JPH09227065A - Revetment concrete block hoisting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently stack revetment concrete blocks. SOLUTION: This revetment concrete block hoisting device is provided with a fixed pinching member 8 hooking the front section 1a of a concrete block 1, a moving pinching member 10 pivotally supported on the fixed pinching member 8 and hooking the rear section of the concrete block 1, a hoisting frame 12 hoisting the fixed pinching member 8 via a pivotal shaft 11, a coupling member 14 pivotally supported on the fixed pinching member 8 and coupled with the front section 1a of the concrete block 1, a fixed pinching member driving means 15 rotating the fixed pinching member 8, a moving pinching member driving means 16 rotating the moving pinching member 10, and a coupling member driving means 17 rotating the coupling member 14. The hoisting frame 12 is suspended by a hoisting means 19 via hoisting cords 18 arranged into a cross shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hoisting device for a concrete block for revetment for constructing a river embankment, building a residential land on a sloping land, and a road side wall in a mountainous area.

[0002]

2. Description of the Related Art FIG. 12 shows a concrete block 1 for revetment.
Figure 1 shows an example of a block front portion 1A having a rectangular front portion 1a, and a block-shaped block rear portion 1B protruding rearward from the block front portion 1A, An octagonal rear surface portion 1b is formed on the block rear portion 1B, and four groove portions 1c are formed on the rear side surface of the block rear portion 1B along the front-rear direction at intervals of about 90 °.

Conventionally, the concrete block for revetment 1
In the case of stacking, as shown in FIGS. 13 and 14, after arranging the substrate 3 on the sloped earth wall 2 of the site where the revetment is to be constructed at a predetermined inclination angle, a large number of concrete blocks 5 for foundation are placed on the ground 4. Are arranged in contact with each other, and the rear surface of each block 5 is brought into contact with the substrate 3 to position each block 5. After that, the groove 5a of each block 5
And the support rod 6 is erected at a predetermined position on the ground 4,
Fresh concrete 7 is filled between the blocks 5 to such an extent that the upper ends of the support rods 6 are not hidden.

After that, a wire is hung on the revetment concrete block 1, and the revetment concrete block 1 is lifted by a hoist or the like through the wire and conveyed to above the foundation concrete block 5, and then the revetment concrete block 1 Is placed on the concrete for foundation 5 and the groove portion 1c on the lower surface side of each of the concrete blocks for revetment 1 is engaged with the upper end of each of the supporting rods 6, and the concrete block for revetment 1 The rear surface portion 1b is brought into contact with the substrate 3, and thereby the revetment concrete block 1 in the first stage is positioned. After that, the concrete blocks 1 for the second and subsequent seawalls are sequentially stacked in the same procedure.

[0005]

According to the above-mentioned conventional structure, the wire is simply hung on the concrete wall 1 for revetment, and the concrete block 1 for revetment hung up through the wire is used for transportation. Since it sways in the horizontal direction due to vibration, and the swaying continues forever, it took time to pile up the concrete blocks 1 for revetment, the work efficiency was low, and the construction period was prolonged.

In view of the above problems, it is an object of the present invention to provide a concrete revetment concrete block hoisting device capable of efficiently stacking concrete revetment concrete blocks.

[0007]

The structure of the present invention for achieving the above object will be described with reference to the drawings corresponding to the embodiments. According to the invention of claim 1, a plurality of revetments are in alignment with each other. Front part 1 of concrete block 1 for concrete
A fixed holding member 8 for locking a, and a movable holding member 8 rotatably supported by the fixed holding member 8 via a pivot shaft 9 so as to lock the rear portion of each concrete block 1 in a disengageable manner. Clamping member 10, lifting frame 12 that rotatably hangs said fixed clamping member 8 via pivot shaft 11, and supporting shaft 1 along said front and rear direction of concrete block 1 on said fixed clamping member 8.
3 and a plurality of engaging members 14 that are rotatably supported by way of 3 and that engage with the front surface portion 1a of each concrete block 1, and rotate the fixed holding member 8 around a pivot shaft 11. A fixed holding member driving means 15 for moving the movable holding member 10 is provided on the lifting frame 12, and a movable holding member driving means 16 for rotating the movable holding member 10 about the pivot shaft 9 is provided on the fixed holding member 8. A concrete block hoisting device for seawall protection in which an engaging member driving means 17 for rotating each of the engaging members 14 around a support shaft 13 is provided in the fixed holding member 8, wherein the hoisting frame 12 includes: It is hung from a hoisting means 19 via hoisting strings 18 arranged in a cross shape.

