Hoisting equipment for hoisting steel-concrete combined section and working method of hoisting equipment

Abstract

The invention discloses steel-concrete combined section hoisting equipment and a working method thereof.The steel-concrete combined section hoisting equipment comprises a hoisting vehicle and a telescopic arm arranged on the hoisting vehicle and further comprises a first winding mechanism and a second winding mechanism, the first winding mechanism is connected with a hoisting head mechanism through a third steel cable and used for hoisting a steel-concrete combined section, and the hoisting head mechanism comprises a steel groove body; an inner groove is formed in the bottom face of the steel groove body upwards, folding rods are rotationally connected to the two sides of the bottom of the inner groove correspondingly, and the folding rods can be stored in the inner groove, so that a steel-concrete combined section is successfully, conveniently, flexibly and stably hoisted when a shelter portal is arranged above a target position design mounting position; and meanwhile, the steel-concrete combined sections can be fixed to the two sides of the folding rod through the mounting rods, and the steel-concrete combined sections can serve as balancing weights, so that the steel tank body is more stable when the steel tank body is hoisted or the folding rod is unfolded, the hoisting efficiency of the steel-concrete combined sections is improved, and energy consumption in the hoisting process is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, and in particular to a hoisting device for a steel-concrete combined section and a working method thereof. Background Art

[0002] The steel-concrete combined section is a prefabricated bridge deck, which is widely used in bridge construction. Among them, the installation of the steel-concrete combined section using lifting equipment is an important process in bridge construction.

[0003] At present, under normal circumstances, the steel-concrete combined section is connected to the pre-buried lifting block on it by a steel cable, and the other end of the steel cable is hung on the lifting hook of the lifting equipment, and the steel-concrete combined section is directly lifted to the designed installation position by the lifting equipment.

[0004] However, a gantry is often installed above the designed installation position of the steel-concrete combination section. If it is removed, in addition to increasing the labor intensity, after the steel-concrete combination section is hoisted to the designed installation position, the gantry needs to be reinstalled to assist in the further installation of the steel-concrete combination section. Therefore, the current lifting and hoisting equipment is difficult to directly hoist the steel-concrete combination section when the space above the designed installation position is restricted. The hoisting efficiency is low, the application scenarios are limited, and it cannot be universally used. Summary of the invention

[0005] The object of the present invention is to provide a lifting and hoisting device for steel-concrete combined section and a working method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A lifting and hoisting device for a steel-concrete joint section, comprising a lifting vehicle and a telescopic arm arranged thereon, and also comprising a first winding mechanism and a second winding mechanism, wherein the first winding mechanism is connected to a hoisting head mechanism via a third steel cable, and is used for lifting and hoisting the steel-concrete joint section;

[0008] The lifting head mechanism comprises a steel trough body, the bottom surface of the steel trough body is provided with an inner trough facing upwards, both sides of the bottom of the inner trough are rotatably connected with stacking rods, both sides of the inner top surface of the inner trough are fixedly connected with connecting lifting ears, both sides of the top surface of the steel trough body are provided with top mounting blocks, a top rotating shaft is fixedly connected between the two top mounting blocks, a first pulley is rotatably connected to the middle section of the top rotating shaft, two bottom through-holes penetrating to the top surface of the steel trough body are symmetrically provided on the inner top surface of the inner trough, and a top through-hole is provided at the top rotating shaft located directly above the bottom through-hole;

[0009] The end of the stacked rod away from the bottom of the inner groove is rotatably connected to a second pulley, and the bottom surface of the stacked rod is fixedly connected to a plurality of mounting rods for connecting the steel-concrete joint section;

[0010] The two connecting lifting ears are detachably connected with a first steel cable and a second steel cable respectively. The first steel cable and the second steel cable respectively pass through the second pulleys on the two stacked rods, pass through the bottom through-hole and the top through-hole, and are finally wound up by the second winding mechanism.

[0011] A second fixed pulley is arranged on the top of the telescopic arm, one end of the third steel cable is fixedly connected to the telescopic arm, and the third steel cable is wound up by the first winding mechanism after passing through the first pulley and the second fixed pulley.

