Brake torque measurement support tool and brake torque measurement method

Abstract

To easily and safely obtain a brake torque value for each electromagnetic brake in an elevator.SOLUTION: A brake torque measurement support tool 600 is provided with a bolt head 603 that is connected to a pinion 402a having a module value equal to that of an emergency rescue gear 302a provided on the outer periphery of a brake drum 302 that rotates integrally with a sheave 104a of a hoist 104 of an elevator 100, the bolt head 603 being provided concentrically with the rotation center of the pinion 402a. The brake torque measurement support tool is used to fix the pinion 402a and the emergency rescue gear 302a in a meshed state. A measurement torque wrench 901 is fitted into the bolt head 603. With the measurement torque wrench 901 fitted into the bolt head 603, a brake torque value at the time when the brake drum 302 starts to slip is calculated based on the braking torque value measured by the measurement torque wrench 901.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present invention relates to a brake torque value measurement assisting tool used to obtain a brake torque value of an elevator, and a brake torque value measurement method using the brake torque value measurement assisting tool. [Background technology]

[0002] In an elevator, a car and a counterweight are connected by a rope. One end of a rope suspended from a sheave of a hoist is connected to the car. The counterweight is connected to the other end of the rope. The sheave bears the load of the car carrying passengers (and baggage, etc.) and the load of the counterweight.

[0003] Modern elevators are generally equipped with two (or more) brakes that operate independently. Each brake is required to have the holding force to keep the car stopped by itself. Specifically, each brake is required to have the holding force to keep the car stopped even when a load (maximum differential weight) equivalent to the difference between the load by the car and the load by the counterweight, which is half of the maximum mass that can be loaded on the car (maximum rated load), is applied.

[0004] Conventionally, the brake holding force, i.e., the elevator brake torque value, has been determined by carrying a test weight exceeding the maximum differential weight into a stationary car and determining the load at which the brakes slip.

[0005] Specifically, a related technology in the past has been to apply a force in the rotational direction to a sheave while applying a brake with the tension in the cage rope wound around the sheave removed, and measure the magnitude of the force in the rotational direction with a measuring device (see, for example, Patent Document 1 below). [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 7212871 Summary of the Invention [Problem to be solved by the invention]

[0007] However, the above-mentioned conventional technology has a problem that the work of carrying in the test weight is cumbersome and places a heavy burden on the worker. In addition, the above-mentioned conventional technology has room for improvement in terms of ensuring the safety of the worker, since the test weight is loaded until the cage starts to slip.

[0008] In order to solve the problems associated with the prior art described above, an object of the present invention is to provide a brake torque value measurement assistance device and a brake torque value measurement method that can easily and safely obtain the brake torque value of each electromagnetic brake in an elevator. [Means for solving the problem]

[0009] In order to solve the above-mentioned problems and achieve the object, the brake torque value measurement assistance device of the present invention is characterized in that it is connected to a pinion having the same module value as an emergency rescue gear provided on the outer peripheral edge of a brake drum that rotates integrally with a sheave of an elevator hoisting machine, and is equipped with a bolt head provided concentrically with the rotation center of the pinion.

[0010] In addition, the brake torque value measurement assisting tool according to the present invention is characterized in that, in the above invention, it further comprises an adapter that detachably connects the pinion and the bolt head.

[0011] Furthermore, the brake torque value measuring method according to the present invention is characterized in that it includes the steps of: using a brake torque value measuring aid equipped with a pinion having the same module value as an emergency rescue gear provided on the outer peripheral edge of a brake drum that rotates integrally with a sheave of an elevator hoist and a bolt head provided concentrically with the rotation center of the pinion, fixing the pinion and the emergency rescue gear in a meshed state; fitting a measuring torque wrench into the bolt head; and calculating, with the measuring torque wrench fitted into the bolt head, the brake torque value at which the brake drum starts to slip, based on the braking torque value measured by the measuring torque wrench.

