JPH1160179A - Overhang plate lock mechanism of work vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lock a claw body and an engaging arm by merely turning a lock lever to an engaging position by constituting an overhang plate lock mechanism of a work vehicle in such a manner that the claw body is provided and protrudes in side parts or lower faces on both right and left sides of an overhang plate, an engaging arm which can move to the engaging position and a release position for the claw body is provided, and the engaging arm is interlocked and connected with the lock lever provided on a deck so as to engage the claw body with or disengage it from the engaging arm due to the turn of the lock lever. SOLUTION: In a work vehicle in which a deck 7 is provided on a self-running bogie 5 and an overhang plate 51 is provided in such a way that it can overhang more on a side in the horizontal direction than the deck 7, a claw body 59 is provided and protrudes in a side part or a lower face of the overhang plate 51, an engaging arm 63 which can move to an engaging position and a release position for the claw body 59 is provided, and the engaging arm 63 is interlocked and connected with a lock lever 65 provided on the deck 7 to engage the engaging arm with and disengage it from the claw body due to the turn of the lock lever. Moreover, a plurality of overhang plates are arranged in parallel, and the claw body is provided on each overhang plate to engage and disengage each overhang plate simultaneously due to the turn of the lock lever.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overhanging plate for an aerial work vehicle in which a deck is provided on a traveling carriage via an elevating device, and an overhanging plate is provided on the deck so that the working range can be expanded. The present invention relates to a configuration of an overhang lock device.

[0002]

2. Description of the Related Art Conventionally, fruit picking and harvesting, pollination, pruning, bagging and pest control in a high orchard, loading and unloading of luggage to a high shelf in a factory, and maintenance of outer walls and the like have been conventionally performed. Aerial work vehicles are being used. This aerial work vehicle is provided with a deck on a self-propelled vehicle equipped with a crawler type traveling device or a wheel type traveling device via a lifting device so as to be able to move up and down, and operations such as steering and lifting of the traveling device are performed on this deck. An operation box for performing the operation was attached. And I ca n’t get in between the branches,
In some cases, such as when there is a slope or bay window near the wall and the self-propelled trolley cannot be laid sideways on the wall, store the overhanging plate inside the deck and overhang it to the side if necessary, and overhang the overhanging plate 2. Description of the Related Art There is known a configuration in which a work can be performed by riding on a vehicle. For example, this is a technique disclosed in Japanese Patent Application Laid-Open No. 8-337396.

The overhanging plate provided on the deck of the conventional aerial work vehicle has been manually or motor-driven for overhanging and storing operations. In the case of manual operation, the overhanging plate is provided one by one. In the case of motor drive, a roller for driving the overhang plate is rotated via a belt and a pulley, and a friction member such as rubber is attached to the outer peripheral surface of the roller. Thus, the slide was driven by the friction between the bottom surface of the overhang plate and the roller surface.

[0004]

However, in the case of manually performing the operation of extending and storing the overhanging plate, if there are a plurality of overhanging plates, it is necessary to engage / disengage the overhanging plate one by one. Yes, operation is troublesome, and in the case of motor drive, when the aerial work vehicle is turned sharply or when traveling on uneven terrain, the position of the bottom surface of the overhang plate and the roller surface Because the relationship was only maintained by friction, the overhang could protrude.

[0005]

The present invention has the following construction to solve the above-mentioned problems. That is, in a working vehicle having a deck provided on a self-propelled carriage and having an overhanging plate capable of projecting horizontally from the deck to the left and right sides, the pawls project from the left or right sides or the lower surface of the overhanging plate. An engagement arm movable to an engagement position and a release position with respect to the claw body, and the engagement arm is operatively connected to a lock lever provided on a deck, and is engaged by rotation of the lock lever. The engaging arm and the claw body are configured to be disengageable. Further, a plurality of the overhanging plates are arranged in parallel, a claw body is provided on each overhanging plate, and each overhanging plate can be simultaneously disengaged by rotating a lock lever.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an aerial work vehicle equipped with an overhang plate locking mechanism according to the present invention will be described below with reference to the drawings. 1 is a side view of an aerial work vehicle with the deck raised, FIG. 2 is a side view of the aerial work vehicle with the deck lowered, and FIG. 3 is an overhanging device for an overhang plate provided on the deck. FIG. 4 is an enlarged rear view of a state where the overhanging plate is protruded, FIG. 5 is an enlarged side view of the state where the overhanging device is unlocked, and FIG. 6 is a state where the overhanging device is locked (engaged). It is an enlarged side view.

[0007] The overall construction of the aerial work vehicle will be described. FIG.
In FIG. 1, an airframe 3 is provided on a traveling device 2 which travels by two right and left crawlers 1, and an engine compartment 4 is provided on a rear portion of the airframe 3 (the left side in FIG. 1 is the front). The traveling carriage 5 is configured. A deck 7 is provided at the upper end of the self-propelled carriage 5 via a lifting device 6 so as to be movable up and down. The overhang plate lock mechanism of the present invention is disposed on the deck 7.

The traveling device 2 changes the power of the engine in the engine room 4 by a transmission and transmits it to a drive sprocket, or drives a hydraulic pump with the power of the engine to drive the hydraulic oil from the hydraulic pump. The structure is such that the drive sprocket is rotated by transmitting the signal to a hydraulic motor provided on a shaft, and the crawlers 1 and 1 are rotationally driven. However, the traveling device 2 is not limited to a crawler traveling device, and may be a wheel traveling device. Further, the drive source may be an electric motor as well as the engine.

The elevating device 6 is provided with two lower rails on both sides of the body frame 3 so as to extend in the front-rear direction parallel to each other. Two upper rails are fixed in the front-rear direction, and a pair of left and right X-shaped links are arranged between the upper rail and the lower rail. The X-link on one side will be described. The X-shaped links are vertically connected to each other so as to be lifted up to a high position. The lower links 13 and 14 constituting the X-shaped link are respectively pivotally connected at the center by a pivot 15. Airframe 3
The lower link 14 is provided with a pivot 19 at the lower end thereof, and rollers are provided at both ends thereof. The rollers are slidably fitted to the lower rail in the front-rear direction. ing.

The upper link 1 is provided at the upper end of the lower link 13.
6 is pivotally supported by a pivot 21, the lower end of the lower link 14 is pivotally supported by the lower part of an upper link 17 by a pivot 22, and a middle portion of the upper links 16 and 17 is pivotally supported by a pivot 23. The upper end of the upper link 16 is pivotally supported by the pivot 24 at the rear lower part of the deck 7.
A pivot 25 is provided at the upper end of the shaft 25, and rollers are rotatably supported at both ends of the pivot 25, and the rollers are fitted to the upper rail slidably in the front-rear direction.

An arm 26 is pivotally supported at the left and right central portions of the pivot 15, while a base of a lifting cylinder 27 is pivotally supported by the pivot 19, and the tip of a piston rod 27 a of the lifting cylinder 27 is connected to the arm 26. It is pivoted at the tip. Therefore, when the elevating cylinder 27 is extended, the pivot 19 slides rearward while the pivot 15 is raised, and the intervals between the pivot 19 and the pivot 20, the pivot 21 and the pivot 22, and the pivot 24 and the pivot 25 are respectively increased. When narrowed, the roller on the pivot 19 slides on the lower rail, the roller on the pivot 25 slides on the upper rail, the X-link is closed in the front-rear direction, and the deck 7 is raised. Conversely, when the elevating cylinder 27 is reduced, the X-shaped link is expanded in the front-rear direction, and the deck 7 is lowered.

The deck 7 serves as a work table,
A handrail 35 is provided upward from the periphery of the deck cover 50, and a part of the handrail 35 is detachable or rotatable as a door so that the handrail 35 can get out of the deck 7 or get on and off the part. ing. An operation box 36 is fixed inside the rear side of the handrail 35 so that operations such as traveling and steering of the traveling device 2 and lifting and lowering of the deck 7 can be performed.

The deck cover 50 is open on both sides, and overhanging plates 51 are housed in the deck cover 50 in parallel with the horizontal direction. 3, the overhanging plates 51, 51,... Are mounted on rollers 52, 52, 52 disposed on the left and right sides and at the center, respectively, and one end of a drive shaft of the rollers 52, 52, 52 is provided. Are provided with pulleys 53, 53, 53, respectively. On the other hand, a motor 54 is fixed in the deck cover 50, a pulley 55 is fixed on a drive shaft of the motor 54, and a belt 56 is wound around the pulley 55 and the pulleys 53. 57 is a tension pulley.

Claw members 59L and 59R project from the left and right sides of each overhanging plate 51, and overhanging plate stoppers 60 extend vertically from the left and right central back surfaces of the upper plate 50a of the deck cover 50. ing. However, the claw body 59 is provided on each overhanging plate 51.
Can also be arranged on the lower surface of.

