CN201746254U - Crawler crane combined rotary table - Google Patents

Abstract

The utility model discloses a crawler crane combined rotary table, which comprises a standard rotary table on which a counter weight suspension loop is arranged, and also comprises an additional rotary table; the combined rotary table is formed by the connection of the standard rotary table and the additional rotary table, and the additional rotary table is also provided with the counter weight-installing suspension loop. In the combined rotary table, the center of gravity of the finished automobile is changed through changing the installing position of the counter weight, and the stable moment is increased so as to improve the hoisting performance. In the utility model, the traditional single rotary table structure is changed, the rotary table is designed into a combined one, and is formed by the standard rotary table and the additional rotary table. The completely self-hoisting of the long main jib can be realized; the hoisting height is increased, and the hoisting weight is increased; the gyration radius is small, so the rotary table can operate in a smaller space; and the user can select the rotary table as required; the transportation and transition are easy, the work efficiency is high, and the use cost is reduced. The utility model is reasonable in design, convenient to manufacture, and particularly suitable for the large tonnage crawler crane.

Description

Combined turntable of crawler crane

One, technical field

The utility model relates to the turntable structure of crawler crane.

Two, background technology

In some workplace, to the requirement that loading capability has suitable expansion of hanging of crawler crane, hoisting crane just must be worn the super-starting balance weight device, realizes the field operation requirement.Under this operating mode, the swinging radius of hoisting crane is big, and the relevant work space is bigger, also needs bigger whipline to come cooperating when the assembling crane.Bring difficulty for like this transportation transition, inefficiency, use cost increases.

Three, summary of the invention

The purpose of this utility model provides a kind of combined turntable of crawler crane, make hoisting crane needn't wear the super-starting balance weight device, by changing the counterweight installation site of turntable, under the limited condition in operational space, realize hoisting crane under longer principal arm operating mode fully from, and the raising lifting performance, satisfy the needs of specific operation.

The purpose of this utility model is achieved in that combined turntable of crawler crane comprises the standard turntable, on the standard turntable, there is counterweight that hangers is installed, the utility model also comprises additional turntable, combined turntable is connected to form by standard turntable and additional turntable, also has counterweight that hangers is installed on additional turntable.Combined turntable changes the car load center of gravity by changing the counterweight installation site, increases balancing torque to improve lifting performance.

Common hoisting crane only has a standard counterweight installation site on turntable, the standard counterweight hangs on the hangers of two pairs of fixed positions, realize necessarily hanging height and hoisting capacity, and needing to install super-starting balance weight could realize.And the utility model can replace aforementioned hoisting crane operating mode by the standard counterweight being installed in additional turntable place, fulfils assignment.The utility model has changed traditional single standard turntable structure, is assembly set with turret design, is made of standard turntable and additional turntable.Combined turntable has solved following problem: 1), do not needing to be equipped with under the situation of super-starting balance weight, realize long principal arm operating mode fully from; 2), improve lifting altitude, increase hoisting capacity; 3), because of no super-starting balance weight, radius of turn is little, can work in less space; 4), because of turntable for dividing a body structure, promptly form by standard turntable and additional turntable, the user can match according to actual needs like this; 5) but, the turntable split, the monomer domestic shipping weight is light, transportation transition easily, high efficiency, use cost reduces.

The utility model is reasonable in design, is convenient to manufacture.Be specially adapted to the rotation table device of large-tonnage crawler crane.

Four, description of drawings

Fig. 1 when special operation condition, when having the standard counterweight, also will install super-starting balance weight by having surpassed mast for existing crawler crane turntable working state schematic representation;

Fig. 2 is a working state schematic representation of the present utility model, and when special operation condition, the additional turntable of adjunction on the standard turntable moves after making the relative center of gyration in counterweight installation position, only uses the standard counterweight can realize improving the requirement of hanging loading capability;

Fig. 3 is a decomposition texture scheme drawing of the present utility model;

Fig. 4 is the I portion enlarged drawing of Fig. 3.

Five, the specific embodiment

Common crawler crane only has standard turntable 1, when reply needs to expand the demand of the ability of slinging, when wearing standard counter weight device 12, also needs to wear super-starting balance weight device 13.And after the utility model increased additional turntable 2, needn't wear the super-starting balance weight device again.

Combined turntable of crawler crane is constituted by standard turntable 1 and additional turntable 2, and standard turntable 1 is plate weldering body structure with additional turntable 2; On standard turntable 1, there are two pairs of counterweights that hangers 3,4 is installed, on additional turntable, have a pair of counterweight that hangers 5 is installed.When only using the standard turntable, counterweight hangs on the hangers 3,4, and behind the additional turntable of use, counterweight hangs on the hangers 4,5.Connect by bearing pin between standard turntable 1 and the additional turntable 2, two groups of corresponding pin-and-holes are up and down arranged in the joint of standard turntable 1 and additional turntable 2, link together by upper pin 7 and lower bearing pin 9.When bearing pin 7 was installed, with percussion hammer 8 bump bearing pins 7 end faces, under the bump of external force, bearing pin 7 just can be squeezed into pin-and-hole smoothly, and the other end is fixing with lock pin 6, prevents bearing pin 7 slippages.Lower bearing pin 9 is a limit shaft, prevents additional turntable 2 sway, and it is fixing with lock pin 10 that bearing pin 9 is installed the back, in case bearing pin 9 slippages.Positive stop lug boss 11 is arranged below bearing pin 9.Spacing by boss 11, guarantee that additional turntable 2 is in same plane with standard turntable 1.

Claims (3)

1. combined turntable of crawler crane, comprise standard turntable (1), on standard turntable (1), there is counterweight that hangers (3,4) is installed, it is characterized in that: further comprising additional turntable (2), combined turntable is connected to form by standard turntable (1) and additional turntable (2), has counterweight that hangers (5) is installed on additional turntable (2).

2. combined turntable of crawler crane according to claim 1, it is characterized in that: connect by bearing pin between standard turntable (1) and the additional turntable (2), in the joint of standard turntable (1) and additional turntable (2) two groups of corresponding pin-and-holes are up and down arranged, link together by upper pin (7) and lower bearing pin (9).

3. combined turntable of crawler crane according to claim 2 is characterized in that: positive stop lug boss (11) is arranged below bearing pin (9).

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