CN201917424U - Engineering machinery engine power detecting device - Google Patents
Engineering machinery engine power detecting device Download PDFInfo
- Publication number
- CN201917424U CN201917424U CN2010206827640U CN201020682764U CN201917424U CN 201917424 U CN201917424 U CN 201917424U CN 2010206827640 U CN2010206827640 U CN 2010206827640U CN 201020682764 U CN201020682764 U CN 201020682764U CN 201917424 U CN201917424 U CN 201917424U
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- engine
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Abstract
The utility model discloses an engineering machinery engine power detecting device, which is characterized in that: a coupling spindle is connected with an engine power output mechanism and a power input shaft of a driven mechanism; two ends of a coupling shell are respectively connected with an engine flywheel shell and a driven mechanism shell; a coupler is provided with a torsion induction device, a torsion signal transmitting primary coil and a power supply receiving secondary coil; the coupling shell is provided with a power supply transmitting secondary coil, a secondary coil for obtaining a torsion signal, and a junction box comprising a power switching circuit, a torsion signal modulating circuit and an external interface; the torsion signal transmitting primary coil and a torsion signal receiving secondary coil are in electromagnetic coupling; and a power supply transmitting primary coil and the power supply receiving secondary coil are in electromagnetic coupling. The engineering machinery engine power detecting device has the advantage that the structure is simple and compact structure, and the implementation and maintenance are easy.
Description
Technical field
The utility model relates to a kind of engineering machinery engine power pick-up unit.
Background technology
Measuring engineering machinery engine output, to receive moment of torsion with hydraulic pump be very necessary, especially along with to the improving constantly of the various monitoring requirements of engineering machinery, and this measurement and the monitoring necessity more that becomes.For the hybrid power engineering machinery of energy-saving and emission-reduction, for the dynamic absorption that realizes the unnecessary power of engine be able to timely power replenish when engine power is not enough, it is essential that this measurement and monitoring have just become for now.
But because the engine nacelle arrangement space of engineering machinery is narrow and small, reasons such as common torque detecting apparatus installing space is big, complex structure, installation and maintenance inconvenience, for the power of existing engineering machinery engine detect with monitoring technology mainly be that hydraulic fluid flow rate by the indirect detection hydraulic pump and pressure converse the method that the mode of engine output is measured indirectly by calculating again.
In the prior art owing to need carry out conversion Calculation by the hydraulic fluid pressure and the flow of hydraulic pump output, and the efficient that the hydraulic oil of hydraulic pump output exists temperature and viscosity change and hydraulic pump to change makes conversion result and actual result error greatly, can not truly reflect the actual power that engine output and hydraulic pump receive.Have and directly to measure the defective low, can only be used for general power trend analysis usually, can not be used for engine and hydraulic pump are carried out control of load accurate quantification and monitoring with measuring accuracy.
For this reason, 03121677.3 patent shows a kind of hydraulic oil pump that has torque sensor, but because its torque sensor is arranged in the housing of hydraulic oil pump, makes the complex structure of hydraulic pump, cost increases, and also makes the maintenance and the maintenance difficult of hydraulic pump and torque sensor simultaneously.And, because, adopted magnetically elastic torque sensor, if like this magnetic shielding not the good general cause the hydraulic pump parts to be magnetized and abrasive dust in the easy suction oil, cause hydraulic pump parts wear fault.Thereby the existing hydraulic oil pump that has torque sensor has the defective of complex structure, cost height, poor reliability, maintenance and repair difficulty, is difficult in actual applications apply.
The utility model content
Technical problem to be solved in the utility model is to propose a kind of engineering machinery engine power pick-up unit, and this project mechanical engine power pick-up unit has advantage simple in structure, compact, easy to implement and that be easy to safeguard.
