CN102337888A - Large-gradient development machine - Google Patents
Large-gradient development machine Download PDFInfo
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- CN102337888A CN102337888A CN2011102877993A CN201110287799A CN102337888A CN 102337888 A CN102337888 A CN 102337888A CN 2011102877993 A CN2011102877993 A CN 2011102877993A CN 201110287799 A CN201110287799 A CN 201110287799A CN 102337888 A CN102337888 A CN 102337888A
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- scraper plate
- transporter
- large gradient
- development machine
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Abstract
The invention provides a large-gradient development machine. The large-gradient development machine comprises a cutting part (1), a shovel board part (2), a body part (3), a waling part (4), a rear support (5), a transporting machine (6), a hydraulic system, an electrical control part (11), a water system (12) and an operating platform (13). The large-gradient development machine is characterized by also comprising a traction winch (7), a drainage device and a foldable scraping plate (9); the traction winch (7) is arranged on the rear support (5) and is connected with a ground anchor (b) which is fixed in a roadway through a cable chain (71); and the drainage device is arranged at the front end of the large-gradient development machine; and the foldable scraping plate (9) is arranged on the transporting machine (6). The large-gradient development machine can effectively solve the problems of drainage, material transportation and skid resistance of a machine body in the operating process of the development machine, saves time, improves transportation efficiency and ensures safe operation of the development machine.
Description
Technical field
The present invention relates to the coal mine roadway road heading machinery, more specifically, relate to a kind of can be on the heavy grade tunnel large gradient roadheader of steady operation.
Background technology
At present, the operating angle of tunnelling machine is mostly between ± 16 °, if the gradient in the tunnel surpasses this scope; Will adopt the big gun pick, big gun pick operation is not only dangerous high, and development machine quits work; Cause the great amount of time waste, some special operation condition (being positioned at bridge or building below like face) forbids to carry out the big gun pick again simultaneously, can only change the driving angle in tunnel like this; Increase unnecessary workload, also wasted a large amount of coal resources simultaneously.
In the prior art scheme; As disclosing a kind of large gradient roadheader in the publication number " CN101210493A "; Increased the driving force of running part; The top that is employed in development machine simultaneously is provided with can stretch out the top support that withstands on the top, tunnel, and the hinged respectively anti-skidding oil cylinder of traction that stretches out and withstand on the both sides, tunnel in both sides is supported in the back, draws anti-skidding oil cylinder and top support together support body.But because the coefficient of road adhesion in heavy grade tunnel is less, the driving force that increases running part can not increase the tractive force of complete machine; Though and the support of body top can improve the normal pressure of running part to ground; But supporting because of the top is to be fixed on the body; This will make the fuselage of development machine fix and can't walk; And the distance of the top board in tunnel and base plate is one and constantly changes irregular numerical value, finally cause fuselage to move or tractive force not enough and glide, can't on heavy grade, work at all.The supported on both sides that supports with the back is supported on body top, makes the inconvenient operation of development machine, and the stroke of oil cylinder is limited, can only do the adjustment of simple position, can not satisfy requirement of actual application.
In above-mentioned open file, also increase the height of transporter inside strake in addition, suitably improved the haul angle; But the transporter appearance and size of using this scraper plate is big, weight increases the weight of, and receives the restriction of structure, uses less; It is less that scraper plate actual adds a large amount, can not satisfy instructions for use.
Simultaneously, development machine is after driving a period of time, and the ponding in the tunnel acquires a certain degree; Need stop development machine and retreat, and with water pump the ponding in the tunnel are discharged then, and development machine moves to the operating position again behind the discharge ponding; Continue driving, make that like this operating efficiency of development machine is comparatively low.
Summary of the invention
In view of this; Technical problem to be solved by this invention is; A kind of novel large gradient roadheader is provided, makes to advance on the bigger tunnel gradient, to walk, tunnel, realize the material transportation of heavy grade; Guarantee freight volume simultaneously, do not increase the structure and the weight of transporter on a large scale; On the other hand, can increase work efficiency so that development machine is discharged the ponding in the tunnel in work.
