JP6042259B2 - Device for evaluating operating characteristics of braking device - Google Patents

Description

  The present invention relates to an operation characteristic evaluation device for a braking device, and more particularly, an operation characteristic evaluation device for a braking device suitable for, for example, an elevator braking device in which a brake shoe is pressed against a brake drum by a restoring force of a braking spring. About.

One of the braking devices is a braking device for an electric motor that drives an elevator. As this braking device 78, a device generally called a drum brake as shown in FIG. 1 is used. Drum brake is the brake drum 2 provided on a rotary shaft 1 of the motor driving the elevator car in the vertical direction, the pair provided arms 4a, the brake shoe 3a attached to 4b, intended to brake against the 3b It is. The electric motor drives the sheave on which the main rope that suspends the riding car and the counterweight is wound. The arms 4a and 4b are provided with springs 5a and 5b (compression coil springs in the drawing), respectively, and the restoring (elastic) force of the springs 5a and 5b always presses the brake shoes 3a and 3b against the brake drum 2. , 4b.

  On the other hand, a brake core 7 for driving the arms 4a and 4b in a direction in which the brake shoes 3a and 3b are separated from the brake drum 2 against the restoring force of the springs 5a and 5b to release the braking to the motor. Is provided. Then, the operation of the brake core 7 operates the arms 4a and 4b in a direction to separate the brake shoes 3a and 3b from the brake drum 2 against the restoring force of the springs 5a and 5b, thereby releasing the braking.

  In the operation of the braking device 78, it is important whether or not the brake core 7 operates smoothly and quickly. When the operation of the brake core 7 becomes slow, the release time of the arms 4a and 4b is delayed. As a result, the contact time between the brake shoes 3a, 3b and the drum brake 2 becomes longer, and the wear of the brake shoes 3a, 3b progresses abnormally, leading to a reduction in braking force. Further, when the brake core 7 is completely astringent, it can be considered that the arms 4a and 4b are stopped in a released state. In such a case, there is no denying the possibility that an unexpected situation will occur in the raising / lowering operation of the car.

  Thus, the braking device 78 is a main part of the elevator and an important part for controlling the operation thereof. Therefore, in addition to the inspection items for consumables such as the brake shoes 3a and 3b, the determination is made by a brake operation characteristic evaluation device that detects the operation characteristics of the brake device 78. Also, it is necessary to explain to customers the status of implementation of maintenance work.

  Therefore, for example, Japanese Patent Application Laid-Open No. 2007-91381 (Patent Document 1) describes a technique for creating a report for explaining the implementation status of maintenance work to a customer.

  In this known technology, the work report should be reported to the customer by the maintenance / report source block composed of the work report source information including the work result report destination and the maintenance staff responsible for the work. Report summary block that displays items in text, work photo block that is selectively provided, and posts photographs taken before and after the work according to instructions for taking work photographs from work plan data, remote monitoring data and machine inspection results and work It is configured to include a work content report block for writing together with the result data, and a topic / CM block that is provided selectively and publishes the advertisement data stored in the advertisement data storage means provided in the information center apparatus. . With this configuration, it is easy for the customer to understand the implementation status of the maintenance work, and it is possible to create a good-looking work report.

JP 2007-91381 A

  The work report described in Patent Literature 1 describes work details, work photos, and the like. However, the structure of a braking device such as an elevator is complicated, and it is not easy to explain the maintenance results to customers who do not know these structures in detail, and to replace necessary parts or propose new maintenance items, It takes a lot of time to gain understanding.

  Therefore, a problem to be solved by the present invention is to present a maintenance result in an easily understandable manner to a customer who does not know the structure of the braking device in detail.

