CN215330156U

CN215330156U - Active damping control system of working device of electric loader

Info

Publication number: CN215330156U
Application number: CN202121620828.9U
Authority: CN
Inventors: 孟惠艳; 庄伟娜
Original assignee: Ensign Heavy Industries Co ltd
Current assignee: Ensign Heavy Industries Co ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2021-12-28
Anticipated expiration: 2031-07-09

Abstract

The utility model discloses an active damping control system of an electric loader working device, which comprises: the hydraulic control system comprises a main controller, and a display, a mode switch, a pilot handle, a bucket angle sensor, a boom height sensor, a traveling speed sensor, a boom large cavity pressure sensor, a boom small cavity pressure sensor, a boom action control valve and a bucket action control valve which are connected with the main controller. The active damping control system adopts the hydraulic motor to drive and control the lifting of the movable arm, the overturning and the retraction of the bucket, and is provided with the pressure sensor of the large cavity and the small cavity of the movable arm and the angle sensor for controlling the height limitation of the movable arm and the leveling of the bucket.

Description

Active damping control system of working device of electric loader

Technical Field

The utility model relates to the field of loaders, in particular to an active damping control system of a working device of an electric loader.

Background

The information disclosed in this background of the utility model is only for enhancement of understanding of the general background of the utility model and is not necessarily to be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

The conventional shovel loader has few active damping function configurations for a working device, even if the conventional shovel loader has the function, only the recoil control of the lifting arm is realized, the running control switch is arranged, after the running control switch is activated, the running electromagnetic valve is controlled, a buffer oil circuit is formed between the piston rod end and the bottom end of the lifting arm through the movement of the valve column, and when the shovel loader runs on a bumpy road surface, the pressure fluctuation at the bottom of the lifter is absorbed by the running control energy accumulator, so that the vibration of the whole vehicle is reduced. However, the following disadvantages of the damping device still exist: (1) an energy accumulator and a running electromagnetic valve need to be added independently, and the cost is high. (2) The technical route mainly absorbs impact, and cannot fundamentally solve the problem of material scattering due to low sensitivity when a complex road surface and a bucket are fully loaded. (3) The hydraulic oil circuit is complex in design, and the installation space of parts needs to be considered synchronously.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems, the utility model provides an active damping control system of an electric loader working device, which can effectively improve driving stability and reduce the failure rate of the whole vehicle caused by damage of parts due to vibration. In order to achieve the above object, the technical solution of the present invention is as follows.

An active damping control system for a work implement of an electric loader, comprising: the device comprises a main controller, and a display, a mode switch, a pilot handle, a bucket angle sensor, a boom height sensor, a running speed sensor, a boom large cavity pressure sensor, a boom small cavity pressure sensor, a boom action control valve and a bucket action control valve which are connected with the main controller.

Further, the mode switch comprises a working mode switch and a transportation mode switch, so that the main controller can select the damping mode according to different modes.

Further, the boom action control valve includes a boom raising solenoid valve and a boom lowering solenoid valve, and the solenoid valves are connected to the boom hydraulic system, so as to control the hydraulic system according to the opening degree of the solenoid valves, thereby realizing the raising or lowering action of the boom.

Further, the bucket action control valve comprises a bucket overturning electromagnetic valve and a bucket retracting electromagnetic valve, and the electromagnetic valve is connected with the boom hydraulic system so as to control the hydraulic system according to the opening degree of the electromagnetic valve and further realize the action of overturning or retracting the bucket.

Further, the arm raising solenoid valve, the boom lowering solenoid valve, the bucket turning solenoid valve, and the bucket retracting solenoid valve are proportional solenoid valves.

Furthermore, the bucket angle sensor is arranged at the position where the bucket is hinged with the front frame, and detects the deflection angle of the bucket and the reference position in real time.

Furthermore, the movable arm height sensor is fixed at the hinged position of the movable arm and the front frame, and detects the change of the height of the movable arm from the ground in real time.

Furthermore, the display is also provided with at least one of an active damping state display lamp, an alarm lamp and an activation indicator lamp.

Furthermore, a CAN diagnosis interface is also arranged on the side surface of the main controller.

Furthermore, the system also comprises a power supply module connected with the main controller so as to supply power to the main controller.

Compared with the prior art, the utility model has the following beneficial effects:

(1) the active damping control system adopts the hydraulic motor to drive and control the lifting of the movable arm, the overturning and the withdrawing of the bucket, and configures the pressure sensor of the large cavity and the small cavity of the movable arm and the angle sensor for controlling the height limitation of the movable arm and the leveling of the bucket, so that the active damping function of the working device can completely utilize the electronic control unit configured by the existing loader, and a monitoring module, a driving module and an executing mechanism are not required to be added independently, so that the existing loader is not required to be continuously and greatly changed, and the cost is controlled at a lower level.

