EP0225415A1 - Gerät zum Brechen von Gestein - Google Patents

Gerät zum Brechen von Gestein Download PDF

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Publication number
EP0225415A1
EP0225415A1 EP85308974A EP85308974A EP0225415A1 EP 0225415 A1 EP0225415 A1 EP 0225415A1 EP 85308974 A EP85308974 A EP 85308974A EP 85308974 A EP85308974 A EP 85308974A EP 0225415 A1 EP0225415 A1 EP 0225415A1
Authority
EP
European Patent Office
Prior art keywords
elastic member
shaft
elastic
rock
pockets
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.)
Ceased
Application number
EP85308974A
Other languages
English (en)
French (fr)
Inventor
Akiya Maeda
Mituya Sakai
Yukinobu Masaka
Masahiro Nomura
Yasuo Yamada
Tetsuro Tatsuhama
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.)
Seibu Polymer Kasei KK
Okumura Machinery Corp
Original Assignee
Seibu Polymer Kasei KK
Okumura Machinery Corp
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
Application filed by Seibu Polymer Kasei KK, Okumura Machinery Corp filed Critical Seibu Polymer Kasei KK
Priority to EP85308974A priority Critical patent/EP0225415A1/de
Publication of EP0225415A1 publication Critical patent/EP0225415A1/de
Ceased legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C37/00—Other methods or devices for dislodging with or without loading
    • E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
    • E21C37/10—Devices with expanding elastic casings

Definitions

  • the present invention relates to a rock breaking device for breaking or crushing rock or concrete by the utilisation of fluid pressure.
  • the invention relates to a device for breaking or crushing rock or concrete, which for use, is inserted into a hollow formed in the rock or the concrete to be broken.
  • a lime-based filling is used.
  • the lime-containing filling is preliminarily packed into hollow cavities formed in the object to be broken or crushed and then after the hollows are plugged, the filling is expanded through chemical action, whereby the object to be broken or crushed is statically broken.
  • the force against the wall of the hollows acts approximately uniformly on the object to be broken or crushed, that is to say uniformly around the circumference of the hollows, and many cracks are generated in the object.
  • the wall surface of the resulting tunnel having a desired shape is formed with many cracks so as to be a coarse and rough surface, while the ground around the tunnel is loosened. Therefore, it is inconvenient that the prior art crushing method needs a taking-out operating under guidance or many coatings with concrete.
  • the present invention has been developed with a view to substantially solving or ameliorating the above-­described disadvantages or inconveniences inherent in the prior art crushing methods, and has for its first object to provide an improved device which can accomplish a desired breaking or crushing of an object in a relatively short period of time with a favourable working environment and with no generation of noise and/or vibrations.
  • an improved rock breaking or crushing device has a metal shaft covered with a cylindrical elastic expansive member, such as a rubber tube. To break rock, this device is inserted nto a hollow formed in the rock to be broken or crushed, and the cylindrical elastic expansive member is expanded by a pressure fluid, thereby to break the rock by the pressure of the expansion.
  • an improved rock breaking or crushing device intended to be inserted into a hollow formed in a rock for then breaking the rock on the application of fluid pressure to the device, comprising: a shaft, a length of which accommodates a fluid passage extending axially within the shaft for example along the centre axis thereof, one end of which passage opens at the end of the shaft to be connected to a pressure fluid source, while the other end of the passage debouches at an outlet opening in an axially central portion of the outer peripheral surface of the shaft; an elastic member made of expandable material in cylindrical shape having an outer diameter suitable for insertion into the hollow in the rock with a small clearance, and an inner diameter capable of receiving the shaft therein, so that the elastic member is tight on the shaft, and provided with at least a pair of looped pockets each disposed within an axially central portion of the elastic member, opposite to the other in the axial direction of the elastic member and expandable by pressure fluid received therein, said looped pockets having port(s) disposed at
  • a crushing device comprises an elastic expansive member in a cylindrical configuration formed with looped pockets between the inner and outer peripheral surfaces thereof, said looped pockets having or communicating with at least one port at the inner periphery between the end portions of the elastic member, and extending towards the end portions, a metal shaft having an introduction passage for pressure fluid debouching at the center thereof, said elastic member being sleeved over the outer periphery of said shaft such that at least the inner peripheral surface of the end portions of the elastic member is closely adhered to said shaft, and a respective elastic ring harder than the the elastic member fixedly held to each end face of the elastic member by a fixture of a smaller diameter than said elastic ring, whereby pressure fluid can be injected from the fluid passage formed in the shaft to the inner peripheral side of the elastic member so as to expand the elastic member in the direction of an outer periphery thereof, thereby breaking or crushing an object to be broken up.
