Measuring device and method for measuring brake torque

Abstract

To provide a measuring device capable of quantitatively measuring the brake torque of an escalator and a method for measuring the brake torque.SOLUTION: A measuring device for measuring the brake torque of an escalator includes a fixed part that is fixed to the flywheel of a driving machine of the escalator, and a measuring part that measures the value of a force applied to the fixed part in a first direction and applied to the flywheel so as to rotate the driving machine in one of the UP and DOWN directions.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a measurement device and a method for measuring brake torque. [Background technology]

[0002] Patent Document 1 discloses a method for determining brake torque. According to this method, the driving machine is operated with a specified torque while the escalator remains in a braking state. If it is detected that the driving machine is not rotating, it is determined that a brake torque equal to or greater than a specified value is occurring. In other words, it can be determined that the escalator brake is in a normal state. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 03-106793 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the determination method described in Patent Document 1 only determines whether or not a brake torque equal to or greater than a specified value is generated, and therefore the value of the brake torque cannot be accurately determined.

[0005] The present disclosure has been made to solve the above-mentioned problems, and an object of the present disclosure is to provide a measuring device and a measuring method for brake torque that can quantitatively measure the brake torque of an escalator. [Means for solving the problem]

[0006] The measuring device according to the present disclosure is a device for measuring the braking torque of an escalator, and includes a fixed part fixed to the flywheel of the driving machine of the escalator, and a measuring part that measures the value of a force in a first direction applied to the fixed part, the force being applied to the flywheel so as to rotate the driving machine in one of the UP and DOWN directions.

[0007] The brake torque measurement method of the present disclosure is a method for measuring the brake torque of an escalator, and includes a fixing step of fixing a fixed part of a measuring device to a flywheel of an escalator driving machine, and a first rotation step, which is performed after the fixing step, of applying a force in a first direction to the flywheel via the fixed part so that the driving machine rotates in one of the UP direction and the DOWN direction, and having the measuring part of the measuring device measure the force in the first direction applied to the fixed part. [Effects of the Invention]

[0008] According to the present disclosure, the measurement unit measures the value of the force applied to the flywheel to rotate the driving machine, thereby enabling quantitative measurement of the braking torque of the escalator. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a schematic diagram of an escalator to which a measuring device according to a first embodiment is applied. [Figure 2] 1 is a side view of a driving machine of an escalator to which a measuring device according to a first embodiment is applied. [Figure 3] 1 is a side view of a measuring device and a driving machine according to the first embodiment. [Figure 4] 4 is a flowchart for explaining an outline of a method for measuring brake torque in the first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] The embodiments of the present disclosure will be described with reference to the accompanying drawings. In each drawing, the same or corresponding parts are designated by the same reference numerals. Duplicate descriptions of these parts will be appropriately simplified or omitted.

[0011] Embodiment 1 Fig. 1 is a schematic diagram of an escalator to which the measuring device according to embodiment 1 is applied. Fig. 2 is a side view of the driving machine of the escalator to which the measuring device according to embodiment 1 is applied. Fig. 3 is a side view of the measuring device and driving machine according to embodiment 1.

[0012] FIG. 1 shows an escalator 1. The escalator 1 is installed between an upper floor and a lower floor of a building (not shown). The escalator 1 transports passengers between the upper and lower floors. The escalator 1 includes a first entrance / exit 2a, a second entrance / exit 2b, a main frame 3, a plurality of steps 4, a step sprocket 5, a step chain 6, and a driver 7.

[0013] The first entrance / exit 2a is provided on an upper floor of the building. The second entrance / exit 2b is provided on a lower floor of the building. Passengers use the escalator 1 by passing through the first entrance / exit 2a and the second entrance / exit 2b. The main frame 3 spans between the first entrance / exit 2a and the second entrance / exit 2b. The main frame 3 has a machine room 3a at its upper end. The machine room 3a is provided below the first entrance / exit 2a. The multiple steps 4 are all connected in an endless manner. The multiple steps 4 are arranged between the first entrance / exit 2a and the second entrance / exit 2b. The step sprocket 5 is provided in the machine room 3a. The step chain 6 is an endless chain. The step chain 6 connects the multiple steps 4. A portion of the step chain 6 is wound around the step sprocket 5.

