WO2008046344A1 - Roue d'entraînement par gravité - Google Patents

Roue d'entraînement par gravité Download PDF

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Publication number
WO2008046344A1
WO2008046344A1 PCT/CN2007/070852 CN2007070852W WO2008046344A1 WO 2008046344 A1 WO2008046344 A1 WO 2008046344A1 CN 2007070852 W CN2007070852 W CN 2007070852W WO 2008046344 A1 WO2008046344 A1 WO 2008046344A1
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WO
WIPO (PCT)
Prior art keywords
wheel
power
gravity
pickup
rim
Prior art date
Application number
PCT/CN2007/070852
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English (en)
Chinese (zh)
Inventor
Zhiping Du
Original Assignee
Zhiping Du
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Filing date
Publication date
Application filed by Zhiping Du filed Critical Zhiping Du
Publication of WO2008046344A1 publication Critical patent/WO2008046344A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/10—Alleged perpetua mobilia
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for

Definitions

  • the invention relates to a wheel type power device for converting vehicle gravity into liquid power and converting liquid power into torque, and belongs to the technical field of engine or pump in mechanical engineering. Background technique
  • the second problem is "supply in short supply.” Even if some additional power is added, the total power (conversion power + supplemental power) is equal to or slightly greater than the reset resistance or rolling resistance and other loss resistance, and only maintains its own motion cycle, and there is no power output. For the vehicle, it only overcomes the rolling resistance and is not enough to overcome the acceleration resistance, the uphill resistance, the air resistance, the transmission power consumption and so on. Summary of the invention
  • the object of the present invention is to provide a gravity driving wheel which uses gravity generated by the vehicle's own weight and load as an energy source, converts the vehicle's gravity into hydraulic power, converts the hydraulic power into torque, and directly drives the wheel to realize the vehicle operation.
  • the present invention provides a gravity driving wheel comprising: a wheel mounted on an axle; a bracket located in the wheel and coupled to the axle; a power wheel located in the wheel, the shaft and the seat One end of the bracket is connected, and the wheel is arranged with the rim of the wheel for receiving and transmitting
  • the guiding vehicle carries gravity, and converts gravity into torque and drives the wheel to rotate; at least two virtual restraining wheels located in the wheel, the shaft of which is coupled to the other end of the bracket, the wheel and the wheel
  • the rim is telescopically coupled such that the power wheel and the at least two virtual restraining wheels are in a virtual restraint state with the wheel under the support of the bracket.
  • the power wheel includes: a pick-up device for receiving and conducting the vehicle to carry the gravity; a hydraulic system connected to the pick-up device, configured to receive the vehicle carrying gravity from the pick-up device, and convert the vehicle-bearing gravity into the hydraulic power, The hydraulic power is converted into torque and the wheel is rotated.
  • the hydraulic system includes: a pump cylinder connected to the pickup, configured to convert mechanical energy transmitted by the pickup into hydraulic energy, and generate a pressurized liquid flow; and a hydraulic motor to function as a collecting and conveying oil
  • the oil collecting header and the oil returning header for collecting the returning oil function are connected to the pump cylinder, and generate a continuous torque under the action of the pressurized liquid flow to drive the power wheel to rotate;
  • One end of the oil header is connected to the corresponding pump cylinder through a plurality of three-way oil pipes, the other end is connected to the oil inlet of the hydraulic motor, and a check valve that doubles as a charge port is provided;
  • the oil return flow One end of the pipe is connected to the corresponding pump cylinder through a plurality of three-way oil pipes, the other end is connected to the oil outlet of the hydraulic motor, and a one-way valve that doubles as the oil discharge port is provided.
  • the pump cylinder includes: a cylinder body in which a liquid is disposed; a pump cylinder piston disposed in the cylinder body and connected to the pickup device by a swinging piston rod for making the pick-up force when propelling
  • the liquid in the cylinder becomes a pressurized liquid flow;
  • an oil delivery check valve is disposed in the cylinder for inputting the pressurized fluid flow through the oil collection manifold into the hydraulic motor;
  • a check valve disposed in the cylinder body for returning oil returning the work of the hydraulic motor to the cylinder through the oil return manifold; adjusting bolts disposed in the cylinder In the body, it is used to adjust the stroke of the pickup to push the pump cylinder piston.
