GB1005014A - Improvements in or relating to piston and cylinder assemblies for use in mine working machines - Google Patents
Improvements in or relating to piston and cylinder assemblies for use in mine working machinesInfo
- Publication number
- GB1005014A GB1005014A GB1899262A GB1899262A GB1005014A GB 1005014 A GB1005014 A GB 1005014A GB 1899262 A GB1899262 A GB 1899262A GB 1899262 A GB1899262 A GB 1899262A GB 1005014 A GB1005014 A GB 1005014A
- Authority
- GB
- United Kingdom
- Prior art keywords
- conduit
- piston
- fluid
- ram
- area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000000712 assembly Effects 0.000 title 1
- 238000000429 assembly Methods 0.000 title 1
- 239000012530 fluid Substances 0.000 abstract 11
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
- F15B11/036—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of servomotors having a plurality of working chambers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/08—Guiding the machine
- E21C35/12—Guiding the machine along a conveyor for the cut material
- E21C35/14—Equipment for pressing the conveyor towards the working face
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7055—Linear output members having more than two chambers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Actuator (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
1,005,014. Rams for advancing mine face conveyers. H. BEUKENBERG, H. BEUKENBERG and K. BEUKENBERG, [trading as MASCHINENFABRIK GLUCK AUF GUNTHER KLERNER]. May 17, 1962 [Jan. 26, 1962], No. 18992/62. Heading B8J. [Also in Division F1] A double-acting hydraulic ram for advancing a conveyer or other machine towards a mine face is provided with alternative fluid conduits whereby at least two alternative effective piston pressure surfaces for extending the ram are provided. In the embodiment shown in Fig. 1, the cylinder 1 is provided with detachable end covers 2, 3 and contains a piston 4 having a tubular piston rod 5. The piston 4 has a central axial bore 6 lined with a guide sleeve in which a fluid pressure conduit 7, detachably screwed into a bore 8 in the end cover 3, is guided. The cover 3 accommodates control means for manually controlling the flow of fluid to the cylinder chambers through conduits 10, 12. To extend the ram, fluid under pressure is fed through the conduit 10 and the chamber 15 communicates through a bore 9 in the piston rod 5 and the conduit 7 to the return conduit 12 so that the effective pressure surface area is x<SP>1</SP>. If the available fluid pressure is increased, the fluid may be fed to both chambers 11, 15 so that the effective pressure area for extending the ram is x<SP>1</SP>-V. If the ram is to be used with considerably higher fluid pressure, a second fluid conduit 16, Fig. 3, is connected between a supply conduit 18 and a conduit 17, conduit 7 is connected to a return conduit and the bore 9 is plugged. To extend the ram pressure fluid is fed through conduit 10 to the chamber 11 and the effective piston area is x<SP>3</SP>. The effective piston area may be further reduced to the cross-sectional area of the conduit 7 by feeding fluid pressure to the chambers 11, 15 and the interior of the piston rod 5, Fig. 4 (not shown). In a further modification, Fig. 5 (not shown), the conduit 7 is removed, the bore 6 in the piston and the bore 9 in the piston rod are plugged so that the effective piston area for extending the ram is the total piston area. This area may be reduced by V by applying fluid pressure to the chamber 15. The conduits 7 may be changed for conduits of different cross-sectional areas.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM0051581 | 1962-01-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1005014A true GB1005014A (en) | 1965-09-22 |
Family
ID=7307171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1899262A Expired GB1005014A (en) | 1962-01-26 | 1962-05-17 | Improvements in or relating to piston and cylinder assemblies for use in mine working machines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1005014A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2199618A (en) * | 1987-01-08 | 1988-07-13 | Gen Motors Corp | Hydraulic actuator |
| FR2753751A1 (en) * | 1996-09-23 | 1998-03-27 | Chabas & Besson Hydraulique Ma | SINGLE ACTING HYDRAULIC CYLINDER DEVICE |
| GB2325455A (en) * | 1998-01-10 | 1998-11-25 | Anthony Robson Commercial Sale | Lifting device |
-
1962
- 1962-05-17 GB GB1899262A patent/GB1005014A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2199618A (en) * | 1987-01-08 | 1988-07-13 | Gen Motors Corp | Hydraulic actuator |
| GB2199618B (en) * | 1987-01-08 | 1991-01-02 | Gen Motors Corp | Hydraulic actuator system |
| FR2753751A1 (en) * | 1996-09-23 | 1998-03-27 | Chabas & Besson Hydraulique Ma | SINGLE ACTING HYDRAULIC CYLINDER DEVICE |
| GB2325455A (en) * | 1998-01-10 | 1998-11-25 | Anthony Robson Commercial Sale | Lifting device |
| GB2325455B (en) * | 1998-01-10 | 1999-05-19 | Anthony Robson Commercial Sale | Lifting device |
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