CN211423231U

CN211423231U - Multi-wheel drive anti-skid system

Info

Publication number: CN211423231U
Application number: CN201922492788.3U
Authority: CN
Inventors: 何树营; 曹春花; 韩伟; 付衍法; 赵娜
Original assignee: Shantui Chutian Construction Machinery Co Ltd
Current assignee: Shantui Chutian Construction Machinery Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-04
Anticipated expiration: 2029-12-31

Abstract

The utility model provides a many rounds of drive anti-skidding systems, include: the system comprises a controller, a plurality of traveling motors, a traveling pump, a plurality of speed sensors, a plurality of brake valves, a plurality of brakes, an oil supply unit and an oil receiving unit; the speed sensors are respectively electrically connected with the walking motors; the walking pump is connected with the oil supply unit; the oil supply unit and the oil receiving unit are both connected with the traveling motor; the oil receiving unit is connected with the walking pump; the brakes are respectively connected with the walking motors; the plurality of brake valves are respectively connected with the plurality of brakes, and the plurality of speed sensors and the plurality of brake valves are electrically connected with a controller; the utility model provides a pair of many wheel drive antiskid adopts the fuel feeding of a plurality of brakers and every wheel limit stopper of brake valve independent control to many wheel drive's machinery, implements effective braking and prevents that the drive wheel from skidding.

Description

Multi-wheel drive anti-skid system

Technical Field

The utility model belongs to the technical field of mechanical engineering, concretely relates to multi-wheel drive anti-skidding system.

Background

When the ground adhesion condition of a multi-wheel drive engineering machine (such as a milling machine which usually adopts four-wheel drive) is not good, the driving force of the machine is larger than the ground adhesion force, and at the moment, if the flow supply of a motor is not forcibly shunted, the slipping phenomenon of a certain wheel can occur, namely the slipping phenomenon of the driving wheel can be generated, and the driving force is reduced.

The method for avoiding the slipping phenomenon of the mechanical driving wheel at present is to arrange a flow dividing valve (also called a speed synchronization valve) which can supply the same flow (equal flow dividing) to more than two executing elements from the same oil source in a hydraulic system or supply the flow (proportional flow dividing) to the two executing elements according to a certain proportion so as to realize the speed synchronization or the fixed ratio relation of the two executing elements. As shown in fig. 1, the flow dividing valve is controlled to supply oil to each wheel in equal quantity, so that the wheels are prevented from slipping at an overspeed, the flow dividing control valve does not work under the normal working state of each wheel, the flow dividing control valve is in a free oil supply state, and the walking pump supplies flow to each walking motor according to the requirement through the flow dividing valve so as to meet the linear walking and turning actions of the vehicle; when the ground is not well adhered and a certain wheel slips, the shunt control valve is electrified to work, the shunt control valve is in a forced shunt state, the walking pump supplies oil to all walking motors in an equivalent manner through the shunt valve, the overspeed slipping of a certain motor is avoided, and the driving force is provided through other motors with good adhesive force.

The oil supply loss of the system is large by the mode, the anti-skid effect is general, and the safety is low.

SUMMERY OF THE UTILITY MODEL

The above-mentioned not enough to prior art, the utility model provides a many wheel drive anti-skidding system to solve above-mentioned technical problem.

The utility model provides a many rounds of drive anti-skidding systems, include: the system comprises a controller, a plurality of traveling motors, a traveling pump, a plurality of speed sensors, a plurality of brake valves, a plurality of brakes, an oil supply unit and an oil receiving unit; the speed sensors are respectively electrically connected with the walking motors; the walking pump is connected with the oil supply unit; the oil supply unit and the oil receiving unit are both connected with the traveling motor; the oil receiving unit is connected with the walking pump; the brakes are respectively connected with the walking motors; the plurality of brake valves are respectively connected with the plurality of brakes, and the plurality of speed sensors and the plurality of brake valves are all connected with a controller.

Furthermore, an electromagnetic directional valve is arranged in an oil supply oil path of the brake and used for controlling the separation and combination of the brake, so that the driving wheel is prevented from continuously slipping.

Furthermore, an electric proportional pressure reducing valve is arranged in an oil supply oil path of the brake and used for controlling current, so that the corresponding brake generates certain braking, and the driving wheel is prevented from continuously slipping.

Further, the system also comprises a flushing valve, the flushing valve is connected with the oil receiving unit, and the flushing valve is connected with the controller.

The utility model has the advantages that,

the utility model provides a pair of many wheel drive antiskid adopts the fuel feeding of a plurality of brakers and every wheel limit stopper of brake valve independent control to many wheel drive's machinery, implements effective braking and prevents that the drive wheel from skidding.

Furthermore, the utility model relates to a principle is reliable, and simple structure has very extensive application prospect.

Drawings

In order to more clearly illustrate the embodiments of the present invention 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, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of the prior art structure of the present application;

FIG. 2 is a schematic block diagram of a system according to an embodiment of the present application;

FIG. 3 is a schematic diagram of an electrically controlled circuit connection configuration according to one embodiment of the present application;

wherein, 1, a controller; 2. a travel motor; 3. a walking pump; 4. a speed sensor; 5. a brake valve; 6. a brake; 7. an oil supply unit; 8. an oil receiving unit; 9. a flush valve; 10. a shunt control valve; 11. a flow divider valve.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "back", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1

As shown in fig. 1, an embodiment of the present application provides a multi-wheel drive antiskid system, including: the system comprises a controller 1, four traveling motors 2, a traveling pump 3, four speed sensors 4, four brake valves 5, four brakes 6, an oil supply unit 7, an oil receiving unit 8 and a flushing valve 9; the four speed sensors 3 are respectively and electrically connected with the four walking motors 2; the walking pump 3 is connected with an oil supply unit 7; the oil supply unit 7 and the oil receiving unit 8 are both connected with the traveling motor 2; the flushing valve 9 is connected with the oil receiving unit 8; the oil receiving unit 8 is connected with the walking pump 3; the four brakes 6 are respectively connected with the four walking motors 2; the four brake valves 5 are respectively connected with the plurality of brakes 6, and the four speed sensors 3, the four brake valves 5 and the flushing valve 9 are all electrically connected with the controller 1; an electromagnetic directional valve is arranged in an oil supply path of the brake 6.

In the present embodiment, the rotational speed of each traveling motor 2 is detected by the speed sensor 4, the average value of the rotational speeds of the traveling motors 2 is obtained, the difference between the rotational speed of each traveling motor 2 and the average value is compared, and when the rotational speed of a certain traveling motor 2 is higher than the average value and exceeds a set limit, it is considered that the driving wheel corresponding to the traveling motor 2 is over-slipped. The electromagnetic directional valve is powered off, so that the corresponding brake can effectively brake, the rotating speed of the driving wheel is reduced, the corresponding brake can generate certain brake, and the driving wheel is prevented from continuously slipping; when the multi-wheel driving machine needs to be parked for a long time, the four brakes 6 are all powered off; the driving wheel is braked for a long time, and the driving wheel is prevented from rotating and slipping when not in work.

Example 2

The embodiment of the application provides a multi-wheel drive anti-skidding system, and on the basis of embodiment 1, the difference lies in that an electric proportional pressure reducing valve is arranged in an oil supply oil way of a brake, and the electric proportional pressure reducing valve is used for controlling current, so that the corresponding brake generates certain braking, and continuous slipping of a driving wheel is avoided.

When the speed sensor 4 judges that the driving wheel corresponding to a certain walking motor 2 slips at an overspeed, the required braking effect is obtained by reducing or increasing the control current of the corresponding brake, the rotating speed of the driving wheel is gradually recovered, and the rotating speed of the walking motor 2 is compared in a recycling mode, so that the dynamic control of the rotating speed of the walking motor 2 is achieved.

Although the present invention has been described in detail by referring to the drawings in conjunction with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and substance of the present invention, and these modifications or substitutions are intended to be within the scope of the present invention/any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A multi-wheel drive antiskid system comprising: the system comprises a controller, a plurality of traveling motors, a traveling pump, a plurality of speed sensors, a plurality of brake valves, a plurality of brakes, an oil supply unit and an oil receiving unit; the speed sensors are respectively electrically connected with the walking motors; the walking pump is connected with the oil supply unit; the oil supply unit and the oil receiving unit are both connected with the traveling motor; the oil receiving unit is connected with the walking pump; the brakes are respectively connected with the walking motors; the plurality of brake valves are respectively connected with the plurality of brakes, and the plurality of speed sensors and the plurality of brake valves are electrically connected with a controller.

2. A multi-wheel drive antiskid system according to claim 1 wherein an electromagnetic directional valve is provided in an oil supply path of the brake.

3. A multi-wheel drive antiskid system according to claim 1 wherein an electro proportional pressure reducing valve is provided in an oil supply path of the brake.

4. The multi-wheel drive antiskid system of claim 1 further comprising a flush valve, wherein the flush valve is connected to the oil recovery unit and the flush valve is connected to the controller.