The invention provides a kind of large gradient roadheader; Comprise cutting units 1, shovel board 2, body 3, running part 4, back support 5, transporter 6, hydraulic system, electrical control division 11, water system 12 and operating desk 13; Also comprise pulling winch 7, dewatering installation and folding scraper plate 9; Said pulling winch 7 is installed in said back and supports on 5; Said pulling winch 7 is connected with earth anchor b in being fixed on the tunnel through rope chain 71, and said dewatering installation is arranged on the front end of said large gradient roadheader, and said folding scraper plate 9 is arranged on the said transporter 6.
In technique scheme; Preferably, said pulling winch 7 comprises hydraulic wireline winch or electric winch, and said hydraulic wireline winch is by hydraulic pump drive; Said electric winch is driven by flame-proof electric motor; One end of said rope chain 71 is fixed on the earth anchor b of eminence in the tunnel, and the other end twists on the turning cylinder 72 of said pulling winch 7, the said turning cylinder 72 of said pulling winch 7 through the said rope chain 71 of reeling to draw said development machine.
In technique scheme, further, said rope chain 71 comprises wire rope or iron chains.
In technique scheme, further, the operating mechanism of said pulling winch 7 is installed on the operating desk of said large gradient roadheader.
In technique scheme; Preferably; Said dewatering installation comprises filter 81, drinking-water pipe 82 and suction pump, and said filter 81 comprises water tank 811 and be arranged on the filtration water cover 812 on the said water tank 811 that ponding gets into said water tank 811 through said filtration water cover 812; Said drinking-water pipe 82 is arranged on the inside of said water tank 811, and said drinking-water pipe 82 is connected with said suction pump.
In technique scheme; Further; Said water tank 811 is arranged on said shovel board 2 front ends with said filtration water cover 812, and said filtration water cover 812 is provided with porous net grid 8121, and the adapter mouth 83 that connects said suction pump is left at said shovel board 2 rears; Said suction pump comprises two, is connected both sides, said shovel board 2 rear end symmetrically.
In technique scheme, preferably, said folding scraper plate 9 comprises scrapes panel seat 91, bearing pin 92, scraper plate body 93; Said scraping on the driving-chain 61 that panel seat 91 is installed in said transporter 6; Said bearing pin 92 is installed in said scraping in the panel seat 91, and can rotate said scraping in the panel seat 91, and said scraper plate body 93 is installed on the said bearing pin 92; And can rotate with said bearing pin 92; Said scraping also is provided with limited block 94 on the panel seat 91, said limited block 94 is arranged on the rotate path of said scraper plate body 93 lower ends, and the axis of said bearing pin 92 is vertical with the transporting direction of said transporter 6.
In technique scheme; Further; Said scraper plate body 93 comprises that one has the gusset of knuckle; When said scraper plate 9 launched, the lower vertical of said gusset was in the plane at conveyer belt 62 places of said transporter 6, and the angle between the conveyer belt 62 of the top of said gusset and said transporter 6 is an acute angle; Also be provided with ribs 931 on the said scraper plate body 93.
In technique scheme; Further; The discharge end below of said transporter 6 also is provided with the scraper plate gatherer; Said scraper plate gatherer comprises that one can make the folding guide strip with level and smooth gradient 63 of said gusset, and said guide strip 63 rear ends are connected with the link-supporting plate 64 parallel with said driving-chain 61.
In technique scheme, preferably, the haul angle of said transporter 6 is+10 °～+ 45 °.
Through large gradient roadheader provided by the invention, make to advance on the bigger tunnel gradient, to walk, tunnel; Foldable scraper plate machine provided by the invention is scraped plate height and is increased to original 3 times after expansion, material conveying amount also increases accordingly, but its transporter profile, weight, structure changes than conventional transport and not obvious, and transportation angle maximum can reach+and 10 °～+ 45 °; On the other hand, can increase work efficiency so that development machine is discharged the ponding in the tunnel in work, easy to operate, safe and reliable.
Description of drawings
Fig. 1 shows the perspective view according to heavy grade transporter one embodiment according to the invention;
The master that Fig. 2 shows structure shown in Figure 1 looks sketch map;
Fig. 3 shows the sketch map of large gradient roadheader shown in Figure 1 at the direction of fall driving;
Fig. 4 shows the enlarged drawing of A portion among Fig. 1;
Fig. 5 shows the schematic top plan view of transporter structure shown in Figure 1;
Fig. 6 show B-B among Fig. 5 to cross-sectional schematic;
Fig. 7 shows the enlarged drawing of C portion among Fig. 6;
Fig. 8 shows the structural representation of driving-chain among Fig. 5;
The master that Fig. 9 shows collapsible scraper plate according to the invention looks sketch map;
Figure 10 shows D-D cross-sectional schematic among Fig. 9;
Figure 11 shows the structural representation according to dewatering installation one embodiment according to the invention;
Figure 12 shows the structural representation at the another visual angle of structure shown in Figure 11.
The specific embodiment
In order more to be expressly understood above-mentioned purpose of the present invention, feature and advantage, the present invention is further described in detail below in conjunction with the accompanying drawing and the specific embodiment.
Set forth a lot of details in the following description so that make much of the present invention, still, the present invention can also adopt other to be different from other modes described here and implement, and therefore, the present invention is not limited to the restriction of following disclosed specific embodiment.
Fig. 1 shows the perspective view according to heavy grade transporter one embodiment according to the invention; The master that Fig. 2 shows structure shown in Figure 1 looks sketch map; Fig. 3 shows the sketch map of large gradient roadheader shown in Figure 1 at the direction of fall driving, and Fig. 4 shows the enlarged drawing of A portion among Fig. 1.
Extremely shown in Figure 4 like Fig. 1; The invention provides a kind of large gradient roadheader; Comprise cutting units 1, shovel board 2, body 3, running part 4, back support 5, transporter 6, hydraulic system, electrical control division 11, water system 12 and operating desk 13; Also comprise pulling winch 7, dewatering installation and folding scraper plate 9 (seeing Fig. 7, Fig. 8, Figure 10), said pulling winch 7 is installed in said back and supports on 5, and said pulling winch 7 is connected with earth anchor in being fixed on the tunnel through rope chain 71; Said dewatering installation is arranged on the front end of said large gradient roadheader, and said folding scraper plate 9 is arranged on the said transporter 6.
Wherein, hydraulic system comprises the elevating ram 10 (as shown in Figure 2) of cutting units 1, also comprises hydraulic power unit, hydraulic operation platform, oil cylinder, hydraulic motor, fuel tank and interconnective sebific duct; Electrical control division 11 is responsible for the electrical control of large gradient roadheader complete machine; The effect of water system 12 is that hydraulic system, motor, cutting units are cooled off, and its working environment is lowered the temperature the cutterhead of protection cutting units; Prolong the application life of hydraulic system, cutterhead and motor; Water system also carries out depositing dust through spraying to the tunnel simultaneously, guarantees production safety and improves working environment, and operating desk 13 is used for the driver excavation operation of complete machine is controlled.
Like Fig. 3, shown in Figure 4; Preferably, said pulling winch 7 comprises hydraulic wireline winch or electric winch, and said hydraulic wireline winch is by hydraulic pump drive; Said electric winch is driven by flame-proof electric motor; One end of said rope chain 71 is fixed on the earth anchor b of eminence in the tunnel, and the other end twists on the turning cylinder 72 of said pulling winch 7, the said turning cylinder 72 of said pulling winch 7 through the said rope chain 71 of reeling to draw said development machine.
Fig. 3 is the sketch map that large gradient roadheader provided by the invention tunnels on+25 ° direction of fall, and development machine is connected with the earth anchor b of eminence through the rope chain 71 of rear end.
When development machine tunnels at direction of fall; Because wet and slippery, the many rubble in road surface in the tunnel; Coefficient of road adhesion is low, makes development machine be easy to occur in the course of the work the phenomenon that glides, and direction of fall is unquarried work plane; Therefore development machine generation downslide phenomenon danger very can cause very big injury to driver and equipment.The invention provides a kind of hydraulic wireline winch, be arranged on the rear end of large gradient roadheader, when development machine carries out the descending driving; One end of the rope chain 71 of hydraulic wireline winch is fixed on the earth anchor b place in the tunnel; The other end is fixed on the turning cylinder 72 of hydraulic wireline winch, and hydraulic wireline winch can pass through coiling rope chain 71 like this, and large gradient roadheader is formed certain draw; Prevent the downslide of development machine, protect the safety of driver and heading equipment effectively.
Further, said rope chain 71 comprises wire rope or iron chains.Electric winch has saved hydraulic means owing to adopt flameproof motor to drive, and has simplified the structure of development machine widely, and has alleviated the weight of development machine, has reduced the fault rate of pulling winch simultaneously, and operating efficiency is provided.
Further, the operating mechanism of said pulling winch 7 is installed on the operating desk of said large gradient roadheader.Like this, the operator of development machine can operate the walking of development machine and the drawing-in motion of pulling winch 7 simultaneously, and is more convenient to operate, safe and reliable.
Fig. 5 shows the schematic top plan view of transporter structure shown in Figure 1; Fig. 6 show B-B among Fig. 5 to cross-sectional schematic; Fig. 7 shows the enlarged drawing of C portion among Fig. 6; Fig. 8 shows the structural representation of driving-chain among Fig. 5, and the master that Fig. 9 shows collapsible scraper plate according to the invention looks sketch map; Figure 10 shows D-D cross-sectional schematic among Fig. 9.
To shown in Figure 10, large gradient roadheader provided by the invention also comprises folding scraper plate 9 like Fig. 5, and said folding scraper plate 9 comprises scrapes panel seat 91, bearing pin 92, scraper plate body 93; Said scraping on the driving-chain 61 that panel seat 91 is installed in said transporter 6; Said bearing pin 92 is installed in said scraping in the panel seat 91, and can rotate said scraping in the panel seat 91, and said scraper plate body 93 is installed on the said bearing pin 92; And can rotate with said bearing pin 92; Said scraping also is provided with limited block 94 on the panel seat 91, said limited block 94 is arranged on the rotate path of said scraper plate body 93 lower ends, and the axis of said bearing pin 92 is vertical (as shown in Figure 7 with the transporting direction of said transporter 6; Direction shown in the arrow a is the transporting direction of transporter 6, and the axis normal of bearing pin 92 is in paper).
Preferably; Said scraper plate body 93 comprises that one has the gusset of knuckle; When said scraper plate 9 launched, the lower vertical of said gusset was in the plane at conveyer belt 62 places of said transporter 6, and the angle between the conveyer belt 62 of the top of said gusset and said transporter 6 is an acute angle; Also be provided with ribs 931 on the said scraper plate body 93.Being designed with of gusset helps scraper plate 9 expansion automatically in the haul process, when backhaul, makes things convenient for the scraper plate gatherer that it is folded simultaneously.
Because scraper plate body 93 is made up of a gusset, directly bear the gravity of material like this gusset, can form stress in the bending place of gusset and concentrate, make gusset accelerated wear test easily and fracture, bring potential danger to production, the while also can influence production efficiency.The present invention is provided with a ribs 931 again on gusset, make the action of gravity of material on ribs 931, has strengthened the intensity of scraper plate body 93, has guaranteed to produce to carry out smoothly.
As shown in Figure 8, said scraper plate 9 is connected through bolt and nut n with said driving-chain 61.
As shown in Figure 6; Further; The discharge end of said transporter 6 below also is provided with the scraper plate gatherer, and said scraper plate gatherer comprises that one can make the folding guide strip with level and smooth gradient 63 of said gusset, and said guide strip 63 rear ends are connected with the link-supporting plate 64 parallel with said driving-chain 61.
Because scraper plate 9 is folding mechanism, therefore after accomplishing the haul process, should it be folded up and carry out the backhaul action; If do not add foldingly, then scraper plate 9 is will be very in the backhaul process unstable, breaks down easily; Because the height of scraper plate 9 is increased, as it not being folded transportation, then the mechanism of transporter will become very huge simultaneously; Make the integral body of development machine become very heavy, be not easy in the tunnel, tear open fortune and install that manufacturing cost increases simultaneously.
Scraper plate gatherer provided by the invention comprises a guide strip 63, and this guide strip 63 is arranged on the discharge end below of transporter, at this moment; Because scraper plate is seen material off, under the driving of driving-chain 61, continues to move downward, scraper plate 9 lets droop under the effect of self gravitation; Because gusset self has certain angle, so can being directed to plate 63, the gusset upper end progressively folds, as shown in Figure 7; J point expression scraper plate 9 has just got into guide strips 63, and 9 beginnings of K point expression scraper plate contact with guide strip 63, and is directed to plate 63 and folds; It is further folding that L point expression scraper plate 9 is directed to plate 63; M point expression scraper plate 9 is fully folded, and the scraper plate 9 that is folded afterwards is admitted to link-supporting plate 64, further transmission.
When the scraper plate that is folded 9 is transported to the feed end of transporter 6; Scraper plate 9 launches under the self gravitation effect; The height of scraper plate 9 increases to 3 times of original height; The haul material increases significantly, but because scraper plate 9 be a foldable, so the profile of transporter 6, weight, structure are also not obvious than the variation of conventional transport.Owing to adopt folding scraper plate 9, make that the haul angle maximum of transporter 6 can reach+10 °～+ 45 °, improved the haul ability of transporter 6 greatly, enhance productivity.
Figure 11 shows the structural representation according to dewatering installation one embodiment according to the invention; Figure 12 shows the structural representation at the another visual angle of structure shown in Figure 11.
Like Figure 11, shown in Figure 12; Dewatering installation provided by the invention comprises filter 81, drinking-water pipe 82 and suction pump (not shown); Said filter 81 comprises water tank 811 and is arranged on the filtration water cover 812 on the said water tank 811; Ponding gets into said water tank 811 through said filtration water cover 812, and said drinking-water pipe 82 is arranged on the inside of said water tank 811, and said drinking-water pipe 82 is connected with said suction pump.
Preferably; Said water tank 811 is arranged on said shovel board 2 front ends with said filtration water cover 812; Said filtration water cover 812 is provided with porous net grid 8121; The adapter mouth 83 that connects said suction pump is left at said shovel board 2 rears, and said suction pump comprises two, is connected both sides, said shovel board 2 rear end symmetrically.Suction pump is connected takes over mouthful 83 places, and is communicated with drinking-water pipe 82, and suction pump can be arranged on the shovel board 2, also can be arranged in body 3 or the back support 5.
Existing development machine, need stop development machine when the ponding in the tunnel reaches a certain amount of because of not containing dewatering installation of the present invention; And retreat, adopt suction pump earlier the ponding in the tunnel to be discharged, development machine readvances to work plane then; Start is tunneled, and especially when direction of fall tunnel, ponding can be sooner, accumulate quickly; Need development machine to shut down continually, carry out draining.Because in drainage procedure, development machine will be shut down and waited for,, reduce production capacity so influence operating efficiency.
