.5 Gross weight 5 10 20 30 40 50 100 200 kg x 1000 kg x lb x 10 20 30 40 50 100 150 200 300 400 lb x 1000 1000 1000 90 200 D 70 70 150 50 100 40 But 30 1080 60 20 20 10 60 40 30 20 20 1st gear "1 2nd 5 Rimpull + 3 30% -25%- 20% 50,000 lb 15% (22,700 kg) load Empty 10% 8% 6% 4% gear 3rd gear 15 4th gear 10 5th gear. 0 6th gear 7th gear 9 2 2 3 + 8th gear 2% Total Resistance (Grade plus Rolling) Direct Drive Torque Converter Drive --- 5 10 15 20 25 30 35 40 45 mph T 10 20 30 40 50 60 70 80 km/h Speed
.5 Gross weight 5 10 20 30 40 50 100 200 kg x 1000 kg x lb x 10 20 30 40 50 100 150 200 300 400 lb x 1000 1000 1000 90 200 D 70 70 150 50 100 40 But 30 1080 60 20 20 10 60 40 30 20 20 1st gear "1 2nd 5 Rimpull + 3 30% -25%- 20% 50,000 lb 15% (22,700 kg) load Empty 10% 8% 6% 4% gear 3rd gear 15 4th gear 10 5th gear. 0 6th gear 7th gear 9 2 2 3 + 8th gear 2% Total Resistance (Grade plus Rolling) Direct Drive Torque Converter Drive --- 5 10 15 20 25 30 35 40 45 mph T 10 20 30 40 50 60 70 80 km/h Speed
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
A wheel tractor-scraper is operating on a level grade. Assume no power derating is required for equipment condition, altitude, and temperature. Use equipment data from Fig. 6.7.
-
Disregarding traction limitations, what is the maximum value of rolling resistance (in lb/ton) over which the fully loaded unit can maintain a speed of 10 mph?
-
What minimum value of coefficient of traction between the tractor wheels and the traveling surface is needed to satisfy the requirements of part a? For the fully loaded condition, 50% of the weight is distributed to the drive axle. Operating weight of the empty scraper is 89,973.0 lb.
Transcribed Image Text:.5
Gross weight
5
10
20
30 40 50
100
200
kg x 1000
kg x lb x
10
20
30 40 50
100
150 200
300 400
lb x 1000
1000 1000
90
200 D
70
70
150
50
100
40
But
30
1080
60
20
20
10
60
40
30
20
20
1st gear
"1
2nd
5
Rimpull
+
3
30%
-25%-
20%
50,000 lb
15%
(22,700 kg)
load
Empty
10%
8%
6%
4%
gear
3rd gear
15
4th gear
10
5th gear.
0
6th gear
7th gear
9
2
2
3
+
8th gear
2%
Total Resistance (Grade plus Rolling)
Direct Drive
Torque Converter Drive
---
5
10
15
20
25
30
35
40
45
mph
T
10
20
30
40
50
60
70
80 km/h
Speed
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