Excavator mounted tree shredder

Abstract

To provide an excavator mounted tree shredder that can crush trees and shrubs at high speed.SOLUTION: By mounting the excavator mounted tree shredder to an excavator arm as a link connection portion, work in a work site where it is difficult for general vehicles or people to approach becomes easier. In addition, by detachably mounting a crushing blades to a mounting recessed part of a circular plate vertical flange fixed so that the mounting recessed part is arranged helically on an outer peripheral surface of a horizontal rotor shaft, not only trees with thick trunks and thin shrubs can be crushed at high speed but also a load on the horizontal rotor shaft can be distributed to prevent vibration. Furthermore, by selecting and adjusting a height of a rear cover member according to a work object, i.e., a tree or shrub, to be processed by the shredder, an effect of recycling crushed matter by discharging it to the front is provided.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a tree crusher that can be attached to an excavator. More specifically, the tree crusher is configured to be mounted on the arm of an excavator so as to crush trees and brush at high speeds on steep slopes, fields, hills, orchards, irrigation channels, drainage channels, farm roads, roadsides, and other locations where general vehicles and people cannot easily access. [Background technology]

[0002] Generally, weeding work to remove weeds and brushwood that grow vigorously in the summer is done manually by workers holding or carrying lawn mowers equipped with engines weighing about 10 to 20 kg in their hands, which not only makes workers more likely to feel tired due to the heavy equipment, but also slows down the work speed due to the weight of the equipment, making it difficult to complete large volumes of work, and the need for many workers has emerged as an unavoidable problem.In addition, when using mechanical lawn mowers, stones are often kicked up by the cutting blades that rotate at high speed, causing frequent accidents for workers, and the low capacity of the motor limits the work efficiency of weed removal and pruning.

[0003] Recently, in order to solve this problem, a lawnmower is attached to the bumper of a general vehicle and the like, and the lawnmower is used to more effectively remove vegetation in various locations by using the vehicle's power source.

[0004] However, such vehicle-mounted weeders are limited to areas where vehicles can enter, and their application range is very narrow, meaning that they cannot remove weeds and brush that grow in special areas where vehicles cannot enter, such as reed beds, pastures, fields, chestnut fields, wetlands, and hilly areas.

[0005] Prior art related to a weeder capable of weeding in such special areas is provided in Korean Patent Publication No. 10-2012-0019093 (title of invention: rotary type vegetation removal device using excavator) and Korean Patent Publication No. 10-2016-0026115 (title of invention: weeder for excavator).

[0006] Such a rotary type vegetation removal device using an excavator of the prior art is a vegetation removal device using an excavator that is attached to a normal excavator equipped with a multi-joint link and includes a vegetation removal means having a link connection part to be attached to a bucket attachment portion at the end of the multi-joint link, and is characterized in that the vegetation removal means includes a main body to which the link connection part is connected and coupled to the center of the upper part to form an external appearance, a rotor shaft that is installed on one side of the main body, and is supported at both ends within the main body and is horizontally installed so that it receives high-pressure hydraulic oil from a hydraulic supply system installed in a normal excavator and receives driving force from a drive motor that generates power to rotate, and a number of blade portions equipped with blades that are fastened and assembled to correspond one-to-one to a number of blade attachment parts formed at regular intervals on the rotor shaft.

[0007] This prior art technology can be operated in various ways depending on the working conditions in the area where mines are expected to be buried through the vegetation removal means attached to the excavator, so it can be used as a surface investigation device that can determine in advance whether or not there are buried mines, and it can also be used effectively as a device to remove brush and grass in lush terrain where people have difficulty accessing.

[0008] However, this prior art has a blade structure attached to a blade mounting portion that is arranged on the outer circumferential surface of the rotor shaft according to the rotation curvature, and is composed of two joined plates with the tips spread out and curved to the left and right. This is suitable for removing brushwood and grass, but has limited work efficiency and is not easy for crushing thick trees, etc.

