guide grooves that guide the rolling direction of the balls.

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