CN102031797B - Mining hydraulic excavator - Google Patents

Mining hydraulic excavator Download PDF

Info

Publication number
CN102031797B
CN102031797B CN2010106020867A CN201010602086A CN102031797B CN 102031797 B CN102031797 B CN 102031797B CN 2010106020867 A CN2010106020867 A CN 2010106020867A CN 201010602086 A CN201010602086 A CN 201010602086A CN 102031797 B CN102031797 B CN 102031797B
Authority
CN
China
Prior art keywords
hydraulic
big arm
forearm
hydraulic cylinder
horizontal axis
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
Application number
CN2010106020867A
Other languages
Chinese (zh)
Other versions
CN102031797A (en
Inventor
张希望
史长林
蔡济娟
于代文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liaoning Xinfeng mining (Group) Co., Ltd.
Original Assignee
LIAONING XINFENG MINE ELECTRICAL EQUIPMENT MANUFACTURING Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LIAONING XINFENG MINE ELECTRICAL EQUIPMENT MANUFACTURING Co Ltd filed Critical LIAONING XINFENG MINE ELECTRICAL EQUIPMENT MANUFACTURING Co Ltd
Priority to CN2010106020867A priority Critical patent/CN102031797B/en
Publication of CN102031797A publication Critical patent/CN102031797A/en
Application granted granted Critical
Publication of CN102031797B publication Critical patent/CN102031797B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Earth Drilling (AREA)

Abstract

The invention discloses a mining hydraulic excavator. A frame is provided with a rotary support; a horizontal shaft is arranged on a box body above the rotary support; the horizontal shaft is provided with a rotary driving device; the front end of the horizontal shaft is connected with a rotary box; a working device is hinged to the rotary box; a large arm and a small arm respectively consist of a front section and a rear section; the rotary driving device is connected between the front section and the rear section; the rotary box and the rear section of the large arm are hinged with a hydraulic cylinder; the front section of the large arm and the rear section of the small arm are hinged with the hydraulic cylinder; the front section of the small arm and a shovel loader are hinged with the hydraulic cylinder; and a walking device is arranged below the frame. The working device can axially rotate around the horizontal shaft; rear sections of the large arm and the small arm can axially rotate around the front sections; axial movement at three positions can make the front edge of the shovel loader form a certain angle along a horizontal plane, and the mining hydraulic excavator can excavate and shovel ground, side surfaces and a ceiling. During use in a mining well, the mining hydraulic excavator can meet the requirement of clearing ground inventory, drawing in a tunnel and performing other operation, and also can perform the operation of enlarging ribs and removing ceilings in the tunnel.

