Effective management of the warehouse equipment fleet is impossible without accurate accounting of the work life of each unit of equipment. Business owners and mechanics often face the need to do the right thing. clockTo determine the actual output, plan maintenance, or calculate the residual value of the asset on sale. Errors in these calculations can lead to untimely oil replacement, premature failure of expensive units or financial losses in the implementation of equipment.
Unlike cars, where the main indicator is mileage, for forklift and front loaders key parameter is the time of operation of the engine or electric motor under load. Understanding how this indicator is formed and how it differs from astronomical time is critical for competent exploitation. In this article we will analyze all the nuances of accounting of working time of special equipment, from simple formulas to the features of electronic systems.
It is worth noting that the calculation methods can vary significantly depending on the type of engine and the year of production of the machine. If on old diesel models a mechanical meter is used, then modern diesel models are used. electric-loader They are equipped with complex controllers that take into account many parameters. To understand these differences is necessary for everyone who wants to ensure a long service life of their equipment and avoid sudden downtime.
The concept of the motor clock and its difference from astronomical time
A motor hour is a unit of measurement of the duration of an engine, which is equivalent to one hour of operation in nominal mode. The main difficulty is that one-motion It is not always equal to one real-time astronomical hour. This difference is due to the fact that the engine can operate at different speeds and with different loads, which directly affects the wear of its components.
When the power unit is idling or at minimal loads, the wear of parts occurs more slowly than when working at full power. That is why special time for real-time conversion in the motor watches are used. ratio. For diesel engines, which are most often installed on heavy machinery, this coefficient is usually 1.2-1.3, which means accelerated wear compared to the reference mode.
⚠️ Attention: Using an average factor of 1.0 for a diesel loader operating in intensive mode will lead to an understatement of the real wear of the engine by 20-30%, which is fraught with oil starvation and overhaul.
In the case of electrical equipment, the situation is different. This does not include fuel combustion, but charging-discharge cycles. battery and the operating time of the traction motor. Electronics itself calculates the equivalent of a motor clock based on current consumption, but accounting often requires that data be translated into standard time units.
Calculation formulas for different types of engines
Exactly. clockIt is necessary to know the type of engine installed and its operation modes. For gasoline and gas internal combustion engines, the calculation is relatively simple, as they operate in a more stable range of revolutions compared to diesel engines. In most cases, a coefficient close to one is applied to them, but with minor adjustments depending on the intensity of the work.
For diesel units, which are the heart of most warehouse and construction trucks, the formula becomes more complicated. It is important to take into account that such engines often operate in frequent start-up and stop modes, as well as under high load when lifting loads. Calculation of the motor clock in this case requires multiplying the actual working time by a correction factor, which can range from 1.2 to 1.5.
Electrical forklifts, such as popular models Toyota, Still or JungheinrichThey use a different logic. Their on-board computers can display the operating time in hours, but the actual battery life output is measured in cycles. For the transfer to the watch often use a ratio where 1 hour of work is equal to 1 hour, but adjusted for the depth of the battery.
Keep a log of operating modes: if the truck is 80% of the time with the engine running (waiting for loading), use a reduction factor to more accurately calculate the oil life.
Below is a table showing the approximate conversion rates for different types of equipment depending on the operating conditions. This data will help you navigate when planning for the service.
| Type of engine | Mode of work | Conversion factor | Note |
|---|---|---|---|
| Gas/Petrol/Gas | Standard. | 1.0 - 1.1 | Uniform loading |
| Diesel | Intense | 1.3 - 1.5 | Frequent climbs, off-road |
| Diesel | Lightweight | 1.1 - 1.2 | Smooth floor, rare downloads |
| Electrical. | Replaceable | 1.0 | According to the controller. |
Mechanical and electronic meters: where to look at readings
The definition of the current production of equipment directly depends on the type of installed meter. On old techniques and simple models still meet mechanical clock-counters. They are a drum with numbers, which is driven by gears associated with a crankshaft or generator. Such devices are reliable but do not work when the engine is turned off and may have an error at low revs.
Modern forklifts are equipped with electronic instrument panels. Here, the workflow data is stored in memory. flight-computer (ECU). To access this data, you often need to log into the service menu. For example, in technology. Toyota or TCM This is done via a combination of buttons on the control panel or by using a diagnostic laptop connected via a port. OBD-II or a specific manufacturer's connector.
It is important to distinguish between engine operating hours (Engine Hours) and operating hours of the hydraulics or the entire apparatus. Some advanced systems such as CAT Vision or Komatsu KomtraxThis allows you to track these parameters separately. This gives a more accurate picture: the engine could run idling until the hydraulics were used, which is important for assessing the wear of the pump group.
How to log into the service menu without a laptop?
On many models (for example, Nissan, Mitsubishi) you need to press the combination of buttons on the remote (often "C" and the arrow up) simultaneously with the rotation of the ignition key. Look for the exact combination in the manual of a particular model, as it is unique to each brand.
⚠️ Note: When reading reading from an electronic counter, do not reset data unnecessarily. The history of the watch is a legal document in case of warranty cases and the sale of equipment.
Transfer of motor watches into kilometers and liters of fuel
Often there is a need to convert the work into other units of measurement, for example, for comparison with automotive equipment or calculation of fuel consumption. Transfer of the watch to kilometers is a conditional process, since the forklift can work in one place. However, for an approximate estimate, the average speed of movement is used. It is considered that 1 motor hour of work of the forklift is approximately equal to 10-15 km of run of the passenger car under the conditions of wear.
