Belt conveyer bilateral broken belt catcher
Technical field
The present invention relates to brake equipment, particularly a kind of belt conveyer bilateral broken belt catcher.
Background technology
Along with constantly improving and development of belt conveying machine technology, belt conveyer has become the best equipment of bulk material continuative transport, reprinting.But under high speed, high tension operating mode, can there is broken belt accident in the load-transfer device of carrying material, especially comparatively frequent in inclined shaft generation broken belt accident.Even if Belt-conveyors of Belt-broken Seizing Machine has respective advantage in the middle of practical application, but existing defects invariably.If form of arresting, for arresting local, if can not ensure that equilibrium of forces is arrested in both sides, easily causes the longitudinal tear of load-transfer device; Arrest if the form of arresting is tunneling boring, then hydraulic system is huge, expensive, and requires higher to installation site; According to simple electric-control system, reflect according in practical application, be not very reliable by the method for electro-detection, easily produce misoperation, like that also can bring inconceivable consequence to mine safety production.Therefore, need a kind of mechanism, accurately can complete trigger action, and cAN _ SNture safely and effectively can be completed with lower-cost hydraulic efficiency pressure system.
Existing several frequently seen device, such as application number is 201310174250.2,201310125680.5,201410345666.0,201310411634.1,2012-10530234.8, the problem that the arresting agency split that this several device all exists the left and right sides triggers, namely after One-way cradle roll action, cannot guarantee that the arresting agency of both sides makes the action of clamping belt simultaneously, there is certain potential safety hazard.
Summary of the invention
The object of this invention is to provide a kind of belt conveyer bilateral broken belt catcher.
For achieving the above object, the technical solution used in the present invention is: a kind of belt conveyer bilateral broken belt catcher, it comprises fixed mount, to be installed on described fixed mount and the belt both sides being positioned at belt conveyer be wedge shape arrest seat, to arrest described in belt being pressed on after triggering on seat thus belt is braked arrest arm, for triggering trigger unit and the link gear of arresting arm action during broken belt, described trigger unit comprises and to be installed on below described belt and can be compressed by described belt the One-way cradle roll driven after there is broken belt, install with one end of described One-way cradle roll and the gear be coaxially fixedly connected with described One-way cradle roll, the tooth bar be meshed with described gear, the change-over valve be in transmission connection mutually of reversing handle and described tooth bar, described link gear comprises two and to be fixedly installed on described fixed mount and the A-frame of symmetrical setting, be rotationally connected with on described A-frame and two ends be fixed with symmetrically arranged described in arrest arm arrest crossbeam, controlled by described change-over valve and rotate thus the hydraulic ram of arresting on seat and then belt is braked described in belt being pressed on after making to arrest arm swing for arresting crossbeam described in driving.
Optimize, described in arrest arm end have and the described wedge shape brake shoe of arresting seat and matching.
Optimize, link gear also comprises the entablatrance be fixed between two described A-frame upper ends, the cylinder body of described hydraulic ram installs perpendicular to described entablatrance and cylinder body and described entablatrance pass through hinged-support phase hinge, each described A-frame has a set square, described crossbeam of arresting is rotationally connected with between two described set squares, the free end of the piston rod of described hydraulic ram is hinged by hinged-support and described crossbeam of arresting, when there is broken belt, described arm of arresting is identical with the sense of motion after componental movement on the direction that belt movement direction parallels and belt broken belt.
Further, arrest crossbeam described in be connected with described set square by hinged-support.
Optimize, described in arrest arm and described beam welding of arresting is fixed.
Optimize, described tooth bar is arranged along described Belt Conveying direction, and described change-over valve is installed on below it, and the handle of change-over valve is connected with one end of a lever, and the other end of described lever is positioned on the travel path of described tooth bar.
Optimize, described in arrest crossbeam be U-steel.
Optimize, the cylinder body bottom of described hydraulic ram is articulated with on described fixed mount by hinged-support, arrest on crossbeam described in the free end of its piston rod is articulated with by hinged-support, describedly arrest the both sides that arm and hydraulic ram lay respectively at the hinge-point of arresting crossbeam and A-frame, and when there is broken belt, described in arrest arm identical with the sense of motion after componental movement on the direction that belt movement direction parallels and belt broken belt.
Because technique scheme is used, the present invention compared with prior art has following advantages: utilize the triggering of simple hydraulic efficiency pressure system realization to break catching apparatus, fast response time; Utilize wedge shape braking principle, when arresting, wedge shape brake shoe and wedge shape arrest that seat can more wedge be tighter, provide enough large and arrest power, fracture belt promptly can be made to stop gliding, be applicable to the belt-conveying compared with high spud angle; Described arresting agency is simply reasonable in design, and what use single acting oil cylinder to drive just can to obtain enough large and balance arrests power, simplifies hydraulic efficiency pressure system; Whether described detection trigger mechanism simplicity of design is ingenious, change by detecting conveyer belt velocity reversal with the One-way cradle roll of belt contacts, ensure that accuracy of detection and detects controllability; And when generation broken belt, two arrest arm inherently simultaneously action from left and right sides clamping belt.
Accompanying drawing explanation
Fig. 1 is that the present invention is in non-structural representation when arresting state;
Fig. 2 is the structural representation that the present invention is in when arresting state;
Fig. 3 is the left view of break catching apparatus of the present invention;
Tu4Shi broken belt testing agency hydraulic schematic diagram;
In figure: 1-hydraulic ram; 2-A-frame; 2-1-set square; 3-entablatrance; 4-One-way cradle roll; 5-fixed mount; 6-change-over valve; 7-gear; 8-arrest seat; 9-arrest crossbeam; 10-arrest arm; 11-tooth bar; 12-manual pump; 13-by pass valve; 14-check valve.
Detailed description of the invention
Below in conjunction with embodiment shown in the drawings, the invention will be further described.
As shown in Figure 1, 2, 3, the belt both sides that belt conveyer bilateral broken belt catcher comprises fixed mount 5, is installed on fixed mount 5 and is positioned at belt conveyer be wedge shape arrest seat 8, trigger after belt is pressed on arrest on seat 8 thus belt brake arrest arm 10, arm 10 action is arrested in triggering when being used for broken belt trigger unit 16 and link gear 17.
Trigger unit 16 comprise to be installed on below belt and after there is broken belt can by belt compress drive One-way cradle roll 4, install with one end of One-way cradle roll 4 and the gear 7 be coaxially fixedly connected with One-way cradle roll 4, the change-over valve 6 be in transmission connection mutually of tooth bar 11, reversing handle and tooth bar 11 that is meshed with gear 7, as shown in Figure 4, change-over valve 6 be two position three way directional control valve, by pressure release and the topping up of HYDRAULIC CONTROL SYSTEM hydraulic ram 1, the topping up of hydraulic ram 1 is completed by Hydraulic Pump 12, and system pressure has by pass valve 13 to set.
Link gear 17 comprises two and to be fixedly installed on fixed mount 5 and the A-frame 2 of symmetrical setting, be rotationally connected with on A-frame 2 and two ends be fixed with symmetrically arranged arrest arm 10 arrest crossbeam 9, controlled by change-over valve 6 and arrest crossbeam 9 and rotate thus make to arrest after arm 10 swings for driving and belt is pressed on the hydraulic ram 1 of arresting on seat 8 and then belt being braked, be fixed on the entablatrance 3 between two A-frame 2 upper ends, the cylinder body of hydraulic ram 1 install perpendicular to entablatrance 3 and cylinder body and entablatrance 3 by hinged-support phase hinge, each A-frame 2 has a set square 2-1, the crossbeam 9 of arresting be made up of U-steel is rotationally connected with between two set square 2-1, arrest crossbeam 9 to be connected with set square 2-1 by hinged-support.The free end of the piston rod of hydraulic ram 1 by hinged-support with arrest crossbeam 9 and be hinged, when there is broken belt, it is identical with the sense of motion after componental movement on the direction that belt movement direction parallels and belt broken belt to arrest arm 10.The end of arresting arm 10 has and the wedge shape brake shoe of arresting seat 8 and matching, its with arrest crossbeam 9 and be welded and fixed.Tooth bar 11 is arranged along Belt Conveying direction, and change-over valve 6 is installed on below it, and the handle of change-over valve 6 is connected with one end of a lever, and the other end of lever is positioned on the travel path of tooth bar 11.
Non-arrest state time, hydraulic oil compression disk spring in described hydraulic ram 1, piston rod retraction drive is arrested crossbeam 9 and is rotated around A-frame 2 set square 2-1, thus makes to arrest arm 10 and lift and higher than the material on belt feeder, do not affect the normal work of travelling belt.
After broken belt, tooth bar 11 promotes change-over valve 6 to right position, and hydraulic ram 1 pressure release promotes to arrest arm 10 and moves down fast and implement belt and arrest.
After catch brake, manually arresting agency, to arresting the pressurization of oil cylinder 1 topping up, resets by pump 12, ensures the normal transport of material.Select manual pump to be because oil mass is little needed for system, avoid the inconvenience using electric elements to bring simultaneously.
When there is conveyer belt fracture accident, retrograde downslide due to conveyer belt causes the One-way cradle roll 4 be in contact with it to rotate backward, connected gear 7 is driven to rotate, tooth bar 11 engages with gear 7 and moves horizontally, until promote change-over valve 6 push rod, open change-over valve 6 and make hydraulic ram 1 emptying rapidly, stretch out at disc spring effect lower piston rod, drive is arrested crossbeam 9 and is rotated, arrest arm 10 to lower swing, load-transfer device is pressed on brake shoe and arrests in wedge shape space that both seats 8 are formed the most at last, the sliding force produced after utilizing conveyor belt breakage is as braking and drive force, constantly make brake shoe and arrest the final self-locking of seat 8 clamping belt, by the load-transfer device braking of gliding.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify; as: as described in the cylinder body bottom of hydraulic ram to be articulated with by hinged-support as described on fixed mount; arrest on crossbeam described in the free end of its piston rod is articulated with by hinged-support; describedly arrest the both sides that arm and hydraulic ram lay respectively at the hinge-point of arresting crossbeam and A-frame; and when there is broken belt; described arm of arresting is identical with the sense of motion after componental movement on the direction that belt movement direction parallels and belt broken belt, all should be encompassed within protection scope of the present invention.