Rotary lifting appliance for lifting steel truss girder sections

Abstract

The invention discloses a rotary lifting appliance for lifting steel truss girder segments, which comprises a cross beam, the two ends of the cross beam are respectively connected with the middle parts of distribution beams which are positioned above the cross beam and are arranged along the longitudinal direction through a lower connecting beam, and the two ends of each distribution beam are respectively connected with a movable pulley block positioned above the distribution beam through an upper connecting beam; the middle of the cross beam is further connected with a transfer beam located below the cross beam through a rotary driving mechanism, a plurality of distribution adjusting beams are connected to the transfer beam, and lifting ropes are connected to the distribution adjusting beams. The hoisting device is composed of the movable pulley block, the upper connecting beam, the distribution beam, the lower connecting beam, the cross beam, the rotation driving mechanism, the transfer beam and the distribution adjusting beam, by arranging the rotation driving mechanism, a speed reducer rotates to drive a large gear to rotate in the using process, rotation of a hoisting rod is achieved, and a hoisting beam section can be rotated by 360 degrees in the air; after rotating by 90 degrees, the steel truss girder section to be installed can be transported to pass through the upper portion of the installed girder section, after the cable hoist is hoisted to the position to be installed, rotating is conducted again, and the plane angle of the girder section is adjusted to be in butt joint with the installed girder section.

Description

Technical Field

[0001] The invention relates to a steel truss segment hoisting rotating hoist and belongs to the technical field of bridge construction equipment. Background Art

[0002] In canyon areas, the river valley is often U-shaped and deep, the river bank is steep, the construction site is extremely narrow, the canyon is deep, the bridge is high and it is not navigable. Therefore, the cable hoisting method is mainly used for the construction of reinforced steel trusses of canyon suspension bridges in mountainous areas.

[0003] Steel truss suspension bridges are mostly hoisted in segments as a whole, and the segments are connected on site. The cable hoist system is used to hoist, transport and install the entire bridge from one bank, and the installation sequence is symmetrical from the middle of the span to both sides. The steel truss cable hoisting points are arranged directly above the two main trusses, which makes the distance between the upstream and downstream cables smaller than the overall width of the steel truss, and the segments cannot pass through the installed positions in a normal posture. Therefore, in addition to vertical hoisting and horizontal transportation, the cable hoist system must also have a load steering function. Summary of the invention

[0004] The purpose of the present invention is to provide a steel truss segment hoisting rotating hoist. The hoist has a load steering function and can complete the overall 360° rotation of the steel truss in the air, thereby realizing the hoisting of the steel truss segment under the restrictions of terrain, transportation and other conditions.

[0005] The technical solution of the present invention is a steel truss segment lifting and rotating sling, comprising a crossbeam, both ends of which are connected to the middle part of a distribution beam located above it and arranged longitudinally via a lower connecting beam, both ends of each distribution beam are connected to a movable pulley block located above it via an upper connecting beam, the middle part of the crossbeam is also connected to a conversion beam located below it via a rotating drive mechanism, a plurality of distribution adjustment beams are connected to the conversion beam, and a lifting rope is connected to the distribution adjustment beam.

[0006] In the aforementioned steel truss segment lifting and rotating hoisting device, the movable pulley block and the upper connecting beam, the distribution beam and the upper connecting beam and the lower connecting beam, the cross beam and the lower connecting beam and the rotating drive mechanism, and the conversion beam and the rotating drive mechanism and the distribution adjustment beam are all connected by pins, and reinforcing plates are provided inside and outside the pin holes of each component through which the pin passes, and a slot is provided on the pin, and the clip plate is inserted into the slot and fixed to the outer reinforcing plate by bolts.

[0007] In the aforementioned steel truss segment lifting and rotating lifting device, the movable pulley block includes a plurality of pulley block pull plates which are arranged in parallel and at intervals, a plurality of installation shafts and screw rods pass through the plurality of pulley block pull plates, and a lifting pulley and a limiting steel pipe are respectively sleeved on the installation shafts and screw rods between adjacent pulley block pull plates; pin shaft through holes are provided at the lower ends of the plurality of pulley block pull plates.

