JP7381990B2 - Outrigger device - Google Patents

Description

The present invention relates to a technology for an outrigger device characterized by the routing of an oil supply hose to a jack cylinder.

2. Description of the Related Art As an outrigger device installed in a work vehicle, an H-type outrigger is known in which a jack cylinder having a float at the tip of a rod is arranged vertically on both left and right sides of the vehicle. H-type outriggers can increase stability by increasing the distance between jack cylinders during work.

Therefore, the H-type outrigger is provided with a slide mechanism that extends the jack cylinder to the left and right of the vehicle body. The slide mechanism is constructed by fitting an inner slide box (hereinafter referred to as the "inner box") into an outer slide box (hereinafter referred to as the "outer box") so as to be able to freely slide. A jack cylinder is arranged at the tip of the inner box.

The H-type outrigger having a sliding mechanism requires a hydraulic hose (hereinafter referred to as an "oil supply hose") for supplying oil to the sliding jack cylinder. Both ends of the oil feed hose are connected to a hydraulic joint located in the outer box and a hydraulic joint of the jack cylinder, respectively.

An outrigger device as shown in FIG. 11 is known as an arrangement configuration of an oil supply hose (Patent Document 1). A support portion 104 is provided inside the top of the outer box 100. The lower end of the support portion 104 contacts the upper plate 103 of the inner box 102 at a position farther away than the upper plate 101 of the outer box 100. A space 105 is formed between the top plate 101 of the outer box 100 and the top plate 103 of the inner box 102 by the support portion 104 .

One end of an oil supply hose 107 is connected to a hydraulic joint 106 provided on the outer box 100 facing the space 105. The oil supply hose 107 passes through the space 105 and reaches deep inside the outer box 100, where it is folded back into a U-shape when viewed from the side. Further, the oil supply hose 107 enters the inner box 102 from an opening 108 at the base end of the inner box 102, and is connected to a hydraulic joint 110 of a jack cylinder 109 at the tip of the inner box 102 via the inside of the inner box 102.

By the way, in order to reduce the operating force when the inner box 102 is extended and retracted from the outer box 100, a configuration is adopted in which the inner box 102 is supported by rollers with respect to the outer box 100, as shown in FIG. The rollers 111 (hereinafter referred to as "inner box side rollers") arranged at the upper part of the base end of the inner box 102 contact the upper plate 101 of the outer box 100 and rotate as they slide. A roller 112 (hereinafter referred to as an "outer box roller") disposed at the lower end of the outer box 100 contacts the lower plate 113 of the inner box 102 to rotationally support the sliding inner box 102.

However, as shown in FIG. 12, which is a view taken along arrow A in FIG. 11, the U-shaped portion 115 of the oil supply hose 107 is arranged to approach the roller support 114 of the inner box roller 111. Therefore, the behavior of the oil feed hose 107 is not stable when the inner box 102 is slid, and a problem arises in which the oil feed hose 107 gets caught in the roller support 114.

Therefore, as shown in FIG. 13, by passing the U-shaped part 115 of the oil supply hose 107 through the inner upper right corner of the outer box 100 and the inner lower left corner of the inner box 102, as seen from the rear end of the inner box 102, The oil supply hose 107 is routed diagonally (in a diagonal line). Hereinafter, this wiring of the oil supply hose 107 shown in FIG. 13 will be referred to as "tasuki hooking". The cross-hanging makes it possible to stabilize the behavior of the oil feed hose 107 and suppress the oil feed hose 107 from being caught by the roller support 114. As a result of the above-mentioned developments, the method of routing the oil supply hose 107 by swiping has come to be adopted.

Utility Model Hei 2-105986

However, among work vehicles equipped with an outrigger device as shown in FIG. There are times when you want to do so. In that case, it is necessary to arrange the slide cylinder inside the inner box 102. Then, since the oil feed hose 107 that is hung in a sash is located on the diagonal line of the cross section of the inner box 102 (see FIG. 13), the slide cylinder and the oil feed hose 107 interfere with each other at the opening 108 at the rear end of the inner box 102. Put it away.

Therefore, the present invention proposes an outrigger device that allows the oil supply hose to be hooked even in a work vehicle in which a slide cylinder is arranged.

