CN103090841A - Cutting head tooth holder strain testing device under cutting working conditions of longitudinal shaft heading machine and method thereof - Google Patents

Cutting head tooth holder strain testing device under cutting working conditions of longitudinal shaft heading machine and method thereof Download PDF

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Publication number
CN103090841A
CN103090841A CN2012104237159A CN201210423715A CN103090841A CN 103090841 A CN103090841 A CN 103090841A CN 2012104237159 A CN2012104237159 A CN 2012104237159A CN 201210423715 A CN201210423715 A CN 201210423715A CN 103090841 A CN103090841 A CN 103090841A
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China
Prior art keywords
cutting head
cutting
toothholder
foil gauge
data acquisition
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CN2012104237159A
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Chinese (zh)
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CN103090841B (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 invention belongs to the technical field of testing under the cutting working conditions of a cutting head of a heading machine, in particular to a cutting head tooth holder strain testing device under the cutting working conditions of a longitudinal shaft heading machine and a method of the cutting head tooth holder strain testing device, and solves the problems that due the fact that working conditions are severe, existing researches on the actual stress of the tooth holder under the cutting working conditions of the cutting head are quite few, and therefore the development of the cutting head technology of the heading machine is affected to a certain degree. The cutting head tooth holder strain testing device comprises strain sheets, wherein the strain sheets are connected with a wireless data acquisition and transmission device, and the wireless data acquisition and transmission device is fixedly mounted on the inner side of a cutting head body. The method of the cutting head tooth holder strain testing device includes the steps that the two strain sheets are installed, strain sheet connecting wires are connected on the wireless data acquisition and transmission device, dismantled cutting teeth are mounted in place, a cutting test is started after the cutting teeth are well debugged, and then test data can be stored in the wireless data acquisition and transmission device. The cutting head tooth holder strain testing device under the cutting working conditions of the longitudinal shaft heading machine and the method of the cutting head tooth holder strain testing device have the advantages that strain data acquisition of the tooth holder in the cutting process of the cutting head is realized, and true data is provided for a design theory and a design method of the cutting head.

Description

Cutting head toothholder strain detection testing device and method thereof under Vertical Axis Road-header cut operating mode
Technical field
The invention belongs to the technical field of testing under cutting head of roadheader cut operating mode, be specifically related to a kind of cutting head toothholder strain detection testing device and method thereof under Vertical Axis Road-header cut operating mode, be 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, and usable range and environment variation are therefore also more and more high to the requirement of cutting head.Existing about cutting head theory and experimental study, comprise by hilted broadsword test, cutting test, but for the research aspect the actual loading of cutting head toothholder under the cut operating mode because operating mode is abominable, relate to so far lessly, remain a technological gap in industry.Its main cause is: in the cutting head cutting course, rock is extruded along the toothholder gap, easily with strain transducer and line damage thereof, and need in cutting course to spray water, common strain transducer can't use, add the rotation of cutting head, strain transducer is also very difficult with being connected of data collecting instrument.Make for these reasons the test of toothholder strain under cutting head cut operating mode progress never, thereby the checking of cutting head of roadheader design theory and improvement are caused to a certain degree impact.
Summary of the invention
Goal of the invention of the present invention: in prior art for the research aspect the actual loading of cutting head toothholder under the cut operating mode because operating mode is abominable, relate to very few, thereby the development of cutting head of roadheader technology is caused to a certain degree impact, the invention provides a kind of cutting head toothholder strain detection testing device and method thereof under 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 the foil gauge of installing on the toothholder that is positioned at the same helix on cutting head, according to vertical and parallel toothholder bottom direction, two foil gauges are installed on each toothholder, foil gauge connects the data acquisition emitter by the foil gauge connecting line, it is inboard that the data acquisition emitter is mounted on cut head body, the 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 to be positioned on cutting head the toothholder on the same helix, remove pick, foil gauge uses spot welder both sides alternately to be welded on equably the root of toothholder, on each toothholder according to two foil gauges of vertical and parallel toothholder bottom direction installation,
2), make the foil gauge connecting line in order, used thickness is that the iron sheet of 1mm covers on the foil gauge connecting line along foil gauge connecting line trend, uses spot welder that iron sheet is welded on cut head body,
3), the foil gauge connecting line is connected on the data acquisition emitter, and it is inboard that the data acquisition emitter is fixed on cut head body,
4), repeat above-mentioned steps, the foil gauge on other toothholders is installed, and is connected on the data acquisition emitter by the foil gauge connecting line, and properly protect with iron sheet simultaneously,
5), the pick of pulling down is in place, debugs and begin cutting test, the data acquisition emitter can be with the test figure storage within it, and complete reading to be tested perhaps is transmitted to the receiving device real-time analysis in process of the test.
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 3 d space coordinate and the angle of adjusting toothholder.
The invention solves following key issue: 1, make strain transducer in rock extruding and exist under the bad working environments of dedusting spraying to work,
2, make the strain transducer connecting line not be subjected to rock to overstock damage,
3, make strain signal normal collection and transmission in cutting head rotation process.
The present invention has following beneficial effect: realized the data acquisition of toothholder strain in the cutting head cutting course, for cutting head design theory and method provide real data, also for its further further investigation condition is provided.The invention solves in cutting course common foil gauge water funk, data line is easily by the rock block impact failure of cut, and the problem that the cutting head autobiography can't the connection data Acquisition Instrument can be applied in similar abominable test environment.
Description of drawings
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 the foil gauge 4 of installing on the toothholder 3 that is positioned at the same helix on cutting head, according to vertical and parallel toothholder 3 bottom direction, two foil gauges 4 are installed on each toothholder 3, 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 inboard, 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), will first pull down pick 2 before on the toothholder 3 of determining test, foil gauge 4 being installed, use means of spot welds that the waterproof foil gauge is arranged on toothholder by technological requirement.Toothholder on the Vertical Axis Road-header cutting head is generally arranged according to the helix pattern at present, is determined the number of helix by existing design theory and experience, is generally the 3-4 bar.Toothholder number on every helix and toothholder space angle and the structure of corresponding sequence number are also basic identical, and be corresponding stressed also identical, therefore as long as all toothholders on helix of test just are equivalent to complete the forces testing of whole cutting head toothholder.Waterproof foil gauge 4 will use solder joint alternately to be welded on equably the root of toothholder 3 as the spot welder both sides of about 1mm, according to two foil gauges 4 of vertical and parallel toothholder bottom direction installation, so just can obtain the stressed size and Orientation of toothholder on each toothholder 3.
2), make foil gauge connecting line 5 in order, used thickness is that the iron sheet 6 of 1mm moves towards to use spot welding machine on cut head body 1 along foil gauge connecting line 5, and foil gauge connecting line 5 is wrapped in iron sheet 6 inside, plays a protective role.
3), foil gauge connecting line 5 is connected on data acquisition emitter 7, and data acquisition emitter 7 is fixed on cut head body 1 inboard, the impact of the stone of avoiding dropping.
4), repeat above-mentioned steps, point is welded in foil gauge 4 on other toothholders 3 by connecting line 5, be connected on data acquisition emitter 7, and properly protect with iron sheet 6 simultaneously.
5), the pick 2 of pulling down is in place, the good cutting test that begins together of debugging.Cutting test is according to the raw data in the cutting head design, carry out actual cut as rotating speed, haulage speed, rock hardness etc., in process of the test, data acquisition emitter 7 can be with the test figure storage within it, be transmitted to simultaneously receiving trap, so both can be so complete that derived data also can be adjusted the test run parameter according to real-time data variation 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 data of each pick are the also corresponding design parameters such as locus of pick are from cutting head optimal design and performance evaluation, checking design opinion, set up the aspect such as design database data are further analyzed.

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) of installing of the toothholder (3) that is positioned at the same helix on cutting head, each toothholder (3) is upper 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) inboard, foil gauge connecting line (5) is coated with iron sheet (6) through the position of cut head's body (1), iron sheet (6) is welded on cut head body (1).
2. cutting head toothholder strain testing method under a Vertical Axis Road-header cut operating mode is characterized in that step is as follows:
1), select to be positioned on cutting head toothholder (3) on the same helix, remove pick (2), foil gauge (4) use spot welder both sides alternately are welded on the root of toothholder (3) equably, each toothholder (3) is upper installs two foil gauges (4) according to vertical and parallel toothholder bottom direction
2), make foil gauge connecting line (5) in order, used thickness is that the iron sheet (6) of 1mm covers on foil gauge connecting line (5) along foil gauge connecting line (5) trend, uses spot welder that iron sheet (6) is welded on cut head body (1),
3), foil gauge connecting line (5) is connected on data acquisition emitter (7), and data acquisition emitter (7) is fixed on cut head body (1) inboard,
4), repeat above-mentioned steps, the foil gauge on other toothholders is installed, and is connected on the data acquisition emitter by the foil gauge connecting line, and properly protect with iron sheet simultaneously,
5), the pick (2) of pulling down is in place, debugs and begin cutting test, data acquisition emitter (7) can be with the test figure storage within it, and complete reading to be tested perhaps is transmitted to the receiving device real-time analysis in process of the test.
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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