[0012] Preferably, the first winding mechanism and the second winding mechanism are both arranged on the telescopic arm, and the first winding mechanism and the second winding mechanism both include a first drum and a first servo motor. A first fixed pulley and a third fixed pulley are also arranged on the top of the telescopic arm. The first steel cable and the second steel cable are respectively wound up by the second winding mechanism after passing through the first fixed pulley and the third fixed pulley. The rotation of the output end of the first servo motor in the first winding mechanism drives the corresponding first drum to rotate so as to wind up the third steel cable to lift the steel trough body. The rotation of the output end of the first servo motor in the second winding mechanism drives the corresponding first drum to rotate so as to simultaneously wind up the first steel cable and the second steel cable to pull the two stacked rods into the inner trough.

[0013] Preferably, the first winding mechanism includes a first drum and a first servo motor arranged on the telescopic arm, the rotation of the output end of the first servo motor drives the first drum to rotate so as to wind up the third steel cable passing through the first pulley and the second fixed pulley, the second winding mechanism includes a top steel plate arranged on the top surface of the top mounting block, the outer wall of the top steel plate is provided with a second servo motor, the output end of the second servo motor is fixedly connected with a connecting shaft, and the connecting shaft is sleeved with a second drum, the rotation of the output end of the second servo motor drives the connecting shaft and the second drum to rotate so as to simultaneously wind up the first steel cable and the second steel cable passing through the bottom through-hole and the top through-hole.

[0014] Preferably, a bottom rotating shaft is symmetrically arranged on the lower inner side wall of the inner trough, and a rotating opening is opened at one end of the stacked rod close to the bottom of the steel trough body, and the bottom rotating shaft is placed in the rotating opening.

[0015] Preferably, an end slot is provided at one end of the stacking rod away from the bottom of the steel trough body, a steel shaft is arranged in the end slot, the second pulley is rotatably connected to the steel shaft, a through opening is provided in the middle section of the stacking rod, a plurality of fixing openings are provided at the bottom of the through opening, a bottom fixing opening is provided in the middle section of the mounting rod, the stacking rod and the mounting rod are fixedly connected by fasteners, bottom fixing openings and fixing openings, the fasteners include secondary bolts and secondary nuts, the secondary bolts penetrate from the bottom of the mounting rod into the bottom fixing opening, the fixing opening and into the through opening, the secondary nut is threadedly connected with the secondary bolt in the through opening to fasten the stacking rod and the mounting rod.

[0016] Preferably, both ends of the mounting rod are provided with mounting openings, the top surface of the steel-concrete combination section is pre-arranged with a plurality of threaded rods, the threaded rods are threadedly connected with fastening nuts, the threaded rods are inserted into the mounting openings from the bottom surface of the mounting rod, and the fastening nuts are threadedly connected with the threaded rods on the top surface of the mounting rod to fix the steel-concrete combination section on the mounting rod.

[0017] A working method for lifting and hoisting equipment for a steel-concrete combination section, comprising the following steps: Step 1: fix two steel-concrete combination sections to the bottom surfaces of the mounting rods on both sides of a steel trough through threaded rods and fastening nuts respectively; Step 2: start the first servo motor or the second servo motor for controlling the winding of the first steel cable and the second steel cable, and retract the stacked rods on both sides of the steel trough into the inner trough; Step 3: start the hoisting vehicle and the telescopic arm, cooperate with the first servo motor for starting the winding of the third steel cable, lift the steel trough and lower it from the gap of the obstruction (gantry) to the target position (designed installation position); Step 4: after the steel trough passes through the gap of the obstruction (gantry), start the first servo motor for controlling the winding of the first steel cable and the second steel cable, and then lower it to the target position (designed installation position). A servo motor or a second servo motor is rotated in the opposite direction, so that the two stacked rods are slowly flattened at the same time, so that the steel trough body remains stable; Step 5: Install the steel-concrete combination section located directly above the target position (design installation position), and gradually remove the fastening nuts from the threaded rods, and remove the other steel-concrete combination section on the bridge deck from the installation rod; Step 6: Put the stacked rods on both sides of the steel trough body into the inner groove, and return along the original route, repeat the above operation, after installing the steel-concrete combination section twice, there will be two steel-concrete combination sections on the bridge deck, which can be installed on the installation rods on both sides of the steel trough body, and one of the steel-concrete combination sections will be hoisted to the next target position (design installation position).

