KR102612322B1 - Four directions high place working vehicles - Google Patents

Abstract

The present invention relates to an aerial work vehicle having a four-way extendable outrigger, which includes a driveable main body and a boom provided on the main body to move the workbench up and down, with the ground in front, behind, and on both sides of the main body. An aerial work vehicle is provided including a first outrigger provided to be rotated to the side, and a second outrigger provided to be rotated from the first outrigger to the ground side.

Description

Aerial work vehicle having a four-way extendable outrigger {Four directions high place working vehicles}

The present invention relates to a high-altitude work vehicle. More specifically, the vehicle cannot be driven when the height of the workbench on which the worker works is adjusted to the high-altitude position, and at the same time, the expandable outrigger is activated to ensure safe work. It relates to an aerial work vehicle having a 4-way extendable outrigger that allows for maneuvering.

In general, an aerial work vehicle is a device for performing work at a high location, and includes a workbench on which a worker rides (commonly called a 'basket' or 'bucket', hereinafter collectively referred to as a "workbench") and a lifting platform. Includes lifting means whose height can be adjusted.

These aerial work vehicles can perform high-altitude work such as high-rise exterior wall construction, streetlight repair, and signboard installation while lifting the workbench to a high position.

Such aerial work vehicles are equipped with outriggers to prevent rollover accidents during work at heights, and the outriggers are spread out and installed in all directions of the aerial work vehicle to support and secure the aerial work vehicles.

Meanwhile, an agricultural aerial work vehicle, which is an example of a work vehicle, has previously been proposed in Republic of Korea Patent No. 10-1046439 (hereinafter referred to as 'Prior Art Document 1').

The conventional aerial work vehicle disclosed in Prior Art Document 1 is equipped with a work platform that is installed on the upper surface of the vehicle to be able to be raised and lowered so that the worker can board it, and is equipped with front outriggers at both ends of the front of the vehicle to expand the support area of the lower part of the vehicle. Rear outriggers are provided at both ends of the rear of the vehicle to expand the support area of the vehicle.

Therefore, when using a conventional aerial work vehicle on a sloping agricultural field (hereinafter referred to as 'ground'), the front outrigger and rear outrigger are pulled out and the worker rides while the vehicle body is firmly supported on the ground. Work at heights is being carried out by raising the workbench.

However, when moving such a conventional aerial work vehicle, the outrigger must be repeatedly folded and unfolded one by one, which reduces mobility. In orchard farms that must perform work at a height while frequently moving and stopping, aerial work vehicles are used for fruit harvesting. It is unsuitable for use.

In addition, the front and rear outriggers are pulled out from the bottom of the car body towards the ground to firmly support the car body. At this time, since the support area by the outriggers and wheels is limited to the lower part of the car body, the car body is firmly supported in the front and rear directions. On the other hand, on the side of the car body, which has a relatively narrow support area, the car body may tilt due to changes in the center of gravity due to the movement of workers working at heights, which is a fatal disadvantage that directly leads to a serious rollover accident. It is inherent.

In addition, because a conventional aerial work vehicle can always drive regardless of the height (position) of the workbench, when the aerial work vehicle is driven on an uneven road surface with the workbench located at a height, the work vehicle may move due to its high center of gravity. This causes severe shaking, which raises the risk of a safety accident in which the work vehicle may overturn and seriously injure the worker.

Republic of Korea Patent No. 10-1046439

Therefore, the present invention was developed to solve the problems of the prior art as described above. In addition to firmly supporting the vehicle body during work at heights, the work vehicle's running is controlled according to the height or location of the work table on which the worker rides, so that the worker can The purpose is to provide an aerial work vehicle with 4-way extendable outriggers that prioritizes safety.

An aerial work vehicle having a four-way extendable outrigger according to the present invention for achieving the above-described purpose is an aerial work vehicle including a drivable main body and a boom provided on the main body to move the workbench up and down. It is characterized by an aerial work vehicle including a first outrigger provided to be rotated toward the ground side at the rear and both sides, and a second outrigger provided to be rotated from the first outrigger toward the ground side.

In addition, the first outrigger is provided with a plurality of pivotable arms on the front, rear, and both sides of the main body, respectively, and the pivoting arm on one side is provided with a connection frame for interconnecting the plurality of pivoting arms, and the front and back of the main body. , A first cylinder is rotatably installed on each of the rear and both sides to rotate the connecting frame and the rotating arm, and a first support unit that connects the plurality of rotating arms and is rotated by the first cylinder to contact the ground is provided. It can be.

In addition, the second outrigger is hinged to the first outrigger and a second cylinder rotatably provided at the front, rear, and both sides of the main body, and is rotated on the first outrigger by the second cylinder to lie on the ground. It may include an abutting second support.

In addition, the main body is equipped with a telescopic master having a multi-stage boom that is connected to the boom of the workbench and moves the boom and the workbench up and down, and the telescopic master is equipped with a first detection sensor that detects the entry and exit of the multi-stage boom. When the withdrawal of the multi-stage boom is detected, the controller may be provided to lock the main body and control it so that it cannot be driven.

In addition, the boom is hinged to the telescopic master and rotates to rotate the workbench up and down. The telescopic master is equipped with a second sensor that detects the rotation of the boom, and the second sensor detects the upward direction of the boom. When rotation is detected, the controller can control the main body to drive at low speed.

In addition, the second detection sensor may be provided to detect the side of the boom, and may be provided to enable only low-speed driving when the boom is rotated more than 60 degrees from the telescopic master.

In addition, the main body is equipped with a gyro sensor that detects the slope when driving on a slope, and if the slope of the slope is more than 10 degrees, the telescopic master and boom can be equipped to only descend.

According to the aerial work vehicle having a four-way extendable outrigger of the present invention, during aerial work using the aerial work vehicle, the first outrigger is pulled outward from the crawler side, and if necessary, the second outrigger is pulled out from the drawn out first outrigger. As the trigger is further drawn outward and expanded, a large support area is formed on the side of the vehicle body, that is, in the width direction. This has the effect of preventing a tipping of the work vehicle during work at heights and preventing a vehicle rollover accident.

In addition, according to the present invention, the workbench provided on a drivable aerial work vehicle so that the workbench on which the worker rides for aerial work can be moved straight up and down on the workvehicle, as well as the height can be adjusted by rotating the workbench up and down, The movement of the work vehicle according to the work position is controlled and moved according to the height or position of the workbench, which has the advantage of preventing rollover accidents of the work vehicle and thus maximizing worker safety.

1 is a rear configuration diagram of an aerial work vehicle according to the present invention.
Figure 2 is an enlarged view of the first outrigger being withdrawn from the aerial work vehicle according to the present invention.
Figure 3 is an enlarged view of a state in which the second outrigger is pulled out from the first outrigger according to the present invention.
Figure 4 is a side configuration diagram of an aerial work vehicle according to the present invention.
Figure 5 is a diagram of the telescopic master being moved upward in the aerial work vehicle according to the present invention.
Figure 6 is a diagram showing the boom of the workbench rotated upward in the aerial work vehicle according to the present invention.
Figure 7 is a diagram showing the operating state of the workbench while the aerial work vehicle according to the present invention is stopped at an incline of less than 10 degrees.
Figure 8 is a diagram of the aerial work vehicle according to the present invention in a state where the work platform is only lowered while stopped on an incline of 10 degrees or more.

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

The terms used in the present invention are terms defined in consideration of the functions in the present invention, and may vary depending on the intention or custom of the user or operator, so the definitions of these terms are defined in accordance with the technical details of the present invention. It should be interpreted as a concept.

In addition, the embodiments of the present invention do not limit the scope of the present invention, but are merely illustrative of the components presented in the claims of the present invention, and are included in the technical idea throughout the specification of the present invention and are included in the claims. This is an embodiment that includes components that can be replaced as equivalents in the components.