[0012] In addition, the brake torque value measuring method of the present invention is characterized in that, in the above-mentioned invention, the calculating process is performed in a state where the brakes other than the brake to be measured among the brakes having two or more systems of brake drums are released. Effect of the Invention

[0013] The brake torque value measurement assistance device and brake torque value measurement method of the present invention have the advantage of making it possible to easily and safely obtain the brake torque value of each electromagnetic brake in an elevator. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is an explanatory diagram showing the configuration of an elevator. [Diagram 2] FIG. 1 is an explanatory diagram (part 1) showing the configuration of a hoisting machine and an electromagnetic brake. [Diagram 3] FIG. 2 is an explanatory diagram (part 2) showing the configuration of the hoisting machine and the electromagnetic brake. [Figure 4] FIG. 4 is an explanatory diagram showing the structure of an emergency rescue handle and a pinion shaft. [Diagram 5] FIG. 4 is an explanatory diagram showing the structure of a pinion shaft. [Figure 6]FIG. 1 is an explanatory diagram (part 1) showing the configuration of a brake torque value measurement assisting tool according to an embodiment of the present invention. [Figure 7] FIG. 2 is an explanatory diagram (part 2) showing the configuration of a brake torque value measurement assisting tool according to an embodiment of the present invention. [Figure 8] FIG. 1 is an explanatory diagram (part 1) showing an outline of a brake torque value measurement operation. [Figure 9] FIG. 2 is an explanatory diagram (part 2) showing an outline of a brake torque value measuring operation. [Figure 10] FIG. 3 is an explanatory diagram (part 3) showing an outline of the brake torque value measurement work. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a brake torque value measurement assisting device and a brake torque value measuring method according to the present invention will be described in detail below with reference to the accompanying drawings.

[0016] (Elevator configuration) First, the configuration of an elevator will be described. Fig. 1 is an explanatory diagram showing the configuration of an elevator. In Fig. 1, elevator 100 can be realized by, for example, a rope type (traction type) elevator. Elevator 100 is installed in, for example, a building such as a multi-story building.

[0017] The elevator 100 includes a car (passenger car) 101 for carrying people and goods. One car 101 is provided for each elevator 100. The car 101 is provided in a hoistway (not shown) that passes through each floor of a building in the vertical direction, i.e., along the moving direction of the car 101.

[0018] The elevator shaft is provided on its side with a guide rail (not shown) that guides the elevator position of the car 101. The elevator shaft is also provided with a shock absorber 102 at its bottom to cushion the impact if the car 101 falls and hits the bottom surface of the elevator shaft. The shock absorber 102 may be a spring type shock absorber 102 that uses the elastic force of a spring to cushion the impact, or an oil-filled type shock absorber 102 that uses hydraulic resistance to cushion the impact. The shock absorber 102 may also be provided on the ceiling surface of the elevator shaft.

[0019] The cage 101 is connected to one end of a rope 103. The rope 103 is hung on a sheave 104a of a hoist (traction machine) 104 or a sheave not shown, and the other end of the rope is connected to a counterweight 105. Specifically, the rope 103 can be realized by, for example, a steel wire.

[0020] The hoist 104 in the rope-type elevator 100 is installed, for example, in a machine room provided at the top of the elevator 100. The hoist 104 can be provided at the top of the elevator 100 regardless of whether or not there is a machine room. Alternatively, if the elevator 100 is a type that does not have a machine room, the hoist 104 may be provided at the bottom of the elevator 100.

[0021] The hoist 104 is controlled, for example, by an inverter, and is driven and controlled by a control panel 106 so as to stop rotation at the floor where the car 101 is to be stopped. In the rope-type elevator 100, the car 101 is raised and lowered by utilizing the frictional force (traction) between the rope 103 and the pulley, which is generated by driving the hoist 104.

[0022] The hoist 104 is equipped with an encoder (not shown), and the control panel 106 can determine the rotation speed and rotation position of the hoist 104 based on an output signal from the encoder. For example, an absolute encoder or an incremental encoder may be used as the encoder. The encoder may be provided when the elevator 100 is installed, or may be added later after installation.

