• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A rock cracking assembly comprises a rock cracking cartridge (1,1') and a detonator (30) with a detonator sleeve (31). Prior to priming, the rock cracking cartridge contains a rock cracking powder charge(6) in a closed space (5) in an outer sleeve (2) which is closed by a plug (4) in one end. A channel extends through the plug. The channel is closed in a front end by a membrane (20) which forms an integrated part of the plug, which consists of a polymeric material. During the priming operation, the detonator with the detonator sleeve is pressed against the membrane causing it to rupture and then further on into the rock cracking powder charge, so that the powder charge is compacted and completely fills the closed space in said sleeve. In the final phase, a rear portion (37) of the detonator sleeve is brought into sealing contact with the wall of a section (18) of said channel in the plug.
    公开号:SE1100956A1
    申请号:SE1100956
    申请日:2011-12-23
    公开日:2013-06-24
    发明作者:Jan-Aake Bengtsson
    申请人:Power Tools Spraeckutrustning I Herrljunga Ab；
    IPC主号:
    专利说明:

    The objects, features and properties will become apparent from the following description of a preferred embodiment.
    BRIEF DESCRIPTION OF THE DRAWINGS In the following description of a preferred embodiment of the invention, reference will be made to the accompanying drawings, of which Figs. Fig. 1 shows a non-fitted stone crack cartridge in longitudinal section, Fig. 2 shows a side view of a igniter capsule, comprising a main part which is insertable into the stone crack cartridge for fitting it, Fig. 3 shows a side view of a plug which closes one included in the stone crack cartridge sleeve, Fig. 4 shows the plug in cross-section along the line AA in Fig. 3, Fig. 5 shows the plug in a view BB in Fig. 3, and Fig. 6 shows the fitted stone crack cartridge with the igniter in side view and other parts in longitudinal section.
    DESCRIPTION OF PREFERRED EMBODIMENTS The unadapted detonating cartridge 1 'comprises an outer sleeve 2 in the form of an elongated circular cylindrical tube with a flat end wall 3. The sleeve material consists of a rigid ABS plastic, i.e. a copolymer with different amounts of acrylonitrile and butyrene, acrylonitrile monomer. At the other end, the sleeve 2 is closed by a plug 4, which is sealingly pressed into the sleeve / tube opening. The plug 4 also consists of a rigid ABS plastic. The space in the sleeve 2 closed by the plug 4, i.e. the space defined by the inside of the sleeve 2, the inside of the end wall 3 and the side of the plug 4 facing said space, is called the main chamber 5 and has a certain first volume V1.
    In the main chamber 5 there is a light discharge 6, which contains a well-measured amount of gunpowder, preferably nitrocellulose gunpowder (NC gunpowder), which is not compressed or compressed to any great extent in the unadapted cartridge 1 ”. In a certain compressed state in the fitted rock crack cartridge 1, Fig. 6, the crack powder charge has a certain second volume V2, which is slightly smaller than the volume of the non-compressed crack gun charge deposited in the un fitted cartridge 1 ". This means that also the space 7 which is not filled with gunpowder in the non-fitted stone crack cartridge has a correspondingly smaller volume.
    The stone crack cartridge 1,1 'has a preferred diameter of 16 mm in a preferred embodiment. Stone crack cartridges according to the preferred embodiment of the invention can thus be placed in boreholes as small as with a diameter of 20 mm or less, which can be drilled with conventional percussion drilling machines and not necessarily only with special machines.
    The inner diameter is 13.40 mm in the entire length of the sleeve 2 according to the preferred form of drying, ie also in the mouth portion 8 of the sleeve. The length is 83.30 mm.
    The plug 4, Fig. 2, Fig. 3 and Fig. 4, with its various details are cast or molded in a single piece. It consists of two main parts, a first part, called the pressing part 10, which is to be pressed into the mouth portion 8 of the sleeve 2, and a second part called the outer part 11 which, among other things, is to limit the pressure of the plug in the mouth portion 8, which according to the embodiment has an inner diameter of 13.4 mm. The outside 12 of the pressing part 10 also has a circular-cylindrical shape, coaxial with the mouth portion 8 of the sleeve 2, but with a diameter of 0.1 mm larger than the inner diameter of the mouth portion 8 to ensure that the plug is well anchored by being pressed into the mouth portion. The outside 12 of the pressing-in part 10 is chamfered at the end of the plug which constitutes the front end in the pressing-in operation. The bevelled edge is designated 13. The front end 14 of the plug 4 is completely flat according to the preferred embodiment.
    As best seen in Fig. 3, the recess portion 10 is in the form of a short tube with a central channel comprising a first, rear section 15 with a certain first inner diameter D1, extending from a rear edge 16 of the recess portion 10 to an annular lug or shelf 17, and a second, front section 18 having a certain second inner diameter D2, which is smaller than the first diameter D1. According to the embodiments, said first and second diameters D1 and D2 amount to 9.5 mm and 7.8 mm, respectively. Said second, front pipe section 18 is closed at the front end by a membrane 20, which constitutes an integrated and together with the rest of the plug 4 molded or molded part.
    The membrane 20 thus, like the rest of the plug 4, consists of rigid ABS plastic.
    The membranes 20 have a thickness which according to the embodiment amounts to 0.2 mm and both sides are completely flat. The side 21 of the diaphragm which in the non-fitted stone crack cartridge 1 ”faces inwards towards the main chamber 5, which is partially filled with gunpowder, is flush with the front flat end surface 14 of the plug 4. As can be seen from the drawings, the two pipe sections 15 and 18 and the cylindrical outside 12 of the pressing-in part 10 is coaxial.
    When the rock crack cartridge is arranged in a borehole in a rock to be cracked, it is moved downwards in the borehole with the outer part 11 of the plug 4 facing downwards. The outer part 11 here serves as a spacer means towards the bottom of the borehole according to a principle known per se. Said spacer according to the embodiment consists of two symmetrically concentric ring segments 24, each comprising a 90 ° circular sector. The outer diameter of the ring segments 24 is equal to the outer diameters of the sleeve 2, while their inner diameter D3 is slightly smaller than the diameter D1 of said first tubular section in the indentation part of the plug, so that next to each ring segment a narrow circular arcuate shelf 26 is formed in the plane forming the dividing plane between the indentation part 10 of the plug 4 and the outer part 11.
    Referring now to Fig. 5, an igniter is generally denoted by the numeral 30. An igniter sleeve is denoted 31. In the igniter sleeve 31, in the same manner as described in the above-mentioned Swedish patent specification SE 534 577, there is an igniter consisting of an electrically triggerable igniter bead (igniter), a ignition charge consisting of the same kind of NC gunpowder as the crack powder charge 6 in the sleeve 2, and, at the rear end, an ignition bead socket, to which electric ignition cables 37 are connected. The ignition bead is of the type which has its main use in the pyrotechnic field for igniting fireworks. Such spark plugs are manufactured e.g. of the Czech company META-PYRO, s.r.o., Brno.
    The igniter sleeve 31 consists, as according to the said SE 534 577, of the same kind of ABS plastic as the outer sleeve 2 and also as the plug 4. Its main part 32, which is the part to be inserted into the space 7 and pressed into the crack powder charge 6 in the fitting of the rock crack cartridge, it also has four outer grooves 35 intended to weaken the strength of the primer sleeve. Otherwise it has a smooth circular-cylindrical outside with a diameter D4 which is about 0.5 mm smaller than the inner diameter D2 in the second, front, tubular section 18 of the plug 4. The length is about 10 mm shorter than the length of the outer sleeve 2. The nose 36 is rounded. The volume of the main part 31 of the igniter capsule 30 and the igniter sleeve 31, which is to be pressed into the crack powder charge 6 in the main chamber 7 and where the compact knit charge is called V3.
    In contrast to the ignition sleeve shown in SE 534 577, the present ignition sleeve 31 has a rear circular cylindrical portion 37 with a diameter D5 which is larger than that of the main body 32 of the ignition sleeve. More specifically, its diameter D5 is one tenth of a millimeter larger than the inner diameter. D2, preferably about 0.1 mm larger, in said second tubular section 18 of the plug 4. The length of said rear portion 37 is equal to the axial distance between on the one hand the narrow shelf 26 in the pitch plane between the outer part 11 of the plug and the pressing-in part 10 and on the other hand the plane as they are avnied by both the side 21 of the diaphragms 20 which in the fitted cartridge 1 face the main chamber 5 and of the front, flat end surface 14 of the plug.
