Auxiliary device for high-altitude lifting of large-span steel structures

Abstract

The present invention discloses an auxiliary device for high-altitude hoisting of large-span steel structures, comprising a hoisting block and a cylindrical connecting sleeve, wherein a plurality of hoisting ropes are fixedly connected to the middle position of the upper end surface of the hoisting block, two symmetrically distributed fixed pulleys are fixedly connected to the bottom of the hoisting block, a connecting rope is fixedly connected to two symmetrical positions of the upper end of the connecting sleeve, a connecting column is slidably connected to the inner wall of the connecting sleeve, and the ends of the two connecting ropes away from the connecting sleeve are respectively wound around the two fixed pulleys and fixedly connected to the top of the connecting column. The hoisting device in the present invention can automatically adjust the relative position of the connecting column and the connecting sleeve according to steel structures of different lengths, so that both ends and the center of the steel structure are tied and pulled with ropes, thereby improving the high-altitude hoisting stability of the large-span steel structure, and at the same time, the wind force generated by the propulsion fan can be used to reversely push the steel structure to rotate in the air, which is convenient for the placement and installation of the steel structure, thereby improving the efficiency of hoisting and construction.

Description

Technical Field

[0001] The invention relates to the technical field of building hoisting, in particular to an auxiliary device for high-altitude hoisting of a large-span steel structure. Background Art

[0002] Steel structures with a horizontal span of 60 meters, concrete structures with a span of more than 30 meters, and frame structures with a span of more than 18 meters are large-span steel structures. Their structural forms mainly include five major spatial structures such as grid structure, lattice shell structure, suspension structure, membrane structure, and thin shell structure, as well as various combined spatial structures.

[0003] During the construction process, when hoisting and transporting large-span steel structures, hoisting equipment is usually used to bundle the steel structures. The hooks of the hoisting equipment hook the bundled steel structure materials. However, this hoisting method cannot ensure the balance of both sides of the steel structure. The steel structure will tilt during hoisting and is prone to falling risks. In addition, the steel structure cannot be adjusted in angle during hoisting and placement, and workers need to pull it, which is more troublesome. For this reason, an auxiliary device for high-altitude hoisting of large-span steel structures is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose an auxiliary device for high-altitude lifting of large-span steel structures.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An auxiliary device for high-altitude lifting of large-span steel structures includes a lifting block and a cylindrical connecting sleeve. Multiple lifting ropes are fixedly connected to the middle position of the upper end surface of the lifting block. Two symmetrically distributed fixed pulleys are fixedly connected to the bottom of the lifting block. A connecting rope is fixedly connected to two symmetrical positions on the upper end of the connecting sleeve. A connecting column is slidably connected to the inner wall of the connecting sleeve. The ends of the two connecting ropes away from the connecting sleeve are respectively wrapped around the two fixed pulleys and are fixedly connected to the top of the connecting column. A lifting mechanism and an auxiliary mechanism are provided on the connecting sleeve.

[0007] Furthermore, the lifting mechanism includes multiple first pull ropes, which are fixedly connected to the bottom of the connecting column, and each of the first pull ropes is fixedly connected to a safety buckle at one end away from the connecting column. Two symmetrically distributed sliding grooves are provided on the connecting column, and two symmetrically distributed movable grooves are provided on the inner cylinder wall of the connecting sleeve. A limiting block is slidably connected in each of the movable grooves, and each of the limiting blocks is fixedly connected to a first spring at one end located in the movable groove. The end of the first spring away from the limiting block is fixedly connected to the inner groove wall of the movable groove, and the two limiting blocks are slidably connected to the two sliding grooves at one end located outside the movable groove.

[0008] Furthermore, the auxiliary mechanism includes a rotating ring, and the outer cylinder wall of the connecting sleeve is coaxially fixedly connected to a ring base near the bottom position. The rotating ring is rotatably connected to the outer cylinder wall of the connecting sleeve, and two groups of symmetrically distributed second pull ropes are fixedly connected to the outer cylinder wall of the connecting sleeve. The end of each group of second pull ropes away from the rotating ring is fixedly connected to an auxiliary block, and each auxiliary block is provided with an auxiliary groove on the side close to the second pull rope. The bottom groove wall of the auxiliary groove is provided with a groove, and a pressure block is sealingly and slidingly connected in the groove, and the bottom of the pressure block is fixedly connected to multiple second springs.

