Cactus Grab (rock Grab).docx 4pc1h

HZ-6A type grab rock machine 's manual HZ6-00SM Xuzhou Hanyuan Mine Mountain Science and Technology Xuzhou Han Yuan Mining Equipment ,Ltd.

HLM HONGDA LIANSHAO MINING D.O.O. BOR

Xuzhou Hanyuan Mining

HZ-6A type rock grab

Technology Co., Ltd.

machine manual

HZ6-00sM 29 pages in total

page 2

Table of Contents 1. Machine use

2

2. Technical specification

2

3. Machine construction and working principle 4 4. Machine installation and operation

7

5. The lubrication of the machine

9

6. Machine maintenance and overhaul

9

7. Common faults and handling

10

8. Attached figure

12




machine manual


page 2

1. The use of the machine The purpose of rock grabbing the machine is mainly to grasp the loose rock after blasting in the shaft. Stones and minerals are placed in the drum and can be used to grab loose material on the ground. The rock grabber is used for wells up to 4m in diameter, and the rock blocks are not more than 500mm.The power of this machine is compressed air, so that it can work in the mine. Each rock grab machine has a spare grabber. Each uses a grab and 2


several other spare parts. 2. Technical specification 2.1 Overview 2.1.1 Machine frame rotation angle: >360°; 2.1.2 Grab rock capacity: 50-60m3/h; 2.l. 3 compression air working pressure: 0.5-0, 7MPa; 2.1.4 Compressed air and air consumption: 22m3/min; 2.1.5 frame external dimensions (length X width): 920X 820mm; (total height): hanging plate Above part: 2050mm; Lower part of the hanging plate: 5050mm; Base (mounted on the hanging plate) size (length X width): 1400X1170mm; 2.1.6 Machine total weight: 8145Kg. (including a 0.6r grab 2477Kg) 2.2 Grab 2.2.1 Volume: 0,6m3; 2.2.2 Cylinder diameter: 600mm; 2.2.3 live stroke: 575mm; 2.2.4 grabs: 8 pieces; 2.2.5 Grab the sheet to open the largest diameter: 2330mm; 2.2.6 Grasping piece Closed Maximum diameter: 1750mm; 2.2.7 compression air working pressure: 0.5-0.7MPa; 2.2.8 Maximum external dimensions (closed state): φ 1750X2500mm;

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machine manual


page 4

2.2.9 Weight: 2477Kg. 2.3 Lifting reducer 2.3.1 Lifting capacity (including grab): 3500Kg; 2.3.2 Lifting speed: 0.2-0.4m/s; 2.3.3 Reel capacity: 70m; 2.3.4 steel wire rope diameter: 15.5mm; 2.3.5 gas Motor 2.3.5.1 power rate: 25HP; 2.3.5, 2 speed: 600-800r/min; 2.3, 5.3 working pressure: 0,5-0.7Mh; 2.3.5.4 Inlet duct diameter: 50.8mm; 2.4 rotary reducer 2.4.1 Rotation speed (ie the frame rotation speed) 3-4r/min; 2.4.2 gas Motor 2.4.2.1 power rate: 8.5HP; 2.4.2.2 Speed: 800r/min; 2.4.2.3 Working pressure: 0.5-0.7Mh; 2.4.2.4 Inlet duct diameter: 25.4mm; 2.5 Variable amplitude mechanism 2.5.1 Cylinder diameter: 600mm; 2.5.2 Cylinder stroke: 620mm; 4


2.5.3 Pressure increase oil cylinder diameter: 150mm; 2.5.4 Increased pressure cylinder stroke: 620mm; 2.5.5 Pushing force oil cylinder diameter: 100mm (two); 2.5.6 Push force cylinder stroke: 700mm; 2.5.7 Push force of each push cylinder (when the wind pressure is 0,5MPa): about 6280Kgf; (When the wind pressure is 0.7MPa): about 8792Kgf;




machine manual


page 5

2.5.8 Variable amplitude Average speed: 0.2-0, 4m/s. 3. Machine construction and working principle 3.1 Machine construction The rock grab consists of the following components: 3.1.1 lift reducer 3.1.2 return mechanism 3.1.3 million ts 3,1.4 back to reducer 3.1.5 frame 3.1.6 buffer mechanism 3.1.7 variable amplitude mechanism 3.1.8 machine Repair station 3.1.9 division Machine room 5


3.1.10 protection cover 3, 1.11 Climb ladder 3.1.12 Arms Rod 3.1.13 Grab 3.2 Working principle The rock grab has four main working systems (Figure 1): 3.2.1 Grab the lifting and lowering system; This system has 25 horsepower pneumatic machine, lifting reducer reel, brake, suspension.The device is composed of a steel wire rope and a 25-horsepower pneumatic air intake pipe. One end of the steel wire rope set on the arm, the other end byes the movable pulley 11 and the fixed pulley 13 of the coupling grab, The rear arm is up, and is fixed to the reel by two fixed pulleys 14, 15, and finally. When the 25-horsepower pneumatic machine is running (forward or reverse), drive the reducer to drive the reel Swing (forward or reverse) for grab lift and descent. The brake works with the pneumatic machine to brake the valve when the pneumatic machine is switched on.

6





machine manual


page 7

The cylinder is turned on at the same time, the compressed air enters the brake cylinder, and the piston moves to make the brake The belt is loosened and the brake wheel is free to rotate. Conversely, when the pneumatic machine stops rotating, the brake Brake with tension by spring tension to ensure that the grab can be stopped at any height Do not move. 3.2.2 back to work system (Figure 2) 8.5 horsepower pneumatic machine, worm gear reducer, universal t, pinion and back Rotating frame and other components. The base of the slewing mechanism is fastened to the two steel beams of the sling The swivel t is connected to the frame and extends downhole, in a suspended state, B, 5 hp pneumatic The worm gear reducer is fastened to the frame when the 8.5 hp pneumatic machine is running. (forward or reverse), drive the worm gear reducer through the universal t, drive and rotary machine a pinion that engages the inner ring on the base so that the pinion is on the inner ring The turn revolves along the inner ring gear, which drives the main frame, the arm, the grab, etc. The center of the frame rotates and the angle of rotation is greater than 360°. 3.2.3 variable working system (Figure 3) By the variable amplitude cylinder, the booster cylinder, the two thrust cylinders, the boom, the 7


high pressure oil pipe And so on. The variable amplitude cylinder is integrated with the booster cylinder, and a piston rod is used in common. A large piston and a small piston are mounted on the upper and lower ends of the rod, and a gas valve is mounted on the top of the cylinder. One. When the cylinder is ventilated, the small piston moves down at the same time because the piston area is not Similarly, when the air pressure in the cylinder is 0.5MP, the oil pressure in the booster cylinder can be increased to 8 MPa. The high pressure oil enters the two thrust cylinders through the high pressure hose. Thrust cylinder end Hinged on the frame, the other end is hinged to the boom, due to the piston movement of the thrust cylinder. The boom is raised and the valve is used to ensure that the boom can be stopped at any position. When the valve is opened, the arm stalk is lowered by its own weight. The above-mentioned boom is raised or lowered, that is, The radial movement of the grab in the wellbore is achieved. The lower part of the cylinder is equipped with a buffer valve, when the large piston moves down to the lower cylinder head about 70MM. When the large piston pushes the buffer valve stem down, the air outlet below the cylinder is closed, making it large The gas in the lower part of the piston is pressurized, and the large piston descends slowly, reducing the large piston and the lower cylinder head. The impact between them protects the large piston and the lower cylinder head.

8





machine manual


page 9

3.2.4 Grab grabbing and unloading work system Grab the steel wire rope suspended from the top of the boom, and the grab valve is mounted on the frame. Above the driver's cab, the grab consists of 8 grabs, 8 drawbars, connecting plates, cylinder pistons Structure and suspension mechanism. Grab the intake pipe and the rack outlet pipe, grab control. Direct control of the valve: When the bucket is working, the control valve can be used to control the valve to catch the grab. The sheet is opened or closed for picking or unloading. The above four main working systems consist of two operating valves installed in the driver's cab. The driver is controlled by the driver through the piping system (refer to the attached drawings). Each action It can be single or linked. The rock grab machine has a driver's cab to shorten the distance between the driver and the work surface. The room is installed in the lower part of the rack, equipped with driver's seat, control valve, barometer and so on. Control valve In front of the driver, one on each side, to reduce clutter, less space, the engine room 4 9


The column is built into a cavity and welded tightly to replace the duct. Driver's room floor spot welding On the frame, if the duct at the bottom of the bottom plate is to be repaired (in general, it will not be repaired), The bottom plate can be removed. See the figure below for the operation of the control valve.