  • a deformable member is interposed between each end of the elastic member and the adjacent fixture.
  • a deformable member may be an elastic ring, a spring washer, or one end portion of a part which also serves to cover the elastic member.
  • the adjoining surfaces of the deformable member and abutting end of the elastic member may taper, e.g. as conical surfaces, with smaller diameter axially closer to the adjacent fixture than the larger diameter of these surfaces.
  • a cover tube may cover the whole outer periphery of the elastic member so as to reinforce the strength of the elastic member. Such a cover tube may include localised reinforcement.
  • deformable members When deformable members are interposed between the elastic member and the fixtures, they are preferably not softer than the elastic member, at least if a pair of deformable members is not connected together and/or abut tapering ends of the elastic member and/or if a cover tube over the elastic member lacks localised reinforcement. They may well be harder than the elastic member, e.g. in the case of spring washers or elastic rings of harder material than the elastic member.
  • the pockets in the elastic member suitably define annular cavities intermediately between inner and outer peripheries of the elastic member, communicating with a port or respective ports on the inner periphery of the elastic member, and extending from such port(s) axially towards the end of the elastic member.
  • each device is supplied from a common manifold through a stop valve 10.
  • the crushing device of the first embodiment includes an elastic member 1 detachably mounted on a shaft 4 with sealing means.
  • the elastic member 1 is made of elastic materials such as rubber, or some synthetic resin having an expansive characteristic, in the configuration of a cylinder, with tapering end faces 1a extending outwardly at opposite end portions thereof.
  • Within the elastic menber 1 a pair of looped pockets 3 are provided between the inner and outer peripheral surfaces facing each other and extending along the axial direction towards the opposite end portions of the elastic member 1, said pockets 3 having ports 2 disposed on the inner periphery with biasing to the center of the elastic member 1 for receiving pressure liquid into the pockets 3.
  • the pockets 3 of the elastic member 1 have cross-sections of lying L shape, so that there are portions of the elastic member 1 between the pockets 3 and the inner peripheral surface except at the ports 2.
  • the portions form seals for pressure liquid.
  • the shaft 4 to be employed as a solid core member, having a given length and a circular cross-section, is made of rigid materials such as metal or hard synthetic resin. It is provided with a central passage 6 for introducing pressure fluid from an inlet opening at the outer end surface of the shaft 4, which in use is coupled with a liquid source.
  • the passage 6 levels to an outlet 5 opening at the outer peripheral surface of the middle portion of the shaft 4, to communicate with the ports 2 of the pockets 3 of the elastic member 1.
  • screw-threads 7 are provided at both end portions of the shaft 4 to secure fixtures 12 so that these are detachable. These serve for fixedly positioning both ends of the elastic member 1 sleeved on the shaft 4 at a given position in the middle portion of the shaft 4.
  • the shaft 4 is forcibly inserted through the interior of the elastic member 1. Consequently, the elastic member 1 is sleeved onto the middle portion of the outer periphery of the shaft 4, with the elastic member 1 and shaft 4 tightly fitted against each other, while establishing communication between the ports 2 of the pockets 3 of the elastic member 1 and the outlet 5 of the passage 6 of the shaft 4.
