WO2008086947A1 - Schildausbaugestell für den bergbau sowie lenker und liegendkufe hierfür - Google Patents
Schildausbaugestell für den bergbau sowie lenker und liegendkufe hierfür Download PDFInfo
- Publication number
- WO2008086947A1 WO2008086947A1 PCT/EP2008/000016 EP2008000016W WO2008086947A1 WO 2008086947 A1 WO2008086947 A1 WO 2008086947A1 EP 2008000016 W EP2008000016 W EP 2008000016W WO 2008086947 A1 WO2008086947 A1 WO 2008086947A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shield support
- support frame
- shield
- longitudinal struts
- link
- Prior art date
Links
- 238000005065 mining Methods 0.000 title claims abstract description 16
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 abstract description 2
- 239000011435 rock Substances 0.000 description 11
- 210000001503 joint Anatomy 0.000 description 9
- 239000007787 solid Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000035508 accumulation Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 206010019133 Hangover Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/03—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support
Definitions
- the invention relates to a Schildausbaugestell for underground mining, with two prone skids and with four links to form a steering gear for articulated support of a crash shield, of which two handlebars form front links, which are each pivotally mounted by means of a front pivot pin on the floor runner, and of which two handlebars form rear link, which are each mounted by means of a rear pivot pin pivotally mounted on the floor runner, each handlebar having two longitudinal struts which protrude beyond a longitudinal webs rigidly connecting the central web with their ends as the lower and upper fork joint, and wherein each floor runner with a middle block a front and a rear pin receptacle for the pivot pin and side of the center block has side plates.
- the invention further relates to a handlebar for a shield support frame, with two longitudinal struts, which protrude over a rigidly connecting them central web with their ends as lower and upper fork joint for pivotally mounting the handlebar on a floor runner by means of pivot pins, as well as a floor runner for a shield support frame, with a middle block, on which a front bolt receptacle for supporting a front link and a rear bolt receptacle for supporting a rear link, for example a Lem- niskatengetriebes are designed to support a fracture shield and side panels are arranged on both sides.
- DE 20 2005 007 725 Ul it is proposed to provide the handlebars with a cover as a protective device, which is intended to prevent penetration of debris into the gusset from the outset, and DE 20 2004 007 635 discloses a monitoring sensor for the gusset to arrange on the hydraulic ram.
- the object of the invention is to minimize the risk of blockages of the handlebars when retracting the steering gear by constructive measures on the handlebar or on the floor skating in a shield rack for underground mining.
- the second measure which can be provided as an alternative or in addition to the vertical Hertwerks mistritten consists in sloping floors between center block and side plate of the floor runner to prevent accumulation in the gusset thereby that the broken rock can slip away to the side and thus not below the handlebar, especially the front link, can accumulate.
- the handlebars for shielding extension are characterized in that the center bar is spaced with its front side from the lower fork joint generating at least one vertical Hertwerks trimeries to be able to displace the heap up through the vertical Hertwerks trimeriee or when the handlebar or the link mechanism is pivoted by retracting the hydraulic ram in the substantially horizontal position.
- the vertical Hudtechniks trimierie can extend over at least 25%, preferably over about 30% to 50% of the length of the link between the pivot axes.
- the central web may also consist of several middle web elements, in particular two middle web elements, wherein between the front side of the lower fork joint nearest Mittelstegelements and the fork joint, a first vertical Hertwerks trimieri and preferably between the central web elements, a further vertical Hertwerks trimieri is formed.
- the fork joint near vertical Haufwerks slidestory is smaller than in the previous embodiment with a single Haufwerks trimerie.
- it increases the strength and bending stiffness of the handlebar due to the further connecting element between the longitudinal struts.
- the middle web element arranged adjacent to the lower fork joint can be wedge-shaped on its underside in order to improve the discharge of the heap to the vertical heap workings.
- the middle web element arranged adjacent to the lower fork joint can extend essentially only over half the depth of the longitudinal struts, and thus be spaced from the underside of the link and thus increase the free-lying skid-side clearance while simultaneously increasing the flexural rigidity of the link.
- the central web connecting the longitudinal struts or the middle web elements can be formed as solid blocks or hollow boxes or be part of a hollow central box or center box element, which are welded between the longitudinal struts.
- the longitudinal struts are provided on the strut bottoms with displacement slopes.
- the displacement slopes may in particular consist of chamfers, which are each formed on the outer edge of the longitudinal struts.
