CN-122010026-A - Electric fork truck controlling means

CN122010026ACN 122010026 ACN122010026 ACN 122010026ACN-122010026-A

Abstract

The invention discloses an electric forklift control device which comprises an on-site information acquisition module, a load weight acquisition module, a portal height acquisition module and a control module, wherein the on-site information acquisition module acquires driving on-site information of a driver, the load weight acquisition module acquires load weight information of an electric forklift, the portal height acquisition module acquires portal height information of the electric forklift, the control module receives the driving on-site information, the load weight information and the portal height information, determines an on-site level state according to the driving on-site information, determines an actual driving off-site warning level state according to the load weight information and the portal height information, and carries out hierarchical control on the electric forklift according to the on-site level state and the actual driving off-site warning level state. The method combines the load weight of the electric forklift and the height of the portal to realize the judgment of the in-place state of the driver in the running of the electric forklift and the automatic control of the electric forklift, thereby improving the accuracy of in-place detection of the driving and guaranteeing the running safety of the electric forklift.

Inventors

ZHANG YIXU
SUN YUXIAO
MA XIYANG

Assignees

临工重机股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260413

Claims (10)

1. The electric forklift control device is characterized by comprising an in-place information acquisition module, a load weight acquisition module, a portal height acquisition module and a control module; the on-site information acquisition module is used for acquiring driving on-site information of a driver; the load weight acquisition module is used for acquiring load weight information of the electric forklift; the portal height acquisition module is used for acquiring portal height information of the electric forklift; The control module is respectively in communication connection with the on-site information acquisition module, the load weight acquisition module and the portal height acquisition module and is used for receiving the driving on-site information, the load weight information and the portal height information, determining an on-site grade state according to the driving on-site information, determining an actual driving off-site warning grade state according to the load weight information and the portal height information and carrying out grading control on the electric forklift according to the on-site grade state and the actual driving off-site warning grade state; The on-site level state comprises a primary on-site state and a secondary on-site state; The actual driving leaving warning level state comprises a first-level leaving warning state and a second-level leaving warning state, wherein the load weight information corresponding to the second-level leaving warning state is greater than the load weight information corresponding to the first-level leaving warning state, and/or the portal height information corresponding to the second-level leaving warning state is greater than the portal height information corresponding to the first-level leaving warning state; When the control module determines that the in-place level state is the secondary in-place state and the actual driving absence warning level state is the primary absence warning state, the control module is used for controlling the electric forklift according to the driver absence time.
2. The control device of an electric forklift according to claim 1, wherein when the control module determines that the on-site level state is the secondary on-site state and the actual driving off-site warning level state is the secondary off-site warning state, the control module is configured to control the electric forklift to be locked, control the electric forklift to be kept locked after the primary on-site state is acquired, and control the electric forklift to be restored when reset information of the electric forklift is detected and the portal height information is detected to fall below a preset height, wherein the preset height is a maximum height of the portal height information in the primary off-site warning state corresponding to the current load weight information.
3. The electric forklift control device according to claim 2, wherein when the control module determines that the in-place level state is the second-stage in-place state, the actual driving-away warning level state is the first-stage out-of-place warning state, and a time during which the control module does not acquire the first-stage in-place state is less than a preset time period, the control module is configured to control the electric forklift to function to hold; When the control module determines that the on-site level state is the secondary on-site state, the actual driving off-site warning level state is the primary off-site warning state, and the time when the control module does not acquire the primary on-site state exceeds a preset duration, the control module is used for controlling the electric forklift to be locked until the control module acquires the on-site level state and detects reset information of the electric forklift, and then controlling the electric forklift to be restored.
4. The electric fork-lift truck control device of claim 3, further comprising a prompt module in communication with the control module; When the control module determines that the on-site level state is the second-stage on-site state, the actual driving off-site warning level state is the first-stage off-site warning state, and the time when the control module does not acquire the first-stage on-site state exceeds a preset duration, the control module is further used for controlling the prompt module to send out first warning information, wherein the first warning information comprises return prompt information, operation handle operation prompt information and forklift gear operation prompt information; When the control module determines that the on-site level state is the secondary on-site state and the actual driving off-site warning level state is the secondary off-site warning state, the control module is further used for controlling the prompting module to send second warning information, and the second warning information comprises return prompting information, operation prompting information of an operation handle, operation prompting information of a forklift gear and portal height operation prompting information.
5. The electric fork-lift control device of claim 2, wherein the control module is configured to control the electric fork-lift function to remain when the control module determines that the on-site level state is the primary on-site state and does not enter the secondary on-site state, and the control module does not acquire the primary on-site state.
6. The electric forklift control device according to claim 2, wherein when the control module detects that the portal height information falls below a preset height and the electric forklift is in a non-traveling state, and the control module does not acquire the primary in-place state, the control module is configured to control the electric forklift to maintain a function, and the preset height is a maximum height of the portal height information in the primary out-of-position warning state corresponding to the current load weight information.
7. The electric forklift control device according to claim 1, wherein the control module is configured to determine that the actual driving-away warning level state is a primary-away warning state when the load weight information is smaller than a first load weight information duty ratio threshold value and/or the portal height information is smaller than a first portal height duty ratio threshold value, and determine that the actual driving-away warning level state is a secondary-away warning state when the load weight information is greater than or equal to the first load weight information duty ratio threshold value and the portal height information is greater than or equal to the first portal height duty ratio threshold value.
8. The electric fork-lift truck control apparatus of claim 1, wherein the control module is configured to determine the actual driving-away warning level state according to a correspondence between a preset load weight information duty ratio threshold, a portal height duty ratio threshold, and a reference driving-away warning level state.
9. The electric fork-lift control device of claim 1, wherein the in-situ information acquisition module includes a seat switch, a seat pressure sensor, an operating handle, a fork-lift gear, and a steering wheel encoder; The control module is respectively in communication connection with the seat switch, the seat pressure sensor, the operating handle, the forklift gear and the steering wheel encoder, and is used for determining that a first driver is in place according to the conducting state of the seat switch and the sensing value of the seat pressure sensor, and determining a second driver is in place according to the change information of the operating handle, the change information of the forklift gear and the rotation angle of the steering wheel encoder after confirming that the first driver is in place.
10. The electric fork-lift truck control device of claim 1, further comprising a power module electrically connected to the control module, the in-situ information acquisition module, the load weight acquisition module, and the mast height acquisition module for powering the control module, the in-situ information acquisition module, the load weight acquisition module, and the mast height acquisition module.

