Mine upgrade original parameters
(1) Self-weight of the cage (including rope loop, etc.) 3960kg load 3300kg Among them: mine car weight 600kg ore weight 1800kg occupant (12 people) 900kg.
(2) Lifting wire rope specification 18@7-34-170 steel wire total sectional area 478.72mm2 suspension length 300m elastic modulus 14.3N/cm.
(1) The cage can be accurately received when it is on the receiving device with the maximum rated load and normal crawling speed, ensuring smooth and smooth entry and exit of the mine car.
(2) When the cage is in the light tank (empty tank by one person), it can be buffered when it falls on the receiving device at the over-discharge speed. According to the requirements of Execution Note 6 of 5 Coal Mine Improvement Design Codes 6 and 5, the buffer deceleration should be greater than 1g when lifting materials (heavy tank), and the deceleration should be less than 5g when light tanks (by 1 person). The design parameters of the bottom hole cage of the auxiliary shaft of the city coal mine are as follows: the claw length is 270mm; the cage claw is 60mm; the side middle distance is 170mm; the spring total stiffness is EK1197N/mm; the spring preload is 90kN; the claw buffer limit stroke is yj169.7mm The bearing capacity is calculated by the following formula: Fc=170cosA(9163+1702KsinA)2102+y2 is substituted into the actual parameters: the maximum bearing force is 117kN; the force point is 110mm; the average braking force is 107kN; the maximum deceleration of the empty tank is 3.06g; The speed is 2.8g. From V2=2as=2ay, the minimum critical speed of the tank cans is over the claws by 3.05m/s. The average deceleration of the heavy tank is a=1.508g, and the minimum critical speed through the claws is 2.23m. The /s.24 test was conducted to simulate the worst case conditions in the empty tank at the maximum deceleration.
experiment method
(1) Remove the 2m/s speed protection close to the wellhead.
(2) Move the upper wellhead over-winding switch to the tank cage and check its reliability.
(3) Verify the speed measuring generator, the speed measuring voltage is 215V at 6.7m/s.
(4) Set the relative position of the hoist drum when setting the claws of the bottom hole cage, and mark them so that the driver can brake accurately.
(5) A live goat (weight about 18 kg) was taken into the tank for animal testing.
The easy-maintained PU material is soft to wrap the whole tape measure inside, protecting it from dirt and impact. The PU cover can also be customized by the color and stamped with your company logo. Too maintain consistency of design, the tape puller is seamed with the same PU material. As to the fiberglass tape, it bears two different measuring units on the different side, among which, one side measures in inch and the other in centimeter. The reinforced vinyl tape features high flexibility which allows itself to measure both flat and curvy surfaces. Durable soft tape is waterproof and stain resistant, so it is easy to keep clean for clear measurement. The tape can be customized on the tape scale(cm/inch only or both), tape length(60inch/150cm normally), tape color and logo printing. User-friendly retractable feature enable simple storage and effortless retraction.
Features
- User-friendly retract button---effortless retraction and easy storage
- Personalized PU cover with stamped company logo---ideal promotional gift
- Inch and metric 2-in-1 tape---free from conversions and waterproof (other customized tape patterns is available)
- ABS plastic case---strong and durable to protect the inner mechanism and the tape
About Material
The tape measure is made of ABS case coated in PU leatheror real leather, PVC coated fiberglass. All the materials are eco-friendly, which pass ROHS and EN-71 tests. The lead content is less than 5ppm.
About Case Color
Case colors can be customized according to pantone code.
About Custom Logo
Custom logo is available.For 1-2colors logo, we will use silk printing
For full color logo, we will print it with heat transfer printing ,
And we also make normal sticker or epoxy plate logo sticker for single color or full color logo
For PU or real leather tape measure, we can make emboss logo
About Tape Colors
Standard tape colors are in white and black
We can make pink, green or other colors.
Full color design is available too.
About Tapeline Size
The standard length is 150cm/60inch and 100cm/40inches
We have longer one in length of 180cm/72inch and 200cm/79inch, and the maximum length is 214cm.
Tape width is 7.5mm.
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