CN105128680B - Three-freedom-degree hybrid formula pantograph - Google Patents

Three-freedom-degree hybrid formula pantograph Download PDF

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Publication number
CN105128680B
CN105128680B CN201510676263.9A CN201510676263A CN105128680B CN 105128680 B CN105128680 B CN 105128680B CN 201510676263 A CN201510676263 A CN 201510676263A CN 105128680 B CN105128680 B CN 105128680B
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bow
revolute pair
cylinder
rod
chain
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CN105128680A (en
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孟菖蒲
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China University of Mining and Technology Beijing CUMTB
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China University of Mining and Technology Beijing CUMTB
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Abstract

The invention discloses a kind of Three-freedom-degree hybrid formula pantograph, including base, rising bow mechanism in parallel, bow shock absorber and bow slide plate.Provided with supports insulative on four angles below described base;The bottom of rising bow mechanism in parallel is arranged on base;Described bow shock absorber has four groups, and is symmetrically fixed on the top of rising bow mechanism in parallel, the longitudinal damping for realizing pantograph;Described bow slide plate is fixed on the top of bow shock absorber by safety screw, and is provided with safety groove in the light bar segment of described safety screw, for protecting pantograph body and contact net.The present invention can overcome the technological deficiency of existing pantograph, carrying and the vibration damping in space three degree of freedom direction can not only be realized, de- bow can also be avoided and the generation of the security incidents such as net is scraped, job stability, security and the adaptability to contact net of pantograph are improved, has the advantages that simple in construction, easy for installation, Operation and Maintenance is convenient.

Description

Three-freedom-degree hybrid formula pantograph
Technical field
The present invention relates to the electrical equipment of a kind of electric rail car or locomotive operation, more particularly to a kind of three, space is certainly By the Three-freedom-degree hybrid formula pantograph for spending direction energy vibration damping.
Background technology
Pantograph is also referred to as bow collector, be electric locomotive from contact net by power taking can electrical equipment, on roof.By Pantograph is as one of critical component of electric locomotive, and the high-speed secure stable operation to vehicle plays key effect.In bullet train In driving, require very high for the smooth degree between pantograph and contact net, slightly mistake, be easy for breaking down.Especially It is in the operation of EMUs and subway train, to obtain electric power from contact net by pantograph, driving machine Chinese herbaceous peony is entered, once Both depart from, and locomotive will be powered off and out of hand, it could even be possible to causing train to derail.
Pantograph used in current electric locomotive can be divided into double-arm, single arm type, the rectilinear and major class of stone Tianjin formula four.Its In, double-arm pantograph is also known as " water chestnut " shape pantograph, but existing because cost of upkeep is higher, there is the wind for pulling apart contact line when adding failure Danger, the rolling stock that part is newly dispatched from the factory at present, has used single arm type pantograph instead;Also there is partial railcar (such as the Shinkansen 300 Family car) from original double-arm pantograph, it transform single arm type pantograph as.Most be " it " (Z) (>) font by Pantograph, its advantage is more relatively low than double-arm pantograph noise, is also less susceptible to pull apart contact line during failure, be at present it is more universal by Pantograph type.Rectilinear pantograph is also known as " T " font and (is also called wing) pantograph, and the characteristic of its low windage is relatively adapted to row at a high speed Sail, to reduce noise during driving, be mainly used in high-speed railway vehicle.But it is due to that cost is higher, rectilinear pantograph is Do not use and (single arm type pantograph is changed to by rectilinear pantograph when modern architecture in Japan 500 is transformation).Stone Tianjin formula pantograph is It is auxiliary in nineteen fifty-one invention by the 6th generation president, the Shi Jinlong of Japanese Okayama electric tracks, it is also known as " ridge electric-type ", " ridge rail Formula ".In addition to double-arm, the pantograph of other structures all uses series-mode frame.
Accident between pantograph accounts for 80% or so of total accident in electric railway power failure, stoppage in transit accident, every year due to accident between pantograph It is considerable that the economic loss caused, which is calculated,.The bow that the pantograph used at present is caused scrapes net or net is scraped the accident of bow and compared Seriously.Show as, gently then scrape disconnected one and hang device for carrying a tripot and destroy pantograph contact strip, heavy then scrape disconnected contact line conducting wire, carrier cable, branch Post is toppled over, and motorcycle pantograph is damaged completely, and contact net has a power failure, and cuts off traffic.If it is special at some that all these accidents occur Under the conditions of territorial environment, it will bring many difficult and dangerous to repairing.In recent years, for accident between pantograph, although from pantograph All improve to some extent to contact net, improve Technical properties of plant from management, accident between pantograph has certain decline, but by In the intrinsic scarce limit in pantograph structure, do not solve the above problems fundamentally.
The phase interaction that the pantograph of electric locomotive is depended primarily between pantograph and contact net with the current carrying quality of contact line With.To ensure the smooth circulation of traction current, there must be certain contact between pantograph and contact line.Bow net contact pressure If power is too small, ratio of contact loss can be increased;If too big, it can make to produce larger mechanical wear between slide plate and contact line.Bow net is real Border contact is made up of four parts:Pantograph bow-lifting device puts on slide plate, and the vertical force for being allowed to upward is Static Contact pressure Power;Because contact suspension has elastic difference in itself, contact line can produce different degrees of rising under pantograph lifting effect, So that pantograph produces up-down vibration in operation, pantograph is set to produce a related friendship up and down of normalized wave function with itself The dynamic touch pressure of change;Pantograph is acted on the gas that one produced increases and increased sharply with speed by air stream in operation Power;The damping force that each joint of pantograph is produced during lifting bow.In addition, electric locomotive is in the process of running such as crosswind, Larger side force can be also produced to pantograph.
Traditional pantograph is limited by inherent structure form, and bow is based on the motion of vertical direction, only in vertical direction Upper setting pretightning force and the buffer unit for vibration damping, and in other directions without vibration absorber.In addition, existing pantograph does not have There is setting bow separator, when generation bow net is mutually scraped, the scraper plate on bow can not be disengaged, and this is easily caused bow net and mutually scrapes thing Therefore.Not only structural stability is poor for existing pantograph, and seldom considers safeguard measure when lateral force is mutually scraped with bow net, deposits In certain potential safety hazard.
For existing pantograph freedom of motion and damping property it is not enough in terms of the problem of, existing patent document it is also proposed that Some solutions, the Chinese patent of such as Application No. 201410409208.9 disclose a kind of Three-freedom-degree hybrid vibration damping by Pantograph, including the electric drive and transmission system being fixed on base, and bow, in addition to lateral damper, support frame in parallel and vertical To shock absorber, provided with four lateral dampers on base, at the top of support frame in parallel provided with four longitudinal shock absorbers, bow Separator is provided with, carrying and the vibration damping in space three degree of freedom direction can be realized, de- bow can be also avoided and scrape the safe things such as net Therefore generation, improve the structural stability and the adaptability to contact net of pantograph, but its structure is excessively complicated, control inconvenience, Cost is higher;The Chinese patent of Application No. 201410409246.4 discloses a kind of Three Degree Of Freedom based on two-in-parallel mechanism and mixed Join pantograph, including base, two-in-parallel support frame, longitudinal shock absorber, safe bearing pin, slide plate pillar and slide plate, on middle connecting plate Provided with two groups of longitudinal shock absorbers, safe bearing pin is provided between guiding trestle and slide plate, the invention can realize three, space freedom Carrying and the vibration damping in direction are spent, the adaptability to contact net is preferable, but it requires higher to the accuracy of manufacture, and control inconvenience, into This is higher.
Support and lowering or hoisting gear of a kind of use hybrid mechanism of the present invention as pantograph pan, make bow slide plate Have two, space movement one is independent to rotate totally three freedoms of motion, and with subtracting on above three free degree direction Shake function, and there is quick rising bow, quick off-grid, the technological deficiency that existing pantograph can be overcome to exist.
The content of the invention
The purpose of the present invention can be subtracted on the direction of three, space there is provided one kind for the not enough of existing pantograph technology The Three-freedom-degree hybrid formula pantograph shaken.The technical problems to be solved by the invention are realized using following technical scheme.
A kind of Three-freedom-degree hybrid formula pantograph, including base and bow slide plate, in addition to rising bow mechanism in parallel and bow Shock absorber.Wherein, provided with supports insulative on four angles below described base;The bottom of described rising bow mechanism in parallel On base;Described bow shock absorber has four groups, and is symmetrically fixed on the top of rising bow mechanism in parallel, for realize by The longitudinal damping of pantograph;Described bow slide plate is fixed on the top of bow shock absorber by safety screw.
