JPH042174Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to an automatic bridge coupling device used for crossing rivers, etc. for tanks.

(Prior Art) A conventional bridge device will be explained with reference to FIGS. 14, 15, and 16. A is a traveling vehicle body, b and c are one and the other divided bridge bodies mounted on the same traveling vehicle body a, and d is the aforementioned traveling vehicle body. A is a boom whose lower end is pivotally connected to a, and e is a hydraulic cylinder that rotates the boom d around a pivot point at the lower end, one end of the hydraulic cylinder e is pivotally connected to the traveling vehicle body a; The other end of the boom d is pivotally attached to the upper right corner of the boom d. Also f
is a plate fixed to the upper left of the boom d, g
is an outrigger fixed to the same plate f, n is a boom detachably inserted into one of the split bridge bodies b,
Reference numeral h denotes an arm, one end of which is pivotally connected to the boom n, and the other end of the arm h is pivotally connected to the upper right corner of the boom d. In addition, i is a plate fixed to the boom d and protrudes downward, k is a hydraulic cylinder, one end of the hydraulic cylinder k is pivotally connected to the lower end of the plate i, and the hydraulic cylinder k is
The other end is pivotally connected to the arm h. In addition, p is a shaft that pivotally connects the joint ends of the one and the other split bridge bodies b and c, s is a hydraulic cylinder provided in the one split bridge body b, and t is a wire rope. One end of the wire rope t is attached to the hydraulic cylinder s, and the other end of the wire rope t is attached to the other split bridge body c,
When erecting one and the other split bridge bodies b and c over a river B etc., the hydraulic cylinder e is operated in the extension direction from the folded state of height _H1 , and the boom d is rotated to the left around its lower end. Then, one and the other divided bridge bodies b and c are turned from the _A1 position, which indicates the running state, to the _A2 position, and then to the _A3 position, so that they are in an upright state at a height of _H2 . At this time, the outrigger g is grounded. When this state is reached, the hydraulic cylinder e is operated in the extension direction, and the hydraulic cylinder k is operated in the contraction direction, so that one and the other divided bridge bodies b and c are operated.
Let it fall forward. At this time, the wire rope t is pulled, and the other divided bridge body c expands with respect to the one divided bridge body b, as shown in _A4 . Thereafter, the hydraulic cylinder e is operated in the extension direction, and the hydraulic cylinder k is operated in the contraction direction. At this time, the hydraulic cylinder s is operated in the contraction direction, and the one and the other divided bridge bodies b and c are lowered to the _A5 position, and are constructed over the river B or the like. Once this condition is reached, the boom n is separated from one of the split bridge bodies b to complete the erection work. Furthermore, when one and the other divided bridge bodies b and c are to be withdrawn, the procedure is reversed to that described above, and the one and the other divided bridge bodies b and c are stored on the traveling vehicle body a.

(Problems to be Solved by the Invention) In the conventional bridge device shown in FIGS. 14, 15, and 16, the joining ends of one and the other divided bridge bodies b and c are connected by a shaft p. There was a problem in that the divided bridge bodies b and c could not be separated when being withdrawn.

(Means for Solving the Problems) The present invention addresses the above-mentioned problems by butting one divided bridge body and the other divided bridge body while supporting them by a bridge support member provided on the traveling vehicle body. In the automatic bridge connecting device for removably connecting joint surfaces of each other, a recess and a movable hook are provided on the joint surface of the one divided bridge body, and a movable hook is provided on the joint surface of the other divided bridge body to engage the recess. a mating convex portion and a hook receiver that engages with the movable hook; a rotary drive device for the movable hook is provided on one of the split bridge bodies;
The rotary drive device for the movable hook is characterized by comprising a push rod pushed in by the convex portion, a pinion meshing with the rack of the push rod, and a hook shaft transmitting the rotation of the pinion to the movable hook.

An object of the present invention is to provide an improved automatic bridge connecting device that can automatically connect one and the other split bridge bodies when they are erected, and can disconnect them when they are being dismantled.

