JPH04117895U - crane outrigger box - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the dimensional control of the height of the box tip and maintain high precision in the dimensions of the same part. [Configuration] Top plate 12, bottom plate 13, side plates 14 on both front and rear sides,
15, the top plate 12 has a tip plate portion 12b provided at the tip of the box that becomes the entrance/exit side when the outrigger beam extends and is stored, and The tip plate part 12b is welded to the main body plate part 12a at the ends where they touch each other, and both front and rear ends are connected to the side plates 14,
It is welded to the inner surface of 15.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to an outrigger box that constitutes a crane outrigger device. It is.

0002

[Conventional technology]

As shown in Figure 4, the outrigger device of the crane is connected to the undercarriage body frame. outrigger box 1 fixed to the system, and slide into this outrigger box 1 The outrigger beam 2, which is provided so that it can be freely fitted and extended and retracted, and this An overhanging cylinder 3 that extends and stores the Utriga beam 2, and the tip of the beam 2 It consists of an outrigger jack 4 installed on the Extend the outrigger beam 2 to the side of the vehicle as shown by the phantom line, and install the outrigger jack. 4 to the ground to lift and support the vehicle body.

0003 The outrigger box 1 in this outrigger device is as shown in Figures 5 and 6. , is formed into a box shape by a top plate 5, a bottom plate 6, and side plates 7 and 8 on both front and rear sides.

0004 In addition, the outrigger box 1 has reinforcing plates and attachments to the traveling body frame in various places. Attachment members, etc. are provided, but these are not shown here to make the explanation easier to understand. It is omitted.

[0005] In addition, outrigger devices are installed on both the front and rear sides of the vehicle for left and right extensions. Since the two are installed adjacent to each other in the front and back, the outriggers of both outriggers are usually Gaboxes 1 and 1 share a top plate 5, a bottom plate 6, and one side plate 8 as shown in the figure. It consists of a state in which

[0006] In this case, in the conventional outrigger box 1, by bending a flat plate, A top plate 5 and one side plate 7 (hereinafter referred to as the first side plate and the other side plate 8 as the second side plate) ) are integrally formed, and the bottom plate 6 and the second side plate 8 are welded and fixed to these and assembled into a box shape. It's standing up.

[0007] Note that the top plate 5 and the bottom plate 6 are provided with a tip end that is on the entrance/exit side of the outrigger beam 2. Cutouts 9 and 10 are provided for escape from the outrigger jack 4.

[0008]

[Problem that the idea aims to solve]

In the outrigger device, the projection from the ground plane in the extended state shown by the imaginary line in Fig. The lifting force acts on the outrigger beam 2 via the outrigger jack 4, and this force is supported at the tip of the outrigger box 1.

[0009] Therefore, the tip of this box (with outrigger beam 2 in the outrigger extended state) For example, if there is a large error in the height dimension of the parts that contact and support the load, The gap in the height direction between the outrigger box 1 and outrigger beam 2 will become larger. Than, Outrigger beam 2 rattles during crane work with outriggers extended. A problem occurs, The contact area between outrigger box 1 and outrigger beam 2 becomes smaller and the surface The pressure increases, Beam 2 is tilted upwards, resulting in an unsightly appearance. Problems such as this arise.

0010 Therefore, the height dimension (distance between the top plate 5 and the bottom plate 6) H of this box tip is high. High precision is required.

[0011] In this case, in the conventional outrigger box 1, both the top plate 5 and the bottom plate 6 are The whole body including the tip part is formed in one piece, and the distance between them is determined by the distance between the top plate 5 and the first plate. Depending on the bending accuracy of the side plate 7 and the cutting accuracy of the flat material before this bending process, etc. The height of the top of the box, H, is subject to precise dimensional control. This made it difficult to maintain accuracy, and variations in dimensional accuracy became unavoidable.

0012 Therefore, the present invention aims to maintain high precision in the height dimension of the tip of the box. This provides a crane outrigger box that can be used to

[0013]

[Means to solve the problem]

This invention has a box-like structure consisting of a top plate, a bottom plate, and side plates on both front and rear sides. In the crane outrigger box where the gabeam is extended and retractably fitted. so that at least one of the top plate and the bottom plate is on the entrance/exit side of the outrigger beam. The tip plate part provided at the tip of the box and the part other than the tip of the box. The top plate is separated into a main body plate that can be At the same time, both front and rear ends are welded to the inner surfaces of the above-mentioned both side plates. It is something.

[0014]

[Effect]

As mentioned above, for at least one of the top plate and the bottom plate, the tip plate part is located between both side plates. Since it is welded together in a so-called drop-in type, the height position of the tip plate part can be adjusted during this connection. By doing so, the height of the box tip can be precisely controlled.

[0015]

【Example】

An embodiment of the present invention will be described with reference to FIGS. 1 to 3.

[0016] The outrigger box 11 shown in this embodiment is similar to the conventional outrigger box 11 shown in FIGS. Similar to the Riga Box 1, it includes a top plate 12, a bottom plate 13, and first and second side plates 14. , 15, and two outrigger boxes, one for left extension and one for right extension. A top plate 12, a bottom plate 13, and a second side plate 15 are shared by the bases 11, 11. 16 and 17 are This cutout corresponds to the cutouts 9 and 10 in FIGS. 4 to 6.

[0017] The top plate 12 is flat in the same way as the conventional top plate 5 except for the top of the box. A main body plate portion 12a formed integrally with the first side plate 14 by bending a plate material, and a The part that supports the load by contacting the outrigger beam when the outrigger is extended. The tip plate portion 12b is provided only at the tip of the box where the dimensional accuracy of the height is a problem. It is divided into two parts.

[0018] This tip plate portion 12b is formed into a square plate shape with a notch 16, and the main body plate portion 12 After assembling a and the other members, attach the side plates 14 at the front end of the box as shown in the figure. , 15, and welded at the end adjacent to the main body plate part 12a. At the same time, it is attached by welding to the inner surfaces of the side plates 14 and 15. There is.

[0019] Therefore, during this installation, the distance between the tip of the bottom plate 13 and the tip plate 12b (box Mount the tip plate part 12b in the height direction so that By adjusting the position, this height dimension can be precisely controlled. sand That is, it becomes possible to maintain high precision in the height dimension H of the box tip.

[0020] Note that the tip plate portion 12b is a portion that supports the load when the outriggers are extended. In this embodiment, the tip plate portion 12a requires higher strength than the main body plate portion 12a. b is formed of a thicker plate material than the main body plate part 12a.

[0021] In other words, the top plate 12 is divided into the main body plate part 12a and the tip plate part 12b in this way. If the main body plate portion 12a is made of a thin plate material, bending processing etc. can be easily performed. This can be done easily, and the tip plate portion 12b has an appropriate thickness depending on the required strength, etc. Dimensions can be freely selected.

[0022] By the way, in the above embodiment, regarding the top plate 12, the main body plate part 12a and the tip plate part 12 are b, but this configuration can be used as is on the bottom plate 13 or on the top plate 1. 2 and the bottom plate 13.

[0023]

[Effect of the idea]

According to the present invention as described above, at least one of the top plate and the bottom plate , a tip plate portion provided at the tip of the box that is on the entrance/exit side of the outrigger beam; It is configured separately from the main body plate provided in the area other than the box tip, and the tip plate is Since the two plates are welded together in a so-called drop-in type, the tip plate is Precise control of the height of the box tip by adjusting the height position of the box It can be carried out.

[0024] Therefore, it is possible to maintain high precision in the height dimension of this box tip. , due to this dimensional error, the outrigger beam is There may be rattling, or the contact area between the beam and the tip of the box may become small, causing the surface to become unstable. There is no fear that the pressure will increase.

[Brief explanation of drawings]

FIG. 1 is a half-sectional plan view of an outrigger box according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view taken along the line II-II in FIG. 1;

FIG. 3 is an enlarged sectional view taken along line III-III in FIG. 1;

FIG. 4 is a vertical cross-sectional view of an outrigger device using a conventional outrigger box.

FIG. 5 is a half-sectional plan view of the outrigger box.

FIG. 6 is an enlarged sectional view taken along the line VI-VI in FIG. 5;

[Explanation of symbols]

11 Outrigger box 12 Top plate 12a Main body plate part of top plate 12b Same tip plate part 13 Bottom plate 14,15 Side plate

Claims (1)

[Scope of utility model registration request] Claim 1: An outrigger box for a crane that is configured in a box shape with a top plate, a bottom plate, and side plates on both front and rear sides, and in which an outrigger beam extends and is fitted in a retractable manner,
At least one of the top plate and the bottom plate is configured to be divided into a tip plate section provided at the box tip section which is the entrance/exit side of the outrigger beam, and a main body plate section provided at a portion other than the box tip section, An outrigger box for a crane, characterized in that the plate portion is welded to the main body plate portion at ends that contact each other, and both front and rear ends are welded to the inner surfaces of the both side plates.