KR20210120159A - Loader device to keep bucket horizontality - Google Patents

Abstract

In accordance with an embodiment of the present invention, a loader device, in which a pair of arms are coupled to a pair of booms to be linked with each other, and a bucket is installed on the front of the arms, and of which the vertical angle can be adjusted by boom actuators installed on the booms and bucket actuators installed on the arms, comprises: a fixing bracket for connecting the booms to a vehicle; boom connecting parts formed on the fixing bracket to couple ends of the booms to the fixing bracket so that the booms are rotatable; and rotating cams connected to the other ends of the booms, connected to ends of the bucket actuators, and rotatably coupled to the inside of link connecting parts to which the booms and the arms are connected. The booms each include: a boom link having one end pivotally connected to the boom connecting part and the other end connected to the rotating cam; and a boom case having one end pivotally connected to the boom connecting part and the other end opened to be rotatable together with the boom link, and for preventing the boom link from being exposed to the outside. Therefore, the loader device enables the bucket to be raised and lowered while being leveled.

Description

{Loader device to keep bucket horizontality}

The present invention relates to a loader device, and more particularly, to a loader device for maintaining a level of a bucket that can maintain a level with the ground when a bucket on which a load is loaded is raised and lowered.

In general, construction equipment such as tractors and agricultural machinery vehicles, that is, heavy equipment vehicles, are equipped with a loader device including a bucket in the front, and are put into various construction works such as soil excavation work, rock excavation work, and concrete building crushing work.

A loader is also called a loader. Instead of a bulldozer's beto plate, a bucket is attached, and it is operated with a hydraulic device to dig frequently and to load the excavated earth and sand into other transport machines.

In this regard, Patent Document 1 discloses that a pair of arms are coupled to be linked to a pair of booms, and a first actuator installed on the boom arm with a working device toward the front of the arm and a second actuator installed on the arm provide a vertical angle. Adjustment is possible, and the reinforcing member is rotatably connected to the lower part of the rotating plate inserted into the boom and rotatably coupled to the inside of the link connection part where the device bracket, the boom and the arm are connected, and the first actuator is the device. The lower part of the bracket is rotatably connected to the front lower part of the boom, and the second actuator is rotatably connected to the upper part of the rotary plate and the connecting bracket that is rotatably connected to the working machine and the arm, and by the operation of the first actuator, the boom In the loader structure for adjusting the angle of the bucket, characterized in that it is configured to prevent bending of the reinforcing member while the rotating plate rotates when the position is adjusted, the rotating plate has a half-moon shape, and the upper and lower ends have first and second insertion incision grooves, respectively Formed, the second cylinder of the second actuator is inserted into the first incision groove and configured to be rotatably coupled, and one end of the reinforcing member is inserted into the second incision groove to be rotatably coupled, and the front lower part of the boom stand is configured to be rotatably coupled to the first cylinder of the first actuator, and the center of the rotary plate is configured to be rotatably coupled to the link connection part where the boom and arm overlap, and the reinforcing member is recessed so that the central lower surface is curved inward. A loader structure for adjusting the angle of the bucket is provided, characterized in that the curvature surface is formed to increase the response force and the stress dispersion force with respect to the bending stress.

However, in the case of Patent Document 1, when the boom and arm are rotated by the first actuator so that the working machine on which the load is loaded is lifted from the ground, the second actuator rotates greatly on the rotating plate or the rotating plate, so that the working device such as a bucket is horizontal with the ground. There was a risk of rotation without being able to achieve .

That is, there was a fear that the load may fall.

The matters described as the above background art are only for improving the understanding of the background of the present invention, and should not be taken as acknowledging that they correspond to the prior art already known to those of ordinary skill in the art.

Patent Document 1: Domestic Registered Patent No. 10-1461113 (Registered on November 6, 2014)

The present invention has been devised to solve such a problem, and an object of the present invention is to provide a loader device for maintaining the level of the bucket that allows the bucket to be lifted while maintaining a horizontal state.

In order to achieve the above object, the loader device according to an embodiment of the present invention includes a pair of arms coupled to a pair of booms and a link operation, a bucket is installed on the front of the arms, and a boom actuator installed on the booms. and a loader device for allowing vertical angle adjustment by a bucket actuator installed on the arm, comprising: a fixing bracket for connecting the boom to a vehicle; a boom connecting portion formed on the fixing bracket and coupling one end of the boom with the fixing bracket so that the boom is rotatable; a rotation cam connected to the other end of the boom, one end of the bucket actuator is connected, and a rotation cam rotatably coupled to the inside of the link connecting portion to which the boom and arm are connected, wherein one end of the boom is pivoted to the boom connecting portion A boom link that is rotatably connected, the other end is connected to the rotary cam, and one end is pivotally connected to the boom connection part rotatably with the boom link, and the other end is opened and the boom link is not exposed to the outside. It includes a boom case.

