CN210659904U

CN210659904U - Auxiliary operation device of handheld pneumatic rock drill

Info

Publication number: CN210659904U
Application number: CN201921427238.7U
Authority: CN
Inventors: 张永春; 李敦全; 刚永才; 陈国平; 骆建明; 刘丽; 唐凯
Original assignee: Sinohydro Bureau 5 Co Ltd
Current assignee: Sinohydro Bureau 5 Co Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-06-02
Anticipated expiration: 2029-08-30

Abstract

The utility model discloses a hand-held pneumatic rock drill auxiliary operation device, wherein an H-shaped track is arranged on a trolley, a trolley is arranged on the track, and a rock drill is arranged on the trolley; a traction motor is installed at the tail end of the track, the output of the traction motor is decelerated by a speed reducer to drive a steel rope, a traction trolley is driven to move forwards and backwards, a rotary cylinder is installed on a working valve of the rock drill and can drive the working valve of the rock drill to rotate +/-90 degrees, the rock drill is started to impact and rotate for drilling during forward rotation, the rotary cylinder rotates reversely to clear holes, air flow is started to clear broken stone chips in the holes, and the possibility of blocking drill rods is reduced. Adopt the utility model discloses afterwards, operating personnel only need aim at the drilling position with the rock drill drilling rod and start, has reduced intensity of labour, and an operator can watch on two to three sets of rock drills on the same construction platform truck simultaneously, improves work efficiency.

Description

Auxiliary operation device of handheld pneumatic rock drill

Technical Field

The utility model relates to a drilling operation field, especially a hand-held type pneumatic rock drill auxiliary operation device.

Background

The hand-held pneumatic rock drill is commonly called hand-air drill, is a drilling tool taking compressed air as power, is widely used for engineering construction drilling operation, and can be directly called as the rock drill for short. The engineering trolley is convenient to move and lift, when a tunnel is drilled, the engineering trolley is matched with the handheld pneumatic rock drill to drill, the engineering trolley lifts the hand-operated pneumatic drill and an operator of the hand-operated pneumatic drill to a drilling position, then the operator performs drilling operation, each handheld pneumatic rock drill needs two persons to perform cooperative operation, the operator bears loads such as weight, torque, propelling force and vibration of the rock drill, the manual labor intensity is high, and the number of operators is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a handheld pneumatic rock drill auxiliary operation device is provided, under the operation condition of construction trolley assistance drilling, reduces handheld pneumatic rock drill operation intensity of labour, reduces operating personnel quantity in order to save construction cost.

In order to solve the technical problem, the utility model discloses a technical scheme is: a hand-held pneumatic rock drill auxiliary operation device comprises a drill bit, a rod protector, a drill rod, a rock drill, a trolley traction motor and an H-shaped track; the H-shaped track is fixed on the operation trolley, the trolley is arranged in the H-shaped track groove, a front pulley of the trolley is arranged in front of the trolley, and a rear pulley of the trolley is arranged behind the trolley;

the steel rope drives the trolley to move back and forth along the H-shaped track through the trolley front pulley; the rope tightener is arranged, the rope tightener body is a lead screw with adjustable length, one end of the rope tightener is connected to a fixed point at the front end of the steel rope, and the other end of the rope tightener is connected with the steel rope;

the fixing and driving part of the steel rope is sequentially a steel rope front end fixing point, a rope tightener, a steel rope clamp, a trolley front pulley, a fixed pulley, a steel rope driving wheel set and a trolley rear pulley and is finally connected to a steel rope rear end fixing point;

the traction motor drives the speed reducer, and the speed reducer drives the steel rope driving wheel set to rotate so as to drive the steel rope and the trolley to move;

the rock drill is arranged on the trolley, a drill rod is arranged on the rock drill and is parallel to the central line of the H-shaped track, a drill bit is arranged in front of the drill rod, and a rod protector is arranged in front of the H-shaped track; a rotary cylinder is mounted on a working valve of the rock drill and used for driving the working valve of the rock drill.

Furthermore, the rod protector consists of a lower half hoop, a plastic ring, an upper half hoop and a bolt; the lower half hoop is fastened at the front end of the H-shaped track, the upper half hoop is fixed on the lower half hoop through two bolts, a pair of plastic rings consisting of an upper half hoop and a lower half hoop are tightly embraced between the two half hoops, the circle center heights of the half hoops and the plastic rings are consistent with the center height of the drill rod, and the center hole of the plastic ring is slightly larger than the diameter of the drill rod.

The trolley consists of a trolley front wheel, a front wheel fixing piece, a trolley front plate, a side plate front bolt, a side plate, a slide block bolt, a trolley walking rear wheel, a side plate rear bolt, a trolley rear plate, a rear wheel fixing piece, a front steel rope hole and a rear steel rope hole; the front part of the trolley is provided with a trolley front pulley, and the rear part of the trolley is provided with a trolley rear pulley; the front wheels of the trolley are divided into a left wheel and a right wheel, the rear wheels are divided into a left wheel and a right wheel, and the four travelling wheels are internally provided with bearings and are respectively positioned at two sides of the H-shaped rail longitudinal partition;

the front wheel fixing piece is used for fixing the front wheel on the front plate, and the rear wheel fixing piece is used for fixing the rear wheel on the rear plate; the front and rear plates of the trolley are connected into a whole by the side plates through the front bolt and the rear bolt, the inner sides of the side plates are respectively provided with a sliding block, the sliding blocks are fixed on the side plates through the sliding block bolts, the inner sides of the two sliding blocks are tightly attached to the longitudinal partition of the H-shaped track, and the upper surfaces of the sliding blocks are tightly attached to the upper groove surface in the H-shaped track; the front and rear plates of the trolley are provided with a front steel rope hole and a rear steel rope hole, and a steel rope running from the fixed pulley to the steel rope driving wheel set passes through the holes.

Compared with the prior art, the beneficial effects of the utility model are that: the operating personnel only need aim at the drilling position with the rock drill drilling rod and start, has reduced intensity of labour, and two to three sets of rock drills on the same construction platform truck can be watched on simultaneously to an operator, improves work efficiency.

Drawings

Fig. 1 is a schematic view of the overall structure.

Fig. 2 is an axial view of the guard.

Fig. 3 is a left side view of the cart.

Figure 4 is a cart axis view.

Fig. 5 is a left side view of the drive device.

Fig. 6 is an exploded view of the drive device in an axial view.

Fig. 7 is a schematic diagram of a control circuit.

Fig. 8 is a schematic of steel cord routing.

Fig. 9 is a control circuit schematic.

Fig. 10 is a rear view of a rotary cylinder connection.

Fig. 11 is a side view of a rotary cylinder connection.

In the figure: a drill bit 1; a rod guard 2; a drill rod 3; a fixed pulley 4; a steel rope front end fixing point 5; a rope tensioner 6; a steel rope clamp 7; a steel cord 8; a trolley front pulley 9; a rock drill 10; a trolley 11; a rotary cylinder 12; a trolley rear pulley 13; steel rope rear end fixing point 14; a steel rope driving wheel set 15; a speed reducer 16; a traction motor 17; an H-shaped rail 18; a lower half hoop 201; a plastic ring 202; an upper half hoop 203; a bolt 204; a front wheel 1101 of the car; a front wheel mount 1102; a front car panel 1103; side plate front bolts 1104; side plates 1105; a slider 1106; slider bolts 1107; a cart rear wheel 1108; side plate rear bolts 1109; a cart back plate 1110; a rear wheel mount 1111; front rope holes 1112; rear rope holes 1113; a cylinder block 1201; a first air interface 1202; a second air port 1203; a cylinder turntable 1204; a turntable connector 1205; a connector slot 1206; a stem 1207; a connector 1208; a return spring 1209; a rock drill valve handle 1007; a rock drill valve shaft 1008; a bottom plate 1501; a support frame 1502; a cover plate 1503; a driven wheel upper bearing housing 1504; a driven wheel upper bearing 1505; a reducer connecting post 1506; a bearing block 1507 on the driving wheel; drive wheel upper bearings 1508; a driven wheel upper bearing housing 1509; driven wheel lower bearings 1510; a drive wheel lower bearing seat 1511; a drive wheel lower bearing 1512; a driven wheel 1513; a drive pulley 1514; a gas supply end 1901; a gas supply pipe 1902; a gas source processing triplet 1903; a traction control valve 1904; a pneumatic motor 1905; a forward limit valve 1906; a back limit valve 1907; a rock drill control valve 1908; a rotary cylinder 1909;

