KR20230155280A - The connection structure for mounting bracket of excavator - Google Patents

Abstract

The present invention improves the coupling structure of the connecting pins coupled to the two holes formed on one end and the other end of the left and right bodies of the mounting bracket, enabling the distance between the first and second connecting pins to be adjusted and the first and second connecting pins It relates to a mounting bracket connection structure for an excavator whose structure has been improved so that the compatibility of the mounting distance, width, and pin diameter can be improved even if the excavator's boom type is different by adjusting the pin diameter and the width of the mounting portion.

Description

The connection structure for mounting bracket of excavator}

The present invention relates to a mounting bracket connection structure for an excavator. In particular, the connection structure between the first and second connection pins is improved by improving the connection structure of the connection pins coupled to the two holes formed on one end and the other end of the left and right bodies of the mounting bracket. For excavators whose structure has been improved so that the distance can be adjusted and the pin diameters of the first and second connecting pins and the width of the mounting part can be adjusted to improve the mounting compatibility of the mounting distance, width, and pin diameter even if the excavator boom type is different. It relates to the mounting bracket connection structure.

In general, an excavator is a type of construction equipment that performs excavation work such as digging or drilling into the ground by mounting an excavation tool such as a bucket or breaker on the front of the arm.

In general, an excavator is a device that excavates the ground, scoops out dirt and sand, breaks rocks, or destroys paved roads made of asphalt or concrete. Depending on the purpose of the work, a bucket or breaker is installed at the tip of the main boom. It is configured to be installed selectively.

The excavator of the prior art has a structure in which a bucket or breaker is directly coupled to the tip of the main boom, and the main boom and bucket or breaker are assembled or disassembled by two coupling pins.

However, the prior art of coupling and disassembly using two coupling pins as described above has the following problems.

Typically, buckets or breakers for excavators are quite heavy, so not only is it difficult to move the bucket or breaker using human labor, but it is also difficult to hit the coupling pin with a hammer when attaching or disassembling the bucket or breaker to the tip of the main boom. Because the work had to be done, the work of replacing buckets and breakers was very slow and took a lot of effort, which was inconvenient.

In addition, conventional excavators are manufactured with different bucket and breaker specifications depending on the manufacturer. For example, for each manufacturer, not only are the spacing between the two coupling holes formed in the bucket and breaker differently designed, but the width of the bracket into which the coupling pin is inserted is designed differently, so the bucket and breaker are designed differently. Only those made by the excavator manufacturer can be combined and used, but it has been pointed out as a problem that buckets or breakers cannot be combined with the excavator manufacturer and other companies.

Meanwhile, in consideration of the inconvenience caused by directly coupling the bucket and breaker to the tip of the main boom of the excavator as described above, a coupler designed to be pre-mounted on the tip of the main boom and to easily combine and dismantle the bucket or breaker has been introduced. In this conventional coupler, the gap between the two coupling pins on the top of the bucket or breaker is fixed so that it cannot be adjusted, so if the manufacturer of the excavator and the manufacturer of the bucket or breaker are different. It is pointed out that the problem is that the excavator cannot be used because the bucket or breaker cannot be accurately and firmly coupled to the main boom of the excavator due to the specifications not being met. This problem is due to the lifespan of the bucket or breaker of the excavator being used. If multiple excavators used at a work site are from different manufacturers, buckets or breakers cannot be used in the event of a breakdown or failure, which may lead to delays in construction.

The conventional prior art related to the existing excavator bracket is as disclosed in Korean Registered Utility Model Publication No. 20-0374422 "Multi-purpose power bucket for excavator" (registration date: January 19, 2005), two couplings spaced a predetermined distance apart at the top. A ball is formed, and the outer direction of the two coupling holes at the bottom is combined so that the two plates each have a through hole formed, and the arm of the excavator body is pin-connected to the front coupling hole, and the front is a bucket. A bracket with a link coupled to the cylinder coupled with a pin; It is composed of two side plates that are concavely curved toward the rear and face each other left and right with a through hole formed at the upper end and the center, and a rear plate coupled between the side plates, and the upper end rotates in the through hole in the front lower part of the bracket. It is pin-connected to the front bucket and; a rear bucket that is symmetrical to the front bucket and is rotatably coupled to a through hole in the rear lower part of the bracket; a front cylinder that makes a linear reciprocating motion by hydraulic pressure, one end of which is coupled to the front side of the bracket, and the other end of which is coupled to a through hole formed in the center of the front bucket side plate; A rear cylinder that makes a linear reciprocating motion by hydraulic pressure, one end of which is coupled to the rear of the bracket, and the other end of which is coupled to a through hole formed in the center of the rear bucket side plate. It's about buckets.

