KR20100124540A - Attachment coupler for heavy machinery, ensuring a complete coupling with the attachment - Google Patents

Abstract

PURPOSE: An attachment coupler for heavy equipment which secures the complete mount of attachments is provided to prevent the separation of attachments using a fixed hook even in the fracture of a fluid pressure cylinder rod. CONSTITUTION: An attachment coupler for heavy equipment comprises a coupler body(20), a fixed hook(60), a moveable hook(40), a hydraulic cylinder(70), a locking hook member(110) and a force translation member. The fixed hook is fixed and coupled with the combining pins facing each other. The moveable hook is combined with the coupler body to rotate using a hinge shaft(50).

Description

Attachment coupler for heavy machinery, ensuring a complete coupling with the attachment}

The present invention relates to an attachment coupler for heavy equipment that guarantees complete attachment of an attachment, and more particularly, to an attachment by further comprising locking devices to more reliably fix a coupling pin of an attachment used in heavy equipment such as an excavator to the coupling groove of the coupler. The present invention relates to an attachment coupler for heavy machinery that can prevent the detachment of an attachment due to an accidental accident during the operation by ensuring that the attachment of the attachment can be easily confirmed by the driver.

The heavy equipment widely used in civil construction sites can be combined with various attachments according to the work needs. Excavators, which are representative construction heavy equipments, are used by detaching various attachments such as buckets, breakers, vibrators, and hammers using a coupler installed at the lower side of the excavator arm and the lower side of the link. A mechanism for coupling such attachment to the arm of heavy equipment is called a coupler, and the structure of a conventional heavy duty cost attachment coupler 1 is shown in FIGS. 1A and 1B.

Referring to FIG. 1A, the conventional attachment coupler 1 for heavy equipment has a structure in which a fixed hook 60 and a movable hook 40 are mounted on the coupler body 20, and two coupling pins of the attachment 30 ( Attachments 30 are coupled to coupler 1 by 30a and 30b being hooked to fixed hook 60 and movable hook 40 respectively. In addition, a hydraulic cylinder 70 operated by hydraulic pressure is installed between the body of the attachment coupler 1 and the movable hook 40 so that the movable hook 40 is extended and contracted by the hydraulic cylinder 70. Rotate (refer to the portion indicated by the solid line and the dotted line of the mobile hook 40 in FIG. 1). That is, the rod 90 of the hydraulic cylinder 70 is coupled to one side of the movable hook 40 by the first fixing pin 11, and the housing of the hydraulic cylinder 70 is connected by the second fixing pin 12. It is fixed to the body of the coupler (1), when the hydraulic cylinder 70 is extended, the movable hook 40 is in the position indicated by the solid line in Figure 1, the second coupling groove 160 of the movable hook 40 is attached It is coupled with the second coupling pin 30b of (30). On the contrary, when the hydraulic cylinder 70 contracts, the movable hook 40 is in the position indicated by the dotted line in FIG. 1 and the movable hook 40 is separated from the second coupling pin 30b. As a result, the attachment 30 is coupled to the coupler. Separated from (1).

In FIG. 1, reference numeral 150 denotes a first coupling groove of the fixing hook 60 coupled with the first coupling pin 30a of the attachment 30.

However, the conventional heavy equipment attachment coupler 1 as shown in FIG. 1 is a coupler when the hydraulic oil supplied to the hydraulic cylinder 70 is leaked or the hydraulic cylinder rod 90 is broken or the moving hook 40 is broken. There is a problem that the attachment 30 is separated from (1).

That is, when the hydraulic oil supplied to the hydraulic cylinder 70 leaks, the hydraulic cylinder 70 is contracted at a high speed, and when the hydraulic cylinder 70 is contracted, the second coupling pin 30b of the attachment 30 is restrained. There was a problem that the attachment 30 is separated from the coupler 1 while the restraining force of the movable hook 40 is released. In addition, even when the hydraulic cylinder rod 90 pushing the movable hook 40 is broken, the movable hook 40 retreats backward and restrains the second coupling pin 30b of the attachment 30. There was a problem that the attachment force 30 is separated from the coupler 1 by the restraining force of 40) being released.

Due to this problem, as shown in Figure 1b to install the manual safety pin 35 in the rear pivoting space of the movable hook 40, it is most often used without mounting such a manual safety pin 35 because it is inconvenient in the field. In addition, the manual safety pin 35 has a problem that the safety function does not function when the movable hook 40 is broken.

In addition to the risk of accidental accidents, it was pointed out that it is very difficult to confirm whether the attachment is fully mounted on the coupler during the work preparation process of the excavator.

Here, the term "completely mounts the attachment 30 with the attachment coupler 1" means the attachment 30 through the first coupling groove 150 of the fixed hook 60 integrally formed with the body of the coupler 1. The first coupling pin (30a) of the hydraulic cylinder extended by the hydraulic oil supplied from the excavator rotates the movable hook 40 about the hinge shaft (50) the second coupling groove of the hook (40) The second coupling pin 30b of the attachment 30 is mounted through the 160 so that the attachment 30 is not separated from the coupler 1.

However, in the actual work site, when the driver of the excavator mounts the attachment 30 with the attachment coupler (1) in the driver's seat, there is no way to check whether the attachment is properly performed properly, so that the attachment 30 may be detached due to incomplete mounting. There was a danger.

