JPH08188356A - Plunger refinish processing device of hydraulic elevator - Google Patents

Abstract

PURPOSE: To provide a plunger refinish processing device to carry out the refinish processing by polishirig a deflected abrasion of the plunger sliding surface of a hydraulic elevator automatically. CONSTITUTION: The main device of a plunger refinish processing device has an upper rotator support 19; a rotator 18 on whose inner surface a polishing member is installed; and a lower rotator support 20; and those members are fixed to the screw holes of a flange 8b by four assembling bolts 25 through a rotator assembly sleeve 23, a height regulating sleeve 24, and the holes of a pressure plate 8a, so as to fix the main device on a hydraulic jack cylinder 8. Enbedded balls are installed rotatable to the upper and the lower surfaces of the rotator 18, and grooves where the parts of the spherical surfaces of the enbedded balls are abutted are formed in a circumferential form on the surfaces the upper rotator support 19 and the lower rotator support 20 are abutted to the rotator 18. When a driving motor 21 is operated, and a rotating power is fed to the rotator 18 through a relay V belt 22, the sliding surface of a plunger 9 can be polished.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plunger refinishing apparatus for a hydraulic elevator, and more particularly to a plunger refinishing apparatus for a hydraulic elevator for automatically polishing a sliding surface of a plunger.

[0002]

2. Description of the Related Art FIG. 8 schematically shows the structure of a hydraulic elevator. An elevator machine room 2 is provided below the hoistway wall 1, and an elevator control panel 3 for controlling the operation of the car 4 is arranged in the elevator machine room 2. On the other hand, on the upper surface of the car 4, the car 4
A car operation control device 5 for controlling the operation of the car 4 by an operator 40 on the upper surface of the car is mounted. Further, the car operation control device 5 is electrically connected to the car operation switch 6 and is operated by the worker 40. Further, the car 4 and the elevator control panel 3 are electrically connected by a control cable 7.

A hydraulic jack cylinder 8 is arranged in the elevator hoistway, and a plunger 9 which is driven up and down by oil fed into the hydraulic jack cylinder 8 is provided at the tip of the hydraulic jack cylinder 8. A pulley 10 is attached to the top of the plunger 9 via a pulley mount 10a. Further, one end of the suspension rope 11 hung on the pulley 10 is connected to the hoistway of the elevator, and the other end is connected to the car 4. Further, a flange 8b and a pressure plate 8a are arranged at the tip of the hydraulic jack cylinder 8 to seal the hydraulic jack cylinder 8. A bracket 12 is attached to the hoistway wall 1, and a hydraulic jack cylinder 8 is fixed to the bracket 12 by a U bolt 12a attached to the tip of the bracket 12.

In this type of hydraulic elevator, due to uneven wear of the sliding surface of the plunger 9 and poor fitting dimensions with the metal and packing inside the hydraulic jack cylinder 8,
Vibrations occur when the elevator is started or while traveling.

Therefore, conventionally, in order to improve this phenomenon, an operator 50 rides on the bracket 12 or beam in the hoistway and manually refinishes the sliding surface of the plunger 9 with sandpaper 13. Was there.

That is, when the sliding surface of the plunger 9 is to be refinished, the worker 50 first makes the hoistway wall 1
Riding on the bracket 12 attached to the hydraulic jack cylinder 8, a waste cloth 9a is placed on the pressure plate 8a in order to prevent shavings generated during refinishing from entering the hydraulic jack cylinder 8. Then, the sandpaper 13 is spirally wound around the plunger 9, and the sliding surface of the plunger 9 is scraped by holding both ends of the sandpaper 13 with both hands. When the refinishing of a part of the sliding surface of the plunger 9 is completed, the worker 40 operates the car operation switch 6 to raise or lower the car to change the protrusion amount of the plunger 9. After that, the worker 50 again uses the sandpaper 1
Wrap 3 around the plunger 9 and scrape the sliding surface of the plunger 9. Similarly, the worker 40 moves the car 4 little by little, and each time the worker 50 moves the plunger 9
The sliding surface of is scraped, and the sliding surface is refinished over the entire length of the plunger 9.

