CN110761824B - Automatic straight-line walking advanced hydraulic support - Google Patents
Automatic straight-line walking advanced hydraulic support Download PDFInfo
- Publication number
- CN110761824B CN110761824B CN201911140609.8A CN201911140609A CN110761824B CN 110761824 B CN110761824 B CN 110761824B CN 201911140609 A CN201911140609 A CN 201911140609A CN 110761824 B CN110761824 B CN 110761824B
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- supporting
- magnetic poles
- controller
- guide rail
- support
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- 238000005553 drilling Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 8
- 239000000725 suspension Substances 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000005065 mining Methods 0.000 description 5
- 238000005339 levitation Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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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
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
-
- 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
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses an advanced hydraulic support capable of automatically and linearly walking, which comprises a supporting top beam; a first extending device and a second extending device are respectively arranged on two sides of the supporting top beam; the end parts of the first extending device and the second extending device are respectively hinged with a first side protection plate and a second side protection plate; the bottom of the supporting top beam is provided with a plurality of groups of supporting hydraulic upright columns, and the bottom of each group of supporting hydraulic upright columns is fixed at the top of the base; the bottom of the base is provided with a U-shaped groove for accommodating the guide rail; a plurality of groups of first magnetic poles and second magnetic poles which are mutually suspended after being electrified are symmetrically arranged from the two side edges of the guide rail to the two inner side walls of the U-shaped groove respectively; the first magnetic pole is electrically connected with the first controller, and the second magnetic pole is electrically connected with the second controller. Has the advantages that: the degree of difficulty that has effectually solved the manual work through the magnetic suspension technique, simultaneously, the linear motion that adopts mechanical structure replaces the manual work to pull the mode that keeps the straight line, can guarantee that the motion of base and support back timber is the straight line all the time by more efficient.
Description
Technical Field
The invention relates to the field of mining machinery, in particular to an advanced hydraulic support capable of automatically and linearly walking.
Background
Along with the rapid improvement of the mechanical automation degree of the fully-mechanized mining face, the requirements of ventilation, transportation and mining processes on the sizes of two sections are increasingly greater, and the traditional working face advance support mode is not suitable for the requirements of safe and efficient fully-mechanized mining face on advance support from the aspects of support capacity, support height, automation degree, operability and safety.
Especially, the prior advance hydraulic support has two problems:
firstly, the advance hydraulic support can move forwards only by manual dragging, so that the labor intensity and the labor time of workers are greatly increased, and the working efficiency is reduced.
No matter it is artifical drag or the advance hydraulic support of formula of moving certainly that already exists all has the antedisplacement in-process, the problem of unable automatic alignment, at the in-process that advances each time, the advance support has small skew, after constantly accumulating, after the skew error reaches a definite value, the side guard of advance support has in the coal wall of card entry tunnel one side, leads to unable continuation antedisplacement to influence the coal mining progress, reduce work efficiency.
In order to overcome the above disadvantages, a new type of advanced hydraulic support capable of automatically walking and automatically keeping straight walking is needed.
Disclosure of Invention
The invention provides an advanced hydraulic support capable of automatically and linearly walking, and aims to solve the problems that a hydraulic support is difficult to pull manually and cannot be automatically straightened during walking in the background art.
In order to achieve the purpose, the invention adopts the following technical scheme:
an advance hydraulic support capable of automatically and linearly walking comprises a support top beam;
a first extending device and a second extending device which are telescopic relative to the supporting top beam are respectively arranged on the two sides of the supporting top beam; the end parts of the first extending device and the second extending device are respectively hinged with a first side protection plate and a second side protection plate; the first extending device and the first side protecting plate as well as the first side protecting plate and the second side protecting plate are respectively hinged with two ends of the plurality of pushing telescopic cylinders; the bottom of the supporting top beam is provided with a plurality of groups of supporting hydraulic upright columns, and the bottom of each group of supporting hydraulic upright columns is fixed at the top of the base; the bottom of the base is provided with a U-shaped groove for accommodating the guide rail;
a plurality of groups of first magnetic poles and second magnetic poles which are mutually suspended after being electrified are symmetrically arranged from the two side edges of the guide rail to the two inner side walls of the U-shaped groove respectively, and the first magnetic poles and the second magnetic poles are linearly arranged at equal intervals; the first magnetic pole is electrically connected with the first controller, and the second magnetic pole is electrically connected with the second controller; a plurality of first supporting oil cylinders are respectively and vertically fixed on the bottom surface of the guide rail, and liquid inlets of all the first supporting oil cylinders are communicated; and the bottoms of the first supporting oil cylinders are provided with positioning devices.
Furthermore, telescopic oil cylinders are respectively arranged in the first extending device, the second extending device and the supporting top beam.
Further, each set of first magnetic poles includes: the electromagnets are electrically connected with the first controller and sequentially overlapped; each set of second magnetic poles includes: a plurality of electromagnets which are electrically connected with the second controller and are sequentially superposed; after each group of first magnetic poles and each group of second magnetic poles are electrified, the polarities of the electromagnets on the same side are opposite; the second controller further includes: and the switching control circuit controls all the second magnetic poles which are linearly arranged to sequentially change the polarity.
Further, all the first support cylinders are connected with an external first hydraulic pressure source.
Furthermore, a plurality of second supporting oil cylinders are respectively and vertically fixed on the bottom surface of the base, and liquid inlets of all the second supporting oil cylinders are communicated; and a positioning device is arranged at the bottom of the second supporting oil cylinder.
Further, the positioning device includes: rock drilling apparatus with the tip facing downwards.
Further, the drilling device is a pneumatic drill.
Compared with the prior art, the invention has the following beneficial effects: the degree of difficulty that has effectually solved the manual work through the magnetic suspension technique, simultaneously, the linear motion that adopts mechanical structure replaces the manual work to pull the mode that keeps the straight line, can guarantee that the motion of base and support back timber is the straight line all the time by more efficient.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is another schematic structural view of the present invention;
FIG. 3 is a schematic view of the magnetic field of the guide rail levitated within the base;
FIG. 4 is a schematic view of the magnetic field of the guide rail moving within the base;
fig. 5 is a schematic structural view of the drilling device.
In the figure, 1 supports the top beam, 11 first extending devices, 12 first side protection plates, 13 second extending devices, 14 second side protection plates, 15 push telescopic cylinders, 2 supports the hydraulic column, 3 bases, 4 guide rails, 5 first magnetic poles, 6 second magnetic poles, 7 first supporting oil cylinders, 8 second supporting oil cylinders, 9 positioning devices and 91 drilling devices.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
As shown in fig. 1 and 2, an automatic straight-traveling hydraulic advance support includes a support cap 1;
a first extension device 11 and a second extension device 13 which are telescopic relative to the support top beam 1 are respectively arranged at two sides of the support top beam 1; wherein the ends of the first extension device 11 and the second extension device 13 are respectively hinged with a first side protection plate 12 and a second side protection plate 14; the first extending device 11 and the first side protection plate 12 are hinged with the first side protection plate 12 and the second side protection plate 14 at two ends of a plurality of pushing and extending cylinders 15 respectively. Specifically, telescopic oil cylinders are respectively arranged inside the first extending device 11, the second extending device 13 and the supporting top beam 1. In roadway roof support, the extension lengths of a first extension device 11 and a second extension device 13 can be controlled through a telescopic oil cylinder, and the extension lengths of a first side protection plate 12 and a second side protection plate 14 are controlled through a push telescopic cylinder 15 and are used for supporting a roadway.
When the supporting top beam 1 is used for supporting, a plurality of groups of supporting hydraulic upright columns 2 are arranged at the bottom of the supporting top beam 1, and the bottom of each group of supporting hydraulic upright columns 2 is fixed at the top of the base 3; the bottom of the base 3 is provided with a U-shaped groove for accommodating the guide rail 4.
A plurality of groups of first magnetic poles 5 and second magnetic poles 6 which are electrified and then keep mutually suspended are symmetrically arranged from two side edges of the guide rail 4 to two inner side walls of the U-shaped groove respectively, and the first magnetic poles 5 and the second magnetic poles 6 are kept in linear equidistant arrangement; wherein the first magnetic pole 5 is electrically connected with a first controller, and the second magnetic pole 6 is electrically connected with a second controller. The circuit connection between the first controller and the second controller may be a magnetic levitation technology known at present, or may be other known technologies.
As shown in fig. 3 and 4, wherein each set of first magnetic poles 5 includes: a plurality of electromagnets electrically connected with the first controller and sequentially superposed.
Each set of second poles 6 comprises: a plurality of electromagnets electrically connected with the second controller and sequentially superposed. After each group of the first magnetic poles 5 and each group of the second magnetic poles 6 are electrified, the polarities of the electromagnets on the same side are opposite. Wherein the second controller further comprises: and a switching control circuit for controlling all the second magnetic poles 6 arranged in a straight line to sequentially change the polarity. As shown in fig. 3, the working principle of the suspension of the guide rail 4 in the base 3 is as follows: the magnetic properties of the second pole 6 are influenced by the magnetic properties of the first pole 5. As shown in fig. 3, the lower N pole of the second magnetic pole 6 is subjected to the repulsive force of the lower N pole of the first magnetic pole 5 on the same side and to the attractive force of the upper S pole of the lower N pole of the first magnetic pole 5, so that the guide rail 4 is suspended in the base 3.
Similarly, in order to move the guide rail 4 or the base 3, as shown in fig. 4 and 5, all the second magnetic poles 6 installed on the guide rail 4 may be sequentially controlled by the second controller to sequentially change the magnetic property so as to move the guide rail 4 or the base 3 in imitation of the magnetic levitation propulsion technology. The circuit connection of the second controller can be implemented by referring to the currently known magnetic levitation technology or other known prior art.
In order to enable the guide rail 4 to have the characteristic of self-adaptation, a plurality of first supporting oil cylinders 7 are respectively and vertically fixed on the bottom surface of the guide rail 4, liquid inlets of all the first supporting oil cylinders 7 are communicated, and all the first supporting oil cylinders 7 are connected with an external first hydraulic pressure source. The installation guide rail 4 which can be completely more closely arranged at the bottom of the roadway is met, and the first support oil cylinders 7 are replaced by points and can be better adapted to the complex ground of the roadway. Meanwhile, the bottom of the first supporting oil cylinder 7 can be provided with a positioning device 9.
Furthermore, the base 3 can also adopt a structure similar to the guide rail 4, a plurality of second supporting oil cylinders 8 are respectively and vertically fixed on the bottom surface of the base 3, and liquid inlets of all the second supporting oil cylinders 8 are communicated; and a positioning device 9 is arranged at the bottom of the second supporting oil cylinder 8. As shown in fig. 5, the positioning device 9 includes: a rock drilling device 91, in particular a pneumatic drill, with a downward pointing tip.
When the first supporting oil cylinder 7 or the second supporting oil cylinder 8 stretches out downwards in a self-adaptive mode, the pneumatic drilling device can be started, holes with different depths are drilled in the rock at the bottom of the roadway, the drilled holes can better enable the guide rail 4 or the base 3 to be positioned, and the guide rail 4 or the base 3 cannot sideslip.
Through the scheme, the specific using method comprises the following steps:
step a, installing a guide rail 4 in the center of the bottom of the roadway, wherein the guide rail 4 is kept horizontal; and the base 3 of the lead hydraulic bracket is installed at the first end of the guide rail 4, wherein the method of maintaining the guide rail 4 horizontal can be performed by using the first support cylinder 7 and the pneumatic drill to be engaged with each other. Other horizontal fixing means known at present are also possible.
And step b, ensuring that the bottom of the base 3 is tightly and horizontally placed at the bottom of the roadway.
Step c, enabling the advanced hydraulic support to support normally by extending the supporting hydraulic upright post 2; and retracting the support hydraulic upright post 2 until the advance hydraulic support is completely supported.
And d, keeping the guide rail 4 static.
And e, electrifying the first magnetic pole 5 and the second magnetic pole 6 through the first controller and the second controller to enable the base 3 to be suspended relative to the guide rail 4, controlling the second controller to enable the base 3 to slide to the second end part of the guide rail 4, canceling the control of the first controller and the second controller, and repeatedly finishing the step b and the step c. At this point, the guide rail 4 does not provide a further support condition for the base 3.
And f, keeping the base 3 static relative to the roadway.
And g, electrifying the first magnetic pole 5 and the second magnetic pole 6 through the first controller and the second controller to enable the base 3 to be suspended relative to the guide rail 4, and controlling the guide rail 4 to slide from the second end to the first end relative to the base 3 through the second controller.
And h, horizontally fixing the repeated guide rail 4 relative to the bottom of the roadway again. The horizontal fixing of the guide rail 4 can refer to the fixing manner of step a.
And c, when the guide rail 4 in the step a is horizontally fixed, the bottom of the guide rail 4 controls the self-adaptive adjustment of the first support oil cylinder 7 and the bottom of the roadway through an external hydraulic pump station.
In order to better supplement the step a, the first support oil cylinder 7 is used for self-adaptive adjustment of the roadway bottom, and the positioning device 9 is started to cut a pit with a certain depth on the rock at the roadway bottom.
In step e, the control cancellation sequence for the first controller and the second controller is: the control of the second controller is cancelled first, and then the control of the first controller is cancelled. This cancellation sequence is convenient in order to facilitate stopping the movement of the bases 3, and on the other hand aims to provide a process for freely relieving internal stresses to the bases 3. When the base 3 has no driving force for movement and only has magnetic suspension force, each base 3 can be in a free suspension state, and torque force does not exist between each base 3 and the supporting top beam 1 through the state, so that the stable support of the supporting top beam 1 at the back is facilitated. Compared with the traditional manual dragging mode, the invention reasonably adopts the magnetic suspension technology to effectively solve the technical problem. Meanwhile, the guide rail 4 slides linearly relative to the base 3 to replace the linear motion of the base 3 at the bottom of the roadway, so that the motion of the supporting top beam 1 can be kept linear more efficiently.
Claims (6)
1. The utility model provides a but hydraulic support in advance of automatic straight line walking which characterized in that: comprising a supporting cap (1);
a first extension device (11) and a second extension device (13) which are telescopic relative to the support top beam (1) are respectively arranged on two sides of the support top beam (1);
the ends of the first extension device (11) and the second extension device (13) are respectively hinged with a first side protection plate (12) and a second side protection plate (14); a plurality of pushing telescopic cylinders (15) are respectively hinged between the first extending device (11) and the first side protection plate (12) and between the second extending device (13) and the second side protection plate (14);
the bottom of the supporting top beam (1) is provided with a plurality of groups of supporting hydraulic upright columns (2), and the bottom of each group of supporting hydraulic upright columns (2) is fixed on the top of the base (3);
the bottom of the base (3) is provided with a U-shaped groove for accommodating the guide rail (4);
a plurality of groups of first magnetic poles (5) and second magnetic poles (6) which are mutually suspended after being electrified are symmetrically arranged from the two side edges of the guide rail (4) to the two inner side walls of the U-shaped groove respectively, and the first magnetic poles (5) and the second magnetic poles (6) are linearly arranged at equal intervals;
the first magnetic pole (5) is electrically connected with a first controller, and the second magnetic pole (6) is electrically connected with a second controller;
each set of first poles (5) comprises: the electromagnets are electrically connected with the first controller and sequentially overlapped;
each set of second poles (6) comprises: a plurality of electromagnets which are electrically connected with the second controller and are sequentially superposed;
after each group of the first magnetic poles (5) and each group of the second magnetic poles (6) are electrified, the polarities of the electromagnets on the same side are opposite;
the second controller further includes: a switching control circuit for controlling all the second magnetic poles (6) arranged in a straight line to sequentially change the polarity;
a plurality of first supporting oil cylinders (7) are respectively and vertically fixed on the bottom surface of the guide rail (4), and liquid inlets of all the first supporting oil cylinders (7) are communicated;
and the bottoms of the first supporting oil cylinders (7) are provided with positioning devices (9).
2. The automatic linear traveling hydraulic advance support as claimed in claim 1, wherein: and telescopic oil cylinders are respectively arranged in the first extension device (11), the second extension device (13) and the support top beam (1).
3. The automatic linear traveling hydraulic advance support as claimed in claim 1, wherein: all the first supporting oil cylinders (7) are connected with an external first hydraulic pressure source.
4. The automatic linear traveling hydraulic advance support as claimed in claim 1, wherein: a plurality of second supporting oil cylinders (8) are respectively and vertically fixed on the bottom surface of the base (3), and liquid inlets of all the second supporting oil cylinders (8) are communicated; and a positioning device (9) is arranged at the bottom of the second supporting oil cylinder (8).
5. The automatic linear traveling hydraulic advance support according to claim 1 or 4, characterized in that: the positioning device (9) comprises: a rock drilling device (91) with a downward pointing tip.
6. The automatic linear traveling hydraulic advance support as claimed in claim 5, wherein: the drilling device (91) is a pneumatic drill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911140609.8A CN110761824B (en) | 2019-11-20 | 2019-11-20 | Automatic straight-line walking advanced hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911140609.8A CN110761824B (en) | 2019-11-20 | 2019-11-20 | Automatic straight-line walking advanced hydraulic support |
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| Publication Number | Publication Date |
|---|---|
| CN110761824A CN110761824A (en) | 2020-02-07 |
| CN110761824B true CN110761824B (en) | 2020-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911140609.8A Active CN110761824B (en) | 2019-11-20 | 2019-11-20 | Automatic straight-line walking advanced hydraulic support |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1541167A (en) * | 2001-07-02 | 2004-10-27 | ˹���ɸ��� | Appts. systems and methods for levitating and moving objects |
| CN208086817U (en) * | 2018-01-18 | 2018-11-13 | 佛山科学技术学院 | A kind of remote-controllable magnetic levitation transmission system |
| CN109026110A (en) * | 2018-11-03 | 2018-12-18 | 天地科技股份有限公司 | A kind of advanced hydraulic support of foldable walking |
| CN109192022A (en) * | 2018-11-08 | 2019-01-11 | 邰奕雯 | A kind of magnetic suspended guide for the high school physics verifying law of conservation of momentum |
| CN109915192A (en) * | 2019-04-30 | 2019-06-21 | 大连宏远气动液压船舶辅机有限公司 | Coal mine underground hydraulic support frame is unloaded, is turned to regard to bit platform |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018129448A1 (en) * | 2017-01-09 | 2018-07-12 | Seneca Industries Inc. | Mining underground formations |
-
2019
- 2019-11-20 CN CN201911140609.8A patent/CN110761824B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1541167A (en) * | 2001-07-02 | 2004-10-27 | ˹���ɸ��� | Appts. systems and methods for levitating and moving objects |
| CN208086817U (en) * | 2018-01-18 | 2018-11-13 | 佛山科学技术学院 | A kind of remote-controllable magnetic levitation transmission system |
| CN109026110A (en) * | 2018-11-03 | 2018-12-18 | 天地科技股份有限公司 | A kind of advanced hydraulic support of foldable walking |
| CN109192022A (en) * | 2018-11-08 | 2019-01-11 | 邰奕雯 | A kind of magnetic suspended guide for the high school physics verifying law of conservation of momentum |
| CN109915192A (en) * | 2019-04-30 | 2019-06-21 | 大连宏远气动液压船舶辅机有限公司 | Coal mine underground hydraulic support frame is unloaded, is turned to regard to bit platform |
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| Publication number | Publication date |
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| CN110761824A (en) | 2020-02-07 |
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