JP4388358B2 - Plunger polishing device - Google Patents

Description

  The present invention relates to a plunger polishing apparatus, and more particularly to a plunger polishing apparatus suitable for polishing a plunger provided in a hydraulic elevator.

  One of the drawbacks of hydraulic elevators is that vibrations are generated in the car and the ride quality is deteriorated. One factor of this vibration is that the finishing accuracy of the plunger outer peripheral surface of the hydraulic jack that is the drive source of the hydraulic elevator is poor.

  That is, if the finished surface of the plunger outer peripheral surface is poor, chatter vibration occurs between the plunger and the packing receiving the vibration resistance of the plunger, and this chatter vibration resonates with the natural vibration of the elevator to greatly vibrate the car. It gave the passengers in the car discomfort and anxiety.

For this reason, conventionally, in order to polish the outer peripheral surface of the plunger driven up and down, a plunger polishing apparatus having a rotor with an abrasive member mounted on the inner surface and a driving means for driving the rotor to rotate is proposed. (For example, refer to Patent Document 1).
JP-A-8-188356 (paragraph number 0015, FIG. 2)

  However, the above-described conventional plunger polishing apparatus requires an upper rotor support and a lower rotor support for supporting the rotor from above and below the upper and lower parts of the rotor, which is not only expensive. There is a problem that it is bulky in the height direction and takes time to mount.

  The present invention has been made from the above-described situation in the prior art, and an object of the present invention is to provide a plunger polishing apparatus that has a simple structure, can be made compact, and can be easily attached.

In order to achieve the above object, according to the first aspect of the present invention, there is provided a rotor having a polishing member mounted on an inner surface for polishing a plunger sliding surface driven up and down, and the rotor rotating. In a plunger polishing apparatus having a driving means for driving, a flange portion is provided on the outer periphery of the rotor, and the flange portion is rotatably supported by a plurality of upper and lower press rollers attached to the upper end of the cylinder via a scraper portion. It is characterized by doing.

  The present invention according to claim 1 configured as described above is provided with a pair of upper and lower parts that attach a rotor having an abrasive member on the inner surface to a plunger and attach a flange provided on the outer periphery of the rotor to the upper end of the cylinder. It is rotatably supported by a plurality of press rollers. By operating the driving means in this state, the rotor is driven to rotate, and the plunger is polished by the polishing member. As described above, the rotor is configured to be rotatably supported by a plurality of upper and lower press rollers provided at the upper end of the cylinder via the flange portion, so that the structure can be simplified, the size can be reduced, and it can be easily performed. Can be installed on.

  In the invention according to claim 2, a chain is wound around an upper portion of the rotor, and a sprocket provided on a motor shaft as the driving means is meshed with a roller portion of the chain to drive the rotor. It is characterized by that. In the invention according to claim 2 configured as described above, by operating the motor as the driving means, the sprocket provided on the motor shaft of the motor rotates, and meshes with the sprocket according to the rotation. The driving force is transmitted to the chain, and the rotor around which the chain is wound also rotates in synchronization.

  Furthermore, the invention according to claim 3 is characterized in that the rotor is divided into two parts, and the two divided chains are wound around and fixed to the two divided rotors. In the invention according to claim 3 configured as described above, the rotor divided into two is attached to the plunger so as to face each other, and the sprocket is meshed with a chain that is wound around and fixed to each rotor in advance. The rotor is driven by this to polish the plunger.

Furthermore, in the invention according to claim 4, the polishing member mounted on the rotor is provided so as to be movable with respect to the plunger sliding surface, and the pressing pressure of the polishing member against the plunger is adjusted via an adjusting means. It is possible to adjust from the outside of the rotor. In the invention according to claim 4 configured as described above, the pressing pressure of the polishing member against the plunger is adjusted from the outside of the rotor via the adjusting means, and the driving means is operated in this state to polish the plunger.

Since the present invention has a configuration in which a flange portion is provided on the outer periphery of the rotor, and this flange portion is rotationally supported by a plurality of upper and lower press rollers provided via a scraper portion at the upper end of the cylinder. The cost can be reduced, the size can be reduced, the mounting can be facilitated, and the workability can be improved.

