KR20130070744A

KR20130070744A - Small sized excavator having free roating arm

Info

Publication number: KR20130070744A
Application number: KR1020110137907A
Authority: KR
Inventors: 문창림; 심재식
Original assignee: 주식회사 일신
Priority date: 2011-12-20
Filing date: 2011-12-20
Publication date: 2013-06-28

Abstract

PURPOSE: A small sized excavator including an arm freely rotating is provided to reduce time and to improve work efficiency by smoothly working in a narrow space. CONSTITUTION: A small sized excavator including an arm freely rotating comprises a bucket, an arm, a bracket, a body, and an orbit wheel. A rotation member(100) rotates an arm right and left at an angle of 90 degrees is connected to the bracket. The rotation member comprises first and second cylinders(110,120), first and second pistons(130,140), and a gear(150). The first and second cylinders are operated by first and second fluid pressure inlets(101,102) and outlets(103,104). The first and second pistons are installed in the first and second cylinders and comprise rack gears(131,141) moving in a straight line. The gears are interlocked with the rack gears and rotate an arm right and left.

Description

Small sized excavator having free roating arm

The present invention relates to a compact excavator for removing rock in the ground in building construction. Specifically, the present invention relates to a compact excavator having a free-rotating arm that can improve the work efficiency and save time by allowing to work smoothly in a narrow place during narrow mining and coal mining operation.

In general, forklifts are used to excavate ground works in civil engineering, construction, and construction sites, to load earth and sand into dump trucks, to crush buildings and stones, and to clean up the ground. It is a construction machine that raises or picks up an object using tongs, and is composed of a traveling body that serves as a movement of equipment, and an upper swinging body and a working device that is rotated 360 degrees.

Such forklifts can be used with appropriate work equipment according to the condition of soil and rock, the type and purpose of the work. A bucket for breaking a bucket, hard ground, rock, etc. for general excavation and soil transportation, The crusher used for dismantling and crushing the building will be installed on the bucket clamp to suit each work purpose.

However, such a general forkrain has been difficult due to its size when working in a narrow tunnel or tunnel.

Therefore, a small forklane was developed and used as a solution to solve the above problems, but it is good when the amount of soil is flat (amount when the soil is flattened) during the bucket work. In order to work on the back, a separate crusher was needed.

The present invention has been made to solve the above-mentioned problems of the prior art, the object of the present invention is to provide a narrow tunnel by allowing the operation of the bucket installed in the small excavator to rotate 90 ° left and right with a general operation and the longitudinal axis as a support point, The purpose is to facilitate work in oysters.

The objects of the present invention will be explained in more detail below and will be further illustrated by examples. Further, objects and advantages of the present invention can be realized by the means shown in the claims and their combinations.

The compact excavator (1) having a free-rotating arm of the present invention includes an arm (20) for supporting a bucket (10) having a function of mining, digging and scraping, and a hydraulic pressure that enables the arm (20) to be rotated by entering and exiting. A bracket 50 formed on one side of the boom 30 having the cylinders 40 and 41, and a track wheel 70 installed for movement in a lower portion of the excavator body 60 fixed through the bracket 50; In the small excavator equipped with the cockpit 61 on the upper part of the body 60

The bracket 50 has a rotating member 100 for rotating the arm 20 at an angle of 90 ° to the left and right by bolts, and the rotating member 100 includes first and second hydraulic inlets 101 and 102 and First and second pistons having first and second cylinders 110 and 120 operated by outlets 103 and 104 and rack gears 131 and 141 installed in the first and second cylinders 110 and 120 to linearly move. 130 and 140 and the rack gears 131 and 141 are meshed with the low gear 150 for rotating the arm 20 to the left or the right.

Therefore, the compact excavator having the freely rotating arm according to the present invention, by installing a rotating member for rotating the arm 90 degrees left and right, so that it can work smoothly in a narrow place during narrow mining and coal mining operation This will improve work efficiency and save time.

1 is a perspective view of a mini excavator with freely rotating arms in accordance with the present invention.
2 is an exploded view showing a part of a small excavator having a freely rotating arm according to the present invention, an arm supporting a bucket and a hydraulic cylinder are installed, and the boom and the rotating member having the bracket fixed at one end are shown. to be.
3 is a cross-sectional view showing only the rotating member of the mini excavator having a freely rotating arm according to the present invention.
Figure 4 is a front view showing the operation of the mini excavator having a freely rotating arm in accordance with the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description with reference to the accompanying drawings, the same reference numerals denote the same elements regardless of the reference numerals, and redundant description thereof will be omitted. Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

Hereinafter, the same names and configurations are denoted by the same reference numerals, and a description thereof will be omitted.

Small excavator 1 having a freely rotating arm according to the present invention is the basic configuration as shown in Figure 1, the arm 20 for supporting the bucket 10 having a large mining, digging and scraping function, and Bracket 50 formed on one side of the boom 30 with the hydraulic cylinder (40, 41) to allow the arm 20 to rotate by the entry and exit, and the excavator body 60 fixed through the bracket (50) Consists of a track wheel (70) installed for movement in the lower part of the), and a cockpit 61 in the upper portion of the body (60).

As shown in FIG. 2 or 3, the bracket 50 is provided with a rotating member 1000 to rotate the arm 20 at left and right 90 ° angles.

That is, as shown in Figure 3, the rotating member 100, the upper and lower first and second cylinders 110 and 120 are fixed to the fixing portion 80 by fastening bolts and nuts 81.

The fixing part 80 is composed of a pair of thick plates of substantially rectangular shape, and a plurality of holes are formed in the plate, and are fixed by fastening bolts and nuts 81 through the holes.

In addition, the first and second cylinders 110 and 120 are fixed up and down between the plates.

The first and second cylinders 110 and 120 export oil into the first and second hydraulic inlets 101 and 102 and the first and second cylinders 110 and 120 to receive hydraulic pressure from a hydraulic pump (not shown). Outlets 103 and 104 are formed.

In addition, first and second pistons 130 and 140 which are operated by hydraulic pressure are installed in the first and second cylinders 110 and 120, and rack gears 131 and 141 are integrated in the first and second pistons 130 and 140. Is formed.

The gear 150 is installed to be engaged between the rack gears 131 and 141.

The gear shaft 151 is provided with a rotating shaft 160 fixed to the bracket 50 to rotate the arm 20 at an angle of 90 ° to the left or right according to the rotation of the gear.

Looking at the operation method and effect of a small excavator having a free-rotating arm according to the present invention having such a configuration as follows.

As shown in FIG. 1 or FIG. 2, an arm 20 supporting a bucket 10 having a function of mining, digging and scraping, and a hydraulic cylinder 40 allowing the arm 20 to be rotated by entering and exiting. Bracket 50 formed on one side of the boom 30 having a, 41, and the rotating member 100 for rotating the boom 30 and the arm 20 to the left and right in the bracket 50, 90 degrees Is installed, this rotating member 100 is installed in the excavator body (60).

In addition, a track wheel 70 is installed at the lower portion of the body 60 to move the excavator, and an adjustment seat 61 is provided at the upper portion of the body 60.

Therefore, in the state where the driver sits in the cockpit 61, the driver starts the vehicle and enters a narrow tunnel or a tunnel to work.

At this time, the operator operates the operation lever (not shown) to dig soil or other minerals on the left and right while working in a narrow tunnel, and as shown in FIG. Through the hydraulic inlets 101 and 102, the hydraulic pressure causes the first and second pistons 130 and 140 in the first and second cylinders 110 and 120 to move in the direction of the arrow.

Then, the gear 150 meshed with the rack gears 131 and 141 formed on the first and second pistons 130 and 140 rotates, and the rotation of the gear rotates the rotation shaft 151.

As shown in FIG. 4, the rotation of the rotating shaft 151 is transmitted to the bracket 50, and the boom 30 and the arm 20 are rotated at an angle of 90 ° to the left and right by the rotation of the bracket 50. Will rotate.

Therefore, it is possible to work smoothly in a narrow place at the time of narrow mining or coal mining.

While the present invention has been described with reference to the preferred embodiments and the accompanying drawings, it is to be understood that the invention may be practiced otherwise than as specifically described. Accordingly, the scope of the present invention is defined by the appended claims, and is not to be construed as limited to the specific embodiments described herein.

1: Excavator 10: Bucket
20: arm 30: boom
40, 41: hydraulic cylinder 50: bracket
60 body 61 cockpit
70: wheel 100: rotating member
101,102: hydraulic inlet 103,104: outlet
110,120: Cylinder 130,140: Piston
131,141: rack gear 150: gear
160: axis of rotation

Claims

Of the boom 30 having an arm 20 for supporting a bucket 10 having a function of mining, digging and scraping, and hydraulic cylinders 40 and 41 allowing the arm 20 to be rotated by entering and exiting. Bracket 50 formed on one side, the track wheel 70 installed for movement in the lower portion of the excavator body 60 is fixed through the bracket 50, and the adjustment seat 61 on the upper portion of the body 60 In the small excavator equipped
The bracket 50 has a rotating member 100 for rotating the arm 20 at an angle of 90 ° to the left and right by bolts, and the rotating member 100 includes first and second hydraulic inlets 101 and 102 and First and second pistons having first and second cylinders 110 and 120 operated by outlets 103 and 104 and rack gears 131 and 141 installed in the first and second cylinders 110 and 120 to linearly move. (130,140) and the rack gear (131,141) is a compact excavator having a freely rotating arm, characterized in that consisting of a low gear 150 for rotating the arm (20) left or right.