JP2001335256A - Returning auxiliary device for hydraulic elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a returning auxiliary device for a hydraulic elevator which can be commonly used without being affected by arrangement or pitch of plural thimble rods. SOLUTION: This device comprises a presser member 11 having a through hole 13 for the thimble rod 6 to be inserted, of a smaller diameter than an outer diameter of a lower spring seat 8, and a pair of slits 14 for a support belt 12 to be inserted on both sides of the through hole 13, and the support belt 12 to be inserted into the slits 14 in the presser member 11. They are installed on an end part of each thimble rod 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a return assist device for a hydraulic elevator.

[0002]

2. Description of the Related Art Conventionally, hydraulic elevators have been
As shown in JP-A-39915, a hydraulic jack, a plurality of main ropes hung on a pulley provided at the upper end of a plunger of the hydraulic jack, one end of which is elastically supported by a stationary support frame, and these main ropes And a car elastically supported at the other end of the car, an emergency stop device provided on the car, and the like. The elastic support portion includes a thimble rod fixed to each main rope, a lower spring seat and a spring inserted into each thimble rod, and a stationary support frame or a car support frame. In addition, both support frames
A spring seat storage portion is formed, and usually, the upper spring seat is stored in the spring seat storage portion.

By the way, in the above hydraulic elevator,
In order to ensure safe operation, it is necessary to test whether the emergency stop device operates normally. When this test was performed, the main rope was in a slack state, and the upper spring seat in the above-described elastic support portion was in a state of being separated from the spring seat storage portion of the support frame. When the plunger of the hydraulic jack is raised and the main rope is pulled up to return to the normal state from this state, the upper spring seat may come off the spring seat storage part. It is necessary to perform an operation such as holding down the upper spring seat by hand while the upper spring seat is housed in the spring seat storage portion during the return work. Therefore, this conventional technique is very dangerous, and in some cases, a hand may be pinched and injured. Further, as described above, a device using a holding member and a support band has been proposed in order to normally accommodate the upper spring seat in the spring seat storage portion.

[0004]

However, in the above-described conventional apparatus, since the holding members have holes through which all the thimble rods penetrate, the thimble rods are arranged in different models, for example, in a triangular arrangement. It is necessary to prepare a plurality of types which are arranged in a straight line or have different pitches.

It is an object of the present invention to provide a return assist device for a hydraulic elevator that can be used in common without being affected by the arrangement or pitch of a plurality of thimble rods.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a hydraulic jack, a pulley mounted on an upper end of a plunger of the hydraulic jack, a plurality of main ropes wound around the pulley, and an end of each main rope. A thimble rod attached to the portion, a support frame for elastically supporting a spring provided at an end of the thimble rod through a pair of upper and lower spring seats,
For a hydraulic elevator equipped with a car to which one of the support frames is fixed, an emergency stop device provided in the car, and forcibly stopping the lowering of the car, for example, the emergency stop device After the operation test, in the return assist device of the hydraulic elevator used when raising the pulley by the hydraulic jack to return to the normal state, through the thimble rod, and through holes smaller than the outer diameter of the lower spring seat, It has a holding tool having a pair of long holes through which the supporting bands provided on both sides of the through hole and a supporting band passed through the long holes of the holding member, and attaches them to the end of each thimble rod. It is achieved by doing.

[0007] With the above configuration, the upper spring seat is previously lifted via the lower spring seat by the upper spring seat and the spring retainer, and the upper spring seat is stored in the spring seat storage portion by supporting the retainer by the support band. During the return operation, simply pulling up the pulley by the hydraulic jack, the tension is applied to lift the car on the main rope while the upper spring seat is in the upper part of the spring seat, and the desired tension is applied. The return operation can be completed.

[0008] As described above, the plurality of upper spring seats are held in the spring seat storage portion by the holding member and the support band, and the return operation can be performed safely and promptly without the need of human hands. Can do it. In addition, since the upper and lower spring seats and the springs are individually supported by the holding members and the support bands, the arrangement of the thimble rods can be commonly used even if the arrangement of the thimble rods is linear, polygonal, or different in pitch. That is, one type of holding member and support band can be commonly used regardless of the arrangement and pitch of the thimble rods.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a front view of a main part of a stationary side support frame including an elastic support portion, FIG. 2 is a perspective view of a holding member, FIG. 3 is a schematic front view of a hydraulic elevator to which the present invention is applied, and FIG. It is a schematic plan view of a hydraulic elevator.

First, the main configuration of a hydraulic elevator to which the present invention is applied will be described with reference to FIGS.

The hydraulic elevator comprises a hydraulic jack 1 and
A pulley 2 attached to an upper end of a plunger 1A of the hydraulic jack 1, a plurality of main ropes 4 wound around the pulley 2, a thimble rod 6 attached to an end of each main rope, and a thimble rod 6 6, a support frame 3 for elastically supporting the spring 5 via a pair of upper and lower spring seats 7, 8, a car 9 to which one of the support frames is fixed, and a car 9 provided on the car 9 And an emergency stop device (not shown) for forcibly stopping the lowering of the car 9.

Next, the return assisting device according to one embodiment of the present invention comprises a holding member 11 and a support band 12, and the holding member 11 is made of a metal flat plate as shown in FIG. It has a through hole 13 slightly larger than the nut 6a of the thimble rod 6 and an inner diameter smaller than the outer diameter of the lower spring seat 8, and an elongated hole 14 formed on both sides of the through hole 13 and through which the support band 12 passes. The regions of both long holes 14 are bent at right angles.

Next, the procedure for using the return assisting device will be described.

For example, after the operation test of the emergency stop device is completed or for some reason, the plunger 1A descends,
The upper spring seat 7 is separated from the support frame 3 by loosening.

At the time of the returning operation to the normal state, the thimble rod 6 is inserted into the through hole 13 of the holding member 11, and then the holding member 11 is lifted and the upper spring seat 7 is moved.
Is stored in the spring seat storage portion 3a (10a) of the support frame 3 (10), and the holding member 11 is held by the support frame 3 (10) by the support band 12 in this state. FIG. 1 shows the state at this time. This operation is similarly performed for the remaining two thimble rods 6. After pulling up and holding the upper and lower spring seats 7, 8 for all thimble rods 6, the plunger 1
When A is raised, each main rope 4 is raised, and a predetermined pressure is applied to each main rope 4. Finally, each support band 12 is loosened and each holding member 11 is removed. This completes the return operation.

[0016]

As described above, according to the present invention, the upper spring seat is lifted by the holding member, the support band is lifted, and the holding member is held in a state where the upper spring seat is stored in the spring seat storage portion by the supporting band. It is possible to safely and quickly return to the normal state without the need for manual intervention,
Since the holding is performed individually, the same holding member can be used even if the arrangement pitch of the thimble rods is different, and one type can be used for all models.

[Brief description of the drawings]

FIG. 1 is a front view of a main part of an embodiment of the present invention.

FIG. 2 is a perspective view according to an embodiment of the present invention.

FIG. 3 is a schematic front view of a hydraulic elevator to which the present invention is applied.

FIG. 4 is a schematic plan view of a hydraulic elevator to which the present invention is applied.

[Explanation of symbols]

 3, 10 Support frame 4 Main rope 3a, 10a Spring seat storage part 7 Upper spring seat 8 Lower spring seat 9 Car 11 Holder 12 Support band 13 Through hole 14 Slot

Claims (1)

[Claims] 1. A hydraulic jack, a pulley attached to an upper end of a plunger of the hydraulic jack, a plurality of main ropes wound around the pulley, a thimble rod attached to an end of each main rope, A support frame for elastically supporting a spring provided at an end of the thimble rod via a pair of upper and lower spring seats; a car to which one of the support frames is fixed; A hydraulic elevator equipped with an emergency stop device for forcibly stopping the hydraulic elevator, for example, when an operation test of the emergency stop device is performed and a pulley is raised by a hydraulic jack to return to a normal state. The auxiliary device at the time of return, through the thimble rod, and provided on both sides of the through hole and the through hole smaller than the outer diameter of the lower spring seat Having a pair of long holes through which the supporting band passes, and a supporting band passed through the long hole of the pressing member, and these are attached to the end of each thimble rod. Auxiliary device for elevator return.