JP4825475B2 - Sheave cover support structure on elevator car - Google Patents

Description

  The present invention relates to a cover for covering a car sheave so that an operator who performs maintenance and inspection work on an elevator car does not come into contact with the car sheave. More specifically, the cover is generated when the car sheave and the hoisting rope come into contact with each other. The present invention relates to a structure that supports a sheave cover on a car so that vibrations and noises transmitted to the cover are not amplified.

  2. Description of the Related Art Conventionally, various so-called machine roomless elevators that do not have a machine room above a hoistway have been developed and proposed in order to efficiently use a space in a building and avoid problems such as the right to sunshine.

For example, in the machine roomless elevator (see Patent Document 1 below) shown in FIG. 7, the car 1 moves up and down in the hoistway while being guided by a pair of left and right car side guide rails 2L and 2R.
A pair of left and right doors 3L and 3R provided on the front surface of the car 1 open and close in the left-right direction.
The car frame that supports the car 1 has an upper beam 4 that extends horizontally in the left-right direction above the car 1, and a pair of left and right vertical beams 5L and 5R connected to the left and right ends of the upper beam 4. is doing.
Further, in the vertical gap between the upper surface of the car 1 and the upper beam 4, there is provided a sheave support beam 6 that extends with an inclination in the horizontal plane with respect to the upper beam 4. Is connected to the upper beam 4 so as to be in close contact with the lower surface of the central portion in the longitudinal direction of the upper beam 4.
The pair of left and right car sheaves 8L and 8R are rotatably supported by brackets 7L and 7R fixed to the upper surfaces of both ends of the sheave support beam 6, respectively.

The traction sheave 9 disposed in the vicinity of the upper end portion of the left car guide rail 2L is rotationally driven by a driving device 10 having a rotation shaft extending in the front-rear direction.
Of the hoisting rope 11 wound around the traction sheave 9, a portion 11a extending toward the car 1 side is a portion extending downward from the traction sheave 9 toward the left car upper sheave 8L. Between the right car upper sheave 8R and a part fixed to the right hitch part 12R. The car 1 is suspended by 2: 1 roping.
A portion 11b of the hoisting rope 11 that extends downward along the left side surface of the car 1 extends upward after being wound around a weight-side sheave rotatably supported on an upper portion of a counterweight (not shown). It is fixed to the left hitch portion 12L, and the counterweight is suspended by 2: 1 roping.

JP 2004-1904 A

By the way, in the above-described conventional machine room-less elevator, the car 1 may be moved up and down for inspection in a state where an operator who performs maintenance and inspection work is on the upper part of the car 1.
In this case, it is preferable that the car sheaves 8L and 8R are covered with a cover so that workers on the car 1 do not come into contact with the car sheaves 8L and 8R.
In addition, there are countries that require the installation of such a car sheave cover by law.

  However, if a cover covering the sheaves 8L, 8R on the car is attached to the sheave support beam 6 or the upper beam 4, vibrations and noise generated by the contact between the car sheaves 8L, 8R and the hoisting rope 11 are transmitted to the cover and amplified. As a result, the quietness and comfort in the car 1 are reduced.

  Therefore, the object of the present invention is to solve the above-mentioned problems of the prior art and to mount a car sheave cover on the car so that the vibration and noise generated by the contact between the car sheave and the hoisting rope are not transmitted and amplified. It is in providing the structure which supports.

The means described in claim 1 for solving the above problem is
A structure for supporting the top of the cage cover for covering the on-car sheaves of the elevator from above,
The cover is supported by a separating structure disposed separately from a supporting means supporting the sheave on the car among the structures provided on the upper portion of the car ,
The separation structure is a handrail for an operator who performs maintenance inspection work on the upper part of the car.
An elevator car sheave cover support structure characterized in that the cover is closely attached to a lower surface of a bracket fixed to the handrail and is supported in a suspended state .

The means described in claim 2 for solving the above problem is as follows.
A structure that supports a cover that covers the sheave on the elevator car from above, on the top of the car,
The cover is supported by a separating structure disposed separately from a supporting means supporting the sheave on the car among the structures provided on the upper portion of the car,
The separation structure is a scaffold for workers who perform maintenance inspection work on the upper part of the car.
The elevator car sheave cover support structure is characterized in that the cover is closely attached to a lower surface of a bracket fixed to the scaffold and the cover is supported in a suspended state.

The means described in claim 3 for solving the above problem is
A structure that supports a cover that covers the sheave on the elevator car from above, on the top of the car,
The cover is supported by a separating structure disposed separately from a supporting means supporting the sheave on the car among the structures provided on the upper portion of the car,
The separation structure is an equipment structure for supporting equipment on an upper part of the car,
  The elevator car sheave cover support structure is characterized in that the cover is closely attached to a lower surface of a bracket fixed to the device structure and the cover is supported in a suspended state.

That is, the elevator car sheave cover support structure according to claims 1 to 3 does not directly attach the cover to the support means (the sheave support beam and the upper beam) that support the car sheave. Since the cover is supported by a separation structure that is separated from the car, vibrations and noise generated by the contact between the car sheave and the hoisting rope are not transmitted to the cover via the support means. .
As a result, vibration and noise are transmitted to the cover and amplified, and the quietness and comfort in the car are not reduced.
Further, by interposing an elastic vibration-proof member made of a polymer material between the car sheave cover and the separation structure, it is possible to prevent the vibration propagated in the air from being transmitted to the separation structure.
In addition, the car sheave cover itself is molded from vibration-damping steel plates, or vibrations of the car sheave cover are suppressed by attaching a vibration damping material made of a viscoelastic material such as a polymer material to the surface of the car sheave cover. You can also

  According to the present invention, the car sheave cover can be supported by the car so that the vibration and noise generated by the contact between the car sheave and the hoisting rope are not transmitted to the cover and amplified. It is possible to prevent the quietness and comfort in the car from being lowered while reliably covering the car sheave so that the worker does not come into contact with the car sheave.

Hereinafter, each embodiment of the elevator car sheave cover support structure according to the present invention will be described with reference to FIGS.
In the following description, the same parts as those in the prior art described above are denoted by the same reference numerals and redundant description is omitted, and the direction in which the door of the car opens and closes is defined as the left-right direction, and the passenger is in the car. The direction to enter and exit is referred to as the front-rear direction and the vertical direction is referred to as the up-down direction.

First Embodiment First, referring to FIG. 1, a first embodiment of an elevator car sheave cover support structure according to the present invention will be described. The elevator 100 shown in FIG. A pair of left and right car sheave covers 20L and 20R that respectively cover the car sheaves 8L and 8R and a pair of left and right work handrails 30L and 30R are added to the elevator. This is the same as shown in FIG.
Therefore, differences from the conventional elevator shown in FIG. 7 will be described.

  The pair of left and right car upper sheave covers 20L, 20R have symmetrical shapes in the front, rear, left and right, and are formed by bending a thick steel plate into a U-shaped cross section (FIG. 3). The car sheaves 8L, 8R are defined so as to cover the sheaves 8L, 8R on the car from above, from the front and from the rear without contacting the sheave support beam 6 and the hoisting rope 11.

The pair of left and right work handrails (separation structures) 30L and 30R are symmetrically shaped left and right and are assembled by welding shape steel, but the pair of left and right guide rails 2L and 2R and the hoisting rope 11 The upper beam 4 and sheave support beam 6 of the car 1 are separated from each other without being in contact with each other.
More specifically, these handrails 30L and 30R for work are respectively connected to the upper ends of the pair of front and rear vertical beams 5f and 5r and the pair of left and right vertical beams 5L and 5R constituting the car frame of the car 1. A lower member 31 that is connected and extends in the front-rear direction below the sheave support beam 6, a pair of front and rear vertical members 32 and 33 that are connected to the front and rear ends of the lower member 31 and extend upward, An intermediate member 34 connected to an intermediate portion in the vertical direction of the members 32 and 33 and extending in the front-rear direction; and an upper member 35 connected to the upper ends of the vertical members 32 and 33 and extending in the front-rear direction. The whole is firmly fixed to the car 1.

A bracket 36 is fixed to the lower surface of the intermediate member 34, and the pair of left and right upper car sheave covers 20L and 20R are supported in a suspended state.
As shown in FIG. 3, the bracket 36 is formed by integrally assembling a pair of front and rear structural steels 36a, 36b and a thick steel plate 36c, and the top of the sheave covers 20L, 20R on the car is formed on the lower surface thereof. The plate 20a is fixed using bolts and nuts with the plate 20a in close contact.
The front and rear side plates 20b and 20c of the car sheave covers 20L and 20R are separated from the upper beam 4 and the sheave support beam 6 of the car 1 without being in contact with each other.
In FIG. 3, a member indicated by reference numeral 37 is a fixing member for fixing the intermediate member 34 of the handrail for work to the upper beam 4, and what is indicated by reference numeral 38 indicates the deflection of the hoisting rope 11. It is a member to prevent.

That is, the elevator car sheave cover support structure according to the first embodiment supports the sheave support beam 6 that rotatably supports the pair of left and right car sheaves 8L and 8R, and the sheave support beam 6. The upper sheave covers 20L and 20R are not directly attached to the support means such as the upper beam 4, but are attached to the work handrails 30L and 30R arranged separately from the sheave support beam 6 via the bracket 36. Structure.
As a result, vibrations and noises generated by the contact between the car sheaves 8L and 8R and the hoisting rope 11 are not directly transmitted to the car sheave covers 20L and 20R via the sheave support beam 6.
Therefore, vibrations and noises generated in the car sheaves 8L and 8R are transmitted to the car sheave covers 20L and 20R and are amplified, so that the quietness and comfort in the car 1 are not deteriorated.
Further, the car upper sheave covers 20L and 20R cover the pair of left and right car upper sheaves 8L and 8R together with the upper beam 4 and the sheave support beam 6 from above, front, and rear, respectively. It is possible to reliably prevent the worker who performs the work from coming into contact with the car sheaves 8L and 8R.

Modified Example Next, a modified example of the support structure for the car sheave cover according to the first embodiment will be described with reference to FIG. 4. In the support structure of this modified example, the car sheave covers 20L and 20R and the bracket 36 are arranged. An anti-vibration rubber plate (elastic anti-vibration means) 39 is interposed therebetween.
Thereby, the vibration propagated in the air to the car sheave covers 20L, 20R is transmitted to the work handrails 30L, 30R, or the vibration is transmitted from the work handrails 30L, 30R to the car sheave covers 20L, 20R. Thus, it is possible to more reliably prevent the quietness and comfort in the car 1 from being lowered.

Second Embodiment Next, an elevator 200 according to a second embodiment will be described with reference to FIG. 5. The structure of a pair of left and right handrails (separation structures) 40L and 40R is changed.

More specifically, these handrails 40L and 40R for work are assembled by welding shaped steel, but are arranged closer to the center of the car 1 than the hoisting rope 11, and the sheave support beam 6, a lower member 41 extending in the front-rear direction, a pair of front and rear vertical members 42, 43 connected to the front end and the rear end of the lower member 41, and the upper and lower portions of these vertical members 42, 43. An intermediate member 44 connected to an intermediate portion in the direction and extending in the front-rear direction, and an upper member 45 extending between the upper ends of the vertical members 42 and 43 and extending in the front-rear direction. It is fixed to.
And the bracket 46 is being fixed to the lower surface of the intermediate member 44, and it has the structure which supports in the state which each suspended a pair of left-right paired cage upper sheave covers 20L and 20R.

  That is, the handrails 40L and 40R that support the pair of left and right car upper sheave covers 20L and 20R are not necessarily fixed to the car frame of the car 1, and are separated from the sheave support beam 6 and the upper beam 4. Thus, the vibrations and noises generated by the contact between the car sheaves 8L and 8R and the hoisting rope 11 need not be directly transmitted to the car sheave covers 20L and 20R via the sheave support beam 6.

Third Embodiment Next, an elevator 300 according to a third embodiment will be described with reference to FIG. 6. The car top sheave covers 20 </ b> L and 20 </ b> R are provided for the elevators 100 and 200 according to the first embodiment and the second embodiment described above. The structure of the separation structure 50 for supporting is greatly different.