Technical solution of the present utility model is as follows:
A kind of engineering machinery engine power pick-up unit, coupling spindle connects the power input shaft of engine power output mechanism and follower; The two ends of coupling housing join with flywheel shell of engine and follower housing respectively; Be provided with the Torque sensor unit on coupling spindle, coupling spindle is provided with torque signal transmission primary coil and power supply receives secondary coil; On coupling housing, be provided with the power delivery primary coil, be used to obtain the secondary coil of torque signal and comprise the power supply access and the terminal box of signal output interface, power-switching circuit and signal modulation circuit; Torque signal transmission primary coil and torque signal receive secondary coil and carry out electromagnetic coupled; Power delivery primary coil and power supply receive secondary coil and carry out electromagnetic coupled.
Described engineering machinery engine power pick-up unit also comprises a photoelectricity speed detector, and the gear ring of described photoelectricity speed detector and sensor are located at respectively on above-mentioned coupling spindle and the coupling housing.
Terminal box is installed on the coupling housing, and described power supply access and signal output interface adopt any one among CAN bus, serial ports, LIN bus or the USB.
The Torque sensor unit is the torque sensor based on foil gauge, electric capacity, inductance, piezoelectricity, magnetoelasticity or magnetic resistance, and described follower is hydraulic pump, transmission for vehicle or torque converter.
Described moment of torsion induction installation is for adopting strain bridge as the sensitive element of measuring moment of torsion.
The power induction out-secondary is connected to rectification circuit and filtering circuit.
The principle of work of engineering machinery engine power pick-up unit is: the power input shaft that connects engine power output mechanism and follower by coupling spindle; The two ends of coupling housing join with the housing of flywheel shell of engine and follower respectively; Be provided with the Torque sensor unit on shaft coupling, electric energy required on the shaft coupling transmits in the mutual inductance mode by the coil that branch is located on shaft coupling and the coupling housing; On coupling housing, be provided with the terminal box that comprises power supply access and signal output interface, power-switching circuit and signal modulation circuit, the torque signal that the Torque sensor unit obtains is transferred in the treating apparatus that is provided with on the coupling housing by coil mutual inductance mode, thereby realizes that moment of torsion detects.The Torque sensor unit is the torque sensor based on line of tension, foil gauge, electric capacity, inductance, resistance, magnetoelasticity or magnetic resistance; Described follower is hydraulic pump, transmission for vehicle or torque converter.By the rotating speed of photoelectricity speed detector measurement engineering machinery engine, the gear ring of described photoelectricity speed detector and sensor are located at respectively on above-mentioned coupling spindle and the coupling housing.
The utility model is attached to housing that engine is connected with hydraulic pump and the method on the coupling shaft respectively by the torque sensor parts with prior art, reduced the installing space of torque sensor, thereby making to be installed on the limited engineering machinery in space becomes possibility.Simultaneously, adopt interior circle of connection axle head cylindrical and engine flywheel installation counterbore and end face thereof to carry out installing and locating, make that installation is quick, convenient, need not any adjustment.Thereby both made and installed and used, safeguarded very convenient, guaranteed again that the pick-up unit working stability was reliable.
Because the utility model device adopted above method, what made full use of existing engineering machinery engine and hydraulic pump is connected having living space of housing and coupling shaft, makes very compactness of structure to make random installation become possibility.
Simultaneously, because the utility model device had both been realized being connected combining closely of housing with engine, possess the independence of torque detecting apparatus again, its manufacturing can independently realize.And can select for use different existing moments of torsion to pass the device technology according to different measuring accuracy requirement, manufacturing cost and reliability requirements.Thereby make in batches for commercialization, reduce cost and provide convenience.
Beneficial effect:
The utility model at the defective of prior art provide a kind of simple in structure, volume is little, engineering machinery engine power that connection can conveniently be installed detects the autonomous device of measuring.This device both can be used for the real vehicle kinetic measurement of engineering machinery engine power, and the power signal that can utilize this device to detect simultaneously again carries out hydraulic system load control.
Another purpose of the present utility model provides and a kind ofly is used to realize that the real vehicle that will be attached to engineering machinery engine power based on the non-contact torque sensor of prior art detects the method for measuring.
