JPH0791020B2 - Lifting device for blocks, etc. - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a hoisting device for a block or the like, which is capable of hoisting a plurality of blocks and the like at the same time.

[Conventional technology]

Conventionally, when loading the knowledge block 2 as shown in FIG. 1 on the truck 22 for transportation or when unloading it from the truck 22, 1 to 3 blocks of the knowledge block 2 are tied with a wire,
This is hung by a crane 23, or a plurality of intelligent blocks 2 are placed on a pallet in advance, and this is lifted and lowered by a forklift.

[Problems to be solved by the invention]

However, in the case of the former, it is inefficient, and there is a possibility that the intelligence blocks 2 collide with each other during lifting and are damaged. In the latter case, it is necessary to have a separate forklift, which is uneconomical.
There is a drawback that loading and unloading is not possible if the unloading site is small and there is no operating space for the forklift.

As a solution to these drawbacks, the actual development of Sho 60-3358
Japanese Patent Publication No. 4 discloses a stacking block lifting tool capable of simultaneously lifting a plurality of blocks. However, with this device, there is a problem that only one group of blocks in a single column can be lifted at a time.

[Means for solving problems]

The present invention has been made to solve the above-mentioned conventional problems, and simultaneously uses a crane or the like attached to a transportation truck to simultaneously lift a block group of a plurality of columns. The purpose of the present invention is to provide an X-shaped driven link (2) on both left and right sides of a substrate (4) having a predetermined length. 7A and 7C and 7B and 7D)
The lower ends of the drive links (6A and 6B) arranged in the X-shape, which are longer than the driven links arranged in the X-shape in the center, are pivotally attached so as to be rotatable, respectively. One of the links that is inclined in the same direction (7A, 7
The upper end of B) is arranged above the substrate (4) in parallel with a movable plate (5A) of a predetermined length and the driven link (7).
A, 7B) and the other driven link (7C, 7D) that tilts in the opposite direction
One of the driving links of the driving links (7A, 7B), which is inclined in the same direction as the driven links (7A, 7B) of the driving links, is mounted on a movable plate (5B) having a predetermined length arranged in parallel with the movable plate (5A). 6A)
The central part of the movable plate (5A), the other drive link (6
A connecting link in which the central portion of B) is pivotally attached to the movable plate (5B) so as to be rotatable, and the lower ends thereof are pivotally attached to the upper ends of the drive links (6A, 6B), respectively. (8
The upper ends of (A, 8B) are united to be pivotally attached to the pivot part (14), and the guide plate (15) is attached to the substrate (4).
A pair of expansion and contraction sandwiching bodies (3, 3) each having a structure in which the pivot part (14) of the connecting link (8A, 8B) is slidably fitted in a guide groove (15a) extending in the vertical direction of ) Are connected together by a connecting rod (19) at a predetermined distance from each other, and are respectively connected to the lower ends of the driven links (7A, 7B, 7C, 7D) and the driving links (6A, 6B). Arm (7a, 7b, 7c, 7
(d, 6a, 6b) Supporting rods (18) sandwiching between the opposing arms.
And a fixing device (16, 17) for fixing the expandable sandwiching body (3) in a contracted state.

〔Example〕

The present invention will be described in detail below with reference to the embodiments shown in FIGS. 1 to 5. 1 is a perspective view of a lifting device such as a block according to the present invention and a block, FIG. 2 is a side view showing a usage state of the device, and (a) and (b) of FIG. 3 are block lifting devices. It is a structure explanatory view of an expansion-contraction pinch body, and Drawing 4 and Drawing 5 are operation explanatory views of a block lifting device.

In the figure, reference numeral 1 denotes a hoisting device for hoisting a plurality of blocks 2, which is mainly composed of a pair of expandable and contractible sandwiching bodies 3 and 3 having a link mechanism of the same structure. That is, the stretchable sandwiching body 3 has a predetermined length of the substrate 4 arranged in a horizontal state.
And two movable plates 5A, 5B shorter than the substrate 4, two long drive links 6A, 6B, and four short driven links 7A,
7B, 7C, 7D and two connecting links 8A, 8B are mainly configured, and the two movable plates 5A, 5B are arranged side by side in a state of being displaced from each other in the longitudinal direction and above the substrate 4. Are arranged in parallel with. Further, at the lower ends of the driving links 6A, 6B and the driven links 7A, 7B, 7C, 7D, arms 6a, 6b, 7a, 7b, 7c, 7d are respectively connected at the same bending angle, and two arms are connected. Arms 6a and 6b of drive links 6A and 6B and arm 7 of driven links 7A and 7C
The blocks 2 are sandwiched by a and 7c and arms 7b and 7d of the driven links 7B and 7D, respectively.