  • the pickup includes: a pickup arm; a swing shaft hole disposed at one end of the pickup arm for connecting the pump cylinder; a first pickup arm disposed at the The other end of the pickup arm opposite to the swing shaft hole extends outwardly from the rim of the power wheel to pick up the vehicle gravity and form an intrinsic lateral moment with the swing shaft hole; a lateral moment formed by the oscillating shaft hole and the first pick-up arm for connecting the pump cylinder piston to conduct the picked-up gravity; at least one second pick-up arm, at the swing shaft hole and the first The lateral moment formed by the pickup arm is sequentially spaced Providing a lever mechanism for forming a plurality of force points with the swinging shaft hole and the connecting shaft hole, and multiplying and pushing the thrust of the pump cylinder piston by a lever effect; the outer end of the at least one second picking force arm The longitudinal height between the transverse moments is sequentially increased to successively increase the stroke of the pump cylinder piston.
  • the power wheel and the rim of the wheel are nested along a normal line, and are connected at a lower portion of the inner edge of the rim of the wheel, so that an outer end of the pickup force receiving arm touches the
  • the inner edge of the rim of the wheel constitutes an internal and external ⁇ transmission force-transmitting mechanism; in the inner and outer ⁇ transmission force-transmitting mechanism, the pickup arm of the pickup extends out of the rim of the power wheel to pick up gravity to form an internal rolling resistance torque, At the same time, the pickup arm of the pickup presses against the inner edge of the rim of the wheel to form an outer rolling assist torque of the same length as the inner rolling resistance torque.
  • the wheel is further provided with: an auxiliary motor for outputting auxiliary motion control power to the power wheel by rotation, rotation speed and torque change; the power output wheel, the shaft hole and the auxiliary movement
  • the output shaft of the motor is rigidly connected, the wheel is connected to the inner edge of the rim of the wheel, or is connected to the inner edge of the rim of the virtual restraint wheel, or is connected to the inner edge of the rim of the wheel, and is used for directly to the rim of the wheel. Or indirectly output auxiliary power.
  • auxiliary motor is further connected to an externally known electronic control unit, and the auxiliary motor and its power output wheel, the power wheel and the externally known electronic control unit together constitute an auxiliary power input control device.
  • the above technical solution of the present invention provides a gravity driving wheel that converts vehicle gravity into power, and is a unique and compact device, which can realize that the vehicle is no longer equipped with a well-known engine, and the vehicle runs only consumes a small amount of electric energy, and does not consume Use fuel.
  • the beneficial effects of the present invention are embodied in:
  • the automatic flow rate variable causes the hydraulic system to have almost no flow loss. As the speed increases or slows, the hydraulic flow required by the hydraulic motor increases or decreases. However, since the liquid flow produced by each revolution of the power wheel is constant, the acceleration or slowing of the rotational speed also increases or decreases the liquid flow per unit time. At the same time, due to the complete hydraulic closed-loop system, the hydraulic motor discharges the actual flow rate including the internal leakage, liquid compression and other volume loss, and the pump cylinder can be re-entered into the hydraulic motor (piston leakage, pipeline flow loss, etc.). There are accumulators available at any time).
  • the pump block is like a variable-feed hydraulic pump with automatic feedback adjustment to precisely adjust the flow change, and the increase or decrease of the flow rate matches the change in demand of the hydraulic motor.
  • the automatic hydraulic pressure variable causes almost no pressure loss in the hydraulic system.
  • the hydraulic system of the invention not only changes the working pressure with the load, but also differs from the usual hydraulic system.
  • the hydraulic power source-the hydraulic pressure supplied by the pump cylinder can also be invariant with the load change, and can be kept consistent with the working pressure of the system at any time, so that there is almost no Supply pressure loss.
  • due to the adoption of the auxiliary power control mode there is no need for adjustment control such as a throttle valve, and thus there is almost no pressure loss due to throttling. Therefore, there is almost no power loss due to pressure loss, and there is almost no heat and noise due to pressure loss.
  • the maximum propulsion can only be achieved when the car is traveling at higher speeds and lower speeds. At high speeds, the wheel torque is usually greatly reduced.
  • the power is inversely proportional to speed and gravity. The higher the speed and the heavier the bearing, the worse the acceleration and the dynamics of travel.
  • the vehicle using the gravity driving wheel of the present invention can automatically variable due to the hydraulic pressure and the liquid flow rate, and the torque and power can be automatically increased correspondingly with the increase of the load weight and the speed of the wheel, so that the vehicle can always be at low speed or high speed. Maintain high vehicle propulsion. Power is proportional to speed and gravity. It shows that the faster the speed and the heavier the bearing, the stronger the acceleration and the dynamics of travel.
  • the gravity driving wheel of the invention is integrated with the wheel, and the mechanical efficiency loss of the system such as transmission and shifting is not provided.
  • the load ratio is large. Since the engine and the corresponding mechanical transmission, shifting system, and the like are no longer arranged, the weight of the vehicle using the present invention is greatly reduced, and the load ratio is greatly improved.
  • Power can be distributed.
  • the gravity driving wheel can be installed in each of the mounting carts, which is convenient for decentralizing the power of railways and road vehicles.
  • the front of the car can no longer be used as a power center, but only as a control center, enabling ultra-long trains and highway "trains".
  • DRAWINGS 1 is a schematic structural view of a gravity driving wheel of the present invention
  • FIG. 2 is a schematic view showing the working principle of the main part of the gravity driving wheel of the present invention
  • FIG. 3 is a basic structural view of the gravity driving wheel of the present invention
  • Figure 4 is a schematic structural view of a power wheel of the present invention.
  • Figure 5a is a structural view of a pump cylinder of a key component of the gravity driving wheel of the present invention
  • Figure 5b is a left side sectional view of Figure 5a;
  • Figure 6a is a structural view of a pickup of a key component of the gravity driving wheel of the present invention.
  • Figure 6b is a plan view of Figure 6a
  • Figure 7 is a schematic view showing the operation track of the pickup of the key components of the gravity driving wheel of the present invention.
  • FIG. 1 is a schematic structural view of a gravity driving wheel of the present invention.
  • the gravity driving wheel of the present invention is provided with a power wheel 1 and at least two virtual restraining wheels 2, 3 between the inner edge of the wheel rim and the axle.
  • the power wheel 1 is a driving wheel
  • the wheel 4 is a driven wheel
  • the virtual restraining wheel 2, 3 supports and strengthens the virtual constraint.
  • Fig. 2 is a schematic view showing the working principle of the main part of the gravity driving wheel of the present invention, which includes a hydraulic system circuit.
  • the power wheel 1 is the main part of the gravity driving wheel, and the vehicle's gravity is converted into torque, which is mainly completed in the power wheel 1.
  • the working principle is shown in Fig. 4.
  • the power wheel 1 is equipped with a hydraulic system and a plurality of pick-up devices.
  • Each of the pickups 20 extends its pickup arm to the rim of the power wheel 1, and moves toward the wheel axis when pressed by the vehicle's own weight and load gravity.
  • push up with The connected pump cylinder piston 15 causes the pump cylinder 12 to output a small amount of pressurized liquid flow through the oil delivery manifold 7, and the pressurized liquid flow pushes the hydraulic motor 9 and drives the power wheel 1 to rotate at an angle, thereby causing the next pickup to be stressed. Push up the pump cylinder piston.
  • each pump cylinder sequentially outputs a pressurized liquid flow, and a continuous liquid flow and a hydraulic pressure are formed through the oil delivery manifold 7, and the input hydraulic motor 9 generates a continuous torque to drive the power wheel to rotate, and the power wheel drives the wheel to rotate.
  • the return oil is returned to each pump cylinder through the oil return header 8 to prepare for the next process.
  • the pick-up device 20 can extend the stroke of the push-up pump cylinder piston while picking up the gravity, and can also amplify the force value, so that the liquid flow rate can be significantly increased, and the hydraulic pressure can be increased.
  • the power generated by the hydraulic motor 9 is significantly improved, effectively solving the technical problem that the hydraulic power is "not worth the loss";
  • the rim of the power wheel 1, the pickup 20 and the wheel 4 constitute an internal and external ⁇ transmission force mechanism,
  • an equivalent rolling assist is generated on the wheel 4, thereby realizing the power output, effectively solving the problem of the power supply being in short supply. It is these two key functions that prevent the above work process from being liable due to lack of power.
  • FIG. 3 is a basic structural view of the gravity driving wheel of the present invention
  • FIG. 4 is a schematic structural view of the power wheel of the present invention.
  • components connected thereto such as an axle, a rim, The Y-shaped brackets and the like are drawn together, and thus FIG. 4 actually corresponds to the cross-sectional view of the lower half of FIG.
