A steel bar breaking device suitable for narrow spaces

Abstract

The invention discloses a steel bar rescue device suitable for narrow spaces. The steel bar rescue device is provided with a clamping structure at the cutting end, and the feeding and clamping of the device are the same driving force, which is clamped first and then cut. convenient. Moreover, the introduction of elastic rubber pads in the clamping structure ensures the stability of the main cutting force, reduces the minimum feed speed, and protects the grinding wheel; in addition, the feed system composed of the force sensor and the screw slider mechanism can provide real-time feedback Adjust the grinding force signal in the feed direction to reduce the secondary damage to the human body. The transmission mode of the main shaft mechanism is belt transmission, which protects the motor and reduces the noise emission compared with the traditional gear transmission. Compared with traditional rescue tools, the steel bar rescue device of the present invention has the advantages of reducing the vibration of metal foreign objects, low temperature rise of steel bars, high safety, rescue in narrow spaces, etc., and can significantly reduce secondary injuries to the human body during the rescue process.

Description

technical field [0001] The invention relates to the technical field of emergency rescue tools, in particular to a reinforcement demolition device suitable for narrow spaces. [0002] technical background [0003] With the rapid development of urbanization in our country, the number of construction sites has increased greatly. In the process of construction on construction sites, due to problems such as inadequate implementation of safety measures, accidents of construction workers' bodies being penetrated by metal foreign objects such as steel bars and steel pipes have occurred frequently. Most of the building materials in our country are reinforced concrete structures. After earthquakes and other disasters, buildings collapse, and it is very easy for the steel bars used in buildings to penetrate the human body. The above situation is often accompanied by complex rescue scenes, the injured are fixed in a small space, and conventional rescue tools are not easy to cut and resc...

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

Images