CN201915983U - Hydraulic support - Google Patents

Hydraulic support Download PDF

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Publication number
CN201915983U
CN201915983U CN2010202982736U CN201020298273U CN201915983U CN 201915983 U CN201915983 U CN 201915983U CN 2010202982736 U CN2010202982736 U CN 2010202982736U CN 201020298273 U CN201020298273 U CN 201020298273U CN 201915983 U CN201915983 U CN 201915983U
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CN
China
Prior art keywords
jack
hydraulic support
base
support
cylinder sleeve
Prior art date
Application number
CN2010202982736U
Other languages
Chinese (zh)
Inventor
李纪青
王耀辉
杨锡岭
范映冲
Original Assignee
天地科技股份有限公司
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Publication date
Application filed by 天地科技股份有限公司 filed Critical 天地科技股份有限公司
Priority to CN2010202982736U priority Critical patent/CN201915983U/en
Application granted granted Critical
Publication of CN201915983U publication Critical patent/CN201915983U/en

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Abstract

The utility model discloses a hydraulic support for the longwall face in steeply inclined thin and thick coal seams, which relates to coal mine support equipments.The hydraulic support comprises two upright columns, a passing mechanism, four linkage mechanisms, a top beam, a base, a shield beam, a bottom-adjusting beam, a slide rail, a side guard board and an electro-hydraulic control system.The hydraulic support is especially suitable for being matched with a planning transport machine to be used.The passing mechanism comprises a passing jack and two swing jacks.The comprehensive mechanized mining of the longwall face in steeply inclined thin and thick coal seams is realized when the hydraulic support is matched with a planning transport machine to be used.By utilizing the hydraulic support, the production efficiency is improved and the labor intensity is reduced. The hydraulic support is beneficial to the safe production of coal mines, which is especially suitable for slowly inclined coal seams.

Description

Hydraulic support
Technical field
The utility model relates to a kind of seam mining support apparatus, especially a kind ofly is used for the hydraulic support that steeply inclined thin and medium-thickness seam move towards the coal wall.
Background technology
At present, the segmentation mining coal-mining method that China adopts in severe inclined thick coal seam through practice for many years, has become a kind of exploitation method with " three height " superiority.Move towards to realize on the coal wall also not success of fully-mechanized mining at steeply inclined thin and medium-thickness seam.One of wherein the most key reason be exactly also successfully do not develop can with the supporting use of mining equipment, and can surpass the hydraulic support of safety support in 50 ° the half-edge coal seam at the inclination angle.
Summary of the invention
The utility model provides a kind of inclination angle that can be applied to surpass the hydraulic support that 50 ° steeply inclined thin and medium-thickness seam carry out supporting, this hydraulic support what is more important can with the supporting use of a kind of digging and transport machine mining equipment, thereby for realizing that steeply inclined thin and medium-thickness seam fully-mechanized mining provide condition.The utility model is a kind of two column protected type high-dipping hydraulic support, and the difference by the supporting position is divided into basic support and transition bracket.Wherein basic support comprises two root posts, thrust gear, quadric chain, back timber, base, caving shield, side guard board, end accent beam and waste rock board etc.
Technical data of the present utility model can be selected for use as next group:
Supporting structure height 700-1700mm
Support width 1370-1620mm
Carriage center is apart from 1500mm
Setting load 1978kN (P=31.5MPa)
Working resistance of support 2400kN (P=36.2MPa)
Supporting intensity 0.36-0.50MPa
Floor pressure ratio Air holder 3.5MPa
Unit advance 600mm
Pumping plant pressure 31.5MPa
Mode of operation is neighboring frame-operated
Weight 8t
Hydraulic support and digging and transport machine are used, and thrust gear is its crucial ingredient.The thrust gear front end is connected with digging and transport machine beam, and the rear end is installed on the base of hydraulic support.Thrust gear waves jack by a passing jack and two and forms.
Pass jack and adopt inverted structure; whole jack adds the cylinder sleeve of a wall thickness 15mm; jack piston rod is against the cylinder sleeve bottom; in cylinder sleeve, stretch out; avoid the piston rod bearing radial force, produce flexural deformation, and because the extending area change; can protect seal not to be damaged, thereby improve the bending resistance of jack.Jack cylinder is stretched out from cylinder sleeve.An end is equipped with the steel bushing of a wide 60mm between jack cylinder and cylinder sleeve, and the other end is equipped with the copper sheathing of wide 70mm, when the jack cylinder leading portion is subjected to radial load, bears the steel bushing and the copper sheathing of active force, can not be out of shape, and damages.In addition, overlap length reaches 400mm between jack cylinder and the cylinder sleeve, has increased the bending resistance of this jack.At work, when piston rod stretches out, push the digging and transport machine to rib, the cutting coal body; When piston rod is regained, preceding moving hydraulic support.Passing the jack technical data can select for use with next group:
Jack cylinder internal diameter 110mm
Piston rod footpath 70mm
Pumping plant pressure 31.5MPa
Pass jack tractional force 284kN
Pass jack and move booster 169kN
Cylinder sleeve wall thickness 15mm
Jack steel bushing width 60mm
Jack copper sheathing width 70mm
Two are waved jack and pass that jack is non-parallel to be connected, and are connected with the passing jack with 5 °~10 ° acute angles respectively, form a splay configuration structure, with the downslide of controller beam.Hydraulic circuit is set up the reversible lock structure, no matter is in static state or dynamic, waves jack and keeps chucking power to passing jack all the time, controls its direction, stops it to offset downward.
For using with digging and transport machine better fit, make the digging and transport machine reach higher operating efficiency, the utility model has adopted electrohydraulic control technology.The passing jack of each hydraulic support all equipped stroke sensor, wave jack has all equipped obliquity sensor, reaches the push-in stroke and the oscillating quantity of each hydraulic support thrust gear of real-time control, thus the motion state of control digging and transport machine beam.
Guarantee safe production, improve the efficient of digging and transport machine, this hydraulic support partly moves the employing electrichydraulic control.Passing jack at each hydraulic support has all been equipped stroke sensor, waves jack and has all equipped obliquity sensor.
For avoiding coal cinder or spoil to smash, increased a telescopic rubber bush at the jack overcoat, can avoid passing jack and be damaged.
The effect of waving jack is that the digging and transport machine is lifted and puts down.Its stroke and thrust are determined by the weight of mine height and digging and transport machine machine beam respectively.
The hydraulic support back timber is equipped with a waste rock board, by jack control, and can be according to the flip angle of the distance adjustment waste rock board between back timber and the base.But the waste rock board of a pull is installed also between base and the passing jack.When the hydraulic support bearing height is low, only the waste rock board on the base is dug, prevent that falling object from entering in the support; When the stent support height is higher, the waste rock board on the back timber is turned down, form fire dam one, coal breakage passage and hydraulic support space are separated.Waste rock board tilts towards rib, will descend the junk retaining to rib, forms stepped whereabouts, therefore can weaken the impact force of junk down.
Before pedestrian space, waste rock board back, on the hydraulic support back timber, arrange the semicircle hook of a row, hang the steel chain net.When support raise, it was elongated thereupon, and the inner retaining of hydraulic support is tight.Simultaneously, the below and the hydraulic support foundation of steel chain net are fixed, and enter hydraulic support inside to guarantee effectively to shelter from falling object.
The hydraulic support minimum altitude generally is not less than 700mm, and the angle of slope of column is not less than 45 °, and the column angle of slope is taken as 45 °, can guarantee the supporting efficient of hydraulic support.Hydraulic support adopts two flexible two column basic structure forms, maximum height generally is no more than 1700mm, when maximum height is taken as 1700mm, do not have under the flexible state at the post of living, it is the most suitable that strut length is got 664mm, wherein, the dead shell of column length of first-stage cylinder is got 197mm, the shell of column length of living is got 468mm, and the dead shell of column length of secondary cylinder is got 319mm, and the shell of column length of living is got 345mm.
In half-edge coal seam, under the prerequisite of guaranteeing hydraulic support stability, should shorten the length of back timber and base as far as possible, reduce the weight of support, but also should guarantee enough pedestrian spaces simultaneously.In the utility model, hydraulic support has been taked following measure:
To pass jack and be installed in the base front end.This measure will be passed jack and wave jack and directly will be contained in base inside, and the pedestrian space is placed on passes on the jack.Base length can be taken as 1772mm, and back timber length can be taken as 1781mm, and back timber and base length are shorter, and suffered moment of torsion is less, can guarantee the bulk strength that hydraulic support is enough; The pedestrian space is trapezoidal, and minimum place can be remarkable.
Except that such scheme, can also adopt following scheme:
To pass jack and be installed in the base upper front end.In this scheme, the pedestrian space is placed on passes after the jack, and base length can be taken as 2857mm, and back timber length can be taken as 2788mm.Adopt this scheme, the pedestrian space is bigger, and the hydraulic support bulk strength descends, but still in safe range.
When half-edge coal seam adopts broadwall, because the normal direction of gravity and tangential component increase with the inclination angle and change, make tangential component increase and normal component of force reduces, top, floor load that the face timbering system is born diminish, and cause and outer year of the support system unstability strengthen, working surface hydraulic support is sliding, fall and frame between squeeze, sting the phenomenon aggravation.So, moving towards the coal wall in high-dipping, the emphasis of CONTROL OF STRATA MOVEMENT is not only that top, base plate are lived in supporting, the more important thing is the stability of strengthening support system.Therefore the utility model has increased end accent beam, railroad especially on hydraulic support foundation.The end, transfer beam to be positioned at the downside postmedian of base, adopts rectangular structure, by transferring beam hinged in two jack and the end.Jack can stretch out parallel moving simultaneously, also can pass performance separately and transfer the frame effect.Slide rail is positioned at the upside of base.Generally, the end, transfer beam to pedal work on the slide rail of next hydraulic support, stops it to glide, to guarantee the stability of hydraulic support.When moving frame, the end, transfer beam to slide on the slide rail of next support, with the back timber side guard board with pass the anti-skid structure that jack constitutes a solid, can stop that hydraulic support is toppled over, the downslide phenomenon when mobile.After moving frame,, match, make whole hydraulic support be inclined to direction and rotate, guaranteed that hydraulic support is in capwise direction performance supporting role along work plane with the side guard board of hydraulic support back timber and caving shield by stretching of jack on the end accent beam.
Be taken as 1620mm at the hydraulic support Breadth Maximum, the base width is taken as under the situation of 1370mm, the end, transfer beam and each parameter of slide rail can be taken as with next group:
The cylinder diameter 100mm of beam jack is transferred at the end,
The stroke 250mm of jack
Cantilever thickness 85mm is transferred at the end
Slide rail thickness 85mm
Move towards in the longwall full-mechanized mining technique work plane in high-dipping, one on support leans on one, arranged superposed, the side guard board of adjacent hydraulic support is close to mutually, with stop hydraulic support topple over, crooked, keep the stability of hydraulic support, and adjust mutual position and the gap of hydraulic support.When moving frame, the jack of side guard board unclamps slightly, and the side guard board of top hydraulic support is the slideway reach with the side guard board of following hydraulic support, topples over phenomenon thereby prevent to produce when hydraulic support from moving.For possessing this function, 5 thruster jack, 3 of back timbers, 2 of caving shields are installed at the support downside.The cylinder diameter of thruster jack can be taken as 63mm, and the piston rod footpath can be taken as 45mm, and thrust can be taken as 98kN, and receipts power can be taken as 48kN.
The utility model is the use that matches with the digging and transport machine, is used to realize the half-edge coal seam fully-mechanized mining.At digging and transport machine upper and lower end motor, gearbox and a drive sprocket are arranged respectively, be assemblied in digging and transport machine machine beam goaf one side, digging and transport machine is herein widened, this part device adds that machine beam, planer head and plane chain weight obviously increase simultaneously.Therefore, also designed the use that matches with the digging and transport machine of special transition bracket.
The file leader moves the frame operation and requires to move past earlier second support that crosses the support top under the work plane, and then relative second support of transition bracket bottom nearly half support of length that is exposed to the goaf piles with spoil on it, and hydraulic support can't bear and unstability.Therefore with the reach of transition bracket column, be arranged in and pass the jacking bracket both sides, support width is increased to 1640mm, the pedestrian space is arranged between column and the caving shield.Like this support entire length is shortened, make its be exposed to the goaf contraction in length near half.In addition, comprise motor, reduction box and driving head at the inner termination beam for lifting, thrust gear adopts two passing jack, and the single jack that waves is arranged in two structural shapes between the passing jack.
Description of drawings
Fig. 1 is a front view of the present utility model;
Fig. 2 is a left view of the present utility model;
Fig. 3 is the vertical view that the utility model is removed the back timber part;
Fig. 4 is a sectional view of passing jack;
Fig. 5 is that Fig. 4 A is to view;
Fig. 6 is that Fig. 4 B is to view;
Fig. 7 is that Fig. 4 C is to view;
Fig. 8 is the sectional view that waves jack;
Fig. 9 is that Fig. 8 A is to view.
Wherein, 1 waste rock board, 2 extensible canopies, 3 steel chain nets, 4 pairs of telescopic props, 5 caving shields, 6 retaining cash jack, 7 thrust gears, 8 bases, 9 hydraulic control valve groups, 10 quadric chains, 11 back timbers, 12 side guard boards, beam jack, 14 slide rails, 15 steel bushings, 16 piston rods, 17 cylinder sleeves, 18 copper sheathings were transferred in 13 ends
The specific embodiment
As shown in Figures 1 and 2, the utility model agent structure is made of two two telescopic props 4, quadric chain 10, back timber 11, base 8, caving shield 5, extensible canopy 2 and electrohydraulic control systems.
The utility model back timber 11 also is equipped with waste rock board 1, and retaining cash jack 6 is installed between base 8 and thrust gear 7.Hydraulic control valve group 9 is installed on two telescopic props 4, by operation hydraulic control valve group 9, can realize the utility model automation control.For preventing that effectively falling object from entering the utility model inside, arranged the semicircle hook of a row on back timber 11 positions before waste rock board 1 back and pedestrian space, hang a steel chain net 3, steel chain net 3 belows are fixed on the base 8.Side guard board 12 is installed on the back timber 11.
As shown in Figure 3, base 8 downside postmedians also are equipped with low-key beam jack 13, and base 8 upsides are equipped with slide rail 14.Can strengthen stability of the present utility model by low-key beam jack 13 and slide rail 14.
For using with the combination of digging and transport machine, the hydraulic support foundation front end has been installed thrust gear 7.Thrust gear 7 waves jack by a passing jack and two to be formed, and passes jack and waves the jack clamping by two.Accompanying drawing 4 is sectional views of passing jack.Pass jack and adopt inverted structure; whole jack adds the cylinder sleeve 17 of a wall thickness 15mm; jack piston rod 16 is against cylinder sleeve 17 bottoms; in cylinder sleeve 17, stretch out; avoid piston rod 16 bearing radial forces, produce flexural deformation, and because the extending area change; can protect seal not to be damaged, thereby improve the bending resistance of jack.An end is equipped with the steel bushing 15 of a wide 60mm between jack cylinder and cylinder sleeve 17, and the other end is equipped with the copper sheathing 18 of wide 70mm, when the jack cylinder leading portion is subjected to radial load, bears the steel bushing 15 and the copper sheathing 16 of active force, can not be out of shape, and damages.

Claims (11)

1. a hydraulic support comprises two root posts, thrust gear, quadric chain, back timber, base, caving shield, side guard board, it is characterized in that, thrust gear comprises that a passing jack and two wave jack.
2. hydraulic support according to claim 1 is characterized in that, passes jack and adopts inverted structure.
3. hydraulic support according to claim 1 is characterized in that, passes the jack skin and has added a cylinder sleeve, and jack piston rod is against the cylinder sleeve bottom, stretches out in cylinder sleeve.
4. hydraulic support according to claim 1 is characterized in that jack cylinder is stretched out from cylinder sleeve, an end is equipped with a steel bushing between jack cylinder and cylinder sleeve, and the other end is equipped with a copper sheathing.
5. according to claim 1,2, the described hydraulic support of 3 or 4 arbitrary claims, it is characterized in that, a waste rock board is installed at the back timber front end, by jack control, can be according to the flip angle of the distance adjustment waste rock board between back timber and the base.
6. according to claim 1,2, the described hydraulic support of 3 or 4 arbitrary claims, it is characterized in that, but at base with pass the waste rock board that a pull is installed between the jack.
7. according to claim 1,2, the described hydraulic support of 3 or 4 arbitrary claims, it is characterized in that column is two stretching structures.
8. according to claim 1,2, the described hydraulic support of 3 or 4 arbitrary claims, it is characterized in that, end accent beam and railroad are installed on the base.
9. hydraulic support according to claim 8 is characterized in that, end accent beam is positioned at the downside postmedian of base, by transferring beam hinged in two jack and the end.
10. hydraulic support according to claim 9 is characterized in that slide rail is positioned at the upside of base, transfers beam to pedal on the slide rail of next hydraulic support at the bottom of during use.
11., it is characterized in that: pass jack and equipped displacement transducer, wave jack and equipped obliquity sensor according to claim 1,2, the described hydraulic support of 3 or 4 arbitrary claims.
CN2010202982736U 2010-08-20 2010-08-20 Hydraulic support CN201915983U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202982736U CN201915983U (en) 2010-08-20 2010-08-20 Hydraulic support

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Application Number Priority Date Filing Date Title
CN2010202982736U CN201915983U (en) 2010-08-20 2010-08-20 Hydraulic support

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Publication Number Publication Date
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103256048A (en) * 2013-05-30 2013-08-21 天地科技股份有限公司 Mining method of coal drilling unit for comprehensive mechanized coal mining
CN103410517A (en) * 2013-07-05 2013-11-27 中国煤炭科工集团太原研究院 Fast driving stepping self-moving rubber belt conveyor tail supporting device
CN103993896A (en) * 2014-05-16 2014-08-20 中煤北京煤矿机械有限责任公司 Special bottom adjusting device for thin coal seam support
CN110566205A (en) * 2019-09-18 2019-12-13 新疆矿源重工科技有限公司 Mining method for steeply inclined coal seam
CN110656963A (en) * 2019-09-18 2020-01-07 新疆矿源重工科技有限公司 N-shaped fully mechanized mining support for steeply inclined coal seam
CN110671141A (en) * 2019-10-28 2020-01-10 陕西开拓建筑科技有限公司 Hydraulic support for separate mining and transportation mining of thin coal seam and mining method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103256048A (en) * 2013-05-30 2013-08-21 天地科技股份有限公司 Mining method of coal drilling unit for comprehensive mechanized coal mining
CN103256048B (en) * 2013-05-30 2016-06-08 天地科技股份有限公司 Combine and adopt coal drilling machine group recovery method
CN103410517A (en) * 2013-07-05 2013-11-27 中国煤炭科工集团太原研究院 Fast driving stepping self-moving rubber belt conveyor tail supporting device
CN103993896A (en) * 2014-05-16 2014-08-20 中煤北京煤矿机械有限责任公司 Special bottom adjusting device for thin coal seam support
CN110566205A (en) * 2019-09-18 2019-12-13 新疆矿源重工科技有限公司 Mining method for steeply inclined coal seam
CN110656963A (en) * 2019-09-18 2020-01-07 新疆矿源重工科技有限公司 N-shaped fully mechanized mining support for steeply inclined coal seam
CN110671141A (en) * 2019-10-28 2020-01-10 陕西开拓建筑科技有限公司 Hydraulic support for separate mining and transportation mining of thin coal seam and mining method

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C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110803

Termination date: 20170820

CF01 Termination of patent right due to non-payment of annual fee