JPH09104577A - Supporting device for hydraulic jack for hydraulic elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain sufficient vibration isolating effect against the vibration in the elevator shaft direction by providing a stopper parallel to vibration isolation rubber in a supporting device, restricting deformation amount of the vibration isolation rubber, and suppressing deflection of a hydraulic jack within an allowable range. SOLUTION: A supporting device for a hydraulic jack 1 is constituted by connecting an elevator shaft fixing side part 22 to a hydraulic jack fixing side part 36 with a vibration isolation rubber inserted therebetween 33. Clearance (d) between a plate 21a and a plate 30 and/or a plate 32 is set within allowable deformation of the hydraulic jack 1 and a stopper 50 is constituted of the plate 21a, 30 and 32. Mounting hole of a blacket 21 to be penetrated by a bolt is made loose and clearance between the bolt and the mounting hole is made almost the same as clearance (d). Owing to the constitution, propagation of the vibration from the jack to the inside of a building can be prevented, 2nd variation of a hydraulic jack can be suppressed in allowable range without the stopper in particular.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for supporting a hydraulic jack of a hydraulic elevator on a hoistway wall, and more particularly to a device for preventing vibration of the hydraulic jack from propagating to the hoistway wall. .

[0002]

2. Description of the Related Art A conventional example of a supporting device for a hydraulic jack is shown in FIG.
This will be described with reference to FIG. 3 is a schematic view of the hydraulic elevator, FIG. 4 is a sectional view taken along line AA of FIG. 3, and FIG. 5 is a sectional view taken along line BB of FIG. The hydraulic oil sent from a hydraulic pump (not shown) is sent to the hydraulic jack 1 and moves the plunger 2 up and down. A rope 4 having one end fixed to the leg portion 1a of the hydraulic jack 1 and the other end fixed to the frame 5a of the car 5 is wound around the sheave 3 installed on the upper portion of the plunger 2. Reference numeral 6 is a guide rail for guiding the lifting and lowering of the car 5, and 7 is a support device for supporting the hydraulic jack 1 on the hoistway wall 8.

By the way, the hydraulic oil sent to the hydraulic jack 1 has vibrations due to pulsation of the hydraulic pump and mechanical vibrations of a hydraulic power unit (not shown). There is also vibration from the 2a, the sheave 3, and the like. These vibrations may propagate to the hoistway wall 8 via the supporting device 7 and further propagate to the living room in the building, causing a problem of noise in the living room.

Therefore, the above-mentioned problem is solved by forming the supporting device 7 into a structure in which a vibration-proof rubber is incorporated.
As shown in FIG. 4, the brackets 10 and 11 are fixed to the hoistway wall 8 by the anchor bolts 12, while the antivibration rubber 13 is wound around the hydraulic jack 1 and the U bolts 14 are attached.
And a foot portion of the U bolt 14 is fixed to a mounting hole (not shown) of the bracket 10 by a nut 15. With this configuration, the vibration from the hydraulic jack 1 is damped by the vibration damping rubber 13, and the propagation of the vibration into the building is prevented.

By the way, in order to increase the vibration damping effect of the vibration damping rubber 13, the vibration damping rubber 13 may be made thicker and softer. If this is done, however, the hydraulic jack 1 will easily swing, so that an earthquake or the like may be applied. The vibration force may cause an abnormally large displacement of the hydraulic jack 1. Therefore, a stopper 16 for limiting the displacement of the hydraulic jack 1 is provided.

The stopper 16 is installed directly above or below the support device 7, and as shown in FIG.
A gap 17 is provided between the U bolt 14 and the U bolt 14. This gap 17 is less than or equal to the thickness of the vibration-proof rubber 13,
It is set so as to limit the displacement of the hydraulic jack 1 within an allowable value.

[0007]

In the conventional hydraulic jack supporting device 7, the vibration isolating rubber 13 wound around the hydraulic jack 1 is used.
The contact area of the U-bolt 14 is relatively small because the contact area is large, but the contact area of the bracket 10 is large because the contact area is small. Therefore, there is a problem in that it is difficult to obtain a sufficient vibration damping effect particularly for vibration in the direction of the hoistway wall 8 (X direction in FIG. 4).

Further, if the vibration-proof rubber 13 is made thick and soft in order to enhance the vibration-proof effect, there is a problem that the stopper 16 must be additionally provided. Further, with the stopper 16 having the configuration of FIG. 5, there is a problem that it is difficult to make the gap 17 around the hydraulic jack 1 uniform.

[0009]

According to the present invention, a stopper is provided in parallel with an anti-vibration rubber in a supporting device, the deformation amount of the anti-vibration rubber is limited by this stopper, and the displacement of a hydraulic jack is suppressed within an allowable value. It is a thing.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, a supporting device for a hydraulic jack is provided on a hydraulic jack fixing side portion fixed to the hydraulic jack, a hoistway fixing side portion fixed to a hoistway wall, and both fixing side portions. The anti-vibration rubber sandwiched and a stopper provided in parallel with the anti-vibration rubber are provided, and the stopper limits the gap between both fixed side portions to within a predetermined value.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG.
4 is a view corresponding to FIG. 4, and FIG. 2 is a bottom view of FIG. 1. In the figure, the same symbols as those in FIG. 4 indicate the same components. 2
0 and 21 are L-shaped brackets and anchor bolts 1
It is fixed to the hoistway wall 8 by 2. Reference numeral 21a is a plate fixed to the bracket 21. These anchor bolts 12, brackets 20, 21 and plates 21
The hoistway fixed side portion 22 is constituted by a.

Reference numeral 30 denotes a plate in which the foot portion of the U-bolt 14 is fixed by a nut 31, and between the plate 30 and the plate 32, a vibration-proof rubber 33, a bracket 21,
The anti-vibration rubber 33 is sandwiched, the anti-vibration rubber 33 is compressed by an appropriate amount, and the anti-vibration rubber 33 is fixed by bolts 34 and nuts 35. These U bolts 14, plates 30, 32, nuts 3
1, 35 and the bolt 34 constitute a hydraulic jack fixing side portion 36.

As described above, the hoistway fixing side portion 22 and the hydraulic jack fixing side portion 36 are connected by sandwiching the vibration-proof rubber 33 therebetween to form the support device 40 of the hydraulic jack 1. Here, the clearance d between the plates 30 and 32 and the plate 21a is set to be equal to or less than the allowable displacement amount of the hydraulic jack 1. That is, the plates 21a, 3
The stopper 50 is composed of 0 and 32. Further, the mounting hole 21 of the bracket 21 through which the bolt 34 penetrates
Reference numeral b is a stupid hole, and the gap between the bolt 34 and the mounting hole 21b is ensured to the extent of the gap d.

With the above construction, it is possible to prevent the vibration from the hydraulic jack 1 from propagating into the building, and to suppress the displacement of the hydraulic jack 1 within the allowable value without providing a stopper 16 as in the conventional case. be able to.

Although the plate 21a is fixed to the bracket 21 in the above embodiment, the plates 30 and 32 are fixed.
It can also be fixed to the side.

[0016]

As described above, according to the hydraulic jack supporting apparatus of the present invention, the vibration of the hydraulic jack
The transmission to the inside of the building can be prevented, and the displacement of the hydraulic jack can be suppressed within the allowable value without providing a separate stopper as in the conventional case.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is a bottom view of FIG.

FIG. 3 is a schematic diagram of a conventional hydraulic elevator.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a sectional view taken along line BB of FIG. 3;

[Explanation of symbols]

 1 Hydraulic jack 5 Car 7,40 Support device 8 Hoistway wall 10,11,20,21 Bracket 13,33 Anti-vibration rubber 14 U bolt 17,50 Stopper 21a, 30,32 Plate 22 Hoistway fixed side 36 Hydraulic pressure Jack fixed side

Claims (1)

[Claims] 1. A support device for supporting, on a hoistway wall, a hydraulic jack for raising and lowering an elevator car, the support device being fixed to the hoistway wall and a hydraulic jack fixing side portion fixed to the hydraulic jack. The hoistway fixed side part, the anti-vibration rubber sandwiched between both fixed side parts, and the stopper provided in parallel with this anti-vibration rubber are provided, and the gap between both fixed side parts is within a predetermined value by this stopper. A support device for a hydraulic jack for a hydraulic elevator, characterized in that