Double-machine linkage lifting appliance

Abstract

A carrying pole beam comprises a left longitudinal beam, a right longitudinal beam and a cross beam connected between the two longitudinal beams, first U-shaped connecting grooves are outwards formed in the middles of the two longitudinal beams in the horizontal direction, and vertically-through groove holes with outward openings are formed in the first U-shaped connecting grooves; the lower joist is composed of a cross beam, second U-shaped connecting grooves are formed in the left end and the right end of the cross beam outwards in the horizontal direction, and vertically-through groove holes with outward openings are formed in the second U-shaped connecting grooves. The two slings comprise ropes and limiting heads fixed to the head ends and the tail ends of the ropes, and the head ends and the tail ends of the slings are clamped in the first U-shaped connecting grooves and the second U-shaped connecting grooves correspondingly. According to the utility model, carrying and hoisting of 60m and 70m box girders can be realized on the basis of the existing girder carrying machine, the cost is reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model provides a double-machine linkage lifting and hoisting device, belonging to the technical field of bridge lifting equipment. Background Art

[0002] At present, my country's high-speed railway is developing rapidly, among which the construction of large-span bridges is the future development trend. At present, the span of more and more high-speed railway lines has changed from the original 32m to 40m, and new high-speed railway construction equipment is needed to meet the use needs. Among them, the on-site handling and construction of prefabricated box beams is an important part of the construction of high-speed railways. The use of tire-type beam movers has become the main means in this construction process. At present, there are special beam movers for 40m box beams that can meet their beam moving requirements, and they are also compatible with the handling of 32m box beams. However, for the handling of 60m and 70m box beams, they can only be handled by larger-sized beam movers. The existing beam movers suitable for 40m box beams cannot meet their handling requirements. However, the use of larger-sized beam movers will undoubtedly lead to a sharp increase in costs. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a double-machine linkage lifting and hoisting device, which can realize the transportation and hoisting of 60m and 70m box beams based on the double-machine linkage of the existing beam moving machine, so that one machine can be used for multiple purposes, reducing costs and improving construction efficiency.

[0004] The technical solution adopted to achieve the above-mentioned purpose of the utility model is:

[0005] A double-machine linkage lifting and hoisting sling, comprising at least a sling and a shoulder pole beam, wherein two sets of slings are provided, respectively installed in two beam moving machines, and the two sets of slings are respectively arranged at the front end and the rear end of a box beam, and jointly lift the box beam; the sling comprises:

[0006] The shoulder pole beam comprises two left and right longitudinal beams and a cross beam connected between the two longitudinal beams. The ends of the two longitudinal beams are provided with lifting ears, which are connected to the movable pulley block of the lifting trolley through a pin shaft, and the two movable pulley blocks on a single lifting trolley are connected to the two lifting ears of the same longitudinal beam. The middle parts of the two longitudinal beams are provided with a first U-shaped connecting groove facing outward in the horizontal direction, and a slot hole penetrating from top to bottom and opening outward is provided in the first U-shaped connecting groove;

[0007] The lower supporting beam is composed of a cross beam, and the left and right ends of the cross beam are provided with second U-shaped connecting grooves facing outwards in the horizontal direction, and the second U-shaped connecting groove is provided with a slot hole that passes through from top to bottom and opens outwards, and the second U-shaped connecting groove corresponds to the first U-shaped connecting groove in the upper and lower positions;

[0008] Two slings are provided, including ropes and limit heads fixed at both ends of the ropes, and the two ends of the slings are respectively clamped in the first U-shaped connecting groove and the second U-shaped connecting groove, and are limited by the limit heads.

[0009] Furthermore, the shoulder pole beam is provided with two cross beams, and the two cross beams are welded and fixed to the two longitudinal beams.

[0010] Furthermore, a gasket is arranged on the top surface of the lower supporting beam, and the box beam is placed on the gasket of the lower supporting beam.

[0011] Furthermore, the widths of the shoulder beam and the lower supporting beam are both smaller than the width of the top surface of the box beam, and larger than the width of the bottom surface of the box beam, so that the sling as a whole can pass through the reserved hole on the box beam.

[0012] Compared with the prior art, the double-machine linkage lifting and hoisting sling provided by the utility model has the following advantages: 1. The double-machine linkage lifting and hoisting sling provided by the utility model can make the existing double-machine linkage lifting and hoisting machine jointly realize the handling and hoisting of 60m and 70m box beams, so that one machine can be used for multiple purposes and reduce costs. 2. The double-machine linkage lifting and hoisting sling provided by the utility model can be installed very conveniently and quickly during hoisting because the limit heads are set at both ends of the rope. The limit heads cooperate with the U-shaped connecting grooves on the shoulder beam and the lower supporting beam, avoiding the need to adopt the nut tightening method in the existing hoisting mode, saving time and effort. 3. The double-machine linkage lifting and hoisting adopted in the utility model can lift and hoist box beams of different lengths. There is no need to set special hoisting holes on the box beam, and the hoisting and beam moving methods are flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the double-machine linkage lifting and hoisting device in the utility model;

[0014] Figure 2 for Figure 1 Side view of

[0015] Figure 3 It is the top view of the shoulder pole beam;

[0016] Figure 4 This is the main view of the shoulder pole beam;

[0017] Figure 5 It is the side view of the shoulder pole beam;

[0018] Figure 6 This is a top view of the lower joist;

[0019] Figure 7 This is the main view of the lower joist;

[0020] Figure 8 It is the side view of the lower joist;

[0021] Fig. 9 This is a schematic diagram of the use status of the double-machine linkage lifting and hoisting sling in the utility model;

[0022] Fig.10 for Fig. 9 Side view of

[0023] In the figure: 1-beam moving machine, 2-crane, 3-movable pulley block, 4-box beam, 5-lifting lug, 101-shoulder beam, 102-first U-shaped connecting groove, 103-lower supporting beam, 104-second U-shaped connecting groove, 105-sling, 106-limiting head, 107-gasket. DETAILED DESCRIPTION

[0024] The present invention is described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following embodiments.

[0025] The utility model provides a double-machine linkage lifting and hoisting device, the structure of which is as follows: Figure 1-Figure 10 As shown, two sets of lifting devices are provided, which are respectively installed in two beam moving machines 1, and the two sets of lifting devices are respectively arranged at the front end and the rear end of the box beam 4 to lift the box beam 4 together, as shown in FIG. Fig.10 shown.

[0026] The structure of the shoulder pole beam 101 in the sling is shown in FIG. Figure 3-Figure 5 , including two left and right longitudinal beams and a crossbeam connected between the two longitudinal beams, the crossbeams in the shoulder pole beam are provided with two, and the two crossbeams are welded and fixed to the two longitudinal beams. The ends of the two longitudinal beams are provided with lifting ears 5, the lifting ears are connected to the movable pulley block 3 of the lifting trolley 2 through a pin shaft, and the two movable pulley blocks 3 on a single lifting trolley 2 are connected to the two lifting ears 5 of the same longitudinal beam, and the middle parts of the two longitudinal beams are provided with a first U-shaped connecting groove 102 facing outward in the horizontal direction, and a slot hole penetrating from top to bottom and opening outward is provided in the first U-shaped connecting groove 102.

[0027] The structure of the lower support beam 103 is as follows: Figure 6-Figure 8 As shown, it is composed of a crossbeam, and the left and right ends of the crossbeam are provided with a second U-shaped connecting groove 104 facing outward in the horizontal direction. The second U-shaped connecting groove 104 is provided with a slot hole that passes through from top to bottom and opens outward, and the second U-shaped connecting groove 104 corresponds to the position of the first U-shaped connecting groove 102 in upper and lower directions; a gasket 107 is provided on the top surface of the lower supporting beam 103, and the box beam 4 is placed on the gasket 107 of the lower supporting beam 103.

[0028] The structure of the sling 105 is as follows: Figure 1 and Figure 2As shown, two slings are provided, and two sets of slings are provided with four slings in total. The sling includes a rope and a limit head 105 fixed at both ends of the rope, and the two ends of the sling are respectively stuck in the first U-shaped connecting groove 102 and the second U-shaped connecting groove 104, and are limited by the limit head 106. The width of the shoulder beam 101 and the lower support beam 103 are both smaller than the width of the top surface of the box beam 4, and larger than the width of the bottom surface of the box beam, and the sling 105 as a whole can pass through the reserved hole on the flange of the box beam.