Additionally, optional terms in the examples below are used to distinguish one component from another component, and the components are not limited by the terms.

Accordingly, when describing the present invention, detailed descriptions of related known technologies that may unnecessarily obscure the gist of the present invention are omitted.

1 to 8 are diagrams showing an aerial work vehicle according to the present invention and a four-way extendable outrigger configured thereto.

As shown in FIGS. 1 and 4, the aerial work vehicle 100 according to the present invention is composed of a plurality of frames and has a body that can be driven by a pair of crawlers 120 rotatably installed on both left and right sides, respectively. It includes a body, that is, a main body 110, and a work table 400 that rotates in place and moves up and down on the main body 110.

Here, the aerial work vehicle 100 as described above is designed to enable work at height by moving the workbench 400 upward. In this embodiment, the aerial work vehicle 100 is used for agricultural aerial work mainly used in orchard farms. This is explained using a vehicle as an example.

This main body 110 is equipped with a power source and a power transmission means (not shown) that transmits the power generated from the power source to the crawler 120.

In addition, a cover plate 121 is provided on the outer side of the crawler 120 to cover the crawler 120 and to which the rotation axis of each running wheel of the crawler 120 is rotatably coupled.

Meanwhile, outriggers are formed on the front, rear, and both sides of the main body 110 to rotate and unfold from the outer surface of the main body 110 toward the ground.

These outriggers may be operated individually, or the front and rear outriggers or outriggers on both sides may be synchronized and operated, or all outriggers provided on all four sides of the main body may be synchronized and operated as one. It could be.

In particular, among the outriggers, front and rear outriggers are provided on the front and rear of the main body 110, respectively, and outriggers on both sides are provided on the cover plate 121 of the crawler 120, so that the front and rear outriggers of the main body 110 , Since both the outriggers provided on the rear and both sides have the same structure, the front and rear outriggers and the outriggers on both sides will be explained together below.

As shown in Figures 2 and 3, the outrigger configured in this way includes a first outrigger ( 130)(130'), and second outriggers 160 (160') provided to be rotated toward the ground from the first outriggers 130 (130').

First, as shown in FIG. 2, the first outriggers 130 and 130' include a plurality of rotating arms 151 and 151', connection frames 152 and 152', and a first cylinder 140. ) (140'), including the first support (150) (150').

The plurality of rotating arms 151 and 151' have one end hinged to the front and rear of the main body 110 and the cover plates 121 of both crawlers 120, and the other end is a first support 150 to be described later. It is provided to be fixed at (150'). These pivoting arms 151 (151') are formed in a straight section from one end to the center, and are bent in a curved section approaching a right angle from the center to the other end.

Accordingly, the rotation arms 151 (151'), which are rotated on the front and rear surfaces of the main body 110 and the cover plate 121, are perpendicular to the front and rear surfaces of the main body 110 and the cover plate 121, as will be described later. By having the first supports 150 (150') in contact with the ground, excessive rotation of the pivoting arms (151) (151') can be prevented, and the pivoting arms (151) (151') allow the first outrigger ( 130) It is possible to provide structural stability when (130') is rotated.

In addition, the connection frames 152 and 152' are frames that connect both pivoting arms 151 and 151', and may be provided in the curved section of the pivoting arms 151 and (151'). ) (151') has the advantage of minimizing the rotation radius of the first cylinder (140) (140'), which will be described later. If the turning radius of the first cylinder 140 (140') increases, interference may occur with surrounding parts constituting the main body 110 and the crawler 120, so the first cylinder 140 (140') It is best to minimize the turning radius.

The first supports 150 and 150' are fixed and provided to connect the other ends (tip ends) of the two pivoting arms 151 and 151'. Both ends of the first supports 150 and 150' are bent upward based on the unfolded state, that is, the state in contact with the ground. As a result, the first supports 150 and 150' can be prevented from being completely immersed in muddy farmland, thereby reducing the operating load on the first cylinders 140 and 140', which will be described later.

