A flexible connection rock splitting rod

Abstract

The invention relates to a flexible connection rock splitting rod, which belongs to the field of mine construction. Its technical scheme: the oil cylinder includes a cylinder body, a piston and a cylinder head, the piston is installed in the cylinder body, and the cylinder head is installed at the end of the cylinder body; the upper and lower oil inlets are arranged radially close to the cylinder head; together and connected by a ball head and a ball seat. The invention fundamentally solves the problem of stress concentration of splitting rods caused by irregular rock holes; the oil cylinder adopts spring reset and only needs oil supply from one side, which simplifies the oil circuit design of the splitting device and is convenient for processing and manufacturing.

Description

technical field [0001] The invention relates to a rock splitting device, belonging to the field of mine construction. Background technique [0002] Hydraulic rock splitting machine is the use of hydraulic machinery to split rocks. The rapid expansion and cracking of the rock facilitates the efficient crushing of the stone, and the rock crushing has great technical advantages under the condition that explosives cannot be used in mining and construction earthwork. Hydraulic rock splitting machine uses hydraulic pressure to expand and split the rock, without vibration and sound, splitting and breaking the rock. It can easily break thousands of cubic meters of hard rock, and is powerful enough to achieve the construction effect of large spacing and large cracks even if there is no volley surface, which is unique in the hydraulic splitting machine industry. It is more than ten times faster and less expensive than using a breaker, expansion breaker, and roulette cutter. [0003...

AI Technical Summary

Problems solved by technology

There are the same problems as the conventional wedge-shaped splitting rod: 1. The splitting range of the splitting rod is very limited, and the use conditions of the splitting rod are limited; 2. Due to the irregular rock drilling, the splitting rod is locally stressed, causing Splitting Rod Bending Damage

The problem with this technology is that not every cylindrical hole drilled on the rock meets the standard, and the shape of the cylindrical hole may be irregular due to the negligence of the construction personnel or the defect of the equipment. The pressure is high everywhere on the rod, and when the irregularity of the cylindrical hole is serious, it will cause cracks or the whole part of the splitting rod will be broken due to uneven force.

However, this technical solution is to use multiple oil cylinders in series, and the rigid connection between the oil cylinders cannot fundamentally avoid the problem of uneven force on the splitting rod caused by the irregularity of the cylinder drilled from the rock.

[0007] To sum up, the existing hydraulic splitting rod adopts a miniaturized design to reduce the size of the rock opening, which will face the problem of uneven force on the splitting rod due to irregular rock holes, resulting in deformation and damage to the splitting rod

If the wall thickness of the splitting rod cylinder is increased to increase its strength, the diameter of the splitting rod will be too large, and larger rock holes will need to be opened, which will increase the construction cost in the early stage.

In addition, the split design of multiple oil cylinders is adopted, the oil cylinders are fixedly connected, and a single oil cylinder can be replaced, but it cannot fundamentally solve the problem of local stress concentration of the splitting rod

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