In order to solve the above problems, the present invention is provided with locking devices to more securely secure the coupling pin of the attachment used in heavy equipment such as excavators to the coupling groove of the coupler to ensure the complete mounting of the attachment at the same time It is an object of the present invention to provide an attachment coupler for heavy equipment that enables the driver to easily check the installation state, thereby preventing the attachment from being detached due to an accident during operation.

In addition, the present invention is sufficient to prevent the attachment from the coupler accidentally separated even in the event of an accident such as the hydraulic cylinder rod of the coupler is broken during the operation of heavy equipment, the moving hook is broken, or the oil pressure supplied to the oil leakage It is an object of the present invention to provide an attachment coupler for heavy equipment with the highest safety.

Attachment coupler for heavy equipment to ensure the complete mounting of the attachment provided by the present invention to achieve the above object, Coupler body 20 coupled to the end of the arm (arm) of the heavy-duty vehicle; A fixed hook 60 fixedly installed at the coupler body 20 and engaged with one of the coupling pins facing the attachment; The hinge shaft 50 formed on the coupler body 20 is rotatably coupled to the coupler body 20, and the remaining coupling other than the coupling pin coupled to the fixing hook 60 among the coupling pins of the attachment. A moving hook 40 engaged with the pin; One end is coupled to the moving hook 40 by the first fixing pin 11, the other end is coupled to the coupler body 20 by the second fixing pin 12, the movement by stretching / contracting A hydraulic cylinder 70 for rotating the hook 40; A locking hook member (110) rotatably coupled to the coupler body (20) by the second fixing pin (12) and having one end bent in a hook shape; And one end is supported where the position is changed according to the rotation operation of the movable hook 40, the other end is a force transmission member coupled to the other end of the locking hook member 110 by a third fixing pin (13); Includes, when the hydraulic cylinder 70 is extended, the movable hook 40 is rotated in the first rotation direction to be engaged with the coupling pin and the locking hook member 110 is opposite to the first rotation direction The hook-shaped end 111 approaches the fixed hook 60 by rotating in two rotational directions. When the hydraulic cylinder 70 is contracted, the movable hook 40 rotates in the second rotational direction and locks. Hook member 110 is characterized in that the hook-shaped end 111 is moved away from the fixed hook 60 by rotating in the first rotational direction.

In addition, the attachment coupler for heavy equipment to ensure the complete mounting of the attachment provided by the present invention to achieve the above object, Coupler body 20 coupled to the end of the arm (arm) of the heavy-duty vehicle; A fixed hook 60 fixedly installed at the coupler body 20 and engaged with one of the coupling pins facing the attachment; Is coupled to the coupler body 20 by the hinge shaft 50 formed on the coupler body 20 is rotatably coupled, other than the coupling pin coupled to the fixing hook 60 of the coupling pins of the attachment A moving hook 40 engaged with the pin; One end is coupled to the moving hook 40 by the first fixing pin 11, and the other end is coupled to the coupler body 20 by the second fixing pin 12, thereby extending / contracting the A hydraulic cylinder 70 for rotating the movable hook 40; A second release link (210) rotatably coupled to the coupler body (20) by the second fixing pin (12) and including a long hole portion (211) in the form of a through groove at one end; One end is supported where the position is variable according to the rotation operation of the movable hook 40, the other end is a force transmission member coupled to the other end of the second release link 210 by a third fixing pin (13); And a long hole 211 of the second release link 210, which is rotatably coupled to the coupler body 20 at a position adjacent to the fixing hook 60, by a fifth fixing pin 15. It is coupled to, and the other portion includes a locking device (115) having a locking projection (115a), and when the hydraulic cylinder 70 is extended, the movable hook (40) for engaging with the coupling pin Rotating in one rotational direction and the second release link 210 is rotated in a second rotational direction opposite to the first rotational direction and the locking projection portion (by rotating in the first rotational direction of the locking device 115 ( 115a) approaches the fixed hook 60, and when the hydraulic cylinder 70 is contracted, the movable hook 40 rotates in the second rotation direction and the second release link 210 rotates the first rotation. Direction of rotation and the locking projection 115a by the rotation of the locking device 115 in the second rotation direction. It characterized in that apart from the said fixed hook (60).

Attachment attachment for heavy equipment to ensure the complete mounting of the attachment according to the present invention, the attachment from the coupler due to accidents such as breakage of the rod of the hydraulic cylinder of the coupler during the operation of heavy equipment such as excavators or breakage of the moving hook or leakage of hydraulic oil supplied There is an effect that can prevent the accidental separation.

In addition, the attachment coupler for heavy equipment according to the present invention, the lock hook member 110 or the locking device 115 is protruded into the first coupling groove 150 when the attachment is mounted, so that even when the driver is sitting in the driver's seat The protruding of the hook member 110 or the locking device 115 can confirm whether the attachment is properly mounted, thereby preventing the attachment from being detached from the coupler due to the incomplete mounting of the conventional attachment. have.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and effect of the attachment coupler for heavy equipment to ensure the complete mounting of the attachment according to the present invention.

2 to 4 are cross-sectional configuration diagrams of the attachment coupler 10 for heavy equipment to ensure the complete mounting of the attachment according to the first embodiment of the present invention.

Referring to Figure 2, the attachment coupler 10 according to the first embodiment of the present invention has a coupler body 20, the fixed hook 60 and the movable hook 40 in the lower portion of the coupler body 20 They are spaced apart from each other with a predetermined interval therebetween. The fixed hook 60 is configured integrally with the coupler body 20, the movable hook 40 rotates around the hinge shaft 50, the hydraulic cylinder 70 for rotating the movable hook 40 Is installed.

The hydraulic cylinder 70 is composed of a cylinder housing 80 and a cylinder rod 90, the cylinder housing 80 is fixed to one side of the movable hook 40 by the first fixing pin 11, The cylinder rod 90 is fixed to the coupler body 20 by the second fixing pin 12. In addition, the hydraulic cylinder 70 serves to rotate the movable hook 40 counterclockwise or clockwise by being stretched or contracted by pressure oil supplied from an excavator.

2 to 4, the attachment coupler 10 for heavy equipment according to the first embodiment of the present invention is compared between the movable hook 40 and the fixed hook 60 in comparison with the prior art of FIGS. 1A and 1B. There is a big difference in that the first release link 100 and the locking hook member 110 is additionally installed to perform a double locking function for the fixed hook 60. That is, the first release link 100 and the locking hook member 110 are installed between the movable hook 40 and the fixed hook 60 in overlapping with the hydraulic cylinder 70, thereby performing a double locking function. What is possible is that there is a feature of the present invention.

2 is a cross-sectional view showing a state in which the hydraulic cylinder 70 is contracted by the pressure oil supplied from the excavator, Figure 3 is a cross-sectional view showing a state in which the hydraulic cylinder 70 is extended.

In FIG. 2, one end of the first release link 100 is coupled to the movable hook 40 together with the cylinder housing 80 of the hydraulic cylinder 70 by the first fixing pin 11, and the first release link 100. The other end of the link 100 is coupled to one end of the locking hook member 110 by a third fixing pin 13. The lock hook member 110 having one end bent in a hook shape is coupled to the coupler body 20 together with the cylinder rod 90 by the second fixing pin 12.

One end of the first release link 100 is coupled to the hook 40 by the first fixing pin 11, and the other end of the first release link 100 is connected to the locking hook member 110 and the third fixing pin 13. Due to the coupling, the locking hook member 110 rotates in the clockwise / counter-clockwise direction, respectively, during the extension / retraction operation of the hydraulic cylinder 70, in cooperation with the fixed hook 60 to form the first coupling pin 30a. Unlocks or unlocks a role. In particular, since the hook-shaped end 111 is always in a down state due to its own weight (see FIGS. 3 and 4), the locking hook member 110 is always in the locked position without the unlocking function.

In more detail, the hydraulic cylinder 70 repeats contraction and extension in the operating state of the coupler 10 in a general situation. First, in the situation where the hydraulic cylinder 70 is contracted as shown in FIG. 40 rotates about the hinge shaft 50 in the direction of releasing the second coupling pin 30b (ie, clockwise in FIG. 2), so that the first release link 100 is connected to the locking hook. Pushing the member 110 to the right, the locking hook member 110 is rotated counterclockwise around the second fixing pin (12). As a result, when the hydraulic cylinder 70 contracts, the hook-shaped end 111 of the locking hook member 110 is raised to move away from the fixing hook 60 so that the first coupling groove 150 of the fixing hook 60 is closed. Will be opened.

On the contrary, in the situation where the hydraulic cylinder 70 is extended as shown in FIG. 3, the moving hook 40 fastens the second coupling pin 30b about the hinge shaft 50 (that is, FIG. 3). In the counterclockwise direction), whereby the first locking link 100 pulls the locking hook member 110 to the left, and the locking hook member 110 is locked by its own locking position 151. As a result, the locking hook member 110 is rotated clockwise around the second fixing pin 12 to lock the fixing hook (60).

That is, when the hydraulic cylinder 70 is extended, the hook type end 111 of the lock hook member 110 is mounted at the same time as the coupling pin 30b of the attachment is mounted through the second coupling groove 160 of the movable hook 40. ) Moves to the locking position 151 to perform a double locking role so that the first coupling pin 30a of the attachment 30 is not separated from the fixing hook 60.

In more detail, the hook hook end 110 has a hook-type end 111 because the hook-shaped end 111 is larger in a state rotatably installed about the second fixing pin 12. The fixed hook 60 is constantly locked by the self-weight of 111, whereby the locking hook member 110 causes the first hooking pin 30a to be fixed to the fixed hook 60. On the other side of the bondage. Therefore, even when the hydraulic oil leakage of the hydraulic cylinder 70 or the breakage of the hydraulic cylinder rod or the breakage of the movable hook 40 occurs, the hook-shaped end 111 of the locking hook member 110 is caused by its own weight. Since the coupling pin 30a is blocked, even when the first coupling pin 30a tries to escape from the fixing hook 60, the locking hook member 110 is not opened to prevent the first coupling pin 30a from being separated. Done.

Thus, in the present invention, the locking means composed of the first release link 100 and the locking hook member 110, the hydraulic oil supplied to the hydraulic cylinder 70 is leaked or the hydraulic cylinder rod 90 is broken or moving hook 40 ) Is broken and the second locking pin 30b of the attachment 30 is detached from the second coupling groove 160 of the mobile hook 40, the locking hook member 110 is moved to the first position at the locking position 151. Protruding to narrow the inlet of the coupling groove 150 serves to prevent the first coupling pin 30a of the attachment from being separated from the fixing hook 60.

In addition, in the present invention, even if an accident such as oil leakage of the hydraulic cylinder 70 or breakage of the hydraulic cylinder rod 90, breakage of the movable hook 40, the locking hook member 110 is already locked ( Since it is located at 151, the first coupling pin 30a is not separated from the fixed hook 60.

On the other hand, when the attachment coupler 10 of the present invention is attached to the attachment 30, the locking hook member 110 is protruded into the first coupling groove 150 of the fixed hook 60, the driver sitting in the driver's seat Also in this view that the locking hook member 110 is projected there is an advantage that can be easily confirmed that the attachment 30 is correctly fully mounted. That is, the driver can easily check whether the attachment is completely mounted by visually observing the lock hook member 110, thereby preventing an accident in which the attachment is separated during the operation due to the incomplete attachment.

In the first embodiment of the present invention, the first release link 100 and the hydraulic cylinder housing 80 together with the first fixing pin 11 on one side of the moving hook 40 for design and fabrication convenience. It was assumed to be fixed. However, the first release link 100 and the hydraulic cylinder housing 80 are not necessarily coupled to the moving hook 40 at the same time by a common fixing pin. It can also be combined.

In addition, in the first embodiment of the present invention, the locking hook member 110 is coupled to the coupler body 20 together with the cylinder rod 90 by the second fixing pin 12 for simplicity in design and manufacture. However, unlike this, the locking hook member 110 and the cylinder rod 90 may be separately fixed at positions spaced apart from each other with separate fixing pins.

Other embodiments of the present invention, which will be described below with reference to FIGS. 5 to 19, are basically the same as those of the first embodiment, and thus, detailed descriptions of the same elements will be omitted and the differences will be mainly given. Explain.

Fig. 5 is a sectional view of the attachment coupler 10a for heavy equipment according to the second embodiment of the present invention, showing a state in which the hydraulic cylinder 70 is retracted by pressure oil supplied from an excavator.

Referring to FIG. 5, the second embodiment of the present invention is the first embodiment described above in that the first release link 100 is connected to the hydraulic cylinder housing 80 instead of the moving hook 40. 2 to 4). Here, the first release link 100 is rotatably fixed to the cylinder housing 80 by the fourth fixing pin 14.

6 is a cross-sectional view of the attachment coupler 10b for heavy equipment according to the third embodiment of the present invention. Referring to FIG. 6, in the third embodiment of the present invention, a method of connecting the movable hook 40 and the locking hook member 110 is not the first release link 100 (see FIGS. 2 to 6), but the auxiliary auxiliary for release. There is a difference in that it is a hydraulic cylinder (170). The release auxiliary hydraulic cylinder 170 is supplied with pressure oil such that the cylinder is contracted in the lock mode, and pressure oil is supplied such that the cylinder is extended in the release mode.

When the movable hook 40 and the locking hook member 110 are connected to each other by using the release auxiliary hydraulic cylinder 170 as shown in FIG. 6, the movable hook 40 is damaged, oil leakage, breakage of the cylinder rod, and the like. Even if it rotates in a direction (clockwise in FIG. 6) that is separated from the second coupling pin 30b due to the cause, the rotation of the movable hook 40 is locked while the release auxiliary hydraulic cylinder 170 is contracted. Is not delivered). In order to release the lock hook member 110, it is possible to supply pressure oil so that the release auxiliary hydraulic cylinder 170 is extended. According to the third embodiment of the present invention, the mechanism using the hydraulic cylinder has an effect of preventing the entire attachment 30 from being separated from the coupler 10b even when an accident in which the mobile hook 40 is detached occurs. have.

Fig. 7 is a sectional view of the attachment coupler 10c for heavy equipment according to the fourth embodiment of the present invention, showing a state in which the hydraulic cylinder 70 is retracted by pressure oil supplied from an excavator.

Referring to FIG. 7, the fourth embodiment of the present invention is similar to the second embodiment of the present invention, and applies the same concept to the third embodiment, and moves one end of the release auxiliary hydraulic cylinder 170 to the movable hook 40. ), Instead connected to the cylinder housing 80 of the hydraulic cylinder 70. Similar to the attachment coupler 10b of the third embodiment, the attachment coupler 10c according to the fourth embodiment of the present invention releases the locking hook member 110 only when pressure oil is supplied so that the release auxiliary hydraulic cylinder 170 is extended. Therefore, even if an accident occurs in which the mobile hook 40 rotates in the direction of releasing engagement with the second coupling pin 30b, the lock hook member 110 continues to lock the fixed hook 60. There is an advantage to continue.

Meanwhile, in the embodiments illustrated in FIGS. 2 to 7, the first release link 100 and the release auxiliary hydraulic cylinder 170 serve to transmit the rotation of the movable hook 40 to the lock hook member 110. Therefore, if the overall concept is used, it can be expressed as "force transmission member". Therefore, in the embodiments of the present invention, the first release link 100 and the release auxiliary hydraulic cylinder 170 may be selectively used to achieve the purpose of transmitting the rotation of the movable hook 40 to the lock hook member 110. The possible components are:

Fig. 8 is a sectional view of the attachment coupler 10d for heavy equipment according to the fifth embodiment of the present invention, which shows a state in which the hydraulic cylinder 70 is shrunk by pressure oil supplied from an excavator.

Referring to FIG. 8, one end of the first release link 100 is connected to the moving hook 40 by the first fixing pin 11, and the other end to which the long hole 180 of the through groove shape is applied is fixed to the third. The pin 13 is connected to the locking hook member 110. Here, the through hole-shaped long hole 180 has a lock hook member after the hook is further released (rotated) by the allowance of the long hole even when the movable hook 40 moves to the released state while the attachment 30 is mounted. Since the 110 moves, there is an advantage that can serve as a more stable double locking device.

Fig. 9 is a sectional view of the attachment coupler 10e for heavy equipment according to the sixth embodiment of the present invention, which shows a state in which the hydraulic cylinder 70 is shrunk by pressure oil supplied from an excavator.

9, in the attachment coupler 10e according to the sixth embodiment of the present invention, one end of the first release link 100 is connected to the hydraulic cylinder housing 80 by a fourth fixing pin 14, The other end of the through-hole-shaped slot 180 is applied, it is connected to the locking hook member 110 by a third fixing pin (13).

Fig. 10 is a sectional view of the attachment coupler 10f for heavy equipment according to the seventh embodiment of the present invention, showing a state in which the hydraulic cylinder 70 is contracted by the pressure oil supplied from the excavator.

Referring to FIG. 10, the locking hook member 110 is coupled to the coupler body 20 by a second fixing pin 12, and a torsion coil spring 190 is mounted on the second fixing pin 12. One end of the torsion coil spring 190 is supported by the fixing pin 12, and the other end thereof is supported by the locking hook member 110, so that the locking hook member 110 is locked to the locking position 151. Exert elastic force to go to Therefore, even if the attachment coupler 10f according to the seventh embodiment of the present invention rotates in the direction in which the moving hook 40 is separated from the second catching pin 30b, the attachment coupler 10f is operated by the elastic force of the torsion coil spring 190. Since the locking hook member 110 can be continuously maintained at the locking position 151, there is an advantage of preventing the detachment of the attachment due to an accident.

FIG. 11 is a sectional view of the attachment coupler 10g for heavy equipment according to the eighth embodiment of the present invention, in which a leaf spring 200 is installed in place of the torsion coil spring 190 of FIG.

Referring to FIG. 11, the attachment coupler 10g according to the eighth embodiment of the present invention is installed at a position where the leaf spring 200 exerting elastic force comes into contact with the lock hook member 110. One end of the leaf spring 200 is fixed to the coupler body 20, and the other end of the leaf spring 200 is supported by contact with the lock hook member 110 so that the lock hook member 110 is always rotated in the direction of the arrow by an elastic force. To force. Therefore, in the case of the eighth embodiment, even if the moving hook 40 is rotated in the direction of separation from the second coupling pin 30b, the locking hook member 110 is continuously locked by the elastic force of the leaf spring 200. 151 can be maintained.

Fig. 12 is a sectional view of the attachment coupler 10h for heavy equipment according to the ninth embodiment of the present invention, which shows a state in which the hydraulic cylinder 70 is retracted by pressure oil supplied from an excavator. In the ninth embodiment shown in Fig. 12, the second release link 210 and the locking device instead of the locking hook member 110 (Fig. 2-Fig. 5) are compared with the first embodiment described above (Fig. 2-Fig. 5). There is a difference in that 115 is applied.

In the ninth embodiment of the present invention, the second release link 210 is rotatably coupled to the coupler body 20 by the second fixing pin 12, one end of which is connected by the third fixing pin 13. It is coupled to the first release link 100, the other end is coupled to one end of the locking device 115 via the long hole portion 211 in the form of a through groove. The locking device 115 generally has a heart shape and is rotatably fixed to the coupler body 20 by a sixth fixing pin 16. Since the heart-shaped lock device 115 is installed at a position adjacent to the fixing hook 60, when the lock protrusion 115 is rotated to the dotted line in FIG. 12, the locking protrusion 115a at the other end thereof is the first of the fixing hook 60. The locking groove 150 is locked. That is, in the ninth embodiment of the present invention, the heart-shaped locking device 115 performs a double locking function for the fixed hook (60).

In FIG. 12, since the long hole 211, which is the other end of the second release link 210, is connected to the heart-shaped locking device 115 by the fifth fixing pin 15, the second release link 210 is connected to the second release link 210. When rotating about the fixing pin 12, the rotational movement is transmitted to the locking device 115. That is, when the hydraulic cylinder 70 is contracted, the first release link 100 pushes the third fixing pin 13 so that the second release link 210 rotates counterclockwise around the second fixing pin 12. As a result, the locking device 115 rotates clockwise to open the first coupling groove 150 of the fixed hook 60.

On the contrary, when the hydraulic cylinder 70 is extended, the first release link 100 pulls the third fixing pin 13 so that the second release link 210 rotates clockwise around the second fixing pin 12. As a result, the locking device 115 rotates in the counterclockwise direction so as to double lock the first coupling groove 150 of the fixed hook 60.

