KR101488646B1 - A External Displacement Sensing Unit - Google Patents

Abstract

The present invention is to provide an external displacement sensing unit of a quick coupler to enable to sense a change in physical pressure generating in the selected environment, and to check the sensed pressure by transferring the change of the sensed pressure to a determined position. The external displacement sensing unit of the quick coupler comprises: a driver (3) applied with an elastic force by an elastomer (2) moving in accordance to the changed pressure applied externally; and a connector (4) connected to the driver (3) wherein the position of an end is moved in accordance to the positional movement of the driver (3). The external displacement sensing unit of the quick coupler is configured to sense the intensity of the pressure to be applied to the driver (3) by sensing the change in a moving distance by the pressure on one side of the driver (3).

Description

Description of the Related Art [0002] Quick Displacement Sensing Units [

The present invention relates to a quick coupler external displacement sensing device that senses a change in physical pressure generated in a selected environment and transmits a sensed change in pressure to a desired position to confirm a sensed pressure .

Generally, an excavator is one of the heavy equipment that performs the foundation work in construction and civil engineering work by driving the bucker with mechanical force.

Such an excavator is adapted to replace various types of working tools suitable for the purpose of the work, and is equipped with a structure that can be mounted and removed on an arm or a boom of an excavator.

2. Description of the Related Art In recent years, work devices have been easily connected through a quick coupler mounted separately on an arm or a boom of an excavator, thereby increasing work efficiency.

One of such quick couplers is disclosed in Korean Patent Registration No. 10-1410167 proposed by the applicant of the present invention. As in the prior art, by using pin holes formed on the front and back sides of the coupler body, And are coupled to the push link by pins.

In this quick coupler, a fixing hook and a movable type of flow hook are provided at a lower portion of the coupler body, and the front and rear pins of the working device are coupled to the fixing hook and the flow hook, respectively, It is installed firmly in the quick coupler.

Therefore, if the rear pin of the working device is hooked to the working hook by operating the cylinder after the front pin of the working device is hooked to the fixing hook of the quick coupler installed on the excavator side, the working device 180 can be easily mounted .

When the work device is removed from the quick coupler of the excavator, the work device can be easily removed from the quick coupler by operating in reverse to the above.

The quick coupler is provided with a safety device for preventing the work device from being torn off unintentionally. The safety device includes a fixing device for confirming the fixing state of the rear pin with respect to the flow hook, A state checking means is provided and the fixed state checking means is constituted by a non-operating state proximity sensor or a pneumatic back pressure type proximity sensor so as to detect the state where the back pin is fixed in the flow hook.

Therefore, when the rear pin is unauthorizedly detached from the flow hook, the user can confirm it and take appropriate measures.

However, in the quick coupler applied in the Korean Patent Registration No. 10-1410167 proposed by the applicant of the present invention as described above, the work environment in which the extreme vibration is present or the mud is in progress lowers the detection efficiency of various sensors There is a problem in that the efficiency is deteriorated because the environment is damaged as well as the environment.

That is, there has been a problem that a physical shock to the quick coupler occurs at the time of operation and that the sensor is broken or the operation is not properly performed due to inflow of various kinds of contaminated water.

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned problems of the prior art. An object of the present invention is to provide an apparatus and a method for operating the apparatus, The change of the sensed pressing force can be easily recognized at a desired position, so that it is useful not only in the quick coupler but also in various fields (for example, detection of a mechanical door lock of a car or a transportation apparatus, detection of a high-pressure high- The present invention provides a quick-coupler external displacement sensing device that can be used to detect an external displacement.

In order to achieve the above object, according to the present invention, there is provided an apparatus for detecting external displacement of a quick coupler, comprising: a driving body which is provided with an elastic force by an elastic body and moves in accordance with a change in a pressing force applied from outside; And a connecting body connected to the driving body so that the position of the terminal is moved according to the positional movement of the driving body; And detecting a state of the environment in which the driving body is located by detecting a positional shift of the end of the connecting body and confirming a displacement state of the driving body.

The actuating body is provided with an elastic force of an elastic body to move a tension of the connecting body between the connecting body and the driving body, .

In addition, the elastic body that applies the elastic force to the above-mentioned actuating body has an elastic force smaller than that of the elastic body that gives the elasticity to the driving body. This is because the driving body for sensing the external displacement and the connecting body for transmitting the sensed pressing force to a long distance are made of a flexible material such as steel wire or the like so that the displacement of the sensing portion can be transmitted to the terminal despite the complicated shape connection. The tensile force of the two elastic bodies is adjusted so that displacement is not lost even if the displacement due to the pressing force sensed by the driving body is transmitted through the complicated and curved cladding tube to a long distance.

The elastic body that applies the elastic force to the above-mentioned actuating body has an elastic force smaller than that of the elastic body that gives the elasticity to the above-mentioned driving body.

Shaped body which is fixed to a part of the quick coupler body and has both ends communicated with each other, and is configured to detect a change in a pressing force applied in one direction to detect a fixed state of the working device with respect to the quick coupler, A fixed cap which is fixed while closing one end of the main body and has a tube hole communicated at both ends thereof, a driving body having one end exposed to the outside and arranged to linearly move inside the main body, A sensing unit disposed between the fixed caps and including an elastic body adapted to press the driving body to the outside of the body; A connecting body connected to the driving body and including a connecting wire extending outwardly through the tube; An operation body which is connected to an end of the connection wire and moves according to the movement of the terminal of the connection wire, a cladding portion of a strong material such as a steel wire spring so that the connection body is not damaged by external impact, And a connecting cap having a communication hole communicated at both ends so as to be closed while closing an end of the base from which the connection wire is introduced, And an elastic body disposed between the actuating body and the coupling cap to press the actuating body to the outside of the body inside the body.

The quick-coupler external displacement sensing device of the present invention as described above can detect a change in the pressing force smoothly without causing breakage and drive error due to the working environment of the excavator in which impact and contaminated water remain, It is possible to easily recognize the fixed state of the coupler and the operating device at a desired position so as to prevent a safety accident in advance and to stably maintain the pressure (temperature) or the mechanical movement The state can be easily recognized from the outside, and thus it is advantageously used in various fields.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional view illustrating a quick coupler external displacement sensing apparatus according to an embodiment of the present invention; FIG.
FIG. 2 is an enlarged partial excerpt of an enlarged partial view of a quick coupler external displacement sensing device according to the present embodiment. FIG.
3 is a schematic view showing the use state of the quick coupler external displacement sensing apparatus according to the present embodiment.
FIG. 4 is an enlarged example of a part of an excerpt from an excerpt of the state of use of the quick coupler external displacement sensing device according to the present embodiment. FIG.
FIG. 5 is a schematic view showing the operating state of the quick-coupler external displacement sensing apparatus according to the present embodiment. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a quick coupler external displacement sensing apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention can be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more fully describe the present invention to those skilled in the art. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Detailed descriptions of well-known functions and constructions which may be unnecessarily obscured by the gist of the present invention are omitted.

1 to 5 are views showing a quick coupler external displacement sensing apparatus according to an embodiment of the present invention. The quick coupler external displacement sensing apparatus 1 according to the present embodiment includes a quick coupler 1 attached to an excavator, So that it is possible to prevent a safety accident from occurring by recognizing that the quick coupler 100 and the working device 180 are coupled and detecting that the quick coupler 100 is disassembled in real time.

3, the quick coupler 100 is mounted on the arm 130 of the excavator and the push link 140 using the pin holes 120 formed on the front and back sides of the coupler body 110. [ It is preferable that they have a structure in which they are respectively fastened and coupled by the pins 150. [

The quick coupler 100 is provided with a fixing hook 160 and a movable flow hook 170 at a lower portion of the coupler body 100 and includes a front pin 190 and a rear pin 200 are respectively engaged and fixed.

Therefore, when the front pin 190 of the working device 180 is fixed to the fixed hook 160 and the rear pin 200 is fixed to the flow hook 170 by operating the cylinder 210, (180) is mounted.

When the work device 180 is separated from the quick coupler 100, the cylinder 210 is driven in reverse and the flow link 170 is rotated from the rear pin 200 to separate it.

The quick coupler external displacement sensing device according to the present embodiment is particularly applied to sensing whether the flow hook and the rear pin are released from the fixed state by being disposed in the flow hook in the coupler body.

That is, the present invention is particularly adapted to prevent the flow link from rotating unauthorized and causing the rear fins to separate to cause a safety accident.

As shown in FIG. 1, the quick-coupler external displacement sensing device 1 according to the present embodiment is provided with an elastic force by the elastic body 2, and moves in accordance with a change in the pressing force applied from the outside And a connecting body 4 connected to the driving body 3 and adapted to move the position of the terminating end according to the positional movement of the driving body 3.

That is, at one side of the driving body 3, a change in the moving distance moved by an amount of the pressing force applied to the driving body 3 is sensed by a pressing force applied to the driving body 3, So as to detect the degree of the pressing force.

3 and 4, when the end portion of the driving body 3 is brought into close contact with the rear fin 200 in a state where the driving body 3 is disposed in the flow hook 170, The driving member 3 is moved to the maximum extent in the direction of the flow hook 170 by the pressing force of the rear pin 200 when the rear pin 200 is fixed to the flow hook 170, The pressing force applied to the driving body 3 is reduced and the elastic body 2 moves in the direction of the rear fin 200 while the rear fin 200 is separated from the rear fin 200. As a result, (3) is moved in the direction of the rear pin (200) by a maximum movement distance.

The moving position of the driving body 3 is transmitted to the connecting body 4 in real time so that the end of the connecting body 4 moves in the same direction as the moving direction and the moving distance of the driving body 3 So that the operator recognizes the end of the connecting member 4 and detects the moving state of the driving body 3. [

Therefore, the state of the driving body 3 is detected in real time and appropriate measures are taken to prevent a safety accident from occurring.

In this case, it is preferable that a separate device is connected to the end of the connector 4 so that the operator can easily recognize the terminal by applying various display methods.

As described above, the operator checks the positional shift of the end of the connecting body 4 at the position spaced apart from the quick coupler 100, confirms the displacement state of the driving body 3, It is possible to recognize the fixed state of the working device 180 in real time in a stable manner by detecting the state of the positioned environment.

In the quick coupler external displacement sensing device 1 according to the present embodiment having the above structure, an actuator (not shown) is provided at the end of the connector 4 so as to move according to the positional change of the terminal of the connector 4 5 are connected to the actuating body 5 and the actuating body 5 is urged by the resilient force of the elastic body 6 to maintain the tension of the connecting body 4 with the actuating body 3.

That is, since the connecting body 4 always maintains a constant tension by the operating body 5, the end of the connecting body 4 has the same mobility with respect to the movement of the driving body 3 So that reliable detection of a change in the position of the driving body 3 can be realized in real time.

It is preferable that the elastic body 6 that applies an elastic force to the actuating body 5 has an elastic force smaller than that of the elastic body 2 that applies an elastic force to the actuator body 3.

That is, it is most preferable that the elastic force applied to the actuating body 5 prevents the elastic force from being disassembled and the positional movement is stably performed by the pressing force applied to the actuating body 3, It is most preferable that the elastic force applied to the link member 4 is such that it acts to maintain the tension of the link member 4. [

The quick-coupler external displacement sensing device 1 according to the present embodiment as described above includes a main body 7 having a "pipe" shape fixed to a part of the quick coupler body 110 and having both ends communicated with each other, A fixed cap 8 which is fixed while closing one end of the main body 7 and has a tube communicated at both ends thereof, a driving body 3 which is disposed inside the main body 7 so that one end is exposed to the outside and is linearly moved, , An elastic body (2) arranged between the driving body (3) and the fixed cap (8) inside the body (7) and adapted to press the driving body (3) It is preferable to have the sensing unit 9 including the sensor.

That is, in a state in which the main body 7 is engaged with the flow hook 170 of the quick coupler 100, the driving body 3 is reciprocated within the main body 7 to change its position .

The connecting body 4 preferably includes a connecting wire connected to the driving body 3 and extending outwardly through the tube. The outer circumferential surface of the connecting wire is connected to the external impact Most preferably, it is covered by a cable tube of strong material.

