WO2023276044A1 - 摩擦係数算出装置及び摩擦係数算出方法 - Google Patents
摩擦係数算出装置及び摩擦係数算出方法 Download PDFInfo
- Publication number
- WO2023276044A1 WO2023276044A1 PCT/JP2021/024745 JP2021024745W WO2023276044A1 WO 2023276044 A1 WO2023276044 A1 WO 2023276044A1 JP 2021024745 W JP2021024745 W JP 2021024745W WO 2023276044 A1 WO2023276044 A1 WO 2023276044A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- friction
- friction coefficient
- brake shoe
- braking surface
- coefficient
- Prior art date
Links
- 238000004364 calculation method Methods 0.000 title claims abstract description 72
- 238000005259 measurement Methods 0.000 claims abstract description 32
- 238000012360 testing method Methods 0.000 claims description 65
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- 238000007689 inspection Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000007769 metal material Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
Definitions
- the present disclosure relates to a friction coefficient calculation device and a friction coefficient calculation method for calculating the friction coefficient between a brake shoe and an object to be braked.
- Patent Document 1 describes an elevator brake shoe that brakes a lifting body.
- This brake shoe has a friction piece made of fine ceramics.
- the friction pieces are in contact with guide rails that guide the elevation of the elevator, and brake the elevator by the frictional force between them and the guide rails.
- the friction piece is provided with a plurality of cone-shaped projections. Each protrusion has a vertex that contacts the guide rail when the lift is braked by the friction piece.
- the friction force due to the excavation term can be adjusted by setting the inclination angle of the side surface of the protrusion.
- the present disclosure has been made in order to solve the above-described problems.
- the purpose is to provide a calculation method.
- a friction coefficient calculation device is a friction coefficient calculation device for calculating a friction coefficient between a brake shoe having a braking surface and an object to be braked against which the braking surface is pressed, wherein the shape of the braking surface
- a friction coefficient calculation method is a friction coefficient calculation method for calculating a friction coefficient between a brake shoe having a braking surface and an object to be braked against which the braking surface is pressed, wherein the shape of the braking surface is acquired by measurement, and the friction coefficient is calculated based on the acquired measurement value and a relational expression representing the relationship between the shape data and the friction coefficient.
- FIG. 1 is a schematic diagram showing an example of a configuration of a friction coefficient calculation device according to Embodiment 1;
- FIG. 1 is a block diagram showing an example of the configuration of a friction coefficient calculation device according to Embodiment 1;
- FIG. 4 is a perspective view showing an example of the configuration of friction pieces provided on the brake shoe used in Embodiment 1.
- FIG. 2 is a diagram showing the configuration of a simulated testing device for a safety device used in Embodiment 1; 4 is a graph showing an example of the relationship between PV value and friction coefficient in Embodiment 1.
- FIG. 7 is a graph showing an example of the relationship between the PV value and the height of protrusions of friction pieces in Embodiment 1.
- Embodiment 4 is a flowchart showing an example of the flow of a friction coefficient calculation method according to Embodiment 1; It is a figure which shows the installation state of the safety device in an actual elevator. 9 is a flow chart showing an example of the flow of a friction coefficient calculation method according to Embodiment 2;
- a friction coefficient calculation device is a device for calculating a friction coefficient between a brake shoe having a braking surface and an object to be braked against which the braking surface of the brake shoe is pressed.
- the friction coefficient calculation method is a method of calculating the friction coefficient between a brake shoe having a braking surface and an object to be braked against which the braking surface of the brake shoe is pressed.
- the brake in the present embodiment constitutes part of the safety device provided in the car of the elevator.
- the body to be braked in the present embodiment is a guide rail that guides the elevator car.
- the guide rail is braked relative to the car by pressing the braking surface of the brake shoe provided on the car against the guide rail. This brakes the car relative to the guide rails.
- FIG. 1 is a schematic diagram showing an example of the configuration of the friction coefficient calculation device according to the present embodiment.