The utility model will be integrated into respectively based on the non-contact torque sensor of prior art and be connected on the housing of combination with hydraulic pump with engine, make this project mechanical engine power pick-up unit simultaneously and the coupling spindle that is connected with the hydraulic pump drive input shaft of engine power output mechanism, thereby make this device have simple in structure, compact advantage.
Engineering machinery engine power pick-up unit of the present utility model is easy to manufacture, cost is lower.
The disclosed engineering machinery engine power of the utility model pick-up unit can be widely used in moment of torsion and/or the rotating speed that transmits between detection and/or control hydraulic pump and engine, and the signal that it measured can be used for the test analysis and the real vehicle optimal control of the engineering machinery of variety of way.
Simultaneously, the utility model can be advantageously used in the transmission of power test and the control device of multiple machinery, as torque sensor is attached to variator and or the power input shaft of torque converter on, be used to detect the transferring power of vehicle.
The utility model provides the method that the non-contact torque sensor based on prior art is attached to the housing that is connected combination with hydraulic pump with engine and the coupling spindle that is connected with the hydraulic pump drive input shaft with the engine power output mechanism respectively simultaneously.Thereby make this device have advantage simple in structure, compact, that be easy to safeguard.
Just because of engaging with the effective of middle casing and middle coupling spindle, thereby make that this apparatus structure is simply compact, it is little to take up room, maintaining convenient, cost is lower, provide a kind of feasible apparatus and method with monitoring for realizing the detection of hydropress machinery real vehicle real-time follow-up.
Description of drawings
Fig. 1 is a kind of this device and engine, hydraulic pump scheme of installation;
Fig. 2 is the fundamental diagram of this utility model device;
Fig. 3 is an a kind of application example structural drawing of this device;
Fig. 4 is this device exemplary plot that has tach signal;
Fig. 5 illustrates another kind of application example figure according to the utility model method.
Label declaration: 1-hydraulic pump, 2-the utility model power pick-up unit, 11-casing of hydraulic pump joint flange, 111-casing of hydraulic pump joint flange locating flange, the 12-hydraulic pump driveshaft, 21-power pick-up unit coupling housing, 211-connects shell, the 212-power supply receives secondary coil, the 213-spacer ring, 214-signal transmission line circle, 215-connects the shell locating flange, 216-wiring circuit box, 217-photoelectricity rotating speed detector, 22-power pick-up unit coupling shaft, 221-elasticity shaft joint, 222-power delivery primary coil, the 223-coupling shaft, 224-Torque sensor unit, the 225-circuit board, the 226-signal receiving coil, 227-coupling shaft locating flange, 228-rotating speed gear ring, the 31-flywheel shell of engine, the 32-engine flywheel, 321-engine flywheel dish, 322-engine flywheel gear ring.
Embodiment
Below with reference to the drawings and specific embodiments the utility model is described in further details:
Embodiment 1:
Fig. 1 is the installation connection diagram of this device and engine, hydraulic pump.Among the figure bell housing of engine and casing of hydraulic pump joint flange respectively by casing of hydraulic pump joint flange locating flange be connected the two ends of shell locating flange axial location and be connected with power pick-up unit coupling housing, well-known engine power output is to export by the engine flywheel dish from the bent axle of engine, and hydraulic pump is a driving power of being accepted engine by its driving shaft.Be connected with hydraulic pump driveshaft 12 with engine flywheel dish 321 respectively at Fig. 1 medium power pick-up unit coupling shaft two ends, in transmission of power, bear the twisting action of engine output torque, thereby cause the STRESS VARIATION or the torsion distortion of coupling shaft 223.In existing torque sensor technology, this STRESS VARIATION or torsion distortion can be converted to detectable torque measurement by strain resistor, electric capacity, piezoelectricity, magnetoelasticity, corner phase differential etc.The right-hand member sending and receiving motivation of Fig. 1.
