CN101699218A - Hydraulic support and height measuring device thereof - Google Patents
Hydraulic support and height measuring device thereof Download PDFInfo
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- CN101699218A CN101699218A CN200910209361A CN200910209361A CN101699218A CN 101699218 A CN101699218 A CN 101699218A CN 200910209361 A CN200910209361 A CN 200910209361A CN 200910209361 A CN200910209361 A CN 200910209361A CN 101699218 A CN101699218 A CN 101699218A
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Abstract
The invention discloses a height measuring device of hydraulic support, comprising a first rotating wheel (21) and a second rotating wheel (22); wherein the first rotating wheel (21) and the second rotating wheel (22) are respectively rotatably arranged on the base (01) of the hydraulic support; a first terminal of height measuring line (23) is fixed on the first rotating wheel (21) and wound on the first rotating wheel (21) along circumferential direction, a second terminal thereof circles the second rotating wheel (22) and fixed on the top beam (02) of the hydraulic support, and the second rotating wheel (22) is provided with a rotary encoder (27). The height measuring device realizes accurate real-time detection on the height of the hydraulic support while the hydraulic support is hoisted, and the rotating wheel, height measuring line and rotary encoder are conventional purchased parts and low in cost, thus reducing production cost of height measuring device; and meanwhile, parts such as the rotating wheel and the like has higher work reliability and is difficult to be damaged, thus prolonging the service life of the height measuring device.
Description
Technical field
The present invention relates to the coal excavation apparatus technical field, particularly a kind of height measuring device that is used for hydraulic support.The invention still further relates to a kind of hydraulic support that comprises above-mentioned height measuring device.
Background technology
Along with the fast development of China's economic construction, industry such as coal constantly develop towards the direction of mechanization, robotization, and comprehensive mechanical coal mining equipment is applied in the various coal mining constructions more and more widely.Hydraulic support is the important component part of comprehensive mechanical coal mining equipment, and it can reliably and effectively support and control the top board of coal-face, isolates the goaf, prevents that spoil from entering coal face.
Please refer to Fig. 1, Fig. 1 is a kind of structural representation of typical hydraulic support.
Typical hydraulic support generally comprises base 5, the appropriate location of base 5 is equipped with column 4, and (column is a kind of of hydraulic cylinder, moving up and down of telescopic drive miscellaneous part by the cylinder bar), the cylinder bottom of column 4 is installed on the above-mentioned base 5, and its cylinder bar is installed on extensible canopy 1 or back timber 2, with by the stretching out and withdraw of column 4, drive extensible canopy 1 and back timber 2 rises and descends.
The supporting use of hydraulic support and coalcutter, realized comprehensive mechanical coal mining, roof control lags behind the contradiction of coal work in the solution mechanical coal mining work, improve the usefulness of coal mining and transportation equipment, alleviate the labour intensity of coal miner, ensured the life security of coal miner, the adaptability of hydraulic support and reliability have considerable influence to the security and the production efficiency of performing comprehensive coal mining operations.
In the course of work of hydraulic support, need to detect its height, and the height of hydraulic support is regulated, thereby make the height of hydraulic support remain on the state that comparatively is fit to construction environment according to the variation of construction environment.
Because hand dipping hydraulic support elevation accuracy is lower, and wastes time and energy, therefore, at present height that are installed on the displacement sensor hydraulic support on the hydraulic support that use more.One end of displacement transducer is installed on the base 5, and the other end is installed on extensible canopy 1 or the back timber 2, and when extensible canopy 1 and back timber 2 risings or decline, displacement transducer is lifting thereupon, thereby obtains the instantaneous height of hydraulic support according to the variation of position.But, waiting in the operation occasion in coal mining, displacement transducer is easier to be damaged, and serviceable life is lower, and the cost of displacement transducer is higher, thereby has increased the use cost of height measuring device.
Therefore, how under the prerequisite that guarantees measuring accuracy, improve the serviceable life of height measuring device, and reduce production costs, just become the problem that those skilled in the art need solve.
Summary of the invention
The purpose of this invention is to provide a kind of height measuring device, its measuring accuracy is higher, and has long serviceable life and lower production cost.Another object of the present invention provides a kind of hydraulic support that comprises above-mentioned height measuring device.
