CN113306343A

CN113306343A - Drive axle

Info

Publication number: CN113306343A
Application number: CN202110760666.7A
Authority: CN
Inventors: 赵亮智; 陈龙; 肖求辉; 闫超; 廖颋; 胡彩凤; 邹立叶
Original assignee: Hengyang Heli Industrial Vehicle Co Ltd
Current assignee: Hengyang Heli Industrial Vehicle Co Ltd
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2021-08-27

Abstract

The invention discloses a drive axle, comprising: the bridge body, the driving part and the walking part; the bridge body is provided with a hollow inner cavity; the two ends of the bridge body are respectively detachably connected with the rear end of the driving part, and the front end of the driving part is embedded into the hollow inner cavity; the rear end of the driving part is connected with the walking part, and the driving part is used for driving the walking part to move. The device has simple structure, safety, effectiveness, reliability and simple and convenient operation, and can ensure that the vehicle runs along the inner wall of the arc tunnel.

Description

Drive axle

Technical Field

The invention relates to the technical field of vehicle accessories, in particular to a drive axle.

Background

A transaxle is a mechanism located at the end of a drive train that can vary the speed and torque from a transmission and transmit them to drive wheels. The drive axle is generally composed of a main speed reducer, a differential, a wheel transmission device, a drive axle housing and the like, and the steering drive axle is also provided with a constant velocity universal joint. In addition, the transaxle is also subjected to vertical, longitudinal, and lateral forces, as well as braking moments and reaction forces acting between the road surface and the frame or body. The transaxle is at the end of the powertrain and its basic functions are: firstly, engine torque transmitted by a universal transmission device is transmitted to driving wheels through a main speed reducer, a differential mechanism, a half shaft and the like, so that speed reduction and torque increase are realized; secondly, the transmission direction of the torque is changed through a bevel gear pair of the main reducer; thirdly, realizing differential action of wheels at two sides through a differential mechanism, and ensuring that the wheels at the inner side and the outer side turn at different rotating speeds; and fourthly, the functions of bearing and moment transmission are realized through the axle shell and the wheels.

At present, the traditional drive axle cannot enable the vehicle to run on the inner wall of the arc tunnel.

Therefore, it is an urgent problem to be solved by those skilled in the art to provide a drive axle suitable for a vehicle to travel on the inner wall of a circular arc tunnel.

Disclosure of Invention

The invention aims to provide a drive axle which is simple in structure, safe, effective, reliable and simple and convenient to operate and can enable a vehicle to run along the inner wall of an arc tunnel.

Based on the above purposes, the technical scheme provided by the invention is as follows:

a drive axle, comprising: the bridge body, the driving part and the walking part;

the bridge body is provided with a hollow inner cavity;

the two ends of the bridge body are respectively detachably connected with the rear end of the driving part, and the front end of the driving part is embedded into the hollow inner cavity;

the rear end of the driving part is connected with the walking part, and the driving part is used for driving the walking part to move.

Preferably, a control part is further included;

the control component is arranged between the driving component and the walking component;

the control component is detachably connected with the driving component and the walking component respectively.

Preferably, the device further comprises a supporting component and a sensor;

the supporting part is arranged on the bridge body and used for supporting the top and the bottom of the bridge body;

the sensor is disposed on the support member.

Preferably, the drive member is embodied as a drive motor.

Preferably, the running member is embodied as a rubber wheel.

Preferably, the control components include a transmission and brake assembly;

one end of the gearbox is detachably connected with the rubber wheel, and the other end of the gearbox is detachably connected with the bridge body;

the stopper assembly the driving motor all with the gearbox can be dismantled and be connected, and is located the rubber tyer with between the driving motor.

Preferably, the detachable connection is in particular: and (4) connecting through bolts.

The drive axle provided by the invention comprises an axle body, a drive part and a walking part; the bridge body is provided with a hollow inner cavity, two ends of the bridge body are respectively detachably connected with the driving part, and the driving part is embedded into the hollow inner cavity of the bridge body; the driving component is connected with the walking component and is used for driving the walking component to move.

In the actual application process, the front end of the driving part is embedded into a hollow inner cavity in the bridge body, and the rear end of the driving part is detachably connected with the two ends of the bridge body in the vertical direction; the rear end of the driving part is connected with the walking part in the horizontal direction. Because the rear end of the driving part is connected with the two ends of the bridge body, and the front end of the driving part is embedded into the hollow inner cavity of the bridge body, the front end of the driving part can move up and down along the vertical direction. When the vehicle runs on the inner wall of the arc tunnel, the front end of the driving part is abutted against the bottom of the hollow inner cavity, so that the driving axle is in a splayed shape. The splayed drive axle can be matched with the inner wall of the arc-shaped tunnel to keep the vehicle running stably.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a drive axle according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a drive axle according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Embodiments of the present invention are written in a progressive manner.

The embodiment of the invention provides a drive axle. The technical problems that in the prior art, a traditional drive axle is not suitable for the inner wall of an arc tunnel and a vehicle provided with the traditional drive axle cannot run in the arc tunnel are mainly solved.

A drive axle, comprising: a bridge body 1, a driving part 2 and a walking part 3;

the bridge body 1 is provided with a hollow inner cavity;

two ends of the bridge body 1 are respectively detachably connected with the rear end of the driving part 2, and the front end of the driving part 2 is embedded into the hollow inner cavity;

the rear end of the driving component 2 is connected with the walking component 3, and the driving component 2 is used for driving the walking component 3 to move.

Preferably, a control part 4 is also included;

the control component 4 is arranged between the driving component 2 and the walking component 3;

the control part 4 is detachably connected with the driving part 2 and the walking part 3 respectively.

In the actual application process, the control part is arranged between the driving part and the walking part; the control component is detachably connected with the driving component and the walking component respectively. The control component is mainly used for transmitting the torsion to the walking component under the condition that the driving component provides power, so that the walking component accelerates or decelerates, moves or stops.

Preferably, a support member 5 and a sensor 6;

the supporting part 5 is arranged on the bridge body 1 and is used for supporting the top and the bottom of the bridge body 1;

the sensor 6 is provided on the support member 5.

In practical use, the support member is disposed on the bridge body for supporting the top and bottom of the bridge body. The sensor is disposed on the support member. In this embodiment, the supporting component is specifically a drive axle slewing bearing; the sensor is an angle sensor; the sensor, the rotary support bearing, the driving part and the walking part are matched to realize the steering function of the drive axle.

The slewing bearing is a large bearing capable of bearing comprehensive loads, and can simultaneously bear large axial and radial loads and overturning moments. The slewing bearing is generally provided with a mounting hole, an internal gear or an external gear, a lubricating oil hole and a sealing device, so that the main machine is compact in design structure, simple and convenient to guide and easy to maintain. The slewing bearing has four series of four-point contact ball bearings of toothless type, external tooth type and internal tooth type, double-row angular contact ball bearing crossed cylindrical roller bearings, crossed tapered roller bearings and three-row cylindrical roller composite bearings, wherein the four-point contact ball bearing has higher static load capacity, the crossed cylindrical rollers have higher dynamic load capacity, the pre-interference of the crossed tapered roller bearings enables the bearings to have higher supporting rigidity and slewing precision, the three-row cylindrical roller composite bearings are led to the height of the bearings due to the improvement of bearing capacity, and various forces are respectively borne by different roller paths, so under the same stress condition, the diameter of the bearings can be greatly reduced, and the slewing bearing has the characteristic of high bearing capacity of enabling a host machine to be more compact. Slewing bearing is widely used in large slewing devices of equipment such as hoisting machinery, mining machinery, construction machinery, port machinery, ship machines, high-precision radar machinery, missile launcher and the like. Meanwhile, various slewing bearing with special structures can be designed, developed and produced according to the specific requirements of users.

The angle sensor, as the name implies, is used to detect an angle. It has a hole in its body to fit the shaft of the musical instrument. When attached to the RCX, the angle sensor counts every 1/16 shaft revolutions. When the rotation is made in one direction, the count is increased, and when the rotation direction is changed, the count is decreased. The count is related to the initial position of the angle sensor. When the angle sensor is initialized, its count value is set to 0, and you can reset it back to the original programmed state if necessary.

Preferably, the drive member 2 is embodied as a drive motor.

It should be noted that the motor is a rotating electromagnetic machine that operates by applying the electromagnetic induction principle, and is used for realizing conversion from electric energy to mechanical energy. In operation, electrical power is drawn from the electrical system and mechanical power is output to the mechanical system. The motor driving system mainly comprises a motor and a controller (inverter), the cost ratio of the driving motor to the motor controller is about 1:1, and the specific structure and the cost constitution of the motor are different according to different design principles and classification modes. The control system of the motor mainly plays a role in adjusting the running state of the motor so as to meet different running requirements of the whole vehicle. Common drive motors are: direct current motor, alternating current asynchronous motor, permanent magnet motor, switched reluctance motor. Based on the consideration of cost and applicable arc tunnel driving scene, the alternating current asynchronous motor is selected for the embodiment.

The running gear 3 is preferably embodied as a rubber wheel.

In the present embodiment, the rubber wheel is used as the traveling component, and the rubber wheel is a circular ring-shaped elastic rubber wheel product which is assembled on various vehicles or machines and rolls in a grounding mode, is usually installed on a metal rim, and has the functions of supporting a vehicle body, buffering external impact fit, reducing vibration, reducing temperature and the like.

