Batedor de ponte rolante caracteristicas tecnicas

1. 1
Buffers
DPZ cellular plastic buffers, DPG rubber buffers, DPH hydraulic buffers
1097 EN 202 607 44 714 IS 883
41492144.eps

2. 2
Buffers
Buffers with a high energy absorption capacity are required to prevent any critical
deformation in structural steelwork resulting from travel units colliding with each other
or with the end of a track.
This type of buffer is used in crane construction and wherever impact energy of a pre-
defined maximum force has to be absorbed.
The complete volume of the buffer is utilized as pressure is distributed over the whole
section of the buffer. Lateral deformation remains low even under maximum com-
pression.
The favourable diameter-to-length ratio of the buffer ensures that any displacement of
the buffers due to play in the guidance of the crane on the rails has no adverse effect.
DPZ cellular plastic buffers
Due to its excellent physical qualities as regards elasticity, cushioning and energy
absorption, the cellular Polyurethane®
material is particularly well suited for buffers.
The energy absorbed by cellular plastic buffers increases with the speed of impact.
This results from the polytropic compression of the gases in the cellular structure.
The material is chemically resistant to ozone, oxygen, water, petrol and most oils and
industrial greases.
The buffer is fully functional at operating temperatures of – 20 °C to + 80 °C. In condi-
tions of high humidity in conjunction with high temperatures, the rubber buffer should
be used.
DPG rubber buffers
The buffer consists of a compact elastic rubber. This material features different char-
acteristics to that of the cellular plastic buffers.
The energy and final force curves for rubber buffers apply to both static and dynamic
loads.
This buffer material should preferably be used under conditions of high humidity. The
buffer is fully functional at operating temperatures of – 30 °C to + 70 °C.
DPH hydraulic buffers
The buffer is an enclosed system consisting of maintenance free hydraulic elements.
Owing to almost uniform deceleration, this buffer makes it possible to achieve the
smallest possible braking force for the shortest possible brake path.
Sizes DPH 7 and DPH 350 are self-adjusting hydraulic buffers. DPH 25 and DPH 80
are adjustable buffers and may be adjusted by means of a ring for various damping
applications (depending on mass or speed).
The piston is automatically returned.
The permissible ambient operating temperatures range from – 12 °C to + 90 °C for
adjustable and to + 65 °C for self-adjusting buffers; using special seals and special oil
from – 40 °C to + 120 °C.
The maximum axial deviation of the impact direction from the piston rod axis is ap-
prox. 3°.
Hydraulic buffers can be installed in any position.
With the standard mounting arrangement using the adapter, threaded pin and set
nut, the hydraulic buffer has the same mounting dimensions as the cellular plastic and
rubber buffers and may thus be used to replace them at a later date in already exist-
ing installations.
Mounting variant II as illustrated in foot or neck mounting configuration is a space-
saving arrangement which may be implemented if it is possible to accommodate a
larger bore hole. In this case, a second nut is then required for the self-adjusting hy-
draulic buffers.
41826044.eps
Mannesmann Dematic AG
P.O. Box 67, D-58286 Wetter
Telephone (+49 2335) 92-0, Telefax (+49 2335) 927676
Internet http://www.dematic.com
Manufacturer
Type DPZ
End face with
knobbed surface
Set nut
Threaded pin
Buffer with base plate
Diagram shows cellular plastic buffer

3. 3
Design and installation information
DPZ cellular plastic buffer with internal screw thread
suitable for RS wheel blocks and KTL travel units as well as RAM/RN wheel sets
Set nut Threaded pin
with hexagon socket
DPG rubber buffer with internal screw thread
suitable for RS wheel blocks and KTL travel units as well as RAM/RN wheel sets
Set nut Threaded pin
with hexagon socket
¹) Part no. includes cellular plastic buffer, threaded pin and set nut
¹) Part no. includes rubber buffer, threaded pin and set nut
40123644.eps
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4. 4
DPH hydraulic buffer
Standard mounting variant with adapter, threaded pin and set nut suitable for RS
wheel blocks and KTL travel units as well as RAM/RN wheel sets
Mounting variant II
Foot or neck mounting config.
41546802.eps
41546801.eps
Standard mounting variant with adapter
¹) Part no. includes hydraulic buffer, nut, adapter, threaded pin and set nut
²) Second nut required for mounting variant II with foot or neck mounting configuration
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5. 5
Cellular plastic buffer
Flexibility
range
s
[mm]
Energy Epu
[Nm] Buffer final forces Fpu
[kN]
Cellular plastic buffer
Flexibility
range
s
[mm]
Energy Epu
[Nm] Buffer final forces Fpu
[kN]
Cellular plastic buffer
Flexibility
range
s
[mm]
Energy Epu
[Nm] Buffer final forces Fpu
[kN]
Diagram 1
DPZ 70 cellular plastic buffer
Diagram 2
DPZ 100 cellular plastic buffer
Diagram 3
DPZ 130 cellular plastic buffer
10
v = 60 m/min
v = 120 m/min
v = 120 m/min
v = 60 m/min
20
30
40
50
600 400 200
200 5 10 15 20
41122544.eps
10
v = 60 m/min
v = 120 m/min
v = 120 m/min
v = 60 m/min
20
30
40
50
60
70
80
200
400
600
800 10 20 30 40 50 60
10
v = 60 m/min
v = 120 m/min
v = 120 m/min
v = 60 m/min
20
30
40
50
60
70
80
90
1600 1200 800 400 20 40 60 80
41122644.eps
41122744.eps
stationary stationary
stationary stationary
stationary
stationary

