JPH08177013A - Folding road device - Google Patents

Abstract

PURPOSE: To reduce the force working to a working body while preventing the damage of the connecting sections of each road body by controlling the rocked states of each road body together by a cable and slowly rocking each road body when the main-side and front-side road bodies are rocked from an approximately vertical folded attitude to a horizontally developed attitude. CONSTITUTION: A frame 1, a main-side road body 4 capable of being erected and brought down to the frame 1 and a front-side road body 5 foldably connected at the front end section of the main-side road body 4 are provided. A first pulley 6 is mounted on the frame 1 and a second pully 7 on the main-side road body 4 while a cable-shaped body 21 is installed to the front-side road body 5. The cable 21 is stretched over the second pully 7 through the first pulley 6, and the front end section of the cable 21 is lnterlocked and coupled with a working body 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a case where a trolley is hung from a quay to a ship or the like for unloading and unloading cargo by a carrier, and a case where the quay is laid across from a shore to walk. The present invention relates to a foldable road device used in.

[0002]

2. Description of the Related Art Conventionally, a foldable road device of this type is shown in FIG.
As shown in FIG. 1, one columnar pedestal 1 having an actuating member 2 such as a winch is erected on the quay A side, and a pair of left and right support plates 3 are provided on the quay A near the pedestal 1 at predetermined intervals. The base end side of the rectangular base side road body 4 is supported on each of the support plates 3 via the shaft rod 31 so that the base side road body 4 can be undulated from a substantially vertical position to a horizontal position. While doing
A rectangular front side road body 5 is connected to the tip side of the base side road body 4 on the opposite side of the gantry 1 so as to be capable of undulating from a vertical position to a horizontal position like the base side road body 4. More specifically, the lengthwise front end side of the base side road body 4 and the front side road body 5 formed to be lighter in weight than the base side road body 4.
A pair of left and right projecting pieces 41, 51 facing each other are respectively provided on the base end side in the longitudinal direction of each of the projecting pieces 41, 5 and
By inserting the shaft rod 52 between the two, the front side road body 5 is connected to the base side road body 4 so as to be foldable in the range of the vertical position and the horizontal position. When the front side road body 5 is laid down in a horizontal position, the end faces of these road bodies 4 and 5 abut each other so that the expanded state can be maintained.

Further, a projecting rod 53 projecting in a direction opposite to the tip side of the road body 5 is provided on the base end side of the front side road body 5, and the tip end of the projecting rod 53 is projected. The end of the cord 21 wound around the actuating body 2 is bound to the stopper 54 provided.

When the above-mentioned folding road device is not used, however, as shown in FIG. 10, the pulling force of the cord 21 wound around the actuating body 2 causes the base side and the front side road bodies 4 to be pulled. , 5 are folded in a substantially vertical manner, that is, the original side road body 4 is folded in a substantially vertical posture with respect to the shaft rod 31 of the support plate 3, and the front side road body 5 is folded into each of the protrusions. The rod 52 is held in a substantially vertical posture so as to be parallel to the original side road body 4 via the shaft rod 52 inserted between the pieces 41 and 51.

When the base side bodies 4 and 5 are bridged from the quay A side to the opposite shore B, the cord 21 is loosened by the operation of the actuating body 2 provided on the gantry 1. Then, the original side and front side road bodies 4, 5 are folded in a substantially vertical posture, and the center of gravity of each of the road side bodies 4, 5 supports the base end side of the original side road body 4. Since it is located at a deviated position on the outer side opposite to the pedestal 1 with respect to the shaft rod 31 of the support plate 3, the each of the road bodies 4, 4 is loosened by loosening the cord 21. 5 is oscillated around the shaft rod 31 toward the opposite bank B side on the outer side of the mount,
That is, the base side of the base side road body 4 is supported by the shaft rod 31 of the support plate 3, while the front side road body 5 is on the opposite side of the base 1 of the base side road body 4. Since it is supported via the shaft rod 52, the center of gravity of each of the road bodies 4 and 5 is displaced to the outer side opposite to the gantry 1, and in this state, the cord 21 is placed. By loosening, the road bodies 4 and 5 are located opposite the shore B on the outer side of the gantry about the shaft rod 31.
It is rocked towards the side.

