CN104675420A - Working face frame for comprehensive mining - Google Patents
Working face frame for comprehensive mining Download PDFInfo
- Publication number
- CN104675420A CN104675420A CN201410781158.7A CN201410781158A CN104675420A CN 104675420 A CN104675420 A CN 104675420A CN 201410781158 A CN201410781158 A CN 201410781158A CN 104675420 A CN104675420 A CN 104675420A
- Authority
- CN
- China
- Prior art keywords
- chi
- fully
- mechanized mining
- mining working
- working support
- 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.)
- Pending
Links
- 238000005065 mining Methods 0.000 title claims abstract description 59
- 244000144985 peep Species 0.000 claims description 14
- 239000002699 waste material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 16
- 239000003245 coal Substances 0.000 description 8
- 238000005520 cutting process Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
- G01B5/061—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness height gauges
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention provides a working face frame for comprehensive mining. The working face frame comprises a front vertical cylinder composed of a vertical cylinder body and a movable rod which are in expansion fit. The front vertical cylinder is fixedly provided with a measuring ruler unit. The measuring ruler unit comprises an inner ruler and an outer ruler. The inner ruler is arranged in a slide groove, parallel to the axial direction, of the outer ruler. One of two ends in the sliding direction of the measuring ruler unit is fixedly mounted on the vertical cylinder body, and the other end is fixedly mounted on the movable rod. The measuring ruler unit and the front vertical cylinder synchronously expand, and height of a working face is determined by the aid of expansion quantity of the measuring ruler unit. In this way, time and labor waste caused by manual operation is avoided, and the height of the working face is rapidly and easily obtained.
Description
Technical field
The present invention relates to coal mining field of mechanical technique, more particularly, relate to a kind of fully-mechanized mining working support.
Background technology
Fully-mechnized mining technique is the main method of pit mining coal in the world at present, its equipment related generally to has coal-winning machine, flexible scratch board conveyor, from equipment such as moving hydraulic supports, mainly comprise coal cutting, fortune coal in recovery process, coaling, the exploitation operation such as supporting and management top board, above-mentioned operation realizes whole automation mechanized operation substantially, because the actual operating conditions of mine is severe, and be not suitable for working long hours, so automation mechanized operation is also the important development direction of this kind of mining machines.
In coal cutting process, no matter be top-coal caving face or large-mining-height working surface, it is all the difficult point that coal machine driver effectively can not control work plane mining height in coal cutting process that work plane mining height controls, because can only the height of control one section of mining height substantially by the observation of naked eyes, can not effectively control comprehensively.
On-the-spot technician is when measuring the height of mining height, and can only measure mining height face by ruler is sectional, obtain the immediate data of work plane mining height, working programme is loaded down with trivial details, and dangerous when roof condition is severe.
Therefore, how realizing measuring the simple fast of face height, is current those skilled in the art's problem demanding prompt solution.
Summary of the invention
In view of this, the invention provides a kind of fully-mechanized mining working support, for supporting fully-mechanized mining working, to realize measuring the simple fast of face height.
In order to achieve the above object, the invention provides following technical scheme:
A kind of fully-mechanized mining working support, comprise the front column be made up of column cylinder body and the motion bar of expansion fit, also comprise the dip stick be installed on front column, dip stick comprises interior chi and outer chi, be provided with along its axial arranged chute in outer chi, interior chi slides and is arranged in chute, and one end that dip stick skids off the two ends in direction is installed on column cylinder body, and the other end is installed on motion bar.
Preferably, in above-mentioned fully-mechanized mining working support, interior chi is marked with scale, and outer chi is provided with the pointer of indicating graduation.
Preferably, in above-mentioned fully-mechanized mining working support, outer chi is the lead of tubular structure, and interior chi is the guide peg be arranged in lead that slides.
Preferably, in above-mentioned fully-mechanized mining working support, pointer, for being positioned on outer chi, slips into interior chi the outer chi edge rib held and match.
Preferably, in above-mentioned fully-mechanized mining working support, outer chi there is hollow out peep hole to observe scale.
Preferably, in above-mentioned fully-mechanized mining working support, the top of interior chi and the bottom of outer chi are respectively arranged with and the fixing Ka Lan of the affixed first fixing Ka Lan and second on motion bar and column cylinder body.
Preferably, in above-mentioned fully-mechanized mining working support, the first fixing Ka Lan comprises the first U-shaped folder embraced and be located on motion bar, and the top of interior chi is provided with to press from both sides with the first U-shaped locks friction tight first junction plate.
Preferably, in above-mentioned fully-mechanized mining working support, the second fixing Ka Lan comprises the second U-shaped folder embraced and be located on column cylinder body, and the bottom of outer chi is provided with to press from both sides with the second U-shaped locks friction tight second junction plate.
Fully-mechanized mining working provided by the present invention comprises the front column be made up of column cylinder body and the motion bar of expansion fit, and the dip stick be installed on front column, dip stick comprises interior chi and outer chi, be provided with along its axial arranged chute in outer chi, interior chi slides and is arranged in chute, one end that dip stick skids off the two ends in direction is installed on column cylinder body, and the other end is installed on motion bar.Dip stick structure is the outer chi two parts of interior chi that can stretch to axial, on the column cylinder body that these two parts are individually fixed in front column and active column, front column itself is a large bracket hydraulic cylinder, so dip stick is with the flexible synchronization telescope of front column (bracket hydraulic cylinder), and the stroke of measurement (bracket hydraulic cylinder) is whereby to determine the height of the fully-mechanized mining working that fully-mechanized mining working support supports.Adopt this method be installed in by dip stick on front column can exempt all inconvenience of the manual synchronization measuring height when fully-mechanized mining working adjustment height, directly read measuring height, save artificial, also substantially increase measuring speed simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the front column of fully-mechanized mining working support of the present invention;
Fig. 2 is that the axle that the present invention fixes the folder of U-shaped in card hurdle measures intention;
In upper figure:
1 be motion bar, 2 be interior chi, 3 be edge rib, 4 be outer chi, 5 be column cylinder body, 61 to be the first fixing Ka Lan, 62 be the second fixing Ka Lan, 7 press from both sides, 81 be the first junction plate, 82 be the second junction plate for U-shaped.
Detailed description of the invention
The invention discloses a kind of fully-mechanized mining working support, achieve and the simple fast of fully-mechanized mining working height is measured.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, carry out clear, complete description to the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, Fig. 1 is the schematic diagram of the front column of fully-mechanized mining working support provided by the invention.
The invention provides a kind of fully-mechanized mining working support, comprise the front column be made up of the column cylinder body 5 of expansion fit and motion bar 1, also comprise the dip stick be installed on front column, dip stick comprises interior chi 2 and outer chi 4, be provided with in outer chi 4 along its axial arranged chute, interior chi 2 slides and is arranged in chute, and one end that dip stick skids off the two ends in direction is installed on column cylinder body 5, and the other end is installed on motion bar 1.
Dip stick in the present invention is two sections that can axially do relative motion, and wherein one section is outer chi 4, and outer chi 4 has the chute being parallel to self axis, and another section of being inserted in outer chi chute is interior chi 2; Outer chi 4 and interior chi 2 one of them and column cylinder body 5 are fixedly mounted with, another individuality is fixedly mounted with motion bar 1, what is called can play fixation after being fixedly mounted with and referring to installation, because have this structure, dip stick and front column synchronization telescope, and the interior chi 2 that dip stick stretches and outer chi 4 two parts have at least one to be that tool is graduated, read registration whereby, this dip stick actual measurement be the stroke of front column (bracket hydraulic cylinder), the high variable quantity of fully-mechanized mining working can be converted into, the height of fully-mechanized mining working can be determined thus.Wherein conversion process can complete before in-process measurement chi scale, namely the direct corresponding scale obtained that converted by raw footage is worked on dip stick, also after can measuring concrete elongation, row converts again, wherein, a kind of conversion mode is easier saves time, directly dip stick is processed into the scale that converted, just can direct reading.
It should be noted that, because chi in dip stick 2 and outer chi 4 two ends are individually fixed on two sections of front column, and with the front column synchronization telescope of support, this just require dip stick structurally with the range of scale on all to meet work time front column maximal tensility.Such as, if maximal tensility during support work needed for front column is 300mm, then graduated that section of chi length of dip stick must be greater than 300mm, and range itself is also greater than 300mm simultaneously.
It should be noted that in addition, according to the structure of fully-mechanized mining working, by many fully-mechanized mining working support common support fully-mechanized mining workings, also be many support associated movements during adjustment height, so, do not need all to install and measure chi on every root fully-mechanized mining working support, in the fully-mechanized mining working support of several associated movement, have one to be this fully-mechanized mining working support that dip stick is housed.
Adopt this method be installed on by dip stick on fully-mechanized mining working support can exempt in the prior art, all inconvenience of manual synchronization's measuring height during fully-mechanized mining working adjustment height, direct reading measuring height, simple and conveniently saves artificial, also substantially increases measuring speed simultaneously.