Other prior art related to existing excavator brackets include, as disclosed in Korea Registered Utility Model Publication No. 20-0347264, “Excavator Excavator Connecting Device” (registration date: March 30, 2004), a device installed on the lower part of the operating arm of an excavator. In the connection device for interconnecting the first and second upper connecting shafts included in the provided bent portion and the first and second lower connecting shafts provided on the upper side of the excavating tool, the connecting device is provided at the front and rear of the upper part of the middle plate. A pair of upper brackets through which the first and second upper connecting shafts are connected through, and lower and side opening grooves provided at the front and rear of the lower part of the middle plate, on one and the other side into which the first and second lower connecting shafts are inserted. This formed pair of lower brackets, a cylinder inclined in the longitudinal direction between the front and rear lower brackets, the other side is connected to the end of the cylinder rod through a connecting means, and one upper surface is downward from the upper side to one side end. A movable clamp formed with a close contact inclined surface that presses and interrupts the outer surface of the first lower connecting shaft inserted into the lower opening groove at an inclined angle through line contact, and is provided to protrude symmetrically on the inside of the front and rear lower brackets to move the It is characterized by being composed of a pair of guide parts that guide the movement of the wedge.

However, the structure of the mounting bracket that connects the boom bar of an existing excavator and the coupler for connection to the attachment is such that the arm connected to the cylinder placed on the boom bar is connected to the body with one pin fixed, so the mounting distance, width, and pin diameter are It has the disadvantage of being limited, and as a result, compatibility with mounting brackets suitable for the boom width and pin diameter depending on the type of excavator is reduced, and there is an economic burden of having to provide mounting brackets of various dimensions for this purpose.

Korean Registered Utility Model Publication No. 20-0374422 “Multi-purpose power bucket for excavator” (Registration date: 2005. 01.19) Korean Registered Utility Model Publication No. 20-0347264 “Excavator excavator connection device” (Registration date: 2004. 03.30)

The present invention was created to solve the above-mentioned problems in consideration of the above-mentioned problems. The purpose of this invention is to improve the coupling structure of the connecting pins connected to the two holes formed on one end and the other end of the left and right bodies to connect the first and second pins. By allowing the distance between the connection pins to be adjusted and the pin diameter of the first and second connection pins and the width of the mounting part to be adjusted, the structure has been improved to improve the installation compatibility of the mounting distance, width, and pin diameter even if the excavator boom type is different. The purpose is to provide a mounting bracket connection structure for an excavator.

In order to achieve the above object, the present invention has a connection plate coupled to the attachment equipment at the bottom, left and right bodies formed in a vertical direction on the upper left and right sides of the connection plate, and the left and right bodies of the left and right bodies. a mounting bracket having first and second connection holes drilled at one end and the other end, respectively; a first connection pin coupled to penetrate the first connection holes of the left and right bodies; a second connection pin coupled to penetrate the second connection holes of the left and right bodies; and a coupling means for coupling the second connection pin to the second connection hole,

The second connection hole is formed so that the second connection pin is selectively coupled to one of the upper and lower positions in order to adjust the distance between the first connection pin and the coupling means, respectively, on the left and right bodies. It is characterized in that it is provided with a coupling plate in which first and second coupling holes are formed at the top and bottom so that the second connection pin selectively penetrates.

The first and second connection pins are each provided with bush members at one end and the other end having an outer diameter larger than the outer diameter of the middle portion.

It is further provided with an adjustment means for adjusting the combined length of the bush member and the second connection pin, wherein the adjustment means includes a male thread formed on the outer peripheral surface of both ends of the second connection pin and both ends of the second connection pin inserted. and a female thread portion formed on the inner peripheral surface of the bush member so that the male thread portion is screwed together.