in the drawings, all devices are uniformly numbered, a device with one or two-bit number is a first-level component, a four-bit number is a subcomponent, the lowest two bits are a child number, and the parent component number of the component is higher than the child number, for example: 1106 indicates that the part is a sub-part of the trolley 11, 203 indicates that the device is a sub-part of the pole guard numbered 2, and 19xx indicates that the device is a part for pneumatic control.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the length of the whole auxiliary working device of the rock drilling machine is far longer than the width and the height, and in order to ensure higher definition, the breaking symbol using the broken line omits the same part of the middle continuation, and the whole device consists of the following components: the device comprises a drill bit 1, a rod protector 2, a drill rod 3, a fixed pulley 4, a steel rope front end fixing point 5, a rope tightener 6, a steel rope clamp 7, a steel rope 8, a trolley front pulley 9, a rock drill 10, a trolley 11, a rotary cylinder 12, a trolley rear pulley 13, a steel rope rear end fixing point 14, a steel rope driving wheel set 15, a speed reducer 16, a traction motor 17, an H-shaped track 18, a forward limit valve 1906 and a backward limit valve 1907.

The H-shaped track 18 is fixed on the operation trolley, the trolley 11 is arranged in a groove of the H-shaped track 18, a trolley front pulley 9 is arranged in front of the trolley 11, a trolley rear pulley 13 is arranged behind the trolley 11, the steel rope 8 drives the trolley 11 to move back and forth along the H-shaped track 18 through a traction wheel, the main body of the rope tightener 6 is a lead screw with adjustable length, one end of the rope tightener 6 is connected with a steel rope front end fixing point 5, the other end of the rope tightener 6 is connected with the steel rope 8, the tension degree of the steel rope 8 is adjusted through adjusting the length, the fixing and driving parts of the steel rope 8 are the front end fixing point 5, the rope tightener 6, the steel rope clamp 7, the trolley front pulley 9, a front reverse fixed pulley 4, a steel rope driving wheel set 15, the trolley rear pulley 13 and finally connected to a steel rope rear end fixing point 14, the traction motor 17 drives a speed reducer 16, the speed reducer 16, the steel rope driving wheel set 15 is driven to rotate, and the steel rope 8 and the trolley 11 are driven to move.

The rock drill 10 is arranged on the trolley 11 and moves forwards or backwards along with the trolley 11 synchronously, the rock drill 10 is provided with a drill rod 3, the drill rod 3 is parallel to the center line of the track 18, a drill bit 1 is arranged in front of the drill rod 3, and a rod protector 2 is arranged in front of the H-shaped track 18 to prevent the overlong drill rod 3 from swinging in the operation process; a rotary cylinder 12 is mounted on a working valve of the rock drill 10 and used for driving the working valve of the rock drill 10, the working valve of the rock drill 10 rotates forwards, a valve handle moves forwards, the rock drill 10 works in a drilling mode, and when the working valve handle of the rock drill 10 rotates backwards and backwards, the rock drill 10 works in a hole cleaning mode. When the traction motor 17 rotates forwards, the speed reducer 16 and the steel rope driving wheel set 15 synchronously rotate forwards, the steel rope 8 on the side of the trolley rear pulley 13 is loosened, meanwhile, the steel rope driving wheel set 15 tightens the steel rope 8 on the side of the trolley front pulley 9 through the backward fixed pulley 4 at the front end of the H-shaped track 8, and the front and rear traction wheels of the trolley 11, the rock drill 10 and the drill bit 1 of the drill rod 3 advance together; when the traction motor 17 rotates reversely, the speed reducer 16 and the steel rope driving wheel set 15 synchronously rotate reversely, the steel rope 8 on the side of the trolley rear pulley 13 is tightened up by the steel rope driving wheel set 15, meanwhile, the steel rope 8 on the side of the reverse fixed pulley 4 and the trolley front pulley 9 is loosened, and the front and rear traction wheels of the trolley, the trolley 11, the rock drill 10 and the drill bit 1 retreat together.

As shown in fig. 2, the rod protector 2 is composed of a lower half hoop 201, a plastic ring 202, an upper half hoop 203 and bolts 204, the lower half hoop 201 is fastened at the front end of the H-shaped rail 18, the upper half hoop 203 is fixed on the lower half hoop 201 through two bolts, the plastic ring 202 composed of a pair of upper and lower half rings is tightly held between the upper and lower half hoops, the height of the circle center of the hoop and the plastic ring 202 is consistent with the height of the center of the drill rod 3, the center hole of the plastic ring 202 is slightly larger than the diameter of the drill rod 3, the drill rod 3 can freely rotate at the center of the plastic ring 202 without swinging up and down and left and right, when in use, the drill rod 3 is firstly installed, and then the plastic ring.