  • the gravity driving wheel of the embodiment mainly comprises a power wheel 1, two virtual restraining wheels 2, 3, a Y-shaped bracket 5, and a wheel 4.
  • the wheel axle is rigidly fixed on the vehicle body
  • the Y-shaped bracket 5 is rigidly sleeved on the wheel axle and fixed on the vehicle body.
  • the power wheel 1 and the virtual restraint wheels 2, 3 are in a virtual restraint state with the wheel 4 under the support of the Y-shaped bracket.
  • the main function of this structure is to make the power wheel 1 and the pickup 20 and the rim of the wheel 4 constitute an internal and external ⁇ transmission force-transmitting mechanism, so as to generate the rolling resistance on the wheel 4 while the power wheel 1 picks up the rolling resistance.
  • the rolling assist of the wheel 1 rolling resistance equivalent is to make the power wheel 1 and the pickup 20 and the rim of the wheel 4 constitute an internal and external ⁇ transmission force-transmitting mechanism, so as to generate the rolling resistance on the wheel 4 while the power wheel 1 picks up the rolling resistance.
  • the wheel 4 is mounted on the outer end of the axle with a self-aligning roller bearing, and a certain degree of deviation can be obtained. Under the weight of the self-weight and the load, the weight of the vehicle can be effectively pressed by the Y-shaped bracket 5 on the power wheel 1 Upper, especially when there is wear on the outer edge of the power wheel 1, it can be automatically compensated. Since the offset degree of the wheel 4 is actually small, the virtual restraining wheels 2, 3 adopt a pneumatic tire type, which can not only design a cylinder, reduce parts, but also make full use of the pneumatic tire to have good elasticity, strong adhesion and anti-lateral direction. Strength and other performance, improve the strength of the virtual constraint. Cooperating with the power wheel 1 can greatly enhance the running stability and lateral force of the wheel due to the assembly of the self-aligning bearing.
  • the above technical solution is a structure adapted to the three-wheel virtual constraint, and the interlocking brake 6 can be configured.
  • the power wheel is composed of a hydraulic system, a pickup, a transmission mechanism and an auxiliary device.
  • the hydraulic system of the power wheel is composed of a pump cylinder 12, an oil delivery manifold 7, a return oil header 8, a hydraulic motor 9, a small energy storage device 10, and a filter 11, and is a cylindrical closed-loop hydraulic system. Since the gravity driving wheel adopts a unique auxiliary motion control technology, the hydraulic system of the power wheel of the present embodiment can not use the control components such as the relief valve, the speed regulating valve and the reversing valve.
  • the pickup 20 pushes the pump cylinder piston 15 so that the pump cylinder 12 outputs a pressurized liquid flow and is input to the hydraulic motor 9 via the oil delivery manifold 7, pushing the hydraulic motor 9 to rotate an angle while simultaneously making another A pickup 20 is pressed up and down...
  • the circulation reciprocates to form a continuous liquid flow rate and hydraulic pressure, so that the hydraulic motor 9 generates a continuous torque to drive the power wheel 1 to rotate.
  • the liquid flow is performed in the hydraulic motor 9, it is returned to the respective pump cylinders via the oil return header 8 and the filter 11.
  • the oil collecting header 7 and the returning oil collecting pipe 8 have the same structure, and are all welded and connected with the three-way oil pipe of the same number of pump cylinders, and are connected with the pump cylinders 12, respectively, collecting the oil and collecting the currents.
  • the function of oil At the same time, the oil delivery header 7 and the return oil header 8 are each connected with a one-way valve, which doubles as an oil filling port and an oil exchange port.
  • the accumulator 10 regulates system pressure pulsation and regulates inlet port flow changes. If necessary, a parallel connection of multiple accumulators can be added to the power wheel bushing.
  • the transmission portion of the power wheel 1 is composed of a wheel 21, a shaft 22, and the like.
  • the pump cylinder 12, the oil collecting header 7, the oil return header 8 and the hydraulic motor 9 are mounted on the web of the wheel 21, and the accumulator 10 and the filter 11 are mounted on the bushing of the wheel 21.
  • One end of the shaft 22 is rigidly fixed to the crotch bracket 5, and the other end is spline-connected to the power output shaft of the hydraulic motor 9, so that the hydraulic motor 9 is in a shell rotation state, and the wheel 21 and other components mounted on the wheel are rotated together.
