JPH0661825U - Hand jack for lifting gate-shaped gutter block - Google Patents

Abstract

(57) [Summary] [Purpose] When the front and rear end portions of the gate-shaped gutter block are placed on a trolley, the end portions are lifted easily, quickly and safely. [Structure] The front end portion of the operating lever 12 is pivotally attached to the bearing pieces 11, 11 provided on the support base 10 so that the operating lever can rotate in a vertical plane. At the front end of the operating lever, a holding shaft 1 inserted into connecting holes 5 and 5 provided in upper portions of the side walls 3 and 3 of the gate-shaped gutter block 2 facing each other.
9 and 19 are attached via connecting pieces 20 and 20.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hand jack used for lifting the end portion of a block when the front and rear end portions of a gate-shaped gutter block are placed on a truck.

[0002]

[Prior art]

 As shown in FIGS. 8 to 9, the conventional method of transporting a gate-shaped gutter block, in which the upper portions of the side walls are integrally connected by a connecting beam, to a predetermined place is as shown in FIGS. , C is installed on the lower surface side of the upper part, and a lift carrier e with hydraulic jacks d, d on the left and right is introduced, and the hydraulic jacks d, d are extended and the connecting beam part g is lifted by the lifting part f. The gutter block is levitated by the above, and the lift truck is run to carry the gutter block to a predetermined place.

[0003]

[Problems to be solved by the device]

 However, in the case of transporting in this way, there is a problem that a dedicated lifting truck having a large-scale structure is required, which causes an increase in transport cost. In addition, the lift truck was equipped with a hydraulic jack integrally and had a large overall weight, so it was not easy to bring the truck to the construction site. In addition, when the carriages are pushed back to their original positions after carrying the gutter blocks, since the lift trucks had the same weight as described above, each carriage had to be pushed back. It took a worker. As described above, when the conventional transportation method is used, at least two operators are required to transport the gutter block, which causes a problem of poor work efficiency. Furthermore, since the lift truck is introduced on the lower surface side of the gutter block, the distance between the wheels h of the truck must be considerably smaller than the width dimension of the gutter block. There is also a risk that the transportation of the gutter block may become unstable due to the running surface of the transport vehicle being uneven.

From the above, the present inventor has conceived a transportation method in which the front and rear end portions of the side wall portion of the gutter block are placed on a simple trolley and easily and stably transported. An object of the present invention is to provide a simple hand jack used for suspending the end portion of the gutter block when the front and rear end portions of the gutter block are placed on a truck.

[0005]

[Means for Solving the Problems]

 In order to solve the above problems, a hand jack for lifting a gate-shaped gutter block (hereinafter referred to as a hand jack) according to the present invention integrally connects upper portions of opposing side wall portions 3 and 3 with a connecting beam 4, and For lifting a gutter-shaped gutter block with connecting holes 5 and 5 used in connecting blocks to each other on the upper side of the opposing side wall parts 3 and 3 in the block length direction: A portion of the operating lever 12 near the front end is pivotally attached to a bearing portion provided on the support base 10 so that the operating lever is rotatable in a vertical plane, and the front end portion of the operating lever is provided with a gutter block. The holding shafts 19 and 19 inserted into the connecting holes 5 and 5 are attached via connecting pieces 20 and 20, respectively.

In the hand jack according to the present invention, the connecting piece 20 is preferably formed to be bendable, for example, a chain or a wire. Further, the operation lever 12 preferably has a rear end portion thereof as a bent portion 15 which is bent upward toward the rear. Further, it is preferable that the support base 10 can be expanded and contracted in the vertical direction.

[0007]

[Action]

 However, when both the holding shafts 19 and 19 are inserted into the left and right connecting holes 5 and 5 of the side groove block 6 and the rear end side portion of the operating lever 12 is pushed down, the end portion of the side groove block 6 is lifted. In this hoisted state, the dolly is attached to the lower end of the block. Then, the holding shaft 19 is pulled out from the connecting hole 5.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, a hand jack 1 according to the present invention is used for hoisting the front and rear end portions of a gutter-shaped gutter block 2 as shown in FIG.

The gutter block 2 integrally connects the upper portions of the opposing side wall portions 3 and 3 by a connecting beam 4, and connects the blocks to the upper portion of the opposing side wall portions 3 and 3. The connecting holes 5 and 5 used for the are provided in the block length direction. In FIG. 3, after the end portions of the side groove blocks 2 and 2 having such a configuration are brought into contact with each other, the connecting shaft 6 is inserted into the connecting holes 5 and 5 in the communicating state, and the nuts 7 are attached to both end portions of the connecting shaft 6. It shows a state in which the blocks are connected to each other by tightening the screws.