Further, as described above, when each of the road bodies 4, 5 is swung toward the opposite bank B side around the shaft rod 31, the base side road body 4 formed particularly heavier than the front side road body 5 is formed. As the base side road body 4 falls down due to the weight of the base side body 4, the cord body 21 stretched between the actuating body 2 and the projecting rod 53 provided on the tip side of the front side road body 5 is used. When the tension in the direction of pulling the front side road body 5 which is lighter than the side road body 4 acts, and when each of the road bodies 4 and 5 is swung toward the opposite bank B side, the cord 2
The projecting rod 53 of the front side road body 5 to which the front end side of 1 is bound,
The projecting pieces 41, 5 serving as the rocking fulcrums of the road bodies 4, 5
Since it is located on the upper side with respect to the shaft rod 52 between the two, as a result of the tension applied to the cord-like body 21, as shown in FIG. The road body 4 is expanded to the center, and in this expanded state, the entire road bodies 4 and 5 are swung toward the opposite bank B side.

Then, by continuing to relax the cords 21, finally, as shown in FIG. 12, the respective road bodies 4, 5 are developed horizontally, and the respective road bodies 4, 5 are expanded. Will be laid from quay A to the opposite shore B side.

[0008]

However, according to the folding type road device described above, the leading side road body 5 is the cord-shaped body 21.
However, since the original side road body 4 is supported in a free state between the front side road body 5 and the support plate 3 provided on the quay A side, When the respective road bodies 4 and 5 are swung from the state of FIG. 11 to the state of FIG. 12 due to the relaxation, the original side road body 4 which is heavy in the cord-like body 21.
Cannot be regulated, and the original side road body 4 suddenly rocks to the lodging side.

For this reason, when an actuating member consisting of a manual winch is used, for example, a very large operating force is required to prevent a sudden swing of the road body. Even when deploying with a large operating force,
It is difficult to extend the road bodies 4 and 5 to the opposite bank after they are completely deployed, and the tip of the front road body 5 is bridged to the opposite bank until the road bodies 4 and 5 are completely deployed. It is necessary to be able to do so, and there is a problem that the crossing distance in the case of the manual type becomes shorter than the deployment length of the road body. Further, in the case of using an electric winch or an actuating member composed of a fluid pressure cylinder, it is necessary to use one having a large horsepower, which is heavy and costly. Further, there is also a problem that the connecting portions of the road bodies 4, 5 are easily damaged in a short period of time due to the abrupt swinging of the road bodies 4, 5.

An object of the present invention is that when the base side body and the front side road body are deployed, the swinging state of each of the road body bodies can be regulated by a cord, and the base side road body is rapidly rocked to the collapse side. Provided is a foldable road device capable of gently swinging while restricting the original side road body with a cord-like body without causing it to do so and preventing damage to the connecting portion of each road body. To do.

[0011]

In order to achieve the above object, in the folding road device according to the invention of claim 1,
The base 1 comprises a base 1, a base side road body 4 which can be undulated with respect to the base 1, and a front side road body 5 which is foldably connected to a tip portion of the base side road body 4, and the base 1 has a first pulley. 6 is provided, the second pulley 7 is provided on the base side road body 4, and the front side road body 5 is provided.
The cord 21 is attached to the cable, the cord 21 is hung on the second pulley 7 via the first pulley 6, and the tip end of the cord 21 is linked to the actuating body 2.

According to the invention of claim 2, the first
A plurality of pulleys 6 are provided above and below the gantry 1 at a predetermined interval, and a plurality of second pulleys 7 are provided at a predetermined interval in the longitudinal direction of the original side road body 4. Two
The cords 21 are alternately hung on the pulleys 6 and 7.

Further, in the folding type road device according to the invention of claim 3, the base 1, the base side road body 4 which can be undulated with respect to the base 1, and the tip end portion of the base side road body 4 are freely foldable. And a first pulley 6 and a relay pulley 8 are provided on both left and right sides of the gantry 1, and a second pulley is provided on both left and right sides of the source side road body 4 and the leading side road body 5. Pulley 7 and third
A pulley 9 is provided, a cord 21 is attached to the gantry 1, and the cord 21 is attached to the second pulley 7 and the first pulley 6 on one side.
The third pulley 9 and the relay pulley 8 are sequentially hung, and the cord 21 is further attached to the relay pulley 8, the third pulley 9, and the first pulley on the other side.
While being hung on the pulley 6 and the second pulley 7 in sequence, the distal end portion of the cord 21 is linked to the actuating body 2.