[0007]

However, when the re-finishing of the sliding surface of the plunger is performed by the pair of two workers as described above, one of the workers is placed in a narrow and high place of the hoistway wall. In order to work on the bracket that is located, care must be taken to step off the foot and balance the body, and sandpaper must be used to force the polishing of the entire sliding surface of the plunger. It was Furthermore,
Polishing of the plunger is a manual process, which causes variations in the quality of the finish of the sliding surface of the plunger.

Further, since the waste cloth has a weak adhesion to the plunger, shavings may be mixed in the hydraulic jack cylinder. Furthermore, two workers were always required for this work, and the work efficiency was poor.

The present invention has been made in view of the above problems, and an object of the present invention is to plan a hydraulic elevator in which the uneven wear of the sliding surface of the plunger of the hydraulic elevator is automatically ground to perform refinishing. It is to provide a jar refinishing device.

[0010]

In order to solve the above problems, the plunger refinishing apparatus for a hydraulic elevator according to the present invention has the following features.

(1) In a hydraulic elevator having a plunger that is driven up and down by hydraulic pressure in a hydraulic jack cylinder in order to move an elevator riding basket up and down, polishing for polishing the sliding surface of the plunger. A rotor having a member mounted on an inner surface thereof; a rotor support that rotatably supports the rotor from above and below and is fixed on the hydraulic jack cylinder; and a rotation driving unit that supplies rotational power to the rotor. With.

(2) In the plunger refinishing apparatus for hydraulic elevator according to (1) above, the rotor comprises a rotor left and a rotor right, and the rotor support is an upper rotor. It is composed of a support and a lower rotor support, and the upper rotor support and the lower rotor support are provided in a pair of left and right corresponding to the rotor left and the rotor right, respectively, and are easily mounted.

(3) In the plunger refinishing apparatus for a hydraulic elevator as described in (1) above, embedded balls are rotatably attached to the upper and lower surfaces of the rotor in a circular shape, while A circumferential groove is formed on a surface of the rotor support that contacts the embedded ball, so that the rotor support rotates smoothly.

(4) In the plunger refinishing apparatus for a hydraulic elevator as described in (1) above, the rotor support is provided with the above-mentioned means for preventing scattering of shavings on the sliding surface of the plunger by the polishing member. A flexible member that is in close contact with the sliding surface of the plunger is attached.

[0015]

According to the plunger refinishing apparatus for a hydraulic elevator according to the present invention constructed as described above, if the rotor having the polishing member mounted on the inner surface is rotated by the rotation driving means, The operator can easily grind the entire length of the sliding surface of the plunger simply by operating the car operation switch on the car. Also, by supporting the rotor rotatably from above and below by the rotor support and fixing it on the hydraulic jack cylinder, the operator only needs to raise or lower the car to reduce the total length of the plunger sliding surface. It can be easily polished. With the above configuration, variations in manual refinishing can be eliminated.

The rotor comprises a rotor left and a rotor right, the rotor support comprises an upper rotor support and a lower rotor support, and the upper rotor support and the lower rotor support respectively rotate. By providing the left and right pairs corresponding to the child left and the rotor right, it becomes easy to mount the present device on the hydraulic jack cylinder. This improves work efficiency.

Further, a plurality of embedded balls are rotatably mounted on the upper surface and the lower surface of the rotor in a circular shape, and a circular groove is formed on the surface of the upper and lower rotor supports which comes into contact with the embedded balls. As a result, the rotor can be rotated smoothly and the plunger sliding surface can be carefully polished.

Since the rotor support is equipped with a flexible member that is in close contact with the plunger sliding surface, shavings on the plunger sliding surface due to the polishing member attached to the rotor will be removed in the hydraulic jack cylinder. Can be prevented from being mixed in.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.

Example 1. FIG. 1 is a diagram for explaining the overall configuration of a plunger refinishing device for a hydraulic elevator according to a first embodiment of the present invention, and FIG. 2 is an enlarged perspective view of part A of FIG. 3 is a cross-sectional view of the main device of the refinishing device of FIG. 2, and FIG. 4 is an exploded partial cross-sectional perspective view of the main device of the plunger refinishing device of FIG. FIG. 5 is a diagram illustrating the configuration of the refinishing mechanism portion. 6 is a diagram for explaining the principle of refinishing of the present invention, and FIG. 7 is a diagram for explaining the finished surface of the plunger by the plunger refinishing device of the present invention.

First, a plunger refinishing apparatus for a hydraulic elevator according to a first embodiment of the present invention will be described. The same components as those of the conventional hydraulic elevator are designated by the same reference numerals and the description thereof will be omitted.

The portion A surrounded by the one-dot chain line in FIG. 1 is the main device of the plunger refinishing apparatus of this embodiment.
Further, the control unit 16 of the main device is installed on the car 4. The control unit 16 is electrically connected to the car operation control device 5 by a control signal cable 16a and a power cable 16b. The main device and the control unit 16 are electrically connected by a control cable 17.

As shown in FIG. 2, the main device is roughly divided into a rotor 18, an upper rotor support 19 for supporting the rotor 18 on the upper side, and a lower rotor for supporting the rotor 18 on the lower side. It comprises a support 20 and a drive means including a drive motor 21 and a joint V-belt 22.

As shown in FIG. 2, the rotor 18, the upper rotor support 19 and the lower rotor support 20 are each divided into two parts, and the assembling bolts 18c, 19c, 2
By assembling with the rotor 0, the inside of the rotor 18, the upper rotor support 19 and the lower rotor support 20 is the plunger 9
It becomes a cylindrical shape to surround. Further, each inner diameter is slightly larger than the outer diameter of the plunger 9 shown in FIG. 3 and does not directly contact the plunger 9.

Next, each structure will be described.

As shown in FIGS. 3 and 4, the rotor 18
Consists of a rotor left 18a and a rotor right 18b. A plurality of upper embedded balls 18d are rotatably attached to the upper surfaces of the rotor left 18a and the rotor right 18b, respectively, in a circumferential shape. Further, a plurality of lower embedded balls 18e are rotatably attached to the lower surfaces of the rotor left 18a and the rotor right 18b, respectively, in a circumferential shape. A rotor groove 18f carved in a V shape is formed on the side surface of the rotor 18 over the entire circumference. A polishing member mounting groove 18g is formed on the inner surface of the rotor left 18a and the rotor right 18b. As shown in FIG. 5, in the polishing member mounting groove 18g, the leaf spring 18h, the pressing plate 18i, and the sandpaper 1 are provided.
3 is fitted. As shown in FIG. 3, the sandpaper 13 is fixed by the pressing plate 18i having the same arc surface as the outer diameter of the plunger 9, and pressed against the sliding surface of the plunger 9 by the plate spring 18h.

Next, the upper rotor support 19 will be described. As shown in FIGS. 3 and 4, the upper rotor support 19 is
It consists of an upper rotor support left 19a and an upper rotor support right 19b. Upper rotor support grooves 19f are formed in semicircular shapes on the lower surfaces of the upper rotor support left 19a and the upper rotor support right 19b, respectively, so as to contact a part of the spherical surface of the upper embedded ball 18d of the rotor 18. ing. And the upper rotor support groove 1
9f is an upper rotor support left 19a and an upper rotor support right 19b
When assembled with, it becomes a circumferential groove. Upper rotor support 1
As shown in FIG. 4, a flexible upper rotor supporting felt groove 19d is formed on the inner surface of the inner peripheral surface 9 of the inner peripheral surface of the inner peripheral surface of the inner peripheral surface 9. It is mounted over the entire circumference so as to project from the felt groove 19d toward the plunger 9. That is, the upper rotor support felt 19e has a size that is in close contact with the sliding surface of the plunger 9 in order to prevent the shavings of the plunger 9 by the sandpaper 13 from entering the hydraulic jack cylinder 8. .

