Pulley alignment measurement tool and pulley alignment measurement method

Abstract

A measuring tool is provided that can easily measure the alignment of a driven pulley used in an opening and closing mechanism for opening and closing elevator doors from the landing side. The driven pulley is mounted on a flat portion of a mounting accessory that is fixed parallel to the back of the elevator door frame. The pulley alignment measuring tool includes: a main body having a base, a column, and a slot; the base having a bottom surface that contacts the flat portion of the mounting accessory on which the driven pulley is mounted; a base end of the column connected to the base; an end end of the column extending in a direction perpendicular to the bottom surface; and a slot penetrating the interior of the column in a direction perpendicular to the bottom surface; and a steel ruler that is slidably inserted into the slot, with its end protruding from the bottom surface and contacting the back surface.

Description

Technical Field

[0001] This disclosure relates to a technique for measuring the alignment of a driven pulley in an opening and closing mechanism for opening and closing elevator doors. Background Technology

[0002] Patent Document 1 discloses technology related to an elevator door device in which a belt wound around a pulley body is connected to the door body. This door device has the following structure: when the driven pulley tilts due to belt offset, a torque is generated using the steering principle of railway wheels to tilt the driven pulley in the opposite direction, thereby automatically adjusting the belt offset.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: International Publication No. 2016 / 030996 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] In elevator door maintenance and inspection, the alignment of the driven pulley is sometimes measured. The driven pulley's structure presents a challenge in ensuring sufficient working space from the landing side. While it's easier to measure pulley alignment by having personnel inside the elevator car, maintenance and inspection tasks such as belt tension checks performed from the landing side result in low efficiency. In Patent Document 1, no effective means is disclosed for measuring driven pulley alignment from the landing side.

[0008] This disclosure was made to solve the aforementioned problems, and its purpose is to provide a measuring tool that can easily measure the alignment of a driven pulley from the landing side, the driven pulley being used in an opening and closing mechanism for opening and closing elevator doors.

[0009] Methods for solving problems

[0010] This disclosure discloses a pulley alignment measuring tool for use in an opening and closing mechanism for opening and closing elevator doors. The driven pulley is mounted on a flat portion of a mounting accessory that is fixed parallel to the back of the elevator door frame. The pulley alignment measuring tool includes: a main body having a base, a column, and a slot; the base having a bottom surface that contacts the flat portion of the mounting accessory; the base end of the column being connected to the base; the end end of the column extending in a direction perpendicular to the bottom surface; and the slot penetrating the interior of the column in a direction perpendicular to the bottom surface; and a steel ruler having graduations on one side that slides freely into the slot, with the end of the steel ruler protruding from the bottom surface and contacting the back surface.

[0011] Furthermore, this disclosure describes a pulley alignment measurement method for measuring the alignment of the driven pulley from the landing side of an elevator using the aforementioned pulley alignment measuring tool. The pulley alignment measurement method includes: a first setting step, where the pulley alignment measuring tool is set from the landing side to a first position where the bottom surface of the base contacts the front side of the flat surface of the mounting accessory, and the steel ruler is positioned further outward than the left end of the flat surface; a first measurement step, where, at the first position, the steel ruler is slid until its end contacts the back of the door frame, and the value of the scale at the point where the steel ruler protrudes from the main body is measured from the landing side as a first distance; a second setting step, where the pulley alignment measuring tool is set from the landing side to the bottom surface of the base contact the front side of the flat surface of the mounting accessory, and the steel ruler is positioned further outward than the left end of the flat surface; a second measurement step, where, from the landing side... The station side sets the pulley alignment measuring tool to a second position where the bottom surface of the base part contacts the front side of the flat part of the mounting accessory, and the steel ruler is located further outward than the right end of the flat part; in the second measuring step, in the second position, the steel ruler is slid until the end of the steel ruler contacts the back of the door frame, and the value of the scale at the position where the steel ruler protrudes from the main body part is measured from the station side as the second distance; and in the evaluation step, the pulley alignment of the driven pulley is evaluated as being within the normal range based on whether the difference between the first distance measured in the first measuring step and the second distance measured in the second measuring step is below a predetermined reference value.

[0012] Invention Effects

[0013] According to the measuring tool disclosed herein, the alignment of the driven pulley used in the opening and closing mechanism that opens and closes the elevator door can be easily determined from the landing side. Attached Figure Description

[0014] Figure 1 This is a front view of the elevator door control device according to the embodiment.