[0018] The beneficial effects of the present invention are as follows: the equipment utilizes the stacking rod, the first steel cable, and the first and second winding mechanisms, etc., and utilizes the stacking rod that can be retracted into the inner groove, so that the space required for the steel trough body when carrying the steel-concrete combination section through the shielding gantry is smaller, and the deployment of the stacking rod can place the steel-concrete combination section at the target position, successfully realizing the convenient and flexible stable lifting of the steel-concrete combination section when there is a shielding gantry above the target position, and at the same time, the steel-concrete combination section can be fixed on both sides of the stacking rod by installing rods, and the steel-concrete combination section can be used as a counterweight block, which not only makes the steel trough body more stable during lifting or the stacking rod when it is deployed, but also lifts two steel-concrete combination sections each time, thereby improving the lifting efficiency of the steel-concrete combination sections, and there is no need to set up a separate counterweight block to lift it back and forth to consume energy, thereby saving energy consumption during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the lifting head mechanism in the present invention;

[0022] Figure 3 It is a structural schematic diagram of the hoisting head mechanism in the present invention in a folded state;

[0023] Figure 4 It is a structural schematic diagram of the hoisting head mechanism in the present invention in an unfolded state;

[0024] Figure 5 It is a schematic diagram of the structure of the stacking rod and the installation rod in the present invention;

[0025] Figure 6 is a cross-sectional view of the lifting head mechanism of the present invention;

[0026] Figure 7 It is a schematic diagram of the connection between the second winding mechanism and the hoisting head mechanism in the present invention;

[0027] Figure 8 It is a schematic diagram of the connection between the first steel cable, the second steel cable, the third steel cable and the hoisting head mechanism in the present invention;

[0028] Fig. 9 yes Figure 8 A magnified schematic diagram of center A.

[0029] In the figure: 1. Steel tank body; 101. Inner tank; 102. Bottom rotating shaft; 103. Connecting lug; 104. Top mounting block; 105. Top rotating shaft; 106. First pulley; 107. Bottom through hole; 108. Top through hole; 2. Stacking rod; 201. End notch; 202. Second pulley; 203. Steel shaft; 204. Through hole; 205. Fixing hole; 206. Rotating hole; 3. Mounting rod; 301. Mounting hole; 302. Bottom fixing hole; 30 3. Fasteners; 4. Steel-concrete joint section; 401. Threaded rod; 402. Fastening nut; 5. First steel cable; 501. Second steel cable; 6. Third steel cable; 7. Hoisting vehicle; 701. Telescopic arm; 702. First drum; 703. First servo motor; 704. First fixed pulley; 705. Second fixed pulley; 706. Third fixed pulley; 8. Top steel plate; 801. Second servo motor; 802. Connecting shaft; 803. Second drum. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Reference Figure 1-9 As shown, the present invention is a lifting and hoisting equipment for steel-concrete combined sections, including a lifting vehicle 7 and a telescopic arm 701 arranged thereon, and also including a first winding mechanism and a second winding mechanism. The first winding mechanism is connected to a lifting head mechanism through a third steel cable 6, and is used for lifting and hoisting the steel-concrete combined section 4. Among them, the lifting vehicle 7 and the telescopic arm 701 are both existing technologies in this field and will not be described in detail here.

[0032] Reference Figure 2 As shown, the lifting head mechanism includes a steel tank body 1, the bottom surface of the steel tank body 1 is provided with an inner tank 101 facing upward, both sides of the bottom of the inner tank 101 are rotatably connected with stacking rods 2, both sides of the inner top surface of the inner tank 101 are fixedly connected with connecting ears 103, both sides of the top surface of the steel tank body 1 are provided with top mounting blocks 104, a top rotating shaft 105 is fixedly connected between the two top mounting blocks 104, the middle section of the top rotating shaft 105 is rotatably connected with a first pulley 106, the inner top surface of the inner tank 101 is symmetrically provided with two bottom through-holes 107 penetrating to the top surface of the steel tank body 1, and the top rotating shaft 105 is provided with a top through-hole 108 directly above the bottom through-hole 107, refer to Figure 6 As shown, two top-penetrating openings 108 are provided and are located on both sides of the first pulley 106 .

[0033] Reference Figure 4 As shown, further, one end of the stacking rod 2 away from the bottom of the inner groove 101 is rotatably connected to the second pulley 202, and the bottom surface of the stacking rod 2 is fixedly connected to a plurality of mounting rods 3 for connecting the steel-concrete joint section 4.

[0034] Reference Figure 8 As shown, further, the two connecting ears 103 are detachably connected to the first steel cable 5 and the second steel cable 501, wherein it should be noted that the first steel cable 5 and the second steel cable 501 can be fixed to the connecting ear 103 by bolting. Figure 3 As shown, the first steel cable 5 and the second steel cable 501 respectively pass through the second pulleys 202 on the two stacked rods 2, then pass through the bottom through-hole 107 and the top through-hole 108 and are finally wound up by the second winding mechanism, including unwinding.

[0035] Furthermore, a second fixed pulley 705 is provided on the top of the telescopic arm 701, one end of the third steel cable 6 is fixedly connected to the telescopic arm 701, and the third steel cable 6 passes through the first pulley 106 and the second fixed pulley 705 and is then reeled by the first reeling mechanism, including unreeling.

[0036] Through the arrangement of the stacking rod 2, the first steel cable 5 and the first and second winding mechanisms, etc., the stacking rod 2 can be retracted into the inner groove 101, so that the steel trough body 1 requires less space when carrying the steel-concrete combination section 4 through the obstruction gantry, and the deployment of the stacking rod 2 can place the steel-concrete combination section 4 at the target position, successfully realizing the convenient and flexible stable lifting of the steel-concrete combination section 4 when there is an obstruction gantry above the target position. At the same time, both sides of the stacking rod 2 can be fixed with the steel-concrete combination section 4 by the installation rod 3, and the steel-concrete combination section 4 can be used as a counterweight block, which not only makes the steel trough body 1 more stable during lifting or the stacking rod 2 when it is deployed, but also two steel-concrete combination sections 4 are lifted each time, thereby improving the lifting efficiency of the steel-concrete combination section 4, and there is no need to set up a separate counterweight block to lift it back and forth to consume energy, thereby saving energy consumption during the lifting process.

[0037] In an optional embodiment, the first and second winding mechanisms are both arranged on the telescopic arm 701, and both include a first drum 702 and a first servo motor 703. The top of the telescopic arm 701 is also provided with a first fixed pulley 704 and a third fixed pulley 706. The first steel cable 5 and the second steel cable 501 are respectively wound up by the second winding mechanism after passing through the first fixed pulley 704 and the third fixed pulley 706. The rotation of the output end of the first servo motor 703 in the first winding mechanism drives the corresponding first drum 702 to rotate, so as to wind up and unwind the third steel cable 6 to lift and lower the steel tank body 1. The rotation of the output end of the first servo motor 703 in the second winding mechanism drives the corresponding first drum 702 to rotate, so as to simultaneously wind up and unwind the first steel cable 5 and the second steel cable 501 to pull the two stacked rods 2 into and lower them into the inner groove 101.

[0038] By arranging both the first and second winding mechanisms on the telescopic wall 701, unified control is facilitated and installation is convenient.

[0039] In an optional embodiment, the first winding mechanism includes a first reel 702 and a first servo motor 703 disposed on the telescopic arm 701. The rotation of the output end of the first servo motor 703 drives the first reel 702 to rotate, so as to wind up and unwind the third steel cable 6 passing through the first pulley 106 and the second fixed pulley 705. Figure 7 As shown, the second winding mechanism includes a top steel plate 8 arranged on the top surface of the top mounting block 104, wherein there are two top steel plates 8, and the outer side walls of the top steel plates 8 are each provided with a second servo motor 801, and the output end of the second servo motor 801 is fixedly connected with a connecting shaft 802, wherein the connecting shaft 802 passes through the top steel plate 8, and a second reel 803 is sleeved on the connecting shaft 802. The rotation of the output end of the second servo motor 801 drives the connecting shaft 802 and the second reel 803 to rotate, so as to simultaneously wind up and unwind the first steel cable 5 and the second steel cable 501 passing through the bottom through-hole 107 and the top through-hole 108.

[0040] By arranging the second winding mechanism on the top mounting block 104, the lengths of the first steel cable 5 and the second steel cable 501 are greatly shortened, thereby avoiding mutual interference between the first steel cable 5, the second steel cable 501 and the third steel cable 6, thereby preventing the stability of the lifting and hoisting from being affected.

[0041] Reference Figure 4 and Figure 5 As shown, in an optional embodiment, a bottom rotating shaft 102 is symmetrically arranged on the lower inner side wall of the inner tank 101 , a rotating opening 206 is opened at one end of the stacking rod 2 close to the bottom of the steel tank body 1 , and the bottom rotating shaft 102 is placed in the rotating opening 206 .

[0042] Reference Figure 5 As shown, in an optional embodiment, an end notch 201 is provided at one end of the stacking rod 2 away from the bottom of the steel tank body 1, a steel shaft 203 is arranged in the end notch 201, and the second pulley 202 is rotatably connected on the steel shaft 203. A through hole 204 is provided in the middle section of the stacking rod 2, and a plurality of fixing holes 205 are provided at the bottom of the through hole 204. A bottom fixing hole 302 is provided in the middle section of the mounting rod 3. The stacking rod 2 and the mounting rod 3 are fixedly connected by the fastener 303, the bottom fixing hole 302 and the fixing hole 205. The fastener 303 includes a secondary bolt and a secondary nut. The secondary bolt penetrates the bottom fixing hole 302 and the fixing hole 205 from the bottom of the mounting rod 3 and enters the through hole 204. The secondary nut is threadedly connected with the secondary bolt in the through hole 204 to fasten the stacking rod 2 and the mounting rod 3. The provision of the through hole 204 facilitates manual threading of the secondary nut with the secondary bolt, making the fastening operation of the stacking rod 2 and the mounting rod 3 more convenient.

[0043] Reference Figure 5 and Figure 8 , Fig. 9 As shown, in an optional embodiment, both ends of the mounting rod 3 are provided with mounting openings 301, the top surface of the steel-concrete combination section 4 is pre-set with a plurality of threaded rods 401, the threaded rods 401 are threadedly connected with fastening nuts 402, the threaded rods 401 penetrate into the mounting openings 301 from the bottom surface of the mounting rod 3, and the fastening nuts 402 are threadedly connected with the threaded rods 401 on the top surface of the mounting rod 3 to fix the steel-concrete combination section 4 on the mounting rod 3. It should be noted that the mounting rod 3 is used to connect with the steel-concrete combination section 4 is fixed, the steel-concrete combined section 4 is the lifting and hoisting object of the equipment, and a number of installation rods 3 are fixedly connected to the bottom surface of the stacked rod 2 at equal distances, and the stacked rod 2 is perpendicular to the installation rod 3, and the stacked rod 2 is located in the middle section of the installation rod 3, so that when the equipment is lifting and hoisting the steel-concrete combined section 4, the stacked rod 2 is located in the middle section of the steel-concrete combined section 4, so that the weight of the front and rear sides of the stacked rod 2 is balanced and will not tilt, so that the steel-concrete combined section 4 can be stably lifted to the target position and the steel-concrete combined section 4 can be installed.

[0044] Now the working principle of this equipment is explained through its working steps: Figure 1 As shown, the device is used to hoist the steel-concrete combination section 4 from the interval of the shielding object (door frame, etc.) to the target position (designed installation position), and the specific steps are as follows: first, the two steel-concrete combination sections 4 are respectively fixed to the bottom surfaces of the installation rods 3 on both sides of the steel tank body 1 through the threaded rods 401 and the fastening nuts 402, and then, the first servo motor 703 or the second servo motor 801 that controls the winding of the first steel cable 5 and the second steel cable 501 is started, so that the stacked rods 2 on both sides of the steel tank body 1 are both received into the inner groove 101 (wherein, it should be supplemented that the first steel cable 5 or the second servo motor 801 is driven by ... and the stacked rods 2 on both sides of the steel tank body 1 are both received into the inner groove 101 One end of the second steel cable 501 is fixed to the connecting ear 103, and the other end is arranged on the second winding mechanism. When the second winding mechanism is started, the first servo motor 703 or the second servo motor 801 starts to rotate forward or reversely to drive the corresponding first reel 702 or the second reel 803 to rotate forward or reversely, and the other end of the first steel cable 5 and the second steel cable 501 is fixed to the first reel 702 or the second reel 803, thereby realizing the winding or unwinding of the first steel cable 5 and the second steel cable 501. In this process, the first fixed pulley 704 and the third fixed pulley 706 are The pulley 706 and the second pulley 202 are in a rotating state, which is a prior art and will not be described in detail here. Then, the hoisting vehicle 7 and the telescopic arm 701 are started. According to the actual conditions of the construction site, the first servo motor 703 controlling the winding of the third steel cable 6 is started to lift the steel trough 1 and lower it from the gap of the shielding door frame to the target position design installation position (the same is true for the winding or unwinding of the first steel cable 5 and the second steel cable 501). When the steel trough 1 passes through the gap of the shielding door frame, the first servo motor 703 controlling the winding of the first steel cable 5 and the second steel cable 501 is started. The servo motor 703 or the second servo motor 801 is rotated in the opposite direction, so that the two stacked rods 2 are slowly flattened at the same time, so that the steel trough body 1 remains stable, and then the steel-concrete combination section 4 located above the target position (designed installation position) is installed (the specific installation process is the existing technology and will not be described in detail here), and the fastening nuts 402 are gradually removed from the threaded rod 401, and the other steel-concrete combination section 4 located on the bridge deck is removed from the installation rod 3, and finally the stacked rods 2 on both sides of the steel trough body 1 are put into the inner groove 101 and return along the original route.

[0045] Repeat the above operation. After installing the steel-concrete joint section twice, there will be two steel-concrete joint sections 4 left on the bridge deck, which can be installed on the installation rods 3 on both sides of the steel trough body 1, and one of the steel-concrete joint sections 4 will be hoisted to the next target position design installation position.

[0046] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A lifting and hoisting device for a steel-concrete joint section, comprising a lifting vehicle (7) and a telescopic arm (701) arranged thereon, characterized in that: It also includes a first winding mechanism and a second winding mechanism, wherein the first winding mechanism is connected to a hoisting head mechanism via a third steel cable (6) and is used for hoisting the steel-concrete combined section (4); The lifting head mechanism comprises a steel trough body (1), the bottom surface of the steel trough body (1) is provided with an inner trough (101) facing upward, both sides of the bottom of the inner trough (101) are rotatably connected with stacking rods (2), both sides of the inner top surface of the inner trough (101) are fixedly connected with connecting ears (103), both sides of the top surface of the steel trough body (1) are provided with top mounting blocks (104), a top rotating shaft (105) is fixedly connected between the two top mounting blocks (104), a middle section of the top rotating shaft (105) is rotatably connected with a first pulley (106), the inner top surface of the inner trough (101) is symmetrically provided with two bottom through-holes (107) penetrating to the top surface of the steel trough body (1), and the top rotating shaft (105) is provided with a top through-hole (108) located directly above the bottom through-hole (107); One end of the stacked rod (2) away from the bottom of the inner groove (101) is rotatably connected to a second pulley (202), and a plurality of mounting rods (3) are fixedly connected to the bottom surface of the stacked rod (2) for connecting the steel-concrete joint section (4); The two connecting ears (103) are respectively detachably connected with a first steel cable (5) and a second steel cable (501); the first steel cable (5) and the second steel cable (501) respectively pass through the second pulleys (202) on the two stacked rods (2), pass through the bottom through-hole (107) and the top through-hole (108), and are finally wound up by the second winding mechanism; A second fixed pulley (705) is provided at the top of the telescopic arm (701), one end of the third steel cable (6) is fixedly connected to the telescopic arm (701), and the third steel cable (6) is wound up by the first winding mechanism after passing through the first pulley (106) and the second fixed pulley (705).

2. The lifting and hoisting equipment for steel-concrete joint section according to claim 1 is characterized in that: The first winding mechanism and the second winding mechanism are both arranged on the telescopic arm (701), and both of them include a first reel (702) and a first servo motor (703). The top of the telescopic arm (701) is also provided with a first fixed pulley (704) and a third fixed pulley (706). The first steel cable (5) and the second steel cable (501) are respectively wound up by the second winding mechanism after passing through the first fixed pulley (704) and the third fixed pulley (706). The rotation of the output end of the first servo motor (703) in the first winding mechanism drives the corresponding first reel (702) to rotate, so as to wind up the third steel cable (6) and lift the steel tank body (1). The rotation of the output end of the first servo motor (703) in the second winding mechanism drives the corresponding first reel (702) to rotate, so as to simultaneously wind up the first steel cable (5) and the second steel cable (501) and pull the two stacked rods (2) into the inner tank (101).

