Integral rescue accessory for forcible entry and core drill

Patent metadata

Field	Value
Publication number	US-10245758-B2
Application number	US-201615534689-A
Country	US
Kind code	B2
Filing date	Oct 27, 2016
Priority date	Apr 14, 2016
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

An integral rescue accessory for forcible entry and core drill may include hydraulic wall saws, a rotating platform, and a coring claw. Two hydraulic wall saws are symmetry installed on rotating platform. The wall saws cut linearly with the rotation of rotating platform to open a rectangular tunnel on a reinforced concrete wall or floor. After the cutting process, coring process is finished by the wall saws and claw inclinedly mounted to ensure the security of rescue. The whole accessory is installed on a large engineering machine through a hydraulic joint. The present disclosure can transfer general large mechanical equipment into dedicated large mechanical equipment quickly.

First claim

What is claimed is:

1. An integral rescue accessory for forcible entry, the accessory comprising:
hydraulic wall saws, a rotating platform, and a coring claw
the hydraulic wall saws including: a diamond saw blade, a wall saws support frame, a wall saws linear slider, a hydraulic motor, a hydraulic arm, a wall saws mounting, a wall saws guide roller, a wall saws travel motor, a wall saw hydraulic joint and a spline, wherein:
the diamond saw blade is driven by the hydraulic motor to proceed cutting downwardly by swinging the hydraulic arm;
at least the hydraulic wall saws, the hydraulic motor, and the hydraulic arm are installed on the linear slider and are driven by the wall saws travel motor, the guide roller guides at least the hydraulic wall saws, the hydraulic motor, and the hydraulic arm along the spline to proceed straight-line cutting;
the wall saws support frame and the wall saws mounting are installed at a certain angle that makes the angle between the diamond saw blade and a cutting plane 80°;
the rotating platform including a general hydraulic joint, rack, a rotating platform, a turntable and a servomotor;
the top of the rack connects with the general hydraulic joint which is configured to connect to a large-scale engineering equipment, the bottom of the rack connects with the rotating platform;
the coring claw including a claw hydraulic drive cylinder, a claw connector, a claw, a claw mounting bracket, a hydraulic drive cylinder mounting bracket, a claw arranging slider, and a claw linear guideway; two claw mounting brackets are arranged on the turntable, the claw hydraulic drive cylinder is arranged on two claw mounting brackets, and the claw hydraulic drive cylinder connects with a claw via the claw connector;
an extension and recovery of the claw is driven by telescoping of the hydraulic cylinder; the claw is arranged on a claw arranging slider configured to slide along the claw linear guideway; and
the claw mounting bracket is designed with a certain angle to make the angle between the claw and the cutting plane normal 80° such that the claw extends into a gap created by the hydraulic wall saws.

2. The accessory of claim 1 , wherein the diamond saw blade and claw are arranged with an angle of 80° with the cutting plane, and an oblique plane is formed by through-cutting to prevent falling of a concrete block cut by the hydraulic wall saws and to allow coring by the claw.

3. The accessory of claim 1 , wherein the diamond saw blade is configured to cut reinforced concrete ruins to prevent significant impact and shake, and a rectangular exit is cut by means of integral rotation of the cutting saw blade.

4. The accessory of claim 1 , wherein two saws are symmetrically distributed to improve simultaneousness and working efficiency, and unbalanced force and torque are reduced due to a high degree of symmetry of the accessory.

5. The accessory of claim 1 , wherein the hydraulic joint connects with an engineering machinery hydraulic system.

Assignees

• Univ Beijing Technology

Inventors

• Zhao Jing
• Wu Jiawei
• Hu Weijian
• Zhang Nailong

Classifications

• B28D1/048

  with a plurality of saw blades (B28D1/046 takes precedence) · CPC title

• A62B3/005

  Rescue tools with forcing action · CPC title

• A62B3/00

  Devices or single parts for facilitating escape from buildings or the like, e.g. protection shields, protection screens; Portable devices for preventing smoke penetrating into distinct parts of buildings (A62B1/00 takes precedence) · CPC title

• E04G23/082

  using shears, breakers, jaws and the like (metal-cutting or concrete-crushing implements mounted on backhoes E02F3/965) · CPC title

• E04G23/00

  Working measures on existing buildings, ({domestic cleaning of walls or floors A47L11/00; grinding floors or walls B24B7/18; removing of wall coverings B44C7/00; removing of paint from surfaces B44D3/16; electrochemical desalination or re-alkalisation C04B41/00}; on foundations E02D35/00, E02D37/00; in connection with insulations E04B; subsequent or finishing work E04F) · CPC title