Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
  • B66B11/0065—Roping
  • B66B11/008—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
  • B66B11/0035—Arrangement of driving gear, e.g. location or support
  • B66B11/0045—Arrangement of driving gear, e.g. location or support in the hoistway

Definitions

• the present invention relates to a machine room-less elevator that does not have a machine room above a hoistway. More specifically, the overall length of the hoisting rope can be shortened, and the hoisting rope can be easily installed. Furthermore, the present invention relates to a machine roomless elevator that has been improved so that the size of the guide rail can be reduced by reducing the load exerted on the guide rail by the hoisting machine and the deflecting sheave.
• This machine roomless elevator includes a car 1 that is guided by a pair of left and right car-side guide rails 1L and 1R and moves up and down in a hoistway S, and a pair of left and right cars that are disposed behind the car 1. And a counterweight 2 which is guided by weight-side guide rails 2L and 2R and moves up and down in the hoistway S.
• a lifting machine support beam 3 spanned between the left car-side guide rail 1L and the left weight-side guide rail 2L has a lifting machine for rotationally driving the traction sheave 4. 5 is supported.
• the sled sheave support beam 6 has an upper deflected sheave 7a and a lower deflected sheave 7b. Each is supported rotatably.
• one side of the hoisting rope 8 that suspends the car 1 and the counterweight 2 in the shape of a fishing bottle one side is wound from the trough sheave 4 to the lower deflecting sheave 7b and the car lower sheave la, lb.
• the car 1 is suspended and its end is locked to the front hitch 9f.
• the other side of the rope 8 is deflected upward from the trough sheave 4 and the sheave 7a, weight. While being wound around the side sheave 2a and suspending the counterweight 2, its end is locked to the rear hitch 9r.
• Patent Document 1 Japanese Patent Application Laid-Open No. 2003-137487
• the traction sheave 4 is arranged at the bottom of the hoistway S, and the deflecting sheaves 7a and 7b are arranged at the top of the hoistway S. .
• the total length of the hoisting rope 8 reaches four times the lifting / lowering stroke of the car 1, which increases the manufacturing cost of the entire elevator.
• the lifting machine support beam 3 is fixed to the bottom of the guide rails 1L, 2L, and is deflected to the upper ends of the guide rails 1L, 2L, 2R. Support beam 6 is fixed.
• the hoisting rope 8 draws the hoisting machine support beam 3 and the deflecting sheave support beam 6, and a large bending moment and a compressive force in the buckling direction act on the guide rails 1L and 2L.
• the rail size of the guide rails 1L and 1R must be increased, but all the guide rails are symmetrical.
• the guide rails 1L, 1R, 2L, and 2R must be increased in rail size, greatly increasing the manufacturing cost of the entire elevator.
• a first object of the present invention is to solve the above-mentioned problems of the prior art, reduce the overall length of the hoisting rope, and facilitate the installation work of the hoisting rope. It is to provide a less elevator.
• a second object of the present invention is to reduce the size of the guide rail by reducing the bending moment and the compressive force in the buckling direction exerted on the guide rail by the hoisting machine and the deflecting sheave. It is to provide a machine room-less elevator that can be used. Means for solving the problem
• the machine room-less elevator according to the first aspect of the present invention that solves the above problems includes a car that is guided by a car-side guide rail and moves up and down in a hoistway.
• a traction sheave disposed at the top of the hoistway
• a drive device disposed at the top of the hoistway for rotationally driving the traction sheave
• the lower rope disposed below the truss sheave that guides one of the portions extending downward from the truss sheave to the counterweight side of the upper rope that suspends the car and the counterweight.
• the trough sheave, the lower deflector sheave, and the upper deflector sheave are arranged at a position higher than the floor surface of the highest floor among the floors on which the car is to land.
• the traction sheave, the lower deflecting sheave, and the upper deflecting sheave are all arranged at a position higher than the floor surface of the highest floor. .
