JP2599707Y2 - Rear auxiliary outrigger device for work equipment mounted vehicle - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a rear auxiliary outrigger device for a working machine mounted type vehicle in which a working machine such as a small crane having an outrigger device is mounted on a chassis frame between a driver's cab and a carrier. It is about.

[0002]

2. Description of the Related Art As shown in FIG. 3, a vehicle A equipped with a working machine such as a small crane has a cab 1 and a carrier 2 as shown in FIG.
A work machine 5 having an outrigger device 4 is mounted on a pair of left and right chassis frames 3, 3, and an outrigger device 4 provided in the work machine 5 is installed to stably support a front portion of the vehicle and perform various operations. It is supposed to do. However, this type of working machine mounted vehicle A is configured such that the vehicle A is stably supported by the outrigger device 4 when working in the front portion of the vehicle, but the rear wheel is used when working in the rear portion of the vehicle. There is a problem that the rear wheel sinks due to the load at the time of work and the vehicle body is not stabilized.

[0003] Therefore, a pair of left and right chassis
Outrigger device 4 of the working machine 5
At the same time, a rear auxiliary outrigger device 6 that operates and stably supports the rear position of the vehicle A is mounted. The rear auxiliary outrigger device 6 is, as shown in FIG. 4, an outer cylinder 7 mounted horizontally below the pair of left and right chassis frames 3, 3 and slidably inserted into the outer cylinder 7. A pair of left and right inner cylinders 8, 8 'extending in opposite directions from both outer ends 7a, 7a' of the outer cylinder 7, and leg plates 9, 9 'attached to the distal ends of the inner cylinders 8, 8' And a pair of left and right jack devices 10, 10 'each having

As shown in FIG. 4, oil is supplied to the jack devices 10, 10 'by fixing one end 11a to the center of the outer cylinder 7 and storing the other end 11b, 11b' to the inner cylinder 8 in the retracted state. ,
8 ′, a pair of left and right fixed pipes 11
11 'and one end thereof are fixed to the free ends 11b, 11b' of the fixed pipes 11, 11 ', and guided from there toward the base ends of the inner cylinders 8, 8'. After reaching the end portions of the inner cylinders 8, 8 ', the other ends of the inner cylinders 8, 8' are connected to the jack devices 10, 10 '.
And a pair of left and right hydraulic hoses 12 and 12 '.

[0005]

SUMMARY OF THE INVENTION However, a hydraulic hose 1 for supplying and discharging pressurized oil to and from this type of jack device 10, 10 '.
The life of the parts 2 and 12 'is determined by the bending radius R of the U-shaped folded portion. The shorter the bending radius R, the shorter the life. Therefore, in the conventional rear auxiliary outrigger device, the hydraulic hose 12 is used. , 12 'are designed to have a large bending radius R to extend the life. Therefore, the outer dimension a (height dimension) of the outer cylinder 7 is considerably larger than the required outer dimension in view of strength, the weight increases, and the load clearance h between the lower surface of the outer cylinder 7 and the road surface is increased. And running performance on rough roads becomes poor.

[0006] In view of the above problems, the present invention is lightweight and low-cost.
A work machine equipped with a small outer cylinder that secures clearance h and that can increase the bending radius R of the hydraulic hose and extend the life of the hydraulic hose as much as possible. It is an object of the present invention to provide a rear auxiliary outrigger device for a type vehicle.

[0007]

In order to achieve the above object, a rear auxiliary outrigger device for a working machine-mounted vehicle according to the present invention is configured as follows. That is, the cab and a pair of left and right Shashifure between bed - after the work machine-mounted vehicles constituted by mounting a working machine provided with a outrigger device on arm
Part auxiliary outrigger device, the Shashifure - arm of the pair in the rear position Shashifure - an outer cylinder that is laterally placed fixedly in the lower part of the arm, both outside the outer cylinder interpolated slidably on the outer tube A rear auxiliary outrigger device for a working machine mounted type vehicle comprising a pair of left and right inner cylinders extending in opposite directions from ends and a pair of left and right jack devices attached to the distal ends of these inner cylinders and having leg plates at lower ends. A hole is formed on one side surface of the outer cylinder from the center to both outer ends of the outer cylinder, the slot extending at least half the length of sliding of the inner cylinder. One end is fixed to an outer surface of the outer cylinder at an appropriate position on one side, and guided from the center of the outer cylinder through the elongated hole to be introduced into the outer cylinder.
After being folded back into a U-shape in a plan view , the working machine mounted type is configured to perform a pair of left and right hydraulic hoses connected to the jack device at the other end via the base end of the inner cylinder. Rear auxiliary outrigger device for vehicles.

[0008]

The rear auxiliary outrigger device of the present invention constructed as described above has a pair of left and right hydraulic hoses for forming a long hole in one side surface of the outer cylinder to supply and discharge pressure oil to a pair of right and left jack devices. To
Since it is configured to pass through the inside of this elongated hole from one outer surface of the outer cylinder and to introduce it into the outer cylinder, the bending radius R of the hydraulic hose is
It can be set large regardless of the external dimensions of the outer cylinder,
The life of the hydraulic hose can be extended. Also, the outer dimensions of the outer cylinder can be designed according to the strength of the outer cylinder or the inner cylinder irrespective of the bending radius R of the hydraulic hose, so that the outer cylinder becomes smaller, lighter and has a sufficient load clearance h. Can be secured.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a rear auxiliary outrigger device B of the present invention will be described.
Will be described based on FIG. 1 and FIG. In addition, the code | symbol A used in the description of a prior art, and 1-10, 8'-1
0 ′ is used as a synonym in the following description.

The outer cylinder 7 comprises a pair of left and right chassis frames 3,
3 is attached to the lower part by brackets 13 and 13 'in a suspended state. The pair of left and right inner cylinders 8 and 8 ′ are slidably inserted into the outer cylinder 7 and both outer ends 7 a and 7 a ′ of the outer cylinder 7.
Are installed so as to extend in opposite directions from each other, and are stored in the outer cylinder 7 by human power (the position shown by the solid line in FIG. 1), and the extended position extended from the outer cylinder 7 (the position shown by the chain line in FIG. 1). The overhang can be adjusted between and.

Reference numerals 14 and 14 'denote storage fixing devices for fixing the inner cylinders 8 and 8' to the storage positions in order to prevent the inner cylinders 8 and 8 'from extending and hindering the traveling of the vehicle A when traveling. It is. The storage and fixing devices 14, 14 'are fixed pins 14a, 14a' attached to the ends of the outer cylinder 7, and pins provided at the distal ends of the inner cylinders 8, 8 'to receive the fixed pins 14a, 14a'. Hole 14
b, 14b '. Reference numerals 15 and 15 'denote support rollers mounted on both ends of the outer cylinder 7 so as to roll and support the inner cylinders 8 and 8'.

The jack devices 10, 10 'are provided with outer casings 16, 16'.
And inner boxes 17, 17 'slidably interposed in the outer boxes 16, 16' and provided with leg plates 9, 9 'at the lower end;
A hydraulic cylinder 18, 18 'is interposed between the inner box 16' and the inner box 17, 17 'to extend and retract the inner box 17, 17' with respect to the outer box 16, 16 '. Support device 20, 20 '
, So that they are rotatably attached to the distal ends of the inner cylinders 8, 8 '.

The jack rotation support devices 20 and 20 'are provided with bosses 21 and 21' which penetrate the vertical standing plates 8a and 8a 'of the inner cylinders 8 and 8' and are mounted so that their axes are horizontal. Hollow shafts 22, 22 ', which are erected at positions near the lower ends of the outer boxes 16, 16' of the jack devices 10, 10 'and are rotatably inserted into the bosses 21, 21'. ′ To prevent the hollow shafts 22 and 22 ′ from coming off.
The storage position (the position shown in the right side of FIG. 1) in which the 3 ′ and the jack devices 10 and 10 ′ are not hindered by the traveling movement, and the working position (the left solid line in FIG. 1) in which the work is performed vertically. (The position shown in the figure).

The rotation fixing devices 24, 24 'are fixed with fixing pins 26, 26' attached to brackets 25, 25 'projecting laterally from outer boxes 16, 16' of the jack devices 10, 10 '. The pin holes 27, 27 'for fixing the storage position and the pin holes 28, 28' for fixing the working position, which are provided on the end standing plates 8a, 8a 'of the inner cylinders 8, 8' at a 90 ° distance from each other. And the jacks 10, 10 'are positioned horizontally and the fixing pins
26, 26 'can be fixed to the retracted position by inserting them into the pin holes 27, 27'. The jack devices 10, 10 'are positioned vertically and the fixing pins 26, 26' are inserted into the pin holes 28, 28. ′, It can be fixed in the working position.

Reference numerals 29, 29 'denote left and right chassis frames 3, 3 respectively.
And a length L / 2 substantially half of the moving distance L of the inner cylinders 8 and 8 'from the center of one side surface 7b of the outer cylinder 7 to both outer ends of the outer cylinder 7.
It is a long hole drilled across. 30 and 30 'are one side 7 of the outer cylinder 7 for supplying and discharging pressure oil to and from the jacking devices 10 and 10'.
b A pair of left and right (two) hydraulic hoses disposed between the supply / discharge ports 31, 31 'provided at positions near both ends of the outer surface and the hydraulic cylinders 18, 18' of the jack devices 10, 10 '. The pair of left and right hydraulic hoses 30, 30 'are connected at one end 30a, 30a' to the supply / discharge port 3.
1, 31 ', from which it is guided to the center of the outer cylinder 7, passes through the slots 29, 29' and is introduced into the outer cylinder 7, where it is U-shaped in plan view. After being folded back into the shape , they are once locked to the base ends of the inner cylinders 8, 8 'by the locking members 32, 32'. Then, from the base end of the inner cylinder 8, 8 ', the inner cylinder 8,
After being guided by the tip of 8 'and passing through the hollow shafts 22 and 22', they pass through the outer boxes 16 and 16 'of the jack devices 10 and 10',
The other end 30b, 30b 'is connected to the supply / discharge port of the hydraulic cylinder 18, 18'.
The pipe is connected to 33, 33 '.

Reference numeral 34 denotes a pair of left and right hydraulic hoses 3
Numerals 0 and 30 'are covers for preventing damage caused by flying stones or the like during running, and preventing rainwater and foreign matter from entering the outer cylinder 7 from the elongated holes 29 and 29'.

Next, the operation will be described. First, a case will be described in which the rear auxiliary outrigger device B is installed together with the outrigger device 4 provided in the working machine 5 in order to perform work using the working machine 5. To install the rear auxiliary outrigger device B, first, the fixing pins 14a, 14a 'are pulled out to release the fixing of the inner cylinders 8, 8', and then the inner cylinders 8, 8 'are pulled out from the retracted position to the extended position . Fixing pins 14a, 1
4a 'is inserted and the inner cylinders 8, 8' are fixed at the extended positions.
Next, the fixing pins 26, 26 'are removed, and the jack device 10,
After releasing the fixation of 10 ', the jack devices 10, 10'
Is rotated from the storage position to the working position, and the fixing pins 26 and 2 are rotated.
6 'into the pin holes 28, 28'
It is sufficient to fix 0,10 'to the working position. As a result, the jack devices 10, 10 'are fixed in the working position, so that the hydraulic hoses 30,
If pressure oil is supplied to the hydraulic cylinders 18 and 18 'via the 30', the vehicle A can be jacked up by the jack devices 10 and 10 'and can be stably supported.

When the inner cylinders 8, 8 'are slid to the retracted position or the extended position, the U-shaped hydraulic hoses 30, 30' are moved with the movement of the inner cylinders 8, 8 '. While the folded portion moves in the outer cylinder 7, the hydraulic hoses 30 and 30 ′ are introduced into the outer cylinder 7 through the elongated holes 29 and 29 ′ from the outer surface on one side of the outer cylinder 7. As a result, the bending radius R of the folded portion can be set large irrespective of the outer dimensions of the outer cylinder 7 (the width of the outer cylinder 7). The life of 30, 30 'can be extended.

The outer dimensions of the outer cylinder 7 are determined by the hydraulic hose 3
Regardless of the bending radius R of 0, 30 ', it can be determined by the strength of the outer cylinder 7 and the inner cylinders 8, 8', so that the outer dimensions of the outer cylinder 7 can be designed to be small, lightweight and The road clearance h between the lower surface of the cylinder 7 and the road surface can be ensured, and the running performance on uneven terrain can be improved.

Since the outer cylinder 7 is provided with the elongated holes 29, 29 ', the strength is reduced accordingly.
The position where 9 'is provided is located at the central portion of the outer cylinder 7, that is, between the pair of left and right chassis frames 3, 3 having relatively small bending stress. There is no risk that 7 will be damaged.

When the rear auxiliary outrigger device B is stored, the reverse operation may be performed.

In the above embodiment, the jack device 10,
Although the example in which the 10 'is rotatably attached to the distal ends of the inner cylinders 8, 8' has been described, the rear auxiliary outrigger device of the present invention is not limited to this, and the jack device 10, 10 is not limited thereto.
Of course, 10 'may be fixedly attached to the tip of the inner cylinder 8, 8'. In the above embodiment,
Although the example in which the two left and right long holes 29 and 29 'are provided has been described, it goes without saying that this may be one long hole.

[0023]

Advantages of the Invention The rear auxiliary outrigger device in the working machine-equipped vehicle of the present invention configured as described above has a small outer cylinder despite being light in weight and having a small external dimension capable of securing a load clearance. With a very simple structure in which a long hole is formed in the cylinder and a hydraulic hose for supplying and discharging pressure oil to and from the jack device is introduced into the outer cylinder through the long hole. The bending radius R of the hose
This has an excellent effect that the life of the metal can be extended.

[Brief description of the drawings]

FIG. 1 is an explanatory side view of the rear auxiliary outrigger device of the present invention.

FIG. 2 is an explanatory plan view of the rear auxiliary outrigger device.

FIG. 3 is an explanatory diagram of a rear auxiliary outrigger device in a work machine-mounted vehicle.

FIG. 4 is an explanatory view of a conventional rear auxiliary outrigger device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Operator's cab 2 Carrier 3 and 3 Chassis frame 4 Outrigger device 5 Working machine A Vehicle equipped with working machine B Rear auxiliary outrigger device 7 Outer cylinder 8, 8 'Inner cylinder 9, 9' Leg plate 10, 10 'Jack device 29, 29 'elongate hole 30, 30' hydraulic hose

Claims (1)

(57) [Scope of request for utility model registration] A rear auxiliary outrigger device for a working machine mounted vehicle having a working machine equipped with an outrigger device mounted on a pair of left and right chassis frames between a cab and a loading bed,
An outer cylinder horizontally fixed below the pair of left and right chassis frames at a rear position of the chassis frame; and an outer cylinder slidably inserted into the outer cylinder and opposite to each other from both outer ends of the outer cylinder. A rear auxiliary outrigger device for a working machine mounted type vehicle comprising a pair of left and right inner cylinders extended and a pair of left and right jack devices attached to the distal ends of the inner cylinders and having a leg plate at a lower end, A long hole extending at least half of the sliding distance of the inner cylinder is formed on one side of the cylinder in the direction of both outer ends of the outer cylinder from the center portion, and oil is supplied to the pair of left and right jack devices at one end. Is fixed at a suitable position on the outer surface of one side of the outer cylinder, from here is guided to the center of the outer cylinder, passes through the elongated hole, is introduced into the outer cylinder, and is folded back into a U-shape in plan view in the outer cylinder. After that, a pair of left and right oils with the other end connected to the jack device via the inner cylinder base end A rear auxiliary outrigger device for a vehicle equipped with a working machine, wherein the rear auxiliary outrigger device is configured to be operated by a pressure hose.