More specifically, the separation structure 50 is a scaffold for an operator who performs maintenance and inspection work on the car 1, or a door driving device, an air conditioner, and a control device mounted on the upper part of the car 1. A rectangular frame member consisting of a pair of front and rear horizontal members 51 and 52 and a pair of left and right horizontal members 53 and 54. Are supported by supporting legs 55 connected to the vertical beams 5f and 5R constituting the car frame of the car 1, respectively.
And the bracket 56 is being fixed to the lower surface of a pair of left and right horizontal members 53 and 54, and it has the structure which supports in the state which suspended the pair of left and right cage upper sheave covers 20L and 20R, respectively.

  That is, the separation structure 50 that supports the pair of left and right car sheave covers 20L and 20R is also separated from the sheave support beam 6 and the upper beam 4, and is in contact with the car sheaves 8L and 8R and the hoisting rope 11. The accompanying vibration and noise are not directly transmitted to the car sheave covers 20L, 20R via the sheave support beam 6.

Although the embodiment of the elevator car sheave cover support structure according to the present invention has been described in detail above, the present invention is not limited to the above-described embodiment, and various modifications can be made. .
For example, the above-described car sheave covers 20L and 20R are each formed by bending a thick steel plate.
On the other hand, by forming the car sheave covers 20L, 20R from vibration-damping steel plates, or by attaching a vibration damping material made of a viscoelastic material such as a polymer material to the surfaces of the car sheave covers 20L, 20R, Vibration of the car sheave cover can also be suppressed.

The perspective view which shows the elevator to which the sheave cover support structure on a car of 1st Embodiment is applied. The top view which shows the sheave cover on the right side car shown in FIG. The side view seen from the arrow III direction shown in FIG. The side view which shows the sheave cover support structure on the cage | basket | car of a modification. The perspective view which shows the elevator to which the sheave cover support structure on a car of 2nd Embodiment is applied. The perspective view which shows the elevator to which the sheave cover support structure on a car of 3rd Embodiment is applied. The perspective view which shows the conventional machine roomless elevator.

Explanation of symbols

1 Car 2L, 2R Car side guide rail 3L, 3R Door 4 Upper beam 5L, 5R Vertical beam 5f, 5r Vertical beam 6 Sheave support beam 7 Bracket 8L, 8R Sheave on car 9 Traction sheave 10 Drive unit 11 Lifting rope 12L, 12R Hitch part 20L, 20R Sheave cover on car 20a Top plate 20b, 20c Side plate 30L, 30R Handrail for work (separation structure)
31 Lower member 32, 33 Vertical member 34 Intermediate member 35 Upper member 36 Bracket 37 Fixing member 38 Stabilization member 40L, 40R Handrail for work (separation structure)
46 Bracket 50 Separating structure 56 Bracket 100 Elevator 110 to which the car sheave cover support structure of the first embodiment is applied An elevator 200 to which the car sheave cover support structure of the modified example is applied A car top sheave cover support structure of the second embodiment The elevator 300 to which the elevator sheave cover support structure according to the third embodiment is applied

Claims (4)

A structure for supporting the top of the cage cover for covering the on-car sheaves of the elevator from above,
The cover is supported by a separating structure disposed separately from a supporting means supporting the sheave on the car among the structures provided on the upper portion of the car ,
The separation structure is a handrail for an operator who performs maintenance inspection work on the upper part of the car.
An elevator car sheave cover support structure , wherein the cover is closely attached to a lower surface of a bracket fixed to the handrail and the cover is suspended . A structure for supporting the top of the cage cover for covering the on-car sheaves of the elevator from above,
The cover is supported by a separating structure disposed separately from a supporting means supporting the sheave on the car among the structures provided on the upper portion of the car ,
The separation structure is a scaffold for workers who perform maintenance inspection work on the upper part of the car.
An elevator car sheave cover supporting structure for supporting an elevator car, wherein the cover is supported by being in close contact with a lower surface of a bracket fixed to the scaffold . A structure for supporting the top of the cage cover for covering the on-car sheaves of the elevator from above,
The cover is supported by a separating structure disposed separately from a supporting means supporting the sheave on the car among the structures provided on the upper portion of the car ,
The separation structure is an equipment structure for supporting equipment on an upper part of the car,
An elevator car sheave cover support structure for supporting an elevator car , wherein the cover is closely attached to a lower surface of a bracket fixed to the device structure and the cover is suspended . The elevator car sheave cover support structure according to any one of claims 1 to 3 , wherein the cover is attached to the bracket via an elastic vibration-proof member.

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