- FIG. 2 is a block diagram showing an example of the configuration of the friction coefficient calculation device according to this embodiment.
- the friction coefficient calculation device has a measurement section 10, a calculation section 21, a storage section 22 and an output section 23.
- FIG. 1 is a schematic diagram showing an example of the configuration of the friction coefficient calculation device according to the present embodiment.
- FIG. 2 is a block diagram showing an example of the configuration of the friction coefficient calculation device according to this embodiment.
- the friction coefficient calculation device has a measurement section 10, a calculation section 21, a storage section 22 and an output section 23.
- the measurement unit 10 is configured to acquire the measured value of the shape data regarding the shape of the braking surface 31 of the brake shoe 30 by actual measurement.
- a plurality of friction pieces 32 are provided on the braking surface 31 of the brake shoe 30 .
- Each of the friction pieces 32 is made of a material having higher hardness than the material of the body to be braked.
- the body to be braked is made of, for example, a metal material.
- Each of the friction pieces 32 is made of, for example, fine ceramics having higher hardness than metal material.
- FIG. 3 is a perspective view showing an example of the configuration of friction pieces provided on the brake shoe used in the present embodiment.
- each of the friction pieces 32 has a plurality of projections 33 formed thereon.
- Each of the projections 33 is formed in the shape of a regular quadrangular pyramid with a height H.
- Each of the protrusions 33 has an apex 33a. The apex 33a contacts the body to be braked during the braking operation.
- Each of the protrusions 33 may have a pyramidal shape other than a square pyramidal shape.
- each of the projections 33 bites into the body to be braked by the load applied to the brake shoe 30 . Since each of the projections 33 digs up the body to be braked along the braking direction, a frictional force is generated due to the digging up.
- the frictional force due to excavation is expressed by the product of the plastic flow pressure of the metal material forming the body to be braked and the projected area in the braking direction of the portion of each projection 33 that bites into the body to be braked.
- the projected area depends on the shape of the protrusion 33 and the depth of bite of the protrusion 33 into the body to be braked. The coefficient of friction is determined by dividing the frictional force by the load.
- the measurement unit 10 has a sensor head 11 and a control arithmetic unit 12.
- the sensor head 11 is configured to measure dimensions representing the shape of the braking surface 31 of the brake shoe 30 .
- the sensor head 11 is configured to measure the height H of the protrusion 33 formed on the friction piece 32 .
- the sensor head 11 is fixed by a fixing jig 15 .
- the sensor head 11 is connected to the control computing device 12 via a cable 13 .
- the brake shoe 30 is supported by the feeding jig 16 when the height H of the projection 33 is measured.
- the brake shoe 30 can be moved within the measurement range of the sensor head 11 by means of the feeding jig 16 . Thereby, the sensor head 11 can measure the height H of all the protrusions 33 formed on the plurality of friction pieces 32 .
- the control arithmetic device 12 is configured to control the entire measuring section 10 and perform necessary arithmetic operations when measuring the height H of the projection 33 .
- the control arithmetic device 12 generates shape data of the braking surface 31 based on the measurement signal input from the sensor head 11 .
- the shape data of the braking surface 31 includes data of the height H of the protrusion 33 .
- Control computing unit 12 is connected to computing unit 20 via cable 14 .
- the computing device 20 is a computer comprising a processor, a storage device, an input/output interface circuit, a communication device, a display device, etc. as a hardware configuration.
- the computing device 20 has a calculator 21 , a storage 22 and an output 23 .
- the storage unit 22 is configured by the storage device of the computing device 20 .
- the storage unit 22 stores in advance a relational expression representing the relationship between the shape data of the braking surface 31 and the coefficient of friction. The relationship between the shape data of the braking surface 31 and the coefficient of friction will be described later.
- the calculation unit 21 is configured by the processor of the calculation device 20 .
- the calculation unit 21 is configured to calculate the coefficient of friction based on the measured value of the shape data acquired by the measurement unit 10 and the relational expression stored in the storage unit 22 .
