CN100582435C - Fully mechanized working faces along conveying end head hydraulic bracket - Google Patents
Fully mechanized working faces along conveying end head hydraulic bracket Download PDFInfo
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- CN100582435C CN100582435C CN200610045258A CN200610045258A CN100582435C CN 100582435 C CN100582435 C CN 100582435C CN 200610045258 A CN200610045258 A CN 200610045258A CN 200610045258 A CN200610045258 A CN 200610045258A CN 100582435 C CN100582435 C CN 100582435C
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Abstract
The invention discloses a working face transferring end fluid pressure brace, which is characterized by the following: comprising with front brace support and back brace support to front back two braces as one group type; setting the front brace and the back brace as left right asymmetric structure and nearly same; setting the working face side as short chassis and single stud; setting another side as long chassis, multiple stud and four joint rod device; connecting the top beam on the back brace working face side and the chassis through cable or ring chain, draw top beam or draw shift jack to the front brace or transfer machine; adapting the front and back space of the back brace single stud to the width between the rear edge transferring machine head and the coal getting machine roller front end face; setting anchor bar tendon avoiding protection device at the top beam and front back beam. This brace can increase protection strength and stability.
Description
Technical field
The present invention relates to colliery fully mechanized coal face end support equipment, particularly a kind of at the fully mechanized working faces along conveying end head bracket of adopting deeply greatly, press greatly in the ore deposit, outfit high-power mechanical-electrical equipment work plane is used.
Background technology
The mining exploitation is the advanced high-yield and high-efficiency coal-mining method in the present China and even the world.But the fully mechanized coal face end support still adopts traditional " cross bar " or " Yi Ziliang " to cooperate the individual prop supporting at present mostly, speed is slow, efficient is low, personnel selection is many, labour intensity is big, poor stability, combine with modernization and to put equipment and be not complementary, become the weak link of mining production technique, need to be resolved hurrily.Especially fully mechanized working faces along conveying end head bracket, because the space is narrow and small, advancing equipment is many, circumstance complication, supporting structure and the difficult coordination of function, the solution difficulty is big.Though develop several patterns, as: three one group caving coal face end support of middle-set-type of peaceful coal group, with two one group caving coal face end support in front and back of coal group, simple and easy two one group caving coal face end support of imperial coal group, flat coal group, but exist obviously not enough.
Yanzhou Coal Industry Co., Ltd. has applied for that title is: the patent of " fully mechanized coal face end hydraulic support ", the patent No.: ZL 200420098308.6, notice of authorization number: CN 2787833Y.The problem that solves is: realize fully mechanized coal face end support mechanization of operation, improve fltting speed, reduce heavy manual labor, reduce accident rate.Its formation: be two one group of formulas, constitute by anti-down jack and hydraulic circuit between left frame, right frame, frame; A left side frame, right frame are by three back timbers: before, during and after back timber, three bases: before, during and after base, three columns: before, during and after column constitute.Three back timbers order is hinged, the hinged top front-axle beam that protects of preceding back timber, the hinged caving shield of back back timber; Hinged by connecting base between three bases, preceding base moves jack and connects with elevating conveyor by drawing.Before, the central post spacing and in, the rear column spacing, respectively with work plane front and rear portions conveyer width add the reach step pitch adapt.On the frame base of a left side thruster jack is arranged.It uses more normal; but still have the some shortcomings improvement of still needing: support stability is poor slightly; draw the speed of moving slow; unmatchful roofbolt safeguard measure; supporting intensity is less than normal; the work plane conveyer up and down is subjected to obvious influence during play, draws to move the conveyer head and will draw all that to move face end support influential etc. to producing at every turn.
Summary of the invention
For overcome existing fully mechanized coal face end hydraulic support poor stability,, work plane conveyer low to roof bolting unprotect, supporting intensity up and down big, the face end support of play influence draw to move and produce affected deficiency often, the invention provides a kind of fully mechanized working faces along conveying end head bracket, this support stability is good, supporting intensity is high, can protect the anchor shaft anchor cable supporting; Draw move one's steps apart from big, to pass number of times few, little to the ordinary production influence, can overcome the influence of play up and down of work plane conveyer.
The technical solution adopted for the present invention to solve the technical problems is:
Fully mechanized working faces along conveying end head bracket is formed by at least two, forms two one group of patterns for last two.Every support in two one group is by compositions such as the hinged girder of back timber, column, base, back timber rear and front end and hydraulic control circuits.The base of support both sides and column lay respectively at the stage loader both sides, and the bracket base front end moves jack and connects with the Connection Block of stage loader both sides through drawing.By being arranged on the base of sidewalk one side, side transfers jack.Its structure also comprises following content:
1. two one group of patterns are forward and backward two one group of patterns; That is: comprise side arm support and after-frame support.Move the jack connection by drawing between the base of side arm, after-frame support sidewalk side; Between the work plane side of side arm, after-frame set cap, by wire rope or round-link chain, draw the back timber jack to connect.The base of after-frame support work plane side by wire rope or round-link chain, draw and move jack and be connected with the base or stage loader one side of the work plane side of side arm support.
2. side arm, after-frame support are left and right sides unsymmetric structure; That is: the base of the work plane side of after-frame support is single column for short base, column, and the base of its opposite side is long base, hinged 1～3 root post and quadric chain on the long base.The upper end of after-frame support two heel posts and the upper end of quadric chain and same the wide back timber across stage loader are hinged.The base of the work plane side of side arm support is single column for short base, column, and all the other are also identical with the after-frame support.
3. in work plane one side, the spacing between single column of after-frame support and the single column of side arm support, and trailing edge to the width between the front end face of coal mining machine roller of the anterior drag conveyor head of work plane adds twice reach step pitch and adapts; Single column of after-frame support and the spacing between the tail boom end add twice reach step pitch with the width of work plane rear portion drag conveyor head and adapt.
4. the back timber of side arm, after-frame support has anchor shaft anchor cable to dodge protection mechanism.By transferring jack to form on the movable panel on the back timber end face, the top that is articulated between back timber and the movable panel.Movable panel is the flat board that the ribbon groove is arranged on the end face.On the front-axle beam that the front-axle beam of after-frame back timber, side arm back timber are hinged and the end face of the back rest, the adjustable top board alive in permanent position is arranged.The top surface structure of top board alive is identical with movable panel.
The technical solution adopted for the present invention to solve the technical problems can also be:
The side arm of fully mechanized working faces along conveying end head bracket, after-frame support are whole commutating structure; Be to have commutation before and after the support.Nothing location mechanical attachment is adopted in drawing of side arm bracket base front end between the Connection Block that moves jack and elevating conveyor both sides; Promptly two draw that to move the jack front end hinged by the rear end of horizontal bearing pin and two connector I respectively, Connection Block II, Connection Block I that two connector I front ends pass through vertical bearing pin and elevating conveyor both sides respectively are hinged.Quadric chain is made of base, front rod, back link, last connecting rod; The hinged last connecting rod of upper end and back timber is a Y shape.The front-axle beam of back timber, the back rest, tail boom be about two.
The invention has the beneficial effects as follows:
1. this face end support good stability, the supporting intensity height has defencive function to the anchor pole or the cable bolting of crossheading top board.Can satisfy adopt dark big, ore deposit press big, require to have big supporting area and higher supporting intensity, be equipped with the high-power needs of combining the high-yield and high-efficiency fully mechanized coal face fortune of the equipment of putting along end support.
2. can realize that work plane advances two cuttves, fortune only to move forward once along face end support continuously, strengthened unit advance, reduced and move the sortie number, thereby, reduced the number of times that face end support supports repeatedly, reduced because of moving the influence number of times of face end support the work plane ordinary production.
3. can overcome the influence of play up and down of work plane front and rear portions drag conveyor effectively.
4. left and right work plane is general, can not cause the idleness of equipment.
5. it is big to solve between the crab bearer frame gap, leaks coal, the serious problem of cash.
Description of drawings
Fig. 1 is the A-A sectional view among structural representation Fig. 3 of the present invention.
Fig. 2 is the B-B sectional view among structural representation Fig. 3 of the present invention.
Fig. 3 is the schematic diagram front view of fully mechanized working faces along conveying end head bracket structure of the present invention.
Fig. 4 is the C-C sectional view among structural representation Fig. 1 of the present invention.
Fig. 5 is the D-D sectional view among structural representation Fig. 1 of the present invention.
Fig. 6 is the E-E sectional view among structural representation Fig. 1 of the present invention.
Among the figure: 1-side arm front-axle beam, 2-side arm back timber, the 3-side arm back rest, 4-after-frame front-axle beam, 5-after-frame back timber, 6-after-frame tail boom, the short base of 7-after-frame, the 8-rear frame single column, the short base of 9-side arm, 10-side arm list column, 11-side arm front-axle beam jack, 12-side arm back rest jack, 13-after-frame front-axle beam jack, 14-after-frame balance jack, the 15-movable panel, the 16-round-link chain, 17-rear portion drag conveyor head, the anterior drag conveyor head of 18-, the 19-coal mining machine roller, the 20-wire rope, 21-side arm front column, 22-side arm rear column, 23-hydraulic control valve group, 24-after-frame front column, 25-after-frame rear column, the last connecting rod of 26-, the 27-back link, the 28-front rod, 29-after-frame base, 30-draws and moves jack, 31-side arm base, the 32-side arm draws and moves jack, 33-connector I, 34-Connection Block II, 35-top board alive, 36-Connection Block I, 37-connector I, the 38-side arm draws and moves jack, the 39-wire rope draws and moves jack, 40-connector II, the wedge joint of 41-wire rope, the 42-positioning seat, the 43-stage loader, 44-work plane crab bearer, 45-back timber side is transferred jack, the 46-anchorage, 47-base side is transferred jack, 48-transfers jack in the top, 49-draws the back timber jack, the 50-supporting seat.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
As follows in the fully mechanized working faces along conveying end head bracket structure of the present invention shown in Fig. 1～3:
1. this fully mechanized working faces along conveying end head bracket is two the one group of patterns in front and back.That is: form one group by forward and backward two, divide side arm support and after-frame support.Side arm support, after-frame support all are compositions such as the hinged girder by back timber, three columns, two bases, back timber rear and front end, and hydraulic control circuit.
2. side arm support, after-frame support are left and right sides unsymmetric structure.Be that the active side of side arm, after-frame support and the structure of sidewalk survey are unsymmetric structure; That is two stands is not symmetrical in the stage loader both sides: a side is short base, single column, and opposite side is long base, two column, quadric chain.
Fig. 1 illustrates side arm support of this face end support and the structure that the after-frame support leans on work plane one side.The after-frame support is single column 8 at the base of this side for short base 7, column.The side arm support is single column 10 at the base of this side for short base 9, column.Short base 7 front ends of after-frame move jack 39 rear ends and are connected with drawing by wire rope 20.Short base 9 front ends of side arm with draw that to move jack 32 rear ends hinged.The back timber 5 of after-frame support this side by round-link chain 16, draw back timber jack 49, be connected with the back timber 2 of side arm support.Referring to Fig. 3.
Fig. 2 illustrates side arm support of this face end support and the structure that the after-frame support leans on sidewalk one side.The after-frame support is two columns at the base 29 of this side for long base, column; After-frame base 29 except hinged with front column 24 and rear column 25, also be articulated in front rod 28 on the base 29 and back link 27, hinged, formation quadric chain with hinged the last connecting rod 26 in front rod 28 and back link 27 upper ends.The upper end of last connecting rod 26 and after-frame back timber 5 are hinged.The top bifurcated of last connecting rod 26, be " Y " shape.Referring to Fig. 4～6.Equally, the side arm support is two columns at the base 31 of this side for long base, column; Side arm base 31 except hinged with front column 21, rear column 22, also with back link, the front rod identical with the after-frame support, go up rod hinge connection and constitute quadric chain.The upper end of connecting rod and back timber 2 are hinged on " Y " shape.Adopt quadric chain can improve the ability of the anti-horizontal thrust of support, play stabilization.
To move jack 30 hinged by drawing between side arm base 31 rear ends and after-frame base 29 front ends.Side arm base 31 front ends draw by side arm and move jack 32, connector I33, and are hinged with the Connection Block II34 that is fixed in stage loader 43 1 sides.
Fig. 3 illustrates the side arm support of this face end support, the plan structure of after-frame support.Short base 7, single column 8 of after-frame support work plane side lay respectively at stage loader 43 both sides with the long base 29 of sidewalk side, two column and quadric chain, and its upper end is with hinged across the same wide after-frame back timber 5 of elevating conveyor 43.The side arm support is basic identical with the back shelf structure, and its back timber is the wide back timber 2 across elevating conveyor 43.
The work plane side of after-frame set cap 5 has the chain Connection Block, and round-link chain 16 is connected with the chain Connection Block.Back timber 5 by round-link chain 16, draw back timber jack 49, be connected with side arm set cap 2.Draw back timber jack 49 to be fixed in work plane one side of side arm back timber 2 by supporting seat 50.Referring to Fig. 6.
Shown in Fig. 3,1, back timber 5 front ends of after-frame support and symmetrical two front-axle beams 4 are hinged, and back timber 5 rear ends and symmetrical two tail booms 6 are hinged; Between back timber 5 and the front-axle beam 4 by after-frame front-axle beam jack 13 hinge-coupled, between back timber 5 and the tail boom 6 by after-frame balance jack 14 hinge-coupled.The front end of side arm set cap 2 and symmetrical two front-axle beams 1 are hinged, and back timber 2 rear ends and symmetrical two back rest 3 are hinged; Between back timber 2 and the front-axle beam 1 by front-axle beam jack 11 hinge-coupled, between the back timber 2 and the back rest 3 by back rest jack 12 hinge-coupled.Establish front-axle beam, the back rest before and after the back timber, can adapt to the fluctuating of crossheading top board.
3. this face end support is in the front and back by work plane one side, after-frame support list column 8, gives the space of twice reach staying the anterior conveyer of work plane and coal-winning machine, rear portion conveyer.Shown in Fig. 1,3.Setting by at the short base of work plane side, single column etc. has strengthened the reach space that work plane fells and transports equipment.
Spacing between after-frame support list column 8 and tail boom 6 ends, be slightly larger than work plane rear portion drag conveyor head 17 width and add the reach step pitch of moving twice on frame with force piece, in other words, adding twice reach step pitch with rear portion drag conveyor head 17 width adapts.Spacing between after-frame support list column 8 and the side arm support list column 10, being slightly larger than the anterior drag conveyor head of work plane 18 trailing edges to shared width between coal mining machine roller 19 front end faces adds with force piece and moves twice reach of frame step pitch, in other words, adding twice reach step pitch with anterior drag conveyor head 18 trailing edges to the width of coal mining machine roller 19 front end faces adapts.
When coal mining machine roller 19 cuts two cuttves, force piece moves two step pitches, work plane rear portion conveyer head 17,18 reaches twice of anterior conveyer head, and this face end support just moves frame once, has strengthened the unit advance of face end support, has reduced and has moved the sortie number.Cutting dark 800mm with coal mining machine roller is example, cuts a cutter drilling depth 800mm, and force piece unit advance 800mm moves twice on frame and is 1.6m, and this face end support moves frame 1.6m at every turn, supports repeatedly 8 times in the about lower end supporting scope domestic demand of 15m; If existing face end support moves frame 0.8m at every turn, then need support repeatedly 20 times.As seen, reduced the number of times that face end support supports repeatedly to top board in that same supporting distance is interior, favourable to integrality and the stability of safeguarding top board; Reduced on the other hand because of moving the influence number of times of face end support the work plane ordinary production.
4. the back timber of this face end support is provided with anchor shaft anchor cable and dodges protection mechanism.Shown in Fig. 4～6.
Establish movable panel 15 on the end face of back timber 2,5.Movable panel 15 is a reeded flat board on the end face, and the degree of depth of groove and width are greater than the length and the diameter of crossheading roofbolt or anchor cable afterbody bared end.Movable panel 15 and be positioned at back timber 5, transfer jack 48 hinged with the hinged top of back timber 5, the composition anchor shaft anchor cable is dodged protection mechanism.Movable panel 15 is transferred under the promotion of jack 48 on the top, can slide along the end face of back timber, anchor pole or anchor cable afterbody are in the groove of movable panel 15 end faces, avoid the anchor pole of haulage gate top board or anchor cable to be destroyed, safeguard the integrality of top board because of back timber supports repeatedly.
On the end face of the front-axle beam 4 of after-frame back timber 5 and the front-axle beam 1 of side arm back timber 2, the back rest 3, be provided with top board 35 alive.Live top board 35 by diplopore bearing pin and cottor pin, backing plate etc., be connected on the end face of the front- axle beam 1,4 and the back rest 3.The top surface structure of top board 35 alive is identical with movable panel 15, and its position on front-axle beam, back top surface of the beam can be fixed after adjustment.Referring to Fig. 1,2.
5. adopting between this face end support and the stage loader 43 does not have the location mechanical attachment.As shown in Figure 3.Drawing of side arm bracket base 31 front ends moves jack 32, and be hinged by horizontal bearing pin and connector I33 rear end, and connector I33 front end is hinged by the Connection Block II34 of vertical bearing pin and stage loader 43.Drawing of short base 9 front ends of side arm support moves jack 38, and be hinged by horizontal bearing pin and connector I37 rear end, and connector I37 front end is hinged with the Connection Block I36 that is fixed in stage loader 43 opposite sides by vertical bearing pin.Since two connector I33 and 37 at Connection Block, draw and move between the jack, one end is vertically hinged, the other end is horizontally hinged, make to form between this face end support and the stage loader 43 and do not have the mechanical connecting relation in location, that is: this face end support has big degree of freedom in the horizontal, move flexibly, compliance is strong, and package size is loose.These characteristics are connected with wire rope with the short base of this face end support, single column and after-frame base draws the characteristics combination that moves, the local terminal head bracket is moved flexibly at the scene, do not influence the adjustment of stage loader 43 positions, thereby having overcome existing fortune influences the drawback that stage loader 43 lateral attitudes are adjusted along face end support.Specifically, when work plane front and rear portions conveyer head 17,18 glide along work plane or on when scurrying, need adjust the lateral attitude of stage loader 43 up or down, carry machine-made egg-shaped or honey-comb coal briquets to wander the coal position to adapt to, and existing fortune is long along the base of face end support, draw to the work plane direction and to move, can't adjust being subjected to stopping of work plane front and rear portions conveyer head.And the single-column side of this face end support has the space that moves laterally between front and rear portions conveyer head, can laterally adjust the position of stage loader 43, and can not be subjected to the restriction of face end support again.And, can also solve and 44 of work plane crab bearers between the gap big, leak coal, the serious problem of cash.
6. this face end support sidewalk side is established side and is transferred jack.Shown in Fig. 4,6.There is the base side to transfer jack 47 on side arm base 31 and the after-frame base 29, is fixed on the base by the base support seat.There is the back timber side to transfer jack 45 on side arm back timber 2 and the after-frame back timber 5.The base side transfers jack 47 and back timber side to transfer jack 45 external end heads that anchorage 46 is arranged.Utilize side to transfer jack can realize the adjustment of face end support lateral attitude.
7. general for adapting to left and right work plane, side arm, after-frame support are whole commutating structure, promptly have commutation before and after the support.The front-axle beam 1 of side arm back timber 2 is identical with the back rest 3 structures, and its base 9 has identical articulated structure with 31 front and back ends.Though the front-axle beam 4 of after-frame back timber 5, tail boom 6 structures are different with length, with the articulated structure and the consistent size of back timber 5 front and back ends.After-frame base 7 has identical draw bail with 29 front and back end.The side arm support can directly reverse end for end to use, and after-frame only need exchange tail boom 6 and front-axle beam 4 can reverse end for end to use.
8. hydraulic control circuit: mainly by hydraulic control valve group 23, hydraulic lock, safety valve, stop valve, and hydraulic pressure auxiliary elements such as high-pressure rubber pipe, snap joint are formed.Be used as power by the emulsion power pack feed flow.
Except such scheme, the present invention can also be by the following technical solutions:
1. this face end support also can adopt many supports to form, for example: 3,4.Its last two, promptly near two of fully mechanized coal face, make side arm support, after-frame support.All the other each framves are made advance timbering, and its type can be provided with flexibly.Support is crossed to draw from Mobile Communication and is moved jack and connect with the base of elevating conveyor or side arm.
2. the column on side arm base 31 and the after-frame base 29 also can adopt a column or three column forms.
3. after-frame base 29 moves between jack 39, side arm back timber 2 and the after-frame back timber 5 and can be connected with round-link chain with drawing, and also available wire rope connects.Draw and move jack 39 front ends and also can connect with after-frame base 29.
4. the hinged girder of side arm, after-frame support also can adopt whole front-axle beam, the back rest and tail boom.
Claims (6)
1. a fully mechanized working faces along conveying end head bracket comprises two at least, forms two one group of patterns for last two; Each frame support in two one group includes the hinged girder of back timber, column, base, back timber rear and front end, and hydraulic control circuit; The base of support both sides and column lay respectively at the both sides of stage loader, and the front end of bracket base moves jack and connects with the Connection Block of stage loader both sides through drawing, and transfer jack by side is arranged on the base of sidewalk one side, it is characterized in that:
1. said two one group of patterns are forward and backward two one group of patterns, comprise side arm support and after-frame support that is:; Move jack (30) connection by drawing between the base of side arm, after-frame support sidewalk side; Between the work plane side of side arm, after-frame set cap, by wire rope or round-link chain, draw the back timber jack to connect; The base of after-frame support work plane side by wire rope or round-link chain, draw and move jack and be connected with the base or stage loader one side of the work plane side of side arm support;
2. side arm, after-frame support are left and right sides unsymmetric structure; That is: the base of the work plane side of after-frame support is single column (8) for short base (7), column, and the base of its opposite side is a long base (29), is hinged with 1～3 root post and quadric chain on the long base (29); The upper end of after-frame support two heel posts and the upper end of quadric chain and same the wide back timber (5) across stage loader are hinged; The base of the work plane side of side arm support is single column (10) for short base (9), column, and all the other are also identical with the after-frame support;
3. in work plane one side, the spacing between single column (8) of after-frame support and the single column (10) of side arm support, and anterior drag conveyor head (18) trailing edge of work plane to the width between coal mining machine roller (19) front end face adds twice reach step pitch and adapts; Spacing between single column (8) of after-frame support and tail boom (6) end adds twice reach step pitch with the width of work plane rear portion drag conveyor head (17) and adapts;
4. the back timber of side arm, after-frame support has anchor shaft anchor cable to dodge protection mechanism; Jack (48) is transferred on the top that comprises movable panel (15) on the back timber end face, is articulated between back timber (2,5) and the movable panel (15); Movable panel (15) is for there being the flat board of ribbon groove on the end face;
On the hinged front-axle beam (1) and the back rest (3) end face of hinged front-axle beam (4), the side arm set cap of after-frame set cap, the adjustable top board alive (35) in permanent position is arranged; Its top surface structure is identical with movable panel (15).
2. fully mechanized working faces along conveying end head bracket according to claim 1, it is characterized in that: said side arm support, after-frame support are whole commutating structure, be to have commutation before and after the support, that is, the front-axle beam (1) of side arm set cap (2) is identical with the back rest (3) structure, and the front and back end of its base (9,31) has identical articulated structure; The articulated structure and the consistent size of the front-axle beam of after-frame support (4), tail boom (6) and back timber (5) front and back end, the front and back end of its base (7,29) has identical draw bail.
3. fully mechanized working faces along conveying end head bracket according to claim 1 is characterized in that: the drawing of said bracket base front end moved connecting of jack and stage loader both sides Connection Block, is not have the location mechanical attachment; That is, drawing of short base (9) front end of side arm support moved jack (38) and connected with the Connection Block I (36) of elevating conveyor (43) one sides by connector I (37); The drawing of side arm bracket base (31) front end moved jack (32) and connected with the Connection Block II (34) of elevating conveyor (43) opposite side by connector I (33); The rear end and two of two connector I (37,33) is drawn and moved jack (38,32) is that horizontal bearing pin is hinged, and the front end of two connector I (37,33) is that vertical bearing pin is hinged with Connection Block I (36), Connection Block II (34).
4. fully mechanized working faces along conveying end head bracket according to claim 1 is characterized in that: the column on the long base of said side arm support and after-frame support (31,29) respectively is two; Between the work plane side of the back timber of side arm, after-frame support (2,5) by drawing back timber jack (49), round-link chain (16) to be connected; The short base (10) of after-frame support by wire rope (20), draw and move jack (39) and be connected with the Connection Block I (36) of stage loader one side.
5. fully mechanized working faces along conveying end head bracket according to claim 1, it is characterized in that: said quadric chain, comprise base (31,29), be articulated in front rod (28) on the base and back link (27), with front rod (28) and back link (27) on hinged last connecting rod (26), the upper end of last connecting rod (26) and back timber (2,5) are hinged; Last connecting rod (26) is " Y " shape connecting rod.
6. fully mechanized working faces along conveying end head bracket according to claim 1, it is characterized in that: the forward and backward hinged girder of said back timber is, side arm set cap (2) front end hinged about two front-axle beams (1), back timber (2) rear end hinged about two back rest (3), after-frame set cap (5) front end hinged about two front-axle beams (4), back timber (5) rear end hinged about two tail booms (6); The sidewalk side of back timber (2,5) has the back timber side to transfer jack (45).
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| CN200610045258A CN100582435C (en) | 2006-06-30 | 2006-06-30 | Fully mechanized working faces along conveying end head hydraulic bracket |
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| CN114320418B (en) * | 2022-01-05 | 2023-11-03 | 国家能源集团国源电力有限公司 | Coal mine working face support and control method thereof |
| CN117588248B (en) * | 2024-01-19 | 2024-03-29 | 阳泉市广凯机械制造有限公司 | Top beam and hydraulic support and use method thereof |
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2006
- 2006-06-30 CN CN200610045258A patent/CN100582435C/en not_active Expired - Fee Related
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| CN101096911A (en) | 2008-01-02 |
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