- the chamfers may advantageously extend substantially the entire length of the front links between the fork joints, and they preferably cooperate with the sloping floors by forming a kind of knife effect when the front links are swung down. The knife effect can also push the debris outwards and thus in the direction of the sloping outward and downward sloping floors.
- the front sides of the central webs may be chamfered at the bottom.
- the chamfers on the strut bottoms may preferably be at a bevel angle of about 45 ° to achieve relatively good displacement of the heap towards the sloped trays. Other bevel angles can achieve the same effect.
- a sloping floor for lateral Hauftechniksab Entry is arranged.
- the sloping floor allows lateral Hauftechniksab Entry only to one side.
- a sloping floor is arranged or formed in each case between the center block and both side plates in the floor runners according to the invention or a shield support frame with corresponding floor runners, so that in each case a sloping floor from the center block to the associated side panel drops out.
- the side panels with recesses or window-like recesses may be provided as lateral Hudwerks trim trece, wherein the sloping floors preferably open into the lower edge of the recess so that the laterally slipping off the sloping ground breaking stone can be discharged through the side plates out or displaced.
- the side plates between the front and the rear connection or pivot pin joint can be provided with a lowered contour, which contour has an upper side plate edge, to which the sloping bottoms preferably fall off continuously. With lowered contour are meant such side plates in which the upper side plate edge terminates substantially at the level of the sloping bottom.
- the upper lateral edge of the sheet may extend partially at the same height or lower than the pivot axis of the rear pivot pin.
- the lying skids between the center - block and the side plates can be designed in box construction and the sloping floors consist only of triangular in cross-section boxes, in turn, on the underlying boxes or the like. are set up.
- the lying skids between the center block and the side panels may have solid intermediate beams whose tops are chamfered and hereby form massive sloping floors.
- the intermediate beams may in particular also have trough-like sloping bottom. Combinations thereof or a layered structure of the intermediate beams is possible.
- the pin fuses can be firmly mounted or integrally formed with the side panels, while only on the respective outer side panels removable pin locks are arranged.
- Fig. 1 shows schematically a Schildausbaugestell with lying skids, Lemniskatengetriebe and broken shield in side view;
- Figure 2 is a plan view of two deck skids of a shield support frame with mounted front and rear links.
- Fig. 3 is a sectional view taken along III-III in Figure 1 without breakage shield.
- FIG. 4 shows a front link according to the invention in side view
- FIG. 5 shows a perspective top view of a lying skid according to a second embodiment
- FIG. 6 shows the lying platform of FIG. 5 in a side view
- Fig. 7 is a sectional view taken along VII-VII in Fig. 6;
- FIG. 8 shows a front link according to the invention according to a second embodiment in side view, partially broken away.
- a generally designated by reference numeral 10 shield support frame is shown schematically.
- the shield support frame 10 two lying skids 50, of which in Fig. 1 only one can be seen, with each deck skid 50 each a front link 20 and a rear link 30 of a Lemniska- tengetriebes 2 are pivotally mounted.
- a breaker plate 3 is pivotally supported at the upper end of a strong cap joint 4 is formed to articulated there to attach a not shown Hangendkappe, supported by means again not shown hydraulic ram relative to the couch skids 50 and vertically and within limits can also be moved horizontally to keep an underground strut between the floor skids 50 and the hangover cap, not shown, in the mining operation for an underground extraction device.
- Fig. 1 shows the shield support frame 10 in a position in which the breakage plate 3 has not yet reached its lowest Einfahrwolf, because both the front link 20 and the rear link 30 can be lowered even further by retracting the hydraulic ram in a clockwise direction.
- front for the front handlebar 20 and rear for the rear handlebar 30 refer to the operational use of a shield support frame 10, in which the mining machine runs along an underground mining spur, while behind the crash shield 3, the hanging wall collapses and closes by falling rock the already dismantled longwall.
- the front links 20, which are formed longer than the trailing arm 30, are therefore closer to the excavation and thus front.
- the front link 20, as well as Fig. 2 shows, mounted with a front pivot pin 5 in a front connecting joint 6, and the rear link 30 are mounted by means of a second pivot pin 7 in a rear connecting joint 8 on the floor runner 50, wherein the Pivot pin 5 or the connecting joint 6 are higher than the rear hinge pin 7 and the associated terminal joint 8.
- a hinge socket 9 for pivotally receiving a hemispherical terminal base of the support punch, not shown off - And retraction of the shield support frame 10 is arranged.
