CN-116607793-B - Steel construction uninstallation instrument

CN116607793BCN 116607793 BCN116607793 BCN 116607793BCN-116607793-B

Abstract

The invention relates to the technical field of steel structure building construction and discloses a steel structure unloading tool which comprises a vertical cylinder, a piston, a bottom cylinder and a movable plug, wherein the piston is movably arranged in the vertical cylinder, the top of the piston is fixedly provided with a supporting plate and is supported by dry sand filled in the vertical cylinder, the bottom cylinder is arranged at the bottom of the vertical cylinder and is communicated with the vertical cylinder, and the movable plug is movably arranged in the bottom cylinder up and down and is used for changing the volume of the bottom cylinder. The vertical cylinder and the supporting plate are arranged between the supporting frame and the steel member to play a role in supporting the steel member, when the steel member is required to be unloaded step by step, the movable plug in the bottom cylinder is gradually moved downwards to gradually increase the volumes of the vertical cylinder and the bottom cylinder, and when the supporting height is required to be lifted, the movable plug in the bottom cylinder is gradually moved upwards to gradually reduce the volumes of the vertical cylinder and the bottom cylinder, and the supporting positions of the piston and the supporting plate can be adjusted by adjusting the volumes of the vertical cylinder and the bottom cylinder, so that the using effect of the unloading tool is greatly improved.

Inventors

YU DONG
ZHAO SONG
ZHAO CHENXU
GUO YUJUN
MEI JIANGTAO
LU WENYU

Assignees

中建八局第三建设有限公司

Dates

Publication Date: 20260505
Application Date: 20230512

Claims (5)

1. A steel structure unloading tool, comprising: A vertical cylinder (1); a piston (2) which moves inside the vertical cylinder (1) and is fixedly provided with a supporting plate (3) at the top and is supported by dry sand filled inside the vertical cylinder (1); the bottom cylinder (7) is arranged at the bottom of the vertical cylinder (1) and is communicated with the vertical cylinder (1), and a movable plug (8) is movably arranged in the bottom cylinder and is used for changing the volume of the bottom cylinder (7); a sleeve (4) is fixedly arranged at the bottom of the supporting plate (3), and the sleeve (4) is movably sleeved on the vertical cylinder (1); the outer wall of the vertical cylinder (1) is uniformly provided with limit strips (5), and the inner wall of the sleeve (4) is uniformly provided with limit grooves (6) coupled with the limit strips (5); The bottom of the movable plug (8) is rotationally connected with a screw rod (9), the screw rod (9) is in threaded connection with a screw nut (10), and the screw nut (10) is fixedly arranged on a tail plate (11) at the bottom end of the bottom cylinder (7); the bottom of the movable plug (8) is fixedly provided with a plug rod (12), and the plug rod (12) is movably inserted on the tail plate (11); The inner side wall of the bottom cylinder (7) is in through connection with a sand discharge pipe (13), the tail end of the sand discharge pipe (13) extends to the outside of the bottom cylinder (7), and a sand discharge valve (14) is arranged on the sand discharge pipe.
2. A steel construction unloading tool according to claim 1, characterized in that a supporting frame is also provided, the shaft (1) and the supporting plate (3) being arranged between the supporting frame and the steel member (21).
3. A steel structure unloading tool as defined in claim 2, wherein the supporting frame is composed of a transverse plate (15) and supporting legs (16) uniformly arranged at the bottom of the transverse plate (15); The top of the transverse plate (15) is provided with a containing groove (17) for containing the vertical cylinder (1), and the bottom of the containing groove (17) is provided with a through groove (18) for containing the bottom cylinder (7); flower grooves (19) are uniformly formed in the side wall of the accommodating groove (17), and splines (20) coupled with the flower grooves (19) are uniformly formed in the outer wall of the vertical cylinder (1).
4. A steel structure unloading tool according to claim 3, wherein the left and right sides of the top of the cross plate (15) are further provided with sub-braces (22) for supporting the steel member (21).
5. The steel structure unloading tool according to claim 4, wherein the bottom end of the auxiliary stay bar (22) is movably inserted into a vertical groove (23) formed on the transverse plate (15); A side groove (24) is formed between the inner side wall of the vertical groove (23) and the outer peripheral wall of the transverse plate (15), and a backing plate (25) for backing up the auxiliary stay bar (22) is arranged in the side groove (24) in a sliding manner.