In addition, between the first supports 150 (150') and the connection frames 152 (152'), a plurality of connection brackets 153 (153') are provided to support and reinforce the first supports 150 (150) (150'). This is provided. These connection brackets (153) (153') are formed in a shape corresponding to the curved section of the pivoting arm (151) (151'), and both ends thereof are connected to the connection frame (152) (152') and the first support (150), respectively. It is provided to be fixed at (150').

In addition, the first cylinder 140 (140') is rotatably provided on the side of the main body 110 via mounting brackets 142 (142'), and the first cylinder 140 (140') Support rods 141 and 141' are provided at the front to allow entry and exit, and the support rods 141 and 141' are hinged to the connection frames 152 and 152' to rotate relative to each other.

Accordingly, when the support rods 141 (141') are withdrawn from the first cylinders (140) (140'), the first supports (150) (150') of the first outriggers (130) (130') are rotated into the rotating arm. (151) (151') rotates to the outside of the crawler (120) and comes into contact with the ground. Conversely, when the support rods (141) (141') are inserted into the first cylinder (140) (140'), the first outrigger The first supports 150 and 150' of (130) (130') are rotated back toward the main body 110 and folded to the outside of the crawler 120.

Therefore, the first supports 150 and 150' of the first outriggers 130 and 130' spread outward from both crawlers 120 and come into contact with the ground, thereby stably and firmly supporting the aerial work vehicle 100. You can do it.

Meanwhile, as shown in FIGS. 3 and 5, the second outriggers 160 and 160' are configured to rotate and expand outward from the first outriggers 130 and 130'.

These second outriggers 160 and 160' are hinged to the second cylinders 170 and 170' and the first outriggers 130 and 130' respectively rotatably provided in the main body 110. Meanwhile, it includes second supports 180 and 180' that are rotated on the first outriggers 130 and 130' by the second cylinders 170 and 170' and are in contact with the ground.

Here, the second supports 180 (180') include a plurality of vertical frames (180a) (180a') and a plurality of horizontal frames (180b) (180b') connecting the plurality of vertical frames (180a) (180a'). ) can be formed in the form of a square plate.

These second supports (180) (180') are rotatably provided on the connection frames (152) (152') of the first outriggers (130) (130') via hinge brackets (181) (181'). do. At this time, the hinge brackets 181 (181') are formed to have a greater radius of curvature than the connecting brackets (153) (153') of the first outriggers (130) (130'), and these hinge brackets (181) One end of (181') is fixed to the connection frame (152) (152'), and the other end is provided to be hinged to the second support (180) (180').

In addition, the second cylinders 170 (170') are rotatably provided on the lower surfaces of the connection frames (152) (152') of the first outriggers (130) (130'), and the second cylinders (170) (170) '), support rods 171 and 171' are provided on the front of the support rods 171 and 171' to allow entry and exit, and the support rods 171 and 171' are hinged to the center of the second supports 180 and 180' so that they rotate relative to each other. It is provided.

Accordingly, when the support rods 171 (171') are pulled out from the second cylinders (170) (170'), the second supports (180) (180') of the second outriggers (160) (160') are connected to the hinge bracket. (181) (181') is rotated outward around the axis and comes into contact with the ground, and when the support rods (171) (171') are inserted into the second cylinders (170) (170'), the second supports (180) (180) ') is rotated in reverse toward the first outrigger (130) (130') around the hinge brackets (181) (181') and folded.

Accordingly, the second supports 180 and 180' of the second outriggers 160 and 160' are spread outward from the first supports 150 and 150' of the first outriggers 130 and 130'. As a result, the contact area with the ground expands further outward, making it possible to stably and firmly support the aerial work vehicle 100.

In particular, the second supports 180 and 180' of the second outriggers 160 and 160' have a square plate shape consisting of interconnected longitudinal and transverse frames 180a, 180a', 180b and 180b'. By being formed, the contact area in contact with the ground is further expanded, making it possible to support the aerial work vehicle with a more solid support force.