[0009] In addition, the prior art weeder for an excavator is characterized by having a rectangular fixed frame, a fastening member that is detachably installed on one side of the upper surface of the fixed frame and is fastened to the tip of the working arm of the excavator, a cutting member whose rotating shaft is connected to a support belt installed downward on both side ends of the fixed frame so as to rotate and whose drum is equipped with a plurality of cutting blades, a driving pulley that is connected by a belt to a driven pulley provided on one rotating shaft of the cutting member, a rotating power unit that is installed on one side of the upper surface of the fixed frame and whose drive shaft transmits rotational power to the drive pulley via a guide roll, and the rotating power unit is supplied with hydraulic pressure from the hydraulic source of the excavator.

[0010] This prior art technology allows weeding to be performed by attaching a weeder to the end of the working arm of an excavator, and can increase weeding efficiency with stable rotational power. The weeder body is equipped with multiple cutting blades and has a fastening member that can be detached and attached, making it possible to attach it to the end of the working arm of different types and sizes of excavators. The fastening member is installed eccentrically on the weeder body, allowing weeding over a wide radius and effectively removing brushwood on slopes and in high places.

[0011] However, in this prior art, the cutting blades arranged at regular intervals on the outer periphery of the drum are suitable for removing brushwood and grass, and have limited operational efficiency, making them difficult for crushing thick trees and the like. [Prior art documents] [Patent documents]

[0012] [Patent Document 1] Korean Patent Publication No. 10-2012-0019093 [Patent Document 2] Korean Patent No. 10-0448278 [Patent Document 3] Korean Patent Publication No. 10-2016-0026115 Summary of the Invention [Problem to be solved by the invention]

[0013] The present invention has been devised to solve such conventional problems, and the object of the present invention is to provide a tree crusher mounted on an excavator, which is configured to easily operate in work locations where general vehicles and people cannot easily access by attaching a link connection part to the excavator arm, and to crush trees and brushwood at high speed by attaching crushing blades to the horizontal rotor shaft so that they can be separated into a spiral shape.

[0014] Another object of the present invention is to enable the crushed material generated during the crushing of trees and brushwood to be discharged to the front, collected and reused. [Means for solving the problem]

[0015] The solution to the problem of achieving this object is a horizontal plate having a link connecting part connected to an excavator arm attached to one side of the upper part, and a main body consisting of the front plate and the rear plate formed by bending the front and rear surfaces of the horizontal plate; a first and a second side house, each of which is vertically finished on both ends of the horizontal plate and the front and rear plates, has a skid fixed to its lower end, forming a space on the outside, and has both ends of a curved blocking plate fixed between the upper inner surfaces, forming an upper space and a crushing space; a rotor that is axially mounted in the crushing space between the first and second side houses so as to rotate as a rotating member and that crushes trees and brushwood; a hydraulic piston motor that is attached to an extension house integrally formed on an upper portion of the horizontal plate so as to be separated and rotated as an assembly member, and that is operated by oil pressure supplied from the excavator to rotate a rotor as a power transmission member; The rear panel of the main body is mounted to adjust the height of the rear panel, and includes a rear cover member that blocks the crushing space and allows crushed materials to be discharged to the front. Effect of the Invention