As shown in fig. 3 and 4, the cart 11 is composed of a cart front wheel 1101, a front wheel fixing member 1102, a cart front plate 1103, a side plate front bolt 1104, a side plate 1105, a slider 1106, a slider bolt 1107, a cart rear wheel 1108, a side plate rear bolt 1109, a cart rear plate 1110, a rear wheel fixing member 1111, a front wire rope hole 1112, and a rear wire rope hole 1113, and has a cart front pulley 9 at the front and a cart rear pulley 13 at the rear. The front wheel 1101 of the trolley is divided into a left wheel and a right wheel, the rear wheel 1108 of the trolley is also divided into a left wheel and a right wheel, bearings are arranged in the four travelling wheels, wheel shafts are only used for fixing without rotating along the wheels and are respectively positioned at two sides of a longitudinal partition of an H-shaped track 18 and walk along an inner groove of the H-shaped track 18 without falling off, the front wheel fixing piece 1102 is used for fixing the front wheel on a front plate 1103 of the trolley, the rear wheel fixing piece 1111 is used for fixing the rear wheel 1108 on a rear plate 1110 of the trolley, the front wheel fixing piece and the rear wheel fixing piece are of a holding structure, the wheel shafts are held on the front plate and the rear plate of the trolley by the fixing pieces, when the fixing pieces are loosened, the distance between the front wheel and the longitudinal partition of the H-shaped track 18 can be adjusted, notches are arranged below the front plate and the rear plate, the tracks are arranged in the notches below the front plate 1103 of the trolley and the rear plate 1110 of the trolley, the front, the sliding blocks 1106 are fixed on the side plates 1105 through sliding block bolts 1107, the inner sides of the two sliding blocks 1106 are tightly attached to the longitudinal partition of the H-shaped track 18, the upper surfaces of the sliding blocks 1106 are tightly attached to the upper groove surface in the H-shaped track 18, so that the trolley 11 does not swing or turn on one side on the H-shaped track 18, the sliding block bolts 1109 are installed in a sunk manner, bolt heads are sunk into the sliding blocks 1106, and the sliding block bolts 1107 are prevented from being rubbed with the longitudinal partition of the H-shaped track 18; the front and rear plates of the car are provided with a front cable hole 1112 and a rear cable hole 1113 through which a cable 8 running from the fixed sheave 4 to the cable driving wheel set 15 passes. Two sides of the main body of the rock drill 10 are arranged on the gaps above the front plate and the rear plate through bolts. The trolley 11 is pulled by the trolley front pulley 9 to move forwards and is pulled by the trolley rear pulley 13 to move backwards.

As shown in fig. 5 and 6, the driving device includes a traction motor 17, a speed reducer 16 and a cable driving wheel set 15, the entire driving device is installed at the rear portion of the H-shaped rail 18, the traction motor 17 is a bidirectional rotating motor, the traction motor 17 rotates to drive the speed reducer 16 to operate, and power is transmitted to the cable driving wheel set 15 after the speed is reduced by the speed reducer 16 and torque is increased. The cable driving wheel set 15 comprises a bottom plate 1501, a support frame 1502, a cover plate 1503, a driven wheel upper bearing seat 1504, a driven wheel upper bearing 1505, a speed reducer connecting column 1506, a driving wheel upper bearing seat 1507, a driving wheel upper bearing 1508, a driven wheel lower bearing seat 1509, a driven wheel lower bearing 1510, a driving wheel lower bearing seat 1511, a driving wheel lower bearing 1512, a driven wheel 1513 and a driving wheel 1514. The driving wheel is divided into a driving wheel 1514 and a driven wheel 1513, a plurality of steel rope grooves are formed in the driving wheel 1514 and the driven wheel 1513, the steel ropes 8 are sequentially wound between the wheel grooves of the driving wheel 1514 and the driven wheel 1513 back and forth for a plurality of times, the friction area between the steel ropes 8 and the driving wheel is increased, friction force is increased to prevent the steel ropes 8 from slipping on the driving wheel, only half circle of each wheel is wound by the steel ropes 8 between the driving wheel 1514 and the driven wheel 1513 every time, the steel ropes 8 stably cross the wheel grooves by utilizing the space between the two driving wheels, and when the driving wheel rotates, the steel ropes 8 rotate, stack and extrude and move axially. The two ends of the driving wheel are provided with bearings (1505, 1508, 1510 and 1512), each bearing is provided with a French rail type bearing seat (1504, 1507, 1509 and 1511), and the bearing seats are fixed on the cover plate 1503 and the bottom plate 1501 through bolts and play a role of fixedly supporting the two driving wheels and enabling the two driving wheels to rotate freely. The reducer 16 is mounted on the connecting column and transmits rotational power to the drive pulley 1514.

