The problem of upgrading the system is the important part of mine production, and the lifting container is an indispensable part of the lifting system. In various lifting containers, the cage is a multi-purpose lifting. Containers, mines that use double hooks to raise cages, each level needs to enter and exit the mine car. Usually, the cages are supported by three types: the receiving beam, the tank seat and the cradle. These types of receiving methods have certain disadvantages. The use of the receiving beam and the tank seat is prone to a foot tank accident, and these two types of receiving methods are now rarely used. At present, the most commonly used method is to undertake the cradle, the cradle has no bearing capacity, and the driving device is required. In addition, in order to prevent the cradle from malfunctioning, the cradle and the lifting signal system are specified in the 361th section of the 1992 5 Coal Mine Safety Regulations. A series of interlocks, which brings complexity to the use and maintenance of the cradle. In addition, when the tank cage of the tank is used as the receiving device, in order to prevent the impact swing of the cage from entering and exiting the vehicle too large, a steel stable tank device must be added at the wellhead and the bottom of the well so that the rocking table can be normally received, thus increasing The initial investment of the lifting system increases the amount of maintenance in use, and more importantly, because the adjustment height of the cradle is limited by the length of the rocker arm, the correctness of the canning is higher. Especially in the mine with double hook lifting, if the elongation of the hoisting ropes on both sides is large, the two cages in the well can not be loaded and unloaded at the same time. At this time, the tank must be adjusted twice, that is, the side is first The cage (upper well or downhole) arrives at the parking position. After the loading and unloading is completed, the tank is moved to the other side to reach the parking position for loading and unloading, which causes troubles in operation and increases the wear of the lifting equipment. , extended the lifting cycle time, reduced the lifting efficiency, and increased the power consumption of the lifting process.
Advantages and disadvantages of spring-buffered safety receiving device (1) Advantages of spring-buffered safety receiving device Spring-loaded safety receiving device not only has correct positioning, simple operation, safety and reliability, strong applicability, small loading impact and low failure rate In addition to the advantages of no need for external power, no need to adjust tanks twice, reduce loading and unloading strength, and improve loading and unloading efficiency, it also brings many of the following benefits: 1) Comparison of cart loading positions due to accurate loading position It is stable and avoids the mine car falling off when the car is being operated. It not only ensures the safety of the car, but also extends the service life of the cart. 2) When using the cradle, if the difference between the weight of the incoming vehicle and the weight of the vehicle is large, the cage will fluctuate greatly when loading, and the impact of the wheel on the cradle of the exit side will be relatively large, and the mine will often be cut off. The phenomenon of the car axle, the swaying cradle, etc., and the use of the spring-buffered safety receiving device completely avoid these problems. Due to the accurate positioning of the loading, the impact force on the metal structure beam of the lower wellhead is small when loading 3) The operation of the wellhead operator, the signal worker and the elevator driver is simplified, and the chance of misoperation is reduced. 4) Since the lower shaft cradle is removed, and the spring buffer type safety receiving device is not easily damaged during use, the maintenance amount of the receiving device is greatly reduced, and the maintenance cost and replacement cost of the receiving device are saved.
In view of the above problems, the following measures can be taken: the use of a spring-buffered safety receiving device requires that the two hook lifting wire ropes (especially the new rope) be more accurate when performing the pairing. When the rope is roped, the supporting claw will be taken back. When the upper tank is flat, the bottom surface of the lower cage is generally not more than 500mm (not exceeding the elastic elongation of the hoisting rope), so as to ensure the lifting rope is in the cage. The moment of starting the lifting is not violently stretched, and the rope is regularly applied after normal use. The experience of long-term use of spring-buffered safety receiving devices proves that in the case of full-speed over-rolling, the cage can safely pass through the receiving device, and there is no danger to the occupants in the tank. However, in order to avoid occupant discomfort, the claws should be retracted when the personnel are released. To ensure that the cage is not used when the cage is used to lower the personnel. According to the survey, most of the mines that use double-deck cages are upgraded by the lower tanker and the upper tanks are taken by people (except when the kiln is delivered), and the layers of the double or multi-layer cages are required to be supported. The problem is currently under development.
In summary, the spring-buffered safety receiving device solves the problem of safely accepting the double-hook lifting cage of the shaft that needs to be supported by a single layer, overcomes the defects of the receiving device such as the tank seat and the cradle, simplifies the operation process, and gives the operating system And the lifting system brings many benefits, especially in the case that the entire lifting system does not need any technical transformation, only the transformation of the receiving device can shorten the lifting cycle time, which not only saves the electricity consumption during the tank adjustment, but also enhances the The efficiency is significantly improved. Since there are many mines with single-layer loading and unloading trucks, the shaft lifting cage spring buffer type safety receiving device has the value of popularization and application in the system.
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