Another characteristic element of the present invention is that a connection plate coupled to the attachment equipment is formed at the bottom, left and right bodies are formed in a vertical direction on the upper left and right sides of the connection plate, and one end of the left and right bodies and a mounting bracket having first and second connection holes drilled at the other ends, respectively; a first connection pin coupled to penetrate the first connection holes of the left and right bodies; a second connection pin coupled to penetrate the second connection holes of the left and right bodies; and a coupling means for coupling the second connection pin to the second connection hole, wherein the coupling means is coupled to the left and right bodies, respectively, and a fitting hole through which the second connection pin passes is formed, and when rotating, the coupling means is coupled to the left and right bodies, respectively. The insertion hole is characterized in that it is provided with a bush cap that is formed eccentrically to adjust the distance between the pins of the first and second connection pins.

The second connection pin has a bush member having an outer diameter larger than the outer diameter of the middle portion at one end and the other end, a male thread formed on the outer peripheral surface of both ends of the second connection pin, and both ends of the second connection pin are inserted. and further includes a female thread portion formed on the inner peripheral surface of the bush member so that the male thread portion is screwed together.

It is further provided with a width adjustment means for adjusting the width direction spacing of the bush caps respectively coupled to the left and right bodies to correspond to the change in the end width of the excavator boom, and the width adjustment means is formed in a plurality on the flange portion of the bush cap. Prevents the first fastening hole, an adjustment bolt whose one end is fastened to the first fastening hole and is coupled to penetrate the left and right bodies, and the flange portion of the bush cap that contacts the boom bar of the excavator from being pushed outward. a fixing nut screwed to the other end of the adjustment bolt from the outside of the left and right bodies so as to do so, and a plurality of fixtures formed on the outside of the fitting part of the bush cap and coupled with a pull-out jig for an external pull-out operation of the bush cap. It is equipped with 2 fastening holes.

The width adjustment means further includes a washer member disposed between the fixing nut and the outer surfaces of the left and right bodies.

In one embodiment of the present invention, the second connection hole is formed at the top and bottom so that the connection position of the second connection pin can be selected, so that the distance between the first and second connection pins is reduced due to the displacement of the connection height of the second connection pin. It has the useful advantage of being able to adjust and respond to changes in the dimensions of the excavator boom, thereby improving mounting compatibility.

In addition, in one embodiment of the present invention, since bush members are provided at both ends of the first and second connection pins, the first and second connection pins with small pin diameters suitable for the dimensions of the excavator boom can be coupled to the mounting bracket. Accordingly, it has the useful advantage of improving the mounting compatibility of the excavator boom and mounting bracket.

In addition, one embodiment of the present invention further includes an adjustment means for adjusting the spacing of the bush members, so that the width of the mounting area with the excavator boom can be adjusted, and the operating noise can be reduced by reducing the clearance when mounted and coupled with the excavator boom. It has the advantage of being able to

Another embodiment of the present invention is to eccentrically form a fitting hole in the bush cap, so that the distance between the pins of the first connection pin and the second connection pin can be adjusted to be closer or farther apart, so that the mounting bracket can be connected depending on the mounting area with the boom bar. It has the useful advantage of improving compatibility.

Figure 1 is an exploded perspective view showing an example of a mounting bracket connection structure for an excavator according to the present invention.
Figure 2 is a combined state diagram of Figure 1.
Figure 3 is a cross-sectional view taken along line AA of Figure 2.
Figure 4 is a front view showing the upper and lower coupling positions of the second connection pin of the present invention, respectively.
Figure 5 is an exploded perspective view showing the control means of the present invention.
Figure 6 is a diagram showing the state of use of the control means of the present invention.
Figure 7 is an exploded perspective view showing another embodiment of the mounting bracket connection structure for an excavator according to the present invention.
Figure 8 is a combined state diagram of Figure 7.
Figure 9 is a cross-sectional view taken along line BB of Figure 8.
Figures 10a and 10b are front views showing the eccentric state of the second connection pin of the present invention.
Figure 11 is a use state diagram showing a state in which the distance between pins is varied during the rotation of the bush cap of another embodiment of the present invention.
Figure 12 is a configuration diagram showing another embodiment of the present invention.
13 is a state diagram of another embodiment of the present invention.
Figure 14 is a diagram showing the drawing jig of the present invention.
Figure 15 is a cross-sectional view showing the end structure of the support rod of the pull-out jig of the present invention.