(2) The active damping mode of the active damping control system can effectively reduce the vibration of a vehicle on a bumpy road surface, reduce the phenomenon of early damage caused by the rough and violent vibration of the road surface during the running process of the vehicle due to the movable arm, the hinged part of the bucket, the oil cylinder and other parts, reduce the failure rate of the whole vehicle, and contribute to improving the driving comfort of a driver and reducing the driving fatigue.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.

Fig. 1 is a schematic structural diagram of an active damping control system of a work implement of an electric loader according to an embodiment of the present invention.

The scores in the figure represent: 1-a main controller, 2-a display, 3-a mode switch, 4-a pilot handle, 5-a bucket angle sensor, 6-a boom height sensor, 7-a running speed sensor, 8-a boom large cavity pressure sensor, 9-a boom small cavity pressure sensor, 10-a boom action control valve, 10.1-a boom raising electromagnetic valve, 10.2-a boom lowering electromagnetic valve, 11-a bucket action control valve, 11.1-a bucket overturning electromagnetic valve, 11.2-a bucket retracting electromagnetic valve, 12-an active damping state display lamp, 13-an alarm lamp, 14-an activation indicator lamp, 15-a CAN diagnosis interface and 16-a power supply module.

Detailed Description

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the utility model as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

For convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate that the directions of movement are consistent with those of the drawings, and do not limit the structure, but merely facilitate the description of the utility model and simplify the description, rather than indicate or imply that the referenced device or element needs to have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. The description will be further described with reference to the drawings and specific examples.

Referring to fig. 1, an example active damping control system for a work implement of an electric loader includes: a main controller 1, a display 2, a mode switch 3, a pilot handle 4, a bucket angle sensor 5, a boom height sensor 6, a travel speed sensor 7, a boom large chamber pressure sensor 8, a boom small chamber pressure sensor 9, a boom action control valve 10, and a bucket action control valve 11, wherein:

the display 2 is connected with the main controller 1, the display 2 is fixed in front of a driver in a cab, relevant information can be observed conveniently, the main controller 1 is connected with the power supply module 16, power is supplied to the main controller 1, the main controller 1 has the functions of data acquisition, processing, calculation, self-learning, self-diagnosis, fault management and alarm, PWM output and the like, is a core component for realizing the active damping function of the working device, and the main controller is JCIO-34 in model and purchased from Gaojia corporation limited science and technology development.

The mode switch 3, the pilot handle 4, the bucket angle sensor 5, the boom height sensor 6, the travel speed sensor 7, the boom large chamber pressure sensor 8, the boom small chamber pressure sensor 9, the boom operation control valve 10, and the bucket operation control valve 11 are connected to the main controller 1, and can transmit signals.

Specifically, the mode switch 3 includes two modes of operation and transportation, wherein the operation mode refers to a state that the loader travels in no-load mode, the transportation mode refers to a state that the loader travels in transporting materials, and after different mode switches are pressed, the main controller 1 selects a damping mode according to different modes.

The bucket angle sensor 5 is installed at a hinge position (one of three hinge points) of the bucket and the front frame, and detects the deflection angle of the bucket and a reference position in real time. The movable arm height sensor 6 is fixed at the hinged position of the movable arm and the front frame (any one of the left movable arm and the right movable arm), and detects the change of the height of the movable arm from the ground in real time.

The boom action control valve 10 comprises a boom raising electromagnetic valve 10.1 and a boom lowering electromagnetic valve 10.2, the bucket action control valve 11 comprises a bucket overturning electromagnetic valve 11.1 and a bucket retracting electromagnetic valve 11.2, the electromagnetic valves are connected with a boom hydraulic system, and the boom raising electromagnetic valve 10.1, the boom lowering electromagnetic valve 10.2, the bucket overturning electromagnetic valve 11.1 and the bucket retracting electromagnetic valve 11.2 are proportional electromagnetic valves, so that the hydraulic system is controlled according to the opening degree of the electromagnetic valves, and then the lifting or lowering action of the boom and the turning or retracting action of the bucket are realized.

With continued reference to fig. 1, in another embodiment, at least one of an active damping state display lamp 12, a warning lamp 13 and an activation indicator lamp 14 is further disposed on the display 2 so as to remind the driver to master the vehicle dynamics, and when any one of the switches, the sensors and the proportional valve fails or the communication is abnormal, the warning lamp 13 gives an alarm and displays the working state of the system in real time.

With continued reference to fig. 1, in another embodiment, the side of the main controller 1 is further provided with a CAN diagnostic interface 15, which is mainly used for connecting to a notebook to write programs and read data, and performing fault analysis or upgrading control programs in the main controller.

The main controller 1 integrates data sources through logic calculation according to state information of a bucket angle, a movable arm height, pressures of a large cavity and a small cavity of the movable arm, front-back and left-right displacement of a pilot handle, a proportional electromagnetic valve and the like acquired by each sensor, adjusts the working speed of a hydraulic motor, controls quick actions of the movable arm and the bucket in real time, reduces up-down or front-back high-frequency vibration of a working device, and keeps the stability of a vehicle. If active damping is started, the main controller 1 adjusts the hydraulic system of the movable arm in real time according to information collected by each sensor so that the height of the movable arm is adjusted along with the bumping of the loader, for example, the phenomenon that the height of the movable arm is kept within a set range all the time by recognizing that the bumping of the loader is too large, adjusting the height of the movable arm to properly rise or fall and offsetting part of the bumping is avoided, and the early damage phenomenon caused by severe vibration due to uneven road surface of parts such as the movable arm, a bucket hinge part and an oil cylinder in the driving process of a vehicle is prevented.

In the "transportation" mode, when the traveling speed of the loader is greater than the set value, it is necessary to start the shock absorption mode in the fast traveling mode, the speed information is collected by the traveling speed sensor 7 and transmitted to the main controller 1, the main controller 1 starts to switch to the active shock absorption mode, and the active shock absorption state display lamp 12 is turned on the display. If the pilot electric control handle is operated in the mode, the handle signal is prioritized, and the active damping mode exits, namely, when the manual intervention occurs in the active damping mode, the manual intervention signal is preferentially executed.

The main controller 1 calculates the pressure difference between the large cavity and the small cavity of the movable arm according to the pressure measured by the pressure sensor 8 of the large cavity of the movable arm and the pressure measured by the pressure sensor 9 of the small cavity of the movable arm, calculates the weight of the shoveled material according to the height of the movable arm detected by the height sensor 6 of the movable arm, adjusts the angle range and the height difference of the movable arm through a hydraulic adjusting system such as a bucket action control valve 11 and the like, and can adjust in real time according to the weight of the material.

The active damping control system adopts the hydraulic motor to drive and control the lifting of the movable arm, the overturning and the withdrawing of the bucket, and the large cavity and the small cavity pressure sensors of the movable arm and the angle sensor for controlling the height limitation of the movable arm and the leveling of the bucket are configured, so that the active damping function of the working device can completely utilize the electric control unit configured by the existing loader without independently adding a monitoring module, a driving module and an executing mechanism, the problem that the bumping vibration of the working device on a rough road surface causes the early abrasion of related parts is solved, the operation intensity of a driver is reduced, the working efficiency is improved, and the materials are ensured not to fall in the transportation process.

Finally, it should be understood that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.

Claims

1. An active damping control system for a work implement of a power loader, comprising: the hydraulic control system comprises a main controller, and a display, a mode switch, a pilot handle, a bucket angle sensor, a boom height sensor, a traveling speed sensor, a boom large cavity pressure sensor, a boom small cavity pressure sensor, a boom action control valve and a bucket action control valve which are connected with the main controller.

2. The active damping control system of an electric loader working device according to claim 1, wherein the mode switch includes two mode switches of a working mode and a transport mode, wherein the working mode refers to a state where the loader is walking without load, and the transport mode refers to a state where the loader is walking while transporting materials.

3. The active damping control system of an electric loader working device according to claim 1, wherein the boom motion control valve includes a boom-up solenoid valve and a boom-down solenoid valve, and the solenoid valves are connected to a boom hydraulic system.

4. The active damping control system of an electric loader working device according to claim 3, wherein the bucket motion control valve includes a bucket tilt solenoid valve and a bucket retract solenoid valve, and the solenoid valves are connected to a boom hydraulic system.

5. The active damping control system of an electric loader working apparatus according to claim 4, wherein the arm raising solenoid valve, the boom lowering solenoid valve, the bucket overturning solenoid valve, and the bucket retracting solenoid valve are proportional solenoid valves.

6. The active damping control system of an electric loader work apparatus of claim 1, further comprising at least one of an active damping status indicator light, a warning light, and an activation indicator light disposed on the display.

7. The active damping control system of a power loader work device of claim 1, wherein the master controller is further provided with a CAN diagnostic interface on a side thereof.

8. The active damping control system for a power loader work device of claim 1 further comprising a power module connected to the main controller.

9. The active damping control system for an electric loader work apparatus of any one of claims 1-8 wherein the bucket angle sensor is mounted at the bucket to front frame articulation location.

10. The active damping control system of an electric loader working device according to any one of claims 1-8, characterized in that the boom height sensor is fixed at a position where the boom is hinged to the front frame.