KR20120060589A - Level balanced platform lifting utility - Google Patents

Abstract

PURPOSE: A level balanced platform lifting utility is provided to obtain safe work at a high place by preventing falling accidents of workers due to movement of a working platform while harvesting fruit trees. CONSTITUTION: A level balanced platform lifting utility comprises a horizontal boom(20), a first vertical boom(32), a second vertical boom(34), a third vertical boom, and a horizontal balancing unit. The horizontal boom turns to left and right sides by the operation of a cylinder on a vehicle frame(10). The first vertical boom, the second vertical boom, and the third vertical boom are connected from the horizontal boom as a z-shape. A working platform(30) is installed on the top of the first vertical boom, the second vertical boom, and the third vertical boom. The first vertical boom, the second vertical boom, and the third vertical boom are turned to a progress direction of a driving device(14) by the cylinder. The horizontal balancing unit comprises a tilt sensor for detecting gradient of the vehicle frame and the working platform. The values detected by the tilt sensor are computed to output gradient calibration command to the cylinder.

Description

Leveling Aerial Lift Vehicle {Level balanced platform lifting utility}

The present invention relates to a horizontal maintenance aerial work vehicle, and more particularly to repeat the stop and move in a non-flat terrain including an orchard and to maintain the leveling platform at the set height while performing the aerial work A horizontal maintenance aerial aerial vehicle.

Typically, aerial work vehicle is a device for performing work in a high position, including a work platform on which the operator boards, and a lifting device for adjusting the height of the work platform, mainly high-rise outer wall construction and street lamp maintenance, Sue works such as signboard installation will be performed.

In other words, in order to prevent the rollover accident during the operation, the outriggers must be supported by the outriggers from all directions to fix the location. Therefore, the outriggers must be folded and retracted when the vehicle is moved. Therefore, the mobility is poor, it is not suitable for the fruit harvesting of fruit farms that have to repeatedly move and stop and carry out the aerial work.

Looking at the agricultural boom type aerial work vehicle disclosed in the prior art, the out pull of the slide pull-out and rotation structure to the front and side to be used in the farm land (農 事 地) inclined in the Patent Publication No. 10-2010-0048537 Each of them is provided so that a safe work can be performed by keeping the vehicle horizontal.

However, the prior art is a structure in which a workbench is coupled to one end of a lift that protrudes long to one side of the vehicle, and the center of gravity of the vehicle is variable according to the position of the workbench, thereby failing to secure stability during movement and operation.

In other words, most fruit trees are formed at high altitudes to produce fruits of high sugar content, and in order to improve drainage of fruit trees, the ground is generally formed as slopes around 20 degrees and is not flat. When moving to the ground of the picture, the vehicle and the workbench were tilted together, losing the center of gravity and leading to a rollover accident.

On the other hand, in Patent Publication No. 1997-0000628 and Patent Registration No. 10-0604017, the height of the high-altitude vehicle is adjusted horizontally with respect to the driving direction to maintain the level of the workbench at an inclined place, but this is mainly the high-altitude object To carry out painting work on the outer wall of the ship for transport, it is a limited technology that the horizontal is adjusted horizontally with respect to the driving direction.

Therefore, it is virtually impossible to maintain the workbench horizontally in response to the ground of an orchard farm, which is difficult to predict in which direction it will be inclined while driving. There were problems that led to safety accidents, such as a worker complained about.

In order to solve the above problems, the present invention is to secure the mobility of the high vehicle in response to the inclined and uneven ground, and in particular, the worktable is kept horizontal at the set height during the over-harvesting operation to repeat the movement and stop It relates to a horizontal maintenance aerial vehicle for securing the safety of aerial work while preventing the accident of the aerial worker due to rapid up, down, left and right flow.

In addition, another problem is that the power source is operated only when changing the location of the vehicle and work platform to prevent unnecessary fuel consumption in the atmosphere, thereby improving energy efficiency and performing the aerial work in a quiet and comfortable environment.

In addition, another problem is to improve the work efficiency without changing the location of the vehicle and the workbench so that the work area can be easily extended to a location where the high-altitude vehicle and the workbench is difficult to access directly.

In order to achieve this object, a feature of the present invention is a horizontal boom 20 which is pivoted left and right by operation of a cylinder 20b on a vehicle frame 10 on which a power source 12 is mounted and a traveling device 14 is provided. ); The working table 30 is installed on the horizontal boom 20 in the shape of a "Z", and is installed at the upper end thereof, and the cylinders 32b, 34b, and 36b are moved in the traveling direction of the traveling device 14. Pivoting first, second, and third vertical booms (32, 34, 36); And an inclination sensor 46 for detecting an inclination of the vehicle frame 10 and the work table 30, and calculating the value detected by the inclination sensor 46 on each cylinder 20b and 36b. And a horizontal holding unit 40 for outputting a tilt correction command.

At this time, when the vehicle frame 10 and the work table 30 is inclined and the inclination angle is 1 degree or more, the horizontal holding unit 40 detects this and outputs a tilt correction command. 36b is operated until the inclination angle between the horizontal boom 20 and the second vertical boom 36 is less than 1 degree, characterized in that the left and right, before and after the horizontal running is maintained.

The work platform 30 is lifted and operated by the linkage operation of the second vertical boom 34 and the third vertical boom 36 or the first vertical boom 32 and the third vertical boom 36, 1, 2 vertical boom 32, 34 is characterized in that it is formed to work in conjunction.

In addition, the second vertical boom 34 is limited to the turning angle of 35 to 50 degrees relative to the first vertical boom 32 by the limit sensor, the second vertical boom 34 when the work platform 30 is lifting operation After this pre-operation, the first vertical boom 32 is characterized in that it is linked to post-operation.

In addition, the power source 12 includes a gasoline generator 12b for charging the battery 12a, an electric motor 12c driven by the battery 12a, and a hydraulic device for generating oil pressure by the electric motor 12c. And 12d.

In addition, the work table 30 is installed to be installed to adjust the length of the auxiliary footrest 38 so that the work area is extended to both sides, the auxiliary footrest 38 is formed of 400 ~ 600mm (width) * 800 ~ 1100mm (length) It is characterized by.

According to the above configuration and action, the present invention is excellent in maneuverability on the inclined and uneven ground as the worktable is maintained at the height set by the horizontal holding unit, especially in the over-harvesting operation to repeat the movement and stop As the fall accident of the aerial worker due to the flow of the workbench is prevented, the safety of the aerial work is secured.

In addition, the motor of the power source is operated only when the location of the high-traffic vehicle and the work bench is changed, and when the battery falls to the voltage that needs to be charged during standby, the engine is operated. Otherwise, unnecessary fuel consumption is prevented to improve energy efficiency and quiet the working environment. There is an effect that keeps and comfortable.

In addition, as the auxiliary footrest protrudes to the length adjustable in the work target, the work area is extended to a position where the high-traffic vehicle and the work platform is difficult to directly access, thereby improving the height of the work efficiency.

1 is a perspective view showing a horizontal maintenance agricultural aerial work vehicle according to the present invention as a whole.
Figure 2 is a side view showing the main configuration of the horizontal maintenance agricultural aerial vehicle according to the present invention.
Figure 3 is a block diagram showing the fruit harvesting operation using a horizontal maintenance aerial work vehicle according to the present invention.
Figure 4 is a block diagram schematically showing a horizontal control unit of the horizontal maintenance agricultural aerial vehicle according to the present invention.
Figure 5 is a block diagram showing an operating state in which the horizontal maintenance of the horizontal maintenance agricultural aerial work vehicle according to the present invention horizontally.
Figure 6 is a block diagram showing an operating state in which the horizontal maintenance in the front and rear direction of the horizontal maintenance agricultural aerial vehicle according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a horizontal maintenance aerial work vehicle, wherein the horizontal maintenance aerial work vehicle is to increase the efficiency of aerial work and to ensure safety during over-harvesting operations to repeat the movement and stop on the slope and uneven ground The vehicle frame 10, the horizontal boom 20, the first, second, third vertical boom 30, the horizontal holding portion 40 is composed of a main configuration.

The vehicle frame 10 according to the present invention is equipped with a power source 12, the traveling device 14 having a track 14a. The vehicle frame 10 has a horizontal boom 20, which will be described later, and the first, second, and third vertical booms 30 mounted thereon, and the front and rear conveyance and left and right directions are changed by the traveling device 14. The traveling device 14 is formed of a track 14a device to secure stable maneuverability as the ground area with an irregular ground is expanded, and is configured to include an HST continuously variable transmission to improve the driving operation of the track 14a device. . Here, the HST continuously variable transmission is composed of a hydraulic pump and a hydraulic motor, and the continuously variable transmission is performed by adjusting the discharge amount of the hydraulic pump.

