CN219257072U

CN219257072U - Loading and unloading device, loading and unloading system and engineering vehicle

Info

Publication number: CN219257072U
Application number: CN202320027008.1U
Authority: CN
Inventors: 赖勇; 徐舟; 何兴; 熊亚坤; 张俊深
Original assignee: Changsha Zoomlion Environmental Industry Co Ltd
Current assignee: Changsha Zoomlion Environmental Industry Co Ltd
Priority date: 2023-01-04
Filing date: 2023-01-04
Publication date: 2023-06-27
Anticipated expiration: 2033-01-04

Abstract

The application provides an on-load power take-off device, an on-load power take-off system and an engineering vehicle, and relates to the technical field of engineering machinery. The upper loading power take-off device comprises a planetary gear mechanism, a power take-off shaft and a speed regulating motor; the planetary gear mechanism comprises a sun gear, a planet carrier and a gear ring, wherein the gear ring is connected with a loading input shaft of a loading assembly of the engineering vehicle; one end of the power take-off shaft is connected with the planet carrier, and the other end of the power take-off shaft is connected with a gearbox of the engineering vehicle; a motor shaft of the speed regulating motor is connected with the sun gear, and the speed regulating motor is positioned on one side of the planetary gear mechanism, which is far away from the power taking shaft. In the application of the loading and unloading device and the engineering vehicle, no matter what type of vehicle speed is used by a worker Cheng Cheliang, the gear ring can be output at a stable rotating speed only by inputting the matched rotating speed through the speed regulating motor, so that the stability of the work of the loading assembly of the engineering vehicle is ensured. And a disengaging mechanism such as a clutch is not needed to be additionally arranged between the power taking shaft and the gearbox, so that the structure is simplified, and the cost is reduced.

Description

Loading and unloading device, loading and unloading system and engineering vehicle

Technical Field

The application relates to the technical field of engineering machinery, in particular to an upper loading and unloading device, an upper loading and unloading system and an engineering vehicle.

Background

In a traditional engineering vehicle, one part of engine power enters a chassis to drive the vehicle to advance, and the other part of engine power is output from a power takeoff to provide power for a loading system of the engineering vehicle.

In the existing power take-off structure, a power take-off is connected with an output shaft of an engine through a clutch, and because a fixed gear ratio is used, a speed regulating mechanism is not arranged, so that speed regulation cannot be carried out, when a vehicle runs at a low speed, the rotating speed of the power take-off mechanism is low, the power take-off is small, and sufficient power cannot be provided for an uploading system; when the speed of the vehicle is too high, the rotation speed of the force taking mechanism is high, and the force taking is large. Therefore, the force taking size of the force taking mechanism is in direct proportion to the vehicle speed, the force taking change directly affects the work of the loading system, and shaking noise and the like are caused when the vehicle shifts gears, so that the loading system is unstable in work.

Disclosure of Invention

The utility model provides an aim at provides an on-load power take-off, on-load power take-off system and engineering vehicle for solve exist among the prior art not enough.

To achieve the above object, in a first aspect, the present application provides an on-load power take-off device, applied to an engineering vehicle, the on-load power take-off device includes:

the planetary gear mechanism comprises a sun gear, a planet carrier and a gear ring, wherein the gear ring is connected with a loading input shaft of a loading assembly of the engineering vehicle;

one end of the power take-off shaft is connected with the planet carrier, and the other end of the power take-off shaft is connected with a gearbox of the engineering vehicle; and

and a motor shaft of the speed regulating motor is connected with the sun gear, and the speed regulating motor is positioned at one side of the planetary gear mechanism far away from the power taking shaft.

As a further improvement of the above technical scheme:

with reference to the first aspect, in one possible implementation manner, the power take-off shaft is connected with an output shaft of the gearbox through a transmission assembly.

With reference to the first aspect, in one possible implementation manner, the transmission assembly is a coupling.

With reference to the first aspect, in one possible implementation manner, the transmission assembly includes a first transmission gear and a second transmission gear, where the first transmission gear is disposed on the power take-off shaft, the second transmission gear is used to be disposed on an output shaft of the gearbox, and the first transmission gear and the second transmission gear are meshed with each other.

With reference to the first aspect, in one possible implementation manner, an inner circumferential surface of the gear ring is provided with an inner tooth portion meshed with a planet wheel on a planet wheel carrier, and an outer circumferential surface of the gear ring is provided with an outer tooth portion meshed with a third transmission gear on the upper input shaft.