Description

Hydraulic excavator for mine
Technical field
The equipment that the present invention relates to a kind of hydraulic crawler excavator, particularly a kind of hydraulic crawler excavator and revolution are supported is connected the slewing equipment with big arm and forearm.
Background technology
Excavator is to peel off material and the haulage vehicle or unload the engineering machinery to rickyard of packing into scraper bowl from work plane shovel dress, and the manipulating object that excavator excavated mainly is soil, coal, silt and through soil and rock behind the preparatory pine.The hydraulic crawler excavator organic frame has revolution to support on the frame, the fixation side that revolution is supported is connected on the frame; The rotating side top that revolution is supported has casing, casing to be hinged with by the hinged equipment that forms of big arm, forearm and scraper bowl, and the big arm lower end of equipment is hinged on revolution and supports; The front end of big arm is hinged with forearm, and the front end of forearm is hinged with scraper bowl, and the front of scraper bowl is along teeth is arranged; Big arm and revolution are supported between the casing above the rotating side and are hinged with big arm hydraulic cylinder, are hinged with little arm hydraulic cylinder between big arm and the forearm, are hinged with the scraper bowl hydraulic cylinder between forearm and the scraper bowl; Hydraulic Station is arranged on the frame, and the frame below of excavator also is connected with running gear.In the prior art; The big arm of excavator is to be hinged on revolution to support with locating, and big arm and forearm all are one section rigid arm, and big arm can only drive the upper and lower activity of forearm in vertical direction; Excavator is when operation; Operations such as the front of scraper bowl is along parallel with the ground of level all the time, and this excavator can only be implemented to excavate to the manipulating object on ground, shovel is cut can not be to having the side of certain angle to implement to excavate with the manipulating object on the ceiling, shovel and operation such as cut with ground.Remove the ground stock and in the tunnel, undercut, split nation and remove the operation on top as often having in the down-hole, mine; Above-mentioned excavator of the prior art can only satisfy the operation of removing the ground stock and in the tunnel, undercuting etc., can not do the side, tunnel is split nation and removed the operation on top.
Summary of the invention
The objective of the invention is in order to overcome above-mentioned deficiency; Operation such as propose a kind ofly can implement to excavate, shovel is cut to the manipulating object on ground, also can be to having the side of certain angle to implement to excavate, shovel the hydraulic excavator for mine of operations such as cutting with the manipulating object on the ceiling with ground.
The present invention realizes with following method.
Invention scheme of the present invention is: be hinged on revolution to equipment and support on the rotating side on the horizontal axis on the square box; Be divided into forward and backward two sections with forearm big arm is little; Equipment can be rotated around horizontal axis; The leading portion of big arm and forearm can make operations such as excavator can be implemented to excavate to the manipulating object on ground, shovel is cut around the axial rotation of big arm back segment, also can be to ground operations such as the side of certain angle and the manipulating object on the ceiling are implemented to excavate, shovel is cut being arranged.
For realizing the foregoing invention scheme, the hydraulic excavator for mine organic frame has revolution to support above the frame; The fixation side that revolution is supported is connected on the frame, and there is casing the rotating side top that revolution is supported, and horizontal axis is arranged on the casing; The front end that horizontal axis stretches out casing is connected with the commentaries on classics case, and the drive unit of horizontal axis is arranged on the casing, changes case and is hinged with by the hinged successively equipment that forms of big arm, forearm and scraper bowl; The big arm lower end of equipment is hinged on changes on the case, and big arm and forearm are respectively to connect to form by forward and backward two sections, is connected with rotary connecting device respectively between forward and backward two sections of big arm and forearm; Rotary connecting device has central siphon that is connected in leading portion and the axle core that is connected in back segment, and central siphon is enclosed within outside the core, and rotary connecting device is connected with drive unit; Change between case and the big arm back segment and be hinged with big arm hydraulic cylinder; Be hinged with little arm hydraulic cylinder between the leading portion of big arm and the back segment of forearm, be hinged with the scraper bowl hydraulic cylinder between the leading portion of forearm and the scraper bowl, there is running gear the frame below.
Equipment of the present invention is hinged on that horizontal axis stretches out on the commentaries on classics case of casing front end on the casing; Horizontal axis on the casing is connected with the horizontal axis drive unit; The horizontal axis driver can drive equipment and rotate around horizontal axis, and there is certain angle on the edge, front that makes scraper bowl with the ground of level; Big arm and forearm all are to connect to form by forward and backward two sections; Be connected with a central siphon and an axle core between the front and rear sections respectively, central siphon and the drive unit of axle between the core can drive leading portion and rotate around the axle of back segment, and there is certain angle on the edge, front that makes scraper bowl with the ground of level; Equipment rotates around the axle of back segment around the leading portion of horizontal axis rotation and big arm, forearm; There is bigger angle on the edge, front that can make scraper bowl with the ground of level, and through design, there is the angle of 180 degree on the edge, front that can make scraper bowl and the ground of level; Can be to operations such as the side of certain angle and ceiling are implemented to excavate, shovel is cut being arranged with ground; When using, can not only satisfy, also can in the tunnel, split nation and remove the operation on top operation such as remove the ground stock and in the tunnel, undercut in the down-hole, mine.
Below in conjunction with accompanying drawing, the present invention is done explanation further.
Description of drawings
Fig. 1 is that the master of a kind of hydraulic excavator for mine of proposing according to invention scheme of the present invention looks sketch map;
Fig. 2 is the schematic top plan view of Fig. 1;
Fig. 3 is that sketch map cuts open in I place office among Fig. 1;
Fig. 4 is the A-A section partial schematic diagram of Fig. 3;
Fig. 5 is that sketch map cuts open in II place office among Fig. 1;
Fig. 6 is that sketch map cuts open in III place office among Fig. 1;
Fig. 7 is the B-B generalized section of Fig. 5;
Fig. 8, Fig. 9 be among Fig. 5 between big arm front and rear sections the office of cam-type central siphon and axle core drive unit cut open sketch map;
Figure 10 is that the drive unit of horizontal axis is that sketch map cuts open in I place office among Fig. 1 of motor reducer or hydraulic motor;
Figure 11 is that the horizontal axis drive unit is that sketch map cuts open in I place office among Fig. 1 of cam-type drive unit;
Figure 12 is the C-C generalized section of Figure 11;
Figure 13 ~ Figure 15 is that sketch map cuts open in the master office of looking of the wheeled horizontal axis drive unit of Figure 11 convexity;
Figure 16 is that the drive unit of central siphon and axle core is that enlarged diagram cuts open in II place office among Fig. 1 of motor reducer or hydraulic motor between big arm front and rear sections;
Figure 17 is that the drive unit of central siphon and axle core is that enlarged diagram cuts open in III place office among Fig. 1 of motor reducer or hydraulic motor between the forearm front and rear sections;
Figure 18 is that the running gear of frame below is to look sketch map through the master that hydraulic cylinder is connected with the hydraulic excavator for mine of wheel;
Figure 19 is that the running gear of frame below is that the master of the hydraulic crawler excavator of cterpillar drive looks sketch map.
The specific embodiment
Among Fig. 1 ~ Fig. 9, hydraulic excavator for mine organic frame 1 has revolution to support 2 above the frame; The fixation side that revolution is supported is connected on the frame, and there is casing 3 the rotating side top that revolution is supported, and horizontal axis 4 is arranged on the casing; The front end that horizontal axis stretches out casing is connected with changes case 5, changes case and is hinged with by big arm 6, forearm 7 and the hinged successively equipment that forms of scraper bowl 8, and the drive unit of horizontal axis is arranged on the casing; The drive unit of horizontal axis has slideway vertical with horizontal axis on casing 9, and having on the slideway to have the gear 11 that is meshed with tooth bar along the tooth bar 10 of slideway slip on the horizontal axis; Have the horizontal axis parallel with slideway to drive hydraulic cylinder 12 on the casing, horizontal axis drives the piston rod front end of hydraulic cylinder and an end of tooth bar is connected with connecting rod 13, and the big arm lower end of equipment is hinged on changes on the case; Big arm and forearm are respectively to connect to form by forward and backward two section 14,15 and 16,17, are connected with rotary connecting device 18,19 respectively between forward and backward two sections of big arm and forearm, and rotary connecting device has central siphon 20 that is connected in leading portion and the axle core 21 that is connected in back segment; Central siphon is enclosed within outside the core; Rotary connecting device is connected with the cam-type drive unit, and the axle core of cam-type drive unit is a pipe axle core, on the pipe axle core tube wall axial strip hole 22 is arranged; Threaded hole 23 is arranged on the central siphon wall; Back segment at big arm and forearm is fixed with big arm driving hydraulic cylinder 24 and forearm driving hydraulic cylinder 25 respectively, and the piston rod 26,27 that big arm and forearm drive hydraulic cylinder is inserted in corresponding pipe axle in-core respectively, and the axial strip hole and the interior radial peg 28 of the threaded hole on the central siphon wall that are inserted on the pipe axle core tube wall are arranged on the piston rod; Change between case and the big arm back segment and be hinged with big arm hydraulic cylinder 29; Be hinged with forearm hydraulic cylinder 30 between the leading portion of big arm and the back segment of forearm, be hinged with scraper bowl hydraulic cylinder 31 between the leading portion of forearm and the scraper bowl, there is slide type running gear 33 the frame below.
