JP2557942Y2 - Work implement loading device for work vehicles - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work implement loading device for a work vehicle used when loading and unloading work implements from the side of a carrier to the upper part of the carrier.

[0002]

2. Description of the Related Art For example, a boom which can be raised and lowered, stretched, etc. is attached to the center of the platform of an aerial work platform in the width direction with a work platform provided at a tip end thereof. A tool box for accommodating working tools and the like necessary for power distribution work and construction work at high places is provided below the load carrier, which is often stored substantially parallel to the load platform. However, large work tools (for example, ladders) that cannot be stored in the tool box are often loaded on the roof (upper part of the carrier) of the tool box.

In order to facilitate the loading and unloading of such a large work implement on the roof, conventionally, for example, a work implement loading device as proposed in Japanese Utility Model Laid-Open No. 1-90634 is used. Was sometimes done. This extends toward the side edge of the roof (the side edge of the cargo bed) on the roof of the tool box, and has a base end (the roof) near the side edge of the roof. Of the roof, and a gantry capable of fixing and holding the large working tool is slidably movable to the outside of the side edge of the roof with respect to the guide rail. I have. For this reason, for example, first, the gantry located on the base end side of the guide rail is slid to the outside of the side edge of the roof portion and pulled out, and the gantry is raised by raising the guide rail. From the section and be moved to the side of the tool box. This makes it possible to easily load and unload the large work implement on and off the roof as compared with a case where the large work implement is directly lifted.

[0004]

However, in the work implement loading device having such a structure, the gantry is lowered by erecting the guide rails. If the length of the guide rail is increased so that it can be used for loading a large work tool having the above, when the guide rail is raised, the guide rail interferes with the boom in the stowed state and the gantry cannot be lowered. Thus, inconvenience may occur.

[0005] The present invention has been made in view of such circumstances, and without erecting the guide rail,
It is another object of the present invention to provide a work implement loading apparatus that can easily load and unload work implements to and from the upper part of a vehicle body with a configuration that is equal to or simpler than a conventional work implement loading apparatus.

[0006]

In order to achieve the above object, the work implement loading device according to the present invention has a guide rail extending from the loading position of the work implement at the upper part of the platform toward the side edge of the upper part of the platform. A guide that is guided by this guide rail and that can slide and move in parallel is provided, and the work tool can be fixedly held on the mount.The mount is located along the guide rail between the loading position and the side edge outer position. The slide parallel movement is configured. Then, when the gantry slides and slides to a position outside the side edge of the loading platform, the front end side of the gantry moves downward with respect to the guide rail,
The gantry is rotatable with respect to the loading platform, and when the gantry slides and moves to the side edge outside position in this manner, the gantry is biased to hold the gantry parallel to the guide rails And a movable holding means for causing the rotation of the gantry at a low speed. A pair of rollers for sliding parallel movement along the guide rails are provided on the left and right sides on the rear end side of the gantry, separated from each other, and when the gantry is located outside the side edge of the upper part of the gantry. Preferably, the gantry can be rotated so that one roller is disengaged from the guide rail and the front end side of the gantry moves downward with respect to the guide rail with the other roller as a fulcrum.

[0007]

In such a work implement loading apparatus, for example, when a work implement is to be loaded, first, the gantry located at the loading position is slid parallel to the side edge portion outside position along the guide rail. Here, since the movable holding means is provided, the gantry is held in parallel with the guide rail by receiving the urging force of the movable holding means. Next, by rotating the front end side of the gantry located at a position outside the side edge portion downward (at a low speed because movable holding means is provided) with respect to the guide rail, the gantry is moved to the side of the loading platform. The work tool can be easily fixed to the gantry. Then push up the front end of the gantry,
By rotating the gantry and the work tool upward, and sliding and moving the work tool along the guide rail to the loading position, the work tool can be easily placed directly on the upper part of the loading platform.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. First, an aerial work vehicle equipped with the work implement loading device of the present invention will be described with reference to FIG. This aerial work platform 1 is provided with a swivel 3 at the front of the luggage carrier 2 near the center in the vehicle width direction. A boom 5 that is provided and that can be freely extended and retracted is pivotally mounted so as to be able to move up and down (the storage state is shown in the figure). A large tool box 6 having a height from the floor of the loading platform 2 to an intermediate portion of the swiveling platform 3 (below the boom 5) is attached to almost the entire surface of the loading platform 2.
Work equipment necessary for work at height can be stored. On the roof 6 a of the large tool box 6, a large working tool (here, ladder H) that cannot be stored in the large tool box 6 is placed on the roof 6 a from the side of the large tool box 6. The work implement loading device is mounted on the inside of the side edge of 6a (loading position).

