AU9133898A - Winning apparatus for winning strata - Google Patents
Winning apparatus for winning strata Download PDFInfo
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- AU9133898A AU9133898A AU91338/98A AU9133898A AU9133898A AU 9133898 A AU9133898 A AU 9133898A AU 91338/98 A AU91338/98 A AU 91338/98A AU 9133898 A AU9133898 A AU 9133898A AU 9133898 A AU9133898 A AU 9133898A
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- Australia
- Prior art keywords
- duct
- cylinder
- hydraulic
- jib
- heavy weight
- Prior art date
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- Abandoned
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- 239000010720 hydraulic oil Substances 0.000 claims description 39
- 230000014759 maintenance of location Effects 0.000 claims description 22
- 239000011435 rock Substances 0.000 claims description 19
- 239000002689 soil Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000003245 coal Substances 0.000 claims description 3
- 239000002360 explosive Substances 0.000 claims description 3
- 238000005065 mining Methods 0.000 claims description 3
- 206010011416 Croup infectious Diseases 0.000 claims description 2
- 102220056353 rs730880136 Human genes 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
- E02F3/188—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with the axis being horizontal and transverse to the direction of travel
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C47/00—Machines for obtaining or the removal of materials in open-pit mines
- E21C47/02—Machines for obtaining or the removal of materials in open-pit mines for coal, brown coal, or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
- Earth Drilling (AREA)
Description
AUSTRALIA
Patents Act 1990 KRUPP FOERDERTECHNIK GmbH
ORIGINAL
COMPLETE SPECIFICATION STANDARD PATENT Invention Title: Winning apparatus for winning strata The following statement is a full description of this invention including the best method of performing it known to us:- 1/i The invention relates to a winning apparatus for the non-explosive winning of strata such as overburden, coal and the like, composed of a support vehicle, preferably a crawler vehicle and a bucket wheel with revolving cutting edges, the support vehicle being provided with operating hydraulics including at least one hydraulic pump and a plurality of hydraulic cylinders, the bucket wheel being optionally composed of a plurality of cutting wheels, arranged side by side, and wherein the winning apparatus includes a retention means which prevents the formation of or provides the retention of oversize rock slabs soil or rock lumps released by the bucket wheel.
(0 During the winning of strata by means of bucket wheels fitted with cutting edges, the formation of relatively large sized soil or rock lumps may occur which may have dimensions of up to 60 x 100 x 150 cm. Such soil or rock lumps may result in blockage of the hydraulic system of the winning apparatus and may cause substantial damage to the winning apparatus.
In known soil processing apparatus used for processing soil deposits and in which likewise there exists a risk of the formation of relatively large soil or rock lumps, means are provided which retain, at least partially, the soil material picked up by the blades.
In a known apparatus which serves for processing forest soils, a flap is provided in the upper region of the crusher roller, fitted to the apparatus, on which upwardly flung wood detritus or the like is intercepted by the impact and recycled to the operating region of the crushing roller (DE 88 12 484 Ul). However, in this case it is possible that relatively large soil lumps become locked between the flap and the crushing roller which may result in ,2S substantial damage to the apparatus or to the crushing roller.
In another known apparatus for processing soils, a combined crushing and shrub clearing apparatus (FR 2 607 350 Al), there is provided for predetermining the cutting depth of the blades on the one side of the apparatus a level control roller and on the other side a levelling plate. In this context, the positioning level of the levelling roller which is pivotal about an axis, can be adjusted incrementally. For this purpose, a template is provided comprising a plurality of holes. Through one of the holes a pin, which passes through the pivoting arm of the levelling roller, is inserted so that the level adjustment of the levelling roller is determined by the selection of that hole in the template into which the pin has been inserted. The levelling roller is neither intended nor suitable for the retention of soil material released by the blades.
It is an object of the invention to provide a winning apparatus in which the retention device 1O which retains those slabs which are picked up by the bucket wheel and which are too large, is so designed that the formation of oversize slabs is not possible or that at least damage to the winning apparatus by oversize rock slabs is avoided.
This object is attained in a winning apparatus of the type referred to in the introduction in that the retention device for the retention of oversize rock slabs picked up by the bucket wheel comprises at least one heavy weight body which in rolling and/or sliding engagement rests directly on the surface of the ground to be excavated, that the heavy weight body is provided at an adjustable distance preceding the cutting edges of the bucket wheel based on the direction of movement of the winning apparatus that the heavy weight body is fixed to the support vehicle by way of a hinged jib, the heavy weight body being fitted to the one end of the jib whereas the jib at its opposite end is hinged to the support vehicle, D- and that one end each of two hydraulic cylinders, connected to the operating hydraulics of the support vehicle, is linked to the hinged jib, their opposite ends being fitted to the support vehicle.
By appropriate setting of the distance between the heavy weight body and the cutting lia edges of the bucket wheel, the lump size of the extracted rock slabs is predetermined.
All unevenness of the ground is levelled out by the inherent weight of the heavy weight body due to the fitting of the heavy weight body to the winning apparatus according to the invention by means of a hinged jib.
Due to the fact that in the winning apparatus according to the invention only a relatively small gap is provided between the cutting edges of the bucket wheel and the heavy weight body, the levering out of oversize rock slabs is prevented. It is possible only for slabs of such size to be broken out as may pass between the cutting edges of the bucket wheel and the heavy weight body.
Whenever the bucket wheel of the winning apparatus hits an oversize rock lump or an oversize frozen soil lump, this results in a lifting of the heavy weight body. This causes an increase in pressure on the hydraulic cylinder and thereby a crushing of the soil or rock lump by the bucket wheel. The extracted slabs accordingly are given a lump size which 1 meets the requirements of the conveyor belt. Accordingly, a downstream additional crusher, in order to make possible the subsequent belt conveyance of the extracted strata lumps, is thereby rendered redundant.
Appropriately, the heavy weight body is formed by at least one roller. A roller is .O particularly well equipped to adapt to the prevailing ground conditions. It is also possible for the surface of the roller to be profiled.
In a further development of the inventive concept, the rollers constituting the heavy weight body are mounted displaceably in such a manner that they can perform a transverse -b inclination. In this manner the adaptability of the rollers to the surface of the ground to be excavated is increased substantially.
In a further development of the inventive concept, at least one sliding element is provided between the bucket wheel provided with cutting edges and the heavy weight body, such %c sliding element resting directly on the surface of the ground to be excavated. In this manner the lump size of the excavated rock slabs can be kept very small.
A further manner of attaining the object stated resides in that the retention means for retaining the oversized rock slabs picked up by the bucket wheel comprises at least one heavy weight body, arranged at a slight distance above the ground to be excavated, that the heavy weight body is arranged at an adjustable distance from the cutting edges of the bucket wheel based on the direction of movement of the winning apparatus that the heavy weight body is fitted to the support vehicle by way of a hinged jib, the heavy weight body being fitted to the one end of the jib, whereas the jib at its o0 opposite end is hinged to the support vehicle, and that to the hinged jib one end of each of two hydraulic cylinders, connected to the operating hydraulics of the support vehicle, is linked, the other end of each of which is fitted to the support vehicle.
1 The maintenance of the distance of the heavy weight body above the ground to be excavated may be effected by conventional technical means, for example, by means of a trolley arranged below the heavy weight body, having wheels which in the vertical direction appropriately extend beyond the heavy weight body. In order to ensure the maintenance of the distance of the heavy weight body from the ground to be excavated in S a particularly simple manner, an appropriate sensor is fitted to the jib in accordance with a further development of the inventive concept.
In order to set the distance between the heavy weight body and the cutting edges of the bucket wheel, at least one cylinder and/or at least one spindle is provided. Such adjustment S means are particularly simple.
A preferred embodiment of the winning apparatus according to the invention comprises the following integers that the hinged jib forms part of a four-fold articulated frame, J'o that two articulation points of the four-fold articulated frame are provided at the ends of the hinged jib and the two remaining articulation points are provided at the ends of a beam, that an articulation point of the hinged jib provides a connection to the support vehicle and the other articulation point provides a connection to a lever provided between the articulated jib and the beam, at the lower end of which lever the heavy weight body is fitted, that an articulation point of the beam likewise establishes a connection to the support vehicle and the other articulation point likewise establishes a connection to the lever, and that the length of the beam is so dimensioned that during any vertical movement of the heavy weight body, its distance from the cutting edges of the to bucket wheel remains nearly constant.
Due to the design of the hinged jib as part of a four-fold articulated frame, the distance between the heavy weight body and the cutting edges of the bucket wheel is kept nearly constant for each cutting level.
