KR-20260065345-A - INTERFERENCE PREVENTING CONTROL SYSTEM FOR CONSTRUCTION EQUIPMENT

KR20260065345AKR 20260065345 AKR20260065345 AKR 20260065345AKR-20260065345-A

Abstract

One aspect of the present disclosure is an interference prevention control system for a construction machine comprising an upper slewing body having a cap installed thereon and a working device supported by the upper slewing body and having a boom, an arm, and an attachment, the system comprising: a detection means for detecting the position of the attachment; a control lever for outputting a control signal corresponding to the direction and amount of operation of an operator; an input/output display for receiving an input signal for setting an interference prevention range including a front boundary limit and a top boundary limit for the cap and whether to execute an interference prevention function; and a controller for restricting the operation of the working device so that the attachment does not enter the interference prevention range based on the position of the attachment detected by the detection means and the interference prevention range set through the input/output display, wherein the controller, when at least a portion of the position of the attachment detected by the detection means is within the interference prevention range and is in front of the cap, and the direction of operation input by the control lever is an arm-out direction or an attachment-out direction, An interference prevention control system for a construction machine is provided, wherein a predetermined area in front of the above-mentioned cap is excluded from the interference prevention range, and an arm-out operation or an attachment-out operation is allowed in the predetermined area.

Inventors

양수민

Assignees

볼보 컨스트럭션 이큅먼트 에이비

Dates

Publication Date: 20260508
Application Date: 20241101

Claims (11)

An interference prevention control system for construction machinery comprising an upper slewing body with a cap installed, and a working device supported by the upper slewing body and having a boom, an arm, and an attachment, A detection means for detecting the position of the above attachment; An operating lever that outputs an operating signal corresponding to the operator's operating direction and amount; An input/output display that receives an input signal for determining whether to execute an interference prevention function and for setting an interference prevention range including a front boundary limit and a top boundary limit for the cap; and A controller that restricts the operation of the work device so that the attachment does not enter the interference prevention range based on the position of the attachment detected by the detection means and the interference prevention range set through the input/output display, and The above controller is an interference prevention control system for a construction machine, wherein, when the position of at least a portion of the attachment detected by the detection means is within the interference prevention range and is in front of the cap, and the operation direction input by the operation lever is an arm-out direction or an attachment-out direction, a predetermined area in front of the cap is excluded from the interference prevention range, and an arm-out operation or an attachment-out operation is allowed in the predetermined area.
In paragraph 1, The above input/output display is, An interference prevention control system for construction machinery, characterized by including a function setting unit that accepts input for enabling or disabling an interference prevention function.
In paragraph 1, The above input/output display is, An interference prevention control system for a construction machine, characterized by including a first front limit setting unit that accepts an input for setting a front boundary limit based on the current position of an attachment located at a desired point in front of the cap.
In paragraph 3, An interference prevention control system for construction machinery, characterized in that the above-mentioned front boundary limit is automatically set based on the point of the attachment closest to the front from a specific point on the front of the cap.
In paragraph 1, The above input/output display is, An interference prevention control system for construction machinery, characterized by including a second forward limit setting unit for setting a distance directly input by an operator as a front boundary limit.
In paragraph 1, The above input/output display is, An interference prevention control system for construction machinery, characterized by including a first upward limit setting unit that accepts an input for setting a top boundary limit based on the current position of an attachment located at a desired point above the cap.
In paragraph 6, An interference prevention control system for construction machinery, characterized in that the top boundary limit is automatically set based on the point of the attachment closest upward from a specific point on the upper surface of the cap.
In paragraph 1, The above input/output display is, An interference prevention control system for construction machinery, characterized by including a second upper limit setting unit for setting a distance directly input by an operator as a top boundary limit.
In paragraph 1, The above input/output display is, An interference prevention control system for a construction machine, characterized by including an image of the construction machine viewed from the side and a status display unit that displays the front boundary limit and the top boundary limit based on the image.
In paragraph 1, The above controller is, A front boundary limit that is actually controlled is determined by adding a preset first margin value to the front boundary limit set through the input/output display, and An interference prevention control system for construction machinery, characterized by determining the top boundary limit actually controlled by adding a preset second margin value to the top boundary limit set through the above input/output display.
In paragraph 1, The above controller, A point on the swing center of the upper pivot body is set as the origin, the front of the origin is set as the X-axis direction, and the upward direction is set as the Z-axis direction. A virtual linear line is established from the above origin to the point where the above front boundary limit and the above top boundary limit meet, and An interference prevention control system for a construction machine, characterized by setting the area where the coordinate value of the attachment is X>Z within the above interference prevention range as the above predetermined area that allows arm out operation or attachment out operation.

