Tyre type beam lifter with telescopic main beam

Abstract

The utility model belongs to the technical field of beam lifting machines, and particularly relates to a tire type beam lifting machine with a telescopic main beam, which mainly comprises supporting legs, a fixed main beam, a sliding main beam and a limiting device, the supporting legs are symmetrically arranged on two longitudinal sides of the sliding main beam, and motor vehicles are respectively arranged below the two supporting feet of the supporting legs; fixed main beams are fixedly or detachably connected to the upper portions of the two supporting legs, prefabricated holes are formed in the fixed main beams, hoisting devices and limiting devices are installed on the fixed main beams, the sliding main beam is installed between the two fixed main beams in a sliding mode, and limiting holes are formed in the upper surface of the sliding main beam in a linear array mode; the limiting device comprises a support, a limiting column, a ball screw and a rotating motor. Compared with the prior art, the width between the supporting legs can be changed without disassembly and assembly, the construction progress can be greatly improved, meanwhile, separation blades are arranged to prevent the sliding main beam from falling off due to misoperation, and the life safety of surrounding operators is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of beam lifting machines, in particular to a tire-type beam lifting machine with a telescopic main beam. Background Art

[0002] The beam lifting machine is a gantry crane specially designed for bridge construction. The beam lifting machine is mainly composed of assembled main beams, outriggers, overhead cranes, etc. The components are connected by pins and high-strength bolts, which are easy to disassemble and transport. Compared with ordinary gantry cranes, it is convenient and fast to install, economical and practical. It is suitable for road and bridge construction units that often move.

[0003] The beam lifting machine can be used to lift precast beams with two cranes or with a single crane equipped with double lifting devices. It is equipped with outriggers, overhead cranes and overhead crane lifting equipment, which can achieve all-round mechanized movements. It is mainly used to lift precast beams from the beam making platform to the beam storage platform. After the precast beams are maintained, they are lifted from the beam storage platform to the beam transport vehicle. It is used as a lifting equipment to complete the assembly and disassembly of the bridge erection machine. It is also used to erect dry bridges with low piers.

[0004] The existing beam lifting machine generally installs the main beam on site after determining the size, assembles the legs, and then installs the control equipment of each part. When encountering complex terrain or changing the width for use, it needs to be disassembled and reassembled, which will delay the construction progress. Therefore, it is necessary to invent a beam lifting machine with a retractable main beam. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model develops a tire-type beam lifting machine with a telescopic main beam, which can change the width between the outriggers without disassembly and assembly, thereby improving the convenience of equipment use and accelerating construction progress.

[0006] The technical solution of the utility model to solve the technical problem is: a tire-type beam lifting machine with a retractable main beam, comprising legs, a fixed main beam, a sliding main beam and a limiting device, wherein the legs are symmetrically arranged on both sides of the longitudinal direction of the sliding main beam, the cross section of the legs is "A"-shaped, and the longitudinal section is rectangular, and power vehicles are respectively installed under the two legs of the legs; a fixed main beam is fixedly or detachably connected above the two legs, and a prefabricated hole is provided on the fixed main beam and a hoisting device and a limiting device are installed, the sliding main beam is slidably installed between the two fixed main beams, and the limiting holes are linearly arranged in an array on the upper surface of the sliding main beam;

[0007] The limiting device includes a support, a limiting column, a ball screw and a power device. The support is installed on a fixed main beam. There is an opening in the center of the support, and a ball screw is installed at the opening. The ball screw is connected to the output end of the power device. The limiting column is threadedly connected to the ball screw, and the bottom corresponds to the prefabricated hole on the fixed main beam.

[0008] Preferably, the hoisting device includes an overhead crane and an electric hoist, the overhead crane is slidably mounted on a fixed main beam, the overhead crane is connected to a hydraulic system, and the hydraulic system is mounted on the fixed main beam; the electric hoist is mounted on two side plates of the overhead crane.

[0009] Preferably, a first workbench, a second workbench, a first ladder and a second ladder are provided on the supporting legs; a third workbench and a third ladder are provided on the side of the fixed main beam close to the supporting legs.

[0010] Preferably, a distribution box is installed on the first workbench of the leg on one side of the two legs, and a control room and a control cabinet are installed on the first workbench of the leg on the other side.

[0011] Preferably, the power device is a rotating motor, and the rotating motor is mounted on a support through a flange.

[0012] Preferably, a first limit baffle is provided on one end of the fixed main beam away from the supporting legs; and roller groups and second limit baffles to prevent falling off are provided at both ends of the sliding main beam.

[0013] Preferably, the power vehicle is provided with a rotating part.

[0014] Preferably, the limiting column is an inverted "U"-shaped structure.

[0015] Preferably, the legs and the fixed main beam are fixedly connected by high-strength bolts.

[0016] The effects provided in the utility model content are only the effects of the embodiments, not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:

[0017] Compared with the existing technology, the width between the two legs can be adjusted by controlling the power car and the limit device in the control room, avoiding the need to disassemble and reassemble when the width needs to be changed, greatly saving time;

[0018] By providing the first limit baffle and the second limit baffle, it is possible to prevent the sliding main beam from falling off due to operational errors during the operation process, thereby avoiding huge economic losses and ensuring the safety of on-site workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the front view of the utility model;

[0020] Figure 2 It is the overall structural diagram of the utility model;

[0021] Figure 3 for Figure 1 Sectional view in the AA direction;

[0022] Figure 4 for Figure 1 Cross-sectional view in the BB direction;

[0023] Figure 5 This is the structural diagram of the sliding main beam;

[0024] Figure 6 for Figure 2 A partial enlarged view of the middle A area;

[0025] Figure 7 for Figure 4 A partial enlarged view of area A.

[0026] Among them: 1. Power car; 101. Rotating part;

[0027] 2. Outriggers; 21. Distribution box; 22. Control room; 23. Control cabinet;

[0028] 3. Fixed main beam; 31. Prefabricated hole; 32. Overhead crane; 33. Hydraulic system; 34. Electric hoist; 35. First limit stopper;

[0029] 4. Sliding main beam; 41. Limiting hole; 42. Roller assembly; 43. Second limiting baffle;

[0030] 5. First workbench; 51. Second workbench; 52. Third workbench;

[0031] 6, first ladder; 61, second ladder; 62, third ladder;

[0032] 7. Support; 71. Limit column; 72. Ball screw; 73. Rotating motor. DETAILED DESCRIPTION

[0033] In order to clearly illustrate the technical features of the present invention, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0034] Example 1

[0035] See also Figures 1 to 7 A tire-type beam lifting machine with a retractable main beam comprises a leg 2, a fixed main beam 3, a sliding main beam 4 and a limiting device. The legs 2 are symmetrically arranged on both sides of the sliding main beam 4 in the longitudinal direction. The cross section of the leg 2 is "A"-shaped and the longitudinal section is rectangular. A power car 1 is installed under the two legs of the leg 2 respectively; the two legs 2 are fixedly connected with a fixed main beam 3 by high-strength bolts, the fixed main beam 3 is provided with a prefabricated hole 31 and is installed with a hoisting device and a limiting device, the sliding main beam 4 is slidably installed between the two fixed main beams 3, and the upper surface of the sliding main beam 4 is linearly arrayed with limiting holes 41;

[0036] The limiting device includes a support 7, a limiting column 71, a ball screw 72 and a power device. The support 7 is installed on the fixed main beam 3. The support 7 has an opening in the center, and a ball screw 72 is installed at the opening. The ball screw 72 is connected to the output end of the power device. The limiting column 71 is threadedly connected to the ball screw 72, and the lower part corresponds to the prefabricated hole 31 on the fixed main beam 3.

[0037] like Figure 2 and Figure 6 As shown, the lifting device includes a crane 32 and an electric hoist 34. The crane 32 is slidably installed on the fixed main beam 3. The crane 32 is connected to a hydraulic system 33, and the hydraulic system 33 is installed on the fixed main beam 3. The electric hoist 34 is installed on the two side plates of the crane 32.

[0038] like Figure 1 and Figure 2 As shown, a first workbench 5 , a second workbench 51 , a first ladder 6 and a second ladder 61 are provided on the support leg 2 ; a third workbench 52 and a third ladder 62 are provided on the side of the fixed main beam 3 close to the support leg 2 .

[0039] like Figure 2 As shown, a distribution box 21 is installed on the first workbench 5 of the leg 2 on one side of the two legs 2, and a control room 22 and a control cabinet 23 are installed on the first workbench 5 of the leg 2 on the other side.

[0040] like Figure 2 , Figure 4 and Figure 7 As shown, the power device is a rotating motor 73, and the rotating motor 73 is mounted on the support 7 through a flange.

[0041] like Figure 2 and Figure 5 As shown, it is characterized in that a first limit baffle 35 is provided on one end of the fixed main beam 3 away from the support leg 2; and roller groups 42 and second limit baffles 43 for preventing falling off are provided at both ends of the sliding main beam 4.

[0042] like Figures 1 to 4 As shown, the power vehicle 1 is provided with a rotating part 101 .

[0043] like Figure 2 and Figure 7 As shown, the limiting column 71 is an inverted "U"-shaped structure.

[0044] Principle and operation steps

[0045] The utility model uses the control room 22 to control each component through the control cabinet 23 to work. After the equipment components arrive at the site for assembly, the work begins. During the work, the power car 1 can be moved by controlling the control room 22; when it is necessary to adjust the width between the legs 2, first operate the rotating motor 73 on one side to lift the limit column 71, and at the same time operate the rotating part 101 to rotate the tire of the power car 1 on this side to the same direction of travel as the length of the main beam, and control the power car 1 to move toward the center of the main beam. When the sliding main beam 4 slides to the appropriate position, it is slightly adjusted to align the limit hole 41 with the prefabricated hole 31, and the power car 1 stops moving, and the rotating motor 73 starts to work, and the limit column 71 is lowered into the limit hole 41 to complete the length adjustment of one side. After the adjustment of one side is completed, repeat the above steps to adjust the other side to complete the adjustment of the width between the legs 2.

[0046] If the width still does not meet the requirements after adjustment, the hydraulic system 33 can be further used to push and pull the overhead travelling crane 32 to perform position fine adjustment so that the width between the legs 2 meets the work requirements. After adjusting the width, the T beam can be hoisted by the electric hoist 34.

[0047] Although the specific implementation methods of the utility model are described above in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. On the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A tire-type beam lifting machine with a retractable main beam, characterized in that: The invention comprises a support leg (2), a fixed main beam (3), a sliding main beam (4) and a limiting device, wherein the support legs (2) are symmetrically arranged on both sides of the longitudinal direction of the sliding main beam (4), the cross section of the support legs (2) is "A"-shaped, and the longitudinal section is rectangular, and a power vehicle (1) is respectively installed under the two support feet of the support legs (2); a fixed main beam (3) is fixedly or detachably connected above the two support legs (2), the fixed main beam (3) is provided with a prefabricated hole (31) and is installed with a hoisting device and a limiting device, the sliding main beam (4) is slidably installed between the two fixed main beams (3), and limiting holes (41) are arranged in a linear array on the upper surface of the sliding main beam (4); The limiting device comprises a support (7), a limiting column (71), a ball screw (72) and a power device. The support (7) is mounted on the fixed main beam (3). The support (7) has an opening at the center, and a ball screw (72) is mounted at the opening. The ball screw (72) is connected to the output end of the power device. The limiting column (71) is threadedly connected to the ball screw (72), and the lower part corresponds to the prefabricated hole (31) on the fixed main beam (3).

2. A tire-type beam lifting machine with a telescopic main beam according to claim 1, characterized in that: The hoisting device comprises an overhead travelling crane (32) and an electric hoist (34); the overhead travelling crane (32) is slidably mounted on a fixed main beam (3); a hydraulic system (33) is connected to the overhead travelling crane (32); and the hydraulic system (33) is mounted on the fixed main beam (3); and the electric hoist (34) is mounted on two side plates of the overhead travelling crane (32).

3. The tire-type beam lifting machine with a telescopic main beam according to claim 1, characterized in that: The supporting leg (2) is provided with a first workbench (5), a second workbench (51), a first ladder (6) and a second ladder (61); and a third workbench (52) and a third ladder (62) are provided on a side of the fixed main beam (3) close to the supporting leg (2).

4. The tire-type beam lifting machine with a telescopic main beam according to claim 3, characterized in that: The first workbench (5) is equipped with a distribution box (21), a control room (22) and a control cabinet (23).

5. The tire-type beam lifting machine with a telescopic main beam according to claim 1, characterized in that: The power device is a rotating motor (73), and the rotating motor (73) is mounted on a support (7) via a flange.

6. The tire-type beam lifting machine with a telescopic main beam according to claim 1, characterized in that: A first position-limiting baffle (35) is provided on one end of the fixed main beam (3) away from the supporting leg (2); and a roller group (42) and a second position-limiting baffle (43) for preventing falling off are provided on both ends of the sliding main beam (4).

7. The tire-type beam lifting machine with a telescopic main beam according to claim 1, characterized in that: The power vehicle (1) is provided with a rotating part (101).

8. The tire-type beam lifting machine with a telescopic main beam according to claim 1, characterized in that: The limiting column (71) is an inverted "U"-shaped structure.

9. The tire-type beam lifting machine with a telescopic main beam according to claim 1, characterized in that: The supporting legs (2) and the fixed main beam (3) are fixedly connected by high-strength bolts.

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