CN87104493A - The excavation support that in the supporting of tilting and partly tilt, uses - Google Patents
The excavation support that in the supporting of tilting and partly tilt, uses Download PDFInfo
- Publication number
- CN87104493A CN87104493A CN87104493.5A CN87104493A CN87104493A CN 87104493 A CN87104493 A CN 87104493A CN 87104493 A CN87104493 A CN 87104493A CN 87104493 A CN87104493 A CN 87104493A
- Authority
- CN
- China
- Prior art keywords
- support
- tie
- excavation
- back timber
- bearing
- 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.)
- Granted
Links
- 238000009412 basement excavation Methods 0.000 title claims abstract description 48
- 230000007246 mechanism Effects 0.000 claims description 16
- 238000000605 extraction Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 2
- 238000005065 mining Methods 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 230000033001 locomotion Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
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
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/0481—Supports specially adapted for use in combination with the placing of filling-up materials
-
- 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
- E21D23/0082—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor specially adapted for vertical or steep gradient seams
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Earth Drilling (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Rehabilitation Tools (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The excavation support of the inclined cut that is used to tilt and partly tilts to support is provided with according to a kind of narrow structures frame, its tie (8) has connected a Height Adjustable bearing support (21) in the filling side, it is carrying the infilled wall (3) of inclination, and this wall is Height Adjustable equally.Best, the center of infilled wall is placed on the support axis.The adjustable supporting sledge (45) of side direction that bearing support slope bottom side abutment wall (49) can be contiguous excavation support constitutes a slide rail.What the excavation support that is made of two pillar frames was played stabilization is a bridge system (32), and this system is connected with back timber by a universal joint (34) as required.
Description
The present invention relates to and a kind ofly use in the supporting of tilting, particularly tilting and half tilting and have the excavation support that uses under the exploitation situation of inclined cut in the supporting, it has the hydraulic support pillar of settling between lying tie and back timber; Has one on the stepping bearing, especially the stepping mechanism that on a continuous hinged crossbeam, grips; Also have an adjustable for height infilled wall of seeing inclination on vertical view, this wall is placed on the bearing support of lying tie; It also has a supporting sledge, and this sledge is adjustable by the smooth flat that an adjustment oil cylinder faces toward adjacent excavation support.
In the open communique 3300167 of West Germany, a mounting system that is used to exploit precipitous coal storage layer is known, wherein, a kind of lightweight structures of canopy cribbing is used, these canopy cribbings always have two that settle before and after the step direction, place hydraulic support pillar on the public tie, that supporting a public back timber, and be connected with the hinged crossbeam of a formation stepping bearing by the stepping mechanism of a side.This canopy cribbing has Height Adjustable infilled wall in addition, and this wall so tilts with respect to step direction, so that the lamination of fill area is filled roughly zigzag filling forward position of formation.By the supporting the regulated sledge or the similar item of side, on the adjacent stent of the canopy cribbing stretching that supporting is always settled in its lower section in the stepping process.This scaffolding structure can use certainly in the inclination of tilt mining work plane is supported.
The primary task of the present invention is, the excavation support that makes above-mentioned known frame form has a bigger scope of application and compliance as well as possible to local condition at that time, also can use reliably changing gradient and/or change under the situation at work plane angle of slope.
According to this task solution of the present invention be: the bearing support with base plate is kept at a distance of infilled wall is being connected with the lying tie of can swinging up and down, and bearing support has smooth flat in the side of the sloping end one that tilts, and simultaneously, pushing up a side on the slope has the supporting sledge.
In excavation support of the present invention, according to a kind of swing set-up mode bearing support is hinged on the tie, thereby, excavation support can be implemented to regulate and routing motion with the infilled wall that is connected with a stepping unit herein relative to one another, here, infilled wall can have bigger distance to settle and be bearing on the bearing support with base plate.Be positioned at the bigger side plane of sloping bottom side, that is to say the downside of bearing support incline direction, the slide rail that can be used as adjacent stent supporting sledge is used.Like this, situation for big supporting-stepping distance also can provide a sufficiently long supporting sledge slide rail, and can be at Background Region, that is to say in the infilled wall zone that loads at stuffing pressure, and the lateral support that realizes a reliable excavation support in the distance more than base plate.
Superior scheme is that the infilled wall of inclination is placed on the bearing support approximately therebetween.By this measure, just can be implemented under the different inclination situations, the filling shielding action that reality is continuous is because the middle support series infilled wall that is connected on the bearing support is always shown the expansion of cover plate form greatly in both sides.