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machine manual


page 11

In addition, in the pneumatic system, to keep the compressed air clean and lubricated The machine is equipped with a gas filter and an oil mister. (installation on site) In order to ensure that the rock grab can be arbitrarily rotated during operation, in the pneumatic system, there is a back Adapter, mounted on the top of the machine to drain water from the compressed air, under the machine. There are two drain valves on the top of the engine room (the engine room) should be drained at the beginning and end of each shift. 4. Machine installation and operation 4.1 machine preparation before going down the shaft. 4.1.1 Machines Before going down the shaft, a thorough inspection should be carried out. Bolted t, rope clamp, whether there are loose or cracked welds, etc…, should be completely repaired. Otherwise not allowed to go down the shaft. 4.1.2 All pipelines should be blown off with a pressure blower before going down the shaft, and 11


the inlet and outlet ports will be block it to avoid getting dirty. 4.1.3 Before machine go dwon the shaft, the missing parts, damaged parts, etc. must be replaced, and the exposed snails the pattern needs to be protected. 4.2 Downhole installation program 4.2.1 Underground installation of the rock Grab machine main machine, after the preparation work is completed, it will catch The bucket is separated from the main unit and is separated from the well. When the main engine goes down, the two I-beams from the hanging plate Through the main beam (the distance between the two main beams should be designed in advance when deg the hanging plate) When the base of the main engine slewing mechanism is about to the main beam, turn the base 90°. Then lower the main unit, seat it on the two main beams, and fasten it with an L-shaped (or Ushaped) bolt solid. In order to prevent the rocking machine from working, the rotation of the base can be rotated, and the four corners of the base can be welded. Upper stop (refer to Figure 5). 4.2.2 Grab the Grab After the main unit is installed, lower the grab and connect the air duct (no debris is allowed) and steel wire rope. The air duct connector is not allowed to leak air, and the rope card must be tightened to ensure safety.

12





machine manual


page 13

4.3 Downhole test operation 4.3.1 Add oil to the oil hole, oil cup and gear box everywhere before the test. (Refer to Figure 2 and 6). See Figure 7 for the fueling method of the booster cylinder. 4.3.2 Check all fasteners and piping systems of the machine before the test. If there is any looseness, then test it. 4.3.3 Before the test, first open the main valve and check if there is any leakage at the pipe t. Gas phenomenon. 4.3.4 Open the hook of the control valve handle and perform 3-5 cycles of no-load operation. Action, re-check whether the operation of the machine is normal, and then do heavy load test Test. 4.4 Notes 4.4.1 Before the formal work, remove the floating rafts and debris on the machine, then empty The car runs and waits for the machine to work properly. 4.4, 2 drivers must be trained in operation and grasp the operating technology before they can

13


operate Machine, do not cross operation before the operation technology is not very skilled, to security All. 4.4.3 When the machine leaves the machine, the hook of the control valve must be placed on the handle In order to prevent accidents. 4.4.4 If the parts are found to be worn, deformed seriously or the fasteners are loose At that time, the work should be stopped immediately, repaired or replaced with new parts, to be repaired. After that, you can continue to use it. 4.4.5 Before oiling, each oil cup and oil hole must be refueled before driving turn. 4.4.6 Always keep the machine clean and complete. 4.4.7 Steel Wire ropes shall be inspected regularly and must comply with the safety regulations.




machine manual


page 14

5. Lubrication of the machine 5.1 and sufficient lubrication to ensure the normal operation and long service life of the machine Necessary measures. Therefore, the required fueling and inspection time must be well-positioned. Check and refueling work. 5.2 For the sake of unification, all wind motives, gearboxes, oil misters, etc. They are all lubricated with No. 20 oil or turbine oil, and all rolling bearings (refer to Figure 8) are used. Calcium base grease (yellow oil) is lubricated, and all control valves, valve valves, cylinders, etc. should be assembled. 14


Suitable oil or butter to help lubricate. 5.3 Lubricating oil must meet the requirements. Must not be mixed with dust and debris And other debris with corrosion. 5.4 Grab the connecting plate and 8 tie rod connecting pins, all should be refueled regularly. 6. machine maintenance and overhaul Regular regular maintenance is an effective measure to ensure the safe operation of the machine. Special attention should be paid to the application, especially the suspension. 6.1 Steel wire rope should be checked frequently, and it is found that broken wire, loose strands, indentation, etc. should be immediately replace. 6.2 racks, booms, sheave , coupling bolts, etc., should be checked frequently Is there any crack in the weld, whether the machine is deformed, and whether the bolt is loose or not. If found Solved in time. 6.3 The pneumatic system should be kept tight and there is no air leakage; the filter should be cleaned regularly. Wash, once a week, the oil mister should always be refueled to maintain normal dripping. The maintenance of other components shall be carried out according to the specific conditions and production arrangements. Rational, but in principle, can not make the machine work sick. 6.4 When repairing the machine, fasten the seat belt (-supplied). Upper inspection station When it is not allowed to jump from the height to the inspection platform. When overhauling the machine, no more than one on the stage People are not allowed to place objects weighing more than 50Kg. 15





