EP2330066B1

EP2330066B1 - Elevator device

Info

Publication number: EP2330066B1
Application number: EP08877148.0A
Authority: EP
Inventors: Hideki Miyahara; Eiji Ando
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2008-10-01
Filing date: 2008-10-01
Publication date: 2016-12-07
Anticipated expiration: 2028-10-01
Also published as: KR20110034026A; JP5398724B2; EP2330066A4; JPWO2010038289A1; CN102171125A; EP2330066A1; WO2010038289A1; KR101208763B1; CN102171125B

Description

Technical Field

The present invention relates to an elevator device including a car suspended by, for example, a main rope and the like.

Background Art

In a conventional elevator device, a rod-like rope shackle is connected to an end portion of a main rope which suspends a car, and thus the end portion of the main rope is managed. The rope shackle is inserted through an upper frame of the car along an up and down direction. A spring receiving plate is provided on a portion of the rope shackle, which protrudes downward relative to the upper frame. Between the spring receiving plate and the upper frame, a coil spring into which the rope shackle is inserted is arranged. The main rope receives a load of the car through the coil spring, the spring receiving plate, and the rope shackle. In such a way, the car is suspended by the main rope (refer to Patent Document 1).
Patent Document 1: JP 2000-355475 A
US 1,884,981 is directed to a flexible suspension for rope hoisting equipment, in particular for mine cage winding. JP S58-140961 discloses a suspension apparatus for an elevator device.

Disclosure of the Invention

Problems to be solved by the Invention

However, the whole of the load received by one main rope is received by one coil spring, and hence the coil spring is increased in size. Moreover, it is necessary to ensure a space for arranging the coil spring below the upper frame, and hence an overall dimension of the car in a height direction is increased. Hence, a reduction of the overall size of a hoistway cannot be achieved.
The present invention has been made in order to solve the problems as described above. It is an object of the present invention to obtain an elevator device capable of achieving the reduction in the size of the hoistway.

Means for solving the Problems

An elevator device according to the present invention includes the features of claim 1.

Brief Description of the Drawings

FIG. 1 is a perspective view illustrating a car of an elevator device according to Embodiment 1 of the present invention.
FIG. 2 is a longitudinal cross-sectional view illustrating the car in FIG. 1.
FIG. 3 is a perspective view illustrating the upper frame of FIG. 1.
FIG. 4 is a perspective view illustrating the mount, the cleat devices, and the weighing device of FIG. 1.
FIG. 5 is a side cross-sectional view illustrating the mount, the cleat devices, and the weighing device of FIG. 4.
FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. 5.
FIG. 7 is a longitudinal cross-sectional view illustrating an elevator device according to Embodiment 2 of the present invention.
FIG. 8 is a longitudinal cross-sectional view illustrating one of the car-side cleat devices of FIG. 7.
FIG. 9 is a side view illustrating the car-side cleat devices, one of which is illustrated in FIG. 8.
FIG. 10 is an exploded perspective view illustrating the car-side cleat device of FIG. 8.

Best Mode for carrying out the Invention

Description is made below of preferred embodiments of the present invention with reference to the drawings.

Embodiment 1

FIG. 1 is a perspective view illustrating a car of an elevator device according to Embodiment 1 of the present invention. Further, FIG. 2 is a longitudinal cross-sectional view illustrating the car in FIG. 1. In FIG. 1, in a hoistway, a car 1 and a counterweight (not shown) are suspended by a plurality (three in this example) of ropes 2 as suspension means. Each of the ropes 2 is wound around a drive sheave (not shown) of a hoisting machine installed in an upper portion of the hoistway. The car 1 and the counterweight are elevated and lowered in the hoistway by rotation of the drive sheave. When the car 1 and the counterweight are elevated and lowered in the hoistway, the car 1 is guided by a pair of car guide rails (not shown), and the counterweight is guided by a pair of counterweight guide rails (not shown).
A mount 3 is fixed to an upper portion of the car 1. On the mount 3, there are held a plurality (three in this example) of cleat devices 4 to which one end portions of the respective ropes 2 are individually connected. A mount (not shown) is fixed to an upper portion of the counterweight. On the mount of the counterweight, there are held a plurality (three in this example) of cleat devices (not shown) to which the other end portions of the respective ropes 2 are individually connected. Specifically, a 1:1 roping method is used as a suspension method for the car 1 and the counterweight by the ropes 2.
The car 1 includes: a car room 5; and a car frame 6 that supports the car room 5. The car room 5 includes: a car room floor portion 7; a car room body portion 8 provided on the car room floor portion 7; and a car room ceiling portion 9 provided on an upper end portion of the car room body portion 8.
A car entrance 10 is provided on the car room body portion 8. On a lower portion of the car entrance 10, a car sill 11 fixed to the car room floor portion 7 is arranged. The car sill 11 is arranged along a frontage direction of the car entrance 10. Above the car sill 11, a pair of car doors 12 which open and close the car entrance 10 are arranged.
Note that, a car control panel 13 operable in the car room 5 is provided on a portion of the car room body portion 8, which is near the car entrance 10. Further, on the car sill 11, an apron 14 as a protection plate extending downward from the car sill 11 is provided.
When the car room 5 is viewed along an up and down direct ion, the car room ceiling portion 9 is made smaller than the car room body portion 8, and is arranged in an inside of the car room body portion 8. Specifically, a horizontal cross-sectional area of the car room ceiling portion 9 is made smaller than a horizontal cross-sectional area of the car room body portion 8 , and in a vertical projection plane of the hoistway, an entire region of the car room ceiling portion 9 is arranged in a region of the car room body portion 8. Hence, on a boundary between the car room body portion 8 and the car room ceiling portion 9, a step portion 15 that surrounds the car room ceiling portion 9 is formed.
The car frame 6 includes: a lower frame 16 on which the car room 5 is placed; an upper frame 17 that surrounds an outer circumference of the car room ceiling portion 9; and a pair of longitudinal frames 18 which connect the lower frame 16 and the upper frame 17 to each other. On upper and lower end portions of the car frame 6, guide shoes 19 to be guided along the car guide rails are provided. Further, on the lower frame 16, there is installed an emergency stop device 20 which grips the car guide rails and prevents the car 1 from falling.
Here, FIG. 3 is a perspective view illustrating the upper frame 17 of FIG. 1. The upper frame 17 includes: a rectangular outer frame 21 that surrounds the car room ceiling portion 9 in the horizontal direction; and an inner frame 22 that is fixed to an inside of the outer frame 21, and is arranged above the car room ceiling portion 9. The outer frame 21 and the inner frame 22 are formed of hollow square pipes.
A position of an upper surface of the outer frame 21 is set at a position higher than an upper surface of the car room ceiling portion 9, and a position of a lower surface of the outer frame 21 is set at a position lower than the upper surface of the car room ceiling portion 9 (FIG. 2). Further, when the upper frame 17 is viewed along the up and down direction, an inner circumferential surface of the outer frame 21 is located inward of an outer circumference of the car room body portion 8.
The outer frame 21 includes: an outer frame front beam portion 23 and an outer frame rear beam portion 24, which are opposed to each other in a depth direction of the car 1; and a pair of outer frame side beam portions 25 which connect both end portions of the outer frame front beam portion 23 and both end portions of the outer frame rear beam portion 24 to each other. The outer frame side beam portions 25 are individually fixed to upper end portions of the respective longitudinal frames 18.