[0015] Figure 2 This is a front view used to illustrate the structure of the pulley alignment measuring tool.

[0016] Figure 3 Observing from direction A Figure 2 The top view of the pulley alignment measuring tool shown.

[0017] Figure 4 Observing from direction B Figure 2 The side view of the pulley alignment measuring tool shown.

[0018] Figure 5 This diagram illustrates the first setup step of the pulley alignment measuring tool in an alignment measurement operation.

[0019] Figure 6 This diagram illustrates the first measurement step in an alignment measurement operation using a pulley alignment measurement tool.

[0020] Figure 7This diagram illustrates the first measurement step in an alignment measurement operation using a pulley alignment measurement tool.

[0021] Figure 8 This diagram illustrates the first measurement step in an alignment measurement operation using a pulley alignment measurement tool.

[0022] Figure 9 This is a diagram illustrating the second setting step of the pulley alignment measuring tool in an alignment measuring operation.

[0023] Figure 10 This figure shows an example of a modified driven pulley configuration using a pulley alignment measuring tool.

[0024] Figure 11 This is a diagram illustrating a modified example of a pulley alignment measuring tool. Detailed Implementation

[0025] Hereinafter, the embodiments will be described with reference to the accompanying drawings. Furthermore, common elements in all figures will be labeled with the same reference numerals, and repeated descriptions will be omitted.

[0026] Implementation method.

[0027] 1-1. Structure of the elevator door device according to the embodiment

[0028] Figure 1 This is a front view of the elevator door control device according to the embodiment. The elevator shaft is formed to run through all floors of the building. At each floor, a landing is formed near the shaft. A passenger car is installed in the shaft. A landing entrance / exit is formed between each landing and the shaft. A landing door is provided at each landing entrance / exit. A car entrance / exit is formed on the landing side of the passenger car. A door device 1 is provided at the car entrance / exit. The door device 1 has a door 2 and an opening / closing mechanism 3 for opening and closing the door 2.

[0029] Door 2 is configured to open and close the car entrance / exit. Typically, doors 2 are arranged in pairs to open in the center. As another example, doors 2 may also be configured to open from one side.

[0030] A door frame 5 is fixed to the upper part of the car entrance / exit. Various components of the opening / closing mechanism 3 are installed on the door frame. The opening / closing mechanism 3 has a main structure comprising a suspension component 6, a suspension roller 7, a track 8, a drive pulley 9, a driven pulley 10, a belt 11, a connecting component 12, and a door motor 13. The suspension component 6 is fixed to the upper part of the door 2. The suspension roller 7 is located above the suspension component 6. The track 8 is located above the door 2 on the door frame 5. A drive pulley 9 is located at one end of the door frame 5 along its length. Additionally, a door motor 13 is installed on the door frame 5 to rotate the drive pulley 9.

[0031] On the other end of the door frame 5 along its length, a driven pulley 10 is provided using a mounting fitting 14. The mounting fitting 14 is a fitting for mounting the driven pulley 10 onto the door frame 5. The driven pulley 10 is rotatably fixed to the back side of the flat surface 141 with its rotation axis perpendicular to the flat surface 141. The mounting fitting 14 is fixed at a position parallel to the flat surface 141 relative to the back surface 51 of the door frame 5, separated by a predetermined gap. Thus, the rotation axis of the driven pulley 10 is perpendicular to the back surface 51 of the door frame 5.

[0032] The belt 11 is arranged to surround the drive pulley 9 and the driven pulley 10. One end of one connecting member 12 is fixed to the upper portion of the belt 11. The other end of one connecting member 12 is fixed to one side of the suspension member 6. One end of the other connecting member 12 is fixed to the lower portion of the belt 11. The other end of the other connecting member 12 is fixed to the other side of the suspension member 6.

[0033] In such an elevator, when the passenger car is positioned adjacent to a landing, a portion of the passenger car door 2 engages with a portion of the landing door. In this state, the door motor 13 is driven. This drive rotates the drive pulley 9 and the driven pulley 10. This rotation moves the belt 11. At this time, the upper side of the belt 11 moves to the left or right. Conversely, the lower side of the belt 11 moves to the left or right in the opposite direction.

[0034] As this movement occurs, the connecting parts 12 move in opposite directions. Simultaneously, the suspension parts 6 move in opposite directions. Also, the doors 2 move in opposite directions. At this time, the suspension rollers 7 travel on the track 8. Therefore, the doors 2 smoothly open and close the car entrance / exit. Along with this opening and closing, a pair of landing doors move in opposite directions. Through this movement, the landing doors open and close the landing entrance / exit.

[0035] 2. Structure of the pulley alignment measuring tool according to the embodiment

[0036] During elevator maintenance work performed by operators, the alignment of the driven pulley 10 is sometimes measured. Measuring the alignment of the driven pulley 10 is difficult to ensure sufficient working space from the landing side, potentially leading to reduced work efficiency and increased workload for operators.

[0037] The pulley alignment measuring tool of this embodiment is a measuring tool used when performing pulley alignment measurement operations from the layer station side. Figure 2 This is a front view used to illustrate the structure of the pulley alignment measuring tool. Figure 3 Observing from direction A Figure 2 The top view of the pulley alignment measuring tool shown. Figure 4 Observing from direction B Figure 2The diagram shows a side view of the pulley alignment measuring tool. The pulley alignment measuring tool 100 shown in these figures includes a main body 20 and a steel ruler 40.

[0038] The main body 20 is an L-shaped structure having a base portion 22 and a column portion 24 extending in a direction perpendicular to the base portion 22. The base portion 22 is prism-shaped with the X direction in the figure as its length direction. The bottom surface 221 of the base portion 22 is a plane that contacts the object being measured. In addition, two recesses are formed along the length direction on the upper surface of the base portion 22, and prism-shaped magnetic bodies 26 are embedded in these recesses respectively. The magnetic bodies 26 are used to attract the object being measured by attraction, thereby causing the bottom surface 221 to be magnetically adsorbed onto the object being measured.

[0039] The column portion 24 is a prism structure whose base end is connected to one end of the base portion 22 along its length, and whose end extends in the Z direction as shown in the figure. The width dimension of the column portion 24 in the Y direction is the same as the width dimension of the base portion 22. A slot 30 is formed in the column portion 24, penetrating the interior in a direction perpendicular to the bottom surface 221 of the base portion 22. The Y direction of the slot 30 is the length direction of the slot, and it is set to a size that allows a steel ruler 40 to be inserted.

[0040] The steel ruler 40 is a steel ruler. The steel ruler 40 slides freely into the slot 30 with the graduated side facing the -X direction and the zero point side facing the -Z direction. Furthermore, in the column portion 24, a recess is formed along the slot 30 from the upper surface side near the slot 30, and a prism-shaped magnetic body 28 is embedded in this recess. The magnetic body 28 is used to attract the steel ruler 40 by gravity, thereby maintaining the position of the steel ruler 40.

[0041] Furthermore, a column-side cut-off portion 32 is formed on the upper surface of the column portion 24, which is oriented toward the scale of the steel ruler 40. The column-side cut-off portion 32 is used to facilitate reading the scale of the steel ruler 40.

[0042] 3. Method for determining the alignment of driven pulleys using a pulley alignment measuring tool

[0043] During the alignment measurement operation, the distance between the flat portion 141 and the back surface 51 of the door frame 5 is measured at the left and right ends of the mounting accessory 14 on which the driven pulley 10 is installed. The alignment is checked to determine if the difference in this distance is within a specified range. The alignment measurement operation is performed from the elevator landing side using the pulley alignment measurement tool 100. The steps for the alignment measurement operation of the driven pulley 10 using the pulley alignment measurement tool 100 will be described in detail below.

[0044] 3-1. First setting procedure for the pulley alignment measuring tool

[0045] Figure 5This diagram illustrates the first setting step of the pulley alignment measuring tool in an alignment measurement operation. In this first setting step, the operator reaches their hand from the elevator landing side to the mounting fitting 14 to set the pulley alignment measuring tool 100. Specifically, the operator positions the pulley alignment measuring tool 100 in a first position where the bottom surface 221 of the base portion 22 contacts the front side of the flat portion 141 of the mounting fitting 14, and the steel ruler 40 is positioned outward from the left end 142 of the flat portion 141. As a result, the pulley alignment measuring tool 100 is magnetically attracted to the flat portion 141 by the attraction of the magnetic body 26.

[0046] 3-2. First Measurement Procedure

[0047] Figure 6 , Figure 7 as well as Figure 8 This diagram illustrates the first measurement step in an alignment measurement operation using a pulley alignment measuring tool. In this first measurement step, the operator slides a steel ruler 40 until the end of the steel ruler 40, inserted into the main body 20 at the first position, contacts the back surface 51 of the door frame 5. Next, the operator removes the pulley alignment measuring tool 100 from the flat surface 141 and reads the scale at the position where the steel ruler 40 protrudes from the bottom surface 221. Thus, the first distance H1 between the left end 142 of the flat surface 141 and the back surface 51 of the door frame 5 is measured by the pulley alignment measuring tool 100.

[0048] 3-3. Second setting procedure for the pulley alignment measuring tool

[0049] Figure 9 This diagram illustrates the second setting step of the pulley alignment measuring tool in the alignment measurement operation. In the second setting step, the operator, similar to the first setting step, reaches their hand from the elevator landing side to the mounting accessory 14 to set the pulley alignment measuring tool 100. Specifically, the operator positions the pulley alignment measuring tool 100 in a second position where the bottom surface 221 of the base portion 22 contacts the front side of the flat surface portion 141 of the mounting accessory 14, and the steel ruler 40 is positioned further outward than the right end 143 of the flat surface portion 141. As a result, the pulley alignment measuring tool 100 is magnetically attracted to the flat surface portion 141 by the attraction of the magnetic body 26.

[0050] 3-4. Second Measurement Procedure

[0051] In the second measurement step, the operator slides the steel ruler 40 using the same procedure as in the first measurement step until the end of the steel ruler 40 inserted into the main body 20 at the second position contacts the back surface 51 of the door frame 5. Next, the operator aligns the pulley with the measuring tool 100 and removes it from the flat surface 141, reading the scale at the position where the steel ruler 40 protrudes from the bottom surface 221. This measures the second distance H2 between the right end 143 of the flat surface 141 and the back surface 51 of the door frame 5.

[0052] 3-5. Alignment and evaluation process

[0053] The operator determines whether the difference ΔH between the first distance H1 measured in the first measurement process and the second distance H2 measured in the second measurement process is below a predetermined reference value R. Here, the reference value R is, for example, 0.5 mm. As a result, if ΔH ≤ R, the pulley alignment is evaluated as being within the normal range; if ΔH > R, the pulley alignment is evaluated as being within the abnormal range.

[0054] 4. Function and effect of the pulley alignment measuring tool

[0055] The following effects and results can be obtained using the pulley alignment measuring tool described above.

[0056] By using the pulley alignment measuring tool 100, operators can determine the alignment of the pulleys from the elevator landing side. This improves the efficiency of maintenance and inspection work.

[0057] The pulley alignment measuring tool 100 is equipped with a magnetic body 26. As a result, the bottom surface 221 of the pulley alignment measuring tool 100 can be magnetically attached to the flat surface 141, thereby improving the work efficiency during measurement.

[0058] The pulley alignment measuring tool 100 is equipped with a magnetic body 28. This allows for the suppression of positional deviation of the steel ruler 40 inserted in the main body 20.

[0059] 5. Variations

[0060] The pulley alignment measuring tool 100 of this embodiment can also be modified in the following way.

[0061] 5-1. Magnetic body 26

[0062] The magnetic body 26 can be made of any material, shape, and in any quantity, within the range that allows it to exert an attractive force that magnetically attracts the bottom surface 221 of the pulley alignment measuring tool 100 to the flat surface 141. Furthermore, if the operator is holding the pulley alignment measuring tool 100 by hand while performing the operation, the magnetic body 26 is not a necessary structure in the pulley alignment measuring tool 100.

[0063] 5-2. Magnetic body 28

[0064] The magnetic body 28 can be made of any material, shape, and quantity within a range that prevents the steel ruler 40 inserted into the main body 20 of the pulley alignment measuring tool 100 from shifting due to its own weight, and allows the operator to slide the steel ruler 40. Furthermore, if the slot 30 is designed to engage with the steel ruler 40 in such a way that the steel ruler 40 inserted into the main body 20 does not shift due to its own weight, the magnetic body 28 is not a necessary structure in the pulley alignment measuring tool 100.

[0065] 5-3. Measurement Procedure

[0066] In the first and second measurement steps, the operator removes the pulley from the measuring tool 100 from the flat surface 141 and reads the scale. However, if the scale can be read while the pulley is magnetically attached to the flat surface 141, removing the pulley from the flat surface 141 is not necessary. Furthermore, if the scale on the steel ruler 40 protruding from the end face of the column 24 can be visually confirmed while the pulley is magnetically attached to the flat surface 141, the value of that scale can also be used. In this case, the column side cut-off portion 32 helps improve the visibility of the scale. Moreover, the column side cut-off portion 32 is not a necessary structure.

[0067] 5-4. The configuration structure of the driven pulley 10

[0068] The pulley alignment measuring tool 100 can also be used for elevators in which the driven pulley 10 is fixed on the front side of the flat part 141. Figure 10 This figure shows an example of a modified driven pulley configuration that utilizes a pulley alignment measuring tool. As shown in the figure, during the measuring process, the operator can measure the first distance H1 and the second distance H2 using the area on the front side of the flat portion 141 that does not contact the driven pulley 10.

[0069] 5-4. Base section 22

[0070] Figure 11 This is a diagram illustrating a modified example of the pulley alignment measuring tool. As shown in the diagram, the base portion 22 may also have a base portion side cutout 222 cut out at the corner of the bottom surface 221 in the direction of the scale on the steel ruler 40. According to the base portion side cutout 222, when the pulley alignment measuring tool 100 is magnetically attached to the flat surface portion 141, the visibility of the scale on the steel ruler 40 can be improved.

[0071] Label Explanation

[0072] 1: Door device; 2: Door; 3: Opening and closing mechanism; 5: Door frame; 6: Suspension component; 7: Suspension roller; 8: Track; 9: Drive pulley; 10: Driven pulley; 11: Belt; 12: Connecting component; 13: Door motor; 14: Mounting accessory; 20: Main body; 22: Base; 24: Column; 26: Magnetic body; 28: Magnetic body; 30: Slot; 32: Side cut-off part of column; 40: Steel ruler; 51: Back side; 100: Pulley alignment measuring tool; 141: Flat surface; 142: Left end; 143: Right end; 221: Bottom surface; 222: Side cut-off part of base.

Claims

1. A pulley alignment measuring tool, used in an opening and closing mechanism for opening and closing elevator doors, for measuring the alignment of a driven pulley. The driven pulley is mounted on the flat portion of a mounting accessory that is fixed in parallel to the back of the elevator door frame. The pulley alignment measuring tool includes: The main body includes a base portion, a column portion, and a slot. The base portion has a bottom surface that contacts the flat portion of the mounting accessory. The base end of the column portion is connected to the base portion, and the end end of the column portion extends in a direction perpendicular to the bottom surface. The slot penetrates the interior of the column portion, and its penetration direction is perpendicular to the bottom surface. A steel ruler, having graduations on one side, is slidably inserted into the slot, with one end of the ruler protruding from the bottom surface and contacting the back surface.

2. The pulley alignment measuring tool according to claim 1, wherein, The base portion includes a magnetic body for magnetically adsorbing the bottom surface onto the planar portion.

3. The pulley alignment measuring tool according to claim 1 or 2, wherein, The column portion has a magnetic element for maintaining the position of the steel ruler.

4. The pulley alignment measuring tool according to any one of claims 1 to 3, wherein, The column portion has a column-side cut-off portion at the corner of its end side, which is cut in the direction toward the scale of the steel ruler.

5. The pulley alignment measuring tool according to any one of claims 1 to 4, wherein, The base portion has a base portion side cut-off portion cut out at the corner of the bottom surface in the direction of the scale of the steel ruler.

6. A method for determining pulley alignment, comprising using the pulley alignment measuring tool according to any one of claims 1 to 5, to determine the pulley alignment of the driven pulley from the landing side of the elevator, wherein, The pulley alignment measurement method includes: In the first setting step, the pulley is aligned with the measuring tool and set to a first position where the bottom surface of the base part contacts the front side of the flat part of the mounting accessory, and the steel ruler is located outside the left end of the flat part; In the first measurement step, at the first position, the steel ruler is slid until the end of the steel ruler contacts the back of the door frame, and the value of the scale at the position where the steel ruler protrudes from the main body is measured from the floor side as the first distance; In the second setting step, the pulley is aligned with the measuring tool and set to a second position where the bottom surface of the base part contacts the front side of the flat part of the mounting accessory, and the steel ruler is located outside the right end of the flat part from the floor station side. In the second measurement step, at the second position, the steel ruler is slid until its end contacts the back of the door frame, and the value of the scale at the point where the steel ruler protrudes from the main body is measured from the landing side as a second distance; and The evaluation process assesses whether the alignment of the driven pulley is within the normal range based on whether the difference between the first distance measured in the first measurement process and the second distance measured in the second measurement process is below a predetermined reference value.

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