JP5956226B2 - Outrigger device - Google Patents

Description

  The present invention relates to an outrigger device. More specifically, the present invention relates to an outrigger device in which a vertical outrigger can be disposed upward during storage.

  As shown in FIG. 7, the loading-type truck crane 101 has a small crane 120 mounted on a vehicle frame 113 between a cab 111 and a loading platform 112 of a general-purpose truck 110. The small crane 120 is provided with an outrigger device 122 on a base 121 fixed on a vehicle frame 113.

  Generally, the outrigger device 122 includes a lateral outrigger 123 fixed to the base 121 and a vertical outrigger 124 whose upper end is fixed to the lateral outrigger 123. At the start of work, the horizontal outrigger 123 is extended and the vertical outrigger 124 is extended to ground the float at the lower end. Thereby, the stability of the loadable truck crane 101 is ensured. At the end of the work, the vertical outrigger 124 is retracted, the horizontal outrigger 123 is retracted, and the outrigger device 122 is stored.

  The conventional outrigger device 122 is attached so that the minimum ground height h of the vertical outrigger 124 during storage is as low as possible without causing an obstacle when the loadable truck crane 101 is traveling. However, since the vehicle frame 113 is equipped with auxiliary equipment 114 such as a battery and an air tank and a fuel tank 115, the vertical outrigger 124 may interfere with the equipment 114 and 115 during storage. Therefore, it is necessary to mount the small crane 120 on the general-purpose truck 110 after moving the equipments 114 and 115 to a position where they do not interfere with the vertical outrigger 124.

  On the other hand, the outrigger device described in Patent Document 1 has a configuration in which the vertical outrigger can be disposed above the vehicle frame when stored, and a small crane can be mounted on a general-purpose truck without transferring equipment. .

  As shown in FIG. 8, the outrigger device 210 described in Patent Document 1 includes a lateral outrigger 211 and a vertical outrigger 212 connected to the lateral outrigger 211. The lateral outrigger 211 includes an outrigger outer box 213 and an outrigger inner box 214 inserted into the outrigger outer box 213. The vertical outrigger 212 is provided inside the outrigger stay 215 and the outrigger stay 215. And an outrigger cylinder 216. A boss 218 protrudes from the base end of the outrigger stay 215 toward the side outrigger 211, and this boss 218 is rotatably supported by a bearing 220 provided on a plate 219 on the side end of the outrigger inner box 214. The rotating mechanism is configured.

  As shown in FIG. 9, the plate 219 is provided with two pin holes 221, 221 symmetrically about the bearing 220, and the pin bracket 223 of the outrigger stay 215 is a pin that fits into the pin hole 221. 222 is provided.

At the start of work, first, the lateral outrigger 211 is extended in the vehicle width direction. At this time, the vertical outrigger 212 is held upward (solid line in FIG. 9). Next, the pin 222 is removed from the pin hole 221, the vertical outrigger 212 is rotated 180 ° downward (two-dot chain line in FIG. 9), and the pin 222 is inserted into the pin hole 221 on the opposite side. Then, the outrigger cylinder 216 is extended to ground the float 217 to ensure the stability of the loadable truck crane.
At the end of the work, first, the outrigger cylinder 216 is contracted, the pin 222 is removed from the pin hole 221, the vertical outrigger 212 is rotated upward 180 °, and the pin 222 is inserted into the opposite pin hole 221 so that the vertical outrigger 212 is moved upward. Hold on. Then, the lateral outrigger 211 is retracted and the outrigger device 210 is stored.

  As shown in FIG. 8, when the outrigger device 210 is stored, the minimum ground height h is higher than the height H of the upper surface of the vehicle frame 201. Therefore, there is no interference between the equipment such as the fuel tank 202 and the vertical outrigger 212, and it is not necessary to move the equipment 202 when mounting a small crane on a general-purpose truck, and it can be easily mounted.

By the way, for the sake of traveling safety, in the retracted state of the outrigger device, the vertical outrigger needs to be pulled inward from the vehicle width of the loadable truck crane.
In this regard, in the conventional outrigger device 210, the vertical outrigger 212 is arranged in front of the front end surface of the horizontal outrigger 211 (left and right in FIG. 8), and the dimensions of the horizontal outrigger 211 are larger than the vehicle width of the load-type truck crane. The vertical outrigger 212 is configured to be shorter and to fit within the vehicle width in the retracted state.
As described above, since the lateral outrigger 211 has a short dimension, the overhang width of the lateral outrigger 211 is narrowed, and accordingly, there is a problem that the stability of the loading type truck crane is lowered when the outrigger device 210 is in a grounded state. is there.