(Function) The automatic bridge coupling device of the present invention is configured as described above, and one divided bridge body and the other divided bridge body are supported by a bridge support member provided on a traveling vehicle body and brought into abutting state. At the same time, the concave portion provided on one of the divided bridge bodies is fitted into the convex portion provided on the other divided bridge body. At this time, the push rod of the movable hook rotation drive device provided on one of the split bridge bodies is pushed by the above-mentioned convex portion and retreats, and the pinion meshing with the rack etc. of the push rod rotates, causing the pinion to rotate. It is transmitted to the movable hook via the hook shaft, and the movable hook rotates.
Engage with the hook receiver provided on the other split bridge body,
The joint surface of one divided bridge body and the joint surface of the other divided bridge body are connected in abutting state. Also, the hook shaft is rotated in the opposite direction, the movable hook is removed from the hook receiver, and one divided bridge body is separated from the other divided bridge body.

(Example) Next, the automatic bridge connecting device of the present invention will be explained using an example shown in FIGS. 1 to 13.
1 in Figures 3 and 4 is a bridge, the bridge 1 is composed of one divided bridge body 5 and the other divided bridge body 6, and one divided bridge body 5 is composed of bridge bodies 7, 9 and the same bridge body 7, 9 and a connecting beam 11 that integrally connects the
The other divided bridge body 6 is the bridge bodies 8, 10 and the same bridge bodies 8, 1.
0 and a connecting beam 11 that integrally connects the two. Further, in FIGS. 2 and 4, reference numeral 2 denotes a traveling vehicle body, and 3 denotes a main jib provided on the traveling vehicle body 2. The main jib 3 supports one of the divided bridge bodies 5 in a detachable and movable manner. Further, reference numeral 4 denotes a support arm provided on the traveling vehicle body 2, and the support arm 4 supports the other divided bridge body 6 in a detachable and movable manner. In addition, 16 in FIGS. 1, 12, and 13 is one of the divided bridge bodies 5,
7, 9 and the other split bridge body 6, 8, 10, 12 in Fig. 3 is an upper hook device, and the same upper hook device 12 is shown in Figs. 1, 5, 6, 8, 9, 10. As shown, the joint surface 1 of one of the divided bridge bodies 5, 7, 9
The movable hook 28 is rotatably provided at the 6th part, and the hook receiver 32 is fixed to the joint surface 16 of the other divided bridge body 6, 8, 10. Further, 13 in FIG. 3 is a lower hook device, and the lower hook device 13 has a lower female hook 14 fixed to a joint surface 16 of one of the divided bridge bodies 5, 7, and 9 as shown in FIG. The lower male hook 15 is fixed to the joint surface 16 of the other divided bridge body 6, 8, 10. In addition, 17 in FIGS. 1 and 12 is a concave portion provided on the joint surface 16 of one of the divided bridge bodies 5, 7, and 9, and 18 is a convex portion provided on the joint surface 16 of the other divided bridge body 6, 8, and 10. be. Next, the movable hook 2
To explain the rotary drive device for the movable hook 8, reference numeral 19 in FIGS. It is attached to the joint surface 16 so that it can move forward and backward.
In addition, 19a is a rack provided on the push rod 19, and 21 is a joint surface 1 of one of the split bridge bodies 5, 7, and 9.
Spring holder fixed to part 6, 20 is the same spring holder 21
and the tip of the push rod 19, 22 is a pawl pivotally supported on the push rod 19, 23 is a pawl spring;
12 and 13, 27 is a hook shaft, 27a is a small diameter hook shaft, 26 is a one-way clutch interposed between the hook shafts 27 and 27a, and 24 is a joint surface 1 of one of the split bridge bodies 5, 7, and 9.
The same bearing 24 rotatably supports the hook shafts 27, 27a. Further, 25 is a pinion attached to the hook shaft 27a, to which the movable hook 28 is fixed. Also the 8th, 1st
In Figure 0, 29 is a toggle spring mechanism attached to the movable hook 28, 30 is a toggle spring, 31 is a lever stopper fixed to the joint surface 16 of one of the divided bridge bodies 5, 7, and 9, and 33 is fixed to the hook shaft 27. The lever 34 shown in Figs.
The mold release lever, 35 in FIGS. 5, 6, and 7 is a release petal attached to both sides of the main jib 3, 36 in FIG. 7 is a petal stopper, and 37 is a petal spring.

