JP6996376B2 - Outrigger device - Google Patents

Description

The present invention relates to an outrigger device. More specifically, the present invention relates to an outrigger device mounted on a work platform.

There is a loading crane as a kind of mobile crane. A load-type crane is a general-purpose truck in which a small crane is loaded on the vehicle frame. The small crane is equipped with an outrigger device.

Vehicle equipment such as batteries, air tanks, and fuel tanks are attached to the vehicle frame of general-purpose trucks. When the outrigger device of a small crane is stowed, the outrigger jack may interfere with the vehicle equipment. To avoid this, the vehicle equipment is relocated to a position that does not interfere with the outrigger jack. However, there is a problem that it takes time and effort to relocate the vehicle equipment. The mounting position of the small crane may be changed to avoid interference between the outrigger jack and the vehicle equipment. However, if the mounting position of the small crane is shifted to the rear, there is a problem that the loading space becomes narrow.

As an outrigger structure for solving this problem, a long jack and a rotary retractable jack (for example, Patent Document 1) are known. With these outrigger structures, the outrigger jacks are stored above the vehicle equipment, so there is no need to relocate the vehicle equipment or change the mounting position of the small crane.

Japanese Unexamined Patent Publication No. 2002-274738

However, long jacks and rotary retractable jacks have more parts, are heavier, and are more expensive to manufacture than standard jacks. Further, there is a problem that the procedure for the worker to extend and store the outrigger device increases, and the work takes time.

In view of the above circumstances, it is an object of the present invention to provide an outrigger device capable of avoiding interference with vehicle equipment with a simpler configuration.

The outrigger device of the first invention is provided with a first outrigger jack, a first outrigger inner box provided with the first outrigger jack at the tip, a second outrigger jack, and a second outrigger jack at the tip. A second outrigger inner box, a tubular first outrigger outer box having a first opening end and a second opening end, and a tubular first outrigger having a third opening end and a fourth opening end. The first outrigger outer box and the second outrigger outer box are arranged side by side so that their central axes are parallel to each other in the horizontal plane, and the first outrigger outer box is provided. The portion and the third outrigger end are arranged at the same positions in the axial direction of the first outrigger outer box and the second outrigger outer box, and the second outrigger end and the fourth outrigger end are arranged. Are arranged at the same positions in the axial direction of the first outrigger outer box and the second outrigger outer box, and the first outrigger inner box is either the first open end portion or the third open end portion. From one side, the first outrigger outer box and the second outrigger outer box are selectively inserted, and the second outrigger inner box is either the second open end portion or the fourth open end portion. From one side, the first outrigger outer box and the second outrigger outer box are inserted into the one in which the first outrigger inner box is not inserted.
In the first invention, the outrigger device of the second invention has a top plate of the first open end, the second open end, the third open end, and the fourth open end, respectively, from the bottom plate. Also protrudes outward, the protruding width thereof is the same as or longer than the width of the first outrigger jack or the second outrigger jack.
In the first or second invention, the outrigger device of the third invention includes the first reinforcing frame provided on the outer periphery of the first opening end and the third opening, the second opening and the second. 4 It is characterized by including a second reinforcing frame provided on the outer periphery of the opening end portion.
In the first, second or third invention, the first outrigger outer box and the second outrigger outer box are connected to each other via a partition plate constituting their common side plate. It is characterized by being.
The outrigger device of the fifth invention is characterized in that, in the fourth invention, reinforcing plates are provided at both ends of the partition wall plate.
In the fifth invention, the outrigger device of the sixth invention is attached to a portion of the first outrigger inner box facing the partition plate, and the thickness of the reinforcing plate is between the first outrigger inner box and the partition plate. The first spacer that secures a larger gap and the portion of the second outrigger inner box that faces the partition plate are attached, and the thickness of the reinforcing plate between the second outrigger inner box and the partition plate is increased. It is characterized by including a second spacer that secures a large gap.
The out trigger device of the seventh invention is the slide of the first out trigger inner box with respect to the first out trigger outer box or the second out trigger outer box in the first, second, third, fourth, fifth or sixth invention. A first locking device for stopping the sliding of the second outer box with respect to the first outer box or the second outer box, and the first opening end portion and the second locking device for stopping the sliding of the second outer box with respect to the second outer box. Each of the third opening ends has a first locking device mounting portion to which the first locking device is mounted, and both the second opening end portion and the fourth opening end portion are the second locking device. It is characterized by having a second lock device mounting portion to which the is mounted.
In the first, second, third, fourth, fifth, sixth or seventh invention, the out trigger device of the eighth invention is the first slide in which the piston rod or the cylinder body is connected to the first out trigger inner box. A cylinder, a first connecting member to which the cylinder body of the first slide cylinder or the piston rod is connected, a second slide cylinder to which the piston rod or the cylinder body is connected to the second outrigger inner box, and the first. A second connecting member to which the cylinder body of the two slide cylinders or the piston rod is connected is provided, and the first connecting member is attached to both the second opening end portion and the fourth opening end portion. It has one connecting member mounting portion, and both the first opening end portion and the third opening end portion have a second connecting member mounting portion to which the second connecting member is mounted.
In the first, second, third, fourth, fifth, sixth, seventh or eighth invention, the out trigger device of the ninth invention is any one of the second open end and the fourth open end. Selectively attached to one of the first cover that closes the opening of the second opening end or the fourth opening end, and either the first opening end or the third opening end. It is characterized by comprising a second cover that is attached to the object and closes the opening of the first opening end or the third opening end.
The out trigger device of the tenth invention is the second open end portion and the fourth open end portion in the first, second, third, fourth, fifth, sixth, seventh, eighth or ninth invention. A first piping hole for passing a pipe for supplying hydraulic oil to the first outer trigger jack is formed in each of the above, and the second opening end is formed in both the first opening end and the third opening end. It is characterized in that a second piping hole through which a piping for supplying hydraulic oil is passed to the out-trigger jack is formed.

According to the first invention, the front-rear position of the outrigger jack can be changed by selecting the outrigger outer box into which the outrigger inner box is inserted, and the interference between the outrigger jack and the vehicle equipment can be avoided.
According to the second invention, regardless of which outrigger outer box the outrigger inner box is inserted into, the outrigger jack can be pulled inward from the tip of the outrigger outer box.
According to the third invention, no matter which outrigger outer box is inserted into the outrigger inner box, the strength required for the opening end can be maintained against the force acting from the outrigger inner box.
According to the fourth invention, since the side plates of the first outrigger outer box and the second outrigger outer box are formed of a common partition wall plate, the weight of the outrigger device can be reduced.
According to the fifth invention, since the partition plate is reinforced, the strength required for the partition plate can be maintained against the force acting from the outrigger inner box.
According to the sixth invention, since a gap is secured between the outrigger inner box and the partition wall plate, it is possible to prevent the base end portion of the outrigger inner box from being caught by the reinforcing plate when the outrigger inner box is pulled in.
According to the seventh invention, the locking device can be attached to the outrigger outer box to which the outrigger inner box is inserted.
According to the eighth invention, the connecting member can be attached to the outrigger outer box to which the outrigger inner box is inserted.
According to the ninth invention, it is safe for the worker because the outrigger outer box opening to which the outrigger inner box is not inserted can be closed.
According to the tenth invention, the hydraulic oil can be drawn into the inside of the outrigger outer box in which the outrigger inner box is inserted.

It is a front view of the outrigger apparatus which concerns on one Embodiment of this invention. It is a top view of the outrigger device of FIG. It is a right side view of the outrigger device of FIG. It is a top view when the insertion destination of the outrigger inner box is changed in the outrigger apparatus of FIG. It is an enlarged front view near the first opening end portion. FIG. 1 is an end view taken along the line VI-VI in FIG. However, the outrigger inner box is omitted. FIG. 2 is a cross-sectional view taken along the line VII-VII in FIG. However, the outrigger inner box is omitted. It is a front view of the 1st outrigger inner box. It is a rear view of the first outrigger inner box. FIG. 3 is a partially broken plan view of the outrigger device of FIG. 1. It is a bottom view of the outrigger device of FIG. It is a partially broken enlarged front view in the vicinity of the first opening end portion. It is a partially broken enlarged front view in the vicinity of the second opening end. It is a side view of a loading type crane.

Next, an embodiment of the present invention will be described with reference to the drawings.
The outrigger device according to the embodiment of the present invention is mounted on a work vehicle. The work vehicle is not particularly limited as long as it requires an outrigger device, and examples thereof include mobile cranes, aerial work platforms, and road-rail vehicles. Examples of mobile cranes include all-terrain cranes, rough terrain cranes, truck cranes, and loaded cranes. Hereinafter, the case of a loaded crane will be described as an example.

(Loading crane)
As shown in FIG. 14, the load-type crane CR is a load-type crane CR in which a small crane 120 is loaded on a vehicle frame 113 between a driver's cab 111 and a loading platform 112 of a general-purpose truck 110.

The small crane 120 includes a base 121 fixed on the vehicle frame 113, a post 122 rotatably provided with respect to the base 121, and a boom 123 undulating at the upper end of the post 122. There is.

The post 122 has a built-in winch. A wire rope extended from this winch is guided to the tip of the boom 123 and hung around the hook 124 via a pulley to suspend the hook 124 from the tip of the boom 123.

By combining the expansion / contraction, undulation, and turning of the boom 123 with the hoisting and unwinding of the hook 124, the suspended load suspended by the hook 124 can be moved in the three-dimensional space.

The small crane 120 is hydraulically driven by a hydraulic circuit. Lever groups 125 for operating this hydraulic circuit are provided on both the left and right sides of the base 121. The worker can operate the small crane 120 by using the lever group 125.

A control device 126 that electrically controls the hydraulic circuit is provided near one of the lever groups 125. The control device 126 is capable of bidirectional wireless communication or wired communication with the remote control terminal 127. The remote control terminal 127 is equipped with input units such as various switches and levers, and a display such as a liquid crystal panel. When the worker operates the input unit of the remote control terminal 127, the remote control terminal 127 issues an operation signal to the control device 126. The control device 126 controls the hydraulic circuit based on the operation signal to operate the small crane 120. In this way, the worker can remotely control the small crane 120 by using the remote control terminal 127.

The small crane 120 includes an outrigger device 1. The outrigger device 1 is also hydraulically driven by the hydraulic circuit. By projecting the outrigger device 1 before the start of the crane work, the stability of the loaded crane CR during the crane work is ensured. When moving the loading crane CR, the outrigger device 1 is stored.

A vehicle device 114 such as a battery, an air tank, and a fuel tank is attached to the vehicle frame 113 of the general-purpose truck 110. When the outrigger device 1 is stored, it is required that the jack cylinder does not interfere with the vehicle equipment 114.

(Outrigger device)
Next, the outrigger device 1 of the present embodiment will be described.
(1) Basic Configuration As shown in FIGS. 1 and 2, the outrigger device 1 includes a first outrigger jack 10A and a first outrigger inner box 20A having a first outrigger jack 10A provided at a tip portion thereof. Further, the outrigger device 1 includes a second outrigger jack 10B and a second outrigger inner box 20B provided with a second outrigger jack 10B at the tip end portion.

The first outrigger jack 10A is composed of a hydraulic cylinder. The first outrigger jack 10A is of a type called a "standard jack". The "standard jack" is a configuration in which the entire first outrigger jack 10A is arranged below the upper surface of the top plate 21 of the first outrigger inner box 20A regardless of whether the outrigger device 1 is stored or overhanging. Means one.

The first outrigger inner box 20A is a beam member having a substantially rectangular cross section. Of both ends of the first outrigger inner box 20A, the one provided with the first outrigger jack 10A is referred to as a tip portion, and the other is referred to as a base end portion.

The second outrigger jack 10B is basically a member having the same configuration as the first outrigger jack 10A. Further, the second outrigger inner box 20B is basically a member having the same configuration as the first outrigger inner box 20A. That is, the second outrigger jack 10B is composed of a hydraulic cylinder and is of a type called a "standard jack". Further, the second outrigger inner box 20B is a beam member having a substantially rectangular cross section.

The first member composed of the first outrigger jack 10A and the first outrigger inner box 20A and the second member composed of the second outrigger jack 10B and the second outrigger inner box 20B are basically members having the same configuration. , It is not necessary to use them separately. "1st" and "2nd" are numbers assigned for convenience of explanation. The first member and the second member may be used interchangeably with each other.