Japanese Patent Laid-Open No. 2002-274783

  In view of the above circumstances, an object of the present invention is to provide an outrigger device having a wide overhang width.

An outrigger device according to a first aspect of the present invention includes an outrigger inner box inserted into an outrigger outer box, connected to a telescopic-shaped lateral outrigger, and a distal end of the outrigger inner box, and perpendicular to the longitudinal direction of the lateral outrigger. a longitudinal outrigger rotatable such plane, in the state where retracted outriggers inner box, and a locking device for limiting the overhang in said outrigger box, the tip top of the outriggers outer box, said outrigger inner box A notch is formed in which the vertical outrigger is inserted when the vertical outrigger is pulled in, and the notch is inserted in the rotational direction of the vertical outrigger inserted above the rotation axis of the vertical outrigger. It has a shape that sandwiches the side part, and the gap with the side part in the rotational direction of the vertical outrigger is formed so narrow that the insertion of the vertical outrigger is not hindered. And said that you are.
The outrigger device according to a second aspect of the present invention is the reaction force support member according to the first aspect, wherein the outer trigger outer box is a member that supports the outrigger inner box, and a gap is formed at a position corresponding to the notch. And a reinforcing member that connects the gaps of the reaction force support members without hindering insertion of the vertical outriggers into the notches is provided .

According to the first aspect of the present invention, the vertical outrigger is inserted into the notch of the outer trigger outer box to retract the inner outrigger box, so that the dimension of the horizontal outrigger can be increased to the vehicle width of the work vehicle. Therefore, the overhanging width of the outrigger device is widened. Since the notch limits the rotation of the vertical outrigger, it can be held so that the vertical outrigger does not rotate during storage. The lock device can hold the outrigger inner box in a retracted state, thereby limiting the rotation of the vertical outrigger. Therefore, it can hold | maintain in the state which stored the outrigger device with the locking device.
According to the second invention, since the reaction force support member is reinforced by the reinforcing plate, it is possible to prevent the reaction force support member from opening a gap due to the reaction force applied when the outrigger device is grounded, and to support the outrigger inner box. it can be.

It is a front view in the state where the outrigger device concerning a 1st embodiment of the present invention was stored. It is the (a) front view partial enlarged view in the state which the outrigger device stored, and (b) longitudinal section. It is the (a) front view partial enlarged view in the state where the outrigger device grounded, (b) longitudinal section. FIG. 4 is a partially enlarged plan view of the outrigger device in a (a) retracted state and (b) a grounded state. It is the side view in the state which (a) stored and (b) grounded of the outrigger apparatus. It is a front view in the state where the outrigger device was grounded. It is a side view of a general loading type truck crane. It is a front view of the conventional outrigger apparatus. It is a side view of the outrigger device.

Next, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, an outrigger device 1 according to an embodiment of the present invention is provided in a small crane loaded on a load-type truck crane. The small crane has a base b, and the outrigger device 1 is fixed to the base b.

The outrigger device 1 includes a pair of lateral outriggers 10 and 10 provided horizontally on the left and right of the base b, and a longitudinal outrigger 20 connected to each lateral outrigger 10. The lateral outrigger 10 includes an outrigger outer box 11 and an outrigger inner box 12. The outrigger inner box 12 is inserted into the outrigger outer box 11 and is configured in a telescopic shape. The vertical outrigger 20 includes a jack cylinder 21 that expands and contracts the vertical outrigger 20, and a float 22 provided at the rod tip of the jack cylinder 21.
In addition, by fixing the bottom face of the outrigger outer box 11 to the vehicle frame f of the general-purpose truck, a small crane is mounted on the general-purpose truck, and a load-type truck crane is configured.

  As shown in FIGS. 2 and 3, a rotating shaft 13 is projected from the distal end surface of the outrigger inner box 12. On the other hand, a bearing 23 is provided at the cap side end of the jack cylinder 21. And the vertical outrigger 20 is rotatably connected with the front-end | tip of the outrigger inner box 12 by the bearing 23 fitting to the rotating shaft 13 rotatably. Therefore, by rotating the vertical outrigger 20 in a plane perpendicular to the longitudinal direction of the horizontal outrigger 10, the vertical outrigger 20 is flipped up (see FIG. 2) and lowered (see FIG. 3). You can change your posture.

  As shown in FIG. 4, a notch 14 is formed on the upper surface of the distal end portion of the outrigger outer box 11. The notch 14 has a shape in which the jack cylinder 21 in a state of being flipped up is inserted when the outrigger inner box 12 is pulled into the outrigger outer box 11 (see FIG. 4A). In this embodiment, since the outer shape of the jack cylinder 21 is cylindrical, the notch 14 has a substantially U shape opened at the tip of the outrigger outer box 11. When the hydraulic piping is provided along the outside of the jack cylinder 21, the notch 14 may be formed in a U shape so that the piping fits in the gap between the jack cylinder 21 and the notch 14. It is good also as a shape.

  Further, the notch 14 has a shape that sandwiches a side portion (upper and lower side portions in FIG. 4) in the rotation direction of the inserted jack cylinder 21. That is, the gap between the side portion of the jack cylinder 21 in the rotational direction and the notch 14 is formed so narrow that the insertion of the jack cylinder 21 is not hindered.

  As shown in FIG. 5, a reaction force support member 15 is provided at the tip of the outrigger outer box 11. The reaction force support member 15 receives a reaction force applied from the outrigger inner box 12 when the outrigger device 1 is grounded, and plays a role of supporting the outrigger inner box 12. The reaction force support member 15 is formed with a gap at a position corresponding to the notch 14 and has a shape that does not prevent the jack cylinder 21 from being inserted into the notch 14.

  As shown in FIGS. 3 and 4, a reinforcing plate 16 is provided on the upper surface of the distal end portion of the outrigger outer box 11. The reinforcing plate 16 is formed with a notch having the same shape as the notch 14. The front end of the reinforcing plate 16 is joined to the reaction force support member 15 and connects the gap of the reaction force support member 15 together. Further, a reinforcing plate 17 is provided around the notch 14 inside the front end portion of the outrigger outer box 11. The reinforcing plate 17 is a substantially U-shaped member having the same shape as the notch 14 in plan view, and both ends thereof are joined to the reaction force support member 15, and the gap of the reaction force support member 15 is connected. A spacer 18 is provided inside the outrigger outer box 11 to secure a space for arranging hydraulic piping and the like, and a reinforcing plate 17 is provided between the upper surface of the outrigger outer box 11 and the spacer 18. Are joined.

As described above, the reinforcing plates 16 and 17 are formed around the notch 14 and have a shape that does not prevent the jack cylinder 21 from being inserted into the notch 14. The reaction force support member 15 is reinforced by the reinforcing plates 16 and 17, and the reaction force applied when the outrigger device 1 is grounded can be prevented from opening a gap between the reaction force support members 15. Therefore, the outrigger inner box 12 can be supported by the reaction force support member 15.
The reinforcing plates 16 and 17 correspond to the reinforcing members described in the claims. As the reinforcing member, a member having another shape may be used as long as it is a member that joins the gap of the reaction force support member 15 without preventing the jack cylinder 21 from being inserted into the notch 14.

As shown in FIG. 2, a tongue piece 31 projects from the upper edge of the reaction force support member 15. Moreover, the rotation claw 32 latched to the tongue piece 31 is attached to the side part of the jack cylinder 21 so that rotation is possible. The tongue device 31 and the rotating claw 32 constitute a lock device 30.
When the outrigger inner box 12 is pulled into the outrigger outer box 11, the rotating claw 32 is locked to the tongue piece 31, and the outrigger inner box 12 is restricted from projecting. Moreover, when the rotation claw 32 is rotated, the restriction is released and the outrigger inner box 12 can be extended.

  As shown in FIG. 3, the bearing 23 is provided with a fixing pin 40. The fixed pin 40 includes a pin 41 and a cylindrical member 42 that is fixed to the bearing 23 and supports the pin 41 so as to be freely slidable. The tip of the pin 42 can protrude and retract from the inner peripheral surface of the bearing 23. A fitting hole 43 is formed in the outer peripheral surface of the rotary shaft 13 and is formed at a position where the tip of the pin 41 is fitted in a state where the vertical outrigger 20 is lowered. Therefore, the posture can be maintained with the vertical outrigger 20 lowered by fitting the tip of the pin 41 into the fitting hole 43. In addition, as long as the posture can be maintained in a state where the vertical outrigger 20 is lowered, a fixing unit having another configuration may be used.

The outrigger device 1 is operated in the following procedure.
In order to ground the outrigger device 1, first, the locking device 30 is released, the outrigger inner box 12 is extracted from the outrigger outer box 11, and the lateral outrigger 10 is extended in the vehicle width direction (left and right direction in FIG. 1). The lateral outrigger 10 is extended manually or by a hydraulic cylinder provided in the lateral outrigger 10. Next, the vertical outrigger 20 is rotated downward to be lowered, and the vertical outrigger 20 is fixed by the fixing pin 40. Then, as shown in FIG. 6, the jack cylinder 21 is extended to ground the float 22.

  On the other hand, to store the outrigger device 1, the jack cylinder 21 is first contracted. Next, the fixing of the fixing pin 40 is released and the vertical outrigger 20 is rotated upward to bring it up. Then, as shown in FIG. 1, the outrigger device 1 is stored by drawing the outrigger inner box 12 into the outrigger outer box 11.

  Here, since the jack cylinder 21 is inserted into the notch 14 of the outrigger outer box 11 and the outrigger inner box 12 is retracted, the vertical outrigger 20 can be retracted inward from the front end surface of the lateral outrigger 10. Therefore, the dimension L that combines the left and right lateral outriggers 10 and 10 and the base b can be increased to the vehicle width of the loadable truck crane. That is, the dimensions of the outrigger outer box 11 and the outrigger inner box 12 can be increased. Therefore, the overhang width of the outrigger device 1 is widened, and the load-type truck crane can be stably supported by that amount.

Further, since the notch 14 restricts the rotation of the vertical outrigger 20, the jack cylinder 21 can be held so as not to rotate during storage. That is, the notch 14 has a function of limiting the rotation of the vertical outrigger 20, and there is no need to provide a mechanism for limiting the rotation of the vertical outrigger 20.
The lock device 30 can hold the outrigger inner box 12 in a retracted state, thereby restricting the rotation of the vertical outrigger 20. Therefore, the outrigger device 1 can be held in the stored state only by the lock device 30.

  Further, in the state where the vertical outrigger 20 is lowered, the bottom surface of the front end portion of the outrigger outer box 11 interferes with the vertical outrigger 20, so that the outrigger inner box 12 cannot be pulled into the outrigger outer box 11. Therefore, it is possible to prevent problems such as the vertical outrigger 20 coming into contact with the equipment of the general-purpose truck due to an operation error or the like.

  Further, when the vertical outrigger 20 is flipped up, the vertical outrigger 20 is disposed above the bottom surface of the horizontal outrigger 10. Therefore, the other equipment of the general-purpose truck does not interfere with the vertical outrigger 20, and when the small crane is mounted on the general-purpose truck, the equipment is not transferred and can be easily mounted.

  Of course, as a configuration to widen the overhang width of the outrigger device, the left and right lateral outriggers are shifted in the front and back direction to increase the size of the lateral outrigger, and the end of the lateral outrigger when the vertical outrigger is flipped up A configuration in which the dimension of the lateral outrigger is lengthened so as to be located on the side of the part is also conceivable. However, in the case of these structures, the front-rear width of the outrigger device 1 becomes long, and it becomes impossible to secure a space for arranging the operation lever of the small crane.

  In this regard, in the outrigger device 1 according to the present embodiment, in the stored state, the vertical outrigger 20 is within the front-rear width of the horizontal outrigger 10, and does not protrude forward or backward from the lateral outrigger 10 (see FIG. 5A). ). Thus, since the outrigger device 1 has a shape with a short front-rear width, it is possible to secure a space for arranging the operation lever of the small crane.

  In addition, although the said embodiment demonstrated to the example the outrigger apparatus with which a small crane is equipped, the outrigger apparatus of this invention is employable as an outrigger apparatus of various work vehicles, such as a crane vehicle and an aerial work vehicle.

DESCRIPTION OF SYMBOLS 1 Outrigger apparatus 10 Lateral outrigger 11 Outrigger outer box 12 Outrigger inner box 13 Rotating shaft 15 Reaction force support member 16 Reinforcement plate 17 Reinforcement plate 20 Vertical outrigger 21 Jack cylinder 22 Float 23 Bearing 30 Locking device 31 Tongue piece 32 Rotating claw

Claims (2)

The outrigger inner box is inserted inside the outrigger outer box, and a lateral outrigger configured in a telescopic shape,
A longitudinal outrigger coupled to the tip of the outrigger inner box and rotatable in a plane perpendicular to the longitudinal direction of the lateral outrigger ;
A locking device that limits overhang of the outrigger inner box in a state where the outrigger inner box is retracted ,
A notch into which the vertical outrigger in a state of being flipped up when the outrigger inner box is pulled in is formed on the top end of the outrigger outer box ,
The notch has a shape sandwiching a side portion in the rotation direction of the vertical outrigger inserted above the rotation axis of the vertical outrigger, and a gap between the side portion in the rotation direction of the vertical outrigger is the An outrigger device characterized by being formed narrow enough to prevent insertion of the vertical outrigger . At the tip of the outrigger outer box is provided a reaction force support member that supports the outrigger inner box and has a gap formed at a position corresponding to the notch,
The outrigger device according to claim 1, wherein a reinforcing member that connects the gap of the reaction force support member without hindering insertion of the vertical outrigger into the notch is provided.

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