JP2005089093A - Double-deck elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To more safely perform adjustment between stories by manual operation. <P>SOLUTION: The double-deck elevator is constituted by a first bevel gear 31 mounted to a ball screw 8 at a required position of a car frame upper part of an adjustment mechanism 6 between stories for adjusting a distance between an upper car 2 and a lower car 3; a second bevel gear 32 advanceably/retreatably engaged with the first bevel gear; a shaft body 35 for fixing the second bevel gear to one end; a handle 36 removably mounted to the other end of the shaft body and generating rotation driving force by manual rotation operation; a gear box 37 provided on the shaft body and varying a movement amount in the adjustment mechanism 6 between stories; and a scale 38 applied so as to visually recognize a movement amount by the adjustment mechanism 6 between stories along a circumference of the ball screw 8 positioned at an upper part more than the first bevel gear 31. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a double deck elevator having a floor adjustment mechanism that adjusts the distance between an upper car and a lower car that are arranged vertically in a car frame, and more particularly, a floor adjustment mechanism. The present invention relates to a double deck elevator that is operated by a method other than the electric power supplied to the elevator car.

  In recent high-rise buildings and the like, a double deck elevator has been installed from the viewpoint of improving the efficiency of the space in the building and the transportation efficiency of passengers. This double deck elevator is arranged in such a way that two passenger cars are lined up and down in the car frame, and the car frame and the two car are used as a car unit, and the car unit is moved up and down in the hoistway. Yes.

  The distance between the upper car and the lower car in this car frame is determined to correspond to the distance between the upper and lower floors adjacent to each other. When the car frame stops, the upper car and the lower car It is configured to land on the upper and lower floors.

  However, the height of each floor of the building is not always constant. Therefore, in recent years, an inter-floor adjustment mechanism that can adjust the distance between the upper car and the lower car has been incorporated, and the upper car and the lower car can be adjusted according to the floor height between the floors to be landed. A double-deck elevator that can automatically adjust the interval is being developed.

  As shown in FIG. 5, the double deck elevator provided with such an inter-floor adjusting mechanism is horizontally disposed between a pair of left and right vertical frames 1a, 1a and upper, middle, and lower ends of the vertical frames 1a, 1a. A car frame 1 is constituted by an upper beam 1b, an intermediate beam 1c, and a lower beam 1d that are installed on the car frame. An upper car 2 is installed in the space between the upper beam 1b and the intermediate beam 1c on the upper side of the car frame 1. The lower car 3 is arranged in the space between the intermediate beam 1c and the lower beam 1d on the lower side of the car frame 1. A car unit 4 is constituted by the car frame 1 and the cars 2 and 3.

  A main rope 5 is wound around a main sheave (not shown) of the hoisting machine, a car unit 4 on one end side of the main rope 5 and a counterweight (not shown) on the other end side of the rope. Are suspended, and the car unit 4 and the counterweight are raised and lowered in opposite directions in the hoistway by forward and reverse rotation of the main sheave.

  Further, the car frame 1 is provided with a floor adjustment mechanism 6 for adjusting the distance between the car 2 and the car 3. The inter-story adjustment mechanism 6 includes a pair of left and right inter-story drive motors 7 installed on the upper part of the upper beam 1b, and a ball screw 8 attached to the rotating shaft of the inter-story drive motors 7 and extending downward in the car frame 1. And a ball screw nut 9 provided in the upper car 2 and screwed with the upper section of the ball screw 8, and a ball screw provided in the upper part of the lower car 3 and screwed with the lower section of the ball screw 8. A nut 10 is provided.

  Screw portions 8a and 8b are formed in the upper section and the lower section of the ball screw 8, respectively. These screw sections 8a and 8b are protected so as to be covered with a housing 11 shown in cross section, and are connected by an intermediate connecting section 8c. Yes. The screw portions 8a and 8b are formed so that the screw directions are opposite to each other. When the floor drive motor 7 is driven to rotate based on a command from the floor adjustment control device 12 above the car frame 1, the ball screw The upper car 2 attached to the screw part 8a of the upper section and the lower car 3 attached to the screw part 8b of the lower part of the ball screw are moved away from each other and approached to each other. The interval is adjustable.

  Further, when the cars 2 and 3 move beyond the normal movement section due to the control abnormality of the floor adjustment control device 12, the operation limit is applied to the car frame 1 or the like in order to forcibly stop the floor control. Limit switches 13 and 14 are attached. That is, the operation limit switch 13 is installed before the expansion side operation limit, and the operation limit switch 14 is installed before the contraction side operation limit.

  Working handrails 15 and 16 are provided on the upper portions of the cars 2 and 3, and working tables 17 and 18 having a base plate and handrail members are provided on the upper beams 1b and 1d. .

  By the way, in the double deck elevator as described above, since the cars 2 and 3 are connected to the ball screw 8 via the ball screw nuts 9 and 10, the horizontal adjustment of the cars 2 and 3 is performed at the time of installation adjustment. As shown in FIG. 6, from the viewpoint of preventive measures against unexpected fall of each of the cars 2, 3, between the lower side of the car 2 and the intermediate beam 1c and between the lower side of the car 3 and the lower beam 1d. The interposition members 19 and 20 are sandwiched between the two and the left and right intermediate connection portions 8c, and one of the intermediate connection portions 8c is manually rotated to adjust the level.

  However, when the intermediate connecting portion 8c is rotated manually, the installation worker has to enter between the car 2 and the car 3 to work, and the scaffolding becomes very unstable. The problem of workability comes out.

  In addition, when the elevator is in operation, the floor adjustment operation may become abnormal and the normal maximum or minimum floor length may be exceeded, but this condition is detected and the operation limit switch 13 or 14 is turned off. The movement of the cars 2 and 3 is stopped. After the movement of the passenger cars 2 and 3 is stopped, the double deck elevator is restored after the operation limit switch 13 or 14 is turned off, so that the circuit of the switch 13 or 14 is short-circuited. The operation of the elevator is returned by operating the floor drive motor 7 and performing the floor adjustment by the floor adjustment mechanism 6.

  However, when the floor adjustment mechanism 6 operates abnormally due to a control abnormality of the control device 12, the floor drive motor 7 may not be operated. In such a case, as shown in FIG. 7, an operator gets on the work table 17 and connects the brake release device 21 to the floor drive motor 7 to forcibly release the brake of the floor drive motor 7. After that, the elevator is returned manually.

  As the manual return method, there are a case where the floor adjustment mechanism 6 passes the maximum floor length corresponding to the switch 13 and becomes abnormal, and a case where the floor adjustment mechanism 6 passes the minimum floor length corresponding to the switch 14 and becomes abnormal. However, in the former case, a method of manually rotating the intermediate connecting portion 8c, or lifting the car 3 with a chain block or the like (not shown) with the intermediate beam 1c as a suspension is taken. .

  On the other hand, in the latter case, since the cars 2 and 3 are approaching each other, the car cannot enter the upper part of the car 3 and thus the intermediate connecting portion 8c cannot be manually rotated. In such a case, a method is used in which the car 3 is lifted by a chain block or the like (not shown) with the upper beam 1b as a suspension source.

  In any case, when the worker works on the upper part of the car 3, the worker who releases the brake of the inter-story drive motor 7 and the worker who rides on the upper part of the car 3 are positioned where the other worker is located. Since it cannot be confirmed, the work must be carried out while confirming only the shout, resulting in very poor work efficiency.

  In addition, when lifting the cars 2 and 3 with a chain block or the like, it takes time to prepare for the work, and when lifting, the worker must work on the upper part of the cars 2 and 3 to which the operator moves. The scaffold becomes unstable and the workability is poor.

  Further, since the amount of movement of the cars 2 and 3 cannot be confirmed by manually rotating the intermediate connecting portion 8c or lifting the cars 2 and 3 with a chain block or the like, the level of the floors of the cars 2 and 3 can be confirmed. It is difficult to carry out work and the like.

  The present invention has been made in consideration of the above points, and an object of the present invention is to provide a double-deck elevator that can perform manual floor adjustment more safely.

  Moreover, the objective of this invention is providing the double deck elevator which implements a floor adjustment operation | work simply and efficiently.

  (1) In order to solve the above problems, a double deck elevator according to the present invention includes a floor adjustment mechanism that adjusts the distance between an upper car and a lower car that are arranged vertically in a car frame. A double-deck elevator, a driven member attached to the rotational drive system of the upper part of the car frame upper part of the floor adjustment mechanism, and joined to the driven member so as to be movable forward and backward, and rotated by a manual rotation operation. Manual driving force transmission means for transmitting driving force to the driven member is provided.

  With this configuration, when the rotational driving force is generated from the manual driving force transmission means under the manual rotation operation by the hand, the rotational driving force is transferred to the floor adjustment mechanism via the driven member. Therefore, it is possible for the operator to adjust the distance between the upper car and the lower car by performing manual rotation operation at the upper part of the car frame. In addition, since it is a manual operation only at the upper part of the car frame, it is possible to easily and efficiently proceed with the work.

  In addition, if a reduction mechanism is provided in the transmission path for transmitting the rotational driving force by the manual rotation operation, it is possible to vary the movement amount of the floor adjustment mechanism with a small human driving force.

  Also, if the rotary drive system located above the driven member mounting position of the inter-story adjustment mechanism is calibrated, the amount of movement due to the rotation of the rotary drive system can be visually checked, and the work can proceed smoothly. In addition, it is possible to accurately adjust the car position and the distance between the two cars by the horizontal installation work of each car.

  Furthermore, instead of the manual driving force transmission means, an electric driving force transmission means using a drive motor may be provided.

  (2) The double-deck elevator according to the present invention is installed on the upper part of the car frame, and is a double-shaft type drive motor that rotationally drives the rotary drive system of the floor adjustment mechanism, and one rotary shaft of this floor drive motor And a detachable handle that is attached to the other rotary shaft on the opposite side of the rotary drive system connected to the rotary drive system and that transmits the rotary drive force generated by the manual rotation operation to the rotary drive system.

  In the present invention, if the structure as described above is used, the rotational drive system of the floor adjustment mechanism is connected to one rotary shaft of the floor drive motor and the handle is attached to the other rotary shaft. It is possible to adjust the car position and the distance between the two cars with high accuracy by adopting a simple structure.

  According to the present invention, it is possible to adjust the floor between the upper car and the lower car at the upper part of the car frame, and therefore, the manual floor adjustment can be performed safely.

  Further, the present invention eliminates the work of lifting the car with a chain block or the like, and can easily perform the floor adjustment work.

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

  FIG. 1 is a block diagram showing an embodiment of a double deck elevator according to the present invention. In the figure, the same or equivalent parts as in FIG. 5 are denoted by the same reference numerals, and the detailed description thereof will be given in the description of FIG.

  This double deck elevator has an upper car 1b between the upper beam 1b and the intermediate beam 1c on the upper side of the car frame 1, and an intermediate beam 1c and lower beam 1d on the lower side of the car frame 1 as in the prior art. A lower car 3 is arranged between them, and the car frame 4 and the cars 2, 3 constitute a car unit 4. As an example of the car frame 1, as in FIG. 5, the car frame 1 is composed of a pair of left and right vertical frames 1a, 1a, an upper beam 1b, an intermediate beam 1c, and a lower beam 1d. A pair of left and right floor drive motors 7 installed at the top of 1b, a ball screw 8 attached to the rotary shaft of these floor drive motors 7 and extending downward in the car frame 1, and a car 2 at the top. A ball screw nut 9 that is screwed with the upper section of the ball screw 8 and a ball screw nut 10 that is provided at the upper portion of the lower car 3 and screwed with the lower section of the ball screw 8 are provided.

  In this double deck elevator, as shown in FIG. 2, a manual adjustment mechanism 30 as a manual driving force transmission means is provided in the vicinity of each floor adjustment mechanism 6 installed on the upper beam 1b constituting the car unit 4, as shown in FIG. It is in having established.

  As shown in FIG. 2, the manual adjustment mechanism 30 has a first bevel gear 31 (a driven member) attached to a ball screw 8 serving as a rotational drive system of the floor adjustment mechanism 6 above the upper beam 1b. A second bevel gear 32 is installed so as to mesh with the first bevel gear 31.

  The second bevel gear 32 is fixed to one end of a shaft body 35 that is pivotally supported by support members 33 and 34 erected on the upper beam 1b, and is removable on the other end side of the shaft body 35. A handle 36 is attached. The shaft body 35 that transmits the rotational driving force generated by the rotational operation of the handle 36 is provided with a gear box 37 as a reducing mechanism for changing the movement amount of the floor adjustment mechanism 6 so as to decrease.

  Note that the second bevel gear 32 is configured to move forward and backward in the axial center direction of the shaft body 35 via the support members 33 and 34 by manual rotation operation of the handle 36. The bevel gear 32 is set at a retracted position where it does not mesh with the first bevel gear 31.

  In addition, a scale 38 is provided for visually recognizing the amount of movement of the ball screw 8 along the circumference of the ball screw 8 located near the upper end of the ball screw 8, that is, above the first bevel gear 31. Has been. Furthermore, a brake release device 21 for releasing the brake of the floor drive motor 7 is provided.

  Next, the adjustment between steps of the manual adjustment mechanism 30 will be described.

  The manual adjustment of the manual adjustment mechanism 30 is performed by adjusting the level of the cars 2 and 3 at the time of installation, and the floor adjustment caused by the abnormality in the floor adjustment mechanism 6 and the control device 12 during the elevator operation. Examples of the adjustment between the floors when the maximum or minimum of the normal floor length is excessive due to an abnormality in the floor of the adjustment mechanism 6 will be described. Here, the latter floor adjustment will be described.

  When the maximum or minimum normal floor length is exceeded, the operation limit switch 13 or 14 is turned off, and the cars 2 and 3 are stopped to function as a safety device.

  In such a stopped state of the car, it is necessary to manually return the elevator.

  Therefore, in the double deck elevator, when the brake release device 21 is not connected, the brake release device 21 is connected to the floor drive motor 7 and the reduction ratio of the gear box 37 is selected according to the work situation, The handle 36 is rotated to mesh the second bevel gear 32 with the first bevel gear 31.

  Subsequently, the brake of the inter-story drive motor 7 is released using the brake release device 21, the handle 36 is rotated, and the rotation transmission force is transmitted between the second bevel gear 32 and the first bevel gear 31. This is transmitted to a ball screw 8 which is a rotational drive system constituting the adjusting mechanism 6. As a result, the cars 2 and 3 are moved by the rotation of the ball screw 8, and the amount of movement of the floor adjustment mechanism 6 at this time can be grasped from the scale 38. That is, the amount of movement of the floor adjustment mechanism 6 is measured from the scale 38 while rotating the handle 36, and the operation of the handle 36 is terminated when the predetermined amount of movement is reached. Thereafter, the brake release of the floor drive motor 7 is released, the brake release device 21 is removed from the floor drive motor 7, and the second bevel gear 32 that meshes with the first bevel gear 31 is moved backward to move the first wheel The engagement between the bevel gear 31 and the second bevel gear 32 is disengaged, and the interstory adjustment work is completed.

  Therefore, according to the embodiment as described above, for example, when a horizontal centering operation of the car 2 is performed, an operator enters between the car 2 and the car 3 and manually rotates the intermediate connecting portion 8c. Since the work is eliminated and the horizontal centering work can be performed simply by turning the handle 36 on the work table 17, the work scaffold becomes stable and the work can be carried out efficiently.

  Further, in the restoration work of the elevator when the cars 2 and 3 have exceeded the maximum or minimum of the normal floor length due to the abnormality of the floor adjustment mechanism 6, the worker and the floor releasing the brake of the floor driving motor 7 are used. Since the operator who manually operates the space adjusting mechanism 6 is on the upper beam 1b, the work can be safely proceeded while cooperating with each other.

  Further, in the restoration work of the elevator when the cars 2 and 3 have exceeded the normal maximum of the floor length due to an abnormality in the floor adjustment control device 12 or the like, the worker is between the car 2 and the car 3. There is no need to enter and manually rotate the intermediate connecting portion 8c, and the operator can perform the horizontal centering operation simply by turning the handle 36 from the workbench 17, so that the work platform becomes stable and the work can be carried out efficiently. it can.

  In addition, since the meshing between the first bevel gear 31 and the second bevel gear 32 is disconnected after the work is completed, the system can be operated silently without a problem of meshing noise during normal operation of the elevator. Further, by attaching the gear box 37 to the shaft body 35 that supports the second bevel gear 32, the amount of movement of the handle 36 per unit rotation becomes variable, and consequently the movement of the floor adjustment mechanism 6 according to the work contents. The amount can be changed, and work can be carried out efficiently with little effort.

  Further, if the handle 36 is rotated in the forward and reverse directions, the floor adjustment mechanism 6 can be adjusted between the expansion side and the contraction side, flexibly responding to the work situation, and a scale 38 near the upper end of the ball screw 8. Therefore, the amount of movement of the ball screw 8 can be confirmed from the indication of the scale 38, which contributes to improvement of work safety and work accuracy.

  In the above embodiment, the handle 36 is provided on the inner side of the inter-story adjustment mechanism 6, but may be provided on the front, rear, or the outer side of the inter-story adjustment mechanism 6, for example. In addition, a handle 36 including individual shaft bodies 35 is provided corresponding to the left and right floor adjustment mechanisms 6. However, these two floor adjustment mechanisms 6 can be operated at the same time and can be separated as necessary. A mechanism may be provided.

(Other embodiments)
FIG. 3 is a view for explaining another embodiment of the double deck elevator according to the present invention. In the figure, the same or equivalent parts as in FIG. 2 are denoted by the same reference numerals, and the detailed description thereof will be given in the description of FIG.

  In this embodiment, instead of providing a removable handle 36 at the end of the shaft body 35, a motor 41 is attached, and a switch 42 that can be changed in the forward / reverse rotation direction is connected to the motor 41.

  According to such a configuration, after the operator sets the gearbox 37 to a required reduction ratio, the switch 42 is switched to rotate in a predetermined rotation direction, and the brake release device 21 is used to drive the floor. If the brake of the motor 7 is released and electric power is supplied to the motor 41, the rotational driving force of the motor 41 is transmitted to the first bevel gear 31 via the shaft body 35 and the second bevel gear 32. The ball screw 8 constituting the space adjusting mechanism 6 rotates, and the space adjustment can be performed.

  Also in this embodiment, since the scale 38 is provided near the upper end of the ball screw 8, the amount of movement of the ball screw 8 can be confirmed from the indication of the scale 38, and the safety and accuracy of work can be confirmed. Contribute to improvement.

  FIG. 4 is a view for explaining still another embodiment of the double deck elevator according to the present invention. In the figure, the same or equivalent parts as in FIG. 2 are denoted by the same reference numerals, and the detailed description thereof will be given in the description of FIG.

  In this embodiment, when a double-shaft type floor drive motor 7 is used, the ball screw 8 of the floor adjustment mechanism 6 is connected to one rotary shaft of the floor drive motor 7. The rotating shaft is provided with a manual adjustment mechanism as manual driving force transmission means, that is, a handle 36 is removably attached to the end of the shaft body 35 connected to the other rotating shaft, and a gear box 37 is attached to the shaft body 35. It is set as the structure which mounts. Further, a scale 38 that can visually recognize the amount of movement of the ball screw 8 along the circumference of the other rotary shaft of the inter-story drive motor 7 is provided. Furthermore, a brake release device 21 for releasing the brake of the floor drive motor 7 is provided.

  Therefore, according to such an embodiment, the support members 33 and 34, the first bevel gear 31 and the second bevel gear 32 are not necessary, and the floor adjustment can be performed with a very simple configuration. it can.

  Note that a manual adjustment mechanism that always excludes the handle 36 may be provided on the other rotary shaft of the floor drive motor 7, but a manual adjustment mechanism is attached to the other rotary shaft during centering work during installation or floor adjustment work. Needless to say, this can be easily realized.

  In addition, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

  In addition, the embodiments can be implemented in combination as much as possible, and in that case, the effect of the combination can be obtained. Further, each of the above embodiments includes various higher-level and lower-level inventions, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, when an invention is extracted because some constituent elements can be omitted from all the constituent elements described in the means for solving the problem, the omitted part is used when the extracted invention is implemented. Is appropriately supplemented by well-known conventional techniques.

The block diagram which shows one Embodiment of the double deck elevator which concerns on this invention. The figure explaining the structural example of the principal part of the double deck elevator which concerns on this invention. The figure explaining the structural example of the other principal part of the double deck elevator which concerns on this invention. The figure explaining the structural example of the other principal part of the double deck elevator which concerns on this invention. The block diagram of the conventional double deck elevator. The figure explaining the state at the time of car installation. The figure explaining the return | restoration of an elevator when a cage | basket | car passes the maximum or minimum of the normal floor-to-floor length by the abnormal operation | movement of a floor-level adjustment mechanism.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Car frame, 2, 3 ... Car, 4 ... Car unit, 6 ... Interfloor adjustment mechanism, 7 ... Interfloor drive motor, 8 ... Ball screw, 9, 10 ... Ball screw nut, 13, 14 ... Operation limit Limit switch, 17, 18 ... work table, 21 ... brake release device, 30 ... manual adjustment mechanism, 31 ... first bevel gear, 32 ... second bevel gear, 35 ... shaft, 36 ... handle, 37 ... gear Box, 38, scale, 41, motor, 42, rotating direction switch,

Claims (7)

In a double deck elevator equipped with a floor adjustment mechanism that adjusts the distance between the upper car and the lower car that are arranged above and below the car frame,
A driven member attached to a rotational drive system of the car frame upper part of the floor adjustment mechanism;
Manual driving force transmission means that is joined to the driven member so as to freely advance and retract, and that transmits a rotational driving force by a manual rotation operation to the driven member;
A double-deck elevator characterized in that a rotational driving force by the manual rotation operation is transmitted to a rotational driving system of the floor adjustment mechanism, and a distance between the upper car and the lower car can be adjusted. The driven member is a first bevel gear that rotates integrally with a rotational drive system of the floor adjustment mechanism,
The manual driving force transmitting means includes a second bevel gear that meshes with the first bevel gear so as to freely advance and retreat, a shaft body that fixes the second bevel gear to one end portion, and a second end portion of the shaft body. The double deck elevator according to claim 1, further comprising a handle that is detachably attached and generates a rotational driving force by the manual rotation operation. In a double deck elevator equipped with a floor adjustment mechanism that adjusts the distance between the upper car and the lower car that are arranged above and below the car frame,
A driven member attached to a rotational drive system of the car frame upper part of the floor adjustment mechanism;
Electric driving force transmission means that is joined to the driven member so as to be able to advance and retract, and that transmits rotational driving force to the driven member
Rotation direction switching means for switching the forward and reverse rotation direction by the electric driving force transmission means,
A double deck elevator characterized in that a rotational driving force by the electric driving force transmitting means is transmitted to a rotational driving system of the floor adjustment mechanism, and a distance between the upper car and the lower car is adjustable. . The driven member is a first bevel gear that rotates integrally with a rotational drive system of the floor adjustment mechanism,
The electric driving force transmitting means includes a second bevel gear that meshes with the first bevel gear so as to freely advance and retreat, a shaft body that fixes the second bevel gear to one end portion, and a second end portion of the shaft body. The double deck elevator according to claim 3, further comprising a drive motor that is attached and generates the rotational driving force.   It is provided in a transmission path for transmitting the rotational driving force due to the manual rotation operation, and further includes a reduction mechanism that reduces the rotational driving force, and by changing the reduction ratio of the reduction mechanism, the movement of the floor adjustment mechanism The double deck elevator according to any one of claims 1 to 4, wherein the amount is variable.   The scale further comprising a scale provided on a rotary drive system located in the vicinity of the mounting position of the driven member of the inter-story adjustment mechanism so that the amount of movement due to the rotation of the rotary drive system can be seen. The double deck elevator according to any one of claims 1 to 5. In a double deck elevator equipped with a floor adjustment mechanism that adjusts the distance between the upper car and the lower car that are arranged above and below the car frame,
A double shaft type floor drive motor that is installed on the upper part of the car frame and rotationally drives the rotational drive system of the floor adjustment mechanism;
A removable handle that is attached to the other rotary shaft opposite to the rotary drive system connected to one rotary shaft of the inter-story drive motor, and that transmits the rotary drive force by the manual rotation operation to the rotary drive system. A double deck elevator characterized by the provision.

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