CN104494647A - Electric-hydraulic switch machine - Google Patents
Electric-hydraulic switch machine Download PDFInfo
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- CN104494647A CN104494647A CN201410800236.3A CN201410800236A CN104494647A CN 104494647 A CN104494647 A CN 104494647A CN 201410800236 A CN201410800236 A CN 201410800236A CN 104494647 A CN104494647 A CN 104494647A
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Abstract
The invention discloses an electric-hydraulic switch machine which comprises a hydraulic power unit and multiple switch units. Each switch unit comprises a switch locking mechanism which comprises an oil cylinder, the oil cylinders of the switch units are serially connected and are equal in volume, and the hydraulic power unit drives the oil cylinders to act synchronously. Through a designing mode that the oil cylinders of the switch units are serially connected and equal in volume, synchronous switching of multiple rail junction traction points is realized, and the electric-hydraulic switch machine is quick in switching, high in synchronicity, suitable for switching, locking and indicating of various rail junctions and especially suitable for high-speed rail junctions.
Description
Technical field
The present invention relates to railway art, particularly relate to a kind of electrohydraulic point machine.
Background technology
Along with railway transportation is to heavy duty, high speed future development, more and more higher to the reliability requirement of switch machine.Domestic existing switching device mainly contains the switch machine of electronic and electric liquid two kinds of standards, wherein, electric switch machine mainly exist conversion power export unstable, not easily adjust, mechanical wear is large, use control equipment many, invest and the problem such as large that consumes energy; And there is the problems such as conversion synchronization difference when adopting main and submachine mode to draw in existing electrohydraulic switch machine.
Therefore, it is good to found a kind of conversion synchronization, is both applicable to domestic high density, heavy duty, is applicable to again the new electrohydraulic point machine that high speed feature requires simultaneously, becomes the target that current industry pole need be improved.
Summary of the invention
The object of this invention is to provide a kind of electrohydraulic point machine, multiple converting unit can be made to realize synchronous conversion, conversion is quick, synchronism is good, be applicable to the especially conversion of high-speed railway switch of different kinds of railways track switch, locking, expression, be applicable to the feature of domestic railway high density, heavy duty, high speed, thus overcome the deficiency that existing electrohydraulic switch machine exists conversion synchronization difference.
For achieving the above object, the present invention adopts following technical scheme:
A kind of electrohydraulic point machine, comprise hydraulic power unit and multiple converting unit, described each converting unit comprises conversion locking mechanism, described conversion locking mechanism comprises oil cylinder, the oil cylinder of described multiple converting unit is connected in series and oil cylinder volume is equal, and described hydraulic power unit drives described multiple oil cylinder synchronization action.
Further, the hydraulic efficiency pressure system of described electrohydraulic point machine is open type hydraulic system, and described hydraulic power unit comprises fuel tank, oil pump, connection drive the motor of oil pump, is connected after the oil cylinder series connection of described multiple converting unit with described oil pump.
Further, described oil pump is two-way oil pump, and in multiple oil cylinders of described mutual series connection, two oil cylinders being positioned at end are connected with first, second hydraulic fluid port of described oil pump respectively by first, second oil circuit; First, second oil circuit described has been connected respectively first, second hydraulic control one-way valve, the fluid control mouth of described first hydraulic control one-way valve is communicated with the second oil circuit, the fluid control mouth of described second hydraulic control one-way valve is communicated with the first oil circuit, when the fluid control mouth of described hydraulic control one-way valve leads to oil, this hydraulic control one-way valve conducting fluid is back to fuel tank.
Further, first, second oil circuit described is also provided with check valve.
Further, the nearly oil pump side of first, second oil circuit described is also connected with by pass valve.
Further, the by pass valve branch road of described first oil circuit is communicated with the fluid control mouth of described second hydraulic control one-way valve; The by pass valve branch road of described second oil circuit is communicated with the fluid control mouth of described first hydraulic control one-way valve.
Further, first, second oil circuit described is respectively arranged with pressure sensor.
Further, also comprise the manual pump be connected with described fuel tank, the hand change over valve be connected with manual pump, the hydraulic lock that is connected with hand change over valve, two hydraulic control one-way valves of described hydraulic lock are connected to the nearly oil cylinder side of first, second oil circuit described.
Further, described fuel tank is connected with return oil filter.
Further, level sensor is provided with in described fuel tank.
Further, described oil pump is two, and mutual parallel connection redundancy each other.
Further, described each oil cylinder two ends are parallel with two by pass valves respectively.
Further, described each oil cylinder two ends are parallel with shuttle-type balance cock startup oil cylinder.
Further, described each oil cylinder both sides are respectively equipped with filter core.
Further, described conversion locking mechanism also comprises throw rod, lock dog, and described throw rod is provided with the first pin-and-hole, and described lock dog is arranged on throw rod by the bearing pin coordinated with the first pin-and-hole; Described throw rod is provided with and is positioned at bearing pin side and perpendicular to the second pin-and-hole of bearing pin and throw rod, bearing pin side is provided with the groove corresponding with the second pin-and-hole, is provided with check pin in the groove of described second pin-and-hole and bearing pin.