More specifically, the hand jack 1 is provided with bearing pieces 11 and 11 facing each other, which constitute an upper end portion of a support base 10 in which a support post 9 is provided upright in a central portion of a base 8. A portion 13 near the front end of the operating lever 12 is pivotally mounted so that the operating lever can be rotated in a vertical plane. The rear end side portion of the operating lever 12 is located in a horizontal state of the operating lever 12. The bent portion 15 is bent upward toward the rear. Further, at the front end portion 17 of the operating lever 12, holding shafts 19 and 19 which are inserted into the facing connecting holes 5 and 5 of the side groove block are connected via connecting pieces (for example, chains) 20 and 20. It is attached. In the present embodiment, the support column 9 is divided into an outer cylinder 9a which is erected on the pedestal 8 and an inner cylinder 9b which is fitted to the outer cylinder 9a and has the upper end portion as the bearing pieces 11 and 11 and which is divided into two parts. The length of the support column 9 can be adjusted by adjusting the insertion amount of the inner cylinder 9b into the cylinder 9a and then tightening the fixing screw 21.

However, when hoisting the end portion of the gutter block 2, after adjusting the length of the column 9 according to the height of the gutter block, the hand jack 1 is moved to the gutter block as shown in FIGS. 4 to 5, for example. When the two holding shafts 19 and 19 are inserted into the connecting holes 5 and 5 of the one end 22 of the block and the bent portion 15 of the operation lever 12 is pushed down, the one end 22 of the block is moved to the position shown in FIG. It is lifted as shown in. In this state, the one end portions 23, 23 of the suspended side wall portion are mounted on a carriage 25 having wheels 24, 24 on both left and right sides of the lower surface portion, as shown in FIGS. After that, the other end portion 26 of the block is similarly lifted, and the other end portions 27, 27 of the side wall portions are placed on a carriage 30 having, for example, turning wheels 29 at the center of the lower surface portion, as shown in FIGS. As a result, the gutter block can be transported by running wheels. After the gutter block is transported to a predetermined place, the end portions of the gutter block are lifted up and the carts 25 and 30 are removed in the same manner as described above.

As in the present embodiment, when the rear end portion of the operation lever 12 is the bent portion 15 which is bent rearward and upward, even when the hand jack is housed in the gutter block, The operation lever can be pushed down without difficulty.

[0013]

[Effect of device]

  Since the hand jack according to the present invention is constructed as described above, by inserting both holding shafts into both the connecting holes facing each other of the gate-shaped gutter block, and pushing down the part on the rear end side of the operation lever. The end portion of the gutter block can be easily lifted, and in this state, the lifted block end portion can be placed on the carriage. After the block is transported, the end of the block can be lifted in the same manner and the truck can be removed from the gutter block.

From the above, according to the present invention, a trolley for carrying the gate-shaped gutter block has a simple structure in which wheels are provided on the chassis, is small and lightweight, and has a large wheel interval. It becomes possible to use it. Therefore, compared to the conventional block transport using a lift truck that has an integrated jack, it is possible to reduce the transport cost, streamline the transport work, and improve the transport safety. The transportation work can be rationalized.

Further, the hand jack according to the present invention focuses on the connection holes on the left and right of the block provided for connecting the gate-shaped gutter blocks, and the holding shaft is inserted into the connection holes to hold the gutter block. Adopt a configuration. Therefore, it is possible to efficiently hold and release the heavy side gutter block by one-touch operation. In addition, since the hoisting is performed by holding at two points, the block is held securely and the hoisting work can be performed safely.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating an embodiment of the present invention.

FIG. 2 is a perspective view showing a state where both end portions of the gate-shaped gutter block are placed on a carriage.

FIG. 3 is a plan view showing a connected state of the gate-shaped gutter blocks.

FIG. 4 is a perspective view illustrating a usage state of the present invention.

FIG. 5 is an explanatory view seen from the side for explaining a state where the end portion of the gate-shaped gutter block is lifted by the hand jack.

FIG. 6 is an explanatory view illustrating a state in which one end portion of the lifted gate-shaped gutter block is placed on a trolley.

FIG. 7 is an explanatory diagram illustrating a state in which the other end portion of the lifted gate-shaped gutter block is placed on a carriage.

FIG. 8 is a front view illustrating a transportation procedure of a conventional gate-shaped gutter block.

FIG. 9 is a plan view illustrating a transportation procedure of a conventional gate-shaped gutter block.

[Explanation of symbols]

 1 Hand jack 2 Gate-shaped gutter block 3 Side wall part 4 Connecting beam 5 Connecting hole 10 Support stand 12 Operating lever 15 Bending part 19 Holding shaft

Claims (4)

[Scope of utility model registration request] 1. A connecting hole used to integrally connect upper portions of opposing side wall portions 3 and 3 by a connecting beam 4 and to connect upper portions of the opposing side wall portions 3 and 3 to each other. A hand jack for hoisting a gate-shaped gutter block in which 5, 5 are provided in the block length direction. Holding shafts 19 and 19 which are pivotally mounted so as to be rotatable in a plane and which are inserted into the connecting holes 5 and 5 of the side groove block are connected to the front end portion of the operating lever via connecting pieces 20 and 20. The hand jack for lifting the gate-shaped gutter block, which is characterized by being attached by. 2. The connecting piece 20 is bendable.
Hand jack for lifting the above mentioned gate-shaped gutter block. 3. The rear end portion of the operating lever 12 is a bent portion 15 which is bent upward toward the rear.
Hand jack for lifting the above mentioned gate-shaped gutter block. 4. The hand jack for lifting a gate-shaped gutter block according to claim 1, wherein the support base 10 is capable of expanding and contracting in a vertical direction.