As illustrated in FIG. 1, the outer frame front beam portion 23 is arranged above the car entrance 10. Further, a door rail (not shown) that extends along the frontage direction of the car entrance 10 is fixed to the outer frame front beam portion 23. The respective car doors 12 are hung on the door rail. Further, the respective car doors 12 are moved along the door rail by drive force of a door drive device installed on the car 1. The car entrance 10 is opened and closed in such a manner that the respective car doors 12 are moved along the door rail. Specifically, the outer frame front beam portion 23 as a part of the upper frame 17 also serves as a door case that supports the respective car doors 12.
The inner frame 22 is fixed to the outer frame front beam portion 23 and the outer frame rear beam portion 24. Further, the inner frame 22 includes: a pair of inner frame longitudinal beam portions 26 arranged parallel to the respective outer frame side beam portions 25; and a pair of inner frame transverse beam portions 27 fixed between the respective inner frame longitudinal beam portions 26 and arranged at an interval in the depth direction of the car 1. When the car 1 is viewed along the up and down direction, a range surrounded by the respective inner frame longitudinal beam portions 26 and the respective inner frame transverse beam portions 27 is located on a substantial center of the car room ceiling portion 9.
As illustrated in FIG. 1, the mount 3 is fixed to the inner frame 22. Further, the mount 3 is arranged within the range surrounded by the respective inner frame longitudinal beam portions 26 and the respective inner frame transverse beam portions 27. A weighing device 28 that detects a load of the car 1 is mounted to the inner frame 22.
FIG. 4 is a perspective view illustrating the mount 3, the cleat devices 4, and the weighing device 28 of FIG. 1. Further, FIG. 5 is a side cross-sectional view illustrating the mount 3, the cleat devices 4, and the weighing device 28 of FIG. 4. Further, FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. 5. In FIG. 4 to FIG. 6, the mount 3 includes: a support plate 29 fixed horizontally to the inner frame 22; and a pair of receiving fittings (receiving portions) 30 arranged at an interval in the horizontal direction.
As illustrated in FIG. 5, the support plate 29 is fixed to the respective inner frame transverse beam portions 27 by bolts 31 under a state in which edge portions thereof are abutted against lower surfaces of the respective inner frame transverse beam portions 27.
The respective receiving fittings 30 are arranged at an interval in a direction along the inner frame transverse beam portions 27. Further, each of the receiving fittings 30 includes: a pair of leg portions 30a opposed to each other in the depth direction of the car 1; and a horizontal portion 30b fixed between the respective leg portions 30a and arranged above the support plate 29. In each of the horizontal portions 30b, through holes 32 are provided in the same number (three in this example) as the ropes 2. The receiving fittings 30 are fabricated by bending belt-like metal plates.
Each of the cleat devices 4 includes: a scale fitting (hanger member) 33, which includes a pair of opposed portions 33a individually inserted below the respective horizontal portions 30b, and is capable of being displaced in the up and down direction with respect to the mount 3; a pair of shackle springs (urging bodies) 34 individually arranged between each of the opposed portions 33a and the horizontal portion 30b; a shackle 35 arranged between the respective receiving fittings 30 and connected to the scale fitting 33; and guide bolts (guide shafts) 36 fixed to the respective opposed portions 33a and inserted through the shackle springs 34 and the through holes 32.
On a portion of the scale fitting 33, which is located between the respective opposed portions 33a, a protruding portion 33b for connecting the scale fitting 33 to the shackle 35 is provided. A lower end portion of the shackle 35 is connected to the protruding portion 33b by a pin 37. The scale fitting 33 is pivotable about the pin 37 in the up and down direction with respect to the shackle 35. An upper end portion of the shackle 35 is connected to the end portion of the rope 2 through crimping.
The pair of shackle springs 34 are compressed between the opposed portions 33a and the horizontal portions 30b by the load of the car 1, which is received from the horizontal portion 30b. In such a way, the respective shackle springs 34 generate elastic repulsion force. Specifically, the shackle springs 34 urge the opposed portions 33a and the horizontal portions 30b in such a direction as to resist displacement of the horizontal portions 30b and the opposed portions 33a in a mutually approaching direction thereof.
The rope 2 receives the load of the car 1 through the respective shackle springs 34, the scale fitting 33, and the shackle 35. Specifically, the rope 2 receives a total load of loads individually received by the pair of shackle springs 34.
