JPS6144786Y2 - - Google Patents

Description

Detailed Description of the Invention This invention relates to an installation tool for a hydraulic elevator that rotates and connects the plungers of hydraulic jacks that are separately carried into a hoistway.

First, a conventional hydraulic elevator installation tool will be explained with reference to FIGS. 1 and 2.

In Fig. 1, 1 is a hydraulic jack, 2 is its cylinder, 3 is a plunger fitted to the cylinder 2, 2a is its upper cylinder, and 2b is its lower cylinder, which is connected to the upper cylinder 2a by a screw 2c. combined. 3a is an upper plunger of the plunger 2, 3b is a lower plunger, and 4 is a coupler, which connects the upper plunger 3a and the lower plunger 3b with screws 3c and 3d, and is installed in the lower plunger 3b in advance. That is, the hydraulic jack 1 is divided into upper and lower parts at the screws 2c and 3c. Here, plunger 3
To explain the connection situation, first, the lower plunger 3b is pulled out from the lower cylinder 2d and fixed with an appropriate tool. Next, the upper plunger 3a is lifted directly above the lower plunger 3b. Thereafter, a wrench, which will be described later, is attached to the vicinity of the connection between the upper plunger 3a and the lower plunger 3b, and the screw 3c is inputted with a specified torque.

At this time, the torque for rotating the cylindrical body such as the lower plunger 3b is generally 50 to 150 kg-m.
Installation work in a complex hoistway requires a large amount of torque. For this purpose, the installation tool shown in FIG. 2 is used.

That is, in FIG. 2, 5 is a wooden wrench, 5a is a V-shaped notch provided in this at a position opposite to the plunger 3, and 6 is a bolt that engages the wrench 5 with each other to open the plunger 3. It is attached so as to be clamped and fastened with a nut 7.

That is, as shown in FIG. 2, the wrench 5 is fastened to the plunger 3, and the plunger 3 is rotated by the wrench 5.

In order to obtain the necessary torque with this wrench 5, the wrench 5 has to be large in size, which results in poor workability in a narrow hoistway. Furthermore, the smoother the surface of the plunger 3, the more likely it is to slip, making it difficult to ensure a specified torque. Furthermore, since the wrench 5 is made of wood, it lacks uniformity and is often broken, resulting in the disadvantage that it must be manufactured for each hydraulic elevator construction.

This invention solves the above-mentioned drawbacks, and aims to provide a hydraulic elevator installation tool that can firmly clamp a cylindrical body and has good workability.

An embodiment of this invention will be described below with reference to FIGS. 3 to 5.

In the figure, the same reference numerals as in FIGS. 1 and 2 indicate corresponding parts, 8 is a gripping band, grippers 9a, 9b made of steel,
The fittings 10 are pivotally connected to each other by pins 11, 12 is a fastener made of bolts and nuts for fastening the ends of the gripping band 8, 13 is a through hole provided in the grippers 9a and 9b, 14 is the gripper 9
A handle made of steel that can be detachably attached to a etc., 15
16 is a mounting pin inserted into the through hole 13 and the end of the handle 14; 16 is a clamping piece; 16a is a receiving metal fitting for the clamping piece 16, which is made of a steel plate and is curved to correspond to the cylindrical surface of the plunger 3; 16b is a threaded rod that is erected on the back side and inserted into the gripper 9a, etc., 16c is a compression coil spring fitted into the insertion part of the threaded rod 16b, and 16d is screwed into the tip of the threaded rod 16b. The nut 16e is a clamping plate made of an aluminum plate arranged along the surface of the receiving metal fitting 16a facing the plunger 3, and 16f is an adhesive for adhering this to the receiving metal fitting 16a, which is made of two-component Epoquin resin. are used.

That is, the springs 1 are attached to the grippers 9a and 9b, respectively.
The clamping pressure piece 16 is attached via the clamping member 6c, and the two clamping bands 8 are wound around the plunger 3 and tightened by the fastener 12, as shown in FIG. Then, attach the mounting pin 15 to the through hole 13 at the appropriate location.
A handle 14 is attached through the handle 14, and by operating the handle 14, the upper and lower plungers 3a, 3b are rotated and connected. At this time, the clamping pressure plate 16e
are in contact with a wide area along the cylindrical surface of the plunger 3, and the aluminum plate provides high frictional force, so the required connection torque can be easily obtained. Therefore, the upper and lower plungers 3a and 3b can be connected normally with a simple operation. In addition, by appropriately replacing the fitting 10 and the clamping pressure piece 16 with other ones, it is possible to easily accommodate plungers 3 having different outer diameters, and the clamping pressure band 8 can be adjusted to a normal shape. 3 and can easily obtain the required connection torque.

As explained above, in this invention, a clamping piece is removably attached to the gripper of a gripping band that is wound around a cylindrical body such as a plunger, and the clamping piece is made of an aluminum plate. A curved surface that follows the curved surface of the cylindrical surface is formed to face the cylindrical surface, and the gripping band is fastened to the cylindrical surface of the cylindrical body using a fastener that fastens the ends of the gripping band to each other, and the gripper is placed in the appropriate position. A removably configured handle is attached to the handle, and the cylindrical body is rotated via a clamping piece by operating the handle, thereby connecting the cylindrical bodies to each other.
This makes it possible to easily obtain the necessary torque to rotate and connect the plungers, etc., even in narrow elevator hoistways, and with simple operations, and to connect the plungers, etc. normally. This is to realize a hydraulic elevator installation tool that can be used.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view conceptually showing a split type hydraulic jack for a hydraulic elevator, Fig. 2 is a plan view showing a conventional hydraulic elevator installation tool, and Fig. 3 is an installation tool for a hydraulic elevator according to this invention. 2 is a view corresponding to FIG. 2 showing an embodiment, FIG. 4 is a sectional view taken along the line -- in FIG. 3, and FIG. 5 is a plan view of the main part of FIG. 4. 8...Gripping band, 9a, 9b...Gripper, 12...
... Fastener, 14 ... Handle, 16 ... Clamp pressure piece. In addition, the same parts or corresponding parts in the figures are indicated by the same reference numerals.

Claims (1)

[Scope of utility model registration request] A device for gripping a cylindrical surface of a cylindrical body includes a gripping band in which a plurality of grippers are pivotally connected to each other and arranged in a winding manner around the cylindrical surface, and a gripping band that connects the ends of the gripping bands to each other. a fastener that tightens the cylindrical surface to the cylindrical surface; a handle that is removably attached to the gripper; and a clamping piece which is arranged to face each other and whose surface facing the cylindrical surface is made of aluminum material and which is removably attached to the gripper. Installation tools.