KR20140124986A

KR20140124986A - Construction machinery

Info

Publication number: KR20140124986A
Application number: KR20130042207A
Authority: KR
Inventors: 정태섭
Original assignee: 두산인프라코어 주식회사
Priority date: 2013-04-17
Filing date: 2013-04-17
Publication date: 2014-10-28
Also published as: KR102037535B1

Abstract

An embodiment of the present invention relates to a construction machine including a hydraulic pump generating a flow rate, an arm operated by the flow rate, and an attachment coupled to the arm to perform an operation, The construction machine includes a quick clamp having a safety pin accommodating hole, which is mounted on one end of the arm and mutually couples the arm and the attachment so that they can be separated from each other, a safety pin detection sensor provided in the safety pin accommodating hole of the quick clamp, A safety pin inserted into the safety pin receiving hole, a valve for controlling whether the flow rate generated by the hydraulic pump is supplied, and a control unit for controlling the valve when the safety pin sensor senses the safety pin inserted in the safety pin receiving hole do.

Description

CONSTRUCTION MACHINERY

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction machine, and more particularly to a construction machine having a quick clamp for detachably coupling an arm and an attachment to each other.

Generally speaking, construction machinery is all machinery used in civil engineering or construction work. And the construction machine includes equipment necessary for construction and equipment for movement, and various kinds of attachments are combined according to the kind of work and need.

For example, an excavator, which is a type of construction machine, uses a quick clamp installed at one end of an arm to detach and attach various attachments such as a bucket for excavation, a breaker, a vibrator, and a hammer . Here, the quiclamp is a mechanical device for easily detachably coupling various kinds of attachments to the lower end of the arm.

However, there is a problem in that when the quick clamp is used to fasten or detach the attachment to the lower end of the arm, the construction machine is operated in a state where the quick clamp does not fully grip the attachment, causing an accident that the attachment falls.

An embodiment of the present invention provides a construction machine that prevents safety accidents and equipment damage in the process of attaching and detaching an attachment.

According to an embodiment of the present invention, a construction machine includes a hydraulic pump generating a flow rate, an arm operated by the flow rate, and an attachment coupled to the arm to perform an operation. The construction machine includes a quick clamp mounted on one end of the arm to couple the arm and the attachment so that they can be separated from each other and having a safety pin accommodating hole, a safety pin detection sensor provided in the safety pin accommodating hole of the quick clamp, A safety pin inserted into the safety pin receiving hole of the quick clamp, a valve for controlling whether the flow rate generated by the hydraulic pump is supplied, and a safety pin sensor for detecting the safety pin inserted into the safety pin receiving hole, And a control unit for controlling the control unit.

The safety pin includes a safety pin body and a target portion formed in an area of the safety pin body, and the safety pin detection sensor can sense a target portion of the safety pin.

According to the embodiments of the present invention, the construction machine can prevent safety accidents and equipment damage in the process of attaching and detaching the attachment.

1 is a perspective view illustrating a quick clamp of a construction machine according to an embodiment of the present invention.
2 is a configuration diagram of a construction machine according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

The drawings are schematic and illustrate that they are not drawn to scale. The relative dimensions and ratios of the parts in the figures are shown exaggerated or reduced in size for clarity and convenience in the figures, and any dimensions are merely illustrative and not restrictive. And to the same structure, element or component appearing in more than one drawing, the same reference numerals are used to denote similar features.

The embodiments of the present invention specifically illustrate ideal embodiments of the present invention. As a result, various variations of the illustration are expected. Thus, the embodiment is not limited to any particular form of the depicted area, but includes modifications of the form, for example, by manufacture.

Hereinafter, a construction machine 101 according to an embodiment of the present invention will be described with reference to Figs. 1 and 2. Fig.

The construction machine 101 according to an embodiment of the present invention may be, for example, an excavator. Therefore, although not shown, the construction machine 101 includes a hydraulic pump generating a flow rate, an arm operated by a flow rate supplied by the hydraulic pump, and an attachment coupled to the arm to perform various operations . In one embodiment of the invention, the hydraulic pump, the arm operated by the hydraulic pump, and the attachment may have a variety of structures known to those skilled in the art.

1 and 2, a construction machine 101 according to an embodiment of the present invention includes a quick clamp 100, a safety pin detection sensor 150, a safety pin 200, a valve 700, , And a control unit 500. [

The quick clamp 100 is installed at one end of the arm. The quick clamp 100 couples various attachments, such as a bucket, a breaker, a vibrator, and a hammer, so as to be separable from the arm. That is, the quick clamp 100 can easily attach and detach various kinds of attachments.

Further, in one embodiment of the present invention, the quick clamp 100 has a safety pin accommodating hole 121. [

The safety pin detection sensor 150 is installed in the safety pin receiving hole 121 of the quick clamp 100. The safety pin 200 can be inserted into the safety pin receiving hole 121 of the quick clamp 100. When the safety pin 200 is inserted into the safety pin storage hole 121, the safety pin detection sensor 150 senses it and generates a detection signal.

The safety pin 200 may include a safety pin body 210 and a target portion 250. And the safety pin detection sensor 150 can detect the target portion 250 of the safety pin 200. [

For example, the target portion 250 of the safety pin 200 may be made of a magnetic member or a reflective member. In addition, the safety pin detection sensor 150 may be a Hall sensor or an optical sensor.

However, the embodiment of the present invention is not limited to the above. As the safety pin detection sensor 150, various sensors known to those skilled in the art can be used.

The valve 700 controls whether or not the flow rate generated by the hydraulic pump is supplied. That is, when the valve 700 is opened, the operation of the construction machine 101 is stopped, and when the valve 700 is shut off, the construction machine 101 becomes operable. The valve 700 may be, for example, a cut off solenoid valve.

2, reference numeral 800 denotes an operating oil tank.

If the safety pin detection sensor 150 does not sense the safety pin 200, the control unit 500 controls the valve 700 to stop the operation of the construction machine 101. When the safety pin detection sensor 150 senses the safety pin 200 inserted into the safety pin receiving hole 121 and receives the generated sensing signal, the control unit 500 supplies the flow rate generated by the hydraulic pump through the valve 700 Thereby switching the construction machine 101 to an operable state.

In the embodiment of the present invention, it is possible to select whether or not the quick clamp 100 is mounted on the monitor and the control unit of the construction machine 101 so that the control unit 500 can be operated only when the quick clamp 100 is mounted. It can be adjusted to perform one control method.

Hereinafter, the operation principle of the construction machine 101 according to one embodiment of the present invention will be described in detail with reference to FIG.

The construction machine 101 can easily attach and detach the attachment using the quick clamp 100. [ However, when the construction machine 101 is operated in a state in which the quick clamp 100 does not fully grip the attachment when the attachment is coupled to or detached from the lower end of the arm using the quick clamp 100, Damage may occur.

The control unit 500 determines that the safety pin 200 is inserted into the safety pin receiving hole 121 of the quick clamp 100 only when the safety pin detection sensor 150 detects that the safety pin 200 is inserted into the safety pin receiving hole 121 of the construction machine 101 The safety can be improved during the replacement operation of the attachment.

As described above, the construction machine 101 according to the embodiment of the present invention can prevent safety accidents and equipment damage during the attachment and detachment of the attachment.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. will be.

It is therefore to be understood that the embodiments described above are to be considered in all respects only as illustrative and not restrictive, the scope of the invention being indicated by the appended claims, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

100: Quick clamp 101: Construction machine
121: Safety pin storage hole 150: Safety pin detection sensor
200: Safety pin 210: Safety pin body
250: target part 500: control part
700: Valve 800: Working oil tank

Claims

1. A construction machine comprising a hydraulic pump generating a flow rate, an arm operated by the flow rate, and an attachment coupled to the arm,
A quick clamp 100 mounted on one end of the arm to couple the arm and the attachment to each other in a detachable manner and having a safety pin receiving hole 121;
A safety pin detection sensor 150 installed in the safety pin receiving hole 121 of the quick clamp 100;
A safety pin 200 inserted into the safety pin receiving hole 121 of the quick clamp;
A valve 700 for controlling whether or not a flow rate generated by the hydraulic pump is supplied; And
When the safety pin detection sensor 150 senses the safety pin 200 inserted into the safety pin receiving hole 121, the controller 500 controls the valve 700,
A construction machine.

The method of claim 1,
The safety pin 200 includes a safety pin body 210 and a target portion 250 formed on one side of the safety pin body 210,
The safety pin detection sensor 150 senses a target portion 250 of the safety pin 200.