The opposed portions 33a are displaced in the up and down direction with respect to the horizontal portions 30b by pivot of the scale fitting 33 with respect to the shackle 35 or by displacement of the scale fitting 33 with respect to the mount 3. The displacement of the opposed portions 33a in the up and down direction with respect to the horizontal portions 30b is guided by the guide bolts 36 being slid through the through holes 32. Displacement amount of the opposed portions 33a with respect to the horizontal portions 30b depend on the loads received by the shackle springs 34.
The weighing device 28 is fixed to the inner frame transverse beam portion 27 via a weighing device mounting fitting 38. Further, the weighing device 28 includes: a link mechanism body 39 that operates in response to the displacement of the respective scale fittings 33 with respect to the mount 3; and a displacement detection device 40 that generates a signal in response to the operation of the link mechanism body 39.
For each of the scale fittings 33, the link mechanism body 39 operates in response to the displacement of only one of the pair of opposed portions 33a. Specifically, only one of the pair of opposed portions 33a of the scale fitting 33 is configured to interlock with the link mechanism body 39. Further, the link mechanism body 39 includes: first and second adjusting link members 41 and 42 individually displaced in response to displacement of the respective scale fittings 33 with respect to the horizontal portions 30b and relative displacement among the respective scale fittings 33; and a transmitting link member 43 pivoted with respect to the mount 3 in response to the displacement of the first and second adjusting link members 41 and 42. The first and second adjusting link members 41 and 42 and the transmitting link member 43 are each formed into a plate-like member.
The first adjusting link member 41 is abutted from above against upper end portions of two guide bolts 36, which are individually arranged on one end side and a center, among the three guide bolts 36 individually provided on the one-side opposed portions 33a of the respective scale fittings 33.
The second adjusting link member 42 is abutted from above against an upper end portion of one remaining guide bolt 36, which is arranged on the other end side, among the three guide bolts 36, and in addition, is pivotably connected to the first adjusting link member 41 by a pin 44. As illustrated in FIG. 5, the pin 44 is arranged at a position separated by an equal distance from each of two abutment points between the first adjusting link member 41 and the two guide bolts 36. Hence, a displacement amount of the pin 44 with respect to the mount 3 is an average value of displacement amounts of the two guide bolts 36 on the one end side and the center with respect to the mount 3.
The transmitting link member 43 is pivotably mounted by a pin 46 to a support fitting 45 fixed to the weighing device mounting fitting 38. The pin 46 is provided at an intermediate portion of the transmitting link member 43. One end portion of the transmitting link member 43 is pivotably connected to the second adjusting link member 42 by a pin 47. A pressing plate 48 that presses the displacement detection device 40 is fixed to the other end portion of the transmitting link member 43.
A pivot amount of the transmitting link member 43 is set at an amount corresponding to an average value of displacement amounts of the one-side opposed portions 33a of the respective scale fittings 33. Hence, the pin 47 is arranged at a position where a distance from the pin 44 is shorter than a distance from a point at which the second adjusting link member 42 is abutted against the guide bolt 36. Specifically, the displacement amount of the pin 44 is determined by the amount obtained by averaging the displacement amounts of the two guide bolts 36, and accordingly, in order to increase an influence of the displacement amount of the pin 44 on the pivot amount of the transmitting link member 43, the pin 47 is arranged at the position closer to the pin 44 than to the point at which the second adjusting link member 42 is abutted against the guide bolt 36 in terms of the distance. In such a way, the average value of the displacement amounts of the three opposed portions 33a with respect to the horizontal portion 30b is accurately reflected on the pivot amount of the transmitting link member 43.
The displacement detection device 40 is arranged below the pressing plate 48. Further, the displacement detection device 40 includes: a differential transformer 49 mounted to the weighing device mounting fitting 38; a detection bar 50, which is capable of being displaced in the up and down direction with respect to the differential transformer 49, and is pressed downward by the pressing plate 48; and a return spring 51 that urges the detection bar 50 in such a direction as to resist downward displacement of the detection bar 50.
An upper end portion of the detection bar 50 is pressed against the pressing plate 48, which is located above the detection bar 50, by urging force of the return spring 51. Hence, the detection bar 50 is displaced in the up and down direction with respect to the differential transformer 49 in response to the pivot of the transmitting link member 43. A spring receiving plate 52 is fixed to the detection bar 50.