  • Sealing means includes a pair of elastic rings 10, metal washers 11 and metal rings 14, and a cover tube 13.
  • the elastic rings 10 are made of materials more rigid than the elastic member 1 and have the same outer diameter as the elastic member 1. Each has a tapering face at its end adjoining a tapering end face of the elastic member 1. Each of the elastic rings is provided between the outer end of the elastic member 1 and the metal washer 11 which is backed up by the fixture 12 secured onto the thread 7 of the shaft 4. Hence the tapering face of the elastic ring 10 is tightly held against a tapering end face of the elastic member 1 in order to prevent the outer end of the elastic member 1 from wrapping. In other words, the elastic ring 10 is assembled to be pressed against the elastic member 1 from the outside by the fixture 12 acting through the metal washer 11.
  • This washer 11 has a similar or smaller diameter than the elastic ring 10, and the fixture 12, which is of a round nut type, has a smaller diameter than the elastic ring 10.
  • the elastic member 1 is closely surrounded by a cover tube 13 made of elastic material, serving to protect the outer peripheral surface over the whole length thereof.
  • the protective cover tube 13 is made of extensible reinforcement material such as a spiral spring or the like and is fitted onto the outer periphery of the elastic member 1.
  • a pair of metal rings 14 are formed as circular strips made of rigid material harder than the elastic member 1 made of metal, bead wire, reinforcing fabric and the like, and are respectively provided at both of the end portions of the elastic member 1 in order to prevent the elastic member 1 from wrapping at the end portions e.g.
  • Each metal ring 14 is embedded integrally within the elastic member 1 so that one end contacts the elastic ring 10 and its inner surface contacts the outer peripheral surface of the shaft. However, the metal ring 14 may be embedded completely into the elastic member 1. Although it is so illustrated in Fig. 3 that a pair of the looped pockets 3 associated with ports 2 in the elastic member 1 are formed separately from each other, axially spaced in the elastic expansive member 1, a groove may be formed, as shown in Fig. 6 between the inner peripheral surface of the elastic member 1 and the outer periphery of the shaft 4 for connecting the ports 2 as one unit at the inner periphery of the elastic member 1.
  • the metal washer 11 and the fixture 12 may be integrally formed.
  • the configuration of the fixture 12 there is no particular limitation on the configuration of the fixture 12 except that it should have a smaller diameter than the elastic member 1.
  • a reference A represents rock or other object to be crushed
  • a reference B represents a hollow formed in the object A to be crushed.
  • the internal diameter of the hollow B is considerably larger than the external diameter of the elastic member 1.
  • the crushing device comprising the elastic member 1 and the shaft 4 is inserted into the hollow B for use.
  • the elastic member 1 has the looped pockets 3 formed between the inner and outer peripheral surfaces thereof.
  • the looped pockets extend towards the opposite ends of the elastic member 1 and have ports 2 at the inner peripheral surface.
  • Member 1 is sleeved over the outer periphery of the shaft 4, provided with the passage 6 for the pressure fluid on the central axis thereof, such that at least the inner peripheral surfaces at the opposite ends of the elastic member 1 are in close contact with the shaft 4.
  • the elastic rings 10, harder than the elastic member 1 are brought into contact with the elastic member 1 at the opposite end faces, and further, the elastic member 1 and the elastic ring 10 are adhesively covered with the cover tube 13 at the outer periphery thereof.
  • each metal washer 11 of a smaller diameter than the cover tube 13 is pressed against an end face of the elastic member 1 by a fixture 12 smaller in diameter than the metal washer 11 and acting from outside at the end portion of the elastic ring 10 and the cover tube 13. Therefore, when the crushing device of the present invention is inserted into the hollow B in the object A to be crushed as shown in Fig. 3, and a pressure fluid is sent into the passage 6 formed in the shaft 4 from a supply source T (not shown) by a pump P, the pressure fluid L flows out to the looped pockets 3 of the elastic member 1 through the ports 2, thereby expanding the elastic member 1, as shown in Fig. 5, owing to the pressure of the fluid supplied into the looped pockets 3.
  • This expansive force enables crushing of the object A to be crushed such as a rock or concrete having scanty resiliency, without generating blasting noises. Furthermore, the generation of vibrations and/or dust which is inevitable with the crushing operation can be remarkably limited, thus ensuring the safety in the crushing operation. Moreover, when the pressure within the looped pockets 3 becomes high due to the injection of the pressure fluid in the crushing opration, the elastic member 1 at the side of the outer peripheral surface is subjected to an outward expanding action, while at the same time, the inner peripheral part of the elastic member 1 is loaded with such force as to press the inner peripheral wall 1A against the outer periphery of the shaft 4.
  • the inner peripheral portion of the elastic member 1, at the opposite ends thereof, is firmly and closely adhered to the outer periphery of the shaft 4, such that the pressure fluid can be effectively prevented from leaking.
  • the elastic ring 10, which is harder than the elastic member 1 and is in contact with the end face of the elastic member 1, is pressed against the elastic member 1 by the fixture 12 of a smaller diameter than the elastic ring 10, acting through the metal washer 11. Accordingly, the expansion of the elastic member 1 towards the end faces thereof, because of the injection of the pressure fluid can be prevented by the elastic ring 10.
  • the elastic ring 10 is made of an elastic material, the elastic ring 10 is able to follow the expansion of the elastic member 1.
  • this crushing device of the present invention displays a lot of useful effects, for example, capability of repeated use, with replacement of the elastic rings 10 only.
  • rock breaking device according to the present invention may be modified, in addition to in the first embodiment, into various embodiments as will be described hereinbelow.
  • a crushing device shown in Fig. 7 comprises an elastic member 1 of a cylindrical configuration which has a looped pocket extending towards each end portion from ports 2 formed at the inner peripheral surface thereof, a shaft 4 provided with a fluid passage which has an outlet at the inner peripheral surface of the elastic member 1, said elastic member 1 being sleeved on the outer periphery of said shaft 4, and a cover sheet 15 in the form of a flexible sheet of tubular shape which is wound around the whole outer periphery of the elastic member 1 in place of the cover tube 13 employed in the first embodiment.
  • the sheet 15 wound around the outer periphery of the elastic expansive member 1 is provided in order to prevent the elastic member 1 from being damaged by being pressed directly against the object to be broken such as rock, when in use, that is, when it is expanded within the hollow B formed in the object to be broken.
  • the cover sheet 15 is formed into a spiral shape, or it is wound up such that at least both end portions of the protective sheet are overlapped around the elastic member 1.
  • this cover sheet 15 there are favourably employed such flexible sheets as metal sheet, plastic sheet, fiber woven sheet or non-­woven cloth.
  • the crushing device is so constructed that the elastic member 1 of a cylindrical shape provided with looped pockets 3 extending towards the end portions from openings formed at the inner peripheral surface is sleeved over the outer periphery of the shaft 4 having the fluid passage 6 with the outlet 5 opening at the inner peripheral surface of the elastic member 1, with the cover sheet 15 of a flexible sheet being wound around the outer periphery thereof.
  • the elastic member 1 expands in the direction of the outer diameter thereof, the force of which expansion acts on the object to be broken, through the cover sheet 15, and therefore, the object to be broken such as a rock A can be broken with reduced amount of noise and vibrations. Moreover, since the inner peripheral wall of the looped pockets 3 is pressed against the shaft 4 through injection of the fluid into the looped pocket 3, the elastic member 1 is closely adhered to the shaft 4 with increased strength, and accordingly, the pressure loss of the fluid can be prevented with assured prevention of leakage of the pressure fluid in the axial direction of the elastic member 1.
  • the cover sheet 15 is wound around the outer periphery of the elastic member 1, it prevents the possibility of a part of the outer peripheral surface of the elastic member 1 entering the crack, and thereupon being damaged by so entering the crack. This improves the service life of the elastic member 1.
