JP2534920Y2 - Wire terminal processing device for simultaneous telescopic boom - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simultaneous telescopic boom wire terminal processing apparatus.

[0002]

2. Description of the Related Art Conventionally, a boom main body and a plurality of telescopic booms which are telescopically inserted into the boom main body,
Wires are stretched through sheaves in these booms,
A simultaneous telescopic boom is provided in which the telescopic boom is simultaneously extended and contracted by the operation of the wire accompanying the telescopic operation of the telescopic cylinder, and both ends of the wire stretched in the boom are connected via fastening members. Was stopped.

[0003]

However, the above-mentioned conventional fastening member has a complicated structure, requires a large number of parts, and is fixed to a boom or a telescopic cylinder by welding. There was a problem.

Further, when the fastening member is welded to the telescopic cylinder, there is a problem that heat-induced distortion occurs in the telescopic cylinder, which causes a decrease in the accuracy of the telescopic cylinder and also hinders standardization of the telescopic cylinder.

[0005]

According to the present invention, there is provided a wire end processing device for a simultaneous telescopic boom comprising a boom main body and a plurality of telescopic booms which are telescopically inserted into the boom main body. In the simultaneous telescopic boom, a wire is stretched through a sheave and the telescopic boom is simultaneously expanded and contracted by the operation of the wire accompanying the telescopic operation of the telescopic cylinder. A fastening ring for fastening the fastening ring of the wire is provided, and a fastening member provided with a fastening pin for fastening the fastening ring of the wire; and And a fixing plate removably attached to a fixing portion at the base end of the cylinder.

Further, the wire terminal processing device for the simultaneous telescopic boom of the present invention comprises a boom main body and a plurality of telescopic booms which are telescopically inserted into the boom main body. Is stretched via a sheave, and the telescopic boom is configured so that the telescopic boom simultaneously expands and contracts by the operation of the wire accompanying the telescopic operation of the telescopic cylinder, wherein annular fastening rings are provided at both ends of the wire. On the other hand, a fastening member for hooking the fastening ring of the wire is supported via a mounting plate provided with a folding member for folding back a middle portion of the wire, and a stopper for preventing pin removal on the mounting plate. A fixing pin is formed, and both ends of the fixing pin are supported by support holes of a bracket provided on both side surfaces of the boom.

[0007]

The wire is easily mounted by hooking the annular fastening rings provided at both ends of the wire to the fastening pins of the fastening member.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a simultaneous telescopic boom according to the present invention.

In FIG. 1, reference numeral 1 denotes a simultaneous telescopic boom (hereinafter simply referred to as a boom), and the boom 1 is inserted into a base boom 2 and a base boom 2 so as to be extendable and contractible. A first intermediate boom 3, a second intermediate boom 5 telescopically inserted into the first intermediate boom 3, and a tip boom 6 telescopically inserted into the second intermediate boom 5. Have been.

Reference numeral 7 denotes a first telescopic cylinder for extending and retracting the first intermediate boom 3 with respect to the proximal end boom 2. The distal end of the rod 7b of the first telescopic cylinder 7 is connected to the proximal end of the proximal end boom 2. , Cylinder body 7a of first telescopic cylinder 7
Is connected to the base end of the first intermediate boom 3.

Reference numeral 8 denotes a second telescopic cylinder for extending and retracting the second intermediate boom 5 with respect to the first intermediate boom 3. The tip of the rod 8b of the second telescopic cylinder 8 is the tip of the cylinder body 7a of the first telescopic cylinder 7. And the distal end of the cylinder body 8a of the second telescopic cylinder 8 is connected to the proximal end of the second intermediate boom 5.

At the base end of the cylinder body 8a of the second telescopic cylinder 8, a plate-shaped mounting member 10 is fixedly mounted. On both sides of the mounting member 10, extension sheaves 13, 13 are pivoted by pins 12. Supported.

An extension wire 20 is wound around the extension sheaves 13 and 13. The extension wire 20 is stretched to extend the distal boom 6, and has an intermediate portion wound around a folding member 51 of a second fastening member 50, which will be described later, fixed to the proximal end of the distal boom 6. After each end is guided to the extending sheaves 13 and wound around the extending sheaves 13, both ends thereof are the base ends of the cylinder body 7 a of the first telescopic cylinder 7. Are fastened via a first fastening member 30.