The boom connection part is fixed to the fixing bracket, a first hinge pin hole connected by a first hinge pin so that the boom link is rotatable, and a second hinge connected by a second hinge pin so that the boom case is rotatable. It may include a pin hole.

The boom case may be inserted into the fixing bracket while pivoting.

The rotation cam is connected to a third hinge pin hole to which the boom link is connected by a third hinge pin, a fourth hinge pin hole to which one end of the bucket actuator is connected by a fourth hinge pin, and a fifth hinge pin to the arm. It may include a fifth hinge pin hole.

The rotation cam may be pivotally rotated around the fifth hinge hole as the third hinge hole, the fourth hinge hole, and the fifth hinge hole are located at vertices of a triangle.

The rotating cam may be partially inserted into the arm while pivoting.

According to the loader device according to the present invention, the following effects are obtained.

When adjusting the position of the boom, the rotation cam rotates to adjust the position, thereby preventing excessive stress on the boom and arm.

By preventing the boom link from being exposed to the outside, it is possible to prevent corrosion and damage by the external environment.

In addition, since the rotating cam is not exposed to the outside depending on the operating state, there is an effect of preventing contamination and making the appearance beautiful.

1 is a side view showing a loader device according to an embodiment of the present invention.
2 is a cross-sectional view of a loader device according to an embodiment of the present invention.
3 is a cross-sectional view showing a state in which the loader device according to an embodiment of the present invention is raised to an intermediate level.
4 is a cross-sectional view showing a state in which the loader device according to an embodiment of the present invention is finally raised.
5 is an enlarged cross-sectional view of the fixing bracket portion of the loader device according to an embodiment of the present invention.
6 is an enlarged cross-sectional view of the fixing bracket portion when the loader device according to an embodiment of the present invention is raised.
7 is an enlarged perspective view of a fixing bracket portion of the loader device according to an embodiment of the present invention.
8 is an enlarged perspective view of a rotating cam portion of the loader device according to an embodiment of the present invention.
9 is an enlarged cross-sectional view of the rotation cam of the loader device according to an embodiment of the present invention.

The terminology used herein is for the purpose of referring to specific embodiments only, and is not intended to limit the invention. As used herein, the singular forms also include the plural forms unless the phrases clearly indicate the opposite. The meaning of "comprising," as used herein, specifies a particular characteristic, region, integer, step, operation, element and/or component, and other specific characteristic, region, integer, step, operation, element, component, and/or group. It does not exclude the existence or addition of

Although not defined otherwise, all terms including technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. Commonly used terms defined in the dictionary are additionally interpreted as having a meaning consistent with the related technical literature and the presently disclosed content, and unless defined, they are not interpreted in an ideal or very formal meaning.

Hereinafter, a loader device according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a side view showing a loader device according to an embodiment of the present invention. 2 is a cross-sectional view of a loader device according to an embodiment of the present invention.

1 and 2, the loader device according to an embodiment of the present invention is configured such that a pair of booms 20 and a pair of arms 30 are coupled to be linked. The bucket 70 is installed on the front of the arm 30, and the vertical angle can be adjusted by the boom actuator 40 installed on the boom 20 and the bucket actuator 50 installed on the arm 30. .

In addition to the above configuration, the loader device according to an embodiment of the present invention includes a fixing bracket 10 , a boom connection part 11 , and a rotation cam 60 .

5 is an enlarged cross-sectional view of the fixing bracket portion of the loader device according to an embodiment of the present invention. 6 is an enlarged cross-sectional view of the fixing bracket portion when the loader device according to an embodiment of the present invention is raised. 7 is an enlarged perspective view of a fixing bracket portion of the loader device according to an embodiment of the present invention.

5 to 6 , the fixing bracket 10 is mounted in a pair on a heavy equipment vehicle 1 such as a tractor that moves along the ground. The fixing bracket 10 may be fixed to the vehicle by coupling members such as pins 17 and 18 for fixing to the equipment. The number of pins for fixing can be changed according to the state.