  In addition, since the sprocket provided on the motor is meshed with the chain wound around the rotor, there is no need for special processing such as providing a groove on the side of the rotor, thus reducing production costs. In addition, the entire apparatus can be made compact without projecting the motor outward.

  Further, by winding and fixing the two divided chains around the two divided rotors, the troublesome work of winding the chain around the rotor and connecting the chains can be omitted, thereby improving workability. be able to.

Furthermore, by adjusting the pressing pressure of the polishing member against the plunger from the outside of the rotor , it is possible to obtain an effect that the polishing performance can be adjusted.

  Hereinafter, an embodiment of a plunger polishing apparatus according to the present invention will be described with reference to the drawings.

  FIG. 1 is an overall configuration diagram showing a main configuration of a first embodiment of the present invention, FIG. 2 is a sectional structural view of a plunger polishing apparatus, and FIG. 3 is an exploded detail view of a rotor of the plunger polishing apparatus.

  As shown in FIG. 1, the plunger polishing apparatus according to the present embodiment controls a rotor 10 having an inner surface mounted with a polishing member 11, a driving means 20 for rotationally driving the rotor 10, and the driving means 20. The control unit 30 and a scraper unit 40 provided below the rotor 10 are included.

  The rotor 10 is divided into two parts as shown in FIGS. 2 and 3, and the outer periphery of the rotor 10 is rotatably supported by a plurality of upper and lower press rollers 51 and 52 attached to the upper end of the cylinder, that is, the ground part 1. A portion 12 is provided. In addition, a chain 13 that is wound around and fixed to the upper part of each of the two divided rotors 10, a polishing member 11 that is provided on the inner side thereof and is in sliding contact with the plunger 2, and a mounting plate 14 to which the polishing member 11 is attached, The rod 16 is provided on the mounting plate 14 and is inserted into the hole 15 formed in the rotor 10 and has a thread formed on the outer periphery thereof. The rod 16 is attached to the rod 16 and rotates with the mounting plate 14. A spring 17 interposed between the child 10 and a pressing pressure adjusting nut 18 provided on the outer periphery of the rotor 10 and screwed to the rod 16 are provided. The rod 16, the spring 17 and the pressing pressure adjusting nut 18 constitute an adjusting means.

  Further, as shown in FIG. 2, the lower presser roller 51 and the upper presser roller 52 are attached to the scraper unit 40 and the upper presser roller 52 is attached to a roller bracket 53 connected to the scraper unit 40. It is attached, and the collar portion 12 is sandwiched between the lower presser roller 51 and the upper presser roller 52 with a slight gap.

  As shown in FIG. 2, the driving means 20 includes a motor 23 supported by a motor bracket 22 that is fastened to the scraper portion 40 with mounting bolts 21, and a sprocket 24 provided on a motor shaft 23 a of the motor 23. The rotor 10 is driven when the sprocket 24 meshes with the roller portion 13 a of the chain 13.

  Further, the scraper unit 40 is divided into a scraper mounting plate 41 divided into two, a scraper 42 attached to the scraper mounting plate 41 and slidably contacted with the surface of the plunger 2, and a scraper presser plate 43 to which the lower presser roller 51 is mounted. The scraper mounting plate 41 and the scraper presser plate 43 are fastened together with the mounting bolt 21 via a joint nut 44 to the gland bolt 1a.

  In the present embodiment, when the plunger 2 is polished, the operator first moves to the ground portion 1 on a car (not shown). Here, a plurality of joint nuts 44 are attached to the gland bolt 1a, and the scraper part 40 is assembled. That is, the scraper mounting plate 41 and the scraper pressing plate 43 are sequentially incorporated, and the scraper 42 is brought into contact with the surface of the plunger 2. At this time, the lower presser roller 51 attached to the scraper presser plate 43 is also incorporated. Next, the pair of rotors 10 are attached so as to sandwich the plunger 2, the rotors 10 are coupled to each other, and the polishing member 11 is brought into contact with the surface of the plunger 2. Thereafter, the roller bracket 53 to which the upper presser roller 52 is attached is connected to the scraper presser plate 43, so that the lower presser roller 51 and the upper presser roller 52 previously assembled together with the scraper presser plate 43 can be Part 12 is sandwiched. Next, the motor 23 is attached to the scraper presser plate 43 with the mounting bolt 21 via the motor bracket 22, the sprocket 24 provided on the motor shaft 23 a is engaged with the roller portion 13 a of the chain 13, and the control unit that controls the motor 23. 30 is placed on the car or in a hoistway (not shown). In addition, the operator adjusts the pressing pressure of the polishing member 11 against the plunger 2 by screwing the pressing pressure adjusting nut 18 in the direction of the plunger 2 or screwing it away from the plunger 2.

  In this state, the operator operates the control unit 30 to operate the plunger polishing apparatus. When the motor 23 rotates, the rotor 10 rotates through the sprocket 24 and the chain 13, and the surface of the plunger 2 is polished by the polishing member 11. The plunger 2 is moved up and down by raising and lowering a car (not shown), and polishing is performed over the entire length of the plunger 2. At this time, stress acts on the rotor 10 in the vertical direction according to the vertical movement of the plunger 2, but the upper pressing roller 52 and the lower pressing roller 51 support the flange 12 at the lower end of the rotor 10. The rotor 10 does not move up and down.

  In the present embodiment configured as described above, the collar portion 12 is provided on the outer peripheral portion of the rotor 10, and the collar portion 12 is rotatably supported by a pair of upper and lower press rollers 51 and 52 provided at the upper end of the cylinder. Therefore, the production cost can be reduced with a simple structure, the size can be reduced, the mounting can be facilitated, and the workability can be improved. Further, since the sprocket 24 provided in the motor 23 is meshed with the chain 13 wound around the rotor 10, no special processing such as providing a groove on the side of the rotor 10 is required. The production cost can be reduced and the entire apparatus can be made compact without the motor 23 projecting outward. Further, by winding and fixing the two divided chains 13 around the two divided rotors 10, the troublesome work of winding the chain 13 around the rotor 10 and connecting the chains 13 can be omitted. It is possible to improve the performance. Furthermore, the polishing performance can be adjusted by adjusting the pressing pressure of the polishing member 11 against the plunger 2 from the outside of the rotor 10.

It is a whole lineblock diagram showing the important section composition of a 1st embodiment of the present invention. It is a cross-section figure of a plunger polisher. It is a disassembled detail drawing of the rotor of a plunger grinding | polishing apparatus.

Explanation of symbols

2 Plunger 10 Rotor 11 Polishing member 12 Hook 13 Chain 13a Roller 16 Rod (Adjustment means)
17 Spring (Adjustment means)
18 Pressure adjustment nut (Adjustment means)
20 Drive means 23 Motor 23a Motor shaft 24 Sprocket 30 Control means 40 Scraper part 51 Lower presser roller 52 Upper presser roller

Claims (4)

In order to polish the plunger sliding surface that is driven up and down, in a plunger polishing apparatus comprising a rotor having an abrasive member mounted on the inner surface, and a driving means for rotationally driving the rotor,
A plunger polishing apparatus, wherein a flange portion is provided on the outer periphery of the rotor, and the flange portion is rotatably supported by a plurality of upper and lower press rollers attached to the upper end of the cylinder via a scraper portion . In the invention of claim 1,
A plunger polishing apparatus characterized in that a chain is wound around an upper portion of the rotor, a sprocket provided on a motor shaft as the driving means is meshed with a roller portion of the chain, and the rotor is driven. In the invention of claim 2,
2. The plunger polishing apparatus according to claim 1, wherein the rotor is divided into two, and the two divided chains are wound around and fixed to the two divided rotors. In the invention of claim 1,
The polishing member mounted on the rotor is provided so as to be movable with respect to the plunger sliding surface, and the pressing force of the polishing member against the plunger can be adjusted from the outside of the rotor via an adjusting means. A plunger polishing apparatus characterized by the above.

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