At this time, the power source 12 is a gasoline generator 12b for charging the battery 12a, an electric motor 12c driven by the battery 12a, and a hydraulic device for generating hydraulic pressure by the electric motor 12c. And 12d. Here, the power source 12 preferably includes a DC72v 100Ah deep cycle battery 12a and a 3.5kw gasoline generator 12b in consideration of the weight of the high vehicle and the horsepower of the traveling device.

The power source 12 converts the fuel energy into electrical energy by the gasoline generator 12b and charges the battery 12a. Then, the electric motor 12c drives the hydraulic device 12d by the electric energy. The operation of the traveling device 14 and each cylinder described later is controlled by this.

At this time, the electric motor 12c is driven only when the hydraulic device 12d (for example, a cylinder, a traveling device) is operated, and the gasoline generator 12b is operated only when necessary to compensate for the insufficient power. As such, when the high-traffic vehicle is in the standby state, the electric motor 12c is turned off to prevent unnecessary energy consumption and the working environment is kept quiet and comfortable.

In addition, both ends of the horizontal boom 20 according to the present invention are coupled to the hinge 20a on the vehicle frame 10, and the hinge 20a is pivoted in the lateral direction by the operation of the cylinder 20b. The horizontal boom 20 uses a square pipe having a width of 45 × 75 × 2.3mm to form a rectangular frame of 1200mm in width and 1200mm in length, and the front and rear centers of the square frame are joined by a hinge 20a on the vehicle frame 10. do. And by using two hydraulic cylinders (20b) of 60mm in diameter, 300mm working distance on both ends of the horizontal boom 20 is maintained horizontally by pushing the left and right of the rectangular frame respectively.

At this time, the horizontal control of the horizontal boom 20 receives the tilt correction command output from the horizontal holding unit 40 to be described later, the two cylinders 20b share the left and right of the horizontal boom 20 is operated in the opposite direction to each other, Accordingly, the same force acts in the opposite directions while the horizontal boom 20 is pivoting, so that backlash due to the shaking or vibration of the horizontal boom 20 is prevented, thereby precisely controlling the angle according to the horizontal control.

In addition, the first, second, and third vertical booms 32, 34, 36 according to the present invention are connected to the shape of the "Z" on the horizontal boom 20, the work table 30 is installed on the top, Each cylinder 32b, 34b, 36b is pivoted in the traveling direction of the traveling device 14. The first, second and third vertical booms 32, 34 and 36 are arranged in the shape of a "Z" as shown in FIG. 2 with their ends connected to each other by hinges 32a, 34a and 36a. In accordance with the independent turning angles of the first, second, and third vertical booms 32, 34 and 36, the height and the horizontal of the work bench 30 are adjusted.

Here, looking at the structure of the first, second, third vertical booms 32, 34, 36 in more detail, the first vertical boom 32 is a square pipe of length 1500mm to the horizontal holding frame at intervals of 600mm width It is attached to the hydraulic cylinder up to 1000mm in height and attached to the hydraulic cylinder, it is formed, the second vertical boom 34 is 1100mm in length, the third vertical boom 36 is 700mm each when operated with two cylinders, the first The length of the vertical boom 32 and the second vertical boom 34 is formed in a ratio of about 3: 2 to ensure structural safety.

At this time, the first vertical boom 32 plays a main role in moving the work bench 30 up and down, and the second vertical boom 34 and the third vertical boom 36 maintain the traveling direction of the work table 30 horizontally. Used as

More specifically, the work platform 30 is lifted and lowered by the linkage operation of the second vertical boom 34 and the third vertical boom 36 or the first vertical boom 32 and the third vertical boom 36, The worktable 30 is formed such that the first and second vertical booms 32 and 34 are linked to each other in the lowering operation.

In addition, the second vertical boom 34 has a turning angle of 35 to 50 degrees based on the first vertical boom 32 by a limit sensor, and the second vertical boom 34 when the work platform 30 moves up and down. After this pre-operation, the first vertical boom 32 is linked to post-operation. At this time, when the angle of the second vertical boom 34 is set to 35 degrees or less, the lifting height of the worktable 30 is reduced, and if it is set to 50 degrees or more, the structural safety is not secured, preferably, it is set to 45 degrees. desirable.

