阅读说明：本技术 用于提高履带车辆转向特性的动力传递结构 (Power transmission structure for improving steering characteristics of tracked vehicle ) 是由 韩勇浩 于 2019-06-14 设计创作，主要内容包括：对于履带车辆而言,需要转向时,停止左侧或右侧履带的转动,仅使一侧的履带处于行驶状态,以实现转向。因此,为了完成转向,需要在左右侧分别设置用于约束动力的装置,且车辆履带的侧面阻力大,从而履带容易脱轨或产生动力损失。本发明旨在利用差动齿轮原理来解决上述问题。即,本发明的用于提高履带车辆转向特性的动力传递结构,包括：左轮动力传递齿轮(200)及右轮动力传递齿轮(210),用于经由动力传递轴接收发动机的动力；左轮动力输入离合器齿轮(320)及右轮动力输入离合器齿轮(420),用于从所述左轮动力传递齿轮和所述右轮动力传递齿轮接收动力；左轮同步器(310)及右轮同步器(410),将来自所述左轮动力输入离合器齿轮和所述右轮动力输入离合器齿轮的动力施以约束而传递至所述左轮动力输出轴(300)和所述右轮动力输出轴(400)；左轮动力输出轴连接用锥齿轮(330)及右轮动力输出轴连接用锥齿轮(430),位于差动齿轮箱内,并与所述左轮动力输出轴(300)及所述右轮动力输出轴(400)相连；第一锥齿轮(510)及第二锥齿轮(520),在所述差动齿轮箱的内部,于前后方向上与所述左轮动力输出轴连接用锥齿轮(330)及所述右轮动力输出轴连接用锥齿轮(430)相连；以及差动齿轮箱制动器(530),用于控制所述差动齿轮箱的旋转。本发明通过如上所述的结构,在从一个动力源(发动机、电机等)向履带轮传递动力的轮轴上,设置用于约束左右动力的手段,从而提供使得履带车辆的转向变得容易的动力传递结构。(In the case of a crawler vehicle, when steering is required, the rotation of the left or right crawler belt is stopped, and only one crawler belt is driven to achieve steering. Therefore, in order to complete steering, it is necessary to provide a device for restraining power on each of the left and right sides, and the side resistance of the vehicle track is large, so that the track is likely to derail or cause power loss. The present invention aims to solve the above problems by using the differential gear principle. That is, the power transmission structure for improving the steering characteristic of a crawler vehicle of the present invention includes: a left wheel power transmission gear (200) and a right wheel power transmission gear (210) for receiving power of the engine via a power transmission shaft; a left wheel power input clutch gear (320) and a right wheel power input clutch gear (420) for receiving power from the left wheel power transmission gear and the right wheel power transmission gear; a left wheel synchronizer (310) and a right wheel synchronizer (410) which transmit the power from the left wheel power input clutch gear and the right wheel power input clutch gear to the left wheel power output shaft (300) and the right wheel power output shaft (400) by applying constraint; the bevel gear (330) for connecting the left wheel power output shaft and the bevel gear (430) for connecting the right wheel power output shaft are positioned in the differential gear box and connected with the left wheel power output shaft (300) and the right wheel power output shaft (400); a first bevel gear (510) and a second bevel gear (520) which are connected to the left-wheel power output shaft connection bevel gear (330) and the right-wheel power output shaft connection bevel gear (430) in the front-rear direction inside the differential case; and a differential gear box brake (530) for controlling rotation of the differential gear box. The present invention provides a power transmission structure that facilitates steering of a crawler vehicle by providing means for restraining right and left power on an axle that transmits power from one power source (an engine, a motor, etc.) to crawler wheels, with the above-described structure.)