As the return spring 51, a coil spring into which the detection bar 50 is inserted is used. Further, the return spring 51 is compressed between the differential transformer 49 and the spring receiving plate 52. In such a way, the return spring 51 generates urging force ta press the detection bar 50 against the pressing plate 48.
The differential transformer 49 is held on the weighing device mounting fitting 38 by amounting band 53 and bolts 54. Further, the differential transformer 49 generates a signal in response to the displacement of the detection bar 50.
The signal from the differential transformer 49 is sent to a control device (not shown) that controls the operation of the elevator. The control device receives the signal from the differential transformer 49 as a signal corresponding to an average value of loads received by the respective ropes 2, and controls the operation of the elevator based on the received signal from the differential transformer 49.
In the elevator device as described above, the respective opposed portions 33a of the scale fittings 33 which receive the load of the car 1 are individually inserted below the respective receiving fittings 30, and each pair of the shackle springs 34 are arranged between the opposed portions 33a and the receiving fittings 30. Accordingly, the respective shackle springs 34 can share and receive the load received by each rope 2. Hence, the load received by each of the shackle springs 34 can be reduced, and miniaturization of each of the shackle springs 34 can be achieved. Further, the shackle 35 and the respective shackle springs 34 can be arrayed in the horizontal direction by each of the scale fittings 33. Accordingly, dimensional reduction of each of the cleat devices 4 in the height direction can be achieved, and dimensional reduction of the car 1 in the height direction can be achieved. Hence, reduction in the size of the hoistway can be achieved.
Further, the upper frame 17 surrounds the outer circumference of the car room ceiling portion 9, and hence a position of a lower surface of the upper frame 17 can be placed lower than a position of the upper surface of the car room ceiling portion 9. Hence, the dimensional reduction of the car 1 in the height direction can be further achieved.
Further, when the car room 5 is viewed along the up and down direction, the car room ceiling portion 9 is made smaller than the car room body portion 8, and is arranged in the inside of the car room body portion 8. Accordingly, a dimension of the upper frame 17 in the horizontal direction can be reduced. In such a way, reduction of the dimension of the car 1 in the horizontal direction can be achieved.
Further, on the car room body portion 8, the car entrance 10 opened and closed by the car doors 12 is provided, and a part of the upper frame 17 is formed into the door case that supports the car doors 12. Accordingly, the upper frame 17 can also serve as the door case, and the number of components can be reduced. In such a way, overall weight reduction of the car 1 can be achieved.
Further, the weighing device 28 includes: the link mechanism body 39 that operates in response to the displacement of the scale fittings 33 with respect to the mount 3; and the displacement detection device 40 that generates the signal in response to the operation of the link mechanism body 39, and accordingly, can arrange the displacement detection device 40 at a position apart from the scale fittings 33 by the transmission of the displacement of the link mechanism body 39. Hence, the displacement detection device 40 can be arranged apart from the cleat devices 4 in the horizontal direction, and an installation space for the displacement detection device 40 can be easily ensured without increasing the dimension of the car 1 in the height direction.
Further, the link mechanism body 39 includes: the first and second adjusting link members 41 and 42 individually displaced in response to the displacement of the respective scale fittings 33 with respect to the receiving fitting 30 and the relative displacement among the respective scale fittings 33; and the transmitting link member 43 pivoted with respect to the mount 3 in response to the displacement of the first and second adjusting link members 41 and 42. Accordingly, through appropriately setting connection positions of the transmitting link member 43 to the first and second adjusting link members 41 and 42, the pivot amount of the transmitting linkmember 43 can be set at the amount corresponding to the average value of the displacement amounts of the respective scale fittings 33. In such a way, the average value of the displacement amounts of the respective scale fittings 33 with respect to the mount 3 can be easily detected.
Further, the first and second adjusting link members 41 and 42 and the transmitting link member 43 are each formed into the plate-like member, and accordingly, the connection among the respective link members 41, 42, and 43 by the pins can be easily made.