(Embodiment 1) Next, the work implement loading apparatus will be described with reference to FIGS. For convenience of explanation, the side edge side of the roof 6a may be referred to as the front, and the inner side of the roof 6a may be referred to as the rear.

The work implement loading apparatus 10 includes a guide rail 11 and a gantry 12.

The guide rail 11 is, as shown in FIG.
The structure is a double rail structure that extends from the loading position on the roof portion 6a toward the side edge portion of the roof portion 6a and extends in two stages up and down, and the front end of the lower rail is It is closed. However, a cutout portion 11a is provided on the upper surface on the front end side of the upper rail, and a pin hole 11h is formed on the upper end on the rear end side of the guide rail 11. Note that such a guide rail 11 is provided on the roof 6a in the front-rear direction of the vehicle body 2.
The books are arranged in pairs at predetermined intervals.

The gantry 12 includes a leg 21 and a frame 22.
And a damper stay (movable holding means) 23.

As shown in FIG. 2, the leg portion 21 has a concave portion 21d at the center upper portion (the bottom portion thereof has the same height as the floor surface of the rail above the guide rail 11). And rotatably attached to the front lower side and the rear upper side of the outer surface of the support plate 21a,
Rollers 21b, 21b that can roll in the lower rail and the upper rail of the guide rail 11, respectively. In addition, a pin hole 21h is formed in the upper front part of the support plate 21a.

As shown in FIG. 3, the frame 22 has two main frame members 22a, 22a arranged in parallel with the pair of guide rails 11, and these main frame members 2a, 22a.
The connecting frame members 22b, 22b for connecting the front end portions and the rear portion of the main frame members 22a, 22a are formed in a rectangular shape. It is freely pivotally attached to the support plate 21a. In addition, sliders 22c and 22c are provided on the outer surface of the rear end of each main frame member 22a.
c is attached. The slider 22c moves up and down through the notch 11a of the guide rail 11 with the rotation of the frame 22, and when the frame 22 is parallel to the guide rail 11, the support plate 2
1a and the bottom of the recess 21d and the guide rail 11
And serves as a stopper for preventing further rotation of the frame 22 rearward when the frame 12 slides along the guide rail 11. It also contacts the lower part of the upper surface of the upper rail to prevent the frame 22 from rotating forward. The ladder H can be detachably fixed and held on such a frame 22 by using a band 25 bridged between the two connection frame members 22b, 22b.
Note that ladder receivers 27 are attached near both ends of each connection frame member 22b to facilitate positioning of the ladder H on the frame 22.

The frame 22 is provided with a lock mechanism 28 for fixing the entire gantry 12 to the guide rail 11 at the loading position. The lock mechanism 28 is connected to the front end side connection frame member 22b.
A handle 28a movable in the front-rear direction, a T-shaped fitting 28b pivotally mounted on the center of the rear connecting frame member 22b in a horizontally rotatable manner, and a main frame member 22a. Pin support hole 22h drilled laterally at rear
The first connecting bar 28 connects between the lock pins 28p, 28p, whose tips are protruding and retractable while being inserted and supported, and one end of the handle 28a and the T-shaped bracket 28b.
c, two second connection bars 2 connecting between the two ends of the T-shaped fitting 28b and the base end of each lock pin 28p.
8d and 28d. This lock mechanism 2
In FIG. 8, when the gantry 12 is located at the loading position, the tip of each lock pin 28p faces the above-described pin holes 21h and 11h, so that when the handle 28a is moved from the front to the rear,
The first connecting bar 28c moves rearward and the T-shaped fitting 28b
And the second connecting bar 28d moves laterally with the rotation to lock each lock pin 28p with each pin hole 21h,
11h, and the gantry 12 is fixed on the loading position. On the other hand, when the handle 28a is moved from the rear to the front in such a fixed state, the lock on the guide rail 11 of the gantry 12 is released by the operation of each member in the reverse direction.

[0016] As shown in FIG.
One end is pivotally attached to a mounting stay 21e provided inside the front portion of the support plate 21a so as to be pivotable up and down, and the other end is pivotally attached to the inside of the main frame member 22a so as to be pivotable up and down. When the gantry 12 is located outside the side edge of the roof 6a (when the slider 22c is located below the notch 11a), the frame 22 (and the ladder H) is moved to the guide rail 11 by the reduced resistance. Hold in parallel. Further, the front end side of the frame 22 is pressed downward, thereby allowing the frame 22 to rotate at a low speed. This prevents the frame 22 from suddenly turning downward.

Second Embodiment Next, another working tool loading device will be described with reference to FIGS. The work tool loading device 100 includes a guide rail 111 and a gantry 112.

The guide rail 111 extends from the loading position of the roof part 6a toward the side edge part 6b of the roof part 6a, and its structure is such that the rail floor surface is inclined downward near the front end, and The lower front end is closed (the upper front surface is open). However, a notch 111a is provided on the upper surface of the front part of the rail. In addition, two such guide rails 111 are arranged in the roof 6a in the front-rear direction of the vehicle body 2 in pairs at predetermined intervals.

The gantry 112 includes a leg 121 and a frame 1.
22.

The leg 121 has a support plate 121a,
Rollers 121b and 121b are rotatably attached to the front lower side and the rear lower side of the outer surface of the support plate 121a, and can roll inside the guide rail 111, respectively.

The frame 122 is formed in a quadrangular shape like the frame 22 in the first embodiment, and is constructed by integrally attaching the leg portions 121 to rear portions of both side ends. When the front roller 121b is located at the front end of the guide rail 111, the frame 122 is rotatable in the front-rear direction with the roller 121b as a fulcrum. When the frame 122 rotates forward from a state parallel to the guide rail 111 or reversely, the rear roller 121b moves up and down through the notch 111a of the guide rail 111. I do. On such a frame 122, the ladder H can be detachably fixed and held by using a band like the frame 22 described above. Note that a handle and ladder receiver 127a is attached to the front end of the frame 122, and a ladder receiver 127b is attached to the rear end of the frame 122.
2 and the positioning of the ladder H on the frame 122 is facilitated. Also, the frame 12
A stopper 125 having a cross section in the shape of a hairpin and opening rearward is attached to the front part of each of the two side ends so as to protrude. When the gantry 112 slides to the rear part of the guide rail 111, the stopper 125 moves through the opening at the upper end of the front end of the guide rail 111 and sandwiches the front part of the upper surface of the guide rail 111 inside the hairpin shape. Then, when the gantry 112 is located on the loading position, the gantry 112 is stopped by the front end of the upper surface of the guide rail 111 abutting on the inside of the hairpin-shaped foremost part. In the state where the gantry 112 is stopped above the loading position, for example, the stopper 1
By inserting a pin below the stopper 125 from above the guide rail 111 through the upper surface of the guide rail 111,
12 can be locked in the loading position.

Incidentally, a movable holding means 150 as shown in FIGS. 6 and 7 is attached to the work implement loading apparatus 100. The movable holding means 150 is wrapped around a support member 151 fixed to the front of the guide rail 111 so as to protrude upward and a columnar member provided to protrude inward at an upper inside of the support member 151. Spring 152 and the support plate 121
and a hook member 153 provided to protrude outward at the center upper portion of FIG. The spring 1
Both ends of 52 are open in the front-rear direction and extend,
The front end 152a is hung at the intersection of the front end of the support member 151 and the upper end of the guide rail 111. On the other hand, the rear end 152b is normally held slightly upward, and the leg 121 is
When the hook member 153 is located at the front end of the rear end 11, the hook member 153 comes into contact with the lower side of the rear end 152b. In such movable holding means 150, the gantry 112
Is located outside the side end of the roof 6a, the gantry 112 (and the ladder H) is held in parallel with the guide rail 111 by the deformation resistance of the spring 152. Further, the front end side of the gantry 112 (frame 122) is pressed downward, thereby allowing the gantry 112 to rotate at a low speed. As a result, a sudden downward rotation of the gantry 112 is prevented.

Further, as the movable holding means other than the movable holding means 150, there may be a case as shown in FIG. However, in this case, the support plate 1
It is necessary to use a support plate 121a 'having a shape in which the front part of 21a is extended upward. This movable holding means 2
A link 50 has one end pivotally attached to the front upper portion of the support plate 121a 'so as to be rotatable in the front-rear direction, and the other end rotatably mounted with an auxiliary roller 251a rotatable in the guide rail 111. 251 and the support plate 121
The axle of the roller 121b on the front side of a 'and the link 251
And a dam stay 253 having both ends pivotally mounted between the axles of the auxiliary roller 251a.

In the movable holding means 250, when the gantry 122 is located outside the side end of the roof 6a, the gantry 122 is held in parallel with the guide rail 111 by the reduced resistance of the dam stay 253. . On the other hand, when the front end side of the gantry 122 is pushed downward, the gantry 122 is rotated at a low speed.

In the work implement loading apparatuses 10 and 100 described in the first and second embodiments, when the ladder H is to be loaded on the roof 6a or when the ladder H is to be lowered from the roof 6a, the gantry 12, 112 to the outside of the side edge of the roof 6a,
By rotating the roller 1b forward with the front upper or front roller 121b of 1a as a fulcrum, the large tool box 6 can be lowered in a state of being hung on the side.
The ladder H can be loaded and unloaded on the roof 6a more easily than when it is loaded and unloaded directly on the roof 6a.

Further, each of the work implement loading devices 10, 10
0, the guide rails 11, 111 are fixed to the roof 6a, and the gantry 12, 112 is fixed to the guide rails 11, 111.
For example, when a tool having a depth greater than that of the ladder H is loaded and unloaded, the tool can be smoothly loaded and unloaded without interfering with the stored boom 5 as in the related art. Can be performed.

[0027]

[Effects of the Invention] As described above, when the work implement loading device of the present invention is used, when the work implement is loaded on the upper portion of the carrier, the work implement is loaded on the platform lowered to the side of the carrier, and then the platform is mounted. When the work implements loaded on the upper part of the platform are lowered, the work implements located on the upper part of the platform are moved along the guide rails to the loading position on the upper part of the platform. Direct loading / unloading of work implements only needs to be done on the gantry in a lower position, such as sliding outward from the edge, then rotating downward and lowering to the side of the carrier and removing it from there Therefore, it is very easy to load and unload the work implements on the upper part of the loading platform.
It is fixed to the upper part of the platform, and the platform only moves in parallel along the guide rails. Therefore, even if there is an obstacle (boom, etc. in an aerial work platform) above the platform, it does not interfere with the obstacle. It is convenient because it can be loaded and unloaded. In addition, since the movable holding means is attached, it is possible to prevent the gantry from suddenly turning downward, and the loading and unloading can be performed safely and easily.

[Brief description of the drawings]

FIG. 1 is a side view of an aerial work vehicle equipped with a work implement loading device according to the present invention.

FIG. 2 is a side view of the work tool loading device.

FIG. 3 is a plan view of a gantry of the work implement loading device.

FIG. 4 is a view (partly sectional view) taken in the direction of arrow IV in FIG. 2;

FIG. 5 is a side view showing a second embodiment of the work implement loading device.

FIG. 6 is a side view of a movable holding unit in the work implement loading device.

7 is a view taken in the direction of the arrow VII in FIG. 6 (partial sectional view).
It is.

FIG. 8 is a side view showing other movable holding means.

[Explanation of symbols]

 6 Large Tool Box 6a Roof 11, 111 Guide Rail 12, 112 Stand 21b, 121b Roller 23 Dam Paste 150, 250 Movable Holding Means

Claims (2)

(57) [Scope of request for utility model registration] 1. A work implement loading device for a work vehicle that enables loading and unloading of work implements to and from an upper portion of the carrier from a side of the carrier in the work vehicle, wherein the work implement loading device includes: A pair of left and right guide rails extending toward an outer side edge portion of the upper portion of the loading platform, and a gantry capable of fixing and holding the working tool, the gantry is provided outside the loading position and the side edge portion. The guide rail is guided by the guide rail between the two positions, and the slide parallel movement is possible, and when the gantry slides to the outside position of the side edge portion, the front end side of the gantry is connected to the guide rail. With respect to the loading platform so as to move downward with respect to the loading platform. When the platform is slid parallel to the side edge portion outside position, the platform is kept parallel to the guide rail. A work implement loading device for a work vehicle, comprising movable holding means for urging the work table to be held and performing the rotation of the gantry at a low speed. 2. The gantry has a pair of rollers located on the left and right sides of a rear end side thereof and separated from each other back and forth. These rollers are guided by the guide rails, and the gantry moves along the guide rails. When the gantry is located at the position outside the side edge portion, one of the pair of rollers is disengaged from the guide rail and the other roller is used as a fulcrum, and the front end of the gantry is guided. The work implement loading device for a work vehicle according to claim 1, wherein the gantry is rotatable so that a side moves downward with respect to the guide rail.