Next, the structure of the lower rotor support 20 will be described. The lower rotor support 20 includes a lower rotor support left 20a and a lower rotor support right 20b. Lower rotor support left 20
A lower rotor support groove 20f is formed in a semicircular shape on the upper surfaces of a and the lower rotor support right 20b so as to contact a part of the spherical surface of the lower embedded ball 18e of the rotor 18. When the lower rotor support groove 20f is assembled with the lower rotor support left 20a and the lower rotor support right 20b,
It becomes a circumferential groove. The inner surface of the lower rotor support 20 is shown in FIG.
As shown in FIG. 5, a flexible upper rotor supporting felt groove 19d is formed over the entire circumference, and for example, a lower rotor supporting felt 20e having a rectangular cross section has a lower rotor supporting felt groove 20d.
It is attached over the entire circumference so as to project from d toward the plunger 9. That is, the upper rotor support felt 20e has a size that is closely attached to the sliding surface of the plunger 9 in order to prevent the shavings of the plunger 9 by the sandpaper 13 from entering the hydraulic jack cylinder 8. .

The upper rotor support 19 and the rotor 1 described above are also provided.
8 and the lower rotor support 20, as shown in FIG. 2 and FIG.
It is fixed to the screw hole of the flange 8b through the holes of the rotor assembling sleeve 23, the height adjusting sleeve 24, and the pressure plate 8a by four assembly bolts 25. Pressure plate 8
The hole a is a hole from which the pressure plate mounting bolt 26 is removed.
As a result, the main device of the refinishing device is fixed on the hydraulic jack cylinder 8.

The drive motor 21 shown in FIG. 2 supplies rotational power to the rotor 18. The pulley 21b of the drive motor 21 and the rotor groove 18f are connected by a joint V belt 22. As described above, in this device, the rotor 18, the upper rotor support 19, and the lower rotor support 20 are divided into two, so that the joint V-belt 22 is installed in the rotor groove 1 when assembled.
8f and pulley 21b, and then continue. The drive motor 21 is attached to the drive motor mounting plate 27,
The drive motor mounting plate 27 is fixed to the upper rotor supporting right 19b and the lower rotor supporting right 20b by four adjusting bolts 28. The adjustment bolt 28 also adjusts the tension of the joint V-belt 22.

Further, the safety switch 29 shown in FIG. 2 is a switch for preventing the pulley mount 10a and the upper rotor support 19 from colliding with each other when the plunger 9 descends. When the switch 29 operates, the driving circuit of the car 4 is cut off. The cam 15 shown in FIG.
This is a cam that operates the safety switch 29.

Further, as shown in FIG. 2, the drive motor cable 21a and the safety switch cable 29a are connected and integrated with the control cable connector 17a, and are connected to the control cable 17 of the main unit of the refinishing apparatus. It is connected to the control unit 16. Further, the connecting portion 16 is the control signal cable 1
6a and the power cable 16b are electrically connected to the car operation control device 5.

Next, the operation of the plunger refinishing apparatus (hereinafter referred to as "this apparatus") of this embodiment will be described.

First, the worker 40 rides on the bracket 12 of the hoistway wall 1 and presses the pressure plate 8a of the hydraulic jack cylinder 8.
Upper rotor 18, upper rotor support 19, lower rotor support 2
No. 0, the drive motor 21 and other main devices of this device are assembled and mounted. Although the cam 15 is attached to the pulley mount 10a, it may be attached in advance. afterwards,
The worker 40 operates the riding control unit 16 on the car 4. As a result, the drive motor 21 of the present apparatus is powered, and the rotation of the drive motor 21 causes the pulley 21b to rotate.
And the joint V-belt 22 connected to the rotor groove 18f operates, and a rotational force is applied to the rotor 18. As described above, the rotor 18 is in contact with the upper rotor support 19 and the lower rotor support 20 only by part of the spherical surfaces of the upper embedded ball 18d and the lower embedded ball 18e, respectively. Therefore, the rotor 18 can rotate smoothly. In addition, the rotor 18
Is rotated, the sandpaper 13 pressed against the sliding surface of the plunger 9 by the leaf spring 18h.
However, the sliding surface of the plunger 9 is scraped. Therefore, with the present device fixed to the pressure plate 8a of the hydraulic jack cylinder 8, the worker 40 operates the car operation switch 6 to raise or lower the car 4 to change the protrusion amount of the plunger 9. Thus, refinishing can be performed uniformly over the entire length of the sliding surface of the plunger 9. Further, the shavings of the plunger 9 scraped by the sandpaper 13 are prevented from being scattered by the upper rotor supporting felt 19e and the lower rotor supporting felt 20e, and further, the shavings of the plunger 9 are kept in the hydraulic jack cylinder. Can be prevented from being mixed in.

When the operator 40 operates the car operation switch 6 and the plunger 9 moves down, the cam 15 operates the safety switch 29, so that the operation circuit of the car 4 is shut off. Therefore, it is possible to prevent the pulley mounting base 10a and the upper rotor support 19 from colliding with each other.

As described above, since the device scrapes the sliding surface of the plunger 9 by the operation of the operator on the car,
It requires only one worker and eliminates the need to work on the bracket of the hoistway wall. Therefore, it is possible to reduce the number of workers and perform safe work. In addition, FIG.
According to the principle of the car 4 while rotating the rotor 18
When the machine is moved up or down, the shaving pattern shown in FIG. 7 is obtained, so that highly accurate finishing quality can be secured.
Further, the upper rotor support felt 19e and the lower rotor support felt 20e can prevent the shavings of the sandpaper 13 from entering the hydraulic jack cylinder 8.

In this apparatus, the rotor 18, the upper rotor support 19, and the lower rotating support 20 may be integrally formed. In this case, if the pulley 10 and the pulley mount 10a on the top of the plunger 9 are removed and the protrusion amount of the plunger 9 is minimized, the main device of this device can be mounted on the hydraulic jack cylinder 8. it can.

Example 2. In this embodiment, the joint V in FIG.
The belt 22 is a chain. And the pulley 21b
Also, by changing the rotor groove 18f to a sprocket, a power transmission mechanism can be provided in which a large force can be reliably transmitted to the rotor 18.

Example 3. In the present embodiment, the upper rotor support left 19a and the lower rotor support left 20a in FIG. 4 are integrally formed as a rotor support left, while the upper rotor support right 19b and the lower rotor support right 20b are integrally formed. Then, support the rotor on the right. This eliminates the rotor assembly sleeve 23. With this structure, the assembly is further facilitated, the center deviation between the upper rotor support 19 and the lower rotor support 20 is eliminated, and the vibration of the rotor 18 due to the center deviation can be prevented. Therefore, the quality of refinishing of the plunger 9 is improved.

Example 4. In this embodiment, the leaf spring 18h in FIG. 5 is made of a rubber material having elasticity. Thereby, the pressing member of the sandpaper 13 can be easily mounted in the polishing member mounting groove 18g on the side surface of the rotor.

Example 5. In this embodiment, a grindstone having the same arc surface as the outer diameter of the plunger 9 is attached instead of the sandpaper 13 and the pressing plate 18i in FIG. As a result, it can be further easily mounted in the polishing member mounting groove 18g on the side surface of the rotor.

[0042]

As described above, according to the plunger refinishing apparatus for a hydraulic elevator according to the present invention, if the rotor having the polishing member mounted on the inner surface is rotated by the rotation driving means, The operator can easily grind the entire length of the sliding surface of the plunger simply by operating the car operation switch on the car. Also, by supporting the rotor rotatably from above and below by the rotor support and fixing it on the hydraulic jack cylinder, the operator only needs to raise or lower the car to reduce the total length of the plunger sliding surface. It can be easily polished. Therefore,
With the above configuration, variations in manual refinishing can be eliminated.

The rotor comprises a rotor left and a rotor right, the rotor support comprises an upper rotor support and a lower rotor support, and the upper rotor support and the lower rotor support respectively rotate. By providing a pair of left and right corresponding to the child left and the rotor right, the present device can be easily attached to the hydraulic jack cylinder. This improves the work efficiency of the plunger refinishing process.

Further, a plurality of embedded balls are rotatably mounted on the upper and lower surfaces of the rotor in a circular shape, and a circular groove is formed on the surface of the upper and lower rotor supports which comes into contact with the embedded balls. As a result, the rotor can be rotated smoothly and the plunger sliding surface can be carefully polished. Therefore, it is possible to eliminate the uneven wear of the sliding surface of the plunger 9, and the occurrence of vibration at the time of starting the elevator or during traveling due to a defective fitting dimension with the metal and packing inside the hydraulic jack cylinder 8.

Since the rotor support is equipped with a flexible member that is in close contact with the plunger sliding surface, shavings on the plunger sliding surface due to the polishing member attached to the rotor will be removed inside the hydraulic jack cylinder. Can be prevented from being mixed in.

As described above, according to the present invention, one worker is
After mounting the device on the hydraulic jack cylinder, the sliding surface of the plunger can be polished without variations in the finishing process only by raising or lowering the car operation switch on the car. Further, it is possible to prevent the shavings from being mixed into the hydraulic jack cylinder.

[Brief description of drawings]

FIG. 1 is a diagram illustrating an entire configuration of a plunger refinishing device for a hydraulic elevator according to a first embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a portion A of FIG.

3 is a cross-sectional view of a main device of the refinishing device of FIG.

FIG. 4 is an exploded partial cross-sectional perspective view of the main device of the plunger refinishing device of FIG.

FIG. 5 is a diagram illustrating a configuration of a refinishing mechanism portion.

FIG. 6 is a diagram illustrating the principle of refinishing according to the present invention.

FIG. 7 is a diagram illustrating a finished surface of the plunger by the plunger refinishing device of the present invention.

FIG. 8 is a schematic view of the structure of a hydraulic elevator.

[Explanation of symbols]

1 lift furnace wall, 2 elevator machine room, 3 elevator control panel, 4 car, 5 car operation control device, 6 car operation switch, 7 control cable, 8 hydraulic jack cylinder, 8a pressure plate, 8b flange, 9 plunger, 10 pulleys, 10a pulley mounts, 12 brackets, 40 workers, 15 cams, 16 controls, 1
8 rotor, 19 upper rotor support, 20 lower rotor support, 21 drive motor, 22 joint V belt, 23 rotor assembly sleeve, 24 height adjustment sleeve, 25 assembly bolt, 27 drive motor mounting plate 28 adjustment bolt, 29 Safety switch.

Claims (4)

[Claims] 1. A hydraulic elevator having a plunger that is driven up and down by hydraulic pressure in a hydraulic jack cylinder to move an elevator car up and down. A polishing member for polishing the plunger sliding surface. A rotor mounted on the inner surface, a rotor support that rotatably supports the rotor from above and below and is fixed on the hydraulic jack cylinder, and a rotation driving unit that supplies rotational power to the rotor, A plunger refinishing device for a hydraulic elevator, comprising: 2. The plunger refinishing device for a hydraulic elevator according to claim 1, wherein the rotor comprises a rotor left and a rotor right, and the rotor support is an upper rotor support. A lower rotor support, and an upper rotor support and a lower rotor support are provided in a pair of left and right corresponding to the rotor left and rotor right, respectively, and are easily mounted. Elevator plunger refinishing equipment. 3. The plunger refinishing device for a hydraulic elevator according to claim 1, wherein embedded balls are rotatably mounted on the upper surface and the lower surface of the rotor in a circular shape while the rotor is being rotated. To support
A plunger refinishing device for a hydraulic elevator, characterized in that a circumferential groove is formed on a surface that comes into contact with the embedded ball, and the surface rotates smoothly. 4. The plunger refinishing apparatus for a hydraulic elevator according to claim 1, wherein the rotor support is provided with the plunger for preventing scattering of shavings on a sliding surface of the plunger by the polishing member. A plunger refinishing device for a hydraulic elevator, which is equipped with a flexible member that is in close contact with a sliding surface.