Single infilled wall itself is made up of the plate of several overlap joints, and these plates constitute with telescopic by at least one hydraulic support pillar, here, support column can be between top board and base plate stretching.
Excavation support of the present invention is arranged to canopy cribbing with narrow tie according to purpose, and simultaneously, stepping mechanism places the side of tie, and connects with it.In order to make excavation support of the present invention have different structure middle ware distances, and can adopt little structure middle ware distance under the situation of bigger angle of slope (30 °-40 ° of scopes in), this excavation support and its stepping mechanism that places long and narrow tie side should keep an as far as possible little structure width as required.Recommendablely be, the guide rod of being made up of spring lever of stepping mechanism should adopt up and down and settle, rather than about settle.
In the other preferred structure scheme of the present invention, the rearward end of back timber settled one adjustable by hydraulic jack facing to top board, stretch a back top beam that reaches bearing support, be connected with the top plate of infilled wall with it, the preferably campaign-styled connection of movable joint.Infilled wall bottom plate is connected on the bearing support.For the excavation support that makes the frame form reliable and stable, between tie and back timber, be provided with a bridge system by the design of lemniscate sheet piling, this system has one by back timber connector hinged cramp bar on back timber, and the guide peg that flexibly connects with tie.The bearing support that approximates the tie width by its structure width of purpose requirement greatly can have a port to pass by guide peg herein.The back timber connector of cramp bar should be placed in the zone between the support column head articulated elements on the back timber as required.Herein, cramp bar can be provided with a port and be used for pillar and pass through, perhaps two bar settings.
The guide peg of this top can as be provided with as rigid rod like that, perhaps, also can form by the thrust piston driving mechanism of a hydraulic pressure.Especially the back timber connector of cramp bar is a universal joint formula structure, and its adapter bracket is by a jointed shaft that points to direction of extraction, is connected with back timber by the spring assembly packaged type in the longitudinal direction arrangement of back timber.By this way, back timber can rotate to adapt to the not flatness of roof and floor around described jointed shaft, simultaneously, just can guarantee do not have the thrust of damage effect to be delivered to the bridge system from back timber with the spring assembly of the corresponding arrangement of articulated joint.Because having stability, this excavation support especially is worth recommending.By will be at least the telescoping cylinder of two-stage telescoping mechanism be applied to support column and just can make big Height Adjustment zone of excavation support acquisition.This support column is placed between tie and the back timber in the v-shaped structure mode according to the purpose requirement herein with being tilted in relation to each other, and erect image is known like that.
Provide in the further feature scheme of the present invention description of indicated embodiment in the accompanying drawings.Accompanying drawing is represented:
The vertical view of the excavation support of three arranged adjacent of Fig. 1 the present invention or be horizontal sectional view, they place one have the inclined cut half tiltedly or the exploitation job site that tilts to support.
The lateral view of Fig. 2 single excavation support of the present invention.
The view that Fig. 3 sees from the exploitation work plane along arrow III direction among Fig. 1.
In Fig. 1 and Fig. 3, exploit the excavation support 1 that the structural arrangement that supports has shown three adjacent same structures from being arranged in.This structure applications is in the exploitation that half of back production with inclination or coal-face 2 tilts or tilt is supported.In the fill area of back, generally bringing a whole filling of peace into from the overdraught gallery is that lamination is filled.This exploitation support must and the fill area shielding separate, this finishes by the infilled wall 3 that is connected with the excavation support dorsal part, these used for filler wall ends show greatly that the end face thin board type expands, referring to Fig. 1.The direction of declivity is represented with arrow 4, and direction of extraction shows with arrow 5.
These single excavation supports 1 always are connected by the hinged crossbeam 12 that a stepping mechanism 11 and almost parallel before exploitation work plane 2 are placed, this crossbeam 12 forms a stepping bearing and is made of several beam segments, and these beam sections are the movable connection of articulated at least in the plane perpendicular to ore bed.Stepping mechanism 11 is placed on a side of narrow tie 8, and is the upside (sloping top side) that is positioned at inclination.This mechanism 11 always constitutes perpendicular to the guide rod of settling 13 that is parallel to each other up and down in the plane of ore bed by two, and this guide rod 13 couples together by a connecting rod head 14 at its front end, and the opposite side of this connecting rod head 14 is connected with hinged crossbeam 12 by a hinge 15.Lying tie 8 has the frame support bracket 16 that stretches out at the inclined-plane upside, in its connector 17, be equipped with one can bilateral loading stepping oil cylinder 18, this oil cylinder 18 is placed between guide rod 13 and the tie 8, and is connected with connecting rod head 14 with hinge 19 by its piston rod.Guide rod 13 can be in frame support bracket 16 leading.
