The manufacturer supplies rock electric drill for coal mine

  Electric tools for rock drilling
That is, the motor drives the drill pipe and drill bit to rotate through the speed change mechanism, and pushes it manually or other mechanical ways to drill in soft rock
It is used to drill blast holes during rock roadway excavation, as well as bolt holes, water exploration holes, drainage holes and coal seam water injection holes
According to the propulsion mode, it can be divided into handheld and guide rail type
The hand-held rock electric drill is propelled by hand and is composed of motor, reducer, switch, etc
It is applicable to soft rock roadway with semi coal rock or rock uniaxial compressive strength less than 40MPa
The blast hole diameter is 35 ~ 42mm and the hole depth is less than 2m
The voltage is generally 127V and the power is 1
5KW
Its structural principle is similar to that of coal electric drill

The main machine of guide rail rock electric drill is installed on the guide rail, and the guide rail is fixed on the column during operation
There are three types of propulsion mechanisms: chain type, rack type and wire rope drum type
The working principle of chain type and rack type is basically the same
The advancing chain or rack is fixed on the guide rail
During propulsion, the sprocket (gear) is meshed with the chain (rack), and the drilling rig advances or retreats with the rotation of sprocket (gear)
Steel wire rope drum type: one end of the steel wire rope is fixed on the guide rail and the other end is fixed on the drum of the drilling rig
When the drilling rig is working, the drum winds the steel wire rope to pull the drilling rig forward
When it returns, it is pulled back manually

Structure and working principle
The rock electric drill is composed of motor, reducer and runway
The motor and reducer are integrated into a host and work on the runway through sprocket and chain

The motor is a three-phase AC squirrel cage self fan air-cooled asynchronous motor

The reduction gearbox has three output shafts, one of which drives the drill pipe to rotate, and the other is two symmetrical worm shafts
The main engine can move forward slowly on the runway through the single head * * worm gear system and double-sided friction clutch, and the main engine can quickly return on the runway through the double head right-handed worm gear system and double-sided friction clutch

Khyd rock electric drill (hereinafter referred to as rock electric drill) has the characteristics of reasonable structure, convenient movement, easy operation and reliability
It is suitable for drilling, water exploration and exploration in mines with (methane) or coal dust explosion risk
It can also be used for drilling in other mines or geotechnical engineering

Khyd rock electric drill has strong overload capacity, which can reduce partial sticking or penetration, and has high hole forming rate of gangue inclusion

  In order to prolong the service life of the drill bit and the working conditions of the operator, wet drilling, i
e
water powder discharge, is adopted
In the drilling operation, the electric drill can push and quickly withdraw the frame by itself only operating the hand wheel
Technical parameters:
According to the output power, there are four types (khyd40dia) 2kW, (khyd75dia) 3KW, (khyd140diab) 5
5kW, (khyd150diab) 7
5kW
The parameters of each type are compared as follows:

technical parameters	KHYD40dIA	KHYD75dIA	KHYD140dIAB	KHYD150dIAB
rated power kw	2	3	5 5	7 5
rated voltage V	127/380/660	380/660	380/660	380/660
rated frequency Hz	50	50	50	50
rated current a	4 5	6 8	11 6	15 4
rated speed r / min	2814	1420	1440	1440
number of motor phases	3	3	3	3
rated working system	continuous S1	continuous S1	continuous S1	continuous S1
insulation grade	F	F	F	F
rated rotation of spindle R / min	240	240	240	240
drilling diameter mm	Φ 42 (rock) Φ 45-60 (coal seam)	Φ 42 (rock) Φ 45-80 (coal seam)	Φ 42-Φ 80 (rock) Φ 80-Φ 100 (coal seam)	Φ 42-Φ 80 (rock) Φ 80-Φ 120 (coal seam)
drilling depth M	5m (rock) 20-60m (coal seam)	8m (rock) 30-80m (coal seam)	10m (rock) 30-80m (coal seam)	15 (rock) 40-100m (coal seam)
overall dimensions of the host (length & times; width & times; height) mm	570× 360× three hundred	720× 376× four hundred and thirty-six	1080× 460× five hundred and forty	1080× 460× five hundred and forty
drilling rig weight (excluding runway drill pipe, drill frame, etc ) kg	42	85	140	155
supporting cable	gb1170-74 (mining soft rubber sheathed cable) U type 3 * 41 * 4