JPS6027762B2 - Mobile bridge construction equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mobile bridge construction device, and more particularly to a mobile bridge construction device loaded on a vehicle and suitable for moving to any location and constructing a bridge in an emergency. be.

The mobile bridge construction device of the substructure will be explained with reference to FIGS. 1 to 6.

Figure 1 shows the running state when moving to the construction site. The bridge is divided into a front defense body 1 and a rear bridge body 2. The front bridge body 1 is placed on the undercarriage 3, with the rear bridge body They are stacked in a thin layer with 2 facing upward and move on the ground 4. The preagent roll 1 is supported by a bridge support drive device 6 provided on a swing boom 5. An intermediate arm 7 is provided on the swing boom 5 so as to be movable up and down by a cylinder 8, and the swing boom 5 can be tilted down by a cylinder 9. Rear bridge body 2
is supported by a front support wheel 10 provided on the lower surface of the front end, a fixing pin 12 provided on the rear arm 11, and a pin receiver 13 that is iron-fitted to the fixing pin 12. The rear arm 11 can be rotated about a center pin 15 by a cylinder 14. FIG. 2 shows the details of the A-A cross section in FIG. 1. By inserting and removing the fixing pin 12 into and out of the fixing pin receiver 13 using the cylinder 18, the post-containing container body 2 and the rear arm 11 are connected or separated. can be done. FIG. 3 shows the initial stage of joining the front bridge body 1 and the rear bridge body 2 at the construction site, in which the rear arm 11 is rotated rearward about the center pin 15 by the cylinder 14. Maneuver the rear bridge body 2 in the direction of the rear arrow (to the right in FIG. 3).

At this time, the rear bridge body 2 has support wheels 10 and fixing pins 12.
, is supported by a fixed pin receiver 13. FIG. 4 shows the next step in which the front split European body 1 is steered in the direction of the forward arrow (to the left in FIG. 4) by the bridge support drive device 6. At this time, the rear bridge Body 2 is in the direction of the arrow (fourth
In the figure, the front support wheel 10 on the lower surface of the front bridge body 1 comes off from the upper surface of the rear end of the precursor defense body 1, so the intermediate arm 7 is Push up the support wheel 10 in the direction of the arrow (in the upper right direction in Figure 4).
The front part of the rear bridge body 2 is supported instead. In addition, since the intermediate arm 7 cannot be pushed up while overlapping the front split bridge body 1, it is pushed up when the front bridge body 1 comes off in front of the intermediate arm.・FIG. 5 shows that after the front bridge body 1 has been further moved forward from the state shown in FIG.
The figure shows the process of lowering the intermediate arm 7 and lowering the rear bridge body 2 in the direction of the downward arrow in order to join the parts.

Figure 6 shows the state in which the connection between each bridge body has been completed using the upper connecting metal fitting 16 and the lower connecting metal fitting 17. In this state, in Kumama, the front bridge body 1 and the rear bridge body 2 are integrated into Since it is supported by the support drive device 6, support by the rear arm 11 is unnecessary, and the fixed pin 12 is pulled out from the fixed pin receiver 13, and the rear arm 11 is tilted backward so that it does not interfere with exposing the entire bridge. . Then, the bridge support drive device 6 is driven to extend the entire dovetail beam to the frontmost part (the left side in FIG. 6), and the swing boom 5 is forced by the cylinder 9 to construct the bridge on the ground 4 of the riverbank. In such a mobile tributary girder construction device, during the process of joining each bridge body, the movement of the bridge body must be temporarily stopped at the point where support by the intermediate arm is required, and the intermediate arm must be operated. When connecting and separating the arm from the rear bridge body, it is necessary to insert and remove the fixing pin, which makes the operation complicated and takes a long time. The disadvantage was that a mechanism for operation was required. The present invention is aimed at eliminating the above-mentioned drawbacks, and a notch is provided in a part of the pin holder fixed to the rear bridge body in an upward diagonal forward direction, and the pin of the rear arm or the rotatable part is provided in the notch. The present invention provides a mobile bridge construction device in which a support arm for a rear bridge body is fixedly attached to a rear arm, and a support arm for a rear bridge body is fixed to a rear arm.