At the filling side end of tie 8, having connected one in its hinge approximately points to the hinge 20 of incline direction (arrow 4) has the bearing support 21 that can swing up and down of distance with base plate, is equipped with infilled wall 3 on it.Infilled wall 3 has a fluid pressure type pillar 22, and it is made of two-stage telescopic pillar equally, and its following oil cylinder spare 23 is held in one pillar support of bearing support 21.Its suspension column of support column 22 usefulness is supported on the sole 24.But the infilled wall 3 that sleeve stretches is made of the plate 25,26 and 27 of several overlap joints, and wherein, following plate 25 is fixed on the rearward end of the inclination of bearing support 21, and at this moment, the extension 28 of middle plate 26 and telescopic pillar 22 is connected.Above plate 27 by a hinge 29 with one after top position beam 30 or a connector that is connected with position, top, back beam be connected, on this top position beam or connector, support column 22 is gripped, like this, pillar 22 will after push up a beam and support.This position, top, back beam 30 is connected with the rear end of back timber 10 by connector 31.Be connected in series an articulated hydraulic pressure oscillating oil cylinder 31 between back timber 10 and position, top, back beam 30, by it, position, top, back beam 30 just can swing up and down facing to top board.This position, top, back beam 30 has covered the zone between infilled wall 3 and back timber 10 rear ends.
For excavation support 1 is firm, between its tie 8 and back timber 10, be connected in series a bridge system 32 according to the design of lemniscate sheet piling.This system 32 has a upper support bar 33, and its upper end of these bar 33 usefulness also is connected with back timber 10 by a universal joint 34, at this moment, is being connected on the hinge 37 and 38 of tie 8 rear ends by two guide pegs of settling up and down 35 and 36 near its lower end.This bridge system is known.This bridge system is placed in the back of support column 6 of the filling side of excavation support at this moment, is of value to the utilization in space.Simultaneously, its universal joint 34 places the pillar head to connect in the zone of saving between 9.Upper support bar 33, its width approximately is equal to the width of tie 8, has an opening 39 and passes with the support column 6 that allows to fill side.Adapt therewith, bearing support 21 is provided with a port 40 allows two guide pegs 35 and 36 pass.
The back timber connector 34 of cramp bar 33 as what carried, is arranged to the universal joint formula, on its adapter bracket 41, is connected with cramp bar 33 by a pin articulated elements 42, and the hinge of articulated elements 42 approximately points to the direction (arrow 4) that has a down dip.Adapter bracket 41 is connected with back timber 10 by a hinge 43 that points to direction of extraction 5, so just can realize the transverse movement around the back timber axle.Adapter bracket 41 can move on hinge 43 under the returning place force effect of spring assembly 44, like this, the sliding motion of back timber 10 can leading-in pole frame system 32 in.Spring assembly 44 for example can be made of the spring spool or the similar item of spring bundle, compression in advance.Replace 33 this elastomeric bearing, also one of the guide peg 35 of bridge system 32 and 36 can be arranged to the hydraulic jack of change in length.Yet in this situation, just can accept possible top board thrust non-dangerously.
Fig. 1 shows, is placed on the bearing support 21 in the middle of its wall greatly at the infilled wall 3 of described obliquity.Like this, the tube pillar 28 in the centre position is on the support axis, and the distance that infilled wall 3 stretches out tie 8 lateral boundaries to both sides is roughly the same.The infilled wall 3 of this tiltably-mounted just can roughly become cover plate shape overlap joint to form under the requirement of the filling shielding that constitutes sealing continuously on the whole bearing length in this way.
Each excavation support 1 pushes up a side all has a side direction and makes progress adjustable in the back of stepping mechanism 11 supporting sledge 45 on the slope, it is connected by the carriage 47 of the tie 8 that stretch out a parallel control stick 46 and a side.Be connected in series a movable hydraulic regulation oil cylinder 48 between supporting sledge 45 and tie 8, thus, this supporting sledge just can laterally stretch.