[0014]

According to the invention of claim 1, when the folding type road device is not used, it is hung between the actuating body 2 and the leading side road body 5 via the first and second pulleys 6 and 7. Cord 21
Is pulled by the actuating body 2, and the pulling force holds the original side road body 4 in a substantially vertical position, and the leading side road body 5 is placed at an outer position on the opposite side of the gantry 1. It is placed and held in a substantially vertical posture so as to be parallel to the original side road body 4.

Then, when the base side and front side road bodies 4, 5 are to be bridged from the quay to the opposite shore, for example, the actuating body 2 is loosened, and the ropes are passed through the pulleys 6, 7 respectively. 21 while loosening the whole of the road bodies 4 and 5
Is rocked to the opposite bank opposite to the above, and at this time, as in the case of the conventional case described above, the source side and the leading side road bodies 4 and 5 are maintained in a substantially vertical posture, and each of these roads is maintained. Since the center of gravity of the bodies 4 and 5 is located at an eccentric position on the outer side opposite to the gantry 1 with respect to the support portion that supports the base end side of the base side road body 4, By loosening the shape body 21, each of the road bodies 4, 5 is swung toward the opposite bank side on the outer side of the gantry with the supporting portion as the center.

Further, as described above, when the respective road bodies 4, 5 are swung toward the opposite bank side, the actuating body 2 and the front road body 5 are accompanied by the original side road body 4 lying down. Tension in the direction of pulling the front side road body 5 acts on the cord 21 stretched between the pulleys 6 and 7 by the tension applied to the cord 21. , The front side road body 5 is expanded with respect to the base side road body 4 centering on the connecting portion of the both.
In this expanded state, the entire road bodies 4, 5 are swung toward the opposite bank. At this time, the pedestal 1 and the base side road body 4 are provided with the first and second pulleys 6 and 7, respectively, and the actuating body 2 and the front side road body 5 are connected via the respective pulleys 6 and 7. Since the cord 21 is stretched between the cords 2,
1, it is possible to gradually swing not only the front side road body 5 but also the front side road body 4 while swinging the respective road bodies 4 and 5 toward the opposite bank. The original side road body 4 can be gently rocked gradually while being restricted by the cord 21 without suddenly rocking the road body 4 to the laid side.

By continuing to relax the cord-like body 21 by operating the actuating body 2, the respective road bodies 4, 5 are finally developed horizontally, and the respective road bodies 4, 5 are finally expanded. Will be hung from the quay to the opposite shore. At this time, the cord-shaped body 21 stretched between the actuating body 2 and the leading-side road body 5 is provided on the first pulley 6 provided on the gantry 1 and the original-side road body 4. Since it is hung on the second pulley 7, when each of the road bodies 4, 5 is horizontally deployed from the quay to the opposite shore side and hung over, the cord-shaped body 21 by the actuating body 2
By stopping the relaxation, the front end surface of the base side road body 4 and the base end surface of the front side road body 5 abut against each other, and the expanded state can be maintained.

Further, when the above-mentioned road device is not used, contrary to the case described above, the cord 21 is pulled in the tension direction through the pulleys 6 and 7 by the operation of the actuating body 2. Then, the whole of each of the road bodies 4, 5 is swung toward the gantry 1 side and folded by the tensile force of the cord-like body 21. At this time, the first and second pulleys 6 and 7 are provided on the pedestal 1 and the base side road body 4, respectively, and between the actuating body 2 and the front side road body 5 via the respective pulleys 6 and 7. Since the cord-like body 21 is hung on the ridge, the cord-like body 21 swingably regulates both the front side road body 5 and the original side road body 4, and the respective path bodies 4 and 5 are mounted on the mount. 1 can be gradually gradually folded, and each of the road bodies 4, 5 can be used by unfolding them horizontally. It can be prevented. Further, when the respective road bodies 4, 5 are folded or unfolded, the second pulley 7 of the original side road body 4 acts as a dynamic pulley, so that the force acting on the actuating body 2 is changed by the pulleys 6, 6. Since it can be reduced to about 1/2 as compared with the case where 7 is not provided, therefore, for example, when an actuating member composed of a manual winch is used, the original side road member 4 can be swung rapidly especially with a small operating force. It can be easily unfolded and folded, and when using an electric winch or an actuating member consisting of a fluid pressure cylinder, this actuating member can be made small with a small horsepower, and it is lightweight, And it can be cheap. Further, even when using an actuating member composed of a manual winch, since it can be gradually expanded, it is possible to fully extend it and then cross it over, for example, on the opposite shore. It can be maximized. Further, since it is possible to gradually expand and fold it, it is possible to effectively prevent breakage of the connecting portions of the respective road bodies 4, 5, and it is possible to enhance the overall durability.