As shown in fig. 7, the control air path is composed of an air source processing triple piece 1903, a traction control valve 1904 (Y2C), an air motor 1905, a forward limit valve 1906, a backward limit valve 1907, a rock drill control valve 1908 (Y1C) and a rotary air cylinder 1909, the air supply end 1901 is from an air compressor which supplies working compressed air to the rock drill 10, the compressed air is connected to an air inlet pipeline of the rock drill 10 from an air supply pipe 1902, the compressed air for the operation of the rock drill 10 is supplied, the compressed air is connected from an air supply end 1901 access point, after pressure reduction, water removal and oil mist lubrication processing is performed by the air source processing triple piece 1903 (a pressure reducing valve, an oil-water separator and an oil mist device), one path is sent to an air inlet P of the traction control valve 1904, the traction control valve 1904 is a middle blocking three-position five-way valve which is divided into three parts of a forward coil Y2A, a reverse coil Y2B and an air path part Y2C (Y2A and Y2B are in the circuit diagram), a two air output port of the traction control valve 1904 is connected, when the valve core is in the middle stop position, the air inlet flow at the position P is stopped by the valve core, simultaneously, the valve core stops the output ports A and B respectively, the air inlet and exhaust pipe air flows of the pneumatic motor 1905 cannot flow freely, the pneumatic motor 1905 is in an air flow rotation stopping state, the pneumatic motor 1905 plays a braking role, when the traction control valve 1904 is driven by a forward coil Y2A, the air flow P flows into the traction control valve 1904 and flows to an air inlet of the pneumatic motor 1905 from the point A, flows into a port B of the traction control valve 1904 from an exhaust port and is exhausted from the port S, the compressed air flow forms a passage, the pneumatic motor 1905 rotates forward, the trolley 11 and the rock drill 10 are driven to advance, when the valve core of the traction control valve 1904 is driven by a reverse coil Y2B, the air flow flows into the traction control valve 1904 through the point P, flows to an exhaust port B of the pneumatic motor 1905 from the point B, flows to the port A of the traction control valve, the compressed air flow forms a reverse path and the air motor 1905 rotates in reverse, driving the carriage 11 and the rock drill 10 to retract. A forward limit valve 1906 is connected in a port passage of a traction control valve 1904A, when the rock drill 10 advances to a limit position, the forward limit valve 1906 is triggered, compressed air driven in a forward direction is decompressed by the forward limit valve 1906, a pneumatic motor 1905 stops rotating in the forward direction, a backward limit valve 1907 connected in a port passage of the traction control valve 1904B is triggered, when the rock drill 10 retreats to the limit position, the backward limit valve 1907 is triggered, compressed air driven in a backward direction is decompressed by the backward limit valve 1907, the pneumatic motor 1905 stops rotating and stops retracting, the other output air of an air source processing triple 1903 is connected with a rotary cylinder 1909 through a rock drill control valve 1908, the rotary cylinder 1909 has a rotation stroke of plus or minus 90 degrees, the rock drill control valve 1908 is divided into three parts of a forward coil Y1A, a reverse coil Y1B and a gas passage Y1C (Y1A and Y1B are in a circuit diagram), the rock drill control valve 1908 is a medium-relief three-position five-way valve, when the valve core is in a middle stop position, the air inlet flow at the position P is stopped by the valve core, meanwhile, the valve core connects the output ports A and B with the atmosphere, the rotary cylinder 1909 is in a pressure relief state, the rotary disc 1204 can freely rotate along with external force, the position of the rotary disc of the cylinder is determined by the external force, the rotary disc 1204 is pulled back to the middle position by a reset spring 1209 (see figure 10), the rock drill 10 is in a stop state, when the rock drill control valve 1908 is driven by a forward coil Y1A, air flow flows into the rock drill control valve 1908 through the position P, flows to the air inlet of the rotary cylinder 1909 from the point A, flows back to the port B of the rock drill control valve 1908 from the exhaust port, and is discharged through the port S, the rotary cylinder 1909 rotates forward by 90 degrees, drives the rock drill working valve 1908 to a; when the jack machine control valve 1908 is driven by the reversing coil Y1B, the air flow flows into the jack machine control valve 1908 through P and flows from point B to the exhaust port of the rotary cylinder, then flows back to port a of the jack machine control valve 1908 and is discharged through port R, the compressed air flow forms a reverse path, and the rotary cylinder 1909 rotates in reverse direction by 90 degrees, so that the working valve of the jack machine 10 rotates in reverse direction to the hole cleaning position. The exhaust ports R, S of the traction control valve 1904 and the rock drill control valve 1908 may be connected to silencers to reduce operating noise.

Fig. 8 is a steel rope routing diagram, the steel rope clamp 7 fixes the front end of the steel rope 8 to the rope tightener 6, the rope tightener 6 is fixed on the fixing point 5 at the front end of the steel rope, after the steel rope 8 passes around the front pulley 9 of the trolley, the direction is changed on the front pulley 9 of the trolley, the front pulley 4 is wound around the front fixed pulley, the direction is continuously changed on the fixed pulley 4, the front steel rope hole 1112 on the front plate of the trolley and the rear steel rope hole 1113 on the rear plate 1110 of the trolley pass through the left side of the first steel rope groove of the driven wheel 1513, the first steel rope groove of the driving wheel 1514 is redirected around a half turn to enter the right side of the second steel rope groove of the driven wheel 1513, after the second steel rope groove of the driven wheel 1513 is changed into a half-turn direction, the second steel rope groove enters the left side of the second steel rope groove of the driving wheel 1514, and then enters the right side of the third steel rope groove of the driven wheel after being wound for a half-turn at the second steel rope groove of the driving wheel 1514, passes through the right side of the driven wheel 1513 after being repeatedly wound for multiple turns, reaches the trolley rear pulley 13, is wound for a half-turn at the trolley rear pulley 13 and then is connected to the rear end fixing point 14 of the steel rope. When the driving wheel 1514 rotates anticlockwise to rotate forwards in a forward rotation mode, clockwise rotation is in a reverse rotation backward direction, when the driving wheel 1514 rotates anticlockwise, a steel rope at the front end of the trolley is wound into the steel rope driving wheel set 15 from the left side of the driving wheel 1514 and is sent out from the right side of the steel rope driving wheel set 15, backward tension is generated on the steel rope 8 on the left side, the tension is redirected through the fixed pulley 4, the front pulley 9 of the trolley is pulled forwards, meanwhile, the steel rope 8 on the right side of the steel rope driving wheel set 15 is loosened, the steel rope on the rear portion of the trolley is lengthened, the trolley is pulled by the steel rope on the left side to move forwards, when the driving wheel rotates.

As shown in the control circuit schematic diagram of fig. 9, the control circuit is composed of a fuse FU1, an anti-reverse diode D1, a three-position switch S1, a filter capacitor C1, a voltage reduction element U1, a decoupling capacitor C2, a double timing module MD1, a rock drill control valve 1908 coil Y1A and Y1B, a non-return diode D2, a traction control valve 1904 coil Y2A and Y2B. The control circuit has little electricity consumption, only tens of milliamperes of maximum working current, can be provided by the trolley 24V storage battery, or it is provided with 24V storage battery to supply power additionally, +24V is connected to the positive pole of the storage battery, GND is connected with the negative pole of the storage battery, the protective tube FU1 is connected in series in the main power supply loop, when the circuit is damaged, it can prevent short circuit from burning out the circuit, the main power supply loop is also connected with the anti-reverse connection diode D1, when the storage battery is connected, it can prevent the device from burning out by connecting the wrong positive pole and negative pole, the filter capacitor C1 is used for filtering the interference signal introduced by the power line, the decoupling capacitor is used for eliminating the high-frequency interference signal in the circuit, the voltage-reducing device U1 reduces and stabilizes the direct current 24 into 12V for the double-timing module to use, it can use W78196 linear voltage-stabilizing integrated block, it can also use LM2596 switch type voltage-reducing and voltage-stabilizing, the timing time of T1 and T2 can be independently set and memorized, wherein the COM port and the NO port of the relay inside the relay are connected and disconnected with the NC port in the timing time period of T1, and the COM port and the NC port of the relay inside the relay are connected and disconnected with the NO in the timing time period of T2.

