CN101694162B - Hydraulic support and bottom lifting device thereof - Google Patents
Hydraulic support and bottom lifting device thereof Download PDFInfo
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- CN101694162B CN101694162B CN2009102070510A CN200910207051A CN101694162B CN 101694162 B CN101694162 B CN 101694162B CN 2009102070510 A CN2009102070510 A CN 2009102070510A CN 200910207051 A CN200910207051 A CN 200910207051A CN 101694162 B CN101694162 B CN 101694162B
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- swinging block
- base
- lifting device
- bottom lifting
- hydraulic support
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Abstract
The invention discloses a bottom lifting device used for a hydraulic support. The hydraulic support comprises a base (9) formed by a left base (91) and a right base (92); the bottom lifting device comprises a power part, a left swinging block (23) and a right swinging block (24); the middle part of the left swinging block (23) is pivoted with the left base (91) by a hinge pin (26), the middle part of the right swinging block (24) is pivoted with the right base (92) by the hinge pin (26), the two hinge pins (26) are both parallel to the base (9) and are parallelly arranged on the whole, and the power part acts on the left end part of the left swinging block (23) and the right end part of the right swinging block (24), so that the left swinging block (23) and the right swinging block (24) relatively rotate surrounding the hinge pins (26) respectively. The invention also discloses a hydraulic support comprising the bottom lifting device. On the basis of realizing enough lifting height and lifting load, the hydraulic support and the bottom lifting device thereof occupy smaller height space and meet the bottom lifting requirement of hydraulic supports in thin seams.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly relate to a kind of bottom lifting device that is used for hydraulic support.In addition, the invention still further relates to a kind of hydraulic support that comprises above-mentioned bottom lifting device.
Background technology
China is the main producing coal country in the world, and colliery sum surpasses other All Countries colliery number sums of the whole world, and the reserves of girdle account for coal gross reserves 17.5%.Along with the raising of country to the requirement of the rate of extraction of coal, more and more to the exploitation of girdle, simultaneously, comprehensive mechanical coal mining also becomes the main method that girdle is exploited.
Hydraulic support is the support apparatus of comprehensive mechanical coal mining, and its major function is a supporting stope top board, safeguards the working space of equipment such as coal-winning machine and drag conveyor, and fells and transports equipment in company with work plane and move forward.The front end of the passing framework of hydraulic support for low coal seam is general to be connected the realization performing comprehensive coal mining with equipment such as drag conveyor.
Along with the raising of user for the requirement of the supporting resistance of hydraulic support, hydraulic support also constantly increases the pressure on ground, and when the base front end of hydraulic support surpassed the ability to bear on ground to the pressure on ground, the base front end sank and is inevitable.After the base front end sink,, just can't continue to move forward hydraulic support so operated by rotary motion bottom lifting device on the hydraulic support along with what exploit if do not take measures.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of typical bottom lifting device in the prior art.
The Connection Block 13 of bottom lifting device is articulated in otic placode 12 on the base 11 by bearing pin 17, and the piston rod 16 of lifting end hydraulic cylinder is fixed in the crossbeam of Connection Block 13 by bolt 14.When needs are lifted the end, lift end hydraulic cylinder elongation, the cylinder bottom 15 of lifting end hydraulic cylinder acts on the push rod 18 of hydraulic support, thereby base 11 is lifted.
Because the hydraulic cylinder of bottom lifting device of the prior art all is vertically arranged, and the lifting of bottom lifting device distance is by the stroke decision of hydraulic cylinder, therefore, obtain enough lifting distances, hydraulic cylinder must have enough length, but for the hydraulic support that is used to exploit girdle, height space is very limited, and traditional bottom lifting device can not satisfy the needs of lifting the end; Yet because the height of the hydraulic support of girdle is lower, the inclination angle of its column is bigger, has further increased the weight of the problem that the base front end sink, and presses for a kind ofly can satisfy the bottom lifting device that hydraulic support for low coal seam is lifted end needs.
Therefore, how to make bottom lifting device realizing enough raising heights and lifting on the basis of load, take less height space, that satisfies hydraulic support for low coal seam lifts end needs, is the present technical issues that need to address of those skilled in the art.
Summary of the invention
The purpose of this invention is to provide a kind of bottom lifting device that is used for hydraulic support, this bottom lifting device can take less height space realizing enough raising heights and lifting on the basis of load, and that satisfies hydraulic support for low coal seam lifts end needs.Another object of the present invention provides a kind of hydraulic support that comprises above-mentioned bottom lifting device.
For solving the problems of the technologies described above, the invention provides a kind of bottom lifting device, be used for hydraulic support, described hydraulic support comprises the base that is made of left base and right base, described bottom lifting device comprises power part, left side swinging block and right swinging block, the middle part of described left swinging block articulates by bearing pin and described left base, the middle part of described right swinging block articulates by bearing pin and described right base, two described bearing pins all are parallel to described base and the two be arranged in parallel substantially, described power part acts on the left part of described left swinging block and the right part of described right swinging block, so that described left swinging block and described right swinging block rotate around described bearing pin is relative respectively.
Preferably, described power part is horizontally disposed with substantially.
Preferably, described power part is a hydraulic cylinder, and an end of described hydraulic cylinder is connected with the left part of described left swinging block, and its other end is connected with the right part of described right swinging block.
Preferably, the left part of described left swinging block and the right part of described right swinging block all offer groove, and the both ends of described hydraulic cylinder all are arranged in the described groove.
Preferably, described hydraulic cylinder is a double acting hydraulic cylinder.
Preferably, the structure of described left swinging block and described right swinging block is identical substantially, and the two center line about the vertical extension of described hydraulic support is symmetrical set substantially.
Preferably, be provided with the ear seat on described left base and the described right base, the middle part of described left swinging block all is connected with described ear seat by described bearing pin with the middle part of described right swinging block.
For addressing the above problem, the present invention also provides a kind of hydraulic support, comprises above-mentioned each described bottom lifting device.
The bottom lifting device that is used for hydraulic support provided by the present invention comprises left swinging block and right swinging block, and the middle part of left swinging block articulates by the left base of bearing pin and hydraulic support, and the middle part of right swinging block articulates by the right base of bearing pin and hydraulic support; The base of bearing pin and hydraulic support be arranged in parallel, and the axis of two bearing pins is parallel substantially.In the time the base of hydraulic support need being lifted, the left part that power part acts on left swinging block makes left swinging block rotate around bearing pin, and then makes its right part act on push rod between left base and right base; Simultaneously, the right part that power part acts on right swinging block makes right swinging block rotate around bearing pin, and then makes the left part of right swinging block act on push rod between left base and right base, thereby left base and right base are lifted; When not needing base with hydraulic support to lift, power part acts in the opposite direction, and base is fallen.As can be seen, bottom lifting device provided by the present invention is owing to cancelled vertically arranged hydraulic cylinder, make raising height not be subjected to the influence of the stroke of vertically arranged hydraulic cylinder, not only realize having enough raising heights and lifted load, and, dwindled the height space that takies, that has satisfied hydraulic support for low coal seam lifts end needs.
In a kind of preferred implementation, power part is a hydraulic cylinder, and an end of hydraulic cylinder is connected with the left part of left swinging block, and its other end is connected with the right part of right swinging block.When not needing base lifted, the hydraulic cylinder elongation, its two ends drive left swinging block respectively and right swinging block rotates around bearing pin, and the right part of left swinging block and the left part of right swinging block are lifted, and base is in the state of not being lifted; When needs lift base, hydraulic cylinder shrinks, its both ends drive the rotation of left swinging block and right swinging block respectively, make the left part together support of the right part of left swinging block and right swinging block and act on left base and right base between push rod, thereby left base and right base are lifted.Hydraulic cylinder simple in structure, easy to operate, simultaneously, because the hydraulic cylinder horizontally set, its elongation and shorten and can not take too many height space has reduced the needs of bottom lifting device for height, and that has satisfied hydraulic support for low coal seam lifts end requirement.
The beneficial effect of hydraulic support provided by the present invention is identical with the beneficial effect of above-mentioned bottom lifting device, does not repeat them here.
Description of drawings
Fig. 1 is the structural representation of a kind of typical bottom lifting device in the prior art;
Fig. 2 looks schematic diagram for bottom lifting device provided by the present invention is in the master who lifts a kind of specific embodiment of end state;
Fig. 3 looks schematic diagram for the master that bottom lifting device provided by the present invention is in a kind of specific embodiment of reset mode;
Fig. 4 is the schematic top plan view of a kind of specific embodiment of bottom lifting device provided by the present invention;
Fig. 5 looks schematic diagram for the master who is installed on a kind of specific embodiment of bottom lifting device of hydraulic support provided by the present invention;
Fig. 6 is the structural representation of a kind of specific embodiment of hydraulic support provided by the present invention.
The specific embodiment
Core of the present invention provides a kind of bottom lifting device that is used for hydraulic support, and this bottom lifting device can take less height space realizing enough raising heights and lifting on the basis of load, and that satisfies hydraulic support for low coal seam lifts end needs.Another core of the present invention provides a kind of hydraulic support that comprises above-mentioned bottom lifting device.
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 2 to Fig. 5, Fig. 2 looks schematic diagram for bottom lifting device provided by the present invention is in the master who lifts a kind of specific embodiment of end state; Fig. 3 looks schematic diagram for the master that bottom lifting device provided by the present invention is in a kind of specific embodiment of reset mode; Fig. 4 is the schematic top plan view of a kind of specific embodiment of bottom lifting device provided by the present invention; Fig. 5 looks schematic diagram for the master who is installed on a kind of specific embodiment of bottom lifting device of hydraulic support provided by the present invention.
In a kind of specific embodiment, the bottom lifting device that is used for hydraulic support provided by the present invention, comprise power part, left swinging block 23 and right swinging block 24, the middle part of left side swinging block 23 articulates by bearing pin 26 and left base 91, the middle part of right swinging block 24 articulates by bearing pin 26 and right base 92, and it is parallel substantially that bearing pin 26 is parallel to the axis of base 9 (being shown among Fig. 6) and two bearing pins 26.Be respectively left side and right side when bottom lifting device placed according to the position shown in Fig. 2 about described herein; The fore-and-aft direction of hydraulic support is the horizontal direction vertical with described left and right directions, and an end that wherein connects drag conveyor is a front end.
As shown in Figure 2, when need be when lifting with the base 9 (being shown among Fig. 6) of hydraulic support, the left part that power part acts on left swinging block 23 makes left swinging block 23 around bearing pin 26 rotations, and then makes its right part act on push rod 8 (being shown among Fig. 6) between left base 91 and right base 92; Simultaneously, the right part that power part acts on right swinging block 24 makes right swinging block 24 around bearing pin 26 rotations, its direction of rotation is relative with the direction of rotation of left swinging block 23, and then the left part that makes right swinging block 24 acts on the push rod 8 between left base 91 and right base 92, and left base 91 and right base 92 are lifted in left swinging block 23 and 24 actings in conjunction of right swinging block; As shown in Figure 3, when not needing base 9 with hydraulic support to lift, power part acts in the opposite direction, and base 9 is fallen.Relative rotation described herein is meant that the right part of the left part of left swinging block 23 and right swinging block 24 all moves upward or all moves downward, and can lift left base 91 and right base 92 simultaneously to guarantee left swinging block 23 and right swinging block 24.
As can be seen, bottom lifting device provided by the present invention has not only been realized having enough raising heights and has been lifted load, simultaneously, owing to cancelled vertically arranged hydraulic cylinder, raising height no longer is subjected to the influence of the stroke of vertically arranged hydraulic cylinder, dwindled the height space that takies, that has satisfied hydraulic support for low coal seam lifts end needs.
Particularly, power part can be horizontally disposed with.Like this, can reduce the shared height space of bottom lifting device further, and then reduce the height of hydraulic support further, enlarge the scope of application of hydraulic support.
In a kind of specific embodiment, power part can be hydraulic cylinder 25, and an end of hydraulic cylinder 25 is connected with the left part of left swinging block 23, and its other end is connected with the right part of right swinging block 24.
When not needing base 9 lifted, hydraulic cylinder 25 elongations, its two ends drive left swinging block 23 and right swinging block 24 respectively around bearing pin 26 rotations, and the right part of left swinging block 23 and the left part of right swinging block 24 are lifted, and base 9 promptly is in the state that is not lifted; When needs lift base 9, hydraulic cylinder 25 shrinks, its both ends drive left swinging block 23 and 24 rotations of right swinging block respectively, make the left part together support of the right part of left swinging block 23 and right swinging block 24 and act on parts between left base 91 and the right base 92, thereby left base 91 and right base 92 are lifted.
Certainly, realize that the power set of above-mentioned functions are not limited to above-described hydraulic cylinder 25, cylinder or the leading screw or the chain that are provided with in pairs and can act on round about all are fine.On the other hand, a hydraulic cylinder 25 can also be set respectively in the left and right sides, the two ends of the hydraulic cylinder 25 in left side are connected with left base 91 with the left part of left swinging block 23 respectively, and the two ends of the hydraulic cylinder 25 on right side are connected with right base 92 with the right part of right swinging block 24 respectively.
For convenience left swinging block 23 and right swinging block 24 and hydraulic cylinder 25 is connected, can also all offer the groove (not shown) in the left part of left swinging block 23 and the right part of right swinging block 24, and all be arranged at the both ends of hydraulic cylinder 25 in the groove, articulate with the left part of left swinging block 23 and the right part of right swinging block 24 respectively by the both ends of bearing pin 26 then hydraulic cylinder 25, rotate around the bearing pin 26 that is connected with base 9 with right swinging block 24 along with elongating or shortening of hydraulic cylinder 25 makes left swinging block 23 with assurance, and its Plane of rotation is the left and right plane perpendicular to horizontal plane.
The setting of groove has not only made things convenient for the connection of hydraulic cylinder 25, and connecting portion is arranged at the inside of left swinging block 23 or right swinging block 24, further reduced the space of the shared vertical direction of hydraulic cylinder 25, thereby, further enlarge the working range that hydraulic support allowed, enlarged the applicability of hydraulic support.Certainly, the degree of depth of groove can be provided with as required, in order further to reduce the height space that bottom lifting device takies, can make groove have proper depth and width, and hydraulic cylinder 25 is sunk in the groove, reduces the height space that hydraulic cylinder 25 takies.
Particularly, hydraulic cylinder 25 can be double acting hydraulic cylinder.Double acting hydraulic cylinder can be realized the shortening or the elongation of double acting hydraulic cylinder easily by the circulation of the hydraulic oil in its rod chamber or the rodless cavity, and then realizes lifting or resetting of hydraulic support foundation 9.Certainly, single-action hydraulic cylinder also is fine.
Lift end effect preferably for left swinging block 23 and right swinging block 24 are had, can make the structure of left swinging block 23 and right swinging block 24 substantially identical, and make the two the position is set about the center line of the left and right directions of hydraulic support symmetry substantially.Like this, when power part is had an effect to left swinging block 23 and right swinging block 24 simultaneously, the right part of left side swinging block 23 and the left part of right swinging block 24 can act on the push rod 8 between left base 91 and the right base 92 simultaneously, thereby base 9 is lifted, make the active force of left swinging block 23 and right swinging block 24 to play a role fully, save the active force of power part, reduced use cost.
In order to further facilitate being connected of base 9 and left swinging block 23 or right swinging block 24, can also on left base 91 and right base 92, ear seat 911 be set all, the middle part of the middle part of left swinging block 23 and right swinging block 24 all is connected with ear seat 911 by bearing pin 26.Particularly, ear seat 911 can be welded on the base 9 by welding manner, also can be fixed on the base 9 by links such as bolts.
Except above-mentioned bottom lifting device, the present invention also provides a kind of hydraulic support that comprises above-mentioned bottom lifting device.
Please refer to Fig. 6, Fig. 6 is the structural representation of a kind of specific embodiment of hydraulic support provided by the present invention.
Hydraulic support provided by the present invention comprises bottom lifting device 2, back timber 3, column 4, caving shield 6, connecting rod 7, push unit and base 9.In the course of work, the front end of the push rod 8 of push unit connects drag conveyor, and when the needs hydraulic support moved forward, bottom lifting device 2 lifted the base 9 of hydraulic support, and the hydraulic cylinder withdrawal or the elongation of push unit drive hydraulic support and realize moving forward.
More than hydraulic support provided by the present invention and bottom lifting 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 (8)
1. bottom lifting device, be used for hydraulic support, described hydraulic support comprises the base (9) that is made of left base (91) and right base (92), it is characterized in that, described bottom lifting device comprises power part, left side swinging block (23) and right swinging block (24), the middle part of described left swinging block (23) articulates by bearing pin (26) and described left base (91), the middle part of described right swinging block (24) articulates by bearing pin (26) and described right base (92), two described bearing pins (26) all are parallel to described base (9) and the two be arranged in parallel substantially, described power part acts on the left part of described left swinging block (23) and the right part of described right swinging block (24), so that described left swinging block (23) and described right swinging block (24) are respectively around the relative rotation of described bearing pin (26).
2. bottom lifting device according to claim 1 is characterized in that described power part is horizontally disposed with substantially.
3. bottom lifting device according to claim 2 is characterized in that, described power part is hydraulic cylinder (25), and an end of described hydraulic cylinder (25) is connected with the left part of described left swinging block (23), and its other end is connected with the right part of described right swinging block (24).
4. bottom lifting device according to claim 3 is characterized in that, the right part of the left part of described left swinging block (23) and described right swinging block (24) all offers groove, and the both ends of described hydraulic cylinder (25) all are arranged in the described groove.
5. bottom lifting device according to claim 3 is characterized in that, described hydraulic cylinder (25) is a double acting hydraulic cylinder.
6. according to each described bottom lifting device of claim 1 to 5, it is characterized in that the structure of described left swinging block (23) and described right swinging block (24) is identical substantially, and the two center line about the vertical extension of described hydraulic support is symmetrical set substantially.
7. according to each described bottom lifting device of claim 1 to 5, it is characterized in that, be provided with ear seat (911) on described left base (91) and the described right base (92), the middle part of the middle part of described left swinging block (23) and described right swinging block (24) all is connected with described ear seat (911) by described bearing pin (26).
8. a hydraulic support is characterized in that, comprises as each described bottom lifting device of claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102070510A CN101694162B (en) | 2009-10-27 | 2009-10-27 | Hydraulic support and bottom lifting device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102070510A CN101694162B (en) | 2009-10-27 | 2009-10-27 | Hydraulic support and bottom lifting device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101694162A CN101694162A (en) | 2010-04-14 |
| CN101694162B true CN101694162B (en) | 2011-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102070510A Expired - Fee Related CN101694162B (en) | 2009-10-27 | 2009-10-27 | Hydraulic support and bottom lifting device thereof |
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| Country | Link |
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| CN (1) | CN101694162B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536286A (en) * | 2010-12-09 | 2012-07-04 | 郑州四维机电设备制造有限公司 | Shield-type hydraulic support for thin coal seam |
| CN102748054B (en) * | 2012-07-03 | 2014-08-13 | 三一重型装备有限公司 | Hydraulic bracket pushing mechanism and hydraulic bracket |
| CN104564110A (en) * | 2014-11-14 | 2015-04-29 | 三一重型装备有限公司 | Hydraulic bracket and bottom lifting device thereof |
| CN109519203A (en) * | 2018-12-24 | 2019-03-26 | 中煤北京煤矿机械有限责任公司 | Laterally scissor bottom raising mechanism |
| CN111441811A (en) * | 2020-04-16 | 2020-07-24 | 三一重型装备有限公司 | Bottom lifting frame and hydraulic support |
-
2009
- 2009-10-27 CN CN2009102070510A patent/CN101694162B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101694162A (en) | 2010-04-14 |
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