[0009] Furthermore, a magnetic strip is embedded in the limit block, and the connecting sleeve is provided with a ring-shaped coil at the two movable grooves. A conductive sheet is embedded on the groove wall near the bottom of the groove, and a conductive block is embedded on the bottom of the pressure block near the conductive sheet. The conductive sheet and the conductive block are connected in series with the two coils through a wire and are electrically connected to an external power supply. A plurality of limit grooves are provided on the groove walls of the two slide grooves at equal distances.

[0010] Furthermore, each of the auxiliary blocks is provided with two symmetrically distributed clamping grooves on the groove walls on both sides of the auxiliary groove, and a clamping strip is sealingly and slidingly connected in each of the clamping grooves. Two liquid guide tubes are sealingly connected to the bottom groove wall of the groove, and the ends of the two liquid guide tubes away from the groove are respectively sealed and connected to the two clamping grooves. The groove is located in the space below the pressing block, and the liquid guide tubes and the clamping grooves are filled with hydraulic oil.

[0011] Furthermore, the inner ring surface of the rotating ring is provided with two symmetrically distributed movable grooves, each of the movable grooves is slidably connected with a clamping block, and each of the clamping blocks is fixedly connected to a conductive spring at one end located in the movable groove, and the end of the conductive spring away from the clamping block is fixedly connected to the inner groove wall of the movable groove, and a plurality of clamping grooves are provided on the outer cylinder wall of the connecting sleeve in the form of a ring array.

[0012] Furthermore, two propulsion fans are installed and fixedly connected on one side of each auxiliary block away from the second pull rope, and the wind directions of the two propulsion fans on the same auxiliary block are opposite.

[0013] Furthermore, the two groups of propulsion fans with opposite wind directions on the two auxiliary blocks are connected in series with control switches through wires, and the circuits where the two groups of propulsion fans are located are connected in parallel and are electrically connected to the two conductive springs and the external power supply.

[0014] The present invention has the following advantages:

[0015] The hoisting device in the present invention can automatically adjust the relative positions of the connecting column and the connecting sleeve according to steel structures of different lengths, so that both ends and the center of the steel structure are tied and hoisted with ropes. It will not tilt during high-altitude transportation, avoiding the risk of falling, and improving the high-altitude hoisting stability of large-span steel structures. At the same time, after the steel structure is hoisted to the sky above the designated area, the wind force generated by the propulsion fan can be used to push the steel structure back to rotate slowly in the air, adjust the hoisting angle of the steel structure, facilitate the placement and installation of the steel structure, and improve the hoisting and construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the large-span steel structure high-altitude lifting auxiliary device proposed by the present invention;

[0017] Figure 2 This is a cross-sectional view of the structure of the hoisting mechanism of the auxiliary device for high-altitude hoisting of large-span steel structures proposed by the present invention;

[0018] Figure 3 This is a structural cross-sectional view of the auxiliary block portion of the large-span steel structure high-altitude hoisting auxiliary device proposed by the present invention;

[0019] Figure 4 This is a side sectional view of the structure of the auxiliary block part of the large-span steel structure high-altitude lifting auxiliary device proposed by the present invention;

[0020] Figure 5 This is an enlarged schematic diagram of point A of the large-span steel structure high-altitude hoisting auxiliary device proposed by the present invention;

[0021] Figure 6 This is the circuit diagram of the large-span steel structure high-altitude lifting auxiliary device proposed by the present invention.

[0022] In the figure: 1 lifting block, 2 lifting rope, 3 fixed pulley, 4 connecting rope, 5 connecting sleeve, 6 connecting column, 7 annular base, 8 rotating ring, 9 first pull rope, 10 safety buckle, 11 second pull rope, 12 auxiliary block, 13 slide groove, 14 movable groove, 15 limit block, 16 first spring, 17 auxiliary groove, 18 groove, 19 pressure block, 20 second spring, 21 conductive sheet, 22 conductive block, 23 limit groove, 24 coil, 25 clamping groove, 26 clamping strip, 27 liquid guide tube, 28 push fan, 29 movable groove, 30 clamping block, 31 conductive spring, 32 clamping groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are only for illustrative purposes and are not intended to limit the scope of the present invention.

