CN103090841B - Cutting head toothholder strain detection testing device and method thereof under Vertical Axis Road-header cut operating mode - Google Patents

Cutting head toothholder strain detection testing device and method thereof under Vertical Axis Road-header cut operating mode Download PDF

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Publication number
CN103090841B
CN103090841B CN201210423715.9A CN201210423715A CN103090841B CN 103090841 B CN103090841 B CN 103090841B CN 201210423715 A CN201210423715 A CN 201210423715A CN 103090841 B CN103090841 B CN 103090841B
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CN
China
Prior art keywords
toothholder
foil gauge
cutting head
data acquisition
operating mode
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CN201210423715.9A
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Chinese (zh)
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CN103090841A (en
Inventor
张建广
张梦奇
侯林
梁万吉
田原
李海峰
阎志伟
于向东
马健康
张国栋
Original Assignee
中国煤炭科工集团太原研究院
山西天地煤机装备有限公司
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Priority to CN201210423715.9A priority Critical patent/CN103090841B/en
Publication of CN103090841A publication Critical patent/CN103090841A/en
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Publication of CN103090841B publication Critical patent/CN103090841B/en

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Abstract

The technical field of testing under the invention belongs to cutting head of roadheader cut operating mode, a kind of specifically cutting head toothholder strain detection testing device and method thereof under Vertical Axis Road-header cut operating mode, solve existing for the research in the actual loading of cutting head toothholder under cut operating mode because operating mode is severe, relate to very few, thus the development of cutting head of roadheader technology is caused to the problem to a certain degree affected.It comprises foil gauge, and foil gauge connects data acquisition emitter, and data acquisition emitter is mounted on inside cut head body.Method step is as follows: install two foil gauges, be connected to by foil gauge connecting line on data acquisition emitter, be in place by the pick pulled down, debug and start cutting test, and test figure can store within it by data acquisition emitter.Beneficial effect of the present invention: the data acquisition achieving toothholder strain in cutting head cutting course, for cutting head design courses provides real data.