[0023] The elevator 100 also includes two electromagnetic brakes (brakes) 107, a governor machine 108, a limit switch 109, etc. In this embodiment, an elevator 100 including two electromagnetic brakes 107 will be described, but the number of electromagnetic brakes 107 is not limited to two. The elevator 100 may include two or more electromagnetic brakes 107.

[0024] The electromagnetic brake 107 includes a coil (not shown), and is driven and controlled by the control panel 106 to pass current through the coil, thereby utilizing an electromagnetic force to stop the rotation of the hoisting machine 104. The electromagnetic brake 107 can maintain the state in which the rotation of the hoisting machine 104 is stopped.

[0025] The electromagnetic brake 107 stops the rotation of the hoisting machine 104 when the supply of power is stopped due to a power outage or the like. Specifically, the electromagnetic brake 107 may be, for example, a non-excitation actuated electromagnetic brake 107 that operates by spring force to stop the rotation of the hoisting machine 104 when the power supply to the coil is cut off due to a power outage or the like.

[0026] The speed governor 108 detects an excess speed of the car 101. The speed governor 108 can be realized by, for example, a centrifugal speed governor including a governor rope 108a, a governor pulley 108b, and a rotor (not shown). In such a speed governor 108, the governor rope 108a is linked to the operation of the car 101. The governor pulley 108b rotates in conjunction with the operation of the governor rope 108a.

[0027] The oscillating weight operates according to the rotation speed of the governor pulley 108b, i.e., the magnitude of the centrifugal force caused by the rotation of the governor pulley 108b. Specifically, the oscillating weight operates to open toward the outer periphery of the governor pulley 108b when the rotation speed of the governor pulley 108b is fast, and operates to close toward the inner periphery of the governor pulley 108b when the rotation speed of the governor pulley 108b is slow.

[0028] The limit switch 109 includes a switch lever (not shown) that switches between supplying and cutting off power to the hoist 104. The switch lever is normally positioned at a position that supplies power to the hoist 104, and when biased by the rotor of the speed governor 108, is displaced to a position that cuts off the supply of power to the hoist 104.

[0029] The rotor of the speed governor 108 biases the switch lever so that, when the ascending / descending speed of the car 101 reaches a certain speed or higher relative to the rated speed, the switch lever is displaced to a position that cuts off the supply of power to the hoist 104. This makes it possible to stop the operation of the hoist 104 and stop the car 101 when the car 101 exceeds the speed limit.

[0030] Furthermore, the elevator 100 may be equipped with an emergency stop device. The emergency stop device forcibly stops the movement of the car 101 when the movement of the car 101 and the movement of the governor rope 108a differ, that is, when the car 101 is moving even though the governor rope 108a has stopped. The emergency stop device can be easily realized using various known techniques, so a description thereof will be omitted.

[0031] The cage 101 is equipped with a door 101a. The cage 101 is also equipped with a motor (not shown) for opening and closing the door 101a, a door opening / closing sensor (not shown) for detecting the open / closed state of the door 101a, and an operation panel 101b. The motor for opening and closing the door 101a is driven and controlled by a control panel 106 to open and close the door 101a.

[0032] The output of the door open / close sensor changes depending on whether the door 101a or the door 110a is open or closed, depending on the state of the safety shoe located between the door 101a and the door 110a. The door open / close sensor can be realized by, for example, a microswitch or a photoelectric sensor. The door open / close sensor is connected to the control panel 106 via a wire, and the signal output from the door open / close sensor is input to the control panel 106 via the wire.

[0033] Doors 110a are provided at positions (landings) 110 in the elevator shaft corresponding to each floor. The doors 110a provided at the landings 110 are locked by a device called an interlock (not shown). The interlock engages with the opening / closing mechanism of the door 101a of the car 101 to release the lock only when the motor of the car 101 is driven after the elevator 100 has arrived at a stop floor. This allows only the door 110a provided at the landing 110 on the floor where the car 101 is located to be opened and closed in conjunction with one another among the doors 110a provided at each floor.

[0034] Further, at positions (landings) 110 in the elevator shaft corresponding to each floor, a plate (not shown) is provided for detecting the position of the car 101. A plurality of plates are provided in the longitudinal direction of the elevator shaft, i.e., in the vertical direction. The car 101 is provided with a car position detection sensor 101c for detecting the position of the car 101 using the plate.

[0035] The car position detection sensor 101c is provided, for example, on the outside of the car 101, on the ceiling or wall of the car 101. The car position detection sensor 101c includes a light-emitting element and a light-receiving element provided in a position facing the light-emitting element. The car position detection sensor 101c outputs a signal according to the light-receiving state of the light-receiving element. Specifically, the car position detection sensor 101c outputs different signals to the control panel 106 when a plate is positioned between the light-emitting element and the light-receiving element of the car position detection sensor 101c as the car 101 moves and when the light-receiving element receives light emitted by the light-emitting element.

[0036] The plate is provided at a position that blocks light between the light emitting element and the light receiving element in the car position detection sensor 101c when the car 101 is located at the landing position (landing 110) on each floor. The plate may also be provided at a position that blocks light between the light emitting element and the light receiving element in the car position detection sensor 101c when the car 101 passes a position that is a predetermined distance away from the position where the car 101 stops on each floor. This makes it possible to identify the position of the car 101 before the car 101 reaches the destination floor.

[0037] At each landing 110, an operation panel 111 is installed, which includes a landing call button 111a, a display 111b for displaying the floor where the car 101 is located, etc. Each operation panel 111 includes a control board 111c for the operation panel 111, and is connected to the control panel 106 via the control board 111c.

[0038] Each part, such as the operation panel 101b, various sensors including the car position detection sensor 101c and the door opening / closing sensor, the hoist 104, the electromagnetic brake 107, the speed governor 108, the limit switch 109, and the operation panel 111 (control board 111c), is connected to the control panel 106 via cables 112.

[0039] (Configuration of hoist 104 and electromagnetic brake 107) Next, the configurations of the hoisting machine 104 and the electromagnetic brake 107 will be described. Figures 2 and 3 are explanatory diagrams showing the configurations of the hoisting machine 104 and the electromagnetic brake 107. Figures 2 and 3 show the external appearances of the hoisting machine and the brake.

[0040] As shown in Figures 2 and 3, the hoisting machine 104 and the electromagnetic brake 107 are integrated. The hoisting machine 104 includes a motor 301. A sheave 104a is connected to the motor 301. The sheave 104a rotates with the rotation of the motor 301, and stops when the motor 301 stops. A rope 103 is suspended on the sheave 104a.

[0041] The brake 107 includes a brake drum 302 housed inside a housing 201. An emergency rescue gear 302a is provided on the outer periphery of the brake drum 302. The brake drum 302 and the emergency rescue gear 302a are partially exposed to the outside through an opening 303 provided in the housing 201.

[0042] Brake drum 302 rotates integrally with sheave 104a and stops when sheave 104a stops rotating. Two electromagnetic brakes 107 are provided inside housing 201. Each electromagnetic brake 107 can operate independently. Each electromagnetic brake 107 is driven and controlled by a control panel 108 that drives and controls each part of the elevator, a UCMP panel (not shown) provided in an Unintended Car Movement Protection (UCMP), or the like.

[0043] The electromagnetic brake 107 includes a brake coil (electromagnetic coil), brake linings (brake shoes), a spring, a link mechanism, etc. (all not shown). The electromagnetic brake uses the biasing force of the spring to press the brake linings against the brake drum 302, thereby braking the rotation of the brake drum 302, i.e., the rotation of the sheave.

[0044] When the brake coil is not energized, the electromagnetic brake 107 brakes the rotation of the brake drum 302, i.e., the rotation of the sheave 104a. When the brake coil is energized, the electromagnetic brake 107 releases the brake by using the brake coil to attract the movable core pressed by the spring, thereby moving the brake lining away from the brake drum 302 against the biasing force of the spring. When the brake coil is stopped being energized, the electromagnetic brake 107 again brakes the rotation of the brake drum 302, i.e., the rotation of the sheave.

[0045] The electromagnetic brake 107 is equipped with a manual brake release lever 202. When operated by an operator, the manual brake release lever 202 operates to push the movable iron core toward the fixed iron core using the principle of leverage. This action allows the electromagnetic brake 107 to be manually released against the biasing force of the spring.