After adopting dewatering installation of the present invention; Front end at shovel board 2 is provided with filter 81, and filter comprises water tank 811 and filters water cover 812, can rubble and other foreign material be filtered out like this; Ponding is got in the water tank 811 after filtering; Simultaneously in water tank 811 set inside drinking-water pipe 82 is arranged, drinking-water pipe 82 connects suction pump, and the water in the water tank 811 can be discharged from like this.This dewatering installation is arranged on the front end of development machine, makes development machine in work, can carry out draining, has guaranteed the continuity of development machine work, has improved operating efficiency and productivity ratio.
Through large gradient roadheader provided by the invention; Can solve draining, material transportation and the anti-skidding problem of fuselage when heavy grade tunnels effectively; The present invention in the Front-end Design of development machine dewatering installation, make development machine in headwork, to carry out draining, the development machine of having avoided causing because of draining is shut down and is waited for; Save time, enhance productivity; The present invention also back support of development machine is provided with pulling winch; When development machine tunneled downwards, rope chain one end of pulling winch was fixed pinnacled earth anchor place, and the other end is fixed on the turning cylinder of pulling winch; Development machine is drawn; Prevent that development machine from the downslide phenomenon taking place because of coefficient of road adhesion is little, avoid the generation of accident, the safety of protection workman and equipment; The present invention has also improved transporter; Folding scraper plate is set on transporter; Improve the height of scraper plate significantly, improved the freight volume of transporter, kept appearance and size, weight, the structure of transporter not to change simultaneously on a large scale; Make that transporter is simple in structure, in light weight, appearance and size is little, be convenient to the disintegration transportation of development machine in the tunnel.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. large gradient roadheader; Comprise cutting units (1), shovel board (2), body (3), running part (4), back support (5), transporter (6), hydraulic system, electrical control division (11), water system (12) and operating desk (13); It is characterized in that; Also comprise pulling winch (7), dewatering installation and folding scraper plate (9), said pulling winch (7) is installed in said back and supports on (5), and said pulling winch (7) is connected with earth anchor (b) in being fixed on the tunnel through rope chain (71); Said dewatering installation is arranged on the front end of said large gradient roadheader, and said folding scraper plate (9) is arranged on the said transporter (6).
2. large gradient roadheader according to claim 1; It is characterized in that said pulling winch (7) comprises hydraulic wireline winch or electric winch, said hydraulic wireline winch is by hydraulic pump drive; Said electric winch is driven by flame-proof electric motor; One end of said rope chain (71) is fixed on the earth anchor (b) of eminence in the tunnel, and the other end twists on the turning cylinder (72) of said pulling winch (7), the said turning cylinder (72) of said pulling winch (7) through the said rope chain (71) of reeling to draw said development machine.
3. large gradient roadheader according to claim 1 is characterized in that, said rope chain (71) comprises wire rope or iron chains.
4. according to arbitrary described large gradient roadheader in the claim 1 to 3, it is characterized in that the operating mechanism of said pulling winch (7) is installed on the operating desk of said large gradient roadheader.
5. large gradient roadheader according to claim 1; It is characterized in that; Said dewatering installation comprises filter (81), drinking-water pipe (82) and suction pump, and said filter (81) comprises water tank (811) and be arranged on the filtration water cover (812) on the said water tank (811) that ponding gets into said water tank (811) through said filtration water cover (812); Said drinking-water pipe (82) is arranged on the inside of said water tank (811), and said drinking-water pipe (82) is connected with said suction pump.
6. large gradient roadheader according to claim 5; It is characterized in that; Said water tank (811) and said filtration water cover (812) are arranged on said shovel board (2) front end, and said filtration water cover (812) is provided with porous net grid (8121), and the adapter mouth (83) that connects said suction pump is left at said shovel board (2) rear; Said suction pump comprises two, is connected said shovel board (2) both sides, rear end symmetrically.
7. large gradient roadheader according to claim 1; It is characterized in that; Said folding scraper plate (9) comprises scrapes panel seat (91), bearing pin (92), scraper plate body (93), said scraping on the driving-chain (61) that panel seat (91) is installed in said transporter (6), and said bearing pin (92) is installed in said scraping in the panel seat (91); And can rotate said scraping in the panel seat (91); Said scraper plate body (93) is installed on the said bearing pin (92), and can rotate with said bearing pin (92), and said scraping also is provided with limited block (94) on the panel seat (91); Said limited block (94) is arranged on the rotate path of said scraper plate body (93) lower end, and the axis of said bearing pin (92) is vertical with the transporting direction of said transporter (6).
8. large gradient roadheader according to claim 7; It is characterized in that; Said scraper plate body (93) comprises that one has the gusset of knuckle; When said scraper plate (9) launched, the lower vertical of said gusset was in the plane at conveyer belt (62) place of said transporter (6), and the angle between the conveyer belt (62) of the top of said gusset and said transporter (6) is an acute angle; Also be provided with ribs (931) on the said scraper plate body (93).
9. large gradient roadheader according to claim 8; It is characterized in that; The discharge end below of said transporter (6) also is provided with the scraper plate gatherer; Said scraper plate gatherer comprises that one can make the folding guide strip with level and smooth gradient (63) of said gusset, and said guide strip (63) rear end is connected with the link-supporting plate (64) parallel with said driving-chain (61).
10. according to arbitrary described large gradient roadheader in the claim 7 to 9, it is characterized in that the haul angle of said transporter (6) is+10 °～+ 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110287799.3A CN102337888B (en) | 2011-09-26 | 2011-09-26 | Large-gradient development machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110287799.3A CN102337888B (en) | 2011-09-26 | 2011-09-26 | Large-gradient development machine |
Publications (2)
| Publication Number | Publication Date |
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| CN102337888A true CN102337888A (en) | 2012-02-01 |
| CN102337888B CN102337888B (en) | 2014-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110287799.3A Expired - Fee Related CN102337888B (en) | 2011-09-26 | 2011-09-26 | Large-gradient development machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505595A (en) * | 2018-09-29 | 2019-03-22 | 宁波精壹机械制造有限公司 | One kind being suitable for large gradient roadheader |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080072434A1 (en) * | 2006-09-27 | 2008-03-27 | Caterpillar Inc. | Reversible Bolt-On Piercing Tip |
| CN101358528A (en) * | 2008-09-22 | 2009-02-04 | 河北冀凯实业集团有限公司 | Roadheader with remote control member |
| CN201258739Y (en) * | 2008-09-18 | 2009-06-17 | 河北冀凯实业集团有限公司 | Development machine capable of loading coal onto transport vehicle directly |
| CN202300386U (en) * | 2011-09-26 | 2012-07-04 | 石家庄中煤装备制造股份有限公司 | Large-gradient tunnelling machine |
-
2011
- 2011-09-26 CN CN201110287799.3A patent/CN102337888B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080072434A1 (en) * | 2006-09-27 | 2008-03-27 | Caterpillar Inc. | Reversible Bolt-On Piercing Tip |
| CN201258739Y (en) * | 2008-09-18 | 2009-06-17 | 河北冀凯实业集团有限公司 | Development machine capable of loading coal onto transport vehicle directly |
| CN101358528A (en) * | 2008-09-22 | 2009-02-04 | 河北冀凯实业集团有限公司 | Roadheader with remote control member |
| CN202300386U (en) * | 2011-09-26 | 2012-07-04 | 石家庄中煤装备制造股份有限公司 | Large-gradient tunnelling machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505595A (en) * | 2018-09-29 | 2019-03-22 | 宁波精壹机械制造有限公司 | One kind being suitable for large gradient roadheader |
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| Publication number | Publication date |
|---|---|
| CN102337888B (en) | 2014-01-08 |
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