JP2914625B2 - Falling object capture device for aerial 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 fallen object catching device which can be universally retrofitted to buckets of various sizes in an aerial work vehicle.

[0002]

2. Description of the Related Art In aerial work vehicles used for electrical work and communication line work, equipment storage bags such as necessary parts and tools are suspended around the bucket, but these are carelessness of workers. The inventor of the present invention has previously proposed Japanese Patent Application No. 8-151563 as a safety measure against the danger of falling due to the recoil of the boom or the boom, which may lead to personal injury or traffic obstacles.

[0003]

However, as a result of intensive studies for commercialization, it was found that the prior invention had the following problems to be improved.

That is, according to the configuration of the prior application, a hanger hook (40) hung on the reinforcing flange (12) of the bucket (11) and a top cover attached to the upper end of the vertical pipe (23). (29) is independent as a separate part, and the joining piece (41) of the hanger hook (40) is joined to the joining flange (28) of the top cover (29). 4
2) and the nut (43) are fastened and fixed, so that the work of assembling the net support frame (F) and the work of attaching it to the bucket (11) cannot be performed quickly and firmly by a so-called one-touch operation type. However, it is still very troublesome, and the above-mentioned work at a particularly high place involves dangers.

Further, both ends of a horizontal pipe (24) connected and fixed between adjacent vertical pipes (23) are formed as cover forks (31) which open along the longitudinal direction of the horizontal pipe (24). Since the vertical pipes (23) are inserted from both open ends thereof, adjacent vertical pipes (23) suspended and fixed to the bucket (11) first are separated from each other. If they are not forced apart, a horizontal pipe (2
4), the net support frame (F) is difficult to assemble quickly and lightly.

[0006]

SUMMARY OF THE INVENTION The present invention mainly intends to further improve such a problem. For this purpose, a rear surface of a bucket having a substantially square shape when viewed from a plane is provided on a telescopic boom of an aerial work vehicle. And a pair of vertical pipe holders, which correspond to the front and left and right sides of the bucket, are wrapped around the front and left and right sides of the bucket in a surrounding state. By doing so, while fixing each vertical pipe holder to the bucket,

[0007] To a pair of vertical pipes, a horizontal pipe connecting the middle height positions of the two vertical pipes, a pair of inclined pipe holders also held at the lower ends of the two vertical pipes, and a pair of inclined pipe holders A pair of inclined pipes projecting in a rising inclined installation state intersecting with the vertical pipe by being pivotally connected in an up-and-down rotatable manner, and the projecting tips of the two inclined pipes and the vertical pipe or horizontal pipe. Prepare at least two sets of net support frames consisting of a pair of operating ropes connecting the pipes,

The lower ends of the vertical pipes forming the one and the other net support frames are inserted and fixed from above into vertical pipe holders corresponding to the front and left and right side surfaces or one side surface of the bucket.

In addition to the mutual plane space between the vertical pipes forming the individual pieces of the net support frame and the mutual plane space between the inclined pipes, the vertical pipe is provided between the adjacent ones of the net support frame and the other. In the mutual plane space of comrades and the mutual plane space of inclined pipes,
In a fallen object catching device for aerial work vehicles that sticks a continuous fallen object catching net as a whole,

A top cover having a lock pin receiving hole is integrally attached to an upper end portion of each of the vertical pipes forming the one and the other net support frames, and the top cover is also attached to the bucket having the lock pin receiving hole. With the hanging hanger hook, it is possible to slide forward and backward in the direction in which the bucket is slidably held, and to hold the bucket so that it cannot be detached relatively.

After the top cover is once pulled out from the bucket in the retreating direction, the hanger hook is hung on the bucket, and then the top cover is pushed in the opposite direction to operate the top covers in communication with each other. The lock pin receiving hole and the lock pin receiving hole of the hanger hook are inserted into the lock pin receiving hole, and the lock pin is inserted into the lock pin receiving hole to penetrate the lock pin receiving hole.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an aerial work vehicle (V) used for electric work and communication line work, etc. An operator stands in the bucket (B) provided at the tip of the telescopic boom (10) and performs necessary work.

The above-mentioned bucket (B) is a well-known product, and is formed of a fiber-reinforced plastic (FRP) and has a substantially rectangular shape in a plan view. A reinforcing flange (11) is continuously extended and bent at the upper edge of the opening. , Its back (12
In b), it is customary that the telescopic boom (10) is pivotally connected to the distal end of the telescopic boom (10) so as to be freely pivotable.

The fallen object catching device of the present invention can be universally retrofitted to buckets (B) of various sizes.
All of its components are made from electrically insulating materials,
Moreover, when not in use, it can be folded into a small flat shape, its mounting position can be changed, and it can be easily removed from the bucket (B) and stored, while being attached to the bucket (B). It has become.

That is, in FIGS. 2 to 41 showing the attached state of the fallen object catching device according to the present invention and the details of its components, (13) is a front surface (12a) of the bucket (B) and left and right side surfaces (12c). (12d) is an electrically insulating lashing belt (a flat cloth belt with a ratchet mechanism) wound in a horizontal tension state surrounding the (12d). The left and right side surfaces (12c) of the bucket (B) are provided with belt fixing brackets (A) inserted so as to be orthogonal to each other as shown in FIGS.
It is attached and fixed to a lower position close to the rear surface (12b) side in (12d).

As the belt fixing bracket (A), FIG.
5 and 6 show a metal plate (17) in which a pair of upper and lower holes of a bolt receiving circular hole (15) and a vertically adjusting long hole (16) are distributed in an opening, and the metal plate (17) is placed in a bucket (B). A pair of upper and lower existing bolts (18) attached to
And the fastening nut (19) for fixing to the bucket (B).

However, instead of the belt fixing bracket (A) made of the metal plate (17), a pair of upper and lower fixing hooks (20) and elevation adjusting hooks (21) as shown in FIGS. The rod (22) is used, and both hooks (2
0) The screw rod (22) may be attached and fixed to the bucket (B) by locking the pair of upper and lower existing through-holes (23) opening to the bucket (B).
(24) is a double locking nut screwed to the lower end of the screw rod (22).

In short, a belt fixing bracket (A) corresponding to the various buckets (B) of the aerial work vehicle (V) is prepared, and the lashing belt (13) is leveled on the bucket (B). It is wrapped and maintained in an enclosed state.