[0014] The driving machine 7 drives the step sprocket 5 to move the multiple steps 4. The driving machine 7 has a reducer 8, a V-belt 9, and a driving motor 10. The reducer 8 has an input shaft 8a, a gear unit 8b, an output shaft 8c, and a brake device 8d. The input shaft 8a has a pulley with a radius L1. As the pulley rotates, the input shaft 8a receives an input of a rotational driving force. The gear unit 8b converts the rotational driving force received by the input shaft 8a into a rotational driving force having the same or a different rotation speed and the same or a different torque. The output shaft 8c outputs the rotational driving force converted by the gear unit 8b. The output shaft 8c has a pulley. The output shaft 8c is connected to the step sprocket 5 via a chain belt wrapped around the pulley.

[0015] For example, the brake device 8d is a disc brake. The brake device 8d is provided coaxially with the input shaft 8a. The brake device 8d can brake the input shaft 8a by applying a braking force by sandwiching a disc (not shown) between brake pads (not shown).

[0016] The V-belt 9 is wound around a pulley of the input shaft 8a. The drive motor 10 has a pulley 11. The V-belt 9 is wound around the pulley 11.

[0017] When the escalator 1 operates in the UP direction, the drive motor 10 generates a rotational driving force corresponding to the UP direction. The UP direction rotational driving force of the drive motor 10 is input to the input shaft 8a of the reducer 8 via a V-belt 9. The reducer 8 rotates the step sprocket 5 via the output shaft 8c and a chain belt. As the step sprocket 5 rotates, the steps 4 circulate between the first entrance 2a and the second entrance 2b. In this case, the step 4 moving on the upper side moves in the UP direction, from the lower floor to the upper floor. Note that when the escalator 1 operates the steps 4 in the DOWN direction, the drive motor 10 generates a rotational driving force corresponding to the DOWN direction. In this case, a similar force is transmitted, and the step 4 moving on the lower side moves in the DOWN direction, from the upper floor to the lower floor.

[0018] For example, the brake device 8d applies a braking force to the input shaft 8a, thereby stopping the steps 4 via the gear unit 8b, the output shaft 8c, and the step sprocket 5. The brake device 8d also keeps the steps 4 stationary by continuing to apply a braking force to the input shaft 8a.

[0019] FIG. 2 is a side view of the drive unit 7 as viewed in the direction of arrow X in FIG. 1. In FIG. 2, devices other than the drive unit 7 are not shown. The drive motor 10 further includes a flywheel 12. The flywheel 12 includes a disk portion 12a. The disk portion 12a is a disk with a radius and thickness that generates a specified inertial torque. Escalators 1 are generally designed so that the absolute value of the acceleration during an emergency stop does not exceed a specified reference acceleration. To satisfy this design even in the event of a power outage, the diameter of the flywheel 12 of the escalator 1 is relatively large. For example, the radius L3 of the disk portion 12a is larger than the radius L2 of the pulley 11. The disk portion 12a is fixed to the pulley 11. The flywheel 12 rotates in synchronization with the pulley 11, thereby rotating in conjunction with the rotation shaft of the drive unit 7.

[0020] During maintenance work on escalator 1, a measurement of the brake torque, which is the braking performance of drive machine 7, is carried out. In the measurement work, a worker uses measuring device 20. Measuring device 20 includes fixing unit 21, gripping unit 22, and measuring unit 23.

[0021] The fixed portion 21 is fixed to the outer periphery of the disk portion 12a of the flywheel 12. Specifically, the fixed portion 21 has a base body 21a, a moving portion 21b, and a movable plate 21c.

[0022] The base body 21a is U-shaped. The base body 21a has a connecting body 21d, a first plate 21e, and a second plate 21f as each side of the U. The connecting body 21d is plate-shaped. The first plate 21e extends perpendicularly from one end of the connecting body 21d to the connecting body 21d. The second plate 21f extends perpendicularly to the connecting body 21d in the same direction as the first plate 21e from the other end opposite the one end of the connecting body 21d. The first plate 21e and the second plate 21f face each other and are parallel to each other. A first buffer body 21g made of resin such as rubber is provided on the surface of the first plate 21e facing the second plate 21f. One or more holes are provided in the center of the second plate 21f, penetrating the second plate 21f toward the first plate 21e.

[0023] For example, the advancing / retreating portion 21b is one or more bolts corresponding to one or more holes. The advancing / retreating portion 21b moves back and forth relative to the second plate 21f toward the first plate 21e. For example, the advancing / retreating portion 21b moves back and forth by rotating relative to a female thread provided in a hole provided in the second plate 21f. One end of the advancing / retreating portion 21b on the side of the first plate 21e is movable between the first plate 21e and the second plate 21f.

[0024] Movable plate 21c is fixed to one end of advancing / retreating portion 21b between first plate 21e and second plate 21f. Movable plate 21c moves together with advancing / retreating portion 21b. A second buffer body 21h made of resin such as rubber is provided on the surface of movable plate 21c facing first plate 21e.

[0025] The first plate 21e and the movable plate 21c sandwich the disk portion 12a, thereby fixing the fixed portion 21 to the outer periphery of the flywheel 12. At this time, the first buffer body 21g and the second buffer body 21h come into direct contact with the disk portion 12a. This prevents scratches on the surface of the disk portion 12a and prevents the paint on the disk portion 12a from peeling off.

[0026] For example, the grip portion 22 has a rod-like shape. However, the shape of the grip portion 22 does not have to be rod-like as long as it can be held by a person. The grip portion 22 is fixed so as to be located on the outer periphery side of the disk portion 12a of the flywheel 12. For example, the grip portion 22 extends from the base 21a of the fixed portion 21 in the outer periphery direction, which is a radial direction about the rotation axis of the flywheel 12.

[0027] The measuring unit 23 is attached to the fixed part 21. For example, the measuring unit 23 is attached to the fixed part 21 so as to be located on the outer circumferential side of the disk part 12a of the flywheel 12. Specifically, the measuring unit 23 is attached to the part where the fixed part 21 and the gripping part 22 are fixed. The measuring unit 23 is a measuring instrument that measures the value of the force applied from the gripping part 22 to the fixed part 21 using a strain gauge or the like. The measuring unit 23 measures the value of the force in the tangential direction of the circle of the disk part 12a, which is the force in the direction that rotates the flywheel 12. For example, the unit of force measured by the measuring unit 23 is [N (Newton)].

[0028] The force measured by the measuring unit 23, i.e., the force applied from the fixed unit 21 to the flywheel 12, is affected by the radius L3 and acts as a torque that rotates the rotation axis of the pulley 11. The V-belt 9 is affected by the radius L2 and receives a force corresponding to the torque received by the pulley 11. The rotation axis of the input shaft 8a is subjected to a torque generated by the force transmitted from the V-belt 9 and the radius L1. For example, when the brake device 8d applies a braking force to the input shaft 8a, and the torque generated by the force applied to the flywheel 12 exceeds the direct brake torque due to the braking force, the flywheel 12 and other components begin to rotate. The force measured by the measuring unit 23 at various times, such as before the flywheel 12 begins to rotate, just before the flywheel 12 begins to rotate, and while the flywheel 12 is rotating, reflects various types of brake torque of the driving machine 7. In particular, the brake torque can be calculated based on the force measured by the measuring unit 23, the radius L1 of the input shaft 8a, the radius L2 of the pulley 11, and the radius L3 of the flywheel 12. That is, by measuring the force in the direction in which the flywheel 12 rotates by the measuring unit 23, various types of brake torque of the driving machine 7 can be quantitatively determined.

[0029] FIG. 3 is a side view of the main parts of the drive machine 7 and the measuring device 20 as viewed from the Y direction in FIG. 2. As shown in FIG. 3, the measuring device 20 may be provided with two or more sets of a fixing unit 21, a gripping unit 22, and a measuring unit 23. For example, the measuring device 20 may be provided with two sets: a first set of a fixing unit 21, a first gripping unit 22, and a first measuring unit 23, and a second set of a fixing unit 21, a second gripping unit 22, and a second measuring unit 23. Although not shown, a measuring unit 23 that aggregates the measurement results of the first measuring unit 23 and the second measuring unit 23 may also be provided. The measuring device 20 further includes a calculation unit 24 and a display unit 25. As an example, the calculation unit 24 and the display unit 25 are provided in the same housing.

[0030] For example, the calculation unit 24 is a computing device having a processing circuit configured with one or more processors and one or more memories. Each function of the calculation unit 24 is realized by one or more processors executing a program stored in one or more memories. The calculation unit 24 is electrically connected to the measurement unit 23 so as to be able to communicate with the measurement unit 23. The calculation unit 24 can accept input of information such as the model of the drive machine 7 and the values ​​of the radii L1, L2, and L3. Based on the input information and the measurement results of the measurement unit 23, the calculation unit 24 calculates various values ​​such as various brake torques applied to the drive machine 7 and braking forces generated by the brake device 8d.

