The Coal Mine Safety Regulations require what protection must be installed in the lifting equipmen

Except for mobile or auxiliary winch, the ratio of the minimum diameter of the overhead wheel, drum, friction wheel, guide wheel and guide roller of the lifting device to the diameter of the wire rope shall meet the following requirements:

1) The friction wheel and guide wheel (including the overhead wheel) of the floor-mounted and tower friction lifting device with guide wheel shall not be less than 90 in the well and not less than 80 in the underground; The friction wheel of the tower friction lifting device without guide wheel shall not be less than 80 in the well and 70 in the underground.

2) The drum of the bore lifting device and the sky wheel with an enclosing angle greater than 90 ° shall not be less than 80; The celestial wheel with an encirclement angle of less than 90 ° shall not be less than 60.

3) The drum of the underground hoisting winch and the sinking hoisting winch, the leading wheel and tail guide wheel of the underground overhead passenger device, and the overhead wheel with a hug angle greater than 90 ° shall not be less than 60; The celestial wheel with an encirclement angle of less than 90 ° shall not be less than 40.

4) The drum and guide wheel of the gangue mountain winch shall not be less than 50.

5) In the above lifting device, if the sealed lifting wire rope is used, the corresponding ratio should be increased by 20%.

6) Suspension pumps, hanging plates, pipes with drums and wheels, winch drums and wheels for transporting materials when sinking wells, swimming wheels for inclined shaft roadway hoisting winch, rope rollers for gangue mountain winches and guide rollers for endless rope transportation, etc., shall not be less than 20.

Article 417: The diameter of the overhead wheel, the active friction wheel, and the guide wheel of the vertical shaft, or the ratio of the minimum diameter of the rope winding part of the drum to the diameter of the thickest steel wire in the wire rope, must meet the following requirements:

a) The lifting device on the well, not less than 1200.

2) Lifting device for underground and sinking wells, not less than 900.

3) The lifting device for lifting and lowering materials and hanging pumps and hanging plates during the sinking period shall not be less than 300.

1) Anti-over-roll device;

2) Anti-overspeed device;

3) Overload and undervoltage protection device;

4) speed limit protection device;

5) Depth indicator fail-safe device;

6) Gate gap protection device;

7) loose rope protection device;

8) Full warehouse protection device;

9) Deceleration function protection device;

In addition, a car setting device is added.

Strip breakage slip protection device.

Anti-deviation protection device.

Coal pile protection device.

Tear protection.

Smoke temperature alarm fire extinguishing system device.

Protective devices along the line.

Backstop protection device.

Positive with protective device.

Integrated protection and centralized control.

Soft-start device.

Ventilation, anti-gas, anti-coal dust, fireproof. Relevant laws and regulations stipulate that the ventilation, anti-gas, waterproof, fireproof, anti-coal dust, anti-roof and other safety equipment, facilities and conditions of coal mines shall comply with national standards and industry standards, and there shall be measures to prevent production safety accidents and perfect emergency response plans.

If a coal mine has any of the following major hidden dangers and behaviors in production safety, it shall immediately stop production and eliminate the hidden dangers:

1. Organizing production with superpower, superstrength or overcapacity; Slag.

2. Gas overrun operation;

3. Coal and gas outburst mines, failing to implement anti-outburst measures in accordance with regulations;

4. The high gas mine does not establish a gas extraction system and monitoring system, or the gas monitoring system cannot operate normally;

5. The ventilation system is imperfect and unreliable;

6. There is a serious flood and no effective measures have been taken;

7. Over-layer cross-border mining;

8. There is a danger of rock burst, and no effective measures are taken;

9. The natural fire is serious and no effective measures are taken;

10. The use of equipment and processes that are expressly prohibited or eliminated.

Legal basis

Special Provisions on the Prevention of Coal Mine Production Safety Accidents

Article 8 The ventilation, anti-gas, waterproof, fireproof, anti-coal dust, anti-roofing and other safety equipment, facilities and conditions of coal mines shall conform to national standards and industry standards, and there shall be measures to prevent the occurrence of production safety accidents and perfect emergency response plans。

If a coal mine has any of the following major hidden dangers and behaviors in production safety, it shall immediately stop production and eliminate the hidden dangers:

1) Organizing production with superpowers, overstrength, or overcapacity;

2) Gas overrun operations;

3) Coal and gas outburst mines, failing to implement measures to prevent outburst from being rented in accordance with regulations;