Fig. 13 is a sectional view of the attachment coupler 10i for heavy equipment according to the tenth embodiment of the present invention, in which the hydraulic cylinder 70 is shrunk by pressure oil supplied from an excavator. The tenth embodiment of FIG. 13 corresponds to the second embodiment (FIG. 6) described above in the same context as the ninth embodiment, and the first release link 100 is connected to the movable hook 40. FIG. It is not fixed but instead is fixed on the hydraulic cylinder housing 80. Since the operation and effect of the attachment coupler 10i according to the tenth embodiment is similar to those of the ninth and second embodiments described above, further detailed description thereof will be omitted.

Fig. 14 is a sectional view of the attachment coupler 10j for heavy equipment according to the eleventh embodiment of the present invention, in which the hydraulic cylinder 70 is shrunk by pressure oil supplied from an excavator.

Referring to FIG. 14, the attachment coupler 10j according to the eleventh embodiment of the present invention corresponds to the above-described third embodiment (FIG. 6), and is moved by the first release link 100 (see FIG. 12). Rather than connecting the hook 40 and the second release link 210, the movable hook 40 and the second release link 210 are connected by the release auxiliary hydraulic cylinder 170.

Fig. 15 is a sectional view of the attachment coupler 10k for heavy equipment according to the twelfth embodiment of the present invention, in which the hydraulic cylinder 70 is shrunk by pressure oil supplied from an excavator.

Referring to Figure 15, the attachment coupler (10k) according to the twelfth embodiment of the present invention corresponds to the fourth embodiment (Fig. 7), the hydraulic cylinder by the first release link (100, Fig. 13) Rather than connecting the housing 80 and the second release link 210, the hydraulic cylinder housing 80 and the second release link 210 is characterized by the auxiliary hydraulic cylinder 170 for release.

Fig. 16 is a sectional view of the attachment coupler 10m for heavy equipment according to the thirteenth embodiment of the present invention, showing a state in which the hydraulic cylinder 70 is retracted by pressure oil supplied from an excavator.

Referring to FIG. 16, one end of the first release link 100 is formed with a through hole-shaped long hole 181, and the first fixing pin 11 is inserted into and coupled to the long hole 181 of one end thereof. The first release link 100 is fixed to one side of the movable hook 40. On the other hand, the other end of the first release link 100 is assembled with the second release link 210 by a third fixing pin 13, the second release link 210 is a second fixing pin 12 Rotating to the center, the long hole 212 provided at the other end of the second release link 210 is connected to the locking device 115 by the fifth fixing pin (15). When the hydraulic cylinder 70 extends, the first fixing pin 11 of the movable hook 40 pulls the first release link 100 through the long hole groove 181, and the second release link 210 The clockwise rotation around the fixing pin 12, the locking device 115 is rotated counterclockwise to move the locking projection 115a to the position to lock the fixed hook (60).

Fig. 17 is a sectional view of the attachment coupler 10n for heavy equipment according to the fourteenth embodiment of the present invention, showing a state in which the hydraulic cylinder 70 is retracted by pressure oil supplied from an excavator.

Referring to FIG. 17, in the attachment coupler 10n according to the fourteenth embodiment of the present invention, the long hole 180 of the first release link 100 is connected to the housing 80 of the hydraulic cylinder by the fourth fixing pin 14. Is the same as in the thirteenth embodiment (Fig. 16) except that

Fig. 18 is a sectional view of the attachment coupler 10p for heavy equipment according to the fifteenth embodiment of the present invention, showing a state in which the hydraulic cylinder 70 is retracted by pressure oil supplied from an excavator. The fifteenth embodiment of the present invention of FIG. 18 corresponds to the seventh embodiment (FIG. 10) described above, wherein a torsion coil spring 191 is installed on the sixth fixing pin 16 of the locking device 115 and the The locking device 115 exerts an elastic force so that it always faces the locked position. One end of the torsion coil spring 191 is supported by the sixth fixing pin 16 and the other end thereof is supported by the locking device 115 to push the locking device 115 in the direction of the arrow. As described above, in the fifteenth embodiment of the present invention, the torsion coil spring 191 is used as the locking aid in the locking device 115 to prevent the attachment from being accidentally separated from the coupler.

Fig. 19 is a sectional view of the attachment coupler 10q for heavy equipment according to the sixteenth embodiment of the present invention, showing that the leaf spring 200 is used as an auxiliary device different from the torsion coil spring 191 of Fig. 18. Since the leaf spring 200 has one end fixed to the coupler body 20 and the other end is in contact with the second release link 210, the leaf spring 200 exerts an elastic force that pushes the second release link 210 downward. . By the action of the elastic force of the leaf spring 200, the locking device 115 is always forced to move in the direction of the arrow.

The attachment coupler 10q for heavy equipment according to the sixteenth embodiment of the present invention adopts a leaf spring exerting elastic force as a locking aid, even if the movable hook 40 rotates in a direction to be separated from the second coupling pin 30b. The locking device 115 can be maintained at the locking position 151 with respect to the fixed hook 60. As a result, even if an accident such as a breakdown of the hydraulic cylinder rod or leakage of hydraulic oil occurs, the attachment is removed from the coupler. It can prevent the accidental separation.

The present invention has presented a total of 16 embodiments with respect to the attachment coupler for heavy equipment to ensure the complete mounting of the attachment, the present invention is provided with additional locking means capable of exerting this heavy locking function for the fixed hook, the hydraulic pressure of the coupler Even if the cylinder is broken in the rod, the moving hook is broken, or the oil is leaked, there is an advantage of preventing the attachment from being accidentally separated from the coupler.

In addition, the attachment coupler for heavy equipment according to the present invention, the lock hook member or the locking device protrudes out of the coupling groove of the fixed hook when the attachment is mounted, the driver can easily determine whether the attachment is completely mounted by visually confirming it. There is an advantage in that it can ensure a complete and secure coupling of the attachment.

1A and 1B are sectional views showing the structure of a conventional attachment coupler 1 for heavy equipment.

2 to 4 are cross-sectional configuration diagrams of the attachment coupler 10 for heavy equipment to ensure the complete mounting of the attachment according to the first embodiment of the present invention.

5 is a cross-sectional view of the attachment coupler 10a for heavy equipment according to the second embodiment of the present invention.

6 is a cross-sectional view of the attachment coupler 10b for heavy equipment according to the third embodiment of the present invention.

7 is a cross-sectional view of the attachment coupler 10c for heavy equipment according to the fourth embodiment of the present invention.

Fig. 8 is a cross sectional view of the attachment coupler 10d for heavy equipment according to the fifth embodiment of the present invention.

9 is a cross-sectional view of the attachment coupler 10e for heavy equipment according to the sixth embodiment of the present invention.

Fig. 10 is a cross-sectional view of the attachment coupler 10f for heavy equipment according to the seventh embodiment of the present invention.

Fig. 11 is a cross sectional view of the attachment coupler 10g for heavy equipment according to the eighth embodiment of the present invention.

12 is a cross-sectional view of the attachment coupler 10h for heavy equipment according to the ninth embodiment of the present invention.

Fig. 13 is a sectional view showing the construction of the attachment coupler 10i for heavy equipment according to the tenth embodiment of the present invention.

14 is a cross-sectional view of the attachment coupler 10j for heavy equipment according to the eleventh embodiment of the present invention.

Fig. 15 is a sectional view showing the construction of the attachment coupler 10k for heavy equipment according to the twelfth embodiment of the present invention.

Fig. 16 is a cross sectional view showing the attachment coupler 10m for heavy equipment according to the thirteenth embodiment of the present invention.

Fig. 17 is a cross sectional view showing the attachment coupler 10n for heavy equipment according to the fourteenth embodiment of the present invention.

Fig. 18 is a cross sectional view showing the attachment coupler 10p for heavy equipment according to the fifteenth embodiment of the present invention.

Fig. 19 is a sectional view showing the construction of an attachment coupler 10q for heavy equipment according to the sixteenth embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

1, 10, 10a, 10b, .., 10q: attachment coupler

11: first locking pin 12: second locking pin

13: 3rd locking pin 14: 4th locking pin

15: 5th fixed pin 16: 6th fixed pin

30: attachment 30a: first coupling pin

20: coupler body 30b: second coupling pin

35: Manual safety pin 40: Transfer hook

50: hinge axis 60: fixed hook

70: hydraulic cylinder 80: cylinder housing

90: hydraulic cylinder rod 100: first release link

110: locking hook member 111: hook type end

115: locking device 115a: locking projection

150: first coupling groove 151: locking position

160: the second coupling groove 170: release auxiliary hydraulic cylinder

180, 181: long hole 190, 191: torsion coil spring

200: leaf spring 210: second release link

211 and 212

Claims (15)

An attachment coupler for coupling an attachment for a heavy equipment to an end of an arm of a heavy equipment vehicle, A coupler body 20 coupled to an end of an arm of the heavy duty vehicle; A fixed hook 60 fixedly installed at the coupler body 20 and engaged with one of the coupling pins facing the attachment; Is coupled to the coupler body 20 by the hinge shaft 50 formed on the coupler body 20 is rotatably coupled, other than the coupling pin coupled to the fixing hook 60 of the coupling pins of the attachment A moving hook 40 engaged with the pin; One end is coupled to the moving hook 40 by the first fixing pin 11, the other end is coupled to the coupler body 20 by the second fixing pin 12, the movement by stretching / contracting A hydraulic cylinder 70 for rotating the hook 40; A locking hook member (110) rotatably coupled to the coupler body (20) by the second fixing pin (12) and having one end bent in a hook shape; And One end is supported where the position is variable according to the rotation operation of the movable hook 40, the other end is a force transmission member coupled to the other end of the locking hook member 110 by a third fixing pin (13); , When the hydraulic cylinder 70 is extended, the movable hook 40 is rotated in the first rotation direction to be engaged with the coupling pin, and the locking hook member 110 is opposite to the first rotation direction. The hook-shaped end 111 approaches the fixing hook 60 by rotating in two rotational directions. When the hydraulic cylinder 70 is contracted, the movable hook 40 rotates in the second rotation direction, and the locking hook member 110 rotates in the first rotation direction so that the hook-shaped end 111 of the hydraulic cylinder 70 rotates. Attachment coupler for heavy equipment to ensure complete attachment of the attachment, characterized in that away from the fixed hook (60). The force transmission member of claim 1, wherein one end of the force transmission member is rotatably fixed to the cylinder housing 80 of the hydraulic cylinder 70 by a fourth fixing pin 14, and the other end thereof is third fixed. Attached to the other end of the lock hook member 110 by a pin (13), attachment attachment for heavy equipment to ensure the complete mounting of the attachment. The attachment coupler of claim 1 or 2, wherein the force transmission member is a straight first release link (100). The attachment coupler according to claim 1 or 2, wherein the force transmission member is a hydraulic cylinder (170). According to claim 1 or 2, wherein the force transmission member is a straight first release link 100, The first release link 100 includes a long hole 180 in the form of a through groove at an end portion of the pin that is coupled to the locking hook member 110, the third fixing pin 13 is the locking hook member ( An attachment coupler for heavy equipment to ensure complete attachment of an attachment, characterized in that coupled to the long hole (180) of the first release link (100) in a state coupled with the other end of the 110. According to any one of claims 1 to 5, one end is supported by the second fixing pin 12, the other end is fixed to the lock hook member 110 and the lock hook member 110 is the second And a torsion coil spring (190) that exerts an elastic force with respect to the lock hook member (110) to rotate in a rotational direction. According to any one of claims 1 to 5, one end is supported by the coupler body 20 and the other end is in contact with the lock hook member 110, the lock hook member 110 is the second rotation And a leaf spring (200) exerting an elastic force with respect to the lock hook member (110) to rotate in a direction. 8. The locking hook member (110) according to any one of claims 1 to 7, wherein the locking hook member (110) is always close to the fixing hook (60) by its own weight of the hook-shaped end (111). The locking hook member is secured even when the coupling pin 30a is bound to the opposite side of the fixed hook 60 so that the hydraulic oil leakage of the hydraulic cylinder 70 or the breakage of the hydraulic cylinder rod or breakage of the movable hook 40 occurs. Attachment coupler for heavy equipment to ensure the complete mounting of the attachment, characterized in that the departure of the first coupling pin (30a) is prevented because the (110) is not opened. An attachment coupler for coupling an attachment for a heavy equipment to an end of an arm of a heavy equipment vehicle, A coupler body 20 coupled to an end of an arm of the heavy duty vehicle; A fixed hook 60 fixedly installed at the coupler body 20 and engaged with one of the coupling pins facing the attachment; Is coupled to the coupler body 20 by the hinge shaft 50 formed on the coupler body 20 is rotatably coupled, other than the coupling pin coupled to the fixing hook 60 of the coupling pins of the attachment A moving hook 40 engaged with the pin; One end is coupled to the moving hook 40 by the first fixing pin 11, the other end is coupled to the coupler body 20 by the second fixing pin 12, the movement by stretching / contracting A hydraulic cylinder 70 for rotating the hook 40; A second release link (210) rotatably coupled to the coupler body (20) by the second fixing pin (12) and including a long hole portion (211) in the form of a through groove at one end; One end is supported where the position is variable according to the rotation operation of the movable hook 40, the other end is a force transmission member coupled to the other end of the second release link 210 by a third fixing pin (13); And It is rotatably coupled to the coupler body 20 at a position adjacent to the fixing hook 60, and one portion of the second release link 210 with the long hole 211 of the second release link 210 by a fifth fixing pin (15). Is coupled, the other portion; the locking device 115 having a locking projection (115a); includes, When the hydraulic cylinder 70 is extended, the movable hook 40 is rotated in the first rotation direction to be engaged with the coupling pin, and the second release link 210 is opposite to the first rotation direction. Rotate in two rotational directions, and the locking projection 115a approaches the fixed hook 60 by the rotation of the locking device 115 in the first rotational direction. When the hydraulic cylinder 70 is contracted, the movable hook 40 rotates in the second rotation direction, the second release link 210 rotates in the first rotation direction, and the locking device 115 The lock projection (115a) is separated from the fixed hook (60) by the rotation in the second rotation direction, attachment attachment for heavy equipment to ensure the complete mounting of the attachment. The force transmission member of claim 9, wherein one end of the force transmission member is rotatably fixed on the cylinder housing 80 of the hydraulic cylinder 70 by a fourth fixing pin 14, and the other end thereof is third fixed. Attached to the other end of the second release link 210 by a pin (13), attachment attachment for heavy equipment to ensure the complete mounting of the attachment. The attachment coupler of claim 9 or 10, wherein the force transmission member is a straight first release link (100). The attachment coupler according to claim 9 or 10, wherein the force transmission member is a hydraulic cylinder (170). The method of claim 9 or 10, wherein the force transmission member is a straight first release link 100, The first release link 100 includes a long hole 181 in the form of a through groove at the end portion that is pin-connected with the movable hook 40, the first fixing pin 11 is the movable hook 40 Attached to the long hole 181 of the first release link in a state coupled to, characterized in that the attachment coupler for heavy equipment to ensure the complete mounting of the attachment. 14. The method according to any one of claims 9 to 13, wherein the locking device (115) is rotatably coupled to the coupler body (20) by a sixth fixing pin (16); The attachment device for the heavy equipment, the locking device such that one end is supported by the sixth fixing pin 16 and the other end is fixed to the locking device 115 and the locking device 115 is rotated in the first rotation direction. An attachment coupler for heavy equipment that ensures complete attachment of an attachment, further comprising a torsion coil spring 191 exerting an elastic force with respect to 115. The method according to any one of claims 9 to 13, wherein one end is supported by the coupler body 20 and the other end is in contact with the second release link 210, and the locking device 115 rotates in the first rotation. And a leaf spring (200) exerting an elastic force with respect to the second release link (210) to rotate in the direction.

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