CN88210066U - Automatic turning locomotive headlight - Google Patents

Abstract

The utility model relates to an automatic turning head lamp of a railway locomotive, belonging to an improvement of the head lamp. The utility model is composed of an automatic control system on which closed-loop control is adopted and correction is added and a set of mechanical drive mechanism which is corresponding to the automatic control system. The head lamp provided by the utility model can synchronously turn with the locomotive, and the head lamp can be automatically reset, keeping light illuminate the middle part of a railway rail, and accordingly, the head lamp assures safe operation, being specially suitable for being installed on various railway locomotives.

Description

Automatic turning locomotive headlight

The utility model relates to a kind of head lamp of railway locomotive automatic steering, belongs to the improvement of locomotive head lamp, is particularly suitable for dress usefulness on all kinds of railway locomotives.

Usually the head lamp of railway locomotive all is installed in the front of headstock, when locomotive is kept straight on, just impinging upon in the middle of the rail, guarantee that fully the driver has good sight line, but when locomotive driving arrives bend, because head lamp installs on it and can not turn to synchronously with locomotive, thereby the light offset track is radiated on the roadbed at this moment, makes the driver not see the road surface situation, brings very big difficulty to safe driving, often therefore cause injures and deaths and car accident, the not only normal operation of influence, but also national wealth and personal safety are incurred loss, especially just more outstanding in the highway section of mountain area geographical conditions complexity, drivers are anxious for this reason, and thirst for this problem and solve as early as possible.

The purpose of this utility model is to provide a kind of and can turns to synchronously and keep light to be radiated at the locomotive head lamp of guaranteeing safe in operation in the middle of the rail all the time with locomotive.

The purpose of this utility model realizes that by the following technical solutions it is made up of the mechanical transmission mechanism that head lamp 1, autonomous cruise speed system and a cover adapt with it.Its autonomous cruise speed system comprises that the headlight of following the tracks of the locomotive driving track turns to input pickup, comparator, the preposition amplification and the correction link of signal, the power amplifier of servo amplification and driving DC machine and the feedback transducer that the locomotive headlight turns to, mechanical transmission mechanism is by DC micromotor 6, its the axle with through a pair of gear 7,8 and the deceleration box 11 of worm gear pairs 10 double reductions in input shafts link, one end of driving lever 13 is packed on the end face of worm gear, the other end puts between two slide blocks 12, key seat 9 on the pull bar 3 links with the afterbody of bearing pin and head lamp, the upper end of lamp axis of revolution 2 links with ball pivot and lamp body bottom, and the lower end is packed on the corresponding site of locomotive.

This use is compared with prior art novel, and having can be with turning to about locomotive and automatic steering and resetting, thereby keeps light to guarantee safe in operation in the middle of impinging upon rail all the time, signal is accurate, and dependable performance is simultaneously simple in structure, implement to be beneficial to and to apply easily.

Fig. 1 is an automatic control block diagram of the present utility model.

Fig. 4 is the structural representation of the utility model mechanical driving part.

Fig. 2 is that lamp of the present utility model turns to input pickup installation site structural representation.

Fig. 3 is that lamp of the present utility model turns to input pickup installation site enlarged drawing.

Fig. 5 is the catenation principle figure of motor in S-01-A follow-up system orientation power amplifier in the utility model.

Embodiment of the present utility model is described in conjunction with the accompanying drawings, form by mechanical drive and automatic guidance two parts, its mechanical driving part comprises DC micromotor 6, link by itself and the axle of miniature gears 7 in the deceleration box 11, the big gear wheel 8 that is meshed with it and the worm screw of worm gear pairs 10 are coaxial, one end of driving lever 13 is packed on the end face of worm gear one side, the other end puts between two slide blocks 12 that are packed in pull bar 3 left parts, the two ends of pull bar 3 are by bearing support, key seat 9 on it links with the afterbody of bearing pin and head lamp 1, the upper end of lamp axis of revolution 2 connects on the relevant position that the lower end is packed in locomotive with ball pivot and head lamp 1 bottom mutually; Automatic guidance comprises that partly lamp turns to input pickup, be to adopt two CYG type semiconductor pressure resistance pressure sensors 14,15 are loaded on the both sides of steering order controll block 16 respectively, its steering order controll block is packed in corresponding railway carriage bottom between locomotive one side and preceding two wheels, F-007 type comparator, preamplifier and correction link are the superelevation amplifiers of selecting UHF type band hysteresis anticipatory control for use, and the power amplifier of servo amplification and driving DC machine adopts S-01-A follow-up system orientation power amplifier and is loaded on the solid-state pressure resistance type feedback transducer 4 of CYG type of end both sides, pull bar 3 right angle, 5.Because total system adopts the closed loop control correction up, signal source and feedback signal are all selected high sensitivity semiconductor solid-state piezoresistive transducer for use, and adopt the amplifier of low drift, therefore, the utlity model has signal accurately, control flexibly, reliable characteristics.

When the utility model uses, undertaken by following mode, when locomotive is kept straight on, be loaded on two pressure sensors 14,15 under the car owing to be not under pressure, so its output is the background small signal just, and this moment, coupled feedback pressure sensor 4,5 did not also work, its feedback signal also is a sensor background weak signal, behind comparing element, clean difference signal goes to zero, and promptly amplifier in is zero, owing to select low drift amplifier for use so its output is bordering on zero, therefore servo amplification balance is output as zero, and motor 6 is motionless as a result, and head lamp 1 original position is motionless; But when locomotive sails bend into by craspedodrome, suppose left-hand rotation, owing to be subjected to the effect of centripetal force, steering order controll block 16 gives the contact of left-hand rotation pressure sensor 15 with pressure, this moment, incoming signal surpassed feedback signal, after relatively net signal process in back has the low drift amplifier of the anticipatory control link that lags behind, amplify 20-30 doubly, the prime amplification of sending into servo amplification through preposition amplifying signal is the single-ended input of constant-current source type, both-end output, go to control two pairs of two-way power amplifier switch (forming), make its cornerwise pair of pipes BG4 by multiple unit tube, the BG7 conducting, motor reverses, drive head lamp 1 left-handed turning through mechanical drive pull bar 3, feedback transducer 5 effect of being stressed that meanwhile is connected with head lamp is sent feedback signal, after headlight forwards predetermined angular to, the transducing signal of locomotive and the feedback signal of headlight are almost equal, also be not enough to drive motor after the very little amplification of net signal and be rotated further, then head lamp be parked on the position of left-hand rotation, thereby reach the illumination purpose that the automatic tracking locomotive turns left.When locomotive when left-turning pathways recover to be kept straight on, this moment, left-hand sensor 15 pressure of locomotive reduced, sensor 15 output signals reduce, meanwhile, the feedback sensor 5 that links with head lamp is because of continuing to be subjected to its pressure, so feedback signal surpasses the locomotive operation sensor signal, clean difference signal is anti-phase behind comparator, through preposition amplification, make a pair of BG6 of power amplifier level again, the conducting of BG5 diagonal line power tube is ordered about motor and is just changeed, the head lamp rotation that resets from left to right, along with the rotation that head lamp resets, feedback transducer 5 is stressed and reduces gradually, and its feedback signal also reduces gradually and stops at reset mode at last.

When locomotive bends to right, under the effect of centripetal force, steering order controll block 16 gives the contact of right steering sensor 14 with pressure, this moment incoming signal, after relatively net signal process in back has the low drift amplifier of the anticipatory control link that lags behind, amplify 20-30 doubly, send into the prime of servoamplifier amplifies through preposition amplifying signal, it is the single-ended input both-end output of constant current mode, through emitter-follower output, go to control two pairs of two-way power amplifier switch again, make its cornerwise pair of pipes BG5 in addition, the BG6 conducting, motor just changes, by transmission device make headlight in company with the locomotive right-hand turning to, the feedback transducer 4 that meanwhile links to each other with headlight works, and sends feedback signal, after headlight forwards predetermined angular to, the transducing signal and the feedback signal of locomotive are almost equal, and net signal is very little, can not be rotated further by drive motor after the amplification again, so headlight is parked on the position of right-hand rotation, thus automatic reposition when reaching illumination purpose that the automatic tracking locomotive turns right and enter craspedodrome along with locomotive.

Claims (1)

1, a kind of head lamp of railway locomotive automatic steering, formed by the mechanical transmission mechanism that head lamp 1, autonomous cruise speed system and a cover adapt with it, it is characterized in that autonomous cruise speed system comprises that the headlight of following the tracks of the locomotive driving track turns to input pickup, comparator, the preposition amplification of signal and correction link, servo amplification and the power amplifier of driving DC machine and the feedback transducer that the locomotive headlight turns to; Described transmission device is by DC micromotor 6, it links with input shaft in the deceleration box 11 of a pair of gear 7,8 and worm gear pairs 10 double reductions, one end of driving lever 13 is packed on the end face of worm gear, the other end puts between two shifting blocks 12, key seat 9 on the pull bar 3 links with the afterbody of bearing pin and head lamp 1, lamp axis of revolution 2 upper ends link with the bottom of ball pivot and lamp body, and the other end is packed on the corresponding site of locomotive.

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