JPH10100871A - Housing device for outrigger float - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the housing device for an outrigger float, which can quickly house the outrigger float in the vicinity of an extremity at the end of a jack contracting operation. SOLUTION: This housing device 1 is equipped with a link 4 which is rotatably mounted to a rod by way of a pivot 12 supporting a float 25 while being off-centered from the center line (p) of the rod 20 toward the stretching direction of a beam 23, an abutting part 32 which is provided for the holding part 22 of a jack 19 that is fixedly adhered to the tip end part of the beam for holding the rod, and abuts against the arm part 4b of the link to be extended to the stretching direction of the beam from the pivot, in the vicinity of the end of the contracting operation of the rod, and with means 30 which is bridged between the holding part of the jack and the rod in such a way that it can be freely operated, and restricts the rotation of the rod. The link 4 is rotated around the pivot by letting the arm part 4 abut against the abutting part 32 as the rod 20 is operated so as to be contracted, and the float is so designed as to be moved in a space between a position faced to the lower end of the rod 20 and a housing position located above the aforesaid position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outrigger float storage device for storing a float (ground plate) of an outrigger device provided in a working vehicle such as a self-propelled crane.

[0002]

2. Description of the Related Art Generally, a work vehicle such as a self-propelled crane is provided with an outrigger device for supporting a vehicle body during a work such as a crane operation to prevent the vehicle body from tipping over.
Such an outrigger device includes an outrigger box installed on a body frame of a working vehicle, a horizontal support leg (hereinafter, referred to as an extendable beam) retractably stored in the outrigger box, and a distal end of the extendable beam. A vertical support leg (hereinafter, referred to as a jack) is provided to extend vertically below the telescopic beam, and a float as a ground plate attached to a lower end of the jack is provided. Then, the outrigger device normally lifts the vehicle body by extending the telescopic beam from the outrigger box toward the side of the vehicle body, extending the jack downward to ground the float at the lower end of the jack to the ground. I support it.

By the way, in such an outrigger device, the floating contact area (pressure receiving area) of the float is set so that the supporting force is sufficiently dispersed on the ground so that the vehicle body can be stably supported even on soft ground. It needs to be large enough. For this reason, large-sized floats having a large ground contact area are generally used in large-sized work vehicles such as large-sized cranes.

[0004] As described above, in a large working vehicle using a large-diameter float, when the outrigger device is stored and the vehicle is moved, if the float is attached to the lower end of the jack, the float may be attached to the vehicle body. It protrudes greatly to the side, and the width of the vehicle body increases accordingly. For this reason, there are problems such as exceeding the vehicle width limit on the road operation and the fact that the float protruding to the side of the vehicle body interferes with an obstacle when the vehicle is running.

[0005] Therefore, conventionally, in a large vehicle such as a large crane vehicle, when the outrigger device is stored and the vehicle travels, the on-site worker removes the float from the lower end of the jack and disturbs the travel of the vehicle. When the outrigger device is used, the worker takes out the float from the storage location and places it at the lower end of the jack.

[0006] However, the work of manually attaching and detaching the float to and from the jack and moving the float between the storage location and the jack as described above is extremely complicated, and this degrades the overall work efficiency. Has been invited.

[0007] In view of the above, various types of float storage mechanisms capable of easily and efficiently storing a float have been proposed and put into practical use. 5 and 6 show a conventional example of such a float storage mechanism.

The float storage mechanism shown in FIG. 5 pushes and pulls the lever 103 horizontally to move the float 102 to the storage position below the beam 100 (FIG. 5).
(The position shown in FIG. 5A) and the use position of the lower end of the jack 101 (the position shown in FIG. 5B).

The float storage mechanism shown in FIG. 6 operates the float 103 by operating the lever 103a.
02 from the use position A of the lower end of the jack 101 to the lower side of the notch 104 of the beam 100 and the beam 100
Can be moved obliquely upward to the storage position B, which is above the extension of the lower surface of.

[0010] However, although the storage mechanism shown in FIG. 5 can improve the efficiency of the float storage operation, after all, the operation is manually performed.
The float 102 cannot be used or stored unless the operator comes down from the cab (operator cab) and operates the lever 103. Besides, float 1
02 has to be stored and set to a use state, which requires considerable time and effort. That is,
After extending the beam 100, it is not possible to immediately shift to crane operation, and after storing the beam 100,
The vehicle cannot be run immediately. It is also more or less dangerous because of human power.

In general, it is desirable that a sufficient distance be maintained between the float at the storage position and the ground in order to prevent the float from interfering with the ground when traveling on rough roads. In the storage mechanism of FIG.
Is moved horizontally from the lower end position of the jack 101 and stored, the ground height of the float 102 at the time of storage is lower than the ground height of the lower surface of the beam 100 (outrigger box). Therefore, the float 102 may interfere with the ground when traveling on a rough road.

On the other hand, in the storage mechanism shown in FIG. 6, since the float 102 is stored above its use position, there is no possibility that the float 102 will interfere with the ground at the storage position. However, the operation is still performed by human power, and therefore, there is a problem similar to that in FIG.

[0013] On the other hand, on the other hand, many float storage mechanisms for automatically moving the float to the storage position have been developed. 7 and 8 show a conventional example of such an automatic float storage mechanism.

In the float storing mechanism shown in FIG. 7, when the beam is housed in the outrigger box 109 in a state of being completely contracted without overhanging,
The float 102 is stored in the storage position below the notch 104 of the beam and above the extension of the lower surface of the beam, but the beam protrudes and the outrigger box 1
09, the link 105 follows the operation.
Is rotated outward, and the float 102 is
Is moved to the use position at the lower end of the.

In the float storage mechanism shown in FIG. 8, when the beam 100 is housed in the outrigger box 109 in a completely contracted state without being extended, the float 102 has the bottom surface of the vehicle body. 8A is stored in the outer end side of the jack 101 (see FIG. 8A). However, when the beam 100 extends and projects from the outrigger box 109, the operation is stopped. Accordingly, the link 106 is rotated inward, and the float 102 is moved to the use position at the lower end of the jack 101 (see FIG. 8B).

However, in the float storing mechanism shown in FIG. 7, since the float 102 is not moved to the use position unless the beam is extended, the jack 101 is extended on the spot without extending the beam to support the vehicle body. It cannot be supported. Therefore, work in a narrow place where the overhang width of the beam is limited becomes impossible.

The float storage mechanism shown in FIG. 8 also moves the float 102 in synchronization with the extension of the beam 100, so that the jack 101 is extended on the spot without extending the beam 100 to support the vehicle body. Since the float 102 cannot be supported and is stored in a state in which the float 102 is turned outward and protrudes out of the vehicle width, there is a danger that the float 102 will come into contact with an operator during the storing process, and The float 102 in the retracted state may interfere with an obstacle.

On the other hand, Japanese Patent Publication No. 58-15336 proposes an improved automatic float storage mechanism which does not have the above-mentioned disadvantages. As shown in FIG. 9, in this float storage mechanism, a float 102 is attached to a tip of a piston rod 101 a of a jack 101 via a link 110 so as to be rotatable only.
Linked to one. When the piston rod is contracted upward from the use state shown in FIG. 9A, the guide pin 112 of the link 110 urged upward by the compression spring 113 as shown in FIG. 9B. It abuts on the guide groove 115a of the guide member 115. When the piston rod 101a is further contracted from the state where the guide pin 112 abuts the guide groove 115a in this manner, the link 110 is centered on the support shaft 118 by a downward force F acting on the arm 110a of the link 110. 9, the float 102 is stored in a storage position below the notch 104 of the beam 100 and above the extension of the lower surface of the beam 100 (FIG. 9). (C)). On the other hand, when the piston rod 101a is extended downward from the retracted state, the float 10
The link 110 is pivoted outward around the support shaft 118 by its own weight, and the float 102 is moved to the use position shown in FIG. In this case, the outward rotation of the link 110 due to its own weight of the float 102 is caused by the arm 110a.
Is assisted by the urging force of the compression spring 113 that raises the pressure. Therefore, the float 102 is reliably moved to the use position.

According to the float storage mechanism shown in FIG. 9, all the drawbacks of the float storage mechanism shown in FIGS. 5 to 8 can be covered. That is, since the float 102 automatically moves between the storage position and the use position in conjunction with the expansion and contraction operation of the jack 101, work efficiency is improved, and
If the jack 101 is extended, the float 102 is moved to the use position irrespective of the projecting operation of the beam 100. Therefore, the jack 101 is not extended without extending the beam 100.
Can be extended on the spot to support the vehicle body. Further, the float 102 can be stored at a high position from the ground without protruding outside the vehicle width.

[0020]

In the float storage mechanism shown in FIG. 9, a compression spring 113 is used to reliably move the float 102 to its use position. However, in an environment where mud or the like is inevitable, such as in a civil engineering work site, the use of the spring 113 as a component member in a particularly exposed portion of the outrigger device is likely to cause a malfunction and is not preferable.

In the float storage mechanism shown in FIG. 9, the ring 111 to which the link 110 is attached is provided so that the positioning of the guide pin 112 and the guide groove 115a is not impaired by the rotation of the piston rod 101a when the jack 101 expands and contracts. Is attached so that it can rotate with respect to the piston rod 101a (so that the link 110 does not rotate due to the rotation of the piston rod 101a).
The spring 113 restricts the rotation of the link 110 and the ring 111 as much as possible. Further, by forming the guide groove 115a engaged with the guide pin 112 into a complicated shape such as a relatively large semicircular shape, the spring 1 is rotated by the rotation force of the piston rod 101a.
The guide pin 112 is surely positioned in the guide groove 115a even if 13 is twisted. That is, since the spring 113 is used, the shape and other conditions must be given to its peripheral members in order to reliably position the guide pin 112 with respect to the guide groove 115a, and the structure itself is very complicated. It has become.

In general, it is desirable that the float 102 is located at the use position over a long stroke of the piston rod 101a in order to cope with irregularities on the ground. Is desirably performed quickly (with a short stroke of the piston rod 101a).

However, in the float storage mechanism shown in FIG. 9, a point of force at which a moment for rotating the link 110 inward is generated (the guide groove 115 against which the guide pin 112 abuts)
When the distance L (see FIG. 9C) between the center line a) and the center line passing through the rotation shaft 118 of the link 110 is set long, the float 102 is moved between the storage position and the use position. If the stroke (extension amount) of the piston rod 101a necessary for moving is long, for example, if the fulcrum of the supporting force is a place where the swelling is sharp, the jack is required before the float 102 moves to its use position. 10
The first supporting force acts on the ground, and the supporting force of the jack 101 cannot be properly applied to the ground via the float 102, so that stable supporting cannot be performed. That is, the stroke range (stroke use range) of the piston rod 101a in a state where the float 102 is located at the use position is reduced, so that it is impossible to cope with irregularities on the ground, and the float 102 cannot be stored quickly. .

The present invention has been made in view of the above circumstances, and an object of the present invention is to allow a float to be stored at a high position from the ground without protruding out of the vehicle width and to have a simple structure. Therefore, the float can be automatically moved between the retracted position and the use position in conjunction with the expansion and contraction operation of the jack irrespective of the projecting operation of the beam, and the float can be automatically moved near the end of the contraction operation of the jack. An object of the present invention is to provide an outrigger float storage device capable of performing a storing operation quickly.