In the above structure, when the concrete blocks 1 in the aligned state are hoisted and transferred to the construction site, the engaging member 14 is rotated 90 ° to the right or left by the engaging member driving means 17, and After inclining the direction according to the direction of the concrete block 1, the engaging member 14
Concrete block 1 by means of fixed clamping member 8 through
Of the concrete block 1 is locked by rotating the movable holding member 10 by the movable holding member driving means 16 while locking the front portion 1a of the above, and then the lifting frame is lifted by the lifting means 19 via the lifting string 18. By pulling 12 up, each concrete block 1 is lifted through both sandwiching members 8 and 10, and the fixed sandwiching member 8 is rotated by the fixed sandwiching member driving means 15 to be in a horizontal state, so that each concrete block 1 is stabilized. Support it and transfer it to the construction site.

In this case, since the hoisting cords 18 are arranged in a cross shape, even if the revetment concrete block 1 hoisted through the hoisting cords 18 shakes in the horizontal direction due to vibration during transportation, the hoisting cords 18 Since the intersecting portions of 18 interfere with each other to rapidly dampen the shaking, the work of stacking the concrete wall 1 for revetment can be efficiently performed, and the construction period can be remarkably shortened. Further, the lifting work of each concrete block 1 can be automatically performed, and also in this respect, the work of stacking the concrete blocks 1 for revetment can be performed efficiently.

According to a second aspect of the present invention, in the first aspect of the invention, the movable holding member 10 that locks the rear portion of each concrete block 1 in a disengageable manner elastically acts on both side surfaces of the rear portion of the concrete block 1. It is composed of a pair of clamping arms 10b that are clamped to each other.

According to the above structure, the pair of holding arms 10 is provided.
By b, both sides of the rear part of the concrete block 1 can be elastically sandwiched and the concrete block 1 can be reliably lifted.

Further, when the hoisted concrete block 1 is installed on the planned revetment site, both sides of the rear portion of the concrete block 1 are held by the pair of holding arms 10b, and the rear surface portion 1 of the concrete block 1 is held.
Since b is open, the rear surface portion 1b can be brought into contact with the substrate 3 (see FIG. 14) provided on the sloped earth wall 2 of the revetment construction site, and the positioning can be reliably performed.

According to a third aspect of the present invention, in the second aspect of the present invention, the pair of holding arms 10b are provided with fitting members 39 which are fitted into the groove portions 1c formed on both side surfaces of the rear portion of the concrete block 1. There is.

According to the above construction, by rotating the pair of holding arms 10b forward around the pivot shaft 9, the fitting members 39 provided on the pair of holding arms 10b are attached to the rear side surfaces of the concrete block 1. The concrete block 1 can be more surely lifted by being fitted into the groove portion 1c formed in the concrete block 1.
After installation on the planned revetment site, the pair of sandwiching arms 10b are rotated backward around the pivot shaft 9 to disengage the fitting member 39 from the groove 1c, and the concrete block formed by the pair of sandwiching arms 10b. The pinched state of 1 can be easily eliminated.

The invention according to claim 4 is the pinion 27 according to any one of claims 1 to 3, wherein the fixed holding member driving means 16 is fixed to the pivot shaft 11.
It comprises a linear motion drive device 25 for linearly reciprocating the rack 26 that meshes with the rack 26. The linear motion drive device 25 and the rack 26 are attached to the suspension frame 12 in an inclined or horizontal manner.