1. A power transfer structure for improving steering characteristics of a tracked vehicle, comprising:

a left wheel power transmission gear (200) and a right wheel power transmission gear (210) for receiving power of the engine via a power transmission shaft;

a left wheel power input clutch gear (320) and a right wheel power input clutch gear (420) for receiving power from the left wheel power transmission gear and the right wheel power transmission gear;

a left wheel synchronizer (310) and a right wheel synchronizer (410) which transmit the power from the left wheel power input clutch gear and the right wheel power input clutch gear to the left wheel power output shaft (300) and the right wheel power output shaft (400) by applying constraint;

the bevel gear (330) for connecting the left wheel power output shaft and the bevel gear (430) for connecting the right wheel power output shaft are positioned in the differential gear box and connected with the left wheel power output shaft (300) and the right wheel power output shaft (400);

a first bevel gear (510) and a second bevel gear (520) which are connected to the left-wheel power output shaft connection bevel gear (330) and the right-wheel power output shaft connection bevel gear (430) in the front-rear direction inside the differential case; and

a differential case brake (530) for controlling rotation of the differential case.

2. The power transmission structure for improving the steering characteristics of a tracked vehicle as claimed in claim 1, further comprising: a left wheel power take-off shaft brake (340) and a right wheel power take-off shaft brake (440) for securing the left wheel power take-off shaft (300) and the right wheel power take-off shaft (400) when the left wheel synchronizer (310) and the right wheel synchronizer (410) are not connected to the left wheel power take-off shaft (300) and the right wheel power take-off shaft (400).

3. The power transmission structure for improving the steering characteristics of a tracked vehicle of claim 2, further comprising: and encoders which are provided on the left wheel power output shaft (300) and the right wheel power output shaft (400) and detect rotations of the left wheel power output shaft (300) and the right wheel power output shaft (400).

Technical Field

The present invention relates to a power transmission structure for improving the steering characteristics of a crawler vehicle.

Background

In the prior art prior to the present invention, a hybrid vehicle having an electric machine and an engine is disclosed. This car includes: an engine that generates driving force by combustion of fuel; a clutch that enables selective power transmission of an output of the engine via a generator; a propeller shaft that allows the output of the engine to be transmitted through the clutch; first and second sun gears for transmitting power through both sides of the propulsion shaft; first and second planetary gear stages receiving power from the first and second sun gears and transmitting the power to an output shaft; a compound planetary gear stage located between the first and second planetary gear stages and connected to the first and second planetary gear stages to transmit power; the first traction motor and the second traction motor are positioned at two ends of the compound planetary gear stage and are respectively connected with the first sun gear and the second sun gear for driving; the steering motor is positioned between the compound planetary gear stage and the first traction motor on one side and is connected with the first planetary gear stage and the steering shaft; and the controller is connected with the generator and is used for controlling the first traction motor, the second traction motor and the steering motor.

In another prior art, there is disclosed a multi-function agricultural powered vehicle comprising: an engine part 10 for providing power; an oil hydraulic motor (HST)20 for facilitating gear shifting; a shift portion 40 for realizing shifting; a crawler-type traveling unit 30; a main frame 60 for constituting a vehicle body; a loading part 70 positioned at an upper portion of the main frame 60; the engine part 10 is directly connected with an oil pressure electric device (HST)20 by a flange coupling mode, a speed changing part 40 is arranged behind the oil pressure electric device (HST)20, a rear wheel shaft 51 is connected with the speed changing part 40 through a universal joint 41, and the vehicle receives power from the rear wheel shaft 51 to realize driving.

Disclosure of Invention

Technical problem to be solved

In the case of a crawler vehicle, when steering is required, the rotation of the left or right crawler belt is stopped, and only one crawler belt is driven to achieve steering. Therefore, in order to complete steering, it is necessary to provide a device for restraining power on each of the left and right sides, and the turning radius is large, so that the frictional resistance of the ground on the side surface of the crawler belt increases, the crawler belt is likely to derail, and power loss due to friction also increases. The present invention is directed to solving the above-described problems of the prior art using a differential gear principle.

