CN101457641B - Development machine cutting telescopic arm with pipeline lifting chain - Google Patents
Development machine cutting telescopic arm with pipeline lifting chain Download PDFInfo
- Publication number
- CN101457641B CN101457641B CN2008100802882A CN200810080288A CN101457641B CN 101457641 B CN101457641 B CN 101457641B CN 2008100802882 A CN2008100802882 A CN 2008100802882A CN 200810080288 A CN200810080288 A CN 200810080288A CN 101457641 B CN101457641 B CN 101457641B
- Authority
- CN
- China
- Prior art keywords
- telescopic arm
- plate
- pipeline
- oil cylinder
- development machine
- 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.)
- Active
Links
Images
Landscapes
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Supports For Pipes And Cables (AREA)
Abstract
The invention relates to a cutting telescopic arm of a development machine with a pipeline tow chain, mainly comprising a telescopic arm, a telescopic oil cylinder, an oil cylinder base, a front end plate, a rear end plate, a guidance key, a pipeline tow chain, an electric motor, an electric motor flange and a pipeline, wherein, the cutting electric motor is arranged in the telescopic arm and extends and retracts along with the telescopic arm; the pipeline tow chain is arranged in the telescopic arm; and water inlet and outlet pipes, a lubricating oil pipe and electric motor cables are respectively arranged in the pipeline tow chain, are connected with the corresponding pipeline of the development machine, and extend and retract along with the telescopic arm. The cutting telescopic arm has the advantages of reduced volume, increased revolution area, orderly pipeline connection through corresponding arrangement, free extension and retraction of the telescopic oil cylinder, safer running, reasonable design, compact structure, convenient installation and usage and high safety, stability and reliability, can be used in total rock tunnels of coal mines, can greatly improve the production efficiency of the development machine, and is the ideal cutting telescopic arm of the cantilever type development machine.
Description
Technical field
The present invention relates to a kind of tunneling machine cutting telescopic arm, belong to the design of boom-type roadheader component and the technical field of manufacturing with pipeline holder chain.
Background technology
The most frequently used extractive equipment is the tunnel boom-type roadheader under the big-and-middle-sized coal mine, and development machine most principal work parts are cut telescopic arm and cutterhead, is directly to excavate tunnel or coal seam, and operating environment is very abominable.
Boom-type roadheader disposes the cut telescopic arm of use now, and mostly volume is bigger; cutting motor is mostly rearmounted; be fixed on the revolution forked frame of development machine; not flexible with telescopic arm; its matching used cable, lubricating oil pipe, cooling water pipe, breathing pipeline do not obtain unclogging and readjusting protection; potential safety hazard has been buried in flexible operation to cut; because the design of cut telescoping mechanism is reasonable inadequately; use in the total rock tunnel that causes boom-type roadheader to be difficult under the coal mine; the application of development machine is greatly limited, causes that drivage efficiency is low, the security presence drawback.
Summary of the invention
Goal of the invention
Purpose of the present invention is exactly at disadvantages of background technology, design a kind of cut telescopic arm of novel band pipeline drag chain, make cutting motor, various pipeline all place in the telescopic arm, cutting motor, pipeline drag chain are stretched with telescopic arm, to reduce the telescopic arm volume, increase the safety of flexible operation, improve the production efficiency of excavation operation, boom-type roadheader can be used in the total rock tunnel under coal mine.