An embodiment of the present invention will be explained with reference to FIGS. 7 to 13.

Figure 7 shows the running state when moving to the construction site as in Figure 1, and Figure 8 shows the B-B cross section in Figure 7, showing the front section stacked on the lower side. The bridge body 1 is supported by a bridge support drive device 6 provided on a swing boom 5. The rear bridge body 2 stacked horizontally on the upper side is supported by the front support wheels 10 provided on the lower surface near the front end and the rear support wheels 19 provided on the lower surface rearward from the center of gravity of the rear fence defense body 2. It is supported on the body 1. Note that 10 and 19 may be sliding sleds instead of wheels, or the front bridge body 1 and the rear bridge body 2 may be brought into direct contact and slid without providing these at all. Reference numeral 11 denotes a rear arm, and a shaft having a pin 20 or a rotatable roller attached thereto is fixed to the tip thereof.

Reference numeral 21 denotes a pin receiver fixed to the rear bridge body 2, and a part of the pin receiver 21 has a notch 22 that restrains the pin 20 from moving downward, but does not restrain the pin 20 from moving upward and diagonally forward. is opened obliquely upward and in the front direction, that is, in the opposite direction to the rearward line drawing direction of the post-containing body 2.

A pin 20 of the rear arm 11 is engaged with the notch 22. Reference numeral 23 denotes a support arm installed on the rear arm 11 which is rotated by the cylinder 14 around the center pin 15. The length and angle of the support arm 23 are determined by the rearward rotation of the rear arm 11. The tip of the support arm 23 is selected so as to come into contact with the lower surface of the rear split barrier body 2 when the body 2 is steered rearward and the rearmost part of the front body 1 comes near the rear support wheels 19, and In the state shown in FIG. 7, it is fixed to the rear arm 11 at a position that does not obstruct the forward line extension of the front split shield 1.

In this case, the pin receiver 21 of the rear front adjacent bridge body 2 and the rear arm 1
Unlike the case shown in FIG. 1, no load in the vertical direction is applied to the engaging portion of the pin 20 of FIG. 1, and the rear arm 11 only has the function of maneuvering the rear bridge body 2 rearward. Figure 9 shows the initial stage of joining the front bridge body 1 and the rear bridge body 2 at the construction site, and does not inhibit the rotation of the rear arm 11 and the support arm 23 fixed thereto. In order to do this, first, the front bridge body 1 is moved forward in the direction of the arrow (to the left in FIG. 9) using a bridge support drive device (not shown), and after a slight delay, the rear arm 11 is moved around the center pin 15 by the cylinder 14. The rear bridge body 2 is rotated rearward in the direction of the rear arrow (to the right in FIG. 9).

At this time, the rear bridge body 2 is supported by the front support wheels 10 and the rear support wheels 19, and the pin 20 moves upward in the notch 22 provided in the pin receiver 21. FIG. 10 shows the rear arm 11 rotated further rearward and the rear support wheel 1
9 shows the state just before it comes off from the upper surface of the rear end of the front new bulge body 1. At this time, the support arm 23 fixed to the rear arm 11 also rotates so that its tip is attached to the rear split bulge body 2. It comes into contact with the lower surface and can support a downward load, and pin 2
0 moves downward in the notch 22 provided in the pin receiver 21 and comes into contact with the bottom surface of the notch 22, so that it is in a state where it can support an upward load.

FIG. 11 shows a state in which the rear arm 11 has been slightly rotated rearward about the center pin 15 by the cylinder 4 from the state shown in FIG. The front support wheels 10 and the rear support wheels 19 are separated from the upper surface of the front bridge body 1, and the rear bridge body 2 is raised to the right diagonal direction (in the figure), and the front support wheels 10 and rear support wheels 19 are separated from the upper surface of the front bridge body 1.
Fully supported by 3.

In this state, the front split prevention groove body 1 is further advanced forward. FIG. 12 shows the next operation from FIG. 11, in which the rear arm 1 is rotated forward and the front end of the rear splitting hole body 2 is moved in the direction of the lower arrow (first direction).
In Figure 2, the front bridge body 1 is lowered diagonally downward to the left) and is connected to the front bridge body 1 using the upper coupling fitting 16. From this state onwards, the post-filling bridge body 2 is lowered to the left diagonally downward direction. 23
, so that no load acts on the pins 20 and 21.

