JPH08337396A - Vehicle for high lift work - Google Patents

Abstract

PURPOSE: To enhance the working scope in compliance with various sorts of works by forming a gondola boom in such a structure that a gondola is mounted at the tip of boom member capable of revolving and elevating/sinking or in addition thereto expanding and shrinking, and arranging so that the gondola boom can be installed on a deck removably. CONSTITUTION: A deck 12 is installed at the tops of links 7a, 7b pivoted in X-form. A gondola 19 which operator gets on, is coupled with a boom base 15 through a boom 20 and a rod 21, and a hydraulic cylinder 22 is interposed between the middle part of the boom 20 and the boom base 15, and therewith a gondola boom member G is formed. The gondola boom member G is removably detained with the deck 12 in three detention positions a, (b), c. The supporting part of the gondola boom member G is pivoted in the central part of a base frame 14 in approx. T-form viewed on the plan in such a way that a rotary shaft 15a at the bottom of the boom base 15 can revolve to the left and right centering on point (A).

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to the construction of an aerial work vehicle.

[0002]

2. Description of the Related Art Conventionally, an aerial work vehicle has been used for pollination, fruit picking, bagging, etc. in an orchard, transportation of parts in a factory, storage on shelves, assembly work, and outdoors in high places. It is used for maintenance work. For example, in the case of work in an apple orchard, the tree shape is a method called large tree tailoring in which a tree height H is H = 5 to 6 m and a tree width W is W = 10 to 12 m, as shown in FIGS. As shown in FIGS. 15 and 16, using a rootstock, the tree height H ′ is H ′ = 3 to 4 m, and the tree width W ′ is W ′.
= 3 to 4 m, L between trees is L = 3 to 4 m, space X for agricultural machinery is X = 4 to 5 m, and there are two methods of relatively densely planting and increasing the yield per unit area. In the former case, it is more advantageous to use a boom-type aerial work vehicle, which will be described later, and it is possible to work by inserting between the branches. In the latter case, it is advantageous to use a deck-type aerial work platform, between the rows of trees (within the width of X)
It is possible for two workers to ride on the same road and work simultaneously on the left and right, and place many containers.

In the case of the boom type of the aerial work vehicle, as shown in FIG. 17, it has an air-cooled gasoline (not shown) as a drive source, a main clutch for traveling, and a transmission 2 ', The transmission 2'has a steering clutch and a brake (not shown) for steering, and traveling is performed by a rubber crawler 3'driven by a drive sprocket. A boom 5 ', a link 6', and a lower end of a hydraulic cylinder 10 'are pivotally connected to the main frame 1', and a gondola 7'on which an operator rides is supported on upper ends of the boom 5'and the link 6 '. ing. The boom 5'and the link 6'are substantially parallel links, and the gondola 7'is configured to move up and down in the horizontal direction with respect to the ground by the vertical movement of the boom 5 '. In addition, a hydraulic cylinder (not shown) for turning the boom 5'is provided in the drive case 11 'so that the gondola 7'and the boom 5'can be turned to the left and right with respect to the main frame 1'. There is.

In the case of fruit tree work, the drive unit is operated to approach the tree, and the tree is approached by the hydraulic cylinder 10 '.
Also, the hydraulic cylinder for turning is operated, and the boom 5'is moved up and down or turned to move the gondola 7'to a required portion. A control device 8'for the machine is arranged in the front part of the gondola 7 ', and is configured to control all of the machine there. In addition, a container mounting portion 9'is extended horizontally in a lateral direction of the gondola 7 '. In this type of aerial work vehicle, since the weight of the gondola 7'on which the operator rides is relatively small, the gondola 7'is turned sideways so that the main frame 1'and the like are placed under the tree K as shown in FIG. The gondola 7'can be brought close to the center of the tree K without contacting the tree 12 ', and since the area of the gondola 7'is small, the work can be performed without damaging the tree K. Further, a shelf for supporting an operator, a small chair, or the like can be easily attached to the gondola 7 ′, so that the body can be put into a comfortable posture for the work. Furthermore, the parts that control the machine are concentrated in the front part of the gondola 7 ', and there is no loss of time in operating the machine.

Further, as shown in FIG. 19, a deck-type aerial work vehicle is a type in which a workbench moves up and down vertically and is called a deck type. This type is a small workbench (slide plate) that can be stored in the deck as a means to approach trees.
Is hydraulically or electrically driven so as to project to the left and right. The driving method is almost the same as the previous boom type, and the lower end of the substantially X-shaped link mechanism 3 ″ is pivotally connected to the main frame 1 ″, and the hydraulic cylinder 2 ″ is extended / contracted to move the deck 4 ″ up and down. Is configured as follows. Further, a slide plate 5 ″ is fitted in the deck 4 ″ so as to project in the left-right direction. The size of the deck 4 "is
Two people can comfortably get in, and can be loaded as a cargo at the lowest position of the deck 4 ", so that it can be used as a transport vehicle.
It has a wide workbench and can carry out a wide range of work in one place without moving the entire work vehicle.It is especially effective for the above-mentioned large tree tailoring, and it can be used by two people, so it is effective when busy. Therefore, it exerts its power at the time of harvest when the load of luggage is large.

[0006]

However, in the prior art as described above, depending on the work or the situation of the garden, the above-mentioned 2
There was a problem that we had to have different types of orchard work platforms. Also, in the orchard aerial work vehicle of the type shown in FIG. 17, the harvest container must be made small in order to reduce the weight of the gondola 7 ', and therefore the boom 5'is frequently moved up and down. , The harvest must be put down on the ground, and since only one person can ride in the gondola 7 ', two people cannot work, and the whole machine must be moved for work outside the reach of the gondola 7'. However, there is a problem in that it takes time to work and is uneconomical in terms of running cost. Also, the orchard aerial work vehicle of the type shown in FIG.
Is wide and the upper structure is heavy, the position of the center of gravity is relatively high, the amount of overhang of the slide plate 5 "cannot be increased, the accessibility to the tree K is poor, and a fall prevention safety belt is used during work. There was a problem that it was a standing posture work with it attached and could not take a comfortable work posture.

[0007]

The problem to be solved by the present invention is as described above, and the means for solving this problem will be described below. That is, in an aerial work vehicle in which a deck is provided on the running part via an X-shaped link, and the deck can be raised and lowered, the vehicle can be swung and raised or lowered on the deck, or
A boom base supporting a gondola / boom member, which is provided with a gondola at the tip of a boom member that can be swung, raised / lowered, and stretchable, is rotatably provided on a base frame that is T-shaped in plan view, and the end of the base frame is supported. Locking parts are provided at three places, and they are detachably mounted on the locking part on the deck. Also, the locking part is composed of a pin and a hook, and the engaging center of the pin and the pivotal fulcrum of the hook are eccentric. It was made.

[0008]

Next, the operation will be described. With the structure according to claim 1, the gondola / boom member can be attached / detached, and when removed, it becomes a deck type aerial work vehicle, on which a large number of work vehicles and storage containers can be mounted. Can work. Attaching the gondola boom member allows the work vehicle to ride on the gondola and work in tight spaces. Further, since there are three locking positions, it is easy to position the gondola / boom member when attaching it to the machine body, and it is possible to reduce rattling of the gondola / boom member after attachment. Further, since the direction of the locking portion is different, even if a horizontal load is applied from any direction, the load can be supported by the mounting portion having high strength. Further, according to the structure of the second aspect, the heavy gondola boom member can be attached to and detached from the machine body only by the locking bolts. Claim 3
If you try to pull the pin upwards,
The load is applied to the hook in the direction that prevents it, and the lock can be secured.

[0009]

EXAMPLES Next, examples will be described. 1 is an overall side view of an aerial work vehicle of the present invention, FIG. 2 is an overall plan view of the same, FIG. 3 is a side view showing a working state when a gondola boom member is attached, and FIG. A side view showing a state in which the gondola / boom member is removed and used as a deck-type aerial work vehicle, FIG. 5 is a plan view of the same, and FIG. 6 is a side view showing a state in which the gondola / boom member is detached. 7
Is a rear view of the aerial work vehicle seen from the Z position shown in FIG. 6, FIG. 8 is a rear view of the deck mounting portion, FIG. 9 is a side view of the same, and FIG. 10 shows a combined state of the deck mounting portion. The plan view,
11 is a rear view of the same, FIG. 12 is a side view of the same, FIG. 13 is a plan view of a large tree made from an orchard, and FIG.
Is a side view, FIG. 15 is a plan view of Dwarf Garden, FIG. 16 is a side view, FIG. 17 is a perspective view of a boom type aerial work vehicle, and FIG. 18 is a boom type aerial view. FIG. 19 is a perspective view showing a work situation in the work vehicle, and FIG. 19 is an overall perspective view of the deck type aerial work vehicle.

First, the overall structure of the aerial work machine will be described. As shown in FIGS. 1 and 2, the engine 1 is arranged on the main frame 6 at the rear of the machine body, and in the case of the present embodiment, two sets of HSTs (one set for each crawler) are used as a steering device also serving as a transmission. Type transmissions 3 and 3 are provided. From the engine 1 to the HST transmission 3
・ Power is transmitted through the V belt 2 on the input shaft of 3.
The rubber crawler 5 is driven via the drive sprocket 4 to travel. The turning is performed by changing the reduction ratio of the left and right HST type transmissions 3 and 3 to give a speed difference to the left and right rubber crawlers 5 and 5. The power of the engine 1 is transmitted to a PTO shaft (not shown) via a power transmission mechanism (not shown) to drive a work machine pump and a generator and operate various actuators.

Further, a track frame 8 is fixedly provided on the lower side of the main frame 6 and lower roller wheels 9, 9, ..., Upper roller wheel 11, and idler wheel 10 are arranged around the track frame 8. The rubber crawler 5 is wound around this and driven by the drive sprocket 4. Further, rails are provided at the front portions on the left and right main frames 6, the lower ends of the links 7a are slidably fitted back and forth, and the lower ends of the links 7b are pivotally connected to the rear portions of the left and right main frames 6, so that the links 7a. The central portion of 7b is pivotally connected in a substantially X-shape by a pivoting pin 7c so as to intersect with each other to form a lifting link mechanism 7. Also, the links 7a and 7b
At the upper end of the main frame 6 below the deck 12
Is installed as well. And the hydraulic cylinder 1
3 is interposed between the elevating link mechanism 7 and the track frame 8, and the deck 12 is lifted as shown in FIG. 3 by the extension of the hydraulic cylinder 23.

As shown in FIG. 1, a gondola 19 on which an operator rides is connected to a boom base 15 via a boom 20 and a rod 21, and a hydraulic cylinder 22 is interposed between a midway portion of the boom 20 and the boom base 15. Being a gondola
It constitutes the boom member G. As shown in FIG. 2, the deck 12 has the gondola boom member G at the locking position a.
-It is detachably locked at three positions b and c by the method described later. The structure of the supporting portion of the gondola / boom member G is as shown in FIGS. 1 and 2, in which the rotating shaft 15a at the lower end of the boom base 15 rotates in the left-right direction at the center of the base frame 14 formed in a T-shape in plan view. Being movably linked,
It is configured so that it can be rotated about the point A. One end of a lever 16 is fixedly provided in the middle of the rotating shaft 15a below the boom base 15, and the other end of the lever 16 is pivotally connected to one end of an arc-shaped rod 17. The other end of the rod 17 is pivotally connected to a piston rod of a hydraulic cylinder 18, and the hydraulic cylinder 18 is a trunnion type, the base of which is pivotally supported by a pivot pin 38 to a stay fixed to the front of the base frame 14. The boom base 15 is rotated left and right by expanding and contracting the hydraulic cylinder 18.

The boom 20 and the rod 21 constitute a parallel link, and the gondola 19 is constructed so as to move up and down in parallel with the ground. When the hydraulic cylinder 22 extends, as shown in FIG. 3, the gondola 19 moves up, and when it contracts, the gondola 19 moves down. In addition, in front of the inside of the gondola 19, a control console 2 that can control the entire aircraft
The control console 23 enables control of traveling and steering of the machine body, raising and lowering of the lifting link mechanism 7, raising and lowering of the gondola 19, and turning.

As shown in FIGS. 3, 4 and 5, slide plates 24, 24 ... Are incorporated inside the deck 12. The slide plates 24, 24 ... Are configured so that they can be taken in and out in the left-right direction using a wire and a motor. For example, when the operator wants to approach the left side in the traveling direction of the vehicle, as shown in FIG.
・ ・ Use by extending to the left. With this configuration, the area of the workbench (deck 12) can be increased, and the inside of the tree can be approached. Further, a control console 25 for operating the vehicle is erected on the rear center of the deck 12. In the present embodiment, the control device employs a method of remotely controlling an electromagnetic valve, a motor, a solenoid, etc., which is not shown in the drawing but is compactly integrated and is provided between the gondola / boom member G and the deck 12. The wiring is connected by a collective connector, and the hydraulic circuit uses a self-sealing coupling so that it can be easily attached and detached. Although the number of slide plates 24, 24 ... Is four, the number is not limited.

Next, the gondola boom member G on the deck side
The configuration of the mounting portion of will be described. Engagement parts a, b, and c are arranged on the deck 12 and the left and right ends and the front end of the substantially T-shaped base frame 14. As shown in FIGS. 8 and 9, the structure of one engaging portion provided on the deck 12 side is that a mounting plate 37 is projected on the deck 12 (the engaging portion a is in the front-back direction, the engaging portion b. An engaging groove 37a is formed in the center of the upper portion of the mounting plate 37). A bolt 35 is pivotally supported on the lower portion of the mounting plate 37, and hooks 34, 34 are pivotally supported on both sides of the mounting plate 37 on the bolt 35. From the center of the engaging groove 37a, the hook 34.3
The center of rotation 4 is eccentric by a distance e. This is for securely locking the pin 36 protruding from the base frame 14 as shown in FIG. 11, and when the pin 36 tries to come out upward, the force applied to the hook 34 is the force of the engaging groove 37a. The pin 36 cannot move in the left-right direction in FIG. 11 because it is the direction connecting the center and the rotation center of the hook 34, and is stopped by the hook 34 in the up-down direction.
The pin 36 can hardly be displaced.

Further, the engaging portions on the side of the base frame 14 are arranged at the left and right ends and the front end, and one of them is formed in a substantially "U" shape in plan view as shown in FIGS. 10, 11 and 12. The fixed bracket 39 is fixedly mounted on the base frame 14, and the width of the bent both ends 39a, 39a is made wider than the width of the engaging part on the deck 12 so that it can be fitted between them. Both ends 39a 39a of 39
A pin 36 penetrates and is fixed by welding. The pin 36
Is fitted into the engaging groove 37a, the hook 34 is rotated upward as shown in FIG.
The base frame 14 and the deck 12 are fixed by tightening. In this way, the engaging portion a
Since the three points b and c are arranged orthogonally to each other, even if a horizontal load in the front-rear direction or the left-right direction is applied, the mounting plate 37 having a high strength is not received by the hook 34 having a relatively low strength. It can be supported with a simple structure and can be supported without rattling.

Further, arms 26 and 27 are provided on the rear surface of the left and right frames 14a of the base frame 14 so as to project to the left and right sides, and the arms 28 and 28 extend from the front portion of the base frame 14 to both sides.
・ 29 is projected, and the arm 26 ・ 27 and the arm 28 ・ 2
9 are arranged in parallel, and both ends project outward from the main frame 6. This arm 26.27.28.29
Stands S for attaching / detaching the gondola / boom member G to / from the deck 12 are attached to both ends of the. As shown in FIGS. 6 and 7, the stand S has a turnbuckle 32 having one end screwed onto the foot 33, and the other end of the turnbuckle 32 having the lower end of the inverted L-shaped mounting arm 30 screwed thereon. Has been done. The tip of the mounting arm 30 is the arm 26.
-Fit in 27, 28, 29 and locked with pin 31. In addition, the mounting arm 30 or the arms 26, 27.2
One of 8.29 is formed in a pipe shape, the other is inserted in the pipe, and each has a pin hole.

First, in such a structure,
When removing the boom member G, with the deck 12 slightly raised (about 10 cm), the arms 26 and 27 are removed.
・ Mounting arms 30 ・ 30 ・ at 4 locations on both ends of 28 ・ 29
Insert the tips of 30 and 30, align the positions of the pin holes, and fit and connect the locking pins 31, 31, 31 and 31. Then, the turnbuckles 32 screwed with the foot 33 are screwed into the ground side of each arm 30, and each turnbuckle 32 is rotated to press the respective foot 33 against the ground, thereby supporting the weight of the gondola / boom member G at four points. To do. This completes the preparation for removal. However, once the stand S is attached, the height can be known. Therefore, from the second time, the stand S is attached with the deck 12 raised a little more, and the deck 12 is lowered after releasing the hook 34 described later, and then each turn buckle. It is also possible to turn 32 to adjust horizontally.

Next, the locking bolts 35 of the hooks 34 at the three locking positions a, b, and c are loosened, the hooks 34 are removed from the pins 36, and the deck 12 is lowered to the lowest position. , When the boom base 15 moves away from the deck 12,
As shown in FIG. 6, the machine is moved backward and separated from under the gondola boom member G. In this way, when the gondola boom member G is removed, it becomes as shown in FIG. 4 and FIG. 5, and the work can be performed in the same manner as a conventional deck type aerial work vehicle, two people can work, and the wide deck 12 A large amount of crops can be loaded on top of. Further, when the deck 12 is at the lowest position, it can be used as a transport vehicle.

On the contrary, when the gondola / boom member G is attached, the reverse procedure described above is performed. The machine is inserted under the gondola / boom member G supported by the stand S so that the locking positions a, b, and c on the vehicle body side correspond to the position of the pin 36 of the gondola / boom member G. Guide the entire machine to. Next, bring down the hook 34 to remove the pin 3
It is confirmed that 6 is in a state of being fitted into the engaging groove 37a of the mounting plate 37. When it is confirmed, the deck 12 is gently lifted, and the pin 36 is fitted into the engaging groove 37a of the mounting plate 37. Next, the hook 34 is hooked on the pin 36 and the locking bolt 35 is tightened to lock the hook 34 at that position. Then, by removing the pin 31 and removing the stand S, a workable state is obtained. The stand arm member S is configured to be attached and stored in a place where it does not interfere with the operation of the machine during work.

[0021]

Since the present invention is constructed as described above,
It has the following effects. That is, as in claim 1, since the gondola / boom member is detachably provided on the deck, the gondola is provided with a gondola at the tip of a boom member that can be swung / elevated or swung / elevated / extendable.
When the boom member is removed, it becomes a deck type aerial work vehicle, and it is possible to work with a lot of workers and storage containers. Attaching the gondola boom member allows the operator to ride on the gondola and work in narrow spaces.
By attaching and detaching the gondola and boom members in this way, it is possible to adapt to various work and improve the work range,
Further, the cost can be reduced without separately purchasing the aerial work vehicle. Further, since the gondola / boom member G has the three locking positions a, b, and c in the orthogonal direction, rattling is less likely to occur, and firm engagement is possible. It has become less and easier to position and can be easily attached and detached.

Further, according to the second aspect of the invention, since the hook 35 is used at the connecting portion between the gondola / boom member G and the deck 12, the number of parts is reduced, and the operation is reliable and easy. Can be attached and detached.

Further, according to the third aspect of the invention, since the center position of the pin 36 is eccentric when engaged with the center of the locking bolt 35 which is the pivotal fulcrum of the hook 34, the pin 36 is raised. When the user tries to pull it out, a force is exerted on the hook 34 in a direction that prevents it, so that the lock can be secured.

[Brief description of drawings]

FIG. 1 is an overall side view of an aerial work vehicle for orchards according to the present invention.

FIG. 2 is likewise an overall plan view.

FIG. 3 is a side view showing a working state when a gondola / boom member is attached.

FIG. 4 is a side view showing a state in which the gondola / boom member is removed to be used as a deck-type aerial work vehicle.

FIG. 5 is a plan view of the same.

FIG. 6 is a side view showing a state where the gondola boom member is detached.

7 is a rear view of the aerial work vehicle as seen from the Z position shown in FIG.

FIG. 8 is a rear view of the deck mounting portion.

FIG. 9 is likewise a side view.

FIG. 10 is a plan view showing a combined state of deck mounting portions.

FIG. 11 is likewise a rear view.

FIG. 12 is likewise a side view.

FIG. 13 is a plan view of a tree made up of large trees in an orchard.

FIG. 14 is likewise a side view.

FIG. 15 is a plan view of a dwarf garden.

FIG. 16 is likewise a side view.

FIG. 17 is an overall perspective view of a boom-type aerial work vehicle.

FIG. 18 is a perspective view showing a work situation in a boom type aerial work vehicle.

FIG. 19 is an overall perspective view of a deck-type aerial work vehicle.

[Explanation of symbols]

 G Gondola / Boom member a / b / c Locking position e Eccentric distance 7 Link mechanism 12 Deck 14 Base frame 15 Boom base 18 Hydraulic cylinder 19 Gondola 20 Boom 21 Rod 22 Hydraulic cylinder 26/27/28/29 Arm 34 Hook 35 Locking bolt 36 pin 37 Mounting plate 37a Engagement groove

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Masaaki Nakazawa 1-1-1, Ishishiba, Matsumoto-shi, Nagano Ishikawajima Shibaura Machinery Co., Ltd. Matsumoto factory (72) Inventor Yuichi Ichioka 1-1-1, Ishishiba, Matsumoto-shi, Nagano No. Ishikawajima Shibaura Machinery Co., Ltd. Matsumoto Factory (72) Inventor Takashi Kaneko 1-1-1, Ishishiba, Matsumoto City, Nagano Prefecture Ishikawajima Shibaura Machinery Co., Ltd. Matsumoto Factory (72) Inventor Masao Nozawa 224 Naganumacho, Isesaki City, Gunma Prefecture No. 1 share company in Nozawa Manufacturing Co., Ltd. (72) Inventor Junichi Nozawa One share at 224 Naganuma-cho, Isesaki City Gunma Prefecture No. 1 share company in Nozawa Manufacturing Co., Ltd. (72) Katsuhiro Watanabe One share at 224 Naganuma-cho, Isesaki City Gunma Nozawa Manufacturing Co., Ltd. (72) Inventor Takanori Kawashima 2-64, Dosyo-cho, Yonago City, Tottori Prefecture (72) Inventor Tsukasa Nagaki Omiya City, Saitama Prefecture Shincho 1-40-2, Biological Specified Industrial Technology Research Promotion Organization (72) Inventor Mikio Ogawa 1-40, Nisshincho, Omiya-shi, Saitama Biological Specified Industrial Technology Research Promotion Organization (72) Inventor Yukito Fujii 1-40, Nisshin-cho, Omiya-shi, Saitama 2 Biological Specific Industrial Technology Research Promotion Organization

Claims (3)

[Claims] 1. In an aerial work vehicle in which a deck is provided on a running portion via an X-shaped link, and the deck can be raised and lowered, the deck can be swung and raised, or swung and raised and lowered.
A boom base supporting a gondola boom member is provided rotatably on a base frame configured in a T shape in a plan view.
An aerial work vehicle characterized in that locking portions are provided at three end portions of the base frame, and the locking portions on the deck are detachably provided. 2. An aerial work vehicle, wherein the engaging portion according to claim 1 is composed of a pin and a hook. 3. The aerial work vehicle according to claim 1, wherein the engagement center of the pin and the pivot fulcrum of the hook are eccentric.