CN1476407A - Elevator without mechanical room - Google Patents

Abstract

A machine room-less elevator, wherein a sheave, a cage-side deflector, and a counterweight-side deflector are arranged on a straight line when viewed along a hoistway, and the axes of the sheave, the cage-side deflector, and the counterweight-side deflector are parallel to each other.

Description

Elevator without machine room

technical field

The invention relates to an elevator without a machine room, in which hoisting machines and deflector wheels are arranged on the top of the hoistway.

Background technique

Figures 10 to 13 show traditional 1:1 rope-wrapped elevators without a machine room. In the figure, 1 is the liftway, 2 is the top of the liftway, 3 is the elevator car, 4 is the balance weight, and 5 is the suspension balance weight. 4 is a deflector pulley, 6 is a hoist that is arranged in the top 2 of the lifting road and is composed of a sheave 7 and a motor part 8, 9 is a pair of elevator car side guide rails that guide the elevator car 3 to go up and down, and 10 is to guide the balance weight 4 to go up and down A pair of balance weight side guide rails, 11 is a support member installed on the front end of the elevator car side guide rail 9 and the balance weight side guide rail 10, and 12 is fixed to the support member 11 by an elastic body to hold the hoist 6 and deflector wheel 5 14 is wound on the sheave 7 of the winch 6 and the deflector pulley 5, one end is fixed on the rope fixed end 50 on the top of the balance weight 4, and the other end is fixed on the rope fixed end 51 on the top of the elevator car 3 main rope.

The end of the main rope 14 is fixed to the rope fixed end 50 on the top of the balance weight 4 , and after rising from the rope fixed end 50 along the hoistway 1 , it is wound around the upper side of the deflector pulley 5 . Then, the main rope 14 is extended to the sheave 7 of the winch 6 .

Next, the main rope 14 is wound around the sheave 7 . At this time, the main rope 14 extending from the winch 5 starts to be wound from the lower part of the sheave 7, and after being wound around the entire circumference in the counterclockwise direction of FIG. On the rope fixed end 51 of the elevator car 3.

In the elevator without a machine room of the above-mentioned structure, once the main rope 14 is wound around the sheave 7, the main rope 14 forms a part extending from the deflector sheave 5 to the sheave 7 and a part extending from the sheave 7 to the elevator car 3. The parts intersect each other, but the main ropes 14 do not collide with each other.

That is, the hoist 6 is installed so that the sheave 7 is within 1.5 degrees of horizontal eccentricity and 2.5 degrees of vertical eccentricity with respect to the deflection pulley 5 . 12 and 13 show the positional relationship between the sheave 7 and the deflector 5 in FIG. 10, FIG. 12 is a plan view thereof, and FIG. 13 is a side view thereof. In Fig. 12 and Fig. 13, the X-axis, Y-axis and Z-axis represent the orthogonal coordinate system, the X-axis is the rotation axis direction of the deflector wheel 5, the Y-axis is the horizontal direction, and the X-axis is the vertical direction.

In the elevator without a machine room configured as described above, when the motor unit 8 of the hoist 6 is driven, the sheave 7 rotates, and the main rope 14 is moved by traction force. The elevator car 3 and the balance weight 4 carry out up and down reverse lifting motions respectively along with the movement of the main rope 14 .

The traditional elevator without a machine room adopts the above structure, because the winch 6 is horizontal relative to the deflector pulley 5, and both sides are inclined relative to the vertical, so when the steel wire rope is used for the main rope 14, it is inevitable that the sheave 7 and the deflector pulley 5 will be formed. The corners of the respective rope grooves rub against each other, and when a belt is used for the main rope 14, an unbalanced load is applied to the belt, which adversely affects the belt.

Contents of the invention

In order to solve the above-mentioned problems, the object of the present invention is to provide a method for arranging the wheels by forming the grooves of the plurality of wheels in which the main ropes are wound in a straight line, and winding the main ropes on these wheels to ensure traction and main ropes. A machine-room-less elevator that can extend the life of the rope and reduce the installation space in the vertical direction of the hoistway.

In the elevator without a machine room of the present invention, when viewed along the hoistway, the sheave, the side deflection guide pulley of the elevator car, and the side deflection guide pulley of the balance weight are arranged on a straight line, and the sheave, the side deflection guide wheel of the elevator car The respective axes of the deflection guide wheels and the balance weight side deflection guide wheels are parallel, and the main rope is wound up on the upper side of the balance weight side deflection guide wheels after rising from the balance weight along the lifting path, and then wound on the The sheave and the side deflection guide wheel of the elevator car descend in the liftway to reach the elevator car.

In addition, in the elevator without a machine room of the present invention, the sheave, the balance weight deflection guide pulley, and the idler pulley are arranged on a straight line when viewed along the hoistway, and the sheave, the balance weight deflection The respective axes of the guide wheels and the idler wheels are parallel, and the main rope rises from the balance weight along the lifting path and is wound on the side deflection guide wheels of the balance weight, the idler wheels and the sheave , and then descend in the hoistway to reach the elevator car.

In addition, in the elevator without a machine room of the present invention, the sheave and the car side deflection pulley are arranged on a straight line when viewed along the hoistway, and the idler pulley is arranged on the lower side of the sheave in an overlapping manner, In addition, the respective axes of the idler pulley, the pulley, and the side deflection pulley of the elevator car are parallel, and the main rope is wound around the idler pulley and the elevator car after rising from the balance weight along the lifting path. On the pulley and the side deflection guide wheel of the elevator car, descend in the lifting path to reach the elevator car.

Also, in the elevator without a machine room of the present invention, the sheave, the idler sheave, and the car side deflection pulley are arranged on a straight line when viewed along the hoistway, and the sheave, the idler sheave, and the The respective axes of the side deflection pulleys of the elevator car are parallel, and the main rope rises from the balance weight along the lifting path and is wound on the upper side of the pulley, the lower side of the idler pulley and the elevator. The upper side of the car side deflector pulley descends in the hoistway to reach the elevator car.

A brief description of the drawings

Fig. 1 is a perspective view of an elevator without a machine room according to Embodiment 1 of the present invention.

Fig. 2 is a plan view of the top of the hoistway in Fig. 1 .

Fig. 3 is a sectional view taken along line A-A of Fig. 2 .

Fig. 4 is a perspective view of an elevator without a machine room according to Embodiment 2 of the present invention.

Fig. 5 is a plan view of the top of the hoistway in Fig. 4 .

Fig. 6 is a perspective view of an elevator without a machine room according to Embodiment 3 of the present invention.

FIG. 7 is a plan view of the top of the hoistway in FIG. 6 .

Fig. 8 is a perspective view of a belt end fixture.

Fig. 9 is a sectional view taken along line B-B of Fig. 8 .

Fig. 10 is a perspective view of a conventional elevator without a machine room.

Fig. 11 is a plan view of the top of the hoistway in Fig. 10 .

Fig. 12 is a plan view showing the positional relationship between the sheave and the deflecting pulley in Fig. 10 .

FIG. 13 is a side view of FIG. 10 .

Detailed ways

Embodiments to which the present invention is applied will be described below with reference to the drawings. The same and equivalent members or parts in each embodiment are described with the same symbols.

Example 1

Fig. 1 is a perspective view of an elevator without a machine room in Embodiment 1 of the present invention, Fig. 2 is a plan view of the top of the hoistway in Fig. 1, and Fig. 3 is a sectional view taken along the line A-A of Fig. 2 .

In the figure, 1 is the lift road, 2 is the top of the lift road, 3 is the elevator car, 4 is the balance weight, 5 is the deflection wheel of the suspension balance weight 4, and 6 is arranged in the top 2 of the lift road, and is driven by the pulley 7 The winch composed of the motor part 8, 9 is a pair of elevator car side guide rails for guiding the elevator car 3 up and down, 10 is a pair of balance weight side guide rails for guiding the balance weight 4 up and down, 11 is installed on the elevator car side guide rails 9 and the balance weight The supporting members of the respective front ends of the side guide rails 10, 13 are elastic bodies fixed on the supporting member 11 to prevent the driving vibration of the hoist 6 from being transmitted to the building, 12 are mechanical platforms fixed on the supporting member 11 through the elastic body 13, 14 It is a main rope whose one end is fixed on the rope fixed end 50 on the top of the balance weight 4 and the other end is fixed on the rope fixed end 51 on the elevator car 3 top. 15 is the side deflection guide pulley of the elevator car supported on the mechanical platform 12, and the respective axes are arranged in a horizontal and parallel row between the pulley 7 and the balance weight deflection pulley 5. The respective grooves of the car side deflecting pulley 15 and the balance weight deflecting pulley 5 are arranged on a straight line.

16 is a control panel that is fixed on the mechanical platform 12 and controls the elevator, 17 is a speed regulator that is fixed on the mechanical platform 12 and detects the speed of the elevator and stops in an emergency, and 18 is a swingable end that is arranged on the mechanical platform 12 and is flexible. Escalator for maintenance. The height of control panel 16, governor 17 and escalator 18 is all lower than the height of winch. In addition, in FIG. 1, the speed governor 17 and the escalator 18 are omitted.

The end of the main rope 14 is fixed to the rope fixed end 50 on the upper part of the balance weight 4 , and rises from the rope fixed end 50 along the hoistway 1 and is wound around the upper side of the deflector pulley 5 . Then, the main rope 14 is extended to the sheave 7 of the winch 6 .

Next, the main rope 14 is wound around the sheave 7 . At this time, the main rope 14 extending from the deflecting pulley 5 starts to be wound from the lower part of the sheave 7, and after being wound for half a circle in the counterclockwise direction of FIG. Hang half a circle, then descend and extend to the elevator car 3 in the hoistway 1, and finally be fixed on the rope fixed end 51 of the elevator car 3.

With this elevator without a machine room, since the guide pulley 5, the car side deflector pulley 15, and the sheave 7 are arranged on a straight line, the main rope 14 will not engage with the respective grooves for no reason, and the main rope 14 can be ensured. Long life and elevator winch traction.

Also, the mechanical platform 12 is accommodated in the area in the height direction of the winch 6, and because the heights of the control panel 16, the speed regulator 17 and the escalator 18 for maintenance are all lower than the height of the winch, the height of the hoistway top 2 can be reduced. space.

Also, in this elevator without a machine room, the winding angle of the main rope 14 relative to the sheave 7 should be set at the minimum winding angle required to ensure the minimum traction force, that is, more than 120°, and the maximum can reach about 270°, which is suitable for Where a large traction force is required.

Also, the axes of the elevator car side deflector pulley 15, the sheave 7, and the balance weight deflector pulley 5 are horizontal and parallel, but not necessarily horizontal.

In addition, if the main rope 14 is replaced by a flat belt with multiple strings arranged side by side, the diameter of the sheave will decrease, and the unbalanced moment of the elevator will decrease. Reduced diameter reduces space at the top of the hoistway.

Example 2

Fig. 4 is a perspective view of an elevator without a machine room according to Embodiment 2 of the present invention. Fig. 5 is a plan view of the top of the hoistway in Fig. 4 .

In this embodiment, viewed along the lifting road 1, the sheave 7, the idler pulley 19 and the balance weight deflecting pulley 5 of the hoisting machine 6 are linearly fixed on the machine table 12. The respective axes of pulley 7, idler wheel 19 and balance weight deflector wheel 5 are horizontal and parallel.

The end of the main rope 14 is fixed to the rope fixed end 50 on the upper part of the balance weight 4 , and is wound on the upper side of the deflector pulley 5 after rising from the rope fixed end 50 along the hoistway 1 . Then, after the main rope 14 is wound around the lower side of the idler sheave 19 for half a turn, it is wound around the upper side of the sheave 7 for half a turn. Then, it descends and extends to the elevator car 3 in the hoistway 1, and is finally fixed to the rope fixing end 51 of the elevator car 3.

With this embodiment, the winding angle of the main rope 14 to the sheave 7 can be adjusted at the position of the idler pulley 19 fixed on the machine table 12, so a predetermined traction force can be ensured.

Moreover, since the sheave 7, the idler pulley 19, and the weight deflection pulley 5 are arranged on a straight line, and their respective axes are horizontal and parallel, the life of the main rope 14 can be extended.

Again, the height of idler pulley 19 is lower than the height of winch 6, and the same as embodiment 1, also can reduce the space of hoistway top 2.

In addition, the respective axes of the sheave 7, the idler wheel 19 and the balance weight deflecting wheel 5 may not be horizontal.

Example 3

Fig. 6 is a perspective view of an elevator without a machine room in Embodiment 3 of the present invention, and Fig. 7 is a plan view of the top of the hoistway in Fig. 6 .

In this embodiment, the winch 6 is fixed on the mechanical platform 12 and arranged above the balance weight 4 on the top 2 of the liftway. The idler pulleys 19 are disposed on the lower side of the hoist 6 in an overlapping manner. Also, viewed along the hoistway 1, the sheave 7 and the car side deflection pulley 15 are linearly fixed on the machine table 12, and their axes are parallel.

The end of the main rope 14 is fixed to the rope fixed end 50 on the upper part of the balance weight 4 , and is wound on one side of the idler wheel 19 after rising from the rope fixed end 50 along the hoistway 1 . Then, after the main rope 14 is wound on one side of the sheave 7 for about half a circle, it is wound on the side deflection pulley 15 of the elevator car for about 1/4. Then, the main rope 14 descends and extends to the elevator car 3 in the hoistway 1 , and is finally fixed to the rope fixing end 51 of the elevator car 3 .

In addition, the idler pulley 19, the sheave 7, and the car side deflection pulley 15 are arranged on a straight line, and their respective axes are parallel, so that the life of the main rope 14 can be extended.

Also, not shown, the idler pulley 19 may be arranged between the sheave 7 and the deflection pulley 15 on the elevator car side, and the main rope 14 is wound around the sheave 7 after rising from the counterweight 4 along the hoistway 1. Then, the upper side of the elevator car side deflection guide wheel 15 is wound for about half a circle, and finally descends and extends to the elevator car 3 in the hoistway 1. At this time, looking along the lifting road 1, the pulley 7, the idler pulley 19 and the side deflection pulley 15 of the elevator car are arranged on a straight line, and the pulley 7, the idler pulley 19 and the side deflection pulley 15 of the elevator car are respectively The axes of the main ropes 14 are parallel, so that the life of the main rope 14 can be extended.

Example 4

FIG. 8 is a perspective view of a fixing member fixed at the end of the belt when the main rope 14 of Embodiment 1 to Embodiment 3 adopts a belt, and FIG. 9 is a cross-sectional view taken along line B-B of FIG. 8 .

In the figure, 20 is a fixture having a plurality of convex portions 20a protruding in the horizontal direction, 21 is a pressing member formed along the convex portions 20a of the fixture 20 and has a concave portion 21a, and the main rope 14 is clamped by bolts 22. Hold between the fixture 20 and the pressing piece 21. A fitting 23 for fixing the end of the folded main rope 14 is provided on the pressing member 21 , and the fitting 23 is fixed to the pressing member 21 by bolts 24 . 25 is a hanging bolt 22, which is combined with the fixture 20 by a pin 26.

According to this embodiment, the main rope 14, that is, the belt, has sufficient holding force similar to the shackle of a generally used wire rope, and not only can realize miniaturization, but also facilitate construction at the installation site.

In addition, although not described in detail in each of the above-mentioned embodiments, it is also possible to use an elevator without a machine room in which Embodiments 1 to 3 are combined in accordance with the dimensional changes of the elevator car or the counterweight.

Also, in each embodiment, the mechanical platform 12 is fixed on the elevator car side guide rail 9 and the counterweight side guide rail 10, but it is also possible to fix the mechanical platform on the wall of the hoistway, that is, the wall or the wall extending along the wall, that is, the wall. on the pillar.

Claims (16)

1. A machine room-free elevator, comprising: liftway; A pair of elevator car side guide rails and a pair of balance weight side guide rails arranged in the hoistway; an elevator car guided on the side guide rails of the elevator car for lifting and lowering in the hoistway; a balance weight that is guided on the balance weight side guide rail and is lifted and lowered in the lift path; The top of the elevator car, which is arranged on the upper side of the uppermost floor stop position of the elevator car in the elevator car, has a motor part and a pulley driven by the motor part, and the elevator car and the Hoist for lifting and lowering the balance weight; One end is fixed to the balance weight, the other end is fixed to the elevator car, and the main rope is used to suspend the elevator car and the balance weight in the long descent path; The side deflection guide pulley of the elevator car with the main rope wound between the elevator car and the pulley; The balance weight side deflection guide pulley of the main rope is wound between the balance weight and the pulley, and it is characterized in that, When viewed along the liftway, the sheave, the side deflector pulley of the elevator car and the side deflection pulley of the balance weight are arranged on a straight line, and the pulley, the side deflection guide pulley of the elevator car The respective axes of the wheel and the counterweight side deflection guide wheel are parallel, After the main rope rises from the balance weight along the lifting path, it is wound on the upper side of the balance weight side deflector pulley, and then wound around the sheave and the elevator car side deflector pulley. up, then descend in the hoistway to the elevator car. 2 . The elevator without a machine room according to claim 1 , wherein the respective axes of the sheave, the side deflection guide pulley of the elevator car and the side deflection guide pulley of the balance weight are horizontal. 3 . 3. A machine room-free elevator, comprising: liftway; A pair of elevator car side guide rails and a pair of balance weight side guide rails arranged in the hoistway; an elevator car guided on the side guide rails of the elevator car for lifting and lowering in the hoistway; a balance weight that is guided on the balance weight side guide rail and is lifted and lowered in the lift path; The top of the elevator car, which is arranged on the upper side of the uppermost floor stop position of the elevator car in the elevator car, has a motor part and a pulley driven by the motor part, and the elevator car and the Hoist for lifting and lowering the balance weight; One end is fixed to the balance weight, the other end is fixed to the elevator car, and the main rope is used to suspend the elevator car and the balance weight in the long descent path; The side deflection guide pulley of the elevator car with the main rope wound between the elevator car and the pulley; The balance weight side deflection guide pulley of the main rope is wound between the balance weight and the pulley, and it is characterized in that, When viewed along the lifting road, the pulley, the balance weight side deflection guide wheel and the idler wheel are arranged on a straight line, and the pulley, the balance weight side deflection guide wheel and the The respective axes of the idler wheels are parallel, The main rope rises from the balance weight along the lifting path and is wound on the upper side of the balance weight side deflection guide wheel, the lower side of the idler wheel and the upper side of the pulley, It then descends in the hoistway to the elevator car. 4. The elevator without a machine room according to claim 3, characterized in that the respective axes of the sheave, the counterweight side deflection guide pulley and the idler pulley are horizontal. 5. A machine room-free elevator, comprising: liftway; A pair of elevator car side guide rails and a pair of balance weight side guide rails arranged in the hoistway; an elevator car guided on the side guide rails of the elevator car for lifting and lowering in the hoistway; a balance weight that is guided on the balance weight side guide rail and is lifted and lowered in the lift path; The top of the elevator car, which is arranged on the upper side of the uppermost floor stop position of the elevator car in the elevator car, has a motor part and a sheave driven by the motor part, and the elevator car and the Hoist for lifting and lowering the balance weight; One end is fixed to the balance weight, the other end is fixed to the elevator car, and the main rope is used to suspend the elevator car and the balance weight in the long descent path; The side deflection guide pulley of the elevator car with the main rope wound between the elevator car and the pulley; The balance weight side deflection guide pulley of the main rope is wound between the balance weight and the pulley, and it is characterized in that, The sheave and the car side deflection pulley are arranged on a straight line when viewed along the liftway, and the idler pulley is arranged on the lower side of the sheave in an overlapping manner, and the The respective axes of the idler pulley, the sheave and the side deflection guide pulley of the elevator car are parallel, After the main rope rises from the balance weight along the lifting path, it is wound on the idler pulley, the sheave and the side deflection pulley of the elevator car, and then passes through the lifting path. Descend to the elevator car. 6. The elevator without a machine room according to claim 5, wherein the respective axes of the sheave and the side deflection pulley of the elevator car are horizontal. 7. A machine room-free elevator, comprising: liftway; A pair of elevator car side guide rails and a pair of balance weight side guide rails arranged in the hoistway; an elevator car guided on the side guide rails of the elevator car for lifting and lowering in the hoistway; a balance weight that is guided on the balance weight side guide rail and is lifted and lowered in the lift path; The top of the elevator car is arranged on the upper side of the elevator car above the uppermost floor stop position in the elevator car, and has a motor part and a pulley driven by the motor part, and the elevator car and the elevator car The hoist for raising and lowering the balance weight; One end is fixed to the balance weight, the other end is fixed to the elevator car, and the main rope is used to suspend the elevator car and the balance weight in the long descent path; The side deflection guide pulley of the elevator car with the main rope wound between the elevator car and the pulley; The balance weight side deflection guide pulley of the main rope is wound between the balance weight and the pulley, and it is characterized in that, When viewed along the liftway, the pulley, the idler pulley, and the side deflection pulley of the elevator car are arranged on a straight line, and the pulley, the idler pulley, and the elevator car The respective axes of the side deflection guide wheels are parallel, After the main rope rises from the balance weight along the lifting path, it is wound around the upper side of the sheave, the lower side of the idler pulley, and the upper side of the elevator car side deflection pulley. , and then descend in the hoistway to reach the elevator car. 8. The elevator without a machine room according to claim 7, characterized in that the respective axes of the sheave, the idler pulley and the side deflection pulley of the elevator car are horizontal. 9. The elevator without a machine room according to any one of claims 1 to 8, characterized in that the winding angle of the main rope relative to the sheave is 120°-270°. 10. The elevator without a machine room according to any one of claims 1 to 9, characterized in that the main rope is a steel wire rope or a belt. 11. The elevator without a machine room according to claim 5, characterized in that an idler wheel is provided on the lower side of the machine table supporting the winch in the roof of the hoistway. 12. The elevator without a machine room according to any one of claims 1 to 11, wherein the machine table provided in the roof of the hoistway and supporting the hoist is arranged to be accommodated in a region in the height direction of the hoist. 13. The elevator without a machine room as claimed in claim 11 or 12, wherein the machine platform is respectively provided with a control panel for controlling the operation of the elevator, a speed governor for detecting the speed of the elevator to perform an emergency stop, and an escalator for maintenance, Moreover, the height of the control panel, the speed regulator and the maintenance escalator is lower than that of the winch. 14. The elevator without a machine room according to any one of claims 1 to 13, wherein the machine platform is fixed to a certain part of the elevator car side guide rail, the balance weight side guide rail and the wall of the hoistway . 15. The elevator without a machine room according to claim 14, wherein the machine table is fixed to a certain part of the elevator car side guide rail, the balance weight side guide rail and the wall of the hoistway via elastic bodies. 16. The elevator without a machine room according to any one of claims 10, 12 to 15, characterized in that, the end of the belt is composed of a fixing tool having a convex part and a fixing tool having a concave part formed along the protrusion. Compression piece clamping.

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