In order to optimize technique scheme further, state on the invention on the basis of fact Example, in above-mentioned fully-mechanized mining working support, interior chi 2 is marked with scale, and outer chi 4 is provided with the pointer of indicating graduation.
Interior chi 2 and outer chi 4 two sections of dip sticks, a segment mark has scale one section to have the structure of indicating graduation, by flexible i.e. readable between the two, measures required height number.The form of its pointer can have a variety of, as directly installed or be welded on the cuspidated structure of tool on outer chi 4 surface; Or chi 4 surface manufactures engraved structure that can indicate interior chi high scale etc. outside, is easy to obtain multiple pointer structure within the scope of prior art, does not illustrate one by one at this by inspiration those skilled in the art of technical solution of the present invention.
In order to optimize technique scheme further, state on the invention on the basis of fact Example, in above-mentioned fully-mechanized mining working support, outer chi 4 is the lead of tubular structure, and interior chi 2 is the guide peg be arranged in lead that slides.Dip stick structure is chi 2 in hollow outer chi 4 inner sleeve herein, and interior chi 2 can stretch out from outer chi 4 one end.The shape of preferred dip stick is drum.
Adopt this interior chi 2 to be inserted in the mode of outer chi 4 completely, maximum advantage is that structure is simple, produce and installation cost corresponding also lower; Simultaneously because interior chi 2 is inserted in outer chi 4 completely, this just requires the pointer on outer chi 4 or stretches out the edge of outer chi 4 or directly outside chi 4 carry out hollow out; Adopt chi 2 in this structure design relatively easily to wear and tear, the lubricating maintenance between interior chi 2 and outer chi 4 should be noted.
In order to optimize technique scheme further, state on the invention on the basis of fact Example, in above-mentioned fully-mechanized mining working support, pointer is for being positioned on outer chi 4, and interior chi 2 slips into the edge rib 3 of the outer chi 4 of end.In simple terms can directly using the pointer of the edge of outer chi 4 and the outer chi 4 of interior chi 2 cohesive end as indicating graduation, namely operationally, how long interior chi 2 stretches out from outer chi 4, and reading just has much.
The advantage of the program is that structure is simply easy to process, the advantage of tubular dip stick in above-described embodiment is expanded further, directly the edge rib 3 of outer chi 4 is not needed other extra process as pointer.But also there is certain shortcoming, after service time is longer, inside and outside dip stick, chi 4 joining place may pile up a lot of dust greasy dirt, the edge rib 3 of outer chi 4 owing to also having certain wearing and tearing under the working environment of many dust granules, corner angle become not obvious, at this moment the boundary at the edge of outer chi 4 will become fuzzyyer, and cause reading difficulty, reading accuracy also reduces greatly.
In order to optimize technique scheme further, stating on the invention on the basis of fact Example, in above-mentioned fully-mechanized mining working support, outer chi 4 having hollow out peep hole to observe scale.It should be noted that to only have the dip stick of outer chi 4 structure of tubular just to need to be provided with hollow out peep hole.Wherein the shape and structure of hollow out peep hole is decided by hollow out peep hole role in corresponding dip stick structure, when scale is on interior chi 2, hollow out peep hole on outer chi 4 can directly as pointer, to be requirement hollow out peep hole be for this with the shape at tip pointing to scale direction, and hollow out peep hole size at least guarantees to see the scale on interior chi 2 clearly, or separately there is pointer structure, hollow out peep hole only does observation use, only needs the pointer on outer chi 4 to be installed in the position range of hollow out peep hole; When on scale outside chi 4, pointer is then at interior chi 2, need by the hollow out peep hole on outer chi 4 see clearly interior chi 2 pointer instruction be what scale, this just requires that hollow out peep hole needs to have the length being parallel to chute direction and being no less than pointer operating distance, for the sake of simplicity, hollow out peep hole preferable shape is the strip fluting outside pointer structure.
Owing to splashing the working environment of the many dust of particle under mine, adding layer of transparent protective cover on hollow out surface can available protecting dip stick surface texture, slows down wearing and tearing more, makes observation scale more accurately easier.
As shown in Figure 2, Fig. 2 is that the axle that the present invention fixes the folder of U-shaped in card hurdle measures intention.
In order to optimize technique scheme further, state on the invention on the basis of fact Example, the top of interior chi 2 and the bottom of outer chi 4 are respectively arranged with and the affixed first fixing card hurdle 61 and the second fixing card hurdle 62 on motion bar 1 and column cylinder body 5.Wherein fix Ka Lan to be usually used in frame for movement to be fixed on the installation material of column, be characterized in easy to loading and unloading, structure is reliable.
In order to optimize technique scheme further, state on the invention on the basis of fact Example, the first fixing card hurdle 61 comprises the first U-shaped folder 7 embraced and be located on motion bar, and the top of interior chi 2 is provided with and presss from both sides 7 with the first U-shaped and lock friction tight first junction plate 81.
In order to optimize technique scheme further, state on the invention on the basis of fact Example, the second fixing card hurdle 62 comprises the second U-shaped folder 7 embraced and be located on column cylinder body 5, and the bottom of outer chi 4 is provided with and presss from both sides 7 with the second U-shaped and lock friction tight second junction plate 82.
Fixing Ka Lan is conventional syndeton, is usually used in cylindrical objects and another has the connection of installing hole object.The U-shaped folder 7 of fixing Ka Lan is enclosed within stationary housing 5 or motion bar 1 herein, by the bolt of fixing Ka Lan or pin or other similar rod-like structure with locking function through the hole on one of them junction plate of inside and outside chi 4, then by the installing hole 9 of this bolt through end, U-shaped folder 7 two ends, be held on front column by screw threads for fastening by U-shaped folder 7 afterwards, dip stick completes and is fixedly installed on front column.
The advantage of this technical scheme is adopted to be that installing/dismounting is all very convenient, consider the operating mode of support in underground work of fully-mechanized mining working, the scalable scope of dip stick only meets the stroke of support under this working condition, and when exploiting complete needs mobile carrying fully-mechanized mining working support, will by less could more easily carrying of fully-mechanized mining working support volume receipts, so the flexible ability of dip stick may not meet the support stroke under carrying operating mode, in other words, front column can be retracted more length by fully-mechanized mining working support front column in inoperative situation, so be packed in the dip stick easy disassembly on front column be only optimal selection.
In this manual, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a fully-mechanized mining working support, comprise the front column be made up of the column cylinder body (5) of expansion fit and motion bar (1), it is characterized in that, also comprise the dip stick be installed on front column, described dip stick comprises interior chi (2) and outer chi (4), be provided with in described outer chi (4) along its axial arranged chute, the slip of described interior chi (2) is arranged in described chute, one end that described dip stick skids off the two ends in direction is installed on described column cylinder body (5), and the other end is installed on described motion bar (1).
2. fully-mechanized mining working support according to claim 1, is characterized in that, described interior chi (2) is marked with scale, and described outer chi (4) is provided with the pointer of indicating graduation.
3. fully-mechanized mining working support according to claim 2, is characterized in that, the lead that described outer chi (4) is tubular structure, and described interior chi (2) is the guide peg be arranged in described lead that slides.
4. fully-mechanized mining working support according to claim 3, is characterized in that, described pointer, for being positioned on described outer chi (4), slips into outer chi edge rib (3) of holding and matching with described interior chi.
5. fully-mechanized mining working support according to claim 1, is characterized in that, described outer chi (4) has hollow out peep hole to observe scale.
6. fully-mechanized mining working support according to claim 1, it is characterized in that, the top of described interior chi (2) and the bottom of outer chi (4) are respectively arranged with and described motion bar (1) and described column cylinder body (5) the fixing Ka Lan (62) of the first fixing Ka Lan (61) and second that above (1) is affixed.
7. fully-mechanized mining working support according to claim 6, it is characterized in that, described first fixing Ka Lan (61) comprises the first U-shaped folder (7) embraced and be located on described motion bar (1), and the top of described interior chi (2) is provided with and presss from both sides (7) with described first U-shaped and lock friction tight first junction plate (81).
