JPH09175776A - Traveling mechanism for two support bodies bridge type crane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constitute two support bodies bridge type crane structurally so that a wheel support part can be installed on the frame of a crane by a simple means and high request can not be assigned to a size precision for the machining of a running mechanism. SOLUTION: Two one support body crane half bodies are formed by separating both end part crossing support bodies 2 into two parts with the same bigness and a two wheel support car 12 is arranged respectively between these one support body crane half bodies and combined with end part crossing support bodies 2a, 2b by pins 13. Wheel boxes 6 are installed in order to store running wheels 3 in four outside corners of two support body bridge type crane and these wheel boxes are combined with the end part crossing support bodies 2a, 2b by a combined pin and screw combination parts 7, 8 at the other side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling mechanism for a two-support bridge crane for heavy-duty operation having at least eight crane traveling wheels.

[0002]

The lighter crane bridge of a two-support bridge crane travels on a traveling mechanism with four running wheels, while the crane bridge for heavy-duty operation runs on eight running wheels. , Each of which has two running wheels distributed over four bogies. On the contrary, a very strong two-support bridge crane is supported on each crane rail on four bogies, each with two running wheels. In that case, as much wheel load as possible between the respective end cross supports is desired.

German Patent Application Publication No. 2214
From the '680 patent, a three-point supported crane bridge of a two-support bridge crane is known in which eight running wheels are provided on each rail. At that time, always 2
Two running wheels are arranged on the bogie. On one rail there are always two bogies connected to the crane support, but on the other rail above each two such bogies with crane wheels, one for each crane support. An oscillating platform that is mechanically coupled is arranged. In this way both crane bridge supports are statically defined and supported at three points.

In order to achieve the unobstructed running characteristics of the crane on the rails, the running wheels must be in exact alignment. Therefore, when drilling the support in the crane bridge, it is necessary to be careful of the high precision, which is associated with a lot of work.

The large size of such cranes requires that they be dismantled after completion for transport to the considered site of use.

[0006]

SUMMARY OF THE INVENTION Here, the present invention provides an auxiliary means.

Therefore, the object of the present invention is to make it possible to attach the wheel support to the frame of a crane by simple means and to place a high dimensional accuracy requirement on the mechanical processing of the traveling mechanism. To construct a two-support bridge crane structurally.

[0008]

According to the present invention, this problem is solved as follows. That is, both end transverse supports are divided in the region of their vertical centerlines, and each of the two end transverse supports halves is in its outer end region in the direction of travel on both sides, the wheels. The running wheels at each of the four outer corners of the two-support bridge crane, which are each provided with one receiving hole for the pin connection of the support, are separate wheel boxes, which are at the articulation point. A pin connection is connected to the end transverse support, the articulation point being configured to support the torque resulting from the wheel pressure as pressure, and a further separated wheel box by a screw connection. 1 mounted between both end transverse support halves
Two support wheels are provided as two types of wheel supports with two crane running wheels arranged one behind the other in the direction of travel, one joint each between the support car and the end transverse support half. There is a pin joint.

The distance between the traveling wheels of the crane is large enough to achieve a uniform load distribution.

The bridge crane is guided via traveling wheels located at the four outer corners. The horizontal force is transmitted via the inner support wheel. A simple through hole is sufficient for the split end cross support as a connection with the carrier wheel. It is not necessary to impose high requirements on the precision of these through-holes with regard to their precision during mechanical processing. The opposite holes and the wheel supports on the support wheels and the outer wheel supports for this can be manufactured in the machining center independently of the crane bridge.

The division of the end cross supports provides the bridge crane with the desired dimensions for transport from the crane manufacturer to the point of use. When assembling both crane halves, it is only necessary to produce the pin joint with the intermediate wheel. The transport dimensions thus desired for a two-support bridge crane are otherwise only achieved by expensive separating points provided independently therefor.

Advantageous configurations of the invention are the subject matter of the dependent claims.

[0013]

DETAILED DESCRIPTION OF THE INVENTION The present invention will now be described in detail by way of examples and with reference to the drawings.

According to FIGS. 1 and 2, a two-support bridge crane consists of both supports 1a and 1b and end transverse supports 2 arranged on both sides. The end cross support 2 consists of both end cross support halves 2a and 2b. These end cross support halves 2a and 2b are the support 1a of interest.
Or it is welded to 1b.

The two-support bridge crane can be driven by its traveling wheels 3 on rails 4 belonging to the crane road. The representation of the drive and further details not important to the invention have been omitted in the drawings.
A rail 5 for the crane carriage is arranged longitudinally on both supports 1a and 1b.

The four running wheels 3 at the outer corners respectively are
It is supported in separate wheel boxes 6a and 6b. These wheel boxes 6a and 6b are attached to the outer surface of the end transverse support half 2a or 2b facing in the direction of travel by pin joints 7 at the joint joint points, respectively, and are additionally fixed by screws 8. . This articulation point is arranged such that the torque resulting from the wheel pressure is supported as pressure. As the screw 8, a closely aligned screw or an HV screw is preferably used. The running wheels 3 are housed in the corner support 9. This structural configuration and the considered mounting mode allow for a desirable assembly and problem-free repair of worn running wheels 3. A footrest 10 and a crane shock absorber 11 are further attached to the wheel boxes 6a and 6b.

A carrier wheel 12 is arranged between both end carrier halves 2a and 2b. The length of the support wheel 12 is determined so that the axle spacing of the traveling wheels 3 is achieved so that the wheel load is distributed as evenly as possible. The support wheel 12 has articulated pin joints 13 on both sides.
Is held by With these pin coupling parts 13,
Force transmission is guaranteed, including the crane and trolley carriage cushioning forces created by the traveling movements of the crane.

The support vehicle 12 has traveling wheels 3 on both lower sides.
Has a corner support 9 for. The articulated pin joint and the running wheel 3 are arranged vertically. But this is not a mandatory condition. Different arrangements are also possible which guarantee full functional capability as well.

At the four corners of a two-support bridge crane, running wheels 3 or smooth running wheels are used which have rims in combination with vertical guide rollers mounted on wheel boxes 6a and 6b. The running wheels 3 on the carrier 12 can theoretically be constructed without a track guiding element.
However, in this embodiment the running wheels 3 have rims in order to ensure the desired spare parts retention by this same configuration.

In contrast to the known crane traveling mechanism, in which the support in the crane structure has to be machined on a large special machine, both end transverse support halves 2a and 2 are used.
wheel box 6 due to the holes in the pin joints 7 and 13 in b.
a and 6b and the corner support 9 on the carrier 12,
Generally only work centers with conventional machining machines are needed.

After mechanical working, both end transverse support halves 2a and 2b can be welded to the main support 1. A detachable connection is not required as the split construction provides the desired carrying dimensions.

Relevant crane structure code, DIN 150
18-Principles for cranes, steel support mechanisms-The conditions of the guide ratio I / a (where I is the track width and a is the center distance of the track guide) are two-support bridge cranes. Protected against the four running wheels 3 at the corner.
The support for the pin connection of the carrier wheel 12, on the other hand, is dimensioned accordingly, depending on another reference value.

After completing the two-support bridge crane at the point of use, the crane travel mechanism and the track width of the crane track are measured once again. If both dimensions exceed a certain tolerance with respect to each other, the crane track width is changed. As a technical measure therefor, compensating rails of corresponding strength are mounted between the wheel housing 6a or 6b and the wheel support, respectively.

[Brief description of the drawings]

FIG. 1 is a side view of a two-support bridge crane.

2 is a side view and a plan view of an end transverse support half according to FIG. 1; FIG.

[Explanation of symbols]

 1 Main support 2 End crossing support 3 Running wheel 6 Wheel box 7 Pin connection part 8 Screw connection part 10 Foot rest 11 Crane shock absorber 12 Support vehicle 13 Pin connection part

Claims (7)

[Claims] 1. In a traveling mechanism for a two-support bridge crane having at least eight running wheels (3), both end transverse supports (2) are divided in the range of their vertical centerlines. And both end transversal support halves (2a and 2b), respectively, for their pin joints (7 and 13) of the wheel support in their outer end areas in the running direction on both sides. With one receiving hole,
And the running wheels (3) at the four outer corners of the two-support bridge crane are separate wheel boxes (6a and 6b),
These wheel boxes have pin joints (7) at joint joint points.
Is connected to the end transverse support (2) by means of which the articulation points are arranged to carry the torque resulting from the wheel pressure as pressure and a further separated wheel box (6a and 6b). , By means of screw connections (8) and on both end transverse support halves (2a and 2).
Between b), one support vehicle (12) is provided as each of two types of wheel supports with two crane running wheels (3) arranged one behind the other in the direction of travel, and the support vehicle (12) ) And end cross support halves (2a and 2b) each with one articulated pin connection (13). 2. A crane shock absorber (11) and a footrest (1)
0) Separate wheel box (6a and 6b) for housing
2 according to claim 1, characterized in that
Traveling mechanism for support bridge crane. 3. Articulation (1) provided between the support wheel (12) and the end transverse support halves (2a and 2b).
2. A two-support bridge according to claim 1, characterized in that 3) is configured to transmit all the forces resulting from the traveling movements of the crane and the trolley carriage, including the damping force of the crane and the trolley carriage. Traveling mechanism for small cranes. 4. The support vehicle (12) according to claim 1 or 3, characterized in that the axes of the crane traveling wheel (3) and the pin coupling portion (13) are arranged one above the other.
A traveling mechanism for a two-support bridge crane as described. 5. I is the track width, and a is the running wheel (3).
DIN15 as the center distance of the truck guide part of
Between the end cross support half body (2a or 2b) and the support vehicle (12) so that the center distance of the outer crane traveling wheel (3) can be estimated for the guide ratio I / a according to 018. Traveling mechanism for a two-support bridge crane according to claim 1, 3 or 4, characterized in that the pin connection (13) of (1) is constructed. 6. A horizontal guide roller can also be integrated in the separate wheel boxes (6a and 6b) as a track guide for the crane.
A traveling mechanism for a two-support bridge crane as described. 7. A technical means known per se for modifying the track width in the adjacent area after the completion of the two-support bridge crane at the point of use is provided. A traveling mechanism for a two-support bridge crane as described in 1.