It is preferable that the main body 7 has a sealing structure capable of securing waterproofness to the outside, and it is preferable to form a sealing structure mainly through an O-ring.

Accordingly, the waterproof structure is implemented in the state of the environment in which the main body 7 is disposed, thereby preventing breakage and operation errors.

The quick coupler external displacement sensing device 1 according to the present embodiment includes an operating body 5 that is connected to a terminal end of the connecting wire so as to move according to the movement of the terminal end of the connecting wire, (10) having an end connected to both ends so as to be closed while closing an end of the base (10) through which the connection wire is introduced, A coupling cap 11 having a hole and a coupling cap 11 interposed between the actuating body 5 and the coupling cap 11 inside the body 10 so that the actuating body 5 is connected to the outside of the body 10 It is preferable to have the detection portion 12 including the elastic body 6 adapted to be pressed by the elastic member 6.

That is, the state information of the driving body 3 can be confirmed in real time by recognizing the state of the actuating body 5 constituting the detection unit 12 at a position spaced apart from the sensing unit 9.

Hereinafter, the operation and effect of the quick-coupler external displacement sensing device according to the present embodiment will be described in detail.

When the working device is fixed to the quick coupler 100, when the flow hook 170 is rotated and fixed in the direction of the rear fin 200 through the cylinder 210, as shown in FIG. 5, The end of the driving body 3 exposed to the outside by the elastic body 2 in the main body 7 is pressed by the pressing force applied from the rear fin 200 and moved to the inside of the main body 7 ,

As described above, when the driving body 3 is moved in the lateral direction of the main body 7, the tension is released as the outer joint is moved in the same direction and distance, and according to the releasing tension of the connecting wire, The body 5 is moved to the outside of the base 10.

Therefore, when the operating state of the operating body 5 is recognized, the information on the moving body 3 can be checked in real time, so that the fixed state between the rear fin 200 and the flow hook 170 The user can recognize that the user is holding the data.

When the flow hook 170 is detached from the rear fin 200, the driving body 3 is moved toward the rear fin 200 by the elastic force of the elastic body 2, The end of the connecting wire is moved by pulling the wire and the operating body 5 connected to the connecting wire is moved by the moving distance of the driving body 3,

Accordingly, when the operating state of the operating body 5 is recognized, the information on the moving body 3 can be checked in real time, and the state in which the rear fin 200 is separated from the flow hook 170 By recognizing and taking appropriate measures, safety accidents are prevented.

As described above, the quick-coupler external displacement sensing apparatus according to the present embodiment detects a change in the pressing force with respect to the work environment through mechanical driving and easily recognizes a change in the sensed pressing force at a desired position As a characteristic of technical construction.

It will be apparent to those skilled in the art that various modifications and equivalent arrangements may be made therein without departing from the scope of the present invention as defined by the appended claims and their equivalents. . Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

1: sensing device 2, 6: elastic body
3: driving body 4: connecting body
5: Actuator 7: Body
8: fixed cap 9:
10: gas 11: coupling cap
12: Detector 100: Quick coupler
110: coupler body 120: pinhole
130: Excavator arm 140: Push link
150: pin 160: fixed hook
170: Flow hook 180: Working device
190: front pin 200: rear pin
210: cylinder

Claims (4)

And detects the change of the pressing force applied in one direction to detect the fixed state of the working device with respect to the quick coupler.
A fixed cap which is fixed to a part of the quick coupler body and has both ends connected to each other, a fixed cap which is fixed while closing one end of the main body and has a tube hole communicated at both ends, A sensing unit disposed between the driving body and the fixed cap and adapted to press the driving body to the outside of the body;
A connecting body connected to the driving body and including a connecting wire extending outwardly through the tube;
Shaped body having one end thereof communicated with the other end thereof so that one end of the connecting wire is exposed to the outside and the other end communicating with the other end of the connecting wire, A coupling cap having a communication hole communicated at both ends so as to be closed while closing an end of the base body through which the connection wire is introduced; and a coupling cap disposed between the actuating body and the coupling cap inside the base body, And a detecting unit including an elastic body adapted to be pressed to the outside of the quick coupler.
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