CN212024609U - A double-arm movable mast crane - Google Patents

Abstract

The utility model relates to a double-arm movable mast crane, which comprises a bracket, a lower disc, an upper disc and a cab which are respectively rotatably mounted on the bracket from bottom to top. The upper surface and the lower surface of the upper disc are respectively hinged with a set of hoisting assemblies, and the hoisting assemblies include a hoisting arm and a herringbone frame hingedly arranged on both sides of the lower disc or the upper disc, and a hoisting arm and a herringbone Lifting cables on the shelf. Compared with the prior art, the utility model can not only meet the movable requirements of the bridge deck crane in the current bridge engineering construction, but also limit the rotation of the bridge deck in the air, and can freely adjust the distance between the two arms to meet different widths. The bridge deck is hoisted, and finally it has the ability to hoist different components.

Description

A double-arm movable mast crane

technical field

The utility model belongs to the technical field of construction machinery, and relates to a double-arm movable mast crane.

Background technique

Crane is an indispensable machine in civil engineering construction, especially in bridge engineering. When bridging on water or at a higher position from the ground, various existing bridge cranes need to be used. However, its function is single, and it can only hoist the bridge deck, and if the distance between the lifting points changes, it is necessary to disassemble the crane and adjust the distance between the brackets and reinstall it, which is time-consuming and labor-intensive. On the other hand, full-rotation, single-boom mast cranes are also used in the construction of some bridge projects, which are mainly used for the installation and construction of steel trusses and bridge decks. , the bridge deck will rotate in the horizontal plane in the air, requiring workers to use ropes for traction, which consumes manpower and is difficult to control errors.

Utility model content

The purpose of the utility model is to provide a double-arm movable mast crane in order to overcome the above-mentioned defects of the prior art. The crane can not only meet the movable requirements of bridge deck cranes in current bridge construction, but also limit the rotation of the bridge deck in the air, and can freely adjust the distance between the two arms to meet the lifting of bridge decks of different widths. Ability to hoist different components.

The purpose of the present utility model can be achieved through the following technical solutions:

A double-arm movable mast crane, comprising a bracket, a lower disc, an upper disc and a cab that are respectively rotatably mounted on the bracket from bottom to top, on the upper surface of the lower disc and all A set of hoisting assemblies are hinged on the lower surface of the upper disc, and the hoisting assemblies include a jib and a herringbone frame hingedly arranged on both sides of the lower disc or the upper disc, and a hoisting unit arranged on the jib and the herringbone frame. lasso.

Further, the jib and the gable frame of each group of hoisting assemblies are in the same vertical plane.

Further, between the lower disk and the upper disk, there is also a limit component for limiting the relative rotational displacement of the two.

Further, the limiting assembly includes two limiting posts that can interfere with each other, which are respectively disposed on the lower surface of the upper disc and the upper surface of the lower disc.

More preferably, the bottom end of the limiting column arranged on the lower surface of the upper disc is lower than the top end of the limiting column arranged on the upper surface of the lower disc.

Further, there are two sets of the limit components, and the arrangement positions of the two sets of limit components satisfy: when the upper disc and the lower disc are arbitrarily rotated within their respective strokes, there will be no occurrence between the two sets of hoisting components. interfere with each other.

Further, the hinge base points of the booms of the two sets of hoisting assemblies are located on the same horizontal plane.

Further, the lower disc, the upper disc and the cab rotate coaxially.

The concrete working mode of the crane of the present utility model is as follows:

When it is necessary to hoist large components such as bridge decks, two booms are used to work at the same time. At this time, by rotating the upper disc/lower disc, the two booms are arranged in a V-shape, and the rotation degree of the upper and lower discs is controlled. To control the angle between the two booms, so as to meet the requirements of the distance between the lifting points. After the spatial position of the boom is determined, the cab can be controlled to rotate so that the forward direction of the staff in the cab coincides with the angle bisector of the two booms. When working, each hoist is independently equipped with a hoist. When it needs to be hoisted at the same time, through the prepared control system (such as PLC system, etc.), it is ensured that the two hoists can work at the same time, and the speed and acceleration of the hoisting or lower parts are maintained. same.

When lifting small components, one boom can be used for work. At this time, by rotating one of the booms to the back of the working face, it is called the auxiliary boom, and the auxiliary boom can hoist the accessories at the rear; the other boom is rotated to the working face, which is called the main crane arm. When the two booms carry out their respective hoisting operations, they can be carried out independently without interfering with each other, so as to achieve the purpose of improving work efficiency.

Compared with the prior art, the utility model has comprehensive functions, can carry out the hoisting work of most components of the bridge, and has the advantages of the existing movable mast crane, the two booms can work independently, and the working efficiency is greatly improved. It can also prevent the bridge deck from rotating in the air.

Description of drawings

1 is a schematic side view of the utility model;

2 is a schematic front view of the utility model;

Fig. 3 is the side view schematic diagram of the rotating connection part of the boom, the gable frame and the cab;

Fig. 4 is the front view schematic diagram of the rotating connection part of the boom, the gable frame and the cab;

Fig. 5 is the top view schematic diagram of the rotating connection part of the boom, the gable frame and the cab;

Description of marks in the figure:

1- boom, 2- herringbone frame, 3- cab, 4- bracket, 5- upper disc, 6- lower disc, 7- limit post.

Detailed ways

The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and provides a detailed implementation manner and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

Example 1:

A double-arm movable mast crane, its structure is shown in Figures 1 and 2, including a bracket 4, and a lower disc 6, an upper disc 5 and a lower disc 6, an upper disc 5 and In the cab 3, a set of hoisting assemblies are hinged on the upper surface of the lower disc 6 and the lower surface of the upper disc 5, respectively, and the hoisting assemblies include a boom 1 and a herringbone frame 2 that are hingedly arranged on both sides of the lower disc 6 or the upper disc 5, respectively. , and the lifting cable set on the boom 1 and the gable frame 2.

Referring to Fig. 5 again, the jib 1 and the gable frame 2 of each set of hoisting assemblies are in the same vertical plane.

Please refer to FIG. 3 and FIG. 4 again, between the lower disc 6 and the upper disc 5, there is also a limit component for limiting the relative rotational displacement of the two, and the limit component includes two limit posts that can interfere with each other 7, which are respectively arranged on the lower surface of the upper disc 5 and the upper surface of the lower disc 6. The bottom end of the limiting column 7 arranged on the lower surface of the upper disc 5 is lower than the top end of the limiting column 7 arranged on the upper surface of the lower disc 6 . There are two sets of limit components, and the arrangement positions of the two sets of limit components are such that when the upper disc 5 and the lower disc 6 are arbitrarily rotated within their respective strokes, the two sets of hoisting components will not interfere with each other.

Referring to FIG. 3 again, the hinge base points of the jibs 1 of the two sets of hoisting assemblies are located on the same horizontal plane.

Please refer to FIG. 3 again, the lower disc 6 , the upper disc 5 and the cab 3 rotate coaxially.

The specific working mode of the crane of this embodiment is as follows:

Referring to Figure 1, when large components such as bridge decks need to be hoisted, two booms 1 are used to work at the same time. At this time, by rotating the upper disk 5/lower disk 6, the two booms 1 are arranged in a V-shape , and control the rotation amplitude of the upper and lower discs to control the angle between the two booms 1, so as to meet the requirements of the distance between the lifting points. After the spatial position of the boom 1 is determined, the cab 3 can be controlled to rotate so that the forward direction of the staff in the cab 3 coincides with the angle bisector of the two booms 1 . During specific work, each boom 1 is independently equipped with a hoist. When hoisting is required at the same time, through the prepared control system (such as PLC system, etc.), it is ensured that the two hoists can work at the same time, and the speed and acceleration of the hoist or below keep it the same.

Referring to Fig. 2, when lifting small components, a boom 1 can be used for work. At this time, by rotating one of the jib 1 to the back of the working surface, called the auxiliary jib 1, the auxiliary jib 1 can carry out the hoisting operation of accessories at the rear; the other jib 1 is rotated to the working surface, It is called the main boom 1. When the two booms 1 perform their respective hoisting operations, they can be performed independently without interfering with each other, thereby achieving the purpose of improving work efficiency.

The innovative essence of the crane in this embodiment mainly lies in adding a set of hoisting components on the basis of the existing movable mast crane, that is, adding a jib 1 and its matching herringbone frame 2, a hoist and other equipment, Then, by reasonably arranging the positions of the two sets of hoisting components, the two can work independently or together, which greatly expands the applicable occasions of the crane and improves the efficiency of hoisting work on most components such as bridges. Therefore, in the specific description of this embodiment, the description of the hoist, the cable and other conventional supporting components that can be understood by those skilled in the art and can cooperate with the boom and the gable frame to realize lifting and other functions is omitted.

In the above embodiments, if there is no special description of the functional component structure, it is indicated that it is a conventional component structure in the art for realizing the corresponding function.

The above description of the embodiments is for the convenience of those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications to these embodiments can be readily made, and the generic principles described herein can be applied to other embodiments without inventive step. Therefore, the present invention is not limited to the above-mentioned embodiments, and improvements and modifications made by those skilled in the art according to the disclosure of the present invention without departing from the scope of the present invention should all fall within the protection scope of the present invention.

Claims (8)

1. A double-arm movable mast crane, characterized in that it comprises a bracket, and a lower disc, an upper disc and a driver's cab that are respectively rotated and installed on the bracket from bottom to top. The upper surface of the disc and the lower surface of the upper disc are respectively hinged with a set of hoisting assemblies, and the hoisting assemblies include a hoisting arm and a herringbone frame hingedly arranged on both sides of the lower disc or the upper disc respectively, and the hoisting arm and Lifting cables on a gabled stand. 2 . The double-arm movable mast crane according to claim 1 , wherein the boom and the gable frame of each group of hoisting assemblies are in the same vertical plane. 3 . 3 . The double-arm movable mast crane according to claim 1 , characterized in that, between the lower disk and the upper disk, there is also a limit component for limiting the relative rotational displacement of the two. 4 . 4 . The double-arm movable mast crane according to claim 3 , wherein the limit assembly comprises two limit columns that can interfere with each other, which are respectively arranged on the lower surface of the upper disc. 5 . and the upper surface of the lower disc. 5 . The double-arm movable mast crane according to claim 4 , wherein the bottom end of the limit column arranged on the lower surface of the upper disc is lower than the limit position arranged on the upper surface of the lower disc. 6 . the top of the column. 6 . The double-arm movable mast crane according to claim 3 , wherein there are two sets of the limit components, and the arrangement positions of the two sets of limit components meet the following requirements: the upper disc and the lower When the discs rotate freely within their respective strokes, there will be no mutual interference between the two sets of hoisting components. 7 . The double-arm movable mast crane according to claim 1 , wherein the hinge base points of the booms of the two sets of hoisting assemblies are located on the same horizontal plane. 8 . 8 . The double-arm movable mast crane according to claim 1 , wherein the lower disc, the upper disc and the cab rotate coaxially. 9 .

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