With reference to the first aspect, in one possible implementation manner, the speed regulating motor is a permanent magnet motor or an asynchronous motor, and the permanent magnet motor or the asynchronous motor is used for converting mechanical energy into electric energy or converting electric energy into mechanical energy.

With reference to the first aspect, in one possible implementation manner, the sun gear, the ring gear and the planet carrier satisfy the following relationship:

w _S +K*w _R ＝(1+K)*w _pc ；

wherein w is _S For the rotation speed of the sun gear, w _R For the gear ring speed, w _pc The carrier rotational speed is defined as K, which is the ratio of the number of teeth on the inner peripheral surface of the ring gear to the number of teeth on the sun gear.

To achieve the above object, in a third aspect, the present application further provides an on-load power taking system, including an electric energy device and the on-load power taking device provided according to the above second aspect, the electric energy device is connected with the speed regulating motor, and the electric energy device is used for storing and providing electric energy or recovering electric energy.

As a further improvement of the above technical scheme:

with reference to the second aspect, in one possible implementation manner, the electric energy device includes a battery module and an electric energy conversion module, the battery module is connected with the speed regulating motor through the electric energy conversion module, and the battery module is used for providing electric energy or recovering electric energy.

To achieve the above object, in a third aspect, the present application further provides an engineering vehicle, including a vehicle body and a loading assembly, where the loading assembly is disposed on the vehicle body, and where the loading assembly uses the loading power system provided according to the above third aspect.

Compared with the prior art, the beneficial effect of this application:

the application provides an upper loading power take-off device, an upper loading power take-off system and an engineering vehicle, wherein the upper loading power take-off device takes off power from a gearbox of the engineering vehicle through a power take-off shaft and outputs the power to an upper loading input shaft through a gear ring; when the power taking shaft takes power, the sun gear is driven to rotate through the speed regulating motor, so that the output rotating speed of the gear ring is ensured to be the required rotating speed. Specifically, when the rotating speed output by the gearbox is smaller, the speed regulating motor provides auxiliary power; when the rotating speed output by the gearbox is high, the speed regulating motor can be used as a generator to recover redundant power through power generation, so that energy is saved. Therefore, no matter what vehicle speed the worker Cheng Cheliang is at, the gear ring can be output at a stable rotating speed only by inputting the matched rotating speed through the speed regulating motor, so that the work of the upper assembly of the engineering vehicle is ensured to be stable.

In addition, when the upper assembly does not need power, the speed regulating motor is controlled to be in an idle state, so that the sun gear is not constrained, torque is not transmitted to the upper assembly through the planetary gear mechanism, a disengaging mechanism such as a clutch is not needed to be additionally arranged between the power taking shaft and the gearbox, the structure is simplified, and the cost is reduced.

Additional features and advantages of the present application will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate only some embodiments of the application and are therefore not to be considered limiting of its scope, for the purpose of providing additional related drawings from which the utility model may be practiced by those of ordinary skill in the art without the exercise of inventive faculty. In the drawings:

FIG. 1 illustrates a modular schematic diagram of an on-load power take-off system provided in an embodiment of the present application;

fig. 2 shows a schematic structural diagram of an on-load power take-off device according to an embodiment of the present application.

Reference numerals illustrate:

100. loading a force taking device; 110. a planetary gear mechanism; 111. a sun gear; 112. a planet carrier; 113. a gear ring; 120. a power take-off shaft; 130. a speed regulating motor; 140. a transmission assembly; 141. a first transmission gear; 142. a second transmission gear;

200. a gearbox; 210. an output shaft;

300. an input shaft is arranged on the upper part;

400. an electrical energy device; 410. a battery module; 420. and an electric energy conversion module.

Detailed Description

The following describes in detail the implementation of the embodiments of the present application with reference to the accompanying drawings. It should be understood that the detailed description is presented herein by way of illustration and explanation of the present application examples, and is not intended to limit the present application examples.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

In the embodiments of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

The present application will be described in detail below with reference to the attached drawings in conjunction with exemplary embodiments.

Example 1

Referring to fig. 1 and 2, the present embodiment provides an on-load power take-off device 100 applied to an engineering vehicle. The loading and unloading device 100 is used for taking force to a gearbox 200 of the engineering vehicle so as to power a loading assembly of the engineering vehicle.

In the present embodiment, the loading power take-off 100 includes a planetary gear mechanism 110, a power take-off shaft 120, and a speed motor 130. The planetary gear mechanism 110 includes a sun gear 111, a planet carrier 112 and a gear ring 113, the sun gear 111 is located in the middle of the gear ring 113, the planet carrier 112 is located between the sun gear 111 and the planet carrier 112, and the planet carrier 112 is meshed with the sun gear 111 and the gear ring 113 through at least three planetary gears.

