A kind of device that is used for the tight chain of slat conveyer
Technical field
The present invention relates to a kind of mining chain tension adjusting device, especially for the chain tension adjusting device of slat conveyer.
Background technology
Slat conveyer is the indispensable equipment of colliery digging, and the equipment service efficiency is high.The degree of depth of tunneling along with underworkings constantly increases, and the chain of slat conveyer needs constantly lengthening.When adding reel chain, need unclamp original chain earlier, increase then and connect new chain, fed distance that could the extension screed conveyer.At present, chain tension adjusting device has multiple, and this enterprise is in the patent of first to file, and application number is 201110110908.4 " a kind of chain tension adjusting device "; Comprise pull hook and telescoping mechanism, an end of guide rail and oil cylinder bottom are spirally connected and are one, and the other end is embedded in the slide block; And with the slide block bearing fit, slide block two lateral surfaces are equipped with support, an end of two pull bars is spirally connected with support respectively; And the other end is spirally connected with top board respectively and is one, and the guide rail bottom is provided with the Zola and colludes, and slider bottom is provided with right pull hook.Because being spirally connected with the oil cylinder bottom, an end of guide rail is one, causes integrally-built cun longlyer to the greatest extent that pull bar also need be done longlyer, and tensile strength is decreased, and inconvenience very when in the finite space of down-hole, carrying and installing.
Summary of the invention
The objective of the invention is to overcome the deficiency that above-mentioned prior art exists, a kind of chain tension adjusting device that is used for slat conveyer that can reduce scantling length, improve load-carrying capacity is provided.
The technical scheme that the present invention adopted is: comprise top board, oil cylinder, guide rail, pull bar and slide block, guide rail be arranged in slide block and with the slide block bearing fit, slide block two lateral surfaces are equipped with support; One end of two pull bars is spirally connected with support respectively, and the other end is spirally connected with top board respectively and is one, and the guide rail bottom is provided with the Zola and colludes; Slider bottom is provided with right pull hook; Piston rod stretches out from the hole at guide plate center, and two pull bars pass from the pilot hole of guide plate both sides respectively, and guide plate is screwed onto the end face of guide rail one end; And guide rail other end end face is provided with the swivel nut support; One end of switching swivel nut is provided with groove, and the upper end of swivel nut support is embedded in the groove, and the other end of switching swivel nut is spirally connected with the set spiral shell that is connected in oil cylinder bottom.
On guide rail, collude an end and be provided with supporting leg away from the Zola.
The bottom of said swivel nut support is fixed on the guide rail through core through screw rod.
Have dovetail furrow on the said guide rail, the bottom of said swivel nut support and the connection mode of guide rail are the swallow tail structure.
Guide plate is screwed onto the end face of guide rail one end among the present invention, and guide rail other end end face is provided with the swivel nut support, and an end of switching swivel nut is provided with groove, and the upper end of swivel nut support is embedded in the groove, and the other end of switching swivel nut is spirally connected with the set spiral shell that is connected in oil cylinder bottom.Therefore, oil cylinder places the guide rail top abreast, and integral structure is shortened, the also corresponding shortening of pull bar, and the tensile strength of pull bar is enhanced.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the STRUCTURE DECOMPOSITION scheme drawing of Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain, but do not constitute any restriction of the present invention.Illustrated in figures 1 and 2, the present invention includes top board 1, oil cylinder 3, guide rail 8, pull bar 7 and slide block 9.Guide rail 8 be arranged in slide block 9 and with slide block 9 bearing fits.The end that 9 liang of lateral surfaces of slide block are equipped with support 6, two pull bars 7 is spirally connected with support 6 respectively, and the other end is spirally connected with top board 1 respectively and is one.Guide rail 8 bottoms are provided with the Zola and collude, and slide block 9 bottoms are provided with right pull hook.Piston rod stretches out from the hole at guide plate 2 centers.Two pull bars 7 pass from the pilot hole of guide plate 2 both sides respectively; Guide plate 2 is screwed onto the end face of guide rail 8 one ends; And guide rail 8 other end end faces are provided with swivel nut support 5; One end of switching swivel nut 4 is provided with groove, and the upper end of swivel nut support 5 is embedded in the groove, and the other end of switching swivel nut 4 is spirally connected with the set spiral shell that is connected in oil cylinder 3 bottoms.After above-mentioned installation, oil cylinder 3 is positioned at guide rail 8 tops, makes integral structure on length, reduce the length of an oil cylinder 3 nearly, and is therefore, very convenient when moving and install.Simultaneously, because the integral structure reduction, the length of pull bar 7 also shortens, and the tensile strength of pull bar 7 is further enhanced.Be convenient and place that at an end of guide rail 8 supporting leg 11 can be set, this supporting leg 11 can be welded in guide rail 8 sides; Also can be screwed onto guide rail 8 sides; Two supporting legs 11 lay respectively at guide rail 8 both sides and form the splayed structure, collude with right pull hook with the Zola and form four supporting legs, make the stable placement of complete machine.Can establish screw in the bottom of above-mentioned swivel nut support 5, be fixed on the guide rail 8 through core through screw rod 10.Also can on guide rail 8, offer dovetail furrow, the bottom of swivel nut support 5 adopts the swallow tail structure to be connected with guide rail 8.In a word, accomplish above-mentioned installation after, oil cylinder 3 two ends are connected as one with guide rail 8 two ends through guide plate 2 and switching swivel nut 4 and swivel nut support 5 thereof respectively, and make oil cylinder 3 overhead above guide rail 8.During work, oil cylinder 3 is intact with its system's installation, open the switch that moves ahead; Oil cylinder 3 keeps motionless with guide rail 8, and oil cylinder 3 pistons stretch out, and piston withstands top board 1 and moves; Top board 1 drives support 5 through pull bar 7 and slide block 9 is done to move in the same way; The Zola who is positioned at guide rail 8 bottoms colludes and the right side that is positioned at slide block 9 bottoms is done to move in opposite directions, and the Zola colludes with the distance of right pull hook more and more littler, collude respectively the Zola collude with right pull hook on chain draw close; Chain is tightened up, and takes chain apart this moment, increases the sequence of operations of chain.After operation is accomplished, open reset switch, oil cylinder 3 pistons retraction; This moment, the tension force of chain was bigger, and under the effect of chain tension, right pull hook drives support 5 and slide block 9 slides to the direction of colluding away from the Zola; Until the Zola collude with right pull hook no longer stressed till, lay down chain and promptly accomplish single job.Oil cylinder described in the present invention 3 and system thereof are prior art, and its principle of work and connection mode repeat no more.