According to the second aspect of the present invention, the frame 1 is provided with a plurality of first pulleys 6 and the base side road body 4 is provided with a plurality of second pulleys 7, respectively. Since the cords 21 extending from the actuating body 2 are alternately hung on the actuators 7, each second pulley 7 provided on the original side road body 4 serves as a moving pulley and acts on the cords 21. The force can be further reduced as compared with the case where one second pulley 7 is provided, and therefore,
In the case of manual unfolding and folding operations, this operation can be easily performed with a smaller operating force, and in the case of automatic unfolding and folding operations such as electric / hydraulic operations, the operating body has a smaller horsepower. The size can be reduced, and the weight and cost can be further reduced.

Further, in the invention according to claim 3, the gantry 1
Since the pulleys are provided on both the left and right sides of the base side road body 4 and the front side road body 5, and the cord-like body 21 is hung on each of the left and right pulleys,
The force acting on the cord 21 can be reduced, and
The original road body 4 and the front road body 5 can always be gradually expanded and folded without the respective road bodies being twisted in the left-right direction.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The folding road device of the embodiment shown in FIGS. 1 to 3 is a pedestal 1 made of one columnar body standing on the quay A side.
And an operating body 2 such as a manual winch or an electric winch attached to the middle of the gantry 1 in the longitudinal direction, and the gantry 1
A pair of left and right support plates 3 provided at a predetermined interval on the quay A in the vicinity of, and a rectangular base side road body 4 whose base end side is supported by each support plate 3 via a shaft rod 31, On the tip end side of the base side road body 4 and on the side opposite to the gantry 1, a projecting piece 41 protruding from the tip side of the base side road body 4 and a base end side of the front side road body 5 are provided. And the rectangular front side road body 5 supported via the shaft rod 52 inserted between the projecting pieces 51, and the supporting structure of each of them is the same as the conventional one described above. The detailed description is omitted. In addition, on the one side in the width direction at the base end side of the front side road body 5, a projecting rod 53 integrally projecting toward the projecting piece 51 in a direction opposite to the tip end side of the front side road body 5 is integrally projected. A stopper 54 is provided at the tip of this rod 53.

Therefore, in the present invention, the first pulley 6 is provided on the upper part of the gantry 1, and the second pulley 7 is provided on one side in the width direction of the original side road body 4 and at the intermediate portion in the length direction. Rod 6
While supporting rotatably via 1, 71, the cord-like body 21 extending from the operating body 2 attached to the gantry 1 is hung on the second pulley 7 and the first pulley 6 It is bound to the stopper 54 provided on the projecting rod 53 of the road body 5.

Incidentally, the front side road body 5 is formed to be lighter in weight than the original side road body 4 like the conventional one described above. Further, as the actuating body 2, for example, a manual winch having an operation handle, an electric winch having a start / stop operation button of a motor, or the like is used, and as the cord-like body 21, for example, a wire or A rope, chain, or the like is used, and these cord-like bodies 21 are wound around a rotary drum or the like provided in the actuating body 2 so as to be able to move in and out. When a chain is used as the cord 21, the pulleys 6 and 7 are
It is a sprocket-shaped pulley.

When the above-mentioned folding road device is not used, as shown in FIG. 1, the first and second pulleys 6 and 6 are provided between the actuating body 2 and the projecting rod 53 of the front side road body 5. The cord-like body 21 hung via 7 is pulled by the actuating body 2, and the pulling force holds each of the source side and the leading side path bodies 4, 5 in a substantially vertical state, that is, this Former side road body 4
Is held so as to be in a substantially vertical posture with respect to the shaft rod 31 of the support plate 3, and the front side path body 5 is connected to the protrusions 41,
It is held in a substantially vertical posture so as to be parallel to the original side road body 4 through the shaft rod 52 inserted between the 51.

