CN-224229707-U - Rock drill oil mist control system

Abstract

The utility model discloses an oil mist quantity control system of a rock drill, which comprises a lubricating oil pot, an electromagnetic lubricating oil pump and an adjustable throttle valve, wherein the lubricating oil pot is connected with the input end of the electromagnetic lubricating oil pump through a first oil way, the output end of the electromagnetic lubricating oil pump is provided with a second oil way for connecting the rock drill, a third oil way is arranged between the second oil way and the lubricating oil pot, and the adjustable throttle valve is arranged on the third oil way. The utility model is applied to the field of tunnel construction, can provide lubricating oil for the rock drill in a small quantity and multiple times, not only ensures the continuity of lubricating oil access of the rock drill and avoids the dry grinding and acceleration loss of parts in the rock drill, but also can avoid the problem of overlarge lubricating oil quantity in a short time, effectively prevents spider veins from generating and prolongs the service life of a drill shank.

Inventors

• GONG JUN
• SONG ZUYUAN
• Liao Xiangyong
• GAO YANG
• ZHANG LIN

Assignees

• 湖南五新隧道智能装备股份有限公司

Dates

Publication Date

20260512

Application Date

20250617

Claims (10)

1. 1. The oil mist amount control system of the rock drill is characterized by comprising a lubricating oil pot, an electromagnetic lubricating oil pump and an adjustable throttle valve; The lubricating oil pot is connected with the input end of the electromagnetic lubricating oil pump through a first oil way, and the output end of the electromagnetic lubricating oil pump is provided with a second oil way for connecting a rock drill; And a third oil way is arranged between the second oil way and the lubricating oil pot, and the adjustable throttle valve is arranged on the third oil way.
2. 2. The rock drill oil mist amount control system according to claim 1, characterized in that a flow sensor is provided on the second oil passage, and the flow sensor is located downstream of a junction of the third oil passage on the second oil passage.
3. 3. The rock drill oil mist amount control system according to claim 1, characterized in that the lubrication oil pot is located above the electromagnetic lubrication oil pump so that lubrication oil flows into the electromagnetic lubrication oil pump under the action of gravity.
4. 4. The oil mist amount control system of a rock drill according to claim 1, characterized in that the lubricating oil pot is provided with a liquid level sensor therein.
5. 5. The rock drill oil mist amount control system according to claim 1, characterized in that an inlet of the third oil passage on the lubricating oil pot is higher than a maximum height of an oil level of the lubricating oil pot.
6. 6. The oil mist amount control system of a rock drill according to any one of claims 1 to 5, characterized in that the adjustable throttle valve comprises a valve body and a valve core, wherein both ends of the valve body are respectively provided with an oil inlet and an oil outlet, and a runner which is communicated with the oil inlet and the oil outlet is arranged in the valve body; The valve core is positioned at the side part of the valve body, the first end of the valve core is positioned in the flow channel, and the second end of the valve core is provided with a driving piece for driving the valve core to displace and changing the sectional area of the flow channel.
7. 7. The oil mist amount control system of a rock drill according to claim 6, characterized in that a first protrusion and a second protrusion are arranged on the inner wall of the valve body, and a conical damping hole is formed between the first protrusion and the second protrusion; the first end of the valve core is of a conical structure matched with the damping hole, and the first end of the valve core is positioned in the damping hole.
8. 8. A rock drill oil mist amount control system according to any one of the claims 1 to 5, characterized in that a first check valve is provided on the first oil passage at a position close to the input end of the electromagnetic lubrication pump.
9. 9. The oil mist amount control system of a rock drill according to any one of claims 1 to 5, characterized in that a second check valve is provided at a position on the second oil passage near the output end of the electromagnetic lubrication pump.
10. 10. The oil mist amount control system of a rock drill according to any one of claims 1 to 5, characterized in that the electromagnetic lubrication pump and the adjustable throttle valve are provided with a plurality of groups in combination for controlling the oil mist amounts of a plurality of rock drills.