More accurate is the calculation through fuel consumption. Known. rate of flow The engine per hour (L/h) can easily calculate the required amount of fuel to change. For example, if a diesel loader consumes 2.5 liters per hour, then for an 8-hour shift it will need 20 liters of diesel. A deviation from this norm may signal a fuel system malfunction or a change in the driver's driving style.
For electric forklifts, the equivalent of fuel consumption is electricity consumption in kWh. Knowing the battery capacity and the average discharge current, you can calculate the number of charging cycles. This is important for charging station planning and degradation assessment Li-Ion Or lead-acid batteries.
☑️ Checking of consumables by motor clock
Planning of maintenance by motor clock
The main purpose of accurate counting of the motor clock is timely maintenance (TO). Manufacturers of equipment, such as Lindef, Hyster or DoosanRegulate the intervals of replacement of oils and filters in the motor clock, and not in calendar months. Ignoring these norms leads to accelerated wear of rubbing pairs and a decrease in compression.
The first maintenance, often called "run-in", is carried out after the first 50-100 hours of motorized operation. During this period, the details are grinded, and the maximum amount of metal shavings accumulates in the oil. Subsequent intervals may be 250, 500, 1000 or more hours depending on the quality of the lubricants used and the operating conditions.
It is important to keep a log of accounting, where the date, the meter readings and the work performed are recorded. This allows you to track the dynamics of oil consumption and notice the carbon monoxide in time, which may indicate problems with the piston group. Modern telematics systems can transmit this data automatically, making life easier for mechanics.
Compliance with maintenance intervals calculated by the motor watch increases the life of the forklift engine by 30-40% and retains the manufacturer's warranty obligations.
Common mistakes in accounting for working hours
One of the most common mistakes is to ignore the engine’s idling time. Operators often leave machinery running during breaks or long loading and unloading operations when the forklift itself is not moving. The mechanical meter at this time may not rotate (if it is associated with a transmission) or spin slowly, while the engine is experiencing a load and consumes a resource.
Another mistake is the incorrect interpretation of the readings of electronic meters after replacing nodes. If the motor clock counter of the frame was not reset or correctly transferred when replacing the engine, confusion arises. The database may indicate that the TO has already passed, although the new unit requires maintenance, or vice versa - the frame resource is considered exhausted ahead of time.
Seasonal factors are often overlooked. In winter, at low temperatures, the engine warms up longer and operates in harsher conditions. During this period resource-expenditure The intervals between oil replacements should be reduced by 15-20%, even if the time has not yet come out.
⚠️ Warning: Never try to twist a mechanical meter or interfere with the memory of an electronic unit before selling. An experienced mechanic can easily determine the discrepancy between the state of the nodes (grid production, exhaust color) and the declared figures.
Effect of operating conditions on wear of equipment
The conditions in which the forklift works directly affect the rate of accumulation of motorcycle watches. Work in cold-chambers (art.storage) requires more frequent oil replacement and the use of special hydraulic fluids at low temperatures. In such conditions, 1 motor hour can be equated to 1.5-2 hours of normal work due to thickening of lubricants and increased load on the starter and battery.
Work in dusty (cement plants, construction sites) requires special attention to air filters. If the filter is clogged, the engine begins to "suffocate", fuel consumption increases and power drops. In such conditions, the meter of the motor watch is standard, but the real wear of the cylinder-piston group is ahead of schedule.
Multiple changes of operators also make adjustments. Different driving styles, habit of "gas" or sharp braking affect the resource of the transmission and braking system. Monitoring of this is possible only with regular monitoring of performance indicators and comparing them with the actual state of the technology.
What to do if the counter is broken?
If the mechanical meter stopped spinning, and the electronic one shows an error, do not leave the equipment without taking into account. Keep a manual work log (time of start and end of shift), keep fuel checks. This data will help to approximately restore the history of work for accounting and mechanics.
Frequently Asked Questions (FAQ)
How to convert a watch into kilometers for a forklift?
There is no exact translation as the forklift can operate on site. However, for a rough assessment of the resource, the coefficient is often used: 1 motor hour ≈ 10-15 km of passenger car mileage. For electric forklifts, this parameter is not informative, it is better to focus on charging cycles.
How many hours does the engine oil need to be changed?
The standard interval for mineral oils is 250-500 hours, for semisynthetics - up to 1000 hours, for synthetics - up to 1500-2000 hours. The exact data is always given in the operating manual (Manual) a specific model of the forklift.
Why are electronic watches different from mechanical watches?
Mechanical meters are often given from the gearbox and do not take into account the operation of the engine at idling (if the transmission is turned off). Electronic reads the signal from the generator or ECU, fixing any time of the engine, so their readings are always higher and more accurately reflect real wear.
Can I reset my watch on the forklift?
Resetting the total operating meter (Total Hours) on modern machines is blocked by the manufacturer and requires expensive dealer equipment. Reset is possible only for the counter interval TO (Timer), which is reset after maintenance by the mechanic.
How often should I check the oil level during intensive work?
When working in one shift (8 hours), it is recommended to check the level of oil and coolant daily before starting work. When working in two or three shifts, the check should be carried out at least once every 24 hours.