Further, described throw rod is also provided with brace panel, described brace panel has the concave station with described lock dog form fit, described lock dog moves in the framework that described concave station and throw rod are formed.
Further, the centre portion of described throw rod has the plane coordinating the motion of described lock dog.
Further, described throw rod two ends are provided with guiding circle hole sleeve, and described circle hole sleeve is embedded with coaxial with it and that internal diameter is equal dust ring.
Further, be also embedded with coaxial with it and that internal diameter is equal flow ring in described circle hole sleeve, have annular oil resevoir between described flow ring and dust ring, along circle hole sleeve inwall, described oil resevoir is by being arranged on the alemite oiling on circle hole sleeve.
Further, the cylinder barrel of described oil cylinder is threaded with between cylinder seat, the sidewall of described cylinder barrel and cylinder seat has corresponding annular groove, is provided with elastic spring in described annular groove.
Owing to adopting technique scheme, the present invention at least has the following advantages:
1. owing to have employed serial oil cylinders, oil cylinder isometric(al) designs, and multiple oil cylinder can share a set of power unit, achieves Multipoint synchronous conversion, and conversion is quick, synchronism is good.
2. hydraulic efficiency pressure system adopts open-circuit system, has self-purification function, the convenient maintenance of hydraulic power unit.
3. adopt the two-way pump that the little efficiency of volume is high, during two oil pump, also can realize redundancy feature.
4. adopt check valve to improve the reliability of hydraulic efficiency pressure system.
5. adopt hydraulic control one-way valve to overcome actuating mechanism to put in place bounce-back.
6. hydraulic power unit is provided with by pass valve, and each oil cylinder two ends are parallel with by pass valve, can adjust respective power output respectively.
7. be provided with hand-hydraulic mechanism, manual pump alternative dynamo oil pump package outputting power drives the cylinder action of each converting unit.Manually hydraulic gear makes the single M/C that can complete multiple spot traction track switch.
8. oil cylinder two ends are parallel with shuttle-type balance cock startup cylinder, can balance two cavity pressures, improve alternating current dynamo starting characteristic, start the long-pending increasing of cylinder body, can meet many pump startups.
9. oil cylinder both sides install oil suction and oil return filter core respectively, improve the cleanliness level of system, and the reliability of Hydraulic Elements improves, and service life extends.
10. be provided with the sensor of monitoring principal parameter, can monitor oil tank liquid level, oil circuit pressure etc., the lower computer for sensor-lodging possesses microcomputer monitoring interface condition, is convenient to carry out real-time state monitoring and data acquisition and procession.
11, be provided with check pin between described throw rod and lock dog to prevent from loosening; Described throw rod centre portion is designed to the form with plane, facilitates lock dog to install and coordinates lock dog to move.
12, the circle hole sleeve at throw rod two ends is provided with dust ring and flow ring, and is provided with oil resevoir further between, serves effect that is dust-proof, the lubrication that reduces wear, increases respectively.
13, between the cylinder barrel of oil cylinder and cylinder seat, junction has annular hole slot for installing annular retaining ring, prevents from loosening between oil cylinder and cylinder seat.
Accompanying drawing explanation
Above-mentioned is only the general introduction of technical solution of the present invention, and in order to better understand technological means of the present invention, below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail.
Fig. 1 is the hydraulic schematic of electrohydraulic point machine of the present invention.
Fig. 2 is the unblock of conversion locking mechanism, conversion, locking process schematic.
Fig. 3 is throw rod, lock dog, the brace panel connection diagram of electrohydraulic point machine of the present invention.
Fig. 4 is the throw rod structural representation of electrohydraulic point machine of the present invention.
Fig. 5 is the circle hole sleeve structural representation of electrohydraulic point machine of the present invention.
Fig. 6 is cylinder seat and the cylinder barrel machinery anti-loose structure schematic diagram of electrohydraulic point machine of the present invention.
Fig. 7 is action plate and the contact group roller gap adjust structure schematic diagram of electrohydraulic point machine of the present invention.
Fig. 8 a is the axial cutaway view of nut connector; Fig. 8 b, 8c be respectively in Fig. 8 a AA to BB to cutaway view.
Fig. 9 a, 9b are birds-eye view and the lateral plan of adjusting nut respectively.
Figure 10 is back-up ring structural representation.
Detailed description of the invention
Switch machine is the key equipment of railway switch conversion, for the conversion of different kinds of railways track switch, locking, expression.Electrohydraulic point machine adopts hydrostatic drive, comprise hydraulic power unit and converting unit, the effect of converting unit is conversion, locking represent switch status, converting unit is divided and can be squeezed and can not squeeze type, the first towing point that converting unit is generally used for the tongue (heart rail) of multiple spot traction track switch can not be squeezed, converting unit can be squeezed and be generally used for single traction track switch or multiple spot traction track switch other towing point except tongue (heart rail) the first towing point.