Therefore, when the original side and front side road bodies 4 and 5 are used by being stretched from the quay A to the opposite shore B side from the folded state of FIG. 1, the operating body 2 is loosened. , The cord 2 through the pulleys 6 and 7
While loosening 1, the whole of each of the road bodies 4, 5 is swung to the opposite bank B side opposite to the gantry 1. At this time, as in the conventional case described above, the original side and the front side The road bodies 4 and 5 are held in a substantially vertical posture, and the center of gravity of each of the road bodies 4 and 5 is set to the pedestal 1 with respect to the shaft rod 31 supporting the base end side of the original side road body 4. Is located at a deviated position on the opposite outer side, so that by loosening the cord-like body 21, the respective road bodies 4, 5 center around the shaft rod 31 and the opposite shore B side of the gantry. Is rocked towards.

Further, as described above, when the respective road bodies 4, 5 are swung toward the opposite shore B side around the shaft rod 31, especially the original side road formed to be heavier than the front side road body 5. As the base side road body 4 falls down due to the weight of the body 4, the cord-like body stretched between the actuating body 2 and the front side road body 5 via the pulleys 6 and 7. Since tension in the direction of pulling the front side road body 5 which is lighter than the original side road body 4 acts on 21, the tension applied to the cord 21 causes a light weight as shown in FIG. The front side road body 5 is expanded with respect to the base side road body 4 around the shaft rod 52, and in this expanded state, the whole of the respective road bodies 4 and 5 are swung toward the opposite bank B side. .

Then, by continuously relaxing the cord-like body 21, finally, as shown in FIG. 5, the respective road bodies 4, 5 are developed horizontally, and the respective road bodies 4, 5 are expanded. Will be laid from quay A to the opposite shore B side.

As described above, the road bodies 4, 5 are connected to the quay A
From the opposite shore B side, the gantry 1 and the base side road body 4 are provided with the first and second pulleys 6 and 7, respectively, and the working body 2 and the front end are connected to each other via the pulleys 6 and 7. Since the cord 21 is suspended between the side road body 5, the cord 21 restricts not only the forward side road body 5 but also the swinging of the original side road body 4, Each of these road bodies 4,
5 can be gradually rocked to the opposite bank B side,
Therefore, the original side road body 4 can be gently rocked gradually while being regulated by the cord 21 without suddenly rocking the original side road body 4.

Further, as described above, when the road bodies 4, 5 are horizontally developed and the road bodies 4, 5 are bridged from the quay A to the opposite shore B side, the actuation body 2 is provided. The cord-like body 21 stretched between the front side road body 5 and the front side road body 5 is hung on the first pulley 6 provided on the gantry 1 and the second pulley 7 provided on the original side road body 4. Since it is provided, by stopping the relaxation of the cord-like body 21 by the actuating body 2, the front end surface of the original side road body 4 and the base end surface of the front side road body 5 abut against each other to maintain the expanded state. It is possible.

Further, when the above-mentioned road device is not used, contrary to the above-mentioned case, the cord 21 is pulled in the tension direction through the pulleys 6 and 7 by the operation of the actuating body 2. Then, the whole of each of the road bodies 4, 5 is swung toward the gantry 1 side and folded by the tensile force of the cord-like body 21. At this time, the first and second pulleys 6 and 7 are provided on the pedestal 1 and the base side road body 4, respectively, and between the actuating body 2 and the front side road body 5 via the respective pulleys 6 and 7. Since the cord-like body 21 is hung on the ridge, the cord-like body 21 swingably regulates both the front side road body 5 and the original side road body 4, and the respective path bodies 4 and 5 are mounted on the mount. The ridges 41, 51 provided on the respective road bodies 4, 5 can be gradually gently folded to the first side, and the road bodies 4, 5 are horizontally spread and used in the same manner as in the case described above. It is possible to prevent damage to the shaft rod 52 and the like inserted between the protrusions 41 and 51. In addition, when the respective road bodies 4, 5 are folded or unfolded, the second pulley 7 of the original side road body 4 acts as a dynamic pulley, so that the force acting on the actuating body 2 is changed by the pulleys 6, 6. Since it can be reduced to about 1/2 as compared with the case where 7 is not provided, therefore, for example, when an actuating member consisting of a manual winch is used, the original side road body 4 is rapidly shaken especially with a small operating force. It can be easily unfolded and folded without moving it, and when an electric winch or an actuating member consisting of a fluid pressure cylinder is used, this actuating member can be made small in small horsepower, and that much. It can be made lightweight and inexpensive.

