KR20230007709A - Tilt-only used coupler - Google Patents

Abstract

The present invention provides a coupler for tilting which can easily perform excavation work of a bucket in a narrow place. According to the present invention, the coupler for tilting has an arm, an arm cylinder positioned on one side of the arm, an articulated link connecting the arm and the arm cylinder underneath the arm and the arm cylinder, and a bucket below the articulated link in an excavator, and is positioned between the articulated link and the bucket to adjust rotation of the bucket. The coupler for tilting comprises: a rotating body positioned on the bucket to be coupled to the bucket; a fixed body coupled to the rotating body, the arm, and the articulated link on the rotating body; and a body cylinder coupled to the rotating body and the fixed body on one side of the fixed body and the rotating body to relatively rotate the rotating body relative to the fixed body.

Description

Tilt-only coupler {TILT-ONLY USED COUPLER}

The present invention, an arm in an excavator, an arm cylinder located on one side of the arm, and an articulated link connecting the arm and the arm cylinder at the lower side of the arm and the arm cylinder , and a tilt-only coupler provided with a bucket under the articulated link and positioned between the articulated link and the bucket to control rotation of the bucket.

In general, an excavator allows work efficiency to be sought while reducing input manpower despite an increase in the load and volume of a work object at a construction site, a waste collection point, or a demolition site. To this end, the excavator is often used to dig the ground or level the ground through a bucket by linking a bucket to an arm at a construction site.

Here, the excavator includes an arm cylinder located on one side of the arm, an articulated link that is rotationally fixed to the arm and the arm cylinder at the lower side of the arm, and a boom that is rotationally fixed to the arm at the upper side of the arm. However, the bucket is coupled to the multi-joint link and opens toward the driver's seat of the excavator during rotation of the arm and the arm cylinder with respect to the boom and moves closer to or away from the driver's seat.

In addition, the excavator may include a tilting unit between the multi-joint link and the bucket to connect the bucket to the arm through the tilting unit and the multi-joint link. The tilting means is coupled to the bucket and rotates around the end of the arm together with the bucket. Thereby, the tilting means freely changes the vertical position of the bucket under the arm during relative rotation of the arm and arm cylinder with respect to the boom.

When the tilting means is composed of a lower housing, an upper housing, and a hydraulic cylinder on a bucket, the hydraulic cylinder is located on both sides of the sequentially stacked lower and upper housings to rotate the upper housing relative to the lower housing in a direction different from the rotation direction of the arm. is rotated to tilt the bucket relative to the arm.

However, since the hydraulic cylinders are located on both sides of the lower and upper housings, the size of the tilting means is increased to reduce the moving range of the bucket and make it difficult to drill through the bucket in a narrow place. Further, the hydraulic cylinder rotationally fixes the cylinder rod and the cylinder tube to the lower and upper housings to ensure free movement of the cylinder rod and the cylinder tube relative to the lower and upper housings.

The cylinder tube has a larger volume than the cylinder rod. When the hydraulic cylinder rotates the lower housing relative to the upper housing, the cylinder rod and the cylinder tube are repeatedly rotated relative to the lower housing and the upper housing, and the cylinder tube is positioned relatively higher than the cylinder rod in the tilting means, and the cylinder Since it has a larger volume than the rod, it puts a burden on the durability of the tilting means.

That is, friction between the cylinder tube and the upper housing is greater than friction between the cylinder rod and the lower housing. Therefore, the friction between the cylinder tube and the upper housing causes frictional damage to at least one of the cylinder tube and the upper housing, thereby deteriorating durability of the at least one of the cylinder tube and the upper housing.

In addition, the tilting means has a towing hook on one side of the upper housing, for example, the farthest from the driver's seat of the excavator in the upper housing. The tow ring is used to accommodate the tow line and move the attachment of the excavator or the by-product of the construction site through the tow line.

However, during rotation of the arm with respect to the boom or rotation of the tilting means with respect to the arm, the tow hook releases the towline through the opening to free the attachment or construction dispersion from the tilting means or the attachment or construction from the tilting means. After the dispersion is dropped, the working environment at the construction site is deteriorated.

Meanwhile, the tilting means is similarly disclosed as a prior art in Korean Patent Registration No. 10-2121711.

Korean Registered Patent Publication No. 10-2121711

The present invention has been made to solve the conventional problems, and consists of a rotating body, a fixed body, and a body cylinder in an excavator, thereby reducing the overall size through changing the position of the body cylinder and increasing the movement range of the bucket to narrow It facilitates the excavation work of the bucket at the site, reduces the friction between the body cylinder and the fixed body during rotation of the rotating body relative to the fixed body, and prevents the towline from being separated from the towing hook of the fixed body to improve the working environment at the construction site. Its purpose is to provide a tilt-only coupler suitable for

The tilt-only coupler according to the present invention includes an arm in an excavator, an arm cylinder located on one side of the arm, and the arm and the arm on the lower side of the arm and the arm cylinder. An articulated link connecting the cylinders, and a bucket below the articulated link, positioned between the articulated link and the bucket to adjust the rotation of the bucket, located on the bucket a rotating body coupled with the bucket; a fixed body coupled to the rotating body, the arm, and the multi-joint link on the rotating body; And a body cylinder coupled to the rotating body and the fixed body at one side of the rotating body and the fixed body to relatively rotate the rotating body with respect to the fixed body, wherein the fixed body and the body cylinder, The fixing body and the body cylinder are spaced apart from each other through an anti-wear pad at a joint portion, and the fixing body includes a ring hook positioned at one edge of the fixed body, and a ratchet coupled to the hook hook. It is characterized in that it has a traction mounting ring made of a ring loop opener that rotates relatively to the ring hook through.

