Instruction Manual
UBG
–
Round bale grapple
–
1 hydralic cylinder
UBG2C
- Round bale grapple
–
2 hydralic cylinder
UBGS
- Round bale grapple SMART
USBG
–
Square bale grapple
Page
15
z
35
Table No. 2 Theoretical force Fmax [tonnes], which may act on grapple
clamped to the vehicle with the weight of 5000 kg with changeable speed
and braking distances.
The data concerning forces acting on the vehicle
–
grapple unit will require high level
of qualifications from persons operating the machine and appeal to consciousness
of hazards appearing during operation of grapples transporting bales with fodder.
It is essential to choose the safe vehicle driving speed in order to guarantee that the operation
does not constitute the risk for environment and operating personnel
–
the vehicle's operator.
It is of great importance to take care of even distribution of forces by the user as well as of
symmetrical pressure distribution of clamping arms. You should never operate the grapple with
only one arm loaded.
To prolong operation life of the grapple you should remember that the forces acting during
operation, both at gathering and clamping of grapple were evenly distributed.
4.4. Assessing stability of a tractor with the machine attached
In this paragraph the stability requirements of a tractor and the machine are presented as well
as a method of calculating required ballasts. Maximum permissible operating weights of the
machines are given in Table No. 1. The vehicle data may be found in its instruction manual.
The tractor coupled with the machine may lose its stability.
The weights of the machine and the tractor have to be properly chosen.
Before you start to work you must familiarize with stability assessment and
make sure that operation conditions given below are fulfilled.
If the machine stability requirements are not observed, this can lead to loss of
tractor's stability. It may create a risk of serious body injures or even death. You
should always take into account and observe stability requirements.
Breaking distance S
[m]
Vehicle speed V [km/h]
5
10
20
0.1
2
11
30
0.2
1
6
15
0.5
0.5
2.5
6
1.0
0.3
1
2.5
