WO2019186826A1

WO2019186826A1 - Sheave shaft grease cleaning tool for elevator

Info

Publication number: WO2019186826A1
Application number: PCT/JP2018/012962
Authority: WO
Inventors: 拓朗松本
Original assignee: 三菱電機ビルテクノサービス株式会社
Priority date: 2018-03-28
Filing date: 2018-03-28
Publication date: 2019-10-03
Also published as: JP6558502B1; CN111770889A; CN111770889B; JPWO2019186826A1

Abstract

Provided is a sheave shaft grease cleaning tool for an elevator, which is capable of easily removing grease stuck to a sheave shaft. A sheave shaft grease cleaning tool (11) for an elevator according to the present invention is provided with: a rod (12); an operation part (13) that is provided to the rod (12); a pair of opening/closing members (15) that are connected to an end of the rod (12), that are opposed to each other without contact, and that are brought close to or away from each other in accordance with an operation to the operation part (13); and a pair of flat members (16) that are elastic and provided so as to project inward from the tips of the opening/closing members (15).

Description

Elevator sheave shaft grease cleaning jig

This invention relates to an elevator sheave shaft grease cleaning jig.

The rope type elevator is equipped with a sheave around the rope in the hoistway. As a rope type elevator, there exists a thing described in the following patent document 1, for example.

International Publication No. 2003/031310

When grease is applied to the sheave of the elevator, the grease overflows on the exposed part of the sheave shaft. It takes time to clean the grease adhering to the sheave shaft. In particular, in the case of an elevator without a machine room, it is not easy to remove the grease adhering to the exposed portion of the sheave shaft because the distance between the sheave and the sheave cover is narrow.

This invention has been made to solve the above-mentioned problems. An object of the present invention is to provide an elevator sheave shaft portion grease cleaning jig capable of easily removing the grease adhering to the sheave shaft.

An elevator sheave shaft portion grease cleaning jig according to the present invention is connected to a rod portion, an operation portion provided on the rod portion, and an end portion of the rod portion, opposed to each other without being in contact with each other, and operated on the operation portion. And a pair of opening and closing members that are separated from each other or approached according to each other, and a pair of flat members that have elasticity and project inwardly from the tips of the pair of opening and closing members.

According to the present invention, the pair of flat members have elasticity and are provided so as to protrude inward from the tips of the pair of opening and closing members. For this reason, the grease adhering to the sheave shaft can be easily removed.

It is a schematic diagram which shows an example of the structure of an elevator. It is a front view of a return wheel. It is a side view of a return wheel. FIG. 3 is a front view of a sheave shaft portion grease cleaning jig in the first embodiment. FIG. 3 is a side view of the sheave shaft portion grease cleaning jig in the first embodiment. FIG. 5 is a first diagram illustrating how to use the sheave shaft portion grease cleaning jig in the first embodiment. FIG. 6 is a second view showing how to use the sheave shaft portion grease cleaning jig in the first embodiment. FIG. 10 is a third diagram illustrating how to use the sheave shaft portion grease cleaning jig in the first embodiment. FIG. 10 is a fourth diagram illustrating how to use the sheave shaft portion grease cleaning jig in the first embodiment.

Hereinafter, embodiments will be described with reference to the accompanying drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals. The overlapping description will be simplified or omitted as appropriate.

Embodiment 1 FIG.
Drawing 1 is a mimetic diagram showing an example of the structure of an elevator. FIG. 1 illustrates a structure in a hoistway of a rope elevator without a machine room type.

As shown in FIG. 1, the elevator 1 includes a hoisting machine 2, a rope 3, a car 4, and a counterweight 5. The elevator 1 includes a plurality of sheaves provided in a hoistway. As the sheave in the hoistway, for example, a car suspension car 6, a weight suspension car 7, and a return wheel 8 are provided. A plurality of car suspension wheels 6 are provided below the car 4, for example. For example, a plurality of return wheels 8 are provided at the upper part of the hoistway. Some return wheels 8 may be different in size from other return wheels 8.

The rope 3 is wound around the hoisting machine 2, the car suspension car 6, the weight suspension car 7 and the return wheel 8, for example. The end of the rope 3 is supported by, for example, a beam (not shown) in the hoistway. The car 4 is suspended in the hoistway by the rope 3 via the car suspension wheel 6. The counterweight 5 is suspended in the hoistway by the rope 3 via the weight suspension wheel 7. The car 4 and the counterweight 5 move up and down when the hoist 2 is driven. The hoisting machine 2 is controlled by a control device (not shown).

Fig. 2 is a front view of the return wheel. FIG. 3 is a side view of the return wheel. 2 and 3 are diagrams schematically showing an example of the structure of the sheave.

The rope 3 is wound around the upper side of the return wheel 8. A plurality of ropes 3 are provided, for example. Each rope 3 is wound along each rope groove of the return wheel 8. A sheave cover 9 is provided around the return wheel 8. The sheave cover 9 is supported by, for example, a beam (not shown) in the hoistway. The sheave cover 9 covers, for example, the front surface, top surface, and back surface of the return wheel 8. The sheave cover 9 does not cover the lower surface and side surfaces of the return wheel 8, for example. The sheave shaft 10 of the return wheel 8 is fixed so as to connect, for example, the front side portion and the back side portion of the sheave cover 9.

As shown in FIG. 3, the portion of the sheave shaft 10 located between the return wheel 8 and the sheave cover 9 is exposed. The length of the exposed portion of the sheave shaft 10 corresponds to the distance in the horizontal direction between the front or back surface of the return wheel 8 and the sheave cover 9. The interval is, for example, about 10 mm to 15 mm. When grease overflows in the exposed portion of the sheave shaft 10, it is necessary to clean the adhered grease.

FIG. 4 is a front view of the sheave shaft grease cleaning jig in the first embodiment. FIG. 5 is a side view of the sheave shaft portion grease cleaning jig in the first embodiment.

The sheave shaft portion grease cleaning jig 11 includes, for example, a rod portion 12, an operation portion 13, a connecting portion 14, a pair of opening / closing members 15, a pair of flat members 16, an irradiation portion 17, and a grease receiving portion 18.

The rod portion 12 is formed in a rod shape or a cylindrical shape, for example. For example, the thickness of the rod portion 12 is smaller than the distance between the return wheel 8 and the sheave cover 9 in the horizontal direction. The length of the rod portion 12 is, for example, greater than half the height of the sheave cover 9. The length of the rod part 12 is larger than the radius of the return wheel 8, for example. The rod part 12 may be formed to be extendable and contractible, for example.

The operation unit 13 is provided on the rod unit 12. The operation part 13 is arrange | positioned below the center in the longitudinal direction of the rod part 12, for example. The operation unit 13 is, for example, a button or lever that can be operated with one hand.

The connecting portion 14 is provided at the upper end portion of the rod portion 12. The pair of opening / closing members 15 are coupled to the upper end portion of the rod portion 12 via the coupling portion 14.

The opening / closing member 15 is made of a material such as iron, for example. The opening / closing member 15 is formed in an arc shape when viewed from the front, for example. The lower end of the opening / closing member 15 is located inside the connecting portion 14. For example, the pair of opening / closing members 15 are arranged symmetrically about the axis of the rod portion 12. The left opening / closing member 15 is arranged such that the upper end is directed to the right. The right opening / closing member 15 is arranged such that the upper end is directed to the left. The upper ends of the pair of opening / closing members 15 oppose each other in the left-right direction.

The pair of opening / closing members 15 perform an opening / closing operation of separating or approaching each other according to an operation on the operation unit 13. The opening / closing mechanism of the pair of opening / closing members 15 is provided, for example, inside the connecting portion 14 and the rod portion 12.

The pair of opening / closing members 15 are in an open state by performing an operation on the operation unit 13, for example. For example, the pair of opening / closing members 15 maintains a closed state when the operation unit 13 is not operated. In this case, the opening / closing mechanism is configured to apply forces in a direction approaching each other to the pair of opening / closing members 15.

FIG. 4 shows a state in which the pair of opening / closing members 15 are closed. The range that the pair of opening / closing members 15 surrounds is larger than the cross section of the sheave shaft 10.

In the state shown in FIG. 4, the upper ends of the pair of opening / closing members 15 do not contact each other. That is, the pair of opening / closing members 15 face each other in the left-right direction without contacting each other even in the closest state.

The flat member 16 is formed in a plate shape or a spatula shape, for example. The pair of flat members 16 are provided so as to protrude from the upper end of the opening / closing member 15 toward the axis of the rod portion 12 when viewed from the front. A flat member 16 provided on the left opening / closing member 15 projects rightward. A flat member 16 provided on the right opening / closing member 15 projects leftward. The tips of the pair of flat members 16 face or contact each other in the left-right direction, for example.

The flat member 16 is formed of an elastic material such as hard rubber, for example. When the flat member 16 receives a force in the vertical direction, the flat member 16 is formed to bend while repelling the force.

The flat member 16 includes, for example, an upper flat member 16a, a central flat member 16b, and a lower flat member 16c. The upper flat member 16a protrudes from the upper end of the opening / closing member 15 while being inclined upward. The central flat member 16b protrudes directly from the upper end of the opening / closing member 15. The lower flat member 16 c protrudes from the upper end of the opening / closing member 15 while being inclined downward. In this case, the pair of flat members 16 includes a pair of upper flat members 16a, a pair of central flat members 16b, and a pair of lower flat members 16c.

5, the lateral widths of the connecting portion 14, the opening / closing member 15, and the flat member 16 are formed to have a size corresponding to the horizontal distance between the return wheel 8 and the sheave cover 9, for example.

The irradiation part 17 is provided in the connection part 14, for example. The irradiation unit 17 emits visible light at least upward. For example, the irradiation unit 17 irradiates visible light along the axis of the rod unit 12 so as to illuminate a direction in which the pair of flat members 16 are present. As the irradiation unit 17, for example, a light bulb or an LED light is used. The irradiation unit 17 receives power supply from a battery (not shown) provided in the rod unit 12 or the coupling unit 14, for example. For example, the irradiation unit 17 starts or stops irradiation according to an operation on a switch (not shown).

The grease receiving portion 18 is provided between the pair of opening / closing members 15 and the operation portion 13 in the longitudinal direction of the rod portion 12, for example. The grease receiving portion 18 is formed in, for example, an umbrella shape or a bag shape that spreads around the axis of the rod portion 12.

The maintenance staff of the elevator 1 cleans the grease adhering to the exposed part of the sheave shaft 10 using the sheave shaft grease cleaning jig 11. Hereinafter, the grease cleaning work using the sheave shaft portion grease cleaning jig 11 will be described with reference to FIGS. 3 and 6 to 9.

FIG. 6 is a first diagram showing how to use the sheave shaft grease cleaning jig in the first embodiment. FIG. 7 is a second view showing how to use the sheave shaft portion grease cleaning jig in the first embodiment. FIG. 8 is a third view showing how to use the sheave shaft portion grease cleaning jig in the first embodiment. FIG. 9 is a fourth view showing how to use the sheave shaft portion grease cleaning jig in the first embodiment.

6 to 9 show a cross section of the sheave shaft 10. 6 to 8 show the grease 19 attached to the sheave shaft 10.

The sheave shaft portion grease cleaning jig 11 is used by gripping the vicinity of the lower end portion of the rod portion 12 with a hand, for example. For example, the sheave shaft portion grease cleaning jig 11 is inserted into the gap between the return wheel 8 and the sheave cover 9 shown in FIG. 3 from below. The maintenance staff moves the sheave shaft portion grease cleaning jig 11 upward while illuminating the upper portion with the irradiation unit 17 and opening the pair of opening and closing members 15. The maintenance staff closes the pair of opening / closing members 15 with the sheave shaft 10 inside the pair of opening / closing members 15. At this time, the positional relationship between the sheave shaft 10 and the sheave shaft portion grease cleaning jig 11 is as shown in FIG.

The maintenance staff pulls the sheave shaft portion grease cleaning jig 11 downward while closing the pair of opening and closing members 15 from the state of FIG. When the sheave shaft portion grease cleaning jig 11 is lowered, the grease 19 adhering to the upper portion of the sheave shaft 10 is removed by being scraped off by the pair of lower flat members 16c. At this time, the positional relationship between the sheave shaft 10 and the sheave shaft portion grease cleaning jig 11 is as shown in FIG.

When the sheave shaft portion grease cleaning jig 11 is further lowered from the state of FIG. 7, the grease 19 attached to the intermediate portion in the vertical direction of the sheave shaft 10 is scraped off by the pair of central flat members 16b. Removed. At this time, the positional relationship between the sheave shaft 10 and the sheave shaft portion grease cleaning jig 11 is as shown in FIG.

When the sheave shaft portion grease cleaning jig 11 further descends from the state of FIG. 8, the grease 19 adhering to the lower portion of the sheave shaft 10 is removed so as to be scraped off by the pair of upper flat members 16a. . When the sheave shaft portion grease cleaning jig 11 is lowered until the sheave shaft 10 is removed from the inside of the pair of opening / closing members 15, the grease 19 is removed from the entire circumference of the sheave shaft 10. At this time, the positional relationship between the sheave shaft 10 and the sheave shaft portion grease cleaning jig 11 is as shown in FIG.