The rotating body includes two lower receiving rings extending toward one side of the rotating body; and a plurality of rotation rings extending from the rotation body toward the fixed body.

The two lower accommodating rings protrude from the rotating body, are exposed to the outside of the rotating body, and may be rotatably fixed to the body cylinder.

The plurality of rotation rings may protrude from the rotation body toward the fixed body and be rotatably fixed to the fixed body while being received inside the fixed body.

The fixed body includes two upper receiving rings extending toward one side of the fixed body; and a plurality of fixing rings extending from the fixing body toward the rotating body.

The two upper accommodating rings protrude from the fixing body, are exposed to the outside of the fixing body, and may be rotatably fixed to the body cylinder together with the two lower accommodating rings.

The plurality of fixing rings protrude from the fixed body toward the rotating body and are accommodated in the rotating body and are alternately positioned with the plurality of rotating rings between the rotating body and the fixed body. can

The two upper accommodating rings are located directly above the two lower accommodating rings when viewed from the annulus body toward the rotating body, have a larger width than the two lower accommodating rings, and protrude from the rotating body. The length of the two upper accommodating rings protruding from the fixing body may be longer than the length of the two lower accommodating rings.

The two upper accommodating rings, when viewed from the individual upper accommodating rings, are integrally formed with the fixed body through one accommodating half-ring, and a screw member is inserted into the other accommodating half-ring, thereby connecting the one accommodating half-ring and the other. It can be formed by screwing one receiving half ring.

The rotating body and the fixed body may rotate the rotating body with respect to the fixed body by inserting a plurality of connecting pins into the plurality of rotating rings and the plurality of fixing rings.

The body cylinder is positioned obliquely with respect to the rotating body and the fixed body when the rotating body and the fixed body are erected in a non-tilting state of the rotating body with respect to the fixed body, so that the rotating body and the fixed body It may be gradually inclined toward the outside from the rotating body and the fixed body according to the order of.

When the rotating body has two lower receiving rings on one side of the rotating body and the fixed body has two upper receiving rings on one side of the fixed body, the body cylinder is a rod coupled to each other ( A rod), a piston, and a cylindrical barrel surrounding the rod and the piston, wherein the rod is coupled to the rotating body through a rotating pin, and the barrel comprises the fixed body. It can be coupled to through the axis of rotation of the barrel.

The rod is inserted into the two lower accommodating rings and is rotatably fixed to the two lower accommodating rings by passing the rotation pin through the rod, and the barrel is inserted into the two upper accommodating rings and the barrel is rotated and fixed to the two upper accommodating rings. It may be rotationally fixed to the two upper receiving rings through a rotation shaft.

The barrel and the two upper accommodating rings have the wear prevention pad surrounding the rotation axis of the barrel between the barrel and the individual upper accommodating rings, the wear prevention pad having a shape of a flange tube. , a pad flange positioned between the barrel and the individual upper receiving ring and in contact with the barrel; and a pad tube integrally formed with the pad flange and surrounded by the individual upper receiving ring while moving away from the barrel.

The pad flange and the pad tube may have a flat curve, a plurality of pillars, or a plurality of hemispherical shapes on an inner wall of the wear protection pad, and may have a flat curve on an outer circumferential surface of the wear protection pad.

The pad flange and the pad tube have a flat curve, a plurality of columns, or a plurality of hemispherical shapes on the inner wall of the wear protection pad, and a flat curve, a plurality of columns, or a plurality of hemispherical shapes on the outer circumferential surface of the wear protection pad. It may have a hemispherical shape of

The wear-resistant pad is made of an engineering plastic obtained by mixing cast nylon with an oil lubricant, and the engineering plastic may have a friction coefficient ranging from 0.03 to 0.08.

The hook hook is integrally formed with the fixed body at the one edge of the fixed body and has a '⊂' shape, in the '⊂' shape, a connection groove at the lower end and an upper peripheral surface toward the inside at the upper end. It extends and has a first groove and a second groove that are sequentially located and communicate with each other, and the upper end can protrude more horizontally than the lower end when viewing the letter 'C' from the side of the '⊂' shape. there is.

When the '⊂' shape is viewed from the side surface as the letter 'C', the connection groove of the lower end is opened toward the opening direction of the hook, and the first groove and the second groove of the upper end are opened. The groove, when viewing the '⊂' shape as the letter 'C' from the side, is opened at right angles to the direction of the opening of the ring hanger, and the first groove and the second groove may gradually increase in order there is.

