Hydraulic rock drill capable of achieving energy recycling
A hydraulic rock drill and energy recovery technology, applied in mechanical equipment, fluid pressure actuating devices, fluid pressure actuating system components, etc. The effect of preventing air suction and improving energy efficiency
Active Publication Date: 2020-10-16
CHINA RAILWAY CONSTR HEAVY IND
View PDF7 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] At present, the kinetic energy of rock drills on the market in the return stage is to reduce the kinetic energy of the piston and achieve braking through the throttling and heat generation of hydraulic oil. This method not only wastes energy seriously, but also brings problems of high temperature aging of hydraulic oil and pressure fluctuations. , if the return energy can be rationally used to realize energy recovery, the use cost of the rock drill will be reduced and considerable economic benefits will be brought
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0032] see figure 1 , figure 1 It is a schematic diagram of the working principle of the existing hydraulic rock drill, and the hydraulic rock drill is the prior art, and the specific structure of the hydraulic rock drill is not described here. figure 1 Among them, P0 is a low-pressure oil circuit, and P1 is a high-pressure oil circuit. The working principle of the existing hydraulic rock drill is as follows:
[0033] The impact frequency of the rock drill is high during normal drilling, and the impact of the impact piston on the shank belongs to an inelastic collision. After the piston 9 hits the end face of the shank, under the action of the stress wave, the piston 9 will return to the direction of the stroke action chamber 2 at a certain initial speed (i.e. figure 1 center to the left), since the return action chamber 8 is always high-pressure hydraulic oil, and the high-pressure accumulator 5 provides an instant emergency oil source to the high-pressure oil circuit, under...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a hydraulic rock drill capable of achieving energy recycling. A buffer cavity is formed between the end of a piston and a cylinder body, a buffer oil groove and an accelerationoil groove are sequentially formed in the cylinder body in the axial direction of the piston, an oil channel is formed in the end of the piston and communicates with the buffer cavity, a damping holeset is formed in the piston, the piston moves in the cylinder body, and the oil channel communicates with the buffer oil groove or the acceleration oil groove through the damping hole set; a first oilway is arranged between the buffer cavity and a low-pressure oil way of the rock drill, and oil is supplemented to the buffer cavity in the stroke stage of the piston or the piston is decelerated inthe return stroke stage through the first oil way; a second oil way is arranged between the acceleration oil groove and the low-pressure oil way, and hydraulic oil in the buffer cavity is discharged in the return stroke initial stage through the second oil way; and the buffer oil groove is connected with an energy recycling oil way, and kinetic energy and hydraulic energy in the return stroke stage of the piston are converted into driving force of other components or the piston is decelerated through the energy recycling oil way.
Description
technical field [0001] The invention relates to the technical field of rock drills, in particular to a hydraulic rock drill for energy recovery and utilization. Background technique [0002] The rock drill is a tool used to directly mine stones. It drills holes in the rock formations so that explosives can be put into the rocks to blast the rocks, thereby completing the mining of stones or other stone works. The hydraulic rock drill is powered by high-pressure hydraulic oil, drives the impact piston to reciprocate at high speed and high frequency, and impacts the drill rod to transfer energy to the drill bit, so that the drill bit breaks the rock and realizes the function of rock drilling. Compared with traditional pneumatic rock drills, it has the advantages of low energy consumption, high efficiency, low noise, and fast rock drilling speed, and has been developed rapidly. [0003] The rock drill is mainly composed of an impact mechanism and a rotary mechanism. The impact...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): F15B21/14F15B1/02F15B15/22E21B6/00
CPCF15B21/14F15B1/02F15B15/222E21B6/00
Inventor 刘飞香廖金军易达云钱垂军徐震祝爽赵贵生胡及雨甘士瑜张坚蒋海华
Owner CHINA RAILWAY CONSTR HEAVY IND