Described rising bow mechanism in parallel is mainly used in support bow shock absorber and bow slide plate, and realizes the liter of bow slide plate Drop and net-fault, off-grid function.Described rising bow mechanism in parallel include preceding rising bow side chain, rear rising bow side chain, snap action cylinder and Middle connecting plate.Wherein, described preceding rising bow side chain, rear rising bow side chain structure it is identical, and be arranged symmetrically in base and middle company Between plate;The lower end of described preceding rising bow side chain is connected with base by the first revolute pair, and the upper end of preceding rising bow side chain is with Connecting plate is connected by the 4th revolute pair;The lower end of described rear rising bow side chain is connected with base by the 5th revolute pair, after Parafacies is moved by eighth-turn with middle connecting plate and is connected in the upper end of rising bow side chain;Described snap action cylinder be located at middle connecting plate just under Side, for realize the fast lifting of bow slide plate with it is quick touch net, off-grid function, the front end of described snap action cylinder is with before Rising bow side chain is connected by the 9th revolute pair, and the rear end of described snap action cylinder is rotated with rear rising bow side chain by the tenth Parafacies is connected;Described middle connecting plate is located at preceding rising bow side chain, the top of rear rising bow side chain, for connecting preceding rising bow side chain, rear liter Bend side chain, and bow shock absorber is installed, and provided with square fabrication hole on described middle connecting plate.
Described preceding rising bow side chain includes front support ear mount, front stretching cylinder, preamble axle, front air cylinder connecting rod, preceding vibration damping Spring and sinciput connecting rod.Wherein, the quantity of described front support ear mount, front stretching cylinder and sinciput connecting rod is two, described The quantity of preceding shock-absorbing spring is four;Described front support ear mount is fixedly connected with by screw with base;Described front stretching cylinder Lower end is connected with front support ear mount by the first revolute pair, and the upper end of described front stretching cylinder passes through second with preamble axle Revolute pair is connected;Described front air cylinder connecting rod is located between two front stretching cylinders, and is connected with front stretching cylinder;Described Preceding shock-absorbing spring is enclosed on preamble axle, and is arranged symmetrically in the upper end both sides of front stretching cylinder;Under described sinciput connecting rod End is connected with preamble axle by the 3rd revolute pair, and the upper end of sinciput connecting rod is connected with middle connecting plate by the 4th revolute pair; Strengthen cable wire provided with preceding between two sinciput connecting rods.
Described rear rising bow side chain includes rear support ear mount, rear telescopic cylinder, rear synchronizing shaft, exhaust hood connecting rod, rear vibration damping Spring and rear top connecting rod, described rear support ear mount, rear telescopic cylinder and the rear quantity for pushing up connecting rod is two, described rear vibration damping The quantity of spring is four;Described rear support ear mount is fixedly connected with by screw with base;The lower end of described rear telescopic cylinder with Rear support ear mount is connected by the 5th revolute pair, and the upper end of described rear telescopic cylinder passes through the 6th revolute pair with rear synchronizing shaft It is connected;Described exhaust hood connecting rod is located at after two between telescopic cylinder, and is connected with rear telescopic cylinder;Described rear vibration damping Spring housing is arranged symmetrically in the upper end both sides of rear telescopic cylinder on rear synchronizing shaft;The lower end of described rear top connecting rod is with after Synchronizing shaft is connected by the 7th revolute pair, and the upper end of rear top connecting rod is moved parafacies by eighth-turn with middle connecting plate and is connected;At two Strengthen cable wire after being provided with afterwards between the connecting rod of top.
The front end of described snap action cylinder is connected with front air cylinder connecting rod by the 9th revolute pair, snap action cylinder Rear end be connected with exhaust hood connecting rod by the tenth revolute pair.
Described front stretching cylinder, rear telescopic cylinder use two-stage or three-level telescopic cylinder, are mainly used in realizing liter in parallel Bend the vertical lift and vibration-damping function in vertical direction of mechanism;Described snap action cylinder uses double-acting cylinder, It is mainly used in realizing the Rapid contact between bow slide plate and contact net with separating.
The first revolute pair, the second revolute pair, the 3rd revolute pair, the 4th revolute pair in described rising bow mechanism in parallel, Five revolute pairs, the 6th revolute pair, the 7th revolute pair, the 8th revolute pair axis it is parallel, described the 9th revolute pair, the tenth turn Move secondary axis to be parallel to each other, described front stretching cylinder, the axis of rear telescopic cylinder are perpendicular to the axis of the first revolute pair, institute Axis of the axis for the snap action cylinder stated perpendicular to the 9th revolute pair.