Fig. 2 is the fundamental diagram of this utility model device.When adopting different Torque sensor elements, in the utility model application example, adopted to be most widely used strain bridge as the sensitive element of measuring moment of torsion.The strain bridge that is bonded in the coupling spindle outside surface will produce an analog electrical signal when coupling spindle is subjected to the torsion torque, this analog electrical signal contactlessly is sent on the connection shell by coil mutual inductance mode after amplification and conversion process.Simultaneously, the input power supply also is contactlessly to be transferred on the coupling spindle by coil mutual inductance mode, powers for strain bridge and signal processing circuit.Transmit signal and supply power by coil inductance transformer mode, existing explanation in patent CN93240174.0.
Fig. 3 shows a sectional view based on this device of the present utility model.This device by a power pick-up unit coupling housing that combines the wiring circuit box that two mutual inductors are connected with outer examining system and strain bridge that combines two mutual inductors and an induction transmission torque, be no less than the power pick-up unit coupling shaft of a circuit board.
STRESS VARIATION or torsional deformation that the power pick-up unit coupling shaft of this device produces in the power transmission process are to be converted to the torque measurement amount by strain bridge.Modulate by one or two circuit board on this power pick-up unit coupling shaft by being combined in for this torque measurement amount, transmit by mutual inductance effect with the signal receiving coil that is combined in shell by the signal transmission line circle that is combined on this device coupling spindle through the signal after this circuit modulation, and power for the modulation circuit plate by mutual inductance effect by the power supply reception secondary coil that is combined on this device coupling spindle equally with the power delivery primary coil that is combined on the shell equally.On the excircle that connects shell, be combined with a wiring circuit box that comprises power supply access and signal output interface, power-switching circuit and signal modulation circuit and finish the measurement of different needs and the signal exchange of control purposes.
The above connects into an integral body in conjunction with being meant by modes such as bonding, riveted joint, welding or cooperations with one or more parts are equipped.
On power pick-up unit coupling shaft 22, paste and survey the twisting strain sheet and form strain bridge, constitute the Torque sensor unit.Two ends are combined with on axle: the secondary coil of a responsible AC power input; One or more printed circuit board (PCB)s (being responsible for AC power rectification, signal amplification and modulation); The primary coil of a signal output.On housing 21, be combined with: a primary coil of being responsible for providing power supply; The secondary coil that signal receives; A circuit box that includes torque signal modulation, power source conversion and external interface.Like this, power supply is realized non-contact transmission by two inductive coils that are combined in respectively on housing and the coupling spindle; The torque signal that strain bridge produces on the coupling spindle is realized non-contact transmission by the inductive coil that two other is combined in respectively on housing and the coupling spindle.
Because above-mentioned moment of torsion detection technique has been mature technology, not at this detailed description.Fundamental purpose of the present utility model is to provide a kind of torque detecting apparatus and the method that this mature technology is combined by the middle coupling spindle with the middle casing that connects flywheel shell of engine and hydraulic pump end, connection engine flywheel and hydraulic pump.Just because of engaging with the effective of middle casing and middle coupling spindle, thereby make that this apparatus structure is simply compact, it is little to take up room, maintaining convenient, cost is lower, provide a kind of feasible apparatus and method with monitoring for realizing the detection of hydropress machinery real vehicle real-time follow-up.
Fig. 4 shows an engineering machinery power pick-up unit that has the tach signal pick-up unit.The photoelectricity rotating speed detector of tach signal pick-up unit also is arranged on above-mentioned power pick-up unit with the rotating speed gear ring and is connected on shell and the power pick-up unit coupling shaft.
Fig. 5 also shows a kind of example that adopts existing sensor.Be in this example adopted an improved sensor directly with special-purpose housing by inlaying be combined into.
In addition, the power pick-up unit according to basic design of the present utility model can also be integrated on the power input shaft of transmission for vehicle or torque converter.
The engine power that this engine power pick-up unit obtains (moment of torsion, rotating speed and power) signal can be used for the various controls and the monitoring of machine assembly.For example:
The housing two ends are connected with casing of hydraulic pump with flywheel shell of engine respectively, and adopt inside and outside circle to carry out installing and locating at two ends; The two ends of its coupling spindle are connected with the hydraulic pump drive input shaft with engine power output mechanism (flywheel) respectively, and adopt inside and outside circle and end face thereof to carry out installing and locating at the engine flywheel end, and are quick and easy for installation like this, need not adjustment.And, the housing of this device and coupling spindle be separate independent, non-contacting.
