JP2006151673A - Machine room-less elevator device - Google Patents

Abstract

A machine room-less elevator device capable of effectively utilizing the space of a hoistway is obtained.
A car that moves up and down in an elevator hoistway 1, a vertical projection plane, a car and a balance weight 5 that moves up and down the hoistway in the opposite direction, and a vertical projection plane Provided between the upper car and the hoistway wall, and at least part of the counterweight is disposed directly above the counterweight, and when the counterweight reaches the top of the liftable range, the part is counterbalanced. And a hoisting machine 7 located below the uppermost part of the machine.
[Selection] Figure 4

Description

  The present invention relates to a rope-type machine room-less elevator apparatus.

  In the conventional machine room-less elevator device, which has improved the space efficiency and installation cost of the building by arranging the elevator equipment such as hoisting machine and control panel installed in the elevator machine room in the hoistway In order to shorten the hoistway, in particular to reduce overhead, an elevator balancing weight and a thin hoisting machine are arranged on the vertical projection plane and between the car and one hoistway wall, and the thin hoisting machine There is one in which the machine is arranged further above the range in which the counterweight can be raised and lowered (see, for example, Patent Document 1).

Japanese Patent No. 2593288

  In the machine room-less elevator device described in Patent Document 1, the thin hoisting machine is disposed further above the range in which the counterweight can be raised and lowered, so that there is a limit to shortening the top of the hoistway, that is, overhead. That is, a space for installing a thin hoisting machine is required above the range in which the counterweight can be raised and lowered, and further overhead reduction is impossible. In addition, there is a counterweight guide rail that cannot shorten the vertical length of the thin hoisting machine, so if you need to increase the size of the thin hoisting machine Inevitably, the overhead needs to be increased in accordance with the size of the thin hoisting machine. As a factor of increasing the size of the thin hoisting machine, in the thin hoisting machine using the permanent magnet type synchronous machine, the amount of the permanent magnet is reduced and the diameter of the electric motor is increased in order to obtain a necessary torque. There are cases where the diameter of the motor is increased in order to increase the required torque as the capacity of the car increases.

  Further, when the capacity of the car is increased as described above, it is necessary to increase the weight of the counterweight in accordance with the increased capacity of the car. However, in the conventional machine room-less elevator device as described in Patent Document 1, since the counterweight is arranged in a narrow range between the rear hoistway wall and the car guide rail, the weight of the counterweight is reduced. By increasing it, the total length of the counterweight is extremely increased. In such a case, a sufficient lifting distance required for the counterweight cannot be secured, and the overhead may need to be increased. Even when the capacity of the car is not increased, the same problem as described above occurs when the weight on the car side is extremely increased, such as changing the interior of the car or installing an air conditioner.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a machine room-less elevator apparatus that can effectively utilize the space of the hoistway.

  It is another object of the present invention to provide a machine room-less elevator apparatus that can cope with an increase in the size of a hoisting machine and an increase in the capacity of a car without requiring expansion of the space in the hoistway.

  A machine room-less elevator apparatus according to the present invention is arranged between a car that moves up and down in an elevator hoistway, on a vertical projection plane, between a car and a hoistway wall, and the car is a counterweight that moves up and down in the hoistway in the opposite direction. And provided on the vertical projection plane, between the car and the hoistway wall, and at least part of the counterweight is disposed immediately above the counterweight, and when the counterweight reaches the top of the liftable range, A hoisting machine, a part of which is located below the uppermost part of the counterweight.

  The present invention includes a car that moves up and down in the elevator hoistway, on the vertical projection plane, between the car and the hoistway wall, and the car is lifted up and down in the hoistway in the opposite direction, on the vertical projection plane, It is provided between the car and the hoistway wall, and at least a part of the counterweight is disposed directly above the counterweight, and when the counterweight reaches the top of the liftable range, the part is the top of the counterweight. By using a hoisting machine positioned below the upper part, the space of the hoistway can be used effectively.

  In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
1 is a plan view of a machine room-less elevator apparatus according to Embodiment 1 of the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a side view thereof. 1 to 3, a car 2 that moves up and down in an elevator hoistway 1 has its lift direction changed by engaging guide shoes 2a provided on both upper and lower sides of the car with guide rails 3 for the car. Guided. This car guide rail 3 that guides the raising and lowering direction of the car 2 includes a hoistway wall 1b and 1c that are opposed to each other with a hoistway wall 1a provided with a landing doorway 4 for the elevator on the vertical projection plane. 2 are arranged so as to face each other in a small space formed between them, and are erected over the range in which the car 2 can be raised and lowered from the bottom to the top of the hoistway 1.

  Further, the counterweight 5 that moves up and down in the hoistway 1 in the opposite direction to the car 2 is a hoistway wall 1d on the back side facing the hoistway wall 1a provided with the landing doorway 4 and the car 2 on the vertical projection plane. Between the hoistway walls 1b and 1c to the extent that both end faces thereof face the hoistway walls 1b and 1c with a slight gap. Is provided. In FIG. 1, the case where the width of the counterweight 5 is larger than the width of the car 2 is shown. The counterweight 5 has a substantially concave shape, and an accommodating portion 5a that opens upward is formed in the upper center. The accommodating portion 5a formed at the upper portion of the counterweight 5 has a substantially concave shape that is one step lower than both side portions over a predetermined width. Further, on the side surface of the counterweight 1 on the side of the hoistway wall 1d, groove portions 5b having a substantially concave cross section are formed in the vertical direction at respective positions that are a predetermined distance inside from both end surfaces.

  Each groove portion 5b formed in the counterweight 5 is provided with a guide shoe 5c at the upper and lower portions thereof, and the guide shoe 5c engages with the counterweight guide rail 6 respectively, so that the counterweight 5 The ascending / descending direction is guided. That is, the width of the counterweight 5 is larger than the installation width of the pair of counterweight guide rails 6, between the counterweight guide rail 6 a on the hoistway wall 1 b side and the hoistway wall 1 b, and on the hoistway wall 1 c side. A part of the counterweight 5 is disposed between the counterweight guide rail 6b and the hoistway wall 1c. The balance weight guide rail 6 is partly or entirely disposed in the groove portion 5b of the balance weight 5 on the vertical projection plane, and within the range in which the balance weight 5 can be raised and lowered from the bottom to the top of the hoistway 1. It is erected so as to face each other. The guide shoes 5c provided on the counterweight 5 are disposed so that their openings face each other in order to engage with the counterweight guide rails 6 facing each other.

  In addition, on the top of the hoistway 1, an elevator thin hoisting machine 7 having a driving sheave 7 a and a deflecting wheel 8 are provided between the hoistway wall 1 d and the car 2 on the rear side on the vertical projection plane. Is provided. The thin hoisting machine 7 is partly or wholly disposed between the counterweight guide rails 6 immediately above the counterweight 5 and when the counterweight 5 reaches the uppermost part of the liftable range. The portion disposed immediately above the counterweight 5 is disposed below the uppermost portion of the counterweight 5. On the other hand, as with the thin hoisting machine 7, the deflection wheel 8 disposed between the hoistway wall 1 d on the back side and the car 2 is provided obliquely below the driving sheave 7 a of the thin hoisting machine 7. The ropes formed on the outer circumferential surface are arranged so as to be substantially in line with the ropes formed on the outer circumferential surface of the drive sheave 7a. The deflecting wheel 8 is provided to increase the traction between the driving sheave 7a and the main rope, which will be described later, and to fold back the main rope wound around the driving sheave 7a. Similar to the machine 7, a part or all of the machine 7 is disposed between the uppermost parts of the counterweight guide rail 6. Furthermore, return wheels 9 a and 9 b are provided at the top of the hoistway 1 above the center of the car 2 and above the deflector wheel 8, respectively. The return wheels 9a and 9b are arranged so that the ropes formed on the outer peripheral surface thereof are substantially straight.

  In the machine room-less elevator apparatus having such a configuration, the main rope 10 for suspending the car 2 and the counterweight 5 in a fishing bottle type by a one-to-one roping method is elastically connected at one end to the center upper part of the car 2. In addition, the return wheels 9a and 9b arranged at the top of the hoistway 1, the deflecting wheel 8 and the driving sheave 7a arranged between the tops of the balance weight guide rails 6 are sequentially wound, and the other end is balanced. The weight 5 is elastically connected to the central portion of the accommodating portion 5a. In addition, since the other end part of the main rope 10 is connected with the bottom part of the accommodating part 5a of the counterweight 5, a part of the counterweight 5 is disposed above the connecting part between the counterweight 5 and the main rope 10. Has been.

  FIG. 4 is a detailed view of the essential parts of the elevator apparatus according to Embodiment 1 of the present invention, and shows the arrangement of the devices when the counterweight 5 reaches the uppermost part of its liftable range. . In FIG. 4, when the elevator car 2 stops at the lowest floor, the counterweight 5 that moves up and down in the hoistway 1 in the direction opposite to the car 2 reaches the uppermost part of the liftable range. At this time, a part or all of the thin hoisting machine 7 and the deflecting wheel 8 provided on the top of the hoistway 1 are respectively disposed in the accommodating part 5 a formed on the upper part of the counterweight 5. That is, when the counterweight 5 reaches the uppermost part of the liftable range, the lowermost part of the thin hoisting machine 7 and the lowermost part of the deflecting wheel 8 are located below the uppermost part of the counterweight 5. Has been placed. A predetermined gap is formed between the counterweight 5 and the thin hoisting machine 7 and the deflecting wheel 8 to prevent a contact accident. Moreover, in FIG. 1, although the car 2 side part of the thin hoisting machine 7 is arranged so as to be outside the housing part 5a, the counterweight 5 is thickened so that all of it is in the housing part 5a. You may comprise so that it may arrange | position.

  According to Embodiment 1 of the present invention, at least a part of the thin hoisting machine 7 provided at the top of the hoistway 1 has a counterweight when the counterweight 5 reaches the uppermost part of the liftable range. Since it is arranged in the accommodating part 5a formed in the upper part of 5, the hoistway 1 can be shortened by the height arranged in the accommodating part 5a. As in the first embodiment, when the counterweight 5 reaches the uppermost part of the liftable range, the entire thin hoist 7 is disposed below the uppermost part of the counterweight 5. In this case, it is not necessary to secure a space for the thin hoisting machine 7 above the counterweight guide rail 6, and the space of the hoistway 1 can be used particularly effectively. Moreover, since the counterweight 5 is provided with the full width between the hoistway walls 1b and 1c, even if the accommodating part 5a is formed in the upper part, sufficient weight is ensured. It is possible. Since the counterweight 5 is disposed between the car 2 and the hoistway wall 1d on the back side on the vertical projection plane, the counterweight 5 is not affected by the car guide rail 3 and is not hoisted. It becomes possible to arrange | position over wall 1b and 1c.

  Further, when it is necessary to increase the size of the thin hoisting machine 7 due to the increase in capacity of the car 2, the accommodating portion 5 a formed on the upper part of the counterweight 5 is matched with the shape of the thin hoisting machine 7. Thus, it is possible to cope with without requiring an increase in overhead. Further, since the counterweight 5 makes the most effective use of the width of the hoistway 1, even if it is necessary to increase its weight, an increase in the length in the vertical direction can be minimized. In addition, when adding a new weight to the counterweight 5, by installing a new weight above the connecting portion with the main rope 10, only the weight of the counterweight 5 is reduced without reducing the lifting distance. It is also possible to increase.

  In addition, in Embodiment 1, although the case where the accommodating part 5a formed in the upper part of the balance weight 5 exhibits a substantially concave shape is shown, the thin hoisting machine 7 installed above this accommodating part 5a and the deflection It goes without saying that the same effect can be obtained even if the storage portion 5 a is formed in accordance with the shape of the vehicle 8. In this case, it is not necessary to form the upper part of the accommodating part 5a in a substantially concave shape, and for example, the accommodating part of the hoisting machine may be formed by dropping a corner on the upper side of the counterweight 5.

Embodiment 2. FIG.
FIG. 5 is a detailed view of the main part of the elevator apparatus according to Embodiment 2 of the present invention, showing the structure of the counterweight 11 and the counterweight guide rail 12 for guiding the counterweight 11 in the up-and-down direction. is there. In FIG. 5, the counterweight 11 that moves up and down in the elevator hoistway 1 is arranged in a space formed between the hoistway wall 1 d on the back side and the car 2 on the vertical projection plane. The hoistway walls 1b and 1c are provided across the hoistway walls 1b and 1c so as to face each other with a slight gap. The counterweight 11 has a substantially concave shape, and an accommodating portion 11a that opens upward is formed at the upper center. The accommodating portion 11a formed at the upper portion of the counterweight 11 has a substantially concave shape that is one step lower than both side portions over a predetermined width. Further, on the side surface of the counterweight 11 on the side of the hoistway wall 1d, a groove portion 11b is formed in the center portion in the vertical direction.

  The counterweight guide rail 12 that guides the lifting and lowering direction of the counterweight 11 includes a support portion 12a fixed to the central portion of the hoistway wall 1d on the back side and a rail portion 12b provided on the support portion 12a. The rail portion 12b engages with the groove portion 11b of the counterweight 11, thereby restricting the movement of the counterweight 5 in the horizontal direction. Further, the counterweight guide rail 12 has a substantially π shape in cross section, and can be raised and lowered at the center of the counterweight 11 from the bottom of the hoistway 1 to the lower part of the thin hoist 7 at the top of the hoistway 1. It is erected across. Unlike the first embodiment, the counterweight guide rail 12 in the second embodiment guides the lifting and lowering direction of the counterweight 5 by one.

  According to the second embodiment of the present invention, the groove portion 11b of the counterweight 11 is formed only at the central portion on the side surface of the hoistway wall 1d side, so that the groove portion 5b is connected to the hoistway wall 1d side as in the first embodiment. Compared with the case of forming on both side portions of the side surface, there are fewer weights to be removed, and the required weight can be easily secured. That is, even when the same weight as the counterweight 5 shown in the first embodiment is required, the counterweight 11 having a lower height can be used. In addition, since only one counterweight guide rail 12 is required, it is possible to improve the installation workability and reduce the installation cost.

It is a top view of the machine room less elevator apparatus in Embodiment 1 of this invention. It is a front view of the machine room less elevator apparatus in Embodiment 1 of this invention. It is a side view of the machine room less elevator apparatus in Embodiment 1 of this invention. It is principal part detail drawing of the machine room less elevator apparatus in Embodiment 1 of this invention. It is principal part detail drawing of the machine room less elevator apparatus in Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hoistway 1a, 1b, 1c, 1d Hoistway wall 2 Car 2a, 5c Guide shoe 3 Car guide rail 4 Platform entrance / exit 5, 11 Counterweight 5a, 11a Housing part 5b, 11b Groove part 6, 6a, 6b, 12 Counterbalance Guide rail for weight 7 Thin hoist 7a Drive sheave 8 Baffle 9a, 9b Return wheel 10 Main rope 12a Support part 12b Rail part

Claims (7)

  A car to be lifted and lowered in an elevator hoistway, arranged on the vertical projection plane, between the car and the hoistway wall, the car being lifted in the reverse direction in the hoistway, and a counterweight on the vertical projection plane, Provided between the car and the hoistway wall, and at least part of the counterweight is disposed immediately above the counterweight, and when the counterweight reaches the top of the liftable range, the part is A machine room-less elevator apparatus comprising a hoisting machine positioned below the uppermost part of the counterweight.   The counterweight is formed with an accommodating portion that opens upward at the top thereof, and the hoisting machine is at least in the accommodating portion of the counterweight when the counterweight reaches the uppermost part of the liftable range. The machine room-less elevator device according to claim 1, wherein a part of the elevator is disposed.   3. The hoisting machine is characterized in that when the counterweight reaches the uppermost part of the liftable range, all of the hoisting machine is located below the uppermost part of the counterweight. Machine room-less elevator equipment.   4. The counterweight according to claim 1, wherein the counterweight is disposed between the hoistway walls facing each other with the hoistway wall in which the counterweight is disposed between the cages interposed therebetween. The machine room-less elevator device according to any one of the above.   5. The machine room-less elevator device according to claim 1, wherein the counterweight is disposed between the rear hoistway wall and the car on the vertical projection plane.   The counterweight is characterized in that its elevating direction is guided by a pair of counterweight guide rails standing in the hoistway, and its width is larger than the installation width of the pair of counterweight guide rails. The machine room-less elevator device according to any one of claims 1 to 5.   6. The machine room-less elevator according to claim 1, wherein the counterweight is guided in an ascending / descending direction by a single counterweight guide rail standing in the hoistway. apparatus.

Images