Embodiment 2

FIG. 7 is a longitudinal cross-sectional view illustrating an elevator device according to Embodiment 2 of the present invention. In FIG. 7, in a hoistway, there are installed a pair of car guide rails 61 and a pair of counterweight guide rails (not shown). A car 1 is arranged between the respective car guide rails 61, and a counterweight 62 is arranged between the respective counterweight guide rails. The car 1 and the counterweight 62 are elevated and lowered in the hoistway by drive force of a hoisting machine 63 provided in an upper portion of the hoistway. When the car 1 and the counterweight 62 are elevated and lowered, the car 1 is guided by the respective car guide rails 61, and the counterweight 62 is guided by the respective counterweight guide rails.
The car 1 and the counterweight 62 are suspended by a plurality (three in this example) of ropes (suspension means) 2. A plurality of support beams 64 are fixed to an upper portion in the hoistway. On the support beams 64, there are supported: a plurality (three in this example) of car-side cleat devices 65 to which one end portions of the respective ropes 2 are individually connected; and a plurality (three in this example) of counterweight-side cleat devices 66 to which the other end portions of the respective ropes 2 are individually connected.
On a lower portion of the car 1, a pair of car suspension sheaves 67 are provided. On an upper portion of the counterweight 62, a weight suspension sheave 68 is provided.
The ropes 2 are sequentially wound around the car-side cleat devices 65, the respective car suspension sheaves 67, a drive sheave of the hoisting machine 63, and the weight suspension sheave 68, and reach the counterweight-side cleat device 66. Specifically, a 2:1 roping method is used as a suspension method for the car 1 and the counterweight 62 by the ropes 2. The car 1 and the counterweight 62 are elevated and lowered in the hoistway by rotation of the drive sheave of the hoisting machine 63.
FIG. 8 is a longitudinal cross-sectional view illustrating one of the car-side cleat devices 65 of FIG. 7. Further, FIG. 9 is a side view illustrating the car-side cleat devices 65, one of which is illustrated in FIG. 8. Further, FIG. 10 is an exploded perspective view illustrating the car-side cleat device 65 of FIG. 8. In FIG. 8 to FIG. 10, a plate-like mounting base 69 that is vertically arranged is fixed to a side surface of one of the support beams 64. To the mounting base 69, an upper end portion of one of the car guide rails 61 is mounted by a plurality of rail clips 70.
A mount 71 is horizontally fixed to an upper surface of the support beam 64. The mount 71 is placed on a plurality of reinforcement members 72 fixed to the mounting base 69. Further, the mount 71 is formed into a plate-like member in which an opening portion 73 is provided in a center. In such a way, in the mount 71, a pair of receiving portions 74 are formed across the opening portion 73 therebetween in the horizontal direction. Specifically, the mount 71 includes the pair of receiving portions 74 arranged at an interval in the horizontal direction.
Plate-like spacers 75 are individually superposed on the respective receiving portions 74. On the respective spacers 75, cover members 76 are arranged. The mount 71, one of the spacers 75, and one of the cover members 76 are collectively fixed to the upper surface of the support beam 64 by a plurality of bolts 77. The other spacer 75 and the other cover member 76 are collectively fixed to the mount 71 by a plurality of bolts 78.
In each of the support beam 64, the receiving portion 74, and the spacer 75, through holes 32 are provided in the same number (three in this example) as the ropes 2. Positions of the through holes 32 provided in the support beam 64, the receiving portion 74, and the spacer 75 are individually set at the same positions in the horizontal direction.
The respective cleat devices 65 are held on the mount 71. Further, each of the cleat devices 65 includes: a scale fitting (hanger member) 33, which includes a pair of opposed portions 33a individually inserted above the respective receiving portions 74, and is capable of being displaced in the up and down direction with respect to the mount 71; a pair of shackle springs (urging bodies) 34 individually arranged between each of the opposed portions 33a and the receiving portion 74; a shackle 35 arranged between the respective receiving portions 74 and connected to the scale fitting 33; and guide bolts (guide shafts) 36 fixed to the respective opposed portions 33a and inserted through the shackle springs 34 and the through holes 32. Specifically, a configuration of each of the cleat devices 65 is a configuration in which the cleat device 4 in Embodiment 1 is arranged upside down.
On a portion of the scale fitting 33, which is located between the respective opposed portions 33a, a protruding portion 33b for connecting the scale fitting 33 to the shackle 35 is provided. An upper end portion of the shackle 35 is connected to the protruding portion 33b by a pin 37. The scale fitting 33 is pivotable about the pin 37 in the up and down direction with respect to the shackle 35. A lower end portion of the shackle 35 is connected to the end portion of the rope 2 through crimping.
The shackle springs 34 are abutted against the opposed portions 33a and the spacers 75. The pair of shackle springs 34 are compressed between the opposed portions 33a and the receiving portions 74 by the load received from the ropes 2. In such a way, the respective shackle springs 34 generate elastic repulsion force. Specifically, the shackle springs 34 urge the receiving portions 74 and the opposed portions 33a in such a direction as to resist displacement of the receiving portions 74 and the opposed portions 33a in a mutually approaching direction thereof.
The mount 71 receives the load from each of the ropes 2 through the shackle 35, the scale fitting 33, the respective shackle springs 34, and the respective spacers 75. Specifically, the pair of shackle springs 34 share and receive the load from each rope 2.
The opposed portions 33a are displaced in the up and down direction with respect to the receiving portions 74 by pivot of the scale fitting 33 with respect to the shackle 35 or by displacement of the scale fitting 33 with respect to the mount 71. The displacement of the opposed portions 33a in the up and down direction with respect to the receiving portions 74 is guided by the guide bolts 36 being slid through the through holes 32. Displacement amounts of the opposed portions 33a with respect to the receiving portions 74 depend on the loads received by the shackle springs 34.
An average value of the loads from the respective ropes 2 is detected by a weighing device 28 mounted to a weighting device mounting fitting (not shown). The weighing device 28 and other configurations are similar to those of Embodiment 1.
In the elevator device as described above, the respective opposed portions 33a of the scale fittings 33 which receive the loads from the ropes 2 are individually inserted above the respective receiving portions 74, and each pair of the shackle springs 34 are arranged between the opposed portions 33a and the receiving portions 74. Accordingly, each pair of the shackle springs 34 can share and receive the load from each rope 2. Hence, the load received by each of the shackle springs 34 can be reduced, and miniaturization of each of the shackle springs 34 can be achieved. Further, the shackle 35 and the respective shackle springs 34 can be arrayed in the horizontal direction by each of the scale fittings 33. Accordingly, dimensional reduction of each of the cleat devices 65 in the height direction can be achieved. Hence, reduction in the size of the hoistway can be achieved.
Note that, though the ropes 2 are used as the suspension means for suspending the car 1 and the counterweight in each of the above-described embodiments, belts may be used as the suspension means.
Moreover, though the number of ropes 2 is three in each of the above-described embodiments, the number of ropes 2 may be one, two, or four or more without being limited to three. In this case, the number of adjusting link members of the link mechanism body 39 varies depending on the number of ropes 2. In the case where the number of ropes 2 is one, the adjusting link member may be eliminated.

