CN205241113U - Form of arranging of counter weight on swing arm formula tower machine balance arm - Google Patents

Abstract

The utility model discloses an arrangement form of the counterweight on the balance arm of the boom type tower crane. The counterweight (1) is suspended at the middle and rear part of the balance arm (2) and is located between two main beams of the balance arm (2). , the counterweight (1) is limited and fixed through the main beam, and the installation mechanism connected with the main beam is located above the counterweight (1). The beneficial effect is that the counterweight arranged on the balance arm is not only very convenient and quick to install and disassemble, but also can meet the use requirements of cement counterweight and cast iron counterweight, and can effectively shorten the length of the balance arm and reduce the rotation of the boom tower crane Radius, so that the jib tower crane can meet the use requirements of narrower spaces.

Description

Arrangement form of counterweight on balance arm of luffing jib tower crane

technical field

The utility model relates to an arrangement form of a counterweight on a balance arm, which belongs to the technical field of a boom-type tower crane.

Background technique

The counterweight on the balance arm of the existing boom-type tower crane is generally arranged as a rear type, as shown in Figure 1, that is, the counterweight is placed at the rear end of the balance arm, which requires additional installation space, and the towers are placed inwards in turn. Top, mechanism and other components, and the structure of the balance arm is relatively simple, which can only meet the use requirements of cement counterweight or cast iron counterweight. When designing and manufacturing, two structural forms need to be considered and selected according to different needs of customers. use.

However, the existing method of arranging counterweights on the balance arm has the following technical disadvantages: 1. The structure is single, resulting in an increase in the variety of tower cranes with the same performance, which is not conducive to production management and inventory control. During production, different balance arms need to be considered according to the style of the counterweight. At the same time, a certain amount of inventory must be maintained for each type of balance arm to meet customer needs. The production process is relatively cumbersome and the production cycle is long, which is not conducive to mass production. production and management.

2. The space for personnel activities is small, and it is difficult to install and disassemble the counterweight. When installing and dismounting the counterweight, personnel can only operate while standing on the side of the balance arm. At the same time, they need to often climb above the counterweight to operate, which makes it difficult to install and disassemble the counterweight, and reduces the safety of the operator.

3. The tower crane has a large turning radius, which is not conducive to mobile operations in a narrow space. The counterweight is arranged at the tail of the balance arm, resulting in an increase in the length of the balance arm, and the balance arm needs to occupy more space for turning and hoisting during work.

Contents of the invention

Aiming at the defects or deficiencies in the arrangement of counterweights in the above structural form, in order to ensure the convenience and operability of product installation and disassembly, and reduce the turning radius of the balance arm, the utility model provides a movable arm type tower crane with upper balance arm The heavy layout can meet the installation and use requirements of cement counterweight and cast iron counterweight at the same time, reduce the structural form of the balance arm, facilitate production management, reduce the safety stock, and at the same time can effectively shorten the radius of gyration of the boom-type tower crane and improve The applicability and extensiveness of the work site.

In order to achieve the above purpose, the utility model provides a form of arrangement of the counterweight on the balance arm of the boom-type tower crane. The limit of the counterweight is fixed, and the installation mechanism connected with the main beam is located above the counterweight, so that the counterweight does not occupy extra length space.

Further, the counterweight is cement counterweight or cast iron counterweight, which unifies the product structure and saves production cost and management cost.

Further, the balance arm is a tailor-welded integral structure, which improves the reliability of the product.

The utility model can meet the installation requirements of cement counterweight and cast iron counterweight at the same time. The counterweight is placed in the middle and rear of the balance arm structure, and is limited and fixed by the main beams on both sides. After the counterweight is installed, it can be placed and installed on the upper side. mechanism.

Compared with the prior art, the arrangement of the balance arm of the boom-type tower crane has the following advantages: 1. The tower crane has a small turning radius, which can meet the use requirements of a narrower space. In this structure, the counterweight is arranged inside the main girder of the balance arm, and the mechanism is installed above the counterweight. The counterweight no longer occupies an additional length dimension, which can effectively reduce the length of the balance arm and make the swing radius of the boom tower crane smaller. In order to meet the adaptation needs of the narrow space.

2. The structure is unified, which is convenient for production and management. This structure can meet the installation and use requirements of cement counterweight and cast iron counterweight at the same time. The product has strong versatility and is easy to manage production and control inventory.

3. It is easy to install and disassemble, and the product is safe and reliable. The surrounding area of the counterweight can be used as an operating space, the operator has a large space for movement, and the safety of the operator can be well guaranteed; at the same time, there are main beams around the counterweight as protective devices to prevent the counterweight from falling off during the work process and improve the safety of the operator. Product safety and reliability.

Description of drawings

Fig. 1 is the layout form of the counterweight on the balance arm of the boom type tower crane in the prior art;

Fig. 2 is the structural representation of the utility model;

In the figure: 1, counterweight, 2, balance arm.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 2, the counterweight 1 of the utility model is suspended at the middle and rear part of the balance arm 2, and is located between the two main beams of the balance arm 2, and the counterweight 1 is limited and fixed by the main beam. It can be used for cement counterweight and cast iron counterweight, and the form of the product is unified. The installation mechanism connected with the main beam can be placed above the counterweight 1, effectively shortening the length of the balance arm 2, and the counterweight 1 will not occupy additional length space. And there are main beams and tail beams around the counterweight 1, which is convenient for operators to move.

The utility model adopts the layout structure of the universal balance arm 2, and the counterweight 1 is arranged inside the balance arm 2, and the main beams on both sides are used to bear the counterweight weight. Strong adaptability and strong controllability in production and production management.

By applying this technology, the counterweight 1 arranged on the balance arm 2 of the XGTL120 is not only very convenient and quick to install and disassemble, but also meets the requirements for the use of cement counterweight and cast iron counterweight, and can effectively shorten the length of the balance arm 2 and reduce the The radius of gyration of the luffing jib tower crane enables the luffing jib tower crane to meet the use requirements of a narrower space. At the same time, it has important reference value and application value for the design of other products.

Claims (3)

1. the arrangement form of counterweight on a movable arm type tower machine counter-jib, it is characterized in that, counterweight (1) is suspended on the postmedian of counter-jib (2), and be positioned between counter-jib (2) two girders, fix spacing this counterweight (1) by girder, and the installing mechanism being connected with girder is positioned at this counterweight (1) top.

2. the arrangement form of counterweight on a kind of movable arm type tower machine counter-jib according to claim 1, is characterized in that, described counterweight (1) is cement counterweight or gray iron counterweight.

3. the arrangement form of counterweight on a kind of movable arm type tower machine counter-jib according to claim 1 and 2, is characterized in that, the overall structure of described counter-jib (2) for being welded into.