Next, the operation of the automatic bridge connecting device shown in FIGS. 1 to 13 will be explained in detail.

First, the concatenation operation will be explained. 1 and 2 show the state when connected, and .about. in FIG. 1 correspond to .about. in FIG. 2, respectively. As shown in FIGS. 1 and 2, the support arm 4 lowers the other divided bridge bodies 6, 8, 10 toward the one divided bridge body 5, 7, 9. Then, as shown in FIGS. 1 and 2, the lower male hook 15 is fitted into the lower female hook 14, and the other split bridge body 6, 8, 1
The lower part of 0 is connected to the lower part of one of the divided bridge bodies 5, 7, and 9. Next, as shown in FIGS. 1 and 2, one of the divided bridge bodies 5, 7, 9 is raised by the main jib 3, and the joint surface 16 of the same divided bridge body 5, 7, 9 is connected to the other divided bridge body. Joint surface 16 of 6, 8, 10
Closely contact. Then, the convex portion 18 pushes the push rod 19 from the state shown in FIG. Rotate in the direction of arrow a in the figure. When the push rod 19 is pushed in more than a certain amount, the pinion 25
At this time, as shown in FIG. 8, the spring upper end fitting 30a of the toggle spring mechanism 29
moves in the elongated hole from c to d, the movable hook 28 continues to rotate in the direction of arrow a, and engages with the hook receiver 32, so that the upper part of one divided bridge body 5, 7, 9 moves from the other divided It is connected to the upper part of the bridge bodies 6, 8, and 10.
After that, the toggle spring mechanism 29 continues to move the movable hook 28
is biased in the direction of arrow a, so the movable hook 2
8 will not come off from the hook receiver 32.

Next, the connection release operation will be explained. FIG. 4 shows a state in which one of the divided bridge bodies 5, 7, 9 and the other divided bridge bodies 6, 8, 10 are constructed over a river or the like. From this state, move the tip of the main jib 3 provided on the traveling vehicle body 2 to the other divided bridge body 6, 8, 1.
0, and then as shown in FIG.
0 onto the traveling vehicle body 2. At this time, the Y-shaped release lever 34 on the side of the split bridge bodies 7 and 8 and the release pedal 35 attached to both sides of the main jib 3
It operates as shown in the figure. Also, movable hook 28
When rotated to the position shown in FIG. 5, the spring upper end fitting 30 of the toggle spring mechanism 29 is rotated as shown in FIG.
a moves in the elongated hole from d to c, the movable hook 28 comes off the hook receiver 32, and one of the divided bridge bodies 5,
The connection between the upper parts of the bridges 7 and 9 and the upper part of the other divided bridge body 6, 8, and 10 is released. However, split bridge bodies 9, 10
The Y-shaped release lever 34 and release petal 35 on the side are
Since the directions are opposite to the Y-shaped release lever 34 and release petal 35 on the side of the divided bridge bodies 7 and 8, the Y-shaped release lever 34 and the release petal 35 on the side of the divided bridge bodies 9 and 10 are It operates as shown in the diagram. Note that after connecting one of the divided bridge bodies 5, 7, 9 and the other divided bridge bodies 6, 8, 10 as described above, when the bridge is extended from the traveling vehicle body 2, the Y-shaped release lever 34 and the release lever 34 must be pressed. The petal 35 operates as shown in Fig. 7,
If the Y-shaped release lever 34 simply pushes down the release petal 35, the Y-shaped release lever 34 will not rotate, and connection release will be avoided. Further, when the connection is released, the pinion 25 is in the state shown in FIG. 12, and rotates idly while pushing up the pawl 22, so that the push rod 19 does not move. In addition, as mentioned above, the upper part of one divided bridge body 5, 7, 9 and the other divided bridge body 6, 8,
When the connection with the upper part of the convex part 17 is released, the main jib 3 moves the convex part 17 as shown in Figs.
and the recess 18 are disengaged. Then, as shown in FIG. 13, the push rod 19 is moved forward by the push rod spring 20 built into the push rod 19, returning to the state before connection.
At this time, the pinion 25 is rotated by the pawl 22 in the direction of arrow b from the state shown in FIG.
It meshes smoothly with the rack 19a of No.9. Also, at this time, the hook shaft 27a on the pinion 25 side
There is a one-way clutch 26 between the hook shaft 27 on the movable hook 28 side, and the pinion 25
The hook shaft 27 and the movable hook 28 do not rotate. Therefore, the movable hook 28 remains held in the released position. Note that the one-way clutch 26 transmits only the torque from the pinion 25 (see arrow a in FIG. 10) or the torque from the hook shaft 27 (see arrow b in FIG. 10). By the above operation, the upper hook device 1
2 returns to the state before connection.

(Effects of the Invention) As described above, the automatic bridge coupling device of the present invention supports one divided bridge body and the other divided bridge body by a bridge support member provided on a traveling vehicle body, and faces each other in abutting state. A recess provided on one divided bridge body is fitted into a convex portion provided on the other divided bridge body. At this time, the push rod of the movable hook rotation drive device provided on one of the split bridge bodies is pushed by the above-mentioned convex portion and retreats, and the pinion meshing with the rack of the push rod rotates, and the rotation of the pinion is caused by the hook shaft. The information is transmitted to the movable hook via the movable hook, which rotates and engages with the hook receiver provided on the other split bridge body, thereby connecting the joint surface of one split bridge body with the joint surface of the other split bridge body. are concatenated in a butt state. Also, the hook shaft is rotated in the opposite direction, the movable hook is removed from the hook receiver, and one divided bridge body is separated from the other divided bridge body. This has the advantage that one and the other split bridge bodies can be automatically connected when being erected, and can be separated when being dismantled.

[Brief explanation of the drawing]

Figures 1 and 2 are explanatory diagrams of the operation of an embodiment of the automatic bridge connection device according to the present invention, Figure 3 is a plan view, and Figure 4 is a plan view.
The figure is a side view during installation, Figures 5, 6, and 7 are diagrams explaining the operation of the disconnection mechanism, Figure 8 is a diagram explaining the operation of the toggle spring mechanism, and Figure 9 is a plan view of the pinion, hookshaft, and movable hook part. , Fig. 10 is a side view of the same part, Fig. 11 is a longitudinal sectional front view taken along the line XI-XI in Fig. 10, and Figs. 12 and 13 are taken in the direction X in Fig. 9.
14 is a side view showing a conventional bridge device, FIG. 15 is a side view showing an enlarged part of the device, and FIG. 16 is an explanatory view of its operation. 1... Bridge, 2... Traveling vehicle body, 3, 4... Bridge support member, 5, 7, 9... One split bridge body, 6,
8, 10...The other split bridge body, 16...Joint surface,
17...Concave portion, 18...Convex portion, 19...Push rod, 19a...Rack, 25...Pinion,
27, 27a...Hook shaft, 28...Movable hook, 32...Hook receiver.

Claims (1)

[Scope of utility model registration request] In an automatic bridge connecting device that connects one divided bridge body and the other divided bridge body to each other while being supported by a bridge support member provided on a traveling vehicle body and removably connects the joint surfaces of the two divided bridge bodies, the one divided bridge body A recess and a movable hook are provided on the joint surface of the other split bridge body, and a protrusion that engages with the recess and a hook receiver that engages with the movable hook are provided on the joint surface of the other split bridge body, A rotary drive device for a movable hook is provided on the body, and the rotary drive device for the movable hook is connected to a push rod that is pushed in by the convex portion, a pinion that meshes with a rack of the push rod, and a hook shaft that transmits the rotation of the pinion to the movable hook. An automatic bridge connection device characterized by comprising: