CN1232435C - Elevator - Google Patents

Abstract

The elevator device of the present invention includes first and second main cable connection portions on the car, and first and second car-side turning pulleys arranged above the first and second main cable connection portions in the upper part of the elevator shaft. The main cable group includes a first main cable wound on the first car-side turning pulley and connected to the first main cable connection portion, and a second main cable wound on the second car-side turning pulley and connected to the second main cable connection portion. The drive unit, the first and second car-side turning pulleys are arranged above the car, overlapping with the car in the vertical projection plane.

Description

Elevator device

technical field

The present invention relates to an elevator device in which a driving device is arranged in an upper part of a hoistway.

Background technique

In conventional elevators without a machine room, the driving device and the control panel are arranged, for example, between the hoistway wall and the car. In addition, for example, in the elevator without a machine room disclosed in Japanese Patent Application Laid-Open No. 10-139321, a thin driving device is arranged at the upper portion in the hoistway.

However, in the aforementioned conventional elevator without a machine room, since the diameters of the various sheaves on which the main ropes are wound are large, and in order to arrange a plurality of main ropes, the distance between the drive unit and the various sheaves must be adjusted to Larger, so the overlooking area of the lifting passage increases. In addition, in order to suppress the overhead size, the movable pulley must be installed in the lower part of the car and made into a 2:1 rope (Japanese: ロピピング), so the structure is complicated, the cost is increased, and the size of the lower part of the elevator passage is increased. Therefore, it is required to make the hoistway more compact.

Contents of the invention

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to obtain an elevator apparatus that can simplify the structure and make the hoistway compact.

The elevator device of the present invention has: a lifting passage; a driving device, which is arranged in the upper part of the lifting passage, has a driving device body and a driving sheave that rotates around a rotating shaft extending in a vertical direction and is rotated by the driving device body; The main cable group hung on the driving sheave; and the car and the counterweight suspended in the hoisting passage by the main cable group and lifted in the hoisting passage by the driving device, on the car, clamped in the vertical projection plane The first and second main cable connecting parts are provided with a car, and the first and second car side return pulleys are arranged on the upper part of the hoisting passage above the first and second main cable connecting parts. The main cable group has The first main rope wound on the first car side return pulley and connected to the first main cable connection part and the second main rope wound on the second car side return pulley and connected to the second main cable connection part The cable, the driving device, the first and second car side return wheels are arranged above the car so as to overlap with the car in the vertical projection plane.

In addition, the elevator device of the present invention has: a hoistway; a drive device, which is arranged in the upper part of the hoistway, and has a drive device body and a drive sheave that is rotated by the drive device body centering on a rotating shaft extending in a vertical direction. ; the main cable group that is wound on the driving sheave; On the top of the weight, there are first and second counterweight side turn-back wheels, and the main cable group has the first main cable that is wound on the first counterweight side turn-back wheel and connected with the counterweight and the coil is hung on the second counterweight. The second main cable connected to the second main cable connection on the side return wheel, the setting height of the first and second counterweight side return wheels depends on the height of the first and second main cables drawn from the driving sheave. different from each other.

In addition, the elevator device of the present invention has: a hoistway; a drive device, which is arranged in the upper part of the hoistway, and has a drive device body and a drive sheave that is rotated by the drive device body centering on a rotating shaft extending in a vertical direction. ; the main cable group that is wound on the driving sheave; and the car and the counterweight that are suspended in the hoisting passage by the main cable group and lifted in the hoisting passage by the driving device. Above, the first and second counterweight side turn-back pulleys are configured, and the main cable group has the first main cable that is wound on the first counterweight side turn-back wheel and connected with the counterweight and the coil is hung on the second counterweight side The diameters of the first and second counterweight-side return pulleys on the return pulley and the second main cable connected to the second main cable connection part are different from each other according to the heights of the first and second main cables drawn out from the driving sheave .

A brief description of the drawings

Fig. 1 is a front view showing an elevator apparatus according to Embodiment 1 of the present invention.

Fig. 2 is a plan view showing a structure at the upper part of the hoistway in Fig. 1 .