  • the inner edge of the rim of the wheel 21 is connected to the power output wheel of the auxiliary motor 13 to receive the auxiliary power, and the outer edge is
  • the wheels 4 are rimmed to transmit torque to the wheels.
  • the auxiliary device of the power wheel 1 is composed of an auxiliary motor 13 and a power output wheel thereof, and can transmit auxiliary power to the power wheel 1.
  • 5a and 5b are structural views of a pump cylinder of a key component of the gravity driving wheel of the present invention.
  • Pump cylinder of a key component of the gravity driving wheel of the present invention.
  • the pump cylinder 12 is composed of a cylinder block, a pump cylinder piston 15 and its oscillating piston rod, an oil feed check valve 16, and an oil return check valve 17.
  • the pump cylinder 12 is constructed similarly to a hydraulic cylinder, but with the opposite effect.
  • the hydraulic cylinder converts hydraulic energy into mechanical energy
  • the pump cylinder 12 converts mechanical energy into hydraulic energy.
  • the drain hole 18 can temporarily discharge the trace hydraulic oil leaking from the pump cylinder piston 15.
  • the adjusting bolt 19 can adjust the height of the pick-up device 20 to push the pump cylinder piston 15 to shorten or extend the stroke of the pump cylinder piston 15 to increase or decrease the liquid flow rate, and achieve the purpose of adjusting the hydraulic power and the output torque of the hydraulic motor;
  • the adjustment result also affects the height of each of the pickup arms of the pickup 20 extending beyond the rim of the power wheel 1, resulting in an increase or decrease in the rolling resistance value generated by the pickup process.
  • the most convenient way for the pump cylinder 12 to pick up the gravity is to extend the piston rod directly out of the rim and act as a counter force for the pickup arm to pick up the vehicle's gravity.
  • the rolling resistance torque formed by the pickup arm causes a large rolling resistance, so that the power obtained by picking up and transforming the gravity is offset by the rolling resistance caused.
  • the rolling resistance also has its particularity, that is, its peak resistance is high.
  • the rolling resistance torque caused by the pickup process is a process of "decreasing from the longest torque to the zero moment", and the rolling resistance formed at the longest resistance moment is at the peak, It can double the power value, leaving the system in a serious "not worth the loss” state. Therefore, in the way that the piston rod of the pump cylinder directly protrudes from the rim of the wheel, it is necessary to supplement the external power up to twice the average value of the rolling resistance (there is also an equivalent of half the average value of the rolling resistance when the accumulator or inertial mechanism is adjusted. The additional power) can achieve its own rotation.
  • FIG. 6a and FIG. 6b are structural diagrams of the pickup of the key components of the gravity driving wheel of the present invention
  • FIG. 7 is a gravity driving wheel of the present invention. Schematic diagram of the running track of the key components of the pickup.
  • the pickup 20 includes a pickup arm and a swinging shaft hole 0 disposed on the pickup arm, connecting the shaft hole (the first pickup arm C, and the second second picking arm)
  • the swing shaft hole 0 is disposed at one end of the pickup arm for connecting the cylinder of the pump cylinder 12; the first pickup arm C is disposed at the opposite end of the swing shaft hole 0, and extends the power wheel outward
  • the rim of 1 picks up the gravity of the vehicle and forms an intrinsic transverse moment 0-C with the oscillating shaft hole 0;
  • the connecting shaft hole is disposed on the transverse moment 0-C formed by the oscillating shaft hole 0 and the first pickup arm C Connecting with the pump cylinder piston 15 and conducting the picked-up gravity;
  • two second pick-up arms D and E are sequentially disposed on the lateral moment 0-C formed by the swing shaft hole 0 and the first pickup arm C,
  • the two second pick-up arm D and E and the swing shaft hole 0 and the connecting shaft hole form a plurality of force point lever mechanism, and the double-magnification or conduction of the picked-up gravity by the lever effect, that is, multiple amplification or conduction pushing the pump cylinder
  • the pickup 20 of the above technical solution of the present invention has two main functions: increasing the hydraulic power and reducing the peak of the rolling resistance, specifically:
  • the use of the pickup 20 of the present invention can significantly increase the flow rate of the liquid.
  • the longitudinal height between the connecting shaft hole ⁇ the second pick-up arm D and the connecting shaft hole (the second pick-up arm E is greater than the maximum radial height of the first pick-up arm C actually extending the rim) Therefore, the stroke of the propulsion cylinder piston 15 can be increased, and the liquid flow output from the pump cylinder 12 can be increased.
  • H is the stroke of the actual propulsion piston of the pump cylinder
  • Hi is the longitudinal height between the connecting shaft hole and the second pick-up arm E
  • H2 is the maximum radial height of the first pick-up arm C extending beyond the rim
  • Li is the length between the swing shaft hole 0 to the first pick-up arm C
  • L2 is the length between the swing shaft hole 0 and the connecting shaft hole.
  • the pickup 20 can significantly increase the propulsion pump cylinder piston 15 strokes, thereby significantly increasing the liquid flow.
  • the force arm between the swing shaft hole 0 and the first pickup arm C is longer than the force arm between the swing shaft hole 0 and the connection shaft hole, so that the picked-up gravity can be amplified by the lever effect.
  • the pickup 20 delays the pickup contact to shorten the rolling resistance, thereby effectively reducing the rolling resistance formed by the pickup force.
  • F2 is the actual rolling resistance peak formed by the pickup force
  • L is the rolling resistance torque that should be formed if the pump cylinder directly protrudes from the power wheel rim pickup force without the pickup
  • L 3 is the connection The length between the shaft hole and the first pick-up arm
  • F is the wheel carrying gravity
  • the use of the pickup 20 of the present invention can increase the hydraulic power, thereby increasing the power value while reducing the peak of the rolling resistance.
  • the power value and the resistance peak are made close to each other or equal, so that the power wheel 1 approaches or even reaches a rotation.
  • the present invention provides a power wheel 1 and its inner and outer cymbal transmission force-transmitting mechanism of the pickup 20 and the wheel 4, and the rim of the smaller diameter power wheel 1 and the larger diameter wheel 4 are placed along the normal line.
  • the stack is joined to the lower edge of the rim of the wheel 4 (see Figs. 1, 3).
  • the pickup arm extending on the power wheel 1 does not directly contact the ground (track) surface, but touches the inner edge of the rim of the wheel 4.
  • the pickup arm extended by the pickup 20 forms a rolling resistance torque of a certain length on the power wheel 1, and receives and conducts the wheel to carry the gravity upward.
  • the reaction force generates rolling resistance; at the same time, on the rim of the wheel 4, a rolling assist torque is formed, and the rim of the wheel 4 is applied downward to exert a gravitational force to generate a rolling assist.
  • the rolling resistance torque is the same as the rolling assist torque length, and the generated resistance values are equal.
  • the rolling resistance therein has been offset by the power picked up by the pickup 20 and the hydraulic system to convert gravity. Therefore, the rolling assist is converted into output power and amplified by the transmission ratio of the power wheel 1 and the wheel 4.
  • F 3 is the wheel 4 can output power
  • F is the wheel carrying gravity
  • L4 is the rolling assist torque
  • X is the transmission ratio of the wheel 4 rim and the power wheel 1 .
  • the output power can fully meet the power demand of the vehicle to overcome the acceleration resistance, the uphill resistance, the air resistance and the transmission loss, and effectively solve the technical problem of “supply in short supply”.
  • the necessary hydraulic control elements in the conventional hydraulic system such as the relief valve, the reversing valve, the speed control valve, etc., and various necessary auxiliary components
  • filters, accumulators, etc. are also installed on the power wheel 1 as usual.
  • the present invention provides a new auxiliary control device solution.
  • the above-mentioned internal and external ⁇ transmission force mechanism provides the possibility and conditions for this new auxiliary control device scheme.
  • a critical point phenomenon is formed: The torque of the power wheel 1 cannot be rotated until it is sufficient to overcome the rolling resistance, so that the wheel 4 can obtain zero power and is in an unpowered state; Exceeding the rolling resistance, when the rotation is realized, the wheel 4 can obtain the power such as the rolling assist force equal to the rolling resistance value of the power wheel, and at the same time, the power is amplified by more than 2 times by the transmission ratio, so that the gravity driving wheel quickly approaches the maximum power state.
  • the force contact arm C presets the proportion of the swing shaft hole 0-connecting shaft hole section, and adjusts the adjusting bolt 1 9 on the pump cylinder during operation to set and adjust the hydraulic pressure and liquid flow of the hydraulic system of the power wheel 1 At an appropriate level, the actual torque of the hydraulic motor 9 is placed below this critical point, and then the wheel is added or subtracted to assist the wheel. Switching and adjusting between maximum power and no power, forming an auxiliary control mode.
  • the auxiliary motor 13 and its power output wheel are designed and mounted on the power wheel 1, and the auxiliary control power is output to the wheel 21 of the power wheel.
  • the auxiliary motor 1 3 adds an appropriate amount of auxiliary torque, and the gravity driving wheel is in the starting and traveling state; when continuously added, it is in the continuous traveling state. Accelerate the additional speed, and the gravity drive wheel is in an accelerated state. The additional auxiliary power is stopped, and the gravity drive wheel is in the coasting and deceleration state. At this time, with the addition of mechanical brakes, the gravity drive wheels quickly become unpowered, braked and parked. It can be seen that the operating state of the gravity driving wheel can be controlled only by adjusting and changing the operating state of the auxiliary motor by externally known electronic control components.
  • the liquid flow can reach the flow required by the standard hydraulic motor. Increase the piston area of the pump cylinder, or increase the stroke of the pump cylinder piston, or increase the number of cylinders to obtain a larger liquid flow.
  • Auxiliary power The value depends on the difference between the rolling resistance and the actual output torque of the hydraulic motor-power wheel. The relationship is: Auxiliary power> (Rolling resistance - Actual torque) ⁇ Auxiliary wheel and power wheel transmission ratio
  • the additional auxiliary control power should be greater than 1.1 N ⁇ m.
  • the advantageous effects of the present invention can be further illustrated by applying the gravity driving wheel of the present invention to an embodiment of an urban light passenger vehicle such as a taxi.
  • the load-to-weight ratio is 3-4 times that of a small car.
  • the speed of the hydraulic motor due to the limitations of the prior art such as the speed of the hydraulic motor, it is difficult to achieve a high vehicle speed for a vehicle equipped with a gravity driven wheel. Since the speed of the inner curve plunger hydraulic motor applied to the power wheel is generally not higher than 600r/min, the speed of the gravity driven wheel vehicle generally does not exceed 50km/h; although the speed of the power wheel and the wheel rim can be increased to increase the speed, generally Not more than 75km/h. In addition, the use of the internal and external ⁇ transmission force mechanism reduces the stiffness and ability of the gravity-driven wheel to resist lateral forces and is not suitable for driving on rough roads. Therefore, the vehicle of the embodiment is suitable for urban public transportation, rental or transportation vehicles.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

L'invention concerne une roue d'entraînement par gravité qui peut entraîner un véhicule par conversion de la gravité du véhicule en puissance. Cette roue d'entraînement par gravité est formée dans la roue du véhicule. Une roue motrice et au moins deux roues de limitation virtuelle sont placées dans la roue de véhicule. La roue motrice est pourvue d'un dispositif de récupération de force et d'un système hydraulique. Le dispositif de récupération de force récupère la gravité chargée sur la roue de véhicule et la transmet au système hydraulique. Le système hydraulique génère la puissance hydraulique et la transfère dans le couple de la roue motrice. La roue motrice, le dispositif de récupération de force et la jante de la roue de véhicule constituent simultanément la transmission interne et externe de façon à générer une force d'assistance au roulement lorsque la roue motrice récupère la gravité et génère la résistance au roulement. La force d'assistance au roulement est égale à la résistance au roulement.
PCT/CN2007/070852 2006-10-17 2007-10-09 Roue d'entraînement par gravité WO2008046344A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNU2006201487699U CN200964055Y (zh) 2006-10-17 2006-10-17 重力驱动轮
CN200620148769.9 2006-10-17

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Publication Number Publication Date
WO2008046344A1 true WO2008046344A1 (fr) 2008-04-24

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PCT/CN2007/070852 WO2008046344A1 (fr) 2006-10-17 2007-10-09 Roue d'entraînement par gravité

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CN (1) CN200964055Y (fr)
WO (1) WO2008046344A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
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CN107096234A (zh) * 2017-05-18 2017-08-29 中国石油大学(华东) 一种可调节式8字形轨迹无碳小车
CN107096234B (zh) * 2017-05-18 2022-06-14 中国石油大学(华东) 一种可调节式8字形轨迹无碳小车

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