Non-vertical space large rectangular top pipe hoisting device and hoisting method thereof

Abstract

This invention discloses a hoisting device and method for large rectangular jacking pipes in non-vertical space. The hoisting device includes two U-shaped main lifting beams, four lifting lugs, two limiting pins, and two telescopic anti-rotation crossbeams. The two U-shaped main lifting beams are vertically arranged and welded parallel to each other. The four lifting lugs are fixed in pairs to the top surface of each U-shaped main lifting beam. The two limiting pins are horizontally arranged and fixed to the inner walls of the vertical sections of the two U-shaped main lifting beams. The fixed ends of the two telescopic anti-rotation crossbeams are fixedly connected to the lower horizontal sections of the two U-shaped main lifting beams. This invention's large rectangular jacking pipe hoisting device has a small overall size, stable structure, and requires no excessively large vertical hoisting space during installation. It is simple and quick to install and dismantle large rectangular jacking pipes, reusable, and has a long service life.

Description

Technical Field

[0001] This invention relates to the field of rectangular pipe jacking construction technology, specifically a non-vertical space large rectangular pipe jacking hoisting device and its hoisting method. Background Technology

[0002] With urban development, rectangular pipe jacking technology is widely used in underground pedestrian crossings and subway entrances to minimize the impact on surface traffic and pipelines. Due to its unique advantages in urban construction, rectangular pipe jacking technology is being used more and more widely. Currently, large rectangular pipes are all prefabricated in factories, transported to the site as a whole, and vertically hoisted into the shaft using a rigid spreader beam.

[0003] Due to the large dimensions of the rectangular pipe sections in large rectangular pipe jacking projects, sufficient space must be reserved in both length and width directions in the working shaft structure to meet the requirements of the spreader-beam type hoisting and jacking. This reserved space must be symmetrically arranged along the vertical axis of the rectangular pipe section to meet the requirements of vertical hoisting and jacking. However, due to the influence of special equipment and structures, the hoisting space is limited, and the reserved space is prone to deviating from the axis of the rectangular pipe section. Using the traditional spreader-beam type hoisting method, large rectangular pipe jacking projects cannot be hoisted to the intended position. It is necessary to dismantle the completed structure to provide space for hoisting, and then restore it after the pipe jacking is completed, resulting in serious cost waste, low construction efficiency, and easy damage to the structure. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a hoisting device and method for large rectangular jacking pipes in non-vertical space, which solves the problem of hoisting rectangular pipe sections of large rectangular jacking pipes in non-vertical space, realizes safe and fast hoisting and lowering into the well, reduces the working space for hoisting large rectangular jacking pipes, and does not require disassembly of the structure when connecting and separating from the rectangular pipe sections, thereby reducing costs and improving construction efficiency.

[0005] The technical solution of this invention is as follows:

[0006] A non-vertical space large rectangular pipe jacking hoisting device includes two U-shaped main lifting beams, multiple connecting crossbeams, four lifting lugs, two limiting pins, and two telescopic anti-rotation crossbeams. The two U-shaped main lifting beams are both vertically arranged and parallel to each other. Each U-shaped main lifting beam includes an upper horizontal part and a lower horizontal part that are parallel to each other, as well as a vertical part connecting the upper horizontal part and the lower horizontal part. The top of the lower horizontal part of both U-shaped main lifting beams is fixed with an upwardly extending limiting plate.

[0007] The two U-shaped main lifting beams are fixed together by welding multiple connecting crossbeams, and four lifting lugs are fixed in pairs to the top surfaces of the horizontal portions of each U-shaped main lifting beam.

[0008] The two limiting pins are both horizontally set and fixed to the inner walls of the vertical parts of the two U-shaped main lifting beams respectively. The two limiting pins are set at the same horizontal height and both extend horizontally into the U-shaped groove of the corresponding U-shaped main lifting beam.

[0009] The fixed ends of the two telescopic anti-spin beams are respectively fixedly connected to the lower horizontal parts of the two U-shaped main lifting beams, and the telescopic ends of the two telescopic anti-spin beams extend outward to the lower horizontal parts of the two U-shaped main lifting beams.

[0010] The two U-shaped main lifting beams are hinged to the lower horizontal portion and near the ends of each of the two main lifting beams. The rotation range of the rotating beams is the range between the rotating beams and the lower horizontal portion of the U-shaped main lifting beams, which are coaxial, and rotate 90 degrees outward from the lower horizontal portion of the U-shaped main lifting beams. The top of the outer ends of the two rotating beams are fixed with the limiting plates.

[0011] Both U-shaped main lifting beams are rectangular hollow steel sections with U-shaped bends, and end reinforcing plates are welded to both ends of the two U-shaped main lifting beams; L-shaped reinforcing plates are welded to the L-shaped bends of the upper horizontal and vertical sections and the lower horizontal and vertical sections of each U-shaped main lifting beam.

[0012] The multiple connecting beams are respectively fixedly connected between the upper horizontal portions of the two U-shaped main lifting beams and between the lower horizontal portions of the two U-shaped main lifting beams.

[0013] Each of the four lifting lugs includes two lifting connecting plates and a lug with a lug hole. The two lifting connecting plates are vertically arranged and parallel to each other. The bottom ends of the two lifting connecting plates are welded and fixed to the top surface of the horizontal end of the U-shaped main lifting beam. The lug is vertically arranged and perpendicular to the two lifting connecting plates. The bottom end of the lug is inserted into the two lifting connecting plates and welded and fixed to the two lifting connecting plates.

[0014] The two telescopic anti-rotation crossbeams are each fitted with a crossbeam connecting plate. The two crossbeam connecting plates are respectively attached to the lower horizontal part of the two U-shaped main lifting beams and are fixedly connected to the lower horizontal part of the corresponding U-shaped main lifting beams by bolts.

[0015] The lower horizontal portion of the two U-shaped main lifting beams is welded and fixed with positioning connecting plates at its bottom and top. The length of the two positioning connecting plates on the lower horizontal portion of each U-shaped main lifting beam is greater than the length of the lower horizontal portion of the U-shaped main lifting beam, that is, an installation gap is formed between the outer ends of the two positioning connecting plates. Among the two positioning connecting plates, the lower positioning connecting plate is fixed with a positioning pin at its top. The inner end of each rotating lifting beam is placed in the installation gap between the corresponding two positioning connecting plates and is hinged to the two positioning connecting plates through a hinge post positioned on the positioning pin.

[0016] The limiting plate is an L-shaped limiting plate. The thickness of the horizontal part of the L-shaped limiting plate is the same as the thickness of the positioning connecting plate on the top surface of the horizontal part of the U-shaped main lifting beam. The horizontal part of the L-shaped limiting plate is welded and fixed to the rotating lifting beam. The inner end of the horizontal part of the L-shaped limiting plate is connected to the outer end of the lower positioning connecting plate. The vertical part of the L-shaped limiting plate is located on the outer end of the rotating lifting beam.

[0017] The positioning connecting plate on the top surface of the lower horizontal part of the U-shaped main lifting beam has an arc-shaped chamfered angle between its outer long side and outer wide side, and a right-angled angle between its inner long side and outer wide side. The two edges of the horizontal part of the L-shaped limiting plate are both right-angled, so that the rotation range of the rotating lifting beam is the range between the rotating lifting beam and the lower horizontal part of the U-shaped main lifting beam being coaxially positioned and rotating 90 degrees outward from the lower horizontal part of the U-shaped main lifting beam.

[0018] A method for hoisting a large rectangular pipe jacking device in a non-vertical space specifically includes the following steps:

[0019] (1) Transport the finished rectangular pipe sections to the construction site and stack them vertically;

[0020] (2) The large rectangular jacking pipe hoisting device is lifted and positioned by a crawler crane. The positioning direction is consistent with the jacking direction of the rectangular pipe section, so that the limiting plates on the two U-shaped main lifting beams are located in front of the front end face of the rectangular pipe section, and the two limiting pins are inserted into the reserved holes on the horizontal part of the rectangular pipe section.

[0021] (3) Adjust the length of the two telescopic anti-rotation beams according to the width of the inner ring of the rectangular pipe section, so that the outer ends of the two telescopic anti-rotation beams abut against the two inner corners of the top of the inner ring of the rectangular pipe section. Then fix the telescopic section and the fixed section of the telescopic anti-rotation beams to lock the distance between the outer ends of the two telescopic anti-rotation beams, so that the rectangular pipe section is installed in the center on the large rectangular jacking pipe hoisting device.

[0022] (4) The crawler crane is connected to the four lifting lugs of the large rectangular pipe jacking device through steel wire rope. The crawler crane lifts and transports the rectangular pipe section to the lifting working shaft and slowly lowers it. When the horizontal height of the top of the rectangular pipe section is lower than the horizontal height of the bottom surface of the main structure of the reserved jacking opening, the rectangular pipe section is moved horizontally to make its axis overlap with the design jacking axis. Then, with the cooperation of the crawler crane, the rectangular pipe section moves horizontally and longitudinally along the axis of the reserved jacking opening to the design jacking plane position and slowly lowers to the design jacking height.

[0023] (5) After the rectangular pipe section is hoisted to the designed jacking position, the locking connection structure of the two telescopic anti-rotation beams is disassembled and the telescopic anti-rotation beams are shortened so that the outer ends of the two telescopic anti-rotation beams are separated from the inner ring of the rectangular pipe section. Then, the crawler crane drives the large rectangular pipe hoisting device to move horizontally in the opposite direction of jacking, so that the limit pin is separated from the reserved hole on the rectangular pipe section. The crawler crane then drives the rectangular pipe section to slowly descend a certain distance, so that the limit plates on the two U-shaped main lifting beams move to the horizontal position below the rectangular pipe section. Then, by using the rotation of the crawler crane and the traction of the traction rope, the large rectangular pipe hoisting device is completely separated from the rectangular pipe section. The large rectangular pipe hoisting device is then hoisted out of the working well to the ground, thus completing one cycle of the rectangular pipe section hoisting operation.

[0024] Advantages of this invention:

[0025] (1) The two U-shaped main lifting beams of the present invention are fixed by welding multiple connecting crossbeams, and lifting ear plates are provided at the four corners of the top, thereby forming an integral lifting beam structure of a certain width, which ensures that the large rectangular jacking pipe section is subjected to uniform force during lifting and achieves safe and stable lifting operation.

[0026] (2) The present invention connects a rotating beam to the bottom end of the U-shaped main lifting beam. The rotating beam can be rotated and adjusted by 90 degrees, which can extend the support part of the U-shaped main lifting beam. Different lengths of rotating beams can be connected according to the hoisting requirements of rectangular pipe sections of different lengths.

[0027] (3) The present invention provides two symmetrical limiting pins on the vertical part of the two U-shaped main lifting beams. The two limiting pins can realize the positioning of the lifting device on the rectangular tube section and prevent the rectangular tube section from shifting in the width direction during the lifting process, so as to make the lifting operation safe and stable.

[0028] (4) The present invention connects telescopic anti-rotation crossbeams to the bottom ends of two U-shaped main lifting beams. The telescopic anti-rotation crossbeams are easy to extend and adjust so that they are locked with the inner ring of the rectangular pipe section, preventing the rectangular pipe section from rotating during the hoisting process and ensuring the stability of the rectangular pipe section hoisting. At the same time, the length can be adjusted according to the rectangular pipe section of different widths, and the application range is wide.

[0029] (5) Both U-shaped main lifting beams of the present invention are hollow steel structures, which greatly reduces the overall weight of the lifting device and reduces the processing cost. In addition, L-shaped reinforcing plates are welded at the L-shaped bends of the horizontal and vertical parts and the L-shaped bends of the lower horizontal and vertical parts of each U-shaped main lifting beam. End reinforcing plates are welded at both ends of each U-shaped main lifting beam, which greatly enhances the strength of the main lifting beam and avoids the problem of deformation of the main lifting beam during the lifting process.

[0030] (6) The lower horizontal part of the U-shaped main lifting beam of the present invention is welded with a positioning connecting plate, and a positioning pin is fixed on the lower positioning connecting plate, so that the inner end of the rotating lifting beam is accurately positioned and connected between the two positioning connecting plates through the hinge column; and an L-shaped limiting plate is welded to the top of the rotating lifting beam. The horizontal part of the L-shaped limiting plate is consistent with the thickness of the lower positioning connecting plate, so that the support surface height of the rectangular pipe section is consistent, improving the stability of the rectangular pipe section support structure. In addition, the vertical part of the L-shaped limiting plate can block and limit the rectangular pipe section after it tilts during hoisting, preventing the rectangular pipe section from slipping and falling, and further improving the safety of the rectangular pipe section hoisting.

[0031] The large rectangular jacking pipe hoisting device of this invention has a small overall size and stable structure. During hoisting, there is no need to reserve a large vertical hoisting space. It is simple and quick to install and dismantle with large rectangular jacking pipes. It does not require partial structural disassembly during use, can be reused, and has a long service life. Attached Figure Description

[0032] Figure 1 This is a perspective view of the non-vertical space large rectangular jacking pipe hoisting device of the present invention.

[0033] Figure 2 This is a side view of the non-vertical space large rectangular jacking pipe hoisting device of the present invention.

[0034] Figure 3 This is an exploded view of the U-shaped main lifting beam and rotating lifting beam of the present invention.

[0035] Figure 4 This is a schematic diagram of the non-vertical space large rectangular jacking pipe hoisting device of the present invention for hoisting rectangular pipe sections.

[0036] Figure 5 This is a plan view of the rectangular pipe section of the present invention being hoisted into the working well.

[0037] Figure 6 This is a cross-sectional view of the rectangular pipe section of the present invention being hoisted into the working well.

[0038] Figure 7 This is a plan view of the rectangular tube section hoisting, moving, and positioning according to the present invention.

[0039] Figure 8 This is a cross-sectional view of the rectangular tube section hoisting, moving, and positioning according to the present invention.

[0040] Reference numerals: 1-U-shaped main lifting beam, 101-end reinforcing plate, 102-L-shaped reinforcing plate, 2-connecting crossbeam, 3-lifting ear plate, 301-lifting connecting plate, 302-ear plate, 4-limiting pin, 5-rotating lifting beam, 6-telescopic anti-rotation crossbeam, 7-positioning connecting plate, 8-positioning pin, 9-hinged column, 10-L-shaped limiting plate, 11-crossbeam connecting plate, 12-bolt, 01-rectangular pipe section, 02-reserved hole, 03-working well, 04-crawler crane, 05-main structure. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] See Figures 1-3 A non-vertical space large rectangular jacking pipe hoisting device includes two U-shaped main lifting beams 1, three connecting crossbeams 2, four lifting ear plates 3, two limiting pins 4, two rotating lifting beams 5, and two telescopic anti-rotation crossbeams 6. The two U-shaped main lifting beams 1 are both vertically arranged and parallel to each other. Each U-shaped main lifting beam 1 includes an upper horizontal part and a lower horizontal part that are parallel to each other, as well as a vertical part connecting the upper horizontal part and the lower horizontal part. Both U-shaped main lifting beams 1 are rectangular hollow steel sections with U-shaped bends. Both ends of the two U-shaped main lifting beams 1 are welded with end reinforcing plates 101. L-shaped reinforcing plates 102 are welded to the L-shaped bends of the upper horizontal part and the vertical part, and the L-shaped bends of the lower horizontal part and the vertical part of each U-shaped main lifting beam 1.

[0043] Of the three connecting beams 2, two connecting beams 2 are fixedly connected between the two ends of the upper horizontal part of the two U-shaped main lifting beams 1, and the other connecting beam 2 is fixedly connected between the lower horizontal part of the two U-shaped main lifting beams 1, so that the two U-shaped main lifting beams 1 form an integral lifting beam structure.

[0044] Four lifting lugs 3 are fixed in pairs to the top surface of the horizontal section at both ends of each U-shaped main lifting beam 1. Each lifting lug 3 includes two lifting connecting plates 301 and a lug 302 with lug holes. The two lifting connecting plates 301 are vertically arranged and parallel to each other. The bottom ends of the two lifting connecting plates 301 are welded and fixed to the top surface of the horizontal section end of the U-shaped main lifting beam 1. The lug 302 is vertically arranged and perpendicular to the two lifting connecting plates 301. The bottom end of the lug 302 is inserted into the two lifting connecting plates 301 and welded and fixed to the two lifting connecting plates 301.

[0045] Both limiting pins 4 are horizontally set and fixed to the inner wall of the vertical part of the two U-shaped main lifting beams 1 respectively. The two limiting pins 4 are set at the same horizontal height and extend horizontally into the U-shaped groove of the corresponding U-shaped main lifting beam 1.

[0046] Positioning connecting plates 7 are welded and fixed to the bottom and top of the lower horizontal part of the two U-shaped main lifting beams 1. The length of the two positioning connecting plates 7 on the lower horizontal part of each U-shaped main lifting beam 1 is greater than the length of the lower horizontal part of the U-shaped main lifting beam 1, that is, an installation gap is formed between the outer ends of the two positioning connecting plates 7. Among the two positioning connecting plates 7, the lower positioning connecting plate 7 has a positioning pin 8 fixed to its top. The inner end of each rotating lifting beam 5 is placed in the installation gap between the corresponding two positioning connecting plates 7 and is hinged to the two positioning connecting plates 7 through the hinge post 9 positioned on the positioning pin 8. An L-shaped limiting plate 10 is welded and fixed to each rotating lifting beam 5. The thickness of the horizontal part of the L-shaped limiting plate 10 is the same as the thickness of the positioning connecting plate 7 on the top surface of the lower horizontal part of the U-shaped main lifting beam 1. The horizontal part of the L-shaped limiting plate 10 is welded and fixed to the rotating lifting beam 5, and the vertical part of the L-shaped limiting plate 10 is located on the outer end of the rotating lifting beam 5.

[0047] Among them, the positioning connecting plate 7 on the top surface of the lower horizontal part of the U-shaped main lifting beam 1 has an arc-shaped chamfered structure between its outer long side and outer wide side, and a right-angle structure between its inner long side and outer wide side. The two edges of the horizontal part of the L-shaped limiting plate 10 are both right-angle structures, so that the rotation range of the rotating lifting beam 5 is the range between the rotating lifting beam 5 and the lower horizontal part of the U-shaped main lifting beam 1, which are coaxially positioned, and rotate 90 degrees outward from the lower horizontal part of the U-shaped main lifting beam 1.

[0048] Each telescopic anti-rotation crossbeam 6 has a crossbeam connecting plate 11 fixedly mounted on its fixed end. The two crossbeam connecting plates 11 are respectively attached to the lower horizontal part of the two U-shaped main lifting beams 1 and fixedly connected to the lower horizontal part of the corresponding U-shaped main lifting beams 1 by bolts 12. The telescopic ends of the two telescopic anti-rotation crossbeams 6 extend to the outside of the lower horizontal part of the two U-shaped main lifting beams 1.

[0049] A method for hoisting a large rectangular jacking pipe in a non-vertical space, specifically including the following steps:

[0050] (1) Transport the finished rectangular tube section 01 to the construction site, stack it vertically, and fix it.

[0051] (2) The crawler crane 04 is used to lift the large rectangular jacking pipe hoisting device into place. The placement direction is consistent with the jacking direction of the rectangular pipe section 01. When the rectangular pipe section 01 is not under stress, the two rotating lifting beams 5 are pulled by the traction rope to rotate 90 degrees, so that the rotating lifting beams 5 are coaxial with the lower horizontal part of the U-shaped main lifting beam 1. The limiting plates on the two U-shaped main lifting beams are located in front of the front end face of the rectangular pipe section 01. The two limiting pins 4 are inserted into the reserved holes 02 on the upper horizontal part of the rectangular pipe section 01.

[0052] (3) Adjust the length of the two telescopic anti-rotation beams 6 according to the width of the inner ring of the rectangular pipe section 01, so that the outer ends of the two telescopic anti-rotation beams 6 abut against the two internal corners of the top of the inner ring of the rectangular pipe section 01. Then fix the telescopic section and the fixed section of the telescopic anti-rotation beams 6 to lock the distance between the outer ends of the two telescopic anti-rotation beams 6, so that the rectangular pipe section 01 is installed in the center on the large rectangular jacking pipe hoisting device (see...). Figure 4 );

[0053] (4) The crawler crane 04 is connected to the four lifting lugs 3 of the large rectangular jacking pipe hoisting device via wire ropes. The crawler crane 04 hoists and transports the rectangular pipe section 01 into the hoisting working shaft 03 (see...). Figure 5 The section descends slowly until the top of the rectangular pipe section 01 is lower than the bottom of the main structure 05 of the reserved jacking opening (see...). Figure 6 The rectangular tube section 01 is moved horizontally to align its axis with the designed jacking axis. Then, with the assistance of the crawler crane 04, the rectangular tube section 01 is moved horizontally and longitudinally along the axis of the reserved jacking opening to the designed jacking plane position (see...). Figure 7 ), and slowly descend to the designed jacking height (see Figure 8 );

[0054] (5) After the rectangular pipe section is hoisted to the designed jacking position, the locking connection structure of the two telescopic anti-rotation beams is disassembled and the telescopic anti-rotation beams are shortened so that the outer ends of the two telescopic anti-rotation beams are separated from the inner ring of the rectangular pipe section. Then the crawler crane drives the large rectangular jacking pipe hoisting device to move in the opposite direction of jacking so that the limit pin is separated from the reserved hole on the rectangular pipe section. The crawler crane then drives the rectangular pipe section to slowly descend a certain distance so that the limit plates on the two U-shaped main lifting beams move to the horizontal position below the rectangular pipe section. Then the traction rope is used to pull the rotating lifting beam 5 to rotate 90 degrees to the outside of the lower horizontal part of the U-shaped main lifting beam 1 so that the rotating lifting beam 5 is perpendicular to the lower horizontal part of the main lifting beam 1, which facilitates the detachment of the large rectangular jacking pipe hoisting device from the rectangular pipe section 01.

[0055] (6) After the rectangular pipe section 01 is hoisted and fixed in place, the large rectangular pipe jacking hoisting device is no longer affected by the gravity of the rectangular pipe section 01. By using the rotation of the crawler crane and the traction of the traction rope, the large rectangular pipe jacking hoisting device is completely separated from the rectangular pipe section 01. The large rectangular pipe jacking hoisting device is then hoisted out of the working well to the ground, thus completing one cycle of hoisting operation of the rectangular pipe section 01.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A non-vertical space large rectangular pipe jacking hoisting device, characterized in that: It includes two U-shaped main lifting beams, multiple connecting crossbeams, four lifting lugs, two limit pins, two rotating lifting beams, and two telescopic anti-rotation crossbeams. The two U-shaped main lifting beams are both vertically arranged and parallel to each other. Each U-shaped main lifting beam includes an upper horizontal part and a lower horizontal part that are parallel to each other, as well as a vertical part connecting the upper horizontal part and the lower horizontal part. The top of the lower horizontal part of both U-shaped main lifting beams is fixed with an upwardly extending limit plate. The two U-shaped main lifting beams are fixed together by welding multiple connecting crossbeams, and four lifting lugs are fixed in pairs to the top surfaces of the horizontal portions of each U-shaped main lifting beam. The two limiting pins are both horizontally set and fixed to the inner walls of the vertical parts of the two U-shaped main lifting beams respectively. The two limiting pins are set at the same horizontal height and both extend horizontally into the U-shaped groove of the corresponding U-shaped main lifting beam. The fixed ends of the two telescopic anti-spin beams are respectively fixedly connected to the lower horizontal parts of the two U-shaped main lifting beams, and the telescopic ends of the two telescopic anti-spin beams extend outward to the lower horizontal parts of the two U-shaped main lifting beams. The two U-shaped main lifting beams are hinged to the lower horizontal portion and near the ends of the two main lifting beams, and the limiting plates are fixed to the top of the outer ends of the two rotating lifting beams. The lower horizontal sections of the two U-shaped main lifting beams are welded and fixed with positioning connecting plates at their bottom and top ends. The length of the two positioning connecting plates on the lower horizontal section of each U-shaped main lifting beam is greater than the length of the lower horizontal section of the U-shaped main lifting beam, that is, an installation gap is formed between the outer ends of the two positioning connecting plates. The lower positioning connecting plate has a positioning pin fixed at its top end. The inner end of each rotating lifting beam is placed in the installation gap between the corresponding two positioning connecting plates and is hinged to the two positioning connecting plates through a hinge post positioned on the positioning pin. Each rotating lifting beam is welded and fixed with an L-shaped limiting plate. The thickness of the horizontal part of the L-shaped limiting plate is the same as the thickness of the positioning connecting plate on the top surface of the lower horizontal section of the U-shaped main lifting beam. The horizontal part of the L-shaped limiting plate is welded and fixed to the rotating lifting beam, and the vertical part of the L-shaped limiting plate is located on the outer end of the rotating lifting beam. The positioning connecting plate on the top surface of the lower horizontal part of the U-shaped main lifting beam has an arc-shaped chamfered angle between its outer long side and outer wide side, and a right-angled angle between its inner long side and outer wide side. The two edges of the horizontal part of the L-shaped limiting plate are both right-angled, so that the rotation range of the rotating lifting beam is the range between the rotating lifting beam and the lower horizontal part of the U-shaped main lifting beam being coaxially positioned and rotating 90 degrees outward from the lower horizontal part of the U-shaped main lifting beam.

2. The non-vertical space large rectangular pipe jacking hoisting device according to claim 1, characterized in that: Both U-shaped main lifting beams are rectangular hollow steel sections with U-shaped bends, and end reinforcing plates are welded to both ends of the two U-shaped main lifting beams; L-shaped reinforcing plates are welded to the L-shaped bends of the upper horizontal and vertical sections and the lower horizontal and vertical sections of each U-shaped main lifting beam.

3. The non-vertical space large rectangular pipe jacking hoisting device according to claim 1, characterized in that: The multiple connecting beams are respectively fixedly connected between the upper horizontal portions of the two U-shaped main lifting beams and between the lower horizontal portions of the two U-shaped main lifting beams.

4. The non-vertical space large rectangular pipe jacking hoisting device according to claim 1, characterized in that: Each of the four lifting lugs includes two lifting connecting plates and a lug with a lug hole. The two lifting connecting plates are vertically arranged and parallel to each other. The bottom ends of the two lifting connecting plates are welded and fixed to the top surface of the horizontal end of the U-shaped main lifting beam. The lug is vertically arranged and perpendicular to the two lifting connecting plates. The bottom end of the lug is inserted into the two lifting connecting plates and welded and fixed to the two lifting connecting plates.

5. A non-vertical space large rectangular pipe jacking hoisting device according to claim 1, characterized in that: The two telescopic anti-rotation crossbeams are each fitted with a crossbeam connecting plate. The two crossbeam connecting plates are respectively attached to the lower horizontal part of the two U-shaped main lifting beams and are fixedly connected to the lower horizontal part of the corresponding U-shaped main lifting beams by bolts.

6. The hoisting method of a non-vertical space large rectangular pipe jacking hoisting device according to claim 1, characterized in that: Specifically, it includes the following steps: (1) Transport the finished rectangular pipe sections to the construction site and stack them vertically; (2) The large rectangular jacking pipe hoisting device is positioned by using a crawler crane to lift the entire pipe. The positioning direction is consistent with the jacking direction of the rectangular pipe section, so that the limiting plates on the two U-shaped main lifting beams are located in front of the front end face of the rectangular pipe section, and the two limiting pins are inserted into the reserved holes on the horizontal part of the rectangular pipe section. (3) Adjust the length of the two telescopic anti-rotation beams according to the width of the inner ring of the rectangular pipe section, so that the outer ends of the two telescopic anti-rotation beams abut against the two inner corners of the top of the inner ring of the rectangular pipe section. Then fix the telescopic section and the fixed section of the telescopic anti-rotation beams to lock the distance between the outer ends of the two telescopic anti-rotation beams, so that the rectangular pipe section is installed in the center on the large rectangular jacking pipe hoisting device. (4) The crawler crane is connected to the four lifting lugs of the large rectangular jacking pipe hoisting device through steel wire rope. The crawler crane hoists and transports the rectangular pipe section to the hoisting working shaft and slowly lowers it. When the horizontal height of the top of the rectangular pipe section is lower than the horizontal height of the bottom surface of the main structure of the reserved jacking hole, the rectangular pipe section is moved horizontally to make its axis overlap with the design jacking axis. Then, with the cooperation of the crawler crane, the rectangular pipe section moves horizontally and longitudinally along the axis of the reserved jacking hole to the design jacking plane position and slowly lowers to the design jacking height. (5) After the rectangular pipe section is hoisted to the designed jacking position, the locking connection structure of the two telescopic anti-rotation beams is disassembled and the telescopic anti-rotation beams are shortened so that the outer ends of the two telescopic anti-rotation beams are separated from the inner ring of the rectangular pipe section. Then, the crawler crane drives the large rectangular pipe hoisting device to move horizontally in the opposite direction of jacking so that the limit pin is separated from the reserved hole on the rectangular pipe section. The crawler crane then drives the rectangular pipe section to slowly descend a certain distance so that the limit plates on the two U-shaped main lifting beams move to the horizontal position below the rectangular pipe section. Then, by using the rotation of the crawler crane and the traction of the traction rope, the large rectangular pipe hoisting device is completely separated from the rectangular pipe section. The large rectangular pipe hoisting device is then hoisted out of the working well to the ground, thus completing one cycle of the rectangular pipe section hoisting operation.

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