(25) The front (1) of the bucket (B)
Prior to the fixing of the lashing belt (13), the ABS passed through the belt (13) as a pair of two pieces corresponding to 2a) and the left and right side surfaces (12c) and (12d).
It is a vertical pipe holder made of resin, and the double-sided adhesive tape (26) stuck on the flat back of each
The front (12a) and both left and right sides (12a) of the bucket (B)
c) By temporarily fixing to (12d), the mutual spacing (D1) (D2) of the two pairs is fixed at a constant position, and then the lacing belt (13) is operated by operating a ratchet handle (not shown). , To be wrapped around the bucket (B) and tensioned.

The fallen object catching device of the present invention can be easily attached without performing any special processing such as drilling on the bucket (B). Useful. (27) is an insulating cover made of polypropylene sandwiched between the above-mentioned rushing belts (13). Preferably, each pair of the vertical pipe holders (25) is fixed at a position as close as possible to the corner of the bucket (B).

(28) Each vertical pipe holder (25)
Horizontal belt receiving slits formed through (2)
Reference numeral 9) denotes a square-shaped concave groove which is also formed to open upward, into which a lower end portion of a vertical pipe described later is inserted and fixed non-rotatably from above so as to be freely inserted and removed.
(30) is a small drainage drain opening at the bottom of the groove (29).

(F) is a general term for a net supporting frame which is rich in lightness, strength and electrical insulation.
~ 15, a pair of glass fibers (G
FRP) vertical pipe (31), a glass fiber horizontal pipe (32) connecting the vertical heights of both vertical pipes (31), and a undulating turn to the lower ends of both vertical pipes (31). A pair of glass fiber inclined pipes (3) which are movably pivotally connected and project from the lower end thereof to a rising inclined installation state crossing the vertical pipe (31).
3) and a pair of synthetic-fiber operation ropes (34) made of polyester or the like connecting the protruding ends of the inclined pipes (33) and the horizontal pipe (32) or the vertical pipe (31). There are at least two sets.

At the lower end of each vertical pipe (31), a connection base (35) made of ABS resin which fits into the square groove (29) of the vertical pipe holder (25) is shown in FIGS.
The vertical pipes (31) are also integrally attached with a top cover (36) made of ABS resin while being fixed in the attached state as described above. Also, a stop pipe ring (37) for receiving a horizontal pipe made of ABS resin is fitted and fixed at a mid-height position of each vertical pipe (31).

Each of the top covers (36) is shown in FIG.
24, it is provided with a mounting tube (36a) to be fitted over the vertical pipe (31) and a horizontal slide flange (36b) continuously projecting from the upper end thereof. It is desirable that the mounting cylinder (36a) is formed into a rectangular shape as shown in the figure, and a lock pin receiving notch (38) is provided on a flat outer surface thereof.

On the other hand, the slide flange (36b) of the top cover (36) has a bucket (B) when viewed from a plane.
It is formed into an elongated rectangular or elliptical shape having a fixed length (L1) extending along the direction of advance and retreat, and is formed into an inverted isosceles trapezoidal shape when viewed from the front, and a locking pin receiving hole (39) is formed in one half of the overhang. ) Is opened, and a pair of stopper stoppers (40) (4) are also provided from both ends of the slide flange (36b) on the longitudinal center line.
1) project upward and integrally.

At this time, both stoppers (40)
The upper edge of (41) is a tapered or arcuate guide edge (40a) (41a), and the slide flange (36b) of the top cover (36) is forcibly and artificially forced to a holding flange of a hanger hook described later. In spite of being able to be inserted and fitted, under the assembled state in which the fitting has been performed once, a wedge function that does not accidentally come off is achieved.

Reference numeral (42) denotes a hanger hook for hanging the top cover (36) of each vertical pipe (31) on the reinforcing flange (11) of the bucket (B), which is apparent from FIGS. Thus, it is bent from an ABS resin into a substantially inverted J-shape corresponding to the reinforcing flange (11), and from one end thereof, the top cover (3) is formed.
A horizontal holding flange (42a) capable of holding the slide flange (36b) of 6) continuously extends outside the bucket (B). The overhang length (L2) is about half as large as the fixed length (L1) of the slide flange (36b), and a lock pin receiving hole (43) is formed at the center thereof. Have been.

That is, when viewed from the front, the holding flange (42a) of the hanger hook (42) is a slide flange (36) that forms an inverted leg trapezoid of the top cover (36).
The slide flange (36b) of the top cover (36) received and held in the slide guide groove (44) on the lower surface thereof is formed in the dovetail shape corresponding to the bucket (B). It is designed to be able to slide forward and backward as if pushed inward or pulled out in the opposite direction. However, as described above, the slide flange (36b) and the holding flange (42a) are not relatively separated in the assembled state in which they are fitted.

(45) and (46) correspond to the top cover (3).
6) a pair of stopper notches provided at both ends of the holding flange (42a) on the longitudinal center line corresponding to the stoppers (40) and (41) of the slide flange (36b) in (6); When the slide flange (36b) is pushed in along the slide guide groove (44) of the holding flange (42a), the lock pin receiving holes (39) (43) opened in the flanges (36b) (42a). Comrades are in self-matched communication.

As long as the stoppers (45) and (46) are not provided, the stopper stoppers (40) and (41) projecting upward from the slide flange (36b) of the top cover (36) are omitted. , Holding flange (42a) in hanger hook (42)
It may be determined to lock directly to both ends of the.

In FIGS. 16 to 24, the slide flange (36b) of the top cover (36) is an inverted isosceles trapezoid, and the holding flange (42a) of the hanger hook (42) is a dovetail type. By shaping, the slide flange (36b) is fitted along the slide guide groove (44) of the holding flange (42a) so that the slide flange (36b) can be moved forward and backward.
As is apparent from the other embodiments 5 to 28, the slide flange (36b) of the top cover (36) has a simple rectangular shape as viewed from the front, and the holding flange (42a) on the side of the hanger hook (42) has a clip groove. By molding correspondingly as a mold, the slide flange (3) is formed along the slide guide groove (44) of the holding flange (42a).
6b) may be fitted so that the slide operation can be performed again.