According to the above construction, the linear motion drive device 25
Since the rack 26 and the rack 26 are attached to the hoisting frame 12 in a slanting or horizontal manner, if the linear motion drive device 25 and the rack 26 are vertically set here, the lower end of the rack 26 is made of concrete. There is a possibility that it may project below the block 1 and come into contact with the ready-mixed concrete 7 (see FIG. 14), but this risk can be prevented.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a state in which a plurality of concrete blocks 1 aligned with each other are hoisted by a concrete block hoisting device according to an embodiment of the present invention, and the hoisting device is used for a plurality of revetments in an aligned state. Each front part 1a of the concrete block 1
And a fixed holding member 8 for locking the
A movable holding member 10 that is rotatably supported by a pivot shaft 9 and that locks the rear portion of each concrete block 1 in a disengageable manner; and the fixed holding member 8 via a pivot shaft 11. A hoisting frame 12 that rotatably hoists, and a support shaft 13 that extends along the front-rear direction of the concrete block 1 on the fixed holding member 8.
And a plurality of engaging members 14 which are rotatably supported by means of and which engage with the front surface portion 1a of each concrete block 1, and rotate the fixed holding member 8 about a pivot shaft 11. A fixed holding member driving means 15 is provided on the hoisting frame 12, and a movable holding member driving means 16 for rotating the movable holding member 10 about the pivot shaft 9 is provided on the fixed holding member 8. Engaging member driving means 17 for rotating each engaging member 14 around the support shaft 13 is provided in the fixed holding member 8, and the lifting frame 12 is provided with a lifting string 18 made of a wire or the like arranged in a cross shape. It is suspended via a bucket 19a (lifting means) of a hydraulic excavator 19 (see FIG. 10A).

As shown in FIGS. 1 and 2, the fixed holding member 8 is in the shape of a rectangular box that is horizontally long in front view, and has a pair of support rods 21 and 21 extending rearward from the upper end thereof, and each of the support rods 21 and 21. Both sides 12a of the gate-shaped hoisting frame 12 having the hanging rods 22 and 22 hanging from the supporting rods 21 and 21 and via the pivot shafts 11 projecting from the hanging rods 22 and 22. , 12
a.

The fixed holding member driving means 15 is an electric hydraulic cylinder (linear motion driving device) 25 attached to an inclined rod 24 extending obliquely upward from the lower ends of both side portions 12a of the hoisting frame 12 toward the front. It comprises a rack 26 which is linearly reciprocated by the electric hydraulic cylinder 25, and a pinion 27 which meshes with the rack 26 and is fixed to the pivot shaft 11. 28 is a side part 12a, 12a
It is a rack support block fixed to.

In the above structure, the electric hydraulic cylinder 25
By driving and reciprocating the rack 26, the fixed holding member 8 can be displaced from the vertical posture shown in FIG. 1 to the horizontal posture shown in FIG. 8 via the pinion 27 and the pivot shaft 11.

Here, the electric hydraulic cylinder 25 and the rack 2
Since 6 and 6 are attached to the hoisting frame 12 in an inclined shape, if the electric hydraulic cylinder 25 and the rack 26 are vertically arranged here, the lower end of the rack 26 is located below the concrete block 1. Although there is a risk of projecting and contacting the ready-mixed concrete 7 (see FIG. 14), this risk can be prevented. The electric hydraulic cylinder 25 and the rack 26 may be horizontally attached to the hoisting frame 12, as indicated by a phantom line in FIG. 1. Further, instead of the linear movement mechanism including the electric hydraulic cylinder 25, the rack 26, and the pinion 27, for example, a crank mechanism or a chain mechanism may be used.

As shown in FIGS. 2 and 3, the engaging member 14 is a support plate 14a that abuts the front surface 1a of the concrete block 1, and is integrally formed with the support plate 14a.
The support plate 14a is rotatably supported by the fixed holding member 8 via the support shaft 13 projecting in the central portion of the support plate 14a, and the protrusion 14b is fitted into the recess 1d of the front face 1a of the concrete block 1. A circular arc guide hole 30 is formed on the back plate of the fixed holding member 8 over a range of 90 ° about each support shaft 13, and the guide roller 31 protruding from each support plate 14a is fitted into each guide hole 30. And a connecting rod 32 for integrally connecting the roller shafts of the respective guide rollers 31 to each other.

The engaging member driving means 17 comprises an arm 34 fixed to one of the support shafts 13 and a hydraulic cylinder 35 for reciprocally rotating the arm 34.