Fig. 3 is a plan view showing a main part of the elevator apparatus of Fig. 1 .

Fig. 4 is a plan view showing main parts of an elevator apparatus according to Embodiment 2 of the present invention.

Fig. 5 is a front view showing first and second weight-side return wheels of Fig. 4 .

Fig. 6 is a plan view showing main parts of an elevator apparatus according to Embodiment 3 of the present invention.

Fig. 7 is a cross-sectional view showing first and second weight-side return wheels of Fig. 6 .

Detailed ways

Hereinafter, best embodiments of the present invention will be described with reference to the drawings.

Embodiment 1

Fig. 1 is a front view showing an elevator apparatus according to Embodiment 1 of the present invention, Fig. 2 is a plan view showing the upper structure of the hoistway in Fig. 1 , and Fig. 3 is a plan view of main parts of the elevator apparatus in Fig. 1 .

In the figure, a pair of car guide rails 2 and a pair of counterweight guide rails 3 are arranged in the hoistway 1 . The car 4 is guided by the car guide rail 2 to ascend and descend in the hoistway 1 . The car 4 has a car frame 5 and a car chamber 6 supported by the car frame 5 . The car frame 5 has a pair of vertical frames 7 , a lower frame 8 fixed between the lower ends of the vertical frames 7 to support the car chamber 6 , and an upper frame 9 fixed between the upper ends of the vertical frames 7 .

The lower frame 8 is provided with first and second main cable connecting parts 11 and 12 . The first and second main cable connecting portions 11 and 12 are arranged symmetrically with respect to the center of gravity of the car 4 . That is, as shown in FIG. 3 , the first main cable connecting portion 11 is arranged behind the straight line C connecting the centers of a pair of car guide rails 2 , and the second main cable connecting portion 12 is arranged in front of the straight line C.

The counterweight 13 is guided by the counterweight guide rail 3 to move up and down in the lifting channel 1 . In addition, the counterweight 13 is arranged behind the car 4 when viewed from the lobby side.

In the upper part of the hoistway 1, an installation frame 14 is disposed. The mounting frame 14 is fixed to the upper ends of the car guide rail 2 and the counterweight guide rail 3 . A driving device (hoist) 15 for raising and lowering the car 4 and the counterweight 13 is mounted on the mounting frame 14 .

The drive device 15 has a drive device body 16 and a drive sheave 17 that is rotated by the drive device body 16 . In addition, the driving device 15 is arranged horizontally in a state in which the rotating shaft of the driving sheave 17 extends vertically. The driver body 16 has a thin motor whose axial dimension is smaller than the diameter.

On the mounting frame 14 , the first and second car-side return pulleys 18 and 19 , the counterweight-side return pulley 20 , and the direction change pulley 21 are mounted. The rotation shaft of the first car-side return pulley 18 is arranged above the first main rope connecting portion 11 so as to extend horizontally in the depth direction of the car 4 (the vertical direction in FIG. 3 ). The rotation shaft of the second car-side return pulley 19 is arranged above the second main rope connecting portion 12 so as to extend horizontally in the depth direction of the car 4 (the vertical direction in FIG. 3 ).

The counterweight-side return wheel 20 is disposed above the counterweight 13 so that its rotational axis extends horizontally. In addition, the driving device 15, the first and second car-side return wheels 18, 19, the counterweight-side return wheel 20, and the direction change pulley 21 are arranged on the car 4 so as to overlap with the car 4 in the vertical projection plane. above.

On the driving sheave 17, a main rope group 22 for suspending the car 4 and the counterweight 13 in the hoistway 1 is wound. The main cable group 22 has a plurality of first main cables 23 and a plurality of second main cables 24 . Here, the number of first main cables 23 is the same as the number of second main cables 24 .

In addition, as the first and second main cables 23 and 24, for example, resin-coated, highly flexible composite material ropes are used. Thereby, the diameters of the drive sheave 17, the first and second car-side return pulleys 18, 19, the counterweight-side return pulley 20, and the direction change pulley 21 can be reduced.