- the output unit 23 is configured by the display device of the computing device 20 .
- the output unit 23 is configured to visually output various information.
- the information output by the output unit 23 includes the coefficient of friction calculated by the calculation unit 21, the measured value of the shape data acquired by the measurement unit 10, the necessity of replacement of the brake shoe 30, and the like.
- FIG. 4 is a diagram showing the configuration of a safety device simulation test device used in the present embodiment.
- This simulation test device is a device for performing a friction test for measuring the coefficient of friction between the brake shoe test body 30a and the guide rail 42a.
- the brake shoe test body 30a is a test body of the brake shoe 30.
- the brake shoe test piece 30a has a configuration similar to that of the brake shoe 30, that is, a configuration corresponding to that of the brake shoe 30. As shown in FIG. That is, the brake shoe test piece 30a is made of the same material as that of the brake shoe 30 and is manufactured to have substantially the same structure as that of the brake shoe 30 . Data on the height of the protrusions formed on the braking surface of the brake shoe test piece 30a is obtained in advance using the measurement unit 10 of the friction coefficient calculation device before the friction test using the simulation test device.
- the guide rail 42a is a damped body test piece that serves as a damped body test piece.
- the guide rail 42a has the same configuration as the guide rail 42 that guides the car 60 of the actual elevator, that is, has a configuration corresponding to the guide rail 42.
- the guide rail 42a is made of the same material as the guide rail 42 and is manufactured to have substantially the same structure as the guide rail 42. As shown in FIG.
- the simulation test device is provided within the test shaft 40.
- the simulation test device has a test body 41 and guide rails 42a.
- the guide rail 42 a extends vertically within the test shaft 40 .
- the guide rail 42a is configured to guide the specimen 41 in the vertical direction.
- the test piece 41 has a safety device 43 having a brake shoe test piece 30a and a weight frame 44.
- the safety device 43 and the weight frame 44 are integrally provided.
- a weight 45 is loaded on the weight frame 44 .
- the mass borne by the safety device 43 is adjusted by the weight 45 .
- a hanging shaft 46 is provided on the upper portion of the weight frame 44 .
- the suspension shaft 46 is connected to the suspension tool 52 via the disconnecting device 47 .
- a lifting machine 50 is provided above the test shaft 40 .
- One end of a wire rope 51 is connected to the lifting machine 50 .
- the hanger 52 is provided at the other end of the wire rope 51 .
- the operation of the hoisting machine 50 causes the specimen 41 to move vertically along the guide rails 42a.
- the disconnecting device 47 is operated, the sling 52 is released from the sling shaft 46 .
- the specimen 41 is separated from the wire rope 51 and freely falls along the guide rail 42a.
- a speed governor 53 is provided on the upper portion of the test shaft 40 .
- a tension wheel 54 is provided below the test shaft 40 .
- a governor rope 55 is wound between the governor 53 and the tension wheel 54 .
- a governor rope 55 circulates between the governor 53 and the pulley 54 .
- the safety device 43 is provided with a lever 48 that operates the safety device 43 .
- An operating end portion 56 for operating the lever 48 is fixed to the governor rope 55 .
- the speed governor rope 55 is circulated and the vertical position of the operating end portion 56 is adjusted.
- the position of the operating end portion 56 is adjusted to a position at which the safety device 43 is operated.
- the governor rope 55 is fixed using the brake of the governor 53 . Thereby, the operating end portion 56 is fixed at a position for operating the safety device 43 .
- test body 41 is moved above the position of the operating end portion 56 by the lifting machine 50 .
- the position of the test object 41 is set such that the speed of the test object 41 free falling from that position is a predetermined speed at the position of the manipulating end 56 .
- the detachment device 47 is operated to drop the specimen 41.
- the lever 48 is operated by the operating end 56 to operate the safety device 43 .
- the safety device 43 By operating the safety device 43, the braking surface of the brake shoe test piece 30a is pressed against the guide rail 42a.