Housing is provided with the wiring circuit box, and the wiring circuit box comprises at least that power supply inserts with the external interface of signal output and circuit thereof, direct current and delivers stream power-switching circuit and detection signal modulation circuit.
The external interface definition that the power supply of wiring circuit box inserts and signal is exported can be any one among serial ports, CAN bus, LIN bus, the USB.
When this machine of engine did not have tach signal or its tach signal precision not to reach to require, its housing can combine a photoelectric sensor and induction fluted disc simultaneously respectively with coupling spindle, and the tach signal that power detects to be needed is provided.
Claims (6)
1. an engineering machinery engine power pick-up unit is characterized in that, coupling spindle connects the power input shaft of engine power output mechanism and follower; The two ends of coupling housing join with flywheel shell of engine and follower housing respectively; Be provided with the Torque sensor unit on coupling spindle, coupling spindle is provided with torque signal transmission primary coil and power supply receives secondary coil; On coupling housing, be provided with the power delivery primary coil, be used to obtain the secondary coil of torque signal and comprise the power supply access and the terminal box of signal output interface, power-switching circuit and signal modulation circuit; Torque signal transmission primary coil and torque signal receive secondary coil and carry out electromagnetic coupled; Power delivery primary coil and power supply receive secondary coil and carry out electromagnetic coupled.
2. engineering machinery engine power pick-up unit according to claim 1 is characterized in that, also comprises a photoelectricity speed detector, and the gear ring of described photoelectricity speed detector and sensor are located at respectively on above-mentioned coupling spindle and the coupling housing.
3. engineering machinery engine power pick-up unit according to claim 1 is characterized in that terminal box is installed on the coupling housing, and described power supply access and signal output interface adopt any one among CAN bus, serial ports, LIN bus or the USB.
4. engineering machinery engine power pick-up unit according to claim 1, it is characterized in that, the Torque sensor unit is the torque sensor based on foil gauge, electric capacity, inductance, piezoelectricity, magnetoelasticity or magnetic resistance, and described follower is hydraulic pump, transmission for vehicle or torque converter.
5. engineering machinery engine power pick-up unit according to claim 1 is characterized in that, described moment of torsion induction installation is for adopting strain bridge as the sensitive element of measuring moment of torsion.
6. according to each described engineering machinery engine power pick-up unit of claim 1-5, it is characterized in that the power induction out-secondary is connected to rectification circuit and filtering circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206827640U CN201917424U (en) | 2010-12-28 | 2010-12-28 | Engineering machinery engine power detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206827640U CN201917424U (en) | 2010-12-28 | 2010-12-28 | Engineering machinery engine power detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201917424U true CN201917424U (en) | 2011-08-03 |
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ID=44417218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206827640U Expired - Lifetime CN201917424U (en) | 2010-12-28 | 2010-12-28 | Engineering machinery engine power detecting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201917424U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141453A (en) * | 2010-12-28 | 2011-08-03 | 湖南山河智能机械股份有限公司 | Power detection method of engine of construction machinery and device thereof |
| CN109895124A (en) * | 2019-03-04 | 2019-06-18 | 河南科技大学 | A kind of vibration detection device and method of the rotary seedling taking manipulator of vegetable transplanting machine |
-
2010
- 2010-12-28 CN CN2010206827640U patent/CN201917424U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141453A (en) * | 2010-12-28 | 2011-08-03 | 湖南山河智能机械股份有限公司 | Power detection method of engine of construction machinery and device thereof |
| CN102141453B (en) * | 2010-12-28 | 2012-06-27 | 湖南山河智能机械股份有限公司 | Power detection method of engine of construction machinery and device thereof |
| CN109895124A (en) * | 2019-03-04 | 2019-06-18 | 河南科技大学 | A kind of vibration detection device and method of the rotary seedling taking manipulator of vegetable transplanting machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110803 Effective date of abandoning: 20120627 |