KR200211608Y1 - Attachment coupler for heavy industrial equipment - Google Patents

Abstract

The present invention relates to an attachment coupler for heavy machinery that prevents accidental detachment of the attachment from the arm of the excavator during operation. The present invention is fixed to the heavy equipment such as excavators in the attachment hook for heavy equipment to connect the heavy equipment and attachment, fixed hook having a coupling groove 122 is fitted with the first coupling pin (9a) of the attachment ( 120); It is installed with a predetermined interval so as to be mutually disposed with the fixed hook 120, rotates between the coupling position and the release position around the hinge axis 132, the coupling coupled to the second coupling pin (9b) of the attachment at the coupling position A mobile hook 130 having a groove 134; A locker 140 rotating between the locking position and the releasing position around the pivot pin 142 and having locking means for preventing separation of the first coupling pin 9a of the attachment from the locking position; A stopper 150 for limiting rotation of the locker to be disposed at the locked position; One end is fixed to the rocker 140 by the pivot pin (162a), the other end is fixed to the moving hook 130 by the pivot pin (164a), it is elongated or contracted by the pressure oil to move the hook (130) and the locker ( It characterized in that it comprises a hydraulic cylinder 160 for rotating 140.

Description

Heavy Duty Attachment Coupler {ATTACHMENT COUPLER FOR HEAVY INDUSTRIAL EQUIPMENT}

The present invention relates to an attachment coupler for attaching an attachment to an arm of a heavy machinery, in particular an excavator, and more particularly to an attachment coupler for heavy equipment that prevents accidental detachment of an attachment from an arm of an excavator during operation.

As is well known, excavators used on construction or civil engineering sites are not only for digging with buckets, but also for crushing concrete buildings with crushers and cutting rebars, breaking rocks and concrete with breakers. Various tasks are performed by exchanging various attachments according to the use, such as work for scrap and rock transportation using grabs, vertical shaft and water supply and drainage construction works using clamshell buckets, etc. Configured to do so.

The attachments, on the other hand, are detachably mounted to the arm of the excavator so that they can be replaced according to the purpose of the work. That is, as shown in FIG. 1 showing a bucket as an example, a pair of support brackets 3 are formed side by side in the attachment 1, and coupling holes 3a are formed in the support bracket 3 (Fig. 1). Shows the sides of the bucket, so that the support brackets are shown overlapping each other). Here, the excavator's arm 5 and the push link 7 are disposed between the pair of support brackets 3, and the coupling holes 3a of the support bracket 3 are the arm 5 and the push link 7; It is configured to align with the fastening holes (5a, 7a) of the. By this arrangement, the arm 5 and the push link 7 of the excavator are disposed between the support brackets 3 so that the coupling holes 3a and the fastening holes 5a and 7a are aligned, and the coupling holes aligned with each other ( The bucket 1 is detachably mounted to the excavator by inserting and fixing the connecting pins 8 to 3a and the fastening holes 5a and 7a.

However, in the attachment structure of such an attachment, the operator aligns the fastening holes 5a and 7a of the arm 5 and the push link 7 of the excavator and the engaging holes 3a of the bucket 1 with each other, and then aligns them. In the process of aligning the fastening holes 5a and 7a and the fastening holes 3a as well as the hassle of fixing the connection pins 8 into the fastening holes 5a and 7a and the fastening holes 3a. There was a disadvantage in that time and manpower were consumed, such as a second worker having to check this individually.

On the other hand, in view of this recently, an attachment coupler has been developed and widely used to attach an additional coupler to the arm of an excavator and easily connect the attachment using the same. As an example, referring to Korean Utility Model Publication No. 98-63058 shown in FIG. 2, the attachment coupler 10 has a body 12, and a pair of fastening plates 13 facing the upper portion of the body 12. 2 is a side cross-section of the attachment coupler, whereby only one fastening plate is shown. Fixing holes 13a are formed at both sides of the fastening plate 13, and the fixing holes 13a of the opposite fastening plate 13 are coaxial with each other. Meanwhile, an arm 5 of the excavator and a push link 7 are disposed between the pair of fastening plates 13, and the fixing holes 13a of the fastening plate 13 are the arm 5 and the push link of the excavator ( It is configured to align with the fastening holes (5a, 7a) of 7). Here, the connecting pin 15 is fitted into the fixing holes 13a and the fastening holes 5a and 7a aligned with each other, whereby the attachment coupler 10 is firmly fixed to the excavator.