• the ceiling of the hoistway of the machine roomless elevator is almost the same height as the ceiling of the highest floor.
• the mount and the support frame are attached to the support member so as to sandwich the support member in the vertical direction.
• the force to pull down the frame and the force to lift the support frame do not apply a large bending moment or compressive force in the buckling direction to the car-side guide weight and the weight-side guide rail. Can be minimized.
• the support frame extends in the vertical direction along the car-side guide rail or the weight-side guide rail, and the upper end thereof is the support member. And a horizontal member extending horizontally between the lower ends of the vertical members and supporting the lower deflecting sheave.
• a pair of said vertical member is connected to the said cage side guide rail and the said weight side guide rail in the lower end part and the center part of the up-down direction, respectively.
• the car side guide rail and the weight side guide rail can be reinforced by using a pair of vertical members, the weight of the driving device, the upper lobe force, and the force acting on the gantry and the support frame, respectively. It is possible to reduce the sag and deformation of the car side guide rail and the weight side guide rail.
• the first vibration isolating means is interposed between the gantry and the support member, and the machine room-less elevator according to the fifth aspect is supported.
• Second vibration isolating means is interposed between a pair of vertical members and horizontal members constituting the frame.
• the anti-vibration means can be made of anti-vibration rubber as in the machine roomless elevator of the sixth aspect, or can be made of a vibration-damping steel plate like the machine roomless elevator of the seventh aspect.
• Other anti-vibration means can also be employed.
• a gantry, a support frame, and a support member can be manufactured with a damping steel plate.
• the total length of the hoisting rope can be shortened, the hoisting rope can be easily installed, and further, the load exerted on the guide rail by the hoisting machine and the deflecting sheave is reduced. Therefore, it is possible to provide an improved machine roomless elevator so that the size of the guide rail can be reduced.
• FIG. 1 is a perspective view of a right front force of a machine room-less elevator according to an embodiment of the present invention.
• FIG. 2 is an enlarged perspective view showing the main part of FIG.
• FIG. 3 is a perspective view of the machine roomless elevator shown in FIG.
• FIG. 4 is an enlarged perspective view showing the main part of FIG.
• FIG. 5 is a plan view of the machine roomless elevator shown in FIG.
• FIG. 6 is a perspective view showing a conventional machine roomless elevator.
• Anti-vibration rubber (anti-vibration means) Support frame 51, 52 Longitudinal member
• the direction in which the car door opens and closes is the left-right direction
• the direction in which the passenger leaves the car is the front
• the direction in which the passenger enters the car is the rear
• the lead straight direction is up and down.
• the car 10 of the machine roomless elevator according to the present embodiment shown in FIGS. 1 to 5 moves up and down in the hoistway S provided in the building while being guided by a pair of left and right car side guide rails 11L and 11R. To do.
• the car frame that supports the car 10 is connected to the upper beam 13 that extends horizontally in the left-right direction above the car 10 and to the bottom of the car 10 while being connected to the left and right ends of the upper beam 13 and hanging down. And a pair of left and right vertical beams 14L, 14R.
• the sheave support beam 15 is connected to the upper beam 13 such that the upper surface of the central portion in the longitudinal direction is in close contact with the lower surface of the central portion in the longitudinal direction of the upper beam 13.
• the direction in which the sheave support beam 15 extends is determined so that the rotation axis of the car sheaves 16L and 16R, which will be described later, and the rotation axis of the traction sheave 20 form an angle ⁇ within a predetermined range.
• a pair of left and right upper car sheaves 16L and 16R for suspending the car 10 are rotatably supported at both left and right ends of the sheave support beam 15, respectively.
• the upward force acting on the pair of left and right car upper sheaves 16L and 16R to suspend the car 10 is transmitted from the sheave support beam 15 to the upper beam 13 and the pair of left and right vertical beams 14L and 14R. It is transmitted to the bottom of the car 10.
