EP0472545B1 - Nachgiebiger baustoff-teleskopstempel - Google Patents

Nachgiebiger baustoff-teleskopstempel Download PDF

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Publication number
EP0472545B1
EP0472545B1 EP90906874A EP90906874A EP0472545B1 EP 0472545 B1 EP0472545 B1 EP 0472545B1 EP 90906874 A EP90906874 A EP 90906874A EP 90906874 A EP90906874 A EP 90906874A EP 0472545 B1 EP0472545 B1 EP 0472545B1
Authority
EP
European Patent Office
Prior art keywords
support element
tube
inner tube
element according
filled
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 - Lifetime
Application number
EP90906874A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0472545A1 (de
Inventor
Heinrich Quante
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heinrich Quante Berg- und Ingenieurtechnik & Co KG GmbH
Original Assignee
Heinrich Quante Berg- und Ingenieurtechnik & Co KG GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE3915837A external-priority patent/DE3915837A1/de
Application filed by Heinrich Quante Berg- und Ingenieurtechnik & Co KG GmbH filed Critical Heinrich Quante Berg- und Ingenieurtechnik & Co KG GmbH
Priority to AT90906874T priority Critical patent/ATE93577T1/de
Publication of EP0472545A1 publication Critical patent/EP0472545A1/de
Application granted granted Critical
Publication of EP0472545B1 publication Critical patent/EP0472545B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
    • E21D15/18—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with one part resting on a supporting medium, e.g. rubber, sand, bitumen, lead, located in the other part, with or without expulsion or displacement of the medium upon excessive pressure
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/48—Chocks or the like

