CN100416246C - Pressure type mechanical torque, rotation, angle and displacement driving sensor - Google Patents

Abstract

The pressure-type mechanical torque speed angle displacement transmission sensor device includes a driving part, a wheel shaft, a driven component, a torque adjuster assembly, a displacement transmission assembly and a clutch assembly. The torque adjuster assembly is assembled with the driving part through arc grooves and bolts on the driving part, and assembled on the wheel shaft. The displacement transmission assembly is assembled on the axle. The displacement transmission assembly has a compression spring, a compression plate, an internally and externally sleeved screw barrel and a displacement assembly, and a compression spring is arranged between the compression plate and the overrunning clutch assembly. The overrunning clutch assembly forms a clutch cooperation relationship with the driven component, and the driven component is assembled on the displacement transmission assembly through a bearing. There is a displacement sensing element on the displacement component, which corresponds to the displacement sensing element fixed near it, and senses a displacement signal. This device is installed at the terminal of the drive system, directly participates in the transmission control in a mechanical way, has the characteristics of mechanical self-adaptation, and collects torque and speed signals synchronously during the transmission process, providing a reliable basis for accurately controlling the output power of the motor (engine), making it The transmission system achieves high efficiency and energy saving.

Description

Pressure type mechanical torque speed angle displacement transmission sensor device

technical field

The invention relates to the technical field of mechanical transmission sensing, in particular to the sensing of parameters such as rotational speed and load in various mechanical transmissions, and in particular to pressure-type mechanical torque rotational speed angle displacement transmission sensing devices for motorcycles and electric bicycles.

Background technique

In order to realize intelligent transmission control in mechanical transmission, the load is an important detection item. At present, whether it is on ordinary transmission machinery or on vehicles, the detection of this index generally uses a variety of sensors to obtain relevant parameters respectively. Then make a comprehensive judgment, such as the load detection scheme of existing automobiles and motorcycles:

a) The throttle position sensor and speed sensor are used to judge the load, which is the so-called a-n system. Among them, a refers to the throttle position, and n refers to the speed. The ECU thinks that the same position of the throttle opening means the same load, and the different positions of the throttle opening means different load, so as to measure and judge the difference of the load.

b) The gas manifold pressure sensor and speed sensor are used to judge the load, which is the so-called p-n system. Among them, p refers to the pressure and n refers to the rotational speed. Because the load changes, the intake pressure will also change accordingly, and the intake pipe pressure sensor is used to judge the change of the load and detect the load.

In both schemes, fuel injection changes caused by load differences are corrected by the oxygen sensor.

Both of these two load detection systems are detected when the above sensors are not directly involved in the transmission, and the front end of the vehicle is not under the indirect state of load, and are obtained by detection and judgment on the engine. The requirements for the consistency of the engine for this measurement are Very strict, but often the engine manufacturer cannot guarantee that each engine must be calibrated separately; the cost of the intake pressure sensor is high, and the intake pressure fluctuates greatly, and the intake pressure generally fluctuates, and the intake valve The distance of the dissociated valve body is very short, and the intake pressure fluctuates greatly, which makes the ECU determine the real load inaccurately. Due to the extremely complicated working conditions of the vehicle, it is impossible for human beings to make accurate judgments, and often make artificial misoperations. Human misoperations and inaccurate operations mislead the engine's demand for load, and the engine will completely follow human operations. Command execution, even correction, is based on an inaccurate basis, thus causing fuel consumption losses and efficiency losses. The engine is the power source for driving. It does not monitor and control the power and efficiency loss and load changes, driving conditions and various complex working conditions brought about by all transmission mechanisms after the transmission of the engine. Therefore, the vehicle transmission and torque The detection of the changing situation is partial, and the judgments and instructions issued by the microcomputer are not completely reasonable and accurate. Moreover, the detection mechanism is complicated, the cost is high, and the cost performance is poor.

Contents of the invention

The purpose of the present invention is to provide a pressure-type mechanical torque rotational speed angle displacement transmission sensor device suitable for various mechanical transmission processes, especially suitable for motorcycles and electric bicycles. It is installed at the terminal of the drive system and directly participates in mechanical transmission. Transmission control, synchronously collect torque and speed signals during the transmission process, quickly measure the changes of various parameters such as vehicle start, idle speed, various loads and their alternating moments and transitions, and achieve timely and accurate control of the motor (engine) High output power, high efficiency and energy saving, with mechanical self-adaptive characteristics.

Technical scheme of the present invention is as follows:

The pressure-type mechanical torque speed angle displacement transmission sensing device includes a driving part, a wheel shaft, a driven component, a torque regulator assembly, a displacement transmission assembly and a clutch assembly. The torque adjuster assembly is assembled with the active part through arc grooves and bolts on the driving part, and the torque adjuster assembly is also integrally assembled on the wheel shaft. The displacement transmission assembly is mechanically assembled on the axle through rollers. The displacement transmission assembly has a compression spring, a pressure plate, an inner and outer screw barrel and a displacement assembly. The components are connected, and a compression spring is installed between the pressure plate and the overrunning clutch assembly. The overrunning clutch assembly forms a clutch cooperation relationship with the driven component, and the driven component is assembled on the displacement transmission assembly through a bearing. There is a displacement sensing element on the displacement component, which corresponds to the displacement receiving element fixed nearby to sense the displacement signal, and the sensing element circuit is connected to the sensor circuit board.

The overrunning clutch assembly has a seat cover connected to the wheel shaft, the seat cover directly or indirectly has an overrunning pawl, and the overrunning ratchet matched with the overrunning pawl clutch is fixed on the driven assembly.

The compression spring is sleeved on the wheel shaft, one end is pressed on the pressure plate through a bearing, and the other end is pressed on the seat cover of the overrunning clutch assembly through a roller.

The displacement assembly includes a displacement nut sleeved outside the screw barrel, a push plate or a push rod connected to the displacement nut, and a displacement plate fixedly connected to the end of the push plate or push rod, and the displacement sensing element is mounted on the displacement plate , the push plate or push rod is movably connected with the overrunning clutch.

A rotational speed sensing element is installed on the driven assembly, which corresponds to a rotational speed receiving element fixed near it, and senses rotational speed signals.

The two ends of the wheel shaft are rotatably matched with the fixed support member through bearings. The displacement receiving element and the rotational speed receiving element respectively corresponding to the displacement sensing element on the displacement disc and the rotational speed sensing element on the driven assembly are fixed on the sensor mounting part, and the sensor mounting part is then fixed on the support.

In addition, the second active part can also be installed outside the torque regulator assembly or outside the clutch assembly. In this way, when there are two power sources, one power source is insufficient, and the other power source is adaptively compensated.

The driving part of the present invention can be a driving wheel, a driving disc or other similar structures. The arc groove on the active part is used to limit the torsion angle range of the torsion spring, and the arc is determined according to the initial load and the maximum load.

The advantages of the present invention are: the device is installed at the terminal of the drive system, and while directly participating in the transmission, simultaneously detects the torque and speed signals for the subsequent computer processing and control mechanism to make accurate judgments and timely control the power of the motor or engine output. In the process of transmission, it can measure hundreds of continuous linear automatic stepless detections per second, and quickly respond to changes in various parameters such as startup, idle speed, various load states, load alternation moments and transitions, and the obtained signals are more accurate. Accurate and timely, timely control the running state of the vehicle to achieve the purpose of high efficiency and energy saving, provide the most reliable foundation for intelligent driving, and avoid the disadvantages caused by inaccurate operation control and zero start. And lay the foundation for setting the desired ideal operation mode according to the load of special demand, the magnitude of torque and other specific use needs. The device directly participates in the transmission, and also has the characteristics of mechanical self-adaptation.

Description of drawings

Fig. 1 is a structural diagram of the present invention;

Fig. 2 is a structural diagram of the driving wheel in the figure.

Detailed ways

The present invention will be described in detail below in conjunction with specific examples, and the protection of the present invention is not limited to the following examples.

Referring to Fig. 1, the structure is a pressure-type mechanical torque rotational speed angle displacement transmission sensing device installed on the rear wheel shaft of an electric bicycle or motorcycle, and has a driving wheel 1, a wheel shaft 12 and a driven assembly, and the driving wheel 1 is an electric bicycle or Driven wheel in the large transmission system of motorcycle, wheel shaft 12 is the rear axle of electric bicycle or motorcycle, and driven component is the flower basket assembly of electric bicycle or motorcycle in this example. In addition, the device also has a displacement transmission assembly, an overrunning clutch assembly, a torque regulator assembly, a displacement sensing element, a sensing circuit board, a sensor mounting part and a second driving wheel.

Referring to Fig. 1 and Fig. 2, an arc-shaped groove 30 is evenly opened on the driving wheel 1, and several small displacement rollers 24 are arranged therein. The torque adjuster assembly includes a torque adjustment plate 28, a bearing seat 27 and a torque adjustment fixing ring 25. The torque adjustment plate 28 is connected with the displacement small roller 24 in the arc groove 30 of the driving wheel through a bolt 29, and is integrated with the driving wheel 1 , the drive wheel 1 and the torque adjuster assembly can rotate relative to each other, and the rotation angle is within the arc range limited by the arc groove 30 (when assembling, first adjust the torque of the butterfly spring according to the load requirements of the vehicle, and then fix the bolts), the torque adjustment plate 28 is engaged with the end face of the bearing seat 27 installed on the wheel shaft 12, and then the torque adjustment plate 28 and the bearing seat 27 are screwed by the torque adjustment fixing ring 25. The displacement transmission assembly includes a screw barrel 22 , a displacement assembly, a pressure plate 4 and a butterfly spring 7 , and the displacement assembly includes a displacement nut 3 , a push plate 18 and a displacement disk 17 . The screw tube 22 is fixedly connected with the central hole of the driving wheel 1, and the screw tube 22 is provided with a displacement chute in the axial direction, for the pressure plate 4 to pass through and limit it so that the pressure plate 4 can only move axially, and can move along with the The screw mandrel barrel 22 rotates integrally. The outer circle of the pressing plate 4 is connected with the displacement nut 3 that is enclosed within the screw mandrel tube 22, and the displacement nut 3 is connected with the push plate 18 again, and the push plate 18 passes through the gap of the overrunning clutch, and its end is connected with the displacement disc 17. The butterfly spring 7 in the screw barrel 22 is sleeved on the wheel shaft 12, one end is pressed against the side of the pressure plate 4 through the bearing 5, and the other end is pressed against the inner side of the seat cover 11 of the overrunning clutch assembly through the roller 10. Torque is transmitted between the assembly and the overrunning clutch assembly. The roller 10 is also the support between the axle 12 and the screw tube 22 . The overrunning clutch includes a seat cover 11, an overrunning ratchet 20 and an overrunning ratchet 21. The seat cover 11 is integrally connected with the wheel shaft 12, rotates with the wheel shaft 12, and is set on the screw barrel 22 from the end, and a needle roller is installed between them. 16. The outer ring of the seat cover 11 has an overrunning ratchet 20 (which can be integrally formed or assembled by separate parts), and the overrunning ratchet 21 is fixed on the bearing seat of the driven component to form an overrunning clutch relationship. The moving assembly includes a flower basket 23, bearings 2 and 6 arranged at both ends of the flower basket 23, and is used to form a support between the flower basket assembly and the displacement sensing assembly, wherein a bearing seat connected to the flower basket 23 has a ratchet tooth 21, it forms an overrunning clutch relationship with the overrunning pawl 20 of the overrunning clutch, and transmits the load of the basket to the overrunning clutch assembly.

The fixed support 13 supporting the wheel shaft 12 is a fixed connection shaft between the vehicle frame and the rear wheel, on which a cover-shaped sensor mounting part 9 is fixedly connected, and a rotational speed sensing element 19B is arranged on the ring of the flower basket 23. A corresponding speed receiving element 19A is provided on the outside of the component, a displacement sensing element 8B is provided on the circumference of the displacement disc 17, and a displacement receiving element 8A corresponding to the displacement sensing element is provided on the inside of the sensor mounting part. The sensor element is connected with the sensor circuit board 15 arranged on the sensor installation part, and the sensor circuit board 15 transmits the signal to the external processing part. Sensing elements can be differential, variable pressure linear, self-inductive, eddy current, electrical, level sensing, resistive, infrared, optical fiber, ultrasonic and other existing mature sensors element.

If this device is used for electric bicycle, can adopt electric and manpower double-chain drive structure, the driven wheel of its manpower drive mechanism is the second driving wheel 14 of this device can be installed on the clutch seat cover, can reach manpower to drive mainly , the effect of power adaptive compensation.

In addition, as required, the displacement push plate can also be replaced with a displacement push rod, and its functions are exactly the same.

Working process: When the vehicle starts and moves within the set initial load range, the driving wheel gets power from the external motor or engine to rotate, drives the butterfly spring, transmits the power to the clutch assembly, and finally drives the driven component, that is, the flower basket assembly. Drive the wheel, because there is no load or the load is less than the set load at this time, the displacement transmission assembly is also rotating synchronously at this time, and the displacement disc does not displace.

When the vehicle load is greater than the set initial load, the load of the flower basket assembly is transmitted to the overrunning clutch assembly, and the overrunning clutch assembly transmits the load to the butterfly spring through the axle. Under the action, the belleville spring is compressed, the torque adjuster assembly and the driving wheel rotate relatively (the angle is within the set maximum load range), and the displacement plate generates displacement. In different load states, different displacements are generated, and the digital signal is continuously transmitted to the subsequent micro-processing device through the displacement sensing element and the rotational speed sensing element, and the micro-processing device uses the displacement and rotational speed digital signals to calculate the torque, Angle and other related parameters, and get the required power, command the motor or engine to compensate in real time; when the load decreases, the butterfly spring rebounds adaptively, and the power is automatically reduced, so that the two forces are constantly alternating, and the displacement plate is constantly changing. The ground moves back and forth, and the engine or motor is instructed to make timely and accurate judgments, so as to achieve the purpose of high efficiency, energy saving and intelligent drive, and avoid the disadvantages caused by inaccurate operation control and zero start.

Claims (7)

1. Pressure type mechanical torque, rotation, angle and displacement driving sensor comprises driving link, wheel shaft and driven subassembly, it is characterized in that: also have torque regulator assembly, displacement drive assembly and overdrive clutch assembly;

The torque regulator assembly is assembled into one by the deep-slotted chip breaker on the driving link, bolt and driving link, and the another body of torque regulator assembly is assemblied on the wheel shaft;

The displacement drive assembly is assemblied on the wheel shaft by idler wheel mechanism, the displacement drive assembly have stage clip, pressing plate, inside and outside the screw mandrel tube and the displacement component that are nested, screw mandrel tube and driving link are fixed, pressing plate is inserted in the axially open limit sliding chutes of screw mandrel tube, the cylindrical of pressing plate is connected with displacement component, between pressing plate and the overdrive clutch assembly stage clip is housed;

Overdrive clutch assembly and driven subassembly form the clutch matching relationship, and driven subassembly is assemblied on the displacement drive assembly by bearing;

Displacement sensor is arranged on the displacement component, corresponding with fixing displacement receiving element in its vicinity, the inductive displacement signal, the sensing element circuit connects the sensor line plate;

The revolution speed sensing element is installed on the driven subassembly, corresponding with fixing rotating speed receiving element in its vicinity, the induction tach signal.

2. sensing device according to claim 1 is characterized in that: overdrive clutch assembly has the cover for seat that is connected on the wheel shaft, and cover for seat directly or indirectly has and surmounts ratchet, and surmounts the ratchet that surmounts that ratchet clutch matches and then is fixed on the driven subassembly.

3. sensing device according to claim 1 and 2 is characterized in that: compression spring sleeve is on wheel shaft, and an end is pressed on the pressing plate by bearing, and the other end is pressed on the cover for seat of overdrive clutch assembly by roller.

4. sensing device according to claim 1 and 2, it is characterized in that: displacement component comprises and is enclosed within screw mandrel tube outer displacement nut, the push pedal or the push rod that link to each other with the displacement nut and is fixedly connected on push pedal or the displacement dish of push rod end, displacement sensor is contained on the displacement dish, push pedal or push rod pass overdrive clutch assembly, and connect the displacement dish.

5. sensing device according to claim 4, it is characterized in that: displacement receiving element and the rotating speed receiving element corresponding respectively with displacement sensor on the displacement dish and the revolution speed sensing element on the driven subassembly are fixed on the sensor installing component, the sensor installing component then is fixed on the support member, and described support member is the fixed connection shaft of vehicle frame and trailing wheel.

7. sensing device according to claim 1 and 2 is characterized in that: the wheel shaft two ends are rotatably assorted by bearing and the support member of fixing, and described support member is the fixed connection shaft of vehicle frame and trailing wheel.

8. sensing device according to claim 1 and 2 is characterized in that: second driving link is housed outside the torque regulator assembly or outside the overdrive clutch assembly.

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