The abutment wall of the sloping bottom side of bearing support 21 incline directions (arrow 4) indication constitutes a smooth plane 49, it extends near the hinge 20 of bearing support 21 from infilled wall 3, perhaps approximately cross hinge 20, and always be supported with the supporting sledge 45 of following adjacent stent facing to it.Excavation support 1 just must arrive a secure support of the supporting sledge 45 of following adjacent stent like this at the end regions of filling side.Simultaneously, excavation support just can be implemented the stepping process in edge regions thereafter on supporting sledge 45.Can also realize the balance of excavation support 1 by the supporting sledge of hydraulic regulation.
The especially outstanding advantage of excavation support described above is, to the extensive adaptability of various operating conditions, and enough stability and minor structure width. Like this, excavation support just can be with little structure midfeather arranged adjacent. Because different inclination angle requires different structure middle ware distances, in order to adapt to the exploitation of different inclination angle, be not use special, with the hinged crossbeam 12 that gradient is at that time coordinated mutually, using exactly its beam segments 12 is to overlap the changeable hinged crossbeam of cylinder joint type.
Claims (15)
1, be used for tilting inclination and half excavation support that tilts to support that support particularly has the inclined cut, has the hydraulic support pillar of between tie and back timber, settling, has one on the stepping bearing, the special stepping mechanism that on a continuous hinged crossbeam, grips, have Height Adjustable overlooking and see the infilled wall of inclination, this wall is placed on the bearing support of tie, also has a supporting sledge, this sledge is adjustable by the smooth flat that an adjustment oil cylinder faces toward adjacent excavation support, it is characterized in that, keeping the bearing support (21) of the infilled wall (3) of certain distance with base plate is being connected with tie (8) of can swinging up and down, also has smooth flat (49) in sloping bottom side, simultaneously, supporting sledge (45) is placed in sloping top side.
2, by the excavation support of claim 1, it is characterized in that the infilled wall of inclination (3) is placed on the bearing support (21) approximately therebetween.
3, press the excavation support of claim 1 or 2, here, the infilled wall that is overlapped to form by plate is exsertile by at least one hydraulic support pillar, it is characterized in that, support column (22) is bearing on the bearing support of freely giving prominence to (21) in it places the distance of top, a sole (24) upper supporting column bottom.
By the excavation support of one of claim 1 to 3, it is characterized in that 4, stepping mechanism (11) is placed in the front of supporting sledge (45) and pushes up a side against the slope of tie (8).
5, press the excavation support of one of claim 1 to 4, it is characterized in that, settled in the rear end of back timber (10) one adjustable and snap into a back top beam (30) on the bearing support (21) by hydraulic jack (31) facing to top board, be connected with the top plate (27) of infilled wall (3) with it, the preferably campaign-styled connection of movable joint.
6, press the excavation support of one of claim 1 to 5, it is characterized in that, between tie (8) and back timber (10), settled a bridge system (32) by the design of lemniscate sheet piling, this system has one and is hinged on cramp bar (33) on the back timber (10) with back timber connector (34), also have and guide peg (35,36) that tie (8) flexibly connects.
7, by the excavation support of claim 6, it is characterized in that bearing support (21) is provided with a port (40) and is used for walking of guide peg (35,36).
By claim 6 or 7 excavation support, it is characterized in that 8, cramp bar (33) is provided with a port and is used for pillar and passes or be designed to double-rod structure.
9, by the excavation support of one of claim 6 to 8, it is characterized in that guide peg (36) is made up of a hydraulic thrust piston drive mechanism.
10, press the excavation support of one of claim 6 to 8, it is characterized in that, back timber connector (34) is a universal joint formula structure, its articulated stand (41) is by a jointed shaft with corresponding spring assembly (43) that points to direction of extraction, with the longitudinal direction of back timber movably mode be connected with back timber.
11, press the excavation support of one of claim 1 to 10, here, it is to be provided with according to narrow canopy cribbing, this frame has two hydraulic support pillars, and pillar is bearing on the tie before and after on the step direction, it is characterized in that, support column (6) and support column (22) always are made of a telescoping cylinder with at least two flexible levels, and, support column (6) with the V-shaped frame mode relative tilt of its foot be placed between tie and the back timber.
By the excavation support of one of claim 1 to 11, it is characterized in that 12, the guide rod (13) that is made of spring lever of the stepping mechanism of settling in tie (8) one sides (11) is settled up and down.