The first main cable 23 has a first end connected to the first main cable connecting portion 11 and a second end connected to the upper portion of the counterweight 13 . The second main cable 24 has a first end connected to the second main cable connecting portion 12 and a second end connected to the upper portion of the counterweight 13 .

The first main rope 23 is wound in the order of the first car-side return sheave 18, the drive sheave 17, and the counterweight-side return sheave 20 from the first end to reach the second end. The second main rope 24 is wound up in the order of the second car side return pulley 19, the direction change pulley 21, the driving sheave 17, and the counterweight side return pulley 20 from the first end, and reaches the second end. .

That is, the first main rope 23 and the second main rope 24 connected to the counterweight 13 are connected to the car 4 so as to branch in two directions on the driving sheave 24 .

In addition, a control panel 25 for controlling devices such as the drive unit 15 is mounted on the mounting frame 14 . The driving device 15, the first and second car side return wheels 18, 19, the counterweight side return wheel 20, the direction changing pulley 21, and the control panel 25 are mounted on a common mounting frame 14 to form a unit.

The direction changing pulley 21 is arranged substantially horizontally, but in order to minimize the entry angle of the second main rope 24, the rotation axis of the direction changing pulley 21 is slightly inclined relative to the vertical direction.

In such an elevator device, since the main cable group 22 is divided into first and second main cables 23, 24, and the first and second main cable connection parts 11, 12 arranged symmetrically with respect to the center of gravity of the car 4 Suspension, so car 4 can be suspended into the state that its center of gravity is stable. Thereby, the reaction force due to the eccentric load can be prevented from acting on the car guide rail 2, and the riding mood can be improved.

In addition, since the first and second main cable connecting parts 11 and 12 are arranged on the lower frame 8 of the car 4, there is no need to provide a connecting part of the main cable group 22 on the upper part of the car 4. Therefore, the size of the upper portion of the car 4 can be reduced, the driving device 15 can be arranged in the upper portion of the hoistway 1, and the increase in the height dimension of the hoistway 1 can be suppressed.

In addition, since the car 4 is directly suspended by 1:1 ropes, the structure is simple and the rotational speed of the driving device 15 can be kept low. Therefore, even if the driving device 15 is disposed in the hoistway 1, an elevator apparatus that can run quietly with low vibration and noise can be provided.

In addition, since the distance from the driving sheave 17 to the first car side return pulley 18, the distance from the drive sheave 17 to the direction change pulley 21, and the distance from the direction change pulley 21 to the second car side return pulley can be sufficiently ensured The distance of 19, so can prevent the wearing and tearing of driving sheave 17, and can prolong the life-span of main rope group 22 and reduce maintenance cost.

In addition, since the drive unit 15, the first and second car-side turn-back wheels 18, 19, the counterweight-side turn-back pulley 20, and the direction change pulley 21 are arranged on the car 4 so as to overlap with the car 4 in the vertical projection plane. Therefore, the top view area of the lifting passage 1 can be reduced, and the size of the lifting passage 1 can be compacted.

In addition, since the first and second car side turn-back wheels 18 and 19 are arranged parallel to each other on both sides of the straight line C connecting the pair of car guide rails 2, the load can be evenly applied to the installation frame 14 and the guide rails 2. , 3, can make the structure stable.

In addition, since the first and second car side turn-back wheels 18, 19 are arranged such that their rotating shafts extend along the depth direction of the car 4 (the up-down direction in FIG. 3), the structure can be simplified and assembly is easy.

Implementation form 2

Next, Fig. 4 is a plan view showing main parts of an elevator apparatus according to Embodiment 2 of the present invention. In the figure, the car 4 has first and second side surfaces 4a, 4b facing each other. In addition, the car 4 has first and second corner portions 4c and 4d that form diagonal corners.

In the hoistway 1, first and second car guide rails 31 and 32 for guiding the car 4 to go up and down are provided. The first car guide rail 31 is fixed to the first hoistway wall 1a of the hoistway 1 so as to face the first corner. The second car guide rail 32 is fixed to the second hoistway wall 1b facing the first hoistway wall 1a so as to face the second corner. Therefore, the engaging portions (guide shoes) of the car 4 with the car guide rails 31, 32 are arranged on the first and second corner portions 4c, 4d.

On the lower frame 8 of the car 4, first and second main rope connecting parts 33, 34 are provided. The first and second main rope connecting parts 33 and 34 are arranged symmetrically with respect to the center of gravity of the car 4 . That is, the first main cable connecting portion 33 is arranged on the first corner portion 4c, and the second main cable connecting portion 34 is arranged on the second corner portion 4d.

On the installation frame 14 (Fig. 1) that is arranged in the upper part of the hoistway 1, the first and second car side return wheels 35, 36, the first and second counterweight side return wheels 37, 38 and direction conversion are carried. pulley39. The rotation shaft of the first car-side return pulley 35 is arranged above the first main rope connecting portion 33 so as to extend horizontally. The rotation shaft of the second car-side return pulley 36 is arranged above the second main rope connecting portion 34 so as to extend horizontally.

The rotation axes of the first and second counterweight-side return wheels 37 and 38 are arranged above the counterweight 13 so as to extend horizontally. In addition, the driving device 15, the first and second car side return wheels 35, 36, the first and second counterweight side return wheels 37, 38, and the direction change pulley 39 are overlapped with the car 4 in the vertical projection plane. Arranged above the car 4.

On the driving sheave 17, a main rope group 22 for suspending the car 4 and the counterweight 13 in the hoistway 1 is wound. The main cable group 22 has a plurality of first main cables 23 and a plurality of second main cables 24 . Here, the number of first main cables 23 is the same as the number of second main cables 24 .

The first main cable 23 has a first end connected to the first main cable connecting portion 33 and a second end connected to the upper portion of the counterweight 13 . The second main cable 24 has a first end connected to the second main cable connecting portion 34 and a second end connected to the upper portion of the counterweight 13 .

The first main rope 23 is wound around in the order of the first car-side return sheave 35, the drive sheave 17, and the first counterweight-side return sheave 37 from the first end, and reaches the second end. The second main rope 24 is wound up in the order of the second car side return pulley 36, the direction change pulley 39, the driving sheave 17 and the second counterweight side return pulley 38 from the first end, and reaches the first end. two ends.

The direction changing pulley 39 is arranged substantially horizontally, but the rotation axis of the direction changing pulley 39 is slightly inclined with respect to the vertical direction in order to minimize the entry angle of the second main rope 24 .

Next, FIG. 5 is a front view showing the first and second weight-side return wheels 37 and 38 in FIG. 4 . The installation heights of the first and second counterweight side return pulleys 37 and 38 are different from each other according to the heights of the first and second main cables 23 and 24 drawn out from the drive sheave 17 .

In such an elevator device, since the main cable group 22 is divided into the first and second main cables 23, 24, and the first and second main cable connecting parts 33, 34 arranged symmetrically with respect to the center of gravity of the car 4 are used for suspending Hang, so car 4 can be suspended into the state that its center of gravity is stable. Thereby, the reaction force due to the eccentric load can be prevented from acting on the car guide rails 31, 32, and the mood of the passenger elevator can be improved.

In addition, since the first and second main rope connecting parts 33 and 34 are arranged on the lower frame 8 of the car 4, it is not necessary to provide the connecting part of the main rope group 22 on the upper part of the car 4. Therefore, the size of the upper portion of the car 4 can be reduced, the driving device 15 can be arranged in the upper portion of the hoistway 1, and the increase in the height dimension of the hoistway 1 can be suppressed.

In addition, since the car 4 is directly suspended by 1:1 ropes, the structure is simple, and the rotational speed of the driving device 15 can be kept low. Therefore, even if the driving device 15 is arranged in the hoistway 1, an elevator apparatus that can run quietly with low vibration and low noise can be provided.

In addition, since the driving device 15, the first and second car side return wheels 35, 36, the first and second counterweight side return wheels 37, 38, and the direction conversion pulley 39 overlap with the car 4 in the vertical projection plane. It is arranged above the car 4, so the top view area of the elevator passage 1 can be reduced, and the elevator passage 1 is compact in size.

In addition, since the first main cable connecting portion 33 is arranged on the first corner portion 4c and the second main cable connecting portion 34 is arranged on the second corner portion 4d, the first and second main cable connecting portions can be connected to each other. 33,34 are arranged in the exterior size of car 4, can reduce the overlooking area of hoistway 1. Similarly, since the engaging parts of the car 4 and the car guide rails 31, 32 are also arranged on the first and second corners 4c, 4d, the engaging parts do not protrude from the car 4, and the size of the hoistway 1 can be reduced. the viewing area of .

In addition, since the installation heights of the first and second counterweight side return pulleys 37, 38 are different from each other according to the heights of the first and second main cables 23, 24 drawn out from the drive sheave 17, it is possible to reduce the size of the main cables. The angle of entry of 23,24 to the drive sheave 17 can prevent the partial wear of the drive sheave 17 and the wear of the main rope 23,24.

Here, the difference in height between the first and second counterweight side turn-back pulleys 37, 38, if both the main cables 23, 24 are one, only needs to be in a state where the center-to-center dimension of the main cables 23, 24 is maintained. In addition, if there are two main cables 23 and 24, it is only necessary to make it twice the center-to-center dimension of the adjacent main cables 23 and 24 . That is, it is only necessary to make the maximum value of the entry angles of the plurality of main cables as small as possible. In addition, the entry angles of the main cables 23, 24 to the respective pulleys 17, 35-39 are preferably set within 1.5 degrees.

In addition, in the second embodiment, two weight-side return wheels 37 and 38 are used, but three or more may be used.

Implementation form 3

Next, Fig. 6 is a plan view showing main parts of an elevator apparatus according to Embodiment 3 of the present invention. In the figure, the counterweight 13 is disposed on the side of the car 4 so as to face the first side surface 4a of the car 4 . In addition, contrary to Embodiment 2, the first main cable connecting portion 33 is arranged on the second corner portion 4d, and the second main cable connecting portion 34 is arranged on the first corner portion 4c.

The first car-side return pulley 35 is disposed above the first main rope connecting portion 33 . The second car-side return pulley 36 is arranged above the second main rope connecting portion 34 . Above the counterweight 13, first and second counterweight-side return wheels 41 and 42 are arranged.

In addition, the driving device 15; the first and second car side turning wheels 35, 36; the first and second counterweight side turning wheels 41, 42; They are arranged above the car 4 so as to overlap.

FIG. 7 is a cross-sectional view showing the first and second weight-side return wheels 41 and 42 shown in FIG. 6 . The first and second weight-side return wheels 41 and 42 rotate independently about a shared rotating shaft 43 arranged horizontally. The diameters of the first and second weight-side return pulleys 41 and 42 are different from each other according to the heights of the first and second main cables 23 and 24 pulled out from the drive sheave 17 .

In this way, even in an elevator apparatus in which the counterweight 13 is arranged on the side of the car 4, by distributing the main rope group 22 into the first and second main ropes 23, 24, the same effect as that of the second embodiment can be obtained.

In addition, the diameters of the first and second weight-side return pulleys 41, 42 differ from each other according to the heights of the first and second main cables 23, 24 drawn out from the driving sheave 17, so that the main cable 23 can be reduced in size. , 24 to the entry angle of the drive sheave 17. In addition, the common rotating shaft 43 can be used, and the structure can be simplified.

In addition, in the third embodiment, two weight-side return wheels 41 and 42 are used, but three or more may be used.