The ring loop opener may include a fixing post that is forcefully fitted into the connection groove at the lower end of the loop hanger; and a rotating bar positioned close to the lower end of the ring hook and rotating relative to the fixing post while surrounding the fixing post, wherein the fixing post is between the fixing post and the rotating latch. Has a circular toothed wheel located along the outer circumferential surface of, and the rotating latch is located around the toothed wheel between the fixing post and the rotating latch and rotates in one direction or the other direction around the central axis of rotation, and the toothed A lever may be provided to relatively rotate in a first direction or a second direction with respect to the toothed wheel by bringing an upper locking jaw or a lower locking jaw into contact with the wheel.

When the lever rotates relative to the gearwheel in the first direction or the second direction by bringing the upper locking jaw or the lower locking jaw into contact with the gearwheel, the rotation latch rotates around the fixing post. To pass through the first groove of the ring hook and fit into the second groove, or rotate around the fixing post to sequentially pass through the second groove and the first groove of the hook hook and separate from the first groove , The fixing post and the lever may constitute the ratchet.

The hook hook is formed integrally with the fixed body at one edge of the fixed body and has a '⊂' shape, in the '⊂' shape, a connection protrusion at the lower end, and an upper end from the outer circumferential surface toward the inside. It extends and has a first groove and a second groove that are sequentially located and communicate with each other, and the upper end can protrude more horizontally than the lower end when viewing the letter 'C' from the side of the '⊂' shape. there is.

The connection protrusion of the lower end protrudes toward the opening direction of the hook when viewing the '⊂' shape as the letter 'C' from the side, and the first groove and the second groove of the upper end The groove, when viewing the '⊂' shape as the letter 'C' from the side, is opened at right angles to the direction of the opening of the ring hanger, and the first groove and the second groove may gradually increase in order there is.

The ring loop opening and closing unit may include a fixed cylindrical column that is forcibly fitted into the connection protrusion at the lower end of the ring hanger; and a rotating bar positioned close to the lower end of the ring hook and rotating relative to the fixed column while surrounding the fixed column, wherein the fixed column is between the fixed column and the rotating latch. Has a circular toothed wheel located along the outer circumferential surface of, and the rotating latch is located around the toothed wheel between the fixed column and the rotating latch and rotates in one direction or the other direction around the central axis of rotation and the toothed A lever may be provided to relatively rotate in a first direction or a second direction with respect to the toothed wheel by bringing an upper locking jaw or a lower locking jaw into contact with the wheel.

When the lever rotates relative to the gearwheel in the first direction or the second direction by bringing the upper locking jaw or the lower locking jaw into contact with the gearwheel, the rotation latch rotates around the fixed cylinder. To pass through the first groove of the ring hook and fit into the second groove, or rotate around the fixed column to sequentially pass through the second groove and the first groove of the ring hook and separate from the first groove , The gear wheel and the lever may constitute the ratchet.

Since the tilt-only coupler according to the present invention has a rotating body and a fixed body sequentially stacked between an arm and a bucket, and has a body cylinder only on one side of the rotating body and the fixed body,

By adjusting the number of body cylinders coupled to the rotating body and the fixed body, the bucket excavation work can be facilitated in a narrow place by reducing the overall size and increasing the moving range of the bucket.

In addition, the tilt-only coupler according to the present invention has a rotating body sequentially stacked between an arm and a bucket, a body cylinder on one side of the fixed body, and wear between the fixed body and the body cylinder at the joint between the fixed body and the body cylinder. Since the prevention pad is provided,

Anti-wear pads can be used to reduce friction between the body cylinder and the stationary body during rotation of the rotary body relative to the stationary body.

In addition, the tilt-only coupler according to the present invention is composed of a rotating body, a fixed body, and a body cylinder between the arm and the bucket, and has a ring loop opener that opens and closes the opening of the ring hook and the ring hook in the traction mounting ring of the fixed body. ,

It is possible to improve the work environment at the construction site by preventing the tow line from being separated from the hook hook of the fixed body through the ring loop opener.

1 is an image partially showing an excavator according to the present invention.
2 is a side view showing a tilt-only coupler in the excavator of FIG. 1;
FIG. 3(a) is a plan view showing a rotating body and a fixed body in the tilt-only coupler of FIG. 2 .
3(b) is a side view showing a body cylinder in the tilt-only coupler of FIG. 2;
FIG. 4 is an image showing wear-resistant pads positioned on two upper receiving rings in the fixed body of FIG. 3(a).
5 is a perspective view showing the wear protection pad of FIG. 4;
6 is a perspective view showing a first modified example of the wear protection pad of FIG. 5;
7 is a perspective view showing a second modified example of the wear protection pad of FIG. 5;
Figure 8 is a plan view (= front view + plan view + side view) showing a traction mounting ring in the fixed body of FIG. 3 (a).
Figure 9 is an exploded view showing the ring hook and the ring loop opener in the traction mounting ring of Figure 8;
FIG. 10 is an exploded view showing a modified example of the ring hanger and the ring loop opener of FIG. 9 .
11(a) and 11(b) are schematic diagrams illustrating the operation of a ratchet in the ring loop switch of FIG. 9 .
12 (a) and 12 (b) are schematic diagrams explaining the operation of the ratchet in the ring loop opener of FIG. 10 .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The detailed description of the present invention described above refers to the accompanying drawings which illustrate, by way of example, specific embodiments in which the present invention may be practiced. These embodiments are described in sufficient detail to enable any person skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the present invention in relation to one embodiment. Additionally, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. Accordingly, the detailed description set forth below is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is limited only by the appended claims, along with all equivalents as claimed by those claims. Similar reference numerals in the drawings indicate the same or similar functions in various aspects, and the length, area, thickness, and the like may be exaggerated for convenience.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily practice the present invention.

1 is an image partially showing an excavator according to the present invention, and FIG. 2 is a side view showing a dedicated tilt coupler in the excavator of FIG. 1 .

FIG. 3(a) is a plan view showing a rotating body and a fixed body in the tilt-only coupler of FIG. 2 , and FIG. 3(b) is a side view showing a body cylinder in the tilt-only coupler of FIG. 2 .

FIG. 4 is an image showing wear protection pads positioned on two upper accommodating rings in the fixed body of FIG. 3 (a), and FIG. 5 is a perspective view showing the wear prevention pad of FIG. 4 .

6 is a perspective view showing a first modified example of the wear protection pad of FIG. 5, and FIG. 7 is a perspective view showing a second modification of the wear protection pad of FIG.

Figure 8 is a side view (= front view + plan view + side view) showing the towing hook in the fixed body of Fig. 3 (a), Figure 9 is an exploded view showing the hook hook and the hook loop opener in the towing hook of Fig. 8 .

In addition, FIG. 10 is an exploded view showing a modified example of the loop hook and loop switch of FIG. 9, and FIGS. 11 (a) and 11 (b) explain the operation of a ratchet in the loop switch of FIG. 9. 12 (a) and 12 (b) are schematic diagrams illustrating the operation of the ratchet in the ring loop switch of FIG. 10.

1 to 12, the tilt-only coupler 80 according to the present invention, as shown in FIG. 1, is located on an arm 100 and one side of the arm 100 in an excavator 120 An arm cylinder 110, and an articulated link 90 connecting the arm 100 and the arm cylinder 110 at the lower side of the arm 100 and the arm cylinder 110, and the articulated link A bucket (not shown in the figure) is provided below the 90, and is positioned between the multi-joint link 90 and the bucket to adjust the rotation of the bucket.

Looking in detail, the tilt-only coupler 80 includes a rotating body 15, a fixed body 35, and a body cylinder 50, as shown in FIG. The rotating body 15 is positioned on the bucket and coupled with the bucket. The fixed body 35 is coupled to the rotation body 15, the arm 100, and the multi-joint link 90 on the rotation body 15. The body cylinder 50 is combined with the rotating body 15 and the fixed body 35 at one side of the rotating body 15 and the fixed body 35 to make the rotating body 15 relative to the fixed body 35. Relatively rotate (R1).

Here, the fixed body 35 and the body cylinder 15 are spaced apart from each other through an anti-wear pad (73 in FIG. 2 or 4) at a joint between the fixed body 35 and the body cylinder 15. The fixed body 35, considering Figures 1 and 3 (a) and 8, the ring hook 22 located on one edge of the fixed body 35, and coupled to the ring hook 22 It has a traction mounting ring 29 consisting of a ring loop opener E1 that rotates relative to the ring hook 22 through a ratchet (24, L in FIG. 11).

Considering FIGS. 2 and 3(a), the rotating body 15 is fixed from two lower receiving rings 5 extending toward one side of the rotating body 15 and the rotating body 15. It includes a plurality of rotating rings 10 extending toward the body 35 . Considering FIGS. 2 and 3 (a), the two lower receiving rings 5 protrude from the rotating body 15, are exposed to the outside of the rotating body 15, and are rotationally fixed to the body cylinder 50. do. Considering FIGS. 2 and 3 (a), the plurality of rotation rings 10 protrude from the rotation body 15 toward the fixed body 35 and are accommodated in the fixed body 35 while being accommodated in the fixed body. It is rotationally fixed at (35).

Considering FIGS. 2 and 3(a), the fixed body 35 rotates from the two upper receiving rings 21 extending toward one side of the fixed body 35 and the fixed body 35. It includes a plurality of fixing rings 30 extending toward the body 15 . Considering FIGS. 2 and 3 (a), the two upper receiving rings 21 protrude from the fixed body 35 and are exposed to the outside of the fixed body 35, and the two lower receiving rings 5 ) and is rotationally fixed to the body cylinder 50.

Considering FIGS. 2 and 3 (a), the plurality of fixing rings 30 protrude from the fixing body 35 toward the rotating body 15 and are received inside the rotating body 15 while rotating the body. Between (15) and the fixed body (35) a plurality of rotating rings (10) and alternately positioned (交互的). Here, the two upper receiving rings 21 are located directly above the two lower receiving rings 5 when viewed from the ring body 35 toward the rotating body 15 in FIGS. 2 and 3 (a). do.

In addition, the two upper receiving rings 21 are larger than the two lower receiving rings 5 when viewed from the ring body 35 toward the rotating body 15 in FIGS. 2 and 3(a). It has a width and has a longer length of the two upper receiving rings 21 protruding from the fixed body 35 than the length of the two lower receiving rings 5 protruding from the rotating body 15 .

In addition, the two upper receiving rings 21, in the enlarged image of FIG. 2, when viewed from the individual upper receiving rings 21, are integrally formed in the fixed body 35 through one receiving half ring, and the other one It is formed by inserting the screw member (B) into the receiving half-ring of and screwing one receiving half-ring and the other receiving half-ring. The rotating body 15 and the fixed body 35, considering FIGS. 2 and 3 (a), a plurality of connecting pins P to the plurality of rotating rings 10 and the plurality of fixing rings 30 is inserted to rotate (R1) the rotating body 15 with respect to the fixed body 35.

The body cylinder 50, when considering FIGS. 1 and 2, when the rotating body 15 and the fixed body 35 are erected in a non-tilting state of the rotating body 15 with respect to the fixed body 35 , It is positioned obliquely with respect to the rotating body 15 and the fixed body 35, and gradually outwards from the rotating body 15 and the fixed body 35 in the order of the rotating body 15 and the fixed body 35 tilted

While the rotating body 15 has two lower receiving rings 5 on one side of the rotating body 15, the fixed body 35 has two upper receiving rings on one side of the fixed body 35 ( 21), the body cylinder 50, considering FIGS. 2 and 3(a) and 3(b), a rod 44 and a piston (not shown in the drawing) coupled to each other. ), and a cylindrical barrel 48 surrounding the rod 44 and the piston.

Here, the rod 44 is coupled to the rotating body 15 through the rotating pin 42, considering FIGS. 2 and 3(b). The barrel 48 is coupled to the fixed body 35 through the rotation axis 46 of the barrel 48, considering FIGS. 2 and 3(b). Specifically, considering FIGS. 2 and 3(a) and 3(b), the rod 44 is inserted into the two lower accommodating rings 5 and the accommodating hole H1 of the rod 44 ) is rotated and fixed to the two lower receiving rings 5 by penetrating the rotation pin 42.

2 and 3(a) and 3(b), the barrel 48 is inserted into the two upper accommodating rings 21 and via the rotation axis 46 of the barrel 48, the two It is rotationally fixed to the dog's upper receiving ring (21). The barrel 48 and the two upper receiving rings 21, when considering FIGS. 2 and 4 to 7, the barrel 48 between the barrel 48 and the individual upper receiving rings 21. It has an anti-wear pad (73 or 76 or 79) surrounding the rotating shaft (46).

Here, the anti-wear pad (73 or 76 or 79) is positioned between the barrel 48 and the individual upper receiving ring 21 in FIG. 5 or 6 or 7 to have the shape of a flange tube, and the barrel A pad flange (62 or 65 or 68) in contact with (48) and a pad integrally formed with the pad flange (62 or 65 or 68) and surrounded by a separate upper receiving ring (21) away from the barrel (48). tube (61 or 63 or 66). As shown in FIG. 2 , the wear-resistant pad 73 or 76 or 79 receives the rotation shaft 46 of the barbell 48 through the through hole H2 or H3 or H4.

The pad flange (62 or 65 or 68) and the pad tube (61 or 63 or 66) have a flat curve on the inner wall (S1) of the wear protection pad (73 or 76 or 79) (see Fig. 5), or a plurality It has a pillar (64 in FIG. 6) or a plurality of hemispherical shapes (67 in FIG. 7), and the outer peripheral surface (S2) of the wear protection pad (73 or 76 or 79) has a flat curve as shown in FIG. 5 or 6 or 7 have

Alternatively, the pad flange 62 or 65 or 68 and the pad tube 61 or 63 or 66 are flat on the inner wall S1 of the wear protection pad 73 or 76 or 79 (see FIG. 5), Or a plurality of pillars (64 in FIG. 6), or a plurality of hemispherical shapes (67 in FIG. 7), not shown in the drawing, but a flat curve on the outer circumferential surface (S2) of the wear protection pad (73 or 76 or 79), Alternatively, it may have a plurality of pillars or a plurality of hemispherical shapes.

The anti-wear pad (73 or 76 or 79) is made of engineering plastic in which a lubricant is mixed with cast nylon. The engineering plastics have a friction coefficient in the range of 0.03 to 0.08.

On the other hand, the hook hook 22 of the traction mounting ring 29 is, in consideration of Figs. 1 and 3 (a) and 8 and 9, the fixed body 35 at one edge of the fixed body 35 It is formed integrally with the '⊂' shape, and in the '⊂' shape, the connection groove G at the lower end and the first groove G1 extending from the outer circumferential surface to the inside at the upper end are sequentially positioned and communicate with each other. ) and a second groove G2. The upper end protrudes more horizontally than the lower end in FIG. 8 or 9 when the '⊂' shape is viewed from the side as the letter 'C'.

