CN222348562U - Double-turntable crane - Google Patents

Abstract

The utility model discloses a double-turntable crane which comprises a chassis, wherein a slewing bearing is arranged on the chassis, a turntable connecting piece is arranged on the slewing bearing, two turntables are symmetrically arranged on the turntable connecting piece by taking the slewing axis of the slewing bearing as a symmetrical axis, each turntable is provided with a lifting mechanism, the turntable connecting piece comprises a connecting part which is arranged in the middle and is arranged on the slewing bearing, two mounting parts which are arranged on two sides of the connecting part and are used for mounting the turntables, the lower surfaces of the two mounting parts are curved surfaces, the two curved surfaces are concave towards the upper part of the connecting part, and the lifting mechanism comprises a mast hinged to the turntable, a counterweight component which is arranged on the mast and provided with a counterweight component, a lifting component which is arranged on the turntable and is used for pulling the counterweight component to move up and down, and a lifting component which is arranged on the turntable and is used for lifting the weight. By arranging the two rotary tables and the two lifting mechanisms, when a heavy load is lifted, the two lifting mechanisms can work synchronously to lift the heavy object together.

Description

Double-turntable crane

Technical Field

The utility model belongs to the technical field of cranes, and particularly relates to a double-turntable crane.

Background

The crawler crane is a truss type cantilever crane structure crane adopting a crawler walking chassis, and can hoist a heavy object to a certain height.

At present, when a heavy object is lifted, if one crane cannot lift and a heavy-load crane cannot be used, two cranes are needed to be combined for use, so that the purpose of lifting the heavy object with the heavy load is achieved. However, when two cranes are combined for use, the problem of asynchronous work is unavoidable, so that the problems of inclination of the heavy object to be lifted and the like are caused, and potential safety hazards exist.

Disclosure of utility model

The utility model aims to overcome the defects in the prior art and provides a double-turntable crane, and by arranging two turntables and two lifting mechanisms, when a heavy load is lifted, the two lifting mechanisms can work synchronously to lift the heavy object together.

The utility model provides the following technical scheme:

A double-turntable crane comprises a chassis, a slewing bearing is arranged on the chassis, a turntable connecting piece is arranged on the slewing bearing, two turntables are arranged on the turntable connecting piece, a lifting mechanism is arranged on each turntable, the turntable connecting piece comprises symmetrically arranged connecting parts and two mounting parts which are arranged on two sides of the connecting parts and are used for mounting the turntables, the lower surfaces of the two mounting parts are all provided with curved surfaces, the two curved surfaces are recessed towards the upper parts of the connecting parts, the lifting mechanism comprises a mast hinged to the turntable, a counterweight component which is arranged on the mast and provided with a counterweight, a lifting component which is arranged on the turntable and used for pulling the counterweight to move up and down, and a lifting component which is arranged on the turntable and used for lifting the weight.

Further, the turntable is symmetrically arranged on the turntable connecting piece by taking the rotation axis of the slewing bearing as a symmetry axis.

Further, the lifting assembly includes a hoist on which the first wire rope is wound.

Further, a supporting rod inclined to the counterweight piece is fixed on the turntable, a first fixed pulley is mounted at the top of the supporting rod, a lifting ring is arranged on the counterweight piece, and the free end of the first steel wire rope sequentially bypasses the first fixed pulley and the lifting ring to be connected with the mast.

Further, the mounting portion is provided with a mounting hole for mounting the turntable, and the mounting portion on the periphery of the mounting hole is provided with a bolt hole for passing through a bolt.

Further, the connecting portion is installed in the middle of slewing bearing top.

The hoisting assembly comprises a hoisting winch which is arranged on the turntable and is wound with a second steel wire rope, and a main arm hinged to the turntable, wherein a plurality of second fixed pulleys are arranged on the main arm, the free ends of the second steel wire ropes extend to one side, far away from the mast, of the main arm by bypassing the second fixed pulleys, and the free ends of the second steel wire ropes are fixedly provided with lifting hooks.

Further, a pulling plate is arranged at one end, far away from the turntable, of the main arm, and one end, far away from the main arm, of the pulling plate is arranged on the mast.

Compared with the prior art, the utility model has the beneficial effects that:

1. Through setting up two revolving stages and two hoisting mechanism, when lifting by crane heavy load heavy object, two hoisting mechanism can synchronous operation, lifts by crane the heavy object together, promotes work efficiency, reduces the potential safety hazard.

2. The lower surfaces of the two mounting parts are set to be curved surfaces, and the two curved surfaces are recessed towards the upper part of the connecting part, so that the turntable connecting piece can bear larger load.

Drawings

Fig. 1 is a schematic structural diagram of a dual turret crane in an embodiment of the utility model.

Fig. 2 is a schematic diagram of the connection relationship among the turntable, the turntable connecting piece, the slewing bearing and the chassis according to the embodiment of the utility model.

Fig. 3 is a schematic structural diagram of a transfer table connector according to an embodiment of the present utility model.

Fig. 4 is a schematic structural view of a mounting portion with mounting holes and bolt holes according to an embodiment of the present utility model.

The turntable is marked by a turntable 1, a turntable connecting piece 2, a connecting part 21, a mounting part 22, a mounting hole 23, a bolt hole 24, a slewing bearing 3, a chassis 4, a main arm 5, a mast 6, a counterweight 7, a lifting assembly 8, a first steel wire rope 9, a pulling plate 10 and a second steel wire rope 11.

Detailed Description

The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.

It should be noted that, in the description of the present utility model, the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and do not require that the present utility model must be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model.