The rock drill control valve 1908 is a middle-relief three-position five-way electromagnetic valve which is divided into three parts (Y1C is in a gas circuit diagram) including a forward air supply coil Y1A, a reverse air supply coil Y1B and an air circuit execution mechanism Y1C, when two coils are not powered, a valve core relieves pressure of two outlets to enable driven pneumatic components such as an air cylinder to move freely, the traction control valve 1904 is a middle-relief three-position five-way electromagnetic valve which is divided into three parts (Y2C is in the gas circuit diagram) including a forward air supply coil Y2A, a reverse air supply coil Y2B and an air circuit execution mechanism Y2C, when two coils are not powered, the valve core cuts off two output gas circuits to block an air flow channel, and the pneumatic components such as a motor driven by the valve are in a braking state. When S1 is at 2 position of working state, the circuit supplies power to MD1 through FU1, D1, S1 and U1, MD1 starts to enter into cycle timing working state, its internal contact COM and NO are connected in T1 time, 24V power supply supplies power to Y1A and Y2A through COM and NO in turn, after traction control valve 1904 advances coil Y2A to be electrified, the traction electromagnetic valve provides positive rotation air flow to pneumatic motor to make the trolley 11 and rock drill 10 advance, at the same time, rock drill 10 controls electromagnetic valve Y1A to be electrified to output positive air flow to rotary cylinder 1909 to make the rock drill working valve at drilling position, and rock drill 10 starts to drill and impact. In the time period of T2, COM and NC are connected and NO is disconnected, 24V supplies power to Y1B through COM and NC, a rock drill control valve 1908 outputs reverse airflow to a rotary cylinder 1909, the rotary cylinder 1909 rotates a rock drill working valve to a hole cleaning position, a rock drill 10 blows hole cleaning airflow into a drill rod 3, meanwhile, the NC also supplies power to Y2B through a check diode D2, a traction control valve 1904 outputs reverse airflow to a traction motor 17, the traction motor 17 rotates reversely, the trolley 11 and the rock drill 10 move backwards, the airflow can blow out broken stone chips in holes conveniently, the time of T1 is far longer than that of T2, the forward traction time is longer than that of backward traction, and the trolley 11 and the rock drill 10 are in a forward trend in the whole working time period.

When drilling is finished and S1 is converted to a retreating position 1, the power supply voltage reducing element U1 and the double timing module MD1 are powered off, the double timing module stops working, COM and NC are kept connected but no power supply current exists, a 24V power supply supplies power to Y2B through the end 1 of S1, the traction control valve 1904 outputs reverse airflow to the pneumatic traction motor, the traction motor 17 rotates reversely, the trolley 11 and the rock drill 10 retreat, the drill rod 3 is withdrawn for next drilling operation, the non-return diode enables current not to flow to the end Y1B, and control errors caused by the fact that power is supplied to U1 and MD1 through NC and COM are prevented. When S1 is switched to the middle 0 position, the U1, the MD1 and the electromagnetic valve are completely powered off, the valve core of the traction control valve 1904 is added to the middle position to stop output airflow, the traction motor 17 is in a braking state, the valve core of the rock drill control valve 1908 returns to the middle position, the output air passage is depressurized, the rotary cylinder 1909 is pulled back to the middle position by the return spring 1209, and the rock drill 10 stops working.

Fig. 10 is a schematic diagram of connection of a working valve and a rotary cylinder of a rock drilling machine, a cylinder body 1201, a first air port 1202, a second air port 1203, an air cylinder turntable 1204, a turntable connector 1205, a connector slot 1206, a rock drilling machine valve handle 1007, a rock drilling machine valve shaft 1008 and a return spring 1209, wherein the rock drilling machine valve handle 1007 and the rock drilling machine valve shaft 1008 are parts of the rock drilling machine itself; the cylinder body 1201, the first air interface 1202, the second air interface 1203, the cylinder rotary table 1204, as the part of the rotary cylinder 1909 itself, the rotary cylinder 1909 cylinder body is fixed on the trolley 11, the rotary table connector 1205 connected to the rotary table, the rotary table connector 1205 is opened with the connecting slot, the rock drill valve handle 1007 is blocked in the connecting slot, make the rock drill valve handle 1007 rotate plus or minus 90 degrees along with the adapter and the cylinder rotary table 1204, the rotary cylinder rotary table 1204 and the connector are equipped with the multi-ring reset spring 1209 outside, when the control valve supplies air to the first air interface 1202, the rotary cylinder 1204 rotates 90 degrees positively, the rock drill working valve core is driven to the drilling working position by the rotary cylinder 1909, when the control valve supplies air to the second air interface 1203, the rotary cylinder 1909 rotates 90 degrees reversely, the rock drill working valve core is driven to the clearing hole position by the rotary cylinder, when both air interfaces AB have no air supply and are in the open pressure relief state, the cylinder carousel 1204, the connectors and the rock drill work valves are pulled back to the intermediate stop position by a return spring 1209 and the rock drill 10 stops working.