As shown in FIGS. 8 and 9 , the connection groove (G) of the lower end is opened toward the opening direction of the hook hook 22 when viewing the letter 'C' from the side of the '⊂' shape. The first groove (G1) and the second groove (G2) of the upper end, as shown in Figs. 8 and 9, when viewing the '⊂' shape as the letter 'C' from the side, the opening direction of the hook hook 22 It is opened at right angles to the first groove (G1) and the second groove (G2) gradually increases according to the order.

Considering FIGS. 8 and 9, the ring loop opener E1 of the traction mounting ring 29 is a fixing post 24 that is forcibly fitted into the connection groove G at the lower end of the hook hook 22 and , It is located close to the lower end of the ring hanger 22 and includes a rotating bar 28 that rotates (R2) relative to the fixing post 24 while surrounding the fixing post 24. Considering FIGS. 8 and 9 and 11 , the fixing post 24 is a circular toothed wheel located along the outer circumferential surface of the fixing post 24 between the fixing post 24 and the rotating bar 28 ( 23).

In FIG. 9 , the fixing post 24 may extend from the rotation bar 28 toward both sides of the rotation bar 28 in different sizes. Considering FIGS. 8 and 9 and 11 , the rotation bar 28 is located between the fixing post 24 and the rotation bar 28 around the toothed wheel 23 and around the central axis X of rotation. Rotate toward one direction (R3) or the other direction (R4) and contact the upper locking jaw (D1) or the lower locking shoulder (D2) to the gearwheel (23) in the first direction (R21) with respect to the gearwheel (23). ) or a lever (L) that relatively rotates toward the second direction R22.

The fixing pillar 24 may have a curved or angular outer circumferential surface depending on the shape of the inner wall of the connection groove (G) of the hook hook (22). In addition, although not shown in detail in the drawing, the gear wheel 23 has a length of the other side smaller than the length of one side when viewed from one triangular tooth in contact with the lever L, and the circumference of the triangular tooth The rising angle of the other side is smaller than the rising angle of one side.

The lever (L) contacts the upper locking shoulder (D1) or the lower locking shoulder (D2) on the gear wheel (23) toward the first direction (R21) or the second direction (R22) with respect to the gear wheel (23) When relatively rotated, the rotation bar 28, considering FIGS. 8 and 9 and 11, rotates around the fixing post 24 and passes through the first groove G1 of the hook 22. It is inserted into the second groove (G2) or rotates around the fixing post 24 to sequentially pass through the second groove (G2) and the first groove (G1) of the ring hook (22) and separate from the first groove (G1). do. The fixing post 24 and the lever L constitute a ratchet.

Unlike this, the hook hook 25 of the towing hook 29A is integral with the fixed body 35 at one edge of the fixed body 35, considering FIGS. 1 and 3(a) and 10 It is formed to have a '⊂' shape, in the '⊂' shape, a connection protrusion P at the lower end, and a first groove G1 that is sequentially located and communicates with each other by extending from the outer circumferential surface toward the inside at the upper end It has a second groove G2. The upper end protrudes more horizontally than the lower end when viewing the '⊂' shape as the letter 'C' from the side in FIG. 10 .

The connection protrusion P of the lower end protrudes toward the opening direction of the ring hook 25 when viewing the letter 'C' from the side of the '⊂' shape in FIG. 10 . The first groove G1 and the second groove G2 of the upper end are opened at right angles to the opening direction of the ring hook 25 when viewing the '⊂' shape as the letter 'C' from the side in FIG. and gradually increases according to the order of the first groove G2 and the second groove G2.

In FIG. 10, the ring loop opener E2 of the traction mounting ring 29A is a fixed column 27 that is forcibly fitted into the connection protrusion P through the receiving hole H5 at the lower end of the hook hook 25. And, it is located close to the lower end of the ring hanger 25 and includes a rotating bar 28 that rotates relative to the fixed cylinder 27 while surrounding the fixed cylinder 27. The stationary column 27 has a circular toothed wheel 26 positioned along the outer circumferential surface of the stationary column 27 between the stationary column 27 and the rotating bar 28 in FIG. 12 .

In FIG. 10 , the fixed through column 27 may extend from the rotation bar 28 toward both sides of the rotation bar 28 in different sizes. 12, the rotation bar 28 is located around the gear wheel 26 between the fixed cylinder 27 and the rotation bar 28 and rotates in one direction R3 or the other direction around the central axis X of rotation. (R4) and contact the upper locking jaw (D1) or the lower locking jaw (D2) to the gear wheel (26) to rotate in the first direction (R21) or the second direction (R22) with respect to the gear wheel (26). has a lever (L) that rotates relative to the

The fixing column 27 may have a curved or angular inner wall depending on the shape of the outer circumferential surface of the connecting protrusion P of the ring hook 25. In addition, although not shown in detail in the drawing, the gear wheel 25 has a length of the other side smaller than the length of one side when viewed from one triangular tooth in contact with the lever L, and the circumference of the triangular tooth The rising angle of the other side is smaller than the rising angle of one side.