Claims (11)

1, a kind of lift appliance has:

Hoist trunk;

Be configured in top in the described hoist trunk, have the actuating device body and be the actuating device that the center utilizes the driving rope sheave that described actuating device body rotates with the rotating shaft of vertically extending;

Volume hangs over the main rope group on the described driving rope sheave; And

Utilize described main rope group and be suspended in the described hoist trunk, utilize described actuating device and the car and the counterweight of in described hoist trunk, carrying out lifting, it is characterized in that,

On described car, the 1st and second main rope connecting portion is set with accompanying described car in vertical plane, above the top in described hoist trunk and the described the 1st and second main rope connecting portion, dispose the 1st and second cage side wheel of turning back, described main rope group have the volume hang over described the 1st cage side turn back the wheel on, and with described the 1st main rope connecting portion bonded assembly the 1st main rope and volume hang over described second cage side turn back the wheel on, and with the described second main rope connecting portion bonded assembly, second main rope, the described actuating device and the described the 1st and second cage side wheel of turning back, in vertical plane with described car be configured in overlappingly described car above.

2, lift appliance as claimed in claim 1 is characterized in that, described car has car frame that comprises lower frame and the cage that is bearing on the described lower frame, and the described the 1st and second main rope connecting portion is set on the described lower frame.

3, lift appliance as claimed in claim 1 is characterized in that, the described the 1st and second main rope connecting portion, the center of gravity of described relatively car and balanced configuration.

4, lift appliance as claimed in claim 1 is characterized in that, is configured in top in the described hoist trunk with also having approximate horizontal, changes pulley in described driving rope sheave and described second cage side direction that volume between the wheel hangs with described second main rope of turning back.

5, lift appliance as claimed in claim 4 is characterized in that, the rotating shaft of described direction conversion pulley is for the angle that enters that makes described second main rope reduces vertical direction inclination relatively.

6, lift appliance as claimed in claim 1 is characterized in that, also has the installation frame that is fixed on described hoist trunk internal upper part, and described actuating device, the described the 1st and second cage side wheel of turning back is carried on described installation frame and makes modularity.

7, lift appliance as claimed in claim 1 is characterized in that, described car has the 1st and second bight that makes the diagonal angle mutually, and the described the 1st and second main rope connecting portion is configured on the described the 1st and second bight.

8, lift appliance as claimed in claim 7 is characterized in that, also has the 1st and second car guide rail that relatively is set in the hoist trunk with the described the 1st and second bight, guides described car lifting.

9, a kind of lift appliance has:

Hoist trunk;

Be configured in top in the described hoist trunk, have the actuating device body and be the actuating device that the center utilizes the driving rope sheave that described actuating device body rotates with the rotating shaft of vertically extending;

Volume hangs over the main rope group on the described driving rope sheave; And

Utilize described main rope group and be suspended in the described hoist trunk, utilize described actuating device and the car and the counterweight of in described hoist trunk, carrying out lifting, it is characterized in that,

Above top in described hoist trunk and the described counterweight, dispose the 1st and second counterweight side wheel of turning back, described main rope group have that volume hangs over that described the 1st counterweight side turns back that wheel is gone up and hang over described counterweight bonded assembly the 1st main rope and volume that the described second counterweight side turns back that wheel is gone up and with described counterweight bonded assembly second main rope, the turn back setting height of wheel of the described the 1st and second cage side is according to the height of the described the 1st and second main rope of drawing from described driving rope sheave and different mutually.

10, a kind of lift appliance has:

Hoist trunk;

Be configured in top in the described hoist trunk, have the actuating device body and be the actuating device that the center utilizes the driving rope sheave that described actuating device body rotates with the rotating shaft of vertically extending;

Volume hangs over the main rope group on the described driving rope sheave; And

Utilize described main rope group and be suspended in the described hoist trunk, utilize described actuating device and the car and the counterweight of in described hoist trunk, carrying out lifting, it is characterized in that,

Above top in described hoist trunk and the described counterweight, dispose the 1st and second counterweight side wheel of turning back, described main rope group have that volume hangs over that described the 1st counterweight side turns back that wheel is gone up and hang over described counterweight bonded assembly the 1st main rope and volume that the described second counterweight side turns back that wheel is gone up and with described counterweight bonded assembly second main rope, the turn back diameter of wheel of the described the 1st and second counterweight side is according to the height of the described the 1st and second main rope of drawing from described driving rope sheave and different mutually.

11, lift appliance as claimed in claim 10 is characterized in that, the described the 1st and second counterweight side wheel of turning back is that the center is rotated with shared rotating shaft.

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