[0024] Reference Figure 1-5An auxiliary device for high-altitude lifting of large-span steel structures includes a lifting block 1 and a cylindrical connecting sleeve 5. Multiple lifting ropes 2 are fixedly connected to the middle position of the upper end surface of the lifting block 1. Two symmetrically distributed fixed pulleys 3 are fixedly connected to the bottom of the lifting block 1. A connecting rope 4 is fixedly connected to the two symmetrical positions of the upper end of the connecting sleeve 5. A connecting column 6 is slidably connected to the inner wall of the connecting sleeve 5. The ends of the two connecting ropes 4 away from the connecting sleeve 5 are respectively wrapped around the two fixed pulleys 3 and are fixedly connected to the top of the connecting column 6. A lifting mechanism and an auxiliary mechanism are provided on the connecting sleeve 5.

[0025] The lifting mechanism includes multiple first pull ropes 9, which are fixedly connected to the bottom of the connecting column 6. Each first pull rope 9 is fixedly connected to a safety buckle 10 at one end away from the connecting column 6. Two symmetrically distributed slide grooves 13 are provided on the connecting column 6, and two symmetrically distributed movable grooves 14 are provided on the inner cylinder wall of the connecting sleeve 5. A limiting block 15 is slidably connected in each movable groove 14. Each limiting block 15 is located in the movable groove 14 and is fixedly connected to a first spring 16 at one end. The end of the first spring 16 away from the limiting block 15 is fixedly connected to the inner groove wall of the movable groove 14. The two limiting blocks 15 are located outside the movable groove 14 and are slidably connected to the two slide grooves 13 respectively.

[0026] The auxiliary mechanism includes a rotating ring 8, an outer cylinder wall of the connecting sleeve 5 and a coaxially fixed annular base 7 near the bottom position, the rotating ring 8 is rotatably connected to the outer cylinder wall of the connecting sleeve 5, and the outer cylinder wall of the connecting sleeve 5 is fixedly connected to two groups of symmetrically distributed second pull ropes 11, and each group of second pull ropes 11 is fixedly connected to an auxiliary block 12 at one end away from the rotating ring 8. Each auxiliary block 12 is provided with an auxiliary groove 17 on the side close to the second pull rope 11, and a groove 18 is provided on the bottom groove wall of the auxiliary groove 17, and a sealing sliding connection is provided in the groove 18. The pressure block 19 has a plurality of second springs 20 fixedly connected to the bottom of the pressure block 19, a magnetic strip is embedded in the limit block 15, and the connecting sleeve 5 is provided with a coil 24 in an annular shape at the two movable grooves 14. A conductive sheet 21 is embedded on the groove wall on the side close to the bottom of the groove 18, and a conductive block 22 is embedded on the side close to the conductive sheet 21 of the bottom of the pressure block 19. The conductive sheet 21 and the conductive block 22 are connected in series with the two coils 24 through a wire and are electrically connected to the external power supply. A plurality of limit grooves 23 are provided on the groove walls of the two slide grooves 13 at equal distances.

[0027] Each auxiliary block 12 is located on the two side walls of the auxiliary groove 17 and has two symmetrically distributed clamping grooves 25. A clamping strip 26 is sealed and slidably connected in each clamping groove 25. Two liquid guide tubes 27 are sealed and connected to the bottom groove wall of the groove 18. The two liquid guide tubes 27 are sealed and connected to the two clamping grooves 25 at one end away from the groove 18. The groove 18 is located in the space below the pressure block 19, and the liquid guide tubes 27 and the clamping grooves 25 are filled with hydraulic oil. When the auxiliary block 12 supports the two ends of the steel structure, the pressure block 19 is squeezed by the gravity of the steel structure, and the clamping strip 26 is pushed by hydraulic transmission to clamp the steel structure, thereby improving the stability of the steel structure during high-altitude lifting.

[0028] Two symmetrically distributed movable grooves 29 are provided on the inner ring surface of the rotating ring 8, and a card block 30 is slidably connected in each movable groove 29. One end of each card block 30 located in the movable groove 29 is fixedly connected to a conductive spring 31, and the end of the conductive spring 31 away from the card block 30 is fixedly connected to the inner groove wall of the movable groove 29. A plurality of card slots 32 are provided on the outer cylinder wall of the connecting sleeve 5 in a circular array. Two push fans 28 are installed and fixedly connected on the side of each auxiliary block 12 away from the second pull rope 11. The wind directions of the two push fans 28 on the same auxiliary block 12 are opposite. The two groups of push fans 28 with opposite wind directions on the two auxiliary blocks 12 are connected in series with control switches through wires. The circuits of the two groups of push fans 28 are connected in parallel with each other and are electrically connected to the two conductive springs 31 and the external power supply.