• the pair of left and right car sheaves 16L, 16R are symmetrically disposed in the front-rear and left-right directions with respect to the center of gravity G of the car 10.
• a pair of left and right car sheaves 16L, 16R are disposed.
• a pair of left and right car side guide rails 11L and 11R are arranged symmetrically in the left and right direction with respect to the center of gravity G of the car 10.
• the car 10 can be stably suspended without being inclined.
• the counterweight 17 in the machine room-less elevator of the present embodiment is the hoistway S in the space between the rear surface 10r of the car 10 and the rear wall Sr of the hoistway S.
• the portion near the right wall SR of the right wall SR it is arranged so as to move up and down while being guided by a pair of left and right weight side guide rails 18L, 18R.
• a pair of left and right weight-side sheaves 17a and 17b are supported on the upper portion of the counterweight 17 so as to be rotatable about a rotation axis extending in the front-rear direction.
• a control panel CP for controlling the operation of the drive device 21 described later is a space between the rear surface 1 Or of the car 10 and the rear wall Sr of the hoistway S, and the left wall SL of the hoistway S. It is arranged close to.
• the control panel CP is connected to and supported by the left weight side guide rail 18L by a plurality of brackets B.
• a traction sheave 20 is disposed on the top of the hoistway S near the right wall SR and at a substantially central position in the front-rear direction of the right wall SR. Yes.
• the rotational axis of the traction sheave 20 extends horizontally toward the rear wall Sr of the right wall SR force while tilting at an angle a with respect to the right wall SR when viewed in the vertical upward direction.
• a drive device 21 for rotationally driving the traction sheave 20 is disposed behind the traction sheave 20 and coaxially with the traction sheave 20.
• This drive unit 21 is mounted on a horizontally extending frame 30 between the upper ends of the pair of left and right weight side guide rails 18L and 18R and the upper end of the right car side guide rail 11R and is firmly mounted. It is fixed to.
• the gantry 30 has three support beams 31, 32, 33 and a connection plate 34.
• the right support beam 31 that extends horizontally in the front-rear direction near the right wall SR of the hoistway S across the upper ends of the right car-side guide rail 11R and the right weight-side guide rail 18R has a cross-sectional shape. It is made from U-shaped steel.
• the rear support beam 32 that extends horizontally in the left-right direction near the rear wall Sr of the hoistway S between the upper ends of the pair of left and right weight-side guide rails 18L and 18R is manufactured from a section steel with a cross-sectionally inverted concave shape. Has been.
• the oblique support beam 33 extending obliquely back and forth and left and right so as to overlap the rotation axis of the trough sheave 20 when viewed from above in the vertical direction is manufactured from a section steel having an inverted concave shape, Both end portions are placed on the support beams 31 and 32 and are firmly fixed.
• connection plate 34 that extends horizontally.
• the gantry 30 has a structure in which the support beams 31, 32, 33 and the connection plate 34 are connected to each other by bolts and nuts and integrated together, and the top part of the hoistway S of each member when the elevator is installed. Easy to transport and assemble.
• each of the support beams 31, 32, and 33 is made of steel having an open bottom or side surface, which makes assembly work using bolts and nuts easier.
• the gantry 30 is fixed near the upper end of the right car-side guide rail 11R, and is fixed near the upper end of the first support member 36 and the right weight-side guide rail 18R.
• the second support member 37 and the third support member 38 fixed in the vicinity of the upper end of the left weight side guide rail 18L are horizontally supported.
• These support members 36, 37, 38 are made of, for example, a combination of thick steel plates or steel shapes. It can be manufactured, or can be manufactured using a damping steel plate.
• a first anti-vibration rubber 41 as an anti-vibration means is provided between the front end of the right support beam 31 and the first support member 36, and the right end of the rear support beam 32 and the connection plate 34 and the second support member
• the second anti-vibration rubber 42 is interposed between the left end of the rear support beam 32 and the third support member 38. The transmission of vibration to each guide rail is cut off.