- Both the front link 20 and the rear link 30 build relatively wide and each have two strong longitudinal struts 21 and 31, here by means of a single, of a hollow box (center box) formed and extending substantially over the entire depth of the longitudinal struts 21 center web 22 and 32 are rigidly and rigidly connected to each other.
- the central webs 22, 32 which are welded to both longitudinal webs 21 and 32 by means of circumferential welds, extend, as can be seen particularly well from FIGS. 1 and 2, only over about 45% of the length of the longitudinal struts 21, 31 of Handlebar 20, 30 between the lower fork joints 23 and 33 and the upper fork joints 24, 34, where there is a hinge connection with the breakage plate 3.
- Both the central web 22 of the front link 20 and the central web 32 of the rear link 30 thereby have a front side
- Both the front link 20 and the rear link 30 can be made relatively wide at the same time and thus obtain favorable cross sections for secure support of the crash shield 3 and the Hangendkappe, without this wide version of the handlebar 20, 30 deteriorates the running-in behavior of the Lemniskaten- transmission 2.
- FIG. 4 in which the front link 20 is shown in detail, partially broken away. Only the two longitudinal struts 21 of the front link 20 extend over the entire length of the link 20, wherein both longitudinal struts 21 integrally terminate in the lower fork joint 23 and the upper fork joint 24 with an associated joint receptacle 23A and 24A for the pivot pin. While both longitudinal struts 21 are made of solid metal strips, the central web 22 is relatively less than a hollow profile or box section with circumferentially bent metal wall Sheet metal strength executed. The middle web formed by means of the central box 22 is welded circumferentially on both longitudinal struts 21. The side view in Fig.
- Both longitudinal struts 21 are further provided substantially over their entire length between the two fork joints 23, 24 on the strut bottom 21 'with a chamfer 27, wherein this chamfer forms the outer edge of both longitudinal struts 21. This is particularly clear from Fig. 3, to which reference is now made.
- Fig. 3 shows the front link 20 in section through the plane shown in Fig. 1, so that, starting from the illustrated sectional view extending both longitudinal struts 21 to the associated connection joint on the floor runner 50. Since the sectional plane in Fig. 3 is located just before the front side 25 of the center strut 22, and the vertical Hudtechniks mistre 26 between two longitudinal struts 21 can still be seen. On the longitudinal strut undersides 21 ', in turn, the chamfers 27 can be clearly seen in each case at the outer edges of the longitudinal struts 21, wherein both chamfers 27 form Verdrticianungsschrägen and here have a Abschrägungswinkel of about 45% to the strut bottom 21'.
- the horizontal runner 50 on both sides of a central block 51, on which, in particular Fig. 2 can be removed, both a front bolt receptacle and a rear bolt receptacle for the pivot pin 5 and 7 of the handlebar 20, 30 is formed are each an intermediate beam 52, the top 53 with a Bevel angle from here substantially obliquely 45 ° from the center block 51 to side plates 54, which are arranged on both sides and spaced from the center block 51.
- the sloping tops 53 form sloping floors, which are located exactly below the front link and with which it is achieved that rocks and other debris, which inadvertently enters the gusset between the front link 20 and deck skid 50, is discharged laterally.
- the sloping floors 53 thus provide for a lateral Hauftechniksab Entry.
- Below the middle block 51, the intermediate beam 52 and the side plates 54 a continuous over the width of the horizontal runner 50 bottom plate 61 is welded below which another, here a longitudinal slot 79 having strong bottom plate 78 is welded, the welds arranged as slot welding in the longitudinal slot 79 and executed.
- a longitudinal slot 79 having strong bottom plate 78 is welded, the welds arranged as slot welding in the longitudinal slot 79 and executed.
- other sheet metal layers could also be welded under (sandwich construction).
- FIG. 1 to 3 A synopsis of Figs. 1 to 3 shows that the two side plates 54, which extend at least between the joint tray 9 and the rear runner end continuously, between the front connecting joint 6 for the front link 20 and the rear connecting joint 8 for the rear link 30 with a Extremely lowered contour run. Between the said two connecting joints 6, 8, the upper edge 56 of the side panels partially extends in each case at a height which is significantly below the pivot axis 5 'of the front link 5 and in the embodiment shown even lower than the pivot axis 8' of the rear link 30.
- the top 56th the side plates 54 is much lower and closer to the bottom of the lying skid 50, as was previously customary in the prior art so that debris can be removed laterally.
- the entire heap can be dissipated unhindered above the side plates 54 side.
- debris or rocks which possibly remain in the center of the upper side of the center block 51 of the floor runner 50, can be displaced upward through the vertical manhole passages 26 in the front link 20 when the shield support frame 10 is retracted. the, and thus also the retraction of the shield support frame 10 does not hinder.
- FIGS. 5 to 7 show a second exemplary embodiment of a floor runner 150 according to the invention. Identical components are designated by reference numerals increased by 100. Also, the floor runner 150 has a hinge trough 109 for the support temple, behind which a center block 151 is welded to a here continuous, strong bottom plate 160.
- the center block 151 is provided with a front, ie closer to the hinge tray 109 arranged bolt receptacle 161 for the pivot pin of the front link and with a rear bolt receptacle 162 for the pivot pin of the rear link, and laterally of the center block 151 and spaced therefrom, the two side plates 154 are arranged , Both side plates 154 (not shown) with securing means for each from the outside, ie in Fig. 5 of the lower side surface 170 of the lying skid 150 inserted, wherein the bolt locks 163 and 164 on the inside in the assembled state of a shield support frame, adjacent to the stringer lying side plates 154 of closure plates or the like.
- annular disks 165 and 166 are welded into which a securing means such as a flat iron inserted and locked after mounting the pivot pin can be to secure the pivot pin in the mounting position against wandering out of the joint receptacle.
- 5 shows, between the central block 151 and each side panel 154, an intermediate beam 152 is arranged, the upper side of which is provided with a chamfer (153), which tapers in a trough-shaped manner to the ends of the intermediate beam 152.
- the intermediate beam 152 form below the front link arranged inclined floors for a lateral Haufwerksab Entry of debris or rock, which could accumulate in the gusset between the joint mounts and the connected links.
- the two side plates 154 have no lowered contour, but the upper edge 156 runs over the entire length of the lying runner 150 clearly above the pivot axis 108 'of the rear link.
- the intermediate plates 154 are provided with window-like recesses 175 whose lower edge 176 is flush with the inclined surface of the inclined floors 153, so that the rocks are discharged laterally through the recess 175 therethrough can.
- the window-shaped recesses 175 in the side plates 154 thus serve as in the previous embodiment to support the lateral Haufwerksab Entry.
- FIGS. 8 and 9 show a further exemplary embodiment of a front link 220 according to the invention.
- the front link 220 also has two solid longitudinal struts 221 arranged at a distance from each other and rectangular in cross-section, each parallel to one another in a lower fork joint 223 and an upper fork joint 224 end with bolt or joint receptacles 223A and 224A.
- Both middle web elements 222 and 282 here consist of solid blocks or profiles and are welded by means of circumferential weld seams 290 and 291 with the longitudinal struts 221. While this is closer to the breaker As shown in FIG. 8, it can be seen particularly well that the rear center web element 222 extends substantially over the entire depth of the longitudinal struts 221, that the front center web element 282 extends substantially only over about half the depth of the longitudinal struts 221. At the bottom 288, the central web element 282 is provided with two wedge surfaces 292, 293 which displace the debris to either the one log passage 286 or to the other log passage 226.
- the construction of the center block and the intermediate beam of the floor runner can be done with solid components or with hollow box profiles.
- the middle webs or middle web elements of the handlebars may consist of solid struts, boxes blocks or hollow box sections.
- the geometry of the recesses or the shape of the contour of the side plates can be varied varied and depend in particular on the basic construction of the floor runners.
- the invention can also be used with other mounting options for the handlebars as by means of inserted .Schwenkbolzen, without departing from the scope of the appended claims.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Steering Devices For Bicycles And Motorcycles (AREA)
- Lining And Supports For Tunnels (AREA)
- Blinds (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX2009007674A MX2009007674A (es) | 2007-01-19 | 2008-01-03 | Bastidor de ampliacion tipo escudo para la industria minera y brazo de guia y patin horizontal para este. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202007001142.3 | 2007-01-19 | ||
DE200720001142 DE202007001142U1 (de) | 2007-01-19 | 2007-01-19 | Schildausbaugestell für den Bergbau sowie Lenker und Liegendkufe hierfür |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008086947A1 true WO2008086947A1 (de) | 2008-07-24 |
Family
ID=39134838
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/000016 WO2008086947A1 (de) | 2007-01-19 | 2008-01-03 | Schildausbaugestell für den bergbau sowie lenker und liegendkufe hierfür |
Country Status (8)
Country | Link |
---|---|
CN (1) | CN201412176Y (de) |
CZ (1) | CZ21039U1 (de) |
DE (1) | DE202007001142U1 (de) |
MX (1) | MX2009007674A (de) |
PL (1) | PL67309Y1 (de) |
RU (1) | RU94629U1 (de) |
UA (1) | UA48835U (de) |
WO (1) | WO2008086947A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108166984A (zh) * | 2018-02-23 | 2018-06-15 | 济南中铁重工轨道装备有限公司 | 一种轮对防脱落装置 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102926789A (zh) * | 2012-11-16 | 2013-02-13 | 无锡阳工机械制造有限公司 | 一种液压支架中心距与宽度的确定方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7616114U1 (de) * | 1976-05-20 | 1976-10-14 | Bochumer Eisenhuette Heintzmann Gmbh & Co, 4630 Bochum | Schildausbaugestell |
DE2622468A1 (de) * | 1976-05-20 | 1977-11-24 | Bochumer Eisen Heintzmann | Schildausbaugestell |
DE2839004B1 (de) * | 1978-09-07 | 1979-12-06 | Hemscheidt Maschf Hermann | Liegendkufe fuer ein Schildausbaugestell |
DE8210762U1 (de) * | 1982-04-16 | 1982-07-01 | Klöckner-Becorit GmbH, 4620 Castrop-Rauxel | Schildausbaugestell |
DE202004007635U1 (de) * | 2004-05-10 | 2004-07-08 | Dbt Gmbh | Schildausbaugestell |
DE202005007725U1 (de) * | 2005-05-11 | 2005-07-14 | Dbt Gmbh | Schildausbaugestell |
-
2007
- 2007-01-19 DE DE200720001142 patent/DE202007001142U1/de not_active Expired - Lifetime
-
2008
- 2008-01-03 CZ CZ200921461U patent/CZ21039U1/cs not_active IP Right Cessation
- 2008-01-03 WO PCT/EP2008/000016 patent/WO2008086947A1/de active Application Filing
- 2008-01-03 CN CN2008900000175U patent/CN201412176Y/zh not_active Expired - Fee Related
- 2008-01-03 RU RU2009131467/22U patent/RU94629U1/ru not_active IP Right Cessation
- 2008-01-03 PL PL118444U patent/PL67309Y1/pl unknown
- 2008-01-03 MX MX2009007674A patent/MX2009007674A/es active IP Right Grant
- 2008-03-01 UA UAU200908693U patent/UA48835U/ru unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7616114U1 (de) * | 1976-05-20 | 1976-10-14 | Bochumer Eisenhuette Heintzmann Gmbh & Co, 4630 Bochum | Schildausbaugestell |
DE2622468A1 (de) * | 1976-05-20 | 1977-11-24 | Bochumer Eisen Heintzmann | Schildausbaugestell |
DE2839004B1 (de) * | 1978-09-07 | 1979-12-06 | Hemscheidt Maschf Hermann | Liegendkufe fuer ein Schildausbaugestell |
DE8210762U1 (de) * | 1982-04-16 | 1982-07-01 | Klöckner-Becorit GmbH, 4620 Castrop-Rauxel | Schildausbaugestell |
DE202004007635U1 (de) * | 2004-05-10 | 2004-07-08 | Dbt Gmbh | Schildausbaugestell |
DE202005007725U1 (de) * | 2005-05-11 | 2005-07-14 | Dbt Gmbh | Schildausbaugestell |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108166984A (zh) * | 2018-02-23 | 2018-06-15 | 济南中铁重工轨道装备有限公司 | 一种轮对防脱落装置 |
CN108166984B (zh) * | 2018-02-23 | 2024-05-10 | 济南重工集团有限公司 | 一种轮对防脱落装置 |
Also Published As
Publication number | Publication date |
---|---|
MX2009007674A (es) | 2009-10-12 |
DE202007001142U1 (de) | 2008-02-28 |
CZ21039U1 (cs) | 2010-06-28 |
PL118444U1 (pl) | 2010-03-29 |
UA48835U (ru) | 2010-04-12 |
CN201412176Y (zh) | 2010-02-24 |
RU94629U1 (ru) | 2010-05-27 |
PL67309Y1 (pl) | 2014-08-29 |
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