[0031] Display unit 25 has a display that displays information. Display unit 25 is electrically connected to measurement unit 23 and calculation unit 24 so that they can communicate with each other. Display unit 25 displays at least one of the value measured by measurement unit 23 and the value calculated by calculation unit 24.

[0032] In the measurement operation, the worker applies force to the fixing part 21 and then records the value displayed on the display part 25. Note that the measuring device 20 does not necessarily have to include the calculation part 24. In this case, the calculation of the brake torque described below is performed by the worker or a terminal carried by the worker, rather than by the calculation part 24.

[0033] The brake torque is calculated for at least one of the rotations of the drive machine 7 in the up direction and the down direction. Hereinafter, the calculation performed during rotation in the up direction is referred to as the first calculation, and the calculation performed during rotation in the down direction is referred to as the second calculation. For example, the measurement unit 23 can output a measurement result indicating the direction of the force applied to the flywheel 12 via the fixed unit 21, i.e., the direction of rotation, by, for example, indicating the measurement value as positive or negative. The calculation unit 24 can determine the direction of rotation by, for example, receiving input from an operator or analyzing the value of the measurement result from the measurement unit 23. Furthermore, by receiving input from an operator, the calculation unit 24 can detect whether the state of the brake device 8d is in a braking state in which a braking force is applied to the drive machine 7 or a non-braking state in which no braking force is applied to the drive machine 7.

[0034] In the first calculation, a force in a first direction is applied from the fixed part 21 to the flywheel 12 so as to rotate the driving machine 7 in the UP direction. The force applied in the first direction when the brake device 8d is in the braking state is regarded as the first force. In particular, in the first calculation, the first force is measured when the flywheel 12 is rotatable, i.e., when the brake device 8d is applying a dynamic braking force to the relatively moving input shaft 8a. Note that the first calculation may also measure the first force immediately before the flywheel 12 starts to rotate from a stationary state, i.e., the first force indicating the maximum value of the static braking force applied by the brake device 8d to the relatively stationary input shaft 8a. In the first calculation, the calculation unit 24 calculates a first brake torque in the UP direction of the driving machine 7 in the braking state based on the first force, the radii L1, L2, L3, etc.

[0035] In the first calculation, the force applied in the first direction when the brake device 8d is in a non-braking state is regarded as the second force. In particular, the force applied in the first direction when the flywheel 12 is moving at a constant speed is regarded as the second force. The second force reflects the driving resistance of the devices included in the escalator 1, such as the driving machine 7, the step 4, the handrails, and the handrail driving device, excluding the brake device 8d. For example, the value obtained by subtracting the second force from the first force is the value obtained by excluding the influence of the driving resistance of the devices included in the escalator 1 from the first force, i.e., a value reflecting the first braking force of the brake device 8d that brakes the rotation of the driving machine 7 in the UP direction. Therefore, the first braking force is calculated based on various values ​​such as the first force, the second force, and the radii L1, L2, and L3. For example, the value obtained by subtracting the braking torque due to the second force from the first braking torque due to the first force is the braking torque directly generated by the brake device 8d. Note that the value obtained by subtracting the second force from the first force may also be regarded as the first braking force. In this way, the calculation unit 24 calculates the first braking force based on the values ​​of the first force, the second force, etc. For example, the worker determines whether the first braking force falls within a reference value.

[0036] In the second calculation, a force in the second direction is applied from the fixed part 21 to the flywheel 12 so as to rotate the driving machine 7 in the DOWN direction. The force applied in the second direction when the brake device 8d is in the braking state is regarded as the third force. In particular, in the second calculation, the third force is measured when the flywheel 12 is rotatable, i.e., when the brake device 8d is applying a dynamic braking force to the relatively moving input shaft 8a. Note that the second calculation may also measure the third force immediately before the flywheel 12 starts to rotate from a stationary state, i.e., the third force indicating the maximum static braking force applied by the brake device 8d to the relatively stationary input shaft 8a. In the second calculation, the calculation unit 24 calculates a second brake torque in the DOWN direction of the driving machine 7 in the braking state based on the third force, the radii L1, L2, L3, etc.