In order to solve the above problems, the present invention includes an electromagnetic coil and a brake core, a brake shoe attached to the arm presses a brake drum directly connected to the electric motor, the operation of the braking equipment for braking the rotation shaft of the electric motor A characteristic evaluation apparatus, a displacement amount detecting means for detecting a displacement amount of a brake core operated by energization of the electromagnetic coil, a measuring means for measuring a current value supplied to the electromagnetic coil, and the displacement amount detecting means Evaluation means for evaluating the operating characteristics of the braking device from the measurement value measured by the measurement means corresponding to the displacement detected by the above, and a presentation means for presenting the evaluation result by the evaluation means , The measuring means includes a first current value immediately before the displacement amount on the starting side of the brake core detected by the displacement amount detecting means becomes maximum, and a change on the release side. The second current value immediately before the amount reaches the maximum is measured, and the evaluation means deteriorates the braking device based on a current width obtained by comparing the first current value and the second current value. Determination means for determining a state, wherein the presenting means includes a maintenance proposal database storing items to be contacted with a customer, and selects the item based on the deterioration state determined by the determination means from the maintenance proposal database It is characterized by presenting .

According to the present invention, maintenance results can be presented easily to customers who do not know the structure of the braking device in detail. Note that problems, configurations, and effects other than those described above will be clarified in the following description of embodiments.

It is a figure which shows schematic structure of the braking device of the elevator which consists of a drum brake generally used for the electric motor which raises / lowers an elevator. 1 is a functional block diagram showing a schematic configuration of a brake operation characteristic determination system including an elevator brake operation characteristic evaluation device according to an embodiment of the present invention. It is a figure which shows the outline | summary of the work report produced with the brake operation characteristic evaluation apparatus. It is a figure which shows the detail of the display content of the basic information display block of a work report. It is a figure which shows the detail of the maintenance work content of a work report, and the display content of a result display block. It is a figure which shows the detail of the display content of the part photograph block of a work report. It is a figure which shows the detail of the display content of the maintenance worker communication content block of a work report. It is a figure which shows the relationship between an electric current and a core stroke. It is a figure which shows the deterioration prediction of the operation | movement characteristic of braking operation | movement. It is a figure which shows the wear progress prediction of a brake shoe. It is a figure which shows the correspondence of the preparation method of a measurement point, a prediction line, and an inspection with a table | surface form. It is a figure which shows the lifetime and wear progress prediction when components replacement | exchange occurs.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a schematic configuration of an elevator braking device including a drum brake generally used for an electric motor for raising and lowering an elevator.

  In the figure, in an elevator braking device 78, a brake drum 2 is directly connected to a rotating shaft 1 of an electric motor (not shown), and a pair of arms 4a and 4b are arranged so as to sandwich the brake drum 2. A pair of brake shoes 3a, 3b for braking are provided on the surfaces of the pair of arms 4a, 4b facing the brake drum 2, respectively. One end of each of the arms 4a and 4b is supported by the support portions 8a and 8b of the arm support 8 so as to be swingable by support pins 8a1 and 8b1. Further, the other end is given an elastic force by compression coil springs (hereinafter simply referred to as springs) 5a and 5b in directions close to each other. As a result, the brake shoes 3a and 3b come into contact with the brake drum 2 and are pressed by the elastic force to obtain a frictional force necessary for braking.

  When releasing the force of the arms 4a and 4b, the electromagnetic coil 6 is energized to move the brake core 7 downward (state shown in FIG. 1). As a result, a force that opposes the restoring force of the springs 5a and 5b is generated, and a force that moves the arms 4a and 4b in the direction of arrow a acts via the crank mechanism. Due to the movement in the direction of the arrow a, the brake shoes 3a and 3b are separated from the brake drum 2, and the braking force of the brake drum 2 by the brake shoes 3a and 3b is released.

  FIG. 2 is a functional block diagram showing a schematic configuration of a brake operation characteristic determination system including an elevator brake operation characteristic evaluation device according to an embodiment of the present invention. The brake operation characteristic evaluation apparatus 70 is an apparatus that evaluates the operation characteristics of the braking device 78 of the elevator 79.

  In FIG. 2, the brake operation characteristic determination system includes an elevator brake operation characteristic evaluation device 70, a telephone line 72 or a wireless telephone line 71, a maintenance data management server 73, a sales office 74 PC, and a printer 80. Yes.

  The brake operation characteristic evaluation device 70 of the elevator 79 includes a terminal portable device 75, a camera 76, and a brake operation characteristic determination unit 77. The brake operation characteristic determination unit 77 is connected to an elevator braking device 78, a measurement device 771, and a displacement detection device 772. The brake operation characteristic evaluation device 70 can communicate with a maintenance data management server 73 and a PC (personal computer) at a sales office 74 via a telephone line 72 and a wireless telephone line 71.

  In FIG. 2, the elevator 79 is provided with an elevator control device 711 and a drive control device 712 in addition to the braking device 78. The elevator control device 711 takes in a signal from the drive control device 712 and controls the operation of the elevator 79 based on the data.

  For example, the elevator control device 711 stores an operation time calculated from an operation signal sent from the drive control device 712 to the electric motor. Further, the elevator control device 711 can transmit / receive data to / from the maintenance data management server 73 through the telephone line 72, and the maintenance data management server 73 can analyze the data and check the operation status. Furthermore, data can be transmitted and received through the telephone line 72 to the sales office 74, that is, the PC at the maintenance staff dispatch base, and operation information of the elevator 79 can be obtained.

  The maintenance data management server 73 stores a building equipment information database. For example, it is possible to manage a maintenance schedule, and it is also possible to perform automatic allocation of a schedule and allocation by an administrator.

  The portable terminal device 75 can transmit and receive data via the maintenance data management server 73 and the telephone line 72. Therefore, the past maintenance information can be received together with the reception of the schedule assigned to each building facility and the elevator 79 as described above.

The mobile terminal device 75 is connected to the camera 76 and can store and store data captured by the camera 76. Needless to say, the connection between the portable terminal device 75 and the camera 76 may be either wired or wireless. It is also possible to use a storage medium such as a flash memory . Up to this point, each device has been wired communication, but each communication can be replaced with the wireless telephone line 71 or wireless communication. Further, a data communication line such as a wired or wireless internet line can be used instead of the telephone line.

  The printer 80 in FIG. 2 has a function of printing out the image data sent from the portable terminal device 75 by wireless communication as a report 20 here.

  FIG. 3 is a diagram showing an outline of a work report created by the brake operation characteristic evaluation device 70. In the figure, the maintenance work result report 20 is divided into four blocks from the top: a basic information display block 21, a maintenance work content and result display block 22, a parts photo block 23, and a maintenance staff contact content block 24. .

  FIG. 4 is a diagram showing details of display contents of the basic information display block 21. In the figure, as display contents of the basic information display block 21, a customer information input column 31, a maintenance staff information input column 32, and a maintenance worker photo description column 33 are provided.

  In the customer information input field 31, the building name, the person in charge (name), the target equipment, the previous maintenance, the delivery year, the manufacturing #, the accumulated travel time, and the monthly average travel time are described. In the maintenance person information input field 32, the maintenance company name, maintenance staff name, work date, and inquiry destination are described. In the maintenance worker photo description column 33, a face photo of the maintenance worker is posted. What is shown in FIG. 4 is an example, and various information may be described as necessary. In addition to manual input, these pieces of information can be automatically input by communication from the maintenance data management server 73.

  FIG. 5 is a diagram showing details of the maintenance work contents and the display contents of the result display block 22. In the figure, as a maintenance work content and a display content of the result display block 22, an inspection item result input column 41, a consumable life prediction graph 42, and a brake (operation) characteristic evaluation value graph 43 are set. The maintenance work content and result display block 22 mainly describes brake consumables and inspection items, but the inspection items to be displayed can be selected as necessary. Further, FIG. 5 shows the wear amount of the brake shoes (linings) 3a and 3b, but it is also possible to display a graph regarding other consumables. For example, the wear amount of the support pins 8a1 and 8b1 of the support portions 8a and 8b of the arms 4a and 4b can be described.

