Working principle of nlb-800 internal combustion bolt wrench

Structure and working principle

1. Structure composition:

1) Fuel tank: store fuel;

2) Engine: output power and connect with crankshaft through clutch;

3) Reduction gearbox: the gear reduces speed and transmits torque;

4) Impact box: working part, preparation before function with rated torque:

2. Working principle:

The engine power is transmitted from the passive disc to the reduction gearbox. After the gear is decelerated, the energy is transmitted to the sleeve through the impact body, and the sleeve head loosens or tightens the sleeper bolts.

Safe operation

4.1 safety precautions:

If used properly, this machine will be an easy to master special tool for public works; It may be dangerous if it is not used correctly or without appropriate precautions. In order to ensure safe use, please strictly abide by various rules of this manual:

4.11 during operation, it is forbidden to wear neckties, bracelets or other decorations that may be entangled by the engine. 3.11 check the bolted connections of equipment and ensure they are tight;

4.12 there shall be no bystanders or animals in the working area during starting the machine or working;

4.13 stop the engine during the transportation or transfer of the machine;

4.14 before each use, check whether the fasteners of the machine are loose and handle them properly;

4.15 do not use damaged machines for operation.

4.16 except for routine maintenance, do not disassemble or repair the machine at will;

4.17 the exhaust gas from gasoline engine contains carbon monoxide, so avoid inhalation. Never use it in a closed video room or in a place with poor ventilation;

4.18 it is strictly prohibited to accelerate and stop the machine so as not to damage the machine.

4.2 preparations before startup

4.21 refueling:

Use 93# and above gasoline and special oil for two-stroke gasoline engine. The volume mixing ratio of gasoline and engine oil shall be: (25 ~ 30): 1. Shake the engine oil and gasoline in the mixing bottle before filling; When refueling, pay attention not to let dirt enter the oil tank; Do not store the mixed oil in the mailbox for a long time.

Warning:

4.211 it is forbidden to use pure gasoline as fuel;

4.212 refuel in a well ventilated place, and stop the machine when refuelling;

4.213 when refueling, fireworks are strictly prohibited;

4.214 the oil tank shall not be filled too full, and the oil tank cover shall be tightened after refueling;

4.215 if fuel spills or splashes, it must be removed and volatilized before starting the gasoline engine

4.22 inspection:

4.221 stand the machine upright and check whether the lubricating oil of the reduction gearbox is sufficient;

4.222 check whether the connector is loose;

4.223 check whether there is too much carbon deposition on the spark plug and whether the clearance meets the requirements;

4.224 check whether the air filter is dirty and blocked;

4.225 check whether the specification of the sleeve meets the nut to be tightened.

Warning: it is forbidden to run the engine without air filter, otherwise the engine wear will be accelerated.

4.23 start gasoline engine:

4.231 move the reversing hand wheel to the middle position, open the fuel switch and turn the choke to the closed position; In case of heat engine or high temperature, the choke shall be fully opened.

Warning: when the gasoline engine is shut down and the hot engine is started, the muffler is a high-temperature component. Avoid contacting the muffler components to avoid scalding;

4.232 turn the throttle to 1 / 2 or 1 / 3 position;

4.233 first gently pull the starting rope several times, and then quickly pull the starting rope to start the engine.

Note: do not let the starting rope retract automatically. Pull the starter handle to return it slowly to prevent damage to the starter.

4.234 after starting the engine, slowly place the choke in the fully open position;

4.235 check whether the reversing handwheel is in the middle position.

4.236 after cold start, the engine shall run at low speed for 3 ~ 5 minutes before operation.

Note: within 24 hours of the new gasoline engine at the beginning of Z, the throttle must be half open for light load operation in order to better run in.

4.24 shutdown:

In case of emergency shutdown, press the stop switch immediately and keep it for 3 ~ 5 seconds. Under normal circumstances, the following steps shall be taken:

1) Slowly loosen the throttle handle and let the gasoline engine run at low speed for 3 ~ 5 minutes;

2) Press the stop switch;

3) When the work is finished, turn off the fuel switch.

4.25 operation

Start the internal combustion engine, idle for 3 ~ 5 minutes, preheat, and adjust the engine to reach the rated speed before operation. When loosening the nut, turn the reversing hand wheel to the right end, align the sleeve with the nut and drop decisively. When the nut is close to falling off, lift the wrench; If the loosened nut is too tight and the clutch cannot be loosened for 3 times, lift the handle in time and deal with it in other ways.

When tightening the nut, turn the reversing hand wheel to the other side. After the clutch jumps for 3 times, it indicates that the tightened bolt has reached the rated torque. Lift the machine in time and tighten the next bolt.

The reversing handle can only be adjusted at idle speed, not at acceleration. Avoid high-speed no-load operation and overspeed operation.