That is, when the work platform 30 is moved up and down, first, the second vertical boom 34 is operated in connection with the third vertical boom 36 to an angle detected by the limit sensor, and the work platform 30 is elevated in a state where the work table 30 is maintained. Then, the first vertical boom 32 and the third vertical boom 36 is interlocked when the lifting platform 30 is additionally lifted and operated so that the work bench 30 is horizontally maintained, and the work bench 30 is lowered. In operation, the first and second vertical booms 32 and 34 simultaneously operate in conjunction with each other, so that the work bench 30 is quickly lowered in a horizontal state.

As such, when the lifting platform 30 is moved up and down, the second vertical boom 34 is preferentially operated, and when the set operating range is reached, the limit sensor senses this and controls it to be made by the first vertical boom 32 during the subsequent lifting operation. As a result, an operating space for horizontal maintenance of the third vertical boom 36 is secured when the work platform 30 is initially elevated.

On the other hand, the first, second and third vertical booms 32, 34 and 36 are independently controlled by the respective cylinders 32b, 34b and 36b so that the turning angle is controlled to repeat the high and low vehicle movements and stops. While the work bench 30 is maintained at the same height before and after the horizontal in response to the inclination of the traveling device 14, a detailed description thereof will be described later with reference to FIGS.

In addition, the first, second, and third vertical booms 32, 34 and 36 are connected to the horizontal boom 20 in the shape of a "Z", so that the work bench 30 is always provided with the vehicle frame 10. It is located at the top. Thus, even if the height and level of the worktable 30 is adjusted, the position on the plane does not change greatly, so that the safety accident that the high-rise vehicle loses its center of gravity and is overturned during the aerial work is prevented.

In addition, the worktable 30 according to the present invention is installed to be inserted into the auxiliary footrest 38 to adjust the length so that the work area is extended to both sides, the auxiliary footrest 38 is 400 ~ 600mm (width) * 800 ~ 1100mm (length Is formed. The work table 30 is installed on the upper part of the third vertical boom 36, and the bottom plate forms a thickness of 50 mm, a length of 1700 mm, and a width of 1100 mm, and a plate having a thickness of 50 mm, a height of 500 mm, and a width of 1100 mm in front of the bottom plate. A handrail support for attaching the support vertically and attaching the operating device is installed on the plate vertically, and the auxiliary scaffold 38 is installed on the left and right.

At this time, the auxiliary scaffold 38 is formed of 400 ~ 600mm (width) × 800 ~ 1100mm (length) is disposed to the left and right of the work table 30, the auxiliary scaffold on the left side is located in front of the center, The auxiliary scaffold 38 is disposed to be located at the rear. If the width of the auxiliary scaffold is less than 400mm, the working space is narrow and the stability is lowered. If the width of the auxiliary scaffold is more than 600mm, it is difficult to be caught by fruit trees or placed between branches during work. If it is abnormal, there is a problem that the workability is impaired when moving between the fruit trees, it is preferable to form a width of 600mm x length 900mm.

In addition, since the auxiliary scaffold 38 is disposed at different positions from each other without interference, the length of the auxiliary scaffold 38 can be formed to be the same as the width of the bottom plate of the work table 30, and thus the work area according to the length adjustment. This widens.

Thus, as shown in FIG. 3, the auxiliary scaffold 38 protrudes to both sides of the work bench 30, so that the work area is extended to a position where the high vehicle and the work platform are difficult to access directly, thereby improving the work efficiency of the height. have.

On the other hand, the auxiliary scaffold 38 is a diameter 40mm, the protrusion length is automatically adjusted by the hydraulic cylinder of the operating distance 900mm, it is preferable that the guide is installed at the end so that the operator can safely hold and balance the body.

In addition, the horizontal holding unit 40 according to the present invention is provided with a tilt sensor 46 for detecting the inclination of the vehicle frame 10 and the work table 30, by calculating the value detected by the tilt sensor 46 An inclination correction command is output onto each of the cylinders 20b and 36b. The horizontal holding portion 40 is hydraulically applied to the cylinders 20b, 32b, 34b and 36b for turning the horizontal boom 20 and the first, second and third vertical booms 32, 34 and 36. The solenoid valve 42 for controlling the supply, the relay 44 for outputting an operation signal onto the solenoid valve 42, and the inclination of the vehicle frame 10 and the work table 30 are detected and onto the relay 44. And a tilt sensor 46 for outputting a tilt correction command.

At this time, the relay 44 is a kind of switch that controls the operation of the solenoid valve 42 by receiving a signal from the inclination sensor 46, and independently controls the respective cylinders 20b and 36b to control the work bench 30. While maintaining the horizontal in the left and right, front and rear directions, the detailed description will be described in detail with reference to FIGS.

In FIG. 5, the operation state in which the work table 30 is horizontally controlled in the left and right directions by the horizontal holding unit 40 is described in detail. When the traveling device 14 is inclined in the left and right directions while driving, the inclination angle becomes 1 degree or more. The inclination sensor 46 detects this and outputs a tilt correction command, and the cylinder 20b operates until the inclination angle between the horizontal boom 20 and the work table 30 is within 1 degree so that left and right horizontals are maintained even while driving. do.

In FIG. 6, the operation state in which the worktable 30 is horizontally controlled in the front-rear direction by the horizontal holding unit 40 will be described in detail. When the traveling device 14 is inclined in the front-rear direction while driving, the inclination angle becomes 1 degree or more. The inclination sensor 46 detects this and outputs a tilt correction command, and the cylinder 36b rotates the third vertical boom 26 to operate until the inclination angle of the work bench 30 is within 1 degree, even while driving. Left and right horizontal is maintained.

At this time, the height of the work table 30 according to the forward and backward turning angle correction is independently controlled by each cylinder (32b, 34b) by the operation of the height sensor or the operator so that the work table 30 is kept horizontal at the set height. .

As such, the work table 30 which is spaced vertically away from the vehicle frame 10 and reacts sensitively to the ground state is quickly inclined and uneven as the horizontal control unit 40 is horizontally maintained in the front, rear, left and right directions. In the excellent maneuverability, in particular, the safety of the aerial work is secured while preventing accidents of the aerial worker due to the flow of the work platform 30 during the over-harvesting operation to repeat the movement and stop.

10: vehicle frame 20: horizontal boom 30: worktable
40: horizontal holding part

Claims (6)

A horizontal boom 20 mounted on the vehicle frame 10 on which the power source 12 is mounted and the traveling device 14 is rotated in the horizontal direction by the operation of the cylinder 20b;
The working table 30 is installed on the horizontal boom 20 in the shape of a "Z", and is installed at the upper end thereof, and the cylinders 32b, 34b, and 36b are moved in the traveling direction of the traveling device 14. Pivoting first, second, and third vertical booms (32, 34, 36); And
An inclination sensor 46 for detecting the inclination of the vehicle frame 10 and the work table 30 is provided, and the inclination on the respective cylinders 20b and 36b is calculated by calculating the value detected by the inclination sensor 46. Horizontal maintenance agricultural aerial work vehicle comprising a; horizontal maintenance unit 40 for outputting a correction command. The method of claim 1,
When the vehicle frame 10 and the work table 30 are inclined and the inclination angle is 1 degree or more, the horizontal holding unit 40 detects this and outputs a tilt correction command, corresponding cylinder 20b ( 36b) is operated until the inclination angle between the horizontal boom 20 and the second vertical boom 36 is less than 1 degree, so that the horizontal horizontal agricultural aerial work vehicle, characterized in that the left and right, before and after horizontal driving is formed. . The method of claim 1,
The work platform 30 is lifted and operated by the linkage operation of the second vertical boom 34 and the third vertical boom 36 or the first vertical boom 32 and the third vertical boom 36, Horizontal maintenance agricultural aerial vehicle, characterized in that the 1, 2 vertical boom 32, 34 is formed so as to operate in conjunction. The method of claim 1,
The second vertical boom 34 has a turning angle of 35 to 50 degrees based on the first vertical boom 32 by a limit sensor, and the second vertical boom 34 is turned on when the work platform 30 moves up and down. Horizontal maintenance agricultural aerial vehicle, characterized in that the first vertical boom 32 is operated after the operation is linked after. The method of claim 1,
The power source 12 includes a gasoline generator 12b for charging the battery 12a, an electric motor 12c driven by the battery 12a, and a hydraulic device 12d for generating oil pressure by the electric motor 12c. Horizontal maintenance agricultural aerial vehicle, characterized in that comprises a). The method of claim 1,
The work table 30 is inserted into the auxiliary scaffold 38 to be adjustable in length so that the work area is extended to both sides, the auxiliary scaffold 38 is formed to be 400 ~ 600mm (width) × 800 ~ 1100mm (length) Horizontal maintenance aerial aerial vehicle, characterized by.

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