CN113605889A - A undercutting device for underworkings - Google Patents
A undercutting device for underworkings Download PDFInfo
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- CN113605889A CN113605889A CN202110736594.2A CN202110736594A CN113605889A CN 113605889 A CN113605889 A CN 113605889A CN 202110736594 A CN202110736594 A CN 202110736594A CN 113605889 A CN113605889 A CN 113605889A
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- Prior art keywords
- cutting
- assembly
- platform assembly
- support frame
- slitting device
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- 238000005520 cutting process Methods 0.000 claims abstract description 62
- 230000001681 protective effect Effects 0.000 claims description 9
- 239000006096 absorbing agent Substances 0.000 claims description 7
- 230000035939 shock Effects 0.000 claims description 6
- 239000003245 coal Substances 0.000 abstract description 21
- 239000011435 rock Substances 0.000 abstract description 16
- 239000002893 slag Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 11
- 238000005065 mining Methods 0.000 description 10
- 238000010276 construction Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 231100000331 toxic Toxicity 0.000 description 4
- 230000002588 toxic effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/16—Machines slitting solely by one or more rotating saws, cutting discs, or wheels
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/16—Machines slitting solely by one or more rotating saws, cutting discs, or wheels
- E21C25/18—Saws; Discs; Wheels
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C29/00—Propulsion of machines for slitting or completely freeing the mineral from the seam
- E21C29/22—Propulsion of machines for slitting or completely freeing the mineral from the seam by wheels, endless tracks or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
- E21C31/08—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for adjusting parts of the machines
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C45/00—Methods of hydraulic mining; Hydraulic monitors
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C45/00—Methods of hydraulic mining; Hydraulic monitors
- E21C45/08—Automatic or remote control of hydraulic monitors
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention provides a cutting device for an underground roadway. The undermining device for the underground roadway comprises a platform assembly; a support frame, a first end of the support frame being rotatably mounted to the platform assembly; a cutting assembly mounted to the second end of the support frame, the cutting assembly including at least two saw blades. According to the undermine tunnel undermining device provided by the embodiment of the invention, undermining work can be completed through at least two saw blades, and undermining of coal and rock masses at different angles and different positions can be realized by rotatably mounting the first end of the support frame on the platform assembly. In addition, through this a cut device for underworkings, can replace artifical pneumatic pick to carry out the work of undercutting, can effectively block to smash the personnel of hindering after the disintegrating slag that broken rock process produced falls. The efficiency and the security of underworkings undercutting have been improved.
Description
Technical Field
The invention relates to the field of coal mining equipment, in particular to a cutting device for an underground roadway.
Background
The coal mine mechanization is a necessary way for realizing the safety, high efficiency, innovation and development of the coal mine, and particularly has very remarkable advantages for mines with simple geological conditions, good coal bed occurrence conditions and higher coal mine mechanization degree level. Considering that permanent sealing walls need to be arranged for sealing in the gateway connecting roadway and the final mining connecting roadway of the fully mechanized mining face at present. The relevant specifications state that: the gob must be closed in time. The communicating roadways leading to the goaf must be closed one by one with the advance of the coal face. And (4) within 45 days after the mining of the mining area is finished, setting a sealing wall in all the roadways communicated with the mining area, and sealing all the mining areas. Therefore, the underground coal mine has a plurality of places needing to be constructed and sealed, and the construction and sealing are required to be timely.
At present, the closed grooves constructed in various mines are mostly cut by adopting an air pick mode, so that the construction efficiency is low, more workers are used, and the labor cost is high. Especially when the fully mechanized mining face crossheading and goaf are communicated in a closed roadway for manual cut, the pushing speed of the fully mechanized mining face cannot be followed due to low working efficiency, the timeliness of the cut cannot be guaranteed, a large amount of cut personnel needs to be invested in order not to influence the pushing speed of the fully mechanized mining face, and therefore the number of constructors for closed teams is large, and the working efficiency is low.
Secondly, there are a lot of potential safety hazards in the aspect of construction safety in the manual cut, the concrete points are as follows:
1. the manual undercutting, because the pneumatic pick is handheld operation by personnel, so broken rock point is less than 1m apart from operating personnel, and operating personnel limits its ability of dodging the disintegrating slag that drops fast under the condition of handheld pneumatic pick, therefore the disintegrating slag drops and injures personnel's possibility greatly.
2. When a person holds the air pick by hand or lifts the air pick, the weight of the G20 type air pick reaches 20kg, and the air pick continuously carries out impact vibration, so that the air pick is easy to slide down and smash operators or operators below the operators.
3. Artifical undermining, because the tunnel height is 2.6 ~ 4m usually, the middle part and the top of overhead groove need set up the scaffold frame usually and ascend a height the operation, the operation of ascending a height has increased the danger of operation, especially the personnel need stand on interim work platform when undermining the overhead groove, personnel need face upward the neck and carry out work, time is one long, operating personnel keeps a posture for a long time, very easily cause the harm to operating personnel's healthy, and personnel are tired easily, cause the eminence landing accident, there is great potential safety hazard.
4. The manual cut is adopted, and the possibility of suffocation of personnel due to low oxygen or toxic and harmful gas overflow in the goaf is increased because the personnel are close to the goaf.
5. Due to the low operation efficiency of the manual cutting mode, 5-6 people are usually arranged to operate the pneumatic pick simultaneously to construct the same groove body, and the difficulty of mutual protection and joint protection of staff is increased by the parallel operation of multiple people in the same place.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the undermine tunnel undercutting device which is low in labor intensity, convenient to operate, high in safety and convenient to operate.
The embodiment of the invention provides a cutting device for an underground roadway, which comprises:
a platform assembly;
a support frame, a first end of the support frame being rotatably mounted to the platform assembly;
a cutting assembly mounted to the second end of the support frame, the cutting assembly including at least two saw blades.
According to the undermine tunnel undermining device provided by the embodiment of the invention, undermining work can be completed through at least two saw blades, and undermining of coal and rock masses at different angles and different positions can be realized by rotatably mounting the first end of the support frame on the platform assembly. In addition, through this a cut device for underworkings, can replace artifical pneumatic pick to carry out the work of undercutting, can effectively block to smash the personnel of hindering after the disintegrating slag that broken rock process produced falls. The efficiency and the security of underworkings undercutting have been improved.
According to one embodiment of the invention, the cutting assembly further comprises a cutting head mounted to the second end of the support frame.
According to one embodiment of the invention, the cutting assembly further comprises a guard mounted to the cutting head, at least two of the saw blades being rotatably mounted in the guard, respectively.
According to one embodiment of the invention, the cutting assembly further comprises a telescopic frame, the telescopic frame is mounted on the cutting head, and the protective covers are respectively mounted at two ends of the telescopic frame.
According to one embodiment of the invention, the device further comprises a jet emitter, and the jet emitter is arranged between two adjacent protective covers.
According to one embodiment of the invention, the support frame comprises:
at least two connecting rods, wherein one ends of the at least two connecting rods are hinged with each other, one end of one connecting rod is rotatably arranged on the platform component, and one end of the other connecting rod is provided with the cutting component;
a support cylinder disposed between the platform assembly and the link, and/or,
the supporting oil cylinder is arranged between two adjacent connecting rods.
According to one embodiment of the invention, the platform assembly is provided with a turntable, wherein one end of one of the links is mounted to the turntable.
According to one embodiment of the invention, at least one of said links is a telescopic link.
According to one embodiment of the invention, a shock absorber is arranged between one end of the other of said links and said cutting assembly.
According to one embodiment of the invention, the platform assembly is provided with road wheels.
One or more technical solutions in the present invention have at least one of the following technical effects:
according to the undermine tunnel undermining device provided by the embodiment of the invention, the coal and rock mass is cut mechanically instead of a manual air pick, so that the undermine tunnel undermining efficiency can be improved. Moreover, the protective cover can effectively prevent broken slag generated in the rock breaking process from damaging people; the impact vibration generated in the cutting process can be effectively reduced through the real vibration absorber, and the stability and the reliability of the telescopic arm can be kept; the connecting rod is arranged in a telescopic mode, so that coal wall cutting at different height positions can be completed; the airborne comprehensive gas tester can detect the gas concentration in the early warning construction area, and prevent the toxic and harmful gas from damaging human bodies; can adjust according to coal wall intensity through setting up jet emitter, improve the undercutting efficiency.
Drawings
Fig. 1 is a schematic front view of a slitting device for a downhole roadway provided by an embodiment of the present invention;
fig. 2 is a schematic top view of a slitting device for a downhole roadway provided by an embodiment of the present invention;
fig. 3 is a schematic side view of a slitting device for a downhole roadway provided by an embodiment of the invention.
Reference numerals:
100. a platform assembly; 102. a support frame; 104. a cutting assembly; 106. a saw blade; 108. a cutting head; 110. a protective cover; 112. a telescopic frame; 114. a jet emitter; 116. a connecting rod; 118. a support cylinder; 120. a turntable; 122. a shock absorber; 124. and (5) traveling wheels.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
As shown in fig. 1 to 3, the present invention provides a slitting device for a downhole roadway, comprising:
a platform assembly 100;
a support bracket 102, a first end of the support bracket 102 being rotatably mounted to the platform assembly 100;
a cutting assembly 104, the cutting assembly 104 being mounted to the second end of the support frame 102, the cutting assembly 104 including at least two saw blades 106.
According to the undermine tunnel undermine grooving device provided by the embodiment of the invention, the grooving work can be completed through the at least two saw blades 106, and the first ends of the support frames 102 are rotatably arranged on the platform assembly 100, so that the coal rock bodies at different angles and different positions can be grooved. In addition, through this a cut device for underworkings, can replace artifical pneumatic pick to carry out the work of undercutting, can effectively block to smash the personnel of hindering after the disintegrating slag that broken rock process produced falls. The efficiency and the security of underworkings undercutting have been improved.
Specifically, with continued reference to fig. 1 to 3, the plunge cutting device for a downhole roadway according to the embodiment of the present invention mainly includes a platform assembly 100, a supporting frame 102 and a cutting assembly 104.
The platform assembly 100 is used for moving in the tunnel, and therefore, in order to improve the moving convenience of the platform assembly 100, the travelling wheels 124 are further arranged at the bottom of the platform assembly 100. The road wheels 124 may be trackless rubber wheels, which reduce vibration during movement of the platform assembly 100 to some extent. For example, the number of road wheels 124 may be 6, with 6 road wheels 124 being provided on each side of the platform assembly 100.
A support frame 102 is connected to the platform assembly 100, wherein a first end of the support frame 102 is rotatably connected to the platform assembly 100. Thus, when the coal and rock mass at different positions and different angle positions needs to be subjected to undercutting, the aim can be achieved by adjusting the angle of the support frame 102.
At a second end of the support bracket 102 is mounted a cutting assembly 104, the cutting assembly 104 including at least two saw blades 106. Taking the two saw blades 106 as an example, when the two saw blades 106 rotate, the cutting operation can be performed on the coal rock mass. Therefore, the manual pneumatic pick can be replaced to carry out the cutting operation, and the broken slag generated in the rock breaking process can be effectively prevented from falling off and injuring people. The efficiency and the security of underworkings undercutting have been improved.
According to one embodiment of the invention, the cutting assembly 104 further includes a cutting head 108, the cutting head 108 being mounted to the second end of the support frame 102.
Referring to fig. 1, a cutting head 108 is mounted to a second end of the support bracket 102 and a saw blade 106 is mounted to the cutting head 108. Through installation cutting head 108, can adjust according to coal wall intensity, improve the undercutting efficiency.
According to one embodiment of the present invention, the cutting assembly 104 further includes a guard 110, the guard 110 being mounted to the cutting head 108, and the at least two saw blades 106 being rotatably mounted within the guard 110, respectively.
Referring to fig. 2, a shield 110 is disposed on the cutting head 108, and two saw blades 106 are respectively disposed in the shield 110, and accordingly, the number of the shields 110 corresponds to the number of the saw blades 106. Through setting up protection casing 110, can effectively block the disintegrating slag that broken rock process produced, prevent to drop and injure personnel by a crashing object.
According to one embodiment of the present invention, the cutting assembly 104 further includes a telescopic frame 112, the telescopic frame 112 is mounted to the cutting head 108, and the guards 110 are respectively mounted to both ends of the telescopic frame 112.