Meanwhile, the work platform 400 of the aerial work vehicle 100 may be provided with a plate-shaped step for a worker to board, and a fence around the step to prevent the worker from leaving. The fence of the workbench 400 may be provided with rod-shaped frames, a plate with an appropriate thickness, or a square frame, and a boom 300, which will be described later, is coupled to the rear of the fence, and the other The side may be provided with an entrance that opens to allow workers to enter and exit.

In addition, the main body 110 is provided with a telescopic master 200 that moves the work table 400 vertically upward or vertically downward, and a boom 300 is rotatably coupled to the telescopic master 200, and the boom ( A work table 400 is coupled to the front end of 300).

The telescopic master 200 is composed of a stretchable multi-stage boom, and the multi-stage boom includes a first-stage boom 210 coupled to the upper surface of the main body 110, as shown in FIGS. 1 and 5, and a first-stage boom. It includes a second-stage boom 211 that is slidably coupled to (210) and a third-stage boom (212) that is slidably coupled to the second-stage boom (211).

In this embodiment, it is exemplified that the multi-stage boom of the telescopic master 200 consists of up to a 3-stage boom, but the number of booms can be increased or decreased as needed.

Meanwhile, in the telescopic master 200 as described above, the first-stage boom 210 is equipped to have the largest diameter, the third-stage boom 212 is equipped to have the smallest diameter, and the second-stage boom 211 is provided to have the first stage. It is provided to have an intermediate diameter between the boom 210 and the third stage boom 212.

As a result, the second-stage boom 211 is inserted into the first-stage boom 210, which has the largest diameter, and the third-stage boom 212 is inserted into the second-stage boom 211, and the third-stage boom 212 ) is provided in combination with the boom stand 300 of the work bench 400, which will be described later.

In addition, the inside of the telescopic master 200, that is, the inside of the three-stage boom 212, is provided with a cylinder means (not shown) for expanding and contracting the telescopic master 200, and the cylinder means is connected to the cylinder body and the main body 110. , and includes a cylinder rod that enters and exits the cylinder body and is hinged to the three-stage boom (212).

In addition, between each boom 210, 211, and 212, there is a wire rope for pulling out (not shown) and a wire rope for pulling in (not shown) that pulls out and extends each boom or retracts each boom when the cylinder is operating. City) is connected and provided.

Therefore, in the telescopic master 200 as described above, when the cylinder means is extended, the third-stage boom 212 is pulled upward and moved upward within the first-stage boom 210, and at the same time, the second-stage boom 211 is also a first-stage boom. It is drawn upward and moved upward within (210), and when the cylinder means is reduced, the third-stage boom 212 is drawn into the first-stage boom 210 and moves downward, and at the same time, the second-stage boom 211 is also a first-stage boom. (210) It is drawn into the interior and moved downward.

Meanwhile, a boom 300 for rotating the work table 400 up and down is rotatably coupled to the 3-stage boom 212 of the telescopic master 200 that expands as described above.

This boom stand 300 is equipped with an upper frame 310 and a lower frame 311, and the front and rear ends of the upper frame 310 and lower frame 311 are respectively connected to the rear of the fence of the workbench 400 and the three-stage boom. It is provided hinged to the front of (212).

At this time, an “ㄴ” shaped fixing bracket 312 is fixed to the front of the three-stage boom 212, and the upper frame 310 and lower frame 311 are rotatable on this fixing bracket 312. It is provided in combination, and between the upper frame 310 and the lower frame 311, both ends are connected to the fixing bracket 312 and the work table 400, respectively, and a hydraulic cylinder rotates the work table 400 and the boom stand 300. (330) is provided.

Therefore, the work table 400 and the boom stand 300 are moved up and down as one body to adjust the height, and in this state, the boom stand 300 is moved from the third stage boom 212 of the telescopic master 200. As it rotates up and down, the position of the work table 400 is raised further above the third stage boom 212 or lowered to a position lower than the third stage boom 212.

In particular, the height of the worktable 400 as described above is quickly adjusted by the telescopic master 200, and fine height adjustment is made by rotating the worktable 400 in this height-adjusted state.

Meanwhile, the telescopic master 200 as described above is provided with a first detection sensor 220 that detects the entry and exit of the multi-stage boom, and a second detection sensor 320 that detects the rotation of the boom stand 300.

This first detection sensor 220 is fixedly installed on the first stage boom 210 of the telescopic master 200 and is provided to detect the entry and exit of the third stage boom 212 drawn upward from the first stage boom 210, The second detection sensor 320 is fixedly installed on the three-stage boom 212 and is provided to detect the boom bar 300 rotating up and down on the three-stage boom 212.

In particular, the first and second detection sensors 220 and 320 are proximity sensors that are turned on in a close state between the lowered third-stage boom 212 and the boom stand 300 and then connected to the third-stage boom 212 and When the boom 300 is rotated and spaced apart, it is turned off and the upward withdrawal of the 3-stage boom 212 and the upward rotation of the boom 300 are detected, and the detection signal is sent to the controller provided in the main body 110. (not shown) is output.

Then, the controller controls the driving of the aerial work vehicle 100 according to the first and second detection sensors 220 and 320.

That is, when the withdrawal or rise of the three-stage boom 212 is detected by the first detection sensor 220 (the detection signal of the first detection sensor 220 is off), the controller operates the crawler 120 of the main body 110. It is locked and controlled in a state where it cannot be driven, and when the boom 300 of the workbench 400 is rotated upward at a certain angle on the 3-stage boom 212 by the second detection sensor 320 (the second detection sensor ( 320 (detection signal off state) The crawler 120 of the main body 110 is controlled to enable only low-speed driving.

These first and second detection sensors 220 and 320 may be replaced with limit switches, but for more precise operation and control, it is preferable to use proximity sensors.

And, to explain the specific installation structure of the first and second detection sensors 220 and 320, the first detection sensor 220 is installed on the upper part of the first stage boom 210 and connects the third stage boom 212 most closely. It is equipped to detect at the position, and the second detection sensor 320 is installed on the fixing bracket 312 of the three-stage boom 212 and is equipped to detect the boom bar 300 rotating on the fixing bracket 312 at the closest position. do.

In particular, the second detection sensor 320 is installed on the fixing bracket 312 to detect the side of the boom 300, and specifically, as shown in FIGS. 4 and 6, the second detection sensor 320 is provided to detect the side of the upper frame 310 among the frames constituting the boom 300.

Of course, the second detection sensor 320 may be provided to detect the side of the lower frame 311 of the boom stand 300, but in this case, the hydraulic cylinder 330 that rotates the work table 400, the hydraulic cable, and the wire cable Considering that the back sags downward between the upper frame 310 and the lower frame 311 of the boom stand 300, the second detection sensor 320 moves closer to the upper frame 310 than the lower frame 311. Being equipped to detect the side has the advantage of preventing malfunction of the second detection sensor 320 as much as possible.

Meanwhile, the second detection sensor 320 detects the side of the upper frame 310 of the boom 300, thereby adjusting the position of the second detection sensor 320 to a width corresponding to the upper and lower width of the upper frame 310. It can be adjusted at (312). Accordingly, the aerial work vehicle 100 can travel normally within the vertical width of the upper frame 310 even if the boom 300 is rotated upward.

In particular, the installation location of the second detection sensor 320 is such that the upper frame 310 of the boom 300 passes the second detection sensor 320 and the detection signal is turned off when the telescopic master 200 is not extended. It can be set to a height of 1.5 m above the ground, and at this time, the boom 300 is rotated about 80 degrees from the telescopic master 200.

Accordingly, when the boom 300 is rotated more than 80 degrees from the telescopic master 200, only low-speed travel is possible. That is, when the boom 300 is rotated more than 80 degrees, the workbench 400 moves to a position equal to the height of the telescopic master 200 (i.e., a height of 1.5 m or more from the ground when the telescopic master 200 is not extended). The center of gravity is raised, and in this state, when driving normally, a large shaking may occur in the main body 110, which causes the center of gravity to be tilted to one side due to the movement of the worker on the workbench 400. The aerial work vehicle 100 can overturn.

Therefore, when the boom 300 is rotated by more than 80 degrees in the original state where the telescopic master 200 is not extended, the aerial work vehicle 100 is controlled to run at a low speed of less than 1 km/h.

In particular, in the driving control of the aerial work vehicle 100 as described above, the withdrawal of the telescopic master 200 is set as the first consideration, and the rotation of the boom 300 is set as the second priority.

In other words, the configuration that mainly controls the height of the workbench 400 is the telescopic master 200, and the height of the workbench 400 is adjusted upward from several meters to more than 10m by the telescopic master 200, thereby reducing the weight accordingly. Since the center of gravity is raised and there is a high risk of a rollover accident, the aerial work vehicle 100 must be controlled so that it cannot travel when the telescopic master 200 is withdrawn, regardless of the rotation of the boom 300.

In addition, the aerial work vehicle 100 as described above can run on a slope, and the main body 110 is equipped with a gyro sensor (not shown) that can measure and display the slope when driving on a slope.

In this way, when the aerial work vehicle 100 is driven on a slope, when the slope θ2 of the slope is more than 10 degrees, the telescopic master 200 and the boom bar 300 are controlled by the controller to only descend rather than rise, as shown in FIG. 8. do.

Accordingly, the safety of workers can be further improved by preventing the worktable 400 from rising on slopes.

In other words, when working while the aerial work vehicle 100 is stopped on a slope, the worktable 400 can be moved up and down, and this movement of the worktable 400 up and down occurs at an inclination of less than 10 degrees (as shown in Figure 7). This is done only when the aerial work vehicle is stopped on a slope (θ1) with a slope (θ1), and on a slope with a slope (θ2) of 10 degrees or more, the work platform 400 is controlled so that it cannot be raised but can only be lowered, as shown in FIG. do.

The operating relationship of the aerial work vehicle according to the present invention as described above will be described.

First, the aerial work vehicle 100 can perform overall operations, such as driving and raising and lowering the work platform 400, by operating a control device such as a remote control or joystick.

In particular, in the original state where the telescopic master 200 and the boom stand 300 of the aerial work vehicle 100 are completely lowered, the first and second detection sensors 220 and 320 are detected to be on, and in this state, the aerial work vehicle 100 is in an on-state state. Since the vehicle 100 can drive normally, mobility to quickly move to the work location is secured.

Then, the aerial work vehicle 100 moved to the work site is stopped, and only in the stopped state are the 2nd and 3rd stage booms 211 and 212 from the 1st stage boom 210 of the telescopic master 200 as shown in FIG. 5. It can be pulled out together and its length can be extended, and the work table 400, which is connected as a boom 300 to the 3-stage boom 212 of the telescopic master 200, which rises the highest, can be quickly moved to the height of the fruit tree.

In addition, the work table 400, which has risen to the height of the fruit tree to be worked on, is rotated upward on the three-stage boom 212 as shown in FIG. 6 to precisely adjust the height of the work table 400 to a high work position. It gets moved.

In this state, the first and second detection sensors 220 and 320 are detected as off, and the aerial work vehicle 100 is fixed in a state where it cannot move, so work can be performed safely.

In addition, during work at height like this, the first outriggers 130 and 130' are spread outward and come into contact with the ground at the front, rear and both sides of the aerial work vehicle 100, and in addition, the second outrigger 160 ) (160') is expanded outward from the first outriggers (130) (130') and comes into contact with the ground to firmly support the aerial work vehicle (100), thereby expanding the first and second outriggers (130) (130') )(160)(160') allows work at heights to be carried out safely.

Afterwards, when moving at a height work is completed, the telescopic master 200 is pulled out, so movement of the aerial work vehicle 100 is maintained.