FIG. 6 shows another embodiment of the present invention. In FIG. 6, two first pulleys 6 and 6 are provided on the upper portion of the gantry 1 and on the lower position thereof. Rotatably supported by the two side pulleys 7 and 7 on one side in the width direction of the base side road body 4 and at the upper and lower portions in the middle in the length direction via the shafts 71, 71. Supported so that it can rotate,
A cord 2 extending from the actuating body 2 to each of the pulleys 6 and 7.
1 are alternately hung, and more specifically, the cord 21 is provided from the actuating body 2 side to the second pulley 7 on the lower side of the original side road body 4 and the lower side of the gantry 1. The first pulley 6, the second pulley 7 on the upper side of the original side road body 4, and the first pulley 6 on the upper side of the gantry 1 are sequentially hung, and the tip end side of the cord 21 is the tip. Side rod 5 thrust rod 5
It is bound to the stopper 54 provided on the No. 3. 1 to
The same parts as those in FIG. 5 are designated by the same reference numerals and the description thereof is omitted.

However, according to the embodiment of FIG. 6, when the respective road bodies 4, 5 are folded or unfolded, the two second pulleys 7 provided on the original side road body 4 serve as moving pulleys. The force acting on the actuating body 2 can be reduced to about 1/4 as compared with the case where the pulleys 6 and 7 are not provided. Therefore, for example, in the case of using an actuating member including a manual winch,
It is possible to easily deploy and fold with a smaller operating force than the embodiment of FIG. 5, and in the case of using an electric winch or an actuating member composed of a fluid pressure cylinder, this actuating member is used. Can be made smaller with a smaller horsepower, and can be made lighter, and the cost can be reduced.

Further, FIGS. 7 to 9 show another folding type road device. The road device is a pair of left and right pedestals 1 and 1 each of which is composed of a columnar body erected on the quay A and each of them. A pair of left and right support plates 3 and 3 provided at a predetermined interval on the quay A near the gantry 1 and, similarly to the case of FIGS. 1 to 6, via the rods 31 to the support plates 3 respectively. A supported rectangular base side road body 4, and a rectangular front side road body 5 supported on the tip side of the base side road body 4 on the side opposite to the gantry 1 via a shaft rod 52.
The same reference numerals are used for parts common to those in FIGS. 1 to 6, and description thereof is omitted.

In the embodiments shown in FIGS. 7 to 9, the actuating body 2 such as a winch is attached to the right side of the mounts 1, and the actuating body 2 extends from the actuating body 2 to the left side of the mount 1. A stopper 22 for attaching the distal end side of the cord 21 is attached, and the cord 21 is provided between the actuating body 2 and the stopper 22.
And when the cord-like body 21 is stretched, a pair of left and right first pulleys 6 and 6 is attached to the left and right sides of each of the pedestals 1 at intermediate portions in the longitudinal direction. 61,
It is rotatably supported via 61, and a pair of left and right relay pulleys 8 and 8 are provided on the upper side of each of the mounts 1 and 8 respectively.
1, which is rotatably supported and also has the above-mentioned base side path body 4
A pair of left and right second pulleys 7, 7 are provided on both the left and right sides of the axle rod 7.
While being rotatably supported via 1, 71, on the left and right sides of the front side road body 5 at the base end side, the tip end side of the front side road body 5 is opposite to the projecting piece 51 from one side in the width direction. A pair of left and right projecting rods 53, 53 projecting in the direction are provided so as to project from each of the projecting rods 5.
The third pulley 9 is rotatably supported on the shaft 3 via the shafts 91, 91.

Further, in the embodiment shown in each of the figures, a pair of left and right guides for guiding the cords 21 to the relay sheaves 8 are provided above the relay sheaves 8 on the gantry 1. The wheels 10 and 10 are rotatably supported by the shafts 11 and 11. Further, the pulleys 6, 7, 9 and 10 other than the relay pulley 8 are laterally supported at the left and right outer positions of the gantry 1, the original side road body 4 and the front side road body 5, respectively. Each of the relay pulleys 9 is supported in a rearward direction, which is reversed by 90 degrees with respect to the other pulleys. As each of the guide wheels 10, it is also possible to use another non-rotatable guide body having an arcuate surface capable of guiding the cord 21.

The cord 2 extending from the actuating body 2
1 is a second pulley 7 supported on the right side of the original side road body 4,
A first pulley 6 supported by the right side base 1, a third pulley 9 supported by the right side protruding rod 53 of the front side road body 5, and a guide wheel 10 supported by the right side base 1. Similarly, the relay pulley 8 also supported on the right side mount 1 is sequentially hung, and the cord 21 is attached to the relay pulley 8 supported on the left side mount 1, The guide wheel 10 supported by the left side base 1, the left side protruding rod 53 of the front side road body 5
The third pulley 9 supported by the first pulley 6, the first pulley 6 supported by the left side mount 1, and the second pulley 6 supported by the left side of the source side road body 4.
It is hung on the pulley 7 in sequence, and the tip end side of the cord 21 extending from the second pulley 7 is bound to the stopper 22 provided on the left side mount 1.

Therefore, when the above-mentioned folding type road device is not used, the original side and the front side road bodies 4, 5 are folded vertically, and the respective road bodies 4, 5 are expanded horizontally. In this case, the cord 21 is tensioned and loosened by operating the actuating body 2 provided on the right gantry 1. At this time, the cord 21 extending from the actuating body 2 is The second pulley 7, the first pulley 6, the third pulley 9, the relay pulley 8 and the guide wheel 10, which are supported on the left side of the gantry 1, the base side road body 4 and the front side road body 5, are sequentially hung from each other, and , The guide wheel 10, the relay pulley 8, the third pulley 9, the first pulley 6, and the second pulley which are supported on the right side of the gantry 1, the base side road body 4 and the front side road body 5
Since it is hung on the pulley 7 in sequence and the tip end side of the cord 21 extending from the second pulley 7 is bonded to the stopper 22 provided on the left side mount 1, it is different from the case of FIG. Similarly, each of the second pulleys 7 and each of the third pulleys 9 provided on the original side and front side road bodies 4 and 5 serve as moving pulleys, and the force acting on the actuating body 2 is transferred to the pulley 6 , 7 can be reduced to about 1/4 as compared with the case where it is not provided. Therefore, for example, in the case of using an actuating member consisting of a manual winch,
It can be easily deployed and folded with a smaller operating force than the embodiment shown in FIGS. 1 to 5, and in the case of using an electric winch or an actuating member composed of a fluid pressure cylinder, The operating body can be made smaller with a smaller horsepower, the weight thereof can be reduced, and the cost can be reduced. Further, it is possible to prevent the connecting portion of each of the road bodies 4 and 5 from being damaged. 1 and the left and right sides of the base side road body 4 and the front side road body 5 are provided with the above-mentioned pulleys as a set of left and right sides, respectively. It can be gradually expanded and folded without being twisted in any direction.

In each of the embodiments described above, the gantry 1
I attached the actuator 2 consisting of a winch to the
This actuation body 2 may be a hydraulic cylinder such as a hydraulic pressure arranged on the stationary side such as the ground.

Further, in each of the above embodiments, the base side road body 4 is formed to be heavier than the front side road body 5, but in addition, the base side road body 4 has the same weight as the front side road body 5, Alternatively, it may be formed to be lighter in weight than the front side road body 5. In this case, the length of the projecting rod 53 of the front side road body 5 is made longer than that shown in each drawing, and the above-described structure is provided from the binding position or the hanging position of the cord 21 to the projecting rod 53. The length between the shaft rods 52 and the tip of the front side road body 5 and the shaft rod 5
If the ratio with the length between the two is increased, or the first pulley 6
The guide wheel 10 and the relay pulley 8 are supported by the pedestal 1 at a lower position so that the cord 21 is pulled from a lower position. Further, the length of the rod 53 is increased and at the same time the first pulley is The supporting positions of 6, the guide wheel 10 and the relay pulley 8 are lowered.

Further, the road device of the present invention is used not only by hanging it from a quay to a ship, but also from the ground to a carrier such as a passenger car, or by hanging it between river banks. You can also do it.

[0041]

As described above, according to the first aspect of the invention, the gantry 1 is provided with the first pulley 6, the base side road body 4 is provided with the second pulley 7, and the front side road body 5 is provided. The cord 21 is attached to the cable, and the cord 21 is hung on the second pulley 7 via the first pulley 6 and the tip end of the cord 21 is linked to the actuating body 2. When the side and front side road bodies 4, 5 are unfolded and folded, not only can the swinging of the front side road body 5 be restricted by the cords 21, but also the swinging of the original side road body 4 can be performed. 21
It is possible to gradually expand and fold each of the road bodies 4 and 5 while restricting with the above, and since the second pulley 7 of the original side road body 4 acts as a moving pulley, The force acting on 2 can be reduced to about 1/2 as compared with the case where the pulleys 6 and 7 are not provided. Therefore, when using the actuating member composed of a manual winch, a small operating force is required. In particular, it is possible to easily deploy and fold the original side road body 4 without rapidly swinging it, and in the case of using an electric winch or an operating body composed of a fluid pressure cylinder, The actuating body can be made small with a small horsepower, and can be made lighter and less expensive.

Moreover, even when an actuating member comprising a manual winch is used, since it can be gradually expanded as described above, it can be fully expanded and then hung on the opposite bank, for example. In this case, the crossing distance can be maximized.

In addition, since it is possible to gradually expand and fold it, it is possible to effectively star the breakage of the connecting portion of each of the road bodies 4, 5 and improve the overall durability.

According to the second aspect of the invention, a plurality of the first pulleys 6 and a plurality of the second pulleys 7 are provided,
A cord 2 extending from the actuating body 2 to each of the pulleys 6 and 7.
In the case where one second pulley 7 is provided, the second pulleys 7 provided on the original side road body 4 serve as moving pulleys, and the force acting on the cord 21 is provided. Therefore, it is possible to make it even smaller than the above, and therefore, when manually expanding and folding, this operation can be easily performed with a smaller operating force. Also, automatic expanding and folding operations such as electric and hydraulic operations are possible. In this case, the operating body can be made smaller with a smaller horsepower, and the weight and cost can be further reduced.

Further, according to the invention as set forth in claim 3, pulleys are provided on the left and right sides of the gantry 1 and the original side road body 4 and the front side road body 5, and the cord-like body 21 is provided on each of the left and right pulleys. Since it is hung, the force acting on the cord-like body 21 can be reduced, and the source side road body 4 and the leading side road body 5 can always be gradually gradually twisted in the left-right direction. It can be unfolded and folded.

[Brief description of drawings]

FIG. 1 is a side view of a folding road device according to a first invention.

FIG. 2 is a front view of the same-path device.

FIG. 3 is a plan view of the same-path device.

FIG. 4 is a side view showing an intermediate working state when the base side body and the front side road body are deployed.

FIG. 5 is a side view showing a state in which an original side road body and a front side road body are developed.

FIG. 6 is a side view showing another embodiment.

FIG. 7 is a side view of a folding road device according to still another embodiment.

FIG. 8 is a front view of the same-path device.

FIG. 9 is a plan view of the same-path device.

FIG. 10 is a side view showing a conventional folding road device.

FIG. 11 is a side view showing an intermediate working state when the base side body and the front side road body of the same road device are deployed.

FIG. 12 is a side view showing a state in which an original side body and a front side passage body of the same-path device are expanded.

[Explanation of symbols]

 1 ... Stand 2 ... Actuator 21 ... Cord 4 ... Source side road 5 ... Destination side road 6 ... First pulley 7 ... Second pulley 8 ... Relay pulley 9 ... Third pulley

Claims (3)

[Claims] 1. A gantry (1), an original side road body (4) capable of undulating with respect to the gantry (1), and a front side road foldably connected to a tip end portion of the original side road body (4). A first pulley (6) is provided on the gantry (1), a second pulley (7) is provided on the original side road body (4), and the front side road body (5) is provided. The cord (21) is attached to the cord, and the cord (21) is attached.
Hanging on the second pulley (7) through the first pulley (6),
A foldable road device, characterized in that the distal end portion of the cord (21) is interlockingly connected to the actuating body (2). 2. A plurality of first pulleys (6) are provided above and below the frame (1) at predetermined intervals, and second pulleys (7) are arranged at predetermined intervals in the longitudinal direction of the original side road body (4). A plurality of cords (2) are provided on the first and second pulleys (6) and (7).
2. The folding road device according to claim 1, wherein 1) are hung alternately. 3. A gantry (1), an original side road body (4) which can be undulated with respect to the gantry (1), and a front side road foldably connected to a front end portion of the original side road body (4). A first pulley (6) and a relay pulley (8) are provided on both left and right sides of the gantry (1), and the base side road body (4) and the front side road body (5) are formed. A second pulley (7) and a third pulley (9) are provided on both left and right sides of the cord, a cord (21) is attached to the gantry (1), and the cord (21) is attached to the second cord on one side. The pulley (7), the first pulley (6), the third pulley (9) and the relay pulley (8) are hung in order, and further, the cord (21) is
The relay pulley (8), the third pulley (9), the first pulley (6), and the second pulley (7) on the other side are sequentially hung, while the distal end of the cord (21) is actuated ( A foldable road device characterized by being interlocked with 2).