| 摘要 |
A gang form pulling device is provided to pull up a gang form easily by moving a main body and a cylinder rod of a hydraulic cylinder repeatedly while preventing slip of the hydraulic cylinder effectively. A gang form pulling device(100) pulls up a gang form by connecting a hook of a fixture formed on a hydraulic cylinder with the gang form and operating the hydraulic cylinder. The device comprises a hydraulic cylinder(10) installed on a working rod(3) and composed of a main body(12) having a cylinder rod(11), primary/secondary cylinder grooves, primary/secondary fixing pipes(15,16) connected with a hydraulic hose to move the cylinder rod, a fixture(2) provided with a hook(1) to pull up a gang form and primary/secondary bearing rollers(17,18) contacted with the working rod to reduce friction between the hydraulic cylinder and the working rod, thereby to prevent overload caused by pulling up the gang form, an upper jaw housing(20) coupled to the lower part of the cylinder rod and provided with a primary housing groove and a primary support projection, a lower jaw housing(30) coupled to the main body in the hydraulic cylinder and provided with a secondary housing groove and a secondary support projection, a jaw clamp(40) installed on the working rod in the upper and lower jaw housings and composed of a head having a rod groove and fitting grooves and coupled with coupling pipes and a jaw having fitting projections inserted to the fitting grooves of the head and a saw-toothed screw, an elastic member(50) provided to the primary and secondary support projections of the upper and lower jaw housings to support the jaw clamp, and a moving pipe(60) formed in a C-shape to press the coupling pipes coupled to the head of the jaw clamp and to move the jaw clamp downward to make each jaw move freely and composed of a hook suspended on the primary and secondary fixing pipes of the main body of the hydraulic cylinder, a vertical bar connected with the hook and fitted to the coupling pipe inserted to the jaw clamp and a handle connecting vertical bars.
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