[0037] In the second calculation, the force applied in the second direction when the brake device 8d is in a non-braking state is regarded as the fourth force. In particular, the force applied in the second direction when the flywheel 12 is moving at a constant speed is regarded as the fourth force. The fourth force is a force that reflects the driving resistance of the devices included in the escalator 1, excluding the brake device 8d. For example, the value obtained by subtracting the fourth force from the third force is the value obtained by excluding the influence of the driving resistance from the third force, i.e., a value that reflects the second braking force of the brake device 8d that brakes the rotation of the drive unit 7 in the DOWN direction. Therefore, the second braking force is calculated based on various values ​​such as the third force, the fourth force, and the radii L1, L2, and L3. For example, the value obtained by subtracting the braking torque due to the fourth force from the second braking torque due to the third force is the braking torque directly generated by the brake device 8d. Note that the value obtained by subtracting the fourth force from the third force may also be regarded as the second braking force. In this way, the calculation unit 24 calculates the second braking force based on the values ​​of the third force, the fourth force, etc. For example, the worker determines whether the second braking force falls within a reference value.

[0038] In this way, during the measurement work, the braking torque of the driving machine 7 and the braking force generated by the brake device 8d alone are directly and quantitatively measured based on the force applied to the flywheel 12. In this case, the radius L3 of the flywheel 12 is large, particularly in a top-driven escalator 1. Even if the force applied to the flywheel 12 is constant, the larger the radius L3, the greater the torque ultimately applied to the input shaft 8a. Therefore, the worker can measure large torques and forces, such as the braking torque of the driving machine 7 and the braking force of the brake device 8d, by the force applied by the worker to the flywheel 12.

[0039] Alternatively, the brake torque and braking force in the DOWN direction may be calculated in the first calculation, and the brake torque and braking force in the UP direction may be calculated in the second calculation.

[0040] Next, steps of the measurement method carried out in the measurement work will be described with reference to FIG. FIG. 4 is a flowchart for explaining an outline of a method for measuring brake torque in the first embodiment.

[0041] The method for measuring brake torque includes the steps shown in the flowchart of Figure 4. The flowchart begins with the measurement operation.

[0042] In step S1, a preparation process is performed. In the preparation process, a worker removes a manhole or the like to expose the driving machine 7 at the first boarding / alighting entrance 2a. The worker then turns off the power to the driving machine 7. Because the power is turned off, the brake device 8d is in a braking state in which it applies a braking force to the driving machine 7.

[0043] Thereafter, in step S2, a fixing step is performed. In the fixing step, the worker fixes the fixing part 21 to the flywheel 12. The worker prepares each function of the measuring device 20 so that it can be measured.

[0044] Thereafter, in step S3, a first rotation process is performed. In the first rotation process, the worker applies a first force to the gripper 22 in a first direction to rotate the flywheel 12. At this time, the measuring unit 23 measures the value of the first force, which is a dynamic value. The worker may record the value of the first force displayed on the display unit 25. Note that the average value of the values ​​measured multiple times by the measuring unit 23 may be recorded as the first force.

[0045] Note that, in the first rotation process, the static braking torque of the brake device 8d may be measured. In this case, the flywheel 12 starts rotating once, then stops, and the static measurement result when a force is applied again in the first direction may be regarded as the first force. This is because, in the brake device 8d, sticking between the brake disc and the pad may cause the static braking force initially applied by the brake device 8d to be abnormally high.

[0046] Thereafter, in step S4, a third rotation process is performed. In the third rotation process, the worker applies a third force to the gripping unit 22 in the second direction to rotate the flywheel 12. At this time, the measuring unit 23 measures the value of the third force, which is a dynamic value. The worker may record the value of the third force displayed on the display unit 25. Note that in the third rotation process, measurements may be performed similarly to those in the first rotation process, except for the direction of rotation.

[0047] Thereafter, in step S5, a debraking step is performed in which the operator switches the brake device 8d to a debraking state.

[0048] Thereafter, in step S6, a second rotation process is performed. In the second rotation process, the worker applies a second force to the gripper 22 in the first direction to rotate the flywheel 12. The measuring unit 23 measures the value of the second force, which is a dynamic value. The worker may record the value of the second force displayed on the display unit 25.

[0049] Thereafter, in step S7, a fourth rotation process is performed. In the fourth rotation process, the operator applies a fourth force to the gripper 22 in the second direction to rotate the flywheel 12. The measuring unit 23 measures the value of the fourth force, which is a dynamic value. The operator may record the value of the fourth force displayed on the display unit 25.

[0050] Thereafter, in step S8, a calculation step is performed. In the calculation step, the calculation unit 24 performs a first calculation and a second calculation to calculate the first brake torque, the first braking force, the second brake torque, and the second braking force. For example, the display unit 25 displays the calculation results of the calculation unit 24. The worker may record the values ​​displayed on the display unit 25. Note that if the calculation unit 24 is not provided, the worker may perform the first calculation and the second calculation.

[0051] Thereafter, in step S9, a removal process is performed. In the removal process, the worker removes each device of the measuring device 20 from the flywheel 12.

[0052] The worker then finishes the measurement work.

[0053] The first and third rotation steps may be performed in the reverse order, or the first and third rotation steps may be repeated a specified number of times before the subsequent step is performed.

[0054] The second rotation step and the fourth rotation step may be performed in the reverse order. Also, the second rotation step and the fourth rotation step may be repeated a specified number of times or more before the subsequent step is performed.

[0055] The first and third rotation steps may be performed after the second and fourth rotation steps. In this case, the braking step is performed after the second and fourth rotation steps and before the first and third rotation steps. In the braking step, the operator switches the brake device 8d to the braking state.

[0056] It is also possible to perform only one of the first calculation and the second calculation, and the rotation step required for that calculation.

[0057] According to the first embodiment described above, the measuring device 20 is used in the method for measuring brake torque. The measuring device 20 includes a fixed unit 21 and a measuring unit 23. In the first rotation step of the measuring method, the measuring unit 23 measures the value of the force applied to the flywheel 12 so as to rotate the driving machine 7. Based on the force value, the brake torque, which is the overall force with which the steps 4 of the escalator 1 are braked, can be quantitatively measured. In other words, the measuring device 20 can quantitatively measure the brake torque of the escalator 1.

[0058] The measuring device 20 further includes a calculation unit 24. The calculation unit 24 calculates the value of the brake torque based on the force value measured by the measuring unit 23. Since the worker does not need to calculate the brake torque value himself, the measurement work can be performed efficiently.

[0059] Furthermore, the measurement unit 23 measures a first force in a first direction when the brake device 8d is in a braking state and a second force in the first direction when the brake device 8d is in a non-braking state. The calculation unit 24 calculates the value of the braking force of the brake device 8d based on the first force and the second force. Therefore, the value of the braking torque of the escalator 1 exerted by the brake device 8d alone can be quantitatively measured as the value of the braking force. For comparison, as shown in the prior art of Patent Document 1, the braking distance of the escalator 1 has traditionally been measured instead of measuring the braking torque. The braking distance is the distance traveled by the step 4 from the start of stopping to the complete stop when the escalator 1 is suddenly stopped while in motion. This braking distance can be considered an indicator of the magnitude of the braking torque of the entire escalator 1. In this case, the braking force exerted by the brake device 8d alone was unknown. Furthermore, only the braking torque when the step 4 was moving, i.e., the dynamic braking capacity of the escalator 1, could be known. According to this embodiment, unlike the conventional technique, the value of the braking force of the brake device 8d can be obtained directly and quantitatively. Also, unlike the conventional technique, the static braking capacity of the escalator 1 when the step 4 is stopped can be known.

[0060] Furthermore, the measuring device 20 includes a first fixing part 21 and a first gripping part 22. By applying force to the first gripping part 22, the worker can apply force to the flywheel 12 via the first fixing part 21. Furthermore, because the first gripping part 22 is located outside the outer periphery of the flywheel 12, the torque generated on the rotating shaft of the flywheel 12 is greater than when the first gripping part 22 is located inside the outer periphery. As a result, the worker can easily generate the torque required to measure the brake torque on the flywheel 12.

[0061] The measuring device 20 further includes a second fixing part 21, a second gripping part 22, and a second measuring part 23. Force is applied to the flywheel from two points, the first fixing part 21 and the second fixing part 21. Therefore, the forces used to attach the first fixing part 21 and the second fixing part 21 to the flywheel 12 are dispersed, making it possible to reduce each force. As a result, damage to the flywheel 12 can be prevented.

[0062] The measurement method also includes a second rotation step and a calculation step. In the first rotation step, the value of the first force is measured, and in the second rotation step, the value of the second force is measured. In the calculation step, the braking force of the brake device 8d is calculated based on the value of the first force and the value of the second force. This makes it possible to quantitatively determine the braking force exerted by the brake device 8d alone.

[0063] The measurement method further includes a third rotation step and a fourth rotation step. The calculation step includes a step of calculating a first braking force that brakes the rotation of the drive machine 7 in the UP direction and a step of calculating a second braking force that brakes the rotation of the drive machine 7 in the DOWN direction. In a typical escalator 1, the first braking force and the second braking force often differ due to the installation environment, such as wear on the brake pads and resistance of the handrail device. By using this measurement method, both the first braking force and the second braking force can be quantitatively determined. This allows workers to perform appropriate maintenance according to the installation environment.

[0064] There may be one set of fixing part 21, gripping part 22, and measuring part 23. In this case, however, the magnitude of the force with which fixing part 21 is fixed to flywheel 12 needs to be greater than when there are two or more sets of fixing part 21, in order to apply sufficient force to flywheel 12.

[0065] The measuring unit 23 or the calculating unit 24 may create and store a time chart of the measurement results in which successive values ​​measured by the measuring unit 23 are associated with the time of measurement. The worker may analyze the brake torque of the driving machine 7 by taking the information of the time chart home and analyzing it. In this case, the display unit 25 is not necessary. Furthermore, the worker can complete the measurement work without having to record values ​​at the work site.

[0066] To summarize the above explanation, possible configurations of the technology according to the present disclosure include the configurations listed below as appendices. (Appendix 1) A device for measuring the braking torque of an escalator, comprising: a fixed portion fixed to a flywheel of a driving machine of the escalator; a measuring unit that measures a value of a force applied to the fixed unit in a first direction, the force being applied to the flywheel so as to rotate the driving machine in one of an UP direction and a DOWN direction; A measuring device comprising: (Appendix 2) a calculation unit that calculates a value of a brake torque of the escalator based on the value of the force in the first direction measured by the measurement unit; 2. The measurement device of claim 1, further comprising: (Appendix 3) the measuring unit measures a value of a first force in the first direction applied to the fixed part in a braking state in which a brake device of the driving machine generates a braking force on the driving machine, and a value of a second force in the first direction applied to the fixed part in a non-braking state in which the brake device does not generate a braking force on the driving machine, 3. The measuring device according to claim 2, wherein the calculation unit calculates the value of the braking force applied by the brake device to the driving machine based on the value of the first force and the value of the second force. (Appendix 4) a first fixed portion that is fixed to an outer periphery of the flywheel; a first gripping portion extending from the first fixing portion in a direction from the center of the flywheel toward the outer periphery thereof; 4. The measuring device according to claim 1, further comprising: (Appendix 5) a second fixing portion fixed to an outer periphery of the flywheel; a second gripping portion extending from the second fixing portion in a direction from the center of the flywheel toward the outer periphery thereof; a second measuring unit that measures a value of the force in the first direction applied to the second fixing unit; 5. The measuring device of claim 4, further comprising: (Appendix 6) a display unit that displays the force in the first direction measured by the measurement unit; 6. The measurement device according to any one of claims 1 to 5, further comprising: (Appendix 7) 1. A method for measuring braking torque of an escalator, comprising: a fixing step of fixing a fixed portion of a measuring device to a flywheel of a driving machine of the escalator; a first rotation step, which is performed after the fixing step, of applying a force in a first direction to the flywheel via the fixing part so that the driving machine rotates in one of an UP direction and a DOWN direction, and causing the measuring part of the measuring device to measure the force in the first direction applied to the fixing part; A method for measuring brake torque comprising: (Appendix 8) In the first rotation step, a first force is applied in the first direction in a braking state in which a brake device of the driving machine applies a braking force to the driving machine, and the measuring unit measures a value of the first force; a second rotation step, which is carried out after the fixing step, of applying a second force in the first direction to the driving machine in a non-braking state in which the brake device is not applying a braking force to the driving machine, and causing the measuring unit to measure a value of the second force; a calculation step, which is carried out after the first rotation step and the second rotation step, of calculating a value of a braking force applied by the brake device to the drive machine based on the measured value of the first force and the value of the second force; 8. The brake torque measuring method according to claim 7, further comprising: (Appendix 9) a third rotation step, which is performed after the fixing step, of applying a third force in a second direction to the flywheel via the fixing unit so that the driving machine rotates in the other of the UP direction and the DOWN direction in the braking state, and causing the measuring unit to measure a value of the third force; a fourth rotation step that is performed after the fixing step, and that applies a fourth force in the second direction in the non-braked state to cause the measuring unit to measure a value of the fourth force; Further provided with The calculation step includes: a step of calculating a value of a first braking force that the brake device applies to the driving machine so as to brake the rotation in one of the UP direction and the DOWN direction, based on the measured values ​​of the first force and the second force, the step being performed after the first rotation step and the second rotation step; a step of calculating a value of a second braking force that the brake device applies to the driving machine so as to brake the rotation in the other of the UP direction and the DOWN direction, based on the measured values ​​of the third force and the fourth force, the step being performed after the third rotation step and the fourth rotation step; 9. The method for measuring brake torque according to claim 8, including: [Explanation of symbols]