Description

Rock drill oil mist control system Technical Field The utility model relates to the technical field of tunnel construction, in particular to an oil mist control system of a rock drill. Background In tunnel or mine supporting engineering, the hydraulic rock drill, an important part of the trolley, is equipped with its own lubrication system, and the amount of lubrication oil is provided by the oil mist system of the main machine. The amount of lubrication required by different hydraulic rock drills is different, for example one drill has a lubrication oil amount of 3cc/min and the other has a lubrication oil amount of 0.6cc/min. In the impact process of the rock drill, if the quantity of lubricating oil is too small, insufficient lubrication can cause dry grinding and acceleration loss of internal parts, and if the quantity of lubricating oil is too large, spider veins appear on the contact surface of an impact piston and a drill shank, and the life of the drill shank can be greatly reduced by the spider veins. The spider veins are formed by the mechanism that the impact of the rock drill is that the impact piston repeatedly strikes the drill shank, when the oil quantity is proper, the oil is uniformly sprayed to the contact surface of the impact piston and the drill shank under the action of gas, if the oil quantity is too much, accumulation is formed at the center part, when the impact is carried out, the two end surfaces strike the accumulated oil under the action of the extremely large force, the oil spreads around, and the impact is carried out for many times, so that veins similar to a spider web are formed at the center on the end surfaces. At present, due to the technical limitation, the electromagnetic lubricating oil pump with smaller oil output is lacking in the market, and the general model is that 0.2cc of lubricating oil is pumped at one time. If the requirement of 0.6cc/min of the rock drill is to be met, pumping is only needed 3 times a minute, namely once every 15 seconds, but this can lead to a lubrication discontinuity, and the situation that the amount of lubrication oil is too large for a period of time and too little for a period of time occurs. Disclosure of utility model Aiming at the defects in the prior art, the utility model provides the oil mist quantity control system of the rock drill, which can provide lubricating oil for a small quantity and multiple times according to the lubricating oil quantity requirement of the rock drill, and can avoid the problem of overlarge lubricating oil quantity in a short time while ensuring the continuity of lubricating oil access of the rock drill. In order to achieve the above object, the present utility model provides an oil mist amount control system for a rock drill, comprising a lubrication oil pot, an electromagnetic lubrication oil pump and an adjustable throttle valve; The lubricating oil pot is connected with the input end of the electromagnetic lubricating oil pump through a first oil way, and the output end of the electromagnetic lubricating oil pump is provided with a second oil way for connecting a rock drill; And a third oil way is arranged between the second oil way and the lubricating oil pot, and the adjustable throttle valve is arranged on the third oil way. In one embodiment, a flow sensor is disposed on the second oil path, and the flow sensor is located downstream of a connection of the third oil path on the second oil path. In one embodiment, the lubricating oil sump is located above the electromagnetic lubricating oil pump so that lubricating oil flows into the electromagnetic lubricating oil pump under the force of gravity. In one embodiment, the lubricating oil can is provided with a liquid level sensor. In one embodiment, the inlet of the third oil path on the lubricating oil can is higher than the maximum height of the oil level of the lubricating oil can. In one embodiment, the adjustable throttle valve comprises a valve body and a valve core, wherein an oil inlet and an oil outlet are respectively arranged at two ends of the valve body, and a runner which is communicated with the oil inlet and the oil outlet is arranged in the valve body; The valve core is positioned at the side part of the valve body, the first end of the valve core is positioned in the flow channel, and the second end of the valve core is provided with a driving piece for driving the valve core to displace and changing the sectional area of the flow channel. In one embodiment, a first protrusion and a second protrusion are arranged on the inner wall of the valve body, and a conical damping hole is formed between the first protrusion and the second protrusion in a surrounding manner; the first end of the valve core is of a conical structure matched with the damping hole, and the first end of the valve core is positioned in the damping hole. In one embodiment, a first check valve is disposed on the first oil path at a position close to the input end