Converting unit can not be squeezed and mainly comprise conversion locking mechanism, locking indication mechanism, mechanical, hand-driven mechanism; Conversion locking mechanism primarily of compositions such as oil cylinder group, throw rod group and locking iron, its effect be conversion and locking tongue or heart rail at terminal location; Locking indication mechanism primarily of compositions such as contact group, locking rods, its effect be correctly reflect tongue or heart track-like state and locking tongue or heart rail in closely connected position; Mechanical, hand-driven mechanism primarily of the composition such as manual gear, tooth bar, its effect be mounting turnout adjustment or circuit, oil piping system fault time, manually pull track switch.
Converting unit can be squeezed mainly comprise conversion locking mechanism, squeeze de-outgoing mechanism, mechanical, hand-driven mechanism; Conversion locking mechanism, the effect of mechanical, hand-driven mechanism and composition are with squeezing converting unit, squeeze de-outgoing mechanism primarily of compositions such as crowded uncoupling point group, indication rods (being locking indication bar during single traction), its effect correctly reflects tongue or heart track-like state, and have squeeze interrupt presentation function, single traction switch locked indication bar also has locking functions.
Electrohydraulic point machine of the present invention, comprises hydraulic power unit and multiple converting unit, and converting unit can be set to above-mentioned converting unit of can not squeezing according to hitch position maybe can squeeze converting unit.The conversion locking mechanism of each converting unit has been moved by oil cylinder sweeping action bar and has changed and locking action.Multiple converting unit oil cylinder to be connected in series and oil cylinder volume is equal, described hydraulic power unit drives described multiple oil cylinder synchronization action.Connected by the oil cylinder of each converting unit, isometric(al) design, realize the synchronous switching motion of converting unit.
Refer to shown in Fig. 1, have three converting units for switch machine, three corresponding oil cylinders 1 are sequentially connected in series, and connected and transmit hydraulic power by oil circuit, and share a set of hydraulic power unit.
Described hydraulic efficiency pressure system is open type hydraulic system, and hydraulic power unit comprises fuel tank, oil pump 3, motor 2, is connected between motor 2 with oil pump 3 by coupler.Wherein, the body of described motor 2 preferably adopts high strength aluminum alloy, to improve the class of insulation.Oil pump 3 and attaching parts thereof are dipped in fuel tank oil, decrease attaching parts, reduce volume.Further, the inlet line of described oil pump 3 can be arranged check valve 4 and filter core 12, before described fuel tank, return oil filter 13 can be set, in fuel tank, level sensor 14 can be set.
Preferably, as shown in fig. 1, described oil pump 3 is two-way oil pump, and in multiple oil cylinders 1 of described mutual series connection, two oil cylinders 1 being positioned at end are connected with two hydraulic fluid ports of described two-way oil pump 3 respectively by first, second oil circuit; Described first oil circuit is connected with the first hydraulic control one-way valve 71, second oil circuit is connected with the second hydraulic control one-way valve 72, the fluid control mouth of described first hydraulic control one-way valve 71 is communicated with the second oil circuit, and the fluid control mouth of described second hydraulic control one-way valve 72 is communicated with the first oil circuit.When the fluid control mouth of certain hydraulic control one-way valve leads to oil, this hydraulic control one-way valve conducting fluid is back to fuel tank.
Further, first, second oil circuit described is also provided with the check valve 5 with retracing spring, for increasing the stability of oil piping system.The nearly oil pump side of first, second oil circuit described is all connected with by pass valve 61, for adjusting oil circuit pressure.First, second oil circuit is also all provided with pressure sensor 8, for detecting oil circuit pressure.The connection branch road of the by pass valve of described first oil circuit is communicated with the fluid control mouth of described second hydraulic control one-way valve 72, the connection branch road of the by pass valve of described second oil circuit is communicated with the fluid control mouth of described first hydraulic control one-way valve 71, during output two-way for corresponding two-way pump, the oil-feed each other of described first and second oil circuits and fuel-displaced oil circuit.
Specifically, rotarily drive two-way oil pump 3 to the right with motor 2 to be described from during the oil suction of left side: the fluid fuel tank is through filter core 12, pumped by oil pump 3 after check valve 4, the high pressure oil pumped enters the oil inlet of first converting unit by the first oil circuit, the oil outlet of this converting unit is connected with the oil inlet of next converting unit, simultaneously because the fluid control mouth of hydraulic control one-way valve 72 is connected with the pipeline that by pass valve 61 is connected the first oil circuit, oil-feed makes hydraulic control one-way valve 72 be opened, the fuel-displaced hydraulic control one-way valve 72 by low pressure oil return side of end converting unit, return oil filter 13 gets back to fuel tank, when high pressure oil reaches the setting value of power unit by pass valve 61, fuel tank is got back in overflow.
