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Jib pitch switching control method and control system

A control method and technology of a control system, which are applied in the field of boom pitch switching control method and control system, can solve the problem that the boom action cannot respond quickly, and achieve the improvement of responsiveness and maneuverability, reduction of response time, and rapid switching. Effect

Active Publication Date: 2022-04-15
SANY MARINE HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a jib pitch switching control method and control system to solve the technical problem that the jib movement cannot respond quickly when the jib drive stops immediately when it is lowered and immediately lifted

Method used

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  • Jib pitch switching control method and control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment provides a boom pitch switching control method, such as figure 1 shown, including the following steps:

[0042] S100. Obtain the lifting working condition of the pitch driving part used to support the jib, that is, determine the working state of the pitching driving part. The working state of the pitching driving part includes a lifting state, a lifting stop immediately descending state, a descending state, and a descending stop Immediate lift state;

[0043] S200. When the pitch drive part is in the state of descending, stopping and immediate lifting, obtain the required torque of the lift motor to balance the potential energy according to the pressure of the pitch drive part, even if the pitch drive part descends smoothly, the torque of the lift motor is the lift motor Output torque in torque mode;

[0044] S300. Increase the torque of the lifting motor to be greater than the required torque, so that the speed of the lifting motor decreases rapidly u...

Embodiment 2

[0051] The jib pitch switching control method in the second embodiment is an improvement on the basis of the first embodiment above, and the technical content disclosed in the first embodiment above will not be described repeatedly, and the content disclosed in the first embodiment above also belongs to the second embodiment public content.

[0052] This embodiment provides a boom pitch switching control method, such as figure 2 shown, including the following steps:

[0053] S100. Acquiring the lifting working condition of the pitch driving part used to support the jib, that is, judging the working state of the pitch driving part, including the lifting state, the lifting state, the descending state immediately after the lifting stop, the descending state, and the lifting state immediately after the descending stop;

[0054] S200. When the pitch drive part is in the state of descending, stopping and immediate lifting, obtain the required torque of the lift motor to balance th...

Embodiment 3

[0060] This embodiment provides a jib pitch switch control system, including a pitch cylinder, a drive pump, a lift motor, an auxiliary motor, and a controller; the drive pump is used to supply oil to the pitch cylinder to drive the drive end of the pitch cylinder to expand and contract , so as to drive the boom up or down; the lift motor and the auxiliary motor jointly drive the pump to work; the controller communicates with the lift motor and the auxiliary motor to control the work of the lift motor and the auxiliary motor, and the controller can Obtain the working condition of the pitching cylinder, and control the work of the lifting motor and the auxiliary motor according to the different working conditions of the pitching cylinder.

[0061] The boom pitch switching control system of this embodiment can realize the boom pitch switching control method of the first and second embodiments above, so it has all the beneficial effects of the first and second embodiments above. ...

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Abstract

The invention relates to the technical field of boom control of mechanical equipment, in particular to a boom pitch switching control method and a control system. The boom pitch switching control method increases the torque of the lifting motor to be greater than the required torque before the pitching drive part is in the state of descending, stopping and immediate lifting, before switching from the torque mode to the speed mode, so that the speed of the lifting motor decreases rapidly, and then the The lifting motor is switched to the speed mode to reduce the response time of the boom movement and improve the responsiveness and maneuverability of the boom. The boom pitch switch control system includes a pitch cylinder, a drive pump, a lifting motor and an auxiliary motor; when the pitching drive part is in the state of descending, stopping and immediate lifting, the torque of the lifting motor is increased to be greater than the required torque, so that the lifting The speed of the lifting motor decreases rapidly to reduce the response time of the boom movement, and the auxiliary motor and the lifting motor jointly drive the pump, thereby further realizing the rapid lifting of the pitch driving part and completing the rapid switching of the boom movement.

Description

technical field [0001] The present invention relates to the technical field of boom control of mechanical equipment, in particular to a boom pitch switching control method and a control system. Background technique [0002] In the prior art of construction machinery equipment such as cranes, when the drive of the boom stops immediately after falling, since the lifting motor is still in the torque mode at this time, it is necessary to return the speed to zero and then change the direction to increase the speed. The jib movement cannot respond quickly, and there is a response delay, which affects the handling. Contents of the invention [0003] The purpose of the present invention is to provide a jib pitch switching control method and control system to solve the technical problem that the jib action cannot respond quickly when the jib drive stops immediately after descending and immediately lifts. [0004] A boom pitch switching control method provided by the present applic...

Claims

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Application Information

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IPC IPC(8): B66C13/22B66C13/23B66C23/82
CPCB66C13/22B66C13/23B66C23/82
Inventor 于拯袁朋张理
Owner SANY MARINE HEAVY IND
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