[0029] The working process of the double-machine linkage lifting and hoisting device provided by the utility model is as follows:

[0030] (1) Move the two cranes in the beam moving machine inward so that the distance between them matches the width of the pole beam, then lower the movable pulley block to the ground and connect the movable pulley block to the lifting lug of the pole beam through the pin shaft;

[0031] (2) Lift the shoulder pole beam to a certain height to lift it off the ground, then insert the head end of the sling cable into the slot hole in the first U-shaped connecting groove on the shoulder pole beam, so that the limit head of the head end of the sling cable is stuck above the first U-shaped connecting groove, and then the crane continues to lift the shoulder pole beam and the sling cable together to a height exceeding the top surface of the box beam;

[0032] (3) Move the two beam movers to the front and rear ends of the box beam respectively, and adjust the angle and position of the beam movers to make them perpendicular to the box beam, and make the slings be located directly above the reserved holes on the flange of the box beam;

[0033] (4) The crane is lowered, so that the shoulder beam and the sling are lowered synchronously, and the sling is passed downward from the reserved hole of the flange until the tail end of the sling is lower than the bottom surface of the box beam;

[0034] (5) Place the lower joist below the front and rear ends of the box beam (since the box beam is placed on the base, the ends of the box beam are at a certain height from the ground), and then insert the tail end of the sling into the slot hole in the second U-shaped connecting groove on the lower joist so that the limit head at the tail end of the sling is stuck below the second U-shaped connecting groove;

[0035] (6) The cranes in the two beam moving machines are lifted synchronously to lift the box beam and make it leave the base. Then, the cranes are moved synchronously to move the box beam and complete the operation of a single box beam.

[0036] (7) After the box beam is moved, the limit head at the tail end of the sling is pulled out from the second U-shaped connection groove, the lower support beam is removed, and the crane continues to lift the sling to completely pull the sling out of the box beam. At this time, repeat steps (3) to (6) to move the next box beam.

[0037] (8) After all the box girders have been moved, or when box girders of other specifications need to be moved (not in dual-machine linkage mode), follow the reverse steps of steps (1)-(2) to remove the slings and shoulder pole beams.

Claims

1. A double-machine linkage lifting and hoisting device, comprising at least a sling and a shoulder pole beam, characterized in that: There are two sets of lifting devices, which are respectively installed in two beam moving machines, and the two sets of lifting devices are respectively arranged at the front end and the rear end of the box beam to lift the box beam together; the lifting devices include: The shoulder pole beam comprises two left and right longitudinal beams and a cross beam connected between the two longitudinal beams. The ends of the two longitudinal beams are provided with lifting ears, which are connected to the movable pulley block of the lifting trolley through a pin shaft, and the two movable pulley blocks on a single lifting trolley are connected to the two lifting ears of the same longitudinal beam. The middle parts of the two longitudinal beams are provided with a first U-shaped connecting groove facing outward in the horizontal direction, and a slot hole penetrating from top to bottom and opening outward is provided in the first U-shaped connecting groove; The lower supporting beam is composed of a cross beam, and the left and right ends of the cross beam are provided with second U-shaped connecting grooves facing outwards in the horizontal direction, and the second U-shaped connecting groove is provided with a slot hole that passes through from top to bottom and opens outwards, and the second U-shaped connecting groove corresponds to the first U-shaped connecting groove in the upper and lower positions; Two slings are provided, including ropes and limit heads fixed at both ends of the ropes, and the two ends of the slings are respectively clamped in the first U-shaped connecting groove and the second U-shaped connecting groove, and are limited by the limit heads.

2. The double-machine linkage lifting and hoisting device according to claim 1 is characterized in that: The shoulder pole beam is provided with two cross beams, and the two cross beams are welded and fixed to the two longitudinal beams.

3. The double-machine linkage lifting and hoisting device according to claim 1 is characterized in that: A gasket is arranged on the top surface of the lower joist, and the box beam is placed on the gasket of the lower joist.

4. The double-machine linkage lifting and hoisting device according to claim 1 is characterized in that: The widths of the shoulder beam and the lower supporting beam are both smaller than the width of the top surface of the box beam, and larger than the width of the bottom surface of the box beam, and the sling as a whole can pass through the reserved holes on the box beam.

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