High-speed-ratio PTO power takeoff, direct connection generator and power assembly mechanism

Abstract

The utility model discloses a high-speed-ratio PTO power takeoff which comprises an inner layer of double idle gears and an outer layer of double idle gears, the inner layer of double idle gears comprises an inner idle gear and an outer idle gear which rotate synchronously, and the radius of the outer idle gear is larger than that of the inner idle gear; one end of the large idle gear is embedded with the inner idle gear; the crankshaft timing gear is embedded with the other end of the large idle gear and is used for transmitting the power of the crankshaft; and the generator gear is embedded with the outer idle gear. An inner layer and an outer layer of double idle gears are additionally arranged in the PTO power takeoff, the gear speed ratio is increased, the PTO output rotating speed is improved, it is guaranteed that the rear portion can be connected with a high-rotating-speed motor, and therefore the size and the weight of a generator are reduced, the generator can be directly connected with an engine PTO, a transmission shaft is omitted, and the power takeoff is convenient to use. And the cost and the weight are further reduced. The size of the generator is reduced. The weight is light, the cost is low, the failure rate is low and the reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a large speed ratio PTO power take-off. Background Art

[0002] Concrete mixer trucks are special vehicles used to transport concrete. During the transportation process, the tank is required to run continuously to ensure that the concrete inside does not solidify and stagnate. During the loading and unloading process, the vehicle does not move and the tank runs quickly. The power system of a concrete mixer truck is mainly divided into two parts: chassis and superstructure. The chassis power is usually provided by the engine, which drives the wheels through the clutch, gearbox, and final reducer to achieve vehicle driving. The engine comes with a full-power power take-off to provide power for the superstructure.

[0003] The power transmission route of the existing mixer truck chassis is: engine-clutch-gearbox-drive axle; the power of the upper part is connected to the larger generator at the rear through the conventional speed ratio PTO (speed ratio is usually around 1) of the engine, and the kinetic energy is converted into electrical energy for transmission and control. Then, the drive motor converts the electrical energy into mechanical energy to drive the mixer. This type of generator structure is costly, heavy, and not widely accepted in the market.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The utility model aims to provide a light-weight, low-cost, high-speed ratio PTO power take-off, a direct-connected generator and a power assembly mechanism.

[0006] To achieve the above-mentioned purpose, the utility model provides a high-speed ratio PTO power take-off, including: two layers of inner and outer double idler gears, including an inner idler gear and an outer idler gear that rotate synchronously, the radius of the outer idler gear being larger than that of the inner idler gear; a large idler gear, one end of the large idler gear being engaged with the inner idler gear; a crankshaft timing gear, the crankshaft timing gear being engaged with the other end of the large idler gear for transmitting the power of the crankshaft; a generator gear, the generator gear being engaged with the outer idler gear.

[0007] In one or more embodiments, the speed ratio of the gear structure is greater than 2.

[0008] The utility model also provides a direct-connected generator for connecting to any of the above-mentioned high-speed ratio PTO power take-offs, comprising: a motor shaft and a rotor, one end of the motor shaft is connected to the rotor, and the other end is connected to the generator gear, and when the generator gear rotates, it can drive the motor shaft to rotate synchronously, thereby transmitting the rotation of the high-speed ratio PTO power take-off to the direct-connected generator.

[0009] As an optional embodiment, it also includes a shell and a battery, and the battery is used to store the electrical energy generated by the generator.

[0010] The utility model also provides a power assembly mechanism, which uses a high-speed ratio PTO power take-off and a direct-connected generator as described above, including: a chassis, used to achieve vehicle driving; a superstructure, including a mixing tank, the superstructure can obtain power and drive the mixing tank to operate; an engine, the engine is respectively connected to the superstructure and the chassis, and provides power for the chassis and the superstructure; a control system, used to control the output of the engine.

[0011] In one or more embodiments, the chassis includes a clutch, a gearbox and a drive axle; the clutch, the gearbox and the drive axle are connected in sequence, one end of the clutch is connected to the gearbox, and the other end is connected to the engine, for transmitting the power of the engine in sequence.

[0012] In one or more embodiments, the upper structure also includes a high-speed ratio PTO power take-off, a direct-connected generator, and a drive motor, wherein one end of the direct-connected generator is directly connected to the high-speed ratio PTO power take-off for receiving power from the engine crankshaft and converting mechanical energy into electrical energy, and the other end of the direct-connected generator is connected to one end of the drive motor, and the other end of the drive motor is connected to the mixing tank; the drive motor is used to convert electrical energy into mechanical energy to drive the mixing tank to operate.

[0013] In one or more embodiments, a reducer is provided between the driving motor and the stirring tank.

[0014] In one or more embodiments, the control system further includes a motor control system, which is controlled by the control system and is used to control the direct-connected generator and the drive motor.

[0015] In one or more embodiments, a battery system is further included, wherein the battery system is connected to the engine.

[0016] The utility model provides a high-speed ratio PTO power take-off, a direct-connected generator and a power assembly mechanism. In the PTO power take-off, inner and outer double-layer double idler gears are added, the gear ratio is increased, the PTO output speed is improved, and a high-speed motor can be connected to the back, thereby reducing the size and weight of the generator. Since the size of the generator is reduced and the weight is reduced, it can be directly connected to the engine PTO, eliminating the transmission shaft, and further reducing the cost and weight. The size of the generator is reduced, the weight is light, the cost is low, the failure rate is low, and the reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a power assembly mechanism provided in an embodiment of the utility model.

[0018] Figure 2 It is a schematic diagram of the gear structure of a high-speed ratio PTO power take-off provided in an embodiment of the utility model.

[0019] Figure 3 It is a side view of the gear structure of a high-speed ratio PTO power take-off provided in an embodiment of the utility model.

[0020] Figure 4 It is a detailed structural diagram of a direct-connected generator provided in an embodiment of the utility model.

[0021] Description of main reference numerals:

[0022] 1-chassis, 11-clutch, 12-gearbox, 13-drive axle, 2-upper body, 21-high speed ratio PTO power take-off, 211-inner and outer double-layer idler gears, 2111-inner idler gear, 2112-outer idler gear, 212-large idler gear, 213-crankshaft timing gear, 214-generator gear, 22-direct-connected generator, 221-motor shaft, 222-rotor, 223-housing, 23-drive motor, 24-reducer, 25-mixing tank, 3-engine, 4-control system, 41-motor control system, 5-battery system. DETAILED DESCRIPTION

[0023] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0024] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0025] A high speed ratio PTO power take-off, such as Figures 2 to 3As shown, it includes: two layers of double idle gears inside and outside, including an inner idle gear 2111 and an outer idle gear 2112 that rotate synchronously, and the radius of the outer idle gear 2112 is larger than that of the inner idle gear 2111; a large idle gear 212, one end of the large idle gear 212 is engaged with the inner idle gear 2111; a crankshaft timing gear 213, the crankshaft timing gear 213 is engaged with the other end of the large idle gear 212, and is used to transmit the power of the crankshaft; a generator gear 214, and the generator gear 214 is engaged with the outer idle gear 2112.

[0026] Specifically, the inner idler gear 2111 is located on the inner side of the inner and outer double-layer double idler gears, and the outer idler gear 2112 is nested on the outer side of the inner idler gear 2111. The outer idler gear 2112 has a large diameter and a small thickness, while the inner idler gear 2111 has a small diameter and a large thickness. As a preferred embodiment, the outer idler gear 2112 is mounted on the inner idler gear 2111 by heating and pressing. The thickness of the inner idler gear 2111 is greater than or equal to the thickness of the outer idler gear 2112 plus half of the thickness of the large idler gear 212. The thickness of the generator gear 214 is similar to that of the outer idler gear 2112. One end of the crankshaft timing gear 213 is connected to the engine 3, and is used to transmit the rotation of the crank of the engine 3 to the PTO power take-off. The power transmission route is: engine 3-crankshaft timing gear 213-large idler gear 212-inner idler gear 2111-outer idler gear 2112-generator gear 214-directly connected to the generator 22.

[0027] As an optional implementation, the speed ratio of the gear structure is greater than 2.

[0028] Specifically, the PTO of the existing engine 3 is usually around 1, and the speed ratio of the gear structure of the present application is greater than 2. As a preferred embodiment, the speed ratio of the gear structure is greater than 3.5.

[0029] A direct-connected generator 22, used to connect to any of the high-speed ratio PTO power take-offs 21 described above, such as Figure 4 As shown, it includes: a motor shaft 221 and a rotor 222, wherein one end of the motor shaft 221 is connected to the rotor 222, and the other end is connected to the generator gear 214. When the generator gear 214 rotates, it can drive the motor shaft 221 to rotate synchronously, and transmit the rotation of the high-speed ratio PTO power take-off 21 to the direct-connected generator 22.

[0030] Specifically, the generator also includes a shell 223 and other structures. The generator is directly connected to the PTO power take-off. The specific connection method is: the motor shaft 221 is connected to the generator gear 214, and rotates synchronously to transmit the rotation of the high-speed ratio PTO power take-off 21 to the directly connected generator 22.

[0031] As an optional embodiment, it also includes a housing 223 and a battery, wherein the battery is used to store the electrical energy generated by the generator.

[0032] Specifically, the direct-connected generator 22 is mounted on the interface of the high-speed ratio PTO power take-off 21 and is connected to the generator gear 214 . The electricity generated by the generator is stored in the battery.

[0033] A power assembly mechanism, using any of the above-mentioned high-speed ratio PTO power take-offs 21 and the above-mentioned direct-connected generator 22, such as Figure 1 As shown, it includes: a chassis 1 for realizing vehicle driving; a superstructure 2, including a mixing tank 25, the superstructure 2 can obtain power and drive the mixing tank 25 to operate; an engine 3, the engine 3 is respectively connected to the superstructure 2 and the chassis 1, and provides power for the chassis 1 and the superstructure 2; a control system 4 is used to control the output of the engine 3.

[0034] Specifically, the chassis 1 and the upper body 2 obtain power from the engine 3 respectively to drive the vehicle to travel and the mixing tank 25 to rotate.

[0035] As an optional embodiment, the chassis 1 includes a clutch 11, a gearbox 12 and a drive axle 13; the clutch 11, the gearbox 12, and the drive axle 13 are connected in sequence, one end of the clutch 11 is connected to the gearbox 12, and the other end is connected to the engine 3, for transmitting the power of the engine 3 in sequence.

[0036] Specifically, the power transmission route of the chassis 1 is: engine 3—clutch 11—gearbox 12—drive axle 13.

[0037] As an optional embodiment, the upper body 2 also includes a high-speed ratio PTO power take-off 21, a directly connected generator 22, and a drive motor 23, wherein one end of the directly connected generator 22 is directly connected to the high-speed ratio PTO power take-off 21, for receiving power from the crankshaft of the engine 3 and converting mechanical energy into electrical energy, the other end of the directly connected generator 22 is connected to one end of the drive motor 23, and the other end of the drive motor 23 is connected to the mixing tank 25; the drive motor 23 is used to convert electrical energy into mechanical energy to drive the mixing tank 25 to operate.

[0038] Specifically, the upper body 2 is driven by the drive motor 23, and the power supply of the drive motor 23 comes from the battery of the direct-connected generator 22. The power of the upper body 2 is a high-speed ratio PTO, which is connected to the direct-connected generator 22, converts kinetic energy into electrical energy for transmission and control, and then converts electrical energy into mechanical energy through the drive motor 23 to drive the mixing tank 25 to operate. The high-speed ratio PTO power take-off 21 is directly connected to the direct-connected generator 22, and there is no structure such as a rotating shaft in the middle. Since the output speed of the PTO is increased, it is guaranteed that a high-speed motor can be connected after the PTO. Under the premise of the same power generation, the higher the speed of the motor, the smaller the volume, the lower the cost, and the more conducive it is to the application in the whole vehicle. Because the volume of the direct-connected generator 22 is reduced and the weight is reduced, it can be directly connected to the engine 3PTO, eliminating the drive shaft, and further reducing the cost and weight.

[0039] As an optional implementation, a reducer 24 is provided between the driving motor 23 and the stirring tank 25 .

[0040] Specifically, the reducer 24 is used to adjust the rotation speed of the stirring tank 25 .

[0041] As an optional implementation, the control system 4 further includes a motor control system 441 , which is controlled by the control system 4 , and is used to control the direct-connected generator 22 and the drive motor 23 .

[0042] Specifically, the motor control system 441 controls the drive motor 23 to operate.

[0043] As an optional implementation, it further includes a battery system 5 , which is connected to the engine 3 .

[0044] By adopting the above technical solution, an inner and outer double-layer double idler gear is added to the PTO power take-off, which increases the output speed ratio of the gear and improves the PTO output speed, ensuring that a high-speed motor can be connected to the back, thereby reducing the size and weight of the generator. Since the size of the generator is smaller and the weight is reduced, it can be directly connected to the engine PTO, eliminating the transmission shaft, and further reducing the cost and weight. The size of the generator is reduced. Light weight, low cost, low failure rate, and high reliability.

[0045] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A high speed ratio PTO power take-off, characterized in that: include: The inner and outer double idler gears include an inner idler gear and an outer idler gear which rotate synchronously, wherein the radius of the outer idler gear is larger than that of the inner idler gear; A large idler gear, one end of which is engaged with the inner idler gear; A crankshaft timing gear, the crankshaft timing gear is engaged with the other end of the large idler gear and is used to transmit the power of the crankshaft; A generator gear is engaged with the outer idler gear.

2. The high speed ratio PTO power take-off according to claim 1, characterized in that: The speed ratio of the gear structure is greater than 2.

3. A direct-connected generator, used to connect a high-speed ratio PTO power take-off as described in any one of rights 1-2, characterized in that: include: A motor shaft and a rotor, one end of the motor shaft is connected to the rotor, and the other end is connected to the generator gear. When the generator gear rotates, it can drive the motor shaft to rotate synchronously, and transmit the rotation of the high-speed ratio PTO power take-off to the direct-connected generator.

4. The direct-connected generator according to claim 3, characterized in that: The utility model also comprises a housing and a battery, wherein the battery is used for storing the electric energy generated by the generator.

5. A power assembly mechanism, using the high speed ratio PTO power take-off as described in any one of 1-2 and the direct-connected generator as described in any one of 3-4, characterized in that: include: Chassis, used to realize vehicle travel; The upper device includes a mixing tank, and the upper device can obtain power and drive the mixing tank to operate; An engine, the engine being connected to the upper body and the chassis respectively to provide power for the chassis and the upper body; A control system is used to control the output of the engine.

6. The power assembly mechanism according to claim 5, characterized in that: The chassis includes a clutch, a gearbox and a drive axle; the clutch, the gearbox and the drive axle are connected in sequence, one end of the clutch is connected to the gearbox, and the other end is connected to the engine, so as to transmit the power of the engine in sequence.

7. The power assembly mechanism according to claim 5, characterized in that: The upper body also includes a high-speed ratio PTO power take-off, a direct-connected generator, and a drive motor, wherein one end of the direct-connected generator is directly connected to the high-speed ratio PTO power take-off for receiving power from the engine crankshaft and converting mechanical energy into electrical energy, the other end of the direct-connected generator is connected to one end of the drive motor, and the other end of the drive motor is connected to the mixing tank; the drive motor is used to convert electrical energy into mechanical energy to drive the mixing tank to operate.

8. The power assembly mechanism according to claim 7, characterized in that: A reducer is provided between the driving motor and the stirring tank.

9. The power assembly mechanism according to claim 7, characterized in that: The control system further comprises a motor control system, which is controlled by the control system and is used to control the direct-connected generator and the drive motor.

10. The power assembly mechanism according to claim 5, characterized in that: Also included is a battery system, which is connected to the engine.

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