CN208745992U - A kind of locomotive sand-spraying control device - Google Patents
A kind of locomotive sand-spraying control device Download PDFInfo
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- CN208745992U CN208745992U CN201821288013.3U CN201821288013U CN208745992U CN 208745992 U CN208745992 U CN 208745992U CN 201821288013 U CN201821288013 U CN 201821288013U CN 208745992 U CN208745992 U CN 208745992U
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- stucco
- pneumatic valve
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Abstract
The utility model discloses a kind of locomotive sand-spraying control devices, belong to railway locomotive technical field.It includes electric cabinet and sub-control box, wind pressure sensor and stucco electric pneumatic valve are equipped in sub-control box, sub-control box has gas circuit entrance, gas circuit outlet and circuit interface, DC converter, control module and stucco relay are equipped in electric cabinet, electric cabinet has power supply interface, sensor connecting interface, electric pneumatic valve connecting interface, speed signalling interface, stucco signaling interface.The utility model is simple in sturcture, ingenious in design, easy to implement, is conducive to the automatization level for promoting existing locomotive sand-spraying system, and then improve the stability and safety of locomotive operation.Meanwhile upgrading is transformed to existing locomotive with can be convenient using the utility model, to make the utility model that there is extremely strong application prospect and economic benefit.
Description
Technical field
The utility model relates to a kind of locomotive sand-spraying control devices, belong to railway locomotive technical field.
Background technique
When locomotive traction, driving wheel active force will generate idle running on rail, lead locomotive if it is greater than adhesion strength, wheel
Gravitation, which sharply declines, even to disappear, and serious person leads to traction motor failure.
Adhesion strength between train wheel and rail is affected by various factors.Locomotive is started to walk in tractor-trailer train, accelerates, is rushed
In the case that slope operation etc. needs to increase tractive force, frost is especially operated in, snow, ice, water, grease, wheel tread lose circle, rail
When under the situations such as damage, generation axle weight transfer, it is easy to appear idle running between wheel and rail, skids, leading for idler shaft occurs
Gravitation sharply declines, and then influences the performance of the entire hauling capacity of a locomotive.At this point, by the equably stucco on Rail Surface, it can
To improve the adhesion strength of locomotive, the idle running of wheel is eliminated, gives full play to the tractive force of locomotive.
Currently, the sander of electric power, diesel locomotive mainly by sandbox, sanding valve, sand pipe, compressed air line, spread
The components such as sand electric pneumatic valve composition.The effect of sandbox is the qualified sand of storage；Sanding valve is the critical component of locomotive sand spraying device,
Effect is that the sand in sandbox is blowed floating and equably sprayed out by the compressed air provided when needing stucco using locomotive itself
Come；The effect of sand pipe is that the sand of raising for spraying out sanding valve is oriented between locomotive wheel and rail；Compressed air line effect
It is to use the compressed air supply sanding valve of locomotive main air reservoir output；The effect of stucco electric pneumatic valve is to turn on or turns off to lead to and spread
The compressed air of sand valve, stucco electric pneumatic valve turn on and off, and are by electric appliance (oneself related on driver's (manually controlling) or locomotive
Dynamic control) control.
Above-mentioned stucco control mode is relatively simple.When needing stucco, driver presses stucco button, and control stucco electricity is empty
Valve obtains electric, actuation, opens the compressed air gas circuit led under vehicle, and sanding valve blows out sand under pressure.But locomotive
State changes at any time, and single mode controls stucco process, and there is drawbacks.With in practice, driver will be according to train traction
Control actual stucco amount after state, the speed of service, weather conditions comprehensive descision by way of manually controlling again, it is therefore an objective to
One layer of thin sand is equably covered between wheel and rail, this is more satisfactory state.But in the actual operation process,
Even veteran high level driver is also extremely difficult to such ideal stucco result.Stucco amount is too small, then can not provide
Enough frictional force；Stucco amount is excessive, can not efficiently solve the idle running of wheel, also will increase additional resistance, band instead
Carry out many negative consequences.In addition, stucco amount is excessive to be also added when opening vehicle again when implementation emergency braking locomotive closes on parking
Resistance.