The retractable sheaves 21 are provided on both sides of the distal end of the cylinder body 8a of the second telescopic cylinder 8, respectively.
Are rotatably supported.

A retracting wire 22 is wound around the retracting sheaves 21 and 21. The retracting wire 22 is stretched to retract the tip boom 6, and after the intermediate portion is wound around the folding member 43 of the first fastening member 30,
After both ends are respectively guided to the shrinking sheaves 21 and 21 and wound around these shrinking sheaves 21 and 21, each end thereof is secondly fastened to the base end of the tip boom 6. Each is fixed via a member 50.

Reference numeral 23 in FIG. 1 designates a support member connected to the distal end of the mounting member 10.
3 is a second telescopic cylinder 8 when the boom 1 is telescopic.
And is slidably provided on the inner wall of the end boom 6.

As shown in FIG. 2, the first fastening member 30 secures the fixed portion 31 at the base end of the cylinder body 7a of the first telescopic cylinder 7 and both ends of the extension wire 20. The fixing portion 34 is detachably configured by a fixing plate 37.

The fixing portion 31 includes the fixing plate 3
7, a fitting pin 3 fitted into a through hole 38 formed at one end.
2, and a screw hole 33 is provided at a position corresponding to a screw hole (or through hole) 39 formed around the through hole 38 at one end of the fixing plate 37.

The fastening plate 34 has the fixing plate 3
7 are formed at the other end of the fixing plate 37, and a screw hole (or through hole) 4 formed around the through hole 40 at the other end of the fixing plate 37 is formed.
A screw hole 36 is provided at a position corresponding to 1.

The first fastening member 30 thus constructed
Is to fit the through holes 38 of the fixing plate 37 into the fitting pins 32 of the fixing portion 31, and to match the through holes 40 of the fixing plate 37 with the through holes 35 of the fastening portions 34 so that After the fastening pin 42 is inserted, each screw hole 3
The fixing portion 31 and the fastening portion 34 are fixed by tightening with screws (not shown) through the screw holes 39 and 41 corresponding to the holes 3 and 36. Further, by removing the screw, the fixing portion 31 and the fastening portion 34 can be easily separated.

As a result, the first fastening member 3 can be
0 does not need to be welded to the base end of the cylinder body 7a of the first telescopic cylinder 7 and can prevent heat-induced distortion of the first telescopic cylinder 7 due to welding and standardize the first telescopic cylinder 7 be able to.

Here, a fastening pin 42 inserted into the through hole 35 of the fastening portion 34 through the through hole 40 of the fixing plate 37.
Both ends are protruded laterally, and fastening rings 20a fixed to both ends of the extension wire 20 are engaged with these both ends. The fastening ring 20
The fastening pin for hooking a is not limited to the one fitted in the through hole 35 of the fastening part 34 as in this example, but may be one fixed on both sides of the fastening part 34 at an appropriate position.

Further, a folding member 43 for folding the middle part of the retracting wire 22 is fixed to the fastening part 34.

As shown in FIG. 3 to FIG. 5, the second fastening member 50 includes a mounting plate 52 provided with a folding member 51 for folding an intermediate portion of the extension wire 20, and a pin attached to the mounting plate 52. And a fixing pin 55 supported via a stopper 53 for removal.

The mounting plate 52 is fastened to the bottom of the end boom 6 by bolts 56 and nuts 57 together with a stopper 53.

The fixing pins 55 are used to lock the fixing rings 22a fixed to both ends of the retracting wire 22, and project horizontally from the stopper 53 into pin holes 55a formed in the middle thereof. The intermediate portion is supported by fitting the provided support pin 54. Both ends of the fixing pin 55 are supported by support holes 59 of a bracket 58 fixed to both side surfaces of the tip boom 6, and receive the reaction force of the retracting wire 22 by the bracket 58.

Reference numeral 60 in FIGS. 3 to 5 denotes a pad for the lower surface of the end boom 6.

The second fastening member 50 thus configured
According to the present invention, both ends of the retracting wire 22 can be easily fixed and the assembling work can be facilitated, and the configuration can be simplified to reduce the number of parts.

Next, the operation of the boom 1 configured as described above will be briefly described.

In the state shown in FIG. 1, first, when the first telescopic cylinder 7 is extended, the first intermediate boom 3 is extended. Next, when the second telescopic cylinder 8 is extended, the second intermediate boom 5 is extended, and the second telescopic cylinder 8 is extended.
The wire for extension 20 is extended by the extension of the sheave 1 for extension.
The end boom 6 is extended from the second intermediate boom 5 by this action. That is, the second intermediate boom 5 and the tip boom 6 extend simultaneously.

Next, when the second telescopic cylinder 8 is retracted from the state where the boom 1 is extended, the second intermediate boom 5 is retracted, and the second telescopic cylinder 8 is retracted, so that the retracting wire 22 is retracted. The end boom 6 is retracted by the sheaves 21 and 21, and the end boom 6 is retracted by this action. That is, the second intermediate boom 5 and the tip boom 6 are simultaneously retracted. Thereafter, when the first telescopic cylinder 7 is retracted, the first intermediate boom 3 is retracted.

[0033]

As described above, according to the first aspect of the present invention, the wire can be easily mounted, and
It is not necessary to weld the fastening member to the base end of the telescopic cylinder as in the related art, so that it is possible to prevent heat-induced distortion of the telescopic cylinder due to welding and to standardize the telescopic cylinder.

According to the second aspect of the present invention, assembling work such as attaching a wire to a fastening member can be easily performed, and the configuration is simplified to reduce the number of parts. Can be.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an entire configuration of a simultaneous telescopic boom according to the present invention.

FIG. 2 is an exploded perspective view showing a configuration of a first fastening member.

FIG. 3 is an exploded perspective view showing a configuration of a second fastening member.

FIG. 4 is a side view showing a configuration of a second fastening member.

FIG. 5 is a plan view showing a configuration of a second fastening member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Simultaneous telescopic boom 2 Base end boom (boom main body) 3 1st intermediate boom 5 2nd intermediate boom 6 Tip boom 20 Extension wire 20a Fastening ring 22 Retraction wire 22a Fastening ring 30 First fastening member 31 Fixed Part 34 Fastening part 37 Fixing plate 42 Fastening pin 50 Second fastening member 51 Folding member 52 Mounting plate 53 Stopper 55 Fastening pin 58 Bracket 59 Bracket support hole

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuo Ishida 3-43, Shirite, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture Shinmeiwa Industry Co., Ltd. Special Vehicle Equipment Division (56) References JP-A-58-100093 (JP, A) JP-A-57-126393 (JP, A) JP-A-60-130286 (JP, U) JP-A-63-62489 (JP, U)

Claims (2)

(57) [Scope of request for utility model registration] 1. A boom main body and a plurality of telescopic booms which are inserted into and retracted from the boom main body. Wires are stretched through these booms via sheaves, and the telescopic cylinders extend and contract. In the simultaneous telescopic boom configured so that the telescopic boom is simultaneously extended and contracted by the operation of the wire, an annular fastening ring is provided at both ends of the wire, and a stopper for engaging the fastening ring of the wire is provided. A fastening member includes a fastening portion provided with a fastening pin for hooking a fastening ring of the wire, and a fixing plate for detachably attaching the fastening portion to a fixed portion at a base end of the telescopic cylinder. A simultaneous telescopic boom wire terminal processing device. 2. A boom main body and a plurality of telescoping booms which are telescopically inserted into the boom main body, and a wire is stretched in these booms via sheaves, and the telescopic cylinder is extended and contracted. In the simultaneous telescopic boom configured so that the telescopic boom is simultaneously extended and contracted by the operation of the wire, an annular fastening ring is provided at both ends of the wire, and a stopper for engaging the fastening ring of the wire is provided. The attachment member includes a mounting plate provided with a folding member for folding back a middle part of the wire, and a fastening pin supported on the attachment plate via a stopper for pin removal, and both ends of the fastening pin are booms. A simultaneous telescopic boom wire terminal processing device supported by bracket support holes provided on both side surfaces of the boom.