    Said rear portion 37 of larger diameter terminates with a straight end 40 whose diameter is equal to the outer diameter D3 of the shelf 26. When the rock crack cartridge according to the invention is to be fitted, the igniter / igniter sleeve 30/31 is moved with the nose 36 before in between the two spacers 24 and further down through the two tubular sections 15, 18 of the plug 4 towards the diaphragms 20. When the nose 36 has come into contact with the diaphragms 20, the pressing force is increased so that the diaphragms rupture. Since the diaphragm 20 consists of a relatively hard but still not brittle plastic material, the ruptured diaphragm forms a number of irregularly shaped tabs 39, which are folded to the side but can adhere to the plug 4, when the igniter capsule / primer sleeve 30/31 is further inserted through the now established the opening in the plug 4, which is illustrated in Fig. 6. Some flaps can also come loose and then leave traces in the form of more or less uneven tear edges.
    As the igniter / igniter sleeve 30/31 is pushed further and further into the space 7 and soon also pressed into the powder charge 6, this will be pressed to the sides and increasingly compacted, at the same time as the air present in the space 7 is forced out through the still not completely closed the channel in the plug 4. Finally, the rear portion 37 of the igniter sleeve, which has a sufficiently larger diameter D5 than the main part 32 of the igniter sleeve having the diameter D4, is pressed into said second tubular section 18 in the plug 4 with sealing contact between the portion 37 and the tube section 18 until finally the end 40 is pressed against the shelves 26 in the areas of the spacers 24 and against the upper surface portions 27 of the plug between the spacers 24. The leading edge 38 of the rear portion 37 of the igniter sleeve 31 is then flush with the front end 14 of the plug 4, alternatively a short distance into the cartridge.
    SE 534 577 states that the detonator can explode only if it is enclosed in a closed space that is limited by walls with adequate strength. Therefore, according to SE 534 577, an extra sleeve surrounding the igniter capsule has been introduced in the crack powder charge. The present invention is based on the surprising discovery that the same type of igniter can very well be made to explode without such an extra, surrounding sleeve, provided that the surrounding crack discharge 6 is tightly packed to the required degree. This effect is achieved according to the invention by arranging a well-measured amount of gunpowder in the sleeve 2 closed by the plug 4, so that the gunpowder is tightly packed together with the amount of air remaining in the sleeve, when the rear portion 37 of the igniter sleeve begins to be pressed into said second tubular section 18. in the plug 4. During the final phase of insertion of the igniter, the remaining amount of air in the sleeve 2 is compressed in the increasingly tightly packed crack powder charge in the thus cracked rock crack cartridge 1, but this compressed air does not appear to be crucial to achieve that pressure against the igniter sleeve 31. walls required for the tightly packed crack powder charge to explode upon ignition of the igniter 30. It can be seen from the above that the crack powder charge 6 can be packed to such an extent that it generates the necessary pressure against the igniter / igniter sleeve 30/31. It is well known that the degree of compression of an amount of powder is determined by a number of factors, including the volume of the powder before compaction and the volume of the closed space in which the powder is to be compacted. Given that the main part 32 of the igniter cap / igniter sleeve 30/31 to be pressed into the crack powder charge 6 has a certain given volume V3, the application limit of the invention is determined by the ratio V2 / V 1. In the described embodiment this ratio amounts to the order of 0.75. However, experience from the use of the described embodiment of the invention indicates that good explosive performance of the igniter capsule 30 in the fitted stone crack cartridge 1 can be achieved even if the ratio V2 / V1 is significantly greater than 0.75.
    The invention is not limited to the embodiment shown and described, but may be varied within the scope set forth in the appended claims. Thus, the absolute relative sizes of the individual details can be varied. The individual details can also be modified. For example, the rear portion 37 of the igniter sleeve may be slightly extended so that its leading edge 38 passes the front end 14 of the plug 4 when the igniter capsule 30 is inserted into the rock crack cartridge during fitting. It is also conceivable to make the second, front section 18 of the plug 4 and the rear portion 37 of the igniter sleeve 37 conical with a very small cone angle in order to provide a strong cone coupling between the igniter capsule 30 and the plug 4 at the same time with an effective seal.
    权利要求:
    Claims (7)
    [1]
    1. 0 15 20 25 30 35 PATENT CLAIMS 1. Stone cracking assembly comprising on the one hand an unadapted rock crack cartridge (1 °) and on the other hand an ignition capsule (30) comprising an igniter sleeve (31) in the form of a tube of polymeric material with a closed nose portion (36) at a front end, a closed rear portion (37), an igniter comprising an electrically activatable igniter initiator and an igniter ignitable igniter charge disposed in a main portion (32) of the igniter sleeve between said rear portion and the nose portion, the main portion being insertable into the rock crack cartridge adaptation thereof, characterized in that the unadapted rock crack cartridge comprises an outer sleeve (2) with an end wall (3) in a front, front end and a plug (4) which closes the outer sleeve in a second, rear end, wherein said outer sleeve, said end wall and said plug between them define a main chamber (5) with a first volume (V1), that said plug has a central channel (19) to which the fitting of the rock crack cartridge (1 ”) is closed through a sealing membrane (20), that the crack powder charge in the compressed state has a certain second volume (V2), that the main part (32) insertable into the rock crack cartridge has a certain third volume (V3), that said second and third volumes together correspond to said first volume, that said diaphragm in said plug is arranged to be able to be penetrated by the igniter capsule by forcefully pressing nose end (36) end of the igniter sleeve against the diaphragms, and that the outside of the igniter sleeve in the area of said rear portion (3 7) and a section (18) of said channel in transverse section has a circular, concentric shape, allowing the primer sleeve to, after penetration of said membrane, be inserted with its main part (32) into the rock crack cartridge, so that the crack powder charge is displaced by the spark plug sleeve and caused to completely fill the space between the outer sleeve, the igniter sleeve, said end wall and said plug, while said rear portion (37) of the igniter sleeve and said section (1 8) of said channel is brought into sealing contact.
    [2]
    An assembly according to claim 1, characterized in that said section (18) of said channel constitutes a front section of the channel and that it extends to the front end (14) of the plug. 10 15 20 25 30 35. Assembly according to claim 1, characterized in that said membrane (20) is arranged in or next to the front end (14) of the plug. . Assembly according to claim 1, characterized in that said membrane (20) forms an integral part of said plug consisting of a polymeric material by molding or compression molding. . An assembly according to claim 2, characterized in that the rear portion (37) of the igniter sleeve and said front section (18) of said channel are circular-cylindrical. . Assembly according to claim 2, characterized in that the rear portion (37) of the igniter sleeve and said front section (18) of said channel are conical with a cone angle which allows efficient coupling between said parts. . Fitted Stone crack cartridge (1) formed by the assembly according to any one of claims 1-6, characterized in - that it comprises an outer sleeve (2) with an end wall (3) in a first, front end and a plug (4) in a second, rear end, said outer sleeve, said end wall and said plug between them defining a main chamber (5) with a first volume (V1), which main chamber contains a crack-powder charge (6) which in a compressed state has a certain second volume (V2 ). extending through said plug a central channel (19) with, in the front end of the channel, facing the main chamber, traces of a broken seal, which may comprise any remnants (39) of a penetrated membrane (20), - that an ignition capsule (30) comprising an igniter sleeve (31) extends with a main part (32) into the main chamber and into the existing crack-knit charge which has been compacted by the pressure action of the igniter sleeve to said second volume (V2), which main part defines a third volume (V3), - that said second volume (V2) together with said third volume (V3) corresponds to said first volume (V1) - and - that a rear portion (37) of the igniter sleeve (31) extends sealingly into a front section ( 18) of the central channel in said plug. Stone crack cartridge according to claim 7, characterized in that said section (18) of said channel constitutes a front section of the channel and that it extends to the front end (14) of the plug. 10 15 20 25 30 35 10. ll. Stone crack cartridge according to claim 7, characterized in that said traces of a broken seal, which may comprise remnants of a membrane, are located in or next to the front end of the plug. Stone crack cartridge according to claim 7, characterized in that the rear portion (37) of the igniter sleeve, which has a larger diameter than its front main part, and said front section (18) of said channel are circular-cylindrical. Stone crack cartridge according to claim 7, characterized in that the rear