[0016] According to the present invention, by mounting the excavator arm as a link connection part, it becomes easy to work in a work place where general vehicles and people cannot easily access. In addition, the crushing blade is detachably mounted in the mounting recess of the circular plate vertical flange fixed to the outer circumferential surface of the horizontal rotor shaft so that the mounting recess is arranged in a spiral shape, so that it is possible to crush trees with thick trunks and thin brushwood at a high speed, and to prevent vibration by dispersing the load on the horizontal rotor shaft. In addition, the height of the rear cover member can be selected and adjusted according to the work object to be worked on by the crusher, i.e., trees and brushwood, and the brushwood can be discharged to the front for reuse. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a perspective view illustrating the overall structure of an excavator-mounted wood chipper according to the present invention. [Diagram 2] FIG. 2 is a perspective view illustrating the overall structure of an excavator-mounted wood chipper according to the present invention. [Diagram 3] FIG. 3 is an exploded perspective view of an excavator-mounted wood chipper according to the present invention. [Figure 4] FIG. 4 is a side cross-sectional view of a recess of an excavator-mounted wood chipper according to the present invention. [Diagram 5] FIG. 5 is a perspective view illustrating a rotor of an excavator-mounted wood chipper according to the present invention. [Figure 6] FIG. 6 is a perspective view illustrating a rotor of an excavator-mounted wood chipper according to the present invention. [Figure 7] FIG. 7 is a side view of a rotor blade member constituting the rotor of the excavator-mounted wood chipper according to the present invention. [Figure 8] FIG. 8 is a perspective view illustrating a state in which a hydraulic piston motor is installed in the excavator-mounted wood crusher according to the present invention. [Figure 9] FIG. 9 is a perspective view illustrating a state in which a hydraulic piston motor is installed in the excavator-mounted wood crusher according to the present invention. [Figure 10]FIG. 10 is an exploded perspective view and an operational state view of the rear cover member of the excavator-mounted wood chipper according to the present invention. [Figure 11] FIG. 11 is an exploded perspective view and an operational state view of the rear cover member of the excavator-mounted wood chipper according to the present invention. [Figure 12] FIG. 12 is a side view of the excavator-mounted wood crusher according to the present invention installed on the excavator. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0019] Among the attached drawings, Figures 1 and 2 are perspective views illustrating the overall structure of the excavator-mounted tree chipper according to the present invention, Figure 3 is an exploded perspective view of the excavator-mounted tree chipper according to the present invention, Figure 4 is a side view of a recess of the excavator-mounted tree chipper according to the present invention, and Figures 5 and 6 are perspective views illustrating a rotor of the excavator-mounted tree chipper according to the present invention.

[0020] As shown in Figs. 1 to 6, the excavator-mounted wood chipper according to the present invention comprises a horizontal plate (12) having a link connector (11) attached to one side of the upper portion thereof for connection to an excavator arm (1), and a main body (10) made up of a front plate (13) and a rear plate (14) formed by bending the front and rear surfaces of the horizontal plate (12); a first and second side house (20)(21) having a horizontal plate (12) and both ends of a front plate and a rear plate (13)(14) vertically finished, a skid (22) fixed to the lower end, a space (20a)(21a) formed on the outside, and a curved blocking plate (23) fixed at both ends between the inner surfaces of the upper part, forming an upper space (24a) and a crushing space (24b); a rotor (30) for crushing trees and brushwood, the rotor (30) being axially mounted so as to rotate as a rotating member (50) in the crushing space (24b) between the first and second side houses (20)(21); The assembly member (70) is detachably attached to the extension house (61) which is integrally formed on the upper part of the horizontal plate (12) so as to form a connecting space (61a) which communicates with the space (20a) of the first side house (20). The hydraulic piston motor (60) is operated by the oil pressure supplied from the excavator and serves as a power transmission member (80) for rotating the rotor (30).

[0021] A rear cover member (90) is attached to the rear plate (14) of the body (10) so that the height can be adjusted, and the rear side is selectively blocked so that crushed materials generated during operation can be discharged to the front side.

[0022] The rotor (30) comprises: a horizontal rotor shaft (31) axially installed between the first and second side houses (20)(21) to rotate as a rotating member (50); a number of circular plate vertical flanges (33) each having a central hole (32) formed in a central region so as to be inserted and fixed at equal intervals on the outer circumferential surface of the horizontal rotor shaft (31); mounting recesses (34) arranged in a spiral shape, which are cut horizontally and obliquely on the outer circumferential edges on both sides so as to communicate with the central hole (32) of the circular plate vertical flanges (33); and rotor blade members (40) detachably attached to the outer circumferential surface of the horizontal rotor shaft (31) and the mounting recesses (34) of the circular plate horizontal flanges (33) for crushing trees and brushwood.

[0023] The rotor blade member (40) comprises a number of blade mounting blocks (42) each having an end fixed to the outer circumferential surface of the horizontal rotor shaft (31), an upper portion fixed to the horizontal portion of the mounting recess (34), and an inclined assembly protrusion (41) having a block through hole (41a) formed at the lower portion; crushing blades (45) each having an inclined fitting groove (43) formed at the upper portion that is coupled to the inclined assembly protrusion (41) of the blade mounting block (42), and each having a crushing recess (44) having a blade through hole (44a) facing the block through hole (41a); and fastening bolts (46) and nuts (47) fastened and fixed through the blade through hole (44a) and the block through hole (41a) for mounting the crushing blades (45) so as to be detachable.

