CN213976739U

CN213976739U - Box counter weight of swing arm tower crane

Info

Publication number: CN213976739U
Application number: CN202022437747.7U
Authority: CN
Inventors: 才冰; 王春明; 姜利; 王明鑫; 吴静; 白晶
Original assignee: Fushun Yongmao Construction Machinery Co ltd
Current assignee: Fushun Yongmao Construction Machinery Co ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-08-17
Anticipated expiration: 2030-10-29

Abstract

The utility model discloses a box-type counterweight of a movable arm tower crane, which comprises a strip-shaped counterweight frame, the middle part of the upper end of the strip-shaped counterweight frame is connected with the main limb of a balance arm, three counterweight block groups in the middle part and on two sides of the strip-shaped counterweight frame are arranged on the upper end of the strip-shaped counterweight frame, and each counterweight block group is formed by connecting an upper counterweight block and a lower counterweight block through a positioning pin; the inner and outer sides of the counterweight blocks on the counterweight block groups on the two sides are respectively connected with the main limbs of the balance arms and the strip-shaped counterweight frame through pull plates; two sides of the balancing weight on the middle balancing weight group are respectively connected with the main limbs of the balancing arm through pulling plates. By adopting the structure, the counterweight support adopts a strip-shaped structure, and the counterweight group on the counterweight support is adaptive to the shape of the counterweight support, so that the tail part of the whole counterweight arm has a compact structure and small occupied space, the turning radius of the tower crane is greatly reduced, and the movable-arm tower crane meets the use requirement of narrower working conditions.

Description

Box counter weight of swing arm tower crane

Technical Field

The utility model belongs to the technical field of swing arm tower crane part, a box counter weight of swing arm tower crane is related to.

Background

At present, the jib tower crane is widely used for hoisting operation of bridges, buildings, shipyards, high-rise and super high-rise projects, and the counterweight is one of important components of the jib tower crane, plays a vital balance role in the whole crane, and plays a key role in improving the hoisting performance of the tower crane. In order to facilitate installation and disassembly, the balance weight generally comprises a plurality of balance weights, the balance weight form generally comprises a concrete balance weight and a steel plate balance weight, the concrete balance weight is generally large in size and too high in height after installation, when the tower crane rotates, the swinging condition is easy to occur, the concrete balance weight is mostly a rectangular right-angle side, and the rectangular right-angle side has certain influence on the rotating radius of the tower crane; the steel plate type counterweight has overhigh cost, and the length of the generally extended balance arm is not beneficial to tower group operation.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure, reasonable in design can effectively overcome the box counter weight of the cantilever type tower crane that current counter weight form a great deal of is not enough.

The utility model adopts the technical proposal that: the box type counterweight comprises a strip-shaped counterweight frame, the middle part of the upper end of the counterweight frame is connected to the main limb of the balance arm, and the box type counterweight is characterized in that: the upper end of the strip-shaped counterweight frame is provided with three counterweight group blocks which are matched with the shape of the strip-shaped counterweight frame and are arranged at the middle part and two sides of the strip-shaped counterweight frame, and each counterweight group is formed by connecting an upper counterweight block and a lower counterweight block through a positioning pin; the inner and outer sides of the counterweight blocks on the counterweight block groups on the two sides are respectively connected with the main limbs of the balance arms and the strip-shaped counterweight frame through pull plates; two sides of the balancing weight on the middle balancing weight group are respectively connected with the main limbs of the balancing arm through pulling plates.

By adopting the structure, the counterweight support adopts a strip-shaped structure, and the counterweight group on the counterweight support is adaptive to the shape of the counterweight support, so that the tail part of the whole counterweight arm has a compact structure and small occupied space, the turning radius of the tower crane is greatly reduced, and the movable-arm tower crane meets the use requirement of narrower working conditions. The utility model has the advantages of simple structure and reasonable design, filled the blank of this type of box counter weight, be worth extensive popularization and application. And simultaneously, the utility model discloses link together with the balance arm afterbody, can effectively avoid the counter weight that the swing arm tower crane gyration appears often and the condition that the balance arm breaks away from, improved the safety of hoist widely.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of FIG. 1;

fig. 3 is a schematic structural view of the elongated counterweight housing of the present invention;

fig. 4 is a schematic structural view of the pulling plate of the present invention;

FIG. 5 is a side view of FIG. 4;

FIG. 6 is a schematic connection diagram of the outer pulling plate of the present invention;

fig. 7 is a schematic structural view of the lower counterweight block of the present invention.

Detailed Description

As shown in fig. 1 to 7, the utility model discloses a rectangular shape counter weight frame 1 on the main limb of balance arm is connected at upper end middle part, and this rectangular shape counter weight frame 1 upper end is equipped with the middle part that suits rather than the shape and the three counterweight group in both sides, and every counterweight group is connected through the locating pin 17 on lower counterweight upper portion by upper and lower two counterweights and is constituted. Wherein, the counterweight groups on the two sides are respectively composed of an upper counterweight block 6, a lower counterweight block 5, an upper counterweight block 8 and a lower counterweight block 2; the middle counterweight group consists of an upper counterweight block 7 and a lower counterweight block 4. The inner and outer sides of the balancing

weights

6 and 8 on the balancing weight blocks on the two sides are respectively connected with the main limb of the balancing arm and the strip-shaped balancing weight 1 frame through the pulling plate 3. Two sides of the balancing weight 7 on the middle balancing weight group are respectively connected with the main limbs of the balancing arm through the pulling plate 1.

The middle part of the upper end of the elongated counterweight frame 1 is provided with a double-lug plate 12 connected with the main limb of the balance arm through a single-lug plate 18 of the balance arm; the two sides are respectively provided with a counterweight frame single lug plate 10 and a lifting lug 11 for hoisting; the front part and the rear part of the upper end are respectively provided with a counterweight frame positioning pin 9 for connecting the

lower counterweight blocks

2 and 5 at two sides.

The pulling plate 3 consists of a pulling plate body 3-2 in the middle, an upper double-lug plate 3-1 and a lower double-lug plate 3-3 at the upper end and the lower end of the pulling plate body; both sides of the upper parts of the

upper balancing weights

6, 7 and 8 are provided with balancing weight single lug plates 16, and the upper ends of the pulling plates 3 at both sides of each balancing weight group are respectively connected with the

upper balancing weights

6, 7 and 8 single lug plates 16 through upper double lug plates 3-1, pin shafts 13 and cotter pins 14; the lower ends of the pull plates 3 at the outer sides of the counterweight block groups at the two sides are connected with the counterweight frame single lug plate 10 through lower lug plates 3-3, a pin shaft 13 and a split pin 14; the lower ends of the pull plates 3 at the inner sides of the counterweight blocks at the two sides and at the two sides of the middle counterweight block are connected with the main limbs of the balance arms through lower ear plates 3-3.

The upper parts of the

upper balancing weights

6, 7 and 8 are all provided with guardrails 15.

Claims

1. The utility model provides a box counter weight of swing arm tower crane, includes that upper end middle part connects rectangular shape counter weight frame (1) on the balance arm main limb, characterized by: the upper end of the strip-shaped counterweight frame (1) is provided with three counterweight block groups which are adaptive to the shape of the counterweight frame and are arranged at the middle part and two sides of the counterweight frame, and each counterweight block group is formed by connecting an upper counterweight block and a lower counterweight block through a positioning pin (17); the inner and outer sides of the balancing weights (6, 8) on the balancing weight block groups on the two sides are respectively connected with the main limbs of the balancing arms and the strip-shaped balancing weight frame (1) through the pulling plate (3); two sides of the upper balancing weight (7) of the middle balancing weight group are respectively connected with the main limbs of the balancing arms through the pulling plates (3).

2. The box counterweight of the jib tower crane according to claim 1, wherein: the middle part of the upper end of the elongated counterweight frame (1) is provided with a double-lug plate (12) connected with the main limb of the balance arm through a single-lug plate (18) of the balance arm; the two sides are respectively provided with a counterweight frame single lug plate (10) and a lifting lug (11) for hoisting; the front part and the rear part of the upper end are respectively provided with a counterweight frame positioning pin (9) used for connecting lower counterweight blocks (2, 5) on two sides.

3. The box type counterweight of the jib tower crane according to claim 1 or 2, wherein: the pulling plate (3) is composed of a pulling plate body (3-2) in the middle, an upper double-lug plate (3-1) and a lower double-lug plate (3-3) at the upper end and the lower end of the pulling plate body.

4. The box type counterweight of the jib tower crane according to claim 1 or 2, wherein: both sides of the upper part of each upper balancing weight (6, 7, 8) are provided with a balancing weight single lug plate (16), and the upper ends of the pull plates (3) at both sides of each balancing weight are respectively connected with the single lug plates (16) of the upper balancing weights (6, 7, 8) through an upper double lug plate (3-1), a pin shaft (13) and a cotter pin (14); the lower ends of the pull plates (3) at the outer sides of the counterweight block groups at the two sides are connected with the single lug plate (10) of the counterweight frame through the lower lug plate (3-3), the pin shaft (13) and the split pin (14); the lower ends of the pull plates (3) at the inner sides of the counterweight blocks at the two sides and at the two sides of the middle counterweight block are connected with the main limbs of the balance arm through lower ear plates (3-3).

5. The box type counterweight of the jib tower crane according to claim 1 or 2, wherein: the upper parts of the upper balancing weights (6, 7 and 8) are provided with guardrails (15).