JP2000016787A - Block conveying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently load and unload and convey wave-dissipating blocks, etc. SOLUTION: A support main body is formed into a gate shape comprising a transverse support frame 11 and a plurality of downwardly projecting leg portions 13, 13... so as to extend over a wave-dissipating block 1 to be conveyed. Each leg portion 13 is provided with a travel device in such a way that the directions of wheels 19, 19 can be freely varied. A lifting device comprising an outer frame member 24 or the like for lifting the wave-dissipating block 1 is supported against the support frame 11. The need for troublesome loading and unloading operations using a crane or the like is eliminated, and the wave- dissipating block can be properly displaced even in a small site. Each travel device is provided with the two wheels 19, 19 arranged in parallel in such a way as to freely rotate in the same direction and in the opposite direction. The two wheels 19, 19 are rotated in opposite directions whereby the directions of the wheels 19, 19 of the travel device can be varied.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a block conveyor capable of efficiently loading and unloading large blocks such as wave-dissipating blocks.

[0002]

2. Description of the Related Art FIG. 14 shows a conventional method of transporting a wave-breaking block 1. A concrete-made wave-breaking block 1 is transported by wrapping a wire around the wave-breaking block 1 and a hoist 7
, The wave-breaking block 1 is lifted, loaded on the trailer 9, the wave-breaking block 1 is moved to a predetermined place by the trailer 9, and the wave-breaking block 1 is lifted by another hoist 7 and lowered from the trailer 9. Was.

[0003]

SUMMARY OF THE INVENTION As described above, the hoist 7
When loading and unloading the wave-dissipating block 1, a complicated work of winding a wire around the wave-dissipating block 1 is required, and thus the work efficiency is poor, and the large-sized trailer 9 transports the wave-dissipating block 1. In such a case, the large trailer 9 has a large turning radius, so that there is a problem that it is difficult to move in a narrow place.

The present invention has been made in view of the above problems, and has as its object to efficiently load and unload large blocks such as wave-dissipating blocks.

[0005]

A feature of the present invention is that it is formed in a gate-shaped structure including a laterally supporting frame and a plurality of legs projecting downward from the supporting frame so as to straddle a block to be conveyed. A support device is provided, a traveling device is provided on each of the legs, and a lifting device for lifting the block is supported on the support frame. In addition, as the traveling device, either a crawler or a wheel can be used, and each traveling device can change its direction, and a plurality of wheels are provided in parallel so as to be rotatable in the same and opposite directions. Preferably.

When the block to be conveyed is provided with an upwardly projecting convex portion, the lifting device includes:
An annular gripping device is provided so as to be movable up and down so as to surround the convex portion from the outer peripheral side, and a plurality of gripping members are provided on the gripping device so as to protrude to the inner peripheral side and retreat so as to tighten the convex portion. Preferably.

When the block to be conveyed is provided with a plurality of laterally protruding projections, the lifting device includes a plurality of arm-like gripping members having a horizontal bar-like horizontal portion. It is preferable that the horizontal portion is provided to be openable and closable so as to be inserted below the convex portion.

The lifting device may lift the block to a height of at least one block.
In this case, it is preferable that a lifting device elevating frame is provided on the support frame so as to be able to raise and lower the height of at least one block, and the lifting device is supported on the lifting device elevating frame. .

[0009]

1 to 6 show a first embodiment of the present invention. FIG. 1 is a front view of a block conveyor,
FIG. 2 is a side view thereof. FIG. 3 is a front view of the traveling device in FIG. 1, and FIG. 4 is a side view of the traveling device with its wheels removed. FIG. 5 is a plan view of an outer frame member of the gripping device in FIG. 1, and FIG. 6 is a cross-sectional view taken along line AA of FIG.

As shown in FIGS. 1 and 2, the concrete wave-dissipating block 1 to be conveyed is provided with four projecting portions radially protruding at equal angular intervals. When placed, the three convex parts will be diagonally downward,
One convex portion faces upward.

The block carrier for transporting the wave-eliminating block 1 is provided with a support body composed of a support frame 11 and legs 13, 13,... It is formed in a gate shape with an open side. That is, the support frame 11 is formed in a rectangular frame shape that is long in the front and rear directions, and the legs 13 are provided to protrude downward from both left and right sides of the front and rear end portions of the support frame 11. The legs 13, 13,... Are connected at their lower ends to the left and right by a horizontal frame portion 13a.
It is reinforced by.