In describing the present invention, if it is determined that specific descriptions of related known technologies or configurations may unnecessarily obscure the gist of the present invention, detailed descriptions thereof will be omitted. The terms described below are terms defined in consideration of functions in the present invention and may vary depending on the user's intention or custom. Therefore, the definition should be made based on the contents throughout this specification. In addition, 'including' a certain component does not mean excluding other components, but may include other components, unless specifically stated to the contrary.

One embodiment of the mounting bracket connection structure for an excavator according to the present invention will be described with reference to FIGS. 1 to 4, and a connection plate 105 coupled to an attachment equipment (not shown) is formed at the bottom, and the connection plate ( Left and right bodies 110 and 120 are formed in a vertical direction on the upper left and right sides of 105), and first and second connection holes 122 and 124 are drilled at one end and the other end of the left and right bodies 110 and 120, respectively. Mounting bracket 100; A first connection pin 200 coupled to penetrate the first connection hole 112 of the left and right bodies 110 and 120; A second connection pin 300 coupled to penetrate the second connection hole 122 of the left and right bodies 110 and 120; and a coupling means for coupling the second connection pin 300 to the second connection hole 122, wherein the second connection hole 122 adjusts the distance between the second connection pin 300 and the first connection pin 200. In order to do this, the second connection pin 300 is formed to be selectively coupled to one of the upper and lower positions, and the coupling means is coupled to the left and right bodies 110 and 120, respectively, and the second connection pin 300 is It includes a coupling plate 400 in which first and second coupling holes 410 and 420 are formed at the top and bottom to selectively penetrate.

Referring to Figures 1 and 2, the mounting bracket 100 is formed so that the left and right bodies 110 and 120 extend vertically to the upper left and right sides of the connection plate 105, and the left and right bodies (110,120) have structures that are symmetrical to each other.

The mounting bracket 100 has a connection plate 105 coupled for connection with construction attachment equipment, and is a coupler connected to the end of the excavator's boom or the end of the boom to the first and second connection pins 200 and 300 pinned on the upper side. (not shown) has a structure in which it is detachably connected.

The first connection hole 112 is formed in a circular shape at the same height at the upper ends of the left and right bodies 110 and 120.

The second connection hole 122 is formed at the top of the other end of the left and right bodies 110 and 120, and is formed upward and downward so that the second connection pin 300 is selectively coupled to the upper or lower height position. .

As shown in FIGS. 1 and 2, the coupling plate 400 is formed in the form of an oval plate with the first and second coupling holes 410 and 420 formed at the top and bottom, and is connected to the left and right bodies 110 and 120. They are in close contact with each other on the inner side facing each other, and have a structure that is fastened with bolts to be fixed to the left and right bodies 110 and 120.

The first coupling hole 410 is formed on the upper side of the second coupling hole 420, and is formed between the second connection pin 300 and the first connection pin 200 coupled to the first coupling hole 410. The inter-pin distance between the second connection pin 300 coupled to the second coupling hole 420 and the first connection pin 200 is provided to be longer than the inter-pin distance.

In addition, the first and second connection pins 200 and 300 are each provided with a bush member 250 at one end and the other end to have an outer diameter larger than that of the middle portion.

The bush member 250 has the advantage of improving mounting compatibility despite differences in the width of the mounting portion of the excavator boom 10 and the outer diameters of the first and second connecting pins 200 and 300.

That is, the bush member 250 functions to improve mounting compatibility with respect to pin diameter and mounting portion width when the first and second connecting pins 200 and 300 and the excavator boom 10 are mounted and coupled.

In addition, as shown in FIG. 3, the left and right bodies 110 and 120 are connected to the coupling plate 400 when the coupling plate 400 is coupled in one direction to assist in fastening the bolts of the coupling plate 400. ) is formed in a shape corresponding to the shape of the coupling plate 400 on the other side of the left and right bodies 110 and 120 that are not coupled, and a support member provided on the left and right bodies 110 and 120 is further provided.

When described with reference to FIGS. 5 and 6, an adjustment means for adjusting the combined length of the bush member 250 and the second connection pin 300 is further provided.

The adjusting means includes a male threaded portion 310 formed on the outer peripheral surface of both ends of the second connecting pin 300, and the bush so that both ends of the second connecting pin 300 are inserted and the male threaded portion 310 is screwed. It consists of a female thread portion 255 formed on the inner peripheral surface of the member 250.

