GB/T 38893-2020 PDF English
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Industrial trucks - Safety monitoring system
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GB/T 38893-2020: PDF in English (GBT 38893-2020) GB/T 38893-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 53.060
J 83
Industrial trucks - Safety monitoring system
ISSUED ON: JUNE 02, 2020
IMPLEMENTED ON: DECEMBER 01, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 4
4 Composition of the monitoring system ... 6
5 Monitoring items ... 7
6 Requirements of monitoring system ... 9
7 Testing method ... 12
8 Inspection items ... 16
Industrial trucks - Safety monitoring system
1 Scope
This standard specifies the composition, content, requirements, inspection
methods and inspection items of the safety monitoring system for industrial
truck (hereinafter referred to as the "monitoring system").
This standard applies to counterbalanced forklifts, reach forklifts, side forklifts,
leg forklifts, pallet stackers, three-way stacker forklifts. Other types of industrial
trucks may use it as a reference.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB/T 6104.1 Industrial trucks - Terminology and classification - Part 1: Types
of industrial trucks
GB/T 10827.1 Industrial trucks – Safety requirements and verification -Part
1: Self-propelled industrial trucks (except for unmanned vehicles, telescopic
forklifts and trucks)
3 Terms and definitions
The terms and definitions as defined in GB/T 6104.1 and GB/T 10827.1 as well
as the following terms and definitions apply to this document.
3.1
Safety monitoring system
A system that monitors the working process of industrial trucks and can
record and manage operating parameters and status.
3.2
Information source
The maximum relative error between the measured value and the set value
of the monitoring system.
3.11
Remote monitoring center
A device whose remote server receives the information transmitted by the
remote information transfer unit, monitors and manages the information.
3.12
Working time
During the power-on of industrial trucks, the specific time corresponding to
each working state, which is the clock time (year / month / day / hour / minute
/ second) when recording a working state.
3.13
Blind area
When the industrial truck operator is located in the normal operating position,
the area which cannot be directly observed by his sight because it is blocked
by the truck or cargo.
Note: The blind area can be divided into front blind area and rear blind area.
4 Composition of the monitoring system
4.1 The monitoring system shall consist of hardware and software. Its functional
units shall include information collection unit, information processing unit,
control output unit, information storage unit, information display unit, information
output interface unit, etc.
Note: This monitoring system is an integral part of the electrical control system of
industrial trucks and is not an independent product.
4.2 The structure mode of the monitoring system shall be as shown in Figure 1.
6.3 Comprehensive error
Under actual operating conditions of industrial trucks, the comprehensive
system error shall not be greater than 10%.
6.4 Communication protocol requirements
6.4.1 The communication protocol of the system shall comply with the current
national standards.
6.4.2 The communication protocol related to safety monitoring parameters and
status shall be open to the outside world.
6.5 Recording and control functions
6.5.1 The monitoring system shall be configured with information collection
units according to Table 1.
6.5.2 The monitoring system shall have recording and traceability functions.
6.5.3 The monitoring system shall have a self-check function when it is turned
on.
6.5.4 When the monitoring system fails and such failure affects normal use, it
shall immediately send out an alarm signal.
6.5.5 The monitoring system of industrial trucks shall have warning and
reminding functions during operation.
6.5.6 When the monitoring system detects that the operator leaves the
operating position and the industrial truck is in a non-parking brake state, the
monitoring system shall issue an alarm.
6.5.7 When an industrial truck is equipped with a corresponding monitoring
device, the industrial truck shall have the following control functions and issue
warning messages:
a) When the monitoring system detects that the actual lifting capacity of the
industrial truck exceeds the rated lifting capacity, the system shall alarm;
b) For electric industrial trucks, the monitoring system shall limit the operating
speed of industrial trucks based on the detected lifting height;
c) For electric industrial trucks, when the monitoring system detects the
turning of the industrial truck, it shall be able to achieve automatic speed
reduction;
d) When the monitoring system detects that the operator leaves the
6.8 Display requirements
6.8.1 The monitoring system shall ensure that the displayed information is
clearly identifiable under the use environmental conditions of the truck.
6.8.2 The monitoring system shall have a real-time display function of the
operating status of industrial trucks; it can display the operating status and
operating parameters of industrial trucks in the form of graphics, images, charts
or text.
6.8.3 The text displayed by the monitoring system shall be in simplified Chinese.
6.9 Management authority requirements
6.9.1 The management personnel of the monitoring system shall be authorized.
6.9.2 The operators of industrial trucks shall have corresponding qualifications
and be authorized.
7 Testing method
7.1 Lifting weight
When the industrial truck is stationary, lift the test load. Select 60%, 70%, 100%
of the rated lifting capacity as the test load. During the test, check the lifting
capacity value recorded and displayed by the monitoring system in real time;
verify whether the comprehensive error meets the requirements.
7.2 Lifting height
The industrial truck carries out the lifting operation under no load. Select 20%,
50%, 80% of the maximum lifting height as the test lifting height. During the test,
check the lifting height value recorded and displayed by the monitoring system
in real time； verify whether the comprehensive error meets the requirements.
7.3 Tilt angle of mast
Tilt the mast to any position. Respectively select two different angle positions
for forward and backward tilting operations. During the test, check the mast tilt
angle as recorded and displayed in real time of the monitoring system; verify
whether the comprehensive error meets the requirements.
7.4 Running speed
Make the vehicle drive at a steady speed. Respectively select two different
running speeds to run forward and backward. During the test, check the running
speed values recorded and displayed by the monitoring system in real time;
information collection and incorrect information collection in turn. Check
whether the industrial truck will send out a reminder that the collection is
completed; whether the correct information collection and incorrect information
collection reminders are inconsistent.
7.12 Video device
Observe the front and rear blind area status of industrial trucks from the normal
operating position of the operator. Check whether the monitoring system
records the blind area’s video information in real time.
7.13 Lifting overload alarm
The industrial truck lifts 1.1 times the load of the rated lifting capacity. Check
whether the industrial truck issues an alarm.
7.14 Operation speed control during lifting
In the rated load state, the electric industrial truck is lifted to the lifting height
corresponding to the design speed limit; observe whether the maximum
operating speed of the industrial truck is restricted.
7.15 Turning speed limit control
In the no-load state, the electric industrial truck turns in the left and right
directions at the steering wheel angle corresponding to the design speed limit
value, to observe whether the industrial truck can automatically limit the speed.
7.16 Operator off-position control
When the industrial truck is in normal working condition, the operator leaves
from the seat or standing area, to observe whether the industrial truck can
automatically lock the running and operation actions.
7.17 Personnel sensing distance control
Set obstacles (simulators) in the traveling direction of industrial trucks. Drive
the industrial trucks slowly toward the obstacles. When the distance between
the obstacles and the industrial trucks is less than the set safe working distance,
observe whether the industrial trucks can issue an alarm; whether it can
automatically limit the speed.
7.18 Real-time data transmission function
The industrial truck is in an unloaded state. It is verified on the spot whether the
monitoring system has a real-time display function of industrial truck operating
status; whether it can display the working status and working parameters of
industrial trucks in the form of graphics, images, icons or text.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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