Chain conveyor and chain rupture guard method
Technical field
The present invention relates to conveying machinery, particularly relate to chain conveyor.The invention still further relates to the chain rupture guard method of this chain conveyor.
Background technology
The advantages such as it is simple in structure, reliable that climbing conveyer has general belt conveyor, easy to maintenance, thereby be widely used in the departments such as coal, metallurgy, building, grain, chemical industry, electric power.For obtaining good material feeding and prerequisite for discharging, position and level attitude arrange drive wheel at various height conventionally, and the chain of sealing are done under the support of drive wheel to " Z " shape gyroscopic movement, have upper horizontal segment, lower horizontal segment and vertical section.Hopper is connected on chain by bearing pin, under the effect at chain at drive wheel, hopper can be rotated around bearing pin.Hopper material feeding in lower horizontal segment, the hopper discharge in upper horizontal segment, thus realize convey materials between the position of differing heights.
But aborning, once the chain of conveyer ruptures, can cause the material of whole chain and its conveying by the accumulation of dropping under the effect of gravity downwards, cause serious consequence.Therefore, urgent need will have the chain conveyor of chain breakage protection device.
Summary of the invention
For the problems referred to above, the present invention proposes a kind of chain conveyor.This chain conveyor has chain breakage protection device, damages preventing after chain from rupturing.The invention still further relates to chain conveyor chain rupture guard method.
According to a first aspect of the invention, a kind of chain conveyor has been proposed, the chain that comprises annular enclosed type, the wheels of chain drive-belt circulating motion, the tach signal that detects the tachometric survey device of the rotating speed of each wheel in wheels and send according to tachometric survey device is controlled the treater that wheels rotate, wheels comprise the first round that is arranged in low level, be arranged in a high position and on vertical and the first round stagger second take turns and arrange a plurality of bend wheels of the first round and second between taking turns, the first round, second takes turns with a plurality of bend wheels chain is comprised along vertical up section and descending section, at up section, be provided with up chain breakage protection device, at descending section, be provided with descending chain breakage protection device, when there is chain rupture for up section and/or descending section, treater stops operating wheels according to tach signal, and up chain breakage protection device and/or descending chain breakage protection device can tangle the chain of disconnection.
According to chain conveyor of the present invention; when there is chain rupture for up section and/or descending section; in wheels, the rotating speed of at least one wheel can reduce; thereby treater can judge whether to occur chain rupture according to the variation of the tach signal of this wheel; and wheels are stopped operating automatically and avoid pulling the chain of fracture; and up chain breakage protection device or descending chain breakage protection device can prevent that the chain disconnecting from dropping, thereby avoid occurring serious consequence.
In a preferred embodiment, the first round, second take turns with a plurality of bend wheels on be provided with tachometric survey device.This has improved the particularity in wheel tach signal source, thereby can judge exactly up section or descending section of generation chain rupture.
In one embodiment, up chain breakage protection device comprises that to detect up chain breakage protection device stressed and send the first power inductor of the first force signal, and treater is controlled wheels according to tach signal and the first force signal and rotated.In a preferred embodiment, descending chain breakage protection device comprises that to detect descending chain breakage protection device stressed and send the second power inductor of the second force signal, and treater is controlled wheels according to tach signal and the second force signal and rotated.After up section or descending section there is chain rupture; up chain breakage protection device or descending chain breakage protection device can carry the material on chain and chain; cause the stressed remarkable increase of up chain breakage protection device or descending chain breakage protection device; therefore treater resultant force signal and tach signal can judge whether to occur chain rupture more accurately, have mentioned the accuracy of treater judgement.
In one embodiment, the quantity of up chain breakage protection device and descending chain breakage protection device is a plurality of, and interval type is arranged in vertical direction.When chain chain rupture, a plurality of fender guards shield simultaneously, disperse stressed, the further Degree of Safety that improves conveyer.
In one embodiment, the first round is wheel flutter, and second takes turns as drive wheel.The quantity of bend wheel is four, and is arranged in two ends and the descending section of two ends of up section, and chain comprises in the first horizontal segment between wheel flutter and corresponding bend wheel and the second horizontal segment between drive wheel and corresponding bend wheel.Be arranged in such a way drive wheel, wheel flutter and four bend wheels, make chain form " Z " shape, facilitate the conveying of material.
The invention still further relates to the purposes in carrying active carbon according to conveyer mentioned above.
According to a second aspect of the invention, a kind of chain rupture guard method of chain conveyor has been proposed, chain conveyor has structure mentioned above, wherein the first round is wheel flutter, second takes turns as drive wheel, the method comprises: treater is compared the rotating speed of wheel flutter and a plurality of bend wheels with the rotating speed of drive wheel, and when the rotating speed of wheel flutter and each bend wheel all mates with the rotating speed of drive wheel, treater judgement conveyer is working properly; In wheel flutter and a plurality of bend wheel, the rotating speed of the rotating speed of any and drive wheel is not time, and treater judgement conveyer generation chain rupture also stops operating wheels.
In one embodiment, up chain breakage protection device and descending chain breakage protection device include the power inductor that sends force signal, the method comprises: treater is compared the rotating speed of wheel flutter and a plurality of bend wheels with the rotating speed of drive wheel, and monitoring force signal, when the rotating speed of wheel flutter and each bend wheel all mates with the rotating speed of drive wheel, and when treater does not monitor force signal, treater judgement conveyer is working properly; In wheel flutter and a plurality of bend wheel, the rotating speed of the rotating speed of any and drive wheel is not time or when treater monitors force signal, treater judgement conveyer generation chain rupture also stops operating wheels.
Compared with prior art; the invention has the advantages that: (1) is when up section or descending section chain rupture occurring; the rotating speed of at least one wheel in wheels can reduce; thereby treater can judge whether to occur chain rupture according to the variation of tach signal; and wheels are stopped operating automatically and avoid pulling the chain of fracture; in addition up chain breakage protection device or descending chain breakage protection device can prevent that the chain disconnecting from dropping, thereby avoid occurring serious consequence.(2) up chain breakage protection device comprises the first power inductor; descending chain breakage protection device comprises the second power inductor; treater comprehensively can judge whether to occur chain rupture more accurately from force signal and the tach signal of the first power inductor or the second power inductor, has mentioned the accuracy to chain rupture judgement.
Accompanying drawing explanation
To the present invention, be described in more detail based on embodiment and with reference to accompanying drawing hereinafter.Wherein:
Fig. 1 is the structural representation according to chain conveyor of the present invention.
Fig. 2 is the enlarged drawing of up chain breakage protection device.
Fig. 3 is the enlarged drawing of descending chain breakage protection device.
Fig. 4 is the control flow chart of the method according to this invention.
In the accompanying drawings, identical parts are used identical Reference numeral.Accompanying drawing is not according to actual ratio.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 has schematically shown according to chain conveyor 10 of the present invention (being referred to as below conveyer 10).As shown in Figure 1, conveyer 10 comprises chain 11 and the wheels that comprise a plurality of wheels, and wheels are for supporting and chain drive-belt 11.At each chain of chain 11, tie all movable hoppers 12 that is provided with, so that pack material into and realize Self-tipping material in hopper 12.These materials for example can be active carbon.In order to realize convey materials between the position of differing heights, conventionally chain 11 is arranged in vertical direction to " Z " shape, this can realize by suitable layout wheel.As shown in Figure 1, the chain 11 formation closed loop that joins end to end.Drive wheel 13 is arranged on top primary importance, and wheel flutter 14 arranges in height lower than primary importance, and in level, also departs from the second place of primary importance, is also provided with four bend wheels 15 between primary importance and the second place.By the position relationship of drive wheel 13, wheel flutter 14 and four bend wheels 15 and the conter clockwise of drive wheel 13, turn to, chain 11 comprises horizontal segment 16, up section 17 and descending section 18.
Although the chain 11 of this " Z " shape greatly facilitates the conveying of material, up section 17 and descending section 18 of chain 11 all bearing and compared with large application force, is being easy to damage.
Once there is chain rupture for up section 17, up section 17 of chain 11 and the hopper being arranged on up section 17 all can drop on the ground, cause very large destruction.While there is chain rupture for descending section 18, be also like this.For this reason, contriver creatively at up section of 17 region divisions up chain breakage protection device 30 (being referred to as below fender guard 30), at descending section of 18 region divisions descending chain breakage protection device 40 (being referred to as below fender guard 40); Conveyer 10 also comprises the tachometric survey device 50 that detects the rotating speed of each wheel in wheels (being drive wheel 13, wheel flutter 14 and four bend wheels 15), and treater (not shown).The tach signal that treater can send according to tachometric survey device 50 is controlled wheels and is rotated.In one embodiment, on drive wheel 13, wheel flutter 14 and four bend wheels 15, be provided with tachometric survey device 50.
Fender guard 30 can be configured to horizontally disposed hinge type brake rod.When there is chain rupture for up section 17, fender guard 30 can carry or tangle the chain 11 of disconnection, thereby thereby avoids occurring serious consequence.In addition, when there is chain rupture for up section 17, the bend wheel 15 in up section of 17 lower ends can stop operating owing to losing propulsive effort, and at this moment drive wheel 13 is still rotating.The rotating speed that treater can obtain bend wheel 15 is thus less than the signal of the rotating speed of drive wheel 13, and judges thus chain 11 chain rupture has occurred, thereby makes wheels stop operating to avoid pulling the chain of fracture.
Fender guard 40 can have and the similar structure of fender guard 30, and when descending section of 18 chain rupture, the mode of treater is same as described above, repeats no more here.Should be appreciated that, fender guard 30 and fender guard 40 also can be the structure of other types, repeat no more here.
In order to make treater judge more accurately whether chain 11 chain rupture occurs, on fender guard 30, be provided with the first power inductor 31 (as shown in Figure 2), on fender guard 40, be provided with the second power inductor 41 (as shown in Figure 3).The first power inductor 31 can detect the stressing conditions of fender guard 30 and send the first force signal, and the second power inductor 41 can detect the stressing conditions of fender guard 40 and send the second force signal.Take up section 17 as example, when there is chain rupture for up section 17, fender guard 30 can cause due to the material on carrying chain and chain its stressed significantly increase immediately.This stressed variation of fender guard 30 than the rotation speed change of corresponding bend wheel more directly and rapider.Treater comprehensive reference force signal and tach signal can judge whether to occur chain rupture more accurately, have mentioned the accuracy of treater judgement.
As shown in Figure 1, the quantity of up chain breakage protection device 30 is a plurality of and in the vertical direction is spaced apart, and the quantity of descending chain breakage protection device 40 is also a plurality of and in the vertical direction is spaced apart.When chain 11 chain rupture, a plurality of fender guards shield simultaneously, have further improved the Degree of Safety of conveyer 10.
The chain rupture guard method of conveyer 11 is described according to Fig. 1 and Fig. 4 below.
At conveyer 11 on period, tachometric survey device 50 can constantly be measured the rotating speed of drive wheel 13, wheel flutter 14 and four bend wheels 15, and rotary speed data is transferred to treater.The first power inductor 31 and the second power inductor 41 also can constantly detect the stressing conditions on fender guard 30 and fender guard 40, and stress data is transferred to treater.
Treater is compared the rotating speed of wheel flutter 14 and four bend wheels 15 with the rotating speed of drive wheel 13, detect the force signal from the first power inductor 31 and the second power inductor 41 simultaneously.
When the rotating speed of wheel flutter 14 and four bend wheels 15 all mates with the rotating speed of drive wheel 13, and the first power inductor 31 and the second power inductor 41 be not while sending abnormal force signal, and conveyer 10 is in normal working.When in the rotating speed of wheel flutter 14 and four bend wheels 15, any rotating speed does not mate with the rotating speed of drive wheel 13 or in the first power inductor 31 and the second power inductor 41, any sends abnormal force signal, there is chain rupture and wheels stopped operating in treater judgement conveyer 10.
Although invention has been described with reference to preferred embodiment, without departing from the scope of the invention, can carry out various improvement and can replace parts wherein with equivalent it.Especially, only otherwise have structural hazard, every technical characterictic of mentioning in each embodiment all can combine in any way.The present invention is not limited to disclosed specific embodiment in literary composition, but comprises all technical schemes in the scope that falls into claim.