Two ends difference two by pass valves in parallel 62, two by pass valves 62 of the oil cylinder 1 of each converting unit are drawn in for setting up respectively or stretch out maximum conversion power; The both sides of each oil cylinder 1 are equipped with filter core 12, for ensureing that oil circuit cleans.In addition, each oil cylinder 1 two ends are also parallel with shuttle-type balance cock startup cylinder 11 (can be the patent documentation of CN103615425A see publication number), for balancing two cavity pressures, improving alternating current dynamo starting characteristic.
In above-mentioned hydraulic efficiency pressure system, motor, coupler, oil pump form Oil pump electrical machinery group, and its effect is hydraulic energy by converting electric energy; Oil pipe, check valve, hydraulic control one-way valve, hydraulic energy is transferred to converting unit by the oil circuit parts such as filter core, by pass valve and fuel tank.
Wherein, oil pump 3 also can be arranged to two oil pumps of redundancy each other in parallel mutually further.Specifically, two pumps group can be set respectively by independently motor, oil pump and Hydraulic Elements form, by pipeline, pilot operated valve device Parallel opertation, the task driven converting unit conversion simultaneously of two pump groups, when wherein a pump group can not work for some reason, the output resume of another pump group drives converting unit work, track switch is changed and puts in place, only extends transfer time (can obtain failure message by monitoring transfer time).
Except aforementioned mechanical hand gear can realize manually pulling except track switch, switch machine of the present invention is also provided with hydraulic manual mechanism further, described hydraulic manual mechanism comprises the manual pump 9 be connected with described fuel tank, the hand change over valve 10 be connected with manual pump 9, the hydraulic lock that is connected with hand change over valve 10, and two hydraulic control one-way valves of described hydraulic lock are connected to the nearly oil cylinder side of first, second oil circuit described.Hydraulic manual mechanism also comprises safety switch, disconnects power system oil circuit simultaneously for realizing reliably cutting off motor action power supply, connects hand oil-way, and non-through manual reversion, can not connect motor action power supply and power system oil circuit.Safety switch is provided with registration device, malfunction when preventing it from normally working.
Under general state, the change-over valve of hydraulic manual mechanism is in the interposition shown in Fig. 1, for normality position, when needs manually pull track switch by oil piping system, first as required safety switch is placed in desired location, when hand oil-way is connected, after disconnecting motor action power supply and power system oil circuit simultaneously, artificial hand shakes manual pump, makes manual pump substitute crude oil pump group of motors outputting power, drives each converting unit action.This hand gear exports high pressure oil to converting unit, and the oil return of converting unit gets back to fuel tank by the hydraulic control one-way valve in hydraulic lock, completes manual switch.Utilize above-mentioned hydraulic manual mechanism can realize the single M/C that can complete multiple spot traction track switch.Flip operation is determined by this mechanism single realization within track switch three towing points in this example.
Hydraulic point machine of the present invention is also provided with monitoring system, described monitoring system comprises lower computer and corresponding information acquisition sensor, information acquisition sensor includes but not limited to the level sensor 14 arranged in described fuel tank, the pressure sensor 8 that first, second oil circuit described is arranged respectively.As collecting device also can be arranged further, the parameters such as electric current, opening time, action frequency are monitored, detection data are sent to lower computer by these collecting devices, lower computer has microcomputer interface condition, upper computer can be connected and carry out Real-Time Monitoring, realize enquiry of historical data, analyze, diagnosis, prompt facility, as provided track switch operating pressure curve etc., thus provide reference for field maintemance.
Shown in Fig. 2, above-mentioned hydraulic power unit is changed and locking action by driving the oil cylinder sweeping action bar of each converting unit to move, below the operating principle of conversion locking mechanism is briefly introduced: the throw rod 15 of described conversion locking mechanism is provided with two lock dogs by bearing pin 18, be respectively location lock dog 161 and antiposition lock dog 162, throw rod 15 both sides are respectively push rod 22 and locking iron 23, push rod 22 is fixed on the side of oil cylinder 1 (not shown in Fig. 2), and the piston rod of oil cylinder 1 maintains static.During hydraulic power unit work, because piston rod maintains static, make oil cylinder 1 action to the right, the push pedal 22 being fixed on oil cylinder 1 side contacts antiposition lock dog 162 rear (in Fig. 2 shown in a), when oil cylinder 1 continues to move forward, moved right by push pedal 22 and antiposition lock dog 162 sweeping action bar 15, locate lock dog 161 to start to unlock simultaneously, after unblock traverse covered by oil cylinder 1, antiposition lock dog 162 and location lock dog 161 are in the gap of locking iron 23 and push pedal 22, oil cylinder 1 continues through and pushes away 1 plate 22 and antiposition lock dog 162 sweeping action bar 15 moves right (in Fig. 2 b shown in), when the locking face that throw rod 15 continues to move to antiposition lock dog 162 and locking iron 23 will act on, start to enter locking process, continue the 15.2mm that moves right, antiposition lock dog 162 is pushed the reverse locking face of locking iron 23, antiposition switch point housing is in stock rail, now, the stroke of throw rod 15 is 7.6mm, (therefore, when switch point housing, conversion power on throw rod 15 can double, when switch point housing is after stock rail, oil cylinder 1 continues to move right, throw rod 15 is failure to actuate, push pedal 22 enters the locking face of antiposition lock dog 162, enter locking states (in Fig. 2 shown in c).