In the above structure, by driving the hydraulic cylinder 35 to expand and contract, the engaging members 14 can be integrally rotated about the support shaft 13 and tilted to the right or left. The hydraulic cylinder 35 and the arm 3
A rack and pinion mechanism, a crank mechanism, a chain mechanism, or the like may be used instead of the engaging member driving means 17 composed of four.

As shown in FIGS. 3 to 6, the movable holding member 10 is externally attached to the pivot shaft 9 rotatably supported by both supporting rods 21 and 21 of the fixed holding member 8 via bearings 37. A tubular portion 10a fitted and fastened to the pivot shaft 9 by a fastening tool 38 made of a bolt and the like. The both side surfaces of the rear portion of the concrete block 1 are elastically projecting from the tubular portion 10a at a predetermined interval. Pair of clamping arms 10b, 10 for mechanically clamping
b, a fitting pin (fitting member) 39 that fits into the groove 1c of the concrete block 1 is provided at the tip of each holding arm 10b, 10b. Incidentally, 40 is a connecting rod for connecting the base end portions of the pair of holding arms 10b, 10b.

The movable holding member driving means 16 is provided between the arm 42 fixed to the pivot shaft 9 and the arm 42 and the fixed holding member 8, and the pivot shaft 9 is provided via the arm 42. And a hydraulic cylinder 43 that reciprocally rotates. Reference numeral 44 is a hydraulic drive mechanism.

In the above structure, when the hydraulic cylinder 43 is driven to extend from the state shown by the phantom line in FIG. 3 to rotate the pivot shaft 9 counterclockwise, the block rear portion 1B of the concrete block 1 is tapered. Since it is formed in
As shown by the solid line in the figure, the pair of clamping arms 10b, 10
A fitting pin 39 provided at the tip of b is fitted into the groove 1c of the concrete block 1, and the pair of holding arms 10
Both side surfaces of the rear portion of the concrete block 1 can be elastically sandwiched by b and 10b, whereby the concrete block 1 can be reliably lifted.

Here, when the hoisted concrete block 1 is to be installed on the planned revetment site, the pair of clamping arms 10b, 1 are provided on both sides of the rear part of the concrete block 1.
It is clamped by 0b and its concrete block 1
Since the rear surface portion 1b is opened, the rear surface portion 1b can be brought into contact with the substrate 3 (see FIG. 14) provided on the sloped earth wall 2 of the revetment construction site to be surely positioned.

Further, even after the concrete block 1 is installed on the planned revetment site, even if the hydraulic cylinder 43 is reduced and the pair of clamping arms 10b, 10b are rotated rearward about the pivot 9, the pair of clamping arms 10b, 10b is rotated. The holding arms 10b, 10b of FIG. 3 do not hit the substrate 3 (see the phantom line in FIG. 3), the fitting pin 39 can be removed from the groove portion 1c, and the holding state of the concrete block 1 by the pair of holding arms 10b, 10b is eliminated. be able to. A rack and pinion mechanism, a crank mechanism, a chain mechanism, or the like may be used instead of the movable holding member driving means 16 including the hydraulic cylinder 43 and the arm 42.

As shown in FIGS. 1 and 7, two hoisting cords 18 are provided, and the two hoisting cords 18 are provided.
Are crossed in an X shape, the upper end loop portion 18a is wound around a horizontal rod 46 attached to the bucket 19a, and the lower end loop portion 18b is hung through a plurality of connecting rings 47 and U-shaped rings 48. U-shaped frame 4 provided at both ends of
It is connected to 9. In addition, 50 is a guide ring which is externally fitted to the intersecting portion 18c of the two lifting strings 18, and 51 is a horizontal rod 46.
The retaining ring that fits over both ends of the
Is a retaining piece pivotally attached to the upper end of the.

According to the above construction, since the hoisting cords 18 are arranged in a cross shape, even if the concrete block 1 hoisted through the hoisting cords 18 shakes in the horizontal direction due to vibration during transportation, the hoisting cords 18 are hoisted. Since the intersecting portions 18c of the strings 18 interfere with each other to rapidly dampen the shaking, the work of stacking the concrete blocks 1 can be efficiently performed, and the construction period can be significantly shortened.

9 (a) and 9 (b) shows an alignment table 54 for aligning a plurality of concrete blocks 1, which is a V-shaped support for supporting each front surface portion 1a of the concrete block 1. As shown in FIG. A front surface support frame 55 having a continuous surface 55a, a support member 56 extending obliquely upward rearward from the lower end of each V-shaped support surface 55a, and fixed to the rear end of each support member 56. And a rear surface support plate 57 that supports the rear surface portion 1b of the concrete block 1. Further, the length h of one side of each V-shaped support surface 55a is matched with the length H of the short side of the front surface portion 1a of the concrete block 1, and as shown by the solid line or the phantom line in FIG. 9 (a). By placing a plurality of concrete blocks 1 on the alignment table 54, the concrete blocks 1 can be aligned in a state of being inclined rightward or leftward.

The stacking procedure of the concrete blocks 1 will be described with reference to FIGS. 10 and 11. FIG.
As shown on the left side of FIG. 1, a plurality of concrete blocks 1 are placed on the alignment table 54 in a state of being inclined leftward or rightward, and the hydraulic shovel 1 shown on the right side of FIG.
9. The hoisting device of the present invention, which is hung on No. 9, is mounted on the aligning table 54.
Of the fixed holding member 8 to engage with the front surface portion 1a of the concrete block 1.
Next, the movable clamping member driving means 16 is driven to clamp the rear side surfaces of the concrete block 1 by both clamping arms 10b, 10b of the movable clamping member 10 (see FIG. 3). As a result, each concrete block 1 has a fixed holding member 8
It is sandwiched between the movable clamping member 10 and the movable clamping member 10 (see FIG. 1).

Subsequently, as shown in FIG. 10 (b), each concrete block 1 may be hoisted by a hydraulic shovel 19 via a hoisting device, and the concrete block 1 may be transferred to the construction site in this state. However, in order to transfer the concrete block 1 more reliably, FIG.
As shown in (c), the fixed holding member driving means 15 is driven to bring the fixed holding member 8 into a horizontal posture (see FIG. 8). As a result, the concrete block 1 is placed on the fixed holding member 8 and the concrete block 1 can be transferred safely and reliably.

As shown in FIG. 11 (a), at the construction site, each concrete block 1 is piled up on a foundation concrete block 5 via a support rod 6 (see FIGS. 13 and 14).

Next, as shown in FIG. 11 (b), the concrete block 1 is placed on the alignment table 54 in a direction opposite to the above, and the engaging member driving means 16 engages the concrete block 1 accordingly. The compound member 14 is inclined in the same direction as the concrete block 1. After that, repeat the above-mentioned work,
By stacking the concrete blocks 1 on the already stacked concrete blocks 1 and repeating the same work, a side wall such as a river embankment composed of many concrete blocks 1 is constructed as shown in FIG. 11 (c). (See FIGS. 13 and 14).

In the above-mentioned stacking procedure, the concrete blocks 1 aligned on the aligning table 54 are hoisted by the hoisting device of the present invention, but as shown in FIG. A plurality of concrete blocks 1 may be placed on top and aligned.

According to this, the alignment table 54 becomes unnecessary,
Further, the step of aligning the plurality of concrete blocks 1 on the alignment table 54 can be omitted.

In the above embodiment, the lifting device for lifting the three concrete blocks 1 has been described as an example, but the present invention also applies a lifting device for lifting two or four or more concrete blocks 1. Includes.

[0040]

According to the invention of claim 1, since the hoisting strings for hoisting the hoisting frame are arranged in a cross shape, the revetment concrete block hoisted through the hoisting strings vibrates during transportation. Even if it sways in a horizontal direction, the intersecting parts of the hoisting cords interfere with each other and the swaying is attenuated rapidly, so that the work of building concrete blocks for revetment can be done efficiently and the construction period can be significantly shortened. it can. Further, the lifting work of each concrete block can be automatically performed, and also in this respect, the work of stacking the concrete blocks 1 for revetment can be performed efficiently.

According to the second aspect of the present invention, the two sides of the rear portion of the concrete block can be elastically clamped by the pair of clamping arms, and the concrete block can be reliably lifted.

Further, when the hoisted concrete block is installed on the planned revetment site, both sides of the rear part of the concrete block are clamped by the pair of clamping arms, and the rear surface part of the concrete block is open. The rear surface part can be brought into contact with the substrate provided on the sloped earth wall at the site where the revetment is to be constructed, and the positioning can be reliably performed.