Further, the gear ring 113 is connected to a top-loading input shaft 300 of a top-loading assembly of the engineering vehicle, and is used for transmitting power to the top-loading input shaft 300, and then the top-loading assembly is driven to work by the top-loading input shaft 300.

One end of the power take-off shaft 120 is connected to the carrier 112, and the other end of the power take-off shaft 120 is connected to a transmission case 200 of the construction vehicle, and the transmission case 200 is connected to an engine of the construction vehicle.

The motor shaft of the speed regulating motor 130 is connected with the sun gear 111, and the speed regulating motor 130 is positioned on one side of the planetary gear mechanism 110 away from the power take-off shaft 120. Therefore, in the present embodiment, the speed adjusting motor 130 and the power take-off shaft 120 are respectively located at two sides of the planetary gear mechanism 110, which is simpler and more reliable in structure and convenient to assemble. It can be appreciated that, since the power take-off shaft 120 directly takes force to the gearbox 200, the torque output by the gearbox 200 already meets the requirement of the loading assembly, in this embodiment, no reduction mechanism is needed between the ring gear 113 and the loading input shaft 300 to reduce the speed and increase the torque, so that the loading power take-off device 100 has enough installation space, and the speed regulating motor 130 and the power take-off shaft 120 can be respectively located at two sides of the planetary gear mechanism 110, so that the overall structure is simpler and more reliable, and the assembly is convenient.

Further, the power take-off shaft 120 is connected to the output shaft 210 of the gearbox 200 through the transmission assembly 140, so that the rotation speed output by the output shaft 210 of the gearbox 200 can be transmitted to the power take-off shaft 120 through the transmission assembly 140 to drive the power take-off shaft 120 to rotate.

In some embodiments, the drive assembly 140 is a coupling that connects the power take-off shaft 120 to the output shaft 210 of the transmission 200, and the coupling rotates together during transmission of motion and power, without decoupling under normal conditions. The coupling can also be used as a safety device to prevent the coupled power take-off shaft 120 from bearing excessive load, thereby playing an overload protection role.

Alternatively, the coupling may be selected as a rigid coupling, a flexible coupling or a safety coupling.

In the present embodiment, the transmission assembly 140 includes a first transmission gear 141 and a second transmission gear 142, the first transmission gear 141 is disposed on the power take-off shaft 120, the second transmission gear 142 is disposed on the output shaft 210 of the gearbox 200, and the first transmission gear 141 and the second transmission gear 142 are meshed with each other. Thus, by connecting the power take-off shaft 120 with the output shaft 210 of the transmission case 200 through the first transmission gear 141 and the second transmission gear 142, the transmission case 200 and the planetary gear mechanism 110 can be arranged on the same side, reducing the length in the axial direction, thereby saving space and making the structure more compact by rationally arranging the transmission case 200 and the planetary gear mechanism 110.

Further, the sizes of the first transmission gear 141 and the second transmission gear 142 can be adjusted according to design requirements, so as to obtain different transmission ratios. The method can be concretely divided into the following three modes:

in the first way, the first transmission gear 141 and the second transmission gear 142 have the same number of teeth, and thus, the transmission ratio between the first transmission gear 141 and the second transmission gear 142 is 1:1;

in the second way, the first transmission gear 141 is larger than the second transmission gear 142, so that the first transmission gear 141 and the second transmission gear 142 are in deceleration transmission;

in a third way, the first transmission gear 141 is smaller than the second transmission gear 142, whereby an acceleration transmission is provided between the first transmission gear 141 and the second transmission gear 142.

The three modes can be selected according to actual requirements, so as to ensure that the torque transmitted to the power take-off shaft 120 meets preset requirements.

Further, a third transmission gear (not shown) is provided on the upper input shaft 300, and the third transmission gear is meshed with the ring gear 113. Specifically, the inner peripheral surface of the ring gear 113 is provided with an inner tooth portion that meshes with the planetary gear on the carrier, and the outer peripheral surface of the ring gear 113 is provided with an outer tooth portion that meshes with the third transmission gear on the upper input shaft 300.