portion (37) of the igniter sleeve and said front section (18) of said channel are conical with a cone angle which allows efficient coupling between said parts. Unsuitable rock crack cartridge, characterized in that it comprises a sleeve (2) with an end wall (3) in a first, front end and a plug (4) which closes the sleeve in a second, rear end, said sleeve, said end wall and said between them they form a main chamber (5) with a first volume (V1), which main chamber contains a crack powder charge (6) in the uncompressed state that said plug has a central channel (19) which is closed by a sealing membrane (20). ), that the cracked powder charge in the compressed state has a certain second volume (V2), that said membrane in said plug is arranged to be able to be penetrated by the nose portion of an igniter sleeve by forcing it against the membranes, and that said central channel in transverse cross-section has a circular shape, allowing the igniter sleeve to, after the penetration of said diaphragms, be inserted with its main part (32) into the rock crack cartridge, so that the crack powder charge is displaced by the igniter sleeve and caused completely to filling the space between the outer sleeve, the ignition sleeve, said end wall and said plug, while a rear portion (37) of the ignition sleeve and a section (18) of said channel are brought into sealing contact. 1
    [3]
    Stone crack cartridge according to claim 12, characterized in that said section (18) of said channel constitutes a front section of the channel and that it extends to the front end of the plug. 10 15 20 1
    [4]
    4. 1
    [5]
    5. 1
    [6]
    6. 1
    [7]
    Stone crack cartridge according to claim 12, characterized in that said membrane (20) is arranged in or next to the front end (14) of the plug. Stone crack cartridge according to claim 12, characterized in that said membrane (20) forms an integral part of said plug consisting of a polymeric material by molding or compression molding. Ignition capsule adapted for fitting a rock crack cartridge according to any one of claims 12 to 15, comprising an ignition sleeve (31) in the form of a tube of polymeric material with a closed nose portion (36) in a far end, a closed rear portion (37), an igniter comprising an electrically activatable igniter charge in a main portion (32) of the igniter sleeve between said rear portion and the nose portion, characterized in that the rear portion (37) of the igniter sleeve between the main portion of the sleeve and a rear end (40) has a cylindrical shape (D5) ) which is greater than the diameter (D4) of the said main part but smaller than the diameter of the rear end (40). Ignition cap according to claim 16, characterized in that the diameter (D5) of the rear portion of the igniter sleeve is adapted so that the igniter can be pressed into a stone crack cartridge with a sealing fit between said rear portion and the wall of a channel extending through a plug closing the rock crack cartridge.
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    同族专利:
    公开号 | 公开日
    TR201815920T4|2018-11-21|
    EP2795234A4|2015-08-05|
    ES2693065T3|2018-12-07|
    SE536821C2|2014-09-23|
    EP2795234A1|2014-10-29|
    WO2013095265A1|2013-06-27|
    EP2795234B1|2018-07-25|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    BE558592A|1957-06-21|
    DE19500417A1|1995-01-10|1996-07-11|Sobbe Friedrich Wilhelm|Propellant cartridge for disposal of blinds|
    ES2353738T3|2002-01-31|2011-03-04|Maxam Deutschland Gmbh|EXPLOSIVE PLASTIC COMPOSITION, IN PARTICULAR FOR A SMALL CALIBER INITIAL PRIMING FOR THE CONSTRUCTION OF TUNNELS, A PROCEDURE FOR ITS PREPARATION AND AN INITIATING LOAD FOR USE.|
    SE533526C2|2008-03-26|2010-10-19|Jan-Aake Bengtsson|Use of a powder-laden cartridge to crack rocks|
    SE534577C2|2010-02-03|2011-10-11|Jan-Aake Bengtsson|Stone crack cartridge and ignition capsule|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1100956A|SE536821C2|2011-12-23|2011-12-23|A stone cracking unit, an apertured stone crack cartridge and an unapproved stone crack cartridge, and an ignition capsule included in the assembly|SE1100956A| SE536821C2|2011-12-23|2011-12-23|A stone cracking unit, an apertured stone crack cartridge and an unapproved stone crack cartridge, and an ignition capsule included in the assembly|
    ES12859085.8T| ES2693065T3|2011-12-23|2012-12-12|A set of rock crushing, a primed rock crushing cartridge and an unprimed rock crushing cartridge|
    EP12859085.8A| EP2795234B1|2011-12-23|2012-12-12|A rock cracker assembly, a primed rock cracker cartridge, and a non-primed rock cracker cartridge|
    PCT/SE2012/051376| WO2013095265A1|2011-12-23|2012-12-12|A rock cracker assembly, a primed rock cracker cartridge, a non-primed rock cracker cartridge, and a detonator included in the assembly|
    TR2018/15920T| TR201815920T4|2011-12-23|2012-12-12|A rock breaker assembly, an ignited rock breaker cartridge, and an unfired rock breaker cartridge.|
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