• FIGS. 2 and 4 a pair of front and rear lower deflectors that are respectively rotatable around a rotation axis extending horizontally in the left-right direction are provided below the right support beam 31 in the vertical direction. Tubes 23 and 23 are provided.
• the support frame 50 that rotatably supports the pair of front and rear lower deflecting sheaves 22 and 23 is connected and fixed to the lower surfaces of the first support member 36 and the second support member 37.
• the support frame 50 is connected to the lower surface of the first support member 36 and extends downward in the vertical direction, and the lower surface of the second support member 37. It has a second vertical member 52 that is connected and extends vertically downward, and a horizontal member 53 that extends horizontally in the front-rear direction between the lower ends of these vertical members 51 and 52.
• These members 51, 52 and 53 are manufactured with high rigidity steel. Further, a fourth anti-vibration rubber 54 is provided between the upper surface of the front end of the horizontal member 53 and the lower surface of the first vertical member 51, and a second vibration isolator 54 is provided between the upper surface of the rear end of the horizontal member 53 and the lower surface of the second vertical member 52. 5 Anti-vibration rubbers 55 are interposed in the vertical direction, respectively, to block transmission of vibration from the horizontal member 53 to the vertical members 51, 52.
• the pair of front and rear lower deflecting sheaves 22 and 23 are rotatably supported above the horizontal member 53 by a bracket 56 fixed to the horizontal member 53.
• an upper deflecting sheave 24 that is rotatable around a rotation axis that extends horizontally in the front-rear direction is formed on the upper surface of the right end of the rear support beam 32 that constitutes the gantry 30. It is firmly fixed by bracket 24a.
• a rear hitch portion 9r for locking one end of 8 is provided.
• a front hitch portion 9f for locking the other end of the upper rope 8 is supported by a bracket 9a in the vicinity of the upper end of the left car guide rail 11L.
• the tractive sheave 20 is wound with, for example, a heel rope 8 comprising 10 ropes having an outer diameter of 5 mm arranged in parallel.
• this rope 8 One end side of this rope 8 is a portion 8a that hangs from the trough sheave 20 through the vicinity of the front end of the right support beam 31 toward the right car upper sheave 16R, and a pair of left and right upper car sheaves 16L, 16R. Between the left car upper sheave 16L and a part 8c whose tip is fixed to the front hitch part 9f.
• the pair of left and right car sheaves 16R and 16L are symmetrically arranged in the front, rear, left and right with respect to the center of gravity G of the car 10.
• a pair of left and right car-side guide rails 11L and 11R are arranged symmetrically with respect to the center of gravity G of the car 10.
• the car 10 can be stably suspended without being inclined, and the car 10 can be lifted and lowered smoothly without vibrating.
• the other end of the upper rope 8 has a portion 8d that hangs down from the traction sheave 20 toward the front lower deflection sheave 22, and a pair of front and lower lower deflection sheaves 22. , 23 extending horizontally between the lower deflection sheave sheave 23 and the upper deflection sheave 24 toward the upper deflection sheave 24 8f, and the right weight side after being wound around the upper deflection sheave 24
• the counterweight 17 is 2: 1 low pin It is suspended by the group.
• the trough sheave 20, the pair of front and rear lower sheave sheaves 22, 23, and the upper deflector sheave 24 are all powered. From the floor of the highest floor among the floors on which the passenger car 10 is landed. It is also arranged at a high position.
• the ceiling of the hoistway S of this machine roomless elevator is almost the same height as the ceiling of the highest floor.
• the trough sheave 20, the lower deflector sheaves 22, 23, and the upper deflector sheave 24 can all be arranged in a vertical range of about 1.5 to 2 meters at the top of the hoistway S. it can.
• the total length of the rope 8 can be reduced to about 2.5 to 3 times the lifting / lowering stroke of the car 10.
• the installation work of the hoisting rope 8 can be performed intensively and easily at the top of the hoistway S.
