JP2008110838A - Lifting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lifting device capable of reducing the depth of a hoistway 51. <P>SOLUTION: A car 100 is provided with: an outer frame 110 lifted and driven by a driving means 8; an inner frame 120 arranged movably in the vertical direction Z with respect to the outer frame 110; and a moving means 20 moving the inner frame 120 between a standard position preset with respect to the outer frame 110, and a lower position being a lower side Z2 relative to the lowest end of the outer frame 110 and set on the lower side Z2 relative to the standard position; and a control means 150 controlling the driving means 8 and the moving means 20. The control means 150 is used for arranging the inner frame 120 at the lower position by the moving means 20 after stopping the car 100 to position the lowest end surface of the car 100 at a position on the upper side Z1 by a distance d1 for a lower clearance relative to the bottom surface 57 of the hoistway 51 when the car 100 is arranged on a lower end floor by the driving means 8. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a lifting device that lifts and lowers a hoistway in a state where a vehicle is mounted, and particularly relates to a lifting device dedicated to small packages.

  FIG. 8 is a cross-sectional view schematically showing a conventional lifting device. The lifting device includes a car 1 on which a vehicle is mounted, a hoisting machine 3 having a sheave for driving the car 1 up and down, and a leash provided at the hoisting machine 3 with one end attached to the car 1. It has a wire 2 that is wound around the vehicle in a slidable manner, a counterweight 201 that is attached to the other end of the wire 2, and a deflection vehicle 200 that stretches the wire 2 between the hoisting machine 3 and the counterweight 201. . The hoisting machine 3 drives the car 1 up and down by winding the wire 2. Even if the car 1 goes slightly below the floor surface of the floor closest to the bottom surface 4 forming the hoistway (hereinafter referred to as the lower floor), the bottom surface 4 forming the hoistway and the lowermost surface 5 of the car 1 Therefore, a space called a pit P is required in the lowermost region of the hoistway. When the car 1 is arranged on the lower floor, the pit P is a predetermined distance d1 (hereinafter referred to as the lower part) for the lower clearance between the lowermost surface 5 of the car 1 and the bottom surface 4 facing from below the hoistway. (Referred to as clearance distance d1). By ensuring the lower clearance distance d1, it is possible to prevent a collision between the bottom surface 4 facing the lower side of the hoistway and the lowest end surface 5 of the car 1.

  For example, in the case of a small baggage lifting device, when the car 1 reaches the lower floor, a lower clearance of 50 mm or more in the vertical direction between the bottom surface 4 facing from the lower side of the hoistway and the lowermost surface 5 of the car 1. A working distance d1 is set. The size of the lower clearance distance d1 is defined by laws and regulations relating to the Building Standard Law, and in the case of a passenger lifting device, it is determined by the rated speed of the lifting device.

  In order to secure the lower clearance distance d1, it is necessary to dig down the pit P and arrange the bottom surface 4 facing the lower side of the hoistway sufficiently below the floor surface 6 of the lower floor. When the lower floor is located on an intermediate floor other than the lowest floor of the building, that is, when the hoistway extends upward from the intermediate floor of the building, the pit P is formed more than the floor of the intermediate floor serving as the lower floor. Need to dig deeper. As a result, there is a problem that the space between the floor below the intermediate floor and the intermediate floor is wasted. In addition, due to the problem of building restrictions, the pit P cannot be dug until the lower clearance distance d1 is secured, and as a result, the lifting device 1 may not be installed.

  In patent document 1, in order to eliminate the level | step difference between the partition plate upper surface in a cage | basket | car, and an entrance / exit, the raising / lowering apparatus which provides the operation part which drives a winding machine at low speed in the entrance / exit vicinity, and performs level adjustment is disclosed. ing. Even with such a technique, it is necessary to dig up the pits P in order to secure the lower clearance distance d1, and the above-described problems cannot be solved.

Japanese Patent Laid-Open No. 11-60083

  An object of the present invention is to provide an elevating device that can make a pit shallower while ensuring a lower clearance distance d1.

The present invention is an elevating apparatus including a car that is provided so as to be able to move up and down in a building that extends vertically in a building, a driving means that drives the car up and down, and a control means that controls the driving means. There,
The car is a base that is driven up and down by the drive means;
A mounting portion that is provided so as to be movable in the vertical direction with respect to the base portion and has a mounting surface on which a vehicle can be mounted;
The mounting portion is moved over a standard position set in advance with respect to the base portion and a lower position that is lower than the lower end portion of the base portion and set below the standard position. Moving means,
The control means controls the driving means in a state in which the mounting portion is arranged at the standard position when the car is arranged on the lower floor closest to the bottom surface facing the lower side of the hoistway, and the car is controlled. The car is placed at a position above the floor surface of the lower floor and at a position above the bottom surface facing the lower side of the hoistway by a predetermined distance d1. After being stopped, the moving means is controlled to place the mounting portion at the lower position.

  Further, the present invention is characterized in that a car moves up and down on a hoistway in which the lower floor is set to a floor other than the lowest floor of the building.

  The present invention is also a lifting device dedicated to small packages, wherein the predetermined distance d1 is 50 mm or more.

Further, the present invention is a frame-like body in which the base portion is formed with an internal space that opens downward, and the mounting portion can be accommodated in the internal space,
A ceiling portion disposed above the mounting portion and connected to the driving means;
A plurality of vertical frame portions are connected to the ceiling portion and extend downward from the ceiling portion to guide the mounting portion.

In the present invention, the moving means includes a cable body having one end connected to the base,
The hoist is fixed to the upper surface of the ceiling portion of the base and includes a hoist capable of winding the rope by connecting the other end of the rope.

  Further, in the present invention, the lower position is located at a position above the bottom surface where the lowermost end surface of the car faces from the lower side of the hoistway by a predetermined distance d1. In a state where the car is stopped, it is set at a position moved downward from the standard position by a set distance H1 corresponding to the step distance H2 between the mounting surface of the mounting portion and the floor surface of the lower floor. It is characterized by.

The present invention further includes base position detection means for detecting the position of the base relative to the building,
The control means controls the drive means in response to an output signal from the base position detection means, whereby the lowest end surface of the car is a predetermined distance d1 from the bottom surface facing the lower side of the hoistway. The car is stopped so as to be disposed at a position above only.

Further, the present invention further includes a mounting part position detecting means for detecting the position of the mounting part with respect to the building,
In response to the output signal from the mounting portion position detecting means, the control means determines that the mounting portion located near the lower floor has reached the standard position and the lower position, and drives the moving means. It is characterized by stopping.

  According to the present invention, when the car is arranged on the lower floor, the control means controls the drive means so that the lowermost clearance surface d1 is higher than the bottom face facing the lowermost face of the car from below the hoistway. Position the car and stop the car. Next, the control means controls the moving means to move the mounting portion downward relative to the base, and causes the mounting portion to protrude downward from the base.

  The car stops at the position above the bottom surface facing the lower side of the hoistway at the lowermost end surface, so that the bottom surface facing the lower side of the hoistway is set unnecessarily below the bottom surface facing the lower side of the hoistway. A sufficient distance for lower clearance can be ensured between the lowermost end surface of the cage and the car. Further, after the driving means is stopped, the mounting portion is moved downward with respect to the base by the moving means, so that the mounting surface of the mounting portion can be brought close to the floor surface of the lower floor. The level | step difference between a mounting surface and the floor surface of a lower end floor can be reduced. For example, the lower clearance distance d1 is set according to the specifications of the lifting device such as the mounting object and the mounting ability.

  In this way, after securing the distance for the lower clearance, the depth between the bottom surface facing the lower side of the hoistway and the floor surface of the lower floor can be reduced, in other words, the space for the pit can be saved. This can reduce the labor for forming the hoistway. In addition, by saving space in the pits, it is possible to increase the number of buildings where lifting devices can be installed.

  Moreover, according to this invention, a cage | basket | car raises / lowers the hoistway set to the intermediate | middle floor where a lower end floor becomes other than the lowest floor of a building. If the middle floor is set as the lower floor of the hoistway, there is a floor below the middle floor in the building, so secure an area between the floor of the middle floor and the ceiling of the floor below the middle floor In order to do so, the bottom face facing the lower floor of the hoistway may not be dug deeply with respect to the floor surface of the intermediate floor. As described above, in the present invention, it is possible to reduce the depth between the bottom surface facing the lower side of the hoistway and the floor surface of the lower floor while securing the distance for the lower clearance. Even so, it is not necessary to dig deeper into the bottom faced from below the hoistway formed on the intermediate floor. As a result, the influence on the lower floor relative to the intermediate floor can be reduced with respect to the formation of the hoistway.

  For example, the vertical distance between the floor surface of the intermediate floor and the ceiling surface of the lower floor relative to the intermediate floor is small, the lower clearance distance d1 from the floor surface of the intermediate floor, and the bottom surface facing the lower side of the hoistway downward It may be difficult to dig down. In the present invention, since the base is stopped sufficiently above the floor surface of the intermediate floor by the driving means, it is not necessary to dig down the bottom surface facing the lower floor of the hoistway from the floor surface of the intermediate floor, and the elevator The restrictions for applying the device can be reduced, and the number of buildings where the lifting device can be installed can be increased.

  Further, according to the present invention, when the lower clearance distance d1 is set to 50 mm or more, in the case of a lifting device dedicated for small parcels, the lower end surface of the car and the lower side of the hoistway when the driving means stops driving. A collision with the bottom surface can be prevented more reliably.

  Moreover, according to this invention, the internal space of a base is open | released below, and a mounting part can be accommodated in an internal space. Therefore, the riding part can shift from the arrangement state accommodated in the internal space of the base part to the arrangement state in which at least the lower end portion protrudes downward from the base part. Moreover, a base part is formed in a frame-shaped body and an intensity | strength can be improved by guiding a mounting part by several vertical frame parts. Furthermore, by connecting the ceiling portion to the driving means, the base can be raised and lowered more stably than when the vertical frame portion is connected to the driving means.

  Moreover, according to this invention, a mounting part can be closely approached toward the ceiling part of a base by winding up a rope body with a winding machine. Further, by relaxing the winding force of the cable body, the mounting portion can be separated downward from the ceiling portion of the base portion by its own weight. By using the hoisting machine and the cable body in this way, the riding part can be raised and lowered with respect to the base part. In addition, by winding the rope body with a hoisting machine, it is possible to prevent the moving means from becoming large even if the movable distance of the mounting portion relative to the base portion becomes long.

  According to the present invention, in the case where the driving means is stopped when arranged on the lower floor, the mounting surface of the mounting section and the floor surface of the lower floor are separated by a predetermined step distance H2. It is arranged with a gap. In this state, the mounting portion is moved downward by a set distance H1 corresponding to the step distance H2 and stopped with respect to the base, so that the vertical position of the mounting surface and the floor surface of the lower floor is made to coincide. It is possible to eliminate the step. That is, accurate level alignment can be performed.

  According to the present invention, the timing for stopping the driving of the driving means is determined by the output signal from the base position detecting means. Thereby, the control means can easily determine the drive stop timing of the drive means. Further, by following the detection result of the base position detection means, the lowest end surface of the car can be accurately positioned at a position above the bottom surface facing the lower side of the hoistway by a lower clearance distance d1.

  According to the present invention, the timing for stopping the driving of the moving means is determined by the output signal from the mounting portion position detecting means. Thereby, the control means can easily determine the drive stop timing of the moving means. Further, according to the detection result of the mounting portion position detecting means, the mounting portion can be positioned with high accuracy, and the level of the mounting surface and the floor surface of the lower floor can be made coincident with each other so that no step is generated.

  FIG. 1 is a front view schematically showing a lifting device 50 according to an embodiment of the present invention. A lifting device 50 according to an embodiment of the present invention is a lifting device for small packages, and lifts and lowers a vehicle. The elevating device 50 is configured to include a car 100 on which a vehicle is mounted so that the hoistway 51 can be raised and lowered, and driving means 8 that drives the car 100 to move up and down. The car 100 includes an outer frame 110 and an inner frame 120. The inner frame 120 is configured to be slidable in the vertical direction Z with respect to the outer frame 110.

  The hoistway 51 is formed in a substantially quadrangular columnar space, and is formed to extend in the vertical direction Z in the building. The building 54 is formed with a plurality of floors, and the floor closest to the bottom surface 57 facing from the lower side of the hoistway is referred to as a lower floor. The lower floor is not limited to the first floor of the building 54 but may be an underground floor or an intermediate floor. In addition, the floor surface of the lower floor means the floor surface of the loading / unloading port. Therefore, in the case where the floor surface of the baggage entrance / exit is located above the bottom surface of the lower floor as in the table type small baggage lifting device, the floor surface of the baggage entrance / exit is the floor surface of the lower floor. Means.

  Further, the hoistway 51 may be formed to extend upward from the floor other than the lowest floor of the building 54 to the upper Z1. For example, the hoistway 51 may be formed extending from the second floor to the upper Z1. In this case, the lower floor corresponding to the hoistway 51 is the second floor. The lifting device 50 is configured to be able to lift and lower the car 100 across the lower floor and the floor Z1 above the lower floor.

  The driving means 8 has a first hoisting machine 53 having a sheave for driving the car 100 to move up and down, and one end attached to the car 100, and hangs around the sheave provided in the first hoisting machine 53. The first rope body 52 is stretched between the first rope body 52, the counterweight 204 attached to the other end of the first rope body 52, and the first hoisting machine 53 and the counterweight 204. And a deflecting wheel 203. The first hoisting machine 53 is fixed to the building 54 at a position above the hoistway 51. The first strip body 52 is realized by a material having flexibility and a small amount of extension with respect to a pulling force. The raising / lowering method of the car 100 by the driving means 8 may be a traction drive type or a winding drum type.

  In the present embodiment, a traction drive type is adopted as the raising / lowering method of the car 100. One end 55 of the first rope body 52 is fixed to the car 100 and the other end is fixed to the counterweight. The first rope body 52 is wound around the sheave of the first hoisting machine 53 at an intermediate position. The first hoisting machine 53 rotates the sheave in one circumferential direction around the axis, thereby increasing the portion of the first rope body 52 between the sheave and the counterweight and raising the car 100. Further, the first hoisting machine 53 rotates the sheave to the other circumferential direction around the axis, thereby increasing the portion of the first rope body 52 between the sheave and the car and lowering the car 100.

  FIG. 2 is an exploded perspective view showing the car 100. The car 100 includes an outer frame 110 and an inner frame 120. The outer frame 110 serves as a base that is driven up and down by the driving means 8. Further, the inner frame 120 is provided so as to be slidable in the vertical direction Z with respect to the outer frame 110, and serves as a mounting portion having a mounting surface 120a on which a vehicle can be mounted. The drive means 8 is a means for driving the car 100 up and down across a plurality of floors.

  The outer frame 110 is a frame-like body formed in a frame shape, and includes a ceiling portion 111 and a plurality of vertical frame portions 112. The ceiling portion 111 is generally formed in a square plate shape, and its thickness direction extends in the vertical direction Z. The ceiling portion 111 has a sufficient thickness dimension to realize a strength capable of supporting the entire car. The vertical frame portions 112 are formed in a bar shape and are respectively connected to the ceiling portion 111. The vertical frame portion 112 extends in the vertical direction from the ceiling portion 111 toward the lower side Z2. Specifically, the vertical frame portion 112 is connected to the four corner positions of the ceiling portion 111.

  The outer frame 110 forms an outer frame internal space 60. The outer frame internal space 60 is located below the ceiling portion 111 in the lower Z2 and is adjacent to each vertical frame portion 112 in the horizontal direction. The outer frame internal space 60 is generally a horizontal virtual plane including four planes that vertically surround the ceiling portion 111 in the horizontal direction, the bottom surface of the ceiling portion 111, and the bottom surface of the vertical frame portion 112. It is a substantially cubic space surrounded by.

  The outer frame 110 is formed with a lower through-hole 62 that communicates the outer frame inner space 60 and the outer space adjacent to the lower Z2 with respect to the outer frame inner space 60. Therefore, the outer frame internal space 60 is opened to the lower side Z2. Further, the outer frame 110 is formed with an outer frame entrance / exit 61 that communicates the outer frame internal space 60 and an external space adjacent to the outer frame internal space 60 in the vehicle loading direction X. Here, the vehicle carrying-out direction X is one of the horizontal directions orthogonal to the up-down direction Z, and when the car 100 is configured as the car 100, the car loaded in the car 100 is It is the direction to be carried out from the inside of the car. Therefore, the outer frame internal space 60 is opened in the vehicle loading direction X. In another embodiment of the present invention, the vehicle carrying-out direction X may be two directions perpendicular to the vertical direction Z in the horizontal direction, and the two directions are orthogonal directions. Alternatively, the directions may be away from each other. The outer frame doorway 61 is an opening through which a vehicle can enter and exit the car 100.

  The outer frame internal space 60 is a storage space in which the inner frame 120 can be stored. The vertical frame portion 112 serves as a guide portion that guides the inner frame 120 in the vertical direction Z. Further, a corner portion of the inner frame 120 that contacts the vertical frame portion 112 becomes a guide portion that is guided by the vertical frame portion 112. In the present embodiment, the vertical frame portion 112 has a guide portion continuously formed from the upper end portion 112a to the lower end portion 112b. The vertical frame portion 112 has an L-shaped cross section perpendicular to the vertical direction. The vertical frame portion 112 is formed with a first guide portion 70 extending in the up-down direction Z and a second guide portion 71 extending in the up-down direction and bent at right angles to the end portion of the first guide portion 70. Both the first guide portion 70 and the second guide portion 71 of the vertical frame portion 112 face the outer frame internal space 60.

  The inner frame 120 is formed in a bottomed box shape, and an inner frame inner space 80 that opens in the vehicle loading direction X is formed. The inner frame 120 includes a bottom wall portion 81, side wall portions 82, 83, 84, and an upper wall portion 85. In addition, the inner frame 120 is formed with an inner frame entrance / exit 86 that communicates the inner frame inner space 80 with an outer space adjacent to the inner frame inner space 80 in the vehicle loading direction X.

  Each of the wall portions 81 to 85 of the inner frame 120 is formed in a substantially square plate shape and serves as a wall that defines the inner frame internal space 80. The bottom wall portion 81 and the upper wall portion 85 are arranged at intervals in the vertical direction Z, and are connected to each other by the side wall portions 82 to 84. Three side wall portions 82 to 84 are provided. Each of the side wall portions 82 to 84 extends from the edge portion of the bottom wall portion 81 to the edge portion of the upper wall portion 85 and surrounds the inner frame internal space 80 of the inner frame 120 in the horizontal direction. The bottom wall portion 81 is formed with a mounting surface 120a on which a vehicle is mounted. The bottom surface of the bottom wall portion 81 is the lowermost end surface 120 b of the inner frame 120. The mounting surface 120a and the lowermost end surface 120b extend substantially horizontally. The inner frame internal space 80 is formed above the mounting surface 120a, and serves as a storage space for storing a vehicle.

  FIG. 3 is a perspective view showing the car 100 to which the outer frame 110 and the inner frame 120 are coupled. FIG. 3A shows a state where the lowermost end surface 120 b of the inner frame 120 is located at a standard position with respect to the outer frame 110. FIG. 3B shows a state where the lowermost end surface 120 b of the inner frame 120 is located at a lower position with respect to the outer frame 110.

  The size of the outer shape of the inner frame 120 and the outer frame inner space 60 are formed to be approximately the same size. When the inner frame 120 is fitted to the outer frame 110 from below, the car 100 is assembled. The first guide portion 70 and the second guide portion 71 of the vertical frame portion 112 face corner portions of the side wall portions 82 to 84 of the inner frame 120. Thus, when an external force in the horizontal direction is applied to the inner frame 120, the corner portions of the side walls 82 to 84 are guided to the vertical frame portion 112, and the inner frame 120 is horizontal with respect to the outer frame 110. Can be prevented from being excessively shifted.

  As shown in FIG. 3A, in the standard state where the inner frame 120 is located at the standard position, the entire inner frame 120 is accommodated in the outer frame internal space 60. Further, as shown in FIG. 3B, in the lower state where the inner frame 120 is positioned at the lower position, a part of the inner frame 120 protrudes downward Z2 from the outer frame internal space 60 of the outer frame 110. As described above, since the outer frame inner space 60 opens to the lower Z2, the inner frame 120 in the standard state slides to the lower Z2, so that it does not interfere with the outer frame 110, and is moved downward from the standard state. It can be switched to the state. In addition, since the outer frame 110 and the inner frame 120 are formed with the entrances 61 and 86 in the vehicle carrying-out direction X with respect to the internal spaces 60 and 80, the outer frame 110 is in a lower state without interference. Also, the vehicle stored in the inner frame internal space 80 can be carried in and out.

  As shown in FIG. 3A, in the standard state in which the lowermost end surface 120b of the inner frame 120 is located at the standard position, the vertical position between the bottom wall portion 81 of the inner frame 120 and the lower end portion 112b of the outer frame 110. Is almost the same. In the standard state, the lowermost end surface of the car 100 is the lower end surface 112c of the vertical frame portion 112. Further, a slight gap H3 is formed between the upper wall portion 85 of the inner frame 120 and the ceiling portion 111 of the outer frame 110 in the vertical direction. Therefore, the standard position is a position where the lowermost end surface 120b of the inner frame 120 and the lower end surface 112c of the outer frame 110 are arranged on a substantially horizontal plane, and the inner frame 120 is possible on the ceiling portion 111 of the outer frame 110. Is set to the uppermost position close to each other. Thereby, the vertical dimension of the car 100 in the standard state can be configured compactly.

  As shown in FIG. 3B, in the lower state where the lowermost end surface 120b of the inner frame 120 is located at the lower position, the bottom wall portion 81 of the inner frame 120 is positioned below the lower Z2 than the lower end portion 112b of the outer frame 110. Protruding. The lower position is a position where the lowermost end surface 120b of the inner frame 120 is positioned below the lower end portion 112b of the outer frame 110 and is set below the standard position.

  In the downward state, the distance in the vertical direction Z between the lower end surface 112c of the outer frame 110 and the lowermost end surface 120b of the inner frame 120 is defined as a preset set distance H1. Even in the downward state, in order to prevent the inner frame 120 from being excessively displaced in the horizontal direction with respect to the outer frame 110, the distance H6 between the vertical frame portion 112 and the inner frame 120 is set to be sufficiently long.

  As described above, the inner frame 120 is disposed inside the outer frame 110 and is provided so as to be movable with respect to the outer frame 110 through the outer frame internal space 60. The inner frame 120 may be guided directly by the vertical frame portion 112 of the outer frame 110, but may be guided in the vertical direction with respect to the outer frame 110 via another guide member. For example, the inner frame 120 may be continuously guided to the vertical frame portion 112 of the outer frame 110 via a guide roller or a guide shoe. As a result, the inner frame 120 can be smoothly slid relative to the outer frame 110.

  The outer frame 110 only needs to be formed with an outer frame inner space 60, an outer frame entrance / exit 61, and a lower through-hole 62. Therefore, the outer frame 110 only needs to have the strength necessary for supporting the inner frame 120 and being driven up and down by the driving means 8, and with respect to the frame-like structure of the outer frame 110 of the present embodiment. You may form in the structure reinforced suitably. For example, the outer frame 110 may be formed with a side wall that covers three side surfaces of the four side surfaces facing the internal space 60 from the horizontal direction, excluding the vehicle loading direction X. Further, a reinforcing member that extends along three side surfaces excluding the vehicle carrying-out direction X and connects two adjacent vertical frame portions 112 may be formed. As a result, the strength of the outer frame 110 can be improved. In particular, even when the size of the car 100 is limited, such as a small luggage lifting device, the car 100 can be formed into a structure that is strong enough to drive up and down.

  As shown in FIG. 1, the lifting device 50 includes moving means 20 that drives the inner frame 120 up and down relative to the outer frame 110. The moving means 20 moves the inner frame 120 up and down over the standard position set with respect to the outer frame 110 and the lower position.

  In the present embodiment, the moving means 20 includes a second hoisting machine 21 for driving the inner frame 120 up and down, a second strip 24 connecting the inner frame 120 and the second hoisting machine 21, and a pulley. 22 and 23. The moving means 20 also serves as a support means for supporting the inner frame 120 from below with respect to the outer frame 110. The second hoisting machine 21 is provided separately from the first hoisting machine 53 and is realized including an electric motor and a sheave. A part of the outer peripheral portion of the sheave protrudes from the outer frame 110 in the left-right direction Y1. The second hoisting machine 21 is fixed to the upper surface of the ceiling portion 111 of the outer frame 110. The second hoisting machine 21 is disposed at an intermediate position of the inner frame 120 in the vehicle carry-out direction X and at the end of the outer frame 110 in the left-right direction Y1. Here, the left-right direction Y is a direction perpendicular to the up-down direction Z and the vehicle carrying-out direction X.

  At least two pulleys 22 and 23 are provided and include a first pulley 22 and a second pulley 23. The first pulley 22 is supported by the first side wall 82 that is one of the two side walls 82 and 84 of the inner frame 120 that face each other. The second pulley 23 is supported by the second side wall 84 that is the other of the two side walls 82 and 84 that face each other in the inner frame 120. The pulleys 22 and 23 are supported by the side wall portions 82 and 84 so as to be rotatable around the rotation axis. The rotation axes of the pulleys 22 and 23 extend in parallel to the vehicle loading direction X, respectively. The pulleys 22 and 23 are arranged at the intermediate position of the inner frame 120 in the vehicle carry-out direction X. The pulleys 22 and 23 partially protrude downward from the lowermost end surface 120 b of the inner frame 120.

  The second strip 24 is provided separately from the first strip 52. One end portion 90 of the second cable body 24 is fixed to the lower end surface of the ceiling portion 111 of the outer frame 110. Of the ceiling portion 111, the fixed portion 92 to which the second strip body 24 is fixed protrudes in the left and right direction other Y <b> 2 with respect to the inner frame 120. The other end 91 of the second rope body 24 is fixed to the outer peripheral portion of the sheave of the second hoisting machine 21.

  Further, the second strip 24 is guided by the first pulley 22 and the second pulley 23 at the intermediate portion between the one end portion 90 and the other end portion 91. The second ridge body 24 extends in a substantially U shape covering the inner frame 120 from the lower side Z2 with a space from the inner frame 120.

  Specifically, the second striatum 24 includes a first region 24a, a second region 24b, and a third region 24c. The first region 24a extends in the vertical direction Z while being spaced apart from the inner frame 120 in the other horizontal direction Y2. One end of the first region 24 a is fixed to the fixed portion 92 of the ceiling portion 111, and the other end is in contact with the outer peripheral surface of the first pulley 22.

  The second region 24b extends in the left-right direction Y while being spaced apart downward Z2 with respect to the inner frame 120. The second region 24 b has one end connected to the other end of the first region 24 a and the other end is in contact with the outer peripheral surface of the second pulley 23. The third region 24c extends in the up-down direction Z while being separated from the inner frame 120 in the left-right direction Y1. The third region 24c has one end connected to the other end of the second region 24b and the other end wound around the sheave. The 1st-3rd field 24a-24c to the 2nd striatum changes fluidly by change of the amount of angular displacement of a sheave.

  In the state where the second hoisting machine 21 prevents the sheave from rotating, the second rope body 24 is prevented from being fed out from the sheave. Further, the second ridge body 24 can keep the length from the sheave to the one end 90 constant. In this state, the second region 24b of the second ridge body 24 is substantially fixed to the outer frame 110, and can support the inner frame 120 from below Z2 via the pulleys 22 and 23.

  In addition, the second ridge body 24 is disposed so as to pass on a vertical line passing through the center of gravity of the inner frame 120 in a state where the mounted object is mounted. In the present embodiment, the second ridge body 24 passes through the center position of the inner frame 120 in the carry-out direction X. As a result, the second ridge body 24 can stably support the inner frame 120. Further, by providing a plurality of moving means 20, the inner frame 120 can be supported more stably. In this case, it is preferable that the second strips 24 of each moving unit 20 are arranged at equal intervals in the vehicle carrying-out direction X. The plurality of moving means 20 may also serve as the second hoisting machine 21.

  The second strip 24 is made of a material having a sufficient strength that does not break even when a shearing force corresponding to the combined weight of the inner frame 120 and the maximum loading weight that can be mounted on the car is applied. . The second strip body 24 is realized by a material having flexibility and a small amount of extension with respect to a pulling force. For example, the second strip body 24 is formed by bundling two or more wires that are linear bodies in which steel wires are brought together. In the present embodiment, since the lifting device 50 is dedicated to small parcels, the second strip 24 having sufficient strength is selected even when a vehicle of 100 kg or more and 500 kg or less is mounted on the car 100. The

  The second hoisting machine 21 rotates the sheave in one circumferential direction around the axis, so that the second rope body 24 is wound around the sheave. As a result, the length of the second strip 24 from the one end 90 to the sheave is shortened, and the inner frame 120 is lifted upward by the second strip 24. Further, the second hoisting machine 21 rotates the sheave to the other circumferential direction around the axis, thereby feeding out the second rope body 24 from the sheave. As a result, the length of the second strip 24 from the one end 90 to the sheave becomes long, and the inner frame 120 moves downward to a position where the second strip 24 is stretched by its own weight. Therefore, the inner frame 120 can be driven up and down with respect to the outer frame 110 by rotating the sheave by the second hoisting machine 21.

  In addition, the outer frame 110 and the inner frame 120 are formed with drop prevention portions 113 and 123 that prevent the inner frame 120 from dropping from the outer frame 110 even if the second cable body 24 is broken. . When the inner frame side dropout prevention portion 123 comes into contact with the outer frame side dropout prevention portion 113, the lowering of the inner frame 120 with respect to the outer frame 110 is prevented.

  In the present embodiment, the outer frame side drop prevention portion 113 includes a first connecting member 113a that connects the two vertical frame portions 112 arranged in the other left and right direction Y2, and two vertical frames arranged in the left and right direction one Y1. And a second connecting member 113b for connecting the frame portion 112. The first connecting member 113a protrudes to the other side Y2 in the left-right direction from the vertical frame portion 112. The second connecting member 113b protrudes in the left and right direction Y1 from the vertical frame portion 112. Each of the connecting members 113a and 113b extends in parallel with the vehicle loading direction X.

  The inner frame side drop prevention portion 123 is fixed to the first side wall portion 82 of the inner frame 120, and the first abutting member 123 a that protrudes from the inner frame 120 in the left-right direction Y 2 and the second side wall 84 of the inner frame 120. A first abutting member 123b that is fixed and protrudes from the inner frame 120 in the left-right direction Y1. Each of the contact members 123a and 123b is fixed to an intermediate portion of the inner frame 120 excluding both ends in the carry-out direction, and extends in parallel with the vehicle carry-out direction X. When the inner frame 120 moves up and down with respect to the outer frame 110, the contact members 123 a and 123 b are prevented from interfering with the vertical frame portion 112.

  The first connecting member 113a and the first contact member 123a face each other in the left-right direction Y. Similarly, the second connecting member 113b and the second contact member 123b face each other in the left-right direction Y. Further, in a state where the inner frame 120 is disposed at a lower position with respect to the outer frame 110, the contact members 123a and 123b are disposed at an upper Z1 than the connection members 113a and 113b. If the second cable body 24 breaks, the inner frame 120 is lowered below the lower position, and the contact members 123a and 123b contact the connecting members 113a and 113b. Further descent is prevented.

  FIG. 4 is a cross-sectional view for explaining the lowered state of the car 100. 4A shows a state in which the car 100 is lowered, FIG. 4B shows a state in which the outer frame 110 is stopped, and FIG. 4C shows an outer frame 110 for level adjustment. Shows a state in which the inner frame 120 is lowered.

  When the car 100 reaches the lower floor from the floor above the lower floor, the movement of the car 100 is as follows. First, as shown in FIG. Keeps the standard position in place. The car 100 is driven downward by the driving means 8 toward the lower floor in a state where the outer frame 110 and the inner frame 120 are integrated.

  Next, as shown in FIG. 4B, a gap that is predetermined with respect to the vertical distance between the lower end surface 112 c of the outer frame 110 that is the lowermost end surface of the car 100 in the standard state and the bottom surface 57 of the hoistway 51, so-called With the lower clearance distance d1 secured, the driving means 8 stops driving and stops the car 100. In the present embodiment, the lower end surface 112c of the outer frame 110, which is the lowermost end surface of the car 100 in the standard state, is positioned above the floor surface 6 of the lower end floor with the lower clearance distance d1 secured. In the present embodiment, the lower clearance distance d1 is set to 50 mm or more and 150 mm or less. This lower clearance distance d1 may be determined, for example, by law. In the present embodiment, since it is an elevator for small parcels, the lower clearance distance d1 is set to 50 mm or more by complying with laws and regulations. In addition, when the driving of the driving means 8 is stopped, the mounting surface 120a of the inner frame 120 is disposed at a step distance H2 that is higher than the floor surface 6 of the lower floor by a predetermined step distance H2.

  Next, as shown in FIG. 4C, in the car 100, the inner frame 120 is further driven downward by the moving means 20 relative to the outer frame 110. As a result, the inner frame 120 is positioned at a lower position with respect to the outer frame 110, leveling is performed, and the mounting surface 120a of the inner frame 120 and the floor surface 6 of the lower floor are flush with each other. In the present embodiment, “equal” includes a case where it is substantially flush. In this way, the inner frame 120 moves to a predetermined set distance H1 downward Z2 with respect to the outer frame 110, so that the up-down direction Z between the mounting surface 120a of the inner frame 120 and the floor surface 6 of the lower floor is set. The step is eliminated. Further, the hoistway 51 is configured such that the step in the vertical direction Z between the mounting surface 120a of the inner frame 120 and the floor surface 6 of the lower floor is eliminated, and the lowermost end surface 120b of the inner frame 120 and the hoistway 51 A slight gap d <b> 2 is formed between the bottom surface 57. The gap d2 is sufficiently smaller than the above-described lower clearance distance d1.

  Therefore, as shown in FIGS. 4B and 4C, the set distance H1 that is the vertical distance between the standard position and the lower position is the outer frame 110 that is the lowest end surface of the car 100 in the standard state. The lower end surface 112c is positioned at a position above the bottom surface 57 of the hoistway 51 by a lower clearance distance d1 between the mounting surface 120a of the inner frame 120 and the floor surface 6 of the lower floor. The distance is set equal to the step distance H2. Specifically, the distance for the lower clearance is d1, the vertical distance from the lowest end surface 120b of the inner frame 120 to the mounting surface 120a is H4, and the distance from the bottom surface 57 of the hoistway 51 to the floor surface 6 of the lower floor is. The vertical distance is H5. In this case, the set distance H1 is represented by (d1 + H4-H5).

  As shown in FIGS. 1 and 4B, the lifting device 50 includes an outer frame position detection unit 30 and an inner frame position detection unit 40. The outer frame position detection means 30 detects that the outer frame 110 has reached the outer frame stop position set in the building 54, and outputs an output signal indicating that. As shown in FIG. 4B, the outer frame stop position is such that the vertical distance between the lower end surface 112c of the outer frame 110, which is the lowermost end surface of the car 100 in the standard state, and the bottom surface 57 of the hoistway 51 is lower. The relative position of the outer frame 110 with respect to the building 54 is the clearance distance d1.

  The inner frame position detection means 40 detects that the inner frame 120 has reached the standard position and the lower position in a state where the outer frame 110 is stopped at the lower floor and outputs an output signal indicating them.

  In the present embodiment, the outer frame position detection means 30 and the inner frame position detection means 40 are realized by a common proximity sensor. The proximity sensor includes a first detection body 31, a second detection body 32, and a detected body 33. The detected object 33 is fixed to the inner frame 120. Each detection body 31 and 32 is provided in the hoistway 51, for example, is each fixed to the guide rail which guides the cage | basket | car 100 to an up-down direction.

  As shown in FIG. 4B, in a state where the car 100 in the standard state has reached the outer frame stop position, the first detection body 31 is fixed to the building 54 so as to face the detected body 33. Is set. Therefore, when the car 100 in the standard state reaches the outer frame stop position, the first detection body 31 and the detection body 33 face each other, and the first detection body 31 detects the proximity state of the detection body 33. The first arrival signal is output. In this case, the first arrival signal is a signal indicating that the car 100 in the standard state has reached the outer frame stop position. Therefore, the outer frame position detection means 30 is realized including the first detection body 31 and the detection target 33.

  As shown in FIG. 4C, after the car 100 in the standard state is stopped at the outer frame stop position, and the inner frame 120 is stopped at the lower position, the second detection body 32 is moved to the detection target 33. A fixed position with respect to the building 54 is set so as to face each other. Therefore, when the inner frame 120 near the lower floor is located at the lower position, the second detection body 32 and the detected body 33 face each other, and the second detection body 32 detects the proximity state of the detected body 33. The second arrival signal is output. Further, since the inner frame 120 in the vicinity of the lower floor is located at the standard position, the first detection body 31 and the detection body 33 face each other, and the first detection body 31 detects the proximity state of the detection body 33. The first arrival signal is output.

  In this case, the second arrival signal is a signal indicating that the inner frame 120 located near the lower floor has reached the lower position. The first arrival signal is a signal indicating that the inner frame 120 located in the vicinity of the lower floor has reached the standard position. Therefore, the inner frame position detection means 40 is realized including the first detection body 31, the second detection body 32, and the detected body 33.

  The proximity sensors constituting each of the detection means 30 and 40 may be contact type or non-contact type. For example, a contact type limit switch, a photoelectric sensor, a magnetic sensor, an infrared sensor, or the like can be used. From the viewpoint of durability, the proximity sensor is preferably a non-contact type. Each of the detection means 30 and 40 may use a position sensor other than the proximity sensor, for example, a distance measuring sensor.

  The outer frame position detection means 30 may be any means that detects the position of the car 100 in the standard state with respect to the building 54. The inner frame detection means 40 may be any means that detects the position of the inner frame 120 relative to the building 54. Further, the outer frame position detection means 30 and the inner frame position detection means 40 may be formed separately. For example, the outer frame position detection means 30 may detect the position of the outer frame 110 with respect to the building 54 and determine that the car 100 has reached the outer frame stop position. Further, the inner frame position detection means 40 may detect the position of the inner frame 120 with respect to the outer frame 110. Further, both or one of the outer frame position detection means 30 and the inner frame position detection means 40 does not detect the stop position, but detects a position above the stop position in anticipation of the braking amount. You may make it do.

  FIG. 5 is a partially enlarged view showing the relationship between the car 100 and the building 54 on the lower floor. FIG. 5A shows an enlarged view of the state of FIG. FIG. 5B shows an enlarged view of the state of FIG. As shown in FIG. 5A, the bottom surface 57 of the hoistway 51 has a predetermined stop position where the outer frame 110 is predetermined when the driving of the driving unit 8 is stopped and the lowering of the outer frame 110 is stopped. An outer frame buffer member 96 is provided to prevent the bottom surface 57 of the hoistway 51 and the lower end surface 112c of the outer frame 110 from colliding with each other even if it goes too far downward Z2. The outer frame cushioning member 96 projects upward from the bottom surface 57 of the hoistway 51 with a projecting amount smaller than the lower clearance distance d1. Therefore, when the outer frame 110 is normally stopped by the driving means 8, contact between the outer frame cushioning member 96 and the outer frame 110 is prevented. The outer frame cushioning member 96 is disposed at a position where it can be prevented from interfering with the inner frame 120 and facing the vertical frame portion 112 from below.

  As shown in FIG. 5B, the bottom surface 57 of the hoistway 51 has a predetermined stop position where the inner frame 120 is predetermined when the driving by the moving means 20 is stopped and the lowering of the inner frame 120 is stopped. In order to prevent a collision between the bottom surface 57 of the hoistway 51 and the lower end portion of the inner frame 120 even if it goes too far downward Z2, an inner frame buffer member 97 is provided. The inner frame buffer member 97 projects upward from the bottom surface 57 of the hoistway 51. The inner frame cushioning member 97 has a gap with respect to the lowermost end surface 120b of the inner frame 120 in a state where the mounting surface 120a of the inner frame 120 and the floor surface 6 of the lower floor are kept flush with each other. Therefore, when the inner frame 120 is normally stopped by the moving means 20, contact between the inner frame cushioning member 97 and the inner frame 120 is prevented. The inner frame cushioning member 97 only needs to be formed at a position avoiding interference with the second cord body 24.

  The outer frame cushioning member 96 and the inner frame cushioning member 97 are realized by a material that absorbs impact, and are made of synthetic resin, synthetic rubber, or the like. Further, the outer frame buffer member 96 and the inner frame buffer member 97 may be provided on the car 100 instead of the bottom surface 57 of the hoistway 51. In this case, the outer frame buffer member 96 is the lowermost end portion of the outer frame 110. The inner frame buffer member 97 is the lowermost end portion of the inner frame 120. Also by this, the same effect as the case where the buffer members 96 and 97 are provided on the bottom surface 57 of the hoistway 51 can be obtained.

  FIG. 6 is a block diagram showing an electrical configuration of the lifting device 50. As described above, the lifting device 50 includes the driving unit 8, the moving unit 20, the outer frame position detection unit 30, and the inner frame position detection unit 40. The elevating device 50 includes a control unit 150, a door opening / closing unit 7, and an input unit 9. The input means 9 is given a car ascending / descending command from the operator, and gives a signal indicating the ascending / descending instruction to the control means 150. The input means 9 is realized by a push button, for example. The door opening / closing means 7 is formed in the building 54 and opens and closes the opening of the hoistway 51 formed for each floor where the car 100 can be stopped.

  The control means 150 is given a signal indicating an elevation command of the car 100 from the input means 9. The control means 150 is provided with the above-described arrival signals from the outer frame position detection means 30 and the inner frame position detection means 40. The control means 150 controls the drive means 8, the moving means 20 and the door opening / closing means 7 according to a predetermined control program based on the signals given from the input means 9 and the detection means 30 and 40. Further, the control means 150 is given signals indicating their states from the driving means 8, the moving means 20, and the door opening / closing means 7.

  The drive means 8 has a rotation detection means for detecting the rotation state of the sheave. Similarly, the moving means 20 has a rotation detecting means for detecting the rotation state of the sheave. The rotation detecting means of the driving means 8 and the moving means 20 gives a stop completion signal indicating that the sheave has stopped rotating to the control means 150.

  The control unit 150 includes a storage unit, a calculation unit, and an input / output unit. The storage unit stores a predetermined control program. The input / output unit supplies a signal supplied from each unit connected to the control unit 150 to the calculation unit, and supplies a signal supplied from the calculation unit to each unit connected to the control unit 150. The calculation unit reads and executes a control program stored in the storage unit, and provides a signal indicating a calculation result to the input / output unit according to a signal supplied from the input / output unit.

  The storage unit is realized by a storage circuit such as a ROM (Read Only Memory) or a RAM (Random Access Memory). The arithmetic unit is realized by an arithmetic processing circuit such as a microcomputer including a CPU (Central Processing Unit). The input / output unit is realized by an interface circuit. The control means 150 is realized by a control panel in the lifting device.

  FIG. 7 is a flowchart showing the elevation control procedure by the control means 150. In order to facilitate understanding, the lifting control procedure shown in FIG. 7 will be described only for the lifting operation on the lower floor related to the present invention, and the others will be omitted.

  When the car 100 is arranged on the lower floor closest to the bottom surface 57 of the hoistway 51, the control means 150 controls the driving means 8 in the standard state in which the inner frame 120 is arranged at the standard position to The lower end surface 112c of the outer frame 110, which is the lowermost end surface of the car 100, is positioned at a position above the bottom surface 57 of the hoistway 51 by a lower clearance distance d1 to stop the car 100, and then the moving means 20 is moved. The inner frame 120 is arranged at the lower position by controlling.

  Specifically, in step S0, the control means 150 maintains the car 100 in the standard state and moves the car 100 to the upper Z1 from the lower floor. In this state, when a signal indicating an arrangement request command for requesting the car 100 to the lower floor is given from the input means 9, the control means 150 proceeds to step S1 and starts a lifting operation.

  In step S <b> 1, the control unit 150 gives a signal indicating an outer frame lowering command to the driving unit 8. The drive means 8 to which the signal indicating the outer frame lowering command is given rotates the sheave around the axis in one circumferential direction to lower the car 100. When a signal indicating the outer frame lowering command is given in this way, the process proceeds to step S2.

  In step S <b> 2, the control unit 150 determines whether or not the first arrival signal is given from the first detection body 31. Control means 150 repeats step S2 until the first arrival signal is given. As shown in FIG. 4B, when the outer frame 110 reaches the outer frame stop position and the first arrival signal is given, the control unit 150 proceeds to step S3.

  In step S <b> 3, the control unit 150 gives a signal indicating a drive stop command to the drive unit 8. The drive means 8 to which the signal indicating the drive stop command is given stops the sheave from rotating and stops the lowering of the outer frame 110 with respect to the building 54. When a signal indicating a drive stop command is given in this way, the process proceeds to step S4. In step S4, the control means 150 determines whether or not a stop completion signal is given from the driving means 8. Control means 150 repeats step S4 until a stop completion signal is given. When the sheave of the driving unit 8 stops rotating and the control unit 150 receives a signal indicating a stop completion command for the outer frame 110, the process proceeds to step S5.

  In step S <b> 5, the control unit 150 gives a signal indicating an inner frame lowering command to the moving unit 20. The moving means 20 to which the signal indicating the inner frame lowering command is given rotates the sheave in one circumferential direction around the axis to lower the inner frame 120 relative to the outer frame 110. The control means 150 gives the door opening / closing means 7 a signal indicating a lower floor door opening command. The door opening / closing means 7 to which the signal indicating the lower floor door opening command is given starts an operation of opening the lower floor opening. When the signals indicating the inner frame lowering instruction and the lower floor door opening instruction are given in this way, the process proceeds to step S6.

  In step S <b> 6, the control unit 150 determines whether or not the second arrival signal is given from the second detection body 32. Control means 150 repeats step S6 until the second arrival signal is given. As shown in FIG. 4C, when the inner frame 120 reaches the lower position and the second arrival signal is given, the control means 150 proceeds to step S7.

  In step S <b> 7, the control unit 150 gives a signal indicating a movement stop command to the moving unit 20. The moving means 20 to which the signal indicating the movement stop command is given stops the sheave from rotating and stops the lowering of the inner frame 120 with respect to the outer frame 110. When the signal indicating the movement stop command is given in this way, the process proceeds to step S8. In step S8, the control means 150 determines whether or not a stop completion signal has been given from the moving means 20. Control means 150 repeats step S8 until a stop completion signal is given. When the sheave of the moving means 20 stops rotating and the control means 150 receives a signal indicating a stop completion command for the inner frame 120, the process proceeds to step S9.

  In step S9, when a signal indicating an arrangement request command for requesting the car 100 is given to the floor above the lower floor from the input means 9, the control means 150 proceeds to step S10. In step S9, the control means 150 repeats step S9 until a signal indicating an arrangement request command is given.

  In step S <b> 10, the control unit 150 gives a signal indicating an inner frame raising command to the moving unit 20. The moving means 20 to which the signal indicating the inner frame raising command is given rotates the sheave around the axis in the other circumferential direction to raise the inner frame 120 relative to the outer frame 110. The control means 150 gives a signal indicating a lower floor door closing command to the door opening / closing means 7. The door opening / closing means 7 to which the signal indicating the lower floor door closing instruction is given starts the operation of closing the opening of the lower floor. When the signals indicating the inner frame raising command and the lower floor door closing command are given, the process proceeds to step S11.

  In step S <b> 11, the control unit 150 determines whether or not the first arrival signal is given from the first detection body 31. The control means 150 repeats step S11 until the first arrival signal is given. As shown in FIG. 4B, when the inner frame 120 reaches the standard position and the first arrival signal is given, the control unit 150 proceeds to step S12.

  In step S <b> 12, the control unit 150 gives a signal indicating a movement stop command to the moving unit 20. The moving means 20 to which the signal indicating the movement stop command is given stops the rotation of the sheave and stops the rise of the inner frame 120 relative to the outer frame 110. When a signal indicating a movement stop command is given in this way, the process proceeds to step S13. In step S <b> 13, the control unit 150 determines whether or not a stop completion signal is given from the moving unit 20. Control means 150 repeats step S13 until a stop completion signal is given. When the rotation of the sheave of the moving means 20 stops and the control means 150 receives a signal indicating a stop completion command for the inner frame 120, the process proceeds to step S14.

  In step S <b> 14, the control unit 150 gives a signal indicating an outer frame raising command to the driving unit 8. The driving means 8 to which the signal indicating the outer frame raising command is given rotates the sheave around the axis in the other circumferential direction to raise the car 100. When the signal indicating the outer frame raising command is given in this way, the process proceeds to step S15.

  In step S15, the control means 150 designates that a detection means (not shown) has reached a position where the floor surface of the designated upper floor and the mounting surface 120a of the inner frame 120 are flush with each other. It is determined whether or not a floor arrival signal is given. Control means 150 repeats step S15 until a designated floor arrival signal is given. The floor surface of the designated upper floor and the mounting surface 120a of the inner frame 120 are flush with each other, and the control means 150 proceeds to step S16 when a designated floor arrival signal is given.

  In step S16, the control means 150 gives a signal indicating a drive stop command to the drive means 8. The drive means 8 to which the signal indicating the drive stop command is given stops the rotation of the sheave and stops the rise of the outer frame 110 with respect to the building 54. When a signal indicating a drive stop command is given in this way, the process proceeds to step S17. In step S <b> 17, the control unit 150 determines whether a stop completion signal is given from the driving unit 8. Control means 150 repeats step S17 until a stop completion signal is given. When the sheave of the driving unit 8 stops rotating and the control unit 150 receives a signal indicating a stop completion command for the outer frame 110, the process proceeds to step S18.

  In step S18, the control means 150 gives the door opening / closing means 7 a signal indicating a designated floor door opening command. The door opening / closing means 7 to which the signal indicating the designated floor door opening command is given starts the operation of opening the designated floor opening. When the signal indicating the lower floor door opening command and the door closing command are given thereafter, the process proceeds to step S19. In step S19, the control operation is terminated with the door closed and in a standby state. In this state, when a signal indicating an arrangement request command for requesting the car 100 to the lower floor is given from the input means 9, the control means 150 proceeds again to step S <b> 1 and starts a lifting operation. When operating on a floor other than the lower floor, the car 100 is moved to the designated floor without moving the inner frame 120 up and down relative to the outer frame 110.

  As described above, according to the present embodiment, the car 100 is formed in a double structure of the inner frame 120 and the outer frame 110, the driving means 8 that drives the outer frame 110 up and down relative to the building 54, and the inner frame. Moving means 20 for moving up and down by placing 120 on the outer frame 110 is provided. The driving means 8 for moving the car 100 across a plurality of floors is stopped in a state where a step is generated between the riding surface 120a of the car 100 and the floor surface 6 of the lower floor. Even if the depth of the bottom surface 57 of the hoistway 51 with respect to the floor surface 6 of the lower floor is reduced by stopping by generating a level difference in this way, when the car is stopped by the driving means 8, A sufficient lower clearance distance d1 can be secured between the lower end surface 112c of the outer frame 110, which is the lower end surface, and the bottom surface 57 of the hoistway 51.

  As a result, even if the car 100 is stopped by the driving means 8 even if the outer frame stop position goes slightly downward Z2, the outer surface which is the bottom surface 57 of the hoistway 51 and the lowermost end surface of the car 100 in the standard state. Collision with the lower end surface 112c of the frame 110 can be prevented. In the present embodiment, the inner frame 120 is moved downward with respect to the outer frame 110 by the moving means 20 for finely moving the mounting surface 120a, so that the mounting surface 120a and the floor surface 6 of the lower floor are provided. Can be made flush with each other.

  Thus, in the present embodiment, the lower clearance distance d1 can be secured and the level of the mounting surface 120a and the floor surface 6 of the lower floor can be adjusted, and the hoistway 51 can be further shallowly formed. it can. Since the hoistway 51 does not have to be dug down by the lower clearance distance d1 from the floor surface 6 on the lower floor, the building space can be effectively used. Moreover, even if it is a case where the raising / lowering apparatus 50 is newly introduced with respect to the existing building, the effort of the digging work which digs up the hoistway 51 can be reduced.

  In addition, this embodiment is particularly preferably used when the car 100 moves up and down the hoistway 51 set on the intermediate floor whose lower floor is a floor other than the lowest floor of the building. For example, when an underground floor is formed, even if it is an underground floor, it can be an intermediate floor if it is not the lowest floor of the building. When the intermediate floor is set as the lower floor of the hoistway 51, there is a floor below the intermediate floor in the building 54. Therefore, an area between the floor of the intermediate floor and the ceiling of the lower floor is secured. For this reason, the bottom surface 57 of the hoistway 51 may not be dug deeply with respect to the floor surface of the intermediate floor. According to the present embodiment, the depth between the bottom surface 57 of the hoistway 51 and the floor surface 6 of the lower floor can be reduced after securing the lower clearance distance d1, so that the lower floor is an intermediate floor. Even so, it is not necessary to dig deeply into the bottom surface 57 of the hoistway 51 formed on the intermediate floor. Thereby, regarding the formation of the hoistway 51, the influence on the lower floor with respect to the intermediate floor can be reduced.

  For example, the vertical distance between the floor surface of the intermediate floor and the ceiling surface of the lower floor relative to the intermediate floor is small, and the bottom surface 57 of the hoistway 51 is set to the lower Z2 by the lower clearance distance d1 from the floor surface of the intermediate floor. It may be difficult to dig down. In the present embodiment, since the outer frame 110 is stopped at a position Z1 sufficiently higher than the floor surface of the intermediate floor, there is no need to dig down the bottom surface 57 of the hoistway 51 downward from the floor surface of the intermediate floor by the lower clearance distance d1. The restrictions for applying the lifting device 50 can be reduced, and the number of buildings where the lifting device 50 can be installed can be increased.

In the present embodiment, the lower clearance distance d1 is set to 50 mm or more.
Further, in the present embodiment, by setting the lower clearance distance d1 to be 150 mm or less, it is possible to prevent the movement amount of the inner frame 120 by the moving means 20 from being excessive, and the inner frame 120 can be removed. The time required to move from the standard position to the lowered position can be reduced. For example, the time T1 required to move the inner frame 120 from the standard position to the lowered position is equal to or less than the opening / closing time T2 required until the door opening / closing means 7 completely opens from the state where the lower floor opening of the hoistway 51 is closed. (T1 ≦ T2). As a result, as shown in step S5 of FIG. 7, even when the door starts to be opened and the lowering of the inner frame 120 relative to the outer frame 110 is started, until the door completely opens, The floor surface 6 can be made flush with each other, and an operation delay of the lifting operation can be prevented.

  Further, according to the present embodiment, the outer frame internal space 60 of the outer frame 110 is opened downward Z2, and the inner frame 120 can be accommodated in the outer frame internal space 60. Therefore, the inner frame 120 can shift from a standard state in which the inner frame 120 is accommodated in the outer frame inner space 60 to an arrangement state in which at least a lower end portion protrudes downward Z2 from the outer frame 110. Further, the outer frame 110 is formed in a frame-like body, and the strength can be improved by guiding the inner frame 120 with the plurality of vertical frame portions 112. Further, since the ceiling portion 111 is connected to the first strip body 52 of the driving means 8, the car can be stably compared to the case where the vertical frame portion 112 is connected to the first strip body 52 of the driving means 8. 100 can be raised and lowered.

  In the present embodiment, the vertical frame portions 112 are arranged at the four corners in the horizontal direction of the ceiling portion. Each vertical frame portion 112 is formed in an L-shape and faces the four side surfaces of the inner frame 120 in the horizontal direction. Thereby, even if the inner frame 120 is supported from the lower Z2 by the second ridge body 24, when a horizontal external force is applied to the inner frame 120, the corner portions of the side wall portions 82 to 84 become vertical frames. By being guided by the portion 112, it is possible to prevent the inner frame 120 from being excessively displaced in the horizontal direction with respect to the outer frame 110.

  Although not shown, the hoistway 51 is formed with a guide rail that guides the car 100 in the vertical direction with respect to the hoistway 51. In the present embodiment, guide means are preferably formed on at least one of the side wall portions 82 to 84 of the inner frame 120. The guide means is realized by a guide roller or a guide shoe. As a result, shaking that occurs when the car 100 moves up and down can be prevented. Moreover, it can prevent that the hoistway wall surface and the cage | basket | car 100 collide.

  In the present embodiment, the inner frame 120 is formed in a bottomed box shape that opens to one side in the horizontal direction, and defines an inner frame inner space 80 in which a vehicle is accommodated. The side surface of the inner frame internal space 80 excluding the inner frame entrance / exit 86 is closed by the side walls 82 to 84. Accordingly, it is possible to prevent a vehicle mounted in the inner frame internal space 80 from falling when the car is lifted or coming into contact with the hoistway wall surface forming the hoistway 51. Further, the inner frame 120 may be provided with second door opening / closing means for opening and closing the inner frame doorway 86 in the car 100. The second door opening / closing means is driven up and down together with the car 100, and closes the inner frame doorway 86 when the car is raised and lowered. Thus, the vehicle can be more reliably protected during the ascent / descent.

  Moreover, in this embodiment, the moving means 20 is comprised including the 2nd winding machine 21 fixed to the outer frame 110, and the 2nd cable body 24 which connects the 2nd winding machine 21 and the inner frame 120. Is done. Thus, by realizing the moving means 20 using the second hoisting machine 21 and the second rope body 24, the inner frame 120 can be raised and lowered with respect to the outer frame 110. In this case, winding the second strip 24 with the second hoisting machine 21 prevents the moving means from becoming large even if the movable distance of the inner frame 120 with respect to the outer frame 110 becomes longer. it can.

  The second hoisting machine 21 is disposed above the ceiling portion 111 of the outer frame 110 and is disposed in the upper region of the car 100. Since the upper area of the car 100 has a relatively large space, it is possible to prevent the hoistway 51 from being enlarged by arranging the second hoisting machine 21 in this area. Further, in the present embodiment, the inner frame 120 is supported from below by the second rope body guided by the pulleys 22 and 23. By guiding with the two pulleys 22 and 23, the inner frame 120 can be stably supported. Furthermore, since the second cable body 24 is disposed so as to pass through the center of gravity of the car 100, the inner frame 120 can be supported more stably.

  In the present embodiment, by using the pulleys 22 and 23 supported by the inner frame 120, the inner frame 120 can be regarded as an object supported by the movable pulley. In this case, the output of the second hoisting machine 21 required for raising the inner frame 120 can be reduced as compared with the case where the inner frame 120 is suspended by the second cable body 24. In addition, the tension applied to the second ridge body 24 can be reduced. Furthermore, the amount of movement of the inner frame 120 can be made smaller than the amount of winding of the second strip body 24. As a result, the inner frame 120 can be moved up and down slowly and can be moved up and down with high accuracy.

  The pulleys 22 and 23 are supported not on the bottom wall portion 81 of the inner frame 120 but on the side wall portions 82 and 84. Thereby, the protrusion amount H4 in which the pulleys 22 and 23 protrude downward Z2 from the lowermost end surface 120b of the inner frame 120 can be reduced. The protrusion amount H4 is set to a dimension as small as possible after preventing the pulleys 22 and 23 from coming into contact with the lowermost end surface 120b of the inner frame 120.

  In the present embodiment, actually, the lowermost end surface of the inner frame 120 corresponds to the lowermost end surface of the pulleys 22 and 23 or the second ridge body 24. By supporting the pulleys 22 and 23 on the side walls 82 and 84 of the inner frame 120, the protrusion amount H4 can be reduced. Therefore, the dimension between the mounting surface 120a of the inner frame 120 and the lowermost end surface of the inner frame 120 can be reduced.

  When the mounting surface 120 a and the floor surface 6 of the lower floor are leveled, the bottom surface 57 of the hoistway 51 needs to form a gap with respect to the lowermost surface 120 b of the inner frame 120. As described above, in the present embodiment, since the dimension between the mounting surface 120a of the inner frame 120 and the lowermost end surface 120b of the inner frame 120 can be reduced, the lowermost end surface of the car 100 in the standard state. In addition, a gap between the lower end surface 112c of the outer frame 110 and the bottom surface 57 of the hoistway 51 can be formed, and the bottom surface 57 of the hoistway 51 can be prevented from becoming deeper than the floor surface 6 of the lower floor. .

  Further, the speed V2 at which the second hoisting machine 21 used for the moving means 20 drives the inner frame 120 to descend is higher than the speed V1 at which the first hoisting machine 53 used for the driving means 8 drives the outer frame 110 to descend. It is preferable to set a small value (V2 ≦ V1). By slowing down the moving speed of the inner frame 120 by the moving means 20 in this way, the lowermost end surface 120b of the inner frame can be obtained without securing the lower clearance distance d1 when the moving means 20 stops the lowering of the inner frame. The possibility of contacting the bottom surface 57 of the hoistway 51 can be reduced.

  Further, the moving amount by which the driving means 8 drives the car 100 to move up and down is large in order to move the car 100 between the floors. On the other hand, the moving means 20 drives the inner frame 120 to move up and down with respect to the outer frame 110. The amount of movement to be performed is set to be smaller than the lower clearance distance d1 and less than the vertical distance between the floor surfaces of two adjacent floors, specifically 50 mm to 150 mm. Therefore, the moving means 20 generates less stretch of the cable body 24. By reducing the amount of movement of the inner frame 120 by the moving means 20 in this way, when the inner frame lowering stop by the moving means 20 is stopped, the extension of the second strip 24 can be achieved without securing the lower clearance distance d1. By reducing the influence, the possibility that the lowermost end surface of the inner frame contacts the bottom surface 57 of the hoistway 51 can be reduced.

  Further, by reducing the moving speed and shortening the moving amount, the positioning accuracy of the moving means 20 can be improved as compared with the positioning accuracy of the driving means 8, and the level of the mounting surface 120a can be accurately adjusted. it can.

  Further, the set distance H1 that is the vertical direction between the standard position and the lower position set in the outer frame 110 is set to an interval of the step distance H2 between the mounting surface 120a of the inner frame 120 and the floor surface 6 of the lower floor. Is done. In this state, the mounting part is moved downward by a set distance H1 corresponding to the step distance H2 and stopped with respect to the base, so that the vertical positions of the mounting surface 120a and the floor surface 6 of the lower floor are matched. It is possible to eliminate the step difference. That is, accurate level alignment can be performed.

  Moreover, in this embodiment, the control means 150 determines the stop timing of the drive means 8 in response to the 1st arrival signal given from the 1st detection body 31 of a proximity sensor. Thus, the control unit 150 can easily determine the drive stop timing of the drive unit 8. Further, since the proximity sensor detects the relative position between the car 100 in the standard state and the building 54, the lower end surface 112c of the outer frame 110, which is the lowermost end surface of the car 100 in the standard state, faces from below the hoistway 51. It is possible to accurately detect that the position has reached a position above the bottom surface by the lower clearance distance d1. In the present embodiment, the control unit 150 determines the timing for stopping the driving of the driving unit 8 based on the first arrival signal given from the first detection body 31 of the proximity sensor, but still another embodiment of the present invention. In this embodiment, the first hoisting machine 53 is provided with a rotary encoder for detecting rotation, and the control means 150 calculates the stop timing of the moving means 20 by using an arithmetic program based on a signal from the rotary encoder. Good.

  Moreover, in this embodiment, the timing which stops the drive of the moving means 20 is determined by the 1st arrival signal given from the 1st detection body 31 of a proximity sensor, and the 2nd arrival signal which can be given from the 2nd detection body 32. FIG. As a result, the control unit 150 can easily determine the drive stop timing of the moving unit 20. Further, since the proximity sensor detects the relative position between the inner frame 120 and the building 54, the inner frame 120 reaches a lower position with respect to the outer frame 110 stopped on the lower floor, and the mounting surface of the inner frame 120 It is possible to accurately detect that the levels of 120a and the floor surface 6 of the lower floor are the same. In the present embodiment, the timing at which the control unit 150 stops driving the moving unit 20 by the first arrival signal given from the first detection body 31 of the proximity sensor and the second arrival signal that can be given from the second detection body 32. However, in still another embodiment of the present invention, the second hoisting machine 21 is provided with a rotary encoder for detecting rotation, and the control means 150 is moved based on a signal from the rotary encoder. The 20 stop timings may be calculated using an arithmetic program.

  Therefore, the control means 150 can stop the car 100 with high accuracy while keeping the lower clearance distance d1 by the driving means 8 in response to the output signal of the proximity sensor. Further, the inner frame 120 can be accurately stopped by the moving means 20 in a state where the mounting surface 120a is leveled with the floor surface 6 of the lower floor.

  Further, by adjusting the positions at which the detection bodies 31 and 32 and the detected body 33 constituting the proximity sensor are fixed, it is not necessary to adjust the operation program by the control means 150, and the lifting apparatus of this embodiment can be realized. . Therefore, even if the size of the lifting device 50, the depth of the hoistway 51, the position of the lower floor, etc. are different, it is only necessary to adjust the fixed position of the proximity sensor, and the operation program of the control means 150 needs to be changed. There is no. Therefore, the versatility of the lifting device can be improved and the operation can be easily prepared.

  Further, as shown in step S4, the control means 150 starts the descent of the inner frame 120 after a signal indicating completion of the stop of the outer frame 110 is given, so that it is possible to reliably determine the stop of the outer frame 110. It is possible to more reliably prevent the car 100 from coming into contact with the bottom surface 57 of the hoistway 51. Further, as described above, by starting the lowering of the inner frame 120 and opening / closing the door at the same time, it is possible to prevent the lifting operation from being delayed. Further, when raising the car 100 from the lower floor, the car 100 is moved to the lower floor with the inner frame aligned with the standard position based on the first arrival signal given from the first detector 31 of the proximity sensor. It can be moved to other floors.

  In the present embodiment, the detected object 33 is fixed to the inner frame 120, and the first detection body 31 and the second detection body 32 are fixed to the building 54, so that the car 100 in the standard state is used for the lower clearance. A position where the distance d1 is secured can be detected, and it can be detected that either the standard position or the lowered position of the inner frame 120 has been reached. This simplifies the configuration.

  In the present embodiment, the outer frame cushioning member 96 and the inner frame cushioning member 97 are provided on the bottom surface 57 or the car 100 of the hoistway 51, so that the outer frame 110 and the inner frame 120 exceed the stop position. Even when it moves downward, it can absorb the downward movement force by colliding with the buffer members 96 and 97, and can prevent the car 100 from colliding with the bottom surface 57 of the hoistway 51.

  The above-described embodiment is merely an example of the invention, and the configuration can be changed within the scope of the invention. In the present invention, the car 100 may be provided with driving means 8 and moving means 20 for driving the car 100 up and down. Here, the driving means 8 is means for driving the car 100 up and down across a plurality of floors. Further, the moving means 20 is a means different from the driving means 8, and is at least the lower clearance distance d 1, the vertical distance between the floor surfaces of two adjacent floors, and at least the vehicle in the car 100 is on board. It is a means to drive the mounting part mounted up and down. Therefore, the structure of the car 100 does not have to include the outer frame 110 and the inner frame 120. For example, any configuration may be used as long as the base portion is driven up and down by the driving means 8 and the mounting portion is driven up and down relative to the base by the moving means 20. The base may not be configured to cover the mounting portion. Further, the lowermost end surface of the car 100 in the lower state may be the lowermost end surface 120b of the inner frame 120, and the lower end surface 112c of the outer frame 110 which is the lowermost end surface of the car 100 in the standard state is also the lowermost surface of the car 100. It may be an end face.

  In the present embodiment, the car 100 can be provided with a car door that opens and closes the inner frame entrance / exit 86 of the inner frame 120. For example, a car door guide member is provided on the outer frame 110, and the car door guide member is provided. You can guide the car door.

  In the present embodiment, the lower clearance distance d1 is set to 50 mm or more and 150 mm or less, but the present invention is not limited to this. For example, the lower clearance distance d1 is set according to the specifications of the lifting device such as the mounting object and the mounting ability. Further, for example, the distance d1 for the lower clearance is the use of a lifting device such as passenger, shared cargo, luggage, housing, and observation, the lifting speed of the car 100 by the driving means 8, the lifting method of the car 100, the presence or absence of a speed reducer It may be determined appropriately according to the above.

  In the present embodiment, when the inner frame 120 is positioned at the lower position on the lower floor, the mounting surface 120a is flush with the floor surface 6 of the lower floor, but the present invention is not limited to this. That is, after the car 100 in the standard state is stopped after securing the distance for the lower clearance, the mounting surface 120a of the inner frame 120 may be moved further downward to approach the floor surface 6 of the lower floor, and is not necessarily The mounting surface 120a and the floor surface 6 of the lower floor need not be flush with each other. For example, if a vertical step between the mounting surface 120a and the floor surface 6 of the lower floor is allowed, the floor surface 6 of the lower floor and the bottom surface of the hoistway 51 can be obtained without digging the bottom surface 57 of the hoistway 51. 57 may be the same.

  Further, in the present embodiment, the proximity sensor is used to detect the positions of the inner frame and the outer frame, but the fixed position between the detection body and the detected body can achieve the above-described effects. Any of the inner frame 120, the outer frame 110, and the building 54 may be used. Further, in the present embodiment, the drop prevention portions 113 and 123 that prevent the inner frame 120 from dropping from the outer frame 110 are illustrated, but the drop prevention members 113 and 123 are also formed with a fall-preventing member with respect to the outer frame of the inner frame. The shape is not limited. Further, the present invention includes even the case where the drop-off prevention portions 113 and 123 are not provided.

  The operation of the control means 150 shown in FIG. 7 is merely an example and may be changed. For example, in this embodiment, it is determined that the stop of the inner frame 120 and the outer frame 110 has been completed, and then the next operation is performed. The operation of each driving unit is received by the arrival information given by the proximity sensor. May start. Further, when the car 100 is raised from the lower floor by having a sensor that detects the relative position of the inner frame 120 with respect to the outer frame 110, the raising operation of the inner frame 120 and the raising operation of the outer frame 110 are simultaneously performed with respect to the outer frame 110. You may go. When raising the car 100 from the lower floor, the control means 150 stops the raising drive of the inner frame 120 by the moving means 20 when a signal indicating that the car has moved to the standard position is given from the proximity sensor. As a result, the rising time can be shortened.

  In the lifting device 50 according to the present embodiment, when the door provided for each floor is opened, the control means 150 controls the driving means 8 and the moving means 20 to prevent them from operating, and for each floor. When the door provided on the door is closed, the control means 150 controls the driving means 8 and the moving means 20 to operate them. This ensures safety. In still another embodiment of the present invention, when the set distance H1 is equal to or less than a predetermined distance, for example, 70 mm or less, a movement command is given to the moving means 20 simultaneously with a door opening command by the door opening / closing means. The inner frame 120 may be moved to a lower position by the moving means 20 while opening the door.

  Also, instead of giving a moving command to the moving means 20 simultaneously with the door opening command by the door opening / closing means, the control means 150 does not stop the inner frame 120 by the moving means 20 and then completes the door opening by the door opening / closing means. An opening command may be given. Accordingly, the door can be opened in a state where the mounting surface 120a is leveled, and an operation in which the inner frame 120 is lowered while the door is opened can be prevented.

  In this embodiment, the door opening / closing means 7 opens and closes the lower floor door in response to a command from the control means 150. However, in still another embodiment of the present invention, the door is manually provided on each floor by the user. The door provided on each floor can be opened when the car 100 is stopped on the floor, and the door is locked in a closed state when the car 100 is not stopped on the floor. A locking mechanism is provided.

  In the present embodiment, the operation is performed in response to the output of the position sensor. However, the movement distance, movement speed, movement time, etc. of the car 100 can be defined in advance. When the positions of 110 and the inner frame 120 can be determined, the position sensor can be omitted by storing the movement stop timing in advance by the control means 150. Further, for example, the control means 150 may determine the positions of the outer frame 110 and the inner frame 120 based on a signal from an encoder that detects the amount of rotation of a sheave mounted on the hoist. The inner frame position detection means may be a position sensor that determines whether the inner frame 120 is positioned at the standard position and the lower position with respect to the outer frame 110 as well as the position of the inner frame with respect to the building.

It is a front view which shows typically the raising / lowering apparatus 50 which is one Embodiment of this invention. 1 is an exploded perspective view showing a car 100. FIG. 1 is an overall perspective view of a car 100 to which an outer frame 110 and an inner frame 120 are coupled. It is sectional drawing for demonstrating the fall state of the cage | basket | car 100. FIG. It is the elements on larger scale which show the relationship between the cage | basket | car 100 and the building 54 in a lower end floor. 3 is a block diagram showing an electrical configuration of the lifting device 50. FIG. 3 is a flowchart showing a lifting control procedure by a control means 150. It is sectional drawing which shows the raising / lowering apparatus of a prior art typically.

Explanation of symbols

6 Floor of lower floor 8 Driving means 20 Moving means 21 Second hoisting machine 22, 23 Pulley 53 First hoisting machine 100 Car 110 Outer frame 111 Ceiling part of outer frame 112 Vertical frame part 112c of outer frame Lower end surface 120 Inner frame 120a Loading surface of inner frame 150 Control means

Claims (8)

A lifting device including a car that is provided so as to be able to move up and down, and a car that lifts and lowers the car, and a controller that controls the driving means.
The car is a base that is driven up and down by the drive means;
A mounting portion that is provided so as to be movable in the vertical direction with respect to the base portion and has a mounting surface on which a vehicle can be mounted;
The mounting portion is moved over a standard position set in advance with respect to the base portion and a lower position that is lower than the lower end portion of the base portion and set below the standard position. Moving means,
The control means controls the driving means in a state in which the mounting portion is arranged at the standard position when the car is arranged on the lower floor closest to the bottom surface facing the lower side of the hoistway, and the car is controlled. The car is placed at a position above the floor surface of the lower floor and at a position above the bottom surface facing the lower side of the hoistway by a predetermined distance d1. After being stopped, the moving means is controlled to place the mounting portion at the lower position.   The elevator apparatus according to claim 1, wherein a car moves up and down on a hoistway in which the lower floor is set to a floor other than the lowest floor of the building.   The lifting device according to claim 1 or 2, wherein the lifting device is for small parcels, and the predetermined distance d1 is 50 mm or more. The base is a frame-like body that is formed with an internal space that opens downward, and that can accommodate a mounting portion in the internal space,
A ceiling portion disposed above the mounting portion and connected to the driving means;
The lifting device according to claim 1, further comprising: a plurality of vertical frame portions that are connected to the ceiling portion, extend downward from the ceiling portion, and guide the mounting portion. The moving means includes a cable body having one end connected to the base,
5. A hoisting machine that is fixed to the upper surface of the ceiling portion of the base and that is connected to the other end of the rope and can wind up the rope. Lifting device.   The lower position is a state in which the car is stopped at a position above the bottom surface where the lowermost end surface of the car faces from the lower side of the hoistway by a predetermined distance d1 with the mounting portion disposed at the standard position. Thus, the position is set to a position moved downward from the standard position by a set distance H1 corresponding to the step distance H2 between the mounting surface of the mounting portion and the floor surface of the lower floor. Item 6. The lifting device according to any one of items 1 to 5. A base position detecting means for detecting the position of the base with respect to the building;
The control means controls the drive means in response to an output signal from the base position detection means, whereby the lowest end surface of the car is a predetermined distance d1 from the bottom surface facing the lower side of the hoistway. The elevator apparatus according to any one of claims 1 to 6, wherein the car is stopped so as to be disposed at an upper position only. Further includes a riding part position detecting means for detecting the position of the riding part with respect to the building;
In response to the output signal from the mounting portion position detecting means, the control means determines that the mounting portion located near the lower floor has reached the standard position and the lower position, and drives the moving means. The lifting device according to any one of claims 1 to 7, wherein the lifting device is stopped.

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