The boom stand 20 and the boom actuator 40 are coupled to the fixing bracket 10 . The boom 20 includes a boom link 21 that is mechanically connected to maintain the level of the bucket 70 and a boom case 22 to prevent the boom link 21 from being exposed to the outside.

The boom link 21 connected to the fixing bracket 10 is connected via the boom connection part 11 so as to be rotatable. The boom connection unit 11 includes a first hinge hole 13 ′ so that one end of the boom link 21 can be connected by the first hinge pin 13 , and one end of the boom case 22 has a second hinge pin. A second hinge hole 14' is included so as to be connected by (14). The boom connection part 11 may include a fixing part 11 fixed to the fixing bracket 11 and fixing holes 15 ′ and 16 ′ fixed by coupling of the pins 15 and 16 . The boom connection part 11 serves to pivotally rotate the boom link 21 and the boom case 22 in the fixing bracket 11 through a hinge coupling. At this time, the first hinge hole 13 ′ is coupled so that one end of the boom link 21 is rotatably coupled by the first hinge pin 13 so that the boom case 22 also rotates while the boom link 21 rotates. Thus, the boom case 22 can be inserted into the fixing bracket 10 . The second hinge hole 14' is a configuration for rotatably coupling the boom case 22 into which the second hinge pin 14 is inserted.

In addition, the boom actuator 40 is connected to the fixing bracket 10 so that the boom 20 can rotate. The boom actuator 40 includes a cylinder 41 and a rod 42 , and one side of the rod 41 is connected to the fixing bracket 10 so as to be rotatable by a hinge pin. Therefore, due to the difference in length between the rod 41 and the cylinder 42 of the boom actuator 40, the boom 20 having a constant length is pivotally rotated about the connection portion of the fixing bracket as an axis. The boom actuator 40 may use a hydraulic cylinder device in general, but any equipment may be used as long as the length can be changed.

When the boom 20 is rotated by the operation of the boom actuator 40, the position of the bucket 70 connected to the arm 30 is changed and the horizontal of the bucket 70 is collapsed. If the bucket 70 is not leveled, the contents in the bucket 70 are poured, so the loader device must keep the bucket 70 level.

In the present invention, the boom 20 and the bucket actuator 50 are connected to the rotating cam 60 to maintain the horizontal level of the bucket 70 by rotation between the boom 20 and the bucket actuator 50 .

8 is an enlarged perspective view of a rotating cam portion of the loader device according to an embodiment of the present invention. 9 is an enlarged cross-sectional view of the rotation cam of the loader device according to an embodiment of the present invention.

Referring to FIGS. 8 and 9 , the rotation cam 60 is rotatably installed between the boom 20 and the bucket actuator 50 . The rotating cam 60 is a third hinge hole 61', a fourth hinge hole 62', a fifth hinge so as to be rotatably connected to the boom link 21, the bucket actuator 50, and the arm 30. hole 63'. The third hinge hole 61 ′ is connected to the boom link 21 by a third hinge pin 61 . One end of the boom link 21 is connected to the fixing bracket 10 , and the other end is rotatably connected to the rotating cam 60 . The fourth hinge hole 62 ′ is rotatably connected to the cylinder 52 of the bucket actuator 50 by the fourth hinge pin 62 . The fifth hinge hole 63 ′ is rotatably connected to the arm 30 by a fifth hinge pin 63 . By the operation of the boom actuator 40 and the bucket actuator 50, the rotation cam 60 can rotate with the fifth hinge pin 63 as a rotation axis. At this time, the third hinge hole 61', the fourth hinge hole 62', and the fifth hinge hole 63' are positioned at the vertices of the triangle to pivot around the fifth hinge hole 63'. do.

A part of the rotation cam 60 may be exposed or inserted to the outside by rotation inside the arm 30 . That is, when the fifth hinge pin 63 rotates in the direction of the boom 20 , it can be inserted into the arm 30 , and when it rotates in the opposite direction, it can be exposed to the outside of the arm 30 . can be formed with

On the opposite side of the arm 30, the bucket bracket 55 is rotatably installed so that the bucket 70 can be installed. A first link 53 is rotatably installed in the bucket bracket 55 , and the first link 53 is rotatably installed at one end of the rod 51 of the bucket actuator 50 . A second link 54 is rotatably connected to a portion to which the first link 53 is connected, and an opposite portion of the second link 54 is rotatably connected to the arm 30 . Therefore, the angle of the bucket bracket 55 can be adjusted by the operation of the becket actuator 50, and it is possible to adjust the angle of the bucket 70 depending on the situation, and the bucket 70 is moved by the boom actuator 40. When ascending, it is possible to maintain the level of the bucket (70).