In the outrigger device of the first aspect of the invention, there is provided an outer box for sliding, an inner box that is slidably fitted into the outer box and has a jack cylinder at its tip, and an inner box that is disposed at a lower tip of the outer box and that is attached to the inner box. an outer box side support means that supports the lower plate while contacting the lower plate; an inner box side support means that is disposed on one side of the upper base end of the inner box and moves while contacting the upper plate of the outer box; An oil feed hose that connects the outer box side hydraulic joint to be arranged and the jack cylinder side hydraulic joint to be arranged in the jack cylinder, and an oil feed hose that is arranged in the inner box, and one end of which is connected to the tip of the inner box. a slide cylinder whose other end is pivotally supported by the outer box and which slides and drives the inner box with respect to the outer box, and the outer box has a support portion projecting downward at an upper end thereof. When the inner box is fitted into the outer box and the support portion comes into contact with the inner box, a space is formed between the upper plate of the outer box and the upper plate of the inner box. The oil hose runs from the outer box side hydraulic joint through the space along the other upper corner of the outer box toward the base end of the inner box, is bent into a U-shape, and is bent into an opening at the base end of the inner box. It enters the inner box from the top, goes toward the tip of the inner box along one lower corner of the inner box that is diagonal to the other upper corner of the outer box, and connects to the jack cylinder side hydraulic joint. In the outrigger device, the slide cylinder is arranged at an inner corner of the inner box on another diagonal line that intersects the diagonal line along which the oil supply hose is routed.

In the outrigger device of the first aspect of the invention, the slide cylinder can be placed in the inner box without interfering with the oil feed hose that is hung on the tack.

In the outrigger device of the second invention, the slide cylinder is arranged at an upper corner portion of one side of the inner box.

In the outrigger device of the second aspect of the invention, the slide cylinder can be placed in the inner box without interfering with the oil feed hose that is hung on the tack.

In the outrigger device according to the third aspect of the invention, the inner box side support means includes a roller support attached to the base end of the inner box and extending toward the base end, and rotatably pivoted to the end of the roller support. the roller support is formed in a U-shaped cross section with an open lower side, and the slide cylinder is configured such that a part of the slide cylinder is formed in an opening of the U-shaped cross section of the roller support. entered and placed.

In the outrigger device of the third invention, the roller support is formed in a U-shaped cross section with an open bottom, and the slide cylinder is arranged such that a part of the slide cylinder enters the opening of the U-shaped cross section of the roller support. Therefore, the slide cylinder can be placed as far away from the oil supply hose as possible while ensuring sufficient strength and rigidity of the roller support.

In the outrigger device of the fourth invention, the slide cylinder is arranged at the other lower corner of the inner box.

In the outrigger device of the fourth aspect of the invention, the slide cylinder can be placed in the inner box without interfering with the oil feed hose that is hung on the trestle.

With the outrigger device of the present invention, the oil feed hose can be hung on a swivel even in a large working vehicle in which a slide cylinder is arranged. This makes it possible to stabilize the behavior of the oil supply hose when the inner box slides, and to prevent the oil supply hose from being caught by the roller support.

1 is a crane device having an outrigger device according to the present invention. 2 is an outrigger device of the present invention as viewed from arrow B in FIG. 1. FIG. 3 is a diagram showing an inner box and a slide cylinder extracted from FIG. 2. FIG. 4 is a detailed view of section C in FIG. 3. FIG. It is a view taken along arrow D in FIG. 4. It is a figure explaining the wiring of the oil supply hose to the jack cylinder of an outrigger device. 7 is a view taken along arrow E in FIG. 6. FIG. 7 is a detailed view in the direction of arrow F in FIG. 6. FIG. FIG. 7 is a detailed view of the base end of the inner box of the outrigger device according to the second embodiment of the present invention. It is a figure explaining the wiring of the oil supply hose of the outrigger device concerning a 2nd embodiment. This is an outrigger device described in Patent Document 1. 12 is a view taken along arrow A in FIG. 11. FIG. FIG. 3 is a diagram illustrating a task.

(First embodiment)
FIG. 1 shows a crane device 2 having an outrigger device 1 according to a first embodiment of the present invention. The crane device 2 is a so-called vehicle-mounted type, and is a type that is mounted on the loading platform of a truck (not shown). The crane device 2 is mounted on a base 3 on the outrigger device 1 so that the swing post 4 can be rotated freely. The base end of the telescopic boom 5 is pivoted to the upper part of the swing post 4 so that the telescopic boom 5 can be raised and lowered freely. The telescopic boom 5 is driven to extend and contract by a built-in telescopic mechanism (not shown). Further, the telescopic boom 5 is driven to rise and fall by a hoisting cylinder 6 interposed between the swing post 4 and the telescoping boom 5. A hook block 7 at the tip of the telescopic boom 5 is hoisted up and lowered by a winch 8 on the swing post 4.

FIG. 2 is a diagram showing the outrigger device 1 of the present invention as viewed from arrow B in FIG. The outrigger device 1 according to the present embodiment has a symmetrical configuration with respect to the center line 9. Therefore, from now on, the details of one outrigger device 1 will be explained. The outrigger device 1 has an outer box 10 with a rectangular cross section for sliding. An inner box 11 for sliding is telescopically fitted into the outer box 10.

As shown in FIG. 2, the outer box 10 for sliding has a support portion 15 projecting downward at the upper end thereof. When the inner box 11 is fitted into the outer box 10 and the support part 15 comes into contact with the inner box 11, a space 16 is formed between the upper plate of the outer box 10 and the upper plate of the inner box 11.

An outer case roller 13 is arranged at the lower end of the outer case 10 for sliding. The outer box roller 13 contacts and rotationally supports the inner box 11. At the upper rear end of the inner box 11, an inner box roller 14 is arranged. The inner box side roller 14 contacts the upper plate of the outer box 10 and rotates. In this embodiment, a configuration in which rollers are used as the outer box side support means and the inner box side support means will be described, but a configuration in which a slide plate or the like is used in addition to rollers is also applicable.

FIG. 3 is a diagram showing the inner box 11 and slide cylinder 25 extracted from the outrigger device 1 of FIG. 2. The inner box 11 has two side plates 30 welded between an upper plate 31 and a lower plate 32 so as to be spaced apart laterally, and has a basic rectangular cross section. An outer box 12 for a jack is attached vertically to the tip of the inner box 11. A jack cylinder is housed inside the outer box 12 for the jack. As shown in FIG. 3, a slide cylinder 25 is arranged inside the inner box 11. The slide cylinder 25 has a rod tip fixed to the inner box 11 by a pin 26 . In this embodiment, an example of an outer box and an inner box for slides having a rectangular cross section will be described, but the present invention is also applicable to cross-sectional shapes other than rectangular.

FIG. 4 is a detailed view of section C in FIG. 3. Further, FIG. 5 is a view taken along arrow D in FIG. 4. Hereinafter, the arrangement of the slide cylinder 25 at the base end of the inner box 11 will be explained using FIGS. 4 and 5.

The inner box 11 includes a reinforcing member 18 that reinforces the base end lower part 17 of the basic cross section that constitutes the inner box 11. The proximal end of the upper plate 31 is extended and has a bent portion 35 diagonally downward. The proximal end portions of the left and right side plates 30 are in contact with and welded to the back surface of the reinforcing member 18 . The lower side of the reinforcing member 18 is in contact with and welded to the upper surface of the base end of the lower plate 32. The upper side of the reinforcing member 18 is in contact with and welded to the lower end of the bent portion 35 of the upper plate 31. In the inner box 11 according to the embodiment, an opening 19 is provided in the center of the reinforcing member 18.

A roller support 40 is welded to one side (left side) of the upper base end of the inner box 11. The roller support 40 is constructed by welding a first member 41 and a second member 42 together. As shown in FIG. 5, the first member 41 is bent into a U-shaped cross section that opens downward. As shown in FIG. 4, the first member 41 has one end welded to the bent portion 35 of the upper plate 31 of the inner box 11 and the reinforcing member 18. The other end of the first member 41 extends toward the proximal end of the inner box 11 .

As shown in FIG. 5, the second member 42 is bent into a U-shaped cross section that opens upward. The second member 42 is welded to the proximal end of the first member 41, as shown in FIG. The inner box roller 14 is rotatably attached to the second member 42 via a pin 43 .

The slide cylinder 25 is disposed so as to fit into an opening 45 having a U-shaped cross section in the first member 41 of the roller support 40 . This makes it possible to arrange the slide cylinder 25 at the upper left corner of the inner box 11 while avoiding interference with the roller support 40, as shown in FIG. Further, in order to ensure the strength of the roller support 40, it is possible to make the first member 41 sufficiently large. Note that 44 is a hydraulic port for supplying and discharging hydraulic oil to and from the slide cylinder 25.

FIG. 6 is a diagram illustrating the wiring of the oil feed hose 20 to the jack cylinder 21 of the outrigger device 1 (see FIG. 2). Further, FIG. 7 is a view taken along arrow E in FIG. 6. The outrigger device 1 is provided with a set of oil supply hoses 20 for the right side and a set for the left side, but the configurations thereof are completely the same. Therefore, from now on, the wiring of the right oil feed hose 20 will be explained.

As shown in FIG. 6, a jack cylinder 21 is arranged inside the outer box 12 for the jack. A jack cylinder side hydraulic joint 24 is attached to the upper part of the jack cylinder 21. Further, an outer case-side hydraulic joint 23 is attached to the outer case 10 for sliding.

As shown in FIG. 6 (FIG. 7), the oil supply hose 20 connected to the outer box-side hydraulic joint 23 moves inside the space 16 along the upper corner of the outer box 10 toward the base end of the inner box 11. Therefore, the oil supply hose 20 is bent into a U-shape and enters the inner box 11 through the opening 19 at the base end of the inner box 11. From here, the oil supply hose 20 runs toward the tip of the inner box 11 along the lower corner of the inner box 11, which is diagonal to the upper corner of the outer box 10, and is connected to the jack cylinder side hydraulic joint 24. .

As shown in FIG. 7, the oil supply hose 20 is a bundle of two single hoses, and the two parallel hoses constitute an outgoing and returning oil path. Further, in this embodiment, a detection cable 27 for detecting the extension of the jack cylinder is bundled with the oil supply hose 20 by a plurality of clamps 28 .

FIG. 8 is a detailed view in the direction of arrow F in FIG. 6. The oil supply hose 20 and the detection cable 27 that are hooked together are routed through the right side of the slide cylinder 25 and from the opening 19 of the reinforcing member 18 to the lower left corner inside the inner box 11. In this way, even though the slide cylinder 25 is disposed, the oil supply hose 20 can be routed without interference. Therefore, the behavior of the oil feed hose 20 when the inner box 11 is slid is stabilized. That is, the oil supply hose 20 does not approach the roller support 40, and there is no possibility of it getting caught.

(Second embodiment)
FIG. 9 is a detailed view of the base end of the inner box 51 of the outrigger device 50 according to the second embodiment of the invention. Components common to the outrigger device 1 according to the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. The lower right corner of the opening 53 of the reinforcing member 52 of the inner box 51 according to the second embodiment is rounded. A slide cylinder 25 is arranged close to the rounded corner portion.

FIG. 10 is a diagram illustrating the wiring of the oil feed hose 20 of the outrigger device 50 according to the second embodiment. The oil supply hose 20 and the detection cable 27 that are hooked together are routed from the opening 53 of the reinforcing member 52 to the lower left corner inside the inner box 51, passing along the left side of the slide cylinder 25.

Also in the second embodiment, the oil supply hose 20 can be routed in a swivel manner without interfering with the slide cylinder 25. Therefore, the behavior of the oil feed hose 20 when the inner box 51 is slid is stabilized. That is, the oil supply hose 20 does not approach the roller support 40, and there is no possibility of it getting caught.

Although preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Additions, omissions, substitutions, and other changes to the configuration are possible without departing from the spirit of the present invention. The invention is not limited by the above description, but is defined by the claims appended hereto.

1: Outrigger device 10: Outer box 11: Inner box 13: Outer box side roller (outer box side support means)
14: Inner box side roller (inner box side support means)
15: Support part 16: Space 19: Opening 20: Oil supply hose 25: Slide cylinder 45: Opening 50: Outrigger device 51: Inner box 53: Opening

Claims (4)

An outer box for the slide,
an inner box that is slidably fitted into the outer box and has a jack cylinder at its tip;
Outer box side support means that is disposed at the lower end of the outer box and supports the inner box while being in contact with the lower plate of the inner box;
inner box side support means that is arranged on one side of the upper base end of the inner box and moves while contacting the upper plate of the outer box;
an oil feed hose that connects an outer box-side hydraulic joint arranged in the outer box and a jack cylinder-side hydraulic joint arranged in the jack cylinder;
a slide cylinder disposed within the inner box, one end of which is pivotally supported by the distal end of the inner box, and the other end of which is pivotally supported by the outer box, for slidingly driving the inner box with respect to the outer box;
Equipped with
The outer box has a support portion projecting downward at the upper end of the outer box, and when the inner box is fitted into the outer box and the support portion comes into contact with the inner box, the upper plate of the outer box and A space is formed between the inner box and the upper plate,
The oil supply hose runs from the outer box-side hydraulic joint toward the base end of the inner box along the other upper corner of the outer box in the space, and is bent into a U-shape to reach the base end of the inner box. enters the inner box through the opening of the outer box, moves toward the tip of the inner box along one lower corner of the inner box that is diagonal to the other upper corner of the outer box, and connects the jack cylinder side hydraulic joint. It is an outrigger device with an oil supply hose called "Tasuki-kake" connected to the
The slide cylinder is an outrigger device disposed at an internal corner of the inner box on another diagonal line that intersects the diagonal line along which the oil supply hose is routed. The outrigger device according to claim 1, wherein the slide cylinder is arranged at an upper corner of one side of the inner box. The inner box side support means includes a roller support attached to the proximal end of the inner box and extending in the proximal direction, and a roller rotatably attached to the end of the roller support,
The roller support is formed in a U-shaped cross section with an open bottom,
The outrigger device according to claim 2, wherein the slide cylinder is disposed such that a part of the slide cylinder enters an opening of the U-shaped cross section of the roller support. The outrigger device according to claim 1, wherein the slide cylinder is arranged at the other lower corner of the inner box.

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