[0008] In the aforementioned steel truss segment lifting and rotating lifting device, the upper connecting beam includes two upper connecting beam pull-up plates spaced apart and arranged in parallel, and an upper connecting beam lower pull-up plate is provided on the outer side of each upper connecting beam pull-up plate, and the upper connecting beam lower pull-up plate extends downward from the middle position of the upper connecting beam pull-up plate, and the upper connecting beam pull-up plates are connected together through a cover plate; the upper ends of the two upper connecting beam pull-up plates and the lower ends of the two upper connecting beam pull-down plates are provided with pin shaft through holes.

[0009] In the aforementioned steel truss segment lifting and rotating hoist, the distribution beam includes two distribution beam side plates arranged at intervals and in parallel, the tops and bottoms of the two distribution beam side plates are respectively connected to the distribution beam face plate and the distribution beam bottom plate, the two distribution beam side plates are connected via a plurality of vertically arranged distribution beam stiffening plates, and both ends and the middle of the two distribution beam side plates are provided with pin shaft through holes; the cross beam includes two cross beam side plates arranged at intervals and in parallel, the tops and bottoms of the two cross beam side plates are respectively connected to the cross beam face plate and the cross beam bottom plate, the two cross beam side plates are connected via a plurality of vertically arranged cross beam stiffening plates, a cross beam connecting seat is provided at each end of the cross beam face plate, and pin shaft through holes are provided at the cross beam connecting seat and the middle position of the two cross beam side plates.

[0010] In the aforementioned steel truss segment lifting and rotating lifting device, the lower connecting beam includes two lower connecting beam upper pull-up plates spaced apart and arranged in parallel, the inner walls of the two lower connecting beam upper pull-up plates are connected from the middle downward through two lower connecting beam lower pull-down plates spaced apart and arranged in parallel, a lower connecting beam reinforcement plate is connected between the top and the middle of the two lower connecting beam lower pull-down plates, and pin shaft through holes are provided on the tops of the two lower connecting beam upper pull-up plates and the bottoms of the two lower connecting beam lower pull-down plates.

[0011] In the aforementioned steel truss segment lifting and rotating hoisting device, the rotating drive mechanism includes a rotating mechanism bottom plate, two rotating mechanism side plates are arranged on the rotating mechanism bottom plate, and pin shaft through-holes corresponding to the positions are arranged on the upper ends of the two rotating mechanism side plates. A suspension rod mounting seat is arranged on the rotating mechanism bottom plate between the two rotating mechanism side plates, and a suspension rod is vertically arranged in the suspension rod mounting seat. A support sleeve is fixedly connected to the suspension rod head end located above the suspension rod mounting seat, and a large gear is fixedly sleeved on the suspension rod located below the rotating mechanism bottom plate, and a pin shaft through-hole is arranged at the lower end of the suspension rod. The large gear is meshed with a plurality of small gears, and the small gears are fixedly sleeved on the output shaft of the reducer. The reducer is mounted on the rotating mechanism bottom plate and connected to the driving motor.

[0012] In the aforementioned steel truss segment hoisting rotating hoist, a plurality of bearings are sleeved on the hoisting rod; and the support sleeve is threadedly connected to the hoisting rod.

[0013] In the aforementioned steel truss segment lifting and rotating hoist, the conversion beam includes a conversion beam mounting seat, which is formed by welding the conversion beam side plates at the front, rear, left and right sides of the conversion beam and the middle conversion beam stiffening plate, wherein the upper ends of the front and rear conversion beam side plates and the conversion beam stiffening plates are provided with pin shaft through holes connected to the rotating drive mechanism; the front and rear ends of the lower ends of the left and right conversion beam side plates are each provided with a pin shaft through hole connected to the distribution adjustment beam.

[0014] In the aforementioned steel truss segment lifting and rotating sling, the distribution adjustment beam includes an adjustment beam base composed of front, rear, left and right side plates and a top plate welded together, two adjustment beam supports are installed on the top of the adjustment beam base, both adjustment beam supports are provided with pin shaft through holes, and two adjustment beam pulleys are connected to the left and right ends of the adjustment beam base through a pin shaft, and the adjustment beam pulley is connected to the lifting rope.

[0015] Beneficial effects of the present invention: Compared with the prior art, the hoist of the present invention is composed of a movable pulley group, an upper connecting beam, a distribution beam, a lower connecting beam, a cross beam, a rotation drive mechanism, a conversion beam and a distribution adjustment beam. By providing a rotation drive mechanism, the reducer rotates during use to drive the large gear to rotate, thereby realizing the rotation of the hanger. The hoisted beam section can be rotated 360° in the air, and the steel truss beam section to be installed can be transported over the installed beam section after being rotated 90°. After the cable hoisting is lifted to the position to be installed, it is rotated again to adjust the plane angle of the beam section to dock with the installed beam section.

[0016] In summary, the hoist of the present invention can be used in conjunction with a cable hoist, has a load steering function, a reasonable structural design, is safe and reliable, and can complete an overall 360° rotation of a steel truss in the air, thereby realizing the lifting of steel truss segments under restrictions such as terrain and transportation conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a left-side structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the top view of the structure of the present invention; Figure 4 It is a structural schematic diagram of a movable pulley block; Figure 5 It is a schematic diagram of the cross-sectional structure of the movable pulley block A-A; Figure 6 It is a schematic diagram of the cross-sectional structure of the movable pulley block B-B; Figure 7 Schematic diagram of the upper connecting beam structure; Figure 8 This is a schematic diagram of the distribution beam structure; Fig. 9is a schematic diagram of the lower connecting beam structure; Fig.10 for Fig. 9 A schematic diagram of the side structure of Fig.11 This is a schematic diagram of the main structure of the beam; Fig.12 It is a schematic diagram of the main structure of the rotary drive mechanism; Fig.13 It is a structural schematic diagram of the rotary drive mechanism A-A; Fig.14 is a schematic diagram of the transfer beam structure; Fig.15 for Fig.14 A schematic diagram of the side structure of Fig.16 Adjust the beam structure schematic for allocation; Fig.17 for Fig.16 Schematic diagram of the side structure.

[0018] Figure numerals: 1, movable pulley block; 1-1, multiple pulley block pull plates; 1-2, installation shaft; 1-3, lifting pulley; 1-4, screw; 1-5, limit steel pipe; 2, upper connecting beam; 2-1, upper connecting beam upper pull plate; 2-2, upper connecting beam lower pull plate; 2-3, cover plate; 3, distribution beam; 3-1, distribution beam panel panel; 3-2, distribution beam side plate; 3-3, distribution beam bottom plate; 3-4, distribution beam stiffening plate; 4, lower connecting beam; 4-1, lower connecting beam upper pull plate; 4-2, lower connecting beam lower pull plate; 4-3, lower connecting beam reinforcement plate; 5, cross beam; 5-1, cross beam panel; 5-2, cross beam side plate; 5-3, cross beam bottom plate; 5 -4, crossbeam stiffening plate; 5-5, crossbeam connecting seat; 6, rotating drive mechanism; 6-1, rotating mechanism bottom plate; 6-2, rotating mechanism side plate; 6-3, bearing; 6-4, suspension rod mounting seat; 6-5, suspension rod; 6-6, support sleeve; 6-7, large gear; 6-8, small gear; 6-9, reducer; 7, conversion beam; 7-1, conversion beam mounting seat; 7-2, conversion beam side plate; 7-3, conversion beam stiffening plate; 8, distribution adjustment beam; 8-1, adjustment beam base; 8-2, adjustment beam support; 8-3, adjustment beam pulley; 9, reinforcement plate; 10, clamping plate; 11, pin shaft. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0020] An embodiment of the present invention: A steel truss segment lifting rotating sling comprises a cross beam 5, both ends of the cross beam 5 are connected to the middle of a distribution beam 3 located above it and arranged longitudinally via a lower connecting beam 4, both ends of each distribution beam 3 are connected to a movable pulley block 1 located above it via an upper connecting beam 2, the middle of the cross beam 5 is also connected to a conversion beam 7 located below it via a rotating drive mechanism 6, two distribution adjustment beams 8 are connected to the conversion beam 7, and a lifting rope is connected to the distribution adjustment beam 8.

[0021] In the steel truss girder segment lifting and rotating lifting device of the present invention, the movable pulley block 1 is arranged at the top of the entire lifting device and is connected to the sports car through a lifting rope. The lifting rope connected to the distribution and adjustment beam 8 is used to connect the steel truss girder segments. When the steel truss girder segment encounters an installed segment and cannot pass through during the lifting process, the rotating drive mechanism 6 can drive the entire conversion beam 7, the distribution and adjustment beam 8 and the lifted steel truss girder segment to rotate 360° in the air. After the steel truss girder segment to be installed is rotated 90°, it can be transported over the installed beam segment. After the cable is lifted and hoisted to the position to be installed, the rotating drive mechanism 6 drives the steel truss girder segment to rotate again, adjusts the plane angle of the beam segment, and realizes docking with the installed beam segment.

[0022] The movable pulley block 1 and the upper connecting beam 2, the upper connecting beam 2 and the distribution beam 3, the distribution beam 3 and the lower connecting beam 4, the lower connecting beam 4 and the cross beam 5, the cross beam 5 and the rotation drive mechanism 6, the rotation drive mechanism 6 and the conversion beam 7, and the conversion beam 7 and the distribution adjustment beam 8 are all connected by a pin shaft 11, so as to realize the mutual connection between the components, and a certain angle deflection can be achieved around the pin shaft 11 during the lifting process. Reinforcement plates 9 are provided inside and outside the pin shaft perforation of each component through which the pin shaft 11 passes, so as to improve the structural strength of the pin shaft perforation and avoid the pin shaft perforation from breaking under the action of tension. Each pin shaft 11 is provided with a card slot at both ends located outside the pin shaft perforation, and each card slot is provided with an upper and lower card plate 10. After the card plate 10 is inserted into the card slot, it is fixed together with the outer reinforcing plate 9 by bolts, so as to limit and fix the pin shaft 11 and prevent the pin shaft 11 from slipping out of the pin shaft perforation.

[0023] The movable pulley block 1 comprises four pulley block plates 1-1 arranged in parallel and at intervals, three installation shafts 1-2 are passed through the upper ends of the four pulley block plates 1-1, and a plurality of screw rods 1-4 are passed through the four pulley block plates 1-1. A lifting pulley 1-3 is sleeved on the installation shafts 1-2 between adjacent pulley block plates 1-1, and a lifting limit steel pipe 1-5 is sleeved on the screw rods 1-4 between adjacent pulley block plates 1-1. 2 and both ends of the screw rod 1-4 are locked and fixed by nuts, and the two ends of the limiting steel pipe 1-5 are against the two adjacent pulley block pull plates 1-1 to realize the limiting fixation of the pulley block pull plates 1-1, ensuring that the interval between adjacent pulley block pull plates 1-1 is fixed, and the lifting pulley 1-3 is connected to the sports car through a lifting rope. A pin shaft through-hole is provided in the middle of the lower end of the four pulley block pull plates 1-1, and the pin shaft through-hole is used to pass through the pin shaft 11 connecting the upper connecting beam 2 and the movable pulley block 1.

[0024] The upper connecting beam 2 includes two upper connecting beam upper pull-up plates 2-1 arranged in parallel at intervals, and each upper connecting beam upper pull-up plate 2-1 is provided with an upper connecting beam lower pull-up plate 2-2 parallel to the upper connecting beam upper pull-up plate 2-1 at intervals on the outer side of each upper connecting beam upper pull-up plate 2-1, and the upper connecting beam lower pull-up plate 2-2 extends downward from the middle position of the upper connecting beam upper pull-up plate 2-1, between the bottom end of the upper connecting beam upper pull-up plate 2-1 and the upper connecting beam lower pull-up plate 2-2, between the top end of the upper connecting beam lower pull-up plate 2-2 and the adjacent upper connecting beam upper pull-up plate 2-1, and The upper connecting beam upper pull plates 2-1 are welded together via cover plates 2-3, and the upper connecting beam upper pull plates 2-1 and the upper connecting beam lower pull plates 2-2 are connected to form a whole through multiple cover plates 2-3. The upper ends of the two upper connecting beam upper pull plates 2-1 and the lower ends of the two upper connecting beam lower pull plates 2-2 are provided with pin shaft through holes. The pin shaft through holes at the upper ends are used to pass through the pin shaft 11 connecting the upper connecting beam 2 and the movable pulley block 1, and the pin shaft through holes at the lower ends are used to pass through the pin shaft 11 connecting the upper connecting beam 2 and the distribution beam 3.

[0025] The distribution beam 3 includes two distribution beam side plates 3-2 that are spaced apart and arranged in parallel. The top and bottom of the two distribution beam side plates 3-2 are respectively welded with a distribution beam panel 3-1 and a distribution beam bottom plate 3-3. The two distribution beam side plates 3-2 are welded and connected via a plurality of vertically arranged distribution beam stiffening plates 3-4. The connection strength between the two distribution beam side plates 3-2 is strengthened by the distribution beam stiffening plates 3-4. Pin holes are provided at the upper parts of both ends and the lower middle parts of the two distribution beam side plates 3-2. The pin holes at both ends are used to pass through the pin 11 connecting the upper connecting beam 2 and the distribution beam 3, and the pin holes at the lower middle parts are used to pass through the pin 11 connecting the distribution beam 3 and the lower connecting beam 4.

[0026] The cross beam 5 includes two cross beam side plates 5-2 arranged in parallel and at intervals, the top and bottom of the two cross beam side plates 5-2 are respectively connected to the cross beam panel 5-1 and the cross beam bottom plate 5-3, the two cross beam side plates 5-2 are connected via a plurality of vertically arranged cross beam stiffening plates 5-4, a cross beam connecting seat 5-5 is arranged at each end of the cross beam panel 5-1, and pin shaft through holes are arranged in the middle of the cross beam connecting seat 5-5 and the two cross beam side plates 5-2. The pin shaft through holes on the cross beam connecting seat 5-5 are used to pass through the pin shaft 11 connecting the lower connecting beam 4 and the cross beam 5, and the pin shaft through holes in the middle are used to pass through the pin shaft 11 connecting the cross beam 5 and the rotating drive mechanism 6.

[0027] The lower connecting beam 4 includes two lower connecting beam upper pull-up plates 4-1 arranged at intervals and in parallel. The inner walls of the two lower connecting beam upper pull-up plates 4-1 are welded and connected from the middle to the bottom through two lower connecting beam lower pull-down plates 4-2 arranged at intervals and in parallel. The two lower connecting beam upper pull-up plates 4-1 and the two lower connecting beam lower pull-down plates 4-2 form a cross structure. A lower connecting beam reinforcement plate 4-3 is connected between the top and the middle of the two lower connecting beam lower pull-down plates 4-2. Pin shaft through holes are provided on the tops of the two lower connecting beam upper pull-up plates 4-1 and the bottoms of the two lower connecting beam lower pull-down plates 4-2. The pin shaft through holes on the two lower connecting beam upper pull-up plates 4-1 are used to pass through the pin shaft 11 connecting the distribution beam 3 and the lower connecting beam 4, and the pin shaft through holes on the two lower connecting beam lower pull-down plates 4-2 are used to pass through the pin shaft 11 connecting the cross beam 5 and the lower connecting beam 4.

[0028] The rotary drive mechanism 6 includes a rotary mechanism bottom plate 6-1, on which two rotary mechanism side plates 6-2 are arranged, and the upper ends of the two rotary mechanism side plates 6-2 are provided with pin shaft through holes at corresponding positions, and the pin shaft through holes are used to connect the cross beam 5 and the rotary drive mechanism 6. A suspension rod mounting seat 6-4 is arranged on the rotary mechanism bottom plate 6-1 between the two rotary mechanism side plates 6-2, and a suspension rod 6-5 is vertically arranged in the suspension rod mounting seat 6-4. The head end of the suspension rod 6-5 located above the suspension rod mounting seat 6-4 is fixedly connected to a support sleeve 6-6, and the support sleeve 6-6 is connected to the suspension rod 6-5 through the support sleeve 6-6. 6 The entire boom 6-5 is supported on the boom mounting seat 6-4 to prevent the boom 6-5 from falling off the boom mounting seat 6-4 under the action of gravity. A large gear 6-7 is fixedly sleeved on the boom 6-5 located below the bottom plate 6-1 of the rotating mechanism. A pin shaft through hole is provided at the lower end of the boom 6-5. The pin shaft through hole is used to pass through the pin shaft 11 connecting the rotating drive mechanism 6 and the conversion beam 7. The large gear 6-7 is meshed with two small gears 6-8. The small gear 6-8 is fixedly sleeved on the output shaft of the reducer 6-9. The reducer 6-9 is installed on the bottom plate 6-1 of the rotating mechanism and connected to the driving motor. When the steel truss beam segment to be lifted is rotated, the driving motor drives the output shaft of the reducer 6-9 to rotate, thereby driving the small gear 6-8 to rotate, and driving the large gear 6-7 to rotate through the small gear 6-8, and finally driving the boom 6-5 to rotate, thereby driving the conversion beam 7 connected thereto to rotate, and finally realizing the rotation of the steel truss beam segment.

[0029] The suspension rod 6-5 is sleeved with a plurality of bearings 6-3, and the main function of the bearings 6-3 is to support the suspension rod 6-5, reduce the friction coefficient during its movement, and ensure its rotation accuracy. The support sleeve 6-6 is threadedly connected to the suspension rod 6-5, which facilitates the connection and separation between the two.

[0030] The transfer beam 7 includes a transfer beam mounting seat 7-1, which is formed by welding the transfer beam side plates 7-2 at the front, rear, left and right sides of the transfer beam, the middle transfer beam stiffening plate 7-3 and the top plate to form a box structure, wherein the upper ends of the transfer beam side plates 7-2 at the front and rear sides and the internal transfer beam stiffening plate 7-3 are provided with pin shaft through holes connected to the rotation drive mechanism 6. The lower ends of the left and right transfer beam side plates 7-2 are each provided with a pin shaft through hole connected to the distribution adjustment beam 8, and the two pin shaft through holes are used to connect the two distribution adjustment beams 8.

[0031] The distribution adjustment beam 8 includes an adjustment beam base 8-1 formed by welding front, rear, left and right side plates and a top plate. Two adjustment beam supports 8-2 are installed on the top of the adjustment beam base 8-1. The two adjustment beam supports 8-2 are provided with pin holes, which are used to pass through the pins connecting the distribution adjustment beam 8 and the conversion beam 7. Two adjustment beam pulleys 8-3 are connected to the left and right ends of the adjustment beam base 8-1 through a pin 11. The adjustment beam pulleys 8-3 are connected to the lifting ropes, and the steel truss beam segments to be lifted are fixed by the lifting ropes.

[0032] Now take a suspension bridge as an example for explanation: the suspension bridge is a highway bridge with a main span of 1420m and a vertical distance of 625m between the bridge deck and the water surface; the steel truss adopts a steel plate truss composite structure, the truss is a Warren truss structure, the truss height of the steel truss truss is 8m, the center distance between the two main trusses is 27.0m, the standard inter-section length is 7.7m, the inter-section length of the beam end is 7.3m, the standard section length is 15.4m, the whole bridge has 93 sections, and the standard beam section weighs 215t. The bridge is hoisted, transported and installed as a whole from one bank, and the installation sequence is symmetrical from the middle of the span to both sides. In order to ensure that the beam section is not affected by the installed beam section during transportation and can be adjusted in angle during installation, the steel truss beam section hoisting and rotating hoist provided by the present invention is selected and used in conjunction with the cable hoist. The hoisting structure is reasonably designed, safe and reliable, and can complete the overall 360° rotation of the steel truss in the air, which is limited by terrain, transportation and other conditions.