3. The lifting and hoisting equipment for steel-concrete joint section according to claim 1 is characterized in that: The first winding mechanism comprises a first drum (702) and a first servo motor (703) arranged on the telescopic arm (701); the rotation of the output end of the first servo motor (703) drives the first drum (702) to rotate so as to wind up the third steel cable (6) passing through the first pulley (106) and the second fixed pulley (705); the second winding mechanism comprises a top steel plate (8) arranged on the top surface of the top mounting block (104); the outer side wall of the top steel plate (8) is provided with a second servo motor (801); the output end of the second servo motor (801) is fixedly connected with a connecting shaft (802); the connecting shaft (802) is sleeved with a second drum (803); the rotation of the output end of the second servo motor (801) drives the connecting shaft (802) and the second drum (803) to rotate so as to simultaneously wind up the first steel cable (5) and the second steel cable (501) passing through the bottom through-hole (107) and the top through-hole (108).

4. The lifting and hoisting equipment for steel-concrete joint section according to claim 2 or 3, characterized in that: A bottom rotating shaft (102) is symmetrically arranged on the lower inner side wall of the inner trough (101), and a rotating opening (206) is opened at one end of the stacking rod (2) close to the bottom of the steel trough body (1), and the bottom rotating shaft (102) is placed in the rotating opening (206).

5. The hoisting equipment for steel-concrete joint section according to claim 2 or 3, characterized in that: An end notch (201) is provided at one end of the stacking rod (2) away from the bottom of the steel tank body (1), a steel shaft (203) is arranged in the end notch (201), the second pulley (202) is rotatably connected to the steel shaft (203), a through opening (204) is provided in the middle section of the stacking rod (2), a plurality of fixing openings (205) are provided at the bottom of the through opening (204), a bottom fixing opening (302) is provided in the middle section of the installation rod (3), and the stacking rod (2) is provided with a plurality of fixing openings (205) at the bottom of the through opening (204). The rod (2) and the mounting rod (3) are fixedly connected by means of a fastener (303), a bottom fixing opening (302) and a fixing opening (205). The fastener (303) comprises a secondary bolt and a secondary nut. The secondary bolt passes through the bottom fixing opening (302) and the fixing opening (205) from the bottom of the mounting rod (3) and enters the through opening (204). The secondary nut is threadedly connected with the secondary bolt in the through opening (204) to fasten the stacked rod (2) and the mounting rod (3).

6. The hoisting equipment for steel-concrete joint section according to claim 2 or 3, characterized in that: Both ends of the installation rod (3) are provided with installation openings (301); the top surface of the steel-concrete combination section (4) is pre-arranged with a plurality of threaded rods (401); the threaded rods (401) are threadedly connected with fastening nuts (402); the threaded rods (401) are inserted into the installation openings (301) from the bottom surface of the installation rod (3); the fastening nuts (402) are threadedly connected with the threaded rods (401) on the top surface of the installation rod (3) to fix the steel-concrete combination section (4) on the installation rod (3).

7. A working method for hoisting equipment for steel-concrete joint section according to claim 2 or 3, characterized in that: The following steps are involved: Step 1: fix the two steel-concrete combination sections (4) to the bottom surfaces of the mounting rods (3) on both sides of the steel tank body (1) respectively through threaded rods (401) and fastening nuts (402); Step 2: Start the first servo motor (703) or the second servo motor (801) for controlling the winding of the first steel cable (5) or the second steel cable (501), and retract the stacked rods (2) on both sides of the steel tank body (1) into the inner tank (101); Step 3: Start the hoisting vehicle (7) and the telescopic arm (701), cooperate with the first servo motor (703) for controlling the winding of the third steel cable (6), lift the steel tank body (1) and lower it to the target position (designed installation position) from the gap between the shielding object (gantry); Step 4: After the steel trough (1) passes through the gap of the obstruction (door frame), the first servo motor (703) or the second servo motor (801) controlling the first steel cable (5) or the second steel cable (501) is started and rotated in the opposite direction, so that the two stacked rods (2) are slowly and simultaneously flattened, so that the steel trough (1) remains stable; Step 5: Install the steel-concrete joint section (4) located directly above the target position (designed installation position), and gradually remove the fastening nut (402) from the threaded rod (401), and remove the other steel-concrete joint section (4) located on the bridge deck from the installation rod (3); Step 6: Put the stacked rods (2) on both sides of the steel trough (1) into the inner trough (101), and return to the original path, repeat the above operation, after installing the steel-concrete combined section (4) twice, there will be two steel-concrete combined sections (4) on the bridge deck, which can be installed on the installation rods (3) on both sides of the steel trough (1), and one of the steel-concrete combined sections (4) will be hoisted to the next target position (designed installation position).

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