Technical scheme
Primary structure of the present invention by: telescopic arm, telescopic oil cylinder, oil cylinder seat, front end-plate, end plate, supporting seat, feather key, pipeline drag chain, cutting motor, motor flange dish, backplate, pipeline are formed; Telescopic arm 1 is anterior for front end-plate 9, rear portion are end plate 10, and end plate 10 is fixedly connected by bolt 32 and supporting seat 2; Be provided with left and right sides telescopic oil cylinder 3 on the top of telescopic arm 1,4, oil cylinder seat 5 before left side telescopic oil cylinder 3 is fixed on, between the back oil cylinder seat 7, oil cylinder seat 6 before right telescopic oil cylinder 4 is fixed on, between the back oil cylinder seat 8, preceding oil cylinder seat 5,6 are fixedly connected with telescopic front end-plate 9, back oil cylinder seat 7,8 are fixedly connected with end plate 10, end plate 10 connects with supporting seat 2, and it is fixing by bolt 32, supporting seat 2 is by left and right sides mounting groove 73,74 connect with the hoist cylinder of development machine, left and right sides mounting groove 39,40 connect room groove 29 with the development machine rotary disk, breathe cover plate 44, corresponding with the respiration mechanism position on the development machine and cover; Between telescopic arm 1 top, left and right sides telescopic oil cylinder 3,4, be provided with left and right sides feather key 17,18, be provided with left and right sides feather key 19,20 in telescopic arm 1 bottom; Left and right sides at telescopic arm 1 is provided with left and right sides installing port 11,12, and installing port 11,12 front portions in the left and right sides are cable port 14; In the telescopic arm 1 is telescopic cavity 36, be provided with motor 41, motor flange dish 42, pipeline drag chain 30 in the telescopic cavity 36, motor 41 front portions connect with front end-plate 9, and fixing by bolt 49, the rear portion connects with motor flange dish 42 slidably, and is fixed by bolt 66,67, telescopic arm 1 middle part is provided with technology sprue 75, and fixing by bolt 66, motor 41 sidepieces are provided with junction box 43, and junction box 43 connects with the electric control box of development machine by cable, pipeline drag chain 30, cable port 14; Pipeline drag chain 30 1 ends are fixed on the drag chain seat 15, and the other end is fixed on the drag chain seat 16, and the water inlet 63 on the pipeline drag chain 30, delivery port 64, lubrication oil crossing 65, cable port 62 connect with each pipeline of development machine respectively; Front end-plate 9 connects with the cutterhead of development machine by screw 72; Telescopic arm 1 outside is provided with backplate 58,59; Be provided with between the front portion of telescopic arm 1 and the front end-plate 9 between alignment pin 77, rear portion and the motor flange dish 42 and be provided with alignment pin 76; Telescopic oil cylinder 3,4 connects with the hydraulic mechanism of development machine.
Described supporting seat 2 is rectangular, supporting seat 2 is by mainboard, otic placode, mounting groove, the room groove is formed, the front portion is a mainboard, the rear portion is provided with otic placode 25,26,27,28, be provided with left mounting groove 39 between the otic placode 25 and 26,40, be provided with right mounting groove 73 between the otic placode 27 and 28,74, it between otic placode 26 and 27 middle room groove 29, left and right sides sidepiece is provided with left-and- right guard board 23,24, at otic placode 25,26,27, be respectively equipped with axis hole in 28, erecting bed 45,46,47,48, left and right sides mounting groove 73,74 connect with the hoist cylinder of development machine, left and right sides mounting groove 39,40 connect with the rotary disk of development machine, and room groove 29 is corresponding with the respiration mechanism position of development machine and cover, and the mainboard of supporting seat 2 is provided with screw, be fixedly connected by the end plate 10 of bolt 32 with telescopic arm 1, one is provided with back suspension ring 22 about supporting seat 2.
Described front end-plate 9 is rectangular, and the centre of front end-plate 9 is a circular discs 51, and circular discs 51 middle parts are motor hole 50, is provided with several bolts 49, screw 72 around 50 outsides, motor hole, and bolt 49 is fixedly connected with motor 41, and screw 72 connects with the cutterhead of development machine; Front end-plate 9 bottoms are provided with bolt 33,34, and link to each other with crash bar 37,38, the both sides of front end-plate 9 are furnished with several bolts 52,53, and connect with the cutterhead of development machine, be provided with support plate 54,55,56,57 in front end-plate 9 left sides, patch with oil cylinder seat 5,6 and connect, the corresponding connection of cutterhead of front end-plate 9 right front portion and development machine, about portion be provided with before suspension ring 21.
Described pipeline drag chain 30 is a strip, the main body of pipeline drag chain 30 is a hauling-chain frame 60, be provided with several drag chain support plates 61 in the middle of the hauling-chain frame 60, on hauling-chain frame 60, drag chain support plate 61, be provided with cable port 62, water inlet 63, delivery port 64, lubrication oil crossing 65, drag chain support plate 61 two ends are fixed on the drag chain seat 15,16, the cable that cable port 65 penetrates connects with motor 41, the pipeline that water inlet 63, delivery port 64 penetrate connects with the cooling line of motor, and the pipeline that lubrication oil crossing 65 penetrates connects with the lubricant passage way of motor.
Described motor flange dish 42 is a disc, and the outside is provided with four guiding keyways 13, and the end is provided with several screws 68, installing hole 69, middlely is flange endoporus 70.