Preferably, the control means 4 comprise a gearbox 41 and a brake assembly 42;

one end of the gearbox 41 is detachably connected with the rubber wheel, and the other end of the gearbox is detachably connected with the bridge body 1;

brake assembly 42, driving motor all can dismantle with gearbox 41 and be connected, and lie in between rubber wheel and the driving motor.

The transmission case is a gear case that changes the gear ratio and the direction of movement. The driving mechanism is directly connected with a driving motor and then transmits force to wheels through a transmission part, and the driving mechanism is realized through differential speed of the driving motors on two sides during steering without a clutch. The main functions are as follows: changing the driving force and the running speed (shifting) of the vehicle with the engine speed and the torque unchanged; the vehicle can run in reverse (reverse); the engine may be parked without stalling (neutral). According to the transmission type, the gear type gear box can be divided into a double-shaft type, a three-shaft type and a combined type. The twin shaft type has two main shafts (excluding the reverse shaft) and is decelerated only by a pair of gears. The three-shaft type has three main shafts (a first shaft, an intermediate shaft and a second shaft) and is subjected to reduction by two pairs of gears. The component formula is composed of two gearboxes in series or in parallel, so that more gears can be obtained by using fewer gears. In the embodiment, the selected gearbox is a three-shaft type gearbox, so that the function of driving the drive axle to move forwards or backwards can be realized

The brake assembly is a set of brake equipment and comprises a brake, a master cylinder, a slave cylinder and other parts; however, the brake is just one part, and is generally mounted on a wheel, and is divided into a disc brake and a drum brake, which describe a disc or a drum. The brake mainly comprises a brake frame, brake parts, an operating device and the like, and some brakes are also provided with automatic adjusting devices of brake part gaps. In order to reduce the braking torque and the structural size, the brake is usually arranged on a high-speed shaft of the equipment, but large equipment (such as a mine hoist, an elevator and the like) with higher requirements on safety is arranged on a low-speed shaft close to the working part of the equipment, and some brakes are standardized and serialized and manufactured by professional factories for selection. In this embodiment, a wet brake assembly is selected.

In the actual application process, the gearbox is used for realizing the speed changing function of the drive axle, and the speed of a vehicle provided with the drive axle is adjusted or the steering is realized when the vehicle runs on the inner wall of the arc tunnel.

It should be noted that, in this embodiment, the driving motor, the transmission case, the brake assembly and the rubber wheel are all set to be two in bilateral symmetry, wherein, when the left and right driving motors are set to be different gears, that is, the current values input into the left and right driving motors are different, thereby resulting in different torques for driving the left and right rubber wheels, the differential speed realizes rotating around the center of the drive axle rotation support bearing, and the angle sensor is used for obtaining the steering angle.

In the practical application process, in order to facilitate maintenance and replacement, the parts in the drive axle are connected in a detachable connection mode, and specifically, the parts are connected through bolts.

In the embodiments provided in the present application, it should be noted that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

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

It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the practical limit conditions of the present application, so that the modifications of the structures, the changes of the ratio relationships, or the adjustment of the sizes, do not have the technical essence, and the modifications, the changes of the ratio relationships, or the adjustment of the sizes, are all within the scope of the technical contents disclosed in the present application without affecting the efficacy and the achievable purpose of the present application.

The present invention provides a drive axle as described in detail above. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A drive axle, comprising: the bridge body (1), the driving part (2) and the walking part (3);

the bridge body (1) is provided with a hollow inner cavity;

the two ends of the bridge body (1) are respectively detachably connected with the rear end of the driving part (2), and the front end of the driving part (2) is embedded into the hollow inner cavity;

the rear end of the driving part (2) is connected with the walking part (3), and the driving part (2) is used for driving the walking part (3) to move.

2. The drive axle according to claim 1, further comprising a control member (4);

the control component (4) is arranged between the driving component (2) and the walking component (3);

the control component (4) is detachably connected with the driving component (2) and the walking component (3) respectively.

3. The drive axle according to claim 2, further comprising a support member (5) and a sensor (6);

the supporting part (5) is arranged on the bridge body (1) and is used for supporting the top and the bottom of the bridge body (1);

the sensor (6) is arranged on the support part (5).

4. Drive axle according to claim 3, characterized in that the drive member (2) is embodied as a drive motor.

5. Drive axle according to claim 4, characterized in that the walking part (3) is embodied as a rubber wheel.

6. The drive axle according to claim 5, characterized in that the control member (4) comprises a gearbox (41) and a brake assembly (42);

one end of the gearbox (41) is detachably connected with the rubber wheel, and the other end of the gearbox is detachably connected with the bridge body (1);

the brake assembly (42) and the driving motor are detachably connected with the gearbox (41) and are positioned between the rubber wheel and the driving motor.

7. Drive axle according to any of claims 1-6, characterized in that the detachable connection is in particular: and (4) connecting through bolts.