In this case, a pair of elongated stopper stoppers (45) and (46) extending parallel to the slide guide groove (44) are arranged on the upper and lower surfaces of the slide flange (36b) of the top cover (36). And the holding flange (42) on the hanger hook (42) side.
a) Stopper (4) driven downward from (a)
0) is engaged with the stopper stop notch (45) on the upper surface, and another stopper stopper (41) also driven upward from the holding flange (42a) is engaged with the stopper notch (46) on the lower surface. As a result, the slide flange (3) of the top cover (36)
6b) and the holding flange (42) of the hanger hook (42)
a) can also be kept relatively inseparable.

Incidentally, (42b) represents the hanger hook (4)
2) A pair of opposed holding lips which divide the holding flange (42a) into a dovetail groove type or a lip groove type, and (47) follow the contour shape of the hanger hook (42) bent into the J-shape. , A pair of parallel reinforcing ribs projecting upward and integrally.

(P) is a generic name of ABS resin lock pins for connecting and fixing the hanger hook (42) and the top cover (36) of the vertical pipe (31).
A control key (50) pivotally connected to bendable by an operation knob (48) for extracting to a fork 32 and a fulcrum pin (49) made of a horizontal glass fiber traversing the lower end of the forked fork. ), And a slide guide slot (51) for engaging with the fulcrum pin (49) is also opened at the flat base end of the retaining key (50).

For this reason, by extending the operation knob (48) of the locking pin (P) and the retaining key (50) in a straight line as shown in FIGS. 29 to 31, the slide flange (36b) of the top cover (36) is extended. And two locking pin receiving holes (39) (43) in communication with the holding flange (42a) on the side of the hanger hook (42).
The lock pin (P) can be skewered and penetrated as if it were dropped from above.

Further, after the skewers are pierced and penetrated, FIGS.
As shown in FIG. 32 and FIG. 32, the locking key (50) is bent so as to be perpendicular to the operation knob (48), so that the locking pin (P) can be kept in a locked state. The tip of the retaining key (50) in the state is changed in direction by rotating the operation knob (48), and the mounting cylinder (36) of the top cover (36) is changed.
Lock pin receiving notch (38) provided in a)
In addition, it is possible to stably and firmly lock.

However, since the locking pin (P) can be kept in the retaining state by the bending operation of the retaining key (50), the retaining key (50) is turned by turning the operation knob (48). It is not always necessary to change the direction by a dynamic operation. In addition, (52) is a large diameter head of the operation knob (48) and the hanger hook (42).
3 shows an elastic seat inserted between the holding seat and the holding flange (42a).

The horizontal pipe (32) mentioned above has a mutual interval (D1) between the two vertical pipe holders (25) positioned and fixed on the front face (12a) of the bucket (B), and the left and right side faces (12c). ) Two types having lengths (L3) and (L4) different in length and length substantially corresponding to the mutual interval (D2) of the two vertical pipe holders (25) positioned and fixed at (12d) are prepared. . However, when applied to a rectangular bucket (B) in a plan view, it goes without saying that it is sufficient to prepare and prepare the same one length dimension of the horizontal pipe (32).

In any case, a symmetrical pair of ABS resin cover forks (53) is provided at both ends of each horizontal pipe (32), as is clear from FIGS. ) Is integrated in a relational state of opening inward (in the direction in which the bucket (B) exists) perpendicular to the longitudinal direction. This allows the horizontal pipe (31) to hang between the two vertical pipes (31) without manually forcibly expanding the adjacent space between the vertical pipes (31) previously suspended and fixed to the bucket (B). 32) can be correctly connected and operated in a horizontal state where it is inserted and inserted from the outside, which is useful for improving the workability of assembling the net support frame (F).

(54) is a vertical pipe (3) received in the cover fork (53) of each horizontal pipe (32).
An opening / closing bar made of ABS resin that blocks 1) so that it cannot be pulled out. A base end of the opening / closing bar is pivotally connected to a cover fork (53) via a fulcrum pin (55) made of glass fiber. I have. Therefore, the vertical pipe (31) can be quickly moved in and out of the cover fork (53) of each horizontal pipe (32) by rotating this.
Reference numeral (56) denotes a concave groove for receiving the base end and the front end of the opening / closing bar (54), which is cut out in each cover fork (53).

The horizontal pipe (32) connected to each vertical pipe (31) is connected to the vertical pipe (31).
The stopper ring (37) fixed at an intermediate height position allows the stopper to be stably and firmly received from below without any risk of accidental slippage.

The inclined pipe (33) is dimensioned to have substantially the same length as the vertical pipe (31), and a cover base (57) made of ABS resin is integrally attached to each base end thereof. Have been. Reference numeral (58) denotes an inclined pipe holder held and fixed to the lower end of each vertical pipe (31). As is clear from FIGS. 9 to 14, the inclined pipe holder is also formed from ABS resin into a U-shape in plan view. The inclined pipe holder (58) and the cover base (57) are pivotally connected via a fulcrum pin (55) made of glass fiber so that the inclined pipe (33) is undulating and rotatable. It is.

In that case, each inclined pipe holder (58)
13, the flat front (12a) and the left and right side surfaces (12c) (1
It is hugged and fixed to the lower end of each vertical pipe (31) in a directional state crossing a virtual line (Y-Y) orthogonal to 2d) by a certain angle (α) of about 15 degrees. .

Therefore, a total of four inclined pipe holders (58) are arranged as shown in FIGS. 2 and 3 with respect to a substantially rectangular bucket (B) in plan view, and the inclined pipes (33) connected to each of them are arranged. ) Is the front (12a) of the bucket (B)
, And two pairs, each of which protrudes from one side (12c) on one of the left and right sides, can be maintained in a C-shape in a plan view that expands, and the front (12a) in the bucket (B) can be maintained. ) And the fallen object catching area by the net on one side surface (12c) can be set to a large area by the above-mentioned fixed angle (α).

In addition, since the pair of two inclined pipes (33) are maintained in the shape of a letter "C" in plan view, the virtual pipes connecting the tips of the pipes and the corners of the bucket (B) are formed. Becomes longer, and as a result, the fallen object catching range by the net at the corner portion of the bucket (B) can be secured in a large area by itself. However, about 15 degrees as the above-mentioned constant angle (α) is merely a preferable example.