When the piston of above-mentioned big arm driving hydraulic cylinder and forearm driving hydraulic cylinder is flexible; Radial peg on the piston rod can endwisely slip in the axial strip hole on the pipe axle core tube wall; When sliding vertically in the axial strip hole of radial peg on pipe axle core tube wall; Be inserted in radial peg on the piston rod of threaded hole on the central siphon wall and can promote central siphon and rotate, promptly promote leading portion and rotate.Radial peg in the threaded hole of being inserted in is arranged on the piston rod of this drive unit, and threaded hole is equivalent to cam curve, and radial peg is equivalent to the cam connector, can rotate by drive shaft tube during the piston rod rectilinear motion, and be the equal of cam.
It is the gear rack actuating device of Driven by Hydraulic Cylinder that the drive unit of going up horizontal axis on the square box is supported in above-mentioned hydraulic excavator for mine revolution.It also can be motor reducer or hydraulic motor that the drive unit of going up horizontal axis on the square box is supported in the hydraulic excavator for mine revolution, also can be the cam-type drive unit.
Among Figure 10, the hydraulic excavator for mine revolution is supported to go up on the square box has motor reducer or hydraulic motor 34, and motor reducer or hydraulic motor output shaft link to each other with horizontal axis.
Among Figure 11 ~ Figure 15, it is the cam-type drive unit that the drive unit of going up horizontal axis on the square box is supported in the hydraulic excavator for mine revolution.Identical with the connection between above-mentioned big arm and forearm forward and backward two sections with the cam-type drive unit; Horizontal axis on the casing 35 is the central siphon 36 and pipe axle core 37 that is nested together; The front end that central siphon stretches out casing is connected on the commentaries on classics case 38, and pipe axle core is connected on the casing, on the pipe axle core tube wall axial strip hole 39 is arranged; Threaded hole 40 is arranged on the central siphon wall; Hydraulic cylinder 41 is arranged on the casing, and the piston rod 42 of hydraulic cylinder is inserted in pipe axle in-core, and the axial strip hole and the interior radial peg 43 of the threaded hole on the central siphon wall that are inserted on the pipe axle core tube wall are arranged on the piston rod.
Between central siphon between forward and backward two sections of above-mentioned big arm and forearm and the axle core cam-type drive unit is arranged.Between central siphon between forward and backward two sections of big arm and forearm and axle core also can be motor reducer or hydraulic motor.
Among Figure 16, the leading portion of big arm has motor reducer or hydraulic motor 44, and motor reducer or hydraulic motor output shaft link to each other with the axle core that is connected in big arm back segment.
Among Figure 17, the leading portion of forearm has motor reducer or hydraulic motor 45, and motor reducer or hydraulic motor output shaft link to each other with the axle core that is connected in the forearm back segment.
Running gear below the above-mentioned hydraulic excavator for mine frame is a slide plate, when moving, needs use in addition draw-gear, and hydraulic excavator for mine is required great effort when mobile.
In order to move easily, can be at frame positioned beneath wheel.
Among Figure 18, it can be rail wheel that there are wheel 46, wheel in the frame of hydraulic excavator for mine below, is connected with hydraulic cylinder 47 between wheel and the frame.During use, regain wheel with hydraulic cylinder, let frame drop on operation on the ground, stretch out wheel when mobile, wheel drops on the ground or drops on the track, has the hydraulic excavating locomotive of wheel to push away, draw walking on the ground or in orbit at an easy rate.
Above-mentioned hydraulic excavator for mine can not be walked certainly, in order to walk certainly, below the frame self-walking apparatus can be arranged, and self-walking apparatus has the drive unit of wheel and wheel.Self-walking apparatus can be the crawler type self-walking apparatus.
Among Figure 19, there is crawler type self-walking apparatus 48 frame of hydraulic excavating locomotive below.
When above-mentioned hydraulic excavator for mine used under mine, hydraulic test can be with the hydraulic power source under the mine.Also Hydraulic Station can be arranged on frame.
Among Fig. 1, Fig. 2, Figure 18, Figure 19, Hydraulic Station 49 is arranged on the frame of hydraulic excavator for mine.

Claims (10)

1. hydraulic excavator for mine, organic frame has revolution to support above the frame; The fixation side that revolution is supported is connected on the frame, and there is casing the rotating side top that revolution is supported, it is characterized in that: horizontal axis is arranged on the casing; The front end that horizontal axis stretches out casing is connected with the commentaries on classics case, and the drive unit of horizontal axis is arranged on the casing, changes case and is hinged with by the hinged successively equipment that forms of big arm, forearm and scraper bowl; The big arm lower end of equipment is hinged on changes on the case, and big arm and forearm are respectively to connect to form by forward and backward two sections, is connected with rotary connecting device respectively between forward and backward two sections of big arm and forearm; Rotary connecting device has central siphon that is connected in leading portion and the axle core that is connected in back segment, and central siphon is enclosed within outside the core, and rotary connecting device is connected with drive unit; Change between case and the big arm back segment and be hinged with big arm hydraulic cylinder; Be hinged with little arm hydraulic cylinder between the leading portion of big arm and the back segment of forearm, be hinged with the scraper bowl hydraulic cylinder between the leading portion of forearm and the scraper bowl, there is running gear the frame below.
2. by the described hydraulic excavator for mine of claim 1; It is characterized in that: the drive unit of described horizontal axis has slideway vertical with horizontal axis on casing; Having on the slideway can be along the tooth bar of slideway slip; The gear that is meshed with tooth bar is arranged on the horizontal axis, have the horizontal axis parallel with slideway to drive hydraulic cylinder on the casing, horizontal axis drives the piston rod front end of hydraulic cylinder and an end of tooth bar is connected with connecting rod.
3. by the described hydraulic excavator for mine of claim 1; It is characterized in that: the drive unit of described horizontal axis is the cam-type drive unit, and the horizontal axis of cam-type drive unit on casing is central siphon and the pipe axle core that is nested together, and the front end that central siphon stretches out casing is connected with the commentaries on classics case; Pipe axle core is connected on the casing; On the pipe axle core tube wall axial strip hole is arranged, on the central siphon wall, threaded hole is arranged, hydraulic cylinder is arranged on the casing; The piston rod of hydraulic cylinder is inserted in pipe axle in-core, and the axial strip hole and the interior radial peg of the threaded hole on the central siphon wall that are inserted on the pipe axle core tube wall are arranged on the piston rod.
4. by the described hydraulic excavator for mine of claim 1; It is characterized in that: the drive unit of described horizontal axis is motor reducer or hydraulic motor; Motor reducer or driving device for hydraulic motor have motor reducer or the hydraulic motor on square box in the hydraulic excavator for mine revolution support, and motor reducer or hydraulic motor output shaft link to each other with horizontal axis.
5. by claim 1,2,3 or 4 described hydraulic excavator for mine; It is characterized in that: the drive unit of rotary connecting device is the cam-type drive unit between forward and backward two sections of described big arm and forearm; The axle core of cam-type drive unit is a pipe axle core; On the pipe axle core tube wall axial strip hole is arranged, on the central siphon wall, threaded hole is arranged, be fixed with big arm respectively at the back segment of big arm and forearm and drive hydraulic cylinder and forearm driving hydraulic cylinder; The piston rod that big arm and forearm drive hydraulic cylinder is inserted in corresponding pipe axle in-core respectively, and the axial strip hole and the interior radial peg of the threaded hole on the central siphon wall that are inserted on the pipe axle core tube wall are arranged on the piston rod.
6. by claim 1,2,3 or 4 described hydraulic excavator for mine; It is characterized in that: the drive unit of rotary connecting device is motor reducer or hydraulic motor between forward and backward two sections of described big arm and forearm; Motor reducer or driving device for hydraulic motor have motor reducer or the hydraulic motor at big arm leading portion; Motor reducer or hydraulic motor output shaft link to each other with the axle core that is connected in big arm back segment; At the motor reducer or the hydraulic motor of forearm leading portion, motor reducer or hydraulic motor output shaft link to each other with the axle core that is connected in the forearm back segment.
7. by claim 1,2,3 or 4 described hydraulic excavator for mine, it is characterized in that: wheel or crawler type self-walking apparatus that the running gear of described frame below is slide plate, link to each other with hydraulic cylinder.
8. by the described hydraulic excavator for mine of claim 5, it is characterized in that: wheel or crawler type self-walking apparatus that the running gear of described frame below is slide plate, link to each other with hydraulic cylinder.
9. by the described hydraulic excavator for mine of claim 6, it is characterized in that: wheel or crawler type self-walking apparatus that the running gear of described frame below is slide plate, link to each other with hydraulic cylinder.
10. by claim 1,2,3 or 4 described hydraulic excavator for mine, it is characterized in that: on the described frame Hydraulic Station is arranged.
CN2010106020867A 2010-12-22 2010-12-22 Mining hydraulic excavator Active CN102031797B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010106020867A CN102031797B (en) 2010-12-22 2010-12-22 Mining hydraulic excavator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010106020867A CN102031797B (en) 2010-12-22 2010-12-22 Mining hydraulic excavator