  For example, as shown in FIG. 1, the wear amount can be detected by providing position detection sensors 773a and 773b for detecting the positions of the arms 4a and 4b, and detecting changes in the positions of the arms 4a and 4b. Also in this case, the outputs of the position detection sensors 773a and 773b are input to the brake operation characteristic determination unit 77, the amount of wear of the brake shoes 3a and 3b is calculated by the brake operation characteristic determination unit 77, and the remaining amount is the inspection item result of FIG. It is entered in the input field 41. In parallel with this, wear amount data is transmitted from the portable terminal device 75 to the maintenance data management server 73 and stored in, for example, a building facility information database of the maintenance data management server 73.

  In the present embodiment, the position detection sensors 773a and 773b are used to detect the wear amount of the brake shoes 3a and 3b. However, any known mechanism capable of detecting the wear amount can be applied. Needless to say. Further, the wear amount can be detected by directly measuring the remaining amount of the brake shoes 3a and 3b during maintenance. In this case, the position detection sensors 773a and 773b are unnecessary.

  FIG. 6 is a diagram showing details of display contents of the component photograph block 23. In the component photograph block 23, for example, a scratch 231 of a component found during maintenance is displayed. For such a scratch 231 on the part, data taken by the camera 76 is taken into the portable terminal device 75, and a necessary image is selected and displayed. At this time, as shown in FIG. 6, the overall view and the enlarged view can be combined and displayed in an easily understandable manner.

  FIG. 7 is a diagram showing the details of the display contents of the maintenance staff communication content block 24. In this maintenance staff communication content block 24, the maintenance staff enters a notification regarding parts replacement and inspection items to the customer based on the result of the maintenance. Further, a maintenance proposal database can be stored in the portable terminal device 75 and automatically selected depending on the quality of the inspection items.

  The brake operation characteristic determination unit 77 has a control base for energizing the electromagnetic coil 6 with an arbitrary current pattern, and energization of the electromagnetic coil 6 is controlled by the control base. In addition, a measuring device 771, a displacement detection device 772, and position detection sensors 773a and 773b are connected to the brake operation characteristic determination unit 77.

The measuring device 771 is configured by an ammeter or the like that monitors and measures the current supplied to the electromagnetic coil 6, and the measurement result is input to the brake operation characteristic determination unit 77 as an output of the measuring device 771. The displacement detection device 772 is constituted by a dial gauge, an optical displacement meter, or the like, measures the operation displacement of the brake core 7 when the electromagnetic coil 6 is energized, and determines the brake operation characteristic as an output of the displacement detection device 772. Input to the unit 77. The brake operation characteristic determination unit 77 detects the movement amounts of the arms 4a and 4b due to wear of the brake shoes 3a and 3b from the relationship between the measured current and the movement displacement of the brake core 7, and the brake shoes 3a and 4b are detected from the movement amounts. to exit calculate the amount of wear 3b. The brake operation characteristic determination unit 77 determines whether or not the braking device 78 is operating normally from these results.

  FIG. 8 is a diagram showing the relationship between the current and the core stroke, with the horizontal axis representing the current [A] energizing the electromagnetic coil 6 and the vertical axis representing the movement displacement [mm] of the brake core 7.

  As described above, the operation of the elevator braking device 78 is determined by the balance of the forces of the springs 5 a and 5 b and the brake core 7. Further, the magnitude of the current applied to the electromagnetic coil 6 is proportional to the electromagnetic force generated in the brake core 7. Therefore, as the current increases, the force against the springs 5a and 5b increases, and the arms 4a and 4b move away from the brake drum 2 and the braking force is released.

  Here, the place where the brake core 7 has been operated is a full stroke (in FIG. 8, about 1.5 mm). When resistance force such as frictional resistance is generated in the brake core 7, a current larger than that in a normal state is required until the brake core 7 reaches a full stroke. In FIG. 8, the normal state is illustrated as a normal waveform, and the abnormal state is illustrated as an abnormal waveform. When the movement of the brake core 7 is slow, that is, when the operation becomes abnormal, the current width id shown in FIG.

  Therefore, the characteristic of the braking device 78 is evaluated by comparing the current value before this full stroke. The position where the current width id is taken is set in the range before the full stroke on the starting side where the current rises substantially vertically and on the release side where the current falls almost vertically as well.

  In addition to simply comparing the current width id, it is also possible to model the brake mechanism by an equation of motion and calculate the brake characteristic evaluation value from the measured value. Such calculation of the current width id and the like is performed by the brake operation characteristic determination unit 77, and the brake operation characteristic determination unit 77 functions as an arithmetic device. Further, the brake operation characteristic determination unit 77 holds an abnormality determination value for determining that the current width id is a standard value and the current width id is increased to be abnormal. Thereby, the calculation result by the arithmetic device is compared with the standard value or the abnormality determination value to determine whether it is normal or abnormal.

  Furthermore, the brake operation characteristic determination unit 77 can also predict the parts replacement time of the braking device 78 as described later from the above measurement results and past data trends.

  FIG. 9 is a diagram showing the prediction of the deterioration of the operation characteristics of the braking operation with the travel time on the horizontal axis and the brake characteristic evaluation value on the vertical axis. The travel time is the travel time of the elevator 79 obtained from the elevator control device 711, and the brake characteristic evaluation value is an indexed value for evaluating the brake operation characteristic obtained from the brake operation characteristic determination unit 77, and is measured with an actual machine. In addition, this is a value for convenience in which the deterioration state is replaced with a numerical value from the accumulated data. Based on this value, in this embodiment, a value that requires maintenance and a required maintenance value are set.

  Also, an operation characteristic deterioration prediction line L1 of the braking operation is created from the measured and accumulated brake characteristic evaluation value data. An approximate curve or approximate line is used to create the deterioration prediction line L1. Whether to use an approximate curve or an approximate line is selected based on the tendency of the data. In addition, in FIG. 9, the degradation prediction line L1 was created using the exponential approximation curve along three measured values (measurement results).

  Further, the brake operation characteristic determination unit 77 can input not only the device measurement result but also other maintenance work results. For example, it is the measurement result of the thickness of brake shoes 3a and 3b which are consumables as shown in FIG. This result also uses the past measurement result, creates a wear progress prediction line L2 for predicting the progress of wear of the brake shoes 3a, 3b, sets the wear amount limit default value V2, and proposes the maintenance time and parts replacement. be able to. Needless to say, the thickness (remaining amount) of the brake shoes 3a and 3b can be detected from the outputs of the position detection sensors 773a and 773b as described above.

  FIG. 10 is a diagram showing the prediction of wear progress of the brake shoes 3a and 3b with the travel time on the horizontal axis and the amount of shoe wear on the vertical axis. Note that a quadratic polynomial approximate curve was used to create this curve based on the measured values (measurement results) at four points.

  In FIG. 9, the preset required maintenance value V1 and the deterioration prediction line L1 of the operating characteristic of the braking operation intersect (travel time 8000 hours), and in FIG. 10, the preset wear amount limit default value V2 and the wear progress prediction line. If the point at which L2 intersects (running time 8000 hours) is earlier than the next maintenance schedule, it is possible to make the explanation easier to understand by referring to the figure, such as proposing to advance the inspection time or suggesting parts replacement. it can.

  At that time, a prediction line is created according to the number of measurement results, an inspection date is advanced, and a table for proposing part replacement is created. FIG. 11 is a table showing the correspondence between the number of measurement points, the prediction line creation method, and the inspection in a table format. In FIG. 11, the number of measurement points is divided into one point, two points, three points or more, a method for creating a prediction line, and a response when the prediction line exceeds the wear amount limit predetermined value V2 before the next scheduled inspection date are shown.

  In the case of one point or installation, since the prediction is impossible, the deterioration prediction line L1 and the wear progress prediction line L2 are not created. When there are two measurement points, a deterioration prediction line L1 and a wear progress prediction line L2 are created from the initial measurement value and the second measurement value. If it is determined from the creation result that the predicted line exceeds the wear amount limit predetermined value V2 before the next scheduled inspection date, it is proposed to advance the inspection date and replace the parts.

  When there are three or more measurement points, a prediction line is created using an approximate line or an approximate curve obtained from three or more measurement points. If it is determined that the predicted lines L1 and L2 exceed the wear amount limit predetermined value V2 before the next scheduled inspection date, the inspection date is advanced and the parts are replaced as in the case of two points. Propose.

  FIG. 12 is a diagram showing a life expectancy and wear progress prediction when parts replacement occurs. This prediction diagram is displayed on a display device (not shown), and printed out in the form of a report 20 from the printer 80. As in FIG. 10, the horizontal axis represents travel time, and the vertical axis represents shoe wear. In FIG. 12, the effect of component replacement is displayed on the graph, and the measurement result after component replacement is plotted. Then, the wear progress prediction line L2 before the parts replacement is redrawn from the measurement result immediately after the parts replacement to predict the wear and deterioration progress of the consumables.

  Since the wear progress prediction line L2 may change depending on the local state, the wear progress prediction line L2 is corrected from a new measurement result as needed. In addition, measurement results can be stored in the maintenance data management server 73 and fed back to future maintenance interval designs.

  In addition, the time to reach the required maintenance value or the wear limit limit value is the total travel time predicted to reach the specified value, the remaining time to reach the total travel time, or when each specified value is reached. As long as the time such as the date and time for reaching the predicted total travel time can be specifically estimated, the prediction line may not be set as in this embodiment, and the form of the estimation is particularly limited. It is not a thing.

  Further, in the parts photo block 23 shown in FIG. 3, not only the photos of scratches and the like found during maintenance as shown in FIG. 6 are posted, but also the structure of the braking device 78 from the maintenance data management server 73 as necessary. It is also possible to quote and display the figure. This can lead to the promotion of understanding of parts replacement to customers. Then, as shown in FIG. 7, by describing the gist of parts replacement from the maintenance staff to the customer as a report, the maintenance and parts replacement proposals can be easily and reliably performed.

  Information such as measurement results, graphs, photographs, and explanatory texts as described above is displayed on a display device such as a display provided in the mobile terminal device 75, and the display results are displayed as maintenance work results by an output device such as the printer 80. The report 20 or the like can be output.

  Note that the brake operation characteristic determination unit 77 in the present embodiment can be configured by a CPU, a microcomputer, or the like provided separately from the elevator control device 711, the drive control device 712, and the like. Further, the elevator control device 711, the drive control device 712, or the portable terminal device 75 can also serve as the function.

As described above, according to the present embodiment, the following effects can be obtained.
In the following description of the effects in the embodiment, each component in the present embodiment is indicated by parentheses in each claim or attached with a reference symbol to clarify the correspondence between the two.

1) A braking device 78 that includes an electromagnetic coil 6 and a brake core 7 and presses the brake shoes 3a and 3b attached to the arms 4a and 4b against the brake drum 2 directly connected to the motor to brake the rotating shaft 1 of the motor. The braking device operating characteristic evaluation device 70 includes a displacement detection device 772 (displacement amount detection means) for detecting a displacement amount of the brake core 7 that is operated by energization of the electromagnetic coil 6, and energization of the electromagnetic coil 6. A measuring device 771 (measuring means) for measuring the measured current value, and an operating characteristic of the braking device 78 from the measured value measured by the measuring device 771 corresponding to the displacement detected by the displacement detecting device 772. A brake operation characteristic evaluation device 70 (evaluation means) to be evaluated, a portable terminal 75 that presents an evaluation result by the brake operation characteristic evaluation device 70, and a plug The evaluation result evaluated by the brake operation characteristic evaluation device 70 is displayed on the display of the portable terminal device 75 as, for example, the report 20 or printed out from the printer 80. It becomes possible to present to the customer, and the maintenance result can be easily presented to the customer who does not know the structure of the braking device of the elevator 79 in detail. Along with this, it is possible to easily propose replacement of parts.