The invention may furthermore be improved in that the hydraulic pump, drivable by an electric motor, is accommodated above a hydraulic oil vessel, that a duct passes from the hydraulic oil vessel by way of a further duct to the 2o cylinder space provided underneath the piston of each hydraulic cylinder, there being provided in the further duct a control valve and downstream thereof a springloaded non-return valve, that a duct passes from the hydraulic oil vessel by way of a further duct into the cylinder space which in the hydraulic cylinder lies above the piston, a control valve, 2G" preceded upstream by a throttle non-return valve being provided in the duct and a pressure switch being connected to the duct, that between the two ducts which pass from the hydraulic oil vessel to the cylinder spaces of the hydraulic cylinders, at least one connecting duct extends, a further control valve and a throttle non-return valve being provided in this connecting duct, and that a pressure switch is connected to that duct which passes from the hydraulic oil vessel to the cylinder space, provided underneath the piston of each hydraulic cylinder.
In this manner a proper control of the retention means is made possible.
In a process for the non-explosive winning of mining strata by means of the winning apparatus according to the invention, the following process steps are performed when changing the location of the winning apparatus: 0 in order to raise the jib, the control valve provided in that duct which passes to the cylinder space underneath the piston of each hydraulic cylinder, and the control valve provided in the duct passing from the hydraulic oil vessel into the cylinder space, provided above the piston of the hydraulic cylinder, are activated and the control valve provided in the connecting duct between the two ducts, passing from the hydraulic oil vessel to the cylinder spaces of the hydraulic cylinder, is left currentless, whilst, with the electric motor being switched on, the pressure switch provided in that duct which passes into the cylinder space provided above the piston of the hydraulic cylinder, is open, for holding the jib all three control valves are rendered currentless, whereas, if the electric motor is switched off, the pressure switch is open, and for lowering the jib, the control valve, provided in that duct which passes to the cylinder space underneath the piston of each hydraulic cylinder, and the control valve, provided in that duct which passes from the hydraulic oil vessel into the cylinder space above the piston of the hydraulic cylinder, is kept currentless and the third control valve is activated, whereas, if the electric motor is switched off, the pressure switch is open.
The process according to the invention makes it possible to raise the heavy weight body for the purpose of a locality change and to lower the heavy weight body after the locality change has been performed.
The process according to the invention may be further improved in that during the winning operation for raising the jib, that control valve which is provided in that duct which passes to the cylinder space provided underneath the piston of each hydraulic cylinder and the control valve provided in that duct which passes from the hydraulic oil vessel into the cylinder space provided above the piston of the hydraulic cylinder, are activated and the control valve provided in the connecting duct between the two ducts passing from the hydraulic oil vessel to the cylinder spaces of the hydraulic cylinders, is kept currentless, whereas, whilst the electric motor is switched on, the pressure switch connected to that duct which passes into the cylinder space, provided above the piston of the hydraulic cylinder, is kept open, for holding the jib all three control valves are switched to the currentless position, whereas, if the electric motor is switched off, the pressure switch is open, for rolling down the heavy weight body, the control valve provided in that duct which passes from the hydraulic oil vessel into the cylinder space above the piston of the hydraulic cylinder and the control valve provided in the connecting duct between the two ducts passing from the hydraulic oil vessel to the cylinder spaces of the hydraulic cylinder, are activated and the third control valve is rendered currentless, whereas, if the electric motor is switched off, the pressure switch is open, and for rolling down and simultaneously blocking the heavy weight body, all three control valves are switched currentless, whereas if the electric motor is switched off, the control valve provided in that duct which passes from the hydraulic oil vessel into the cylinder space provided above the piston of the hydraulic cylinder and that control valve which is provided in the connecting duct between the two ducts passing from the hydraulic oil vessel to the cylinder spaces of the hydraulic cylinder, are rendered currentless via the pressure switch.
The process according to the invention ensures a trouble-free control of the retention means.
A further integer of the process according to the invention resides in that the control is so designed that on attaining a predetermined maximum force at one of the hydraulic cylinders, it releases the other hydraulic cylinder, more particularly in that the valve combination, comprising that pressure limiting valve provided in the duct Spassing into the space above the piston of the one hydraulic cylinder as well as that pressure limiting valve and the constant throttle, provided in the ducts for the return flow of the hydraulic oil, performs the function of a pressure limiting valve and the cylinder of that one hydraulic cylinder is retracted, that substantially simultaneously, a further pressure limiting valve, provided in the 110 ducts for the return flow of the hydraulic oil is opened, causing the releasable, nonreturn valve downstream of the pressure limiting valve to be opened as well, and that as a result, the pressure limiting valve corresponding to the first mentioned pressure limiting valve and associated with the other hydraulic cylinder, is opened as well so that the other hydraulic cylinder can be retracted without appreciable 1 counter pressure.