Publications (2)

Publication Number Publication Date
CN102031797A CN102031797A (en) 2011-04-27
CN102031797B true CN102031797B (en) 2012-01-11

Family

ID=43885199

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010106020867A Active CN102031797B (en) 2010-12-22 2010-12-22 Mining hydraulic excavator

Country Status (1)

Country Link
CN (1) CN102031797B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102278118B (en) * 2011-06-24 2013-09-18 北京市三一重机有限公司 Excavating device
CN102776908B (en) * 2012-08-21 2015-07-15 长安大学 Freestyle excavating machine
CN103103997A (en) * 2012-12-10 2013-05-15 辽宁鑫丰矿电设备制造有限公司 Hydraulic excavator in coal mine
CN103758517B (en) * 2014-01-21 2016-05-18 辽宁威跃集团机械制造有限公司 Mining lie on one's side voluntarily to dig fill machine of the clear end and using method thereof
CN105256850A (en) * 2015-11-02 2016-01-20 巢湖学院 Excavator bucket swing mechanism
CN106284450A (en) * 2016-09-06 2017-01-04 广西大学 A kind of timber loader of new structure

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201172833Y (en) * 2008-03-31 2008-12-31 张海堂 Mining dredger
NL2002125C2 (en) * 2008-07-14 2010-01-18 Hudson Bay Holding B V Mobile device.
CN101705698B (en) * 2009-11-21 2011-08-03 湖南山河智能机械股份有限公司 Rotary hydraulic excavator for mines
CN101793039B (en) * 2009-12-22 2012-02-29 太原重工股份有限公司 Rotary device of hydraulic excavator for mine
CN201901889U (en) * 2010-12-22 2011-07-20 辽宁鑫丰矿电设备制造有限公司 Mining hydraulic excavating machine

Also Published As

Publication number Publication date
CN102031797A (en) 2011-04-27

Similar Documents

Publication Publication Date Title
CN102031797B (en) Mining hydraulic excavator
CN201106451Y (en) Track-mounted liftable top-side construction drilling machine for anchor bar and anchor wire
CN201901889U (en) Mining hydraulic excavating machine
CN102704943A (en) Shield structure formed by shallow tunneling method in air-pressure mode
CN106089274A (en) A kind of multifunctional tunnel driving supporting machine
CN111997643A (en) Multi-hammer type tunnel boring machine, control method and application
CN101736763B (en) Foundation pit excavator
RU123389U1 (en) STEPPING MANIPULATOR FOR THE RECOGNITION OF SWAMPES
CN206111195U (en) Bulldozing car for tunnel construction
CN105114074A (en) Tunneling boring machine
CN103103997A (en) Hydraulic excavator in coal mine
CN102936905B (en) A kind of colliery crushing and loading roadway repairer
CN202913435U (en) Broken loading roadway repairing machine for coal mine
CN202925582U (en) Coal mine underground hydraulic excavator
CN102787621B (en) Continuous type groover
CN205975719U (en) Novel dredger
CN104373122A (en) Digging and anchoring device for coal collection by using star wheel
CN203668994U (en) Ditcher
CN105003276A (en) Special tunnel excavator
CN102061713B (en) Coal charging machine for blasting driving face of coal mine
CN201007007Y (en) Digger
CN201896617U (en) Coal charging machinery used on blasting driving face of coal mine
CN103953083A (en) Stepped earthwork construction excavator of underground passage
CN205277425U (en) Pipeline formula rock drill
JP5826601B2 (en) Pipe installation device

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
C56 Change in the name or address of the patentee

Owner name: LIAONING XINFENG MINE INDUSTRY (GROUP) CO., LTD.

Free format text: FORMER NAME: LIAONING XINFENG COAL MINE ELECTRICAL EQUIPMENT MANUFACTURING CO., LTD.

CP03 Change of name, title or address

Address after: 112700 Diaobingshan Development Zone, Tieling, Liaoning

Patentee after: Liaoning Xinfeng mining (Group) Co., Ltd.

Address before: 112700 Tieling city of Liaoning province Diaobingshan city Liaoning town longgou Xiaonan lock Xinfeng Mine Equipment Manufacturing Co Ltd

Patentee before: Liaoning Xinfeng Mine Electrical Equipment Manufacturing Co., Ltd.