Therefore, the central portion of the drive link 6A is pivotally attached to the central portion of the one movable plate 5A, and the central portion of the drive link 6B is pivotally attached to the central portion of the other movable plate 5B by a pin 9, respectively. At the same time, the two drive links 6A, 6B intersect to make the arms 6a, 6b face each other, and the bent portion thereof is pivotally attached to the substrate 4 by a pin 10. Also, both movable plates 5A, 5
On the left and right sides of B, the upper ends of the driven links 7A and 7B, 7C and 7D are rotatably pivoted by the pin 11 at a predetermined distance from each other, and the adjacent driven links 7A, 7C and 7B are connected to each other. The arms 7a and 7c and 7b and 7d are made to face each other by intersecting 7D with each other in an X shape, and the bent portion is pivotally attached to the substrate 4 by a pin 10. That is, the substrate 4, the movable plate 5A, and the driving link 6A
And driven links 7A and 7B, substrate 4, movable plate 5B and driving link 6
B and the driven links 7C and 7D form a parallelogram.

The lower ends of the connecting links 8A, 8B are rotatably pivoted by pins 13 to the upper ends of the two drive links 6A, 6B, respectively, and the upper ends of the connecting links 8A, 8B are joined together. A pivot shaft portion (14) is formed so as to be pivotally supported by a pin. A guide plate 15 having a guide groove 15a is fixed upright in the central portion of the substrate 4, and the pivot shaft portions 14 of the both connecting links 8A and 8B are slidably arranged in the guide groove 15a. On the other hand, the base of the hook 16 is rotatably attached to the pivot portion 14, and the lower portion of the hook 16 is engageable with the protrusion 17 protruding from the guide plate 15. There is. As will be described later, the projection 17 has a hook 16 when the expansion and contraction sandwiching body 3 is contracted and the sandwiched state of the arms 6a, 6b, 7a, 7b, 7c, 7d with respect to the block 2 is released. The position is set so that they engage with each other. When the pair of expansion / contraction sandwiching bodies 3, 3 are arranged side by side with a predetermined distance therebetween, each expansion / contraction sandwiching body 3 is provided.
Support rods 18 sandwiched between the opposing arms 6a, 6b, 7a, 7b, 7c, 7d of
, But at this time, the sandwiching support rod 18 makes the arms 6a, 6
The length is set to project outward from b, 7a, 7b, 7c, 7d.

As described above, by making the length of the sandwiching support bar 18 longer than the width between the stretchable sandwiches 3, it is possible to simultaneously lift the blocks 2 that are vertically aligned longer than the width between the stretchable sandwiches 3. In addition, the movable plates 5A and 5B are provided between the left and right ends of the substrate 4 facing each other.
The outer ends, the upper ends of the driving links 6A and 6B, and the pivots 14 of the connecting links 8A and 8B are connected by connecting rods 19 to be integrally formed. Further, the connecting bar 19 connecting the pivot portions 14 of both the connecting links 8A and 8B has a support plate 20 having a mounting hole 21 at the center.
Is fixed. On the other hand, the block 2 is a pyramidal trapezoidal block for stone walls, and a concave surface portion 2b reaching the vicinity of the head 2a is formed on one of the surfaces facing each other, and the both concave surface portions 2b are formed. It is configured to be able to be sandwiched and lifted. In the figure, reference numeral 22 is a truck for transporting the block 2, and a truck equipped with a crane 23 is used as the truck.