Therefore, in order to move the aerial work vehicle 100, the telescopic master 200 must be completely lowered so that the third-stage boom 212 is detected by the first detection sensor 220 installed on the first-stage boom 210. Movement is only possible in this state.

Also, in this state, if the second detection sensor 320 is detected to be off, the aerial work vehicle 100 can only drive at low speeds, and if the second detection sensor 320 is detected to be on, the work platform 400 Since it has been lowered to a safe position, normal driving is possible.

In addition, the aerial work vehicle 100 as described above can travel on slopes, and can move the work platform 400 up and down while stationary even on slopes.

However, as shown in Figure 7, when the slope of the slope is less than 10 degrees (θ1), the work platform 400 can be moved up and down only when the aerial work vehicle 100 is stopped, and as shown in Figure 8, the slope of the slope is When is 10 degrees or more (θ2), the worktable 400 cannot move upward and is controlled to only move downward, so that workers on the worktable 400 can be more safely protected from safety accidents such as vehicle overturns.

Although the present invention has been described in detail through specific examples, this is for detailed explanation of the present invention, and the present invention is not limited thereto, and can be understood by those skilled in the art within the technical spirit of the present invention. It is clear that modifications and improvements are possible.

All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

100: work vehicle 110: main body
120: Crawler 121: Cover plate
130,130': 1st outrigger 140,140': 1st cylinder
141,141': Support rod 142,142': Mounting bracket
150,150': First support 151,151': Rotating arm
152,152': Connection frame 153,153': Connection bracket
160,160': 2nd outrigger 170,170': 2nd cylinder
171,171': Support rod 180,180': 2nd support rod
180a,180a': Vertical frame 180b,180b': Horizontal frame
181,181': Hinge bracket 200: Telescopic master
210,211,212: Boom 220: First detection sensor
300: Boom 310,311: Frame
312: fixing bracket 320: second detection sensor
330: Hydraulic cylinder 400: Workbench
θ1: Slope of slope less than 10 degrees
θ2: Slope of 10 degrees or more

Claims (7)

An aerial work vehicle including a driveable main body and a boom provided on the main body to move the workbench up and down,
It includes a first outrigger provided to be rotated toward the ground at the front, rear, and both sides of the main body, and a second outrigger provided to be rotated from the first outrigger toward the ground,
The second outrigger is hinged to the first outrigger and a second cylinder rotatably provided at the front, rear, and both sides of the main body, and is rotated on the first outrigger by the second cylinder to contact the ground. 2, while including supports,
The main body is equipped with a telescopic master having a multi-stage boom that is connected to the boom of the workbench and moves the boom and the workbench up and down,
The telescopic master is equipped with a first sensor that detects the entry and exit of the multi-stage boom, and when the first sensor detects the withdrawal of the multi-stage boom, the controller locks the main body and controls it so that it cannot drive.
In claim 1,
The first outrigger is provided with a plurality of pivotable arms on the front, rear, and both sides of the main body, respectively,
The pivoting arm on one side is provided with a connection frame that interconnects the plurality of pivoting arms,
A first cylinder is provided to be rotatable at the front, rear, and both sides of the main body to rotate the connecting frame and the rotating arm,
An aerial work vehicle that connects a plurality of rotating arms and is provided with a first support that is rotated by a first cylinder and is in contact with the ground.
delete delete In claim 1,
The boom is hinged to the telescopic master and rotates to rotate the workbench up and down,
The telescopic master is equipped with a second sensor that detects the rotation of the boom,
An aerial work vehicle where the controller controls the main body to drive at low speed when the second detection sensor detects upward rotation of the boom.
In claim 5,
The second detection sensor is equipped to detect the side of the boom, and when the boom is rotated more than 60 degrees from the telescopic master, it is a high-altitude work vehicle equipped to only drive at low speeds.
In claim 5,
This aerial work vehicle is equipped with a gyro sensor that detects the slope when driving on a slope, and the telescopic master and boom only descend when the slope of the slope is more than 10 degrees.

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