On the evening of July 28, Greatoo Intelligent (SZ002031) announced that Mr. Wu Hao, the company's director, general manager and secretary of the board of directors, unfortunately died on duty in the company's inspection work on July 28.
According to Greatoo Intelligence’s annual report, Wu Hao is 45 years old. He is a master’s degree candidate, a senior engineer, an economist, and a first-class registered construction engineer. He once served as a shareholder representative supervisor and vice president of the company. Since January 2014, he has served as the secretary of the company's board of directors; since January 2017, he has served as the director of the company; since December 2022, he has served as the general manager of the company. In December 2022, he was promoted to general manager of the company. As of his death, he had served in this position for less than a year.
Image Source: Announcement Screenshot
According to media reports, Wu Hao died of an accident. The main business of Greatoo is tire molds, which involve large machinery. On July 28, Wu Hao was in the process of checking the work, the machine suddenly started, resulting in serious injuries and eventually died.
According to public information, Greatoo Intelligent’s full name is Greatoo Intelligent Equipment Co., Ltd. The company is the first listed tire mold development and manufacturing enterprise, a key high-tech enterprise of the National Torch Program, a national technological innovation demonstration enterprise, and the first batch of 15 companies in the country. Industrial robot industry standard enterprise.
All inspection teams are requested to deeply learn the lessons of the accident, draw inferences from one instance, and keep ringing the alarm bells. When carrying out safety inspections and rectifications of mechanical equipment, they must implement safety management and energy isolation measures for mechanical equipment, and effectively ensure that the "four must haves" (axis must be If there is a cover, if there is a wheel, there must be a cover, if there is a platform, there must be a fence, if there is a hole, there must be a cover), "four non-repairs" (no repairs when live, no repairs under voltage, no repairs when high temperature is too cold, no repairs without special tools), "Four outages" (outage without interlock protection, outage without earth leakage protection, outage without pre-job training, outage without safety operating procedures).
At the same time, each enterprise should organize employees to conduct a safety training on mechanical equipment operations for all employees, strengthen the publicity of preventing mechanical injury accidents, recognize the risk factors in the operation process, improve employees' safety awareness, and prevent similar accidents from happening.
Common mechanical equipment that causes mechanical damage:
Mechanical injuries mainly refer to injuries in the form of pinching, collision, shearing, entanglement, twisting, grinding, cutting, stabbing, etc. caused by the moving (stationary) parts, tools, and processed parts of mechanical equipment directly in contact with the human body.
The exposed transmission parts (such as gears, shafts, crawlers, etc.) and reciprocating parts of various rotating machinery may cause mechanical damage to the human body.
Various hoisting equipment and supporting slings;
All kinds of rotary cutting and grinding equipment, drilling equipment, hand-held electric tools;
Self-propelled automatic welding machine, plate rolling machine, plate shearing machine, compressor;
And hammers, handsaws, crowbars, pliers and other tools.
During the use of these equipment and tools, if the operation is improper or careless, mechanical damage will occur, and the frequency of occurrence is relatively high, and some will cause serious injury to the person.
Cause Analysis of Mechanical Injury Accidents
1. Human unsafe behavior
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There are mainly two reasons for personnel's operation error and entering the dangerous area by mistake.
The main causes of human error are:
1 The noise generated by the machine paralyzes the operator's perception and hearing, making it difficult or wrong to judge.
2 Mistakes caused by manipulating or controlling machinery based on wrong or incomplete information.
3 The display error of the mechanical display, indication signal, etc. causes the operator to misuse.
4. Poor recognition and standardization of the control and manipulation system cause operators to make operational errors.
5 Time is tight so that problems are dealt with without sufficient consideration.
6 Operation errors due to lack of awareness of the dangers of moving machinery.
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7 Unskilled technology and improper operation methods.
8 Insufficient preparation, poor arrangement, and operational errors due to haste.
9 Improper operating procedures, insufficient supervision and inspection, and illegal operations.
10 Artificially put the machine in an unsafe state, such as taking off the safety cover, cutting off the interlocking device, etc. Take shortcuts, seek convenience, ignore safety procedures, such as not cranking, not replacing analysis, etc.
The main reasons for straying into the danger zone are:
1 Changes in the operation of the machine, such as straying into the danger zone when changing operating conditions or improving safety devices.
2. The mentality of saving trouble and taking shortcuts. For familiar machines, some programs will be omitted intentionally and strayed into the danger zone.
3 The danger area is forgotten under conditioned reflex, or the danger area is not indicated, and the operator enters by mistake.
4. The monotonous and boring operation makes the operator tired and strays into the danger zone.
5 stray into the danger zone due to visual or auditory errors caused by physical or environmental influences.
6 Wrong thinking and memory, especially for new workers who are not familiar with the machine and operation, it is easy to stray into the danger zone.
7 The commander made a wrong command, and the operator failed to resist and strayed into the danger zone.
8 Miscommunication of information leads to danger zone.
9 Mistakes under abnormal conditions and other conditions.
Second, the unsafe state of machinery
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The unsafe state of machinery, such as imperfect safety protection facilities of the machine, lack of safety and sanitation facilities such as ventilation, anti-virus, dust-proof, lighting, shock-proof, noise-proof and meteorological conditions, etc., can all induce accidents. In addition, if the mechanical equipment is non-intrinsically safe equipment, such equipment lacks an automatic detection system or has a defective design, which cannot fundamentally prevent personnel from misoperation, and may easily lead to accidents.
Hazard sources of injury accidents caused by machinery
1 Rotating parts have the danger of involving human body or objects from the outside; machine tool chucks, drills, milling cutters, etc., transmission parts and protruding parts of the rotating shaft have hooks on sleeves, trouser legs, long hair, etc. The danger of being involved; the wind fins and impellers are in danger of being crushed; the rotating drum is in danger of causing people to be involved.
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2 There is a risk of bruising and crushing in parts that perform linear reciprocating motion. The molds, hammer heads, knife edges and other parts of stamping, shearing, forging and other machinery have the danger of collision and shearing.
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3 There is a danger of impact on the swinging parts of the machine.
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4 There are also different potential risk factors in the control points, manipulation points, inspection points, sampling points, and feeding process of machinery.
3. Environmental factors
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Unfavorable operating environment, such as messy work area, poor access, water on the ground and other environmental factors will also lead to mechanical injury accidents.
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Prevention of Mechanical Injury Accidents
To prevent mechanical injury accidents, we mainly start from the following aspects:
1 Equipped with intrinsically safe mechanical equipment
Intrinsically safe mechanical equipment is equipped with an automatic detection device. When someone's hand and other limbs are under a dangerous part of the mechanical equipment, such as a knife edge, even if someone accidentally touches the switch of the equipment, the equipment will not move, thereby protecting the safety of personnel.
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2 Strengthen the management of mechanical equipment and operators
1. Formulate detailed operating procedures for mechanical equipment, and strengthen training for equipment operators, so that employees can improve their safety awareness and realize the risk factors in the operation process.
2. Equip employees with qualified personal labor protection products, and urge employees to use them correctly.
3. Strengthen the management of the equipment operation area, and clean up the sundries in time to keep the operation area clean and tidy, and the passages unblocked.
4. Regularly inspect the machinery and equipment, and deal with the hidden dangers and problems of the equipment in time, so that the various safety protection measures of the machinery and equipment are in good condition.
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3 Create a good working environment
Operators should pay attention to work and rest time, take adequate rest, and maintain a good condition.
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