Beneficial effect
The present invention compares with background technology has tangible advance, it is big at boom-type roadheader telescopic arm volume, rotate limited, the drawback that pipeline is messy, carried out new design, the motor of cutting mechanism is placed in the telescopic arm, and rotate flexible with telescopic arm, the cooling water pipe that telescopic arm and motor thereof use, the lubricant passage way pipe, motor cable all places in the pipeline drag chain, the pipeline drag chain places the telescopic arm inner chamber, carrying out ordered pair should connect, and flexible with the telescopic arm rotation, cut telescopic arm volume size is dwindled, rotate more flexible, pipeline connects safer, can use in the total rock tunnel under coal mine, this mechanism design is reasonable, compact conformation, easy to install, safety and stability is reliable, is used with cutting head of roadheader, and telescopic oil cylinder is capable of expansion and contraction, can increase substantially the production efficiency of development machine, be the cut telescopic arm of very good boom-type roadheader.
Description of drawings
Fig. 1 is the overall structure front view
Fig. 2 is the overall structure vertical view
Fig. 3 is the D-D sectional drawing of Fig. 1
Fig. 4 is the overall structure left view
Fig. 5 is the overall structure right view
Fig. 6 is for being the A-A sectional drawing of Fig. 5
Fig. 7 is a pipeline drag chain front view
Fig. 8 is a pipeline drag chain vertical view
Fig. 9 is a motor flange dish front view
Figure 10 is the B-B sectional drawing of Fig. 9
Figure 11 is each connecting relation figure of telescopic arm
Shown in the figure, list of numerals is as follows:
1, telescopic arm, 2, supporting seat, 3, left side telescopic oil cylinder, 4, right telescopic oil cylinder, 5, left front oil cylinder seat, 6, left back oil cylinder seat, 7, right front oil cylinder seat, 8, right back oil cylinder seat, 9, front end-plate, 10, end plate, 11, left side installing port, 12, right installing port, 13, the guiding keyway, 14, cable port, 15, the drag chain seat, 16, the drag chain seat, 17, upper left feather key, 18, upper right feather key, 19, the lower-left feather key, 20, the bottom right feather key, 21, preceding suspension ring, 22, back suspension ring, 23, left side backplate, 24, right backplate, 25, otic placode, 26, otic placode, 27, otic placode, 28, otic placode, 29, the room groove, 30, the pipeline drag chain, 31, bolt, 32, bolt, 33, bolt, 34, bolt, 35, bolt, 36, telescopic cavity, 37, crash bar, 38, crash bar, 39, left side mounting groove, 40, right mounting groove, 41, motor, 42, the motor flange dish, 43, junction box, 44, breathe cover plate, 45, erecting bed, 46, erecting bed, 47, erecting bed, 48, erecting bed, 49, bolt, 50, the motor hole, 51, circular discs, 52, bolt, 53, bolt, 54, support plate, 55, support plate, 56, support plate, 57, support plate, 58, backplate, 59, backplate, 60, hauling-chain frame, 61, the drag chain support plate, 62, cable port, 63, water inlet, 64, delivery port, 65, the lubrication oil crossing, 66, bolt, 67, bolt, 68, screw, 69, installing hole, 70, the flange endoporus, 71, bolt, 72, screw, 73, mounting groove, 74, mounting groove, 75, the technology sprue, 76, alignment pin, 77, alignment pin.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing:
Shown in Fig. 1,2,3,4,5,6, be tunneling machine cutting telescopic arm overall structure figure.
In the middle of the telescopic arm 1 is telescopic cavity 36, is provided with motor 41, motor flange dish 42 in the telescopic cavity 36, and the motor sidepiece is provided with junction box 43, and motor 41 right parts and front end-plate 9 are fixedly connected, and flexible with front end-plate 9; Rear portions are provided with drag chain seat 15,16, pipeline drag chain 30 in the telescopic cavity 36, and the intake- outlet 63,64 on the pipeline drag chain 30, lubrication oil crossing 65, cable port 62 connect with corresponding pipeline on the development machine, and arrange in order, stretch thereupon.
Left and right sides telescopic oil cylinder the 3, the 4th, the power resources of telescopic arm 1, connect with the hydraulic mechanism of development machine, oil cylinder seat 7,8 is a pedestal after the telescopic oil cylinder 3,4, connect with preceding oil cylinder seat 5,6, and fixing with front end-plate 9, and promote front end-plate 9, motor 41, motor flange dish 42, pipeline drag chain 30 and stretch out forward together, drive cutterhead simultaneously and carry out the cut operation, flexible operation action is finished in telescopic arm 1 withdrawal after cut is finished.