  • a crushing device shown in Fig. 8 does not employ the cover tube 13 which is used in the crushing device of the first embodiment.
  • the crushing device of Fig. 8 is constructed in such manner that an elastic member 1 which has looped pockets 3 formed between the inner and outer peripheral surfaces of the elastic member 1 and extending towards the opposite ends of the elastic member 1 is sleeved onto the outer periphery of the shaft 4 provided with fluid passage 6 at the central portion thereof so that at least the inner peripheral surfaces of the elastic member 1 at the opposite ends thereof are in close contact with the shaft 4.
  • the elastic rings 10, harder than the elastic member 1 are brought into pressed contact with the opposite end faces of the elastic member 1 by the fixtures 12 which have smaller diameter than the elastic ring 10.
  • the crushing device is characterised in that the cover tube 13 is integrally formed with the elastic member 1 at the outer peripheral surface of the elastic member, as a reinforcement material 16. Simultaneously with this, a spring washer 17 of conical type is employed in place of the elastic ring 10 of the first embodiment.
  • both the elastic member 1 embedded in the outer periphery of the shaft 4 and the shaft 4 are, according to this embodiment, screwed into male screws provided at the end portions of the shaft, and integrally formed into one unit at a predetermined position by a fixture 12 which has the spring washer 17 inserted between the nut and the elastic member 1 so that the spring washer is in contact with the end face of the elastic member 1, and therefore, the member 1 can be prevented from expanding in the axial direction thereof when in use.
  • the deformable spring washer is, of course, harder than the elastic member 1.
  • a bias cord, woven fabric, wire-netting or other extensible synthetic fiber cloth may be used, which should be embedded into the shape of a cylinder in parallel relation to the outer peripheral surface of the elastic member 1, to prevent localised expansion of the elastic member 1.
  • the crushing device of the present embodiment is reinforced by the reinforcing material 16 embedded at the outer peripheral region of the elastic member 1, localised expansion of the member 1 is resisted. Even when there is exists a crack or crevice in the crushing device itself or in the hollow B into which the crushing device is inserted for the process of breaking the rock or the like by the utilization of the expansion pressure of the elastic member 1, or even when a part of the outer peripheral surface of the elastic member 1 enters the above crack, the elastic member 1 is effectively prevented from locally expanding to a burst. This is of advantage to improve the service life of the elastic member. Moreover, the crushing device of the present embodiment has a practical advantage that only the elastic member 1 needs to be exchanged for a fresh one in the event that it is damaged.
  • a crushing device of Fig. 10 employs both the spring washer 17 of Fig. 9, and the flexible cover sheet 15 of Fig. 7.
  • a crushing device of Fig. 11 has the cover sheet 15 shown in Fig. 10 further covered with an elastic tube 13 such as, for example, a rubber tube.
  • the elastic cover tube 13 is expanded in diameter simultaneously with the expansion of the elastic member 1 when in use, and at the same time, the former is reduced in diameter simultaneously with the contraction of the elastic member 1 when the crushing operation is completed. Therefore, the crushing device of the instant embodiment is advantageous in that the tube 13 prevents it from remaining wedged within the hollow B, with the protective cover sheet 15 still expanded in diameter, when it is desired to remove the crushing device after the completion of the breaking or crushing operation.
  • Fig. 12 there is shown a still further embodiment of crushing device wherein the cover sheet 15 is fixedly fastened at both ends thereof by the metal washer 11 and the fixture 12, acting through the encircling elastic ring 10 made of, for example, synthetic resin, the outer periphery of which is covered with the cover tube 13.
  • a crushing device is shown in accordance with yet a further embodiment.
  • Member 18 extends over the whole outer peripheral surface of the elastic member 1, and both the cover sheet 15 and the moulded member 18 are fastened to the surface of the elastic member 1 by the metal washer 11 and the fixture 12.
  • the moulded member 18 and the cover tube 15 increase in diameter concurrently with the expansion of the elastic member 1 in the crushing operation, while they reduce in diameter simultaneously with the contraction of the elastic member 1, and accordingly, they are easily removed out of the hollow B after the completion of the rock breaking operation.
  • the moulded member 18 may be of harder material than the elastic member 1.
  • the above embodiments of rock-breaking device of the present invention comprise a cylindrical elastic member 1 provided with at least one pair of encircling pockets 3 associated with port(s) 2 and a metal shaft 4 on which said elastic member 1 is sleeved.
  • the outer peripheral surface of the shaft is in close communication with said port(s) of the elastic member.
  • the pockets 3 encircle the shaft 4.
  • Deformable members, such as elastic rings 10 are mounted onto said shaft 4 in touch with the end faces of the elastic member 1.
  • a fluid injection passage extends axially within the metal shaft 4 from one end thereof, to communicate with the looped pockets formed between the inner and outer peripheral surfaces of the elastic member.
  • the elastic member By injecting a fluid into the looped pockets through the fluid passage, the elastic member is expanded in the direction of an outer periphery thereof, and accordingly, the elastic member expands only in the transverse, e.g. radial direction of the hollow formed in the rock or concrete while being restrained from expanding in the longitudinal direction thereof by the elastic rings and/or other parts secured to the shaft at each end of the elastic member 1.
  • the rock or concrete can be easily broken or crushed by a large pressure produced in proportion to the area of the outer periphery of the elastic member by the pressure fluid pressed into the looped pockets.
  • the breaking or crushing operation can be carried out speedily, without causing such unfavourable influences to the operational environments as noise and/or vibrations.
  • the rock breaking or crushing operation can be performed highly efficiently and ecnomically.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
EP85308974A 1985-12-10 1985-12-10 Gerät zum Brechen von Gestein Ceased EP0225415A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP85308974A EP0225415A1 (de) 1985-12-10 1985-12-10 Gerät zum Brechen von Gestein

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85308974A EP0225415A1 (de) 1985-12-10 1985-12-10 Gerät zum Brechen von Gestein

Publications (1)

Publication Number Publication Date
EP0225415A1 true EP0225415A1 (de) 1987-06-16

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EP85308974A Ceased EP0225415A1 (de) 1985-12-10 1985-12-10 Gerät zum Brechen von Gestein

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EP (1) EP0225415A1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0311025A2 (de) * 1987-10-07 1989-04-12 Friedrich Wilh. Heym Gmbh & Co. Kg Gerät zum Spalten oder Zerkleinern von Gestein, Beton und ähnlichem mittels einer Treibladung und einer dieser vorgelagerten Flüssigkeit
FR2671376A1 (fr) * 1991-01-07 1992-07-10 Brole Jean Procede et dispositif hydraulique pour l'eclatement de la pierre ou de materiaux analogues.
US5171753A (en) * 1991-05-15 1992-12-15 A. H. Robins Company, Incorporated Derivatives of 2-amino-1-phenylethanol having antiulcer activity
WO2007094719A1 (en) * 2006-02-15 2007-08-23 Emstone Ab Device for breaking solid material and method of manufacturing a hose element for such a device
US10233754B2 (en) 2016-05-31 2019-03-19 2516139 Ontario Inc. Hydraulic rock fracturing device
CN111715368A (zh) * 2020-06-17 2020-09-29 成都易合元科技有限公司 一种柔性裂岩装置及其制作方法
CN114412463A (zh) * 2021-12-30 2022-04-29 广西新港湾工程有限公司 一种可变相调节式膨胀器
CN115749807A (zh) * 2022-12-29 2023-03-07 湖北水利水电职业技术学院 非圆形隧道掘进装备及开挖方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1630470A (en) * 1922-08-24 1927-05-31 Clifford Corp Apparatus for breaking down ore bodies
US1863286A (en) * 1930-11-19 1932-06-14 Sheppard Henry Bernard Hydraulic cartridge for use in mining, quarrying, and like operations
US1879907A (en) * 1930-09-11 1932-09-27 Ralph J Meyer Apparatus for mining
US1915687A (en) * 1931-07-13 1933-06-27 Ralph J Meyer Mining cartridge
US2211243A (en) * 1938-01-24 1940-08-13 Judith L Meyer Apparatus for and method of breaking coal
DE868135C (de) * 1951-06-15 1953-02-23 Neue Argus Ges M B H Verfahren und Vorrichtung zum Sprengen von bruechigen Stoffen mittels Druckfluessigkeit
DE875331C (de) * 1951-09-23 1953-04-30 Continental Gummi Werke Ag Einrichtung zur Durchfuehrung von Sprengungen
DE1165947B (de) * 1962-12-22 1964-03-19 Wetzell Gummiwerke Ag Druckschlauch mit Zonen unterschiedlicher Aufweitbarkeit und Verfahren zu seiner Herstellung
DE1299266B (de) * 1966-05-07 1969-07-17 Dunlop Co Ltd Dehnbare Sprengvorrichtung fuer den Bergbau

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1630470A (en) * 1922-08-24 1927-05-31 Clifford Corp Apparatus for breaking down ore bodies
US1879907A (en) * 1930-09-11 1932-09-27 Ralph J Meyer Apparatus for mining
US1863286A (en) * 1930-11-19 1932-06-14 Sheppard Henry Bernard Hydraulic cartridge for use in mining, quarrying, and like operations
US1915687A (en) * 1931-07-13 1933-06-27 Ralph J Meyer Mining cartridge
US2211243A (en) * 1938-01-24 1940-08-13 Judith L Meyer Apparatus for and method of breaking coal
DE868135C (de) * 1951-06-15 1953-02-23 Neue Argus Ges M B H Verfahren und Vorrichtung zum Sprengen von bruechigen Stoffen mittels Druckfluessigkeit
DE875331C (de) * 1951-09-23 1953-04-30 Continental Gummi Werke Ag Einrichtung zur Durchfuehrung von Sprengungen
DE1165947B (de) * 1962-12-22 1964-03-19 Wetzell Gummiwerke Ag Druckschlauch mit Zonen unterschiedlicher Aufweitbarkeit und Verfahren zu seiner Herstellung
DE1299266B (de) * 1966-05-07 1969-07-17 Dunlop Co Ltd Dehnbare Sprengvorrichtung fuer den Bergbau

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0311025A2 (de) * 1987-10-07 1989-04-12 Friedrich Wilh. Heym Gmbh & Co. Kg Gerät zum Spalten oder Zerkleinern von Gestein, Beton und ähnlichem mittels einer Treibladung und einer dieser vorgelagerten Flüssigkeit
EP0311025A3 (en) * 1987-10-07 1989-11-23 Friedrich Wilh. Heym Gmbh & Co. Kg Device for shattering or splitting rocks or concrete by using a propellant charge and a liquid placed before said charge
FR2671376A1 (fr) * 1991-01-07 1992-07-10 Brole Jean Procede et dispositif hydraulique pour l'eclatement de la pierre ou de materiaux analogues.
US5171753A (en) * 1991-05-15 1992-12-15 A. H. Robins Company, Incorporated Derivatives of 2-amino-1-phenylethanol having antiulcer activity
WO2007094719A1 (en) * 2006-02-15 2007-08-23 Emstone Ab Device for breaking solid material and method of manufacturing a hose element for such a device
US10233754B2 (en) 2016-05-31 2019-03-19 2516139 Ontario Inc. Hydraulic rock fracturing device
CN111715368A (zh) * 2020-06-17 2020-09-29 成都易合元科技有限公司 一种柔性裂岩装置及其制作方法
CN114412463A (zh) * 2021-12-30 2022-04-29 广西新港湾工程有限公司 一种可变相调节式膨胀器
CN115749807A (zh) * 2022-12-29 2023-03-07 湖北水利水电职业技术学院 非圆形隧道掘进装备及开挖方法

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