Referring to fig. 2, the telescopic frame 112 may be implemented by using a telescopic bracket in the prior art, and a specific structure of the telescopic frame 112 is not further described in the embodiment of the present invention. Through set up expansion bracket 112 between two protection casings 110, can realize the adjustment to the interval between two protection casings 110 through the adjustment to expansion bracket 112, and then can adjust the interval between the saw bit 106, realize the user demand of the plunge cut of different width.
According to an embodiment of the present invention, a jet emitter 114 is further included, and the jet emitter 114 is installed between two adjacent shields 110.
Referring to fig. 2 and 3, by arranging the jet emitter 114 between two adjacent protective covers 110, high-pressure water flow can be sprayed out through the jet emitter 114, the integrity of the coal rock mass can be broken, the cutting efficiency is enhanced, and the control of the jet emitter 114 is realized by hydraulic centralized control and signal transmission cables which are transmitted into an integrated control panel.
According to one embodiment of the present invention, the support frame 102 includes at least two links 116, and one end of at least two links 116 is hinged to each other, wherein one end of one link 116 is rotatably mounted to the platform assembly 100 and one end of the other link 116 is mounted to the cutting assembly 104.
Taking the example of two links 116, one end of each of the two links 116 is hinged to the other, one end of one of the links 116 is rotatably mounted to the platform assembly 100, and one end of the other link 116 is mounted to the cutting assembly 104. Of course, there may be three links 116, and the links 116 at each end are used for rotatably mounting to the platform assembly 100 and for mounting to the cutting assembly 104, respectively.
According to one embodiment of the present invention, at least one of the links 116 is a telescoping link 116.
Through setting at least one of them connecting rod 116 to telescopic connecting rod 116, can realize the cutting to the coal wall of co-altitude not, and then promoted this plunge cut device's application scope.
In the present embodiment, all of the links 116 are telescopic links 116.
According to one embodiment of the present invention, a shock absorber 122 is disposed between one end of the other link 116 and the cutting assembly 104.
The shock absorber is arranged between the connecting rod 116 and the cutting assembly 104, so that impact shock generated in the cutting process can be effectively reduced, and the stability and reliability of the telescopic arm can be kept.
The support frame 102 further comprises support cylinders 118, the support cylinders 118 being adapted to effect movement of the links 116, whereby the support cylinders 118 may be disposed between the platform assembly 100 and the links 116 connected to the platform assembly 100; alternatively, the support cylinder 118 may be disposed between two adjacent connecting rods 116; alternatively, the support cylinder 118 may be disposed between the platform assembly 100 and the connecting rod 116 and between two adjacent connecting rods 116.
As previously mentioned, to enable the rotatable connection of the support frame 102 to the platform assembly 100, a turntable 120 is provided on the platform assembly 100, wherein one end of one of the links 116 is mounted to the turntable 120.
In order to position the rotation angle of the turntable 120, a positioning structure may be further disposed on the platform assembly 100 to lock the relative angle between the turntable 120 and the platform assembly 100. Furthermore, the turntable 120 may be electrically controlled, hydraulically controlled, or manually controlled.
In the embodiment of the invention, the platform assembly 100 is also provided with a gas tester, and the airborne gas tester can detect and early warn the gas concentration in the construction area, so that the toxic and harmful gases are prevented from damaging human bodies.
In summary, the undermining device for an underground roadway provided by the embodiment of the invention has at least the following technical effects:
according to the undermine tunnel undermining device provided by the embodiment of the invention, the coal and rock mass is cut mechanically instead of a manual air pick, so that the undermine tunnel undermining efficiency can be improved. Moreover, the protection cover 110 can effectively prevent broken slag generated in the rock breaking process from damaging people; the impact vibration generated in the cutting process can be effectively reduced through the real vibration absorber, and the stability and the reliability of the telescopic arm can be kept; by arranging the connecting rod 116 into a telescopic form, coal wall cutting at different height positions can be completed; the airborne comprehensive gas tester can detect the gas concentration in the early warning construction area, and prevent the toxic and harmful gas from damaging human bodies; can adjust according to coal wall intensity through setting up efflux transmitter 114, improve the undercutting efficiency.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A undercutting device for underworkings, comprising:
a platform assembly (100);
a support bracket (102), a first end of the support bracket (102) being rotatably mounted to the platform assembly (100);
a cutting assembly (104), the cutting assembly (104) being mounted to a second end of the support frame (102), the cutting assembly (104) including at least two saw blades (106).