At the lower ends of the legs 13, 13,..., A traveling device including two parallel wheels 19, 19, etc., is mounted, respectively. It is configured to be rotatable in the opposite direction.
When the two wheels 19, 19 are rotated in opposite directions,
The entire traveling device turns with respect to the leg 13 and the wheels 19, 1
The direction (rolling direction) of No. 9 is changed.

That is, as shown in FIGS. 3 and 4, in the traveling device, a laterally upper member 16 is pivotally mounted on a vertical shaft-shaped fixing portion 16a fixed to the leg portion 13 and a fixing portion 16a. The pivot portion 16b is provided rotatably with respect to the leg portion 13 via a cylindrical revolving portion 16b fitted into the leg portion 13 and an eccentric portion 16c slightly protruding outward from the revolving portion 16b. And the upper member 16
Below, a horizontal lower member 17 is connected to be elastically movable up and down via a horizontal pivot pin 17a on the front end side and springs 17b, 17b on the rear end side. Therefore, the traveling device has a relatively small structure, and can appropriately absorb vibration during traveling.

On both side surfaces of the lower member 17, hydraulic motors 18 with built-in speed reduction mechanisms are fixed independently and rotatably in forward and reverse directions.
Wheels 19 and 19 made of rubber tires are mounted on 8 and 18, and the ground positions of the wheels 19 and 19 are below the eccentric portion 16 c. Therefore, when the direction of the wheels 19, 19 is deviated from the traveling direction when the block conveyor is traveling straight, a lateral force acts on the wheels 19, 19 so as to align the directions of the wheels 19, 19 with the traveling direction, Therefore, the directions of the wheels 19 of all the traveling devices are the same.

As shown in FIGS. 1 and 2, a lifting device lifting frame 21 is supported on a supporting frame 11 by hydraulic cylinders 22, 22. On the upper side, screw jacks 23 having a hydraulic buffer mechanism are supported. The screw jacks 23 constitute a lifting device,
The holding device including the outer frame member 24 and the like is supported so as to be able to move up and down.

As shown in FIGS. 5 and 6, the outer frame member 24 of the gripping device has an annular planar shape so as to surround the upwardly projecting portion of the wave-eliminating block 1 from the outer peripheral side. It is formed in a U-shaped cross section having an open groove. And
Two arc-shaped gripping members 25 are mounted in the inner circumferential groove of the outer frame member 24. Gripping members 25, 25
Has one end rotatably connected to the outer frame member 24 via pivot pins 25a, 25a, and the other end has pivot pins 26a.
a, 26a, the base end or the ram tip of the hydraulic cylinder 26 is connected, the gripping members 25, 25 are driven by the hydraulic cylinder 26 to project inward and retreat, and the upwardly projecting portions of the wave canceling block 1 are moved. Is to be tightened.
Note that rubber non-slip members 25b, 25b are adhered to the inner peripheral surfaces of the grip members 25, 25.

As shown in FIG. 1, an anti-swing device composed of hydraulic cylinders 27, 27 is provided on the legs 13, 13,... Of the support body to prevent the swing when the wave-breaking block 1 is lifted. So as to protrude inward and to be connected to the surface of the wave-dissipating block 1. Further, a support main body composed of the support frame 11 and the legs 13, 13,... Is provided with a hydraulic supply device 28, a wireless remote control device 29, and the like.

When the wave-dissipating block 1 is transported by the block transporter constructed as described above, first, the block transporter is moved to the side of the wave-dissipating block 1 by the traveling device including the wheels 19, 19,. . Then, the lifting device lifting frame 21 is lifted by the hydraulic cylinders 22, 22,..., And the outer frame member 24 of the gripping device is lifted above the wave-dissipating block 1. Then, the block transporter is moved sideways with the wheels 19, 19,... Of the traveling device toward the side, and straddles the wave-dissipating block 1 with the support body composed of the support frame 11 and the legs 13, 13,. Thus, the outer frame member 24 of the gripping device is positioned above the wave-eliminating block 1.

Next, with the gripping members 25, 25 of the gripping device retracted, the lifting device lifting frame 21 is lowered by the hydraulic cylinders 22, 22,... To break the annular outer frame member 24 of the gripping device. The block 1 is placed on the outer peripheral side of the upward convex portion.

Then, the outer frame member 24 of the gripping device is lowered at a relatively slow speed by the screw jacks 23, 23 so that the gripping members 25, 25 come into contact with the surface of the upwardly projecting portion of the wave-dissipating block 1. , The gripping member 2 by the hydraulic cylinder 26
5 and 25 are projected to the inner peripheral side, and the upward convex portion of the wave-eliminating block 1 is gripped by the gripping members 25 and 25 from the outer peripheral side. Then, the outer frame member 24 of the gripping device is raised at a relatively low speed by the screw jacks 23, 23,.