For solving the problems of the technologies described above, the invention provides a kind of height measuring device of hydraulic support, comprise first runner and second runner, described first runner and described second runner are rotatably mounted in the base of hydraulic support respectively; First end of surveying high line is fixed in described first runner, and along circumferentially being wound in described first runner, its second end is walked around second runner, and be fixed in the back timber of described hydraulic support, moving described second runner rotation of the high tape of described survey, described second runner is equipped with pick-up unit, so that measure the displacement of the lines of the described second runner outer ring; In described first rotating shaft resetting means is installed,, drives the described second runner backward rotation so that in described back timber decline process.
Preferably, described pick-up unit comprises,
Rotary encoder is in order to detect the rotation number of turns of described second runner;
Control device, the height that calculates described back timber in order to the rotation number of turns and predetermined policy according to detected described second runner.
Preferably, described first runner is by being installed on described base along its stationary shaft that axially is provided with; Described resetting means is the clockwork spring that is installed between described first runner and the described stationary shaft.
Preferably, comprise also and be fixed in described base and form the erecting frame of cavity that described first runner and described second runner all are arranged in described cavity with described base.
Preferably, also comprise first angle sheave that is installed on described underframe, second end of the high line of described survey is fixed in described back timber after walking around described first angle sheave; Described first angle sheave is divided into the high line of described survey near the first of described first end and the second portion of close described second end, so that described second portion is generally along the vertical direction setting.
Preferably, described first angle sheave is installed on described base by guiding trestle.
Preferably, also comprise second angle sheave that is installed on described erecting frame, described second angle sheave is divided into the high line of described survey away from the leading portion of described first angle sheave and the back segment of close described first angle sheave, so that described back segment is generally along the horizontal direction setting.
Preferably, the diameter of described first runner is greater than the diameter of described second runner.
The present invention also provides a kind of hydraulic support, comprises above-mentioned each described height measuring device.
The present invention also provides a kind of hydraulic support, comprises above-mentioned each described height measuring device.
The height measuring device of hydraulic support provided by the present invention comprises first runner and second runner, and described first runner and described second runner are rotatably mounted in the base of hydraulic support respectively; First end of surveying high line is fixed in described first runner, and along circumferentially being wound in described first runner, its second end is walked around second runner, and be fixed in the back timber of described hydraulic support, moving described second runner rotation of the high tape of described survey, described second runner is equipped with pick-up unit, so that measure the displacement of the lines of the described second runner outer ring; In described first rotating shaft resetting means is installed,, drives the described second runner backward rotation so that in described back timber decline process.When hydraulic support raises, second end that is fixed in the high line of survey on its back timber increases, surveying high line is drawn out, owing to survey between high line and first runner and second runner and all have friction force, then first runner and second runner are with surveying stretching out and rotating around its axis separately of high line, the rotary encoder that is installed on second gear rotates synchronously with second gear, and can access the rotation number of turns of second gear, diameter according to second gear of importing rotary encoder in advance, rotary encoder can be exported instantaneous hydraulic support height, realized when hydraulic support raises, the comparatively accurate of its height being detected in real time, and, runner, survey high line and rotary encoder and be conventional outsourcing piece, cost is lower, thereby has reduced the production cost of height measuring device; And the dependability of parts such as runner is higher, and is not fragile, thus the serviceable life of having improved height measuring device.
A kind of preferred embodiment in, above-mentioned first runner is by being installed on the base of hydraulic support along its stationary shaft that axially is provided with, and is provided with clockwork spring between first runner and the stationary shaft.When hydraulic support raise, when above-mentioned first runner rotated with stretching out of the high line of survey, clockwork spring tightened up thereupon, and when hydraulic support reduces, clockwork spring can discharge the pretightning force of storage, in the open process of clockwork spring, drives and surveys high line withdrawal, thereby, not only when hydraulic support raises, can detect its height in real time, when hydraulic support descends, also can detect its instantaneous height in real time, thereby enlarged the usable range of height measuring device, improved its applicability.
Description of drawings
Fig. 1 is a kind of structural representation of typical hydraulic support;
Fig. 2 is the structural representation of a kind of embodiment of height measuring device provided by the present invention;
Fig. 3 is a cross-sectional schematic of carrying height measuring device shown in Figure 2;
Fig. 4 is the structural representation of a kind of embodiment of hydraulic support provided by the present invention.
Embodiment
Core of the present invention provides a kind of height measuring device, and its measuring accuracy is higher, and has long serviceable life and lower production cost.Another core of the present invention provides a kind of hydraulic support that comprises above-mentioned height measuring device.
In order to make those skilled in the art person understand technical scheme of the present invention better, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 2, Fig. 2 is the structural representation of a kind of embodiment of height measuring device provided by the present invention.
In a kind of embodiment, height measuring device provided by the present invention is used for detecting in real time the rising height of hydraulic support.Comprise first runner 21 and second runner 22, described first runner 21 and described second runner 22 are rotatably mounted in the base 01 of hydraulic support respectively; First end of surveying high line 23 is fixed in described first runner 21, and along circumferentially being wound in described first runner 21, its second end is walked around second runner 22, and be fixed in the back timber 02 of described hydraulic support, the high line 23 of described survey drives 22 rotations of described second runner, described second runner 22 is equipped with pick-up unit, so that measure the displacement of the lines of described second runner 22 outer rings; In described first rotating shaft 21 resetting means is installed,, drives described second runner, 22 backward rotation so that in described back timber decline process.
Above-mentioned first runner 21 and second runner 22 can be the conventional runner that uses in this area, two runners can be under the driving of external force, around the axis rotation of himself, the diameter of first runner 21 and second runner 22, and parameter such as axial height can be determined by the actual behaviour in service of height measuring device.In addition, the base 01 that above-mentioned first runner 21 and second runner 22 are rotatably mounted in hydraulic support is meant, first runner 21 and second runner 22 can be with respect to the axis rotation of base 01 around himself, first runner 21 and second runner 22 can be any usual manner that can realize above function with the mounting means of base 01, and its concrete mounting means is not done qualification at this.
Apparently, in the use of reality, the rising limiting altitude difference of hydraulic support, therefore, the length of the high line 23 of above-mentioned survey should determine according to the limiting altitude that the hydraulic support needs raise, and on the theory, surveys the limiting altitude that the length of high line 23 should need raise greater than hydraulic support, and, survey high line 23 and should have less elasticity; In addition, survey high line 23 be fixed on first runner 21 concrete connected mode can for, the conventional connected mode of linear drag-line and wheeled construction can certainly be unconventional connected mode, its concrete connected mode is not done qualification at this.
Above-mentioned detection device can comprise, in order to the rotary encoder 27 of the rotation number of turns that detects described second runner 22, and the control device of the height that calculates described back timber in order to the rotation number of turns and predetermined policy according to detected described second runner 22.The above-mentioned rotary encoder 27 that is installed on second runner 22 can be the conventional rotation sensor that uses in this area, and its concrete form and principle of work please refer to prior art, do not repeat them here.Certainly, above-mentioned detection device also is not limited to rotary encoder 27.
When hydraulic support raises, second end that is fixed in the high line 23 of survey of its back timber increases, surveying high line 23 is drawn out, owing to survey between high line 23 and first runner 21 and second runner 22 and all have friction force, then first runner 21 and second runner 22 are with surveying stretching out and rotating around its axis separately of high line 23, the rotary encoder 27 that is installed on second runner 22 rotates synchronously with second runner 22, and can access the rotation number of turns of second runner 22, diameter according to second runner 22 of importing rotary encoder 27 in advance, rotary encoder 27 can be exported instantaneous hydraulic support height, realized when hydraulic support raises, the comparatively accurate of its height being detected in real time, and, runner, survey high line and rotary encoder and be conventional outsourcing piece, cost is lower, thereby has reduced the production cost of height measuring device; And the dependability of parts such as runner is higher, and is not fragile, thus the serviceable life of having improved height measuring device.
Can also be further improved height measuring device provided by the present invention.
Please refer to Fig. 3, and in the lump with reference to figure 2; Fig. 3 is a cross-sectional schematic of carrying height measuring device shown in Figure 2.
On the basis of above-mentioned embodiment, height measuring device provided by the present invention can also comprise stationary shaft, this stationary shaft is arranged at the appropriate location of the base 01 of hydraulic support, above-mentioned first runner 21 is installed on base 01 by stationary shaft, and between first runner 21 and the stationary shaft bearing 25 is installed; Apparently, the said fixing axle, can rotate around the said fixing axle with respect to base 01 owing to bearing 25, the first rotating shafts 21 are installed under the effect of external force between the two along the axial setting of first runner 21; Between above-mentioned first rotating shaft 21 and stationary shaft, can also be provided with clockwork spring 24, when hydraulic support raises, above-mentioned first runner 21 with survey high line 23 stretch out and when rotating, clockwork spring 24 tightens up thereupon, and when hydraulic support reduces, clockwork spring 24 can discharge the pretightning force that stores, in clockwork spring 24 open processes, drive the withdrawal of surveying high line 23, thereby, not only when raising, hydraulic support can detect its height in real time, when hydraulic support descends, also can detect its instantaneous height in real time, thereby enlarge the usable range of height measuring device, improve its applicability.
It is pointed out that height measuring device provided by the present invention generally is installed on the base 01 by surveying high base plate, like this, the screw retention that stationary shaft screws in by the high floor below of testing oneself is in surveying on the high base plate, thereby is fixed on the base 01.Install simple and conveniently, and be convenient to dismounting, simplified maintenance and installation procedure.
Above-mentioned clockwork spring 24 can be the conventional clockwork spring that uses in this area.Each parameter such as its elasticity coefficient should determine that on the theory, the elasticity coefficient of clockwork spring 24 can be bigger according to operating position, so that it has bigger back stretch, increases the decohere of surveying high line 23.
On the basis of above-mentioned embodiment, height measuring device provided by the present invention can also comprise erecting frame 26, erecting frame 26 is fixed in the appropriate location of base 01, and mount pad 26 can be tower structure, form cavity between itself and the base 01, above-mentioned first runner 21 and second runner 22 all can be arranged in the cavity of above-mentioned mount pad 26 and base 01 formation, to improve the security performance of height measuring device; The two ends of said fixing axle are individually fixed on base 01 and the mount pad 26, and pass the cavity of the two formation; At this moment, this stationary shaft can be specially forms such as pin or screw, so that when needs are pulled down mount pad 26, only needs pin or screw are pulled down, and has simplified the process of changing and safeguarding.
On the above-mentioned underframe 01 first angle sheave 281 can also be installed, second end of surveying high line 23 is walked around the appropriate location of being fixed in back timber 02 behind first angle sheave 281.Like this, survey that high line 23 stretches out and the process regained in, through the guide effect of first angle sheave 281, the direction of avoiding surveying high line 23 is offset.
Apparently, the high line 23 of above-mentioned survey is walked around second runner 22 earlier, after walk around first angle sheave 281, therefore, first angle sheave 281 is generally positioned at the rear end of second runner 22.
Above-mentioned first angle sheave 281 can be installed on the appropriate location of underframe 01 by guiding trestle 282, so that better first angle sheave 281 is fixed in underframe 01, and has simplified disassembly process.
The appropriate location of above-mentioned erecting frame 26 can also be equipped with the second guiding runner 29, and the high line 23 of above-mentioned survey is walked around second angle sheave 29 with its second end, with further avoid surveying high line 23 stretch out and the withdrawal process in be offset.
The diameter of above-mentioned first runner 21 can be wound on two runners will survey high line 23 preferably greater than the diameter of second runner 22.Apparently, the diameter of above-mentioned first runner 21 also can be equal to or less than the diameter of second runner 22, and the ratio of diameter range of the two and diameters determines that according to the real work situation the concrete numerical value of each parameter should not be subjected to the restriction of this instructions.
The material of the high line 23 of above-mentioned survey can be for having the material of big friction factor, to improve the servo-actuated of surveying 23 pairs first runners 21 of high line and second runner 22.Certainly, on the theory, the material of surveying high line 23 is not limited to the big material of friction factor.And, because the height number that calculates is relevant with the diameter of second runner 22, under the condition of assurance pulling strengrth, should select the high line 23 of thinner survey as far as possible, high line 23 is wound in second runner 22 and to the influence of measuring accuracy to avoid surveying.
Please refer to Fig. 4, Fig. 4 is the structural representation of a kind of embodiment of hydraulic support provided by the present invention.
Except above-mentioned height measuring device, the present invention also provides a kind of hydraulic support that comprises above-mentioned height measuring device, and the structure of these other each several parts of hydraulic support please refer to prior art, no longer does too much at this and gives unnecessary details.
More than a kind of hydraulic support provided by the present invention and height measuring device thereof are described in detail.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (9)
1. the height measuring device of a hydraulic support is characterized in that, comprises first runner (21) and second runner (22), and described first runner (21) and described second runner (22) are rotatably mounted in the base (01) of hydraulic support respectively; First end of surveying high line (23) is fixed in described first runner (21), and along circumferentially being wound in described first runner (21), its second end is walked around second runner (22), and be fixed in the back timber (02) of described hydraulic support, the high line of described survey (23) drives described second runner (22) rotation, described second runner (22) is equipped with pick-up unit, so that measure the displacement of the lines of described second runner (22) outer ring; In described first rotating shaft (21) resetting means is installed,, drives described second runner (22) backward rotation so that in described back timber decline process.
2. the height measuring device of hydraulic support according to claim 1 is characterized in that, described pick-up unit comprises,
Rotary encoder (27) is in order to detect the rotation number of turns of described second runner (22);
Control device, the height that calculates described back timber in order to the rotation number of turns and predetermined policy according to detected described second runner (22).
3. the height measuring device of hydraulic support according to claim 2, it is characterized in that, described first runner (21) is by being installed on described base (01) along its stationary shaft that axially is provided with, and described resetting means is for being installed on the clockwork spring between described first runner (21) and the described stationary shaft.
4. the height measuring device of hydraulic support according to claim 3, it is characterized in that, comprise also and be fixed in described base (01) and form the erecting frame (26) of cavity that described first runner (21) and described second runner (22) all are arranged in described cavity with described base (01).
5. the height measuring device of hydraulic support according to claim 4, it is characterized in that, also comprise first angle sheave (281) that is installed on described underframe (01), second end of the high line of described survey (23) is fixed in described back timber (02) after walking around described first angle sheave (281); Described first angle sheave (281) is divided into the high line of described survey (23) near the first of described first end and the second portion of close described second end, so that described second portion is generally along the vertical direction setting.
6. the height measuring device of hydraulic support according to claim 5 is characterized in that, described first angle sheave (281) is installed on described base (01) by guiding trestle (282).
7. the height measuring device of hydraulic support according to claim 6, it is characterized in that, also comprise second angle sheave (29) that is installed on described erecting frame (26), described second angle sheave (29) is divided into the high line of described survey (23) away from the leading portion of described first angle sheave (281) and the back segment of close described first angle sheave (281), so that described back segment is generally along the horizontal direction setting.
8. according to the height measuring device of each described hydraulic support of claim 1 to 7, it is characterized in that the diameter of described first runner (21) is greater than the diameter of described second runner (22).
9. a hydraulic support is characterized in that, comprises each described height measuring device of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910209361A CN101699218A (en) | 2009-11-04 | 2009-11-04 | Hydraulic support and height measuring device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910209361A CN101699218A (en) | 2009-11-04 | 2009-11-04 | Hydraulic support and height measuring device thereof |
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| CN101699218A true CN101699218A (en) | 2010-04-28 |
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| CN200910209361A Pending CN101699218A (en) | 2009-11-04 | 2009-11-04 | Hydraulic support and height measuring device thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108168513A (en) * | 2018-02-27 | 2018-06-15 | 北京天地玛珂电液控制系统有限公司 | A kind of hydraulic support height measuring device and method |
| CN110821542A (en) * | 2018-08-07 | 2020-02-21 | 卡特彼勒环球矿业欧洲有限公司 | Self-propelled roof support for longwall mining systems |
| CN112524109A (en) * | 2020-12-02 | 2021-03-19 | 辽宁工程技术大学 | Four-point hoisting balance method for hydraulic support |
-
2009
- 2009-11-04 CN CN200910209361A patent/CN101699218A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108168513A (en) * | 2018-02-27 | 2018-06-15 | 北京天地玛珂电液控制系统有限公司 | A kind of hydraulic support height measuring device and method |
| CN110821542A (en) * | 2018-08-07 | 2020-02-21 | 卡特彼勒环球矿业欧洲有限公司 | Self-propelled roof support for longwall mining systems |
| CN110821542B (en) * | 2018-08-07 | 2024-05-10 | 卡特彼勒公司 | Self-propelled roof rack for longwall mining system |
| CN112524109A (en) * | 2020-12-02 | 2021-03-19 | 辽宁工程技术大学 | Four-point hoisting balance method for hydraulic support |
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Open date: 20100428 |