Front end-plate 9 parts for taking over from the past and setting a new course for the future, the anterior cutterhead that connects carries out excavation operation, the rear portion connects telescopic oil cylinder, motor, the motor flange dish stretches out, withdraw, is crucial, that intensity is good, strength greatly, impact resistance.
Supporting seat 2 is parts that whole development machine is taken over from the past and set a new course for the future, and anterior end plate 10 with telescopic arm 1 is fixing, and the rotary disk of rear portion and development machine is fixed, and install firmly, intensity good, impact resistance.
After installing, each one of boom-type roadheader can do the action of bobbing and weaving.
Shown in Fig. 7,8, be pipeline drag chain 30 structure charts, hauling-chain frame 60, drag chain support plate 61 want that intensity is good, toughness is high, and correct position is wanted at intake- outlet 63,64, cable port 62, lubrication oil crossing 65, and connecting relation is reasonable.
Shown in Fig. 9,10, be motor flange dish 42 structure charts, motor flange dish 42 is disc, and it is stressed to slide at motor 41 rear portions, and play the guiding role, and intensity good.
Shown in Figure 11, be each connecting relation figure of telescopic arm, motor 41, motor flange dish 42 is installed in the telescopic arm 1 and is connected with front end-plate 9, installation pipeline drag chains 30 in the telescopic cavity 36, and with the corresponding pipeline connection of motor 41, development machine; The end plate 10 and the supporting seat 2 of telescopic arm 1 are fixedly connected; Telescopic arm 1 top is provided with telescopic oil cylinder 3,4, and connects with front end-plate 9, end plate 10 through oil cylinder seat 5,6,7,8, and it is flexible together to drive front end-plate 9, motor 41, motor flange dish 42, pipeline drag chain 30, finishes flexible cut operation function.
Claims (5)
1. tunneling machine cutting telescopic arm with pipeline holder chain is characterized in that: primary structure by: telescopic arm, telescopic oil cylinder, oil cylinder seat, front end-plate, end plate, supporting seat, feather key, pipeline holder chain, cutting motor, motor flange dish, backplate, pipeline are formed; Telescopic arm (1) is anterior for front end-plate (9), rear portion are end plate (10), and end plate (10) is fixedly connected by bolt (32) and supporting seat (2); Top at telescopic arm (1) is provided with a left side, right telescopic oil cylinder (3,4), oil cylinder seat (5) before left side telescopic oil cylinder (3) is fixed on first, between the first back oil cylinder seat (7), oil cylinder seat (6) before right telescopic oil cylinder (4) is fixed on second, between the second back oil cylinder seat (8), first, oil cylinder seat (5 before second, 6) be fixedly connected with telescopic front end-plate (9), first, the second back oil cylinder seat (7,8) be fixedly connected with end plate (10), end plate (10) connects with supporting seat (2), and it is fixing by bolt (32), supporting seat (2) is by the 3rd, the 4th left and right sides mounting groove (73,74) connect with the hoist cylinder of development machine, first, second left and right sides mounting groove (39,40) connect room groove (29) with the development machine rotary disk, it is corresponding with the respiration mechanism position on the development machine and cover to breathe cover plate (44); Between telescopic arm (1) top, left and right telescopic oil cylinder (3,4), be provided with first, second left and right sides feather key (17,18), be provided with the 3rd, the 4th left and right sides feather key (19,20) in telescopic arm (1) bottom; Left and right sides at telescopic arm (1) is provided with left and right sides installing port (11,12), and left and right sides installing port (11,12) front portion is cable port (14); In the telescopic arm (1) is telescopic cavity (36), be provided with motor (41), flange (42), pipeline holder chain (30) in the telescopic cavity (36), motor (41) is anterior to be connected with front end-plate (9), and it is fixing by bolt (49), the rear portion connects with motor flange dish (42) slidably, and it is fixing by bolt (66,67), telescopic arm (1) middle part is provided with technology sprue (75), and it is fixing by bolt (66), motor (41) sidepiece is provided with junction box (43), and junction box (43) connects with the electric control box of development machine by cable, pipeline holder chain (30), cable port (14); Pipeline holder chain (30) one ends are fixed on the holder chain seat (15), the other end is fixed on the holder chain seat (16), and the water inlet (63) on the pipeline holder chain (30), delivery port (64), lubrication oil crossing (65), cable port (62) connect with each pipeline of development machine respectively; Front end-plate (9) connects with the cutterhead of development machine by screw (72); Telescopic arm (1) outside is provided with backplate (58,59); Be provided with between the front portion of telescopic arm (1) and the front end-plate (9) between second alignment pin (77), rear portion and the motor flange dish (42) and be provided with first alignment pin (76); Left and right telescopic oil cylinder (3,4) connects with the hydraulic mechanism of development machine.