Description

Interference Prevention Control System for Construction Equipment The present disclosure relates to an interference prevention control system for construction machinery. In a particular aspect, the present disclosure relates to an interference prevention control system for construction machinery capable of preventing interference between the cab and the attachment, wherein the construction machinery comprises an upper slewing body having a cab and an attachment displaceably installed with respect to the upper slewing body. The present disclosure may be applicable to large vehicles such as trucks, buses, and construction equipment among other vehicle types. While the present disclosure may be described with respect to specific vehicles, the present disclosure is not limited to any specific vehicle. Construction machinery is known to perform work by pressurizing a fluid, sending the pressurized fluid to a hydraulic actuator, and having the hydraulic actuator obtain power from the pressurized fluid to operate a working device. For example, construction machinery such as an excavator is one such example. An excavator is a construction machine that performs various tasks at construction sites, such as excavation work to dig the ground, loading work to transport soil, excavation work to create foundations, crushing work to demolish buildings, leveling work to prepare the ground, and leveling work to level the ground. Such a construction machine may generally include a lower body that serves as the moving part of the equipment, an upper body that is swivelly mounted on the lower body, and a work device (boom, arm, and attachment) mounted at the front of the upper body to perform various tasks. A cab may be installed on the upper slewing body, and the cab may be provided with a driver's seat where an operator can sit and control the work device. Various control levers or pedals for operating or driving the work device may be provided in front of the driver's seat. Meanwhile, in construction machinery, working devices are sometimes operated from the front and above the cab. In this case, the construction machinery is equipped with an interference prevention system to prevent attachments (e.g., buckets) from coming into contact with (or colliding with) the cab during operation. For example, the interference prevention system virtually sets an interference zone between the outer surface of the cab and a position at a predetermined distance, and slows down the movement speed of an attachment approaching the cab to stop it so that it does not intrude into that interference zone. However, in certain situations, the attachment may end up within the interference area, such as when the interference prevention function is activated while the attachment is located within the interference area. In such cases, conventional interference prevention systems uniformly restrict the operation of the working device simply because the attachment is located within the interference area, even when there is no risk of the working device's movement interfering with the cap. Consequently, there was a problem in that the working device could not perform the corresponding operation unless the interference prevention function was deactivated. The example is explained in more detail below with reference to the attached drawings. FIG. 1 is a drawing illustrating a construction machine according to one aspect of the present disclosure. FIG. 2 is a configuration diagram of a boom floating control system for construction machinery according to one aspect of the present disclosure. FIG. 3 is a schematic diagram of an input/output display according to one aspect of the present disclosure. FIG. 4 is a drawing illustrating an example of an interference prevention range according to one aspect of the present disclosure. FIG. 5 (a) and (b) are schematic diagrams of a construction machine that performs an arm-out operation in front of a cap according to one aspect of the present disclosure and a construction machine that performs an arm-out operation above a cap, respectively. FIG. 6 is a drawing for illustrating a specific situation in which an attachment according to one aspect of the present disclosure is located within an interference prevention range. FIG. 7 is a drawing for illustrating an area that allows a specific operation of a working device within an interference prevention range according to one aspect of the present disclosure. The detailed description below provides information and examples of the disclosed technology with sufficient detail to enable those skilled in the art to practice the present disclosure. However, the present disclosure may be embodied in various different forms and is therefore not limited to the aspects described herein. Furthermore, in order to clearly illustrate the present disclosure in the drawings, parts unrelated to the description have been omitted, and similar parts throughout the specification have been give