In such a situation, the pressure-loaded hydraulic cylinder yields by way of its pressure limiting valve. In that manner overloading of the bucket wheel drive and of the steel structure as a whole of the winning apparatus is avoided.
a0 By opening the hydraulic circuit, a rapid yielding of the heavy weight body from the cutting region of the bucket wheel is made possible, thereby avoiding blocking of the bucket wheel before the maximum drive torque is attained. The result is that even if the bucket wheel encounters an indestructible rock body, the winning apparatus is not .2 damaged.
Electrical or electronic means may be used instead of the hydraulic control elements.
The invention will be further explained with reference to the drawing. There is shown in: Fig. 1 a winning apparatus in a side elevation; Fig. I a an alternative winning apparatus, likewise in a side elevation; Fig. 2 the winning apparatus illustrated in Fig. 1 in plan view; Fig. 3 a front elevation of the retention means of the winning apparatus; Fig. 4 a further front elevation showing only the retention means, the winning apparatus itself not being illustrated, with a different position of the rollers constituting the heavy weight body; aO Fig. 5 a second winning apparatus in side elevation; Fig. 6 a third winning apparatus in side elevation; Fig. 7 a fourth winning apparatus in side elevation; Fig. 8 a circuit diagram for the control of the retention means.
The winning apparatus 1 illustrated in Figs. 1 and 2, is composed of a support vehicle 2 O and bucket wheels 3 connected thereto, fitted with cutting edges 4. The winning apparatus 1 comprises a retention means 5 which, at least partly, retains the earth or rock lumps picked up by the bucket wheels 3. The retention means 5 comprises at least one heavy weight body 6 which in the working example takes the form of rollers which bears onto the surface of the ground to be excavated and which in relation to the direction of movement B of the winning apparatus 1 is ahead of the cutting edges 4 of the bucket wheels 3. The body 6 formed by rollers, is fitted to the support vehicle 2 by way of a hinged jib 7, the body 6 being fitted to one end of the jib 7, the opposite end of which is hinged to the support vehicle 2. In addition, one of the ends of two hydraulic cylinders 8 is linked to the jib 7, the hydraulic cylinders being connected to the operating hydraulics of the support vehicle 2 and their respective opposite ends being fitted to the support vehicle In the winning apparatus illustrated in Fig. I a, the retention device 5 comprises at least one heavy weight body fitted at a slight distance E above the ground to be excavated. In this embodiment as well, the heavy weight body 6' is arranged at an adjustable distance A ahead of the cutting edges 4 of the bucket wheel 3 based on the direction of movement B of the winning apparatus 1. Furthermore, in this case as well, the heavy weight body 6' is fitted by way of a hinged jib 7 to the support vehicle 2, the heavy weight body 6' being fitted to the one end of the jib 7, whereas the jib 7 at its opposite end is linked to the support vehicle 2, and one end of each of two hydraulic cylinders 8, connected to the operating hydraulics of the support vehicle 2, is linked to the hinged jib 7, whereas in each case the opposite end is fitted to the support vehicle 2. An appropriate sensor 16 is fitted to the jib 7 for the maintenance of the distance A of the heavy weight body 6' above the ground to be excavated.
As may be seen from Figs. 3 and 4, the rollers constituting the heavy weight body 6, are so mounted in a displaceable manner as to be able to perform a transverse inclination. For this purpose, each individual roller can be tilted by an angle W.
As shown in Fig. 5, cylinders 9 are provided in the embodiment illustrated for the adjustment of the distance A between the heavy weight body 6 and the cutting edges 4 of do the bucket wheels 3. In this context, the one end of the cylinder 9 is linked to the hinged jib 7 and the other end is linked to a toggle lever 10, the tilting axis of which passes through the hinged jib 7. The heavy weight body 6 formed by rollers, is fitted to the opposite end of the toggle lever 10. The movement, performable by the body 6, due to the toggle lever 10, is indicated by an arrow 11.
In the embodiment illustrated in Fig. 6, a sliding element 12 lying directly on the surface of the ground to be excavated, is provided between the bucket wheels 3 and the heavy weight body 6.