13, be used for tilting the excavation support of support especially for inclination with inclined cut and half tilt mining work, have two hydraulic props that settle front and back on step direction between tie and the back timber, has a stepping mechanism that is connected with a continuous hinged crossbeam with the stepping bearing, especially, also have a telescopic infilled wall of on the rear support bracket of tie, settling, it is characterized in that:
-these two support columns (6) always are made of a telescopic pillar with at least two flexible levels, and, be tilted in relation to each other ground manner series connection with the structure of V-arrangement roughly and be placed between tie (8) and the back timber (10);
-between tie (8) and back timber (10), be connected in series a bridge system (32);
The infilled wall (3) of-inclination is to be placed in like this on the bearing support (21), and promptly its center approximately is positioned on the support axis.
14, by the excavation support of claim 13, it is characterized in that bearing support (21) is to be connected with the rearward end of tie (8) with swinging up and down.
15, press the excavation support of claim 13 or 14, it is characterized in that, settled a fluid pressure type can regulate supporting sledge (45) in top side, bearing support slope, at this moment, the sloping bottom side abutment wall of bearing support constitutes a smooth supporting plane (49), is used for the supporting sledge of adjacent excavation support.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3618440,3 | 1986-05-31 | ||
| DE19863618440 DE3618440A1 (en) | 1986-05-31 | 1986-05-31 | Excavation frame for use in inclined and semi-inclined stratification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87104493A true CN87104493A (en) | 1987-12-30 |
| CN1008195B CN1008195B (en) | 1990-05-30 |
Family
ID=6302091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87104493 Expired CN1008195B (en) | 1986-05-31 | 1987-05-30 | Supports for slope supporting in tunnel |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN1008195B (en) |
| CS (1) | CS268830B2 (en) |
| DE (1) | DE3618440A1 (en) |
| ES (1) | ES2006752A6 (en) |
| PL (1) | PL154724B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101289943B (en) * | 2008-06-10 | 2010-04-21 | 曹树祥 | Adjustable type hydraulic formwork |
| CN102168572B (en) * | 2010-02-25 | 2012-10-10 | 郑州四维机电设备制造有限公司 | Waste filling supporting bracket |
| CN113513350A (en) * | 2021-05-31 | 2021-10-19 | 天津鹏程誉泰液压支架有限公司 | Support with rotatable guide rod and automatic reset function |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4130825A1 (en) * | 1991-09-17 | 1993-03-18 | Westfalia Becorit Ind Tech | Advancing mine roof support - has hinge connected roof and floor members with hydraulic cylinders, followed by working face protection unit |
| CN101769163B (en) * | 2010-01-09 | 2011-08-31 | 中国矿业大学 | Guide slideway mechanism for rotary-tray type feeding system |
| CN108657949B (en) * | 2018-05-09 | 2020-05-12 | 河北煤炭科学研究院 | Pneumatic monorail crane installation device and method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2806982C2 (en) * | 1978-02-18 | 1986-08-14 | Gewerkschaft Eisenhütte Westfalia GmbH, 4670 Lünen | Striding extension for blow molding plants in inclined storage |
| DE3300167A1 (en) * | 1982-01-08 | 1983-07-21 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Arrangement for working steep deposits, in particular coal seams |
| GB2143882B (en) * | 1983-07-23 | 1986-11-05 | Dowty Mining Equipment Ltd | Shield supports suitable for use in mines |
-
1986
- 1986-05-31 DE DE19863618440 patent/DE3618440A1/en not_active Withdrawn
-
1987
- 1987-05-28 CS CS873887A patent/CS268830B2/en unknown
- 1987-05-29 ES ES8701600A patent/ES2006752A6/en not_active Expired
- 1987-05-29 PL PL26597487A patent/PL154724B1/en unknown
- 1987-05-30 CN CN 87104493 patent/CN1008195B/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101289943B (en) * | 2008-06-10 | 2010-04-21 | 曹树祥 | Adjustable type hydraulic formwork |
| CN102168572B (en) * | 2010-02-25 | 2012-10-10 | 郑州四维机电设备制造有限公司 | Waste filling supporting bracket |
| CN113513350A (en) * | 2021-05-31 | 2021-10-19 | 天津鹏程誉泰液压支架有限公司 | Support with rotatable guide rod and automatic reset function |
Also Published As
| Publication number | Publication date |
|---|---|
| PL154724B1 (en) | 1991-09-30 |
| ES2006752A6 (en) | 1989-05-16 |
| PL265974A1 (en) | 1988-05-26 |
| CS388787A2 (en) | 1989-08-14 |
| CS268830B2 (en) | 1990-04-11 |
| DE3618440A1 (en) | 1987-12-03 |
| CN1008195B (en) | 1990-05-30 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| C14 | Grant of patent or utility model |