Example 1:

As shown in fig. 1 and 2, the present embodiment provides a dual-turntable crane, which includes a chassis 4, a slewing bearing 3 is mounted on the chassis 4, a turntable connecting member 2 is mounted on the slewing bearing 3, two turntables 1 are symmetrically arranged on the turntable connecting member 2 by taking a rotation axis of the slewing bearing 3 as a symmetry axis, and a lifting mechanism is mounted on each turntable. The turntable connecting piece 2 comprises a connecting portion 21 located in the middle and mounted to the slewing bearing 3, and two mounting portions 22 located on both sides of the connecting portion 21 for mounting the turntable 1. The lower surfaces of the two mounting portions 22 are curved surfaces, and the two curved surfaces are recessed toward the upper portion of the connecting portion, so that the turntable connecting member 2 can bear a larger load. The hoisting mechanism comprises a mast 6 hinged to the turntable 1, a counterweight assembly with a counterweight 7 mounted on the mast 6, a lifting assembly 8 mounted on the turntable 1 for pulling the counterweight 7 up and down, and a hoisting assembly mounted on the turntable 1 for hoisting a weight.

In this embodiment, the lifting assemblies of the two lifting mechanisms are respectively and fixedly connected to the heavy load to be lifted, and the weight piece 7 is adjusted so that the two sides are balanced, and the working can be started.

Example 2:

This embodiment provides an implementation of the lifting assembly 8 and the hoisting assembly on the basis of embodiment 1.

As shown in fig. 1, the hoisting assembly 8 comprises a hoist around which a first wire rope 9 is wound. The rotary table 1 is fixedly provided with a supporting rod which inclines towards the counterweight 7, the top of the supporting rod is provided with a first fixed pulley, the counterweight 7 is provided with a hanging ring, and the free end of the first steel wire rope 9 sequentially bypasses the first fixed pulley and the hanging ring to be connected with the mast 6.

As shown in fig. 3 and 4, the mounting portion 22 is provided with a mounting hole 23 for mounting the turntable 1, and the mounting portion 22 on the periphery of the mounting hole is provided with a bolt hole 24 for passing a bolt.

As shown in fig. 1, the hoisting assembly comprises a hoisting winch mounted to the turntable 1 and wound with a second wire rope 11, and a main arm 5 hinged to the turntable. The main arm 5 is provided with a plurality of second fixed pulleys, the free ends of the second steel wire ropes 11 bypass the second fixed pulleys and extend to one side, far away from the mast 6, of the main arm 5, and the free ends of the second steel wire ropes 11 are fixedly provided with lifting hooks.

The end of the main arm 5 remote from the turntable 1 is provided with a pulling plate 10, and the end of the pulling plate 10 remote from the main arm 5 is mounted on the mast 6.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.

Claims (8)

1. The double-turntable crane is characterized by comprising a chassis (4), wherein a slewing bearing (3) is arranged on the chassis (4), a turntable connecting piece (2) is arranged on the slewing bearing (3), two turntables (1) are arranged on the turntable connecting piece (2), and a lifting mechanism is arranged on each turntable (1);

The turntable connecting piece (2) comprises symmetrically arranged connecting parts (21) and two mounting parts (22) which are positioned at two sides of the connecting parts (21) and used for mounting the turntable (1), wherein the lower surfaces of the two mounting parts (22) are both curved surfaces, and the two curved surfaces are both sunken towards the upper part of the connecting parts (21);

The hoisting mechanism comprises a mast (6) hinged to the turntable (1), a counterweight assembly arranged on the mast (6) and provided with a counterweight (7), a lifting assembly (8) arranged on the turntable (1) and used for pulling the counterweight (7) to move up and down, and a hoisting assembly arranged on the turntable (1) and used for hoisting a heavy object.

2. Double-turret crane according to claim 1, wherein the turret (1) is arranged on the turret connection piece (2) axisymmetrically with respect to the axis of rotation of the slewing bearing (3).

3. Double turret crane according to claim 1, wherein the hoisting assembly (8) comprises a hoisting machine on which the first wire rope (9) is reeled.

4. A double-turntable crane according to claim 3, characterized in that the turntable (1) is fixed with a supporting rod inclined to the counterweight (7), the top of the supporting rod is provided with a first fixed pulley, the counterweight (7) is provided with a lifting ring, and the free end of the first steel wire rope (9) is connected with the mast (6) by bypassing the first fixed pulley and the lifting ring in sequence.

5. The double-turntable crane according to claim 1, wherein the mounting portion (22) is provided with a mounting hole (23) for mounting the turntable (1), and the mounting portion (22) at the periphery of the mounting hole is provided with a bolt hole (24) for passing a bolt.

6. Double turret crane according to claim 1, wherein the connection (21) is mounted in the middle above the slewing bearing (3).

7. The double-turntable crane according to claim 1, wherein the hoisting assembly comprises a hoisting winch which is arranged on the turntable (1) and is wound with a second steel wire rope (11), and a main arm (5) hinged on the turntable (1), a plurality of second fixed pulleys are arranged on the main arm (5), the free ends of the second steel wire ropes (11) extend to one side of the main arm (5) far away from the mast (6) by bypassing the plurality of second fixed pulleys, and the free ends of the second steel wire ropes (11) are fixedly provided with lifting hooks.

8. Double turret crane according to claim 7, wherein the end of the main arm (5) remote from the turret (1) is provided with a pulling plate (10), the end of the pulling plate (10) remote from the main arm (5) being mounted on the mast (6).