4) The high gas mine has not established a gas extraction system and monitoring system, or the gas monitoring system cannot operate normally;

5) The ventilation system is imperfect and unreliable;

6) There is a serious flood and effective measures have not been taken;

7) Over-layer cross-border mining;

8) There is a risk of rock burst, and effective measures are not taken;

9) The natural fire is serious and no effective measures are taken;

10) The use of equipment or processes that are expressly prohibited from being used or eliminated;

11) Coal mines with an annual output of more than 60,000 tons do not have a dual-circuit power supply system;

12) The construction of a new coal mine and production at the same time, during the period of coal mine reconstruction and expansion, production in the area of reconstruction and expansion, or production in other areas exceeds the scope and scale specified in the safety design;

13) After the implementation of the overall contracted production and operation of the coal mine, the coal mine engages in production without re-obtaining the safety production license and the coal production license, or the contractor subcontracts again, and the coal mine contracts the maintenance of the underground mining face and the shaft roadway;

14) During the period of coal mine restructuring, the person responsible for production safety and the safety management organization are not clarified, or after the completion of the restructuring, the mining license, safety production license, coal production license and business license are not re-obtained or changed;

15) There are other major hidden dangers in production safety.

According to the requirements of China's "Coal Fool Mine Safety Regulations" on hoist signals, the regulations stipulate that wellhead signals and hook signals must be set up in the hoist maintenance channel, motor room, working face, wellhead and wellbore to ensure the safety of hoist operation. However, the "Coal Mine Safety Regulations" do not clearly stipulate that the hoist signal has a backup function. Generally speaking, the design and installation of the hoist signal needs to meet the following requirements:

The signal and the hoist operation should be strictly corresponding, the signal device should be firm and reliable, the signal junction should not be missed, and the signal sensitivity should be appropriate. Some hoist signal design takes into account the need to set up a backup device in consideration of emergencies such as failures. Therefore, in the actual working process, if the signal of the reed lift has a standby device, then when the main signal fails and cannot operate normally, it can be switched to the standby device to ensure the safety of the hoist operation.

However, the specific situation still needs to be formulated according to the actual situation of the coal mine site and the high-level regulation system.

Summary. Qinqin is happy to answer for you, the signal of the coal mine safety regulations hoist has a backup function. To ensure the reliability of the coal mine hoist system, the signaling system is usually equipped with a backup function.

The setting of the backup function can improve the reliability of the system and prevent the interruption of operation caused by equipment failure, etc. <>

Does the signal of the <> coal mine safety regulations hoist have a backup function?

Qinqin is happy to answer for you, the signal of the coal mine safety regulations hoist has a backup function. In order to ensure the reliability of the hoist system of the coal mine, the signal system is usually equipped with the function of preparing for Zen type annihilation. The setting of the backup function can improve the reliability of the system and prevent the interruption of operation caused by equipment failure, etc.

Kaihe Chongxin] dear, your ** has been received.

What does a backup signal mean? Or is it just a long stop signal?

The standby signal refers to the standby braking side-action signal or the standby power signal. The standby signal is to ensure the reliability of the signaling system and to activate the backup signal when the main signal is unusable.

Kiss, no.

The safety equipment, facilities and conditions of coal mines (ventilation, gas prevention, waterproofing, fire prevention, coal dust prevention, and roofing prevention) shall comply with national standards and industry standards.

Safety equipment mainly refers to the mechanical equipment and equipment installed and used for rescue in order to protect the safety of employees and other participants in production and business activities, prevent production safety accidents and be used for rescue in the event of production safety accidents, such as self-rescuers, fire extinguishing equipment used in mines, safety detection systems, gas detectors, wind measuring instruments and other safety testing instruments.

Some safety equipment is used as auxiliary equipment for production and operation equipment, which needs to be used in conjunction with these equipment; Some are able to play an independent role in ensuring safe production. These safety equipment need to be equipped in production and business activities in accordance with relevant national requirements to ensure production safety and accident rescue smoothly.

As an important equipment for production and business activities, the performance of safety equipment and whether it is used properly are directly related to the safety of production and business activities, as well as whether it can be rescued and reduced in time when production safety accidents occur. It is of great significance to standardize the management of every link of safety equipment from design to scrapping to ensure the performance of safety equipment.

As the user of safety equipment, the production and business operation entity stipulates its obligations of maintenance, maintenance, and testing in the process of using safety equipment to ensure that the safety equipment can play an effective role.