1. health and fitness
2. disease
3. diabetes

M ASCHINENBAU GMBH
MECHANISED ROOF SUPPORT CONTROL
SYSTEMS AND HYDRAULIC COMPONENTS
Page 02 | Mechanised roof supports control systems and hydraulic components
WELCOME TO
OHE MASCHINENBAU GMBH
ОHЕ Maschinenbau GmbH machinery company is situated in the ancient city of Hattingen, which
is located in the Ruhr industrial area – business and industrial centre of Germany. ОНЕ History
stems out of 1946 and the company has grown from small workshop to the most up-to-date
highly-technological engineering operation of the international level. ОНЕ trade mark has been
registered back in 1960.
These days we develop and manufacture hydraulic, electrohydraulic and pilot control systems with all auxiliary
hydraulic locks and valves, and also connectors and fixtures for high-pressure hoses.
ОНЕ trade mark is a sign of the long-term experience, guaranteed quality, reasonable price and longevity
of the products.
HISTORY
The company was founded by
german engineer Otto Hennlich
1946
1960
ОНЕ trade mark
was first registered
Development of pilot
control system
High pressure
hoses were developed
1987
1976
1986
Manufacture of the first 12
function direct control unit
Certification of
production to DIN
ISO 9001 standard
Certification of production to
АТЕХ standards
Production of
power hydraulics
1998
2005
2012
1995
Development of
electro- hydraulic
control unit
2003
Certification of
production to DIN EN
ISO standards
2009
Development of valve gear
system for low seam application
Mechanised roof supports control systems and hydraulic components | Page 05
OHE WORLDWIDE
OHE exports its products across the world. In addition to that we provide qualied servicing,
reconditioning, warantee and post-warrantee maintenance that allows to extend life
expectancy of the equipment and to save on investments. Miners from Germany, Czech Republic,
Poland, Slovakia, Hungary, Russia, Ukraine, China, Mexico, Vietnam and other countries trust us.
During the long history of operation OHE has won a reputation of reliable and trustworthy partner
and we value con` dence of our customers.
GERMANY
RUSSIA
CZECH REPUBLIC
SLOVAKIA
UKRAINE
VIETNAM
MEXICO
CHINA
POLAND
QUALITY CONTROL
ОНЕ products pass a multi-stage monitoring system of quality control
confirmed by certificates DIN EN ISO 9001:2008 and has equipment
application permits in underground mines, including dangerous on
gas and a dust. OHE’s electromagnetic valve have passed through
ATEX quality check and conforms to standards according to the
certificate ATEX - № 05/0255 issued by the experts for application in
explosive-prone areas of coal industry.
Page 06| Mechanised roof supports control systems and hydraulic components
MANUFACTURING
OHE’s products are manufactured according to the highest quality requirements on advanced
equipment, and existence of in-house design bureau and modern test rigs allows the
company to constantly improve and expand the range of its products.
The pilot control developed in 1987, still remains the most demanded product in valve gear market.
Application of CNC on lathes, automated multi-purpose processing centres allows the company to
manufacture reliable and high quality products.
During the latest years our manufacturing tools have been significantly upgraded and supplemented by the
following machine tools:
CNC processing centres with an
Longitudinal CNC lathes
inverse spindle, a drive of instruments
and shaft Y
CNC Lathes
7x Nakamura-Tome WT150 MMY
2x Nakamura-Tome WT250 MMY
2x Nakamura-Tome Super NTJ
1x Nakamura-Tome SC250
2x Nakamura TW-20
2x
1x
2x
2x
Horizontal CNC processing centres
with a palette pool and several
devices of automatic changeover of
instruments
Vertical processing centres
Centreless grinder
3x
2x
1x
1x
1x
1x
1x
1x
Mori Seiki NH 5000 DCG
Mazak HCN 5000
Heller MC16
Mazak H400
Steinel BZ20
Citizen M20
Citizen M16
Mazak VCN 410A
Chiron FZ12 Magnum
Mazak QT6
Mazak QT8
ESTARTA 301 MV
Flange grinder
Band-saw machine tool
Milling machine tool
1x
1x
1x
1x
1x
1x
Elb SW 624 VA II
HBP513A
HBP530A
LPS40-T1500
Jaespa W320AZ/P
TOS OLOMOUC FGV 32
Mechanised roof supports control systems and hydraulic components | Page 07
Regular investments into equipment and tools allow OHE to increase output every year, to raise
quality, and also to optimise expenditure in order to manufacture competitive products.
Thanks to the modern technologies and equipment the path from designer idea to its implementation in
manufacture is reduced to a minimum.
Page 08 | Mechanised roof supports control systems and hydraulic components
PRODUCTS IN APPLICATION
Our company products is used in underground coal mines across the world. When people talk about safety of
miners, about high demands to technical equipment – they talk about OHE hydraulics. Together with roof
supports manufacturers we create a safe working atmosphere for safe coal mining.
Auxillary valve
Check-valve
Yield valve etc.
Auxillary Valve
Check-Valve,Yield Valve
Manifold
Pilot control
Supply Line
Mechanised roof supports control systems and hydraulic components | Page 09
The use of spool-type valves HV-4 in the command block as pilot valves has considerably improved
miners’ work. Since this valve has good flow performance, such operations as control of the canopy or
others low flow processes are carried out by these valves directly. Control of legs, advance ram and other
rams of the roof support, requiring high flow are carried out through running valves DN12 and DN 20, set in the
control block that has allowed to reduce considerably the time required for supporting of mining space.
Use of „Arlon“ made saddles in the cartridges has allowed to raise reliability, longevity and maintainability of
valves.
Electrohydraulic control allows to fully automate the process of roof support control and at the same time to
eliminate human errors. Use of electrohydraulic controls allows a step operation of any roof support in the face
to be carried out as well as automatic control of a single support or a group of supports in a face, and, with the
use of necessary transmitters completely automate the process of coal mining.
Page 10 | Mechanised roof supports control systems and hydraulic components
ELECTROHYDRAULIC
CONTROL UNIT
The electrohydraulic control unit SEU-OHE
The electrohydraulic control units SEU- OHE are special design to
operate underground longwall equipment (Roof Support, Shearer;
Road Header and Continous Miner) with HFA emulsion. The
Type:
Electrohydraulic control with 3/2- way valve cartridge
size DN 10 to DN 20
No. of functions:
2 to 24 functions
Мaterial:
Corrosion resistance (Stainless Steel,Bronze)
impuls to the 4/3 – or 3/2 Way Pilot Valve which will send a hyd-
System pressure:
350 bar
raulic impuls to the 3/2 Way Valve Cartridge in the main valve gear.
Size:
DN10, DN12, DN19
Pressure line –
Return line:
DN25 and DN31
Control- System SEU- OHE is equipped with 4/3 – or 3/2 Way Pilot
Valves and 3/2 Way Valve Cartridges “Size DN10/4, DN10, DN12
and DN20”. The operation will be initiated via an electromagnetic
During assembly or repair the control system can be operated
manually.
The electrohydraulic control unit SEU-OHE 8...12
The electrohydraulic control units SЕU- OHE 8..12 is special design
for low seam operations with small roof supports and limited room.
(Plow- Low Seam Shearer installations)
Тype:
Electrohydraulic control with 3/2- way valve cartridge
size DN 10 and/or DN 12
No. of functions:
2 to 12 functions
Мaterial:
Corrosion resistance (Stainless Steel,Bronze)
System pressure:
350 bar
Size:
DN10, DN12
Pressure line –
Return line:
DN20 and DN25
Mechanised roof supports control systems and hydraulic components | Page 11
PILOT CONTROL
Pilot control SPU-OHE
The pilot control valve c/w multi- hose for individual application is
designed for roof support control, which operates unidirectional
Type:
Hydraulic pilot control with 3/2- way valve cartridge
from
the ,adjacent
It
means
that the support.
pilot and main control
are separate and located in the adjacent roof supports and are
No. of functions:
2 to 24 functions
Material:
Corrosion resistance
(Stainless Steel,Bronze)
System pressure:
350 bar
Size:
DN10, DN12, DN19
connected through the multi- hose.
Thus, the miners, operating the roof support, will always be in the
safe environment.
Pilot control unit
Main control unit
Multi-hose
Because of the superior flow
Due to a higher demand of flow for Legs,
Multi- hose is used to connect the auxiliary
characteristic the 4/3 directional control
DA-Rams or other cylinders the 4/3 direc-
unit with the main control. The outer
valve HV4 can be used for the direct con-
tional control valve HV4 can be used for
protection hose consists of high pressure
trol of small cylinders.
the pilot operation of the 3/2 directional
hoses DN3 and DN4. The number of high
control catridges with size DN 12 and/or
pressure hoses DN3 and DN4 shall match
DN20. The total numbers of function can
the number of control functions. Multi-
vary between 2 and 24 due to operation
hoses can be supplied in different lengths
demand.
and applications (straight, in the shape of
45º or combined).
Page 12 | Mechanised roof supports control systems and hydraulic components
PILOT CONTROL
Compact pilot control with multi-hose SPU-OHE
The compact control valve c/w multi- hose is designed for directional control. It is similar to the pilot control valve c/w multi- hose
Type:
Hydraulic compact pilot control with 3/2- way valve cartridge
for the roof support control, but the difference between these two
control valves, is that the compact pilot control valve system is
No. of functions:
2 to 24 functions
Material:
Corrosion resistance
(Stainless Steel,Bronze)
System pressure:
350 bar
Size:
DN10, DN12, DN19
incorporated all in one assembly block.
Similarly to pilot control valves for individual application, the compact pilot control valve provides a safe underground environment
for miners.
Pilot control for low seam application SPU-OHE
ОНЕ offers a wide range of control valves the SPU- OHE 8..12
specifically designed for roof supports for low seam operations. The
application of the control valve is very compact.
Type:
Hydraulic Pilot Control for loew seam application with 3/2- Way Valve
Cartridge.
No. of functions:
2 to 12 functions
Material:
Corrosion resistance
(Stainless Steel,Bronze)
System pressure::
350 bar
Size:
DN10, DN12, DN19
Mechanised roof supports control systems and hydraulic components | Page 13
PILOT CONTROL
Direct control valve SPU-OHE
The hydraulic control valve is designed for roof support control and
multifunctional operations.
Type:
Hydraulic direct control
It consists of the main steel body and at least one 4/3 directional
control valve HV4.
No. of functions:
2 to 8 functions
Material:
Corrosion resistance
(Stainless Steel,Bronze)
System pressure:
350 bar
Size:
DN10, DN12, DN19
Page 14 | Mechanised roof supports control systems and hydraulic components
PILOT OPERATED CHECK-VALVE
Pilot operated check-valves are able to allow free flow of fluid in one direction and to block the flow in the opposite direction.
Check-valves will be used for hydro-cylinder in roof-supports e.g. Leg, DA-Ram, Stabilizing-Cylinder etc.
Check-valves are designed and build to customer needs because of housing, port size and flow capacity in the
size of DN 10, DN 12 und DN 20. The valves are available as single-, twin- and double pilot operated check-valve.
Leg check-valve size DN10, DN12 and DN20
A1
Two different types of pilot operated check-valves:
A
Z1
Flange-mounted or inline-mounted.
A
Z3
P
A2
P
Z2
Z A
A
B
A1
A
PB
A2
PA
Mechanised roof supports control systems and hydraulic components | Page 15
PILOT OPERATED CHECK-VALVE
Variation of hydraulic schematic DN10, DN12 and DN20
A1
A
P
P
Z3
A2
A
A
Z1
Z
Z2
A
PZ
A1
A
Variation of hydraulic schematic DN10, DN12
P A PPAB PP BA P B
Z A Z A Z BA Z B Z B
P A P A P AP B P B P B
PBPB PB
PAPA PA
B1 B1 B1 A1 A1 A1
B1 B1 B1
A1A1 A1
A 2 A 2 A 2B 2 B 2 B 2
A 2 A 2 A 2B 2 B 2 B 2
A A A
B B B
Pilot operated check valve with integrated shuttle valve
PB P
PB
B2
B1
ZA
R
PP
B
A
Z
A
R
P
A
2/2 way valve cartridge size DN10, DN12 and DN20
A
Z
P
2/2 way valve cartridges will be used in check- valves to
control the hydro- cylinder of roof- supports. E.g. Leg; DA-Ram, Tilt
cylinder etc.
Page 16 | Mechanised roof supports control systems and hydraulic components
POWER AND AUXILLIARY VALVES
3/2 way valve cartridge
DN10
DN20
DN12
The latest OHE way valve cartridge technology with the size DN
10/4, DN 10, DN12, DN15 and DN20 are the heart of our hydraulic
valve gears. All cartridges are comply with the requirements of largevolume legs (props) and cylinders and allow maximum flow (Q) at
lowest pressure drop (δp). All our valve cartridges are type tested and
A
R
P
approved to EN 1804.3
3/2 way solenoid valve
P
R
A
3/2 way solenoid valve is used as a pilot valve in the system to
transform electric pulse into a hydraulic control pulse
Type:
3/2 way valve cartridge with ball saddle DN2
Flow:
1,5 l/min
Material:
all parts are manufactured from corrosion
resistant materials
Working fluid:
hydraulic fluid with a minimum content of
the concentrate of 1.5-2%
Working pressure
max.
400 bar
Connector:
built- in 4- way connector
Voltage:
12 V
Mechanised roof supports control systems and hydraulic components | Page 17
POWER AND AUXILLIARY VALVES
4/3 way valve as solenoid valve
B
Solenoid- controlled valves are used for the pilot control of hydraulically driven directional control valves, and this is why they are called
R P
A
Type:
4/3 way- valve as solenoid valve
solenoid pilot valves or solenoid valve. In case of maintenance,
repair or power down, the 4/3 way valve can be operated manually.
Flow:
1.5 l/min
Material:
all parts are manufactured from corrosion
resistant materials
Working fluid:
hydraulic fluid with a minimum content of
the concentrate of 1.5-2%
Working pressure
max.
400 bar
Connector:
Built- in 4- way connector
Voltage:
12 V
4/3 way valve HV4
A
P R
B
A
P R
B
The 4/3 way valve HV4 is allowing direct action of most auxillary
functions and can also be used as direct pilot control to the 3/2
Type:
Way valve
Way Valve cartridges DN10/4, DN10, DN12, DN15 and DN20 in
the Main Valve Gear.
Flow:
25 l/min
Material:
Corrosion resistance
(Stainless Steel)
System pressure:
350 bar
The functionality of the HV4 can be customized.
Page 18 | Mechanised roof supports control systems and hydraulic components
YIELD VALVE WITH
OPEN SPRING HOUSING
Yield valves are used to limit the pressure in hydraulic circuits (cylinders or supply lines) to a specified maximum value
(called setting pressure of the yield valve). The OHE yield valves are mechanical springloaded valves. The fluid will
be released either into the environment/atmosphere or into the return line
.
Yield valve with open spring housing | OHE- № 210097
Type:
Springloaded yield valve
Material:
Corrosion resistance (Stainless Steel)
Port size:
Nipple DN10
Yield pressure:
300- 530 bar (30- 53MPa)
Flow:
125 l/min
Dimension:
D = 30 mm; L = 117 mm
Yield valve with open spring housing | OHE- № 210162
Type:
Springloaded yield valve
Material:
Corrosion resistance (Stainless Steel)
Port size:
Nipple DN10
Yield pressure:
300- 530 bar (30- 53MPa)
Flow:
125 l/min
Dimension:
D = 30 mm; L = 117 mm
Yield valve with open spring housing | OHE- № 210120
Type:
Springloaded yield valve
Material:
Corrosion resistance (Stainless Steel)
Port size:
Nipple DN10; DN12; KJ13; DN20;
DN20/25
Yield pressure:
300- 530 bar (30- 53MPa)
Flow:
300 l/min
Dimension:
D = 46 mm; L = 215 mm
Mechanised roof supports control systems and hydraulic components | Page 19
YIELD VALVE WITH
OPEN SPRING HOUSING
Yield valve with open spring housing | OHE- № 210604
Type:
Springloaded yield valve
Material:
Corrosion resistance (Stainless Steel)
Port size:
Nipple DN10 ; DN12; DN 20; DN20/25
Yield pressure:
100- 530 bar (30- 53MPa)
Flow:
250 l/min
Dimension:
D = 42 mm; L = 132 mm
Yield valve with open spring housing | OHE- № 210660
Type:
Springloaded yield valve
Material:
Corrosion resistance (Stainless Steel)
Port size:
Nipple DN10; DN12; DN20; DN20/25
Yield pressure:
100- 530 bar (30- 53MPa)
Flow:
400 l/min
Dimension:
D = 55 mm; L = 121-190 mm
Yield valve with open spring housing | OHE- № 210528
Type:
Springloaded yield valve
Material:
Corrosion resistance (Stainless Steel)
Port size:
Thread/Nipple M40x2; M42x1,5;
DN20/25; DN32
Yield pressure:
300- 530 bar (30- 53MPa)
Flow:
1000 l/min
Dimension:
D = 55 mm; L = 232-273 mm
Page 20
| Mechanised roof supports control systems and hydraulic components
AUXILLIARY VALVES AND
HYDRAULIC COMPONENTS
Water valves, check valves, filters, spray jets, etc.
Ball valve
2/2 way ball valve. This valve is used for cutting off the flow of
working fluid from the hydraulic mains.
Type:
2/2- way ball valve
Port size:
nipple valve/ coupling DN10, 12, 19, 25, 31
Leg bottom valve
Used in several stage (telescopic) legs. Bottom valve of the hydraulic leg prevent sharp changes in the load of several stage legs.
Type:
spring valve with cone saddle
Material:
all parts are manufactured from corrosion resistant materials
Mechanised roof supports control systems and hydraulic components | Page 21
AUXILLIARY VALVES AND
HYDRAULIC COMPONENTS
Pressure - Gauge
The gauge is a measuring instrument and is used for observation
and control of pressure levels in hydraulic systems.
Type:
Gauge with tube springs
Port:
Nippel DN10
Size:
Diameter 50 mm; length 91 mm
Working
pressure:
0- 600 bar
In-line filter
In- line filter guards the hydraulic fluid from contamination. Filters
are manufactured in two variants: the coupling- nipple and
Type:
Filter
coupling- coupling.
Unit:
25, 40, 80 µm
Material:
all parts are manufactured from corrosion resistant materials
Connector:
Nippel/coupling or coupling/coupling
DN10, 12, 19, 25, 31
Working
pressure:
max. 350 bar (35 MPa)
Differential
pressure:
max. 315 bar (31 MPa)
Page 22 | Mechanised roof supports control systems and hydraulic components
AUXILLIARY VALVES AND
HYDRAULIC COMPONENTS
Water valves, check valves, filters, spray jets, etc.
Manual double backflash filter
Double backflush filter DN25 is used to filter water or hydraulic
fluid.
Type:
Cell filter DN25, with lock mechanism
Fliter element:
25 µm
Material:
all parts are manufactured from
corrosion resistant materials
Pressure port P:
DN25
Return port R:
DN12
Flow:
up to 800 l/min
Working pressure:
max. 350 bar (35 MPa)
Spray block with spray nozzle / jet
Spray jet ensures a faultless irrigation in near- face and goaf space
of dangerous dust.
Type:
Spray jet
Material:
Все части выполнены из материалов,
не поддающихся коррозии
Nominal
pressure:
350 bar (35 MPa)
Connector:
Coupling DN 10
Mechanised roof supports control systems and hydraulic components | Page 23
AUXILLIARY VALVES AND
HYDRAULIC COMPONENTS
In-line check valve
In- line check valve is assembled in the pressure mains. The valve
ensures the flow of working fluid in one direction and locks it in
Type:
Valve with ball saddle
other direction.
Material:
all parts are manufactured from corrosion
resistant materials
Working pressure:
350 bar (35 MPa)
Connector:
from DN10 to DN31
Connector type:
Coupling/nippel
Working pressure:
from 300 to 530 bar
Flow restrictor valve (DN10)
Intended for smooth (impact free) advance of roof supports
Type:
Flow restrictor valves
Material:
all parts are manufactured from corrosion
resistant materials
Working pressure:
350 bar (35 MPa)
Connector:
from DN10 to DN31
Connector type:
Coupling/nipple
Working pressure:
from 300 to 530 bar
Page 24
| Mechanised roof supports control systems and hydraulic components
AUXILLIARY VALVES AND
HYDRAULIC COMPONENTS
Water valves, check valves, filters, spray jets, etc.
Two-way valves
Switching valves with logic function of “or” have one inline and two
outlines. When the pressure to one of lines is applied it is connec-
Type:
Two- way valve
ted to the exit line. The second line remains closed.
Material:
all parts are manufactured from corrosion
resistant materials
Working pressure:
350 Bar (35 MPa)
Connector:
from DN10 to DN20
Connector type:
Coupling/nippel
Working pressure:
from 300 to 530 bar
Manifold
To distribute a flow of hydraulic fluid to several consumers or for its
redirection
Type:
Manifold
Material:
all parts are manufactured from corrosion
resistant materials
Working pressure:
350 Bar (35 MPa)
Connector:
from DN10 to DN40
Connector type:
Coupling
Working pressure:
from 300 to 530 bar
Mechanised roof supports control systems and hydraulic components | Page 25
OIL HYDRAULIC
Electrohydraulic control for Road-Header and Shearer
These kind of control systems are special design to control the hydraulic motor of Road-Header or Shearer.
The hydraulic system can be operated with mineral oil with a viscosity between 20 … 50 St and with a variable
pressure system.
Dump-valve for the pump
4 supply lines, single return line
1 supply line
Technical Data:
Pressure in the pump- line :
8... 210 bar
Pressure in the relief circuit of the pumpline :
8...12 bar
Pressure in the return- line:
0...10 bar
Temperature of the fluid:
+ 5 ...+ 80°С
Displacement „flow“:
20 ...100 l/min.
Electrohydraulic control unit
Electrohydraulic control unit.
With 2 to 24 functions and
cartridge size between DN 10
and DN 20 due to operation
demand.
Type:
Electrohydraulic control with 3/2- way valve cartridge
size DN 10 to DN 20
No. of functions:
2 to 24 functions
Мaterial:
Corrosion resistance (Stainless Steel,Bronze)
System pressure:
350 bar
Port size:
DN10, DN12, DN19
Pressure line –
Return line:
DN25 and DN31
Electrohydraulic flow control unit
This valve has been design for
~ 100% (47,5 l/min.)
a 3 stage adjustment control of
~ 75% (25 l/min.)
the fluid
~ 30% (12,5 l/min.)
Pressure filter with sensor
Max. flow 100 l /min.
This filter will control the pressure before and after the filter.
M ASCHINENBAU GMBH
WORLDWIDE SERVICE
GERMANY
RUSSIA
UKRAINE
OHE MASHINENBAU GMBH
LTD. «OHE-TECHNOLOGY»
LTD. «OHE-UKRAINE»
HENRICHS-ALLEE 8
652700, KISELOVSK, KEMEROVO REGION.
51400, PAVLOGRAD,
45527 HATTINGEN
ST. ALEISKAY, 15
DNIPROPETROVSK REGION
ТЕЛ. + 49 (0) 2324 56 44 0
TEL. / FAX: (38 464) 05 02 12
ST. SVERDLOV, 142
ФАКС: + 49 (0) 2324 56 44 44
E-MAIL: INFO@OHE.DE
WWW.OHE.DE
E-MAIL: OHE-SIBIR@RAMBLER.RU
TEL: +380 50 478 77 80
E-MAIL: OHE-UKRAINE@UKR.NET
WWW.OHE-UKRAINE.COM
CHINA
CZECH REPUBLIC
POLAND
OHE (BEIJING) MINING ELECTRO-HYDRAULIC
HENNLICH S.R.O.
CONTROL TECHNOLOGY LTD.
PALHANECK
Á 17
PALHANECKA
HENNLICH S P. Z.O.O.
ST. PADEREWSKIEGO, 25
NO.C535, F5, CBD INTERNATIONAL MANSION,
74707 OPAVA-JAKTAR
41-810 ZABRZE
NO.16, YONGANDONGLI, CHAOYANG
TEL: + 420 553 613 810
TEL: + 48 32 37 66 700
BEIJING, P.R. CHINA
FAX: + 420 553 613 811
E-MAIL: OPAVA@HENNLICH.CZ
FAX: + 48 32 37 66 708
E-MAIL: HENNLICH@HENNLICH.PL