The adjustment means changes the fastening position of the male thread portion 310 and the female thread portion 255 according to the rotation direction of the bush member 250 to adjust the overall width and length of the second connecting pin 300, It has the advantage of being able to reduce operating noise after the mounting bracket 100 is mounted on the excavator boom 10 by being able to adjust the width to correspond to the width of the excavator boom 10 connection portion.

As shown in FIG. 4, an embodiment of the present invention having this configuration includes the first and second connections formed on the left and right bodies 110 and 120 of the mounting bracket 100 before mounting on the end of the excavator boom 10. The second connection pins 300 are first and second connected to adjust the distance between the pins of the first connection pin 200 and the second connection pin 300 to fit the excavator boom 10 in the balls 122 and 124. One of the balls 410 and 420 is selected and coupled through it.

Next, the bush member 250 is coupled to one end and the other end of the second connection pin 300 to fit the end width of the excavator boom 10.

The bush member 250 can be precisely adjusted to a width corresponding to the mounting portion of the excavator boom 10 by means of an adjustment means whose width is adjusted by a screw fastening method of the male thread portion 310 and the female thread portion 255. do.

Accordingly, the bush member 250 can be mounted even if the pin diameter of the first and second connecting pins (200, 300) suitable for the excavator boom 10 is smaller than the outer diameter of the first and second connecting holes (122, 124), The gap between the bush members 250 can be adjusted to have a width of the mounting portion corresponding to the excavator boom 10, which has the advantage of improving mounting compatibility.

Therefore, in one embodiment of the present invention, the second connection hole 122 is formed at the top and bottom so that the connection position of the second connection pin 300 can be selected, so the connection height displacement of the second connection pin 300 As a result, the distance between the first and second connecting pins 200 and 300 can be adjusted to respond to changes in the dimensions of the excavator boom 10, which has the useful advantage of improving mounting compatibility.

In addition, in one embodiment of the present invention, the bush member 250 is provided at both ends of the first and second connection pins 200 and 300, respectively, so that the first and second connection pins have small pin diameters suitable for the dimensions of the excavator boom 10 ( 200 and 300) can be combined with the mounting bracket 100, which has the useful advantage of improving mounting compatibility between the excavator boom 10 and the mounting bracket 100.

In addition, one embodiment of the present invention further includes an adjustment means for adjusting the spacing of the bush members 250, so that the width of the mounting portion with the excavator boom 10 can be adjusted, and the clearance when mounted and coupled with the excavator boom 10 can be adjusted. It has the advantage of reducing operating noise.

Figures 7 to 11 are diagrams showing another embodiment of the mounting bracket connection structure for an excavator of the present invention, in which a connection plate 105 coupled to the attachment equipment is formed at the bottom, and the upper left and right sides of the connection plate 105 Left and right bodies 110 and 120 are formed in a vertical direction, and a mounting bracket 100 in which first and second connection holes 122 and 124 are drilled at one end and the other end of the left and right bodies 110 and 120, respectively; A first connection pin 200 coupled to penetrate the first connection hole 112 of the left and right bodies 110 and 120; A second connection pin 300 coupled to penetrate the second connection hole 122 of the left and right bodies 110 and 120; and a coupling means for coupling the second connection pin 300 to the second connection hole 122, wherein the coupling means is coupled to inner surfaces of the left and right bodies 110 and 120 facing each other, respectively. A bush cap is formed with a fitting hole 505 through which the second connecting pin 300 passes, and the fitting hole 505 is formed eccentrically to adjust the distance between the pins of the first and second connecting pins 200 and 300 during rotation. It is made up of 500.

As shown in FIG. 7, the second connection hole 122 of another embodiment of the present invention, unlike the second connection hole 122 of the previous embodiment described above, has a circular shape at the upper end of the other end of the left and right bodies 110 and 120. Each is formed one by one.

As shown in FIGS. 7 and 8, the bush cap 500 is formed at a position where the position of the fitting hole 505 to which the second connection pin 300 is coupled is eccentric from the center, and the second connection pin 300 is connected to the bush cap 500. The balls 122 are tightly coupled to the inside and outside of the left and right bodies 110 and 120, respectively.

As a result, the second connection pin 300 is located at a distance d where the center of the second connection pin 300 is eccentric from the center position of the bush cap 500, as shown in FIGS. 10A and 10B. As shown in FIG. 11, the pin-to-pin distance between the first connection pins 200 and the first connection pin 200 approaches or is spaced apart depending on the direction of rotation of the bush cap 500.