Description

Steel construction uninstallation instrument Technical Field The invention relates to the technical field of steel structure building construction, in particular to a steel structure unloading tool. Background After the steel structure main body structure is installed to form a space stabilization system and all welding and connecting works are completed, the temporary support frames are often required to be unloaded, and particularly, for an urban exhibition hall, the irregular appearance of the urban exhibition hall determines that the stress and the unloading stroke of each point of the temporary support used in the construction are different, so that a simple, easy-to-use and convenient-to-adjust unloading tool is needed; The hydraulic jack is mainly adopted for jack unloading, the steel member achieves the purpose of up-down displacement through the lifting force of the jack, but the existing jack unloading technology has the problems of poor working performance and environmental protection, the hydraulic oil system is easy to produce hydraulic oil leakage to pollute the environment due to long-term loading of the jack, meanwhile, the pressure loss can also lead the jack to abnormally perform cylinder shrinkage movement, the working state is out of control, the structural safety is adversely affected, and potential safety hazards exist. The rigid support direct cutting method is generally used for unloading under the working conditions of small tonnage and small stroke, and has the defects of low synchronous control precision and the like in the unloading of a steel structure, and because the support top is required to be cut by artificial oxy-acetylene flame in a sectional cutting way, uneven cutting marks can appear on the cutting surface of the end part after the cutting of a certain stage is completed due to the influences of a cutting angle, a hot melting range and a cutting line, and the unloading displacement precision is influenced. The sand box unloading is used as a more traditional unloading mode, and has the following problems: 1. the gap between the inner cylinder and the outer cylinder of the traditional sand box is larger, the waterproof effect is poor, sand is easy to damp and agglomerate due to the damp of inflow water, and the sand cannot be discharged freely; 2. The traditional sand box can only control the descending of displacement through sand discharge, but can not be effectively lifted, and in the installation stage and the adjustment stage of the sand box, the sand box which can not be displaced upwards can bring much trouble, so that the support precision of a steel structure is poor; based on this we propose a steel structure unloading tool. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a steel structure unloading tool which has the advantages of good sealing effect and capability of enabling a supporting plate to move upwards. In order to achieve the purposes of good sealing effect and upward displacement of the supporting plate, the invention provides the following technical scheme that the steel structure unloading tool comprises: A vertical tube; A piston which is movably arranged in the vertical cylinder and is fixedly provided with a supporting plate at the top and is supported by dry sand filled in the vertical cylinder; The bottom barrel is arranged at the bottom of the vertical barrel and is communicated with the vertical barrel, and a movable plug is movably arranged in the bottom barrel up and down and is used for changing the volume of the bottom barrel. As a preferable technical scheme of the invention, the bottom of the supporting plate is fixedly provided with a sleeve, and the sleeve is movably sleeved on the vertical cylinder. As a preferable technical scheme of the invention, the outer wall of the vertical cylinder is uniformly provided with the limit strips, and the inner wall of the sleeve is uniformly provided with limit grooves which are coupled with the limit strips. As a preferable technical scheme of the invention, the bottom of the movable plug is rotatably connected with a screw rod, the screw rod is in threaded connection with a nut, and the nut is fixedly arranged on a tail plate at the bottom end of the bottom cylinder. As a preferable technical scheme of the invention, the bottom of the movable plug is fixedly provided with the inserted rod, and the inserted rod is movably inserted on the tail plate. As a preferable technical scheme of the invention, the inner side wall of the bottom cylinder is connected with a sand discharge pipe in a penetrating way, the tail end of the sand discharge pipe extends to the outside of the bottom cylinder, and a sand discharge valve is arranged on the tail end of the sand discharge pipe. As a preferable technical scheme of the invention, a supporting frame is further arranged, and the vertical tube and the supporting plate are arranged between the supporting frame and the