The lever (L) contacts the upper locking shoulder (D1) or the lower locking shoulder (D2) on the gear wheel (26) toward the first direction (R21) or the second direction (R22) with respect to the gear wheel (26). When relatively rotating, the rotation bar 28, in consideration of FIGS. 10 and 12, rotates around the fixing column 27 to pass through the first groove G1 of the hook 25 and into the second groove. It is inserted into (G2) or rotates around the fixing cylinder 27 to pass through the second groove (G2) and the first groove (G1) of the ring hook (25) sequentially and is separated from the first groove (G1). The gear wheel 25 and the lever L constitute a ratchet.

5; Lower receiving ring 10; swivel
15; rotating body, 21; upper receiving ring
30; fixed ring, 35; fixed body
42; rotating pin, 44; road
46; axis of rotation, 48; barrel
50; body cylinder, 73; anti abrasion pad
80; tilt-only coupler, B; screw member
P; contact pin, R1; rotation

Claims (25)

An arm in an excavator, an arm cylinder located on one side of the arm, and an articulated link connecting the arm and the arm cylinder at the lower side of the arm and the arm cylinder. ), and a tilt-only coupler provided with a bucket under the articulated link and positioned between the articulated link and the bucket to control rotation of the bucket,
a rotating body positioned on the bucket and coupled with the bucket;
a fixed body coupled to the rotating body, the arm, and the multi-joint link on the rotating body; and
A body cylinder coupled to the rotating body and the fixed body at one side of the rotating body and the fixed body to relatively rotate the rotating body with respect to the fixed body,
The fixed body and the body cylinder,
Spaced apart from each other through an anti-wear pad at a joint between the fixed body and the body cylinder,
The fixed body,
A tilt-only coupler having a hook hook positioned at one edge of the fixed body, and a towing ring composed of a hook loop opener coupled to the hook hook and rotated relative to the hook hook through a ratchet.
According to claim 1,
The rotating body,
two lower receiving rings extending toward one side of the rotating body; and
A tilt-only coupler comprising a plurality of rotation rings extending from the rotation body toward the fixed body.
According to claim 2,
The two lower receiving rings,
A tilt-only coupler that protrudes from the rotating body, is exposed to the outside of the rotating body, and is rotationally fixed to the body cylinder.
According to claim 2,
The plurality of rotation rings,
A tilt-only coupler that protrudes from the rotating body toward the fixed body and is rotatably fixed to the fixed body while being received inside the fixed body.
According to claim 2,
The fixed body,
two upper receiving rings extending toward one side of the fixing body; and
A tilt-only coupler comprising a plurality of fixing rings extending from the fixing body toward the rotating body.
According to claim 5,
The two upper receiving rings,
It protrudes from the fixed body and is exposed to the outside of the fixed body,
A tilt-only coupler that is rotationally fixed to the body cylinder together with the two lower receiving rings.
According to claim 5,
The plurality of fixing rings,
A tilt-only coupler protruding from the fixed body toward the rotating body and being accommodated inside the rotating body and alternately positioned with the plurality of rotating rings between the rotating body and the fixed body.
According to claim 5,
The two upper receiving rings,
When viewed from the annular body toward the rotating body,
Located directly above the two lower receiving rings,
It has a larger width than the two lower receiving rings,
A tilt-only coupler having a length of two upper accommodating rings protruding from the fixed body longer than a length of two lower accommodating rings protruding from the rotating body.
According to claim 5,
The two upper receiving rings,
Viewed from the individual upper receiving rings,
It is integrally formed with the fixed body through one receiving half ring,
A tilt-only coupler formed by inserting a screw member into the other receiving half-ring and screwing the one receiving half-ring and the other receiving half-ring together.
According to claim 5,
The rotating body and the fixed body,
A tilt-only coupler for rotating the rotating body with respect to the fixed body by inserting a plurality of connection pins into the plurality of rotation rings and the plurality of fixing rings.
According to claim 1,
The body cylinder,
When the rotating body and the fixed body are erected in a non-tilting state of the rotating body with respect to the fixed body,
A tilt-only coupler that is positioned obliquely with respect to the rotating body and the fixed body and gradually inclines outward from the rotating body and the fixed body in the order of the rotating body and the fixed body.
According to claim 1,
While the rotating body has two lower receiving rings on one side of the rotating body,
When the fixed body has two upper receiving rings on one side of the fixed body,
The body cylinder,
It includes a rod and a piston coupled to each other, and a cylindrical barrel surrounding the rod and the piston,
The load is
coupled to the rotating body through a rotating pin;
the barrel,
A tilt-only coupler coupled to the fixed body through a rotation axis of the barrel.
According to claim 12,
The load is
It is inserted into the two lower accommodating rings and is rotationally fixed to the two lower accommodating rings by passing the rotation pin through the rod,
the barrel,
A tilt-only coupler inserted into the two upper accommodating rings and rotationally fixed to the two upper accommodating rings through the rotation axis of the barrel.
According to claim 12,
The barrel, and the two upper receiving rings,
With the wear protection pad surrounding the rotation axis of the barrel between the barrel and the respective upper receiving ring,
The anti-wear pad,
To have the shape of a flange pipe,