According to the third aspect of the present invention, by rotating the pair of holding arms forward about the pivot shaft,
The fitting members provided on the pair of holding arms can be fitted into the grooves formed on both sides of the rear portion of the concrete block to more reliably lift the concrete block, and the concrete block can be installed at the planned revetment site. After that, by rotating the pair of clamping arms rearward about the pivot shaft, the fitting member is disengaged from the groove portion, and it is possible to easily eliminate the clamped state of the concrete block by the pair of clamping arms. .

According to the fourth aspect of the present invention, since the linear motion drive device and the rack are attached to the hoisting frame in a slanted or horizontal manner, here, the linear motion drive device and the rack are assumed to be vertical. In such a case, the lower end of the rack may project below the concrete block and come into contact with fresh concrete, but this risk can be prevented.

[Brief description of drawings]

FIG. 1 is a side view of a concrete block hoisting device for revetment, which is an embodiment of the present invention.

FIG. 2 is a cutaway front view of the same portion.

FIG. 3 is a transverse sectional view of the same.

FIG. 4 is a cutaway plan view of the same portion.

FIG. 5 is a rear view of the same.

FIG. 6 is a perspective view of the movable holding member.

FIG. 7 is a schematic front view of the same.

FIG. 8 is a side view of the fixed holding member in a horizontal state.

9A is a front view of the alignment table, and FIG. 9B is a cross-sectional view of the alignment table.

10A to 10C are schematic explanatory views showing the first half of the procedure for stacking concrete blocks.

11A to 11C are schematic explanatory views showing the latter half of the procedure for stacking concrete blocks.

FIG. 12 is a perspective view of a concrete block for seawall protection.

FIG. 13 is a front view showing a conventional concrete stacking procedure.

FIG. 14 is a longitudinal sectional view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete block 1a Front surface part of concrete block 1b Rear surface part of concrete block 8 Fixed clamping member 9 Pivoting shaft 10 Movable clamping member 10b Clamping arm 11 Pivoting shaft 12 Lifting frame 13 Support shaft 14 Engaging member 15 Fixed clamping member driving means 16 Movable Clamping Member Driving Means 17 Engaging Member Driving Means 18 Lifting Strings 19 Hydraulic Excavators (Lifting Means) 25 Electric Hydraulic Cylinders (Linear Motion Driving Devices) 26 Racks 27 Pinions (Rotating Motion Transmission Mechanisms) 39 Fitting Pins (Fitting Members) )

Claims (4)

[Claims] 1. A fixed holding member for locking the front surfaces of a plurality of revetment concrete blocks that are aligned with each other, and rotatably supported by the fixed holding member via a pivot shaft. A movable holding member that locks the rear portion of each concrete block in a disengageable manner, a lifting frame that rotatably holds the fixed holding member via a pivot shaft, and the front and rear of the concrete block on the fixed holding member. A plurality of engaging members that are rotatably supported by a support shaft along the direction and that engage with the front surface of each concrete block, and rotate the fixed holding member about the pivot shaft. Fixed holding member driving means for moving the movable holding member around the pivot shaft is provided on the fixed holding member to support the engaging members. Engagement for rotating the shaft What is claimed is: 1. A concrete block hoisting device for revetment, wherein a member driving means is provided on a fixed holding member, wherein the hoisting frame is suspended by hoisting means via hoisting strings arranged in a cross shape. Lifting device. 2. The concrete for revetment according to claim 1, wherein the movable pinching member for releasably locking the rear part of each concrete block comprises a pair of pinching arms elastically pinching both side faces of the rear part of the concrete block. Block lifting device. 3. The concrete block hoisting device for revetment according to claim 2, wherein the pair of holding arms are provided with fitting members that fit into grooves formed on both sides of the rear portion of the concrete block. 4. The fixed holding member driving means comprises a linear motion driving device that linearly reciprocates a rack that meshes with a pinion fixed to the pivot shaft, and the linear motion driving device and the rack are connected to the lifting frame. The concrete block hoisting device for revetment according to any one of claims 1 to 3, which is attached in an inclined shape or a horizontal shape.