Overview The tracker is the steering wheel on the narrow gauge line of the mine and is an important part of the switch. So far, most of the mines used are manual heavy hammer type trackers, which use the handle to drive the crank mechanism to make the rods move the tip rails to reciprocate and complete the task of changing the track. The base and handle weight of this type of tracker are cast from cast iron, which is heavy, easy to break and damage, difficult to maintain, small contact force of the tip rail, and the adhesion can not be adjusted. During the use, the handle weight and foot accidents often occur. In response to this situation, our mine has developed a new type of dual-purpose vertical spring tracker that is reliable in operation, flexible in operation, light in weight, strong in point rail contact, and can utilize the existing waste materials in the mine. Not only does it improve the safety of narrow-gauge lines, but it also reduces transportation costs.
The structure of the transfer mechanism is designed as a structure of a vertical spring transfer device for the dual-purpose handrail. The structure diagram of the transfer device is regarded as a swinging slider mechanism, and the swing angle of the crank is 90 degrees, and the crank drives the swing link to swing. The distance between the two points is the stroke of the switch. A spring is installed between the movable guide rod and the slider to ensure that the tip rail is closely attached to the basic rail and maintains sufficient adhesion. The amount of the pressing force can be adjusted by the nut. The cranking of the crank is achieved by the handle on the vertical shaft. The track rails are used to calculate the original BLS130/588 manual tracker used in our mine. The tip rail is 588N, the stroke of the switch is 130mm. The crank length of the new track is AB=100mm; the crank rotates. The distance from the center to the center of rotation of the slider is BD=280mm; according to Fig. 2, the stroke of the switch link of the new type of dual-purpose vertical spring tracker can be calculated: AC=2ABSin45b=141.4mm, the Roots water ring vacuum unit meets 5 narrow track å²” quality standard 6 tip rail travel at 80110mm national standard requirements.
Since the spring is applied between the guide rod and the slider, that is, on the AD rod, it is necessary to calculate the force of the AD rod. According to the force balance convergence theorem, the force of the connecting rod and the force of the AD rod, the force of the crank AB rod must be transferred to one point, that is, to the knot node A, and then according to the geometry of the plane intersection force system Condition, the force triangle composed of this force should be closed by itself. It is obtained by the triangle ADO: AD=193.38mm; NA=21b27c; therefore, NDAB=113b33c. From the sine theorem: PDsinD=PbsinBPD=sin21b27cPbsin45b=0.517PbPD: The contact force of the rod N; Pb guide spring pressure N; according to the contact force 588N of the BLS130/588 type tracker, it can be calculated: PD=588/0.517=1137.33N The minimum working load of the spring is 1137.33N, I The new type of dual-purpose vertical spring tracker developed by the mine has been calculated. Reflecting the interface is clear, easy to operate, management specifications, accurate billing, but they also proposed whether the system can remotely control the reader computer through the LAN, to achieve some operations, such as notifying readers to timeout, monitoring the reader's computer, unified execution of executable files, Forced shutdown and other operations, I believe that the use of the Internet components provided by Delphi5.0 can achieve the above functions, when the computer in the electronic reading room is very large, it is necessary to adopt such a method.
Peeled Or Turned Steel Bar is produced by peeling or turning from hot rolled steel bar. Our advantages and more services of Cold Drawn Steel Round Bar includes:
1) Wide range of diameters from 20mm to 150mm
2) Customized Length from 100mm to 12000mm
3) Good surface roughness: 0.4um to 1.6um
4) Good straightness: 0.5mm/m to 2mm/m
5) Good roundness: 80% of diameter tolerance
6) Diameter tolerance: -0.02mm to -0.1mm / h9, h10, h11
7) Matched further processing: Grinding, polishing, straightening
8) Anti-rusty package
9) Full sets of testing equipment: Surface, Dimenstion. Mechanical properties testing
10) Fast delivery time
Peeled Or Turned Steel Bar
Bright Bar,Turned Steel Bar,Peeled Steel Bar,Peeled Or Turned Steel Bar
SHANDONG LE REN SPECIAL STEEL CO., LTD. , https://www.chinasteelok.com