In addition, as shown in FIG. 7, the bush cap 500 has a fitting portion 510 at one end fitted into the second connection hole 122 from the inside and outside of the left and right bodies 110 and 120, and At the other end, it is composed of a flange portion 520 that extends outward from the outer periphery of the fitting portion 510 and has a plurality of fastening holes for fastening bolts.

The bush cap 500 is coupled to be fixed to the inside and outside of the other ends of the left and right bodies 110 and 120 as bolts are fastened to the fastening holes formed in the flange portions 520.

The bolt has a structure that is fastened through a fastening hole formed in the left and right bodies 110 and 120 and the flange portion 520 of the bush cap 500.

Referring to FIG. 9, the flange portion 520 of the bush cap 500 is bolted to the inner surfaces of the left and right bodies 110 and 120 facing each other, and the fitting portion 510 has a second connection hole ( 122) and has a structure that is combined to fit within.

Another embodiment of the present invention having this configuration is to rotate the bush cap 500 to adjust the distance between the first and second connection pins 200 and 300, as shown in FIG. 11, the bush cap 500 During the rotation operation, the coupling position of the second connection pin 300 inserted into the fitting hole 505 at an eccentric position can be moved closer to or spaced apart from the first connection pin 200, so that the first and second connection pins ( The distance between pins (200,300) can be adjusted.

In addition, the bush cap 500 can adjust the width gap of the mounting portion of the excavator boom 10 as the fitting portion 510 and the flange portion 520 are coupled to both ends of the second connecting pin 300, respectively. It has the advantage of being able to adjust the pin diameter of the second connection pin 300.

Therefore, in another embodiment of the present invention, the fitting hole 505 is formed eccentrically in the bush cap 500 without the need to form a plurality of second connection holes 122 at the top and bottom as in the previous embodiment described above. By doing so, the distance between the pins of the first connection pin 200 and the second connection pin 300 can be adjusted to be closer or farther apart, which is useful for improving connection compatibility of the mounting bracket 100 depending on the mounting area with the boom. It has an advantage.

Referring to Figures 12 to 15, another embodiment of the present invention shows the width direction spacing of the bush caps 500 respectively coupled to the left and right bodies 110 and 120 to correspond to the change in end width of the excavator boom 10. It is further provided with a width adjustment means 600 for adjusting .

As shown in FIGS. 12 and 13, the width adjustment means 600 has a plurality of first fastening holes 610 formed in the flange portion 520 of the bush cap 500, and one end of the first fastening hole 600 is connected to the first fastening hole 610. The adjustment bolt 620 is fastened to the ball 610 and is coupled to penetrate the left and right bodies 110 and 120, and the flange portion 520 of the bush cap 500 in contact with the excavator boom 10 is outside. A fixing nut 630 screwed to the other end of the adjustment bolt 620 on the outside of the left and right bodies 110 and 120 to prevent it from being pushed in the direction, and the fitting portion 510 of the bush cap 500 ) It is formed on the outside and is provided with a plurality of second fastening holes 640 that are coupled to the pull-out jig 700 for the external pull-out operation of the bush cap 500.

The adjustment bolt 620 has a structure in which male threads for screw fastening are formed at one end and the other end, and no threads are formed in the middle portion penetrating the left and right bodies 110 and 120.

After the end of the excavator boom 10 enters the inside between the left and right bodies 110 and 120, the width adjustment means 600 operates according to the difference in thick and thin end widths of the boom 10, and the bush cap. (500) is moved in the inner and outer width directions and the bush cap 500 is brought into contact with both outer surfaces of the boom pole 10 to provide contact support to suppress the flow of the boom pole 10 in the width direction.

The width adjustment means 600 further includes a washer member 650 disposed between the fixing nut 630 and the outer surfaces of the left and right bodies 110 and 120.

The washer member 650 adjusts the gap between the outer surface of the left and right bodies 110 and 120 and the fixing nut 630, so that when the adjustment bolt 620 and the left and right bodies 110 and 120 are coupled through through, one end and Ensure that the male thread formed on the other end does not interfere with the left and right bodies (110, 120).

When the end of the excavator boom 10 is relatively thick, the width adjustment means 600 is a bush cap 500 in close contact with the inner surfaces of the left and right bodies 110 and 120, as shown in FIG. 12. ) of the flange portion 520 is in contact with the outer surface of the excavator boom 10, so that the flange portion 520 of the bush cap 500 is connected to the inner surfaces of the left and right bodies 110 and 120 and the excavator boom 10. It is interposed between the outer surfaces of.

On the other hand, when the end of the excavator boom 10 is relatively thin, as shown in FIG. 13, the excavator is used to narrow the width direction gap between each bush cap 500 coupled to the left and right bodies 110 and 120. By moving to the outer surface of the boom 10, the flange portion 520 of the bush cap 500 is brought into contact with the outer surface of the excavator boom 10 to prevent the excavator boom 10 from moving in the left and right width directions. You can.

At this time, since the bush cap 500 is coupled by the adjustment bolt 620, the flange portion 520 of the bush cap 500 is adjusted by pushing the adjustment bolt 620 from the outside of the left and right bodies 110 and 120. can be brought into contact with the outer surface of the excavator boom (10).

In addition, after the flange portion 520 of the bush cap 500 is in contact with the excavator boom 10, the fixing nut 630 is connected to the other side of the adjustment bolt 620 on the outside of the left and right bodies 110 and 120. The adjustment bolt 620 is fixed to the thread formed at the end to prevent the adjustment bolt 620 from sliding outward.

14 and 15 are diagrams showing a pull-out jig 700 that assists in pulling out the bush cap 500 of the present invention in the outward direction. The pull-out jig 700 is coupled to penetrate the jig body 705 and has a plurality of ends. A fastening bolt 710 fastened to the second fastening hole 640, and a support rod 720 fixed to the jig body 705 and whose ends are supported by contacting the outer surfaces of the left and right bodies 110 and 120, and a handle 730 that protrudes outside the jig body 705 and is held by the operator's hand.

As shown in FIG. 15, the support rod 720 has a double structure of an outer rod 724 and an inner rod 722 at one end that contacts the outer surfaces of the left and right bodies 110 and 120, and the The inner rod 722 is coupled to be inserted into the outer rod 724, and has a structure in which an elastic spring 725 is built inside to elastically support the outer rod 724.

When the pull-out jig 700 is pulled outward, the elastic spring 725 moves the ends of the outer bar 724 to the outer surfaces of the left and right bodies 110 and 120 even if the overall length of the support bar 720 becomes longer. It has an elastic support function so that it comes into contact with.

Due to this, the support rod 720 supports the jig body 705 on the outer surfaces of the left and right bodies 110 and 120 and allows the pull-out jig 700 to be easily pulled outward.

Also, when moving the position of the bush cap 500 from the inside to the outside again, as shown in FIG. 14, the fastening state of the adjustment bolt 620 and the fixing nut 630 is released, and the bush cap is After fastening the fastening bolt 710 penetrating the pull-out jig 700 to the second fastening hole 640 formed on the outer surface of the fitting portion of (500), the pull-out jig 700 is pulled to move outward. The bush cap 500 can be moved outward to widen the gap between the bush caps 500 coupled to the left and right bodies 110 and 120, respectively.

Accordingly, in another embodiment of the present invention, the spacing between the bush caps 500 coupled to the left and right bodies 110 and 120 is adjusted using the width adjustment means 600 to correspond to the change in the end width of the excavator boom 10. By allowing the spacing to be adjusted, the boom bar 10 of various types of excavators can be easily coupled to the mounting bracket, which has the advantage of improving coupling compatibility.

As such, in the detailed description of the present invention, specific embodiments have been described, but of course, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by the claims and equivalents thereof as well as the claims described later.

In other words, the present invention described above is not limited to the specific preferred embodiments described above, and anyone skilled in the art to which the invention pertains can use it without departing from the gist of the present invention as claimed in the claims. Of course, various modifications and implementations are possible, and such modifications are within the scope of the claims.

10: Excavator boom 100: Mounting bracket
105: Connection plate 110,120: Left, right body
112: first connection hole 122: second connection hole
200: first connection pin 250: bush member
255: female thread 300: second connection pin
310: Male thread 400: Coupling plate
410,420: 1st and 2nd joining holes 500: Bush cap
505: Fitting hole 510: Fitting part
520: Flange portion 600: Width adjustment means
610: first fastening hole 620: adjustment bolt
630: Fixing nut 640: Second fastening hole
650: Washer member 700: Pull-out jig

Claims (7)

A connecting plate 105 coupled with the attachment equipment is formed at the bottom, and left and right bodies 110 and 120 are formed in a vertical direction on the upper left and right sides of the connecting plate 105, and the left and right bodies ( a mounting bracket 100 having first and second connection holes 122 and 124 drilled at one end and the other end, respectively;
A first connection pin 200 coupled to penetrate the first connection hole 112 of the left and right bodies 110 and 120;
A second connection pin 300 coupled to penetrate the second connection hole 122 of the left and right bodies 110 and 120; and
Provided with a coupling means for coupling the second connection pin (300) to the second connection hole (122),
The second connection hole 122 is formed so that the second connection pin 300 is selectively coupled to one of the upper and lower positions in order to adjust the distance between the first connection pin 200 and the second connection hole 122.
The coupling means is coupled to the left and right bodies 110 and 120, respectively, and includes a coupling plate 400 with first and second coupling holes 410 and 420 formed at the top and bottom to selectively penetrate the second connection pin 300. A mounting bracket connection structure for an excavator, characterized in that it is provided. In claim 1,
A mounting bracket connection structure for an excavator, characterized in that the first and second connection pins (200, 300) are each provided with a bush member (250) at one end and the other end having an outer diameter larger than the outer diameter of the middle portion. In claim 2,
Further comprising an adjustment means for adjusting the combined length of the bush member 250 and the second connection pin 300,
The adjustment means includes a male thread portion 310 formed on the outer peripheral surface of both ends of the second connecting pin 300,
A mounting bracket connection for an excavator, characterized in that it consists of a female thread portion 255 formed on the inner peripheral surface of the bush member 250 so that both ends of the second connection pin 300 are inserted and the male thread portion 310 is screwed. struct. A connecting plate 105 coupled with the attachment equipment is formed at the bottom, and left and right bodies 110 and 120 are formed in a vertical direction on the upper left and right sides of the connecting plate 105, and the left and right bodies ( a mounting bracket 100 having first and second connection holes 122 and 124 drilled at one end and the other end, respectively;
A first connection pin 200 coupled to penetrate the first connection hole 112 of the left and right bodies 110 and 120;
A second connection pin 300 coupled to penetrate the second connection hole 122 of the left and right bodies 110 and 120; and
Provided with a coupling means for coupling the second connection pin (300) to the second connection hole (122),
The coupling means is coupled to the left and right bodies 110 and 120, respectively, and a fitting hole 505 through which the second connecting pin 300 passes is formed, and when rotating, the pins of the first and second connecting pins 200 and 300 are formed. A mounting bracket connection structure for an excavator, characterized in that it is provided with a bush cap (500) in which the fitting hole (505) is formed eccentrically to adjust the distance gap. In claim 4,
The second connection pin 300 has a bush member 250 formed at one end and the other end having an outer diameter larger than the outer diameter of the middle portion,
A male thread portion 310 formed on the outer peripheral surface of both ends of the second connection pin 300,
Mounting for an excavator, characterized in that it further includes a female thread portion 255 formed on the inner peripheral surface of the bush member 250 so that both ends of the second connection pin 300 are inserted and the male thread portion 310 is screwed. Bracket connection structure. In claim 4,
It is further provided with a width adjustment means 600 for adjusting the width direction spacing of the bush caps 500 respectively coupled to the left and right bodies 110 and 120 to correspond to changes in the end width of the excavator boom 10,
The width adjustment means 600 includes a plurality of first fastening holes 610 formed in the flange portion 520 of the bush cap 500,
An adjustment bolt 620 whose one end is fastened to the first fastening hole 610 and is coupled to penetrate the left and right bodies 110 and 120,
To prevent the flange portion 520 of the bush cap 500 in contact with the excavator boom 10 from being pushed outward, the adjustment bolt 620 is adjusted from the outside of the left and right bodies 110 and 120. A fixing nut 630 screwed to the end, and
Characterized by being provided with a plurality of second fastening holes 640 formed on the outside of the fitting portion 510 of the bush cap 500 and coupled to the pull-out jig 700 for the external pull-out operation of the bush cap 500. A mounting bracket connection structure for an excavator. In claim 6,
The width adjustment means 600 further includes a washer member 650 disposed between the fixing nut 630 and the outer surfaces of the left and right bodies 110 and 120. struct.

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