Definitions

  • the invention relates to an expansion element for use in underground mining and tunneling, in particular to secure the mined cavities in the face and stretch, with telescoping outer and inner tube and a curable building material core keeping both tubes at a distance from each other, the outer and inner tube is designed as a continuous telescopic tube which is closed on the inside.
  • So-called one-way expansion is still used in many areas of underground mining. It mainly consists of appropriately dimensioned wooden stamps, channel profile supports, double-T beams and the like. Often, however, hydraulic individual punches are also used in addition or only, which, however, results in a considerable cost burden due to the high manufacturing costs.
  • the required support pressure can be maintained in these hydraulic systems advantageously by pressure in the hydraulic system (300 to 600 bar) and by precisely working pressure relief valves. All stamps in the system are characterized by identical characteristics. The support of the mountains is technically optimally solved by such hydraulic systems in a mobile version. With stationary training, however, the disadvantages described above occur.
  • bitumen-like plastic filling compounds does not result in the necessary and required support pressures.
  • the same also applies to the solution known from DE-OS 32 36 421.0, in which such a pasty mass is arranged between two hollow tubes and should be displaceable from there.
  • the invention is therefore based on the object of providing an early-carrying, high-pressure-absorbing, easy-to-use, serving as a disposable removal element.
  • the object is achieved in that the outer tube forming the stamp and the inner tube or the inner tubes are designed to be mechanically prestressable in different pull-out lengths between the top of the line and the bottom of the line and that the outer tube has drainage holes distributed over the length.
  • the one-way construction according to the invention can thus introduce considerable forces into the mountains as soon as the building material has been filled in and hardened.
  • it is advantageously anchored securely so that it can then be filled with concrete or building material without risk. Since the building material is only filled in afterwards, an easy-to-use solution for one-way expansion is created, which is also characterized by the fact that concrete or building material can be pumped in in a liquid form, since the excess water is discharged via the building material drainage device, i.e. the drainage holes and is derived.
  • the filled building material forms a stable due to this drainage Building material core, which is considerably stabilized by the enveloping steel tube and shaped in such a way that it can take on high supporting forces of well over 100 tons and compressive forces. Since the core of the building material stands in both pipe sections as a supporting column after hardening, the mechanics providing the prestressing are no longer of any importance, so that simple and inexpensive mechanics can be used here.
  • the telescopic stamp according to the invention provides a preload of approx. 47 kg / N.
  • the invention provides that the winding roll is assigned to the crown-shaped head plate held over two U-plates and is designed as a hollow tube open on both sides, which is supported in the two U-plates and a bore in the inner tube and is equipped with a non-return valve arranged at the opposite end, in front of the inner wall of the inner tube, or a spring-loaded slide. Since the winding roll is located at the upper end, i.e. in the area of the head plate, a complete filling of the telescopic tube with building material is ensured in this way, whereby it is ensured via the non-return flap or the slide that after the filling, the still flowable building material cannot flow out.
  • the invention provides that a backstop is arranged in the region of the second U-plate in the form of a rope that wraps around the winding roller several times and is fixed on both sides and a spring that engages in the middle of the rope.
  • This non-return check works on the principle of rope friction. With the help of the rope, which wraps around the winding roll several times so that its ends are struck and a spring is attached in the middle of the rope, provides the necessary frictional forces, which prevents the winding roll from winding once back.
  • the winding roller is rotated with the aid of a winding bolt which engages a chip pin penetrating the winding roller.
  • a mechanism for bracing the two pieces of pipe which can be pushed into one another is also those in which the winding roll is designed as a capstan winch and is placed on the outside on the upper edge of the outer tube and that bands corresponding to the capstan winch are arranged on the outer wall of the inner tube.
  • the diameter tolerance between the inner and outer tube is chosen so that two or three thin ropes or straps are tensioned on the inner tube so that the inner tube held in this way can still be inserted into the outer tube.
  • the ropes are also guided around the tongues at the lower end of the inner tube, so that destruction or damage cannot occur.
  • the capstan winch ensures a favorable opening torque and prevents accidental unrolling.
  • the inner tube has sheet metal strips with a half thread running in the longitudinal direction on, the winding roll is provided on the upper edge of the outer tube, corresponding endless screws with hexagon socket at the free end and the whole is easily rotatable in this way, with the inner tube being "unscrewed" from the outer tube. It is also conceivable to assign separate tapes to the outer and inner tubes and then to move them with the help of a tensioning or sealing device, as is common in the packaging industry, so that the inner tube is also pulled out of the outer tube at the same time. The necessary security is achieved in particular if the straps and the central strap are made of plastic, preferably a cord strap polyester.
  • two-component plastics are used for rock solidification.
  • This material can also be used as a filling, it being provided that if the bores are omitted, the filling is formed from a two-component plastic and is provided with reinforcement, preferably in the overlap area between the outer and inner tubes.