Described bow shock absorber includes vibration damping holder, vibration damping axle, left-handed torsion spring, dextrorotation torsion spring, the gentle bullet of arch head bracket Spring.Wherein, described vibration damping holder is fixedly connected with middle connecting plate, is mainly used in supporting vibration damping axle, while being turned round to left-handed torsion spring, dextrorotation Play fixed and position-limiting action in the outer end of spring;The two ends of described vibration damping axle are fixedly mounted in vibration damping holder;Described bow branch Frame is used to support bow slide plate, and the lower end of described arch head bracket is enclosed on vibration damping axle, upper end and the bow slide plate of arch head bracket It is connected by safety screw;Described left-handed torsion spring, dextrorotation torsion spring set are arranged symmetrically in arch head bracket on vibration damping axle Both sides, play damping and cushioning effect for the swing to bow slide plate and arch head bracket around vibration damping axle;Described gas bullet Spring is located between former and later two arch head brackets, and is connected with arch head bracket by hinge, and described gas spring is used for bow Slide plate and arch head bracket play damping, cushioning effect around the swing of vibration damping axle, and the also motion to former and later two bow slide plates rises Link effect of contraction.
Described safety screw includes head of screw, light bar segment and thread segment.Wherein, light bar segment is located at head of screw and thread segment Between, safety groove is provided with described light bar segment, described safety groove is located at the middle and upper part of light bar segment, and close to head of screw. When the resistance of motion between bow slide plate and contact net exceedes the safety value of setting, safety screw is broken at safety groove, is used In protection pantograph body and contact net, serious accident to avoid.
Described rising bow mechanism in parallel uses { 2RPRPRR-RPR } structure, and totally three fortune is rotated with two translations one The dynamic free degree.Rising bow mechanism in parallel together form the series-parallel connection machine that a structure is { 2RPRPRR-RPR }-R with bow shock absorber Structure, i.e., connect a revolute pair R on the basis of parallel institution { 2RPRPRR-RPR }.Wherein, preceding rising bow side chain, rear rising bow branch The structure of chain is { 2RPRPRR }, and front air cylinder connecting rod, snap action cylinder and exhaust hood connecting rod constitute { RPR } structure Middle pole;Bow shock absorber constitutes a revolute pair { R }, and symbol R represents revolute pair, and symbol P represents prismatic pair.Due to bow The revolute pair that head shock absorber is constituted is same rotational freedom with the rotation produced by rising bow mechanism { 2RPRPRR-RPR } in parallel, { 2RPRPRR-RPR } mechanism after series-parallel connection remains as two translations one and rotates Three Degree Of Freedom mechanism, can produce vertically, it is parallel In the movement of the axis direction of vibration damping axle, and the axis direction around vibration damping axle rotation totally three freedoms of motion.
The present invention is placed in the top of electric rail car or locomotive, and its course of work is:After vehicle pull-in, in rising bow mechanism in parallel Front stretching cylinder, rear telescopic cylinder synchronously extend, connecting plate and bow slide plate above middle connecting plate rise in drive, After bow slide plate is close to grid height, front stretching cylinder, rear telescopic cylinder stop elongation.Then, snap action cylinder shortens, And then connecting plate rises in driving, and to realize the secondary rapid increase of bow slide plate, bow slide plate is effectively contacted and is reached with power network To setting pretightning force, net-fault task is completed.When needing to perform bow net separation task, first start snap action cylinder, make quick Active cylinder extends, and bow slide plate is rapidly separated with power network.Then, then drive front stretching cylinder in rising bow mechanism in parallel, Telescopic cylinder synchronously shortens afterwards, pantograph height reduction, and pantograph completes one-stop operation.
The beneficial effects of the invention are as follows compared with prior art, the present invention uses { 2RPRPRR-RPR }-R hybrid connected structures Rising bow mechanism in parallel and bow shock absorber substitute traditional pantograph cascaded structure linked hoisting mechanism, there is bow The translation of space two one rotates totally three freedoms of motion, mainly realizes lifting, carrying and vibration-damping function of the bow in vertical direction, Horizontal side force can also be being born simultaneously, in vertical direction, longitudinal direction and around the rotation three degree of freedom direction of vibration damping axle axis Effective vibration damping is provided;The setting of safety screw can also avoid de- bow and scrape the generation of the security incidents such as net, improve the knot of pantograph Structure stability and the adaptability to contact net, also have the advantages that stable and reliable in work, Operation and Maintenance is convenient.