When the wave-breaking block 1 is lifted, the anti-swing device including the hydraulic cylinders 27 is connected to the surface of the wave-breaking block 1 to prevent the wave-breaking block 1 from shaking. Are moved to a predetermined place by a traveling device including... Accordingly, the vibrations during traveling are absorbed by the springs 17b, 17b of the traveling device, the wheels 19 made of rubber tires, and the screw jack 23 having the hydraulic shock absorbing mechanism. The block 1 can be suitably moved.

After the wave-eliminating block 1 is moved to a predetermined place, the outer frame member 24 of the gripping device is screwed into the screw jacks 23, 23.
.. Are lowered at a relatively slow speed to lower the wave-dissipating block 1 on the ground.
5 and 25 are retracted to open the upward projection of the wave-dissipating block 1. Then, the outer frame member 24 of the gripping device is raised at a relatively slow speed by the screw jacks 23, 23,... To separate the gripping members 25, 25 from the surface of the wave-dissipating block 1. Therefore, the wave-dissipating block 1 can be loaded and unloaded preferably without giving an impact to the wave-dissipating block 1.

As described above, the block transporter itself is provided with the gripping device including the outer frame member 24, the gripping members 25, 25, and the like, and is transported in a state where the wave-breaking block 1 is lifted. Loading and unloading and transport can be performed efficiently. In addition, by providing the traveling device including the wheels 19 and 19 so that the direction can be changed freely, the traveling device can be suitably moved even in a narrow place.

FIGS. 7 to 9 show a second embodiment of the present invention. FIG. 1 is a front view of a block conveyor, and FIG.
FIG. 9 is a plan view. The description of the same parts as in the first embodiment is omitted, and the same reference numerals are used.

On the concrete wave-dissipating block 2 to be conveyed, two convex portions are provided on the lower side so as to protrude forward and backward, and two convex portions are provided on the intermediate side so as to protrude right and left, and two convex portions are provided on the upper side. The two protrusions are provided to protrude forward and backward.

On a support frame 11 of a block transporter for transporting the wave-eliminating block 2, a lifting frame 121 constituting a lifting device is supported by hydraulic cylinders 122, 122 so as to be movable up and down. The frame 121 includes gripping members (horizontal portion 124 and vertical portions 125 and 12).
5), a gripping device composed of hydraulic cylinders 126, 126, etc. is supported.

The gripping member of the gripping device is formed in a U-shaped arm shape having a horizontal bar-shaped horizontal portion 124 and a vertical bar-shaped vertical portions 125, 125. The upper end portion of the portion 125 is connected to the center portion of the lifting frame 121 via a pivot pin 125a, and the horizontal portion 12
4 and 124 are provided to be openable and closable so as to be inserted below the upper front-rearward convex portion of the wave canceling block 2. A hydraulic cylinder 126 for driving the gripping member to open and close is mounted between an intermediate portion of each vertical portion 125 and an end portion of the lifting frame 121 via pivot pins 126a, 126a.

When lifting the wave-dissipating block 2 by the block conveyor having such a configuration, first, the horizontal portion 1
, And two arm-shaped gripping members including the vertical portions 125, 125 are opened by moving the horizontal portions 124, 124 upward and outward by hydraulic cylinders 126, 126,.
The lifting frame 121 is connected to hydraulic cylinders 122, 122,.
To lift the gripping member above the wave-dissipating block 2. Then, the block transporter is moved, and the support body composed of the support frame 11 and the legs 13, 13,... Straddles the wave-dissipating block 2 so that the gripping member composed of the horizontal part 124 and the vertical parts 125, 125 is held. It is positioned above the wave canceling block 2.

The two gripping members are closed by moving the horizontal portions 124, 124 downward and inward by hydraulic cylinders 126, 126,..., And the horizontal portions 124, 12 of the gripping members are closed.
4 is inserted below the upwardly-rearward convex portion of the wave-eliminating block 2. Then, the lifting frame 121 is connected to the hydraulic cylinder 12.
2, 122, and the horizontal portion 12 of the gripping member
The wave-dissipating block 2 is lifted so that the wave-absorbing blocks 4 and 124 are hooked on the upper and front convex portions of the wave-dissipating block 1. When the wave-dissipating block 2 is lowered, the operation is performed in the reverse of the lifting operation.

FIGS. 10 and 11 show a third embodiment of the present invention. FIG. 10 is a front view of a block transfer machine, and FIG. 11 is a side view thereof. The description of the same parts as in the first embodiment is omitted, and the same reference numerals are used.

The concrete wave-dissipating block 3 to be conveyed is provided with a plurality of holes in the center, and is formed in a rectangular parallelepiped shape having a flat upper surface and a lower surface. 224, 224 (described later) are provided with gripped portions to which lower ends are connected.

A lifting device elevating frame 221 is supported by hydraulic cylinders 222, 222 on the support frame 11 of the block conveyor for transporting the wave-eliminating block 3 so as to be able to move up and down. Is greater than or equal to the height of one wave-dissipating block 3.

The screw jacks 223, 22 having spring-type shock absorbers are mounted on the lifting device lifting frame 221.
3 ... are supported. Screw jacks 223, 223 ...
Constitutes a lifting device. Each screw jack 223 has a linear hanging member 224 such as a wire or a rod suspended vertically, and a lower end of the hanging member 224 has a wave-eliminating block 3. There is provided a gripping device such as a shackle connected to the gripped portion on the upper surface.

When the wave-breaking block 3 is lifted by the block conveyor having such a structure, first, the hanging members 224, 224,.
23, and the lower ends of the suspending members 224, 224,. Then, the block conveyor is moved, and the suspending members 224, 224,.
Is positioned above the wave-eliminating block 3.

Then, the suspension members 224, 224,... Are lowered by the screw jacks 223, 223,.
A gripping device such as a shackle at the lower end of 24, 224... Is connected to a gripped portion on the upper surface of the wave-dissipating block 3. Then, the suspension members 224, 224,... Are raised by the screw jacks 223, 223,. Also,
The lifting device lifting frame 221 is connected to the hydraulic cylinder 222,
222, the wave-eliminating block 3 can be lifted to a height of one or more wave-eliminating blocks 3.

When the suspended wave-absorbing block 3 is lowered, the suspension members 224, 224,.
23, 223... When the lifting device elevating frame 221 is raised to lift the wave-eliminating block 3 to a height equal to or more than one of the wave-eliminating blocks 3, the wave-eliminating block 3 is lifted. , And can be lowered by being stacked on the wave-dissipating block 3 already installed.

FIGS. 12 and 13 show a traveling apparatus according to a fourth embodiment of the present invention. In this embodiment, a crawler 30 is used instead of the wheel-type traveling device in the first to third embodiments described above, and the other parts are the same as those in the first, second, or third embodiment. Therefore, the description is omitted.

The crawlers 30 are attached to the lower ends of the four legs 13 in a fixed state, and each of the crawlers 30 is independently advanced by a drive motor (not shown).
It is installed so that it can move backward.

The crawlers 30 under the left and right legs are turned by driving them in opposite directions, and are driven forward or in a marching manner by driving them in the same direction.

In this embodiment, each crawler 30 may be provided so as to be able to change its direction in the horizontal direction around the vertical axis 31 with respect to each leg 13. By turning the crawlers 30 forward or backward in a desired direction, the crawlers 30 can turn and move forward and backward.

[0041]

According to the present invention, there is provided a portal-shaped support body comprising a lateral support frame and a plurality of legs projecting downward from the support frame so as to straddle a block to be conveyed. In addition, by providing a traveling device and supporting a lifting device for lifting the block on the support frame, complicated loading / unloading operations using a hoist or the like become unnecessary, and the moving device can be suitably moved even in a narrow place. Can be
Block loading and unloading and transport can be performed efficiently.

Further, by providing a plurality of wheels on the traveling device so as to be rotatable in the same direction and in the opposite direction, the wheels are rotated in the opposite direction so that the direction of the wheels of the traveling device is changed. It can be changed suitably.

If the block to be conveyed is provided with an upwardly projecting projection, the lifting device is provided with an annular gripping device so as to surround the upward projection from the outer periphery. The block can be suitably lifted by being provided so as to be able to move up and down and being provided with a plurality of holding members in the holding device so as to protrude and retreat on the inner peripheral side so as to tighten the upwardly projecting portion.

When the block to be conveyed is provided with a plurality of laterally protruding projections, the lifting device is provided with a plurality of arm-like gripping members having a horizontal bar-like horizontal portion. By providing the horizontal portion so as to be openable and closable so as to be inserted below the convex portion, the block can be suitably lifted.

In addition, the blocks can be stacked on the already installed blocks by lifting the blocks to a height of one or more blocks.

Further, a lifting device elevating frame is provided on the support frame so as to be able to move up and down at least one block at a height, and the lifting device is supported on the lifting device elevating frame, whereby the block is mounted. It can be suitably lifted to the height of one or more blocks.

[Brief description of the drawings]

FIG. 1 is a front view of a block conveyor according to a first embodiment of the present invention.

FIG. 2 is a side view of the block transporter of FIG.

FIG. 3 is a front view of the traveling device in FIG. 1;

FIG. 4 is a side view of the traveling device of FIG. 3 with wheels removed.

FIG. 5 is a plan view of an outer frame member of the gripping device in FIG.

FIG. 6 is a sectional view taken along line AA of FIG. 5;

FIG. 7 is a front view of a block transporter according to a second embodiment of the present invention.

FIG. 8 is a side view of the block transporter of FIG. 7;

FIG. 9 is a plan view of the block transporter of FIG. 7;

FIG. 10 is a front view of a block conveyor according to a third embodiment of the present invention.

FIG. 11 is a side view of the block transporter of FIG.

FIG. 12 is a side view showing a traveling device according to a fourth embodiment of the present invention.

FIG. 13 is a front view of the same.

FIG. 14 is an elevation view showing a conventional method for transporting a wave-eliminating block.

[Explanation of symbols]

 1, 2, 3 Wave-dissipating block 11 Support frame (support main body) 13 Leg (support main body) 13a Horizontal frame 13b Slanted frame 16 Upper member (traveling device) 16a Fixed portion 16b Revolving portion 16c Eccentric portion 17 Lower member (Traveling device) 17a pivot pin 17b spring 18 hydraulic motor (traveling device) 19 wheels (traveling device) 21 lifting device lifting frame 22 hydraulic cylinder 23 screw jack (lifting device) 24 outer frame member (gripping device) 25 gripping Member (gripping device) 25a Pivot pin 25b Slip member 26 Hydraulic cylinder (gripping device) 26a Pivot pin 27 Hydraulic cylinder (oscillation prevention device) 28 Hydraulic supply device 29 Wireless remote control device 121 Lifting frame (lift) Upper device) 122 Hydraulic cylinder (lifting device) 124 Horizontal portion (gripping member) 125 Vertical portion (gripping) Material) 125a pivot pin 126 hydraulic cylinder (gripping device) 126a pivot pin 221 lifting device lifting frame 222 hydraulic cylinder 223 jackscrew (hoisting device) 224 hanging member (hoisting device) 30 crawler 31 longitudinal axis

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroshi Ishii 2-82 Koraku, Bunkyo-ku, Tokyo Inside Goyo Construction Co., Ltd. (72) Inventor Osamu Hirabayashi 2-2-2, Koraku, Bunkyo-ku, Tokyo Goyo Construction Co., Ltd. (72) Inventor Yukio Kisara 1-3-6 Uchisaiwai-cho, Chiyoda-ku, Tokyo Nichetsu Corporation F-term (reference) 3F333 AA01 AB08 AE21 AE38 AF01 AF04 BA01 BD02 CA06 CA12 CA13

Claims (7)

[Claims] 1. A gate-shaped support main body comprising a lateral support frame and a plurality of legs projecting downward from the support frame so as to straddle a block to be conveyed,
A block transporter in which a travel device is provided on each of the legs, and a lifting device for lifting the block is supported on the support frame. 2. The block transporter according to claim 1, wherein a crawler is used as the traveling device. 3. The block transporter according to claim 1, wherein the traveling device is capable of changing its direction, and a plurality of wheels are provided in parallel so as to be rotatable in the same and opposite directions. 4. A block to be conveyed is provided with an upwardly projecting convex portion, and a lifting device is provided with a ring-shaped gripping device so as to ascend and descend so as to surround the convex portion from the outer peripheral side. ,
4. The block conveyor according to claim 1, wherein a plurality of gripping members are provided on the gripping device such that the plurality of gripping members protrude inwardly and retreat so as to tighten the convex portions. 5. 5. A block to be conveyed is provided with a plurality of laterally protruding projections, and a lifting device is provided with a plurality of arm-like gripping members having a horizontal bar-like horizontal portion. The block transporter according to claim 1, wherein the block transporter is openably and closably provided so as to be inserted below the convex portion. 6. A lifting device, wherein a block is one of said blocks.
The block transporter according to claim 1, wherein the block transporter is lifted at a height equal to or more than an individual unit. 7. A hoisting device elevating frame is provided on the support frame so as to be able to move up and down at least one block in height, and the hoisting device is supported on the hoisting device elevating frame. Item 7. A block transporter according to Item 6.