[0025]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention comprises a beam that extends horizontally and expandably toward the side of a vehicle body, and a piston rod that can expand and contract vertically downward. And an outrigger float storage device for storing a float attached to a lower end of the piston rod, the outrigger device being provided on an outrigger device having a jack fixed to a tip end of the beam, and supporting the float, A link rotatably attached to the piston rod via a rotation support shaft that is eccentric from the center line of the rod in the beam extension direction, and a jack holding portion fixed to the tip of the beam and holding the piston rod. And an abutment with an arm of a link extending in a beam extending direction from the rotation support shaft near an end of a contraction operation of the piston rod. An abutting portion, and a rotation restricting means operably mounted between the holding portion of the jack and the piston rod, for restricting rotation of the piston rod, and an arm of a link accompanying a contraction operation of the piston rod. By rotating the link around the rotating shaft by the contact between the part and the contact part,
The float is moved between a use position facing the lower end of the piston rod and a storage position above the use position.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, the outrigger device includes an outrigger box 40 fixed to a body frame of a work vehicle (such as a crane truck) (not shown), a telescopic beam 23 retractably stored in the outrigger box 40, and a telescopic beam. And a hydraulic jack 19 fixed to the distal end of the hydraulic pump 23. The hydraulic jack 19 is constituted by a double-acting hydraulic cylinder. A cylinder portion 22 as a fixed side thereof is fixed to a tip of an expandable beam 23, and a piston rod 20 as a drive side thereof expands and contracts vertically below the expandable beam 23. It is supposed to work.
A float 25 is connected to the distal end of the piston rod 20 via an outrigger float storage device 1 described later. On the upper end surface of the float 25, a concave portion 25a that supports the spherical portion 20a provided at the lower end of the piston rod 20 is formed.

A notch 2 is provided at the end of the telescopic beam 23.
4 are provided. Also, a notch 41 corresponding to the notch 24 is provided at the tip of the outrigger box 40. And these notches 24, 4
By 1, a storage space S for storing the float 25 together with the outrigger float storage device 1 is formed below the outrigger box 40 and above an extension of the lower surface 40 a of the outrigger box 40. In addition,
The suffix 34 in the figure is a pressure oil supply line for supplying pressure oil into the cylinder portion 22 of the jack 19.

As shown in FIG. 1, the outrigger float storage device 1 has "C" -shaped links 4 and 4 arranged on both sides of a piston rod 20. FIG.
FIG. 4 shows only one link 4. Each of the links 4 and 4 is rotatably attached to the upper end of each of the brackets 2 and 2 extending upward from the end of the piston rod 20 on both sides of the piston rod 20 via a support shaft 12. Have been. In this case, the support shaft 12 serving as the rotation center of the link 4 is eccentric by a predetermined distance d from the center line p of the piston rod 20 to the side opposite to the storage space S (the direction in which the beam extends).

The link 4 has a first arm portion 4a extending downward from a portion through which the support shaft 12 penetrates, and a first arm portion 4a extending obliquely upward from the portion through which the support shaft 12 penetrates toward the side opposite to the storage space S. And two arms 4b.

An elongated hole 6 is formed in the first arm 4a of the link 4 along its longitudinal direction, and the pin 9 of the float 25 is supported in the elongated hole 6 so as to be vertically movable and swingable. Have been. More specifically, pins 9, 9 are projected from upper ends of connecting members 19, 19 (see FIG. 2) erected on both sides of the float 25, respectively. , 4 are movably mounted in slots 6,6.

A roller member 11 is rotatably attached to the end of the second arm 4b of the link 4. on the other hand,
The cylinder portion 22 of the jack 19 includes the piston rod 2
An abutment member 32 is provided at a position where the abutment member 32 comes into contact with the roller member 11 which moves upward together with the link 4 in accordance with the zero contraction operation. Therefore, when the piston rod 20 is contracted in a state where the roller member 11 is in contact with the abutting member 32, a downward force F acting on the second arm portion 4b (see FIGS. 2 and 3) (Refer to FIG. 3), it is possible to rotate inward (the storage space S side... Indicated by an arrow in the drawing) around the support shaft 12. The abutting member 32 also serves as an attachment bolt for attaching the cylinder portion 22 to the end of the telescopic beam 23.

A contact point where the roller member 11 abuts against the abutting member 32 (the link 4 is pivoted about the support shaft 12) so that the link 4 rotates largely around the support shaft 12 with a slight stroke of the piston rod 20. A point of force at which a moment to rotate is generated: the point of action of the force F) and the pivot 12 of the link 4
The distance L (see FIG. 2) from the center line passing through is set to be extremely short. In particular, in the present embodiment, the second arm 4b of the link 4 is set to have a short length so that the roller member 11 is positioned extremely close to the support shaft 12, and the abutment member 32 is connected to the roller member 11. Contact position, ie, the support shaft 12
Is provided at a position close to the center line passing through.

The rising height of each bracket 2, 2 is set so that the abutting member 32 and the roller member 11 come into contact with each other at the very end of the contraction operation of the piston rod 20. In particular, as the length of the second arm 4b is set shorter, the abutment member 32 and the roller member 11
The rising height of each bracket 2, 2 is set such that the amount of rotation of the link 4, which allows the float 25 to be stored in the storage space S by contraction of the piston rod 20 after abutment of the piston rod 20, is obtained. .

A stopper 15 which is in contact with the second arm 4b of the link 4 is fixed to the bracket 2. The stopper 15 abuts on the second arm 4 b to restrict the rotation of the link 4 about the support shaft 12, so that the center line of the second arm 4 b is aligned with the center line of the piston rod 20. Maintain a drooping condition that is coincident (or parallel) with p. As a result, the float 25 is positioned at a use position where the spherical portion 20a of the piston rod 20 and the concave portion 25a of the float 25 can be engaged.

On both sides of the jack 19, rotation stopping links 30, 30 for restricting the rotation of the piston rod 20 during the expansion / contraction operation are provided with the cylinder portion 22 and the piston rod 20.
It is operatively installed between the two. That is, the detent link 30 includes two link portions 30a and 30b, of which the first link portion 30a is
One end thereof is rotatably connected to a connecting portion 33 fixedly mounted. The other end of the first link portion 30a is rotatably connected to a second link portion 30b rotatably connected to the bracket 2 at the end of the piston rod 20.

Next, the operation of the outrigger float storage device 1 having the above configuration will be described. FIG. 1 shows a support mode in which the piston rod 20 of the jack 19 is extended in place without extending the beam 40 to support the vehicle body. In this state, the spherical portion 20a of the piston rod 20
Is engaged with the concave portion 25a of the float 25, and the hydraulic jack 1
9 is transmitted to the float 25 via the spherical portion 20a and the concave portion 25a, so that the vehicle body can be stably supported. Needless to say, it is possible to adopt a supporting form in which the telescopic beam 23 projects from the outrigger box 40 toward the side of the vehicle body by a predetermined length as necessary.

From the support state shown in FIG.
When the 0 is contracted upward, the link 4 moves upward, the lower end of the elongated hole 6 of the first arm 4a abuts against the pin 9 of the float 25, and the float 25 is suspended by the link 4. State (see FIG. 2). Then, in this state, when the piston rod 20 is contracted to near the end of the contracting operation, the roller member 11 of the second arm portion 4b comes into contact with the butting member 32 as shown in FIG. In the process of contraction of the piston rod 20, the rotation stopping links 30, 30 are folded while restricting the rotation of the piston rod 20, and the roller member 11 is brought into contact with the abutting member 3.
2. Position and contact accurately.

When the piston rod 20 is further contracted from the state shown in FIG. 2 where the roller member 11 and the abutting member 32 are in contact with each other, the link 4 is supported on the link 4 by a downward drag F acting on the second arm 4b. A rotation moment about the center 12 acts, whereby the link 4 rotates inward about the support shaft 12 and the float 25 suspended on the link 4 also rotates inward (see FIG. 3). Piston rod 20
At the end of the contraction operation, the float 25 is positioned at the storage position (see FIG. 4). This stored state is held by the hydraulic pressure that holds the piston rod 20 in the contracted state and the abutting member 32 that prevents the link 4 from rotating outward.

As described above, the roller member 11 and the abutting member 3 are located near the end of the contracting operation of the piston rod 20.
2, the roller member 11 is in contact with the abutment member 32.
Since the distance L between the contact point contacting the shaft 4 and the center line of the link 4 passing through the rotary support shaft 12 is set to be extremely short, the link 4 pivots greatly with a short stroke of the piston rod 20, so that the float 25 is securely stored in the storage position (space S). Further, when the link 4 rotates, the roller member 11 slightly moves outward along the contact surface of the abutting member 32, but this movement is smoothly performed by the friction reducing action accompanying the rotation of the roller member 11. . Therefore,
The rotation of the link 4 is performed smoothly. Also, float 2
Since the link 5 is swingably hung on the link 4 via the pin 9, the link 5 is moved to the storage position while being maintained in a horizontal state when the link 4 rotates.

When the piston rod 20 is extended downward from the retracted state of FIG. 4, the link 4 is moved to its first position.
Is pivoted outward around the support shaft 12 by the weight of the float 25 acting on the end of the arm 4a of the
The float 25 is moved to a use position (see FIG. 2) at which the spherical portion 20a of the above and the concave portion 25a of the float 25 can be engaged. In this case, since the support shaft 12 serving as the rotation center of the link 4 is eccentric by a predetermined distance d from the center line p of the piston rod 20 to the opposite side to the storage space S, the support shaft 12 due to the weight of the float 25 is centered. Is larger than when the support shaft 12 is located on the center line p of the piston rod 20, and the float 25 is reliably moved to its use position. In addition, the float 25 tries to rotate outward beyond the use position with the eccentricity of the support shaft 12, but the first arm 4 a of the link 4 abuts against the stopper 15, and the float 25 is further moved. The rotation of the float 25 is regulated, so that the float 25 is accurately positioned at its use position.

When the piston rod 20 is further extended from the state shown in FIG. 2 where the float 25 is located at the use position, the float 25 is grounded by the lowering of the link 4 and the piston rod 20 is moved as shown in FIG. 20
Is engaged with the concave portion 25a of the float 25, and the supporting force of the hydraulic jack 19 is transmitted to the float 25 via the spherical portion 20a and the concave portion 25a. Thereby, the vehicle body is stably supported. In addition,
In this support state, the reaction force from the float 25
Does not act on This is because the float 25 is supported on the link 4 via the pin 9 so as to be vertically movable.

As described above, the outrigger float storage device 1 according to the present embodiment includes the second arm 4 b of the link 4.
Is set to be short, and the distance L between the contact point where the roller member 11 contacts the abutment member 32 and the center line passing through the rotation support shaft 12 of the link 4 is set to be extremely short. Roller member 1 near the end of the 20
Even when the abutment member 32 is brought into contact with the abutment member 1, the float 25 can be reliably stored in the storage position by the large rotation of the link 4 due to the short stroke of the piston rod 20.
In other words, the float 25 can be maintained at the use position just before the contraction end of the piston rod 20,
It can be quickly stored in the storage position just before the end of the 0 contraction. Therefore, the float 25 can be maintained in its use position over a long stroke of the piston rod 20, and can sufficiently cope with irregularities on the ground.

Further, in the outrigger float storage device 1 of the present embodiment, since the rotation support shaft 12 of the link 4 is eccentric from the center line p of the piston rod 20 to the opposite side to the storage space S, the rotational moment of the link 4 Can be increased, and the float 25 can be reliably moved from the storage position to the use position only by its own weight. Therefore, it is not necessary to use the compression spring 113 as in the conventional example shown in FIG. Therefore, operation failure due to the use of the spring 113 can be avoided, and reliable operation can be ensured.

In the outrigger float storage device 1 of the present embodiment, the rotation of the piston rod 20 is restricted by the rotation preventing link 30 which does not cause twisting.
The roller member 11 can be accurately positioned and brought into contact with the butting member 32. That is, as in the conventional example shown in FIG.
1a, instead of being separated from the rotation,
Since the rotation of the piston rod 20 is forcibly prevented by 0, there is no need to provide a guide groove 115a having a complicated shape as in the conventional example shown in FIG. With a simple configuration that also serves as the member 32, the link 4 can be rotated by accurately positioning the roller member 11 with respect to the butting member 32.

Further, in the outrigger float storage device 1 of the present embodiment, the float 25 automatically moves between the storage position and the use position in conjunction with the expansion and contraction operation of the jack 19, so that safety and work efficiency are improved. Since the float 25 is moved to the use position irrespective of the projecting operation of the beam 23 as long as the jack 19 is extended,
The jack 40 may be extended in place without extending the beam 23 to support the vehicle body. Further, the float 25 can be stored at a high position from the ground without protruding outside the vehicle width.

[0046]

As described above, according to the outrigger float storage device of the present invention, the float can be stored at a high position from the ground without projecting out of the vehicle width, and the beam can be formed with a simple structure. The float can be automatically moved between the storage position and the use position in conjunction with the expansion and contraction operation of the jack, which is unrelated to the overhanging operation of the jack. Can be done quickly.

[Brief description of the drawings]

FIG. 1 is a side view of an outrigger device showing a state where a float is positioned at a use position by an outrigger float storage device according to an embodiment of the present invention.

FIG. 2 is a side view of the outrigger device showing a state in which the float is suspended at a use position by the outrigger float storage device according to one embodiment of the present invention.

FIG. 3 is a side view of the outrigger device showing a state in which the float is rotated from its use position by the outrigger float storage device according to one embodiment of the present invention.

FIG. 4 is a side view of the outrigger device showing a state in which the float is stored in a storage position by the outrigger float storage device according to one embodiment of the present invention.

FIG. 5 is a side view showing a first example of a conventional outrigger float storage device.

FIG. 6 is a side view showing a second example of the conventional outrigger float storage device.

FIG. 7 is a side view showing a third example of a conventional outrigger float storage device.

FIG. 8 is a side view showing a fourth example of the conventional outrigger float storage device.

FIG. 9 is a side view showing a fifth example of the conventional outrigger float storage device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Outrigger float storage device 2 ... Bracket 4 ... Link 4a ... First arm part 4b ... Second arm part (arm part) 12 ... Rotation support shaft 19 ... Jack 20 ... Piston rod 22 ... Cylinder part (holding part) 23 ... Beam 25 ... Float 31 ... Abutting part (contact part)

Claims (2)

[Claims] 1. An outrigger comprising: a beam extending horizontally to extend and contract horizontally toward a side of a vehicle body; and a jack having a piston rod capable of extending and contracting vertically downward and fixed to a tip end of the beam. An outrigger float storage device provided in the device for storing a float attached to a lower end of the piston rod, wherein the rotation support shaft that supports the float and is eccentric in a beam extending direction from a center line of the piston rod is provided. A link rotatably attached to the piston rod via a shaft, and a link fixed to a tip end of the beam and provided on a holding portion of a jack for holding the piston rod. An abutting portion that abuts on an arm of a link extending in a beam extending direction from the support shaft; and the holding portion of the jack and a piston rod. And a rotation restricting means for restricting the rotation of the piston rod. The link is rotated by the contact between the arm portion of the link and the contact portion accompanying the contraction operation of the piston rod. An outrigger float storage device, characterized in that the float is rotated about a support shaft to move a float between a use position facing a lower end of a piston rod and a storage position above the use position. 2. A contact point between an arm portion of a link and said contact portion is close to a trajectory of said rotary support shaft which moves up and down as the piston rod expands and contracts. 2. The outrigger float storage device according to 1.