Technical scheme

In order to solve the above problems, a power transmission structure for improving steering characteristics of a crawler vehicle according to the present invention includes:

a left wheel power transmission gear 200 and a right wheel power transmission gear 210 for receiving power of the engine via power transmission shafts;

a left wheel power input clutch gear 320 and a right wheel power input clutch gear 420 for receiving power from the left wheel power transmission gear and the right wheel power transmission gear;

a left wheel synchronizer 310 and a right wheel synchronizer 410 for transmitting the power from the left wheel power input clutch gear and the right wheel power input clutch gear to the left wheel power output shaft 300 and the right wheel power output shaft 400 by applying constraint;

a bevel gear 330 for left wheel power output shaft connection and a bevel gear 430 for right wheel power output shaft connection are positioned in the differential gear box and connected with the left wheel power output shaft 300 and the right wheel power output shaft 400;

a first bevel gear 510 and a second bevel gear 520 connected to the left-wheel power output shaft connection bevel gear 330 and the right-wheel power output shaft connection bevel gear 430 in the front-rear direction inside the differential gear case; and a differential case brake 530 for controlling rotation of the differential case.

Further, the power transmission structure for improving the steering characteristic of the crawler vehicle according to the present invention further includes: a left wheel power output shaft brake 340 and a right wheel power output shaft brake 440 for fixing the left wheel power output shaft 300 and the right wheel power output shaft 400 when the left wheel synchronizer 310 and the right wheel synchronizer 410 are not connected with the left wheel power output shaft 300 and the right wheel power output shaft 400.

Further, the power transmission structure for improving the steering characteristic of the crawler vehicle according to the present invention further includes: encoders 350 and 450, which are provided on the left wheel power output shaft 300 and the right wheel power output shaft 400, for detecting rotation of the left wheel power output shaft 300 and the right wheel power output shaft 400.

Advantageous effects

The present invention provides a power transmission structure that facilitates steering of a crawler vehicle by providing means for restraining right and left power on an axle that transmits power from one power source (an engine, a motor, etc.) to crawler wheels, with the above-described structure.

Drawings

Fig. 1 is a configuration diagram of a power transmission device of the present invention.

Fig. 2 is a right-hand power transmission connection diagram of the present invention.

Fig. 3 is a left-hand power transmission connection diagram of the present invention.

Fig. 4 is a right-hand power transmission connection diagram of the present invention.

Fig. 5 is a left-hand power transmission connection of the present invention.

Detailed Description

The operation and effect of the present invention will be described below with reference to the drawings.

Referring to fig. 1, when power of the engine of the present invention is input, the left and right wheel power transmission gears receive the transmitted power to rotate, and the power is transmitted to the left and right wheel power output shafts through the connection of the left and right wheel synchronizers, so that the tracked vehicle is advanced or retreated.

Referring to fig. 2, a right-hand steering situation is illustrated where, from the forward mode connection described above, power to the right wheel synchronizer is blocked to interrupt power transmission to the right wheel power output shaft, so that the tracked vehicle achieves a right-hand steering.

At this time, in order to completely stop the movement of the right wheel due to inertia, a right wheel power output shaft brake may be used.

Fig. 3 is similar to the above-described configuration, except for the power of the left wheel synchronizer being blocked.

Fig. 4 is a view of the differential case (differential case) brake operated to block the rotation of the differential case so that the right wheel power output shaft rotates in the opposite direction to the left wheel power output shaft, and the track wheels on the left and right sides of the tracked vehicle rotate in opposite directions to each other, under the action of fig. 2, to achieve the effect of turning with a small turning radius.

Fig. 5 shows the opposite rotational action to that of fig. 4.

In addition, the left wheel power output shaft and the right wheel power output shaft are respectively provided with an encoder, so that the power transmission of the left wheel synchronizer and the right wheel synchronizer is adjusted according to the rotation proportion of the encoders according to the steering signal of a driver, and the rotating speeds of the left wheel power output shaft and the right wheel power output shaft are further adjusted.

Conventionally, when a crawler vehicle is steered, the crawler vehicle is steered in a state where one of the crawler wheels is stopped, then the crawler wheel is driven straight, and then the one of the crawler wheels is stopped again and steered according to a steering signal, thereby repeatedly performing the above-described processes.

For this reason, in addition to the configuration of the synchronizer, a dog clutch (dog clutch), a Torque converter (Torque converter), or the like may be used, and an electronic clutch may be used when the power is small.

Also, the present invention can be used not only for power transmission of the track wheels, but also for a personal riding device having two circular wheels in a horizontal direction, such as a balance car (Segway).

