Steel bar forcible entry device suitable for narrow space

Abstract

The invention discloses a steel bar forcible entry device suitable for a narrow space. A clamping structure is arranged at the cutting end of the steel bar forcible entry device, feeding and clampingof the device share the same driving force, clamping is conducted before cutting, and use is convenient. Moreover, an elastic rubber pad is introduced into the clamping structure, so that the stability of a main cutting force is ensured, a minimum feeding speed is reduced, and a grinding wheel is protected; Besides, a feeding system composed of a force sensor and a lead screw sliding block mechanism can feed back a grinding force signal for adjusting a feeding direction in real time, and secondary harm to the human body is reduced. A transmission mode of a main shaft mechanism is belt transmission, and compared with traditional gear transmission, an motor is protected, and the noise production amount is reduced. Compared with a traditional forcible entry rescue tool, the steel bar forcibleentry device has the advantages of being capable of reducing vibration of metal foreign matter, low in steel bar temperature rise, high in safety, capable of conducting rescue in a narrow space and the like, and secondary harm to the human body in the rescue process can be remarkably reduced.

Description

Technical field[0001]The present invention relates to the technical field of emergency rescue tools, and is specifically a steel bar dismantling apparatus suitable for small space.[0002]technical background[0003]With the rapid development of urbanization in my country, the number of construction sites has increased. During the construction of construction sites, due to the problems such as safety measures, the accidents of the construction workers were repeatedly occurred by steel foreign objects such as steel bars and steel pipes. Most of my country's house building materials are collapsed after reinforced concrete structures, earthquakes, etc., and the steel bars used by the building are used through the body. The above situation is often accompanied by complicated rescue scenes. The injured personnel are fixed within the narrow space, and the routine rescue tools are not easy to cut rescue.[0004]For the above mentioned, how to safely and smoothly cut off the steel bar through the...

AI Technical Summary

Problems solved by technology

The open patent CN110682198A discloses a cutting tool with flexible feed for inner circular grinding discs. In this patent, the inner hole of the grinding wheel is used to cut the steel bar, and the fixed arc length cutting is realized by the flexible feed mechanism. However, according to many actual situations on site, using this The tool cannot fix the steel bar in the working area, and the scope of application is narrow; the existing rescue equipment is generally divided into three categories: hydraulic shears, steel bar quick breakers and high-speed grinding wheels for the situation of steel bars penetrating into the human body.

Hydraulic shears and steel bar quick breakers are powered by hydraulic pressure. Metal hydraulic shears place the hydraulic power device outside, and the shearing device is light, but it needs to carry a hydraulic pump when working. The main body of the hydraulic pump is heavy and difficult to carry. It is suitable for complex situations in the rescue scene; the steel bar quick breaker installs the hydraulic pump to the cutting body, which has a high degree of integration, but the weight of the cutting body increases, which increases the difficulty of manipulation; and the working principle of the hydraulic shear and the steel bar quick breaker are both The steel bar is cut with instantaneous high shear stress, which will generate a huge impact force on the steel bar at the moment of cutting, and this impact force will increase the disturbance of the steel bar. On the one hand, this disturbance will aggravate the pain of the injured. The reinforced steel bars may damage the body tissue and blood vessels around the wound, causing secondary bleeding, which is very unfavorable to rescue; there are two kinds of high-speed grinding wheels commonly used, one is toothless saw, and the other is double Wheel cutting saws, both of which cut steel bars by grinding metal with cutting blades, but their power sources are generally motor gasoline engines or three-phase asynchronous motors, which are large in size and heavy in weight, and the feed of the cutting blades is Relying on manual push, the feeding force is unstable, and there is no stable steel bar clamping device, which can easily cause secondary damage to the human body

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