[0024] The rotating member (50) has an assembly through hole (51) formed corresponding to the first and second side housings (20) and (21); an inner bearing assembly (53) that is connected to the assembly through hole (51) through the space (20a) outside the first side house (20) and has a bearing (52a) built therein; The second side housing (21) is connected to the assembly through hole (51) through the space (21a) outside the second side housing (21), and has a bearing (54a) installed inside and an outer bearing assembly (55) concealed as a circular cover (56) fastened to the outer surface.

[0025] The assembly member (70) includes an assembly through hole (71) formed in the extension house (61); an inner flange (72) fastened to the extension house (61) on the outer side of the assembly through hole (71) and having an assembly hole (72a) formed therein so as to face the assembly through hole (71); an upper bearing assembly (74) that is inserted into the assembly hole (72a) of the inner flange (72) so as to protrude inward and is fastened and fixed, and has a bearing (73) disposed therein; an outer connecting shaft (75) pivotally mounted for rotation within the upper bearing assembly (74) from the outside; The hydraulic piston motor (60) is fastened to the inner surface of the upper bearing assembly (74) and is rotatably mounted on the hydraulic piston motor (60) and is connected to an external connection shaft (75).

[0026] The power transmission member (80) includes a lower pulley (82) axially mounted on one outer circumferential surface of the horizontal rotor shaft (31) of the rotor (30); an upper pulley (84) axially mounted on the outer circumferential surface of the outer connecting shaft (75); A connecting belt (86) is connected between the lower pulley (82) and the upper pulley (84) to transmit the rotational force of the hydraulic piston motor (60) to the horizontal rotor shaft (31).

[0027] At this time, a blocking cover (88) is fastened and fixed to the first side housing (20) and the extension housing (61) to conceal the power transmission member (80).

[0028] The rear cover member (90) has a rectangular recess (91) formed in the rear plate (14) so ​​as to communicate with the crushing space (24b); Vertical reinforcing strips (92) fixed to the rear panel (14) on both outer sides of the rectangular recess (91) so as to face each other; a horizontal reinforcing strip (94) fixed to the rear plate (14) between the vertical reinforcing strips (92) and having a number of assembly screw holes (93a) formed therein at horizontal intervals; a blocking cover (96) having a number of height adjustment holes (95a) formed at vertical intervals to match the assembly screw holes (94) of the horizontal reinforcing band (94); The fastening bolt (98) is inserted through the height adjustment hole (95a) of the blocking cover (96) and fastened to the assembly screw hole (95a) to fix the blocking cover (96).

[0029] Meanwhile, an inner oil supply hose (101) and an inner oil discharge hose (102) are connected between the hydraulic piston motor (60) and a motor protection valve (100) fastened to the upper part of the space (21a) of the second side noodle house (21). The motor protection valve (100) is connected to the hydraulic device (2) of the excavator, and an outer oil supply hose (103) and an outer oil discharge hose (104) are connected to the motor protection valve (100) so that oil is supplied and cut off. A motor cover (60a) for concealing the hydraulic piston motor (60) is fastened so as to be detachable to the inside of the extension housing (61) and the upper part of the horizontal plate (12).

[0030] At this time, the inner oil supply hose (102) and the inner oil discharge hose (103) are connected at one end to the motor protection valve (100), and one end flows into the upper space (24a) through the inlet hole (21a-1) formed in the upper part of the second side house (21), and is connected to the hydraulic piston motor (60) through the square hole (12a) formed in the horizontal plate (12) of the main body (10). Thus, exposure to the outside is concealed, and interference during the crushing operation is eliminated.

[0031] The operation of the excavator-mounted wood chipper according to the present invention will now be described briefly.

[0032] As shown in FIG. 12, the excavator is placed on a flat surface, the engine is stopped, and the boom is lowered with the parking brake engaged, and the link connector (11) is connected to the excavator arm (1) to attach the crusher.

[0033] In this state, the excavator is moved to a work location such as a steep slope, pasture, field, farm road, or roadside where it is difficult for humans to approach, and the hydraulic system (2) of the excavator is operated, and oil is supplied to the hydraulic piston motor (60) through the motor protection valve (100) to operate the crusher, thereby performing the work of crushing trees with thick trunks and thin brushwood.

[0034] To summarize this operating state, as shown in Figures 8 and 9, oil from the hydraulic device (2) is supplied to the motor protection valve (100) through the outer oil supply hose (103) connected between the hydraulic device (2) of the excavator and the motor protection valve (100) fastened to the upper part of the space (21a) of the second side house (21), and is supplied to the hydraulic piston motor (60) detachably mounted as an assembly member (70) in the extension house (61) through the inner oil supply hose (101) connected between the motor protection valve (100) and the hydraulic piston motor (60), causing the hydraulic piston motor (60) to rotate.

[0035] As a result, the rotational force of the hydraulic piston motor (60) is transmitted to the external connecting shaft (75) axially mounted on the motor shaft (76), and the rotational force is transmitted to the horizontal rotor shaft (31) by a connecting pulley (86) connected between an upper pulley (84) axially mounted on the external connecting shaft (75) and a lower pulley (82) axially mounted on one outer circumferential surface of the horizontal rotor shaft (31) of the rotor (30).

[0036] At the same time, as shown in Figures 5 to 7, the horizontal rotor shaft (31) axially installed between the first and second side houses (20) (21) to rotate as a rotating member (50) rotates in the reverse direction (counterclockwise), and the trees and brushwood are crushed and removed by the reverse rotation force of the crushing blades (45) of the rotor blade member (40) which are attached so as to be separated in a spiral shape into the mounting recesses (34) of the multiple circular plate vertical flanges (33) which are attached so that the mounting recesses (34) are arranged in a spiral shape on the outer circumferential surface of the horizontal rotor shaft (31).

[0037] In order to crush uncut trees or brushwood, i.e., trees or brushwood standing vertically, with a crusher that operates in this manner, the excavator boom is lowered from top to bottom, and the trees or brushwood are crushed little by little with the crushing blades (45) of the rotor blade member (40).

[0038] In order to crush trees or brushwood that have been cut, i.e., fallen to the ground, the skid (22) fixed to the lower ends of the first and second side houses (20) (21) of the crusher is placed on the ground or positioned close to it and then swiveled left and right to crush the trees or brushwood with the crushing blades (45).

[0039] As a result of this operation, the crushed material generated by the crushing blades (45) inside the crushing space (24b) between the first and second side houses (20) (21) rotates and moves due to centrifugal force along the horizontal rotor shaft (31) of the rotor (30) and the circular plate vertical flange (33), as shown in Figure 11, and is discharged to the front while colliding with the curved blocking plate (23) between the first and second side houses (20) and the inner surface of the rear cover member (90) attached to the rear plate (14) of the main body (10) so as to be adjustable in height.

[0040] In this manner, the height of the rear cover member 90 is selected and adjusted depending on the tree or brush being crushed.

[0041] To outline this operating state, as shown in Figures 10 and 11, when crushing trees with thick trunks, the fastening force of the fastening bolts (98) is released and the blocking cover (96) is moved upward to expand the crushing space (24b), and when crushing miscellaneous trees with thin trunks, the blocking cover (96) narrows the spacing of the crushing space (24b).

[0042] On the other hand, when the crushing operation is completed, the supply of oil to the hydraulic piston motor (60) is cut off, the oil of the hydraulic piston motor (60) is returned to the hydraulic device (2) of the excavator, and the link connection part (11) is separated from the excavator arm (1) to wait for the next operation.

[0043] The preferred embodiments of the present invention described above have been disclosed for illustrative purposes, and those skilled in the art having ordinary knowledge of the present invention may make various modifications, changes and additions within the spirit and scope of the present invention, and such modifications, changes and additions should be considered to fall within the scope of the following claims. [Explanation of symbols]

[0044] 1: Excavator arm 2: Hydraulic system 10: Main unit 11: Link connection part 12: Horizontal board 13, 14: Front plate, rear plate 20, 21: 1st and 2nd side houses 22: Skid 23: Curved barrier plate 24a: Upper space 24b: Crushed Space 30: Rotor 31: Horizontal rotor shaft 32: Center hole 33:Circular plate vertical flange 34: Mounting recess 40: Rotor blade member 41: Block through hole 41: Inclined assembly protrusion 42: Blade stand block 43: Inclined fitting groove 44: Crushing recess 45: Crushing blade 46: Fastening length bolt 47: Nut 50: Rotating member 60: Hydraulic piston motor 61: Extension House 70: Assembly material 80: Power transmission parts 90: Rear cover member 91: Square recess 92: Vertical reinforcement strip 93a: Assembly screw hole 94: Horizontal reinforcement strip 95a: Height adjustment hole 96: Isolation cover 98: Fastening bolt

Claims

1. A main body (10) comprising a horizontal plate (12) having a link connector (11) attached to one side of the upper portion thereof for connection to an excavator arm (1), and a front plate (13) and a rear plate (14) formed by bending the front and rear surfaces of the horizontal plate (12); a first and second side house (20) (21) which is vertically finished on both ends of the horizontal plate (12), the front plate (13) and the rear plate (14), has a skid (22) fixed to its lower end to form a space (20a) (21a) on the outside, and has both ends of a curved blocking plate (23) fixed between the inner surfaces of the upper part to form an upper space (24a) and a crushing space (24b); a rotor (30) for crushing trees and brushwood, the rotor (30) being axially mounted so as to rotate as a rotating member (50) in the crushing space (24b) between the first and second side houses (20) (21); a hydraulic piston motor (60) which is detachably mounted as an assembly member (70) on an extension house (61) which is integrally formed on the upper part of the horizontal plate (12) so as to form a connecting space (61a) communicating with the space (20a) of the first side house (20), and which operates by oil pressure supplied from an excavator and serves as a power transmission member (80) to rotate the rotor (30); The excavator-mounted wood crusher is characterized in that it is configured with a rear cover member (90) that is attached to the rear panel (14) of the main body (10) so as to be adjustable in height and that blocks the crushing space (24b) so that crushed materials are discharged to the front.

2. The rotor (30) includes a horizontal rotor shaft (31) that is axially installed between the first and second side houses (20) and (21) so as to rotate as the rotating member (50); A plurality of circular plate vertical flanges (33) each having a central hole (32) formed in a central region thereof so as to be inserted and fixed at equal intervals on the outer circumferential surface of the horizontal rotor shaft (31); a mounting recess (34) formed by cutting horizontally and obliquely on both outer circumferential edges of the circular plate horizontal flange (33) so as to communicate with the central hole (32) and arranged spirally on the outer circumferential surface of the horizontal rotor shaft (31); 2. The excavator-mounted wood crusher according to claim 1, characterized in that it is comprised of a rotor blade member (40) that is detachably mounted on the outer circumferential surface of the horizontal rotor shaft (31) and the mounting recess (34) of the circular plate horizontal flange (33) for crushing trees and brushwood.

3. The rotor blade member (40) includes a number of blade mounting blocks (42) whose ends are fixed to the outer circumferential surface of the horizontal rotor shaft (31), whose upper portion is fixed to the horizontal portion of the mounting recess (34), and whose lower portion is formed with an inclined assembly protrusion (41) having a block through hole (41a); a crushing blade (45) having an inclined fitting groove (43) formed on an upper portion thereof, the inclined assembly protrusion (41) of the blade mounting block (42) being coupled thereto, and a crushing recess (44) having a blade through hole (44a) facing the block through hole (41a); The crusher mounted on an excavator according to claim 2, characterized in that it is composed of a fastening bolt (46) and a nut (47) which are fastened and fixed through the blade through hole (44a) and the block through hole (41a) and are used to detachably mount the crushing blade (45).

4. The rear cover member (90) has a rectangular recess (91) formed in the rear plate (14) so ​​as to communicate with the crushing space (24b); vertical reinforcing strips (92) fixed to the rear panel (14) on both outer sides of the rectangular recess (91) so as to face each other; a horizontal reinforcing strip (94) fixed to the rear plate (14) between the vertical reinforcing strips (92) and having a number of assembly screw holes (93a) formed therein at horizontal intervals; a blocking cover (96) having a number of height adjustment holes (95a) formed at vertical intervals so as to match the assembly screw holes (94) of the horizontal reinforcing band (94); 2. The crusher mounted on an excavator according to claim 1, further comprising a fastening bolt (98) that is inserted through the height adjustment hole (95a) of the shielding cover (96) and fastened to the assembly screw hole (93a) to fix the shielding cover (96).

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