machine manual


page 16

7 often see faults and treatments (see Table 1) Table 1 Common faults and handling Malfunction

the reason

Clearing method

Oiler does not drip

Excessive viscosity of

Replace the right lubricant

Or dripping slow

lubricating oil Tubing filter is blocked

Cleaning tubing and filter, protect Oil-cleaning

Grab

Grab cannot

The small air pipe that

Finishing the air tube, repairing

work

be closed

is connected to the air

or repairing

is

or

valve is

Change the small pressure pipe

not

Slow closing

Fold or rupture

working

Control the grab

Repair five-position six-way

properly

control valve failure

valve

Grab valve valve spool

Repair or replace the valve plug

stuck

and spring

Grab

16


Piston rod

Overhaul the piston rod and

deformation, rubber

replace the seal

seal Damage. Overhaul

ring

the piston rod and replace the seal Grab the tip and wear Re-weld the tip, repair and

Tie

it, catch it

grasp

Slice deformation

sheet

rod Insufficient

deformation,

strength Re-weld to increase strength

and poor weld quality

open welding Lifting

Lift

Insufficient pressure

Increase air pressure

mechanism

or

Gas line leaking

Check the pipeline, repair or

is not

Slower

working

lifting

properly.

replace Wire rope grooving or Rewinding wire rope reel wire Rope winding, stuck Air motor and gearbox

Add

lubricant,

remove

the

Insufficient oil, no

ground inspection

sound

Repair, change the steel sleeve

Normal, slow speed, steel sleeve damaged badly by Rub 17


Brake has not been

Loosen the brake band and

opened, brake belt

repair the brake

Too tight The guide sheave does Inspection rope wheel not rotate




machine manual

malfunction


the reason

Clearing method Repair brake

page 18

Lifting

Lift brake

Brake failure

mechanism

failure

The brake belt is seriously Replacement brake belt

Unusual operation

worn Lifting wire

Suspension

grab

rotator Replace the rotator bearing

rope twisted

bearing damage

and inspect it

Twist

Bad, the rotor fails

Rotator

Universal t pin cutting

Replacement pin

The slewing mechanism can't The internal gear is stuck by Cleaning the internal gear move

stones

Or turning slowly

Air pressure leaking,

Repair

insufficient pressure

increase the pressure

Lubrication of air motor and

Add lubricant, remove the

reducer Insufficient oil,

ground inspection

the

pipeline

and

18


abnormal sound, speed

Repair, change copper sleeve

Degree slowdown, pneumatic motor copper sleeve grinding Serious damage Leakage and leakage of

Check the pipeline, repair or

The shifting mechanism

piping system

replace

cannot be extended,

Pressurized cylinder, cylinder

Replace the seal

Can't close

seal damage Supercharged

cylinder

oil Oil

with little or no oil Valve valve failure

Overhaul valve

Driver's control valve fails

Inspection control valve

Thrust

cylinder

seal

is Replacement control valve

damaged

19




HZ6-00sM


machine manual

28 pages in total

page 20

8. Attachment Figure 1: in heart return Rotary rock grab--------------------------------------------13 Figure 2: return turn work System and its lubrication------------------------------14 Figure 3: Variable amplitude work System--------------------------------------------15 Figure 4: Control system------------------------------------------------------------------16 Figure 5: Grab plane in the plane layout of the wellbore--------------------------17 Figure 6: Lifting the reducer and its lubrication parts-------------------------------18 Figure7: Pressure increase oil cylinder oil injection----------------------------------19 Figure8:Transmission system-------------------------------------------------------------20

20




HZ6-00sM


machine manual

28 pages in total

page 22

21


1. Blunt 2. Lift reducer 3. Revolving body 4. Universal coupling 5. Slewing reducer 6. Buffer device 7. Luffing mechanism 8. Booster cylinder 9. Shelf 10. driver's room 11. Suspension device 12. Cactus Grab 13. Sliding wheel 1 14. Sliding wheel 2 15. Sliding wheel 3



HZ6-00sM 22



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28 pages in total

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HZ6-00sM


machine manual

28 pages in total

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28 pages in total

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HZ6-00sM


machine manual

28 pages in total

page 26

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HZ6-00sM


machine manual

28 pages in total

page 27

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HZ6-00sM


machine manual

28 pages in total

page 28

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HZ6-00sM


machine manual

28 pages in total

page 28

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