Description

Cutting head toothholder strain detection testing device and method thereof under Vertical Axis Road-header cut operating mode
Technical field
The technical field of testing under the invention belongs to cutting head of roadheader cut operating mode, is specifically related to cutting head toothholder strain detection testing device and method thereof under a kind of Vertical Axis Road-header cut operating mode, is applicable to the test of longitudinal axis cutting head of roadheader toothholder mechanical state.
Background technology
Vertical Axis Road-header obtains fast development in the use of colliery and non-coal mine in recent years, usable range and environment variation, therefore also more and more high to the requirement of cutting head.The existing theoretical and experimental study about cutting head, comprises by hilted broadsword test, cutting test, but for the research in the actual loading of cutting head toothholder under cut operating mode because operating mode is severe, relates to less so far, remain a technological gap in industry.Its main cause is: in cutting head cutting course, rock is extruded along toothholder gap, easily by strain transducer and line damage thereof, and in cutting course, need water spray, common strain transducer cannot use, add the rotation of cutting head, the connection of strain transducer and data collecting instrument is also very difficult.Make the test never progress to toothholder strain under cutting head cut operating mode for these reasons, thus impact is to a certain degree caused on the checking of cutting head of roadheader design theory and improvement.
Summary of the invention
Goal of the invention of the present invention: in prior art for the research in the actual loading of cutting head toothholder under cut operating mode because operating mode is severe, relate to very few, thus impact is to a certain degree caused on the development of cutting head of roadheader technology, the invention provides cutting head toothholder strain detection testing device and method thereof under a kind of Vertical Axis Road-header cut operating mode for this reason.
The present invention adopts following technical scheme to realize:
Cutting head toothholder strain detection testing device under Vertical Axis Road-header cut operating mode, it is characterized in that comprising foil gauge cutting head being positioned at the toothholder of same helix is installed, each toothholder installs two foil gauges according to vertical and parallel toothholder bottom direction, foil gauge connects data acquisition emitter by foil gauge connecting line, data acquisition emitter is mounted on inside cut head body, foil gauge connecting line is coated with iron sheet through the position of cut head body, and iron sheet is welded on cut head body.
Cutting head toothholder strain testing method under a kind of Vertical Axis Road-header cut operating mode, is characterized in that step is as follows:
1), select the toothholder that cutting head is positioned on same helix, remove pick, foil gauge uses spot welder both sides to be alternately welded on the root of toothholder equably, and each toothholder installs two foil gauges according to vertical and parallel toothholder bottom direction,
2), make foil gauge connecting line in order, use the iron sheet that thickness is 1mm to cover on foil gauge connecting line along foil gauge connecting line trend, use spot welder to be welded in by iron sheet on cut head body,
3), by foil gauge connecting line be connected on data acquisition emitter, and data acquisition emitter be fixed on inside cut head body,
4), repeat above-mentioned steps, the foil gauge on other toothholders be installed, and be connected on data acquisition emitter by foil gauge connecting line, and properly protect with iron sheet simultaneously,
5), by the pick pulled down be in place, debug and start cutting test, test figure can store within it by data acquisition emitter, complete reading to be tested, or in process of the test, be transmitted to receiving device real-time analysis.
The present invention collects two strain datas of the vertical direction of each toothholder, and analytical calculation obtains principle stress and the direction of toothholder, can be used for instructing the adjustment 3 d space coordinate of toothholder and angle.
The invention solves following key issue: 1, make strain transducer normally work under rock extrudes and there is the bad working environments of dedusting spraying,
2, strain transducer connecting line is made not overstock damage by rock,
3, strain signal normal acquisition and transmission in cutting head rotation process is made.
The present invention has following beneficial effect: the data acquisition achieving toothholder strain in cutting head cutting course, for cutting head design courses provides real data, also furthers investigate further for it and provides condition.The invention solves common foil gauge in cutting course water funk, data line is easily by the rock block impact failure of cut, and cutting head autobiography cannot the problem of connection data Acquisition Instrument, can be applied in similar severe test environment.
Accompanying drawing explanation
Fig. 1 is the structural representation of device of the present invention,
Fig. 2 is the partial enlarged drawing of Fig. 1.
Embodiment
Cutting head toothholder strain detection testing device under Vertical Axis Road-header cut operating mode, it is characterized in that comprising cutting head is positioned at same helix toothholder 3 on install foil gauge 4, each toothholder 3 installs two foil gauges 4 according to vertical and parallel toothholder 3 bottom direction, foil gauge 4 connects data acquisition emitter 7 by foil gauge connecting line 5, data acquisition emitter 7 is mounted on inside cut head body 1, foil gauge connecting line 5 is coated with iron sheet 6 through the position of cut head body 1, and iron sheet 6 is welded on cut head body 1.
Cutting head toothholder strain testing method under a kind of Vertical Axis Road-header cut operating mode, is characterized in that step is as follows:
1), before determining that foil gauge 4 installed by the toothholder 3 tested to first pull down pick 2, use means of spot welds to be arranged on toothholder by technological requirement by waterproof foil gauge.Toothholder on current Vertical Axis Road-header cutting head is generally arranged according to helix pattern, is determined the number of helix, be generally 3-4 bar by existing design theory and experience.Toothholder number on every bar helix and the toothholder space angle of corresponding sequence number also substantially identical with structure, corresponding stressed also identical, as long as therefore all toothholders tested on a helix are just equivalent to the forces testing completing whole cutting head toothholder.The spot welder both sides that waterproof foil gauge 4 will use solder joint to be about 1mm are alternately welded on the root of toothholder 3 equably, each toothholder 3 installs two foil gauges 4 according to vertical and parallel toothholder bottom direction, so just can obtain the stressed size and Orientation of toothholder.
2), make foil gauge connecting line 5 in order, use the iron sheet 6 that thickness is 1mm to move towards to use spot welding machine on cut head body 1 along foil gauge connecting line 5, foil gauge connecting line 5 is wrapped in iron sheet 6 inner, play a protective role.
3), by foil gauge connecting line 5 be connected on data acquisition emitter 7, and data acquisition emitter 7 is fixed on inside cut head body 1, the impact of stone of avoiding dropping.
4), repeat above-mentioned steps, the foil gauge 4 be welded on other toothholders 3 by point, by connecting line 5, is connected on data acquisition emitter 7, and properly protects with iron sheet 6 simultaneously.
5), by the pick 2 pulled down be in place, debugging is good starts cutting test together.Cutting test is according to the raw data in cutting head design, as rotating speed, haulage speed, rock hardness etc. carry out actual cut, in process of the test, test figure can store within it by data acquisition emitter 7, be transmitted to receiving trap simultaneously, so both can be complete that derived data also can according to real-time data variation Adjustment Tests operational factor in process of the test after off-test.
6), collect data after, to data analysis.The data of cutting test operational factor and collection are one to one, the design parameters such as the locus of the data of each pick are also corresponding pick, from cutting head optimal design and performance evaluation, checking design opinion, set up the aspects such as design database and are further analyzed data.

Claims (2)

1. cutting head toothholder strain detection testing device under a Vertical Axis Road-header cut operating mode, it is characterized in that comprising the upper foil gauge (4) installed of the toothholder (3) cutting head being positioned at same helix, each toothholder (3) installs two foil gauges (4) according to vertical and parallel toothholder (3) bottom direction, foil gauge (4) connects data acquisition emitter (7) by foil gauge connecting line (5), data acquisition emitter (7) is mounted on cut head body (1) inner side, foil gauge connecting line (5) is coated with iron sheet (6) through the position of cut head body (1), iron sheet (6) is welded on cut head body (1).
2. a cutting head toothholder strain testing method under Vertical Axis Road-header cut operating mode, is characterized in that step is as follows:
1) toothholder (3) cutting head is positioned on same helix, is selected, remove pick (2), foil gauge (4) uses spot welder both sides to be alternately welded on the root of toothholder (3) equably, each toothholder (3) installs two foil gauges (4) according to vertical and parallel toothholder bottom direction
2), make foil gauge connecting line (5) in order, use the iron sheet (6) that thickness is 1mm to cover on foil gauge connecting line (5) along foil gauge connecting line (5) trend, use spot welder to be welded on cut head body (1) by iron sheet (6),
3), by foil gauge connecting line (5) be connected on data acquisition emitter (7), and data acquisition emitter (7) be fixed on cut head body (1) inner side,
4), repeat above-mentioned steps, the foil gauge on other toothholders be installed, and be connected on data acquisition emitter by foil gauge connecting line, and properly protect with iron sheet simultaneously,
5), by the pick pulled down (2) be in place, debug and start cutting test, test figure can store within it by data acquisition emitter (7), complete reading to be tested, or in process of the test, be transmitted to receiving device real-time analysis.
CN201210423715.9A 2012-10-30 2012-10-30 Cutting head toothholder strain detection testing device and method thereof under Vertical Axis Road-header cut operating mode CN103090841B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2353546A (en) * 1999-08-25 2001-02-28 Schlumberger Holdings Controlling the production - e.g. depletion rate - of a hydrocarbon well using remote sensors and a communication network
CN101581219A (en) * 2008-05-16 2009-11-18 中国科学院力学研究所 Device and method for measurement while drilling of ground stress
CN201402520Y (en) * 2009-05-14 2010-02-10 长安大学 Bridge strain collecting instrument based on wireless sensing network interface
CN201526315U (en) * 2009-11-10 2010-07-14 西安科技大学 Drilling parameter acquisition device using acoustic wave for transmission through drill rod
CN202928555U (en) * 2012-10-30 2013-05-08 中国煤炭科工集团太原研究院 Strain test device for longitudinal road header cutting head toothholder under cutting condition

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2353546A (en) * 1999-08-25 2001-02-28 Schlumberger Holdings Controlling the production - e.g. depletion rate - of a hydrocarbon well using remote sensors and a communication network
CN101581219A (en) * 2008-05-16 2009-11-18 中国科学院力学研究所 Device and method for measurement while drilling of ground stress
CN201402520Y (en) * 2009-05-14 2010-02-10 长安大学 Bridge strain collecting instrument based on wireless sensing network interface
CN201526315U (en) * 2009-11-10 2010-07-14 西安科技大学 Drilling parameter acquisition device using acoustic wave for transmission through drill rod
CN202928555U (en) * 2012-10-30 2013-05-08 中国煤炭科工集团太原研究院 Strain test device for longitudinal road header cutting head toothholder under cutting condition

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