AU2005245747B2

AU2005245747B2 - Construction equipment with excavation and loading function

Info

Publication number: AU2005245747B2
Application number: AU2005245747A
Authority: AU
Inventors: Il-Hwan Joo
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-05-21
Filing date: 2005-05-20
Publication date: 2009-03-19
Anticipated expiration: 2025-05-20
Also published as: EP1756371A4; KR100606506B1; AU2005245747A1; WO2005113903A1; EP1756371A1; KR20050111296A; US20080075571A1

Description

P.XPERVARR3OI329I7 Ii Ur,,doc-13/fllflI -1- Description CONSTRUCTION EQUIPMENT WITH EXCAVATION AND LOADING FUNCTION Technical Field The present invention relates to a construction equipment, and more particularly, to a construction equipment in which excavation and loading functions can be performed by one equipment.

Background Art Generally, a construction equipment such as an excavator and a loader is used to excavate, convey, and load earth and sand in the construction site. The excavator is to excavate or load earth and sand or rock during earthwork. The loader is to load excavated earth and sand, aggregate, crushed rock into a conveyer. The excavator and the loader work differently from each other in view of kinematics. In other words, since the excavator acts using pulling power while the loader acts using pushing power, they have different structures from each other. Therefore, both the excavator and the loader are used for excavation and conveyance of earth and sand in the construction site.

However, if such equipments, the excavator and the loader are used together, drawbacks occur in that the excessive expenses are required and the volume of the equipments occupied in the working field becomes great. Therefore, there are suggested multi-functional construction equipments that can carry out various functions using single equipment. However, the multi-functional construction equipments fail to satisfy workers for some reasons. In other words, most of the multi- functional construction equipments are respectively provided with an excavator, a loader, and a forklift truck at the front and the rear. Since the excavator, the loader, and the forklift truck are all provided in one main body of the construction equipment, the weight of the construction equipment greatly increases and also the size of the main body that supports the excavator, the loader, and the forklift truck relatively increases. For these reasons, a problem essentially occurs with respect to unnecessary increase of the volume of the construction equipment or its balance. Problems occur in that the respective equipments such as P 'OPER\MRF (,291I I pa doc-l Ii /I)9 -2the excavator, the loader, and the forklift truck do not work satisfactorily because they have different structures in view of kinematics.

Summary of the Invention Accordingly, the present invention provides a construction machine having excavation and loading functions, the construction machine comprising an excavating and loading apparatus and a support structure from which the apparatus is supported, the support structure being mobile on the ground, wherein the apparatus further includes: a mounting defined on the support structure; a boom, one end of which is rotatably connected to the mounting; a cylinder for rotating the boom ("the boom cylinder"), one end of the boom cylinder being rotatably connected to the mounting and the other end of the boom cylinder being rotatably connected to the boom; a first arm, one end of which is rotatably connected to the other end of the boom; a cylinder for rotating the first arm ("the first arm cylinder"), one end of the first arm cylinder being rotatably connected to the boom and the other end of the first arm cylinder being rotatably connected to the first arm; a second arm, one end of which is rotatably connected to the other end of the first arm; a cylinder for rotating the second arm ("the second arm cylinder"), one end of the second arm cylinder being rotatably connected to the first arm and the other end of the second arm cylinder being rotatably connected to the second arm; a bucket holder rotatably connected to the other end of the second arm; a cylinder for rotating the bucket holder and thereby a bucket when held by the bucket holder ("the bucket cylinder), one end of the bucket cylinder being rotatably connected to the second arm and the other end of the bucket cylinder being rotatably connected to the bucket holder; a hole provided in the mounting and a hole provided in the boom, which are arranged to align at a predetermined rotational position of boom relative to the mounting whereupon they together define a first pin hole which is able to receive a P\OPERVMRiIAI32917 I 0 pdoc-13/01/2,9 -3pin to lock the boom rotationally with respect to the mounting, thereby rendering the boom cylinder inoperable; a further hole provided in the boom and a hole provided in the first arm, which are arranged to align at a predetermined rotational position of the first arm relative to the boom whereupon they together define a second pin hole which is able to receive a pin to lock the first arm rotationally with respect to the boom, thereby rendering the first arm cylinder inoperable; and a further hole provided in the first arm and a hole provided in the second arm, which are arranged to align at a predetermined rotational position of the second arm relative to the first arm whereupon they together define a third pin hole which is able to receive a pin to lock the second arm rotationally with respect to the first arm, thereby rendering the second arm cylinder inoperable, the apparatus being configured such that: insertion of a pin into the second pin hole enables the machine to perform the excavation function when a bucket for excavation is held by the bucket holder; and insertion, instead, of pins into the first and third pin holes enables the apparatus to perform the loading function when a bucket for loading is held by the bucket holder.