In this case, an electronic clutch or the like is used instead of the synchronizer, and running at various turning radii from the pivot rotation to the steering degree can be realized by one power source.

That is, the configuration may include a controller (not shown) for receiving a steering angle (not shown) input by the driver, and the controller may control the steering angle by a rotary encoder, an acceleration sensor, a linear encoder, or the like.

As another input to the controller, encoder signals for detecting the rotation of the left and right wheel power output shafts may be used.

The controller calculates a rotation ratio of the encoder for detecting rotation of the left and right wheel power output shafts based on the steering angle received from the rotary encoder, and performs pwm (pulse Width modulation) control on the left and right electronic clutches provided in place of the left and right wheel synchronizers in fig. 1 so that the left and right wheel power output shafts can rotate at the rotation ratio.

The present invention may further include a gyro sensor (not shown) or a geomagnetic sensor (not shown) in addition to the above configuration, and the present invention may calculate and use a rotation ratio of the encoder, detect whether or not the result of pwm (pulse Width modulation) control of the left and right electronic clutches provided instead of the left and right wheel synchronizers is rotated at a desired angle by the gyro sensor or the geomagnetic sensor, determine whether the tracked vehicle is oversteered or understeered, and further re-correct the rotation ratio of the encoder for detecting the rotation of the left and right wheel power output shafts, thereby providing the above power transmission control method.

Further, when the angle of oversteer or understeer exceeds 10% or more, the ground is in a state of slipping or severe friction, and therefore the traveling speed of the vehicle is limited to 30Km/h or less, whereby the present invention provides the above power transmission control method.

The present invention also provides the above power transmission control method by determining whether or not the direction in which the wheels move with the driving force coincides with the direction in which the wheels actually receive acceleration, and determining whether or not the crawler vehicle has a side slip (slip) based on the determination, and limiting the speed to 70% or less of the current running speed when the side slip has occurred.

The present invention achieves the above-described operation and effect by the following configuration.

The power transmission structure for improving the steering characteristics of a crawler vehicle of the present invention includes:

a left wheel power transmission gear 200 and a right wheel power transmission gear 210 for receiving power of the engine via power transmission shafts;

a left wheel power input clutch gear 320 and a right wheel power input clutch gear 420 for receiving power from the left wheel power transmission gear and the right wheel power transmission gear;

a left wheel synchronizer 310 and a right wheel synchronizer 410 which transmit the power from the left wheel power input clutch gear and the right wheel power input clutch gear to the left wheel power output shaft 300 and the right wheel power output shaft 400 by applying constraint;

a bevel gear 330 for left wheel power output shaft connection and a bevel gear 430 for right wheel power output shaft connection are positioned in the differential gear box and connected with the left wheel power output shaft 300 and the right wheel power output shaft 400;

a first bevel gear 510 and a second bevel gear 520 connected to the left-wheel power output shaft connection bevel gear 330 and the right-wheel power output shaft connection bevel gear 430 in the front-rear direction inside the differential gear case; and

a differential case brake 530 for controlling rotation of the differential case.

Further, the power transmission structure for improving the steering characteristic of the crawler vehicle according to the present invention further includes: a left wheel power output shaft brake 340 and a right wheel power output shaft brake 440 for fixing the left wheel power output shaft 300 and the right wheel power output shaft 400 when the left wheel synchronizer 310 and the right wheel synchronizer 410 are not connected with the left wheel power output shaft 300 and the right wheel power output shaft 400.

Further, the power transmission structure for improving the steering characteristic of the crawler vehicle according to the present invention further includes: encoders are provided on the left and right wheel power output shafts 300 and 400 to detect rotations of the left and right wheel power output shafts 300 and 400.

Further, according to the present invention, magnets are provided outside the differential case (differential case) so as to alternate between N-pole and S-pole, and coils (coils) are provided around the differential case at intervals corresponding to the positions of the magnets, so that the differential case can be stopped by applying direct current to the coils, and electric power can be obtained from the coils by the rotation of the differential case.

Further, the vehicle can be moved by turning on the differential case by applying an alternating current to the coil.