Claims

1. A hand-held pneumatic rock drill auxiliary operation device is characterized by comprising a drill bit (1), a rod protector (2), a drill rod (3), a rock drill (10), a trolley (11), a traction motor (17) and an H-shaped track (18); the H-shaped track (18) is fixed on the operation trolley, the trolley (11) is installed in a groove of the H-shaped track (18), a front trolley pulley (9) is installed in front of the trolley (11), and a rear trolley pulley (13) is installed behind the trolley (11);

the steel rope (8) drives the trolley (11) to move back and forth along the H-shaped track (18) through the trolley front pulley (9); the rope tightening device (6) is arranged, the main body of the rope tightening device (6) is a lead screw with adjustable length, one end of the rope tightening device (6) is connected to a fixed point (5) at the front end of the steel rope, and the other end of the rope tightening device is connected with the steel rope (8);

the fixing and driving parts of the steel rope (8) are a steel rope front end fixing point (5), a rope tightener (6), a steel rope clamp (7), a trolley front pulley (9), a fixed pulley (4), a steel rope driving wheel set (15) and a trolley rear pulley (13) in sequence, and are finally connected to a steel rope rear end fixing point (14);

the traction motor (17) drives the speed reducer (16), and the speed reducer (16) drives the steel rope driving wheel set (15) to rotate so as to drive the steel rope (8) and the trolley (11) to move;

the rock drill (10) is mounted on the trolley (11), a drill rod (3) is mounted on the rock drill (10), the drill rod (3) is parallel to the center line of the H-shaped track (18), a drill bit (1) is mounted in front of the drill rod (3), and a rod protector (2) is mounted in front of the H-shaped track (18); a rotary cylinder (12) is mounted on the working valve of the rock drilling machine (10) for driving the working valve of the rock drilling machine (10).

2. A hand-held pneumatic rock drill auxiliary working device according to claim 1, characterized in that the rod guard (2) consists of a lower half hoop (201), a plastic ring (202), an upper half hoop (203), a bolt (204); the lower half hoop (201) is fastened at the front end of the H-shaped track (18), the upper half hoop (203) is fixed on the lower half hoop (201) through two bolts (204), a pair of plastic rings (202) consisting of upper and lower half rings are tightly embraced between the two half hoops, the height of the circle centers of the half hoops and the plastic rings (202) is consistent with the height of the center of the drill rod (3), and the center hole of the plastic ring (202) is slightly larger than the diameter of the drill rod (3).

3. The auxiliary working device of the hand-held pneumatic rock drill according to claim 1, characterized in that the trolley (11) is composed of a trolley front wheel (1101), a front wheel fixing member (1102), a trolley front plate (1103), a side plate front bolt (1104), a side plate (1105), a slider (1106), a slider bolt (1107), a trolley rear wheel (1108), a side plate rear bolt (1109), a trolley rear plate (1110), a rear wheel fixing member (1111), a front steel wire hole (1112), and a rear steel wire hole (1113); the front part of the trolley (11) is provided with a front trolley pulley (9), and the rear part is provided with a rear trolley pulley (13); the front wheels (1101) of the trolley are divided into a left part and a right part, the rear wheels (1108) of the trolley are divided into a left part and a right part, and the four travelling wheels are internally provided with bearings and are respectively positioned at two sides of the longitudinal partition of the H-shaped track (18);

the front wheel fixing piece (1102) fixes the front wheel on the front plate (1103) of the trolley, and the rear wheel fixing piece (1111) is used for fixing the rear wheel (1108) on the rear plate (1110) of the trolley; the side plate (1105) connects the front and rear plates of the trolley into a whole through a front bolt (1104) of the side plate and a rear bolt (1109) of the side plate, the inner sides of the side plate (1105) are respectively provided with a sliding block (1106), the sliding blocks (1106) are fixed on the side plate (1105) through sliding block bolts (1107), the inner sides of the two sliding blocks are tightly attached to the longitudinal partition of the H-shaped track (18), and the upper surface of the sliding block (1106) is tightly attached to the inner upper groove surface of the H-shaped track (18; the front and rear plates of the trolley are provided with a front steel rope hole (1112) and a rear steel rope hole (1113), and a steel rope (8) running from the fixed pulley (4) to the steel rope driving wheel set (15) passes through the holes.