JP2007331893A - Jack device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thin jack device capable of easily installing a concrete secondary product by adjusting its vertical direction and level. <P>SOLUTION: The jack device 1 lifts a heavy product by thrusting a working shaft 7 with a piston 6 sliding inside a cylinder 3 installed on a plate-shaped base member 9 and folding a hoisting part 4 connected to the working shaft. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a thin jack device capable of adjusting the level and level of a secondary concrete product.

To install concrete secondary products such as U-shaped grooves and road boundary blocks, first place the concrete by placing 3cm lower in the construction site to allow for a margin with the secondary product, or laying crushed stones first. Form. Next, lay the empty mortar about 3cm there, the worker puts the secondary concrete product, and adjusts the upper and lower levels by visual or intuition by adjusting the mortar. However, when the amount of mortar is large or small, the concrete secondary product must be removed and the mortar adjusted again before installation.

On the other hand, a device shown in Japanese Patent Laid-Open No. 11-199184 is provided. In this proposal, the support can be easily moved by a rotor provided on the jack head while the support is supported on the jack.
Japanese Patent Laid-Open No. 11-199184

In the construction of a concrete secondary product, a concrete secondary product having a concrete secondary product of about 80 kg to 100 kg is constructed by human power alone, and requires considerable physical strength. In addition, the construction amount is extremely small because the burden of physical strength is large, and the work efficiency is very poor. In the above prior art, horizontal movement can be easily performed, but adjustment of inclination or twist is difficult. The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a jack device that can easily install a heavy concrete secondary product using a thin jack.

A jack device in which a piston that slides in a cylinder installed on a plate-like base member is connected to an elevating part, and a heavy object placed on the base member is lifted by folding the elevating part. .
In addition, a heavy object placed on the base member by pushing an operating shaft by a piston sliding on a cylinder installed on a plate-like base member and folding an elevating part connected to the operating shaft. It is a jack device that lifts up.
In addition, a heavy load placed on the base member by pushing a wire cable with a piston that slides in a cylinder installed on a plate-like base member and folding an elevating part connected to the wire cable. It is a jack device that lifts up.

According to the thin jack device of the present invention, the vertical direction and level can be easily adjusted by inserting the jack device into the lower part of the concrete secondary product placed at the installation site by a heavy machine or the like and operating with the hydraulic pump handle. As a result, the work efficiency can be remarkably improved without consuming the physical strength of the worker.

FIG. 1 is a perspective view showing a jack device according to the present invention, and FIG. 2 is an enlarged cross-sectional side view of a main part of the jack device. In the figure, reference numeral 1 denotes a jack device, and the jack device 1 includes a hydraulic pump 2, a cylinder 3, and an elevating part 4. The hydraulic pump 2 slides in the cylinder 3 by moving the handle 5 up and down, pushes out the piston 6, pushes the operating shaft 7 connected to the elevating part 4, as shown by a chain line in FIG. 2. A heavy article such as a concrete secondary product placed by folding the elevating part 4 is raised. As will be described later, a concrete secondary product such as a U-shaped groove or a road boundary block is placed on the lifting unit 4, and the vertical direction and level of the concrete secondary product are adjusted by moving the lifting unit 4 up and down. To do. When raising the concrete secondary product, the handle of the hydraulic pump may be moved up and down, and when lowering, the pressure release lever 8 may be rotated to lower the pressure of the hydraulic pump 2. The cylinder 3 and the elevating part 4 are mounted on a base member 9, and the hydraulic pump 2 and the cylinder 3 are connected by a pressure hose.

Next, FIG. 2 is an enlarged cross-sectional side view of the main part of the jack device 1. As shown in the figure, when pressurized by the hydraulic pump 2, the piston 6 of the cylinder 3 slides to the left as indicated by the arrow in the figure, and pushes the operating shaft 7 to the left. Then, the raising and lowering part 4 rotatably supported by the operating shaft 7 lifts the rising concrete secondary product as indicated by a chain line.
In the case of lowering, when the pressure release lever 8 of the hydraulic pump 2 is rotated, the piston 6 of the cylinder 3 slides to the right as indicated by an arrow in the figure, and pushes the operating shaft 7 to the right. Then, the raising / lowering part 4 pivotally supported by the operating shaft 7 descends as shown by a chain line to lower the concrete secondary product.

FIG. 3 is a perspective view showing a state in which a road boundary block is installed by the jack device 1 according to the present invention. In the present embodiment, a jack device 21 having three jack devices 1, 1, 1 mounted on the same base member 9, the jack device 21 corresponding to the hydraulic pumps 2, 2, 2, respectively, 4 and 4 are installed, two of these elevating units 4 are installed on substantially the same straight line, the remaining four are installed in parallel, and these are arranged in a triangular shape on the same plane. . In the figure, the same reference numerals as those in FIG. 10 is a concrete secondary product showing a road boundary block, and 11 is a concrete foundation.
The jack device 21 is installed between the concrete secondary product 10 and the concrete foundation 11. The concrete secondary product 10 is supported at three points by the elevating part 4 of the jack device 21, and the three concrete jack devices 1 are adjusted by moving the respective hydraulic pumps 2 of the jack device 21 up and down, thereby providing a secondary concrete material. Install the product in the desired position according to the vertical direction and level of the product.

4 and 5 are views showing an application example when the U-shaped groove is installed by the jack device according to the present invention. FIG. 4 is a perspective view showing a state where the U-shaped groove is installed from the lateral direction. FIG. 4 is a perspective view showing a state in which the U-shaped groove is installed from the vertical direction.
FIG. 4 shows that the U-shaped groove 10 is installed by two types of jack devices 1 and 31. The jack device 31 is equipped with two jack devices 1 and 1, and the elevating parts 4 and 4 are substantially on the same straight line. The jack device 31 and the jack device 1 are arranged in a triangular shape on the same plane in the same manner as in FIG. 3, and the vertical direction and level of the U-shaped groove 10 are aligned and installed at a desired position. is there.

FIG. 5 also shows that the U-shaped groove 10 is installed by two types of jack devices 41 and 51 as in FIG. In the case of the present embodiment, the jack device 41 is formed in an L shape, and the jack device 51 is a device in which the elevating parts 4 and 4 are installed in parallel. These jack devices 41 and 51 are respectively installed at the ends of the U-shaped groove, the vertical direction and level of the U-shaped groove 10 are matched, and the U-shaped groove 10 is installed at a desired position. In the present embodiment, it is effective when installed in a place where no space can be taken in the width direction of the U-shaped groove 10.

FIG. 6 is effective when there is very little space when installing a U-shaped groove or the like.

It is a perspective view which shows the jack apparatus by this invention. It is a principal part expanded sectional side view of the jack apparatus by this invention. It is a perspective view which shows the state which installs a road boundary block with the jack apparatus by this invention. It is a perspective view which shows the state which installs a U-shaped groove | channel with the jack apparatus by this invention. It is a perspective view which shows the state which installs a U-shaped groove | channel with the jack apparatus by this invention. It is a perspective view which shows the other Example of the jack apparatus by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Jack apparatus 2 Hydraulic pump 3 Cylinder 4 Lifting part 5 Handle 6 Piston 7 Operating shaft 8 Hydraulic release lever 9 Base member 10 Concrete secondary product 11 Concrete foundation 12 Wedge 13 Stopper 14 Wire L Operation process

Claims (3)

  A jack device in which a piston that slides in a cylinder installed on a plate-like base member is connected to an elevating unit, and a heavy object placed on the base member is lifted by folding the elevating unit.   By holding the heavy load placed on the base member by pushing the operating shaft with a piston that slides in a cylinder installed on a plate-like base member and folding the lifting part connected to the operating shaft. A jack device that can be raised. A wire cable is pushed by a piston that slides in a cylinder installed on a plate-like base member, and a lifting part connected to the wire cable is folded to hold a heavy object placed on the base member. A jack device that can be raised.

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