[0029] The circuit diagram of the present invention is as follows Figure 6 As shown, the external power supply is set to s1, the conductive sheet 21 and the conductive block 22 are set to s2, the coil 24 is set to s3, the two conductive springs 31 are set to s4, the control switch is set to s5, and the two sets of push fans 28 are set to s6. When one of the control switches is turned on, one of the push fans 28 on the two auxiliary blocks 12 is powered on and the wind directions of the push fans 28 are opposite.

[0030] When the device of this embodiment is in use, the lifting block 1 is first lowered to the steel structure by releasing the lifting rope 2, and then multiple first pull ropes 9 are passed through the steel structure to be tied, and the two auxiliary blocks 12 are pulled to the two ends of the steel structure respectively, so that the two ends of the steel structure are placed in the auxiliary grooves 17 of the two auxiliary blocks 12. Then, the lifting block 1 is pulled up. Since the mass of the connecting sleeve 5 and the rotating ring 8 is greater than the connecting column 6, when the first pull rope 9 and the second pull rope 11 are not straightened by force, the lifting block 1 will pull the connecting column 6 to rise first during the rising process, and the two limit blocks 15 will slide to the bottom of the slide groove 13. As the lifting block 1 and the connecting column 6 continue to rise, after the first pull rope 9 becomes straightened, it is equivalent to the tension of the end of the connecting rope 4 close to the connecting column 6 being greater than the end of the connecting sleeve 5. The connecting column 6 will stop rising, and the connecting rope 4 will pull the connecting sleeve 5 to move upward, causing the limit block 15 to slide up in the slide groove 13. As the connecting sleeve 5 slides up, the second pull rope 11 will become straightened In this state, the pressure block 19 on the auxiliary block 12 will counteract the steel structure, and the gravity at both ends of the steel structure will squeeze the pressure block 19 to slide down, so that the conductive block 22 on the pressure block 19 will contact the conductive sheet 21 on the wall of the groove 18, and the circuit where the coil 24 is located will be energized. After the coil 24 is energized, a magnetic field is formed in the movable groove 14, and the electromagnetic force pushes the limit block 15 with the magnetic strip to slide into the limit groove 23 corresponding to the connecting column 6 at the position, so that the connecting column 6 and the connecting sleeve 5 are fixed. In this state, the first pull rope 9 and the second pull rope 11 are both in a taut state, so that the lifting device can automatically adjust the relative position of the connecting column 6 and the connecting sleeve 5 according to steel structures of different lengths, maintain the lifting effect of the first pull rope 9 and the second pull rope 11, and the two ends and the center of the steel structure are tied or lifted with ropes, so that the steel structure will not tilt during high-altitude transportation, avoid the risk of falling, and improve the high-altitude lifting stability of large-span steel structures.

[0031] After the steel structure is hoisted to the sky above the designated area, one of the push fans 28 can be powered by controlling the switch. When the circuit is turned on, the two conductive springs 31 will also be energized and contracted, pulling the clamping block 30 to slide out of the clamping slot 32, releasing the rotation restriction of the rotating ring 8, and at the same time, the push fans 28 on the two auxiliary blocks 12 will rotate and work, with the help of the wind force generated by the push fans 28, the steel structure is pushed back to rotate slowly in the air, adjusting the hoisting angle of the steel structure, facilitating the placement and installation of the steel structure, and improving the efficiency of hoisting and construction.

[0032] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An auxiliary device for high-altitude hoisting of a large-span steel structure, comprising a hoisting block (1) and a cylindrical connecting sleeve (5), characterized in that: A plurality of lifting ropes (2) are fixedly connected to the middle position of the upper end surface of the lifting block (1), two symmetrically distributed fixed pulleys (3) are fixedly connected to the bottom of the lifting block (1), a connecting rope (4) is fixedly connected to two symmetrical positions on the upper end of the connecting sleeve (5), and a connecting column (6) is slidably connected to the inner wall of the connecting sleeve (5), and the ends of the two connecting ropes (4) away from the connecting sleeve (5) are respectively wound around the two fixed pulleys (3) and fixedly connected to the top of the connecting column (6) together, and a lifting mechanism and an auxiliary mechanism are provided on the connecting sleeve (5); The hoisting mechanism includes a plurality of first pull ropes (9), and the plurality of first pull ropes (9) are fixedly connected to the bottom of the connecting column (6). The end of each first pull rope (9) away from the connecting column (6) is fixedly connected to a safety buckle (10). The connecting column (6) is provided with two symmetrically distributed sliding grooves (13). The inner cylinder wall of the connecting sleeve (5) is provided with two symmetrically distributed moving grooves (14). Each of the moving grooves (14) is slidably connected to a limiting block (15). Each of the limiting blocks (15) is located in the moving groove (14) and is fixedly connected to a first spring (16) at one end. The end of the first spring (16) away from the limiting block (15) is fixedly connected to the inner groove wall of the moving groove (14). The ends of the two limiting blocks (15) located outside the moving groove (14) are slidably connected to the two sliding grooves (13) respectively. The auxiliary mechanism includes a rotating ring (8), an annular base (7) is coaxially fixedly connected to the outer cylinder wall of the connecting sleeve (5) and near the bottom position, the rotating ring (8) is rotatably connected to the outer cylinder wall of the connecting sleeve (5), two groups of symmetrically distributed second pull ropes (11) are fixedly connected to the outer cylinder wall of the connecting sleeve (5), and an auxiliary block (12) is fixedly connected to the end of each group of second pull ropes (11) away from the rotating ring (8), and each auxiliary block (12) is provided with an auxiliary groove (17) on a side close to the second pull rope (11), and a groove (18) is provided on the bottom groove wall of the auxiliary groove (17), and a pressure block (19) is sealingly and slidably connected in the groove (18), and a plurality of second springs (20) are fixedly connected to the bottom of the pressure block (19).

2. The large-span steel structure high-altitude hoisting auxiliary device according to claim 1 is characterized in that: A magnetic strip is embedded in the limit block (15); an annular coil (24) is provided at each of the two movable grooves (14) of the connecting sleeve (5); a conductive sheet (21) is embedded on the groove wall of the groove (18) near the bottom; a conductive block (22) is embedded on the bottom of the pressing block (19) near the conductive sheet (21); the conductive sheet (21) and the conductive block (22) are connected in series with the two coils (24) via a wire and are electrically connected to an external power supply; a plurality of limit grooves (23) are provided on the groove walls of the two slide grooves (13) at equal distances.

3. The large-span steel structure high-altitude hoisting auxiliary device according to claim 2 is characterized in that: Each of the auxiliary blocks (12) is provided with two symmetrically distributed clamping grooves (25) on the groove walls on both sides of the auxiliary groove (17). A clamping strip (26) is sealed and slidably connected in each of the clamping grooves (25). Two liquid guide tubes (27) are sealed and connected to the bottom groove wall of the groove (18). One end of the two liquid guide tubes (27) away from the groove (18) is sealed and connected to the two clamping grooves (25). The groove (18) is located in the space below the pressing block (19), and the liquid guide tubes (27) and the clamping groove (25) are filled with hydraulic oil.

4. The large-span steel structure high-altitude hoisting auxiliary device according to claim 3 is characterized in that: The inner ring surface of the rotating ring (8) is provided with two symmetrically distributed movable grooves (29), each of the movable grooves (29) is slidably connected with a clamping block (30), and one end of each clamping block (30) located in the movable groove (29) is fixedly connected with a conductive spring (31), and the end of the conductive spring (31) away from the clamping block (30) is fixedly connected to the inner groove wall of the movable groove (29), and a plurality of clamping grooves (32) are provided on the outer cylinder wall of the connecting sleeve (5) in the form of a ring array.

5. The large-span steel structure high-altitude hoisting auxiliary device according to claim 4 is characterized in that: Two propulsion fans (28) are fixedly mounted on one side of each auxiliary block (12) away from the second pull rope (11), and the wind directions of the two propulsion fans (28) on the same auxiliary block (12) are opposite.

6. The large-span steel structure high-altitude hoisting auxiliary device according to claim 5 is characterized in that: The two groups of propulsion fans (28) with opposite wind directions on the two auxiliary blocks (12) are both connected in series with a control switch via a wire. The circuits of the two groups of propulsion fans (28) are connected in parallel with each other and are electrically connected to two conductive springs (31) and an external power supply.

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