6. 6
Cellular plastic buffer
Flexibility
range
s
[mm]
Energy Epu
[Nm] Buffer final forces Fpu
[kN]
Cellular plastic buffer
Flexibility
range
s
[mm]
Energy Epu
[Nm] Buffer final forces Fpu
[kN]
Rubber buffer
Flexibility
range
s
[mm]
Energy Epu
[Nm] Buffer final forces Fpu
[kN]
Diagram 4
DPZ 160 cellular plastic buffer
Diagram 5
DPZ 210 cellular plastic buffer
Diagram 6
DPG 63 rubber buffer
41122844.eps
20
v = 60 m/min
v = 120 m/min
v = 120 m/min
v = 60 m/min
40
60
80
100
120
40 80 120 160
1000
2000
3000
4000
5000
41122944.eps
5
10
15
20
25
30
400 100
200
300 5 10 15 20
40 80 120 160
20
40
60
80
100
120
140
160
180
2000
4000
6000
8000
v = 60 m/min
v = 120 m/min
v = 120 m/min
v = 60 m/min
41123044.eps
stationary stationary
stationary stationary

7. 7
Rubber buffer
Flexibility
range
s
[mm]
Energy Epu
[Nm] Buffer final forces Fpu
[kN]
Rubber buffer
Flexibility
range
s
[mm]
Energy Epu
[Nm] Buffer final forces Fpu
[kN]
Rubber buffer
Flexibility
range
s
[mm]
Energy Epu
[Nm] Buffer final forces Fpu
[kN]
Diagram 7
DPG 80 rubber buffer
Diagram 8
DPG 100 rubber buffer
Diagram 9
DPG 160 rubber buffer
1000
10
20
30
40
50
50
40
30
20
10
200
400
600
800
41123244.eps
2000
10
20
30
40
50
60
70
1000 10 30
20
41123344.eps
10 30
20
10
20
30
40
400
500 300 100
200
41123144.eps

8. 8
Rubber buffer
Flexibility
range
s
[mm]
Energy Epu
[Nm] Buffer final forces Fpu
[kN]
Diagram 10
DPG 200 rubber buffer
Diagram 11
Hydraulic buffer selection
200
150
100
50 250
10
20
30
40
50
60
70
80
600 400 200
41123444.eps
DPH 7
DPH 25
DPH 80
DPH 350
DPH 25
DPH 7
DPH 80
DPH 350
300 600
1000
1250 2300 4000 6300 10000
8000
5000
10
50
100
500
1000
5000
20
40
80
100
60
200
31,5
12,5
0,5
1
5
10
v [m/min]
50
41123744.eps
Energy
Epu
[Nm]
Mass
mpu
[kg]
Final end forces
Fpu
[kN]

9. 9
Calculation and selection
(see 3.1 and 4.1)
For cranes: mpu
= R1
+ R2 For crabs and carriages: mpu
= R1
+ R2
Stop with counter-part buffer
Crab in extreme approach
dimension
Buffers calculated according to DIN 15 018
Buffers for cranes and crabs are calculated by considering one side of the installation.
The most unfavourable position of the load must be considered
• for cranes: crab or travelling hoist in the extreme approach position
• for crabs and carriages: consider the mass centre S
R1
, R2
[kg] wheel loads resulting from deadweight and rigidly attached loads
mpu
[kg] mass acting on one buffer
v [m/min] max. travel speed
Epu
[Nm) energy acting on one buffer
Fpu
[kN] buffer final forces
3.2 Determine the energy acting on
one buffer Epu
1) applies to buffers of the same size
Rigid stop with no
counter-part buffer
1
R
R 2
41123544.eps
1
R
R 2
41137844.eps
1 General
2 Definitions, symbols
and units
3 Calculation procedure
3.1 Determine the masses acting
on the buffer mpu See diagram
E
m v
pu
pu
=
⋅ ²
9965
E
m v
pu
pu
=
⋅ ²
19930
E
m v
pu
pu
=
⋅ ²
14694
E
m v
pu
pu
=
⋅ ²
29388
E
m v
pu
pu
=
⋅ ²
7200
E
m v
pu
pu
=
⋅ ²
14400
E
m v
pu
pu
=
⋅ ²
14694
E
m v
pu
pu
=
⋅ ²
29388
( )
( )
E
m m v v
m m
pu
pu pu
pu pu
=
⋅ ⋅ +
+
1 2 1 2
1 2
19930
²
( )
( )
E
m m v v
m m
pu
pu pu
pu pu
=
⋅ ⋅ +
+
1 2 1 2
1 2
29388
²
( )
( )
E
m m v v
m m
pu
pu pu
pu pu
=
⋅ ⋅ +
+
1 2 1 2
1 2
14400
²
( )
( )
E
m m v v
m m
pu
pu pu
pu pu
=
⋅ ⋅ +
+
1 2 1 2
1 2
29388
²
m
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10. 10
Select buffers using the diagrams on pages 6 to 9 and read off the buffer final force.
The buffer length must only be utilized to approx. 65 % of its capacity for cellular
plastic buffers, and only up to approx. 50 % for rubber buffers. For greater capacity
go up to the next size of buffer. With two cranes on one track, all buffers on the sides
of the cranes facing each other must be identical.
• crane, flexibly attached load
• wheel loads: R1
= 1935 kg, R2
= 2485 kg
• long travel speed v = 40 m/min
• travel against a rigid stop without a counterpart buffer and without a reduction in
speed.
Diagram 3 (see 3.3 and 4.3)
Flexibility
range
s
[mm]
Energy Epu
[Nm] Buffer final forces Fpu
[kN]
Flexibility
range
s
[mm]
10
v = 120 m/min
v = 60 m/min
20
30
40
50
60
70
80
90
1600 1200 800 400
73
v = 60 m/min
v = 120 m/min
20 40 60 80
709 18
41132244.eps
3.3 Calculate the buffer final forces
Fpu
, select buffer size
4 Calculation example
for cellular plastic
buffers
4.1 Calculate mpu
as in 3.1
4.2 Calculate Epu
as in table 3.2
4.3 Find Fpu
, select buffer size
m R R kg kg kg
pu = + = + =
1 2 1935 2485 4420
Selected: Size DPZ 130
Fpu
as in diagram 3
flexibility range s = 73 mm < 65 % of (l1 = 120) = 78 mm
buffer final forces = 18 kN
Order details:
DPZ 130 cellular plastic buffer, part no. 811 524 44
E
m v
Nm
pu
pu
=
⋅
=
⋅
=
² ²
9965
4420 40
9965
709
stationary stationary

11. 11
Selected: Size DPG 80
Fpu
as in diagram 7
flexibility range s = 35 mm < 50 % of (l1 = 84) = 42 mm
buffer final forces = 23,5 kN
Order details:
DPG 80 rubber buffer, part no. 811 017 44
Diagram 7 (see 3.3 and 5.3)
Flexibility
range
s
[mm]
Energy Epu
[Nm] Buffer final forces Fpu
[kN]
Flexibility
range
s
[mm]
10
20
30
40
400
500 300 100
200
355
35
41138244.eps
10 30
20
23,5
41826144.eps
5 Calculation example
for rubber buffers
5.1 Calculate mpu
as in 3.1
5.2 Calculate Epu
as in table 3.2 E
m v
Nm
pu
pu
=
⋅
=
⋅
=
² ²
19930
4420 40
19930
355
5.3 Find Fpu
, select buffer size
• crane, flexibly attached load
• wheel loads: R1
= 1935 kg, R2
= 2485 kg
• long travel speed v = 40 m/min
• travel against a stop with a counterpart buffer and without a reduction in speed.
m R R kg kg kg
pu = + = + =
1 2 1935 2485 4420

12. 12
Reproduction in whole or in part only with prior consent of Mannesmann Dematic AG, D-58286 Wetter
Printed
in
Germany
MBR/0199/5H
Subject to alteration
• crane, flexibly attached load
• wheel loads: R1
= 1935 kg, R2
= 2485 kg
• long travel speed v = 40 m/min
• travel against a rigid stop without a counterpart buffer and without a reduction in
speed.
as in diagram 11
with Mpu
= 4420 kg and
v = 34 m/min (85 % of nominal travel speed according to DIN 15 018)
Selected:Size DPH 80
stroke: 76 mm
buffer final forces = 11,2 kN
Order details:
DPH 80 hydraulic buffer, part no. 811 296 44
Diagram 11 (see 3.3 and 6.3)
41132044.eps 41132144.eps
709
300 600
1000
1250 2300 4000 6300 10000
8000
5000
10
50
100
500
1000
5000
20
40
80
100
60
200
31,5
12,5
v [m/min]
4420
DPH 25
DPH 80
DPH 350
34
DPH 7
10
50
100
500
1000
5000
0,5
1
5
10
709
11,2
DPH 7
DPH 25
DPH 80
DPH 350
Energy
Epu
[Nm]
Mass
mpu
[kg]
Energy
Epu
[Nm]
Final
forces
Fpu
[kN]
6 Calculation example
for hydraulic buffers
6.1 Calculate mpu
as in 3.1
6.2 Calculate Epu
as in table 3.2 E
m v
Nm
pu
pu
=
⋅
=
⋅
=
²
9965
4420 40²
9965
709
m R R kg kg kg
pu = + = + =
1 2 1935 2485 4420
6.3 Find Fpu
, select buffer size