8. fully-mechanized mining working support according to claim 6, it is characterized in that, described second fixing Ka Lan (62) comprises the second U-shaped folder (7) embraced and be located on described column cylinder body (5), and the bottom of described outer chi (4) is provided with and presss from both sides (7) with described second U-shaped and lock friction tight second junction plate (82).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410781158.7A CN104675420A (en) | 2014-12-16 | 2014-12-16 | Working face frame for comprehensive mining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410781158.7A CN104675420A (en) | 2014-12-16 | 2014-12-16 | Working face frame for comprehensive mining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104675420A true CN104675420A (en) | 2015-06-03 |
Family
ID=53310948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410781158.7A Pending CN104675420A (en) | 2014-12-16 | 2014-12-16 | Working face frame for comprehensive mining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104675420A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461211A (en) * | 2017-09-28 | 2017-12-12 | 淮南矿业(集团)有限责任公司 | The anti-down early-warning apparatus of hydraulic support |
| CN109973127A (en) * | 2019-04-08 | 2019-07-05 | 绍兴文理学院 | A kind of constant resistance and large deformation support unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3626947A1 (en) * | 1986-08-08 | 1988-02-11 | Gewerk Eisenhuette Westfalia | Hydraulic supply arrangement for underground winning operations |
| CN88102149A (en) * | 1987-03-20 | 1988-10-05 | 波尔玛克矿山机械化协会菲泽斯矿山机械动力工厂 | Lemniscate mining supports |
| CN2212078Y (en) * | 1994-11-01 | 1995-11-08 | 西北煤机二厂 | Lowing device for hydraulic rack |
| CN202032985U (en) * | 2011-05-08 | 2011-11-09 | 山西兰花科技创业股份有限公司 | Mining height monitoring device for underground full-mechanized mining faces |
| CN203672272U (en) * | 2013-12-17 | 2014-06-25 | 中国神华能源股份有限公司 | Measuring device used for measuring backstopping height of fully mechanized work surface |
-
2014
- 2014-12-16 CN CN201410781158.7A patent/CN104675420A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3626947A1 (en) * | 1986-08-08 | 1988-02-11 | Gewerk Eisenhuette Westfalia | Hydraulic supply arrangement for underground winning operations |
| CN88102149A (en) * | 1987-03-20 | 1988-10-05 | 波尔玛克矿山机械化协会菲泽斯矿山机械动力工厂 | Lemniscate mining supports |
| CN2212078Y (en) * | 1994-11-01 | 1995-11-08 | 西北煤机二厂 | Lowing device for hydraulic rack |
| CN202032985U (en) * | 2011-05-08 | 2011-11-09 | 山西兰花科技创业股份有限公司 | Mining height monitoring device for underground full-mechanized mining faces |
| CN203672272U (en) * | 2013-12-17 | 2014-06-25 | 中国神华能源股份有限公司 | Measuring device used for measuring backstopping height of fully mechanized work surface |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461211A (en) * | 2017-09-28 | 2017-12-12 | 淮南矿业(集团)有限责任公司 | The anti-down early-warning apparatus of hydraulic support |
| CN109973127A (en) * | 2019-04-08 | 2019-07-05 | 绍兴文理学院 | A kind of constant resistance and large deformation support unit |
| CN109973127B (en) * | 2019-04-08 | 2021-06-15 | 绍兴文理学院 | Constant-resistance large-deformation single support |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102661162B (en) | Coalface straightness control method | |
| CN103883331B (en) | TBM experimental bench cutterhead flexible constraint and attitude measuring | |
| CN104675420A (en) | Working face frame for comprehensive mining | |
| CN203856476U (en) | Flexible restraining and posture measuring device for tool pan of TBM (Tunnel Boring Machine) experiment table | |
| CN105569097A (en) | Test device and method for drawing bucket foundation model at any angles | |
| CN103912296B (en) | A kind of mining face equipment alignment system based on image measurement | |
| CN104925460A (en) | Scraper conveyor middle trough rotation angle detecting device | |
| CN202510143U (en) | Onboard timbering machine for heading machine | |
| CN105473818B (en) | A kind of installing mechanism of cut loading machine for girdle | |
| CN203271739U (en) | Support for electric coal drill | |
| CN207423049U (en) | A kind of measuring device for monitoring coal mine tunnel top board displacement | |
| CN207866408U (en) | A kind of mine roof timbering pressure-detecting device | |
| CN103397886A (en) | Excavation roadway supporting working platform | |
| CN203682400U (en) | Belt conveyor landing leg | |
| CN102175110B (en) | Method for detecting mortar joints of coke oven | |
| CN109269604A (en) | A kind of connecting rod Weight detecting device | |
| CN210773733U (en) | Dipperstick for engineering cost | |
| CN203900998U (en) | Protection cover with automatic sliding door | |
| CN204783047U (en) | Multi -functional tunnel platform truck | |
| CN208473916U (en) | The hydraulic support for having pedestal and the measurement of connecting rod relative angle | |
| CN220541945U (en) | Elevator gap inspection device | |
| CN206860220U (en) | Mine equipment hand crossbeam associated hydraulic cylinder push unit | |
| CN107605517B (en) | Multipoint movable formula tunnel tunnel face temporary support system | |
| CN218120830U (en) | Thrust block detection tool for hydraulic device of petroleum machinery | |
| CN204571939U (en) | A kind of colliery mineral reserve measure detection rig |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150603 |