The grease 19 removed from the sheave shaft 10 adheres to the flat member 16 or falls and is received by the grease receiving portion 18.

According to the first embodiment, the sheave shaft grease cleaning jig 11 of the elevator includes the pair of opening / closing members 15 and the pair of flat members 16. The pair of opening / closing members 15 are coupled to the end portions of the rod portion 12, face each other without being in contact with each other, and are separated from or approach each other according to an operation on the operation portion 13. The pair of flat members 16 have elasticity and are provided to protrude inward from the tips of the pair of opening / closing members 15. For this reason, the grease adhering to the sheave shaft 10 can be easily removed. As a result, it is possible to reduce the time required for grease cleaning and to eliminate the remaining grease.

According to the first embodiment, the pair of flat members 16 are formed such that the lateral width viewed from the direction in which the pair of opening and closing members 15 overlap corresponds to the length of the exposed portion of the sheave shaft 10. For this reason, the grease adhering to the exposed portion of the sheave shaft 10 can be removed at a time.

According to Embodiment 1, the pair of flat members 16 includes a pair of upper flat members 16a, a pair of central flat members 16b, and a pair of lower flat members 16c. For this reason, the grease adhering to the entire circumference of the sheave shaft 10 can be removed at a time.

According to the first embodiment, the sheave shaft grease cleaning jig 11 of the elevator includes the irradiation unit 17 provided in the connecting portion 14 between the pair of opening / closing members 15 and the rod portion 12. For this reason, the visibility in grease cleaning work can be improved.

According to the first embodiment, the sheave shaft portion grease cleaning jig 11 of the elevator includes the grease receiving portion 18 provided between the pair of opening / closing members 15 and the operation portion 13 in the longitudinal direction of the rod portion 12. For this reason, it is possible to prevent the dropped grease from adhering to the floor of the hoistway or other elevator equipment.

The opening / closing member 15 in the first embodiment may not be formed in an arc shape, for example. The opening / closing member 15 may be formed in an angular shape as long as the range surrounded by the pair of opening / closing members 15 is larger than the cross section of the sheave shaft 10.

The sheave shaft grease cleaning jig in the first embodiment may be used for sheaves other than the return wheel 8, for example. For example, the sheave shaft portion grease cleaning jig may be used for the car suspension wheel 6. The sheave shaft portion grease cleaning jig may be used, for example, for an elevator sheave of a machine room type.

This invention can be used for a rope type elevator equipped with a sheave in a hoistway.

DESCRIPTION OF SYMBOLS 1 Elevator 2 Hoisting machine 3 Rope 4 Car 5 Balance weight 6 Car suspension car 7 Weight suspension car 8 Return wheel 9 Sheave cover 10 Sheave shaft 11 Sheave shaft part grease cleaning jig 12 Rod part 13 Operation part 14 Connection part 15 Opening and closing Member 16 Flat member 16a Upper flat member 16b Central flat member 16c Lower flat member 17 Irradiation part 18 Grease receiving part 19 Grease

Claims

The rod part,
An operation part provided in the rod part;
A pair of opening and closing members coupled to the end of the rod portion, facing each other without contacting each other, and separating or approaching each other according to an operation on the operation portion;
A pair of flat members having elasticity and provided inwardly projecting from the tips of the pair of opening and closing members;
Elevator sheave shaft grease cleaning jig.
2. The sheave shaft grease of an elevator according to claim 1, wherein the pair of flat members has a width corresponding to a length of an exposed portion of the sheave shaft as viewed from a direction in which the pair of opening and closing members overlap. Cleaning jig.
The pair of flat members is
A pair of upper flat members projecting obliquely upward from the tips of the pair of opening and closing members;
A pair of central flat members protruding laterally from the ends of the pair of opening and closing members;
A pair of lower flat members that protrude downwardly from the ends of the pair of opening and closing members;
An elevator sheave shaft portion grease cleaning jig according to claim 1 or 2, comprising:
An irradiating unit for irradiating light provided at a connecting portion between the pair of opening and closing members and the rod unit;
The elevator sheave shaft portion grease cleaning jig according to any one of claims 1 to 3, further comprising:
A grease receiving portion provided between the pair of opening and closing members and the operation portion in the longitudinal direction of the rod portion;
The elevator sheave shaft portion grease cleaning jig according to any one of claims 1 to 4, further comprising: