CN208774540U - Mileage measurement system and special vehicle with the mileage measurement system - Google Patents
Mileage measurement system and special vehicle with the mileage measurement system Download PDFInfo
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- CN208774540U CN208774540U CN201821295735.1U CN201821295735U CN208774540U CN 208774540 U CN208774540 U CN 208774540U CN 201821295735 U CN201821295735 U CN 201821295735U CN 208774540 U CN208774540 U CN 208774540U
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Abstract
The utility model relates to odometer technical fields.More particularly to a kind of mileage measurement system, including mileometer, selection switch, power takeoff control switch, power takeoff and first sensor；Power takeoff control switch is electrically connected with power takeoff, and can change the working condition of power takeoff；Power takeoff control switch controls and connects selection switch；Selection switch is electrically connected with mileometer and first sensor respectively, selects the on-off of switch control mileometer and first sensor；First sensor for obtaining mileage is connect with speed changer；The output end of speed changer and the input terminal of power takeoff connect；When force taking of parking operation, mileometer stops metering mileage.The utility model also provides a kind of special vehicle with the mileage measurement system.Compared with the prior art the utility model has the beneficial effects that: the mileage measurement system, can be avoided mileometer data distortion, the mileage measurement precision of the mileage measurement system is high, is not influenced by power takeoff working condition.
Description
Technical field
The utility model relates to odometer technical fields, and in particular to a kind of mileage measurement system and a kind of have should
The special vehicle of mileage measurement system.
Background technique
The special vehicles such as specialized truck will also realize other function in addition to the function of transport to be realized, realize other function
Can when, need to drive dedicated attachment device by the power of chassis power source in many cases, for example, dumper gear pump,
The hydraulic motor of blender, the water pump of fire fighting truck and the compressor for the vehicle that freezes etc..Above-mentioned during being connected by power, exhausted big portion
It point is the transmitting for realizing by power takeoff power.
Power takeoff (Power Take Off), abbreviation PTO, also known as power take off, generally by gear-box, clutch, control
Device processed is composed, and includes one or more groups of transmission gears in gear-box.The input terminal and power output axis connection of power takeoff, take
The output end of power device and the input axis connection for rising the attachment devices such as act pump or gear pump.For controlling the control of power takeoff working condition
Device processed can be realized being switched on or switched off for power takeoff power.Driver can manipulate control by way of remotely controlling
Device.Under normal conditions, driver is driving indoor by setting, and the solenoid valve that is electrically connected with the controller manipulates control
Device.
Power takeoff is classified according to drive mode, is divided into forward type power takeoff, middle power takeoff and rear-mounted power takeoff,
The power takeoff of power taking is known as forward type power takeoff at engine one or more power output end.For example, in concrete mixer truck
It can be configured with forward type power takeoff, the preposition power takeoff in concrete mixer truck is using the work directly from engine output end power taking
Make mode, not by the control of clutch, being advantageous in that can adapt to continues working demand for a long time for work.
It is known as middle power takeoff from the power takeoff of transmission power output power taking.Existing part heavy-duty tipper
Power takeoff be typically mounted on gearbox after cover.
It is known as rear-mounted power takeoff from the power takeoff of transfer gear or transmission shaft power taking.It is applied on existing part fire fighting truck and sets formula
Power takeoff.
It is set in power takeoff or postposition is more in line with vehicle distribution structure, it is easy to use and operate, also more there is practicability, because
This, in vehicle application, using most still middle power takeoff and rear-mounted power takeoff.
Although the topology layout of middle power takeoff or rear-mounted power takeoff has many advantages, middle power takeoff or
Still there are some drawbacks, drawback is mainly reflected in for the setting of rear-mounted power takeoff:
The work of power takeoff will affect the accuracy of measuring to VMT Vehicle-Miles of Travel of vehicle mileage meter, is especially embodied in and stops
Under vehicle power taking state.The reason is that, no matter middle power takeoff or rear-mounted power takeoff are installed in the rear end of speed changer, and
First sensor for measuring mileage is arranged in speed changer, so when vehicle is in force taking of parking, although the practical row of vehicle
Sail mileage not to be further added by, but speed changer still delivers power to power takeoff, the work of speed changer so that first sensor according to
So monitor that vehicle mileage increased.Since the signal of first sensor does not stop, then mileometer is in vehicle stop state
Under still will increase mileage, cause the situation of mileometer data distortion in this way, this can bring very big to the maintenance after sale of vehicle
Puzzlement.
Therefore, a kind of mileage measurement system that can be avoided the generation of mileometer data distortion situation is designed, is very necessary
, and it is very urgent.In addition, applying the mileage measurement system on the special vehicle with power takeoff, it may have ten
Divide important meaning.
In view of the above drawbacks, the utility model creator obtains originally practical new finally by prolonged research and practice
Type.
Utility model content
To solve above-mentioned technological deficiency, the technical solution adopted in the utility model is that the utility model is provided in one kind
Journey metering system, including mileometer, which is characterized in that it further includes selection switch, power takeoff control switch, power takeoff and first
Sensor；The power takeoff control switch is electrically connected with power takeoff, and can change the working condition of the power takeoff；It is described to take
Power device control switch controls and connects the selection switch；The selection switch is sensed with the mileometer and described first respectively
Device electrical connection, the on-off for selecting mileometer and the first sensor described in switch control；For obtaining mileage
The first sensor is connect with speed changer；The output end of the speed changer is connect with the input terminal of the power takeoff；Work as parking
When power taking operates, the mileometer stops metering mileage.
Preferably, the power takeoff further includes the first output end of power takeoff and power takeoff second output terminal；The power takeoff
First output end connects attachment device, and the power takeoff second output terminal is connect with driving vehicle bridge.
Preferably, described select switch for relay, the relay includes public terminal, normally closed terminal and actuation line
Circle；The power takeoff control switch controls the pull-in winding；The public terminal is connect with the mileometer, the normal-closed end
It is sub to be connect with the first sensor；When force taking of parking operation, it is dynamic that the power takeoff control switch controls the pull-in winding
Make, so that the mileometer and the first sensor disconnect, the mileometer stops metering mileage.
Preferably, the relay further includes normally opened terminal, the normally opened terminal sky is connect, and keeps open circuit.
Preferably, the power takeoff control switch includes two gears, it is neutral gear and force taking of parking gear respectively；When
When the power takeoff control switch is in neutral gear, the power takeoff only by the power takeoff second output terminal to driving vehicle
Bridge output power；When the power takeoff control switch is in force taking of parking gear, the power takeoff only passes through the power takeoff
First output end is to the attachment device output power.
Preferably, it further includes the second sensor for obtaining mileage, the second sensor and the power taking
The connection of device second output terminal；The relay further includes normally opened terminal, and the normally opened terminal is electrically connected with the second sensor；
When drive a vehicle power taking operation when, the power takeoff control switch controls the pull-in winding movement so that the mileometer disconnect with
The connection of the first sensor, the mileometer measure mileage by the second sensor.
Preferably, the power takeoff control switch includes three gears, it is neutral gear, force taking of parking gear and row respectively
Vehicle power taking gear；When the power takeoff control switch is in neutral gear, the power takeoff only passes through the power takeoff second
Output end to driving vehicle bridge output power；When the power takeoff control switch is in force taking of parking gear, the power takeoff is only
By first output end of power takeoff to the attachment device output power；It is taken when the power takeoff control switch is in driving
When power gear, first output end of power takeoff and the equal output power of power takeoff second output terminal.
Preferably, it is characterized in that, the first sensor is contact-type electronic kilometer sensor or contactless electricity
Sub- kilometer sensor.
Preferably, it is characterized in that, the power takeoff is sandwich power takeoff；The transmission output sandwich takes with described
The input terminal of power device is directly connected to, or is connected by transmission component.
The utility model further includes a kind of special vehicle comprising engine and speed changer, which is characterized in that it further includes
A kind of above-mentioned mileage measurement system；Described speed changer one end is connected with the engine, and the other end and the power takeoff input
End is directly connected to, or is connected by transmission component, and the power takeoff is middle or rear-mounted power takeoff.
Compared with the prior art the utility model has the beneficial effects that:
A kind of mileage measurement system provided by the utility model, it is suitable for can be avoided mileometer on special vehicle
The generation of data distortion situation is consistent by the mileage and actual travel mileage of mileage measurement system meters,
The mileage measurement precision of the system is high, is not influenced by power takeoff working condition.The utility model also provides a kind of with this
The special vehicle of mileage measurement system, the special vehicle are widely used.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of mileage measurement system in the utility model embodiment 1；
Fig. 2 is the attachment structure schematic diagram of relay in the utility model embodiment 1；
Fig. 3 is the structural schematic diagram of mileage measurement system in the utility model embodiment 2；
Fig. 4 is the attachment structure schematic diagram of relay in the utility model embodiment 2.
Appended drawing reference:
Engine 1, mileometer 2, relay 3, power takeoff control switch 4, power takeoff 5, transmission shaft 6, speed changer 7, first
Sensor 11, second sensor 12, public terminal 30, the first connecting pin 31, second connection end 32, the first output end of power takeoff 51
With power takeoff second output terminal 52.
Specific embodiment
Below in conjunction with attached drawing, the above and other technical features and advantages of the present invention are described in more detail.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable
The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is orientation based on the figure
Or positional relationship, it is merely for convenience of description the utility model, rather than the device or element of indication or suggestion meaning must have
There is specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, unless otherwise
Clear specific restriction.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection is also possible to be electrically connected or can communicate each other；It can be directly connected, the indirect phase of intermediary can also be passed through
Even, the connection inside two elements or the interaction relationship of two elements be can be, unless otherwise restricted clearly.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature is in the second feature " on " or " down "
It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.Moreover, first is special
Sign can be fisrt feature above the second feature " above ", " above " and " above " and be directly above or diagonally above the second feature, or only
Indicate that first feature horizontal height is higher than second feature.Fisrt feature under the second feature " below ", " below " and " below " can be with
It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combination and combination.
Embodiment 1
As shown in Figure 1, for the structural schematic diagram of mileage measurement system in the utility model embodiment 1；It is mentioned in the present embodiment
For a kind of mileage measurement system comprising mileometer 2, selection switch, power takeoff control switch 4 and first sensor 11.
Power takeoff control switch 4 and selection switch connection, 4 control selections switch on and off of power takeoff control switch.Power takeoff
Control switch 4 is connect with power takeoff 5, and power takeoff control switch 4 is also used to control the working condition of power takeoff 5.Selection switch point
Do not connect with mileometer 2 and first sensor 11, selection switch for control mileometer 2 and first sensor 11 be electrically connected it is logical
It is disconnected.First sensor 11 is connect with speed changer 7, and 7 power output of speed changer is converted VMT Vehicle-Miles of Travel by first sensor 11
Signal.7 output end of speed changer and the input terminal of power takeoff 5 are directly connected to, or are connected by transmission component, and wherein transmission component is excellent
It is selected as transmission shaft 6.It include the first output end of power takeoff 51, power takeoff second output terminal 52 on power takeoff 5.Power takeoff first exports
51 connection attachment device of end.Power takeoff second output terminal 52 is connect with driving vehicle bridge.
When executing force taking of parking operation, power takeoff control switch 4 cuts force taking of parking gear, power takeoff control switch 4
Power takeoff 5 is controlled, so that the power that speed changer 7 is transmitted to power takeoff 5 is exported by the first output end of power takeoff 51, thus by power
It is transferred to attachment device.4 control selections of power taking control switch switch simultaneously, so that first sensor 11 and mileometer 2 disconnect and connecting
It connects.Mileometer 2 stops metering mileage in force taking of parking.At this time, it may be necessary to vehicle stops, and therefore, 5 internal clutch of power takeoff
Cut off the path that power takeoff 5 transmits power along power takeoff second output terminal 52 to driving vehicle bridge.
When not executing power taking operation, power takeoff control switch 4 cuts neutral gear, and power takeoff 5 is driving power transmission
Case, 5 input terminal of power takeoff are directly connected to 7 output end of speed changer, or are connected by transmission component.The first output end of power takeoff 51
Power is not transmitted outward, and power takeoff second output terminal 52 transmits power to driving vehicle bridge, and switch is selected to make first sensor
11 remain with mileometer 2 and connect, and the mileage signal that first sensor 11 generates swimmingly passes to mileometer always, because
This, when not executing power taking operation, mileometer 2 records the increase of mileage always.First sensor 11 is electronic odometer sensing
Device.
Preferably, electronic odometer sensor is contact-type electronic kilometer sensor.Electronic odometer sensor and change
The output shaft of fast device 7 connects.
In addition, electronic odometer sensor can also be contactless electronic kilometer sensor.A kind of contactless electronic
Kilometer sensor example of practical application is as follows:
The first rotor, the output of the probe and speed changer 7 of electronic odometer sensor are connected on the output shaft of speed changer 7
The non-contact connection of the first rotor on axis.There is certain gap between the probe and the first rotor of electronic odometer sensor, this
A gap is preferably 1.4 ± 0.6mm.When the vehicle is running, the first rotor is rotated together with 7 output shaft of speed changer, when first turn
When some tooth of son turns to electronic odometer sensor probe corresponding position, the Sensitive Apparatus in probe is by first turn
Sub- magnetic fields export a low level, when the tooth of the first rotor is not aligned with sensor probe, the Sensitive Apparatus in probe
High level is not exported by magnetic fields.As soon as the every rotation week of 7 output shaft of speed changer in this way, sensor has multiple square wave arteries and veins
Signal output is rushed, these signals are transmitted to mileometer 2 through connection wiring harness.
Contactless electronic kilometer sensor is advantageous in that compared with contact-type electronic kilometer sensor: contact
Error can be generated between driving gear and the practical speed ratio of driven gear and theoretical velocity ratio in electronic odometer sensor, and it is non-contact
Formula electronic odometer sensor then eliminates the error, therefore the mileage measurement of contactless electronic kilometer sensor is more quasi-
Really, and the transmission parts that contact with each other are reduced, and spoilage is reduced with cost.
As shown in Fig. 2, for the attachment structure schematic diagram of relay in the utility model embodiment 1.In the present embodiment preferably
Ground selects switch for relay 3, and relay 3 includes public terminal 30, normally closed terminal 31, normally opened terminal 32 and pull-in winding.It takes
Power device control switch 4 controls pull-in winding electric power on-off.Public terminal 30 is electrically connected with mileometer 2, normally closed terminal 31 and first
Sensor 11 is electrically connected, and normally opened 32 sky of terminal connects.Pull-in winding is electrically connected with power takeoff control switch 4.
When not executing power taking operation, power takeoff control switch 4 cuts neutral gear, and power takeoff control switch 4 makes to be attracted
Coil blackout, mileometer 2, public terminal 30, normally closed terminal 31 and first sensor 11 are electrically connected, and mileometer 2 is passed by first
Sensor 11 normally measures mileage.
When executing force taking of parking operation, power takeoff control switch 4 cuts force taking of parking gear, power takeoff control switch 4
Pull-in winding is set to be powered, when pull-in winding is powered, pull-in winding movement disconnects the company of public terminal 30 and normally closed terminal 31
It connects, i.e. the connection of the disconnection of relay 3 mileometer 2 and first sensor 11, therefore in force taking of parking, although speed changer 7 is in
Working condition, but there is no corresponding mileage signals to pass to mileometer, and mileometer 2 stops metering mileage.Preferably, work as execution
When force taking of parking operates, public terminal 30 is connect with normally opened terminal 32, and 32 sky of normally opened terminal connects, so 2 not accounting of mileometer
Measure mileage.
The present embodiment also provides a kind of special vehicle with above-mentioned mileage measurement system comprising mileage measurement system,
Engine 1 and speed changer 7.The input terminal of speed changer 7 is connect with engine 1, the input terminal of speed changer 7 output end and power takeoff 5
It is directly connected to, or is connected by transmission component, wherein transmission component is preferably transmission shaft 6.Selection switch passes through first sensor
11 connect with speed changer 7.Power takeoff control switch 4 is connect with power takeoff 5.Power takeoff 5 can be connect with attachment device.
Preferably, at least there are two torque output mouths for the first output end of power takeoff 51 on power takeoff 5.
Preferably, power takeoff 5 is sandwich power takeoff.Preferably, power takeoff 5 is middle or rear-mounted power takeoff.
Embodiment 2
As shown in figure 3, for the structural schematic diagram of mileage measurement system in the utility model embodiment 2；It is mentioned in the present embodiment
For a kind of mileage measurement system comprising mileometer 2, selection switch, power takeoff control switch 4 and first sensor 11 and second
Sensor 12.
Power takeoff control switch 4 divides three gears: neutral gear, force taking of parking gear and driving power taking gear.Power takeoff control
Switch 4 and selection switch connection, 4 control selections switch on and off of power takeoff control switch.Power takeoff control switch 4 and power takeoff 5
Connection, power takeoff control switch 4 are also used to control the working condition of power takeoff 5.Selection switch is passed with mileometer 2, first respectively
Sensor 11 and second sensor 12 connect, and selection switch is for controlling mileometer 2 and first sensor 11 or second sensor 12
The on-off of electrical connection.