Description

Electric fork truck controlling means Technical Field The embodiment of the invention relates to the technical field of vehicle control, in particular to an electric forklift control device. Background The electric forklift is used as an indispensable carrying tool in the industrial field, has the capabilities of loading, unloading, stacking and short-distance transportation of finished pallet goods, and in the transportation process using the electric forklift, the off-site monitoring of operators is critical to the operation safety of the forklift. The traditional driver off-site monitoring method is characterized in that when a forklift is in a starting state, a timing module counts time, the working time of the forklift is recorded, the normal working time of each forklift driver is judged according to the number of steering wheel alignment, the number of automatic reset of a lifting handle, the number of automatic reset of a tilting handle or the number of automatic reset of a side-shifting handle, and information of normal working state or abnormal working state is displayed through a warning module. The above-mentioned driver's leaving alert scheme does not consider two factors of electric fork truck door frame height and load weight, has the problem that the driver in-place state judges inaccurately in the electric fork truck operation and influences the problem of operation safety. Disclosure of Invention The embodiment of the invention provides an electric forklift control device, which combines driving in-place information of a driver, load weight of an electric forklift and portal height, realizes judgment of in-place state of the driver in operation of the electric forklift and automatic control of the electric forklift, improves accuracy of driving in-place detection and ensures operation safety of the electric forklift. The electric forklift control device provided by the embodiment of the invention comprises an in-situ information acquisition module, a load weight acquisition module, a portal height acquisition module and a control module; The on-site information acquisition module is used for acquiring driving on-site information of a driver; the load weight acquisition module is used for acquiring load weight information of the electric forklift; The door frame height acquisition module is used for acquiring door frame height information of the electric forklift; The control module is respectively in communication connection with the on-site information acquisition module, the load weight acquisition module and the portal height acquisition module and is used for receiving the on-site driving information, the load weight information and the portal height information, determining an on-site grade state according to the on-site driving information, determining an actual driving off-site warning grade state according to the load weight information and the portal height information and carrying out grading control on the electric forklift according to the on-site grade state and the actual driving off-site warning grade state. Optionally, the on-bit level state includes a primary on-bit state and a secondary on-bit state; the actual driving leaving warning level state comprises a first-level leaving warning state and a second-level leaving warning state, wherein the load weight information corresponding to the second-level leaving warning state is greater than the load weight information corresponding to the first-level leaving warning state, and/or the portal height information corresponding to the second-level leaving warning state is greater than the portal height information corresponding to the first-level leaving warning state; When the control module determines that the in-place level state is a secondary in-place state and the actual driving leaving warning level state is a primary leaving warning state, the control module is used for controlling the electric forklift according to the leaving time of the driver; When the control module determines that the in-place level state is a secondary in-place state and the actual driving-away warning level state is a secondary away-from-place warning state, the control module is used for controlling the electric forklift to be locked, controlling the electric forklift to keep the locked state after the primary in-place state is acquired, and controlling the electric forklift to be restored when reset information of the electric forklift is detected and portal height information is detected to be lowered below a preset height, wherein the preset height is the maximum height of the portal height information in the primary away-from-place warning state corresponding to the current load weight information. Optionally, when the control module determines that the in-place level state is a secondary in-place state, the actual driving departure warning level state is a primary departure warning state, and the time that the control module does not acquir