On the other hand, the lower portion of the body 12 is provided with a predetermined interval so that the fixed hook 20 and the movable hook 30 are disposed (상호) mutually. The fixed hook 20 is integrally formed with the body 12 and has a coupling groove 22 that can be coupled to the first coupling pin 9a formed in the bucket 1. In addition, the movable hook 30 is rotatable between the 'engagement position' (A) and the 'release position' (B) around the hinge shaft (30a), the second coupling pin (9b) formed in the bucket (1) It has a coupling groove 32 that can be coupled with. Here, the moving hook 30 is configured to be fixed to the body 12 by a fixing pin 34 so that its position can be fixed at the 'coupling position' (A).

And the body 12 is provided with a hydraulic cylinder 40 for rotating the moving hook (30). The hydraulic cylinder 40 is composed of a cylinder housing 42 and a cylinder rod 44, the cylinder housing 42 is fixed to the body 12 by a pivot pin 42a, the cylinder rod 44 is pivoted It is fixed to one side of the moving hook 30 by the pin (44a). The hydraulic cylinder 40 is extended or contracted by the pressure oil supplied from the excavator to move the movable hook 30 from the coupling position (A) to the release position (B), from the release position (B) It rotates to the coupling position '(A).

Looking at the operation of the attachment coupler having such a configuration as follows. First, the hydraulic cylinder 40 is contracted so that the movable hook 30 is disposed at the 'release position' B while the attachment coupler 10 is fixed to the excavator arm 5 and the push link 7. Then, the fixing hook 20 is hooked to the first coupling pin 9a so that the coupling groove 22 of the fixing hook 20 and the first coupling pin 9a of the bucket 1 are engaged with each other. Using the cylinder (not shown) and the push link 7, the attachment coupler 10 is slowly rotated so that the coupling groove 32 of the mobile hook 30 and the second coupling pin 9b of the bucket 1 are aligned. Let's do it. When the coupling groove 32 of the movable hook 30 and the second coupling pin 9b of the bucket 1 are aligned, the hydraulic hook 40 is extended to move the hook to be disposed at the 'coupling position' A. Rotate 30). At this time, as the position of the movable hook 30 is disposed at the 'coupling position' (A), the coupling groove 32 of the movable hook 30 and the second coupling pin 9b of the bucket 1 are coupled to each other, In this state, the bucket 1 is mounted to the arm 5 of the excavator. Finally, the moving hook 30 is fixed to the body 12 by using the fixing pin 34 to prevent the movement of the moving hook 30. On the other hand, when the bucket 1 is to be separated from the excavator, it may be operated in the opposite manner to the above.

However, the attachment coupler 10 as described above has the advantage of being able to quickly and easily connect and detach attachments such as buckets to the excavator, but also, the operator can directly move the hook 30 using the fixing pin 34. There was a hassle to fix to the body 12.

In addition, the moving hook 30 in which the distance between the first coupling pin 9a and the second coupling pin 9b of the bucket 1, that is, the distance between the pins, is fixed by the fixing pin 34 shown in FIG. 2. When the length and the length of the fixing hook 20 and the short, it is impossible to insert the fixing pin 34, so that the fixing pin 34 has a fixing effect only on a special attachment. Therefore, in most cases, the working without the fixing pin 34 is inserted, after all, the attachment is a problem that can be easily separated from the arm of the excavator.

In addition, when the hydraulic oil supplied to the hydraulic cylinder 40 is leaked or the hydraulic cylinder 40 or the moving hook 30 is damaged during the operation, there is a problem that the attachment is separated from the attachment coupler 10. That is, when the hydraulic oil supplied to the hydraulic cylinder 40 leaks, the hydraulic cylinder 40 is contracted at a high speed, and when the hydraulic cylinder 40 is contracted, the position is fixed only by the fixing pin 34 Relatively much weight is concentrated on the mobile hook 30, resulting in the mobile hook 30 being damaged. As a result, as the movable hook 30 is broken, the attachment 1 is separated from the excavator while being separated from the fixed hook 20.