Embodiments of the invention provide a construction equipment in which excavation and loading functions can be performed by one equipment without any degradation of performance to remarkably reduce the expenses of the equipment and its size.

Since excavation and loading functions can be performed using single equipment, it is possible to remarkably reduce the expenses of the equipment and its size. Also, it can be made possible to easily perform excavation, hardening and conveyance of earth and sand without any degradation of performance of the equipment.

PNOPERWIRR3)132911 ag spadoo-.3A/0209 -4- Brief Description of the Drawings The above aspects and features of the present invention will be more apparent by describing certain embodiments of the present invention with reference to the accompanying drawings, in which: FIG. 1 is a perspective view illustrating a construction equipment having excavation and loading functions according to a preferred embodiment of the present invention; [11] FIG. 2 is a side view illustrating a construction equipment having excavation and loading functions according to a preferred embodiment of the present invention; [12] FIG. 3 is a side view illustrating a construction equipment having excavation and loading functions, used as an excavator according to one mode of operation of a preferred embodiment of the present invention; [13] FIG. 4 is an enlarged perspective view illustrating a second fixed pin hole of the construction equipment having excavation and loading functions of FIG. 3; [14] FIG. 5 is a state view illustrating use of the construction equipment having excavation and loading functions of FIG. 3; FIG. 6 is a side view illustrating a construction equipment having excavation and loading functions, used as a loader according to another mode of operation of a preferred embodiment of the present invention; [16] FIG. 7 is an enlarged perspective view illustrating a first fixed pin hole of the construction equipment having excavation and loading functions of FIG. 6; [17] FIG. 8 is an enlarged perspective view illustrating a third fixed pin hole of the construction equipment having excavation and loading functions of FIG. 6; and [18] FIG. 9 is a state view illustrating use of the construction equipment having excavation and loading functions of FIG. 6.

P:OPERMRR30I329I7 I, a SPdoc- I 3101/2(X)9 -4A- [19] Detailed Description of the Preferred Embodiment(s) Preferred embodiments of the invention provide a construction equipment, in the form of a construction machine, having excavation and loading functions, which includes work equipment, in the form of an excavating and loading apparatus, comprised of at least one link member, the link member being connected by a hinge and provided with fixed pin holes, provided at a predetermined position above a main equipment, in the form of a support structure, traveled by a crawler or a wheel, so as to be used as an excavator and a loader.

[21] The work equipment includes a pivot portion rotatably provided at an upper portion of the main equipment, a boom rotatably provided up and down as its one end is rotatably fixed to a predetermined position of the pivot portion, a boom cylinder provided to rotate the boom within a stroke of a predetermined length as its one end is fixed to a predetermined position of the pivot portion and its other end is rotatably fixed to a predetermined position of the boom, a first arm rotatably provided up and down as its one end is rotatably fixed to a predetermined position of the boom, a first arm cylinder provided to rotate the first arm within a stroke of a predetermined length as its one end is rotatably fixed to a predetermined position of the boom and its other end is rotatably fixed to a predetermined position of the first arm, a second arm rotatably provided up and down as its one end is rotatably fixed to a predetermined position of the first arm, a second arm cylinder provided to rotate the second arm within a stroke of a predetermined length as its one end is fixed to a predetermined position of the first arm and its other end is rotatably fixed to a predetermined position of the second arm, a bucket holder rotatably provided up and down as its one end is rotatably fixed to a predetermined position of the second arm, a bucket cylinder provided to rotate the bucket holder within a stroke of a predetermined length as its one end is fixed to a predetermined position of the second arm and its other end is fixed to the bucket holder, an excavating bucket of which one end is fixed to a predetermined position of the bucket holder and the other end is rotatably fixed to the bucket cylinder at a predetermined angle, a first fixed pin hole formed to communicate P:\OPER.MRFn1)[32917 IsIspdoc.13/01 2W9 -4B with a predetermined position of the pivot portion and a predetermined position below the boom, a second fixed pin hole formed to communicate with a predetermined position above the boom and a predetermined position below the first arm, a third fixed pin hole formed to communicate with a predetermined position above the first arm and a predetermined position below the second arm, and a first fixed pin inserted into the second fixed pin hole to control the operation of the first cylinder.

[22] The work equipment includes a pivot portion rotatably provided at an upper portion of the main equipment, a boom rotatably provided up and down as its one end is rotatably fixed to a predetermined position of the pivot portion, a boom cylinder provided to rotate the boom within a stroke of a predetermined length as its one end is fixed to a predetermined position of the pivot portion and its other end is rotatably fixed to a predetermined position of the boom, a first arm rotatably provided up and down as its one end is rotatably fixed to a predetermined position of the boom, a first arm cylinder provided to rotate the first arm within a stroke of a predetermined length as its one end is rotatably fixed to a predetermined position of the boom and its other end is rotatably fixed to a predetermined position of the first arm, a second arm rotatably provided up and down as its one end is rotatably fixed to a predetermined position of the first arm, a second arm cylinder provided to rotate the second arm within a stroke of a predetermined length as its one end is fixed to a predetermined position of the first arm and its other end is rotatably fixed to a predetermined position of the second arm, a bucket holder rotatably provided up and down as its one end is rotatably fixed to a predetermined position of the second arm, a bucket cylinder provided to rotate the bucket holder within a stroke of a predetermined length as its one end is fixed to a predetermined position of the second arm and its other end is fixed to the bucket holder, a loading bucket of which one end is fixed to a pre- determined position of the bucket holder and the other end is rotatably fixed to the bucket cylinder at a predetermined angle, a first fixed pin hole formed to communicate with a predetermined position of the pivot portion and a predetermined position below the boom, a second fixed pin hole formed to communicate with a P:OPERMRF 301I32917 I spadoc-13/OI/20W9 -4Cpredetermined position above the boom and a predetermined position below the first arm, a third fixed pin hole formed to communicate with a predetermined position above the first arm and a predetermined position below the second arm, a second fixed pin inserted into the first fixed pin hole to control the operation of the boom cylinder, and a third fixed pin inserted into the third fixed pin hole to control the operation of the second arm cylinder.

[23] Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

[24] FIG. 1 is a perspective view illustrating a construction machine ("construction equipment") having excavation and loading functions, and FIG. 2 is a side view illustrating the construction equipment having excavation and loading functions according to the present invention.

As shown in FIG. 1 and FIG. 2, a mounting in the form of a pivot portion is rotatably provided at an upper portion of a support structure or "main equipment" 10 traveled by a crawler or a wheel. A boom 30 is WO 2005/113903 PCT/KR2005/001483 rotatably provided up and down within a stroke of a predetermined length as its one end is rotatably fixed to a predetermined position of the pivot portion 20. A boom cylinder 31 is provided to rotate the boom 30 within a stroke of a predetermined length as its one end is fixed to a predetermined position of the pivot portion 20 and its other end is rotatably fixed to a predetermined position of the boom 30. A first arm 40 is rotatably provided up and down within a stroke of a predetermined length as its one end is rotatably fixed to a predetermined position of the boom 30. A first arm cylinder 41 is provided to rotate the first ann 40 within a stroke of a predetermined length as its one end is rotatably fixed to a predetermined position of the boom 30 and its other end is rotatably fixed to a predetermined position of the first arm 40. A second arm 50 is rotatably provided up and down within a stroke of a predetermined length as its one end is rotatably fixed to a predetermined position of the first arm 40. A second arm cylinder 51 is provided to rotate the second arm 50 within a stroke of a predetermined length as its one end is fixed to a predetermined position of the first arm 40 and its other end is rotatably fixed to a predetermined position of the second arm 50. A bucket holder 60 is rotatably provided up and down within a stroke of a predetermined length as its one end is rotatably fixed to a predetermined position of the second arm 50 and its other end is rotatably fixed to the second arm cylinder 51. A bucket cylinder 61 is provided to rotate the bucket holder 60 within a stroke of a predetermined length as its one end is fixed to a predetermined position of the second arm 50 and its other end is fixed to the bucket holder 60. Meanwhile, a first fixed pin hole 32 is formed to communicate with a prcdetcrmined position of the pivot portion 20 and a predetermnined position below the boom 30. A second fixed pin hole 42 is formed to communicate with a predetermined position above the boom 30 and a predetermined position below the first arm 40. A third fixed pin hole 52 is formed to communicate with a predetermined position above the first arm 40 and a predetermined position below the second arm [26] Hereinafter, a use state and a structure of the construction equipment having excavation and loading functions, used to perform an excavation function according to one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[27] FIG. 3 is a side view illustrating the construction equipment having excavation and loading functions, used as an excavator according to one embodiment of the present invention, FIG. 4 is an enlarged perspective view illustrating the second fixed pin hole of the construction equipment having excavation and loading functions of FIG. 3, and FIG. 5 is a state view illustrating use of the construction equipment having excavation and loading functions of FIG. 3. The same description of the same reference numerals will be omitted to avoid unnecessarily repeated description.

WO 2005/113903 PCT/KR2005/001483 [28] In the aforementioned construction equipment 1 (see FIG. 2) having excavation and loading functions, a construction equipment 2 having excavation and loading functions, used as an excavator is constructed as follows. That is, as shown in FIG. 3 and FIG. 4, an excavating bucket 62 is rotatably fixed to the bucket holder 60 at a predetermined angle, and a first fixed pin 70 is inserted into the second fixed pin hole 42 (see FIG. 2) to control the operation of the first cylinder 41, the second fixed pin hole 42 being formed at a predetermined position above the boom 30 and below the first arm [291 In the use state of the aforementioned construction equipment 2 having excavation and loading functions as the excavator, the first fixed pin 70 is provided to fix the operation of the first cylinder 41, thereby fixing the first arm 40 when the pulling power is required for excavation work using the excavator as shown in FIG. 5. The boom 30, the second arm 50, and the excavating bucket 62 are respectively rotated up and down by the operation of the boom cylinder 31, the second arm cylinder 51, and the bucket cylinder 61 to perform an excavation function.

Meanwhile, a use state and a structure of the construction equipment having excavation and loading functions, used to perform a loading function according to other embodiment of the present invention will be described in detail with reference to the accompanying drawings. The same description of the same reference numerals will be omitted to avoid unnecessarily repeated description.

[31] FIG. 6 is a side view illustrating the construction equipment having excavation and loading functions, used as a loader according to other cmbodiment of the present invention, FIG. 7 is an enlarged perspective view illustrating the first fixed pin hole of the construction equipment having excavation and loading functions of FIG. 6, FIG. 8 is an enlarged perspective view illustrating the third fixed pin hole of the construction equipment having excavation and loading functions of FIG. 6, and FIG. 9 is a state view illustrating use of the construction equipment having excavation and loading functions of FIG. 6.

[32] In the aforementioned construction equipment 1 (see FIG. 2) having excavation and loading functions, a construction equipment 3 having excavation and loading functions, used as a loader is constructed as follows. That is, as shown in FIG. 6 to FIG. 8, a loading bucket 63 is rotatably fixed to the bucket holder 60 at a predetermined angle, and a second fixed pin 80 that controls the operation of the boom cylinder 31 is inserted into the first fixed pin hole 32 (see FIG. 2) formed to communicate with the predetermined position of the pivot portion 20 and the predetermined position below the boom 30. Also, a third fixed pin 90 that controls the operation of the second arm cylinder 51 is inserted into the third fixed pin hole 52 formed to communicate with the predetermined position above the first arm 40 and the P OPERMRFL101329171 I spadoc.13I/2(M -7predetermined position below the second arm [33] In the use state of the aforementioned construction equipment 3 having excavation and loading functions as the loader, the second fixed pin 80 is provided to fix the operation of the boom cylinder 31, thereby fixing the boom 30 when the pushing power is required for conveyance of earth and sand or hardening work of earth and sand using the loader as shown in FIG. 9. The third fixed pin 90 is provided to fix the operation of the second arm cylinder 51, thereby fixing the second arm 50. The first arm 40 and the loading bucket 63 are respectively rotated up and down by the operation of the first arm cylinder 41 and the bucket cylinder 61 to perform a loading function.

[34] In the aforementioned embodiments of the present invention, the construction equipment can be provided, in which the excavation and loading functions can easily be performed using single equipment depending on the work type such as excavation and conveyance of earth and sand by overcoming the difference in view of kinematics between the excavator and the loader.

The foregoing embodiment and advantages are merely exemplary and are not to be construed as limiting the present invention. The present teaching can be readily applied to other types of arrangements. Also, the description of the embodiments of the present invention is intended to be illustrative, and not to limit the scope of the claims, and many alternatives, modifications, and variations will be apparent to those skilled in the art.

[36] Throughout this specification and the claims which follow, unless the context requires otherwise, the word "comprise", and variations such as "comprises" and "comprising", will be understood to imply the inclusion of a stated integer or step or group of integers or steps but not the exclusion of any other integer or step or group of integers or steps.

[37] The reference in this specification to any prior publication (or information derived from it), or to any matter which is known, is not, and should not be taken as an acknowledgment or admission or any form of suggestion that that prior publication (or information derived from it) or known matter forms part of the common general knowledge in the field of endeavour to which this specification relates.

Claims

1. A construction machine having excavation and loading functions, the construction machine comprising an excavating and loading apparatus and a support structure from which the apparatus is supported, the support structure being mobile on the ground, wherein the apparatus further includes: a mounting defined on the support structure; a boom, one end of which is rotatably connected to the mounting; a cylinder for rotating the boom ("the boom cylinder"), one end of the boom cylinder being rotatably connected to the mounting and the other end of the boom cylinder being rotatably connected to the boom; a first arm, one end of which is rotatably connected to the other end of the boom; a cylinder for rotating the first arm ("the first arm cylinder"), one end of the first arm cylinder being rotatably connected to the boom and the other end of the first arm cylinder being rotatably connected to the first arm; a second arm, one end of which is rotatably connected to the other end of the first arm; a cylinder for rotating the second arm ("the second arm cylinder"), one end of the second arm cylinder being rotatably connected to the first arm and the other end of the second arm cylinder being rotatably connected to the second arm; a bucket holder rotatably connected to the other end of the second arm; a cylinder for rotating the bucket holder and thereby a bucket when held by the bucket holder ("the bucket cylinder), one end of the bucket cylinder being rotatably connected to the second arm and the other end of the bucket cylinder being rotatably connected to the bucket holder; a hole provided in the mounting and a hole provided in the boom, which are arranged to align at a predetermined rotational position of boom relative to the mounting whereupon they together define a first pin hole which is able to receive a pin to lock the boom rotationally with respect to the mounting, thereby rendering the boom cylinder inoperable; a further hole provided in the boom and a hole provided in the first arm, which are arranged to align at a predetermined rotational position of the first arm relative to P:%OPER\MRFUOI32917 In spa c-l3112009 -9- the boom whereupon they together define a second pin hole which is able to receive a pin to lock the first arm rotationally with respect to the boom, thereby rendering the first arm cylinder inoperable; and a further hole provided in the first arm and a hole provided in the second arm, which are arranged to align at a predetermined rotational position of the second arm relative to the first arm whereupon they together define a third pin hole which is able to receive a pin to lock the second arm rotationally with respect to the first arm, thereby rendering the second arm cylinder inoperable, the apparatus being configured such that: insertion of a pin into the second pin hole enables the machine to perform the excavation function when a bucket for excavation is held by the bucket holder; and insertion, instead, of pins into the first and third pin holes enables the apparatus to perform the loading function when a bucket for loading is held by the bucket holder.

2. A construction machine substantially as hereinbefore described with reference to the accompanying drawings and/or Examples.