The operation and effect of the loader device according to an embodiment of the present invention as described above will be described as follows.

2 is a cross-sectional view of a loader device according to an embodiment of the present invention. 3 is a cross-sectional view showing a state in which the loader device according to an embodiment of the present invention is raised to an intermediate level. 4 is a cross-sectional view showing a state in which the loader device according to an embodiment of the present invention is finally raised. 5 is an enlarged cross-sectional view of the fixing bracket portion of the loader device according to an embodiment of the present invention.

2 to 5, the fixing bracket 10 of the loader device is coupled to the front side of the vehicle 1 so that the entire loader device is lifted upward or lowered using the boom actuator 40. The operation of rotating is performed, and the operation of rotating the bucket 70 up and down using the bucket actuator 50 is performed.

At this time, when the rod 41 of the boom actuator 40 is pulled out/inserted from the cylinder 42 to adjust the position of the boom 20, the boom 20 is raised or lowered while connected to the fixing bracket 10. is rotated

At this time, when the boom link 21 is coupled to the boom connection part 11 and the boom stand 20 rotates with the bullcase 22 coupled to the fixing bracket 10, a part of the boom case 22 is fixed. The bracket 10 may be inserted into the inner side. In this case, it is possible to prevent the boom link 21 from being exposed to the outside.

As such, when the boom 20 is rotated upward, the rotation cam 60 connected to the boom link 21 rotates in the bucket direction (clockwise) and is exposed to the outside of the arm 30 .

Conversely, when the boom 20 is rotated downward, the rotation cam 60 connected to the boom link 21 rotates in the boom direction (counterclockwise) and is inserted into the arm 30 .

This, the boom position adjustment operation of the boom actuator can be adjusted so that the work can be loaded therein because the bottom surface of the bucket can be maintained horizontally with the working surface after the vertical height of the bucket is adjusted by the operation of the boom actuator. By such a movement, when the position of the boom is adjusted, the rotation cam rotates while the position is adjusted, thereby preventing excessive stress from being applied to the boom and arm. By preventing the boom link from being exposed to the outside, it is possible to prevent corrosion and damage by the external environment. In addition, since the rotating cam is not exposed to the outside depending on the operating state, there is an effect of preventing contamination and making the appearance beautiful.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can realize that the present invention can be embodied in other specific forms without changing its technical spirit or essential features. you will be able to understand

Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention. .

10: fixing bracket 20: boom stand
30: arm 40: boom actuator
50: bucket actuator 60: rotation cam
70: bucket

Claims (6)

A pair of arms are coupled to operate a link with a pair of booms, a bucket is installed on the front side of the arm, and vertical angle adjustment is possible by a boom actuator installed on the boom and a bucket actuator installed on the arm A loader device comprising:
a fixing bracket for connecting the boom to the vehicle; a boom connecting portion formed on the fixing bracket and coupling one end of the boom with the fixing bracket so that the boom is rotatable; A rotary cam connected to the other end of the boom, one end of the bucket actuator is connected, and a rotation cam rotatably coupled to the inside of the link connecting portion to which the boom and arm are connected;
One end of the boom is pivotally connected to the boom connecting portion, and the other end is rotatably connected to the boom connecting portion with a boom link and the boom link connected to the rotating cam, and one end is pivotally connected to the boom connecting portion, and the other end is open. and a loader device including a boom case that prevents the boom link from being exposed to the outside. The method according to claim 1,
The boom connection
It is fixed to the fixing bracket and includes a first hinge pin hole connected by a first hinge pin so that the boom link is rotatable and a second hinge pin hole connected by a second hinge pin so that the boom case is rotatable. loader device. The method according to claim 1,
The boom case is a loader device, characterized in that it is inserted into the fixing bracket while pivoting. The method according to claim 1,
The rotation cam is connected to a third hinge pin hole to which the boom link is connected by a third hinge pin, a fourth hinge pin hole to which one end of the bucket actuator is connected by a fourth hinge pin, and a fifth hinge pin to the arm. A loader device including a fifth hinge pin hole. 5. The method according to claim 4,
The rotary cam is a loader device, characterized in that the third hinge hole, the fourth hinge hole, and the fifth hinge hole are located at the vertices of the triangle to pivotally rotate around the fifth hinge hole. 6. The method of claim 5,
The rotary cam is a loader device, characterized in that a part is inserted into the arm while pivoting.

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