- the test piece 41 is braked by the frictional force between the brake shoe test piece 30a and the guide rail 42a.
- the deceleration of the test piece 41 is measured during the period from the predetermined speed to zero. Based on the measured deceleration, the coefficient of friction between brake shoe test piece 30a and guide rail 42a is calculated.
- FIG. 5 is a graph showing an example of the relationship between the PV value and the coefficient of friction in this embodiment.
- the horizontal axis of FIG. 5 represents the PV value (MPa ⁇ m/s).
- the PV value is the product of the surface pressure applied from the brake shoe test piece 30a to the guide rail 42a and the operating speed of the guide rail 42a relative to the brake shoe test piece 30a at the start of braking.
- the surface pressure is a value obtained by dividing the load applied from the brake shoe test piece 30a to the guide rail 42a by the contact area between the brake shoe test piece 30a and the guide rail 42a.
- the PV value is a value determined by, for example, braking load conditions.
- the vertical axis in FIG. 5 represents the average coefficient of friction between the brake shoe test piece 30a and the guide rail 42a.
- the relationship between the PV value and the average coefficient of friction is obtained by a friction test using a simulated test apparatus.
- the relationship between the PV value and the average friction coefficient is represented by an approximate curve indicated by a dashed line in the graph. Therefore, the coefficient of friction can be estimated by substituting the PV value into the equation of this approximation curve.
- FIG. 6 is a graph showing an example of the relationship between the PV value and the height of the projection of the friction piece in this embodiment.
- the horizontal axis of FIG. 6 represents the PV value (MPa ⁇ m/s).
- the vertical axis in FIG. 6 represents the average height ( ⁇ m) of the protrusions 33 of the friction pieces 32 .
- the height of the protrusions 33 tends to decrease as the PV value increases.
- the relationship between the PV value and the height of the protrusion 33 is represented by an approximate straight line indicated by a dashed line in the graph.
- a relational expression between the height of the protrusion 33 and the coefficient of friction is obtained based on the relationship between the PV value and the height of the protrusion 33 shown in FIG. 6 and the relationship between the PV value and the coefficient of friction shown in FIG.
- This relational expression is stored in advance in the storage unit 22 of the friction coefficient calculation device.
- FIG. 7 is a flow chart showing an example of the flow of the friction coefficient calculation method according to this embodiment. Each process shown in FIG. 7 is executed by the calculation unit 21 of the friction coefficient calculation device.
- the shape data of the braking surface 31 of the brake shoe 30 data of the height of the protrusion 33 is used.
- the measurement unit 10 acquires the measured value of the height data of the projection 33 by actual measurement.
- the calculation unit 21 acquires the measured value of the height data of the projection 33 from the measurement unit 10 .
- the calculation unit 21 acquires from the storage unit 22 the relational expression between the height data of the protrusion 33 and the coefficient of friction.
- step S3 the calculation unit 21 calculates the coefficient of friction based on the measured value of the height data of the protrusion 33 obtained from the measurement unit 10 and the relational expression obtained from the storage unit 22.
- step S ⁇ b>4 the calculation unit 21 performs processing for outputting the calculated coefficient of friction to the output unit 23 . Thereby, the friction coefficient is output by the output unit 23 .
- Fig. 8 is a diagram showing the installation state of safety devices in an actual elevator. As shown in FIG. 8, the car 60 is guided by a pair of guide rails 42 . Each of the guide rails 42 extends vertically.
- a pair of emergency stop devices 43 are provided at the bottom of the car 60 . In FIG. 8 only one safety device 43 is shown. Each safety device 43 is configured to brake the running of the car 60 in an emergency.
- Each of the safety devices 43 has a pair of brakes 30, a pair of quills 61, and a compression spring 62.
- a braking surface 31 of one brake shoe 30 faces one surface of the guide rail 42 .
- a braking surface 31 of the other brake shoe 30 faces the other surface of the guide rail 42 .
- the spring force of the push spring 62 presses the braking surface 31 of one brake shoe 30 against one surface of the guide rail 42, and the braking surface 31 of the other brake shoe 30 moves toward the guide rail. It is pressed against the other side of 42 . Thereby, a braking force for braking the car 60 against the guide rails 42 is obtained.
- the braking force for braking the car 60 is the sum of the braking forces generated between the four brake elements 30 and the four surfaces of the guide rails 42 . Therefore, in order to predict the braking force for braking the car 60 with high accuracy, it is considered effective to use the average value of the heights of the projections 33 of the four brake pads 30 . Therefore, in the present embodiment, the measured values of the height of the protrusions 33 in each of the four brake pads 30 are measured, and the average height of the protrusions 33, which is the average value of these measured values, is obtained. Then, the coefficient of friction is calculated based on the average height of the protrusions 33 and the relational expression. As a result, the coefficient of friction between the brake shoe and the body to be braked during the braking operation can be calculated with higher accuracy.
- an elevator provided with four brakes 30 is taken as an example, but even if the number of brakes 30 is other than four, it is possible to calculate the friction coefficient based on the same concept.
- the friction coefficient calculation device is a device that calculates the friction coefficient between the brake shoe 30 having the braking surface 31 and the guide rail 42 against which the braking surface 31 is pressed.
- the friction coefficient calculation device includes a storage section 22 , a measurement section 10 and a calculation section 21 .
- the storage unit 22 stores in advance a relational expression representing the relationship between the height data of the projection 33 and the coefficient of friction.
- the measurement unit 10 is configured to acquire the measured value of the height data of the projection 33 by measurement.
- the calculation unit 21 is configured to calculate the coefficient of friction based on the measured value of the height data of the projection 33 acquired by the measurement unit 10 and the relational expression stored in the storage unit 22.
- the guide rail 42 is an example of a member to be braked.
- Data on the height of the projection 33 is an example of shape data on the shape of the braking surface.
- the relational expression is obtained by a test using a brake shoe test piece 30a, which is a test piece of the brake shoe 30, and a guide rail 42a, which is a test piece of the guide rail 42.
- the guide rail 42a is an example of a damped body test piece. According to this configuration, a highly accurate relational expression can be obtained, so that the coefficient of friction between the brake shoe and the body to be braked during the braking operation can be calculated with higher accuracy.
- the relational expression is obtained from the first relation and the second relation.
- the first relationship is shape data relating to the shape of the braking surface of the brake shoe test piece 30a, the surface pressure applied from the brake shoe test piece 30a to the guide rail 42a during braking, and the brake shoe test piece of the guide rail 42a at the start of braking. and the product of the operating speed with respect to 30a.
- the second relationship is the relationship between the product of the surface pressure and the operating speed, and the coefficient of friction between the brake shoe test piece 30a and the guide rail 42a.
- the brake shoe 30 has projections 33 formed on the braking surface 31 .
- the shape data includes height data of the projection 33 . According to this configuration, it is possible to easily acquire the measured value of the shape data.
- the friction coefficient calculation device further includes an output unit 23 that displays the friction coefficient calculated by the calculation unit 21. According to this configuration, the operator can easily grasp the calculated coefficient of friction.
- the friction coefficient calculation method is a method of calculating the friction coefficient between the brake shoe 30 having the braking surface 31 and the guide rail 42 against which the braking surface 31 is pressed.
- the friction coefficient calculation method acquires the height data of the protrusions 33 by measurement, and the acquired height data of the protrusions 33 and the relational expression representing the relationship between the height of the protrusions 33 and the friction coefficient. It calculates the coefficient.
- the guide rail 42 is an example of a member to be braked.
- Data on the height of the projection 33 is an example of shape data on the shape of the braking surface. According to this method, the same effects as those obtained by the friction coefficient calculation device can be obtained.
- Embodiment 2 A friction coefficient calculation device and a friction coefficient calculation method according to Embodiment 2 will be described.
