JP4179747B2 - Outrigger device for work vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an outrigger device that is installed in a work vehicle such as a crane and secures the stability of the work vehicle during work.
[0002]
[Prior art]
Conventionally, an outrigger device that can adjust the length is attached to each of the four front, rear, left, and right corners of the work vehicle, and the length (full length) of these outrigger devices is appropriately adjusted, so that the work at the time of work can be performed. This prevents the vehicle from falling and ensures safety. Here, as shown in FIG. 7, the outrigger device is formed so as to substantially match the shape of the hollow portion in the cylindrical member with respect to the cylindrical member fixedly attached to the vehicle body side of the working vehicle. The total length dimension is adjusted by inserting the inserted sliding member in a slidable state and appropriately adjusting the length of the sliding member protruding from the cylindrical member.
[0003]
[Problems to be solved by the invention]
As shown in FIG. 7, the conventional outrigger device 101 is provided with one fixing member insertion hole 103 in the cylindrical member 102 and a plurality of fixing member insertion holes 105 in the sliding member 104. Therefore, as shown in FIG. 8, the outrigger device 101 can adjust the overall length in a stepwise manner in accordance with the size of the interval between the fixture insertion holes 105 of the sliding member 104. In FIG. 8, the sliding member 104 is provided with four fixture insertion holes 105, and is defined by a pair of outrigger devices 101 (for example, a pair of left and right outrigger devices located at the front of the working vehicle). The width dimension to be determined is, for example, 6.3 m between A and A, 5.9 m between B and B, 5.0 m between C and C, and 3.6 m between D and D. As the distance between the fixing tool insertion holes 105 of the sliding member 104 is smaller and the number of the fixing tool insertion holes 105 is larger, finer dimension adjustment becomes possible, and usability of the outrigger device 101 becomes better. However, if the distance between the fixing tool insertion holes 105 of the sliding member 104 is reduced to increase the number of the fixing tool insertion holes 105, a structural problem such as a reduction in strength of the sliding member 104 occurs.
[0004]
On the other hand, when the number of the fixing tool insertion holes 103 in the cylindrical member 102 is made plural, a portion in which the fixing tool insertion hole 103 can be drilled (a cylindrical space in which an appropriate space for attaching the fixing tool exists above is present. Since the upper surface portion of the member 102 is limited within a very narrow range due to the presence of the vehicle main body 107, it is practically difficult.
Therefore, the present invention adjusts the overall length (the total length of the tubular member 102 and the sliding member 104) without adopting a method such as increasing the number of the fixture insertion holes 105 of the sliding member 104. It is an object of the present invention to provide an outrigger device that can perform the above in more detail.
[0005]
[Means for Solving the Problems]
The outrigger device for a working vehicle according to claim 1 of the present invention is located on the vehicle main body side of the working vehicle (for example, a crane such as a rough terrain crane) (specifically, below the revolving structure including the driver's seat, A cylindrical member that is fixed to a portion of the vehicle frame that is placed in a stationary state during work, and the tubular member that adjusts the length of the working vehicle that protrudes laterally from the vehicle body. An outrigger device for a working vehicle comprising a rod-shaped sliding member that is partially inserted into the cylindrical member and slidably disposed with respect to the cylindrical member,
The cylindrical member is formed to project laterally from an end of the cylindrical main body that is opposite to a side where the vehicle main body of the working vehicle is located, and An auxiliary portion having a plurality of fixture insertion holes that are perforated at an appropriate interval in a direction projecting to the side,
A side for allowing the sliding member to pass through the fixing tool so as to match a desired fixing tool insertion hole selected from a plurality of fixing tool insertion holes formed in the auxiliary portion of the cylindrical member. A plurality of fixing tool insertion holes (specifically, fixing tool insertion holes used when the overall length of the outrigger device is the maximum dimension, and a minimum dimension) A fixing tool insertion hole to be used, and one or more fixing tool insertion holes to be used when an intermediate state between a maximum dimension and a minimum dimension is provided as necessary.
If comprised in this way, the full length dimension of an outrigger apparatus can be adjusted more finely than before, without increasing the number of fixing tool penetration holes, such as a sliding member which is an existing structural member.
[0006]
In the outrigger device for a working vehicle, the auxiliary portion of the cylindrical member is formed so as to protrude from the upper edge of the cylindrical main body in a cantilever shape (for example, a flat plate) ) (Claim 2).
If comprised in this way, while the auxiliary part of a cylindrical member can be produced easily, the operation | work at the time of fixing an auxiliary part to a cylindrical main-body part can also be performed easily.
[0007]
In the outrigger device for a working vehicle, a fixing tool insertion hole (for example, a hole located farthest from the vehicle body) and a fixing tool insertion hole ( For example, the distance between the holes located closest to the vehicle main body is usually determined to be smaller than the distance between the fixture insertion holes formed in the sliding member (claim 3).
If comprised in this way, the objective of this invention of the fine adjustment of the full length dimension of an outrigger apparatus can be achieved, without making the length of the auxiliary | assistant part of a cylindrical member unnecessarily large. In particular, when the auxiliary part is formed in the shape of a cantilever, the extension length of the auxiliary part should be made as small as possible so that excessive force is not applied to the joint between the cylindrical main body part and the auxiliary part. Therefore, the number of fixing tool insertion holes provided in the auxiliary part is kept to the minimum necessary, and the extension length of the auxiliary part (the length protruding in the side from the vehicle body) is reduced to the minimum necessary dimension. It is preferable to suppress.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example of the outrigger device of the present invention will be described based on the drawings.
FIG. 1 is a perspective view showing a working vehicle (however, a part of the telescopic beam is omitted) when the outrigger device of the present invention is used, and FIG. 2 is a non-use state (when stored) of the outrigger device of the present invention. FIG. 3 is a perspective view partially showing an example of the outrigger device of the present invention, and FIG. 4 shows an auxiliary portion which is a constituent member of the outrigger device shown in FIG. FIG. 5 is a sectional view showing an auxiliary portion cut along line AA in FIG. 4, and FIG. 6 is a perspective view partially showing another example of the outrigger device of the present invention.
[0009]
As shown in FIGS. 1 to 3, the outrigger device 1 for a working vehicle according to the present invention includes a cylindrical member 4 fixed to the vehicle main body 3 side of the working vehicle (in this example, a rough terrain crane), In order to adjust the length of the vehicle body 3 projecting sideways (left and right direction), it is partially inserted into the tubular member 4 and slidably disposed with respect to the tubular member 4. The rod-shaped sliding member 5 is provided. The outrigger device 2 can be expanded and contracted by the sliding member 5 sliding inside the cylindrical member 4.
The outrigger device 2 of the present invention can be widely applied to various working vehicles other than the rough terrain crane. The target work vehicles include cranes other than rough terrain cranes (for example, truck cranes), aerial work vehicles, and the like.
[0010]
A rough terrain crane (work vehicle) 1 shown in FIG. 1 includes an upper turning body 6 and a lower traveling body 7. The swivel body 6 includes a telescopic beam 8 that can be raised and lowered to an appropriate height and a cab 9, and can swivel in a horizontal direction with respect to the traveling body 7. The traveling body 7 includes a vehicle frame 10, an outrigger device 2 attached to the vehicle frame 10, a tire 11, a prime mover, and the like. In the present specification, the “vehicle main body” (reference numeral 3 in FIG. 1) means a portion placed in a stationary state when working with the work vehicle 1, that is, the vehicle frame 10 and the vehicle frame 10. Means the attached part.
[0011]
The outrigger device 2 shown in FIG. 1 is called an X-type outrigger device. That is, the outrigger device 2 includes a movable body (specifically, a device that can extend and contract in a substantially horizontal direction as a support body that protrudes to the side in order to prevent the vehicle from overturning during work), and a movable body. And a support portion (specifically, a cylinder device) 12 that raises and lowers.
The movable body includes a sliding member 5 having a ground plate 13 at an end thereof and a cylindrical member 4 that accommodates the sliding member 5, and the shaft portion 14 is centered by raising and lowering a support portion (cylinder device) 12. Can swing up and down. The outrigger device 2 is arranged on the left and right with respect to each of the front portion and the rear portion of the vehicle main body 3, and as shown in FIG. Since the devices 2 and 2 intersect with each other in a substantially X-shape, they are called X-type.
[0012]
As shown in FIG. 3, the cylindrical member 4 includes a cylindrical main body 15 and an opening of the cylindrical main body 15 (on the end opposite to the side where the vehicle main body is located). It consists of a flat auxiliary portion 16 extending in a cantilever-like manner from the upper edge of the opening portion for inserting the moving member 5.
Here, the cylindrical main-body part 15 is formed in the square cylinder shape which has a rectangular longitudinal cross section. The auxiliary portion 16 is formed in a shape in which a portion (upper edge portion) that forms the upper surface of the cylindrical main body portion 15 extends laterally.
[0013]
The auxiliary portion 16 is completely fixed to the upper edge portion of the cylindrical main body portion 15 by welding, or is detachably fixed by a fixing tool such as a bolt. When the auxiliary portion 16 is fixed by a fixing tool such as a bolt, the auxiliary portion 16 can be removed when the outrigger device 2 is not used.
The auxiliary portion 16 has a plurality of fixture insertion holes 17 that are formed at appropriate intervals in a direction projecting laterally (a direction away from the vehicle body 3 in the left-right direction). The number of the fixture insertion holes 17 is usually 3 to 8, and preferably 5 to 7. The interval between the fixture insertion holes 17 is usually set to a certain distance (for example, 100 mm).
[0014]
An example of the auxiliary unit 16 is shown in FIGS. The auxiliary portion 16 is extended substantially perpendicularly to the flat contact portion 16a (width: 200 mm, thickness: 12 mm) for welding and fixing to the cylindrical main body portion 15 and the contact portion 16a. The flat plate portion 16b (width: 200 mm, length: 700 mm, thickness: 12 mm) is formed, and six fixing member insertion holes 17 are drilled through the flat plate portion 16b at intervals of 100 mm. Yes.
[0015]
The sliding member 5 is formed in such a shape that one side (side close to the vehicle body 3) is partially inserted into the cylindrical member 4 and can slide by reciprocating linearly in the inserted direction. ing.
A plurality of (two or more) fixing tool insertion holes 18 are formed in the upper surface of the sliding member 5 at appropriate intervals along the longitudinal direction (direction projecting laterally from the vehicle body). The fixture insertion hole 18 of the sliding member 5 is aligned with the fixture insertion hole 17 of the auxiliary portion 16 of the cylindrical member 4, and then is fixed by the fixture 19 (for example, a steel pin). 4 for fixing.
[0016]
If the cylindrical member 4 does not include the auxiliary portion 16, only one fixture insertion hole 20 formed in the cylindrical main body portion 15 of the cylindrical member 4 and the sliding member 5. The sliding member 5 is fixed to the cylindrical member 4 by inserting any one of the plurality of fixing tool insertion holes 18 so that the positions thereof coincide with each other and the fixing tool 19 is inserted. In this case, the overall length of the outrigger device 2 can be adjusted for each interval (for example, about 400 to 700 mm) of the fixing tool insertion holes 18 of the sliding member 5, and between the fixing tool insertion holes 18. The sliding member 5 cannot be fixed at the intermediate position. In this regard, in the present invention, since the auxiliary tool 16 having a plurality of fixing tool insertion holes 17 that enables fine adjustment of the dimensions is provided, the overall length dimension of the outrigger device 2 is set at every smaller interval (for example, 100 mm). Can be adjusted.
[0017]
Fixture insertion hole at one end (the farthest from the vehicle body) excluding the fixture insertion hole 17 located in the middle among the plurality of fixture insertion holes 17 formed in the auxiliary portion 16 of the tubular member 4 17 and the other end (the side closest to the vehicle main body) of the fixture insertion hole 17 is the distance between the fixture insertion holes 18 drilled in the sliding member 5 (three or more holes exist, and these holes If the interval is different, it may be determined to be smaller than the interval having the largest dimension. Thereby, the length of the auxiliary portion 16 of the cylindrical member 4 is not formed unnecessarily large, and a problem in strength does not occur at the base portion (joining portion) of the auxiliary portion 16 formed in a cantilever shape. .
[0018]
Next, the usage method of the outrigger apparatus 2 of this invention is demonstrated.
When the outrigger device 2 is not in use, as shown in FIG. 2, the side wall of the vehicle main body 3 and the grounding plate 13 are located on substantially the same plane and are integrated and accommodated with the vehicle main body 3. Placed. At the time of use (work), as shown in FIG. 1, the support member (cylinder device) 12 is extended, and the cylindrical member 4 is rotated downward and is accommodated in the cylindrical member 4. Since the sliding member 5 extends toward the side of the vehicle body 3, the outrigger device 2 obtains a desired overall length with the ground plate 13 grounded. When the support member (cylinder device) 12 extends long, the angle of the tubular member 4 with respect to the horizontal plane increases. Therefore, the overall length of the outrigger device 2 decreases, and when the support member (cylinder device) 12 extends short, the horizontal plane. Since the angle of the tubular member 4 with respect to the outer trigger device 2 becomes smaller, the overall length of the outrigger device 2 becomes larger. When the overall length of the outrigger device 2 is large, a range in which the telescopic beam 8 of the revolving structure 6 on the vehicle body 3 can be projected in the horizontal direction with respect to the direction in which the outrigger device 2 projects (workable range). ) Is widened, and conversely, when the overall length of the outrigger device 2 is small, the telescopic beam 8 of the revolving body 6 on the vehicle body 3 projects in the horizontal direction with respect to the direction in which the outrigger device 2 projects. The range that can be reduced.
[0019]
The outrigger device 2 of the present invention can be applied not only to the X type but also to the H type.
As shown in FIG. 6, the H-type outrigger device 21 includes a sliding member 23 in which a grounding cylinder portion 22 slidable in the vertical direction is fixed to an end, and a cylindrical member 24 that houses the sliding member 23. Consists of. The grounding cylinder portion 22 includes a cylindrical body 22a, a rod-shaped sliding body 22b that can slide up and down in the cylindrical body 22a, and a grounding plate 22c fixed to the lower end of the sliding body 22b. In FIG. 6, the frame body to which the H-type outrigger device 21 is fixed is a vehicle frame 25.
[0020]
When the H-type outrigger device 21 is not in use, the sliding body 22a of the grounding cylinder portion 22 moves upward, the grounding plate 22c is placed on the ground, and is placed in the cylindrical member 24. The sliding member 23 is accommodated. In other words, the H-type outrigger device 21 when not in use is disposed at a position where the H-type outrigger device 21 fits within the vehicle width of the work vehicle and the ground height (distance between the ground and the bottom of the vehicle body) is sufficiently secured. At the time of use (working), after the sliding member 23 extends from the cylindrical member 24 to the side by an appropriate length, the sliding body 22b of the grounding cylinder portion 22 moves downward, and the grounding plate 22c. Is grounded. At this time, since the cylindrical member 24 includes the auxiliary portion 26 having a plurality of fixture insertion holes, the overall length of the H-type outrigger device 21 is further increased in the same manner as the X-type outrigger device 2 shown in FIG. Can be finely adjusted. The auxiliary portion 26 is configured in the same manner as the auxiliary portion 16 of the X-type outrigger device 2.
[0021]
【The invention's effect】
According to the outrigger device of the present invention, the overall length dimension can be adjusted more finely than the conventional outrigger device.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a working vehicle when an outrigger device of the present invention is used.
FIG. 2 is a front view showing a working vehicle when the outrigger device of the present invention is not used;
FIG. 3 is a perspective view partially showing an example of the outrigger device of the present invention.
4 is a plan view showing an auxiliary portion that is a constituent member of the outrigger device shown in FIG. 3; FIG.
5 is a cross-sectional view showing an auxiliary section cut along line AA in FIG. 4;
FIG. 6 is a perspective view showing another example of the outrigger device of the present invention.
FIG. 7 is a perspective view partially showing an example of a conventional outrigger device.
FIG. 8 is a diagram for explaining each stage of adjustment of the overall length when a conventional outrigger device is used.
[Explanation of symbols]
1 Work vehicle (rough terrain crane)
2 X-type outrigger device 3 Vehicle body 4 Cylindrical member 5 Sliding member 6 Revolving body 7 Traveling body 8 Telescopic beam 9 Driver's cab 10 Vehicle frame 11 Tire 12 Support section (cylinder device)
13 Grounding plate 14 Shaft portion 15 Tubular body portion 16 Auxiliary portions 17, 18, 20 Fixture insertion hole 19 Fixture (steel pin)
21 H-type outrigger device 22 Grounding cylinder portion 23 Sliding member 24 Cylindrical member 16a Abutting portion 16b Flat plate portion 22a Cylindrical body 22b Sliding body 23c Grounding plate 101 Outrigger device 102 Cylindrical members 103, 105 Fixture insertion hole 104 Sliding member 106 Fixing tool

Claims (3)

In order to adjust the tubular member attached to the vehicle main body side of the working vehicle and the length of the working vehicle projecting laterally from the vehicle main body, the tubular member is partially inserted into the tubular member. An outrigger device for a working vehicle comprising a rod-shaped sliding member disposed slidably with respect to the cylindrical member,
The cylindrical member is formed to project laterally from an end of the cylindrical main body that is opposite to the side where the main body of the working vehicle and the vehicle main body of the working vehicle are located, and An auxiliary portion having a plurality of fixture insertion holes drilled at appropriate intervals in the direction projecting sideways,
A side for allowing the sliding member to pass through the fixing tool so as to match a desired fixing tool insertion hole selected from a plurality of fixing tool insertion holes formed in the auxiliary portion of the cylindrical member. An outrigger device for a working vehicle, comprising a plurality of fixing tool insertion holes formed at appropriate intervals in a direction projecting to the working vehicle. The outrigger device for a working vehicle according to claim 1, wherein the auxiliary portion of the cylindrical member is formed so as to project in a cantilever shape from an upper edge portion of the cylindrical main body portion. The distance between the fixture insertion hole at one end and the fixture insertion hole at the other end drilled in the auxiliary portion of the cylindrical member is smaller than the distance between the fixture insertion holes drilled in the sliding member. The outrigger device for a working vehicle according to claim 1 or 2, which is configured as described above.

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