2) the measuring device 771 (measuring means), a current value immediately before the amount of displacement detected by the displacement of detection apparatus 772 (the displacement amount detecting means) is maximum is measured, the brake operating characteristic evaluation apparatus 70 (Evaluation means) a brake operation characteristic determination unit that determines the deterioration state of the braking device 78 by comparing the measured current value immediately before the displacement amount becomes maximum with a similar current value in a normal state. 77 (determination means) is included, it is possible to easily determine the progress of deterioration by comparing the current values, and to accurately evaluate the brake operation characteristics.

3) A mobile terminal device 75 and a telephone that can transmit and receive data between the maintenance data management server 73 (storage means) that stores past measurement data by the measurement device 771 (measurement means) and the maintenance data management server 73 A brake line 72 or a radio telephone line 71 (data communication means), and the brake operation characteristic determination unit 77 is connected to the maintenance data management server 73 via the portable terminal device 75 and the telephone line 72 or the radio telephone line 71. Since the deterioration of the operation characteristics of the braking operation is predicted from the past measurement data acquired from the above and similar measurement data obtained by the current measurement, it corresponds to the operation environment and drive state unique to each brake device 78. Deterioration prediction is possible.

4) The brake operation characteristic determination unit 77 (determination unit) calculates the predicted deterioration of the operation characteristic of the braking operation as the deterioration prediction line L1 (prediction line), and the calculated deterioration prediction line L1 and the preset maintenance Since the time when the deterioration of the operation characteristics of the braking operation reaches the required maintenance value V1 is estimated from the required value V1, the structure of the braking device 78 of the elevator 79 and the maintenance situation are not visible to customers This makes it possible to understand when the next maintenance (inspection) is necessary. Along with this, it is possible to propose to the customer the setting of an inspection date that is earlier than planned as necessary.

5) Position detection sensors 773a and 773b for detecting the wear amount of the brake shoes 3a and 3b, a brake operation characteristic determination unit 77 (wear amount detection means), and the position detection sensors 773a and 773b and the brake operation characteristic determination unit 77 A maintenance data management server 73 (abrasion amount storage means) that stores detected past wear amount data and a portable terminal device 75 and a telephone line 72 or a wireless telephone capable of transmitting and receiving data between the maintenance data management server 73 Line 71 (data communication means), and the past wear amount data acquired from the maintenance data management server 73 by the brake operation characteristic determination unit 77 (determination means) via the portable terminal device 75; From the same wear amount data obtained by this measurement, the wear amount of the brake shoes 3a, 3b Since predicting the large, each braking device 78 own operating environment and the brake shoes 3a corresponding to the driving state, it is possible to 3b degradation predictions.

6) The brake operation characteristic determination unit 77 (determination unit) calculates the predicted increase in wear amount as a wear progress prediction line L2 (prediction line), and the calculated wear progress prediction line L2 and a preset wear amount limit prescribed value V2 Toka et before Symbol brake shoes 3a, since the wear amount of the 3b to estimate the time to reach the wear amount limit prescribed value V2, with respect to ignorant customers structure and maintenance actual elevator braking device 78 It is also possible to visually understand when the next part replacement is necessary. Along with this, it is possible to propose to the customer the setting of a part replacement date that is earlier than planned as required.

7) Since the presenting means includes a display (display means) of the portable terminal device 75 that displays the determination result, and a printer 80 (print output means) that prints out the determination result as a (maintenance work result) report 20. When explaining to customers, it is possible to explain visually the state of deterioration of the braking device through visual comparison of progress of consumables and comparison with past data, leading to reduction of labor for customers and maintenance personnel. Can do.

8) The brake device 78 is a drum brake of an elevator 79 that drives a sheave on which a main rope that suspends a car and a counterweight is wound to brake a rotating shaft of an electric motor that causes the car to travel in the vertical direction. Therefore, when the elevator 79 is maintained, the maintenance result can be easily presented to the customer who does not know the structure of the braking device of the elevator 79 in detail, and the setting time of the inspection date can be proposed.

  The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention, and all technical matters included in the technical idea described in the claims are included. The subject of the present invention. The above embodiment shows a preferable example, but those skilled in the art can realize various alternatives, modifications, variations, and improvements from the contents disclosed in this specification, These are included in the technical scope described in the appended claims.