First sensor 11 is connect with speed changer 7, and first sensor 11 can convert vehicle for 7 power output of speed changer
Travel distance signal.7 output end of speed changer and the input terminal of power takeoff 5 are directly connected to, or are connected by transmission component, wherein passing
Dynamic component is preferably transmission shaft 6.
It include the first output end of power takeoff 51, power takeoff second output terminal 52 on power takeoff 5.The first output end of power takeoff 51
Connect attachment device.Power takeoff second output terminal 52 is connect with driving vehicle bridge.
Second sensor 12 is connect with power takeoff second output terminal 52, and second sensor 12 can export power takeoff second
The power output at end 52 is converted into VMT Vehicle-Miles of Travel signal.
Second sensor 12 is electrically connected by selecting switch to select one with mileometer 2 with first sensor 11.
Second sensor 12 is electronic odometer sensor.Preferably, second sensor 12 is contact-type electronic mileometer
Sensor.Second sensor 12 and power takeoff second output terminal 52 connect.
In addition, second sensor 12 can also be contactless electronic kilometer sensor.Second sensor 12 is as a kind of
The example of practical application of contactless electronic kilometer sensor is as follows:
The second rotor, the probe of second sensor 12 and power taking are connected in power takeoff second output terminal 5 on power takeoff 5
The non-contact connection of the second rotor in device second output terminal 5.Have between the probe of second sensor 12 and the second rotor certain
Gap, this gap are preferably 1.4 ± 0.6mm.
When vehicle driving power taking, the second rotor is rotated together with power takeoff second output terminal 5, when bitrochanteric a certain
When a tooth turns to 12 sensor probe of second sensor corresponding position, the Sensitive Apparatus in probe is by the second rotor field
Effect one low level of output, when bitrochanteric tooth is not aligned with sensor probe, the Sensitive Apparatus in probe not by
High level is exported to magnetic fields.As soon as the every rotation week of power takeoff second output terminal 5 in this way, second sensor 12 has multiple sides
Wave pulse signal output, these signals are transmitted to mileometer 2 through connection wiring harness.
Contactless electronic kilometer sensor is advantageous in that compared with contact-type electronic kilometer sensor: contact
Error can be generated between driving gear and the practical speed ratio of driven gear and theoretical velocity ratio in electronic odometer sensor, and it is non-contact
Formula electronic odometer sensor then eliminates the error, therefore the mileage measurement of contactless electronic kilometer sensor is more quasi-
Really, and the transmission parts that contact with each other are reduced, and spoilage is reduced with cost.
When executing force taking of parking operation, vehicle stops, and power takeoff control switch 4 cuts force taking of parking gear, power takeoff
Control switch 4 controls power takeoff 5, so that the power that speed changer 7 is transmitted to power takeoff 5 is exported by the first output end of power takeoff 51,
To which power is transferred to attachment device.4 control selections of power taking control switch switch simultaneously, so that first sensor 11 and mileage
Table 2 disconnects.And since vehicle is in halted state at this time, power takeoff second output terminal 52 is not dynamic to driving vehicle bridge output
Power, therefore, the second sensor 12 connecting with power takeoff second output terminal 52 do not generate mileage signal.So mileometer 2 exists
When force taking of parking, stop metering mileage.At this time, it may be necessary to which vehicle stops, 5 internal clutch of power takeoff cuts off power takeoff 5 along power taking
Device second output terminal 52 transmits the path of power to driving vehicle bridge.
When not executing power taking operation, power takeoff control switch 4 cuts neutral gear, and power takeoff 5 is driving power transmission
Case, 5 input terminal of power takeoff are directly connected to 7 output end of speed changer, or are connected by transmission component.The first output end of power takeoff 51
Power is not transmitted outward, and power takeoff second output terminal 52 transmits power to driving vehicle bridge, and switch is selected to make first sensor
11 remain with mileometer 2 and connect, and the mileage signal that first sensor 11 generates swimmingly passes to mileometer always, because
This, when not executing power taking operation, mileometer 2 records the increase of mileage always.
When executing driving power taking operation, the incision driving power taking gear of power takeoff control switch 4, power takeoff 5, which will be originated from, to be become
The power of fast device 7 passes through the first output end of power takeoff 51, power takeoff second output terminal 52 respectively and exports outward, i.e., by dynamic branch
Transmission, power takeoff 5 both drove attachment device to move, and also provided the power that vehicle is advanced to driving vehicle bridge, took to reach driving
The purpose of power.When executing driving power taking operation, if large error can be generated by measuring mileage by first sensor 11.For
Error is avoided, it should be by second sensor 12 come measurement vehicle mileage travelled.
When power takeoff control switch 4 cuts driving power taking gear, power takeoff control switch 4 controls power takeoff 5, makes power takeoff
First output end 51 and the outside output power of power takeoff second output terminal 52.4 control selections of power taking control switch switch simultaneously,
The connection for cutting off mileometer 2 and first sensor 11, connect mileometer 2 with second sensor 12.So that mileage measurement system
In the case where driving a vehicle power taking, also can accurately measurement vehicle mileage.
As shown in figure 4, for the attachment structure schematic diagram of relay in the utility model embodiment 2.In the present embodiment preferably
Ground selects switch for relay 3, and relay 3 includes public terminal 30, normally closed terminal 31, normally opened terminal 32 and pull-in winding.It takes
Power device control switch 4 controls pull-in winding electric power on-off.Public terminal 30 is electrically connected with mileometer 2, normally closed terminal 31 and first
Sensor 11 is electrically connected, and normally opened terminal 32 is electrically connected with second sensor 12.Pull-in winding is electrically connected with power takeoff control switch 4
It connects.
When not executing power taking operation, power takeoff control switch 4 cuts neutral gear, and power takeoff control switch 4 makes to be attracted
Coil blackout, mileometer 2, public terminal 30, normally closed terminal 31 and first sensor 11 are electrically connected, and mileometer 2 is passed by first
Sensor 11 normally measures mileage.
When executing force taking of parking operation, power takeoff control switch 4 cuts force taking of parking gear, power takeoff control switch 4
Pull-in winding is set to be powered, when pull-in winding is powered, pull-in winding movement disconnects the company of public terminal 30 and normally closed terminal 31
It connecing, i.e. relay 3 disconnects the connection of mileometer 2 and first sensor 11, then connect public terminal 30 with normally opened terminal 32,
Mileometer 2 is electrically connected with second sensor 12.Therefore in force taking of parking, although speed changer 7 is in running order, power takeoff
There is no external output power, second sensors 12 to pass to mileometer 2, mileage without corresponding mileage signal for second output terminal 52
Table 2 stops metering mileage.
When executing driving power taking operation, the incision driving power taking gear of power takeoff control switch 4, power takeoff control switch 4
Pull-in winding is set to be powered, when pull-in winding is powered, pull-in winding movement disconnects the company of public terminal 30 and normally closed terminal 31
It connecing, i.e. relay 3 disconnects the connection of mileometer 2 and first sensor 11, then connect public terminal 30 with normally opened terminal 32,
Mileometer 2 is electrically connected with second sensor 12.When executing driving power taking operation, since power takeoff second output terminal 52 can be anti-
The situation of measurement actual travel is reflected, therefore, mileometer 2 obtains the actual travel mileage information of vehicle by second sensor 12,
Mileage measurement at this time is accurate.
The present embodiment also provides a kind of special vehicle with above-mentioned mileage measurement system comprising mileage measurement system,
Engine 1 and speed changer 7.The input terminal of speed changer 7 is connect with engine 1, the input terminal of speed changer 7 output end and power takeoff 5
It is directly connected to, or is connected by transmission component, wherein transmission component is preferably transmission shaft 6.Selection switch passes through first sensor
11 connect with speed changer 7.Power takeoff control switch 4 is connect with power takeoff 5.Selection switch also passes through second sensor 12 and power taking
Device 5 connects.Second sensor 12 is electrically connected by selecting switch to select one with mileometer 2 with first sensor 11.Power takeoff 5 can
It is connect with attachment device.
Preferably, at least there are two torque output mouths for the first output end of power takeoff 51 on power takeoff 5.
Preferably, power takeoff 5 is sandwich power takeoff.Preferably, power takeoff 5 is middle or rear-mounted power takeoff.
The above is only the preferred embodiments of the utility model, are merely illustrative for the utility model, rather than limit
Property processed.The structure and connection type etc. of each component may be changed in the utility model, all practical new at this
The equivalents and improvement carried out on the basis of type technical solution, should not exclude except the protection scope of the utility model.
Claims (10)
1. a kind of mileage measurement system, including mileometer, which is characterized in that its further include selection switch, power takeoff control switch,
Power takeoff and first sensor；The power takeoff control switch is electrically connected with power takeoff, and can change the work of the power takeoff
Make state；The power takeoff control switch controls and connects the selection switch；Selection switch respectively with the mileometer
It is electrically connected with the first sensor, the on-off of mileometer and the first sensor described in the selection switch control；For
The first sensor for obtaining mileage is connect with speed changer；The input of the output end of the speed changer and the power takeoff
End connection；When force taking of parking operation, the mileometer stops metering mileage.
2. a kind of mileage measurement system as described in claim 1, which is characterized in that the power takeoff further includes power takeoff first
Output end and power takeoff second output terminal；First output end of power takeoff connects attachment device, and the power takeoff second exports
End is connect with driving vehicle bridge.
3. a kind of mileage measurement system as claimed in claim 2, which is characterized in that it is described to select switch for relay, it is described
Relay includes public terminal, normally closed terminal and pull-in winding；The power takeoff control switch controls the pull-in winding；It is described
Public terminal is connect with the mileometer, and the normally closed terminal is connect with the first sensor；When force taking of parking operation, institute
It states power takeoff control switch and controls the pull-in winding movement, so that the mileometer and the first sensor disconnect,
The mileometer stops metering mileage.
4. a kind of mileage measurement system as claimed in claim 3, which is characterized in that the relay further includes normally opened terminal,
The normally opened terminal sky connects, and keeps open circuit.
5. a kind of mileage measurement system as described in claim 2-4 is any, which is characterized in that the power takeoff control switch packet
Two gears are included, are neutral gear and force taking of parking gear respectively；When the power takeoff control switch is in neutral gear, institute
State power takeoff only by the power takeoff second output terminal to driving vehicle bridge output power；When the power takeoff control switch is in
When force taking of parking gear, the power takeoff is only by first output end of power takeoff to the attachment device output power.
6. a kind of mileage measurement system as claimed in claim 3, which is characterized in that it further includes for obtaining mileage
Second sensor, the second sensor are connect with the power takeoff second output terminal；The relay further includes normally opened terminal,
The normally opened terminal is electrically connected with the second sensor；When power taking of driving a vehicle operates, the power takeoff control switch controls institute
Pull-in winding movement is stated, so that the mileometer, which is disconnected, passes through described the with the connection of the first sensor, the mileometer
Two sensor element mileages.
7. a kind of mileage measurement system as claimed in claim 6, which is characterized in that the power takeoff control switch includes three
Gear is neutral gear, force taking of parking gear and driving power taking gear respectively；When the power takeoff control switch is in neutral gear gear
Position when, the power takeoff only by the power takeoff second output terminal to driving vehicle bridge output power；When the power takeoff controls
When switch is in force taking of parking gear, the power takeoff only passes through first output end of power takeoff and exports to the attachment device
Power；When the power takeoff control switch is in driving power taking gear, first output end of power takeoff and the power takeoff
The equal output power of second output terminal.
8. a kind of mileage measurement system as described in claim 1-4,6,7 are any, which is characterized in that the first sensor is
Contact-type electronic kilometer sensor or contactless electronic kilometer sensor.
9. a kind of mileage measurement system as described in claim 1-4,6,7 are any, which is characterized in that the power takeoff is sandwich
Power takeoff；The input terminal of the transmission output and the sandwich power takeoff is directly connected to, or is connected by transmission component.
10. a kind of special vehicle comprising engine and speed changer, which is characterized in that it further includes as claim 1-9 is any
A kind of mileage measurement system；Described speed changer one end is connected with the engine, and the other end and the power takeoff input
End is directly connected to, or is connected by transmission component, and the power takeoff is middle or rear-mounted power takeoff.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821295735.1U CN208774540U (en) | 2018-08-13 | 2018-08-13 | Mileage measurement system and special vehicle with the mileage measurement system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821295735.1U CN208774540U (en) | 2018-08-13 | 2018-08-13 | Mileage measurement system and special vehicle with the mileage measurement system |
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| CN208774540U true CN208774540U (en) | 2019-04-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112440740A (en) * | 2020-12-01 | 2021-03-05 | 东风越野车有限公司 | Vehicle power take-off system and power take-off and calibration method thereof |
-
2018
- 2018-08-13 CN CN201821295735.1U patent/CN208774540U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112440740A (en) * | 2020-12-01 | 2021-03-05 | 东风越野车有限公司 | Vehicle power take-off system and power take-off and calibration method thereof |
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