2. a kind of tunneling machine cutting telescopic arm according to claim 1 with pipeline holder chain, it is characterized in that: described supporting seat (2) is rectangular, supporting seat (2) is by mainboard, otic placode, mounting groove, the room groove is formed, the front portion is a mainboard, the rear portion is provided with first, second, the 3rd, the 4th otic placode (25,26,27,28), be provided with first between first otic placode (25) and second otic placode (26), second left and right sides mounting groove (39,40), be provided with the 3rd between third ear plate (27) and the 4th otic placode (28), the 4th left and right sides mounting groove (73,74), between second otic placode (26) and third ear plate (27), be middle room groove (29), left and right sides sidepiece is provided with left-and-right guard board (23,24), first, second, the 3rd, the 4th otic placode (25,26,27,28) be respectively equipped with axis hole in, erecting bed (45,46,47,48), the 3rd, the 4th left and right sides mounting groove (73,74) connect with the hoist cylinder of development machine, first, second left and right sides mounting groove (39,40) connect with the rotary disk of development machine, room groove (29) is corresponding with the respiration mechanism position of development machine and cover, the mainboard of supporting seat (2) is provided with screw, be fixedly connected by the end plate (10) of bolt (32) with telescopic arm (1), portion is provided with back suspension ring (22) about supporting seat (2).
3. a kind of tunneling machine cutting telescopic arm according to claim 1 with pipeline holder chain, it is characterized in that: described front end-plate (9) is rectangular, the centre of front end-plate (9) is circular discs (51), circular discs (51) middle part is motor hole (50), be provided with several bolts (49), screw (72) around outside, motor hole (50), bolt (49) is fixedly connected with motor (41), and screw (72) connects with the cutterhead of development machine; Front end-plate (9) bottom is provided with bolt (33,34), and link to each other with crash bar (37,38), the both sides of front end-plate (9) are furnished with several bolts (52,53), and connect with the cutterhead of development machine, be provided with support plate (54,55,56,57) in front end-plate (9) left side, patch with oil cylinder seat (5,6) and connect, the corresponding connection of cutterhead of front end-plate (9) right front portion and development machine, about portion be provided with preceding suspension ring (21).
4. a kind of tunneling machine cutting telescopic arm according to claim 1 with pipeline holder chain, it is characterized in that: described pipeline holder chain (30) is a strip, the main body of pipeline holder chain (30) is chain supporting frame (60), be provided with several holder chain support plates (61) in the middle of the chain supporting frame (60), in chain supporting frame (60), holder chain support plate (61) is provided with cable port (62), water inlet (63), delivery port (64), lubrication oil crossing (65), holder chain support plate (61) two ends are fixed on holder chain seat (15,16) on, the cable that cable port (65) penetrates connects with motor (41), water inlet (63), the pipeline that delivery port (64) penetrates connects with the cooling line of motor, and the pipeline that lubrication oil crossing (65) penetrate connects with the lubricant passage way of motor.
5. a kind of tunneling machine cutting telescopic arm according to claim 1 with pipeline holder chain, it is characterized in that: described motor flange dish (42) is disc, the outside is provided with four guiding keyways (13), and the end is provided with several screws (68), installing hole (69), middlely is flange endoporus (70).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100802882A CN101457641B (en) | 2008-12-29 | 2008-12-29 | Development machine cutting telescopic arm with pipeline lifting chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100802882A CN101457641B (en) | 2008-12-29 | 2008-12-29 | Development machine cutting telescopic arm with pipeline lifting chain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101457641A CN101457641A (en) | 2009-06-17 |
| CN101457641B true CN101457641B (en) | 2011-03-02 |
Family
ID=40768737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100802882A Active CN101457641B (en) | 2008-12-29 | 2008-12-29 | Development machine cutting telescopic arm with pipeline lifting chain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101457641B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182455A (en) * | 2011-03-31 | 2011-09-14 | 安徽山河矿业装备股份有限公司 | Expansion device of hard rock tunneling machine |
| CN103056573B (en) * | 2012-12-13 | 2014-11-05 | 长沙中联消防机械有限公司 | Welding and fixing tool of telescopic oil cylinder base and positioning method of telescopic oil cylinder base |
| CN104454839B (en) * | 2014-11-19 | 2017-06-27 | 浙江捷昌线性驱动科技股份有限公司 | A kind of telescoping tube linkage |
| CN110318750A (en) * | 2019-04-28 | 2019-10-11 | 中国煤炭科工集团太原研究院有限公司 | A kind of caterpillar chassis with slipping mechanism |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6431654B1 (en) * | 2000-07-10 | 2002-08-13 | Eimco Llc | Mining machine having an extendable and retractable rotor arm and method of repairing an extendable and retractable rotor arm assembly |
| CN200982195Y (en) * | 2006-12-06 | 2007-11-28 | 娄底博盛科技有限公司 | Small-sized cantilevered tunneller for coal roadway |
| CN201363143Y (en) * | 2008-12-29 | 2009-12-16 | 煤炭科学研究总院太原研究院 | Cutting telescopic arm of heading machine with pipeline supporting chain |
-
2008
- 2008-12-29 CN CN2008100802882A patent/CN101457641B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6431654B1 (en) * | 2000-07-10 | 2002-08-13 | Eimco Llc | Mining machine having an extendable and retractable rotor arm and method of repairing an extendable and retractable rotor arm assembly |
| CN200982195Y (en) * | 2006-12-06 | 2007-11-28 | 娄底博盛科技有限公司 | Small-sized cantilevered tunneller for coal roadway |
| CN201363143Y (en) * | 2008-12-29 | 2009-12-16 | 煤炭科学研究总院太原研究院 | Cutting telescopic arm of heading machine with pipeline supporting chain |
Non-Patent Citations (2)
| Title |
|---|
| 杨春海.掘进机内伸缩截割机构的改进.科技情报开发与经济.2007,17(31), * |
| 王喜胜.悬臂式掘进机截割回路主要液压参数的确定.煤矿机械.1999,(10), * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101457641A (en) | 2009-06-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106499401B (en) | A kind of super-large-diameter shield machine normal pressure tool changing device and method | |
| CN101457641B (en) | Development machine cutting telescopic arm with pipeline lifting chain | |
| CN103061673A (en) | Multifunctional micropile drilling machine | |
| CN102953735A (en) | Composite soil pressure balance shield with front support and back support | |
| CN208106466U (en) | Pick shield windlass | |
| CN113914883B (en) | Development machine and unilateral support shoe device thereof | |
| CN201363143Y (en) | Cutting telescopic arm of heading machine with pipeline supporting chain | |
| CN104265314B (en) | The multiple degrees of freedom switching device of advanced rig in shield excavation machine | |
| CN203081476U (en) | Protecting device for hydraulic support | |
| CN204357347U (en) | A kind of new type mining drilling apparatus | |
| CN203547745U (en) | Temporary support device of heading machine | |
| CN103410441A (en) | Rotary coal mine underground tunnel drilling rig with small platform | |
| CN109779650A (en) | A kind of tunnel piercing device | |
| CN210178354U (en) | Front shield body of small-section shield tunneling machine for coal mine | |
| CN110130914B (en) | Front shield body of small-section shield tunneling machine for coal mine | |
| CN201606075U (en) | Digging protection machinery | |
| CN210178347U (en) | Coal mining tunneling equipment with drill bit convenient to replace | |
| CN209195260U (en) | A kind of no-dig technique drilling machine with drill rod bracket structure | |
| CN104555153B (en) | Turn round direct acting arch breaking apparatus | |
| CN207278285U (en) | A kind of advance support of double cutting units anchor driving machines | |
| CN110374621B (en) | Hard rock TBM multifunctional top shield | |
| CN217761038U (en) | Head-on supporting device of roadheader | |
| CN102031968B (en) | Tunnelling and shoring integrated machine and telescopic boom thereof | |
| CN108487913A (en) | A kind of cutterhead and shield machine | |
| CN216898970U (en) | Protective cover applied to drill jumbo |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |