KR-102961790-B1 - Column bending moment adaptive balancing mechanism

KR102961790B1KR 102961790 B1KR102961790 B1KR 102961790B1KR-102961790-B1

Abstract

A column bending moment adaptive balancing mechanism is disclosed, comprising a column (10), a masthead (20), a work device (30), a lever-type balancing mechanism (40), a winch steel wire rope (50), and a back rope (60). The masthead (20) comprises a masthead frame (21) and a forward fixed pulley block (22), wherein the masthead frame (21) is mounted on the column (10) and the forward fixed pulley block (22) is mounted on the front end of the masthead frame (21). A work device (30) is mounted on the column (10); a lever-type balancing mechanism (40) is hinge-coupled to the masthead frame (21); A winch steel wire rope (50) passes through the masthead frame (21), then is wound several times between the front fixed pulley block (22) and the movable pulley block (31) of the work device (30), passes through one end of the lever-type balancing mechanism (40), and is finally fixed to the masthead frame (21); a back rope (60) is connected to the other end of the lever-type balancing mechanism (40). The column bending moment adaptive balancing mechanism can adaptively reduce the bending moment of the column, improve the stability of the column, reduce the deformation of the column, and improve the hole forming quality of the equipment.

Inventors

주 젠신
첸 질린
탄 롱
허우 루이챠오

Assignees

선워드 인텔리전트 이큅먼트 컴퍼니, 리미티드
센트럴 사우스 유니버시티

Dates

Publication Date: 20260507
Application Date: 20221102
Priority Date: 20211228

Claims (10)

In an upright column bending moment adaptive balancing device comprising an upright column, a masthead, a working device, a lever-type balancing device, a wound steel wire rope, and a back rope: The masthead comprises a masthead bracket and a forward fixed pulley block, wherein the masthead bracket is mounted on the upright column and the forward fixed pulley block is mounted on the front end of the masthead bracket; The above working device is mounted on the upright column and positioned corresponding to the front fixed pulley block; The lever-type balancing device is hinged to the rear end of the masthead bracket; The above-mentioned wound steel wire rope is fed into the interior of the masthead bracket along the longitudinal direction of the masthead bracket between the upright column and the hinge point where the lever-type balancing device is hinge-connected to the masthead bracket, and then, The above-mentioned work device is mutually wound onto the front fixed pulley block and the movable pulley block, then fed into one end of the lever-type balancing device, and then fixed to the masthead bracket, wherein one end of the lever-type balancing device is close to the front end of the masthead bracket in the longitudinal direction of the masthead bracket; The above back rope is located at the rear end of the masthead bracket and is connected to the other end of the lever-type balancing device, and An upright column bending moment adaptive balancing device, wherein the other end of the lever-type balancing device is positioned further from the front end of the masthead bracket in the longitudinal direction of the masthead bracket than the first end of the lever-type balancing device, and the hinge point is positioned between the first end and the other end of the lever-type balancing device in the longitudinal direction of the masthead bracket.
An upright column bending moment adaptive balancing device according to claim 1, wherein the lever-type balancing device is positioned along the height direction of the masthead bracket and the hinge axis between the lever-type balancing device and the masthead bracket is positioned along the width direction of the masthead bracket.
In claim 1 or 2, the lever-type balancing device comprises a hinge bracket and a connecting device, wherein the hinge bracket is hinge-coupled to the masthead bracket, the connecting device is connected to one end of the hinge bracket, and the back rope is connected to the other end of the hinge bracket; An upright column bending moment adaptive balancing device, wherein the wound steel wire rope is fed into the connecting device and then the wound steel wire rope is fixed to the masthead bracket.
An upright column bending moment adaptive balancing device according to claim 3, wherein the hinge bracket has a right-angled triangle shape, the hinge point of the hinge bracket is located at the connection point between two right-angled sides, the connecting device is connected to the connection point between the hypotenuse of the hinge bracket and one right-angled side, and the back rope is connected to the connection point between the hypotenuse of the hinge bracket and another right-angled side.
In paragraph 3, the connecting device comprises a connecting bracket and a balancing pulley, the connecting bracket is connected to the upper part of the hinge bracket, and the balancing pulley is mounted on the connecting bracket; An upright column bending moment adaptive balancing device, wherein the wound steel wire rope is fed into the balancing pulley and then the wound steel wire rope is fixed to the masthead bracket.
In claim 5, the balancing pulley is a vertical column bending moment adaptive balancing device arranged in the transverse direction.
An upright column bending moment adaptive balancing device according to claim 5, wherein the connecting bracket comprises a connecting bracket body and connecting lugs, the balancing pulley is mounted on the connecting bracket body, the connecting lugs are connected to the connecting bracket body, two connecting lugs are provided and spaced apart, and the connecting bracket body is connected to the hinge bracket through the two connecting lugs.
In claim 1, two hinge lugs are provided at the rear end of the masthead bracket, and the two hinge lugs are spaced apart; The lever-type balancing device is a standing column bending moment adaptive balancing device that is partially inserted between the two hinge lugs and hinge-coupled to the two hinge lugs.
In claim 1, the masthead further comprises a rear fixed pulley, and the rear fixed pulley is mounted on the rear end of the masthead bracket; An upright column bending moment adaptive balancing device, wherein after the wound steel wire rope passes through the rear fixed pulley, the wound steel wire rope is fed into the front fixed pulley block.
In claim 9, the masthead comprises a transition fixed pulley, the transition fixed pulley being mounted on the masthead bracket and positioned behind the forward fixed pulley block; An upright column bending moment adaptive balancing device, wherein the wound steel wire rope is withdrawn from the forward fixed pulley block and the movable pulley block of the work device, the wound steel wire rope passes through the transfer fixed pulley, and then is fed into the lever-type balancing device.

Description

Column bending moment adaptive balancing mechanism The present application claims priority to Chinese patent application No. 202111633140.9, filed with the National Intellectual Property Administration of China on December 28, 2021, under the title "UPRIGHT PILLAR BENDING MOMENT ADAPTIVE BALANCING MECHANISM", which is incorporated herein by reference in its entirety. This application relates to the technical field of construction machinery, and in particular to a balancing mechanism adaptive to the bending moment of an upright column. A pile frame is an indispensable piece of mechanical equipment for modern pile foundation construction and is generally used to mount diesel hammers, hydraulic hammers, vibration hammers, vibration-impact hammers, deep mixers, casing drivers, long screw drivers, and other supporting work devices for "piling" construction. Upright columns are a critical part of the pile frame, used to support the lifting force of the work device and for construction. Due to the continuous development of the construction industry, modern pile foundation construction requirements for pile frame equipment are increasing; drilling depths are becoming deeper, work devices are becoming heavier, and requirements for hole-forming accuracy are rising. Consequently, the load on upright columns is increasing, and the load-bearing capacity and deformation of the upright columns (which support and guide the work device) during construction have a significant impact on hole-forming accuracy and construction safety. Therefore, it is crucial to determine how to improve the load-bearing capacity of the upright columns and reduce their deformation. As illustrated in FIG. 1, the conventional pile frame upright column masthead structure and rope-winding method are as follows: A wound steel wire rope (5) rises from the rear of the upright column (6), passes through the rear fixed pulley (4) of the masthead (3), then passes through the front fixed pulley block (2) of the masthead (3), and is connected to the movable pulley block of the work device (1). Finally, the end of the steel rope (5) is fixed relative to the masthead (3) at a fixed point provided directly on the masthead (3). In this structure, the following problems mainly exist: because a "flange & bolt" connection mode is adopted between the upright column (6) and the masthead (3), a "dead" hinge point is formed. When the pile frame lifts the work device (1) or pulls out the pile, the upright column (6) receives a specific bending moment and generates a specific deformation. As the lifting force increases, the bending moment increases, and the deformation also increases, reducing the hole-forming accuracy. At the same time, the stress in the upright column (6) is a typical slender rod compression. When the upright column (6) is subjected to a large bending moment, the upright column (6) becomes an eccentric compression rod, and the safety factor of the compression rod of the upright column (6) is significantly reduced compared to the central compression rod. As illustrated in FIG. 2, in the prior art, to balance the bending moment of the upright column (6), a steel wire rope is generally added as a back rope (7) at the rear end of the masthead (3), and a constant force is applied to the back rope (7) to generate a reaction moment for the upright column (6), which is used to offset a portion of the bending moment applied to the upright column (6) by the weight of the work device (1) and the lifting force on the upright column (6). However, since the force applied to the upright column (6) by the back rope (7) is a fixed value, there are the following disadvantages: when the load in front of the upright column (6) is small, the upright column (6) is pulled by the back rope (7) and deforms backward, and when the load in front increases, the upright column (6) deforms forward. During pile frame construction, this unstable state cannot guarantee hole alignment, angle adjustment of the upright column (6), and the resulting construction quality. Furthermore, if the upright column (6) needs to be adjusted during construction, the force of the back rope (7) must be released first, which is cumbersome and poses a safety risk. In conventional technology, the balancing of bending moments for upright columns is not well achieved, which affects hole-forming accuracy, reduces work efficiency due to cumbersome work, and poses safety risks. Accordingly, according to the present application, an adaptive balancing mechanism for the bending moment of upright columns is provided, which can better balance the bending moment of upright columns to ensure hole-forming accuracy, improve work efficiency, and reduce safety risks. The upright column bending moment adaptive balancing mechanism comprises an upright column, a masthead, a working device, a lever-type balancing mechanism, a wound steel wire rope, and a back rope; The masthead includes a masthead bracket and a forward fixed