Shown in Fig. 3, antiposition lock dog 161 is arranged in the first pin-and-hole on throw rod 15 by bearing pin 18, described throw rod 15 is also provided with and is positioned at bearing pin 18 side and perpendicular to the second pin-and-hole of bearing pin 18 and throw rod 15, bearing pin 18 side is provided with the groove corresponding with the second pin-and-hole, is provided with check pin 19 in the groove of described second pin-and-hole and bearing pin 18.Described throw rod 15 is also provided with brace panel 17, and brace panel 17 adds upper gasket 21 by screw 20 and is fixed on throw rod 15.Described brace panel 17 has the concave station with described antiposition lock dog 161 form fit, described antiposition lock dog 161 moves in the framework that described concave station and throw rod 15 are formed.The fixed form of location lock dog 162 (not shown in Fig. 3) is identical with antiposition lock dog 161.
Refer to shown in Fig. 4, the throw rod 15 that hydraulic power switch machine of the present invention adopts is designed to following form: intermediate portion cross-section is rectangular, has the plane coordinating location lock dog 162 and antiposition lock dog 161 to move, and is convenient to the guiding of lock dog and fixes; Two end portions cross section is circular, for coordinating with following circle hole sleeve, is convenient to dustproof and waterproof and lubrication.
Circle hole sleeve be throw rod or locking rod (indication rod) move in switch machine guide locating device provided, because these rod members are circular design, so the endoporus of circle hole sleeve is circular.Refer to shown in Fig. 5, in the circle hole sleeve 24 that hydraulic power switch machine of the present invention adopts, be provided with coaxial with it and that internal diameter is equal dust ring 26.Further, be also provided with coaxial with it and that internal diameter is equal flow ring 27 in described circle hole sleeve 24, particularly, dust ring 26 and flow ring 27 are entrenched in the annular groove that circle hole sleeve 24 inwall offers.Between dust ring 26 and flow ring 27, along circle hole sleeve inwall, also have annular oil resevoir, described oil resevoir is by being arranged on alemite 25 oiling on circle hole sleeve 24.Circle hole sleeve 24 preferably adopts the manufacture of wear-resistant self-lubricating powdered metallurgical material.
Generally speaking, in switch machine, the cylinder barrel of oil cylinder 1 is threaded with adopting between cylinder seat, because the reasons such as vibrations there will be the phenomenon got loose, cause oil leakage fault, therefore, hydraulic power switch machine of the present invention is also provided with the mechanical anti-loose structure of cylinder seat and cylinder barrel, particularly, refer to shown in Fig. 6, the sidewall of cylinder barrel 28 and cylinder seat 30 has corresponding annular groove, elastic spring 29 is installed in described annular groove.Cylinder seat 30 is provided with the outside opening communicated with annular groove, and after cylinder barrel 28 is good with cylinder seat 30 liang of Assembly of the parts, elastic spring 29 penetrates annular groove inside by opening part, plays locking effect.
Refer to shown in Fig. 7, the horizontal position of oil cylinder 1 in switch machine converting unit is that the stay bearing plate 33 vertically arranged by both sides (only side being shown in figure) fixes, stay bearing plate 33 is provided with mounting hole, cylinder connector body 32 is sleeved on cylinder piston rod 31, and cylinder piston rod 31 end is threaded connection.Switch machine of the present invention improves at oil cylinder 1 two ends and stay bearing plate 33 connecting portion, action plate and contact group roller gap is made to realize stepless changing, adjustment accurately, easy and simple to handle, quick, overcome existing by increase and decrease adjusting pad change the position of oil cylinder described gap is adjusted time, there is gap cannot all eat up the drawback loaded down with trivial details with set-up procedure.
The adjustment of above-mentioned gap by improving nut connector, set up adjusting nut and back-up ring realizes, specifically, refer to shown in Fig. 7, the adjust structure after improvement comprises nut connector 34, adjusting nut 35 and back-up ring 36.
Refer to shown in Fig. 8 a-8c, described nut connector 34 is by the female termination of tool 41 and have externally threaded screw rod and form, the screw rod of described nut connector 4 is step, comprise first step 43, second step 42 between first step 43 and described termination 41, the diameter of described second step 42 is greater than first step 41, and described second step 42 has axial notch 44.
Refer to shown in Fig. 9 a, 9b, described adjusting nut 45 comprises the female annular sidewall of tool, and one end of described annular sidewall is provided with footpath convex 52, and the other end offers multiple axial gap 51 along its even circumferential.
Refer to shown in Figure 10, described back-up ring 36 is cyclic structure, and the inwall of back-up ring 36 is provided with detent projection 63.
Please refer to Fig. 7, during actual installation, one end of described nut connector 34 is for connecting the threaded connection of described piston rod 31, and the other end of described nut connector 34 is set with adjusting nut 35, stay bearing plate 33 and back-up ring 36 successively.Described adjusting nut 35 rotation set is on the second step 42 of described nut connector 34, and the breach 51 on adjusting nut 35 can form superposition groove relatively with groove 44 position on described second step 42 respectively; The annular sidewall external diameter of adjusting nut 35 is suitable with the mounting hole internal diameter of described stay bearing plate 33, and described stay bearing plate 33 is sleeved on the annular sidewall of described adjusting nut 35 by mounting hole; Described back-up ring 36 ring set is on the sidewall of described adjusting nut 35, and the detent projection 63 on it embeds in described superposition groove; The first step 43 of described nut connector 34 is passed described back-up ring 36 and is fixed on outside stay bearing plate 33 by nut 37.
By arranging form above, described adjusting nut 35 by the adjustment of spinning in and out on described second step 42 position, and passes through the detent projection 63 of described back-up ring 36 to embed latched position in described superposition groove.
As preferred embodiment, as shown in Fig. 9 a, 9b, six axial gaps 51 are evenly offered in annular sidewall one end of described adjusting nut 35.Described adjusting nut 35 adopts metric thread specification to be M24*2, described axial gap 51 is set to wide 8mm, dark 6mm, make when described adjusting nut 35 is threaded to another adjacent with it axial gap position from an axial gap, the axial motion distance of described adjusting nut 35 is 1/3mm.Namely switch machine action plate and each minimum of contact group roller gap adjust distance is 1/3mm, adds Adjustment precision.If increase the quantity of axial gap 51 on the adjusting nut 35 of same specification further, then the distance of the axial motion achieved by rotary distance between adjacent axial gap 51 will be less, namely reduce minimum adjustment distance further, add Adjustment precision.
More than be arranged so that after oil cylinder 1 loads converting unit inside, by adjusting nut 35 along or left-hand revolution change the position of oil cylinder 1, effectively fixing locking by the detent projection 63 on back-up ring 36 after adjusting, thus make the gap between the contact group roller of the locking indication mechanism in switch machine and action plate realize stepless changing, and it is easy and simple to handle, adjustment accurately, adjustment process stable and be easy to control.
In sum, owing to have employed above technical scheme, the oil piping system of electrohydraulic point machine of the present invention, converting system, monitoring system have following features compared to existing technology:
One, oil piping system:
1. oil piping system devises serial oil cylinders, achieves synchronous conversion.
2. adopt two-way open-circuit system, there is self-purification function.
3. install oil suction and oil return filter core, improve the cleanliness level of system, the reliability of Hydraulic Elements improves, and service life extends.
4. adopt the check valve having retracing spring, improve the reliability of hydraulic efficiency pressure system.
5. oil piping system adopts hydraulic control one-way valve to overcome actuating mechanism to put in place bounce-back.
6. power unit is provided with total by pass valve, and each converting unit is provided with the by pass valve of band filter core, can adjust respective power output respectively.
7. power unit is provided with independently hydraulic manual mechanism, improves hand efficiency, and the single multiple spot that completes draws track switch M/C.
8. motor body adopts high strength aluminum alloy, improves the class of insulation.
9. power unit adopts open by design, convenient maintenance.
10. oil pump and attaching parts thereof are dipped in oil, decrease attaching parts, reduce volume.
11. oil cylinders are parallel with shuttle-type balance cock startup cylinder and balance two cavity pressures, improve alternating current dynamo starting characteristic.Start the long-pending increasing of cylinder body, many pump startups can be met.
12. adopt the two-way pump that the little efficiency of volume is high, also can realize redundancy feature during two oil pump.
Two, converting system:
1. use isometric(al) serial oil cylinders, realize each towing point and synchronously change.
2. can not squeeze converting unit and have two bar locking functions, the squeezed converting unit for single traction has two lever lock and closes and squeeze and interrupt presentation function.
3. throw rod, locking rod (indication rod) adopt cylindrical structural, locking rod (indication rod) is also provided with anti-bag mouth opener, namely the semi-circular locking rod (indication rod) of two respectively actions to be fixed together formation circle with an annulus, but still can to ensure that it can along the relative motion of pole length direction.
4. circle hole sleeve adopts the manufacture of wear-resistant self-lubricating powdered metallurgical material, is provided with oil resevoir, and guide ring, dust ring are housed, decrease the wearing and tearing between rod member and circle hole sleeve, improves dustproof and waterproof performance.
5. converting unit is provided with mechanical, hand-driven mechanism, facilitates site installation test, when needing, is unclamped by by pass valve, can carry out rapidly changing and adjusting.
6. oil cylinder two ends and stay bearing plate connecting portion structural development, convenient adjustment starts sheet, contact roller and cylinder action sheet separation, realizes stepless changing, adjustment accurately, adjustment process stable and be easy to control, easy and simple to handle, quick, and adjust structure utilizes the back-up ring of cooperation realize effectively locking.
7. be provided with mechanical locking device between oil cylinder seat and cylinder barrel.
