JPH0671347U - Stationary crane moving device - Google Patents

Abstract

(57) [Summary] [Structure] Outrigger beams 15 (15a, 15b, 15) extending in four directions radially around the crane main body 14
c, 15d) are formed in a telescopic manner, and the caterpillar wheel mechanism 16 (16a, 16a) that can be horizontally swiveled at the tip of the telescopic outrigger beam 15 and can be independently driven for traveling.
b, 16c, 16d). [Effect] The crane main body can be moved to a desired position without disassembling, and the workability is excellent.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a stationary crane used for hoisting cargo in construction and civil engineering sites.

[0002]

[Prior art]

 FIG. 6 and FIG. 7 show a conventional technique, which includes a support base 1, a swivel base 2 that horizontally turns on the support base 1, and a main body frame 3 attached to the swivel base 2 and having an operation room and the like. , A boom 4 attached to the main body frame 3, a mast 5 and a lifting rope 6 to form a substantially triangular reinforcing truss structure, and a crane crane 7 for undulating other cranes, or a wire for hanging loads. A crane main body 11 is formed by the members 9 and the like which are operated by a winding drum (not shown) to suspend materials on the hanging hook 10 at the tip thereof and lift them to a desired high place. .

The crane main body 11 is supported at a fixed position by an outrigger beam 12 of a constant length extending radially around the main body 11 and an outrigger 13 (hydraulic jack) at its tip.

The stationary crane is stably supported by an outrigger beam 12 of a constant length extending in all directions and an outrigger 13 at its front end, and a boom for suspending a cargo can be extended to a considerably long length. Since it is possible to increase the working radius and is excellent, it is often used especially for work in high places such as mountainous areas, but since this stationary crane is used at a fixed position as its name suggests, It is difficult to move this to another place, and even when it is moved within a small range, it is necessary to disassemble the flame main body 11 such as the boom 4 for hanging loads so that it can be easily moved and made bulky.

[0005]

[Problems to be solved by the device]

 In view of the conventional problems described above, an object of the present invention is to provide a fixed position type crane that can be installed and used at a fixed position at all times and can be moved within a small range.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, in the invention of claim 1, reference is made to the reference numerals shown in the embodiments, and outrigger beams 15 (15a, 15b, 15a, 15b, 15c, 15d) are formed in a telescopic manner, and a caterpillar wheel mechanism 16 (16a, 16b, 16c, 16d) that can be horizontally swiveled and independently driven can be attached to the tip of the telescopic outrigger beam 15. It adopts a new configuration.

[0007]

[Action]

 According to the invention of claim 1, when used in a fixed position, each outrigger beam 15 (15a, 15b, 15c, 15d) is extended, and preferably the caterpillar wheel mechanism 16 (16a, 16b, 16c). , 16d) is horizontally rotated so as to extend in the axial direction of each outrigger beam 15, and the caterpillar wheel mechanism 16 is stopped in that state to use as a stationary crane as usual.

When the stationary crane is moved within a small range, outrigger beams 15 extending in all directions have outrigger beams 15a and 15b in front of and behind the traveling direction left extended, while the outrigger beams 15a and 15b extend in the traveling direction. The left and right outrigger beams 15c and 15d, which are orthogonal to, are contracted, and the left and right caterpillar wheel mechanisms 16c and 16d, which are orthogonal to the traveling direction, are horizontally rotated in the traveling direction by 90 ° so that all the caterpillar wheel mechanisms 16 are oriented in the traveling direction. In this state, the caterpillar wheel mechanism 16 is driven to move. The outrigger beams 15 on all sides may be moved while being extended.

Each of the caterpillar wheel mechanisms 16 (16a, 16b, 16c, 16d) at the tip of the outrigger beam 15 is horizontally driven independently of each other, and is independently driven to travel, so that steering is performed. Is extremely easy.

[0010]

【Example】

 In FIG. 1, a crane main body 14, to be precise, a support base 28 thereof is integrally provided with outrigger beams 15 (15a, 15b, 15c, 15d) extending radially in four directions. These outrigger beams 15 are composed of a base beam member 18a fixed to a support 28 and a single or a plurality of telescopic beam members 18b which are extensiblely connected to the base beam member 18a by a single-stage or multi-stage hydraulic cylinder (not shown). The caterpillar wheel mechanism 16 (16a, 16b, 16c, 16d) is horizontally rotatably attached to the distal end of the telescopic beam member 18b by a bearing bracket 19. The crane body 14 of the present invention has the same structure as the conventional crane body 11.

As an example of a drive mechanism of the caterpillar wheel mechanism 16, as shown in FIGS. 4 and 5, one of the sprockets 21 and 22 axially attached to both ends of the vehicle body frame 20 is mounted between the one sprocket 21 and the vehicle body frame 20. A hydraulic motor 23 may be attached, one sprocket 21 may be driven by the hydraulic motor 23, and the other sprocket 22 may be driven by the caterpillar 24. The above-mentioned bearing bracket 19 is fixed to the vehicle body frame 20, and a rotary shaft 25 is integrally provided on the bracket 19 so as to project therefrom.

That is, as an example of the horizontal drive mechanism of the caterpillar wheel mechanism 16, as shown in FIGS. 4 and 5, the rotary plate 26 is integrally fixed to the rotary shaft 25, and the rotary plate 26 is installed inside the telescopic beam member 18b. The other end of the hydraulic cylinder 27 having one end thereof pivotally supported may be pivotally supported at the eccentric position of the rotary plate 26, and the caterpillar wheel mechanism 16 may be horizontally driven by the expansion / contraction operation of the hydraulic cylinder 27.

Therefore, when used in a fixed position, as shown in FIG. 1, each outrigger beam 15a is extended by the operation of a hydraulic cylinder incorporated in the telescopic beam member 18b connected to the base beam member 18a. , 15b, 15c, 15d are extended, and each caterpillar 24 of the caterpillar wheel mechanism 16a, 16b, 16c, 16d is horizontally rotated by the operation of the hydraulic cylinder 27 so as to extend in the axial direction of each outrigger beam 15, Then, the caterpillar wheel mechanism 16 is stopped and the stationary crane is used as usual. As a result, the crane body 14 is stably supported by the extended outrigger beam 15 and the caterpillar wheel mechanism 16 extending in the axial direction.

When the stationary crane is moved within a small range, as shown in FIG. 2 or 3, among the outrigger beams 15 extending in all directions, the outrigger beams 15a and 15b before and after the traveling direction should be extended. By contrast, the left and right outrigger beams 15c and 15d orthogonal to the traveling direction are contracted (Fig. 3), and the left and right caterpillar wheel mechanisms 16c and 16d orthogonal to the traveling direction are rotated by 90 ° as shown by arrows in Fig. 1. The caterpillar wheel mechanism 16 is driven to move in a state in which the caterpillar wheel mechanism 16 is horizontally rotated in the traveling direction and all the caterpillar wheel mechanisms 16 are oriented in the traveling direction as shown in FIG. 3 or 2. Note that, as shown in FIG. 2, the four outrigger beams 15 may be moved while being extended.

Since each of the caterpillar wheel mechanisms 16 (16a, 16b, 16c, 16d) at the tip of the outrigger beam 15 is independently driven to horizontally rotate, steering at the time of changing the moving direction can be performed. It is easy, and each caterpillar wheel mechanism 16 is adapted to independently drive and drive, and the drive speed thereof can be changed individually. Therefore, steering is extremely easy also from this aspect.

[0016]

[Effect of device]

 According to the stationary crane according to the invention of claim 1, the stationary crane is installed at a normal fixed position and is stably supported, and the boom for suspending the cargo can be added to the crane for a considerably long length, so that the work can be performed at a high place. It has the effect of being excellent in nature.

Further, according to the present invention, the crane body can be moved to a desired position without disassembling, and the workability is excellent.

Further, according to the present invention, each caterpillar wheel mechanism at the tip portion of the outrigger beam is horizontally driven independently of each other, and is also independently driven so as to travelly drive. Steering in difficult places is extremely easy.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing the same usage state.

FIG. 3 is a perspective view showing the same usage state.

FIG. 4 is a front view showing an example of the main part.

FIG. 5 is a plan view showing an example of a main part of the drawing.

FIG. 6 is a front view of a conventional technique.

FIG. 7 is a plan view of the related art.

[Explanation of symbols]

 14 Crane main body 15 Shows the entire outrigger beam. 15a shows each individual outrigger beam. 15b shows each individual outrigger beam. 15c shows each individual outrigger beam. 15d shows each individual outrigger beam. 16 shows the entire caterpillar wheel mechanism. 16a shows each individual caterpillar wheel mechanism. 16b shows each individual caterpillar wheel mechanism. 16c shows each individual caterpillar wheel mechanism. 16d shows each individual caterpillar wheel mechanism.

Claims (1)

[Scope of utility model registration request] 1. A caterpillar wheel mechanism in which an outrigger beam extending radially in four directions around a crane main body is formed in a telescopic manner, and the tip end portion of the telescopic outrigger beam can be horizontally swiveled and driven independently. A stationary crane moving device that is installed.