In this embodiment, when the loading and unloading device 100 of the engineering vehicle works, the first transmission gear 141 takes force from the second transmission gear 142 of the output shaft 210 of the gearbox 200, and the obtained rotation speed is in a proportional relationship with the rotation speed of the output shaft 210 of the gearbox 200, and is used as the input rotation speed of the planetary gear mechanism 110, and the rotation speed output by the gear ring 113 is kept constant through the adjustment of the planetary gear mechanism 110 and the speed regulating motor 130, so that the rotation speed of the loading input shaft 300 is kept constant.

Further, the sun gear 111, the ring gear 113, and the carrier 112 satisfy the following relationship:

w _S +K*w _R ＝(1+K)*w _pc ；

wherein w is _S For the rotation speed, w, of the sun gear 111 _R For the rotation speed, w, of the gear ring 113 _pc The rotation speed of the carrier 112 is K, which is the ratio of the number of teeth on the inner peripheral surface of the ring gear 113 to the number of teeth of the sun gear 111.

Further, optionally, the speed motor 130 is a permanent magnet motor or an asynchronous motor, and the permanent magnet motor or the asynchronous motor can convert mechanical energy into electrical energy or electrical energy into mechanical energy. Thus, the speed motor 130 can be used as a motor or a generator according to the requirements in the present embodiment.

The loading power take-off device 100 provided in the present embodiment takes off power from the transmission 200 of the engineering vehicle through the power take-off shaft 120, and then outputs the power to the loading input shaft 300 through the gear ring 113; when the power take-off shaft 120 takes off power, the sun gear 111 is driven to rotate by the speed regulating motor 130, so that the output rotation speed of the gear ring 113 is ensured to be the required rotation speed. Specifically, for a smaller rotational speed output by the gearbox 200, the speed-regulating motor 130 provides auxiliary power; when the rotation speed output by the gearbox 200 is high, the speed regulating motor 130 can be used as a generator to recover redundant power through power generation, so that energy is saved. Therefore, no matter what vehicle speed the worker Cheng Cheliang is at, the gear ring 113 can be output at a stable rotation speed only by inputting the matched rotation speed through the speed regulating motor 130, so that the work of the upper assembly of the engineering vehicle is ensured to be stable.

In addition, when the upper assembly does not need power, the speed regulating motor 130 is controlled to be in an idle state, so that the sun gear 111 is not constrained, and torque is not transmitted to the upper assembly through the planetary gear mechanism 110, thereby simplifying the structure and reducing the cost without adding a disengaging mechanism such as a clutch between the power take-off shaft 120 and the gearbox 200.

When the conventional power take-off is not taking off, the power take-off needs to be interrupted by a clutch or a disengaging mechanism. In the present embodiment, the sun gear 111, the planet carrier 112 and the ring gear 113 in the planetary gear mechanism 110 respectively correspond to three degrees of freedom, wherein any one of the input, the other output and the third direction must have a constraint so as to transmit torque. In this embodiment, the speed-adjusting motor 130 is regulated and controlled by the motor controller, and the speed-adjusting motor 130 does not generate torque through the motor controller, but only rotates in idle mode without generating power, so that the planet carrier 112 does not transmit torque to the gear ring 113, and therefore the rotation speed of the gear ring 113 is 0, and no power is transmitted to the upper input shaft 300. Therefore, a disengagement mechanism such as a clutch is not required to be additionally arranged between the power take-off shaft 120 and the gearbox 200, the structure is simplified, and the cost is reduced.

Further, the power taking shaft 120 takes force from the gearbox 200 as a main part, and the speed regulating motor 130 performs auxiliary speed regulation and supplements power as an auxiliary part, so that the torque and the rotating speed of the speed regulating motor 130 are smaller, the purpose of reducing the volume and the cost of the speed regulating motor 130 is achieved, and the whole structure is simpler and the assembly is convenient.

Example two

Referring to fig. 1 and 2, the present embodiment provides an up-loading and power-taking system. The power take-off and take-off system includes the power device 400 and the power take-off and take-off device 100 according to the first embodiment.

The electric energy device 400 is connected to the speed-adjustable motor 130, and the electric energy device 400 is used for storing and providing electric energy or recovering electric energy. Specifically, when the rotational speed output by the gearbox 200 is smaller, the electric energy device 400 provides electric energy for the speed-adjusting motor 130 to drive the speed-adjusting motor 130 to rotate, so as to provide auxiliary power for the planetary gear mechanism 110; when the rotation speed output by the gearbox 200 is high, the speed regulating motor 130 can be used as a generator to generate electricity and recover the surplus power by the electric energy device 400, so that energy sources are saved.