On the other hand, by installing a separate check valve to prevent the hydraulic cylinder 40 from contracting when leaking oil pressure, if the load of the relatively heavy attachment and the work load is applied to the moving hook 30 at the same time, fixed Compared with the hook 20, the movable hook 30, which is weak in strength, may be damaged. As a result, the movable hook 30 is broken, and the attachment is separated from the excavator while being detached from the fixed hook 20.

Accordingly, the present invention has been made to solve the conventional problems as described above, the object is to provide an attachment coupler for heavy equipment for quickly and simply connecting the attachment to heavy equipment such as excavators.

Another object of the present invention is to provide an attachment coupler for heavy equipment for preventing accidental detachment of attachment from heavy equipment such as an excavator during operation.

Still another object of the present invention is to provide a heavy equipment attachment coupler for firmly connecting an attachment to heavy equipment such as an excavator regardless of the distance between the coupling pins of the attachment.

1 is a side view showing the attachment of the attachment directly to the arm of the heavy equipment of the conventional attachment method;

2 is a cross-sectional view showing the configuration of a conventional attachment coupler for heavy equipment;

Figure 3 is a cross-sectional view showing the configuration of the attachment coupler for heavy equipment according to the present invention,

4a and 4b and 4c are cross-sectional views showing the operation of the attachment coupler for heavy equipment according to the present invention.

♣ Explanation of symbols for the main parts of the drawing ♣

100: attachment coupler 110: body

120: fixed hook 122: coupling groove

124: entrance 130: moving hook

132: hinge shaft 134: coupling groove

140: rocker 142: pivot pin

144: nose 150: stopper

160: hydraulic cylinder 162: cylinder housing

164: cylinder rod 162a, 164a: pivot pin

In order to achieve this object, the present invention is fixed to the heavy equipment such as excavators in the attachment coupler for heavy equipment to connect the attachment with the heavy equipment, fixed with a coupling groove that is coupled to the first coupling pin of the attachment With a hook; A movable hook installed at predetermined intervals so as to be mutually disposed with the fixing hook, rotating between a coupling position and a release position about a hinge axis, and having a coupling groove coupled with the second coupling pin of the attachment at the coupling position; A locker rotating between a locking position and a release position about a pivot pin and having locking means for preventing the first coupling pin of the attachment from being released from the locking position; A stopper for limiting rotation of the locker to be disposed at a locked position; One end is fixed to the rocker by the pivot pin, the other end is fixed to the moving hook by the pivot pin, characterized in that it comprises a hydraulic cylinder for extending or contracting by the hydraulic oil to rotate the moving hook and the rocker.

Preferably, the locking means is a nose that protrudes from the locker to protrude into the coupling groove in the locked position to narrow the inlet of the coupling groove.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the attachment coupler for heavy equipment according to the present invention will be described in detail.

3 is a cross-sectional view showing the configuration of the attachment coupler for heavy equipment according to the present invention, Figures 4a and 4b and 4c is an operation of the attachment coupler for heavy equipment according to the present invention. First, as shown in FIG. 3, the attachment coupler 100 has a body 110, and a pair of fastening plates 112 facing each other are formed on the upper portion of the body 110 (in FIG. 3, the side of the attachment coupler). A cross section is shown, so that only one fastening plate is shown). Fixing holes 114 are formed at both sides of the fastening plate 112, and the fixing holes 114 of the fastening plate 112 facing each other are coaxial with each other. Meanwhile, an arm 5 of the excavator and a push link 7 are disposed between the pair of fastening plates 112, and the fixing holes 114 of the fastening plate 112 are the arms 5 and the push links of the excavator. It is configured to align with the fastening holes (5a, 7a) of 7). Here, the connection pins 115 are inserted into and fixed to the fixing holes 114 and the fastening holes 5a and 7a aligned with each other, whereby the attachment coupler 100 is firmly fixed to the excavator.

On the other hand, the lower portion of the body 110 is installed with a predetermined interval so that the fixed hook 120 and the moving hook 130 are disposed (상호) mutually. The fixed hook 120 is integrally formed with the body 110 and has a coupling groove 122 that can be coupled with the first coupling pin 9a formed in the bucket 1. Here, the coupling groove 122 is deep so that the first coupling pin (9a) of the bucket 1 can be completely inserted, the width is configured to be the same as the diameter of the first coupling pin (9a). In addition, the movable hook 130 is rotatable between the 'engagement position' (A) and the 'release position' (B) around the hinge shaft 132, the second coupling pin (9b) formed in the bucket (1) It has a coupling groove 134 that can be combined with.

In addition, the locker 140 is installed in the body 110 to prevent the first coupling pin 9a of the bucket 1 from being separated from the coupling groove 122 of the fixing hook 120. The rocker 140 is configured to be rotatable between the 'lock position' (X) and the 'release position' (Z) around the pivot pin 142, and the bottom of the nose 144 and the engaging surface 145. Is formed. The nose 144 serves to narrow the inlet 124 of the coupling groove 122 by protruding into the coupling groove 122 when the locker 140 is disposed at the 'locking position' (X). 145 is in close contact with the first coupling pin 9a so that the first coupling pin 9a of the bucket 1 is not separated from the coupling groove 122. On the other hand, the locker 140 is supported by the stopper 150 formed in the body 110 is configured to limit further rotation in the 'lock position' (X). In addition, the locker 140 is configured to be always disposed in the 'lock position' (X) by the torsion spring 146, which is supported on both ends of the body 110 and the rocker 140, respectively. This is to prevent the rotation of the locker 140 even if the hydraulic cylinder 160 to be described later is contracted or damaged, so that the first coupling pin 9a is not separated from the coupling groove 122.

And the body 110 is provided with a hydraulic cylinder 160 for rotating the moving hook 130 and the rocker 140. The hydraulic cylinder 160 is composed of a cylinder housing 162 and a cylinder rod 164, the cylinder housing 162 is fixed to one side of the locker 140 by a pivot pin 162a, the cylinder rod 164 Is fixed to one side of the moving hook 130 by the pivot pin (164a).

The hydraulic cylinder 160 is stretched or contracted by the hydraulic oil supplied from the excavator to move the hook 130 and the rocker 140 from the 'release position' (B) to the 'combination position' (A), 'release position' Rotate from (Z) to 'locked position' (X), or from 'engaged position' (A) to 'unlocked position' (B) and 'locked position' (X) to 'unlocked position' (Z) It plays a role. In particular, the hydraulic cylinder 160 rotates the locker 140 from the 'release position' (Z) to the 'lock position' (X), thereby causing the nose 144 of the locker 140 formed on the fixed hook 120. The inlet 124 of the coupling groove 122 is narrowed to prevent accidental detachment of the first coupling pin 9a of the bucket 1 inserted into the coupling groove 122.

Next, the operation of the attachment coupler having such a configuration will be described with reference to FIGS. 4A to 4C. First, as shown in FIG. 4A, the attachment hook 100 is fixed to the excavator's arm 5 and the push link 7 so that the position of the movable hook 130 is disposed at the 'release position' B. The hydraulic cylinder 160 is contracted. Then, the fixing hook 120 is fastened to the first coupling pin 9a so that the coupling groove 122 of the fixing hook 120 and the first coupling pin 9a of the bucket 1 are coupled to each other. At this time, since the hydraulic cylinder 160 is in a contracted state, the locker 140 is disposed at the 'release position' Z. Therefore, the first coupling pin 9a of the bucket 1 is the inlet of the fixed hook 120. While passing through the 124 is naturally seated in the coupling groove (122). On the other hand, in this state as shown in Figure 4b using the arm cylinder (not shown) and the push link 7 of the excavator, the engaging groove 134 of the mobile hook 130 and the second of the bucket (1) Slowly rotate the attachment coupler 100 so that the coupling pins 9b are aligned. When the coupling groove 134 of the movable hook 130 and the second coupling pin 9b of the bucket 1 are aligned, the hydraulic cylinder 160 is extended to extend the hydraulic coupling 160 with the second coupling pin 9b of the bucket 1. The moving hook 130 is rotated to the 'coupling position' A so that the coupling groove 134 of the moving hook 130 is coupled to each other.