QO In Fig. 7 a winning apparatus is illustrated, in which the hinged jib 7 forms part of a fourfold articulated frame. In this context, two articulation points P1 and P2 are provided each on one end of the hinged jib 7 and two further articulation points P3 and P4 are provided each on one end of a beam 13. The articulation points P1 and P3 establish a connection with the support vehicle 2, whereas the articulation points P2 and P4 establish the connection with a lever 14. The heavy weight body 6 is fitted to the lower end of the lever 14. The movement which the body 6 in this case may perform due to the four-fold articulated frame is indicated by an arrow From the circuit diagram illustrated in Fig. 8, the control of the winning apparatus is apparent of which, for greater clarity, only the two hydraulic cylinders 8 are illustrated, which, for a better understanding of the control, are denoted as 8L and 8R. Each hydraulic lo cylinder 8L is associated with a control unit SL and each hydraulic cylinder 8R with a control unit SR. Since the two control units SL and SR correspond to one another, the following explanation relates only to the control unit SL. The control elements of the control unit SR are also not provided with reference numbers. Merely by way of example the reference number for the pressure liming valve S13R has been entered. The ducts which in the drawing have been shown by broken lines, represent the ducts for the return flow of the hydraulic oil or of leaking oil.
The control unit SL comprises a duct L1 which passes from a hydraulic oil vessel S1 to a duct L2, connected to the cylinder space below the piston of the hydraulic cylinder 8.
2o Above the hydraulic oil vessel S1, a hydraulic pump S3, drivable by an electric motor S2, is provided in the duct L1. In the duct L2 a control valve S4 is provided, followed downstream by a spring-loaded non-return valve S5. A pressure limiting valve S6 is provided in the duct L3 passing from the duct L1 back to the hydraulic oil vessel S 1.
c' A further duct L4 passes from the hydraulic oil vessel S I1 by way of a duct L5 into the cylinder space above the piston of the hydraulic cylinder 8. In the duct L4 a control valve S7 is provided, followed downstream by a throttle non-return valve S8. Furthermore, a pressure switch S9 is connected to the duct L4.
O Between the ducts L2 and L4 a connecting duct L6, comprising a control valve S10 and a throttle non-return valve S 11i, is provided as well as a further connecting duct L7, in which a pressure limiting valve S12 is provided.
12 To the end of the duct L5 remote from the hydraulic cylinder 8, a pressure limiting valve S13, for example a so-called cartridge valve, is provided.
Furthermore, in the ducts for the return flow of the hydraulic oil or leakage oil, pressure limiting valves S14 and S15 are provided and a deblockable, non-return valve S16 as well as constant throttles S17.
Claims (14)
1.1 the retention means for the retention of oversize rock slabs picked up by the bucket wheel .comprises at least one heavy weight body which in rolling and/or sliding relationship, lies directly on the surface of the ground to be excavated, 1.2 that the heavy weight body is arranged at an adjustable distance ahead of the cutting edges of the bucket wheel based on the direction of movement of the winning apparatus 1.3 that the heavy weight body is fitted by way of a hinged jib to the support vehicle the heavy weight body being fitted to one end of the jib the other end of the jib being hinged to the support vehicle 1.4 and that one end of each of two hydraulic cylinders connected to the operating hydraulics of the support vehicle is linked to the hinged jib their opposite ends each being fitted to the support vehicle
2. Winning apparatus according to claim 1, characterised in that the heavy weight body is formed by at least one roller.
3. Winning apparatus according to claim I or 2, characterised in that the rollers constituting the heavy weight body are mounted in such a displaceable manner that they can perform a transverse tilting.
4. Winning apparatus according to claim 1, 2 or 3, characterised in that at least one sliding element, lying directly on the surface of the ground to be excavated, is provided between the bucket wheel fitted with cutting edges and the heavy weight body IO 5. Winning apparatus for the explosionless winning of mining strata, such as overburden, coal and the like, comprising a support vehicle, preferably a crawler vehicle and a bucket wheel having revolving cutting edges, wherein the support vehicle is equipped with operating hydraulics, comprising at least one hydraulic pump and a plurality of hydraulic cylinders, the bucket wheel being optionally represented by a plurality of cutting wheels, arranged side-by-side, and wherein the winning apparatus comprises a retention means, adapted to prevent the formation of or provide the retention of oversize rock slabs soil or rock lumps released by the bucket wheel, characterised in that PO 5.1 the retention means for the retention of oversize rock slabs picked up by the bucket wheel comprises at least one heavy weight body which is provided at a slight distance above the ground to be excavated,
5.2 that the heavy weight body is arranged at an adjustable distance ahead of the cutting edges of the bucket wheel based on the direction of movement of the winning apparatus 5.3 that the heavy weight body is fitted by way of a hinged jib to the support vehicle the heavy weight body being fitted to one end of the jib ,the other end of the jib being hinged to the support vehicle 0 5.4 and that one end of each of two hydraulic cylinders connected to the operating hydraulics of the support vehicle is linked to the hinged jib their opposite ends each being fitted to the support vehicle
6. Winning apparatus according to claim 5, characterised in that for maintaining the distance of the heavy weight body above the ground to be excavated, an appropriate sensor is fitted to the jib t 5
7. Winning apparatus according to any one of claims 1 to 6, characterised in that for the setting of the distance between the heavy weight body and the cutting edges .of the bucket wheel at least one cylinder and/or at least one spindle is provided. \o 8. Winning apparatus according to any one of claims 1 to 7, characterised in that
8.1 the hinged jib forms part of a four-fold articulated frame, 8.2 that two articulation points of the four-fold articulated frame are provided at the ends of the hinged jib and the two other articulation points I are provided at the ends of a beam 8.3 that an articulation point of the hinged jib establishes a connection to the support vehicle .and the other articulation point establishes a connection to a lever provided between the hinged jib and the beam. to the lower end of which lever the heavy weight body is fitted, Wo 8.4 that an articulation point i of the beam likewise establishes a connection to the support vehicle and the other articulation point likewise establishes a connection to the lever and that the length of the beam is so dimensioned that for each up or down movement of the heavy weight body its distance from the 2 cutting edges of the bucket wheel remains approximately constant..
9. Winning apparatus according to any one of claims 1 to 8, characterised in that 9.1 the hydraulic pump drivable by an electric motor is fitted above a hydraulic oil vessel, 9.2 that a duct passes from the hydraulic oil vessel by way of a further duct to the cylinder space which in each hydraulic cylinder lies underneath the piston, a control valve and downstream thereof, a spring-loaded non-return valve being provided in the further duct 9.3 that a duct passes from the hydraulic oil vessel by way of a further duct into the cylinder space which in the hydraulic cylindei lies above the piston, a control valve preceded upstream by a throttle non-return valve being provided in the duct and a pressure switch being connected to the duct 9.4 that between the two ducts and passing from the hydraulic oil \k vessel to the cylinder spaces of the hydraulic cylinder at least one connecting duct extends, a further control valve and a throttle non-return valve being provided in the connecting duct and that a pressure switch is fitted to that duct which passes from the hydraulic oil vessel to the cylinder space, which in each hydraulic cylinder is below the piston. Process for the non-explosive winning of mining strata such as overburden, coal and the like by means of a winning apparatus according to claim 9, characterised in that when performing a change of location of the winning 0 apparatus
10.1 for raising the jib the control valve provided in that duct which passes to the cylinder space, which in each hydraulic cylinder is below the piston and the control valve which is provided in that duct Swhich passes from the hydraulic oil vessel into the cylinder space tS provided above the piston of the hydraulic cylinder are activated and the control valve which is provided in the connecting duct between the ducts and leading from the hydraulic oil vessel to the cylinder spaces of the hydraulic cylinder is kept currentless, whilst, if the electric motor is switched on, the pressure switch o fitted to that duct which passes into the cylinder space above the piston of the hydraulic cylinder is kept open, I-. 10.2 for holding the jib all three control valves are switched to the currentless position, whereas, if the electric motor is switched off, the pressure switch is open, 10.3 and for lowering the jib the control valve provided in that duct which passes to the cylinder space below the piston of each hydraulic cylinder and the control valve provided in that duct which passes from the hydraulic oil vessel into the cylinder space provided above the piston of the hydraulic cylinder are kept currentless and the third control valve is activated, whereas, if the electric motor is ;0 switched off, the pressure switch is kept open.
11. Process according to claim 10, characterised in that in the winning operation 11.1 for raising the jib the control valve provided in that duct which passes to the cylinder space, provided below the piston of each hydraulic cylinder and the control valve provided in that duct which passes from the hydraulic oil vessel into the cylinder space above the piston of the hydraulic cylinder are activated and the control valve which is provided in the connecting duct between the two ducts passing from the hydraulic oil vessel to the cylinder W spaces of the hydraulic cylinder is kept currentless, whereas, if the electric motor is switched on, the pressure switch fitted to that duct which passes into the cylinder space above the piston of the hydraulic cylinder is maintained open, 11.2 for holding the jib all three control valves are switched 26 currentless, whilst, for as long as the electric motor is switched off, the pressure switchi is kept open, 11.3 for rolling down the heavy weight body the control valve provided in that duct which passes from the hydraulic oil vessel into the cylinder space above the piston of the hydraulic cylinder and the ,0 control valve provided in the connecting duct between the two ducts and passing from the hydraulic oil vessel to the cylinder spaces of the hydraulic cylinder are activated and the third control valve is kept currentless, whereas, whilst the electric motor Sis switched off, the pressure switch is kept open, 11.4 and for the rolling off and simultaneous blocking of the heavy weight body whilst the electric motor is switched off. the control valve provided in that duct which passes from the hydraulic oil vessel into the cylinder space provided above the piston of the hydraulic cylinder and the control valve which, in the connecting duct between the two ducts and passing from the hydraulic oil vessel to the cylinder spaces of the hydraulic cylinder are switched to to the currentless position by the pressure switch
12. Process according to claim 10 or 11, characterised in that the control is so designed that, on attainment of a predetermined maximum force, at one of the hydraulic cylinders it releases the other hydraulic cylinder more 157 particularly in a manner in that the valve combination comprising that pressure limiting valve which is provided in the duct which passes into the space above the piston of the one hydraulic cylinder as well as that pressure limiting valve and the constant throttle which are provided in the ducts for o the return flow of the hydraulic oil, acts as a pressure limiting valve and the cylinder of the one hydraulic cylinder is retracted, that approximately simultaneously a further pressure limiting valve provided in the ducts for the return flow of the hydraulic oil, is opened, whereby the deblockable, non-return valve as well, downstream of the pressure limiting valve is opened, and that as a result, the pressure limiting valve which corresponds to the first mentioned pressure limiting valve and which is associated with the other hydraulic cylinder is likewise opened so that the other hydraulic cylinder can be retracted without appreciable opposing Spressure. DATED THIS 4 DAY OF NOVEMBER 1998 Krupp FLrdertechnik GmbH Patent Attorneys for the Applicant:- F.B.RICE CO. List of Reference Numbers 1 Winning apparatus 2 Support vehicle 3 Bucket wheels 4 Cutting edges (on 3) Retention means 6 (Heavy weight) body 7 Hinged jib (between 2 and 6) 8 Hydraulic cylinders (between 2 and 7) 8L Left-hand hydraulic cylinder 8R Right-hand hydraulic cylinder 9 Cylinder (for the setting of A) Toggle lever (at 7, for 6) 11 Arrow (denoting the movement of 6) 12 Sliding element
13 Beam
14 Lever (between 7 and 13) Arrow (indicating the movement of 6) 16 Sensor (on 7) A Distance (between 6 and 4) B Direction of movement (of 1) P1) P2 P3 Articulation points (on 3, 7, 13 and 14) P4) W Angle (about which 6 can be tilted) SL Control unit (of 8, left-hand) SR Control unit (of 8, right-hand) $1 Hydraulic oil vessel S2 Electric motor S3 Hydraulic pump S4 Control valve with 2 inlets and outlets each Non-retum valve (spring-loaded) S6 Pressure limiting valve S7 Control valve with 2 inlets and outlets each S8 Throttle non-return valve S9 Pressure switch Control valve with 2 inlets and outlets each S11 Throttle non-return valve S12 Pressure limiting valve S13 Pressure limiting valve cartridge valve) S13R Pressure limiting valve (corresponding to S13) S14 Pressure limiting valve 515 Pressure limiting valve S16 Non-return valve (deblockable) 517 Constant throttles L1 L2 Ducts L3 L4 L6 L7 Connecting ducts
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19748761A DE19748761A1 (en) | 1997-11-05 | 1997-11-05 | Coal extraction machine |
| DE19748761 | 1997-11-05 | ||
| EP98124087A EP1010818A1 (en) | 1997-11-05 | 1998-12-18 | Extraction tool for the extraction of mining goods |
| CA002256802A CA2256802A1 (en) | 1997-11-05 | 1998-12-22 | Excavation apparatus for mining layers of earth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU9133898A true AU9133898A (en) | 1999-06-03 |
Family
ID=32033827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU91338/98A Abandoned AU9133898A (en) | 1997-11-05 | 1998-11-04 | Winning apparatus for winning strata |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1010818A1 (en) |
| CN (1) | CN1216799A (en) |
| AU (1) | AU9133898A (en) |
| CA (1) | CA2256802A1 (en) |
| DE (1) | DE19748761A1 (en) |
| ID (1) | ID21210A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295401C (en) * | 2002-04-27 | 2007-01-17 | S.D.T.O公司 | Motor-driven road running vehicle for digging ditch on ground |
| US8789892B2 (en) * | 2010-10-29 | 2014-07-29 | Joy Mm Delaware, Inc. | Drive mechanism for a longwall mining machine |
| CN102080544A (en) * | 2010-12-09 | 2011-06-01 | 湖南工程学院 | Method and device for cutting cobalt crust at high speed in deep sea |
| CN106193151A (en) * | 2016-08-04 | 2016-12-07 | 中铁十九局集团第七工程有限公司 | Tunnel bull-dozer |
| CN106592671A (en) * | 2016-12-27 | 2017-04-26 | 山河智能装备股份有限公司 | Lateral-direction milling excavator |
| CN106703810A (en) * | 2017-03-03 | 2017-05-24 | 胡沿东 | Mining machine |
| CN109681199A (en) * | 2018-12-26 | 2019-04-26 | 贵州大学 | A kind of high-intensitive cutting roller for mining |
| CN110965601B (en) * | 2019-11-12 | 2022-05-03 | 秦克 | Hydraulic engineering desilting device |
| CN111779054A (en) * | 2020-07-20 | 2020-10-16 | 何红侠 | Outdoor building pipeline burying and ditching equipment with protective structure |
| CN112359899B (en) * | 2020-11-25 | 2022-04-22 | 中铁工程装备集团有限公司 | Wheel type cutter head hard rock trencher |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD12406A (en) * | ||||
| DE1164934B (en) * | 1964-03-05 | Uvo Pauls Dipl Ing | Trencher | |
| AT24221B (en) * | 1905-02-27 | 1906-05-10 | Georg Schmidt | Mixing machine for concrete, mortar, etc. like |
| DE960392C (en) * | 1954-02-27 | 1957-03-21 | Erwin Baas | Device for creating new or cleaning existing graves |
| US3225943A (en) * | 1962-05-29 | 1965-12-28 | Hewitt Robins | Cantilever rotary reclaimer |
| US3970154A (en) * | 1973-03-20 | 1976-07-20 | Banister Pipelines, Ltd. | Tool power system usable as substitute for vehicle propulsion |
| US4221505A (en) * | 1978-03-17 | 1980-09-09 | Taylor Smith Ernest J | Sub-surface irrigation channel |
| FR2522038A1 (en) * | 1982-02-19 | 1983-08-26 | Hydro Armor Sarl | MACHINE FOR CUTTING OR CURING SLICES |
| FR2643111B1 (en) * | 1989-02-15 | 1996-04-26 | Midi Salines Est Cie Salins | SEA STRAWBERRY SALT COLLECTOR |
| ES2048372T3 (en) * | 1989-08-08 | 1994-03-16 | Siemens Ag | REGULATION OF THE TRANSPORT AMOUNTS OF A BUCKET WHEEL EXCAVATOR OR A BUCKET WHEEL COLLECTOR IN OPEN SKY OPERATION. |
| DE8911435U1 (en) * | 1989-09-26 | 1989-11-09 | Bröhl, Franz, 8560 Lauf | Milling machine with depth adjustment and support rollers |
| US5113610A (en) * | 1991-10-31 | 1992-05-19 | Liebrecht Jr Sylvester | Rotating disk type ditcher |
| US5575538A (en) * | 1995-06-01 | 1996-11-19 | Astec Industries, Inc. | Rock saw with centerline conveyor assembly and method of digging a narrow trench |
| FR2736370B1 (en) * | 1995-07-05 | 1997-09-12 | Sdto | DEVICE FOR HOLLOWING TRENCHES AND DISCHARGING CUT-OUT |
-
1997
- 1997-11-05 DE DE19748761A patent/DE19748761A1/en not_active Withdrawn
-
1998
- 1998-11-04 AU AU91338/98A patent/AU9133898A/en not_active Abandoned
- 1998-11-04 CN CN98123837.8A patent/CN1216799A/en active Pending
- 1998-11-05 ID IDP981447A patent/ID21210A/en unknown
- 1998-12-18 EP EP98124087A patent/EP1010818A1/en not_active Withdrawn
- 1998-12-22 CA CA002256802A patent/CA2256802A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| EP1010818A1 (en) | 2000-06-21 |
| CA2256802A1 (en) | 2000-06-22 |
| CN1216799A (en) | 1999-05-19 |
| DE19748761A1 (en) | 1999-05-06 |
| ID21210A (en) | 1999-05-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK1 | Application lapsed section 142(2)(a) - no request for examination in relevant period |