JPH0537854U - Car suspension structure of linear motor type elevator - Google Patents

Abstract

(57) [Summary] [Structure] The car 1 arranged to be movable up and down in the hoistway of the building, and one end of which is located above the rear side surface of the car 1 and close to the rear side surface 1a. The other end is the linear motor 11
A rope 8 fixed to the overhead beam 9, an overhead beam 9 disposed above the hoistway and behind the horizontal projected area S of the car 1, and the rope 8 provided on the overhead beam 9 and hung on the rope 8. And sheaves 10a and 10b. [Effect] The dead space conventionally existing between the overhead beam and the top wall of the building can be omitted. Therefore, the top wall surface of the building can be lowered by the amount by which the dead space is omitted, and it is possible to meet the request to lower the height of the building while conforming to the building standards. Further, when the car 1 is towed by the rope 8, the rolling force applied to the car 1 does not become so large because one end side of the rope 8 is close to the center of gravity of the car 1. Therefore, the car 1 and the guide rails 3a,
It is possible to reduce the frictional force generated between the car 1 and 3b, and to move the car 1 smoothly up and down.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a car suspension structure for a linear motor type elevator that suspends an elevator car in a hoistway of a building.

[0002]

[Prior Art]

 Conventional linear motor elevators include those shown in FIGS. 3 and 4. In FIG. 3, reference numeral 101 is a car that moves vertically as it is guided by guide rails in the hoistway of a building, and one end of a rope 103 is fastened to the upper surface of a support frame 102 provided in the car 101. ing. One end of the rope 103 is hooked on sheaves 106 and 107 supported by an overhead beam 105 arranged in the horizontal projected area 104 of the car 101 above the hoistway, and the other end is a linear member provided in the hoistway. It is fixed to the mover 108a of the motor 108.

By the way, when performing maintenance / inspection of the elevator, a maintenance person places the work on the ceiling 101 a of the car 101 and the support frame 102 to perform the work. As described above, since a person may be placed on the ceiling portion 101a of the car 101 and the support frame 102, the support frame 102 and the overhead beam 105 disposed above the hoistway 110 as shown in FIG. It is stipulated by law that a predetermined top clearance TC is provided between them.

[0004]

[Problems to be solved by the device]

However, in such a conventional elevator car suspension structure, the rope 103 fixed to the upper surface of the supporting frame 102 is hung on the sheave 106, which is directly above the car 101. Since it is provided on the overhead beam 105 located within the projected area 104, the top clearance TC must be from this overhead beam 105 to the support frame 102 of the car 101 below. Therefore, there is a dead space DS between the overhead beam 105 and the top wall surface 109 of the building. Further, since the rope 103 is fixed to the car support frame 102, a predetermined height H ₁ is required between the car ceiling portion 101a and the support frame 102. Therefore, if the building is as high as dead space DS and overhead beam height and the basket support frame 102 your ceiling portion 101a and the height H the sum of the minute height H ₂ of ₁ of the Toka of 105 from the ceiling portion 1 01a As a result, we were unable to meet the demand to make the height of the building as low as possible while meeting the building standards.

Therefore, as shown in FIG. 5, the overhead beam positioned in the horizontal projected area immediately above the car 101 is omitted, and the overhead beam 111 positioned outside the horizontal projected area and positioned behind the car 101 is used. A method of suspending the basket 101 can be considered. That is, an auxiliary support frame 112 extending to the rear side of the car 102 is attached to a support frame 102 provided on the car 101, and a rope 103 is fixed to a tip end of the auxiliary frame 112. It is attached to the linear motor 108 by being hung on the sheave 113 provided on the frame 111. According to this method, the overhead beam 105 within the horizontal projection area is omitted, so that the top wall surface 109 of the building can be lowered accordingly.

However, since the rope 103 is fixed to the rear side of the floor surface portion 101b of the car 101, the rope 103 may come into contact with the rear side surface 101c of the car 101. When the rope 103 being towed comes into contact with the rear side surface 101c of the car 101, the vibration of the rope 103 is transmitted to the car 101, which gives an uncomfortable feeling to passengers inside. Therefore, the rope 103 needs to be attached to the floor surface portion 101b as far as possible from the rear side surface 101c. However, when the rope 103 is fixed to the floor surface portion 101b in this manner, the rope 103 is separated from the center of gravity of the car 101, and the car 101 towed by the rope 103 receives a large rolling force. For this reason, a large frictional force is generated between the car 101 and the guide rails that guide the car 101 in the vertical direction, and the car 101 may not be able to move vertically smoothly.

The present invention relates to a cage suspension structure for a linear motor type elevator that can omit a dead space, lower a top wall of a building, and smoothly move up and down.

[0008]

[Means for Solving the Problems]

 In order to achieve such an object, according to the present invention, a car that is vertically movable in a hoistway of a building, is located above the rear side surface of the car, and approaches the rear side surface. Is attached to the rope and the other end is attached to a linear motor, an overhead beam is provided above the hoistway and behind the horizontal projected area of the car, and the rope is attached to the overhead beam. It is configured with a sheave on which is hung.

[0009]

[Action]

 An overhead beam is installed above the hoistway.Since this overhead beam is located outside the horizontal projected area of the car, the top clearance that needs to be installed above the ceiling of the car is It can be provided between the top wall surface. For this reason, the dead space, which used to exist between the overhead beam and the top wall of the building, will be omitted.

