As the elevator in order to prevent damage or improper operation of the driver an accident, according to relevant state regulations, elevators should be installed following the necessary safety devices, Elevator Parts:

1. Brake. Control of elevator traction machine parts start to stop brakes, allows the elevator car to stop in time increase or decrease;

2. Limit switch. Inhibit the car to the highest open position or lowest position can not continue to run the devices;

3. More way switch. Car driving to the highest or lowest position location, such as the limit switch out of control, car will continue to rise or fall. In order to prevent car hoisting or sink to the bottom, should be installed to cut off the power supply and the more processes can not automatically reset switch, and installed in the engine room, but not installed in the well within the province;

4. Elevator Buffer: In order to reduce car hoisting or sink to the bottom of the energy absorbing movement mechanism should be installed with the energy and reduce the impact of buffer. At the same time, touching the bumper and the car at or sponge rubber plant in order to reduce its impact on energy;

5. Elevator Safety Gear: In order to prevent fracture due to wire rope hoist, rope tank skid, etc. lead to a sudden car crash accident, should be cut off the car on the device can simultaneously control the power supply and to make car safety gear to stop falling. There is no safety gear of the car can not be brought by the person or persons. Simple case of elevators, there should be to prevent the people inside the car when the car suddenly crashed cargo security devices (safety stop pin, etc.);

6. Overspeed Governor: In order to prevent running faster than normal speed, any more than three (including three floors) is brought by the person or persons elevator shall be equipped with speed control (two or less (including two-story building) may from time to equipment), such institutions in general and safety gear into one;

7. Elevator Door: In order to prevent persons head, hands, feet and objects falling out vertical wells Tao Tao, import and export should be installed by the car containing security doors. Public places, family houses and flammable and explosive materials used in places such as elevators, the vertical door should be closed, the car should be full to the doors, well Road (Door) of not less than 1.8 meters high;

8. Door electric switch. In order to prevent as vertical doors carry a car door, the door is not closed jiaoding to accidents, should be vertical doors and on car journeys door power switching device on the door;

9. The door interlock. In order to prevent the vertical door and set the car door by starting out or head, hands, feet stretched out and the incident should be contained by vertical car door and the door (more than two doors) to install the door interlock;

10. Elevator Electrical Device: In order to prevent damage to electrical equipment, so that the lift of metal structural elements of live and electric shock accident occurred, in electrical equipment, metal casing and lift the metal structure, shall be packed safety grounding device, application of multi-strand wire and grounding wire can not not use the neutral wire as a safety ground wire to use, the grounding resistance of not more than 4 ohms;

11. Limiting rope switch. When the speed limit trip or a broken rope steel wire rope, it can cut off the elevator control power supply, so that elevators can not be switched on;

12. Elevator counterweight unit. Each elevator must have weight equipment, its weight should reach 40-50% of the weight of hanging objects.

Transmission of protective measures

A variety of machine tool drive mechanism commonly used are: gear transmission, belt transmission mechanism, transmission mechanism and the screw thread coupling and other parent. All of these institutions are high-speed movement of the rotating body, a part of the person being brought into the cutter will cause varying degrees of injury, so the risk of transmission must be part of the installation of reliable guards to ensure their personal safety.

1. Gear meshing transmission protection. In the transmission gear system, the straight-tooth, helical gear, bevel gear and worm gear drive in any kind of are very dangerous. Therefore, the vast majority of gear transmission are all-enclosed protective devices, such as various machine tool spindle gearbox, feed gearbox. However, there are always a few gears exposed outside the machine, which will bring harm, therefore, should be exposed for all the gear in the machinery of external protective devices installed. Shield Multi-iron welded together, their appearance should be in line with the gear shape, the installation should be sturdy solid, smooth appearance, artistic, and without leaving sharp corners, to facilitate the switch, repairs and maintenance.

2. Belt drive. Belt transmission smooth, low noise, simple structure and to prevent overload, it is widely used in the machine Drive. However, friction belt is easy to produce high-speed rotation of Health electricity and discharge phenomenon, we should not be used in places prone to flammable and explosive. Belt transmission belt into the main risk is that the local peace belt pulley connector Department, it is generally used on the machine belt belt drive mechanism required to install protective cover, the air above the ground for more than 2m wide, high-speed belt should also be added protective measures. In general multi-purpose belt shield thin iron production, installation card must firmly to prevent vibration off. Note of this when using the belt connector KAKU solid, elastic appropriate, to prevent the disconnect.

3. Coupling pieces of protection. Which would highlight the high-speed rotation in the axis of the Law of blue plates, keys, pins and connecting bolts are all risk factors, often with a twist clothes people get hurt. For this to be used countersunk head screws, without prominent part of the safety coupling as well as tubular protective cover and other measures to ensure the safety of driving.