The outrigger device 1 includes a first outrigger outer box 30A and a second outrigger outer box 30B. The first outrigger outer box 30A is a tubular member having a substantially rectangular cross section, and both ends are open. Hereinafter, for convenience of explanation, one end of the first outrigger outer box 30A is referred to as a first opening end 31, and the other end is referred to as a second opening end 32.

The second outrigger outer box 30B is a tubular member having a substantially rectangular cross section, and both ends are open. Hereinafter, for convenience of explanation, one end of the second outrigger outer box 30B is referred to as a third opening end 33, and the other end is referred to as a fourth opening end 34.

The term "open end" includes the openings of the outrigger outer boxes 30A and 30B, and means a portion of a predetermined region from the open ends of the outrigger outer boxes 30A and 30B toward the center.

The first outrigger outer box 30A and the second outrigger outer box 30B are arranged substantially horizontally, respectively. Further, the first outrigger outer box 30A and the second outrigger outer box 30B are arranged side by side so that their central axes are parallel to each other in the horizontal plane. When the outrigger device 1 is mounted on the work vehicle, the first outrigger outer box 30A and the second outrigger outer box 30B are arranged side by side with respect to the work vehicle. The first outrigger outer box 30A is arranged on the front side, and the second outrigger outer box 30B is arranged on the rear side.

The first outrigger outer box 30A and the second outrigger outer box 30B have the same length, and are arranged so that both ends are aligned. The first opening end portion 31 and the third opening end portion 33 are arranged at the same positions in the axial direction (left-right direction in FIG. 2) of the first outrigger outer box 30A and the second outrigger outer box 30B. Further, the second opening end portion 32 and the fourth opening end portion 34 are arranged at the same positions in the axial direction (left-right direction in FIG. 2) of the first outrigger outer box 30A and the second outrigger outer box 30B. When the outrigger device 1 is mounted on the work vehicle, the first opening end portion 31 and the third opening end portion 33 are arranged on the left side of the work vehicle, and the second opening end portion 32 and the fourth opening end portion 34 are It is placed on the right side of the work platform.

A base 121 of the small crane 120 is provided at the center of the first outrigger outer box 30A and the second outrigger outer box 30B. The base 121 is eccentrically provided on the side of the second outrigger outer box 30B.

(2) Bulkhead Plate As shown in FIG. 6, the first outrigger outer box 30A and the second outrigger outer box 30B are formed of a first plate material 41, a second plate material 42, and a partition wall plate 43. The first plate material 41 is a plate material bent so as to have a C-shaped cross section. The first plate material 41 constitutes a top plate 35, a bottom plate 36, and a side plate 37 on the front side (left side in FIG. 6) of the first outrigger outer box 30A. The second plate material 42 is a plate material bent so that the cross section has an inverted C shape. The second plate member 42 constitutes the top plate 35, the bottom plate 36, and the rear side (right side in FIG. 6) side plate 37 of the second outrigger outer box 30B.

The first plate material 41 and the second plate material 42 are arranged so that their openings face each other and the partition wall plate 43 is sandwiched between them. The upper and lower edges of the first plate material 41 and the upper and lower edges of the partition plate 43 are welded to each other, and the upper and lower edges of the second plate material 42 and the upper and lower edges of the partition plate 43 are welded to each other. As a result, the first plate material 41, the second plate material 42, and the partition wall plate 43 are integrated to form the first outrigger outer box 30A and the second outrigger outer box 30B.

The partition plate 43 constitutes a side plate on the rear side (right side in FIG. 6) of the first outrigger outer box 30A, and also constitutes a side plate on the front side (left side in FIG. 6) of the second outrigger outer box 30B. In other words, the first outrigger outer box 30A and the second outrigger outer box 30B are connected via a partition plate 43 constituting their common side plate.

As described above, since the side plates of the first outrigger outer box 30A and the second outrigger outer box 30B are composed of the common partition plate 43, separate members are provided for each of the first outrigger outer box 30A and the second outrigger outer box 30B. The number of plate materials can be reduced as compared with the case of providing the side plate of. As a result, the outrigger device 1 can be reduced in weight. Moreover, since the first outrigger outer box 30A and the second outrigger outer box 30B are integrated, their rigidity can be increased.

(3) Assembly of Outrigger Device As shown in FIGS. 1 and 2, the shapes of the first outrigger outer box 30A and the second outrigger outer box 30B are substantially symmetrical. Further, the first outrigger outer box 30A and the second outrigger outer box 30B have substantially symmetrical shapes with their contact surfaces as boundaries. Then, the outrigger inner boxes 20A and 20B can be inserted from any of the open end portions 31, 32, 33 and 34.

Specifically, the first outrigger inner box 20A can be inserted into either the first opening end portion 31 or the third opening end portion 33. That is, the first outrigger inner box 20A can be inserted into either the first outrigger outer box 30A or the second outrigger outer box 30B.

When assembling the outrigger device 1, the first outrigger inner box 20A is a first outrigger outer box 30A and a second outrigger outer box 30B from either the first opening end portion 31 or the third opening end portion 33. It is selectively inserted in either one. That is, as shown in FIG. 2, the first outrigger inner box 20A may be inserted into the first outrigger outer box 30A from the first opening end portion 31. As shown in FIG. 4, the first outrigger inner box 20A may be inserted into the second outrigger outer box 30B from the third opening end 33.

Similarly, the second outrigger inner box 20B can be inserted into either the second open end 32 or the fourth open end 34. That is, the second outrigger inner box 20B can be inserted into either the first outrigger outer box 30A or the second outrigger outer box 30B.

When assembling the outrigger device 1, the second outrigger inner box 20B is a first outrigger outer box 30A and a second outrigger outer box 30B from either the second opening end portion 32 or the fourth opening end portion 34. It is selectively inserted in either one. However, the first outrigger inner box 20A and the second outrigger inner box 20B are inserted into different outrigger outer boxes 30A and 30B. That is, the second outrigger inner box 20B is inserted into the first outrigger outer box 30A and the second outrigger outer box 30B to which the first outrigger inner box 20A is not inserted.

As shown in FIG. 2, when the first outrigger inner box 20A is inserted into the first outrigger outer box 30A, the second outrigger inner box 20B is inserted into the second outrigger outer box 30B from the fourth opening end portion 34. .. As shown in FIG. 4, when the first outrigger inner box 20A is inserted into the second outrigger outer box 30B, the second outrigger inner box 20B is inserted into the first outrigger outer box 30A from the second opening end 32. ..

As described above, the front and rear positions of the outrigger jacks 10A and 10B can be changed by selecting the outrigger outer boxes 30A and 30B into which the outrigger inner boxes 20A and 20B are inserted. For example, as shown in FIG. 2, if the first outrigger inner box 20A is inserted into the first outrigger outer box 30A, the first outrigger jack 10A is arranged closer to the front of the work vehicle. Then, a space for installing the vehicle equipment 114 can be secured behind the first outrigger jack 10A. In this way, interference between the outrigger jacks 10A and 10B and the vehicle equipment 114 can be avoided.

Since the interference between the outrigger jacks 10A and 10B and the vehicle equipment 114 can be avoided, the relocation of the vehicle equipment 114 becomes unnecessary, and the labor of the relocation work can be saved. Further, it is not necessary to shift the mounting position of the small crane 120 to the rear, and a loading space can be secured.

Moreover, the outrigger jacks 10A and 10B are "standard jacks" and have a simpler configuration than long jacks and rotary retractable jacks. Therefore, the number of parts can be reduced, the weight can be reduced, and the manufacturing cost can be reduced. Further, the procedure for the worker to extend and store the outrigger device 1 is simple, and the work does not take time.

(4) Overhang and storage In FIG. 1, the solid line shows the overhanging state of the outrigger device 1. The overhanging state of the outrigger device 1 means that the outrigger inner boxes 20A and 20B are pulled out from the outrigger outer boxes 30A and 30B, the outrigger jacks 10A and 10B are extended, and the float 11 provided at the tip of the piston rod comes into contact with the ground G. It is in a state of being made to. Hereinafter, bringing the float 11 into contact with the ground G is simply referred to as “grounding”. When the outrigger jacks 10A and 10B are grounded, a part of the weight of the loaded crane CR is applied to the outrigger device 1, thereby supporting the loaded crane CR.

In FIG. 1, the two-dot chain line shows the state in which the outrigger device 1 is stored. The state in which the outrigger device 1 is stored is a state in which the outrigger jacks 10A and 10B are fully contracted and the outrigger inner boxes 20A and 20B are pulled into the outrigger outer boxes 30A and 30B.

FIG. 5 shows an enlarged front view of the first opening end portion 31. The top plate 35 constituting the first opening end portion 31 projects outward from the bottom plate 36 (on the end side of the first outrigger outer box 30A). The protruding width of the top plate 35 with respect to the bottom plate 36 is set to be the same as or longer than the width of the first outrigger jack 10A. The edge of the side plate 37 is inclined so as to connect the edge of the top plate 35 and the edge of the bottom plate 36. The first opening end portion 31 is opened diagonally downward.

With such a configuration, when the first outrigger inner box 20A is pulled in, the head of the first outrigger jack 10A can be inserted into the inside of the first opening end portion 31. Therefore, when the outrigger device 1 is retracted, the first outrigger jack 10A can be pulled inward from the tip of the first outrigger outer box 30A.

The second opening end portion 32, the third opening end portion 33, and the fourth opening end portion 34 have basically the same configuration as the first opening end portion 31. That is, in each of these open end portions 32, 33, and 34, the top plate 35 projects outward from the bottom plate 36. The protruding width of the top plate 35 is set to be the same as or longer than the width of the first outrigger jack 10A or the second outrigger jack 10B.

Therefore, even if the outrigger inner boxes 20A and 20B are inserted into any of the outrigger outer boxes 30A and 30B, the outrigger jacks 10A and 10B can be pulled inward from the tips of the outrigger outer boxes 30A and 30B.

When the outrigger device 1 is retracted, the outrigger jacks 10A and 10B are pulled inward from the tips of the outrigger outer boxes 30A and 30B. Therefore, in the retracted state, the outrigger jacks 10A and 10B do not protrude from the width of the work vehicle and do not interfere with the running of the loaded crane CR.

Further, the outrigger outer boxes 30A and 30B are longer because the top plate 35 projects outward. Therefore, the overhang width of the outrigger jacks 10A and 10B can be increased, and the lateral stability performance can be improved.

(5) Reinforcing frame When the outrigger jacks 10A and 10B are grounded, a reaction force to the ground is applied to the outrigger jacks 10A and 10B. A moment is generated in the outrigger inner boxes 20A and 20B due to the reaction force to the ground. Then, a force acts from the top plate 21 of the outrigger inner boxes 20A and 20B to the opening ends 31, 32, 33 and 34.

Reinforcing frames 50A and 50B are provided at the opening ends 31, 32, 33 and 34 in order to secure the strength against the force acting from the outrigger inner boxes 20A and 20B. For example, a first reinforcing frame 50A is provided on the outer periphery of the first opening end portion 31.

As shown in FIG. 3, the first reinforcing frame 50A is provided on the outer periphery of the first opening end portion 31 and the third opening end portion 33. In other words, a flange-shaped first reinforcing frame 50A is provided so as to collectively surround the outer periphery of the two open end portions 31 and 33.

Specifically, the first reinforcing frame 50A includes an upper frame 51, a lower frame 52, and a pair of horizontal frames 53 and 53. The upper frame 51 is bridged between the top plate 35 of the first opening end portion 31 and the top plate 35 of the third opening end portion 33. The lower frame 52 is bridged between the bottom plate 36 of the first opening end portion 31 and the bottom plate 36 of the third opening end portion 33. One horizontal frame 53 is provided on the side plate 37 of the first opening end portion 31 (see FIG. 5). The other horizontal frame 53 is provided on the side plate 37 of the third opening end 33.

On the other hand, as shown in FIG. 2, a second reinforcing frame 50B is provided on the outer periphery of the second opening end portion 32 and the fourth opening end portion 34. The second reinforcing frame 50B has basically the same configuration as the first reinforcing frame 50A, and includes an upper frame 51, a lower frame 52, and a pair of horizontal frames 53 and 53.

As described above, the reinforcing frames 50A and 50B are provided on each of the open end portions 31, 32, 33, 34. Therefore, even if the outrigger inner boxes 20A and 20B are inserted into any of the outrigger outer boxes 30A and 30B, the strength required for the opening ends 31, 32, 33 and 34 against the force acting from the outrigger inner boxes 20A and 20B. Can be maintained.

(6) Reinforcing plate As shown in FIG. 7, reinforcing plates 44 are provided at both ends of the partition plate 43. The reinforcing plate 44 is attached to the surface of the partition plate 43 in surface contact with each other. The reinforcing plate 44 is provided on both the first outrigger outer box 30A side and the second outrigger outer box 30B side of the partition plate 43. That is, a total of four reinforcing plates 44 are provided on both ends of the partition plate 43.

When the outrigger jacks 10A and 10B are grounded, the force from the outrigger inner boxes 20A and 20B also acts on the partition plate 43. Since the partition plate 43 is reinforced by the reinforcing plate 44, the strength required for the partition plate 43 can be maintained against the forces acting from the outrigger inner boxes 20A and 20B.

Moreover, a total of four reinforcing plates 44 are provided on both ends of the partition plate 43. Therefore, even if the outrigger inner boxes 20A and 20B are inserted into any of the outrigger outer boxes 30A and 30B, the strength required for the partition plate 43 can be maintained against the force acting from the outrigger inner boxes 20A and 20B.

(7) Spacer FIG. 8 shows a front view of the first outrigger inner box 20A. FIG. 9 shows a rear view of the first outrigger inner box 20A. The first outrigger inner box 20A is composed of a top plate 21, a bottom plate 22, and a pair of front and rear side plates 23, 23.

At the base end of the first outrigger inner box 20A, the first spacer 60A is attached to the side plate 23 on the back side. The first spacer 60A includes a substrate 61 and a cylindrical portion 62 erected on the substrate 61.

A spacer mounting portion 63 for mounting the first spacer 60A is formed on the side plate 23. The spacer mounting portion 63 includes an insertion hole 63a through which the columnar portion 62 is passed, and a bolt hole 63b for bolts for fixing the substrate 61.

The first spacer 60A is attached to the spacer mounting portion 63 by the following procedure. The cylindrical portion 62 is passed through the insertion hole 63a from the inside of the first outrigger inner box 20A. The substrate 61 abuts on the inner surface of the side plate 23. The bolts that have passed through the substrate 61 are fastened to the bolt holes 63b. As a result, the first spacer 60A is fixed to the side plate 23.

The spacer mounting portion 63 is formed on both the front side plate 23 (see FIG. 8) and the back side plate 23 (see FIG. 9). Therefore, the first spacer 60A can be attached to both the front side plate 23 and the back side plate 23.

The first spacer 60A is attached to a portion of the first outrigger inner box 20A facing the partition plate 43. That is, when the first outrigger inner box 20A is inserted into the front first outrigger outer box 30A, the first spacer 60A is attached to the side plate 23 on the back side of the first outrigger inner box 20A. Conversely, when the first outrigger inner box 20A is inserted into the rear second outrigger outer box 30B, the first spacer 60A is attached to the side plate 23 on the front side of the first outrigger inner box 20A.

Similarly, a second spacer 60B is attached to the side plate 23 of the second outrigger inner box 20B (see FIG. 10). The second spacer 60B is basically a member having the same configuration as the first spacer 60A. Spacer mounting portions 63 are formed on both the front and rear side plates 23 and 23 of the second outrigger inner box 20B.

The second spacer 60B is attached to a portion of the second outrigger inner box 20B facing the partition plate 43. That is, when the second outrigger inner box 20B is inserted into the front first outrigger outer box 30A, the second spacer 60B is attached to the side plate 23 on the back side of the second outrigger inner box 20B. Conversely, when the second outrigger inner box 20B is inserted into the rear second outrigger outer box 30B, the second spacer 60B is attached to the side plate 23 on the front side of the second outrigger inner box 20B.

As shown in FIG. 10, the first spacer 60A projects from the side plate 23 of the first outrigger inner box 20A toward the partition plate 43. When the first spacer 60A comes into contact with the partition plate 43, a gap is secured between the first outrigger inner box 20A and the partition plate 43.

Similarly, the second spacer 60B projects from the side plate 23 of the second outrigger inner box 20B toward the partition plate 43. When the second spacer 60B comes into contact with the partition plate 43, a gap is secured between the second outrigger inner box 20B and the partition plate 43.

As described above, reinforcing plates 44 are provided at both ends of the partition plate 43. A step corresponding to the thickness of the reinforcing plate 44 is formed on the surface of the partition plate 43. If the base end portions of the outrigger inner boxes 20A and 20B are displaced in the front-rear direction when the outrigger inner boxes 20A and 20B are pulled in, the base end portions may be caught by the ends of the reinforcing plate 44.

On the other hand, if the spacers 60A and 60B are attached, a gap larger than the thickness of the reinforcing plate 44 can be secured between the outrigger inner boxes 20A and 20B and the partition plate 43. Therefore, when the outrigger inner boxes 20A and 20B are pulled in, it is possible to prevent the base end portions of the outrigger inner boxes 20A and 20B from being caught by the reinforcing plate 44.

(8) Locking device As shown in FIG. 1, the outrigger device 1 includes locking devices 70A and 70B for stopping the slide of the outrigger inner boxes 20A and 20B with respect to the outrigger outer boxes 30A and 30B.

As shown in FIG. 12, the first lock device 70A has a lock pin 71. The lock pin 71 can be projected and retracted with respect to the substrate 72. Further, the first lock device 70A has a lever 73 for operating the protrusion and pull-in of the lock pin 71.

The first lock device 70A is attached to the bottom plate 36 of the first outrigger outer box 30A. The lock pin 71 is passed through an insertion hole 74a formed in the bottom plate 36, and its tip portion is arranged inside the first outrigger outer box 30A.

A lock hole 24 is formed in the bottom plate 22 of the first outrigger inner box 20A. When the lock pin 71 is projected and the lock pin 71 is inserted into the lock hole 24, the first outrigger inner box 20A is fixed so as not to slide with respect to the first outrigger outer box 30A. When the lock pin 71 is pulled in, the lock pin 71 is pulled out from the lock hole 24, and the first outrigger inner box 20A can slide with respect to the first outrigger outer box 30A.

Normally, a plurality of lock holes 24 are formed in the bottom plate 22 of the first outrigger inner box 20A. For example, the lock hole 24 is formed at the tip end portion, the base end portion, and an intermediate position between them in the first outrigger inner box 20A. When the first outrigger inner box 20A is pulled into the inside of the first outrigger outer box 30A as much as possible, the state can be maintained by inserting the lock pin 71 into the lock hole 24 at the tip end. When the first outrigger inner box 20A is extended to the maximum, the state can be maintained by inserting the lock pin 71 into the lock hole 24 at the base end portion. When the first outrigger inner box 20A is extended halfway, the state can be maintained by inserting the lock pin 71 into the lock hole 24 at the intermediate position. By providing the plurality of lock holes 24 in this way, the first outrigger inner box 20A can be maintained in an overhanging state with various overhanging widths.

As shown in FIG. 11, the second lock device 70B is basically a member having the same configuration as the first lock device 70A or a mirror image symmetric configuration. The second lock device 70B is attached to the bottom plate 36 of the second outrigger outer box 30B. A lock hole 24 is also formed in the bottom plate 22 of the second outrigger inner box 20B. When the lock pin 71 of the second lock device 70B is projected and inserted into the lock hole 24 of the second outrigger inner box 20B, the second outrigger inner box 20B is fixed so as not to slide with respect to the second outrigger outer box 30B. When the lock pin 71 is pulled in, the second outrigger inner box 20B can slide with respect to the second outrigger outer box 30B.

A first lock device mounting portion 74A for mounting the first lock device 70A is formed on the bottom plates 36 of the outrigger outer boxes 30A and 30B. The first lock device mounting portion 74A includes an insertion hole 74a through which the lock pin 71 of the first lock device 70A is passed, and a pedestal 74b having a bolt hole for bolts for fixing the substrate 72.

The first lock device mounting portion 74A is formed on both the first opening end portion 31 and the third opening end portion 33. Therefore, the first lock device 70A can be attached to both the first outrigger outer box 30A and the second outrigger outer box 30B.

The first lock device 70A is attached to the outrigger outer boxes 30A and 30B to which the first outrigger inner box 20A is inserted. That is, when the first outrigger inner box 20A is inserted into the first outrigger outer box 30A, the first lock device 70A is attached to the first outrigger outer box 30A. Then, the slide of the first outrigger inner box 20A with respect to the first outrigger outer box 30A can be stopped by the first lock device 70A.

Conversely, when the first outrigger inner box 20A is inserted into the second outrigger outer box 30B, the first lock device 70A is attached to the second outrigger outer box 30B. Then, the slide of the first outrigger inner box 20A with respect to the second outrigger outer box 30B can be stopped by the first lock device 70A.

Further, a second lock device mounting portion 74B for mounting the second lock device 70B is formed on the bottom plates 36 of the outrigger outer boxes 30A and 30B. The second lock device mounting portion 74B includes an insertion hole 74a through which the lock pin 71 of the second lock device 70B is passed, and a pedestal 74b having a bolt hole for bolts for fixing the substrate 72.

The second lock device mounting portion 74B is formed on both the second opening end portion 32 and the fourth opening end portion 34. Therefore, the second lock device 70B can be attached to both the first outrigger outer box 30A and the second outrigger outer box 30B.

The second lock device 70B is attached to the outrigger outer boxes 30A and 30B to which the second outrigger inner box 20B is inserted. That is, when the second outrigger inner box 20B is inserted into the first outrigger outer box 30A, the second lock device 70B is attached to the first outrigger outer box 30A. Then, the second lock device 70B can stop the slide of the second outrigger inner box 20B with respect to the first outrigger outer box 30A.

Conversely, when the second outrigger inner box 20B is inserted into the second outrigger outer box 30B, the second lock device 70B is attached to the second outrigger outer box 30B. Then, the second lock device 70B can stop the slide of the second outrigger inner box 20B with respect to the second outrigger outer box 30B.

It is preferable that the lock devices 70A and 70B have both levers 73 and 73 oriented in the same direction. Specifically, it is preferable to point the levers 73 and 73 in the direction in which the lever group 125 is installed. For example, when the lever group 125 is installed on the rear side, it is preferable to turn the lever 73 toward the rear side.

Then, when the worker operates the lever group 125 to extend and retract the outrigger device 1, the lock devices 70A and 70B can be operated at the same standing position. Therefore, the outrigger device 1 can be easily extended and stored.

(9) Connecting member As shown in FIG. 13, the first outrigger inner box 20A has a first slide cylinder 25A. The first slide cylinder 25A is housed inside the first outrigger inner box 20A. The first slide cylinder 25A is a hydraulic cylinder and is used for extending and retracting the first outrigger inner box 20A.

The tip of the piston rod of the first slide cylinder 25A is connected to the first outrigger inner box 20A (for example, side plates 23, 23). A trunnion 26 is provided at the cap-side end of the cylinder body constituting the first slide cylinder 25A. The trunnion 26 is exposed to the outside from the base end portion of the first outrigger inner box 20A. The trunnion 26 is supported by the first connecting member 80A. That is, the cylinder body of the first slide cylinder 25A is connected to the first connecting member 80A.

The first connecting member 80A is attached to the first outrigger outer box 30A. Therefore, by expanding and contracting the first slide cylinder 25A, the first outrigger inner box 20A can be slid with respect to the first outrigger outer box 30A. As a result, the first outrigger inner box 20A is extended and retracted.

The cylinder body of the first slide cylinder 25A may be connected to the first outrigger inner box 20A. In this case, a trunnion 26 is provided at the tip of the piston rod of the first slide cylinder 25A and is connected to the first connecting member 80A.

The first connecting member 80A has a support portion 81 that supports the trunnion 26, and a frame portion 82 to which the support portion 81 is fixed. The frame portion 82 is L-shaped as a whole, and is composed of a horizontal portion 82a and a vertical portion 82b. The tip of the horizontal portion 82a is hook-shaped. A fastening plate 83 is provided at the upper end of the vertical portion 82b.

A notch 84a is formed at the end edge of the bottom plate 36 of the first outrigger outer box 30A. A groove 84b is formed in the upper part of the lower frame 52 constituting the reinforcing frames 50A and 50B. Bolt holes 84c are formed on the inner surface of the upper frame 51 constituting the reinforcing frames 50A and 50B. These notches 84a, grooves 84b, and bolt holes 84c constitute a first connecting member mounting portion 84A for mounting the first connecting member 80A.

The first connecting member 80A is attached to the first connecting member mounting portion 84A by the following procedure. The tip of the horizontal portion 82a is inserted into the notch 84a of the bottom plate 36 and the groove 84b of the lower frame 52, and the hook portion is hooked on the lower frame 52. The fastening plate 83 is brought into contact with the inner surface of the upper frame 51. The bolts passed through the holes formed in the fastening plate 83 are fastened to the bolt holes 84c of the upper frame 51. As a result, the first connecting member 80A is fixed to the first outrigger outer box 30A.

As shown in FIG. 10, the second outrigger inner box 20B has a second slide cylinder 25B. The tip of the piston rod of the second slide cylinder 25B is connected to the second outrigger inner box 20B. A trunnion 26 is provided at the cap-side end of the cylinder body constituting the second slide cylinder 25B. The trunnion 26 is supported by the second connecting member 80B. That is, the cylinder body of the second slide cylinder 25B is connected to the second connecting member 80B.

The cylinder body of the second slide cylinder 25B may be connected to the second outrigger inner box 20B. In this case, a trunnion 26 is provided at the tip of the piston rod of the second slide cylinder 25B and is connected to the second connecting member 80B.

The second connecting member 80B is basically a member having the same configuration as the first connecting member 80A. The second connecting member 80B is attached to the second connecting member mounting portion 84B. The second connecting member mounting portion 84B basically has the same configuration as the first connecting member mounting portion 84A.

The first connecting member mounting portion 84A is formed on both the second opening end portion 32 and the fourth opening end portion 34. Therefore, the first connecting member 80A can be attached to both the first outrigger outer box 30A and the second outrigger outer box 30B.

The first connecting member 80A is attached to the outrigger outer boxes 30A and 30B to which the first outrigger inner box 20A is inserted. That is, when the first outrigger inner box 20A is inserted into the first outrigger outer box 30A, the first connecting member 80A is attached to the first outrigger outer box 30A. Conversely, when the first outrigger inner box 20A is inserted into the second outrigger outer box 30B, the first connecting member 80A is attached to the second outrigger outer box 30B.

Further, the second connecting member mounting portion 84B is formed on both the first opening end portion 31 and the third opening end portion 33. Therefore, the second connecting member 80B can be attached to both the first outrigger outer box 30A and the second outrigger outer box 30B.

The second connecting member 80B is attached to the outrigger outer boxes 30A and 30B to which the second outrigger inner box 20B is inserted. That is, when the second outrigger inner box 20B is inserted into the first outrigger outer box 30A, the second connecting member 80B is attached to the first outrigger outer box 30A. Conversely, when the first outrigger inner box 20A is inserted into the second outrigger outer box 30B, the second connecting member 80B is attached to the second outrigger outer box 30B.

(10) Cover As shown in FIG. 13, a first cover 90A is attached to the first connecting member 80A. The first cover 90A has a shape that closes the openings of the outrigger outer boxes 30A and 30B (see FIG. 1).

The first cover 90A is selectively attached to either the second opening end portion 32 or the fourth opening end portion 34 together with the first connecting member 80A. That is, when the first outrigger inner box 20A is inserted into the first outrigger outer box 30A, the first cover 90A is attached to the first outrigger outer box 30A. Then, the opening of the second opening end portion 32 is closed by the first cover 90A.

Conversely, when the first outrigger inner box 20A is inserted into the second outrigger outer box 30B, the first cover 90A is attached to the second outrigger outer box 30B. Then, the opening of the fourth opening end portion 34 is closed by the first cover 90A.

As shown in FIG. 11, a second cover 90B is attached to the second connecting member 80B. The second cover 90B is basically a member having the same configuration as the first cover 90A.

The second cover 90B is selectively attached to either the first opening end portion 31 or the third opening end portion 33 together with the second connecting member 80B. That is, when the second outrigger inner box 20B is inserted into the first outrigger outer box 30A, the second cover 90B is attached to the first outrigger outer box 30A. Then, the opening of the first opening end portion 31 is closed by the second cover 90B.

Conversely, when the second outrigger inner box 20B is inserted into the second outrigger outer box 30B, the second cover 90B is attached to the second outrigger outer box 30B. Then, the opening of the third opening end 33 is closed by the second cover 90B.

By attaching the covers 90A and 90B, it is possible to close the openings of the outrigger outer boxes 30A and 30B to which the outrigger inner boxes 20A and 20B are not inserted. Therefore, the mechanical parts such as the slide cylinders 25A and 25B are not exposed to the outside, which is safe for the worker.

If the covers 90A and 90B are removed, the worker can access the inside of the outrigger outer boxes 30A and 30B. Therefore, maintenance such as lubrication work to the sliding portions of the outrigger inner boxes 20A and 20B and the outrigger outer boxes 30A and 30B can be easily performed.

(11) Piping As shown in FIG. 2, a first piping hole 38A is formed in the top plate 35 in both the second opening end portion 32 and the fourth opening end portion 34. The first pipe 27A is passed through the first pipe hole 38A. The first pipe 27A is a pipe for supplying hydraulic oil to the first outrigger jack 10A and the first slide cylinder 25A. The first pipe 27A is connected to the base end portion of the first outrigger inner box 20A (see FIG. 13).

In order to hydraulically drive the first outrigger jack 10A and the first slide cylinder 25A, it is necessary to draw hydraulic oil from an externally installed hydraulic source into the outrigger device 1. By passing the first pipe 27A through the first pipe hole 38A, the hydraulic oil can be drawn into the outrigger outer boxes 30A and 30B.

The first pipe 27A is passed through the first pipe hole 38A formed in the outrigger outer boxes 30A and 30B to which the first outrigger inner box 20A is inserted. That is, when the first outrigger inner box 20A is inserted into the first outrigger outer box 30A, the first pipe 27A is passed through the first piping hole 38A of the first outrigger outer box 30A. On the contrary, when the first outrigger inner box 20A is inserted into the second outrigger outer box 30B, the first pipe 27A is passed through the first piping hole 38A of the second outrigger outer box 30B. As a result, the hydraulic oil can be drawn into the outrigger outer boxes 30A and 30B into which the first outrigger inner box 20A is inserted.

Further, a second piping hole 38B is formed in the top plate 35 in both the first opening end portion 31 and the third opening end portion 33. The second pipe 27B is passed through the second pipe hole 38B. The second pipe 27B is a pipe for supplying hydraulic oil to the second outrigger jack 10B and the second slide cylinder 25B.

The second pipe 27B is passed through the second pipe hole 38B formed in the outrigger outer boxes 30A and 30B to which the second outrigger inner box 20B is inserted. That is, when the second outrigger inner box 20B is inserted into the first outrigger outer box 30A, the second pipe 27B is passed through the second pipe hole 38B of the first outrigger outer box 30A. On the contrary, when the second outrigger inner box 20B is inserted into the second outrigger outer box 30B, the second pipe 27B is passed through the second pipe hole 38B of the second outrigger outer box 30B. As a result, the hydraulic oil can be drawn into the outrigger outer boxes 30A and 30B to which the second outrigger inner box 20B is inserted.

It is preferable that the pipes 27A and 27B and the pipe on the hydraulic source side are connected by a rapid joint. If the pipes 27A and 27B are separated from the pipes on the hydraulic pressure source side when the outrigger device 1 is assembled, the outrigger inner boxes 20A and 20B can be easily inserted into the outrigger outer boxes 30A and 30B.

Further, it is preferable to close the pipe holes 38A and 38B through which the pipes 27A and 27B do not pass with a cover member. Since the piping holes 38A and 38B are arranged near the upper frame 51 constituting the reinforcing frames 50A and 50B, the bolt holes 84c formed in the upper frame 51 can be used for attaching the cover member.

[Other embodiments]
The outrigger device 1 of the above embodiment has a configuration in which the outrigger inner boxes 20A and 20B are extended and retracted by hydraulic cylinders (slide cylinders 25A and 25B). Instead of this, the outrigger inner boxes 20A and 20B may be manually extended and retracted.

In this case, it is not necessary to provide the slide cylinders 25A and 25B in the outrigger inner boxes 20A and 20B. Further, it is not necessary to attach the connecting members 80A and 80B. The covers 90A and 90B may be attached to the outrigger outer boxes 30A and 30B via other members, or the covers 90A and 90B may be directly attached to the outrigger outer boxes 30A and 30B.

1 Outrigger device 10A 1st outrigger jack 10B 2nd outrigger jack 20A 1st outrigger inner box 20B 2nd outrigger inner box 30A 1st outrigger outer box 30B 2nd outrigger outer box 31 1st open end 32 2nd open end 33 3rd opening end 34 4th opening end 60A 1st spacer 60B 2nd spacer 70A 1st locking device 70B 2nd locking device 80A 1st connecting member 80B 2nd connecting member 90A 1st cover 90B 2nd cover

Claims (10)

With the first outrigger jack,
The first outrigger inner box provided with the first outrigger jack at the tip, and
With the second outrigger jack,
The second outrigger inner box provided with the second outrigger jack at the tip, and the second outrigger inner box.
A tubular first outrigger outer box having a first open end and a second open end,
A tubular second outrigger outer box with a third open end and a fourth open end.
The first outrigger outer box and the second outrigger outer box are arranged side by side so that their central axes are parallel to each other in the horizontal plane.
The first open end and the third open end are arranged at the same position in the axial direction of the first outrigger outer box and the second outrigger outer box.
The second open end and the fourth open end are arranged at the same positions in the axial direction of the first outrigger outer box and the second outrigger outer box.
The first outrigger inner box is selectively inserted into either the first outrigger outer box or the second outrigger outer box from either the first open end or the third open end.
In the second outrigger inner box, the first outrigger inner box of the first outrigger outer box and the second outrigger outer box is inserted from either the second opening end portion or the fourth opening end portion. An outrigger device that is characterized by being inserted into the other side. The top plate of each of the first opening end, the second opening end, the third opening end, and the fourth opening end protrudes outward from the bottom plate, and the protruding width thereof is the first. 1 The outrigger device according to claim 1, wherein the width of the outrigger jack or the second outrigger jack is the same as or longer than that of the second outrigger jack. A first reinforcing frame provided on the outer periphery of the first opening end and the third opening end, and
The outrigger device according to claim 1 or 2, further comprising a second reinforcing frame provided on the outer periphery of the second opening end portion and the fourth opening end portion. The outrigger device according to claim 1, 2 or 3, wherein the first outrigger outer box and the second outrigger outer box are connected to each other via a partition plate constituting a common side plate thereof. The outrigger device according to claim 4, wherein reinforcing plates are provided at both ends of the partition plate. A first spacer attached to a portion of the first outrigger inner box facing the partition plate and ensuring a gap larger than the thickness of the reinforcing plate between the first outrigger inner box and the partition plate.
A second spacer attached to a portion of the second outrigger inner box facing the partition plate and ensuring a gap larger than the thickness of the reinforcing plate between the second outrigger inner box and the partition plate. The outrigger device according to claim 5, wherein the outrigger device is provided. A first lock device that stops the slide of the first outrigger inner box with respect to the first outrigger outer box or the second outrigger outer box.
A second lock device for stopping the slide of the second outrigger inner box with respect to the first outrigger outer box or the second outrigger outer box is provided.
Both the first opening end and the third opening end have a first locking device mounting portion to which the first locking device is mounted.
2. 6. The outrigger device according to 6. A first slide cylinder in which a piston rod or a cylinder body is connected to the first outrigger inner box,
The cylinder body of the first slide cylinder or the first connecting member to which the piston rod is connected and
A second slide cylinder in which a piston rod or a cylinder body is connected to the second outrigger inner box,
The cylinder body of the second slide cylinder or the second connecting member to which the piston rod is connected is provided.
Both the second opening end and the fourth opening end have a first connecting member mounting portion to which the first connecting member is mounted.
Claims 1, 2, 3, 4, 5, wherein both the first opening end portion and the third opening end portion have a second connecting member mounting portion to which the second connecting member is mounted. The outrigger device according to 6 or 7. A first cover that is selectively attached to either the second opening end or the fourth opening and closes the opening of the second opening or the fourth opening.
Provided with a second cover that is selectively attached to either the first opening end or the third opening and closes the opening of the first opening or the third opening. The outrigger device according to claim 1, 2, 3, 4, 5, 6, 7 or 8. A first piping hole for passing a pipe for supplying hydraulic oil to the first outrigger jack is formed in both the second opening end and the fourth opening end.
2. 2, 3, 4, 5, 6, 7, 8 or 9 Outrigger device.

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