Claims

1. A steel truss segment hoisting rotating hoist, characterized in that: The invention comprises a cross beam (5), the two ends of the cross beam (5) are connected to the middle of a distribution beam (3) located above the cross beam and arranged in the longitudinal direction via a lower connecting beam (4), the two ends of each distribution beam (3) are connected to a movable pulley block (1) located above the cross beam via an upper connecting beam (2), the middle of the cross beam (5) is also connected to a conversion beam (7) located below the cross beam via a rotating drive mechanism (6), a plurality of distribution adjustment beams (8) are connected to the conversion beam (7), and a suspension rope is connected to the distribution adjustment beam (8).

2. A steel truss segment hoisting rotating sling according to claim 1, characterized in that: The movable pulley block (1) and the upper connecting beam (2), the distribution beam (3) and the upper connecting beam (2) and the lower connecting beam (4), the cross beam (5) and the lower connecting beam (4) and the rotary drive mechanism (6), and the conversion beam (7) and the rotary drive mechanism (6) and the distribution adjustment beam (8) are all connected via a pin shaft (11). A reinforcing plate (9) is provided inside and outside the pin shaft through-hole of each component through which the pin shaft (11) passes. A clamping groove is provided on the pin shaft (11). The clamping plate (10) is clamped into the clamping groove and fixed to the outer reinforcing plate (9) via bolts.

3. A steel truss segment hoisting rotating sling according to claim 2, characterized in that: The movable pulley block (1) comprises a plurality of pulley block pull plates (1-1) arranged in parallel and at intervals, a plurality of mounting shafts (1-2) and screw rods (1-4) passing through the plurality of pulley block pull plates (1-1), a lifting pulley (1-3) and a limiting steel pipe (1-5) being sleeved on the mounting shafts (1-2) and screw rods (1-4) between adjacent pulley block pull plates (1-1) respectively; and a pin through hole is provided at the lower end of the plurality of pulley block pull plates (1-1).

4. A steel truss segment hoisting rotating sling according to claim 2, characterized in that: The upper connecting beam (2) comprises two upper connecting beam upper pull-up plates (2-1) which are spaced apart and arranged in parallel. An upper connecting beam lower pull-up plate (2-2) is arranged on the outer side of each upper connecting beam upper pull-up plate (2-1). The upper connecting beam lower pull-up plate (2-2) extends downward from the middle of the upper connecting beam upper pull-up plate (2-1). Between the bottom end of the upper connecting beam upper pull-up plate (2-1) and the upper connecting beam lower pull-up plate (2-2), between the top end of the upper connecting beam lower pull-up plate (2-2) and the adjacent upper connecting beam upper pull-up plate (2-1), and between the upper connecting beam upper pull-up plates (2-1) are connected together via a cover plate (2-3); the upper ends of the two upper connecting beam upper pull-up plates (2-1) and the lower ends of the two upper connecting beam lower pull-up plates (2-2) are provided with pin shaft through holes.

5. The steel truss segment hoisting rotating hoist according to claim 2, characterized in that: The distribution beam (3) comprises two distribution beam side plates (3-2) spaced apart and arranged in parallel, the top and bottom of the two distribution beam side plates (3-2) are respectively connected to the distribution beam face plate (3-1) and the distribution beam bottom plate (3-3), the two distribution beam side plates (3-2) are connected via a plurality of vertically arranged distribution beam stiffening plates (3-4), and pin shaft through holes are provided at both ends and in the middle of the two distribution beam side plates (3-2); the cross beam (5) comprises two spaced apart and The cross beam side plates (5-2) are arranged in parallel, the top and bottom of the two cross beam side plates (5-2) are respectively connected to the cross beam face plate (5-1) and the cross beam bottom plate (5-3), the two cross beam side plates (5-2) are connected via a plurality of vertically arranged cross beam stiffening plates (5-4), a cross beam connecting seat (5-5) is respectively arranged at both ends of the cross beam face plate (5-1), and pin shaft through holes are arranged in the middle of the cross beam connecting seat (5-5) and the two cross beam side plates (5-2).

6. A steel truss segment hoisting rotating hoist according to claim 2, characterized in that: The lower connecting beam (4) comprises two lower connecting beam upper pull-up plates (4-1) arranged at intervals and in parallel, the inner walls of the two lower connecting beam upper pull-up plates (4-1) are connected from the middle downward through two lower connecting beam lower pull-down plates (4-2) arranged at intervals and in parallel, a lower connecting beam reinforcement plate (4-3) is connected between the top and the middle of the two lower connecting beam lower pull-down plates (4-2), and pin shaft through holes are provided at the tops of the two lower connecting beam upper pull-up plates (4-1) and the bottoms of the two lower connecting beam lower pull-down plates (4-2).

7. The steel truss segment hoisting rotating hoist according to claim 2, characterized in that: The rotary drive mechanism (6) comprises a rotary mechanism bottom plate (6-1), two rotary mechanism side plates (6-2) are arranged on the rotary mechanism bottom plate (6-1), pin shaft through holes corresponding to the positions are arranged at the upper ends of the two rotary mechanism side plates (6-2), a suspension rod mounting seat (6-4) is arranged on the rotary mechanism bottom plate (6-1) between the two rotary mechanism side plates (6-2), a suspension rod (6-5) is vertically arranged in the suspension rod mounting seat (6-4), and a suspension rod (6-5) is arranged on the suspension rod mounting seat (6-4). The head end of the upper suspension rod (6-5) is fixedly connected to a support sleeve (6-6); a large gear (6-7) is fixedly sleeved on the suspension rod (6-5) located below the rotating mechanism bottom plate (6-1); a pin shaft through hole is provided at the lower end of the suspension rod (6-5); the large gear (6-7) is meshed with a plurality of small gears (6-8); the small gears (6-8) are fixedly sleeved on the output shaft of a reducer (6-9); the reducer (6-9) is mounted on the rotating mechanism bottom plate (6-1) and connected to the drive motor.

8. The steel truss segment hoisting rotating hoist according to claim 7, characterized in that: A plurality of bearings (6-3) are sleeved on the suspension rod (6-5); and the support sleeve (6-6) is threadedly connected to the suspension rod (6-5).

9. The steel truss segment hoisting and rotating hoist according to claim 2, characterized in that: The conversion beam (7) comprises a conversion beam mounting seat (7-1), the conversion beam mounting seat (7-1) being formed by mutually welding conversion beam side plates (7-2) at the front, rear, left and right sides of the conversion beam and a conversion beam stiffening plate (7-3) in the middle, wherein the upper ends of the conversion beam side plates (7-2) at the front and rear sides and the conversion beam stiffening plate (7-3) are provided with pin shaft through holes connected to the rotation drive mechanism (6); and the lower ends of the left and right conversion beam side plates (7-2) are each provided with a pin shaft through hole connected to the distribution adjustment beam (8) at the front and rear sides.

10. The steel truss segment hoisting rotating hoist according to claim 2, characterized in that: The distribution adjustment beam (8) comprises an adjustment beam base (8-1) formed by welding front, rear, left and right side plates and a top plate to each other, two adjustment beam supports (8-2) being mounted on the top of the adjustment beam base (8-1), both adjustment beam supports (8-2) being provided with pin holes, two adjustment beam pulleys (8-3) being connected to the left and right ends of the adjustment beam base (8-1) via a pin (11), and the adjustment beam pulleys (8-3) being connected to a suspension rope.

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