[0046] The manual brake release lever 202 is operated, for example, when the car 101 is suddenly braked while traveling and stops at a position different from the normal stopping position such as a platform 110. This allows the electromagnetic brake 107 to be appropriately released, moving the car 101 to the nearest platform 110 and rescuing the passengers in the car 101.

[0047] The movement of the basket 101 is achieved by operating the manual brake release lever 202, with the pinion shaft (see Figures 4 and 5) meshed with the emergency rescue gear 302a through the opening 303, and the operator manually turning the emergency rescue handle (see Figure 4) connected to the pinion shaft.

[0048] (Emergency rescue handle and pinion shaft structure) Next, the structures of the emergency rescue handle and the pinion shaft will be described. Fig. 4 is an explanatory diagram showing the structures of the emergency rescue handle and the pinion shaft. Fig. 5 is an explanatory diagram showing the structure of the pinion shaft.

[0049] 4, the emergency rescue handle 401 includes an operating part 401a having a substantially disk shape, and a connecting part 401b protruding in the axial direction from substantially the center of the operating part 401a. The operating part 401a and the connecting part 401b are formed using a metal material, and are fixed to each other by, for example, welding.

[0050] The connecting portion 401b has a hollow cylindrical shape. A through hole 401c penetrating a diameter portion of the connecting portion 401b is provided on the side (tip side) of the connecting portion 401b that is away from the operating portion in the axial direction of the connecting portion 401b. Since the connecting portion 401b has a hollow cylindrical shape, two through holes 401c are provided so as to face each other with a cavity inside the connecting portion 401b between them.

[0051] As shown in Fig. 4 and Fig. 5, the pinion shaft 402 includes a pinion 402a and a shaft 402b. The pinion 402a has teeth on its outer periphery, the teeth having a module value equal to that of the emergency rescue gear 302a. The shaft 402b has a cylindrical shape and is connected to the pinion 402a so that its axis is coaxial with the axis of the pinion 402a. The pinion 402a and the shaft 402b are fixed together by, for example, welding. The pinion shaft 402 may be formed by integrally molding the pinion 402a and the shaft 402b by, for example, casting.

[0052] The shaft 402b is provided with a through hole 402c that penetrates a diameter portion of the shaft 402b. The outer diameter of the shaft 402b is approximately equal to the inner diameter of the cylindrical coupling part 401b, and is set to such an extent that the shaft 402b can be inserted into the coupling part 401b.

[0053] The emergency rescue handle 401 and the pinion shaft 402 are connected and fixed using a bolt 403 and a nut 404. Specifically, the emergency rescue handle 401 and the pinion shaft 402 can be connected by inserting the bolt 403 so that it passes through the through holes 401c and 402c in a state where the shaft 402b is inserted into the connecting part 401b so that the two through holes 401c of the connecting part 401b and the through hole 402c of the shaft 402b overlap, and screwing the nut 404 onto the tip of the bolt 403 that has passed through and protruded to the opposite side.

[0054] (Outline of emergency rescue operations) Next, an overview of the emergency rescue operation will be described. In the emergency rescue operation, first, the emergency rescue handle 401 and the pinion shaft 402 are connected as described above. Next, the pinion 402a is meshed with the emergency rescue gear 302a provided on the outer periphery of the brake drum 302.

[0055] Next, while operating the manual brake release lever 202 to release the electromagnetic brake 107, the emergency rescue handle 401 is operated to rotate the sheave 104a to move the car 101 to the nearest landing. In this way, even if the car 101 stops between floors due to sudden braking while traveling, the car 101 can be moved to the landing 110 to safely rescue the users.

[0056] (Configuration of brake torque value measurement aid) Next, the configuration of a brake torque value measurement assisting tool according to an embodiment of the present invention will be described. Figures 6 and 7 are explanatory diagrams showing the configuration of a brake torque value measurement assisting tool according to an embodiment of the present invention. Figure 6 shows the external appearance of the brake torque value measurement assisting tool according to an embodiment of the present invention. Figure 7 shows a cross section taken along line AA in Figure 6.