Further, the electric energy device 400 includes a battery module 410 and an electric energy conversion module 420, the battery module 410 is connected to the speed regulating motor 130 through the electric energy conversion module 420, and the battery module 410 is used for providing electric energy or recovering electric energy. Specifically, the battery module 410 is electrically connected to the power conversion module 420, and the power conversion module 420 is electrically connected to the speed motor 130. Optionally, the power conversion module 420 is an AD/AC conversion module.

Thus, the battery module 410 can rotate through the DC/AC conversion module speed regulating motor 130, thereby providing auxiliary power for the planetary gear mechanism 110; when the speed-adjusting motor 130 is a generator, the generated electric energy is stored in the battery module 410 through the DC/AC conversion module for standby.

The embodiment also provides an engineering vehicle. The engineering vehicle comprises a vehicle body and a loading assembly, wherein the loading assembly is arranged on the vehicle body, and the loading force taking system is applied to the loading assembly. The foregoing details of the optional implementation manner of the embodiment of the present application have been described in detail with reference to the accompanying drawings, but the embodiment of the present application is not limited to the specific details of the foregoing implementation manner, and various simple modifications may be made to the technical solution of the embodiment of the present application within the scope of the technical concept of the embodiment of the present application, and these simple modifications all belong to the protection scope of the embodiment of the present application.

In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described in detail in this application.

Moreover, any combination of the various embodiments of the present application may be made, so long as it does not deviate from the idea of the embodiment of the present application, and it should also be regarded as the disclosure of the embodiment of the present application.

Claims

1. An on-board power take-off device for use in an engineering vehicle, the on-board power take-off device (100) comprising:

the planetary gear mechanism (110) comprises a sun gear (111), a planet carrier (112) and a gear ring (113), wherein the gear ring (113) is connected with a loading input shaft (300) of a loading assembly of the engineering vehicle;

a power take-off shaft (120), one end of which is connected with the planet carrier (112) and the other end of which is connected with a gearbox (200) of the engineering vehicle; and

the speed regulating motor (130), the motor shaft of speed regulating motor (130) with sun gear (111) are connected, speed regulating motor (130) are located planet wheel mechanism (110) are kept away from one side of taking off power axle (120).

2. The on-board power take-off of claim 1, wherein the power take-off shaft (120) is connected to an output shaft (210) of the gearbox (200) via a transmission assembly (140).

3. The on-board power take-off of claim 2, wherein the transmission assembly (140) is a coupling.

4. The on-load power take-off of claim 2, wherein the transmission assembly (140) comprises a first transmission gear (141) and a second transmission gear (142), the first transmission gear (141) being disposed on the power take-off shaft (120), the second transmission gear (142) being configured to be disposed on an output shaft (210) of the gearbox (200), the first transmission gear (141) and the second transmission gear (142) being intermeshed.

5. The loading power take-off device according to claim 1, characterized in that the inner circumference of the gear ring (113) is provided with an inner tooth portion which meshes with a planetary gear on a planet carrier, the outer circumference of the gear ring (113) is provided with an outer tooth portion which meshes with a third transmission gear on the loading input shaft (300).

6. The on-board power take-off of claim 1, wherein the speed motor (130) is a permanent magnet motor or an asynchronous motor for converting mechanical energy into electrical energy or electrical energy into mechanical energy.

7. The loading and unloading device according to any one of claims 1-6, characterized in that the sun gear (111), the ring gear (113) and the carrier (112) satisfy the following relation:

w _S +K*w _R ＝(1+K)*w _pc ；

wherein w is _S For the rotational speed, w, of the sun gear (111) _R For the rotational speed, w, of the gear ring (113) _pc K is the ratio of the number of teeth on the inner peripheral surface of the ring gear (113) to the number of teeth on the sun gear (111), which is the rotational speed of the carrier (112).

8. A power take-off and take-up system comprising an electrical energy device (400) and a power take-off and take-up device (100) according to any one of claims 1-7, said electrical energy device (400) being connected to said speed motor (130), said electrical energy device (400) being adapted to store electrical energy for providing or recovering electrical energy.

9. The power take-off and on system according to claim 8, wherein the power device (400) comprises a battery module (410) and a power conversion module (420), the battery module (410) is connected with the speed-adjusting motor (130) through the power conversion module (420), and the battery module (410) is used for providing power or recovering power.

10. An engineering vehicle characterized by comprising a vehicle body and a top-loading assembly, wherein the top-loading assembly is arranged on the vehicle body, and the top-loading power take-off system according to any one of claims 8-9 is applied in the top-loading assembly.