Brief description of the drawings
Fig. 1 is general structure schematic diagram of the invention;
Fig. 2 is the structural representation of the rising bow mechanism in parallel of the present invention;
Fig. 3 is the mechanism principle schematic diagram of the rising bow mechanism in parallel of the present invention;
Fig. 4 is the structural representation of the bow shock absorber of the present invention;
Fig. 5 is the structural representation of the safety screw of the present invention.
Embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, below In conjunction with specific embodiments and diagram, the present invention is expanded on further.
As shown in Figure 1 and Figure 4, a kind of Three-freedom-degree hybrid formula pantograph, including base 1, rising bow mechanism 2 in parallel, bow Shock absorber 3 and bow slide plate 4.Wherein, supports insulative 11 is provided with four angles below described base 1;It is described and The bottom for joining rising bow mechanism 2 is arranged on base 1;Described bow shock absorber 3 has four groups, and is symmetrically fixed on rising bow machine in parallel The top of structure 2, the longitudinal damping for realizing pantograph;Described bow slide plate 4 is fixed on bow vibration damping by safety screw 5 The top of device 3.
As shown in Figure 1, Figure 2 and Figure 3, described rising bow mechanism 2 in parallel is mainly used in support bow shock absorber 3 and bow is slided Plate 4, and realize lifting and net-fault, the off-grid function of bow slide plate 4.Described rising bow mechanism 2 in parallel include preceding rising bow side chain 21, Rising bow side chain 22, snap action cylinder 23 and middle connecting plate 24 afterwards.Wherein, described preceding rising bow side chain 21, rear rising bow side chain 22 Structure is identical, and is arranged symmetrically between base 1 and middle connecting plate 24;The lower end of described preceding rising bow side chain 21 and base 1 It is connected by the first revolute pair 210, the upper end of preceding rising bow side chain 21 is connected with middle connecting plate 24 by the 4th revolute pair 219; The lower end of described rear rising bow side chain 22 is connected with base 1 by the 5th revolute pair 220, and the upper end of rear rising bow side chain 22 is with Connecting plate 24 is connected by the 8th revolute pair 229;Described snap action cylinder 23 is located at the underface of middle connecting plate 24, for reality The fast lifting of existing bow slide plate 4 with it is quick touch net, off-grid function, the front end of described snap action cylinder 23 and preceding rising bow branch Chain 21 is connected by the 9th revolute pair 231, and the rear end of described snap action cylinder 23 passes through the tenth with rear rising bow side chain 22 Revolute pair 232 is connected;Described middle connecting plate 24 is located at preceding rising bow side chain 21, the top of rear rising bow side chain 22, before connection Rising bow side chain 21, rear rising bow side chain 22, and bow shock absorber 3 is installed, and provided with square technique on described middle connecting plate 24 Hole 241.
As shown in Figure 1, Figure 2 and Figure 3, described preceding rising bow side chain 21 include front support ear mount 211, front stretching cylinder 212, Preamble axle 213, front air cylinder connecting rod 214, preceding shock-absorbing spring 215 and sinciput connecting rod 216.Wherein, described front support ear mount 211st, the quantity of front stretching cylinder 212 and sinciput connecting rod 216 is two, and the quantity of described preceding shock-absorbing spring 215 is four;It is described Front support ear mount 211 be fixedly connected with by screw with base 1;The lower end of described front stretching cylinder 212 and front support ear mount 211 It is connected by the first revolute pair 210, the upper end of described front stretching cylinder 212 passes through the second revolute pair with preamble axle 213 217 are connected;Described front air cylinder connecting rod 214 is located between two front stretching cylinders 212, and is connected with front stretching cylinder 212; Described preceding shock-absorbing spring 215 is enclosed on preamble axle 213, and is arranged symmetrically in the upper end both sides of front stretching cylinder 212;It is described The lower end of sinciput connecting rod 216 be connected with preamble axle 213 by the 3rd revolute pair 218, the upper end of sinciput connecting rod 216 is with Connecting plate 24 is connected by the 4th revolute pair 219;Strengthen cable wire 2161 provided with preceding between two sinciput connecting rods 216.
As shown in Figure 1, Figure 2 and Figure 3, described rear rising bow side chain 22 include rear support ear mount 221, rear telescopic cylinder 222, Synchronizing shaft 223, exhaust hood connecting rod 224, rear shock-absorbing spring 225 and rear top connecting rod 226 afterwards, described rear support ear mount 221, after stretch The quantity of contracting cylinder 222 and rear top connecting rod 226 is two, and the quantity of described rear shock-absorbing spring 225 is four;Described rear support Ear mount 221 is fixedly connected with by screw with base 1;The lower end of described rear telescopic cylinder 222 passes through the 5th with rear support ear mount 221 Revolute pair 220 is connected, and the upper end of described rear telescopic cylinder 222 is connected with rear synchronizing shaft 223 by the 6th revolute pair 227 Connect;Described exhaust hood connecting rod 224 is located at after two between telescopic cylinder 222, and is connected with rear telescopic cylinder 222;Described Shock-absorbing spring 225 is enclosed on rear synchronizing shaft 223 afterwards, and is arranged symmetrically in the upper end both sides of rear telescopic cylinder 222;Described rear top The lower end of connecting rod 226 is connected with rear synchronizing shaft 223 by the 7th revolute pair 228, the upper end of rear top connecting rod 226 and middle connecting plate 24 It is connected by the 8th revolute pair 229;Strengthen cable wire 2261 after being provided with after two between the connecting rod 226 of top.
As shown in Figure 1, Figure 2 and Figure 3, the front end of described snap action cylinder 23 passes through the 9th with front air cylinder connecting rod 214 Revolute pair 231 is connected, and the rear end of snap action cylinder 23 is connected with exhaust hood connecting rod 224 by the tenth revolute pair 232.
As shown in Figure 1, Figure 2 and Figure 3, described front stretching cylinder 212, rear telescopic cylinder 222 are stretched using two-stage or three-level Contracting cylinder, is mainly used in realizing the vertical lift and vibration-damping function in vertical direction of rising bow mechanism 2 in parallel;Described is fast Fast active cylinder 23 uses double-acting cylinder, is mainly used in realizing the Rapid contact between bow slide plate 4 and contact net with separating.
As shown in Figure 1, Figure 2 and Figure 3, in described rising bow mechanism 2 in parallel the first revolute pair 210, the second revolute pair 217th, the 3rd revolute pair 218, the 4th revolute pair 219, the 5th revolute pair 220, the 6th revolute pair 227, the 7th revolute pair 228, The axis of eight revolute pairs 229 is parallel, and described the 9th revolute pair 231, the axis of the tenth revolute pair 232 are parallel to each other, described Front stretching cylinder 212, the axis of rear telescopic cylinder 222 is perpendicular to the axis of the first revolute pair 210, described snap action gas Axis of the axis of cylinder 23 perpendicular to the 9th revolute pair 231.
As shown in Figure 1 and Figure 4, described bow shock absorber 3 includes vibration damping holder 31, vibration damping axle 32, left-handed torsion spring 33, the right side The gentle spring 36 of turn-knob spring 34, arch head bracket 35.Wherein, described vibration damping holder 31 is fixedly connected with middle connecting plate 24, is mainly used in Vibration damping axle 32 is supported, while playing fixed and position-limiting action to the outer end of left-handed torsion spring 33, dextrorotation torsion spring 34;Described vibration damping axle 32 Two ends be fixedly mounted in vibration damping holder 31;Described arch head bracket 35 is used to support bow slide plate 4, described arch head bracket 35 lower end is enclosed on vibration damping axle 32, and the upper end of arch head bracket 35 is connected with bow slide plate 4 by safety screw 5;Described Left-handed torsion spring 33, dextrorotation torsion spring 34 are sleeved on vibration damping axle 32, and are arranged symmetrically in the both sides of arch head bracket 35, for bow Slide plate 4 and arch head bracket 35 play damping and cushioning effect around the swing of vibration damping axle 32;Described gas spring 36 is located at front and rear Between two arch head brackets 35, and it is connected with arch head bracket 35 by hinge, described gas spring 36 is used for bow slide plate 4 And arch head bracket 35 plays damping, cushioning effect around the swing of vibration damping axle 32, the also motion to former and later two bow slide plates 4 rises Link effect of contraction.
As shown in figure 5, described safety screw 5 includes head of screw 51, light bar segment 52 and thread segment 54.Wherein, light bar segment 52 are located between head of screw 51 and thread segment 54, and safety groove 53, described safety groove 53 are provided with described light bar segment 52 In the middle and upper part of light bar segment 52, and close to head of screw 51.When the resistance of motion between bow slide plate 4 and contact net exceedes setting During safety value, safety screw 5 is broken at safety groove 53, for protecting pantograph body and contact net, to avoid great peace Full accident.
Described rising bow mechanism 2 in parallel uses { 2RPRPRR-RPR } structure, and totally three fortune is rotated with two translations one The dynamic free degree.Rising bow mechanism 2 in parallel together form the series-parallel connection that a structure is { 2RPRPRR-RPR }-R with bow shock absorber 3 Mechanism, i.e., connect a revolute pair R on the basis of parallel institution { 2RPRPRR-RPR }.Wherein, preceding rising bow side chain 21, rear liter The structure for bending side chain 22 is { 2RPRPRR }, and front air cylinder connecting rod 214, snap action cylinder 23 are constituted with exhaust hood connecting rod 224 The middle pole of { RPR } structure;Bow shock absorber 3 constitutes a revolute pair { R }, and symbol R represents revolute pair, symbol P tables Show prismatic pair.By in parallel rising bow mechanism 2 of the revolute pair with structure by { 2RPRPRR-RPR } that bow shock absorber 3 is constituted is produced Raw rotation is same rotational freedom, and { 2RPRPRR-RPR } mechanism after series-parallel connection remains as two translations one and rotates Three Degree Of Freedom Mechanism, can produce vertically, parallel to vibration damping axle 32 axis direction movement, and around the axis direction of vibration damping axle 32 Rotation totally three freedoms of motion.
The present invention is placed in the top of electric rail car or locomotive, and its course of work is:After vehicle pull-in, rising bow mechanism 2 in parallel In front stretching cylinder 212, the synchronous elongation of rear telescopic cylinder 222, connecting plate 24 and installed in the middle top of connecting plate 24 in drive Bow slide plate 4 rises, after bow slide plate 4 is close to grid height, and front stretching cylinder 212, rear telescopic cylinder 222 stop elongation. Then, snap action cylinder 23 shortens, and then connecting plate 24 rises in driving, to realize the secondary rapid increase of bow slide plate 4, makes Bow slide plate 4 effectively contacts with power network and reaches setting pretightning force, completes net-fault task.Task is separated when needing execution bow net When, first start snap action cylinder 23, extend snap action cylinder 23, bow slide plate 4 is rapidly separated with power network.Then, Drive the front stretching cylinder 212 in rising bow mechanism 2 in parallel, rear telescopic cylinder 222 are synchronous to shorten again, pantograph height reduction, by Pantograph completes one-stop operation.
The basic principles, principal features and advantages of the present invention have been shown and described above.The technical staff of the industry should Understand, the present invention is not limited to the above embodiments, the original for simply illustrating the present invention described in above-described embodiment and specification Reason, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes and improvements Both fall within the scope of protection of present invention.The claimed scope of the invention is by appended claims and its equivalent circle It is fixed.

Claims (3)

1. a kind of Three-freedom-degree hybrid formula pantograph, including base and bow slide plate, it is characterised in that:Also include rising bow machine in parallel Structure and bow shock absorber, provided with supports insulative on four angles below described base;Described rising bow mechanism in parallel Bottom is arranged on base;Described bow shock absorber has four groups, and is symmetrically fixed on the top of rising bow mechanism in parallel;Described Bow slide plate is fixed on the top of bow shock absorber by safety screw;
Described rising bow mechanism in parallel include preceding rising bow side chain, rear rising bow side chain, snap action cylinder and middle connecting plate, it is described before Rising bow side chain, rear rising bow side chain structure it is identical, and be arranged symmetrically between base and middle connecting plate;Described preceding rising bow branch The lower end of chain is connected with base by the first revolute pair, and the upper end of preceding rising bow side chain is connected with middle connecting plate by the 4th revolute pair Connect;The lower end of described rear rising bow side chain is connected with base by the 5th revolute pair, upper end and the middle connecting plate of rear rising bow side chain Parafacies is moved by eighth-turn to connect;Described snap action cylinder is located at the underface of middle connecting plate, described snap action cylinder Front end be connected with preceding rising bow side chain by the 9th revolute pair, rear end and the rear rising bow side chain of described snap action cylinder lead to The tenth revolute pair is crossed to be connected;Described middle connecting plate is located at preceding rising bow side chain, the top of rear rising bow side chain, and connects in described Plate is provided with square fabrication hole;
Described preceding rising bow side chain includes front support ear mount, front stretching cylinder, preamble axle, front air cylinder connecting rod, preceding shock-absorbing spring With sinciput connecting rod, the quantity of described front support ear mount, front stretching cylinder and sinciput connecting rod is two, described preceding shock-absorbing spring Quantity be four;Described front support ear mount is fixedly connected with by screw with base;The lower end of described front stretching cylinder and preceding branch Support ear mount is connected by the first revolute pair, and the upper end of described front stretching cylinder is connected with preamble axle by the second revolute pair Connect;Described front air cylinder connecting rod is located between two front stretching cylinders, and is connected with front stretching cylinder;Described preceding shock-absorbing spring It is enclosed on preamble axle, and is arranged symmetrically in the upper end both sides of front stretching cylinder;The lower end of described sinciput connecting rod and preamble Axle is connected by the 3rd revolute pair, and the upper end of sinciput connecting rod is connected with middle connecting plate by the 4th revolute pair;In two sinciputs Strengthen cable wire provided with preceding between connecting rod;
Described rear rising bow side chain includes rear support ear mount, rear telescopic cylinder, rear synchronizing shaft, exhaust hood connecting rod, rear shock-absorbing spring With rear top connecting rod, described rear support ear mount, rear telescopic cylinder and the rear quantity for pushing up connecting rod is two, described rear shock-absorbing spring Quantity be four;Described rear support ear mount is fixedly connected with by screw with base;The lower end of described rear telescopic cylinder and rear branch Support ear mount is connected by the 5th revolute pair, and the upper end of described rear telescopic cylinder is connected with rear synchronizing shaft by the 6th revolute pair Connect;Described exhaust hood connecting rod is located at after two between telescopic cylinder, and is connected with rear telescopic cylinder;Described rear shock-absorbing spring It is enclosed on rear synchronizing shaft, and is arranged symmetrically in the upper end both sides of rear telescopic cylinder;The lower end of described rear top connecting rod with it is rear synchronous Axle is connected by the 7th revolute pair, and the upper end of rear top connecting rod is moved parafacies by eighth-turn with middle connecting plate and is connected;Pushed up after two Strengthen cable wire after being provided between connecting rod;
The front end of described snap action cylinder is connected with front air cylinder connecting rod by the 9th revolute pair, after snap action cylinder End is connected with exhaust hood connecting rod by the tenth revolute pair;
Described front stretching cylinder, rear telescopic cylinder use two-stage or three-level telescopic cylinder;Described snap action cylinder is used Double-acting cylinder.
2. Three-freedom-degree hybrid formula pantograph according to claim 1, it is characterised in that:Described bow shock absorber includes Vibration damping holder, vibration damping axle, left-handed torsion spring, dextrorotation torsion spring, the gentle spring of arch head bracket, described vibration damping holder and middle connecting plate are mutually solid Even;The two ends of described vibration damping axle are fixedly mounted in vibration damping holder;The lower end of described arch head bracket is enclosed on vibration damping axle, bow The upper end of head bracket is connected with bow slide plate by safety screw;Described left-handed torsion spring, dextrorotation torsion spring set are mounted in vibration damping axle On, and it is arranged symmetrically in the both sides of arch head bracket;Described gas spring be located at former and later two arch head brackets between, and with bow branch Frame is connected by hinge.
3. Three-freedom-degree hybrid formula pantograph according to claim 1, it is characterised in that:In described rising bow mechanism in parallel The first revolute pair, the second revolute pair, the 3rd revolute pair, the 4th revolute pair, the 5th revolute pair, the 6th revolute pair, the 7th rotate The axis of secondary, the 8th revolute pair is parallel, and described the 9th revolute pair, the axis of the tenth revolute pair are parallel to each other, it is described before Telescopic cylinder, the axis of rear telescopic cylinder are perpendicular to the axis of the first revolute pair, and the axis of described snap action cylinder is vertical In the axis of the 9th revolute pair.
CN201510676263.9A 2015-10-19 2015-10-19 Three-freedom-degree hybrid formula pantograph Expired - Fee Related CN105128680B (en)

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CN105383307B (en) * 2015-12-14 2017-10-27 北京赛德高科铁道电气科技有限责任公司 A kind of city rail vehicle pantograph multiple degrees of freedom bow
CN109017393B (en) * 2018-08-08 2020-07-03 江苏万帮德和新能源科技股份有限公司 Pressure conduction mechanism and charging bow
AT523329B1 (en) * 2019-12-17 2021-10-15 Siemens Mobility Austria Gmbh Rocker for a vehicle pantograph
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