2. A slitting device for a downhole tunnel according to claim 1, wherein the cutting assembly (104) further comprises a cutting head (108), the cutting head (108) being mounted to a second end of the support frame (102).
3. A slitting device for a downhole tunnel according to claim 2, wherein the cutting assembly (104) further comprises a protective cover (110), the protective cover (110) being mounted to the cutting head (108), at least two of the saw blades (106) being rotatably mounted in the protective cover (110), respectively.
4. A slitting device for a downhole tunnel according to claim 3, wherein the cutting assembly (104) further comprises a telescopic frame (112), the telescopic frame (112) being mounted to the cutting head (108), and the protection hoods (110) being mounted to both ends of the telescopic frame (112), respectively.
5. A slitting device for a downhole tunnel according to claim 3, further comprising a jet emitter (114), the jet emitter (114) being mounted between two adjacent protective hoods (110).
6. A slitting device for a downhole roadway according to any one of claims 1 to 5, wherein the support frame (102) comprises:
at least two connecting rods (116), wherein one ends of the at least two connecting rods (116) are hinged with each other, one end of one connecting rod (116) is rotatably arranged on the platform component (100), and one end of the other connecting rod (116) is arranged on the cutting component (104);
a support cylinder (118), the support cylinder (118) disposed between the platform assembly (100) and the linkage (116), and/or,
the supporting oil cylinder (118) is arranged between two adjacent connecting rods (116).
7. A slitting device for a downhole tunnel according to claim 6, wherein the platform assembly (100) is provided with a turntable (120), wherein one end of one of the tie rods (116) is mounted to the turntable (120).
8. A slitting device for a downhole tunnel according to claim 6, wherein at least one of the tie rods (116) is a telescopic tie rod (116).
9. A slitting device for a downhole tunnel according to claim 6, wherein a shock absorber (122) is arranged between one end of the other connecting rod (116) and the cutting assembly (104).
10. A slitting device for a downhole tunnel according to any one of claims 1 to 4, wherein travelling wheels (124) are provided on the platform assembly (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110736594.2A CN113605889A (en) | 2021-06-30 | 2021-06-30 | A undercutting device for underworkings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110736594.2A CN113605889A (en) | 2021-06-30 | 2021-06-30 | A undercutting device for underworkings |
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| Publication Number | Publication Date |
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| CN113605889A true CN113605889A (en) | 2021-11-05 |
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| CN202110736594.2A Pending CN113605889A (en) | 2021-06-30 | 2021-06-30 | A undercutting device for underworkings |
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| CN (1) | CN113605889A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115355000A (en) * | 2022-10-19 | 2022-11-18 | 中国标准化研究院 | Cut equipment for mining |
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2021
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| CN206830172U (en) * | 2017-06-22 | 2018-01-02 | 山东科技大学 | A kind of coal petrography cutting part of heading machine and coal petrography development machine |
| CN207905797U (en) * | 2018-01-02 | 2018-09-25 | 中国神华能源股份有限公司 | A kind of mining channeling machine of hydraulic pressure |
| CN108214945A (en) * | 2018-01-10 | 2018-06-29 | 中铁隧道局集团有限公司 | Mobile facade hard rock slot-cutting machine and its construction technology |
| CN109899063A (en) * | 2019-03-27 | 2019-06-18 | 徐州和润起重设备技术有限公司 | A kind of Efficient safe fluting manipulator and grooving processes |
| CN211258595U (en) * | 2019-09-30 | 2020-08-14 | 山东科技大学 | Portable hydraulic automatic sawing and slitting machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115355000A (en) * | 2022-10-19 | 2022-11-18 | 中国标准化研究院 | Cut equipment for mining |
| CN115355000B (en) * | 2022-10-19 | 2022-12-27 | 中国标准化研究院 | Cut equipment for mining |
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