- the braking performance of the safety device 43 may be evaluated in pre-completion inspections of elevators, periodic inspections of elevators, and the like. When the braking performance test is performed multiple times, the shape of the protrusion 33 may change due to wear of the friction piece 32 . Also, if a braking performance test is performed with foreign matter such as sand adhering to the friction piece 32 , deformation of the friction piece 32 may cause a change in the shape of the protrusion 33 .
- each brake shoe 30 is removed from the safety device 43, the height of the protrusion 33 on each brake shoe 30 is measured, and the average height of the protrusions 33 is substituted into the relational expression. By doing so, it is possible to estimate the coefficient of friction of the safety device 43 during the braking operation with high accuracy.
- FIG. 9 is a flow chart showing an example of the flow of the friction coefficient calculation method according to the present embodiment. Each process shown in FIG. 9 is executed by the calculation unit 21 of the friction coefficient calculation device.
- the shape data of the braking surface 31 of the brake shoe 30 data of the height of the protrusion 33 is used. Steps S11 to S13 in FIG. 9 are the same as steps S1 to S3 in FIG. 7, so description thereof will be omitted.
- the calculator 21 determines whether or not the brake shoe 30 needs to be replaced based on the calculated friction coefficient.
- the storage unit 22 stores data of the lower limit value and the upper limit value of the allowable coefficient of friction.
- the calculation unit 21 determines that replacement of the brake shoe 30 is unnecessary when the calculated coefficient of friction is equal to or more than the lower limit value and equal to or less than the upper limit value.
- the calculator 21 determines that the brake shoe 30 needs to be replaced when the calculated friction coefficient is lower than the lower limit value or when the calculated friction coefficient is higher than the upper limit value.
- step S15 the calculation unit 21 performs processing for causing the output unit 23 to output information indicating whether or not the brake shoe 30 needs to be replaced. As a result, the output unit 23 outputs whether or not the brake shoe 30 needs to be replaced.
- the calculation unit 21 is configured to determine whether the brake shoe 30 needs to be replaced based on the calculated friction coefficient. With this configuration, it is possible to appropriately determine whether or not the brake shoe 30 needs to be replaced based on the coefficient of friction.
- height data of the projections 33 is used as an example of shape data relating to the shape of the braking surface 31 .
- shape data other data can be used as long as it is numerical data representing the shape of the braking surface 31 .