FIG. 13 shows a state in which the rear arm 11 is further rotated forward from the state shown in FIG. The front bridge body 1 and the rear bridge body 2 are joined by the lower coupling fitting 17 and become one body.

The pin 20 of the rear arm 11 completely separates from the notch 22 of the pin receiver 21 fixed to the rear bridge body 2, and
The condition is such that there is no problem in moving the bridge to which the bridge body 2 is connected forward. From the state shown in Fig. 13, the bridge support drive device (not shown) is further driven to move the entire bridge to the forefront (
The swing boom 5 is moved to the left side in FIG. 13 by the cylinder 9, and the construction of the bridge on the ground of the river bank is completed. As explained above, the present invention provides a notch in an upward diagonal forward direction in a part of a pin receiver fixed to a rear bridge body constituting a bridge, and a pin of a rear arm or a rotatable pin in the notch. The simple structure of engaging the rollers and fixing the support arm to the rear arm eliminates the need for the pin insertion/removal operation and its operating mechanism when connecting and separating the rear bridge body and the rear arm, and also eliminates the need for the intermediate arm. - Since the arm and its operating mechanism are not required, the structure of the mobile bridge construction device can be simplified, and the operation during construction is easy and the time required for construction can be shortened.

[Brief explanation of the drawing]

Figures 1 to 6 explain a conventional mobile bridge construction device. Figure 1 is a side view showing the running state when moving to the construction site, and Figure 2 is the same as in Figure 1. Detailed cross-sectional view taken along line A-A, Figures 3 to 5 are side views showing the state of the joining process between the front bridge body and the rear bridge body, and Figure 6 shows the completed state of joining each bridge body. FIG. 7 to 13 are for explaining an embodiment of the mobile bridge construction device according to the present invention. , a detailed view of the cross section taken along line B-B in FIG. 7, FIGS. FIG. 3 is a side view showing a state in which the bridge body has been joined.
1... Front bridge body, 2... Rear bridge body, 3...
...Car chassis, 5...Swing boom, 6...
... Bridge support drive device, 10 ... Front support wheel, 11 ... Rear arm, 14 ... Cylinder, 15 ... Center pin, 16 ... Upper part joining metal fittings,
17... Lower coupling fitting, 19... Rear support wheel, 2
0...Pin, 21...Pin holder, 22...
...Notch, 23...Support arm. O figure ge 2 figure na J figure age 3 figure age 4 figure age 6 figure Shio 7 figure age 8 figure age? Illustration of the evening's drawing/illustration/Figure 2, Figure 3

Claims (1)

[Scope of Claims] 1. A bridge loading means that divides a bridge into two in the longitudinal direction and stacks them vertically on a chassis and moves them to an arbitrary bridge construction site, and a rear bridge that is stacked and loaded on the upper side of the bridge loading means. A bridge joining mechanism that connects the body and a front bridge body that is stacked and loaded on the lower side by moving them backward and forward, and a bridge that connects and separates the rear bridge body and a rear arm of the bridge body joining mechanism. In a mobile bridge construction device configured with an attachment/detachment mechanism, a notch is provided in a part of the pin receiver fixed to the rear bridge body, and a pin of the rear arm or a rotatable roller is engaged with the notch. A mobile bridge construction device characterized in that a supporting arm is fixedly attached to a rear arm. 2. The mobile bridge construction device according to claim 1, wherein the opening direction of the notch is opposite to the direction in which the rear bridge body is fed out at the time of joining and is diagonally upward. 3. The length and angle of the support arm are such that the rearmost part of the front bridge body is near the center of gravity of the rear bridge body when joined, and
The mobile bridge construction device according to claim 1, wherein the length and angle are such that the tip of the support arm comes into contact with the lower surface of the rear bridge body when the support arm is extended to the rear. 4. The mobile bridge construction device according to claim 1, wherein a rear support is provided on the lower surface of the rear bridge body at a position closer to the rear than the center of gravity of the rear bridge body. 5. The mobile bridge construction device according to claim 1 or 4, wherein the rear support is a wheel or a sliding sled.