[0057] 6 and 7, a brake torque value measurement assisting tool 600 according to an embodiment of the present invention includes an adapter body (adapter) 601. The adapter body 601 has a hollow cylindrical shape. The adapter body 601 is provided with a through hole 601a that penetrates a diameter portion of the adapter body 601. Since the adapter body 601 has a hollow cylindrical shape, two through holes 601a are provided facing each other with a cavity 701 inside the adapter body 601 between them.

[0058] A flange member 602 is provided at one axial end of the adapter body 601. The flange member 602 has a disk shape and closes one axial end of the adapter body 601. The adapter body 601 and the flange member 602 are connected by, for example, welding. In the brake torque value measurement assisting tool 600, the adapter body 601 and the flange member 602 may be integrally molded by, for example, casting.

[0059] A bolt head 603 is provided on the flange member 602 on the side opposite to the adapter body 601. The bolt head is connected to the flange member 602 by, for example, welding. The flange member 602 and the bolt head 603 may be integrally molded by, for example, casting.

[0060] The bolt head 603 has a hexagonal prism shape similar to the head of a hexagonal bolt. The shape of the bolt head 603 is not limited to a hexagonal prism shape, and may be a polygonal shape such as a triangular prism, a square prism, or a pentagonal prism.

[0061] (Outline of brake torque measurement procedure) Next, an outline of the brake torque value measurement operation by the brake torque value measurement method using the brake torque value measurement assisting tool 600 according to the embodiment of the present invention will be described. Figures 8 to 10 are explanatory diagrams showing an outline of the brake torque value measurement operation.

[0062] In the brake torque value measurement operation, first, the brake torque value measurement assisting tool 600 is connected to the pinion shaft 402. The brake torque value measurement assisting tool 600 and the pinion shaft 402 are connected and fixed using the bolt 403 and the nut 404, similar to the connection between the emergency rescue handle 401 and the pinion shaft 402.

[0063] Specifically, the brake torque value measurement assisting tool 600 and the pinion shaft 402 are connected by inserting the bolt 403 through the through holes 601a and 402c in a state where the shaft 402b is inserted into the adapter body 601 so that the two through holes 601a of the adapter body 601 and the through hole 402c of the shaft 402b are aligned. Then, the bolt 403 is inserted so as to pass through the through holes 601a and 402c. Then, the bolt 403 is connected to the pinion shaft 402 by screwing the nut 404 onto the tip of the bolt 403 that has passed through and protrudes to the opposite side.

[0064] Next, the pinion shaft 402 to which the brake torque value measurement support tool 600 is connected is inserted into the housing 201 through the opening 303, and the pinion 402a is meshed with the emergency rescue gear 302a, as shown in Fig. 8. Thereafter, the measurement torque wrench 901 is connected to the bolt head 603 of the brake torque value measurement support tool 600.

[0065] The measuring torque wrench 901 may be connected to the bolt head of the brake torque value measurement assisting tool via a socket 902 that fits the bolt head 603. Specifically, the pinion shaft 402, the brake torque value measurement assisting tool 600, the socket 902, and the measuring torque wrench 901 are connected as shown in FIG.

[0066] Then, with the basket 101 unloaded and stationary, the worker manually operates the manual brake release lever 202 as appropriate while measuring the braking torque value using a measuring torque wrench 901 appropriately connected via a socket 902 to the brake torque value measurement support tool 600 connected to the pinion shaft 402, as shown in Fig. 10. The braking torque value is the measurement value of the measuring torque wrench 901 when the brake drum 302 starts to slip.

[0067] Next, the measured braking torque value is used to calculate the brake torque value: T bk [Nm] is calculated using the following formula (1): T tr indicates the braking torque value [Nm], D indicates the effective sheave diameter [m], and W ub indicates the maximum differential weight [N] applied to the sheave when the car is stopped.

[0068]

number

[0069] The braking torque value is measured for each electromagnetic brake 107. That is, in an elevator 100 equipped with two electromagnetic brakes 107, the braking torque value is measured twice. The braking torque value may be measured multiple times for each electromagnetic brake 107. This ensures the reliability of the measurement results of the braking torque value, and ensures the safety of users of the elevator 100.

[0070] As described above, the brake torque value measurement assistance device 600 of an embodiment of the present invention is characterized in that it is connected to a pinion 402a having the same module value as the emergency rescue gear 302a provided on the outer peripheral edge of the brake drum 302 that rotates integrally with the sheave 104a of the hoist 104 of the elevator 100, and is provided with a bolt head 603 provided concentrically with the rotation center of the pinion 402a.

[0071] Also, the brake torque value measurement assisting tool 600 according to the embodiment of the present invention is characterized in that it includes an adapter body 601 that detachably connects the pinion 402a and the bolt head 603.

[0072] Furthermore, the brake torque value measuring method according to the embodiment of the present invention is characterized by including the steps of: using a brake torque value measuring support tool 600, which is connected to a pinion 402a having the same module value as an emergency rescue gear 302a provided on the outer peripheral edge of a brake drum 302 that rotates integrally with a sheave 104a of a hoist 104 of an elevator 100 and includes a bolt head 603 provided concentrically with a rotation center of the pinion 402a, fixing the pinion 402a and the emergency rescue gear 302a in a meshed state; fitting a measurement torque wrench 901 into the bolt head 603; and calculating, with the measurement torque wrench 901 fitted into the bolt head 603, a brake torque value at which the brake drum 302 starts to slip, based on the braking torque value measured by the measurement torque wrench 901.

[0073] Furthermore, the brake torque value measuring method of the embodiment of the present invention is characterized in that the calculation process is performed in a state where brakes other than the brake to be measured among the two or more systems are released.

[0074] According to the brake torque value measurement support tool 600 of the embodiment of the present invention and the brake torque value measurement method using the brake torque value measurement support tool 600, the brake torque value of the elevator 100 can be obtained without carrying a test weight into the car 101. This makes it possible to easily and safely obtain the brake torque value of each of the electromagnetic brakes 107 in the elevator 100. [Industrial Applicability]

[0075] As described above, the brake torque value measurement aid and brake torque value measurement method of the present invention are useful as a brake torque value measurement aid used to obtain the brake torque value of an elevator, and as a brake torque value measurement method using said brake torque value measurement aid, and are particularly suitable as a brake torque value measurement aid used to obtain the brake torque value of an elevator equipped with multiple brake systems, and as a brake torque value measurement method using said brake torque value measurement aid. [Explanation of symbols]

[0076] 100 Elevator 101 Basket 103 Rope 104 Hoisting machine 104a Sheave wheel 302 Brake drum 302a Emergency rescue gear 402 Pinion shaft 402a Pinion 600 Brake torque value measurement aid 601 Adapter body (adapter) 603 Bolt Head 901 Measuring torque wrench 902 Socket

Claims

1. The brake drum is connected to a pinion having the same module value as the emergency rescue gear provided on the outer periphery of the brake drum which rotates integrally with the sheave of the elevator hoist, and is provided with a bolt head provided concentrically with the rotation center of the pinion. A brake torque value measurement assisting tool comprising:

2. an adapter for removably connecting the pinion and the bolt head; 2. The brake torque value measurement aid according to claim 1 .

3. a step of connecting a pinion having the same module value as an emergency rescue gear provided on an outer periphery of a brake drum that rotates integrally with a sheave of an elevator hoist, and fixing the pinion and the emergency rescue gear in a meshed state using a brake torque value measurement support tool having a bolt head provided concentrically with the rotation center of the pinion; fitting a measuring torque wrench onto the bolt head; a step of calculating a brake torque value at the time when the brake drum starts to slip based on a braking torque value measured by the measuring torque wrench in a state where the measuring torque wrench is fitted to the bolt head; A brake torque value measuring method comprising the steps of:

4. The calculating step includes: The measurement is performed in a state where the brakes other than the brake to be measured among the brakes having two or more systems of the brake drums are released.

4. The brake torque value measuring method according to claim 3.

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