[Operation of Example]

Next, to explain the operation of the lifting device 1,
First, on the ground, a plurality of blocks 2 are arranged in a three-row column. At this time, if the length of one row is the same as the length of the sandwich support rods 18, the blocks of each row are very similar. The concave surface portions 2b are arranged so as to be located on the left and right in the column direction. on the other hand,
As shown in FIG. 2, the hoisting device 1 is mounted on the carrying truck 22 by hooking the hook of the crane 23 of the carrying truck 22 into the mounting hole 21 of the supporting plate 20 thereof. At this time, the expansion and contraction sandwiching body 3 of the lifting device 1 is in a contracted state, the hook 16 is engaged with the protrusion 17, and the pair of opposing arms 6a, 6b,
7a, 7b, 7c, 7d, that is, the space between the sandwiched support bars 18 is in a released state.

Therefore, as shown in FIG. 4, the lifting device 1 is a crane.
After being transferred to the ground on the block 2 aligned by the rotation of 23, it descends and the head 2a of the block 2 enters between the opposing sandwiching and supporting rods 18. Then, when the sandwiching support rod 18 reaches the position corresponding to the concave surface portion 2b of the block 2, the hook 16 is released from the projection portion 17 and the telescopic sandwiching body 3 of the lifting device 1 is set in a free state. Therefore, when the hoisting device 1 is pulled up by the crane 23, as shown in FIG. 5, the pivot portion 14 of the expansion and contraction sandwiching body 3 ascends in the guide groove 15a of the guide plate 15 due to the weight of the hoisting device 1, so that the connecting link. 8A, 8B
The drive links 6A, 6B rotate via the pins 10 of the base plate 4 as fulcrums, and as a result, the sandwiching support rods 18 fixed to the arms 6a, 6b of the drive links 6A, 6B move inwardly relative to each other. , Abut on the concave surface portion 2b of the block 2 and sandwich it. At the same time, the movable plates 5A, 5B pivotally attached to the drive links 6A, 6B and the pin 9 ascend while moving in the direction of the guide plate 15, so that the arms 7a of the driven links 7A, 7B, 7C, 7D, The sandwiching support rods 18 fixed to 7b, 7c, 7d move inward relative to each other and abut against the concave surface portion 2b of the block 2 to sandwich them. As a result, the facing concave portions 2b of the block 2 are clamped by the clamp support rods 18. Therefore, when the hoisting device 1 is further pulled up, the block 2 is hoisted in a state of being pinched and fixed by the pinching support rods 18,
It is transferred onto the loading platform of the transportation truck 22.

On the above-mentioned loading platform, when the hoisting device 1 is lowered so that the bottom surface of the block 2 comes into contact with the loading platform surface, and further descends, the pivot portion 14 of the telescopic clamp 3 causes the guide groove 15 of the guide plate 15 to move.
Since a is lowered, the expansion and contraction sandwiching body 3 contracts. As a result, since the operation is reversed from the state when the hoisting is performed, each of the sandwiching support rods 18 separates from the concave surface portion 2b of the block, and the sandwiching and fixing of the block 2 is released.

Therefore, when the hook 16 is engaged with the protrusion 17 to fix the contracted state of the expansion and contraction sandwiching body 3 and then the lifting device 1 is pulled up, the sandwiching support bar 18 is separated from the block 2 and the loading work is completed. Of.

〔The invention's effect〕

As described above, the hoisting device for the block or the like according to the present invention is such that the lower ends of the driven links (7A and 7C and 7B and 7D) arranged in the X-shape on the left and right sides of the substrate (4) of the predetermined length, and the center. The lower ends of the driving links (6A and 6B) arranged in the X-shape, which are longer than the driven links arranged in the X-shape, are pivotally attached so as to be rotatable, and are inclined in the same direction among the driven links. The upper end of one driven link (7A, 7B) is connected to the board (4).
A movable plate (5A) with a predetermined length, which is arranged above and in parallel with this
In addition, the upper end of the other driven link (7C, 7D) inclined in the opposite direction to the driven link (7A, 7B) is attached to the movable plate (5A).
On a movable plate (5B) of a predetermined length arranged in parallel with the movable plate, the central portion of one driving link (6A) of the driving links inclined in the same direction as the driven links (7A, 7B) is attached to the movable plate. (Five
A), the central portion of the other drive link (6B) is pivotally attached to the movable plate (5B) so as to be rotatable, and is rotatable at the upper ends of the drive links (6A, 6B) respectively. As described above, the upper ends of the connecting links (8A, 8B) whose lower ends are pivotally connected are united so as to be pivotally attached by the pivot (14), and the guide plate (15) attached to the base plate (4). A pair of expansion and contraction sandwiching bodies (3, 3) each having a structure in which the pivot portion (14) of the connecting link (8A, 8B) is slidably fitted in a vertically extending guide groove (15a). Of the driven links (7A, 7A)
B, 7C, 7D) and the lower ends of the drive links (6A, 6B) are respectively connected to the lower ends of the arms (7a, 7b, 7c, 7d, 6a, 6b), which are opposed to each other, by sandwiching support bars (18). Fixing means (16,1) for connecting and fixing the expansion and contraction body (3) in a contracted state.
7) is provided, it is possible to hang up and unload two or more columns of column blocks at the same time and without the blocks colliding with each other.

Therefore, the working time can be greatly shortened, the product can be reliably prevented from being damaged, and the labor burden on the worker can be reduced. Also, since the hoisting device has a simple structure, it can be manufactured at low cost, and since the crane attached to the transportation truck can be used,
Loading and unloading is possible even in a small space where there is no work space,
Moreover, there are various effects such as capital investment for forklift is unnecessary.

[Brief description of drawings]

FIG. 1 is a perspective view of a lifting device such as a block according to the present invention and the block, FIG. 2 is a side view showing a usage state of the device, and FIGS. 3A and 3B are expansion and contraction of the lifting device such as a block. The structure explanatory view of the sandwiching body, and FIGS. 4 and 5 are operation explanatory views of the block lifting device. 1 ... Lifting device, 2 ... Block, 3 ... Expansion / contraction clamp, 4 ... Substrate, 5A, 5B ... Movable plate, 6A, 6B ... Driving link, 6a, 6b ... Same arm, 7A, 7B, 7C7D …… Driven links, 7
a, 7b, 7c, 7d …… Same arm, 8A, 8B …… Connecting link, 14…
… Pivot part, 15 …… guide plate, 15a …… long hole, 16 …… hook, 17 …… projection part, 18 …… sandwich support rod, 19 …… connecting rod.

Claims (1)

[Claims] 1. A lower end of driven links (7A and 7C and 7B and 7D) arranged in an X shape on the left and right sides of a base plate (4) having a predetermined length, and a driven link arranged in an X shape in the center. The lower ends of the long X-shaped driving links (6A and 6B) are pivotally attached so as to be rotatable, and the upper ends of one of the driven links (7A, 7B) inclined in the same direction. On a movable plate (5A) of a predetermined length arranged above the substrate (4) in parallel therewith, and the other driven link (7C, 7D) inclined in the opposite direction to the driven link (7A, 7B). One of the driving links of the driving links (7A, 7B), which is inclined in the same direction as the driven links (7A, 7B) of the driving links, is mounted on a movable plate (5B) having a predetermined length arranged in parallel with the movable plate (5A). 6A) is pivoted so that the central portion of the movable plate (5A) is rotatable and the central portion of the other driving link (6B) is rotatable about the movable plate (5B). And the upper ends of the connecting links (8A, 8B) whose lower ends are pivotally attached to the upper ends of the drive links (6A, 6B) are joined together so that the upper ends of the connecting links (8A, 8B) can be turned by the pivot part (14). When pivotally attached to the base plate (4), the pivot shaft portion (14) of the connecting link (8A, 8B) is slid into the guide groove (15a) extending in the vertical direction of the guide plate (15) mounted on the substrate (4). When a pair of expansion and contraction sandwiching bodies (3, 3), which are fitted so as to be movable, are integrally connected by a connecting rod (19) with a predetermined gap therebetween, the driven link (7
(A, 7B, 7C, 7D) and each of the arms (7a, 7b, 7c, 7d, 6a, 6b) connected to the lower ends of the driving links (6A, 6B) sandwiching between the opposing arms (18) Fixing means (16, 1) for fixing the expansion and contraction body (3) in a contracted state.
7) A hoisting device for blocks and the like characterized by being provided with.