Guide rail profile:
Select the tab sheet “guide rails” to go to the screen to select the rail profile and the profile properties.
Here you can select the manufacturer for the standard profile of the guide rails from the database.
Here you can select the desired type of rail depending on the manufacturer.
Here you can choose the material of the guide rails from the database.
Number of rails
Here you can determine the number of rails and it must be at least two guide rails and more than two has to be always an even number.
Rail profile properties
It shows the following profile property values:
- Cross sectional area,
- Radii of gyration,
- Geometrical moments of inertia,
- Section moduli
And the allowable bending and buckling of the selected material.
The data is taken from the database and can be changed or updated via the separate database management. During the execution, you can choose from the following list:
Guiding distance: Here you can enter the value of the distance of the car guides. Depending on the cabin altitude, there is a minimum value for the guide distance which indicates that it should not be less than (cab height + 100 mm). It can be set smaller, if this is possible in construction.
Mounting distance: Here you can enter the value of the fastener spacing of the guide rails in the shaft. This field is displayed in the color red when the maximum fixing distance is exceeded.
maximum possible Mounting distance: Here, the theoretical maximum value for the mounting distance of the guide rails is displayed in the shaft. This value is calculated depending on the entered loading data by the program and ist not able to changed by the system.
Options of the guide rails calculation car
Load on the guide rails
Here you can enter, whether a calculation of the load case “Loading”, with the additional charge Q, should be accomplished or not. In the case “Catching” and “Driving” is the additional charge Q always be taken into cosideration. By selection of the the option Q on the half area, at the goods elevators, will be the load also calculated to the half area. The standard prescribes the calculation to 3/4 of the area. Here the load is calculated according to a stricter standard than standard. This option is useful for goods lifts.
If you select the option “hanging rails”, so no buckling is calculated as the rails are loaded here to tension.
Number of guide rails
Here you determine whether the number of guide rails “Catching” in the load case differs from the actual number of guide rails. For example: If the number was set to 4 in the previous dialogue guide rails, it can be in the loading case “Catching” two or four guide rails , but no more.
Flange bending of the guide rails
By selecting the above formula, the flange flextensional will be used (important for “sliding guide” because no point loading is present, as in the case “roller guide”).
If this calculation is not selected, will be calculated according to the standard.
The guide rail height and the ridge width of the flange are taken from the database selected guide rail.
The distance “a” of the force to the flange is illustrated in the drawing and can be entered.
The length of the intervention force “b” is determined by the length of the guide shoe.
Length of torque intervention: “b” is shifted from the Flanschober or bottom edge by 45 °.
By clicking on the graphic you can enlarge it.
For slide guides must be b (intervention force) always > 0 entered according to the length of the sliding shoe.
For hard rolls can be entered zero for soft rolls a value which is bigger than 0.
For the flange bending will be in the automatic mode both loading cases checked; once transferred to q x and q once transferred to y.
The worse of the two cases will be printed, regardless of the worst load case for the other voltages; i.e. the load cases for the flange bending and other loading may vary.
You can, if desired, limit the deflection of the rails beyond the standard. Put for this purpose the check mark, if you want to use this option. Note that you can only reduce the permissible values. You also have the choice of option “Limited permissible deflection depending on amount of the rated speed”.
Results of the calculation of the guide rails
The menu item Calculations of the guide rails will show you the results for the states Catching, Driving, the Loading and pipe breakage. At first it will always displayed the worst case.
Results of the type of load
The data shown here can not be changed by the user. It can be read the values
- of the bending forces and bending moments,
- the maximum deflection,
- of buckling (ë, ù) and the total voltage.
Fields that are shown with a yellow exclamation mark, mark an exceedance of the permissible values.
Here you can determine whether the flange bending is taken into consideration in the calculations or not by clicking on this button. Flange bending will occur only in strong outside central or backpack-led , and even there only in conjunction with roller guides in the critical region.
Maximum occurring rail forces
This is the maximum force calculated from all load cases. These values are important, for example, for the load on the rail bracket or shaft wall. The maximum occurring rails forces will also appear in the printout. To enlarge the drawing next to the results, click on it. It opens a new window with the drawing.
Calculate the guide rails counterweight:
Proceed in the same to compute the guide rails for the car. The calculation of the guide rails counterweight only differs in the following points:
Type of load:
Here you are only able to choose between the type of load “Catching” and “Driving”.
There are no page choice here.
Counterweight data depth and width (frame):
The data can be here entered freely.
Lever arms of the force introduction of the ropes (S):
Here you can enter the lever arms of the force introduction with respect to the X-and Y-axis.
The position of the X-and Y-axis refer to the graphic.
The lever arms (S) are set centered by default to the guide rails [0,0]
For the load case “Catching” is this field not possible to select. In automatic mode, these coordinates are automatically calculated by the system. In manual mode, this input is required and has to be done by yourself.
Lever arms of the the center of mass (G):
Here you can enter the lever arms of the the center of mass of the counterweight relative to the X-and Y-axis. The position of the X-and Y-axis refer to the graphic.
In automatic mode, these coordinates are automatically calculated by the system The focus will be calculated with an eccentricity arising of 5% of the width and 10% of the depth.
In manual mode, this input is required and has to be done by yourself.
There are only the calculation for the case of “Catch” and “Travel”.
Save the guide rail calculation:
By selecting the button the dialog is closed and the entered values are copied into the order. A full overview of the already entered data will now be displayed. If you click on the tab “car”, guide rail results will be displayed: