JPH0143964Y2 - - Google Patents

Description

[Detailed description of the invention] This invention consists of an outer cylinder suspended horizontally on the vehicle body, an inner cylinder slidably inserted into the outer cylinder, a cylinder equipped with a hose connector at its bottom end, and an extendable and retractable cylinder from this cylinder. a piston rod that is driven and has a ground plate at its outer end; This invention relates to an outrigger device consisting of a hose for supplying and discharging hydraulic oil to and from a jack cylinder.

A conventional outrigger device of this type will be described with reference to FIG. 1. Reference numeral 1 denotes an outer cylinder that is horizontally mounted on a vehicle body.
The outer cylinder 1 includes a top plate 2, a lower support plate 3, and both side plates 4 and 5.
A cylindrical body 6 having a rectangular cross section, and an outer end of the cylindrical body 6 such that its lower surface is located below the lower surface of the top plate 2 of the cylindrical body 6 and is approximately parallel to the top plate 2. The inner cylinder reaction force support part 7 is fixed to the inner cylinder reaction force support part 7. 8
is an inner cylinder, and this inner cylinder 8 is located at the outer end of the outer cylinder 1 defined by the inner cylinder reaction force support part 7 at the outer end of the outer cylinder 1, the lower support plate 3, and the side plates 4 and 5. It has a hollow rectangular cross-sectional shape that is slidably inserted into the outer cylinder 1 so that it can be expanded and contracted from the opening. Reference numeral 9 is a jack cylinder consisting of a cylinder 10 equipped with a hose connector 13 at its bottom end, and a piston rod 12 which is telescopically driven from this cylinder 10 and has a ground plate 11 at its outer end. The cylinder 9 is vertically installed at the outer end of the inner cylinder 8 with the ground plate 11 positioned below. Reference numeral 14 denotes a hose that loosely connects the hose connector 13 and a hydraulic oil supply/discharge path 15 provided at a suitable location at the outer end of the outer cylinder 1 through the outside of the outer cylinder 1 and the inner cylinder 8. Reference numeral 16 denotes a bracket welded and attached to the outer surface of the cylinder 10 of the jack cylinder 9. By fixing this bracket 16 to the outer end of the inner cylinder 8 with bolts 17, 17, the jack cylinder 9 is fixed to the inner cylinder. 8. It is fixed vertically to the tip.

The above-mentioned conventional outrigger device configured in this manner can be designed to have a large height dimension of the outer cylinder 1 regardless of the height dimension of the inner cylinder 8. It is convenient to ensure the strength of the outer cylinder 1 when used for a portion. Furthermore, the structure is simple because the cylinder 10 of the cylinder 9 is vertically fixed to the outer end of the inner cylinder 8, and the ground plate 11 is placed directly on the outer end of the piston rod 12. Although it has various advantages, it also has the following disadvantages.

(1) When the inner cylinder 8 is maximally contracted into the outer cylinder 1 (outrigger device retracted state), the jack cylinder fixed vertically to the tip of the inner cylinder 8 is positioned outside the outer cylinder 1. Therefore, the inner cylinder reaction force support part 7 at the outer end of the outer cylinder 1 cannot be positioned across the full width of the vehicle, and the amount of extension of the inner cylinder 8 decreases accordingly.

(2) On the outside of the cylinder 10 of the jack cylinder 9,
The bracket 16 for attaching the jack cylinder 9 to the outer end of the inner cylinder 8 must be welded, which tends to cause distortion in the cylinder 9.

(3) Since the bracket 16 of the cylinder 10 of the jack cylinder 9 is attached by directly tightening bolts to the outer end of the inner cylinder 8, the tightening surface cannot be larger than the cross-sectional dimension of the inner cylinder 8; Since the attached surface follows the support reaction force of the jack cylinder, it is difficult to securely fix the jack cylinder 9 vertically to the tip of the inner cylinder 8.

(4) Since the hose 14 is exposed to the outside of the outer tube 1 and the inner tube 8, it is easily damaged.

The object of the present invention is to maintain the above-mentioned advantages while eliminating the above-mentioned disadvantages in the conventional outrigger device mentioned above.

The configuration of the outrigger device devised to achieve the above object is as follows.

An outer cylinder 1 suspended horizontally on the vehicle body, an inner cylinder 8 slidably inserted into the outer cylinder 1, a jack support frame 18 attached to the tip of the inner cylinder 8, and a frame 18 for supporting jacks, which is removably fastened to its bottom end. A cylinder 10 equipped with a hose connector 22 and a piston rod 12 that is telescopically driven from the cylinder 10 and has a ground plate 11 at its outer end.
a jack cylinder 9, which is attached to the jack supporting frame 18 with its ground plate 11 positioned downward; and a jack cylinder 9 that operates from the outer cylinder 1 side to the jack cylinder. An outrigger device consisting of a hose 24 for supplying and discharging oil, in particular, the outer cylinder 1 is a cylindrical body 6 with a rectangular cross section composed of a top plate 2, a lower support plate 3, and side plates 4, 5. A cylindrical body 6 configured such that the outer end position of the lower receiving plate 3 of the cylindrical body 6 is positioned inward from the outer end position of the top plate 2 by approximately the width of the jack support frame 18, and the lower surface thereof. is composed of an inner cylinder reaction force support portion fixed to the outer end of the cylindrical body 6 so as to be located below the lower surface of the top plate 2 of the cylindrical body 6 and substantially parallel to the top plate 2. , the inner cylinder 8 is configured to expand and contract from an opening at the outer end of the outer cylinder 1 defined by the inner cylinder reaction force support part 7, the lower support plate 3, and both side plates 4 and 5 of the outer cylinder 1. The jack supporting frame 18 has a hollow rectangular cross-sectional shape that is slidably inserted into the inner cylinder 8; It is welded and fixed to the outer end of the inner cylinder 8 with one side surface abutting the outer end opening of the inner cylinder 8 so that the hose passage hole 19 provided on the side communicates with the inner space of the inner cylinder 8, and the upper inside thereof. a support surface 2 that abuts and supports the outer peripheral portion of the upper end surface of the cylinder 10 from below;
0, and its lower end extends below the lower surface of the inner cylinder 8 so that the distance between the lower end and the bearing surface 20 is greater than the height dimension of the inner cylinder 8. The jack cylinder 9 has an opening 26 on the upper side of the jack supporting frame 18;
The outer periphery of the upper end surface is brought into contact with the support surface 20 of the jack support frame 18 and fixed with a bolt, and the lower proper position of the cylinder 10 is held at the lower end of the jack support frame 18 so as not to be able to swing. The hose connector 22, which is removably fastened to the bottom end of the jack cylinder 9, is connected to the center of the upper end surface of the cylinder 10 of the jack cylinder 9 from above. The hose 24 is removably fastened in the abutted state; one end of the hose 24 is fixedly connected to the side surface of the hose connector 22, and the hose 24 is connected to the hose passage hole of the jack support frame 18 from there. 19,
It passes through the inside of the inner cylinder 8, reaches the outer side of the base end of the inner cylinder 8, is inverted and folded back, and further passes between the top plate 2 of the outer cylinder 1 and the upper side of the inner cylinder 8, and reaches the outer end of the outer cylinder 1, It is characterized in that the other end is connected to a hydraulic oil supply/discharge passage 25 at a proper location in the outer cylinder 1.

According to the outrigger device of the present invention having the above configuration, compared to conventional outrigger devices, only the configuration of the outer end of the outer cylinder 1, the mounting structure of the jack cylinder to the outer end of the inner cylinder, and the hose arrangement structure are provided. Since the above-mentioned advantages of the prior art are maintained, the drawbacks of the prior art are eliminated as described below.

(a) When the inner cylinder 8 is maximally contracted into the outer cylinder 1, the jack support frame housing the jack cylinder is positioned below the inner cylinder reaction force support part 7 at the tip of the outer cylinder 1. Therefore, the inner cylinder reaction force support portion 7 can be positioned over the entire width of the vehicle,
The amount of extension of the inner cylinder can be increased accordingly. Moreover, even when the inner cylinder 8 is in its most contracted state, the vehicle can be jacked up by extending the jack cylinder 9.

(b) The jack cylinder is fixed with a bolt by abutting its upper end from below against a support surface provided inside the upper part of a jack support frame that is firmly fixed to the outer end of the inner cylinder 8 by welding, and Since it is attached to the lower end of the jack support frame so that it cannot swing, there is no need to weld a bracket or the like to the outside of the cylinder 10 of the jack cylinder 9, eliminating distortion of the cylinder due to welding. be able to.

(c) The jack cylinder has a jack supporting frame firmly fixed to the outer end of the inner cylinder 8 by welding (this jack supporting frame is longer than the height of the inner cylinder 8). Since its upper end is in contact with the support surface of Since the positions (upper and lower positions separated by a distance greater than the height of the inner cylinder 8) are supported by the jack support frame, the vertical fixation of the jack cylinder 9 to the tip of the inner cylinder 8 must be extremely firmly established. I can do it.

(d) The hose connects one end of the hose to the hose connector placed on the bottom end of the cylinder of the jack cylinder, through the hose passage hole of the jack support frame, and into the inner cylinder 8.
It passes through the inside and reaches the outside of the base end of the inner cylinder, where it is inverted and folded, and then passes between the top plate 2 of the outer cylinder 1 and the upper side of the inner cylinder 8, and reaches the outer end of the outer cylinder 1, and the other end is connected to the outer cylinder. Since it is connected to the hydraulic oil supply and drain passage provided at the appropriate location, hydraulic oil can be supplied and discharged to the jack cylinder 9 regardless of the expansion and contraction movement of the inner cylinder 8 with respect to the outer cylinder 1, and moreover, the inner cylinder 8 and the outer cylinder 1 are always connected to each other. Since it is located inside the cylinder 1, it will not be damaged from the outside.

An embodiment of the outrigger device of the present invention will be described above based on FIG. 2. The outrigger device of the present invention differs from the prior art shown in FIG. There is a difference between Therefore, the reference numerals 1 to 12 used in the description of the prior art based on FIG. 1 are also used in the following description as having the same meaning.

In FIG. 2, the outer end of the outer cylinder 1 is connected to a cylindrical body 6.
The outer end position of the lower receiving plate 3 is located inward of the vehicle body than the outer end position of the top plate 2 by approximately the width of a jack supporting frame 18, which will be described later. Reference numeral 18 denotes a frame for supporting a jack, and the upper side of the frame for supporting a jack is substantially flush with the upper surface of the inner cylinder 8, and a hose passage hole is provided on one side of the frame. 19 is welded and fixed to the outer end of the inner cylinder 8 with its one side surface in contact with the outer end opening of the inner cylinder 8 so as to communicate with the inner space of the inner cylinder 8, and its lower end is the lower surface of the inner cylinder 8. It is configured to extend downward. In this embodiment, the extension of the upper plate of the inner cylinder 8 constitutes the upper plate of the jack supporting frame. The upper interior of the jack support frame is provided with a horizontal flange having a support surface 20 that abuts and supports the outer circumference of the upper end surface of the cylinder 10 of the jack cylinder 9 from below. The jack cylinder 9 has the upper end surface outer circumference of the cylinder 10 in contact with the support surface 20 of the jack support frame 18 from below and is fixed with a bolt 21, and the cylinder 10 is fixed at a suitable lower position to the jack support. The lower end of the jack supporting frame 18 is held so as not to swing in the front, back, right and left directions, thereby fixing the jack cylinder 9 to the jack supporting frame 18.
The support surface 20 in the jack support frame 18
The distance between the upper and lower ends is set to be larger than the height of the inner cylinder 8, and therefore the jack cylinder 9 is mounted on the jack support frame at two positions, upper and lower, which are spaced apart from each other by a distance greater than the height of the inner cylinder 8. It is fixed to the body 18. In this way, the jack cylinder 9 has an inner cylinder 8.
It is attached via the jack support frame 18 which is firmly fixed to the tip by welding.
Since the inner cylinder 8 is fixed in two positions, upper and lower, separated by a distance greater than the height of the inner cylinder 8,
It can be fixed vertically to the tip. Furthermore, the ground reaction force of the jack cylinder 9 is transmitted to the jack support frame 1 via the support surface 20 orthogonal to the reaction force.
8 can be reasonably transmitted.

22 is a hose connector removably fastened to the bottom end of the jack cylinder 9;
The jack cylinder 9 attached to the jack support frame 20 is removably fastened with a bolt 23 in contact with the center portion of the upper end surface of the cylinder 10 from above. In this embodiment, the cylinder 10 is removably fastened to the hose connector 22.
The center portion of the upper end surface is formed on the upper surface of the portion extending onto the horizontal flange from the outer periphery of the upper end surface of the cylinder 10, that is, the contact surface of the horizontal flange with the support surface 20.

Reference numeral 24 denotes a hose for supplying and discharging hydraulic oil for driving the jack cylinder 9 from the outer cylinder 1 side to the jack cylinder 9 side, and this hose 24 has one end connected to the upper end of the cylinder 10 of the jack cylinder 9. fixedly connected to the side surface of the hose connector 22 arranged on the
From there, it passes through the hose passage hole 19 of the jack support frame 18, the inside of the inner cylinder 8, and reaches the outside of the base end of the inner cylinder 8.
There, it is turned around and then passed between the top plate 2 of the outer cylinder 1 and the upper side of the inner cylinder 8 to reach the outer end of the outer cylinder 1, and the other end is connected to the hydraulic oil supply/discharge passage 25 provided at the appropriate location of the outer cylinder 1. are doing. This arrangement of the hose 24 is as follows:
When the inner cylinder 8 is driven to expand and contract with respect to the outer cylinder 1, the inverted folded portion of the hose 24 is transferred within the outer cylinder 1, ensuring supply and discharge of hydraulic oil between the outer cylinder 1 and the jet cylinder 9. It is something. During this time, the hose 24
It is always located within the outer cylinder 1 and inner cylinder 8 and is not damaged from the outside.

26 is an opening provided on the upper side of the jack supporting frame 18. This opening 26 is used to tighten the bolt 21 that attaches the cylinder 10 to the support frame 18 and the hose connector 22 to the center of the upper end surface of the cylinder 10 when assembling and disassembling the jack cylinder 9 to the jack support frame 18. This is a working opening for operating the bolt 23 attached. This opening 26 is closed with a suitable lid except when the jack cylinder 9 is assembled to and disassembled from the jack support frame 18. In this example, the opening 26 is opened by a lid 27 fixed by a bolt 23 that fastens the hose connector 22 to the center of the upper end surface of the cylinder 10. However, such a lid is not necessarily necessary or an essential requirement of the present invention.

In the above embodiment, the inner cylinder reaction force support part 7 of the outer cylinder 1 is positioned so that its outer end position is approximately equal to the outer end position of the top plate 2 of the cylindrical body 6, and A horizontal plate is fixed as a bridge between the side plates 4 and 5 parallel to the top plate 2 below the outer end of the outer cylinder 1, and the lower edge of the horizontal plate is fixed to the upper side of the outer end of the horizontal plate and the top of the outer cylinder 1. Although it is composed of the plate 2 and the standing wall plates fixed to the outer ends of the side plates 4 and 5, other embodiments may include only the above-mentioned horizontal plate or only the above-mentioned standing wall plates. Of course it's a good thing.

The outrigger device of the present invention, which is configured and operates as described above, eliminates the drawbacks of the conventional outrigger device described above, can secure a large amount of extension of the inner cylinder 8, and has the following features: Since there is no need to provide a bracket to hang and fix the cylinder 9 to the tip of the inner cylinder 8, distortion of the cylinder 10 due to welding can be eliminated, and the cylinder 9 can be firmly hung and fixed to the tip of the inner cylinder 8. This has the excellent effect of being able to do a lot of damage to the hose 24 and eliminating damage to the hose 24 from the outside.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of a conventional outrigger device, Figure 2
The figure is an explanatory diagram of the outrigger device of the present invention. 1; outer cylinder, 2; top plate, 3; lower support plate, 4 and 5; side plates, 6; cylindrical body, 7; inner cylinder reaction force support part,
8; Inner cylinder, 9; Jack cylinder, 10; Cylinder, 11; Ground plate, 12; Piston rod, 1
8; Jacket support frame, 19; Hose passage hole,
20; Supporting surface, 21; Bolt, 22; Hose connector, 23; Bolt, 24; Hose, 25; Hydraulic oil supply and drainage path.

Claims (1)

[Scope of claim for utility model registration] Outer cylinder 1 suspended horizontally on the vehicle body, inner cylinder 8 slidably inserted into outer cylinder 1, jack support frame 18 attached to the tip of inner cylinder 8, and its bottom end. A cylinder 10 is provided with a hose connector 22 removably fastened to the cylinder 10, and a piston rod 12 is telescopically driven from the cylinder 10 and has a ground plate 11 at its outer end.
A jack cylinder 9 is constructed of a jack cylinder 9, which is attached to the jack support frame 18 with its ground plate 11 positioned downward, and hydraulic oil is supplied from the outer cylinder 1 side to the jack cylinder. An outrigger device consisting of a supply/discharge hose 24, in particular, the outer cylinder 1 is a cylindrical body 6 with a rectangular cross section, composed of a top plate 2, a lower support plate 3, and side plates 4, 5. A cylindrical body 6 configured such that the outer end position of the lower receiving plate 3 of 6 is located inward from the outer end position of the top plate 2 by approximately the width of the jack support frame 18, and the lower surface thereof, An inner cylinder reaction force support part 7 is fixed to the outer end of the cylindrical body 6 so as to be located below the lower surface of the top plate 2 of the cylindrical body 6 and substantially parallel to the top plate 2.
The inner cylinder 8 is configured to be expandable and retractable from an opening at the outer end of the outer cylinder 1 defined by the inner cylinder reaction force support part 7, the lower support plate 3, and both side plates 4 and 5 of the outer cylinder 1. The jack supporting frame 18 has a hollow rectangular cross-sectional shape that is slidably inserted into the outer cylinder 1; The one side surface is welded and fixed to the outer end of the inner tube 8 with the one side surface abutting the outer end opening of the inner tube 8 so that the hose passage hole 19 provided on one side surface communicates with the content space of the inner tube 8. A support surface 2 that abuts and supports the outer circumferential portion of the upper end surface of the cylinder 10 from below inside thereof.
0, and its lower end extends below the lower surface of the inner cylinder 8 so that the distance between the lower end and the bearing surface 20 is greater than the height dimension of the inner cylinder 8. The above-mentioned jack cylinder 9 is configured such that an opening 26 is provided on the upper side of the jack supporting frame 18;
The outer periphery of the upper end surface is brought into contact with the support surface 20 of the jack support frame 18 and fixed with a bolt, and the lower proper position of the cylinder 10 is held at the lower end of the jack support frame 18 so as not to be able to swing. The hose connector 22, which is removably fastened to the bottom end of the jack cylinder 9, is connected to the center of the upper end surface of the cylinder 10 of the jack cylinder 9 from above. The hose 24 is removably fastened in the abutted state; one end of the hose 24 is fixedly connected to the side surface of the hose connector 22, and the hose 24 is connected to the hose passage hole of the jack support frame 18 from there. 19,
It passes through the inside of the inner cylinder 8, reaches the outer side of the base end of the inner cylinder 8, is inverted and folded back, and further passes between the top plate 2 of the outer cylinder 1 and the upper side of the inner cylinder 8, and reaches the outer end of the outer cylinder 1, An outrigger device characterized in that the other end is connected to a hydraulic oil supply/discharge path 25 at a proper location in the outer cylinder 1.