• vibration generated in the drive device 21 is not transmitted to the right wall SR and the rear wall Sr of the hoistway S via the right car-side guide rail 11R and the pair of left and right weight-side guide rails 18L and 18R. .
• each anti-vibration rubber 41, 42, 43 can be set to a small value.
• the specifications of the anti-vibration rubbers 41, 42, 43 can be set optimally in order to reliably block the vibration generated in the drive device 21.
• the drive device 2 is arranged along with the traction sheave 20 so as to be coaxial. 1 also extends from the right wall SR of the hoistway S to the rear wall Sr. Therefore, most of the weight of the drive unit 21 is supported by the right car-side guide rail 11R and the left weight-side guide rail 18L. can do.
• the vertical spring constant of these anti-vibration rubbers 41 and 43 should be set to a small value. Can do.
• the base 30 can be supported by the three anti-vibration rubbers 41, 42, 43. The load can be reduced.
• the vibration generated in the drive device 21 can be surely blocked so as not to be transmitted to the right wall SR and the rear wall Sr of the hoistway.
• the upper deflecting sheave 24 rotates as the car 10 and the counterweight 17 are raised and lowered, the upper deflecting sheave 4 also vibrates.
• the gantry 30 that firmly supports the upper deflecting sheave 24 while being pressed is supported on the support members 36, 37, and 38 by vibration-proof rubbers 4, 42, and 43.
• the vibration generated in the upper deflecting sheave 24 is transferred to the right wall SR and rear of the hoistway S via the right car-side guide rail 11R and the pair of left and right weight-side guide rails 18L and 18R. It is not transmitted to the wall Sr.
• the vertical distance between the upper deflecting sheave 24 and the lower deflecting sheaves 22, 23 can be increased.
• the vertical positions of the pair of front and rear lower deflecting sheaves 22 and 23 can be freely set by changing the lengths of the front and rear vertical members 51 and 52 constituting the support frame 50.
• the vertical gap between the upper deflecting sheave 24 and the lower deflecting sheaves 22, 23 can be made as large as possible.
• the portions 8d, 8e, 8f, and 8g that extend from the truss sheave 20 through the lower deflector sheaves 22, 23 and the upper deflector sheave 24 to the weight sheaves 17a, 17b are routed. Since it can be made more gradual, the durability of the hoisting rope 8 can be further improved.
• the gantry 30 and the support frame 50 are arranged so as to sandwich the first to third support members 36, 37, and 38 in the vertical direction.
• the force that pulls down the pedestal 30 and the force that pulls up the support frame 50 do not apply a large bending moment or compressive force in the buckling direction to the car-side guide rail 11R and the weight-side guide rails 18L and 18R. 11R, 18L, 18R rail size can be minimized.
• the first vertical member 51 and the second vertical member 52 constituting the support frame 50 are arranged so as to extend in parallel with the car side guide rail 11R and the weight side guide rail 18R, respectively.
• the anti-vibration rubber is used as the anti-vibration means.
• a spring element such as a coil spring
• a damping element such as an oil damper.
• the support frame 50 that supports the lower deflecting sheaves 22, 23 is fixed to the first support member 36 and the second support member 37, and the first vertical member 51 and A fourth anti-vibration rubber 54 and a fifth anti-vibration rubber 55 are interposed between the second vertical member 52 and the horizontal member 53.

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• Engineering & Computer Science (AREA)
• Civil Engineering (AREA)
• Mechanical Engineering (AREA)
• Structural Engineering (AREA)
• Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
• Cage And Drive Apparatuses For Elevators (AREA)

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Citations (4)

• 2005
  • 2005-03-23 JP JP2005084236A patent/JP2006264862A/ja active Pending
• 2006
  • 2006-03-23 CN CNA2006800091432A patent/CN101146733A/zh active Pending
  • 2006-03-23 WO PCT/JP2006/305795 patent/WO2006101154A1/ja active Application Filing

Patent Citations (4)

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