JPS6042144Y2 - Tool support bracket delivery device on telescopic boom - Google Patents

Description

[Detailed description of the invention] This invention supports a tool support bracket that supports tools such as an auger on the tip of the inner boom during work.
The present invention relates to a tool support bracket delivery device for a telescopic boom that is supported on the tip of an outer boom when storing tools.

As a conventional tool support bracket delivery device for a telescopic boom, the one described in, for example, Japanese Utility Model Publication No. 48-2496 is known.

However, with this one, the tool support bracket can only be passed from the first stage boom (outer boom) to the second stage boom, and the tool support bracket cannot be passed to the third stage boom or higher. There was a problem.

This idea was devised by focusing on these conventional problems, and involved attaching a first bracket to the outer boom and a second bracket to the inner boom, with holes in the first bracket and through holes and holes in the second bracket. 1st. Second
A slit is formed in each of the first and second mounting shafts. Second
It is an object of the present invention to solve the above-mentioned problems by inserting and supporting the bracket into holes and through-holes.

This invention will be explained below based on the drawings.

1 to 12, reference numeral 1 denotes an outer boom that is supported on a moving vehicle body (not shown) so that it can be lifted up and down, and a first stage inner boom 2 that can be freely projected is fitted into the outer boom 1. , a second-stage inner boom 3 that can freely protrude is fitted into the first-stage inner boom 2.

The second stage inner boom 3, that is, the top stage inner boom has a head part 4 at its tip, and this head part 4
A hanging hook (not shown) is suspended from the.

5 is a first bracket attached to the tip of the outer boom 1, and this first bracket 5 includes a 11.1.
As shown in detail in FIG. 2, a hole 6 extending parallel to the outer boom 1 is formed.

7 is a second bracket attached to the tip of the second stage inner boom 3, and this second bracket 7 includes:
As shown in detail in Figures 4-10, the holes 6 in the first bracket 5
A through hole 8 coaxial with the is formed.

The second bracket 7 also has a first slit 9 parallel to and communicating with the through hole 8 on the side adjacent to the first bracket 5.
and a second slit 10 communicating with the through hole 8 and extending perpendicularly to the first slit 9 are formed.

11 is a cylindrical mounting shaft parallel to the outer boom 1, and as shown in FIGS. It is inserted into the hole 6 or through hole 8 of the second brackets 5, 7 and is rotatably supported.

Reference numeral 12 denotes a pair of stoppers attached to the mounting shaft 11. These stoppers 12 are made of plate springs or the like, and the mounting shaft 11 is hooked to the first bracket 5 so that the mounting shaft 11 is received by the second bracket 7. is retracted during handing over to release the attachment of the mounting shaft 11 to the first bracket 5.

The base end of an arm 13 is fixed to the center of the mounting shaft 11, and a tool such as an auger (not shown) is attached to the tip of the arm 13. Working position A and storage position B (
(see Figures 2 and 4).

Next, the effect will be explained.

Now, as shown in FIGS. 1 and 2, the mounting shaft 11 is inserted and supported in the hole 6 of the first bracket 5.

At this time, the arm 13 is swung to the storage position B, and tools such as an auger (not shown) are locked and stored in parallel to the outer boom 1.

In this state, first, the inner booms 2.3 of the first and second stages are retracted.

As a result, the second bracket 7 approaches the mounting shaft 11, and the tip of the mounting shaft 11 is inserted into the through hole 8.

At this time, the arm 13 is inserted into the first slit 9.

Next, a tool such as an auger is released from the outer boom 1.

As a result, the arm 13 is guided by the second slit 10 of the second bracket 7 and swings about the mounting shaft 11 to take the working position A.

The inner booms 2.3 of the first and second stages are then extended.

As a result, the arm 13 of the mounting shaft 11 is aligned with the second slit 10.
Since the bracket is hooked to the bracket, the receiver is passed from the first bracket 5 to the second bracket 7.

The state at this time is shown in FIG.

Further, at this time, tools such as an auger are located below the arm 13 of the mounting shaft 11.

Next, the first and second stage inner booms 2.3 are protruded and a tool such as an auger is moved to a predetermined position to perform work such as excavation.

On the other hand, when the mounting shaft 11 and arm 13 are transferred from the second bracket 7 to the first bracket 5, the opposite effect to that described above is performed.

In the above-mentioned embodiment, the case where the mounting shaft 11 and the arm 13 are transferred to the second-stage inner boom 3 was explained, but according to this invention, the uppermost stage of a telescopic boom having multiple stages of inner booms is Alternatively, the tool support bracket can be placed on any inner boom.

As explained above, according to this invention, a first bracket having a hole is attached to the outer boom at the lowest stage, a second bracket having a through hole and an abbreviated slit is attached to the inner boom, and the first bracket is attached to the inner boom. By retracting the inner boom so that the mounting shaft inserted and supported in the hole is inserted and supported in the through hole and slit of the second bracket, the tool can be supported on the top boom of a multi-stage telescopic boom of three or more stages. The bracket can be easily and reliably passed.

[Brief explanation of drawings]

Fig. 1 shows an embodiment of the tool bracket delivery device for a telescopic boom according to this invention, and shows a state in which the mounting shaft and arm are supported by the first bracket, and Fig. 2 is the same as Fig. 1. Fig. 3 is a view showing the installation shaft and arm supported by the second bracket, Fig. 4 is a view taken from the IV-rV arrow in Fig. 3, and Fig.
0 shows an embodiment of the second bracket, FIG. 5 is a perspective view thereof, FIG. 6 is a front view, and FIG. 7 is a plan view.
Fig. 8 is a back view, Fig. 9 is a right side view, Fig. 10 is a left side view, Figs. 11 and 12 show an embodiment of the first bracket, and Fig. 11 is a front view thereof. FIG. 12 is a right side view thereof. 3... Inner boom, 1... Outer boom, 5... First bracket, 6...
... Hole, 7... Second bracket, 11...
...Mounting shaft, 13... Arm, butt... Through hole, 9... First slit, 10...
2nd slit, A... Working position, B... Storing position.

Claims (1)

[Scope of utility model registration request] An outer boom into which at least one inner boom is fitted so as to be freely protrusive; a first bracket attached to the tip of the outer boom and having a hole extending parallel to the outer boom; and a first bracket attached to the tip of the inner boom. 2 brackets, a mounting shaft extending parallel to the boom, the base end is fixed to the mounting shaft, and can take a storage position and a working position separated by approximately 90 degrees from each other, and a tool such as an auger is attached to the tip. a through hole coaxial with the hole in the first bracket in the second bracket, a first slit parallel to and communicating with the through hole on the side adjacent to the first bracket, and a first slit perpendicular to the first slit. When forming a second slit extending in the first bracket and passing the mounting shaft inserted and supported in the hole of the first bracket to the second bracket,
By retracting the inner boom, the mounting shaft is inserted into the through hole of the second bracket, and the arm at the storage position is inserted into the first slit, and then the arm is swung and inserted into the second slit, so that the arm reaches the working position. A tool support bracket delivery device for a telescopic boom, characterized in that the mounting shaft is transferred to the second bracket in such a manner that the tool support bracket is transferred to the second bracket.