Further, since one end side of the rope attached to the car is brought close to the rear side surface of the car, as compared with the case where the rope is fastened to the rear side of the floor surface of the car as described above. The center of gravity is close. Therefore, when the car is towed by the rope, the rolling force applied to the car does not become so large because one end of the rope is close to the center of gravity of the car.

[0011]

【Example】

 Hereinafter, the present invention will be described with reference to the drawings. 1 and 2 are views showing an embodiment of an elevator car suspension structure according to the present invention.

In FIG. 1, reference numeral 1 is a car that moves up and down in a hoistway of a building, and the car 1 is provided with a support frame 2 having a substantially rectangular shape as a whole. Guide rails 3a, 3b are erected on both sides of the support frame 2, and the car 1 is guided by the guide rails 3a, 3b via guide rollers 4 provided on the support frames 3a, 3b to move up and down. Further, a pair of auxiliary frames 5a and 5b are provided on the upper side of the support frame 2 so as to extend rearward from the car 1, and a hanging frame 6 is provided at a projecting end of the auxiliary frames 5a and 5b. Reinforcing frames 7a and 7b are provided between both ends of the frame 6 and the support frame 2. Here, as shown in FIG. 2, the suspension frame 6 is on the rear side of the car 1 (that is, outside the horizontal projected area S) and is close to the upper side and the rear side surface 1a of the car 1, and It is positioned parallel to the rear wall surface 1a of the car 1, and one end of a rope 8 is fixed to the substantially center of the suspension frame 6. Since one end side of the rope 8 is located at the rear side of the car 1 and above it, there is no possibility of contacting it even if it comes close to the rear side surface 1a of the car 1. The one end can be brought closer to the center of gravity of the car 1.

An overhead beam 9 is disposed above the suspension frame 6 (that is, outside the horizontal projected area S), and the overhead beam 9 has a configuration in which two C-shaped steels 9a and 9b are arranged side by side. A clearance t is provided between the C-shaped steels 9a and 9b so that the rope 8 can be inserted therethrough. A pair of sheaves 10a and 10b are rotatably provided on the C-shaped steel 9a so as to be positioned in an inverted eight shape with respect to the suspension frame 6. The rope 8 fixed to the substantially central portion of the suspension frame 6 is hung on sheaves 10a and 10b, and fixed to the linear motor 11 through the gap t of the overhead beam 9.

The linear motor 11 is composed of a mover 12 as a primary-side conductor having a through hole and a stator 13 as a column-shaped secondary-side conductor penetrating the through-hole of the movable element 12. The other end of the rope 8 is fixed to the mover 12. The stator 13 extends vertically in the hoistway 2 of the building, and its upper side and lower side are fixed to the building, respectively. The mover 12 is provided with a counter weight 15 for maintaining the balance with the car 1 through the frame 14. The weight of the counter weight 15 including the mover 14 is the weight of the car 1 and the rated load of the elevator. It is set to the total weight including half the weight of the load.

An overhead beam 9 is arranged above the hoistway, but since this overhead beam 9 is located outside the horizontal projected area S of the car 1, as shown in FIG. The top clearance TC that needs to be provided above the ceiling 1b can be provided between the top wall 16 of the building. For this reason, the dead space conventionally existing between the overhead beam and the top wall of the building will be omitted. Therefore, the top wall 16 of the building can be lowered by the amount by which the dead space is omitted.

By the way, since one end side of the rope 8 attached to the car 1 through the suspension frame 6 is brought close to the rear side surface 1a of the car 1, the rear side of the floor surface part of the car as described above. It is closer to the center of gravity of the car 1 than when it is fastened to one. Therefore, when the car 1 is pulled by the rope 8, the rolling force applied to the car 1 does not become so large because one end of the rope 8 is close to the center of gravity of the car 1. Therefore, the frictional force generated between the car 1 and the guide rails 3a and 3b can be reduced, and the car 1 can be smoothly moved up and down.

[0017]

[Effect of the device]

 As described above, according to the present invention, since the overhead beam is arranged above the hoistway of the building and outside the horizontal projected area of the car, the dead beam existing between the overhead beam and the top wall of the building in the related art is Spaces can be omitted. Therefore, the top wall of the building can be lowered by the amount by which the dead space etc. are omitted, and it is possible to meet the request to make the height of the building as low as possible while conforming to the building standards.

Further, when the car is towed by the rope, the rolling force applied to the car does not become so large because one end of the rope is close to the center of gravity of the car. Therefore, the frictional force generated between the car and the guide rail can be reduced, and the car can be smoothly moved up and down.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an elevator car suspension structure according to the present invention.

FIG. 2 is a schematic sectional view of the car suspension structure.

FIG. 3 is a perspective view showing a conventional car lifting structure for an elevator.

FIG. 4 is a schematic sectional view of the car suspension structure.

FIG. 5 is a schematic cross-sectional view of a possible car suspension structure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Basket | car 3a, 3b ... Guide rail, 6 ... Suspension frame, 8 ... Rope, S ... Horizontal projected area, 9 ... Overhead beam, 10a, 10b ... Sheave.

Claims (1)

[Scope of utility model registration request] 1. A car disposed vertically movable in a hoistway of a building, one end of which is fastened to a rear side of the car and close to the rear side of the car, and the other end of which is fastened to a linear motor. A rope, and an overhead beam arranged above the hoistway and behind the horizontal projected area of the car,
A car suspension structure for a linear motor elevator, comprising: a sheave provided on the overhead beam and to which the rope is hung.