  • reinforcement preferably in the overlap area between the outer and inner tubes.
  • the invention provides that the filling is assigned a deformation element which prevents transverse expansion, preferably in the form of a cartridge filled with lightweight concrete and having nestable edges.
  • This deformation element or the cartridge can be prefabricated so that an accurate response is given.
  • a limited insertion ensures, especially in case of unfavorable pressure conditions long service life of such one-way expansion. If the individual one-way expansion elements are always assigned the same deformation elements, the expansion elements advantageously have the same characteristic curve.
  • Crosswise strains can advantageously be avoided in that the cartridge has two or more chambers, one of which is filled with a pasty mass or granular material and both are connected to one another and / or the atmosphere via a rupture disk or a valve, or that the one chamber is not hardenable putty and the other chamber are filled with steel balls or gravel.
  • the cartridge has two or more chambers, one of which is filled with a pasty mass or granular material and both are connected to one another and / or the atmosphere via a rupture disk or a valve, or that the one chamber is not hardenable putty and the other chamber are filled with steel balls or gravel.
  • the invention is characterized in particular by the fact that a very versatile and, in particular, preloadable one-way expansion is created which is also easy to handle and can be transported cheaply.
  • This one-way expansion significantly increases the security of expansion, because it is introduced according to the respective application and has to be provided with a building material core that takes on high support forces.
  • the building material is filled with pressure through the inner pipe after the two pipes have been pulled apart or pressed apart by the tensioning device, which at the same time ensures uniform and complete filling.
  • the sheathing through the pipe pieces has a particularly advantageous effect, which are also suitable and designed such that tensile forces can also be taken over, for example with a corresponding load.
  • An early destruction of the outer and inner tubes forming a kind of formwork is practically impossible, whereby the service life of the tubes can be significantly increased by choosing the quality of the corresponding tubes, especially also by arranging the deformation elements that result in a limited flexibility.
  • the one-way expansion (2) consisting of elements (1) is shown in the form of a stamp.
  • the disposable extension (2) consists of two pieces of pipe that are dimensioned so that they can be guided into each other. Accordingly, the inner tube (4) has a smaller diameter than the outer tube (5).
  • the filling (6) shown in FIG. 1 is filled in the form of a building material core, via which the one-way removal (2) is then able to absorb high pressure forces.
  • Tests have shown that a 4.4 m long punch with a 300 mm diameter has 395 tons of lifting capacity.
  • a 6 m long stamps with the same diameter still have a load capacity of 255 tons.
  • a 4 m long punch with a diameter of 200 mm provides a lifting capacity of 170 tons. Since the inner pipe (4) merges into the outer pipe (5) without a bottom, it is possible to fill both pipes with the building material at the same time.
  • the belts (7, 8) extending between the inner tube (4) and the outer tube (5) are provided, which have openings (9 ) are passed through the respective wall of the inner tube or outer tube.
  • the openings are denoted by (9 or 9 ') and have a special shape in that they form a tongue by folding over a corresponding section. 2 shows this particularly clearly in the lower area.
  • the bands (7, 8) are fixed to the free end of the outer tube (5) and fastened to a collecting disk (10) positioned there in the area of the lower end of the inner tube (4).
  • a collecting disk (10) positioned there in the area of the lower end of the inner tube (4).
  • three bands (7, 8) are each fixed to the collecting disk (10) by forming a loop.
  • a central band (11) is diverted on the top of the collecting disc (10) and is fixed to a winding roller (14) at the opposite inner tube end (12) in the region of the head plate (13).
  • This winding roller (14) can be actuated from the outside, so that the position of the collecting disc (10) is changed by winding up the central belt (11), whereby at the same time the inner tube (4) is pulled out of the outer tube (5) in this way the steel pipe (1) is braced. It is important that the individual bands (7, 8) on the upper edge (15) of the outer tube (5) are fixed so that the inner tube (4) is also shortened by shortening the central band (11) safely emerges from the outer tube (5).
  • the guide ring (57) at the open end (56) of the outer tube (5) serves this purpose.
  • the winding roll (14) is securely mounted on a holder (16) which is connected to the head plate (13).
  • Two spaced U-plates (17, 18) serve as the holder (16), so that the winding roller (14) is mounted at a total of four locations and can therefore be rotated in the steel tube (1) from the outside without any problems.
  • Fig. 2 shows an application for one-way expansion.
  • a route (28) is shown, which is secured by extension arches (29).
  • These expansion arches (29) consist of different segments (31, 32) held together by connections (30), which slide into each other when the frictional forces exerted by the connection (30) are exceeded, so that the cross section of the route secured by the expansion ( 28) reduced accordingly.
  • the one-way extension (2, 33) is inserted between the track base (36) and the track ridge (37) in such a way that it can absorb appropriate supporting forces. This ensures that the cross section required for the conveyor belts (34) and the industrial conveyor track (35) is maintained for a very long time.
  • a bore (65) is provided in the inner tube (4) (FIG. 5), through which the building material can be filled into the entire element (1). This hole is closed by a non-return valve (67) in order to prevent the filled building material from flowing back after the filling process.
  • FIG. 3 shows the upper end region of a stamp which is provided for supporting the upper segment of the extension arch (29) according to FIG. 2.
  • a fabric cushion (91) is arranged which, after the building material contained in the fabric cushion (91) has hardened, lies closely around the extension arch (29) and around the head plate (13), so that a positive fit Association is given.
  • 5 and 6 show the upper area of the one-way installation (2). Due to the enlarged reproduction, you can see the simple and practical storage of the winding roll (14) and its protection against unintentional backflow when filling the building material (6).
  • the seal (64) is provided in the front area of the winding roll (14). Their exact location is limited by the wall of the inner tube (4) and the U-shaped plate (17).
  • This sheet (17) thus ensures a secure mounting of the seal (64), which effectively seals the area around the bore (65).
  • the U-plate (17) also ensures an overall thrust-proof position of the winding roll (14), in that an outer ring (71) is mounted between the two walls of the U-plate (17) and has an elastic pin (70), which also serves as a stop for the return spring (69) of the check valve (67).
  • the non-return flap (67) equipped with an inner guide (68) the interior (66) of the inner tube (4) and outer tube (5) is securely closed with respect to the winding roller (14), which is otherwise open on both sides.
  • the non-return flap (67) is moved so that the building material can then flow into the interior (66). If the flow of building materials subsides, the non-return flap (67) closes automatically.
  • the U-plate (17) is connected to the head plate (13) via the screw connection (72), just as the U-plate (18) is fixed to the head plate (13) via the screw connection (78). With (73) holding screws are designated, via which the central band (11) on the winding roller (14) is fixed.
  • a simple brake for the winding roller (14) is created via the backstop (74), which consists of a rope wound several times around the winding roller (14), which is fixed at the end by means of a rope lock (79).
  • a spring (77) is attached via the rope loop (76), which ensures that the rope (75) with its various turns always lies firmly against the winding roller (14).
  • the mode of operation and the holder are particularly clear from FIG. 6, the cable lock (79) covering both ends of the cable (75).
  • Fig. 6 also illustrates that a very inexpensive to fill filler neck is specified via the winding roller (14).
  • a winding pin is provided which can be inserted into the winding roller (14) and which is fixed to the dowel pin (70) via the oblique and transverse slots assigned to it.
  • Fig. 7 shows another embodiment of the filler neck (108), which is secured here by a slide (109), which in turn is loaded by a spring (111) so that it automatically bores the bore (65) in the inner tube after pulling out the filling hose (4) reseals.
  • FIG. 8 shows the deformation element (95) already indicated in FIG. 1 and arranged in the lower region of the outer tube (5) in the form of a prefabricated cartridge (96).
  • FIGS. 9 and 10 FIG. 10 showing an embodiment where a certain lightweight concrete (97) is arranged inside the cartridge (96), which is used to push together the parts of the edges (98, 99) that fit into one another Cartridge (96) is disabled.
  • the one-way extension (2) can then move as the inner and outer pipes (4, 5) slide into each other as far as the lightweight concrete allows.
  • a cartridge (96) with two chambers (100, 101) is provided, which is integrated in the one-way fitting (2), the lower chamber (101) being filled with a pasty mass (102). Both chambers (100, 101) are separated by a rupture disk (103), which ensures that the deformation element (9) is not inadvertently pushed together.
  • Gravel (104) is filled into the upper chamber (100), into which the pasty mass (102) must be pressed when the rupture disk (103) is crushed. When the pasty mass (102) is pressed into the chamber (100) and thus into the gravel (104), the deformation element (95) is compressed and thus the disposable extension (2) yields.
  • FIG. 11 shows the embodiment already described above, in which a corresponding band (7, 8) is fixed on one side at the fixed point (113) and then down around the lower end and the deflection rollers (112) arranged there upwards to the edge ( 15) is returned, where a winding roll (14) arranged in a housing (110) is positioned positively. With this winding roller (14), when the tape (7, 8) is wound up, the inner tube (4) is lifted or pushed out of the outer tube (5).
  • Fig. 12 shows an embodiment in which the winding roll (14) is also placed on the upper edge (15) of the outer tube (5).
  • the winding roll (14) consists of an endless screw (20) engaging in the sheet metal strip (19) placed on the outer wall of the inner tube (4).
  • the worm screw (20) has a hexagon socket (21) at the free end (22) so that it can be turned easily.
  • the sheet metal strip (19) is provided with a half thread, as is realized on adjustable hose clamps.
  • the endless screw (20) equipped with the hexagon socket (21) is supported, the holder (16) being shown in the form of a simple slide cap.
  • FIG. 13 A further embodiment is shown in FIG. 13, where ropes or tapes are provided distributed around the circumference.
  • These steel strips (24) in this embodiment are fixed to the lower end of the inner tube (4), for example over the washer and then through the space between the inner tube (4) and the outer tube (5), to the upper end of the outer tube (5) again to be led outside.
  • a band end piece (25) is also fixed in the form of a steel band, so that with the help of a commercially available tensioning and locking device for extending the telescope, the two bands are simply moved against each other. In the end position, locking (26) then takes place.
  • Corresponding apparatus and also the connection of the steel strips (24, 25) is known, for example, in the packaging industry.
  • a reinforcement (45) is attached, which can also be provided in the other areas to stabilize the building material core (6).
  • an extension arch can be created from the one-way expansion (2) by connecting the various steel tubes (1, 1 ', 1' ', 1' '') together, for which purpose the individual steel tubes or Each end of the stamp has connecting lugs (85, 86) with bolt bores (88) and bolts (87).
  • lugs 85, 86
  • bolt bores 88
  • bolts 87