- the coefficient of friction between the brake 30 of the safety device of the elevator and the guide rail 42 is calculated.
- the friction coefficient calculation device of the above embodiment can also calculate the friction coefficient of a braking device used in equipment other than elevators.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Automation & Control Theory (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Braking Arrangements (AREA)
Abstract
Description
本開示に係る摩擦係数算出方法は、制動面を有する制動子と、前記制動面が押し付けられる被制動体と、の間の摩擦係数を算出する摩擦係数算出方法であって、前記制動面の形状に関する形状データの測定値を測定により取得し、取得した前記測定値と、前記形状データと前記摩擦係数との関係を表す関係式と、に基づいて前記摩擦係数を算出する。
実施の形態1に係る摩擦係数算出装置及び摩擦係数算出方法について説明する。本実施の形態に係る摩擦係数算出装置は、制動面を有する制動子と、制動子の制動面が押し付けられる被制動体と、の間の摩擦係数を算出する装置である。本実施の形態に係る摩擦係数算出方法は、制動面を有する制動子と、制動子の制動面が押し付けられる被制動体と、の間の摩擦係数を算出する方法である。
実施の形態2に係る摩擦係数算出装置及び摩擦係数算出方法について説明する。昇降機の竣工前検査、昇降機の定期検査等において、非常止め装置43の制動性能が評価される場合がある。制動性能の試験が複数回実施されると、摩擦片32の摩耗により、突起33の形状に変化が生じる可能性がある。また、砂などの異物が摩擦片32に付着した状態で制動性能の試験が実施された場合にも、摩擦片32の変形により、突起33の形状に変化が生じる可能性がある。
Claims (7)
- 制動面を有する制動子と、前記制動面が押し付けられる被制動体と、の間の摩擦係数を算出する摩擦係数算出装置であって、
前記制動面の形状に関する形状データと、前記摩擦係数と、の関係を表す関係式があらかじめ記憶されている記憶部と、
前記形状データの測定値を測定により取得する測定部と、
前記測定部により取得された前記測定値と、前記記憶部に記憶されている前記関係式と、に基づいて前記摩擦係数を算出する算出部と、
を備える摩擦係数算出装置。 - 前記関係式は、前記制動子の試験体である制動子試験体と、前記被制動体の試験体である被制動体試験体と、を用いた試験により得られている請求項1に記載の摩擦係数算出装置。
- 前記関係式は、
前記制動子試験体の制動面の形状に関する形状データと、制動時に前記制動子試験体から前記被制動体試験体に加えられる面圧と制動開始時の前記被制動体試験体の前記制動子試験体に対する動作速度との積と、の関係と、
前記面圧と前記動作速度との積と、前記制動子試験体と前記被制動体試験体との間の前記摩擦係数と、の関係と、により得られている請求項2に記載の摩擦係数算出装置。 - 前記制動子は、前記制動面に形成された突起を有しており、
前記形状データは、前記突起の高さのデータを含んでいる請求項1~請求項3のいずれか一項に記載の摩擦係数算出装置。 - 前記算出部で算出された前記摩擦係数を出力する出力部をさらに備える請求項1~請求項4のいずれか一項に記載の摩擦係数算出装置。
- 前記算出部は、算出された前記摩擦係数に基づいて前記制動子の交換要否を判定する請求項1~請求項5のいずれか一項に記載の摩擦係数算出装置。
- 制動面を有する制動子と、前記制動面が押し付けられる被制動体と、の間の摩擦係数を算出する摩擦係数算出方法であって、
前記制動面の形状に関する形状データの測定値を測定により取得し、
取得した前記測定値と、前記形状データと前記摩擦係数との関係を表す関係式と、に基づいて前記摩擦係数を算出する摩擦係数算出方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2022513140A JP7086513B1 (ja) | 2021-06-30 | 2021-06-30 | 摩擦係数算出装置及び摩擦係数算出方法 |
PCT/JP2021/024745 WO2023276044A1 (ja) | 2021-06-30 | 2021-06-30 | 摩擦係数算出装置及び摩擦係数算出方法 |
CN202180099786.5A CN117581088A (zh) | 2021-06-30 | 2021-06-30 | 摩擦系数计算装置以及摩擦系数计算方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2021/024745 WO2023276044A1 (ja) | 2021-06-30 | 2021-06-30 | 摩擦係数算出装置及び摩擦係数算出方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023276044A1 true WO2023276044A1 (ja) | 2023-01-05 |
Family
ID=82067844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2021/024745 WO2023276044A1 (ja) | 2021-06-30 | 2021-06-30 | 摩擦係数算出装置及び摩擦係数算出方法 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP7086513B1 (ja) |
CN (1) | CN117581088A (ja) |
WO (1) | WO2023276044A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09104572A (ja) * | 1995-10-09 | 1997-04-22 | Hitachi Ltd | エレベータの非常止め装置 |
JPH11237239A (ja) * | 1998-02-19 | 1999-08-31 | Nec Corp | 表面の評価装置及び評価方法 |
JP2001289270A (ja) * | 2000-04-04 | 2001-10-19 | Mitsubishi Electric Corp | 制動装置および昇降体の制動装置 |
JP2009002926A (ja) * | 2007-05-22 | 2009-01-08 | Jfe Steel Kk | プレス成形状態推定方法及び成形シミュレーション用の摩擦係数取得方法 |
JP2014084649A (ja) * | 2012-10-24 | 2014-05-12 | Bridgestone Corp | 地盤特性取得方法、地盤特性取得装置、及び地盤特性取得プログラム |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4611098B2 (ja) * | 2005-04-26 | 2011-01-12 | 学校法人同志社 | 微小凹凸を有するエラストマーの摩擦特性評価方法 |
-
2021
- 2021-06-30 WO PCT/JP2021/024745 patent/WO2023276044A1/ja active Application Filing
- 2021-06-30 CN CN202180099786.5A patent/CN117581088A/zh active Pending
- 2021-06-30 JP JP2022513140A patent/JP7086513B1/ja active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09104572A (ja) * | 1995-10-09 | 1997-04-22 | Hitachi Ltd | エレベータの非常止め装置 |
JPH11237239A (ja) * | 1998-02-19 | 1999-08-31 | Nec Corp | 表面の評価装置及び評価方法 |
JP2001289270A (ja) * | 2000-04-04 | 2001-10-19 | Mitsubishi Electric Corp | 制動装置および昇降体の制動装置 |
JP2009002926A (ja) * | 2007-05-22 | 2009-01-08 | Jfe Steel Kk | プレス成形状態推定方法及び成形シミュレーション用の摩擦係数取得方法 |
JP2014084649A (ja) * | 2012-10-24 | 2014-05-12 | Bridgestone Corp | 地盤特性取得方法、地盤特性取得装置、及び地盤特性取得プログラム |
Also Published As
Publication number | Publication date |
---|---|
JPWO2023276044A1 (ja) | 2023-01-05 |
CN117581088A (zh) | 2024-02-20 |
JP7086513B1 (ja) | 2022-06-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5025860B2 (ja) | エレベータの診断方法 | |
EP1741658A1 (en) | Elevator apparatus | |
CN106256746B (zh) | 控制装置和方法 | |
JP2008001524A (ja) | エレベータのブレーキ装置の検査方法、エレベータ装置を稼働状態に移行させるための方法、および稼働状態への移行を実行するための装置 | |
JP2010043982A (ja) | 動摩擦係数測定装置及び方法 | |
WO2016190281A1 (ja) | エレベータ装置、その制御方法、及びエレベータ用遠隔地状態判定装置 | |
JP5079351B2 (ja) | エレベータ装置 | |
WO2023276044A1 (ja) | 摩擦係数算出装置及び摩擦係数算出方法 | |
JP6667659B2 (ja) | エレベーター装置、および秤装置の校正方法 | |
Lonkwic | Influence of friction drive lift gears construction on the length of braking distance | |
JP2016199378A (ja) | エレベータの非常止め装置の隙間測定装置 | |
JP4653835B2 (ja) | 動摩擦係数測定装置及び方法 | |
RU2618862C2 (ru) | Способ контроля параметров движения подъемного устройства | |
CN105984773B (zh) | 用于检测多个电梯绳索的总载荷的绳索载荷检测装置 | |
JP6437143B2 (ja) | エレベータの秤装置 | |
JP4783450B2 (ja) | 動摩擦係数測定装置及び方法 | |
JP5907912B2 (ja) | エレベータ用レールの試験装置および試験方法 | |
CN109484942B (zh) | 用于曳引绳断裂检测并触发制动的装置及方法 | |
JP7223142B2 (ja) | エレベーターの非常止め装置、並びにエレベーターの非常止め装置の点検装置 | |
CN111232775B (zh) | 轿厢的重量计测方法以及装置 | |
JP5066547B2 (ja) | 動摩擦係数測定装置及び方法 | |
JP7114991B2 (ja) | エレベーターのブレーキライニングの測定治具 | |
JP2015196599A (ja) | エレベーターの制動装置及びライニングの摩耗量計測方法 | |
KR20160081456A (ko) | 소음진동계를 이용한 엘리베이터의 승강카 및 균형추 자중측정방법 | |
JP5227250B2 (ja) | 動摩擦係数測定装置及び方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 2022513140 Country of ref document: JP Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21948351 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202180099786.5 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 21948351 Country of ref document: EP Kind code of ref document: A1 |