8. be provided with check pin between converting unit throw rod and bearing pin, prevent bearing pin from moving back groove, brace panel adopts and fixes with the screw of anti-loose structure.
9. main components adopts high strength aluminum alloy, alleviates deadweight, ensure that intensity, improve antiseptic property, facilitate installation.
10. contact devises two profiles number: one is arc structure, and another kind is sealing SPX contact, and the sealing of this contact, non-maintaining, vibration resistance are up to 230g.On-the-spot without the need to adjustment and maintenance.
Three, monitoring system
Can monitor parameters such as oil tank liquid level, pressure, electric current, opening time, action frequencies, possess microcomputer monitoring interface condition.Can enquiry of historical data by microcomputer monitoring, track switch operating pressure curve is provided; There is analysis, diagnosis, prompt facility, for field maintemance provides reference.
The above; it is only preferred embodiment of the present invention; not do any pro forma restriction to the present invention, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in protection scope of the present invention.
Claims (20)
1. an electrohydraulic point machine, comprise hydraulic power unit and multiple converting unit, described each converting unit comprises conversion locking mechanism, described conversion locking mechanism comprises oil cylinder, it is characterized in that, the oil cylinder of described multiple converting unit is connected in series and oil cylinder volume is equal, and described hydraulic power unit drives described multiple oil cylinder synchronization action.
2. electrohydraulic point machine according to claim 1, it is characterized in that, the hydraulic efficiency pressure system of described electrohydraulic point machine is open type hydraulic system, described hydraulic power unit comprises fuel tank, oil pump, connection drive the motor of oil pump, is connected after the oil cylinder series connection of described multiple converting unit with described oil pump.
3. electrohydraulic point machine according to claim 2, it is characterized in that, described oil pump is two-way oil pump, and in multiple oil cylinders of described mutual series connection, two oil cylinders being positioned at end are connected with first, second hydraulic fluid port of described oil pump respectively by first, second oil circuit;
First, second oil circuit described has been connected respectively first, second hydraulic control one-way valve, the fluid control mouth of described first hydraulic control one-way valve is communicated with the second oil circuit, the fluid control mouth of described second hydraulic control one-way valve is communicated with the first oil circuit, when the fluid control mouth of described hydraulic control one-way valve leads to oil, this hydraulic control one-way valve conducting fluid is back to fuel tank.
4. electrohydraulic point machine according to claim 3, is characterized in that, first, second oil circuit described is also provided with check valve.
5. electrohydraulic point machine according to claim 3, is characterized in that, the nearly oil pump side of first, second oil circuit described is also connected with by pass valve.
6. electrohydraulic point machine according to claim 5, is characterized in that, the by pass valve branch road of described first oil circuit is communicated with the fluid control mouth of described second hydraulic control one-way valve; The by pass valve branch road of described second oil circuit is communicated with the fluid control mouth of described first hydraulic control one-way valve.
7. electrohydraulic point machine according to claim 3, is characterized in that, first, second oil circuit described is respectively arranged with pressure sensor.
8. electrohydraulic point machine according to claim 3, it is characterized in that, also comprise the manual pump be connected with described fuel tank, the hand change over valve be connected with manual pump, the hydraulic lock that is connected with hand change over valve, two hydraulic control one-way valves of described hydraulic lock are connected to the nearly oil cylinder side of first, second oil circuit described.
9. electrohydraulic point machine according to claim 2, is characterized in that, described fuel tank is connected with return oil filter.
10. electrohydraulic point machine according to claim 2, is characterized in that, is provided with level sensor in described fuel tank.
11. electrohydraulic point machines according to claim 2, is characterized in that, described oil pump is two, and mutual parallel connection redundancy each other.
12. electrohydraulic point machines according to claim 1, is characterized in that, described each oil cylinder two ends are parallel with two by pass valves respectively.
13. electrohydraulic point machines according to claim 1, is characterized in that, described each oil cylinder two ends are parallel with shuttle-type balance cock and start oil cylinder.
14. electrohydraulic point machines according to claim 1, is characterized in that, described each oil cylinder both sides are respectively equipped with filter core.
15. electrohydraulic point machines according to any one of claim 1-14, it is characterized in that, described conversion locking mechanism also comprises throw rod, lock dog, and described throw rod is provided with the first pin-and-hole, and described lock dog is arranged on throw rod by the bearing pin coordinated with the first pin-and-hole; Described throw rod is provided with and is positioned at bearing pin side and perpendicular to the second pin-and-hole of bearing pin and throw rod, bearing pin side is provided with the groove corresponding with the second pin-and-hole, is provided with check pin in the groove of described second pin-and-hole and bearing pin.
16. electrohydraulic point machines according to claim 15, it is characterized in that, described throw rod is also provided with brace panel, described brace panel has the concave station with described lock dog form fit, described lock dog moves in the framework that described concave station and throw rod are formed.
17. electrohydraulic point machines according to claim 16, is characterized in that, the centre portion of described throw rod has the plane coordinating the motion of described lock dog.