Utility model content
It aiming at the problems existing in the prior art, can be square the utility model proposes a kind of locomotive sand-spraying control device
Just it is installed on existing locomotive, is advantageously implemented the automatic control that locomotive sands.
To achieve the goals above, the utility model provides the following technical solutions:
A kind of locomotive sand-spraying control device comprising electric cabinet and sub-control box, the sub-control box is interior to be equipped with wind pressure sensor
With stucco electric pneumatic valve, there is the sub-control box gas circuit entrance, gas circuit outlet and circuit interface, the stucco electric pneumatic valve to be connected to gas
Between the gentle way outlet of road entrance, the wind pressure sensor is set between the gas circuit entrance and stucco electric pneumatic valve, the circuit
Interface includes the sensor interface being connected with wind pressure sensor and the electric pneumatic valve interface being connected with stucco electric pneumatic valve, the stucco
Electric pneumatic valve is in normally open；DC converter, control module and stucco relay, the electric cabinet are equipped in the electric cabinet
With power supply interface, sensor connecting interface, electric pneumatic valve connecting interface, speed signalling interface, stucco signaling interface, the direct current
The input terminal of converter is connect with the power supply interface, the output end of the DC converter respectively with control module and electric pneumatic valve
Connecting interface connection, the stucco relay are used to control the on-off of electric pneumatic valve connecting interface, the speed signalling interface, stucco
The control terminal of signaling interface, sensor connecting interface and stucco relay is connect with the control module；The electric pneumatic valve
Interface is connect with the electric pneumatic valve connecting interface, and the sensor interface is connect with the sensor connecting interface.
Optionally, excision switch is additionally provided on the electric cabinet, the excision switch is connected to the stucco signaling interface
On circuit between the control module.
Optionally, touch screen is additionally provided on the electric cabinet, the touch screen is connect with the control module.
Optionally, the circuit interface of the sub-control box is to be inserted by four cores that sensor interface and electric pneumatic valve interface collectively constitute
Mouthful, the sensor connecting interface and electric pneumatic valve connecting interface collectively constitute a four core air plug interfaces being located on electric cabinet.
Optionally, between the speed signalling interface and the control module and the stucco signaling interface with it is described
Photoelectric isolating circuit is equipped between control module.
Optionally, the input voltage of the DC converter is 110 volts, and output voltage is 24 volts, in the control module
Equipped with the power circuit for 24 volts of voltages to be converted to 5 volts of voltage.
From narration above as can be seen that the beneficial effect of technical solutions of the utility model is:
1, the utility model structure is simple, and integrated level is high, convenient for deployment, can be directly installed on existing manual sander
Che Shang, it is very easy to use without doing excessive transformation to existing locomotive, it is easy to promote and utilize.
2, the utility model can be transformed manual sander vehicle, by loading journey appropriate in the control module
The automation control of locomotive sand-spraying may be implemented in sequence, to greatly promote the accuracy of stucco amount, improves the peace of locomotive driving
Full reliability.
3, the utility model is further provided with photoelectric isolating circuit in the periphery of control module, and photoelectric isolating circuit can
To play the role of insulation blocking to the original circuit of locomotive, ensure that the original electrical system of locomotive is unaffected.In addition, this reality
With novel, excision switch can also be set between stucco signal and control module.In this way, by way of disconnecting switch, it can be with
Separate stucco signal, the utility model is cut off completely from the stucco control system of locomotive, to restore that locomotive is original to be spread
Sand control structure and control mode.
In short, the utility model is simple in sturcture, ingenious in design, and it is easy to implement, be conducive to promote existing locomotive sand-spraying system
Automatization level, and then improve locomotive operation stability and safety.Meanwhile using the utility model can be convenient pair
Existing locomotive is transformed upgrading, so that the utility model be made to have extremely strong application prospect and economic benefit.
Detailed description of the invention
In order to clearly describe this patent, one or more attached drawing is provided below.
Fig. 1 is the structural block diagram of control device in the utility model embodiment；
Fig. 2 is the structural schematic diagram of sub-control box in the utility model embodiment；
Fig. 3~7 are several electrical block diagrams in the utility model embodiment；
Fig. 8 is a kind of use state structural block diagram of the utility model embodiment.
Specific embodiment
Understanding for the ease of those skilled in the art to the art of this patent scheme, below to this in the form of concrete case
The technical solution of patent is described further.
As shown in Figure 1, a kind of locomotive sand-spraying control device comprising electric cabinet and sub-control box are equipped in the sub-control box
Wind pressure sensor and stucco electric pneumatic valve, the sub-control box have gas circuit entrance, gas circuit outlet and circuit interface, and the stucco electricity is empty
Valve is connected between the gentle way outlet of gas circuit entrance, the wind pressure sensor be set to the gas circuit entrance and stucco electric pneumatic valve it
Between, the circuit interface includes that the sensor interface being connected with wind pressure sensor and the electric pneumatic valve being connected with stucco electric pneumatic valve connect
Mouthful, the stucco electric pneumatic valve is in normally open；DC-DC DC converter, control module and stucco are equipped in the electric cabinet
Relay, the electric cabinet have power supply interface, sensor connecting interface, electric pneumatic valve connecting interface, speed signalling interface, stucco
Signaling interface, the input terminal of the DC converter are connect with the power supply interface, the output end difference of the DC converter
It is connect with control module and electric pneumatic valve connecting interface, the stucco relay is used to control the on-off of electric pneumatic valve connecting interface, institute
State the control terminal of speed signalling interface, stucco signaling interface, sensor connecting interface and stucco relay with the control
Module connection；The electric pneumatic valve interface is connect with the electric pneumatic valve connecting interface, and the sensor interface and the sensor connect
Connection interface connection.
Specifically, as shown in Fig. 2, sub-control box includes cabinet 1 and wind pressure sensor 4, stucco electricity in cabinet 1
Empty valve 3 and valve block 2, valve block 2 have a gentle way outlet 22 of gas circuit entrance 21, and wind pressure sensor 4 and stucco electric pneumatic valve 3 are and valve block
2 connections, and wind pressure sensor 4 and 3 sequential series of stucco electric pneumatic valve are between the gentle way outlet 22 of gas circuit entrance 21.Wind pressure sensing
Device 4 has a lead 40, and stucco electric pneumatic valve 3 has a lead 30, lead 40 and lead 30 with four core circuit interfaces 11 on cabinet 1
Connection.Entire cabinet 1 only has gas circuit entrance 21, gas circuit outlet 22 and circuit interface 11 totally three external interfaces.In addition, to reinforce
Also gasket can be arranged between stucco electric pneumatic valve 3 and valve block 2 in leakproofness.
In use, electric cabinet can be arranged in locomotive control room, by the speed interface of electric cabinet and the axle speed of locomotive
Sensor connection, power supply interface is connect with electrical locomotive power, by the stucco pedal or stucco button of stucco signaling interface and locomotive
Connection.Meanwhile sub-control box is set to locomotive bottom close to the position of stucco, the original pneumatic circuit of locomotive is truncated, will be cut
Disconnected pipeline is connect with the gentle way outlet of gas circuit entrance of sub-control box respectively, so that sub-control box is connected on the original stucco of locomotive
In gas circuit.
By working out program appropriate, the control device can be made to realize the automatic control to locomotive sand-spraying amount.It is specific next
It says, following procedure can be run in the control module:
(1) stucco pedal signal is detected；
(2) when receiving pedal signal, the pulse signal of the shaft speed sensor of locomotive is introduced, pulse signal is by controlling
Timer count in module is simultaneously converted to speed v；Meanwhile the wind pressure p of respective line is obtained by wind pressure sensor；
(3) stucco amount w is calculated according to the proportional relation of speed and the amount of sanding, i.e. w=k × v, k are proportionality coefficient；
(4) pwm pulse fixed to the stucco electric pneumatic valve of the sub-control box output period controls signal, in a cycle T, stucco
The opening time of electric pneumatic valve is t, then the shut-in time of stucco electric pneumatic valve is T-t；Wherein:
t1=f1(w, p),
t2=f2(w, p),
f1And f2It is the binary quadratic polynomial about w and p.
When pedal is stepped on, the original stucco electric pneumatic valve of locomotive is in the open state, and present apparatus stucco electric pneumatic valve is then by controlling
Module carries out automatically controlling, according to the calculated opening/closing time of control module, present apparatus stucco electric pneumatic valve can control by
Air supply, and then control stucco amount.
In general, cycle T can be set as 1500 milliseconds, certainly, can also be set as other according to the actual situation rationally
Numerical value.
Optionally, still see Fig. 1, excision switch is additionally provided on the electric cabinet, the excision switch is connected to the stucco
On circuit between signaling interface and the control module.Excision switch can control the access of stucco signal, when the present apparatus is sent out
Raw failure, or when not needing the present apparatus and being controlled, can by way of disconnecting excision switch by the present apparatus from entirely spreading
It is cut off in sand control system.Since the stucco electric pneumatic valve of the present apparatus is in normally open, after cutting off the present apparatus, locomotive
For stucco gas circuit only by the control of the original stucco electric pneumatic valve of locomotive, the present apparatus will not cause any shadow to original control mode of locomotive
It rings.
Optionally, touch screen is additionally provided on the electric cabinet, the touch screen is connect with the control module.Touch screen is
Electric cabinet provides human-computer interaction interface.By human-computer interaction interface, the parameter in control process can be configured and be adjusted,
And it can detecte the operating status of control system.
Optionally, the circuit interface of the sub-control box is to be inserted by four cores that sensor interface and electric pneumatic valve interface collectively constitute
Mouthful, the sensor connecting interface and electric pneumatic valve connecting interface collectively constitute a four core air plug interfaces being located on electric cabinet.
Optionally, between the speed signalling interface and the control module and the stucco signaling interface with it is described
Photoelectric isolating circuit is equipped between control module.Certainly, photoelectric isolating circuit can also be integrated in together jointly with control module
In one PCB circuit board.Photoelectric isolating circuit is the prior art, and details are not described herein again.Photoelectric isolating circuit can be original to locomotive
Circuit play the role of insulation blocking, that is, the automatically controlled box part in this example will not influence the electrical of the original circuit of locomotive completely
Performance, to ensure the reliable and stable operation of the original electrical system of locomotive.
Optionally, the input voltage of DC-DC DC converter is 110 volts, and output voltage is 24 volts, in the control module
Equipped with the power circuit for 24 volts of voltages to be converted to 5 volts of voltage.The power input of DC converter can be directly using column
The 110V direct current that vehicle provides, does not need external other power supplys.The DC converter can using one piece meet EN50155 and
The EN45545-2 railway system certification DC-DC converter, the converter have short circuit, overload, over-voltage, overheat, input protect,
The functions such as input and output isolation, have wider voltage power supply range, ensure that the stability of system work.
In above-mentioned each example, control module can be using ARM single-chip microcontroller as main part, DC-DC DC converter and machine
Vehicle power supply connection, for locomotive 110V power supply to be converted to 24V power supply.
Specifically, the control core of control module can choose the Cortex-M3 processor of mainstream, which possesses
The problem of 72M dominant frequency, 20K RAM, 64K ROM, built-in house dog will not crash.Multiple timers built in the processor,
Accurately calculating speed line pulse can be sampled, calculate speed.12 ADC, with detection wind pressure, detection speed it is fast.Built-in
64KRAM meets the storage of real time data.By writing storage polling routine, data storage can achieve thousands of times.
Fig. 3 show the power circuit of control module, uses DC-DC chip, and 24V power supply is converted to 5V power supply, from
And it is the power supply such as control and detection circuit.
Fig. 5 show the control circuit of present apparatus stucco electric pneumatic valve, is realized by triode and relay, single-chip microcontroller output
Low and high level controls the on-off of triode Q4, to control the switch of relay JDQ1, relay controls the switch of electric pneumatic valve again.
Fig. 6 show the stucco signal deteching circuit in control module, and the signal that sands is 110V level signal, defeated by J7
Enter to photoelectric isolated chip 6N136, is converted to 3.3V level signal by VO pin and is output to single-chip microcontroller.Photoelectric isolated chip one
Aspect plays signal isolation, on the other hand also functions to the effect of level conversion.
Fig. 7 show the speed signal detection circuit in control module, and speed signal is two-way quadrature coding pulse signal,
It is inputted respectively by J5, J6, the encoder interfaces of single-chip microcontroller is input to by two-way photoelectric isolated chip.
The range of wind pressure sensor is 0~1.6MPa, and signal type is 4~20mA, and working range is 0.1~1.6 megapascal.
Fig. 4 is shown in control module for handling the circuit of wind pressure sensor signal, the current signal of wind pressure sensor
It for 4~20mA, is inputted by J1, is converted to 600~3000mV voltage signal by 150 Ohmic resistances, is input to the ADC of single-chip microcontroller
Port.
Present apparatus stucco electric pneumatic valve can use the normally opened electric pneumatic valve of locomotive.
In the prior art, locomotive head generally has there are four stucco position, i.e. the near front wheel, off-front wheel, left rear wheel and the right side
Rear-wheel, this is just corresponding, and there are four sandboxes, wherein the sandbox of the near front wheel and off-front wheel shares a stucco electric pneumatic valve, part knot
Structure be referred to as before to stucco, the sandbox of left rear wheel and off hind wheel shares another stucco electric pneumatic valve, after which is referred to as
To stucco.Meanwhile stucco pedal (or stucco button) is generally two, to stucco and backward stucco before respectively corresponding.Actually answer
In, according to the stucco position to be carried out automatically controlling, sub-control box can be arranged on one or more sandbox branch road, it can also
Being arranged sub-control box on a stucco electric pneumatic valve main line, sub-control box can also be separately positioned on to sandbox branch and stucco electricity
On empty valve main line (as shown in Figure 8), these embodiment within the protection domain of this patent..
If there are multiple stucco positions in the control system of a locomotive head, and this control is installed additional at multiple stucco positions
Device processed then needs to be arranged multiple sub-control box in the control system, these sub-control box can share an electric cabinet, still, electricity
Stucco relay in control case obviously should be arranged multiple, correspond respectively to each sub-control box.
Assuming that forward direction stucco and after respectively set a sub-control box on original stucco electric pneumatic valve main line to stucco, by locomotive original
Have control system reform for it is a kind of can simultaneously to the preceding stucco control system carried out automatically controlling to stucco and backward stucco, and
The control system be used only an electric cabinet, then can by each interface organization of the electric cabinet at four air plug interfaces (respectively with
1#, 2#, 3#, 4# definition), each interface set-up mode can (locomotive in following each tables refers to SS as given a definition4No. 0778 machine
Vehicle):
1 direction of advance stucco of table controls 1# air plug (4 line)
2 direction of retreat stucco of table controls 2# air plug (4 line)
Table 33# air plug (7 line)
Table 44# air plug (5 line)
This patent inventors discovered through research that, ideally, stucco amount should be with locomotive speed at certain ratio
Relationship, when speed is slow, stucco amount is small, and when speed is fast, stucco amount is big.Meanwhile inventor passes through theoretical research and a large amount of simulation
Experiment discovery, in the case where wind pressure is certain, the opening time of locomotive electric pneumatic valve and stucco amount are substantially proportional to relationship, in addition,
The size of wind pressure also has a certain impact to stucco amount, and the curved line relation of wind pressure Yu stucco amount can be fitted by many experiments.
Therefore, as long as the speed and the wind pressure of stucco the two parameters of acquisition locomotive, control sub-control box stucco electric pneumatic valve can be passed through
The mode of opening time controls the stucco amount of locomotive.
In order to realize this automatic control mode, inventor devises utility model device.The device has extremely strong
Integration and ease for use, when being transformed to original locomotive, only need to be additionally arranged at the bottom sub-control box in locomotive, be truncated original gas circuit and with
Sub-control box series connection, while corresponding conducting wire being connect with electric cabinet.In this way, entire transformation process is simple and easy, this also makes
It obtains the utility model and is highly convenient for promotion and application.Meanwhile it can also be protected by the design of photoelectric isolating circuit and disconnect switch
Hinder the utility model and keep relatively independent with locomotive original structure, can control the utility model from entire when necessary
It is cut off completely in system, the normal operation without influencing the original stucco control system of locomotive.
In short, the utility model is simple in sturcture, ingenious in design, and it is easy to implement, be conducive to promote existing locomotive sand-spraying system
Automatization level, and then improve locomotive operation stability and safety.Meanwhile the utility model is easy to apply, Ke Yifang
Just upgrading is transformed to existing locomotive, thus there is extremely strong application prospect and economic benefit.
It should be pointed out that the above specific embodiment is the specific case of this patent implementation, without also can not
All implementations of this patent can be covered, therefore the restriction to the scope of this patent cannot be regarded as；All and above case
Belong to the implementation of same idea or the assembled scheme of above-mentioned several schemes, within the protection domain of this patent..
Claims (6)
1. a kind of locomotive sand-spraying control device, it is characterised in that: including electric cabinet and sub-control box, wind pressure is equipped in the sub-control box
There is gas circuit entrance, gas circuit outlet and circuit interface, the stucco electric pneumatic valve to connect for sensor and stucco electric pneumatic valve, the sub-control box
It connects between the gentle way outlet of gas circuit entrance, the wind pressure sensor is set between the gas circuit entrance and stucco electric pneumatic valve, institute
Stating circuit interface includes the sensor interface being connected with wind pressure sensor and the electric pneumatic valve interface being connected with stucco electric pneumatic valve, institute
It states stucco electric pneumatic valve and is in normally open；DC converter, control module and stucco relay are equipped in the electric cabinet, it is described
Electric cabinet has power supply interface, sensor connecting interface, electric pneumatic valve connecting interface, speed signalling interface, stucco signaling interface, institute
The input terminal for stating DC converter is connect with the power supply interface, the output end of the DC converter respectively with control module and
The connection of electric pneumatic valve connecting interface, the stucco relay are used to control the on-off of electric pneumatic valve connecting interface, and the speed signal connects
The control terminal of mouth, stucco signaling interface, sensor connecting interface and stucco relay is connect with the control module；It is described
Electric pneumatic valve interface is connect with the electric pneumatic valve connecting interface, and the sensor interface is connect with the sensor connecting interface.
2. locomotive sand-spraying control device according to claim 1, it is characterised in that: be additionally provided with excision on the electric cabinet and open
It closes, the excision switch is connected on the circuit between the stucco signaling interface and the control module.
3. locomotive sand-spraying control device according to claim 1, it is characterised in that: be additionally provided with touch on the electric cabinet
Screen, the touch screen are connect with the control module.
4. locomotive sand-spraying control device according to claim 1, it is characterised in that: the circuit interface of the sub-control box is served as reasons
The four core sockets that sensor interface and electric pneumatic valve interface collectively constitute, the sensor connecting interface and electric pneumatic valve connecting interface are total
It is located at four core air plug interfaces on electric cabinet with composition one.
5. locomotive sand-spraying control device according to claim 1, it is characterised in that: the speed signalling interface and the control
Photoelectric isolating circuit is equipped between molding block and between the stucco signaling interface and the control module.
6. locomotive sand-spraying control device according to claim 1, it is characterised in that: the input voltage of the DC converter
It is 110 volts, output voltage is 24 volts, and the control module is equipped with the power supply electricity for 24 volts of voltages to be converted to 5 volts of voltages
Road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821288013.3U CN208745992U (en) | 2018-08-10 | 2018-08-10 | A kind of locomotive sand-spraying control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821288013.3U CN208745992U (en) | 2018-08-10 | 2018-08-10 | A kind of locomotive sand-spraying control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208745992U true CN208745992U (en) | 2019-04-16 |
Family
ID=66079894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821288013.3U Active CN208745992U (en) | 2018-08-10 | 2018-08-10 | A kind of locomotive sand-spraying control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208745992U (en) |
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2018
- 2018-08-10 CN CN201821288013.3U patent/CN208745992U/en active Active
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