阅读说明：本技术 塔式起重机上部设备整体自升降装置 (Integral self-lifting device for upper equipment of tower crane ) 是由 高拯铎 李洪伟 陈丽萍 才冰 史勇 于 2020-08-31 设计创作，主要内容包括：本发明公开了一种塔式起重机上部设备整体自升降装置,包括通过固定地脚固定在地面上、由多个标准节构的塔身,该塔身外侧套装有顶升套架,上部通过销轴与回转总成的下部连接；回转总成的上部通过销轴与塔头连接；在塔头外侧套装有通过销轴与其连接的外包塔头,该外包塔头两侧分别通过销轴连接平衡臂及臂架总成,下端置于顶升套架上部。本发明能够满足塔式起重机在施工中遇大风及恶劣天气等情况下,避免塔式起重机上部结构失稳倾翻,实现塔机上部整体自升降要求。本发明结构简单、设计合理,整体结构人性化,大幅度增加了塔式起重机的安全性。(The invention discloses an integral self-lifting device for upper equipment of a tower crane, which comprises a tower body, a lifting sleeve frame and a rotary assembly, wherein the tower body is fixed on the ground through fixed feet and is constructed by a plurality of standard sections; the upper part of the rotary assembly is connected with the tower head through a pin shaft; the outer side of the tower head is sleeved with an outer-coated tower head connected with the tower head through a pin shaft, the two sides of the outer-coated tower head are respectively connected with a balance arm and an arm support assembly through pin shafts, and the lower end of the outer-coated tower head is arranged at the upper part of the jacking sleeve frame. The invention can meet the requirements of the tower crane on the instability and the tipping of the upper structure of the tower crane in the conditions of strong wind, severe weather and the like during construction, and the integral self-lifting requirement of the upper part of the tower crane is realized. The invention has simple structure, reasonable design and humanized overall structure, and greatly improves the safety of the tower crane.)

1. The integral self-lifting device for the upper equipment of the tower crane comprises a tower body (7) which is fixed on the ground through fixed ground feet (8) and is formed by a plurality of standard sections, wherein a lifting sleeve frame (6) is sleeved on the outer side of the tower body (7), and the upper part of the tower body is connected with the lower part of a rotary assembly (5) through a pin shaft; the upper part of the rotary assembly (5) is connected with the tower head (3) through a pin shaft; the method is characterized in that: the outer side of the tower head (3) is sleeved with an outer-wrapping tower head (2) connected with the outer-wrapping tower head through a pin shaft (9), two sides of the outer-wrapping tower head (2) are respectively connected with a balance arm (1) and an arm support assembly (4) through pin shafts, and the lower end of the outer-wrapping tower head is arranged at the upper part of the jacking sleeve frame (6).

2. The integrated self-lifting device for the upper part equipment of the tower crane according to claim 1, which is characterized in that: the outsourcing tower head (2) comprises a hollow frame (2-2), and upper chord ear plates (2-1) connected with the balance arm (1) and the arm support assembly (4) are respectively arranged on two sides of the upper part of the hollow frame (2-2); the lower part is provided with a plurality of lower ear plates (2-3) connected with the jacking sleeve frame (6); the outer side of the middle part is provided with an arm support lower chord pressing plate (2-4) and a locking inclined plate (2-6), and the inner side is provided with a plurality of guide wheels (2-5) supported on a main beam of a tower body (7).

3. The integrated self-lifting device for the upper part equipment of the tower crane according to claim 2, which is characterized in that: after the balance arm (1) and the arm support assembly (4) are respectively connected with the outer wrapping tower head (2) through the ear plates, the pin shafts and the upper chord ear plates (2-1) on the inner sides of the balance arm (1) and the arm support assembly (4), the upper ear plates (10) arranged on the upper parts of the ear plates on the inner sides of the balance arm (1) and the arm support assembly (4) are connected with the outer ear plates (11) on two sides of the upper beam (12) of the tower head (3) through the pin shafts (9), so that the outer wrapping tower head (2) is connected with the tower head (3).

Technical Field

The invention belongs to the technical field of tower cranes, and relates to an integral self-lifting device for upper equipment of a tower crane.

Background

In the construction operation of engineering construction, the marine climate environment is more, and the windward area of the upper part of the tower crane is larger and the probability of the whole tipping is larger under the conditions of strong wind, severe weather and the like in the construction. Limited by the existing structure, if the tower body is lowered without disassembling the standard section after the tower is erected, the arm support and the balance arm can not be lifted freely. On the premise of ensuring safety and not reducing functions, the requirement that the arm support and the balance arm of the tower crane quickly and automatically lift is met, and the method is a new direction for diversified development of the tower crane.

Disclosure of Invention

The invention aims to provide the integral self-lifting device of the upper equipment of the tower crane, which has a simple structure and reasonable design and can effectively overcome the defects that the tower body is lowered without disassembling a standard knot and an arm support and a balance arm cannot be lifted freely in the existing tower crane.