18. electrohydraulic point machines according to any one of claim 1-14, it is characterized in that, described throw rod two ends are provided with guiding circle hole sleeve, and described circle hole sleeve is embedded with the coaxial with it and dust ring that internal diameter is equal.
19. electrohydraulic point machines according to claim 18, it is characterized in that, coaxial with it and that internal diameter is equal flow ring is also embedded with in described circle hole sleeve, have annular oil resevoir between described flow ring and dust ring, along circle hole sleeve inwall, described oil resevoir is by being arranged on the alemite oiling on circle hole sleeve.
20. electrohydraulic point machines according to any one of claim 1-14, it is characterized in that, the cylinder barrel of described oil cylinder is threaded with between cylinder seat, the sidewall of described cylinder barrel and cylinder seat has corresponding annular groove, is provided with elastic spring in described annular groove.
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| CN201410800236.3A CN104494647B (en) | 2014-12-20 | 2014-12-20 | A kind of electrohydraulic point machine |
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| CN201410800236.3A CN104494647B (en) | 2014-12-20 | 2014-12-20 | A kind of electrohydraulic point machine |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105644587A (en) * | 2015-12-30 | 2016-06-08 | 中国神华能源股份有限公司 | Switch machine for protecting switch indication diode |
| CN106274984A (en) * | 2016-08-28 | 2017-01-04 | 西安煤矿机械有限公司 | Electric cabinet is controlled in a kind of mining switch rotation department |
| CN106828539A (en) * | 2017-03-10 | 2017-06-13 | 北京全路通信信号研究设计院集团有限公司 | Electro-hydraulic switch machine and conversion locking unit thereof |
| CN107628063A (en) * | 2017-09-30 | 2018-01-26 | 中铁宝桥集团有限公司 | Suspension type monorail traffic system running face upset amendment type track switch transposition point mechanism |
| CN107792119A (en) * | 2016-08-30 | 2018-03-13 | 天津辉煌路阳科技有限公司 | Act locking separate type electrohydraulic switch machine |
| CN109611397A (en) * | 2019-01-25 | 2019-04-12 | 上海速锐信息技术有限公司 | A kind of hydraulic synchronous system and the carrier comprising the synchronization hydraulic system |
| CN109849966A (en) * | 2019-01-03 | 2019-06-07 | 北京全路通信信号研究设计院集团有限公司 | Locking mechanism for point switch |
| CN111059087A (en) * | 2019-12-23 | 2020-04-24 | 中联重科股份有限公司 | Power distribution hydraulic system and crane |
| CN113771912A (en) * | 2020-06-10 | 2021-12-10 | 西安铁路信号有限责任公司 | Linkage detection rod and method for tail adjustment stroke of conversion equipment |
| CN116061989A (en) * | 2023-03-22 | 2023-05-05 | 太原市京丰铁路电务器材制造有限公司 | Electrohydraulic switch machine for railway turnout |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105644587A (en) * | 2015-12-30 | 2016-06-08 | 中国神华能源股份有限公司 | Switch machine for protecting switch indication diode |
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| CN106828539B (en) * | 2017-03-10 | 2018-12-04 | 北京全路通信信号研究设计院集团有限公司 | Electro-hydraulic switch machine and conversion locking unit thereof |
| CN107628063B (en) * | 2017-09-30 | 2023-08-18 | 中铁宝桥集团有限公司 | Running surface overturning correction type switch transposition switch mechanism of suspension type monorail traffic system |
| CN107628063A (en) * | 2017-09-30 | 2018-01-26 | 中铁宝桥集团有限公司 | Suspension type monorail traffic system running face upset amendment type track switch transposition point mechanism |
| CN109849966A (en) * | 2019-01-03 | 2019-06-07 | 北京全路通信信号研究设计院集团有限公司 | Locking mechanism for point switch |
| WO2020140467A1 (en) | 2019-01-03 | 2020-07-09 | 北京全路通信信号研究设计院集团有限公司 | Locking mechanism for point machine |
| CN109849966B (en) * | 2019-01-03 | 2020-09-08 | 北京全路通信信号研究设计院集团有限公司 | Locking mechanism for point switch |
| CN109611397A (en) * | 2019-01-25 | 2019-04-12 | 上海速锐信息技术有限公司 | A kind of hydraulic synchronous system and the carrier comprising the synchronization hydraulic system |
| CN111059087A (en) * | 2019-12-23 | 2020-04-24 | 中联重科股份有限公司 | Power distribution hydraulic system and crane |
| CN111059087B (en) * | 2019-12-23 | 2021-07-30 | 中联重科股份有限公司 | Power distribution hydraulic system and crane |
| CN113771912A (en) * | 2020-06-10 | 2021-12-10 | 西安铁路信号有限责任公司 | Linkage detection rod and method for tail adjustment stroke of conversion equipment |
| CN116061989A (en) * | 2023-03-22 | 2023-05-05 | 太原市京丰铁路电务器材制造有限公司 | Electrohydraulic switch machine for railway turnout |
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