When the motor 54 is rotated counterclockwise in this manner,
As shown in FIG. 4, rollers 52
The roller 52 is rotated counterclockwise through a pulley 53.
The overhang plate 51 placed on the 52 is moved leftward.
When the right claw body 59R comes into contact with the overhang plate stopper 60, the movement of the overhang plate 51 is stopped, and the motor 5
As the roller 4 continues to be driven, the rollers 52 rotate while sliding. Conversely, when the motor 54 is rotated right, the overhang plate 51 can be moved rightward. If a limit switch is provided at a position where the pawl bodies 59L and 59R abut the overhanging plate stopper 60 and connected to the motor 54, the motor 54 can be automatically stopped at the extended position.

As shown in FIGS. 2, 3 and 5, support plates 61 are vertically provided in front and rear of the deck cover 50, and stopper shafts 62L are provided on both sides of the support plates 61. 62R is slidably mounted in the front and rear direction. .. Are provided on stopper shafts 62L, 62R between the support plates 61, 61.
.. Are disposed so as to be located on the outer side in the left-right direction in accordance with the positions of the claw bodies 59 provided on the left and right sides of the claw bodies 59, 59. 6
.. Can be engaged. Shaft stoppers 64 are fixed to both sides of the support plate 61 on one side of the stopper shafts 62L and 62R, and regulate the sliding range of the stopper shaft 62.

The stopper shafts 62L and 62R
The lower end of the lock lever 65L / 65R has a pin 6 at one end.
The lock levers 65L and 65R are pivotally supported on the deck cover 50 by pivot shafts 67 and 67 at their upper positions. An upper portion of the lock lever 65 extends upward through the upper plate 50a, and a lock lever 65 is disposed near the operation unit, in this embodiment, near the operation box 36. A pin 68 protrudes in the middle of the lock lever 65, and a pin 69 is disposed on the deck cover 50 below the pivot 67.
A spring 70 is locked between 69, and the spring 70 causes the lock lever 65 to move beyond the dead center and maintain a position rotated forward (release position) or rearward (engagement position). .

In the above configuration, for example, when performing a fruit harvesting operation in an orchard, the deck 7 is raised and lowered to a desired height, and if the fruits cannot be reached from above the deck 7, the side ( For example, the lock lever 65L (for example, the left side) is rotated forward, and the stopper shaft 62 is slid backward as shown in FIG. 5 to release the engagement between each claw body 59L and the engagement arm 63 (claw). Disengagement position between the body 59L and the engagement arm 63). As shown in FIG. 4, when the motor 54 is rotated counterclockwise, the overhanging plates 51 are moved leftward, and the overhanging plates 51 are projected leftward. it can. At this time, since the lock lever 65R remains in the locked state rotated backward, even if the motor 54 is rotated clockwise, the claw body 59R and the engagement arm 63 abut, and it is not possible to move rightward. No, lock lever 65
When R is released, it can protrude rightward as described above.

When the overhanging plate 51 is not used, when not working, traveling, or stowed, the overhanging plate 51 is stored in the deck cover 50 and is positioned at the center, and the lock lever 65 is not used.
When the L.65R is rotated rearward as shown in FIG. 6, the stopper shaft 62 slides forward, and each claw body 59L, 59R
, And the engaging arms 63, 63,.
No one is moved. .. Can be locked to the left and right by one lever, and one lock lever is provided on each of the left and right sides of each of the overhang plates 51, 51. No need.

As shown in FIGS. 7, 8, and 9, one lock lever 65 'may be disposed on one side instead of the lock levers 65L and 65R. In other words, the case where it is provided on the left side will be described. The stopper shaft 62L
· Arrange 62R parallel to the left side,
Are respectively protruded from L.62R, and the engaging arms 63, 63...
It is arranged so as to be located on both sides of 9L. The protrusions 71L are opposed to one ends of the stopper shafts 62L and 62R.
71R, and a lever guide 72 is disposed at a disengagement position above the projection 71R.
Position where only the projection 71R is brought into contact with only the projection 71R, and where only the projection 71R is brought into tension and locked.
A position is provided to pull and lock both of the 1Rs.
Then, the lock lever 65 'is connected to the spring 7 in the same manner as described above.
0 so that the engagement position and the release position can be maintained,
The stopper shafts 62L and 62R are urged to the engagement positions by springs 74 and 74. An elastic body 73 is provided at the base of the lock lever 65 'so as to be rotatable in the left-right direction. The right claw body 59R is provided when the overhanging plate 51 extends to the left as described above. Stopper 60
Abut.

In this manner, when the lock lever 65 'is turned straight back, it comes into contact with both the projections 71L and 71R, and the extension lock in the left-right direction can be released. When the lock lever 65 'is turned to the rear while turning to the left, it can abut on only the projection 71L to release the left-side extension lock. Similarly, the lock lever 65' turns to the rear while turning to the right. When it is moved, the overhang lock can be released by abutting only on the right protrusion 71R. .. Can be locked and unlocked, and the left and right sides can be locked and unlocked with one lever, and the lock lever 65 'can be rotated forward. Then, the stopper shafts 62L and 62R are actuated by the urging force of the spring 74.
Slides forward, and the pawl body 59L is brought into engagement with the engagement arms 63, 63.
And locked. Therefore, the configuration is simple and centralized on one side, and the operation can be easily performed.

[0022]

According to the present invention, the following effects can be obtained. That is, in a working vehicle having a deck provided on a self-propelled carriage and an overhang plate provided so as to be able to overhang the deck in the horizontal direction, claws are protruded from the left and right sides or the lower surface of the overhang plate. An engaging arm movable to an engaging position and a releasing position with respect to the claw body is provided, and the engaging arm is operatively connected to a lock lever provided on a deck, and is engaged by rotation of the lock lever. Since the arm and the claw body are configured to be disengageable, the claw body and the engagement arm can be locked simply by rotating the lock lever to the engagement position, and the operation can be easily performed. It is simple and easy to configure, and it is possible to prevent the overhang plate from unexpectedly protruding due to sudden turning or vibration during uneven running, etc. The overhang plate can be overhanged.

Also, since a plurality of overhanging plates are arranged in parallel, a pawl body is provided on each overhanging plate, and each overhanging plate can be simultaneously disengaged by rotating the lock lever. With the same configuration, a plurality of overhanging plates can be locked simultaneously by one lever, and there is no need to lock and release one by one.

[Brief description of the drawings]

FIG. 1 is a side view of an aerial work vehicle with a deck raised.

FIG. 2 is a side view of the aerial work vehicle with the deck lowered.

FIG. 3 is a rear view showing an overhanging device of an overhanging plate provided on a deck.

FIG. 4 is an enlarged rear view of a state in which the overhang plate is projected.

FIG. 5 is an enlarged side view of the overhanging device in an unlocked state.

FIG. 6 is an enlarged side view of the overhanging device in a locked state.

FIG. 7 is a plan view showing another embodiment of the overhang lock device.

FIG. 8 is a side view of the same.

FIG. 9 is a rear view of the same.

[Explanation of symbols]

 5 Self-propelled carriage 7 Deck 51 Overhang plate 59 Claw body 63 Engagement arm 65 Lock lever

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hideki Miyamoto 1-1-1, Ishiba, Matsumoto-shi, Nagano Prefecture Inside the Matsumoto Plant of Shibaura Machinery Co., Ltd. (72) Inventor, Masahiko Ando 1-1-1, Ishiba, Matsumoto-shi, Nagano Prefecture No. 1 Ishikawajima Shibaura Machinery Co., Ltd. Matsumoto Plant (72) Inventor Takashi Kaneko 1-1-1, Ishiba, Matsumoto City, Nagano Prefecture Ishikawajima Shibaura Machinery Co., Ltd. Matsumoto Plant (72) Inventor Masao Nozawa 224 Naganumacho, Isesaki City, Gunma Prefecture No. 1 within Nozawa Corporation (72) Inventor Junichi Nozawa One at 224 Naganuma-cho, Isesaki City, Gunma Prefecture Inside of Nozawa Factory (72) Inventor Katsuhiro Watanabe 224, Naganuma-cho, Isesaki City, Gunma Prefecture Nozawa Corporation Inside the factory (72) Inventor Takanori Kawashima 2-64 Doshocho, Yonago, Tottori Prefecture (72) Inventor Tsukasa Nagaki Omiya City, Saitama Prefecture 1-40, Susumu 2 Biological Technology Research Institute (72) Inventor Mikio Ogawa 1-440 Nisshincho, Omiya City, Saitama Prefecture Biological Specified Industrial Technology Research Organization (72) Inventor Yukito Fujii 1-40-2 Nisshin-cho, Omiya-shi, Saitama Pref.

Claims (2)

[Claims] 1. A work vehicle in which a deck is provided on a self-propelled vehicle, and an overhang plate is provided so as to be able to overhang the deck horizontally and to the left and right sides. An engagement arm movable to an engagement position and a release position with respect to the claw body, and the engagement arm is operatively connected to a lock lever provided on the deck to rotate the lock lever. An overhang plate locking mechanism for a working vehicle, wherein the engagement arm and the claw body are configured to be disengageable by movement. 2. The overhanging plate is arranged in parallel, a plurality of pawls are provided on each overhanging plate, and each overhanging plate can be simultaneously disengaged by rotation of a lock lever. Item 2. An overhang plate locking mechanism for a working vehicle according to Item 1.