DESCRIPTION OF SYMBOLS 1 Rotating shaft 2 Brake drum 3a, 3b Brake shoe 4a, 4b Arm 6 Electromagnetic coil 7 Brake core 70 Brake operation characteristic evaluation apparatus 71 Radio telephone line 72 Telephone line 73 Maintenance data management server 75 Portable terminal apparatus 77 Brake operation characteristic judgment part 771 Measuring device 772 Displacement detection device 773a, 773b Position detection sensor 78 Braking device 79 Elevator 80 Printer L1 Deterioration prediction line L2 Wear progress prediction line L2
V1 Maintenance Required Default V2 Wear Limit Limit

Claims (7)

Includes an electromagnetic coil and a brake core, a brake shoe attached to the arm presses a brake drum directly connected to the electric motor, a operating characteristic evaluation apparatus of the braking equipment for braking the rotation shaft of the electric motor,
A displacement amount detecting means for detecting a displacement amount of a brake core operated by energization of the electromagnetic coil;
Measuring means for measuring a current value energized in the electromagnetic coil;
Evaluation means for evaluating the operating characteristics of the braking device from the measurement values measured by the measurement means corresponding to the displacement amounts detected by the displacement amount detection means;
Presenting means for presenting an evaluation result by the evaluating means;
Equipped with a,
The measurement means includes a first current value immediately before the displacement amount on the start side of the brake core detected by the displacement amount detection means becomes maximum, and a second current value immediately before the displacement amount on the release side becomes maximum. Measure the current value,
The evaluation means includes determination means for determining a deterioration state of the braking device based on a current width obtained by comparing the first current value and the second current value;
The presenting means includes a maintenance proposal database storing maintenance proposal items to be proposed to a customer, and selects and presents the maintenance proposal items based on the deterioration state determined by the determination means, and evaluates the operating characteristics of the braking device apparatus. The operation characteristic evaluation device for a braking device according to claim 1,
Storage means for storing past measurement data by the measurement means;
Data communication means capable of transmitting and receiving data to and from the storage means;
Further comprising
Braking device that predicts deterioration of operating characteristics of braking operation from past measurement data acquired from the storage unit via the data communication unit and similar measurement data obtained by the current measurement by the determination unit Operating characteristic evaluation device. The operation characteristic evaluation device for a braking device according to claim 2,
The determination means calculates the predicted deterioration of the operation characteristic of the braking operation as a prediction line, and the deterioration of the operation characteristic of the braking operation is determined from the calculated prediction line and a preset required maintenance value. An apparatus for evaluating the operating characteristics of a braking device that estimates the time when the value is reached . The operation characteristic evaluation device for a braking device according to any one of claims 1 to 3 ,
Wear amount detecting means for detecting the wear amount of the brake shoe;
Wear amount storage means for storing past wear amount data detected by the wear amount detection means;
Data communication means capable of transmitting and receiving data to and from the wear amount storage means;
Further comprising
The determination means increases the wear amount of the brake shoe from past wear amount data acquired from the wear amount storage means via the data communication means and similar wear amount data obtained by the current measurement. An operation characteristic evaluation device for a braking device that predicts The operation characteristic evaluation device for a braking device according to claim 4 ,
The determination means calculates the predicted increase in the wear amount as a prediction line, and the wear amount of the brake shoe reaches the wear amount limit specified value from the calculated prediction line and a preset wear amount limit specified value. An apparatus for evaluating the operating characteristics of a braking device that estimates when to perform. An operation characteristic evaluation device for a braking device according to any one of claims 1 to 5 ,
An operating characteristic evaluation device for a braking device, wherein the presenting means includes display means for displaying a determination result and print output means for printing out the determination result . The operation characteristic evaluation device for a braking device according to any one of claims 1 to 3 ,
Operation of the braking device, which is a drum brake of an elevator that drives a sheave on which a main rope that suspends a car and a counterweight is wound to brake the shaft of an electric motor that drives the car vertically Characteristic evaluation device.