Claims

An elevator device, comprising:
a car (1);

a mount (3) fixed to an upper portion of the car (1), the mount (3) including a pair of receiving portions (30) arranged at an interval in a horizontal direction;

a cleat device (4) comprising: a hanger member (33) including a pair of opposed portions (33a) individually inserted below the respective receiving portions (30), the hanger member (33) being capable of being displaced in an up and down direction with respect to the mount (3); a pair of urging bodies (34) individually arranged between the opposed portions (33a) and the receiving portions (30), the urging bodies (34) urging the opposed portions (33a) and the receiving portions (30) in such a direction as to resist displacement of the opposed portions (33a) and the receiving portions (30) in a mutually approaching direction thereof; and a shackle (35) arranged between the receiving portions (30) and connected to the hanger member (33); and

suspension means (2) connected to the shackle (35), for suspending the car (1),
characterised in that
the car (1) includes:
a car room (5) including: a car room floor portion (7); a car room body portion (8) provided on the car room floor portion (7); and a car room ceiling portion (9) provided on an upper end portion of the car room body portion (8); and

a car frame (6) including: a lower frame (16) on which the car room (5) is placed; an upper frame (17) surrounding an outer circumference of the car room ceiling portion (9); and longitudinal frames (18) connecting the lower frame (16) and the upper frame (17) to each other.
An elevator device according to claim 1, wherein, when the car room (5) is viewed along the up and down direction, the car room ceiling portion (9) is made smaller than the car room body portion (8), and is arranged in an inside of the car room body portion (8).
An elevator device according to claim 1,
wherein the car room body portion (8) is provided with a car entrance (10) opened and closed by a car door (12), and
wherein a part of the upper frame (17) serves as a door case supporting the car door (12).
An elevator device according to claim 1, further comprising:
a weighing device (28) comprising: a link mechanism body (39) operating in response to displacement of the hanger member (33) with respect to the mount (3, 71); and a displacement detection device (40) generating a signal in response to the operation of the link mechanism body (39).
An elevator device according to claim 4,
wherein the cleat device (4, 65) comprises a plurality of cleat devices (4, 65), which are provided on the mount (3, 71), and
wherein the link mechanism body (39) includes: adjusting link members (41, 42) individually displaced in response to displacement of the respective hanger members (33) with respect to the receiving portions (30, 74) and relative displacement among the hanger members (33); and a transmitting link member (43) pivoted with respect to the mount (3, 71) in response to the displacement of the adjusting link members (41, 42).
An elevator device according to claim 5, wherein the adjusting link members (41, 42) and the transmitting link member (43) are each formed into a plate-like member.