FIGS. 36 and 37 corresponding to FIGS.
As is apparent from another embodiment of the present invention, the inclined pipe holder (58) is connected to the imaginary line (Y-) orthogonal to the front surface (12a) and the left and right side surfaces (12c) and (12d) of the bucket (B).
In a directional state along Y), the inclined pipes (33) connected to the respective inclined pipe holders (58) are hung and fixed to the lower ends of the respective vertical pipes (31).
The two pairs, which protrude from the front (12a) and one side (12c) of the bucket (B), may be kept parallel to each other.

Such another embodiment is also a meaning that can be adopted in the present invention. More specifically, two kinds of the inclined pipe holders (58) are prepared and prepared, and a total of four kinds are used interchangeably. Alternatively, they can be used in combination.

In any case, each inclined pipe (3
A rope guide cap (60) made of ABS resin is press-fitted to the protruding tip of (3), and the tip of each operating rope (34) is introduced in a state where it cannot be removed. Reference numeral (61) denotes a concave circumferential groove cut out on the outer peripheral surface of the rope guide cap (60) exposed from the tip end of each inclined pipe (33). The net is securely tied and fixed to prevent the net from falling along the inclined pipe (33) in the proximal direction even though the net receives the weight of the falling object.

Numeral (62) is a locking hook made of ABS resin attached to and integrated with the base end of each operation rope (34).
This allows the operation rope (34) to be connected to the horizontal pipe (3).
2) Or, after being wrapped around the upper position of the vertical pipe (31), the operation rope (34) so as not to be released.
Will be locked.

9 and 1 through the operation rope (34).
2, horizontal pipe (32) or vertical pipe (3
As a result, the inclined pipe (33) connected to 1) is maintained at a fixed inclination installation angle (β) crossing the vertical pipe (31), and the inclined pipe (33) protrudes from the vertical pipe (31). It is used under

Further, by pulling the operation rope (34) from above the bucket (B), it is possible to fold the inclined pipe (33) to an upright posture approaching the vertical pipe (31). The base end of the operating rope (34) is wrapped around a horizontal pipe (32) or a vertical pipe (31), or is locked inside the bucket (B), and is not released. Is maintained.

The inclined pipe (33) folded in the upright position has substantially the same length as the vertical pipe (31), so that the reinforcing flange (1) of the bucket (B) is provided.
1) It does not protrude upward from the upper side, and as a result, even if it is attached to the bucket (B), there is no possibility that it will hinder the construction of the worker. It goes without saying that the installation angle (β) of the inclined pipe (33) can be appropriately adjusted depending on the tension length of the operation rope (34).

However, when the above-mentioned inclined pipes (33) are fixedly maintained in the folded state of the upright posture, FIGS.
A receiving clip (63) of the inclined pipe (33) as shown in 41 is fitted and fixed to a halfway position below the horizontal pipe stopping ring (37) in each vertical pipe (31). Preferably.

That is, the base ring (6) made of ABS resin
4) is fitted into the vertical pipe (31) to be integrated, and a receiving clip (made of ABS resin) bent into a U-shape in plan view via a polycarbonate resin screw (65) to the base ring (64). 63) is fixed, and the inclined pipe (33) in the folded state is stably and firmly held by the receiving clip (63).

The inclined pipe (33) is pushed down outward as shown in FIGS. 9 and 12 against the resilient holding force of the receiving clip (63), and is expanded from the vertical pipe (31). Needless to say, it can be used as a rising inclined installation state.

Further, (N1) is a vertical plane (vertical plane) between the vertical pipes (31) forming the net supporting frame (F), and a vertical plane (vertical plane) between the same inclined pipes (33). FIG. 42 to FIG.
44 is a square net for catching a falling object made of synthetic fiber such as polyester or nylon, which is stretched in a substantially L-shaped cross section such as 44, and its vertical sides are both vertical pipes (31) and both inclined pipes. To (33), the upper side is similarly fixed and maintained by means such as passing through or tying the horizontal pipe (32).

The upper side of the square net (N1) is further extended downward from the horizontal pipe (32) and fastened to the bucket (B), so that the bucket (B) and the vertical pipe (31) are connected. It is desirable to also shield the gap between them.

In this respect, in the illustrated embodiment, in order to secure a space for lifting and lowering equipment storage bags such as parts and tools necessary for construction, the front face (12a) of the bucket (B) and one of the left and right sides ( 12c) shows the use state of the fallen object catching device attached to a total of two surfaces, and the fallen object catching triangular net (of the same material) is also provided at the corner of the substantially rectangular bucket (B) in plan view. N2) is attached.

That is, the front (12) of the bucket (B)
a) between the net support frame (F) attached to the net support frame (F) attached to one side (12c) adjacent thereto and the vertical pipes (31). Triangular net (N2) in a substantially R-shaped cross-section that continuously shields the space (vertical surface) and the mutually-planar space (inclined surface) between the inclined pipes (33)
Are attached integrally with the square net (N1). (66) is the triangle net (N
A number of hooks linking 2) and the square net (N1) in a partially overlapped state are also made of the above-mentioned synthetic fiber, but a tying string or the like may be used instead.

In addition, the developed state of the square nets (N1) and the triangular nets (N2) is provided with a margin to slightly hang down. Falling objects are prevented from bouncing.

Further, the terminal side (bucket (B)) of the square net (N1) which is not connected to the triangular net (N2).
FIGS. 42 to 44 show one side of the square net (N1) arranged on the front side (12a) of FIG. 42 and the back side of the square net (N1) similarly arranged on one side (12c) of the bucket (B).
As is suggested from the above, it is also shielded by the side net (N3) of the same material integrally connected to the square net (N1).

That is, it has been described above that the square net (N1) is hung on the net support frame (F) in a substantially R-shaped cross-section when it is deployed. ) Is shielded by the side net (N3) so that the fallen object once caught is not accidentally leaked from the side space due to the recoil of the telescopic boom (10) or the like. As shown in FIG. 44, the side net (N3) forms a triangle corresponding to the side space, and the operation rope is formed by a plurality of hooks (67) and binding straps whose upper side is made of synthetic fiber. (3
It is hung to 4).

The net supporting frame (F) of the fallen object catching device attached to one of the left and right side surfaces (12c) of the bucket (B) is adapted to be used in accordance with the condition of the construction site as shown in FIG. As shown by the dashed line, it can be interchangeably relocated to the other side (12d), in which case the same triangular net (N2) or side net (N2) as described above.
3) may be moved to a state of continuous connection with the square net (N1).