The technical scheme adopted by the invention is as follows: the self-lifting device comprises a tower body which is fixed on the ground through fixed ground feet and is constructed by a plurality of standard sections, wherein a lifting sleeve frame is sleeved on the outer side of the tower body, and the upper part of the tower body is connected with the lower part of a rotary assembly through a pin shaft; the upper part of the rotary assembly is connected with the tower head through a pin shaft; the method is characterized in that: the outer side of the tower head is sleeved with an outer-coated tower head connected with the tower head through a pin shaft, the two sides of the outer-coated tower head are respectively connected with a balance arm and an arm support assembly through pin shafts, and the lower end of the outer-coated tower head is arranged at the upper part of the jacking sleeve frame.

By adopting the structure, when the tower crane works, the outsourcing tower head is connected with the tower head, the arm support assembly and the balance arm through the pin shafts respectively, the lower part of the outsourcing tower head is separated from the jacking sleeve frame, and the sleeve frame returns to a position below the rotary support, so that the normal rotation and suspension state of the tower crane is realized; when the tower crane is in a self-lifting state, the jacking sleeve frame jacks to the lower part of the outer-coated tower head and is connected with the outer-coated tower head through a pin shaft, the pin shaft for connecting the outer-coated tower head with the tower head is disassembled from the upper part, so that the arm support assembly, the balance arm, the outer-coated tower head and the jacking sleeve frame are integrated, the integral lifting process of the upper part of the tower crane is completed by utilizing the jacking device of the tower crane, and the free lifting can be realized under the condition of not lowering the. The invention can meet the requirements of the tower crane on the instability and the tipping of the upper structure of the tower crane in the conditions of strong wind, severe weather and the like during construction, and the integral self-lifting requirement of the upper part of the tower crane is realized. The invention has simple structure, reasonable design and humanized overall structure, and greatly improves the safety of the tower crane.

Drawings

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

FIG. 2 is a schematic diagram illustrating a jacking state of the present invention;

FIG. 3 is a schematic view of the working state of the present invention;

FIG. 4 is a schematic view of the present invention in a self-lifting state;

fig. 5 is a schematic structural view of the head of the outsourcing tower of the invention.

Detailed Description

As shown in figure 1, the invention comprises a tower body 7 which is fixed on the ground through a fixed foot 8 and is composed of 3 standard sections, a jacking sleeve frame 6 controlled by a jacking device of a tower crane is sleeved outside the tower body 7, and the upper part of the tower body is connected with the lower part of a rotary assembly 5 through a pin shaft. The upper part of the rotary assembly 5 is connected with the tower head 3 through a pin shaft. The outer side of the tower head 3 is sleeved with an outer-coated tower head 2 connected with the outer-coated tower head through a pin shaft 9, two sides of the outer-coated tower head 2 are respectively connected with a balance arm 1 and an arm support assembly 4 through pin shafts, and the lower end of the outer-coated tower head is arranged at the upper part of the jacking sleeve frame 6.

As shown in fig. 2, the pin shaft connecting the tower head 3 and the upper part of the slewing assembly is detached; and the jacking system can be started to normally carry out jacking operation, so that the number of standard knots and the height of the tower crane are increased or reduced.

As shown in fig. 3, when the tower crane reaches the free height, the pin shaft connecting the outer-coated tower head 2 and the jacking sleeve frame 6 is detached, the jacking sleeve frame 6 descends to a position below the slewing assembly 5, and the jacking cross beam and the hanging shoe are fixed at a fixed position below the slewing assembly 5, so that the tower crane can normally perform slewing operation.

As shown in fig. 4, when the working environment meets a strong wind weather or an urgent need to drop the boom assembly 4 and the balance arm 1 to the ground, the jacking sleeve frame 6 can be lifted to the lower part of the outsourcing tower head 2 and connected by using the pin shaft, the pin shaft 9 connecting the outsourcing tower head 2 and the tower head 2 is disassembled, and the jacking device is started, so that the boom assembly 4 and the balance arm 1 can be quickly dropped to the ground.

As shown in fig. 5, the outsourcing tower head 2 comprises a hollow frame 2-2, and upper chord ear plates 2-1 connected with a balance arm 1 and an arm support assembly 4 are respectively arranged at two sides of the upper part of the hollow frame 2-2; the lower part is provided with a plurality of lower ear plates 2-3 connected with the jacking sleeve frame 6; the outer side of the middle part is provided with an arm support lower chord pressing plate 2-4 and a locking inclined plate 2-6, and the inner side is provided with a plurality of guide wheels 2-5 supported on a main beam of a tower body 7.

As shown in fig. 1 and 5, after the balance arm 1 and the boom assembly 4 are respectively connected to the tower head 2 through the inner ear plates, the pin shafts and the upper chord ear plates 2-1, the upper ear plates 10 disposed at the upper portions of the inner ear plates of the balance arm 1 and the boom assembly 4 are connected to the outer ear plates 11 at both sides of the upper beam 12 of the tower head 3 through the pin shafts 9, so that the tower head 2 and the tower head 3 are connected together.