[0067] DESCRIPTION OF SYMBOLS 1 Escalator, 2a First entrance / exit, 2b Second entrance / exit, 3 Main frame, 3a Machine room, 5 Step sprocket, 6 Step chain, 7 Drive machine, 8 Reducer, 8a Input shaft, 8b Gear section, 8c Output shaft, 8d Brake device, 9 V-belt, 10 Drive motor, 11 Pulley, 12 Flywheel, 12a Disk section, 20 Measuring device, 21 Fixed section, 21a Base body, 21b Moving section, 21c Movable plate, 21d Connecting body, 21e First plate, 21f Second plate, 21g First buffer body, 21h Second buffer body, 22 Gripping section, 23 Measuring section, 24 Calculating section, 25 Display section

Claims

1. A device for measuring the braking torque of an escalator, comprising: a fixed portion fixed to a flywheel of a driving machine of the escalator; a measuring unit that measures a value of a force in a first direction applied to the fixed unit, the force being applied to the flywheel so as to rotate the driving machine in one of an UP direction and a DOWN direction; A measuring device comprising:

2. a calculation unit that calculates a value of a brake torque of the escalator based on the value of the force in the first direction measured by the measurement unit; The measurement device of claim 1 further comprising:

3. the measuring unit measures a value of a first force in the first direction applied to the fixed part in a braking state in which a brake device of the driving machine generates a braking force on the driving machine, and a value of a second force in the first direction applied to the fixed part in a non-braking state in which the brake device does not generate a braking force on the driving machine, The measuring device according to claim 2 , wherein the calculation unit calculates the value of the braking force applied to the driving machine by the brake device based on the value of the first force and the value of the second force.

4. a first fixed portion that is fixed to an outer periphery of the flywheel; a first gripping portion extending from the first fixing portion in a direction from the center of the flywheel toward the outer periphery thereof; The measuring device according to claim 1 ,

5. a second fixing portion fixed to an outer periphery of the flywheel; a second gripping portion extending from the second fixing portion in a direction from the center of the flywheel toward the outer periphery thereof; a second measuring unit that measures a value of the force in the first direction applied to the second fixing unit; The measurement device of claim 4 further comprising:

6. a display unit that displays the force in the first direction measured by the measurement unit; The measuring device according to claim 1 , further comprising:

7. 1. A method for measuring braking torque of an escalator, comprising: a fixing step of fixing a fixed portion of a measuring device to a flywheel of a driving machine of the escalator; a first rotation step, which is performed after the fixing step, of applying a force in a first direction to the flywheel via the fixing part so that the driving machine rotates in one of an UP direction and a DOWN direction, and having the measuring part of the measuring device measure the force in the first direction applied to the fixing part; A method for measuring brake torque comprising:

8. In the first rotation step, a first force is applied in the first direction in a braking state in which a brake device of the driving machine applies a braking force to the driving machine, and the measuring unit measures a value of the first force; a second rotation step, which is carried out after the fixing step, of applying a second force in the first direction to the driving machine in a non-braking state in which the brake device is not applying a braking force to the driving machine, and causing the measuring unit to measure a value of the second force; a calculation step, which is carried out after the first rotation step and the second rotation step, of calculating a value of a braking force applied by the brake device to the driving machine based on the measured first force value and second force value; The method for measuring brake torque according to claim 7, further comprising:

9. a third rotation step, which is performed after the fixing step, of applying a third force in a second direction to the flywheel via the fixing unit so that the driving machine rotates in the other of the UP direction and the DOWN direction in the braking state, and causing the measuring unit to measure a value of the third force; a fourth rotation step, which is performed after the fixing step, of applying a fourth force in the second direction in the non-braked state to cause the measuring unit to measure a value of the fourth force; Further provided with The calculation step includes: a step of calculating a value of a first braking force that the brake device applies to the driving machine so as to brake the rotation in one of the UP direction and the DOWN direction, based on the measured values ​​of the first force and the second force, the step being performed after the first rotation step and the second rotation step; a step of calculating a value of a second braking force that the brake device applies to the driving machine so as to brake the rotation in the other of the UP direction and the DOWN direction, based on the measured values ​​of the third force and the fourth force, the step being performed after the third rotation step and the fourth rotation step; 9. The method for measuring brake torque according to claim 8, comprising:

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