Elevator

Abstract

To provide an elevator that does not require jigs when measuring the travel distance of a car.SOLUTION: An elevator comprises: a car that moves vertically within a hoistway; and a landing door 201 that opens and closes a landing entrance / exit connecting the hoistway and a landing. The car has a car body, a car door 28, an apron 29, and at least one of an apron-side indicator 41 and a car-side indicator 42. The car body has a car entrance / exit facing the landing entrance / exit. The car door 28 opens and closes the car entrance / exit. The apron 29 is located below the car door 28. The landing door 201 has a window section 202 facing the apron-side indicator 41 and the car-side indicator 42.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an elevator. [Background technology]

[0002] In recent years, there has been an increasing demand for elevators equipped with door-open running protection devices that prevent the car from running with the doors open. The door-open running protection device stops the car from ascending or descending before the car doors and landing doors close. In elevators equipped with door-open running protection devices, workers inspect the device to ensure that there are no problems with its performance.

[0003] On the other hand, if the car shifts upward from the landing and stops, a gap that connects to the elevator shaft will be created between the car and the floor of the landing.Therefore, elevators are known that have a plate-shaped apron (toe protection plate) hanging down from the front end of the car sill to close the gap that occurs between the car and the floor of the landing (see Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-107768 Summary of the Invention [Problem to be solved by the invention]

[0005] One method of testing a door-open running protection device involves opening the platform door while the car is ascending or descending, and measuring the distance traveled by the car before it stops. In such testing, for example, the amount of deviation between the floor of the car and the floor of the platform is sometimes measured as the distance traveled by the car. In this case, a jig is required to measure the amount of deviation between the floor of the car and the floor of the platform.

[0006] SUMMARY OF THE INVENTION In consideration of the above problems, an object of the present invention is to provide an elevator that does not require a jig when measuring the moving distance of the elevator car. [Means for solving the problem]

[0007] In order to solve the above problems and achieve the object of the present invention, an elevator embodying one aspect of the present invention includes a car that moves up and down in a hoistway, and a landing door that opens and closes a landing entrance that connects the hoistway to the landing. The car has a car body, car doors, an apron, and a scale. The car body has a car entrance facing the landing entrance. The car doors open and close the car entrance. The apron is located below the car doors. The scale is formed on at least one of the apron and the car door. The landing door has a window portion facing the scale. [Effects of the Invention]

[0008] According to the elevator having the above configuration, the moving distance of the elevator car can be measured without using a jig. Problems, configurations, and effects other than those described above will become clear from the following description of the embodiments. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a schematic configuration diagram of an elevator according to a first embodiment. [Figure 2] 1 is a perspective view showing the configuration of a passenger car according to a first embodiment. FIG. [Figure 3] FIG. 2 is a front view of the landing door according to the first embodiment. [Figure 4] FIG. 2 is a front view of a window portion according to the first embodiment. [Figure 5] FIG. 10 is a perspective view showing the configuration of a passenger car according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] 1. First embodiment An elevator according to a first embodiment will be described below with reference to Figures 1 to 4. Note that common parts in each figure are given the same reference numerals.

[0011] [Elevator configuration] First, the configuration of the elevator according to the first embodiment will be described with reference to FIG. FIG. 1 is a schematic configuration diagram of an elevator according to a first embodiment.

[0012] As shown in Figure 1, elevator 1 is installed in a hoistway 110 formed within a building structure. Hoistway 110 passes vertically through each floor of the building structure. Elevator 1 includes a car 120, a main rope 130, a counterweight 140, a hoisting machine 100, and a control panel 190.

[0013] A machine room 160 is provided at the top of the elevator shaft 110. The hoisting machine 100 is arranged in the machine room 160. A main rope 130 is wound around the hoisting machine 100. The hoisting machine 100 is a device that winds up the main rope 130 to raise and lower the car 120. A deflector sheave 150 is arranged near the hoisting machine 100. The main rope 130 is mounted on the deflector sheave 150.

[0014] The car 120 carries people and luggage. The car 120 is connected to a counterweight 140 via a main rope 130. When the hoist 100 winds up the main rope 130, the car 120 and the counterweight 140 rise and fall in opposite directions.

[0015] The control panel 190 is installed, for example, in the machine room 160. The control panel 190 controls the operation of the elevator 1. For example, the control panel 190 controls the driving of the hoisting machine 100, the opening and closing of the car door 28 (see FIG. 2) of the car 120, etc.

[0016] A landing door 201 is installed at a landing on each floor of the building structure. The landing door 201 opens and closes the landing entrance that connects the elevator shaft 110 to the landing. The landing door at the landing on the first floor below the top floor has a window portion 202. The window portion 202 will be described later using FIG. 4.

[0017] The elevator 1 is equipped with a door-open running protection device (not shown). The door-open running protection device stops the car from ascending or descending before the car doors and the landing doors close.

[0018] The door-open running protection device includes, for example, a brake that stops the rotation of the hoisting machine 100, various detectors that detect the door-open running of the car 120, and a control circuit that operates the brake. The control circuit can control the operation of the brake independently of the control panel 190.

[0019] [Car configuration] Next, the configuration of the car 120 will be described with reference to FIG. FIG. 2 is a perspective view showing the configuration of the car 120. As shown in FIG.

[0020] In this embodiment, the front-back, up-down, and left-right directions are defined based on the line of sight of the elevator user facing the car 120. In this case, the near side as seen from the elevator user is the front, the far side is the rear, the upper side is the top, the lower side is the bottom, the left side is the left, and the right side is the right.

[0021] As shown in Fig. 2, the passenger car 120 includes a car chamber 20, a car door 28, and an apron 29. The car chamber 20 is formed in a hollow, approximately rectangular parallelepiped shape. The car chamber 20 has a ceiling portion 21, a floor portion 22, side plate portions 24, a front plate portion 26, and a rear plate portion (not shown).

[0022] A car threshold (not shown) is attached to the front end of the floor 22. The side plate portions 24 are arranged in pairs in the left-right direction. The front plate portion 26 is formed with an entrance / exit for people and luggage to enter and exit. The car door 28 opens and closes the entrance / exit to the car chamber 20. The car door 28 in this embodiment is a double-hinged door. However, the car door according to the present invention may also be a single-hinged door.

[0023] The apron 29 is a metal plate-shaped member having a flat surface that is approximately perpendicular to the front-to-rear direction. The apron 29 is attached to the floor 22. The apron 29 is fixed to the car sill with rivets or the like. The width of the apron 29 is set to be approximately the same length as the overall width of the entrance formed when the car doors 28 are fully opened.

[0024] A car frame 30 is arranged around the car chamber 20. The car frame 30 is formed into a rectangular frame shape from the front-to-rear direction. The car frame 30 has an upper frame 31 arranged at the top of the car chamber 20, a lower frame (not shown) arranged at the bottom of the car chamber 20, and a pair of vertical frames 32 arranged on the left and right sides of the car chamber 20.

[0025] The car frame 30 has four rail gripping portions 35 (the lower one is not shown). The four rail gripping portions 35 are arranged at the four corners of the car frame 30. A car guide rail (not shown) that guides the car 120 as it rises and falls is installed in the elevator shaft 110 (see FIG. 1). The four rail gripping portions 35 slidably engage with the car guide rail.

[0026] Apron-side scales 41 are formed on the apron 29. The apron-side scales 41 are attached to a flat surface facing the front of the apron 29 (the side of the landing door 201 (see FIG. 1)). The apron-side scales 41 are arranged at predetermined intervals in the vertical direction. The apron-side scales 41 face the window portions 202 (see FIG. 1) formed in the landing door 201 in the front-rear direction.

[0027] Door-side scales 42 are formed on the car door 28. The door-side scales 42 are attached to a flat surface facing the front of the car door 28 (the landing door 201 side). The door-side scales 42 are arranged at predetermined intervals in the vertical direction. The door-side scales 42 face the window portions 202 formed in the landing door 201 in the front-rear direction.

[0028] In the car 120, the left-right position of the door-side scale 42 is the same as the left-right position of the apron-side scale 41. The door-side scale 42 is located above the apron-side scale 41. As a result, the apron-side scale 41 and the door-side scale 42 form a single ruler that extends in the vertical direction.

[0029] The door-side scale 42 has a reference scale 42a marked with zero. On the apron-side scale 41 and the door-side scale 42, negative numbers are written on the scales above the reference scale 42a, and positive numbers are written on the scales below the reference scale 42a.

[0030] [Window configuration] Next, the configuration of the window portion 202 formed in the hall door 201 will be described with reference to FIGS. 3 is a front view of the landing door 201 at the landing one floor below the top floor. FIG. 4 is a front view of the window portion 202.

[0031] A reinforcement (not shown) is fixed to the landing door 201. When a brace is used, the reinforcement of the landing door 201 extends along a diagonal line. Therefore, the window portion 202 is formed in a position that does not interfere with the reinforcement of the landing door 201. As shown in FIG. 3 , the window portion 202 is located approximately in the center of the landing door 201 in the left-right direction and at the bottom in the up-down direction.

[0032] The apron-side scale 41 and the door-side scale 42 described above are visible through the window 202. This allows an inspector to measure the door-open traveling distance of the car 120 without using a measuring jig when inspecting the door-open traveling protection device. The door-open traveling distance is the distance traveled by the car 120 from when the landing door 201 is opened until the car 120 stops.

[0033] Note that a position that does not interfere with the reinforcement of the landing door 201 is, for example, approximately the center of the landing door 201 in the left-right direction and the top in the up-down direction. However, if the window portion is formed in the top of the landing door 201, an inspector may not be able to look into the window portion unless he or she uses a step stool such as a stepladder. Also, if the window portion is formed in the top of the landing door 201, when the elevator car 120 descends toward the landing, the door-side scale 42 may not be large enough to measure the door-open travel distance of the elevator car 120.

[0034] On the other hand, in this embodiment, a window 202 is formed at the bottom of the landing door 201. This allows the inspector to look through the window 202 without using a step stool such as a stepladder. Furthermore, whether the car 120 ascends or descends relative to the landing, there is no need to worry about the apron-side scale 41 or the door-side scale 42 becoming insufficient. Therefore, the door-open travel distance of the car 120 can be reliably measured.

[0035] The car 120 is connected to a counterweight 140 via a main rope 130. Therefore, the braking distance of the ascending car 120 generally becomes longer as it approaches the top floor. The braking distance is the distance the car 120 ascends or descends from when the brake is activated until the car 120 stops. The inspection of the door-open running protection device is carried out at a location where the braking distance is long. This allows the performance of the door-open running protection device to be inspected accurately.

[0036] If the inspection of the door-open running protection device is carried out on the top floor, there is a risk that the car 120 may interfere with the top of the elevator shaft 110 (the floor of the machine room) or with equipment arranged at the top of the elevator shaft 110. Therefore, it is preferable to carry out the inspection of the door-open running protection device at a landing one floor below the top floor. As described above, the window portion 202 is formed in the landing door 201 at the landing one floor below the top floor.

[0037] As shown in FIG. 4, the window portion 202 has an opening 211 formed in the landing door 201 and a cover 212 that covers the opening 211. In addition, a lid (not shown) that covers the window portion 202 is attached to the landing door 201. The lid is slidably or detachably attached to the landing door 201. When performing an inspection, an inspector shifts the lid to expose the window portion 202. The lid can prevent the window portion 202 (cover 212) from being damaged when passengers' feet, luggage, or the like collide with the window portion 202.

[0038] The opening 211 is formed in a rectangular shape. Note that the shape of the opening (window) according to the present invention is not limited to a rectangular shape and can be set to any shape. The cover 212 is formed from transparent or translucent resin or glass. This prevents the inspector from directly touching the car 120 (see FIG. 1) through the window 202. This ensures the safety of the inspector. Furthermore, the inspector can visually check the apron-side scale 41 and door-side scale 42 of the car 120 through the cover 212.

[0039] A measurement line 213 is formed on the cover 212. Inspectors can easily measure the travel distance with the door open by reading the scales 41, 42 that coincide with the measurement line 213. When the floor surface of the car 120 is at approximately the same height as the floor surface of the landing one floor below the top floor, the reference scale 42a (see FIG. 2) coincides with the measurement line 213. This allows inspectors to easily measure the travel distance with the door open and the amount of deviation between the floor surface of the car 120 and the floor surface of the landing.

[0040] Additionally, the apron-side scale 41 and the door-side scale 42 are marked with positive and negative values. This allows the inspector to easily determine whether the floor surface of the car 120 is higher or lower than the floor surface of the landing. For example, if the values ​​of the scales 41, 42 that coincide with the measurement line 213 are positive, the floor surface of the car 120 is located above the floor surface of the landing. Also, if the values ​​of the scales 41, 42 that coincide with the measurement line 213 are negative, the floor surface of the car 120 is located below the floor surface of the landing.

[0041] [Inspection of door-open running protection device] Next, inspection of the door-open running protection device will be described with reference to FIGS.

[0042] In one inspection of the door-open running protection device, first, an inspector controls the control panel 190 to raise the car 120. Then, when the car 120 reaches a predetermined position near the landing below the first floor from the top floor, the inspector uses a special tool to open the landing door 201 to a predetermined distance. As a result, the door-open running protection device detects that the door is open and stops the car 120 from rising.

[0043] Next, the inspector closes the landing door 201. Then, the inspector visually checks the values ​​on the scales 41, 42 through the window 202 and measures the door-open travel distance of the car 120. This allows the inspector to measure the door-open travel distance of the car 120 while ensuring safety. For example, if the floor surface of the car 120 is set at a predetermined position at approximately the same height as the floor surface of the landing one floor below the top floor, the door-open travel distance of the car 120 can be made the same as the amount of deviation between the floor surface of the car 120 and the floor surface of the landing.

[0044] 2. Second embodiment Next, an elevator according to a second embodiment will be described. The elevator according to the second embodiment differs from the elevator according to the first embodiment in the car 120B. Therefore, here, only the car 120B according to the second embodiment will be described, and a description of the configuration overlapping with the first embodiment will be omitted.

[0045] [Car configuration] The configuration of the car 120B will be described with reference to FIG. FIG. 5 is a perspective view showing the configuration of the car 120B.

[0046] In this embodiment, the front-back, up-down, left-right directions are defined based on the line of sight of the elevator user facing the car 120B. In this case, the near side as seen from the elevator user is the front direction, the far side is the rear direction, the upper side is the upper side, the lower side is the lower side, the left side is the left side, and the right side is the right side.

[0047] 5, the passenger car 120B includes a car chamber 20, a car door 28, and an apron 29. The car chamber 20, the car door 28, and the apron 29 are the same as those in the first embodiment.

[0048] Apron side scales 43 are formed on the apron 29. The apron side scales 43 are attached to a flat surface facing the front of the apron 29 (the side of the landing door 201 (see FIG. 1)). The apron side scales 43 are formed in a strip shape that is long in the vertical direction. The apron side scales 43 face the window portions 202 (see FIG. 1) formed in the landing door 201 in the front-rear direction.

[0049] A door-side scale 44 is formed on the car door 28. The door-side scale 44 is attached to a flat surface facing the front of the car door 28 (the landing door 201 side). The door-side scale 44 is formed in a strip shape that is long in the vertical direction. The door-side scale 44 faces a window portion 202 formed in the landing door 201 in the front-rear direction.

[0050] In the car 120, the left-right position of the door-side scale 44 is the same as the left-right position of the apron-side scale 43. The door-side scale 44 is located above the apron-side scale 43. As a result, the apron-side scale 43 and the door-side scale 44 form a single continuous band-shaped scale extending in the vertical direction.

[0051] The apron-side scale 43 and the door-side scale 44 can be used to check whether the moving distance of the car 120B is within a specific distance. An example of an inspection that requires checking whether the ascending and descending movement of the car 120B is within a specific distance is an inspection to check whether the braking distance when braking is equal to or less than a predetermined distance.

[0052] Conventionally, before measuring the braking distance, a tachometer is installed on the hoist, and the braking distance is calculated from the detection result of the tachometer. However, the elevator of the second embodiment can confirm that the braking distance is equal to or less than a predetermined distance without installing a tachometer on the hoist. In other words, if the measurement line 213 faces the apron-side scale 43 and the door-side scale 44, it can be confirmed that the braking distance is equal to or less than the predetermined distance. Note that the elevator of the first embodiment can also measure the braking distance without installing a tachometer on the hoist.

[0053] [Other tests] Next, an explanation will be given of an inspection that can be performed using the window portion 202, the apron-side scales 41 and 43, and the door-side scales 42 and 44 of the above-described embodiment.

[0054] (Inspection of floor alignment correction devices) For example, there is an elevator equipped with a floor alignment correction device. The floor alignment correction device corrects the stopping position of the car 120B when the amount of deviation between the floor surface of the car 120B and the floor surface of the landing is less than a specific distance (for example, 75 mm). In testing such a floor alignment correction device, the apron-side scale 43 and the door-side scale 44 can also be used.

[0055] In the inspection of the floor matching correction device, the amount of deviation between the floor surface of the car 120B and the floor surface of the landing is set to a specific distance or less, and the floor matching correction device is activated. Then, an inspector visually confirms that the position of the car 120B has been corrected. Next, the amount of deviation between the floor surface of the car 120B and the floor surface of the landing is set to a distance greater than a specific distance, and the inspector visually confirms that the floor matching correction device does not operate (the car 120B does not move).

[0056] In conventional inspections of floor alignment correction devices, it was necessary to open the hall doors, measure the amount of misalignment between the car floor and the hall floor, and check whether the floor alignment correction device was operating or not. As a result, conventional inspections could not improve the safety of the inspection. In addition, conventional inspections required a jig to measure the amount of misalignment.

[0057] In the elevator according to the second embodiment, for example, the total length of the apron-side scale 43 and the door-side scale 44 is set to a specific distance. This allows the inspector to check whether the amount of misalignment between the floor surface of the car 120B and the floor surface of the landing is within a specific distance without opening the landing door 201. In addition, the inspector can check whether the floor alignment correction device is operating or not without opening the landing door 201. This increases the safety of the inspection.

[0058] In the elevator of the first embodiment, the floor alignment correction device can also be inspected without opening the landing door 201. In this case, the thickness of the markings that mark the boundary of a specific distance and the other markings may be changed in the apron-side scale 41 and the door-side scale 42 of the first embodiment. This allows the inspector to easily check whether the amount of deviation between the floor surface of the car 120 and the floor surface of the landing is within a specific distance without opening the landing door 201.

[0059] (Apron inspection) In the apron inspection, an inspector measures the length from the floor of the car to the bottom of the apron, and then determines whether the length from the floor of the car to the bottom of the apron is equal to or greater than a standard value (for example, 750 mm).

[0060] In the elevator of the first embodiment, an apron-side scale 41 is formed on the apron 29. Therefore, an inspector can measure the length from the floor of the elevator car to the bottom end of the apron without opening the hall door 201.

[0061] (Inspection of car landing position) The landing position is the position where the car stops at the platform. Inspectors measure the distance from the car's landing position to a reference position. Then, the inspectors determine whether the measured distance is within a reference range (for example, ±10 mm).

[0062] In the elevator of the first embodiment, the door-side scale 42 has a reference scale 42a. Therefore, an inspector can measure the distance from the landing position of the car 120 to the reference position without opening the hall door 201.

[0063] Furthermore, in the elevator of the second embodiment, for example, the total length of the apron-side scale 43 and the door-side scale 44 is set as the length of the reference range. Then, when the floor surface of the car 120B is at approximately the same height as the floor surface of the hall, the positions of the apron-side scale 43 and the door-side scale 44 are set so that the centers of the apron-side scale 43 and the door-side scale 44 coincide with the measurement line 213. This allows the inspector to determine whether the landing position of the car 120 is within the reference range (for example, ±10 mm) without opening the hall door 201.

[0064] The above describes embodiments of elevators, including their effects. However, the elevator of the present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the invention as defined in the claims. Furthermore, the above-described embodiments have been described in detail to clearly explain the present invention, and the elevator is not necessarily limited to an elevator having all of the described configurations.

[0065] In the first embodiment described above, the apron-side scale 41 and the door-side scale 42 form a ruler having one type of scale. However, the elevator according to the present invention may have multiple types of scales depending on the inspection. For example, the elevator according to the present invention may have a scale for measuring length (first embodiment) and a scale for indicating a normal range (second embodiment).

[0066] In the first and second embodiments described above, the elevator has apron-side scales 41 and 43 and door-side scales 42 and 44. This allows for a longer measurement range. However, the elevator according to the present invention may have at least one of the apron-side scale and the door-side scale. For example, when the elevator car 120 is raised to inspect the door-open running protection device, if the landing door 201 is opened at a predetermined timing, the apron 29 will face the window 202 when the elevator car 120 stops. In this case, the door-side scale is not used.

[0067] In the first and second embodiments described above, the apron-side scales 41, 43 are attached to the apron 29, and the door-side scales 42, 44 are attached to the car door 28. This allows the apron-side scales 41, 43 to be easily formed on the apron 29. Also, the door-side scales 42, 44 can be easily formed on the car door 28. However, the scales according to the present invention may be formed by processing the apron or the car door by laser processing or the like.

[0068] In the first and second embodiments described above, the window portion 202 is formed in the landing door 201 at the landing one floor below the top floor. However, the window portion according to the present invention may be formed in the landing door of any floor. Also, the window portion according to the present invention may be formed in the landing door of each floor.

[0069] The above-described embodiments have been described in detail to clearly explain the present invention, and are not necessarily limited to those including all of the described configurations. Furthermore, it is possible to replace part of the configuration of one embodiment with the configuration of another embodiment, or to add the configuration of another embodiment to the configuration of one embodiment. Furthermore, it is possible to add, delete, or replace part of the configuration of each embodiment with another configuration.

[0070] In this specification, the words "parallel" and "orthogonal" are used, but these do not mean only "parallel" and "orthogonal" in the strict sense, but also include "parallel" and "orthogonal" and may also mean a "substantially parallel" or "substantially orthogonal" state within a range in which the functions can be exerted. [Explanation of symbols]

[0071] 1...Elevator, 20...Cab, 21...Ceiling, 22...Floor, 24...Side panel, 26...Front panel, 28...Cab door, 29...Apron (toe protection plate), 30...Cab frame, 31...Upper frame, 32...Vertical frame, 35...Rail grip, 41, 43...Apron side scale, 42, 44...Door side scale, 42a...Reference scale, 100...Hoisting machine, 110...Hoistway, 130...Main rope, 140...Counterweight, 150...Bearing wheel, 160...Machine room, 190...Control panel, 201...Landing door, 202...Window, 211...Opening, 212...Cover, 213...Measurement line

Claims

1. An elevator comprising: a car that moves up and down in a hoistway; and a hall door that opens and closes a hall entrance that connects the hoistway and the hall, the elevator car includes a car body having a car entrance facing the landing entrance, a car door that opens and closes the car entrance, an apron located below the car door, and a scale formed on at least one of the apron and the car door, The landing door has a window portion facing the scale. Elevator.

2. The scales are arranged at predetermined intervals in the vertical direction. The elevator of claim 1.

3. The scale is formed in a long strip shape in the vertical direction. The elevator of claim 1.

4. The scale is formed on at least one of the apron and the car door. The elevator of claim 1.

5. The window portion is formed in a landing door at a landing below the first floor from the top floor. The elevator of claim 1.

6. Further provided is a cover for closing the window portion. The elevator of claim 1.

7. The window portion is an opening formed in the landing door; a transparent or translucent cover that closes the opening. The elevator of claim 1.

8. The cover has a measurement line formed thereon.

8. The elevator according to claim 7.

9. The scale is arranged at predetermined intervals in the vertical direction and has a reference scale with zero markings, When the floor surface of the car is at approximately the same height as the floor surface of the landing, the reference scale coincides with the measurement line.

9. The elevator according to claim 8.

10. the scale comprises an apron-side scale formed on the apron and a door-side scale formed on the car door, In the car, the left-right position of the door-side scale is the same as the left-right position of the apron-side scale. The elevator of claim 1.

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