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Building Environments (AREA)
  • Tents Or Canopies (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
EP90906874A 1989-05-16 1990-05-10 Nachgiebiger baustoff-teleskopstempel Expired - Lifetime EP0472545B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90906874T ATE93577T1 (de) 1989-05-16 1990-05-10 Nachgiebiger baustoff-teleskopstempel.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3915837 1989-05-16
DE3915837A DE3915837A1 (de) 1989-05-16 1989-05-16 Baustoff-teleskopstempel
DE4000310A DE4000310A1 (de) 1989-05-16 1990-01-08 Nachgiebiger baustoff-teleskopstempel
DE4000310 1990-01-08

Publications (2)

Publication Number Publication Date
EP0472545A1 EP0472545A1 (de) 1992-03-04
EP0472545B1 true EP0472545B1 (de) 1993-08-25

Family

ID=25880898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90906874A Expired - Lifetime EP0472545B1 (de) 1989-05-16 1990-05-10 Nachgiebiger baustoff-teleskopstempel

Country Status (12)

Country Link
US (1) US5240354A (pl)
EP (1) EP0472545B1 (pl)
CN (1) CN1028889C (pl)
AU (1) AU638249B2 (pl)
CA (1) CA2057922A1 (pl)
CS (1) CS239090A3 (pl)
DE (2) DE4000310A1 (pl)
ES (1) ES2044581T3 (pl)
HU (1) HUT61381A (pl)
MA (1) MA21845A1 (pl)
PL (1) PL164180B1 (pl)
WO (1) WO1990014499A2 (pl)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2010257264B1 (en) * 2010-08-02 2011-06-23 Craig Barnet An Improved Prop for Mining, Construction and the Like
US20120148350A1 (en) * 2010-12-10 2012-06-14 Kenneth Poulson Mine prop jack and method of prestressing a mine prop
CN102135002A (zh) * 2011-01-27 2011-07-27 东北大学 一种远程遥控的机械式可伸缩支柱
CN104594924B (zh) * 2014-11-13 2017-03-08 广东安元矿业勘察设计有限公司 一种填砂式采矿支柱的使用方法
CN106640163B (zh) * 2017-01-09 2019-03-19 广东安元矿业勘察设计有限公司 组合支架盾构式全面采矿法
CN111927487B (zh) * 2020-08-08 2022-03-08 郑州航空工业管理学院 一种地下施工支护支架
CN117646639B (zh) * 2024-01-25 2024-04-02 北京科技大学 一种矿用的便捷式全断面支护金属网临时支撑装置及方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB128580A (en) * 1918-06-20 1919-12-18 Arrow Grip Mfg Company Inc Improvement in Roller Base Lifting Jack.
DE476783C (de) * 1927-10-21 1929-05-25 Ernest Windsor Bowen Trockenkammer, in welcher das Gut mittels eines endlosen Foerderbandes ueber Heizkoerper gefuehrt wird
DE818332C (de) * 1950-06-27 1951-10-25 Mannesmann Ag Zweiteiliger, nachgiebiger Gruben- oder Streckenstempel
US3396545A (en) * 1965-04-07 1968-08-13 Tech Inc Const Method of forming concrete bodies
US3469358A (en) * 1968-02-01 1969-09-30 Arlo Inc Method for pumping a column
US3891184A (en) * 1974-07-01 1975-06-24 Meredith Fields Multi-purpose lift device
US4185940A (en) * 1977-11-08 1980-01-29 Klaus Spies Method and system for supporting a roof
US4332512A (en) * 1979-05-22 1982-06-01 Bochumer Eisenhuette Heintzmann Gmbh & Co. Arrangement for erecting columnar supporting elements for underground excavations
US4255071A (en) * 1979-08-27 1981-03-10 Bochumer Eisenhutte Heintzmann Gmbh & Co. Supporting of excavation roofs
GB2100318A (en) * 1981-05-13 1982-12-22 Ogc Research & Dev Ltd Improvements in and relating to support members
GB2114183A (en) * 1982-01-19 1983-08-17 Barker And Company Limited R E Adjustable support element
DE3236421A1 (de) * 1982-10-01 1984-05-17 Ruhrkohle Ag, 4300 Essen Nachgiebiger streckenausbaustempel

Also Published As

Publication number Publication date
ES2044581T3 (es) 1994-01-01
CN1051608A (zh) 1991-05-22
PL164180B1 (pl) 1994-06-30
MA21845A1 (fr) 1990-12-31
US5240354A (en) 1993-08-31
EP0472545A1 (de) 1992-03-04
WO1990014499A3 (de) 1991-02-21
PL285206A1 (en) 1991-01-14
CA2057922A1 (en) 1990-11-17
DE59002491D1 (de) 1993-09-30
AU5553590A (en) 1990-12-18
AU638249B2 (en) 1993-06-24
CS239090A3 (en) 1992-07-15
WO1990014499A2 (de) 1990-11-29
HU904363D0 (en) 1992-04-28
CN1028889C (zh) 1995-06-14
HUT61381A (en) 1992-12-28
DE4000310A1 (de) 1991-07-11

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