On the other hand, as the position of the movable hook 130 is disposed in the 'combination position' (A), the hydraulic cylinder 160 that is continuously extended to press the rocker 140, the pressurized rocker 140 is shown in Figure 4c As shown, the position is rotated from the 'release position' (Z) to the 'lock position' (X) and the position is disposed at the 'lock position' (X). At this time, since the rotation of the locker 140 is limited by the stopper 150, its position is fixed at the 'locking position' (X). On the other hand, as the locker 140 is disposed in the 'locking position' (X), the nose 144 of the locker 140 protrudes into the coupling groove 122 to narrow the inlet 124 of the coupling groove 122. By the narrowed inlet 124, in particular, the first coupling pin 9a of the bucket 1 supported by the locking surface 145 of the locker 140 is not separated from the coupling groove 122.

In this state, the bucket 1 can be quickly and simply mounted on the excavator arm 5. In particular, even if the hydraulic cylinder 160 is contracted or the movable hook 130 is broken and the second coupling pin 9b of the bucket 1 is separated from the coupling groove 134 of the movable hook 130, the locker 140 may be removed. Since the first coupling pin 9a of the bucket 1 is firmly coupled to the coupling groove 122 of the fixed hook 120, the bucket 1 is not separated from the excavator. On the other hand, when the bucket 1 is to be separated from the excavator, do.

As described above, the attachment coupler for heavy equipment of the present invention includes a fixed hook 120 and a mobile hook 130 that are coupled to the first coupling pin 9a and the second coupling pin 9b of the attachment. Attachments can be connected quickly and easily. In particular, by having a locker 140 for locking the first coupling pin 9a of the attachment and the fixing hook 120 of the coupler 100 to each other, there is an advantage of preventing accidental detachment of the attachment from the heavy equipment.

The above-described embodiments are merely illustrative of preferred embodiments of the present invention, and the scope of application of the present invention is not limited thereto, and may be appropriately changed within the scope of the same idea. For example, the shape and structure of each component specifically shown in the embodiment of the present invention can be modified.

As described above, the attachment coupler for heavy equipment according to the present invention has a fixed hook and a movable hook coupled with the first coupling pin and the second coupling pin of the attachment, so that the attachment can be quickly and easily connected to the heavy equipment such as an excavator. That has the advantage. In addition, regardless of the distance between the coupling pins of the attachment has the advantage of being able to firmly connect the attachment to heavy equipment such as excavators.

In addition, by providing a locker for locking the fixing hook of the coupling pin and the coupler of the attachment to each other, there is an effect of preventing the accidental separation of the attachment from the heavy equipment.

Claims (3)

In the attachment coupler for heavy equipment to be fixed to the heavy equipment such as an excavator by the connecting pin to connect the heavy equipment and attachment, A fixed hook 120 having a coupling groove 122 into which the first coupling pin 9a of the attachment is fitted; It is installed with a predetermined interval so as to be mutually disposed with the fixed hook 120, rotates between the coupling position (A) and the release position (B) around the hinge axis 132, the coupling position (A) of the attachment A mobile hook 130 having a coupling groove 134 coupled to the second coupling pin 9b; Locker having a locking means for rotating between the locking position (X) and the release position (Z) around the pivot pin 142, and prevents the detachment of the first coupling pin (9a) of the attachment at the locking position (X) 140; A stopper 150 for limiting rotation of the locker 140 to be disposed at the lock position X; One end is fixed to the rocker 140 by the pivot pin 162a, and the other end is fixed to the moving hook 130 by the pivot pin 164a, and is extended or contracted by pressure oil so that the movable hook 130 and the rocker are fixed. Attachment coupler for heavy equipment, characterized in that it comprises a hydraulic cylinder (160) for rotating (140). The nose 144 of claim 1, wherein the locking means protrudes from the locker 140 to protrude from the locking position X to the coupling groove 122 to narrow the inlet 124 of the coupling groove 122. Attachment coupler for heavy equipment, characterized in that). The attachment coupler according to claim 1, further comprising a torsion spring (146) for elastically pressing the locker (140) in the lock position (X) direction.