a pad flange positioned between the barrel and the individual upper receiving ring and in contact with the barrel; and
A tilt-only coupler comprising a pad tube integrally formed with the pad flange and surrounded by the individual upper receiving ring while moving away from the barrel.
According to claim 14,
The pad flange and the pad tube,
The inner wall of the wear protection pad has a flat curve, a plurality of columns, or a plurality of hemispherical shapes,
A tilt-only coupler having a flat curve on the outer circumferential surface of the wear protection pad.
According to claim 14,
The pad flange and the pad tube,
The inner wall of the wear protection pad has a flat curve, a plurality of columns, or a plurality of hemispherical shapes,
A tilt-only coupler having a flat curve, a plurality of pillars, or a plurality of hemispherical shapes on the outer circumferential surface of the wear protection pad.
According to claim 14,
The anti-wear pad,
It is made of engineering plastic by mixing cast nylon with an oil lubricant.
The engineering plastics,
A tilt-only coupler with a friction coefficient in the range of 0.03 to 0.08.
According to claim 1,
The hook hook,
It is formed integrally with the fixed body at the one edge of the fixed body and has a '⊂' shape,
In the '⊂' shape, a connection groove at the lower end, and a first groove and a second groove that are sequentially located and communicate with each other extending from the outer circumferential surface toward the inside at the upper end,
The upper end,
When looking at the '⊂' shape as the letter 'C' from the side,
A tilt-only coupler that protrudes more horizontally than the lower end.
According to claim 18,
The connection groove of the lower end,
When viewing the '⊂' shape as the letter 'C' from the side,
Opened toward the opening direction of the ring hanger,
The first groove and the second groove of the upper end,
When viewing the '⊂' shape as the letter 'C' from the side,
A tilt-only coupler that is opened at right angles to the opening direction of the ring hook and gradually increases according to the order of the first groove and the second groove.
According to claim 18,
The ring loop switch,
A fixing post that is force-fitted into the connection groove at the lower end of the hook hook; and
It is located close to the lower end of the ring hook and includes a rotating bar that rotates relative to the fixing post while surrounding the fixing post,
The fixed pillar,
Has a circular toothed wheel positioned along the outer circumferential surface of the fixing post between the fixing post and the rotation bar,
The rotation bar,
It is located around the gear wheel between the fixing post and the rotation bar, rotates in one direction or the other direction around the central axis of rotation, and contacts the gear wheel with an upper locking jaw or a lower locking jaw to control the gear wheel. A tilt-only coupler having a lever that rotates relatively in one direction or in a second direction.
According to claim 20,
When the lever relatively rotates toward the first direction or the second direction with respect to the gearwheel by contacting the upper locking jaw or the lower locking jaw with the gearwheel,
The rotation bar,
Rotate around the fixing post and pass through the first groove of the ring hook and fit into the second groove,
It rotates around the fixing post and sequentially passes through the second groove and the first groove of the ring hook and is separated from the first groove,
The fixing pillar and the lever,
A tilt-only coupler constituting the ratchet.
According to claim 1,
The hook hook,
It is formed integrally with the fixed body at the one edge of the fixed body and has a '⊂' shape,
In the '⊂' shape, a connection protrusion at the lower end, and a first groove and a second groove that are sequentially located and communicate with each other by extending from the outer circumferential surface toward the inside at the upper end,
The upper end,
When looking at the '⊂' shape as the letter 'C' from the side,
A tilt-only coupler that protrudes more horizontally than the lower end.
23. The method of claim 22,
The connection protrusion of the lower end,
When viewing the '⊂' shape as the letter 'C' from the side,
It protrudes toward the opening direction of the ring hanger,
The first groove and the second groove of the upper end,
When viewing the '⊂' shape as the letter 'C' from the side,
A tilt-only coupler that is opened at right angles to the opening direction of the ring hook and gradually increases according to the order of the first groove and the second groove.
23. The method of claim 22,
The ring loop switch,
A fixing cylinder that is forcibly fitted into the connection protrusion at the lower end of the ring hanger; and
A rotating bar positioned close to the lower end of the hook hook and rotating relative to the fixed cylinder while surrounding the fixed cylinder,
The fixed column,
A circular toothed wheel positioned along the outer circumferential surface of the fixed cylinder between the fixed cylinder and the rotating bolt,
The rotation bar,
It is located around the gear wheel between the fixed column and the rotating bolt, rotates in one direction or the other direction around the central axis of rotation, and contacts the gear wheel with an upper locking jaw or a lower locking jaw to control the gear wheel. A tilt-only coupler having a lever that rotates relatively in one direction or in a second direction.
According to claim 24,
When the lever relatively rotates toward the first direction or the second direction with respect to the gearwheel by contacting the upper locking jaw or the lower locking jaw with the gearwheel,
The rotation bar,
Rotate around the fixed column and pass through the first groove of the ring hook and fit into the second groove,
It rotates around the fixed column and is separated from the first groove by sequentially passing through the second groove and the first groove of the ring hook,
The gear wheel and the lever,
A tilt-only coupler constituting the ratchet.

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