In the illustrated embodiment, in order to facilitate the work of attaching to the net support frame (F) and to facilitate the undulating operation, separate square nets (N1) and triangular nets (N2) are used. ) Are connected and integrated by a hook (66), but if they can be folded as shown in FIGS. 45 and 46, a single continuous net including the side net (N3) may be employed as a whole. . A pair of inclined pipes (3) in the net support frame (F)
The overhanging end portions of 3) are connected by a flexible material such as a separate rope, and the net (N) is connected to the flexible material.
1) It is also conceivable to keep the upper horizontal side of (N2) fixed.

The vertical pipe (3) of the net support frame (F) attached to the front (12a) of the bucket (B).
1) and the left and right sides (12c) of the bucket (B).
(12d) or the vertical pipe (31) of the net support frame (F) attached to one side (12c) is connected and integrated by a separate horizontal pipe that bends in accordance with the corner of the bucket (B). I don't mind.

Further, a fallen object catching device can be used in parallel on a total of three surfaces of the front face (12a) of the bucket (B) and the left and right side faces (12c) (12d). Two sets of two net support frames (F) for 12c) are mounted in a bilaterally symmetrical form as shown by a chain line in FIG. 43, and the same triangular nets (N2) and side nets (N3) as described above are also square nets (N). What is necessary is just to add it to the state of linking with N1). Then, the inclined pipe (33) in either one of the pair of two units is connected with each other in FIG.
It is also possible to fold it upright as shown in FIG.

In mounting the fallen object catching device of the present invention configured as described above to the bucket (B) of the aerial work vehicle (V), first, the vertical pipe holder (13) is attached to the lashing belt (13). 25), and the lacing belt (13) is surrounded by the bucket (B), and the front of the bucket (B) (12a) and the left and right side surfaces (12c) (12d). The mutual intervals (D1) and (D2) of two pairs corresponding to each other are determined to be constant.

At this time, the double-sided adhesive tape (26) attached to the vertical pipe holder (25) is attached to the front (12a) of the bucket (B) and the left and right side surfaces (12c) (1).
2d), the vertical pipe holders (25) are temporarily fixed at predetermined positions determined in advance.

Further, the belt fixing brackets (A) are inserted into the bending and locking rings (14) forming both ends of the breaking belt (13) so as to be orthogonal thereto, and the respective belt fixing brackets are inserted. (A) is attached to the back (12c) and (12d) of the bucket (B).
b) Attach and fix in the lower position close to b).

Then, by operating the ratchet handle of the lacing belt (13), the entire belt (13) is tensioned, and the front (12a) and the left and right sides (12c) (12c) ( 12d), and are wound and integrated into a horizontal installation state surrounding a total of three surfaces. Then, the vertical pipe holder (2
5) is also properly fixed and maintained at the predetermined position of the bucket (B).

On the other hand, the slide flange (36b) of the top cover (36) attached to and integrated with the upper end of each vertical pipe (31), and the hanger hook (42) for hanging the bucket (B). The flange (42a) is assembled in a predetermined non-detachable fitting state in which the former is embraced by the latter, and is extended in a straight line into the locking pin receiving holes (39) (43) that are in mate with each other. The rock pin (P) is dropped from above and penetrated.

Therefore, a total of two surfaces, the front surface (12a) of the bucket (B) and one of the left and right side surfaces (12c) as shown in FIGS. If so, the bucket (B) is in the assembled state so as to correspond to two pairs of the vertical pipe holders (25) which are previously positioned and fixed on the two surfaces in total as described above. Hang two pairs of hanger hooks (42).

At this time, the lock pin (P) is
7 and once lifted or pulled out, the slide flange (36b) of the top cover (36) of each vertical pipe (31) is moved along the slide guide groove (44) of the holding flange (42a) into the bucket (B). ), The hanger hook (42) is pulled out of the bucket (B) by the reinforcing flange (1).
1) and then each vertical pipe (3
The lower end of 1) is inserted and fixed from above into each vertical pipe holder (25) as a positional relationship in which the inclined pipe (33) pivotally connected to the lower end faces outward.

Each of the vertical pipe holders (25) fixed to a total of two surfaces of the bucket (B) has a square groove (2).
Since 9) is formed with an opening, each vertical pipe (31)
The connection pipe (3) attached to the lower end of the vertical pipe (3) can be connected and integrated by inserting and fitting the connection base (35) into the concave groove (29).
An inclined pipe (33) is also connected to the lower end of 1) via an inclined pipe holder (58) and a fulcrum pin (55).

After each hanger hook (42) is hung on the reinforcing flange (11) of the bucket (B), the top cover (3) of each vertical pipe (31) is hanged.
The slide flange (36b) of (6) is moved along the slide guide groove (44) of the holding flange (42a) of the hanger hook (42) as shown in FIG. ).

Then, the slide flange (36)
b) and the locking pin receiving holes (39) and (43) opened in the holding flange (42a) of the locking pin (P) which floated up or were removed as shown in FIG. Double locking pin receiving holes (39)
After dropping into (43) and penetrating, the locking key (5) is pressed against the operation knob (48) of the locking pin (P).
0) is bent horizontally to keep the locking pin from coming out of the locking pin receiving holes (39) and (43) as shown in FIG.

Further, as suggested from FIG. 51, the tip of the retaining key (50) is turned by turning the operation knob (48) to change the direction.
It is preferable that the locking pin (P) is locked to the notch (38) provided in the mounting cylinder (36a) of (6) to prevent the locking pin (P) from accidentally rattling.

Such a series of operations is performed by the bucket (B).
The two vertical pipes (31) arranged on the front surface (12a) and one side surface (12c) are sequentially executed, and the two vertical pipes (31) are erected.
Square nets (falling planes) for capturing falling objects are placed in the mutual plane space (vertical plane) where comrades are adjacent to each other, and the inclined pipe (33) that faces outward from each vertical pipe (31). It goes without saying that N1) is attached to each.

Then, the front (12) of the bucket (B)
For a pair of adjacent vertical pipes (31) arranged in a), a corresponding short horizontal pipe (32) of length (L3), and also one side of the bucket (B) For the pair of two adjacent vertical pipes (31) arranged in (12c), the corresponding long length (L4)
The horizontal pipes (32) are inserted through the cover forks (53) at both ends, and are connected and fixed to the horizontal pipes (32) by the attached open / close bars (54). The upper side of the square net (N1) is bound. As described above, the square net (N1) may be inserted through the horizontal pipe (32) in advance, and the fixing means can be freely selected.

In this way, even if the worker's body touches the hanger hook (42), there is no risk that the bucket (B) will be displaced or deformed even if the worker's body touches the hanger hook (42). A stable and secure net support frame (F) results in an assembled frame.

Then, finally, the above-mentioned inclined pipe (33), which faces outward from each vertical pipe (31), is pulled at a constant angle (θ) by pulling the operation rope (34) attached thereto.
42 to 44, the base end of each operation rope (34) is placed at a position above the horizontal pipe (32) or the vertical pipe (31). While being wound around and locked so as not to be released, the triangular net (N) facing the corner between the front surface (12a) and one side surface (12c) in the bucket (B).
2) is connected to and integrated with the square net (N1) adjacent thereto and partially attached to the square net (N1), and is connected to the terminal side where the square net (N1) is not linked to the triangular net (N2). Is the side net (N
The side space is also shielded by attaching 3) to the connection with the square net (N1).

Then, as is clear from the schematic plan view of FIG. 52, each vertical pipe (31) is located at a position corresponding to the front face (12a) and one side face (12c) of the bucket (B).
Each square net (N
A pair of two inclined pipes (33) supporting the two sides facing each other in (1) is formed to have a divergent shape based on the directional state in which the inclined pipe holders (58) laterally oscillate by the above-mentioned fixed angle (α). Since it is kept in the shape of a letter, the fallen object catching range by the square net (N1) on the front surface (12a) and the one side surface (12c) in the bucket (B) can be secured as large as possible.

Further, two pairs of inclined pipes (33) that support two opposite sides of the square net (N1) are provided as follows.
The triangle net (N) corresponding to the corner portion of the bucket (B) is maintained because it is maintained in a C-shape as viewed from the front.
The distance between the hypotenuse of (2) and the corner of the bucket (B) becomes longer, and as a result, the range of catching the fallen object by the triangular net (N2) at the corner is as clear as possible from FIG. It can be secured as a large area.

During the use, the inclined pipe (3)
The inclination installation angle (β) of 3) can be appropriately adjusted depending on the pulling length of the operation rope (34), while the inclination pipe (33) is connected with the inclination pipe (33) when not in use.
It is also possible to fold and flatten a vertical pipe (31) approaching such that the side net (N3) is suspended by an operation rope (34).
Is converged without difficulty with the flattening movement.

In particular, if the receiving clip (63) of the inclined pipe (33) in the folded state is fitted and fixed at a mid-height position of each vertical pipe (31), the operating rope (34) is used. The need for a troublesome operation to lock each one into the horizontal pipe (32), the vertical pipe (31), the inside of the bucket (B), etc. is eliminated, and the boom (10) of the aerial work vehicle (V) moves from the ground to a high place. Even when moving, the inclined pipe (33) does not interfere with other objects.
This is a significant advantage in that it can be kept firmly folded.

[0086] Further, a total of three parts of the bucket (B), the front surface (12a) and the left and right side surfaces (12c) and (12d), are wound by a lacing belt (13) wound in a tension state. Total 6 in advance on 3 sides
Since the vertical pipe holders (25) are fixedly installed, both vertical pipes (31) of the net support frame (F) attached to one of the left and right side surfaces (12c) are separated from the vertical pipe holders (25). Withdrawing each of the holders (25), the locking pin (P) for connecting and fixing the top cover (36) of the two vertical pipes (31) and the hanger hook (42), and removing the net support frame (F) from the bucket ( B) The other side (1)
2d) or a net support frame (F) can be used by attaching to both left and right side surfaces (12c) and (12d) of the bucket (B).

In the latter use condition, only the inclined pipe (33) forming one of the left and right net support frames (F) can be folded in an upright state approaching the vertical pipe (31). The construction can be done without any problems under the condition.

[0088]

As described above, according to the present invention, the rear surface (12b) of the bucket (B), which is substantially square when viewed from above, is mounted on the telescopic boom (10) of the aerial work vehicle (V), and the bucket (B) is provided. B) Front (12a) and left and right sides (12c)
A pair of two vertical pipe holders (25) corresponding to (12d) are passed through the lathing belt (1).
3) is wound around the front surface (12a) and the left and right side surfaces (12c) and (12d) of the bucket (B) in a state of being surrounded, and each vertical pipe holder (25) is fixed to the bucket (B). While integrating

A pair of vertical pipes (31), a horizontal pipe (32) connecting the vertical heights of the two vertical pipes (31), and a pair of vertical pipes (31) held at the lower ends of the vertical pipes (31). And the two inclined pipe holders (58) are pivotally connected to the two inclined pipe holders (58) so as to be rotatable and rotatable. A pair of inclined pipes (33) to be protruded, the protruding ends of the two inclined pipes (33) and the vertical pipe (31) or the horizontal pipe (3).
At least two sets of a net support frame (F) comprising a pair of operation ropes (34) connecting

The lower end of each vertical pipe (31) forming one and the other of the net supporting frames (F) is connected to the front (12a) of the bucket (B) and the left and right side surfaces (12).
c) Inserting and fixing the vertical pipe holder (25) corresponding to (12d) or one side surface (12c) from above,

The vertical pipes (31) forming each of the net support frames (F) and the inclined planes (33) as well as the mutual plane spaces of the same as well as one and the other of the net support frames (F). Even if they are adjacent to each other, the nets (N1) and (N2) for capturing falling objects which are continuous as a whole are put on the mutual plane space of the vertical pipes (31) and the mutual plane space of the inclined pipes (33). In a fallen object capture device for aerial work vehicles to hang,

A top cover (3) having a lock pin receiving hole (39) at the upper end of each vertical pipe (31) forming the one and the other net support frames (F).
6), and the top cover (3)
6) The hanger hook (4) for hanging on the bucket (B) having the lock pin receiving hole (43) also opened.
According to 2), the bucket (B) is slidably moved forward and backward in the direction in which the bucket (B) is present, and the bucket (B) is held so as not to be released.

The top cover (36) is once pulled out from the bucket (B) in the retreating direction, whereby
After the hanger hook (42) is hung on the bucket (B), the top cover (36) is similarly pushed in the opposite direction to operate the lock pin receiving hole (39) of the top cover (36) which is in communication with the top cover (36). Lock pin receiving hole (4) of hanger hook (42)
Since the lock pin (P) which can be bent is dropped into and penetrated into 3), and the lock pin (P) is connected and fixed in a locked state by the bending operation of the lock pin (P), the locking pin (P) is fixed. The problem of No. 151763 can be improved, and the work of assembling the net support frame (F) and the work of attaching it to the bucket (B) can be quickly and firmly performed by a so-called one-touch operation type.

If the configuration according to claim 2 is adopted, a pair of vertical pipes (31) forming the net support frame (F) are hung and fixed to the bucket (B) first, even if both of them are fixed. A horizontal pipe (32) is inserted and inserted from the outside between adjacent vertical pipes (31), and the horizontal pipe (32) and both vertical pipes (31) can be easily and correctly connected and integrated. Yes, both vertical pipes (3
Since it is not necessary to artificially forcibly expand the interval between adjacent items 1), it is also useful for improving workability.

If the structure described in claim 3 is adopted,
Since the inclined pipe (33) of the net support frame (F) is folded in a standing posture approaching the vertical pipe (31) and is stably held by the receiving clip (63), the bucket (B) ) Is moved from the ground to a high place by the boom (10) of the aerial work vehicle (V), the inclined pipe (33) is moved from the fulcrum pin (59) with the inclined pipe holder (58) by its own gravity. By being in a folded and protruding state that protrudes outward, there is an effect that the possibility of interference with other objects can be reliably prevented, and the convenience in handling and use is excellent.

If the structure described in claim 4 is adopted,
Since a pair of inclined pipes (33) forming the net support frame (F) project in a C-shape that expands in plan view, the front surface (12a) and the left and right side surfaces (12c) and (12d) of the bucket (B) are formed. Alternatively, a fallen object catching range by the net (N1) on one side surface (12c) can be secured over a large area by a certain angle (α). A virtual line connecting
Because the distance between the bucket (B) and the corner becomes longer, the bucket (B) has an effect that the fallen object catching area by the net (N2) at the corner can be efficiently secured in a large area by itself. is there.

Further, if the configuration of claim 5 is adopted,
Falling object catching nets (N1) attached to both vertical pipes (31) and both inclined pipes (33) of each net support frame (F) in an approximately R-shaped cross-section when deployed.
The danger that the fallen object once caught by the boom (10) is leaked due to the high-powered turning or recoil of the boom (10) is reduced by the side net (N1) linked to the terminal side of the net (N1).
According to 3), there is an effect that the prevention can be surely performed, and the reliability in capturing fallen objects is enhanced.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a high-altitude working state by using the present invention.

FIG. 2 is a side view showing the net support frame of the present invention mounted on a bucket of an aerial work vehicle.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a plan view corresponding to FIG. 3 and illustrating a folded state of the inclined pipe.

FIG. 5 is an enlarged sectional view taken along line 5-5 in FIG. 2;

FIG. 6 is an enlarged sectional view taken along line 6-6 in FIG. 2;

FIG. 7 is a front view showing another embodiment of the belt fixing bracket.

FIG. 8 is an enlarged sectional view taken along line 8-8 in FIG. 7;

FIG. 9 is an exploded perspective view showing the extracted net support frame.

FIG. 10 is a side view of the net support frame.

FIG. 11 is a front view of FIG. 10;

FIG. 12 is an enlarged sectional view taken along line 12-12 of FIG. 2;

FIG. 13 is an enlarged sectional view taken along line 13-13 of FIG.

FIG. 14 is an enlarged sectional view taken along line 14-14 of FIG. 10;

FIG. 15 is an enlarged sectional view taken along line 15-15 of FIG.

FIG. 16 is an exploded perspective view of a top cover of a vertical pipe and a hanger hook.

FIG. 17 is a front view showing a hanger hook fixed state with respect to a bucket.

FIG. 18 is a sectional view taken along line 18-18 of FIG. 17;

FIG. 19 is a sectional view taken along line 19-19 of FIG. 18;

FIG. 20 is a sectional view taken along line 20-20 of FIG. 18;

21 is a cross-sectional view corresponding to FIG. 18 in a state where the top cover of the vertical pipe is pulled out.

FIG. 22 is a side view showing the extracted top cover of the vertical pipe.

FIG. 23 is a bottom view of FIG. 22.

FIG. 24 is a front view of FIG. 22.

FIG. 25 is a sectional view corresponding to FIG. 19, showing another embodiment of the top cover of the vertical pipe and the hanger hook;

26 is a sectional view taken along line 26-26 of FIG.

FIG. 27 is a sectional view taken along line 27-27 of FIG. 25;

FIG. 28 is a sectional view corresponding to FIG. 27 in a state where the top cover of the vertical pipe is pulled out.

FIG. 29 is an oblique view showing extracted rock pins.

30 is a front view of FIG. 29.

FIG. 31 is a sectional view taken along line 31-31 of FIG. 30;

FIG. 32 is a perspective view corresponding to FIG. 29, illustrating a bent state of the lock pin.

FIG. 33 is an enlarged sectional view taken along line 33-33 of FIG. 2;

FIG. 34 is a sectional view taken along line 34-34 of FIG.

FIG. 35 is a perspective view showing extracted cover forks of a horizontal pipe.

FIG. 36 is a front view corresponding to FIG. 11, showing another embodiment of the net support frame.

FIG. 37 is a sectional view of the net support frame corresponding to FIG. 13;

FIG. 38 is a sectional view corresponding to FIG. 12 and illustrating a folded state of the inclined pipe.

FIG. 39 is an enlarged sectional view taken along line 39-39 of FIG. 38.

FIG. 40 is a plan view showing extracted reception clips.

FIG. 41 is a side view of FIG. 40.

FIG. 42 is a side view corresponding to FIG. 2, showing a use state of the present invention.

FIG. 43 is a plan view of FIG. 42.

FIG. 44 is an enlarged sectional view taken along line 44-44 of FIG. 43.

FIG. 45 is a side view corresponding to FIG. 42 and showing the entire folded state of the fallen object catching net.

FIG. 46 is an enlarged sectional view taken along line 46-46 of FIG.

FIG. 47 is a cross-sectional view showing the process of hanging the hanger hook on the bucket.

FIG. 48 is a cross-sectional view showing a state where the top cover of the vertical pipe has been pushed in following FIG. 47;

FIG. 49 is a cross-sectional view showing a state where the locking pin has been dropped and penetrated following FIG. 48.

FIG. 50 is a cross-sectional view showing a state where the lock pin has been bent following FIG. 49;

FIG. 51 is a cross-sectional view showing a state where the lock pin has been rotated following FIG. 50;

FIG. 52 is a schematic plan view showing an enlarged portion of the fallen object capturing range by oblique lines.

[Explanation of symbols]

 (10)-Telescopic boom (12a)-Front (12b)-Back (12c)-Left side (12d)-Right side (13)-Lathing belt (25)-Vertical pipe holder (31)-Vertical pipe (32) )-Horizontal pipe (33)-Inclined pipe (34)-Operation rope (36)-Top cover (36b)-Slide flange (39)-Lock pin receiving hole (40)-Retaining stopper (41)-Retaining stopper (42) ) · Hanger hook (42a) · Holding flange (43) · Lock pin receiving hole (44) · Slide guide groove (49) · Support pin (50) · Retaining key (53) · Cover fork (58) · Inclined pipe Holder (59), fulcrum pin (63), catch clip (A), belt fixing bracket (B), bucket (F), net Frame (P), rock pin (V), aerial work platform (N1), square net (N2), triangle net (N3), side net (Y-Y), virtual line (α), constant angle (β ) ・ Slope setting

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Akihiko Sada 43-11 Saigo Ura, Takamatsu, Hagiwara-cho, Ichinomiya-city, Aichi Prefecture Inside Yamawaki Industry Co., Ltd. (72) Inventor Mitsuru Okada 1002-1, Matsuocho, Toba-shi, Mie Hamaguchi (56) References JP-A-8-93236 (JP, A) JP-A-7-6398 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E04G 21/32

Claims (5)

(57) [Claims] 1. A bucket (B) which is substantially square when viewed from a plane.
Of the telescopic boom (1) of the aerial work vehicle (V)
0), the front (12a) of the bucket (B)
And a pair of vertical pipe holders (25) respectively corresponding to the left and right side surfaces (12c) and (12d). Each of the vertical pipe holders (25) is fixedly integrated with the bucket (B) by being wound around and fixed to both side surfaces (12c) and (12d), while a pair of vertical pipes (31) and both Vertical pipe (3
1) a horizontal pipe (32) connecting the mid-height positions;
The pair of inclined pipe holders (58) also held at the lower ends of the two vertical pipes (31), and the two inclined pipe holders (58) are pivotally connected to the two inclined pipe holders (58) so as to be undulating and rotatable. A pair of inclined pipes (3) projecting into a rising inclined installation state intersecting with the vertical pipe (31)
3) and at least a net support frame (F) comprising a pair of operation ropes (34) connecting the projecting end portions of the two inclined pipes (33) and the vertical pipe (31) or the horizontal pipe (32). Two sets are prepared, and the lower end of each vertical pipe (31) forming one and the other of the net support frames (F) is attached to the front face (12a) and the left and right side faces (12c) (12d) of the bucket (B). ) Or a vertical pipe holder (25) corresponding to one side surface (12c), which is inserted and fixed from above to the vertical pipe holder (25). Pipe (3
3) Not only in the mutual plane space of each other, but also in the space between the adjacent ones of the net support frame (F) and the other,
A falling object for an aerial work vehicle that continuously attaches falling object catching nets (N1) and (N2) to the vertical plane (31) and the inclined plane (33). In the capturing device, a top cover (36) having a lock pin receiving hole (39) is attached to and integrated with the upper end of each vertical pipe (31) forming the one and the other net support frames (F). The top cover (36) is also hung by the hanger hook (42) for hanging on the bucket (B) having the lock pin receiving hole (43) opened.
By holding the bucket (B) in the direction in which the bucket (B) is slidably and relatively irreversibly, and once pulling out the top cover (36) in the backward direction from the bucket (B), the bucket is moved. After hanging the hanger hook (42) on (B),
Similarly, by pushing the top cover (36) in the opposite direction, the lock pin that can be bent is inserted into the lock pin receiving hole (39) of the top cover (36) and the lock pin receiving hole (43) of the hanger hook (42). A fallen object catching device for an aerial work vehicle, wherein the fallen object (P) is dropped and penetrated, and the locking pin (P) is bent so as to be connected and fixed in a locked state. 2. The two vertical pipes (31) forming each of the net support frames (F) are connected at their intermediate height positions by horizontal pipes (32), and are symmetrical at both ends of the horizontal pipes (32). The cover fork (53) is attached and integrated in a relational state in which both open in the direction of the bucket (B).
The horizontal pipe (32) is inserted between adjacent vertical pipes (31) previously suspended and fixed to the bucket (B), and then inserted from the outside. 2. The fallen object capturing device for an aerial work vehicle according to 1. 3. A receiving clip (63) of an inclined pipe (33) is fitted and integrated at a mid-height position of both vertical pipes (31) forming each of the net support frames (F). The aerial work vehicle according to claim 1, characterized in that the inclined pipe (33) folded to a standing posture approaching the (31) is resiliently held by the receiving clip (63). Falling object capture device. 4. The two inclined pipes (33) forming each of the net support frames (F) are formed in a bucket (B) when viewed from a plane.
Flat front (12a) and left and right sides (12c)
The two inclined pipes (33) are arranged in a mutually expanding space by protruding and extending in the shape of a divergent C-shape crossing a virtual line (Y-Y) orthogonal to (12d) by a certain angle (α). The area of the falling object catching net (N1) to be stuck on the net and the falling object catching net (N2) stuck to the mutual plane space of one of the inclined pipes (33) adjacent to one and the other in the net support frame (F). 2. The fallen object catching device for an aerial work vehicle according to claim 1, wherein each of the areas is increased. 5. A falling object catching net (N1) attached to both vertical pipes (31) and a pair of inclined pipes (33) forming an individual piece of the net support frame (F). ), A side net (N3) in which one end of the net support frame (F) is not adjacent to the other is integrally connected to the net (N1).
The fallen object catching device for an aerial work vehicle according to claim 1, wherein the fallen object catching device is shielded by a cover.