JP6094516B2 - Elevator equipment - Google Patents

Description

  The present invention relates to an elevator apparatus having a function of detecting an elevator load mass.

  In some elevator apparatuses, an elastic body is installed between the car frame and the car floor or at the rope end of the main rope, and the loading mass of the car is detected from the expansion and contraction of the elastic body. In these cases, the spring constant of the elastic body may fluctuate due to ambient temperature or aging, and an error may occur in the detected loaded mass. In contrast, when the car is unloaded, the car is moved up and down at a predetermined acceleration, and the spring constant is calculated from the amount of deformation of the elastic body and the weight of the car at that time, and the change in the spring constant is corrected. There is something. (For example, see Patent Document 1)

JP 2008-63108 A

  In an elevator apparatus having a conventional loading mass detection function, there is a problem that the car needs to be unloaded when correcting the spring constant of the elastic body.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator apparatus capable of correcting the spring constant regardless of the loaded mass in the car.

An eleverter device according to the present invention detects an amount of load in a car from an elastic body that deforms according to the load in the car room, a deformation amount detector that measures the amount of deformation of the elastic body, and an output of the deformation amount detector. A loading mass detection unit, the loading mass detection unit has a spring constant calculation unit, the spring constant calculation unit of each of the deformation amount detection unit at the time of acceleration when the cab is accelerated at three different accelerations The spring constant of the elastic body is updated using the difference between the output and the output of the deformation amount detection unit when the cab is stationary, and the load mass detection unit calculates from the output of the deformation amount detection unit and the spring constant. This is to detect the loaded mass in the car room.

According to the present invention, it is possible to correct the spring constant regardless of the load weight in the multiplication Rikago.

It is a block diagram of the elevator apparatus by Embodiment 1 of this invention. It is detail drawing of the elevator apparatus by Embodiment 1 of this invention. It is a figure for demonstrating the output of the deformation | transformation amount detection part when the car is stationary in the elevator apparatus by Embodiment 1 of this invention. It is a figure for demonstrating the output variation | change_quantity of the deformation | transformation amount detection part when the car is accelerating in the elevator apparatus by Embodiment 1 of this invention, and when it is stationary. It is a figure for demonstrating the secular change of the output variation | change_quantity of the deformation | transformation amount detection part in the elevator apparatus by Embodiment 1 of this invention. It is a flowchart which shows the update method of the spring constant in the elevator apparatus by Embodiment 1 of this invention. It is a figure for demonstrating operation | movement of the elevator apparatus by Embodiment 4 of this invention. It is a flowchart for demonstrating operation | movement of the elevator apparatus by Embodiment 5 of this invention. It is a block diagram of the elevator apparatus by Embodiment 6 of this invention. It is a block diagram of the elevator apparatus by Embodiment 7 of this invention. It is a block diagram of the elevator apparatus by Embodiment 8 of this invention.

Embodiment 1
FIG. 1 shows an example of an elevator apparatus according to Embodiment 1 of the present invention. In the elevator apparatus according to Embodiment 1 of the present invention, a machine room 2 is provided in the upper part of the hoistway 1. The machine room 2 is provided with a hoisting machine 4 having a driving sheave 3 and a control panel 5 that controls the hoisting machine 4 to control the operation of the elevator. A car 6 is provided in the hoistway 1 so as to be movable in the vertical direction. A suspension body 7 that suspends a car 6 is wound around the driving sheave 3. The driving sheave 3 is rotated by the motor driving force of the hoisting machine 4, and the car 6 moves up and down in the hoistway 1 by the rotation of the driving sheave 3.

  Information on the amount of deformation of the elastic body, which will be described later, is output from the car 6 and sent to the loaded mass detector 8. The loaded mass detection unit 8 outputs the loaded mass of the car 6. Further, the loading mass detection unit 8 instructs the control panel 5 to drive the car 6 when updating a spring constant of an elastic body to be described later.

  FIG. 2 is a view for explaining details of the elevator apparatus shown in FIG. 1. The car 6 includes a car frame 9, a car room 10, an elastic body 11, and a deformation amount detection unit 12. The car frame 9 is suspended by a suspension body 7, and a car room 10 including a car floor is installed via an elastic body 11. The elastic body 11 suppresses vibration of the car room 10 and is a vibration-proof rubber, a leaf spring, a coil spring, or the like. In Embodiment 1 of the present invention, the spring constant of the elastic body 11 is k. The deformation amount detection unit 12 detects the deformation amount of the elastic body 11 and is a displacement sensor or the like. The deformation amount detection unit 12 outputs the distance x between the car frame 9 and the car room 10 as the deformation amount of the elastic body 11, and the output is sent to the load mass detection unit 8.

  The loaded mass detection unit 8 includes a loaded mass calculation unit 13 and a spring constant calculation unit 14. The loading mass calculation unit 13 obtains and outputs the loading mass of the cab 10 based on the deformation amount information of the elastic body 11 that is the output of the deformation amount detection unit 12. The spring constant calculation unit 14 obtains the value of the spring constant of the elastic body 11 used in the loaded mass calculation unit 13. The loaded mass detection unit 8 can be realized by a microcomputer, for example. Further, the loading mass calculation unit 13 and the spring constant calculation unit 14 issue an instruction to accelerate the car 6 to the control panel 9 as necessary.

Next, the operation of the loaded mass detection unit 8 will be described. First, a situation is assumed in which the loaded mass in the cab 10 is known in advance. FIG. 3 is a diagram for explaining the operation of the elevator apparatus according to the first embodiment of the present invention in a situation where the car 6 is stationary and the loading mass in the car room 10 is known in advance. A value payload m _c cab 10 is the output of the deformation amount detector 12 when zero is indicated by a point A, the output payload of the car chamber 10 of the deformation amount detector 12 when the BL Is a value indicated by point B, a straight line connecting the two points is recorded as a relational expression indicating the spring constant k of the elastic body 11. For example, BL may be half of the rated load mass, or any value as long as it is a non-zero value. When the distance x between the car frame 9 and the car room 10 is obtained by the deformation amount detection unit 12, the loading mass in the car room 10 can be obtained by applying the relational expression obtained above.

At this time, when the loaded mass in the car room 10 is m _c , the spring constant of the elastic body 11 is k, and the deformation amount of the elastic body 11 is x, the distance between the car frame 9 and the car room 10 is x. These relationships are expressed by the following equations.

Here, M _f is the mass of the cab 10 and g is the acceleration of gravity. Figure 3 shows the relationship of Equation (1), the slope of the straight line shown in FIG. 3 is a g / k, payload m _c cab 10 is deformation amount detector 12 when zero The output x is M _f g / k.

When formula (1) is transformed and formula for obtaining m _c from x is obtained, it is as follows.

In the load mass calculation unit 13, the load mass m _c in the cab 10 is obtained from the output x of the deformation amount detection unit 12 using the equation (2) and is output.

The spring constant k of the elastic body 11 fluctuates due to changes in temperature and humidity, changes over time, and the like. As a result, the coefficient of equation (2) changes. Therefore, in order to accurately obtain the loaded mass m _c in the cab 10 using the equation (2), it is necessary to periodically update the value of the spring constant k of the elastic body 11 in the spring constant calculator 14. . Below, the update method of the spring constant k of the elastic body 11 in the elevator apparatus by Embodiment 1 of this invention is shown.

  In the elevator apparatus according to Embodiment 1 of the present invention, the distance between the car frame 9 and the car room 10 when the car 6 is accelerated at a constant acceleration is measured x, and the car 6 is accelerated at different accelerations. The spring constant k of the elastic body 11 is obtained by measuring the distance x.

When loading capacity cab 10 is accelerated at the acceleration α of the cage 6 ride when m _c upward, the distance x _acc the car frame 9 and the cab 10 is expressed as follows.

  Therefore, the difference Δx in the output of the deformation amount detection unit 12 between when the car 6 is accelerated at an acceleration α and when it is stationary is expressed as follows.

Figure 4 is shows a state in which the loading mass m _c cab 10 is changed in the equation (4), the slope of the line shown in FIG. 4 is a alpha / k. The value of Δx when loading capacity car room 10 m _c is zero, a M _f α / k. Slope in Figure 4, when the acceleration α is known, set the load mass m _c two different weight of the cab 10, in the stationary state and when the acceleration in the acceleration α of the deformation amount detector 12 By obtaining an output, the spring constant k can be detected.

  Next, assuming that the spring constant k of the elastic body 11 changes to k ′ due to secular change, the state at that time will be described with reference to FIG. In FIG. 5, a solid line indicates a state where the spring constant of the elastic body 11 is k at the time of installation or the like, and a broken line indicates a state where the spring constant is changed to k ′ due to secular change.

  In “at the time of installation” in FIG. 5, the difference Δx in the output of the deformation amount detection unit 12 between when the car 6 is accelerated at an acceleration α and when it is stationary is expressed by Expression (4). On the other hand, when the spring constant changes to k ′ due to secular change, Δx is expressed as follows.

Here, the loading mass m _c in FIG. 5, the spring constant k of the elastic body 11, and the mass M _f of the cage 10 are unknown numbers m _c ′, k ′, and M _f ′, respectively. If there is a difference Δx ₁ between the output of the deformation detector 12 when the car 6 is accelerated at the acceleration α ₁ and when it is stationary, the equation (4) is as follows.

Here, since α ₁ is a set value and Δx ₁ is a measured value, the value can be determined. Therefore, the spring constant calculation unit 14 instructs the control panel 5 to accelerate the car 6 at different accelerations α ₁ , α ₂ , and α ₃ , and is stationary when the acceleration is accelerated at each acceleration. The difference Δx ₁ , Δx ₂ , Δx ₃ of the output of the deformation amount detection unit 12 at the time is determined, and from these values, a total of three equations are created by combining Equation (5) and the following two equations By solving simultaneous equations composed of these three equations, three unknown numbers m _c ′, k ′, and M _f ′ are obtained.

FIG. 6 is a flowchart showing a method for updating the spring constant k of the elastic body 11 in the spring constant calculation unit 14. In step S11, the output of the deformation amount detection unit 12 when the car 6 is stationary is acquired. In steps S12, S13, and S14, the car 6 is accelerated with accelerations α ₁ , α ₂ , and α ₃ , and the output of the deformation amount detection unit 12 during acceleration is acquired. In step S15, the spring constant k ′ is obtained by creating the above equations (6), (7), and (8) from the output values of the four deformation amount detectors 12 and solving the simultaneous equations. In step S16, the spring constant k used in the loaded mass calculation unit 13 is updated to the spring constant k ′ obtained in step S15. Thus, even if the spring constant k of the elastic body 11 is changed value by aging, it updates its value, it is possible to accurately determine the load mass m _c cab 10. In payload calculation unit 13. Further, in the above method, even if the loading mass m _{c in the} cab 10 and the mass M _{f of the} cab 10 are unknown, it is possible to know each value.

In the first embodiment of the present invention, the car 6 is accelerated at different accelerations α ₁ , α ₂ , and α _3. However, the acceleration at the time of acceleration of the car 6 and the acceleration at the time of deceleration may be used. Moreover, you may use the acceleration of the jerk period in which the acceleration of the car 6 is changing. Thus, the spring constant k can be updated during normal service of the elevator apparatus.

Further, a special motion mode for updating the spring constant k of the elastic body 11 may be provided, and the vehicle may travel in a traveling pattern that accelerates with a plurality of accelerations in a single travel. Further, the acceleration is not limited to three, and measurement is performed with a plurality of accelerations of three or more, and the spring constant k of the elastic body 11, the load mass m _{c in} the cab 10, and the mass M _{f of the} cab 10 are further determined. It can be determined accurately.

Embodiment 2
In the elevator apparatus according to the first embodiment of the present invention, the car 6 is caused to travel at _three different accelerations α ₁ , α ₂ , and α ₃ , the spring constant k ′ of the unknown elastic body 11, and the load mass in the cab 10. Although _mc 'and the mass _Mf ' of the cab 10 are obtained, in the elevator apparatus according to the second embodiment, the cab 6 is obtained by obtaining the mass _{Mf of the} cab 10 in advance by another means. Two values of the spring constant k ′ of the unknown elastic body 11 and the load mass m _c ′ in the cab 10 are obtained by traveling at two different accelerations α ₁ and α ₂ .

In the elevator apparatus according to the second embodiment, when the mass of the cab 10 is the unknown M _f ′ and the spring constant of the elastic body 11 is the unknown k ′, the load mass in the cab 10 is m when the elevator apparatus is installed. The respective output x _s1 and x _s2 of the deformation amount detection unit 12 are acquired in two known loading states with different _c1 and m _c2 . The relationship between the values at this time is as follows.

From these two equations, the mass M _f ′ of the cab 10 can be obtained in advance. If the mass of the cab 10 is determined in advance as described above, the spring constant k of the elastic body 11 can be updated by causing the car 6 to travel at two different accelerations α ₁ and α ₂ . Since only two accelerations are required, the time required for updating the spring constant k of the elastic body 11 can be shortened. Further, the spring constant k of the elastic body 11 can be updated in one run using the accelerations during acceleration and deceleration during normal running of the elevator apparatus.

It should be noted that the mass M _f ′ of the cab 10 is the value obtained when the cab 10 is traveled at a known acceleration α ₁ if there is only one type of load mass m _{c1 in} the cab 10 when the elevator apparatus is installed. The output x _acc1 of the deformation amount detection unit 12 is acquired, and the following equation is obtained.

Furthermore, since the relational expression when the loaded mass in the cab 10 is not accelerated at m _c1 is the expression (9), the cab 10 is solved by solving the expressions (9) and (11) as simultaneous equations. The mass M _f ′ can be obtained.

  Moreover, you may obtain | require each value by calculating | requiring all the relational expressions of Formula (9) (10) (11), and calculating | requiring the average value of the calculated | required multiple sets of solutions. At this time, errors due to sensor noise or the like can be eliminated.

Embodiment 3
In the elevator apparatus according to Embodiment 3 of the present invention, the secular change of the spring constant of the elastic body 11 is detected from the output of the deformation detection unit 12 when the car 6 is stationary and accelerated.

  First, from the expression (1), the following expression is obtained from the output x of the deformation amount detection unit 12 when the car 6 is stationary.

Further, when the output of the deformation amount detection unit 12 when the car 6 is driven at the acceleration α is x _acc , the following expression is obtained.

  In the elevator apparatus according to Embodiment 3, equations (12) and (13) are stored in advance with the spring constant of the elastic body 11 as k.

  Next, it is assumed that the spring constant k of the elastic body 11 changes to k ′ due to aging, and the relationship between k and k ′ is expressed by the following equation.

When the spring constant of the elastic body 11 includes a secular change, the load mass in the car room 10 is _mc , and the output of the deformation amount detection unit 12 in a state where the car 6 is stationary is x _{s Assuming} that m _cs is a result of _obtaining the load mass in the cab 10 using the equation (12) without considering the secular change, the result is as follows.

The actual load mass m _c in the cab 10 is expressed as follows by using the spring constant k ′ of the elastic body 11 including the secular change.

Similarly, when the output of the deformation amount detection unit 12 is x _a when the car 6 is driven at the acceleration α, the inside of the car room 10 is calculated using the equation (12) without considering the secular change. Assuming that m _ca is the result of _{obtaining the} loading mass, the following is obtained.

More similar, the actual loading capacity of the car chamber 10 m _c, by using the spring constant k of the elastic body 11 including the aging 'is shown as follows.

From equations (16) and (18), x _a is expressed as x _s as follows.

  Substituting equation (19) into equation (17) yields:

  From Expression (20) and Expression (15), γ is expressed as follows.

Since the value of γ can be obtained as described above, the spring constant k ′ of the elastic body 11 including secular change is obtained using this value. Finally, by obtaining the spring constant k 'of the elastic member 11 which includes aging, the actual loading capacity of the car chamber 10 can also be determined m _c.

  In the elevator apparatus according to Embodiment 3 of the present invention, the spring constant of the elastic body 11 can be obtained even when the actual load mass in the cab 10 is unknown, and the load mass detector 8 is calibrated. Can do. The loading mass detector 8 can be calibrated during normal operation of the elevator apparatus, but a special operation mode may be provided.

Embodiment 4
In the elevator apparatus according to Embodiment 4 of the present invention, in the spring constant calculation unit 14, the amount of change in the output of the deformation amount detection unit 12 during traveling of the elevator and the change in the torque command value to the hoisting machine 4 in the control panel 5. The spring constant of the elastic body 11 is obtained by comparing the amount.

  FIG. 7 is a diagram for explaining the operation of the elevator apparatus according to the fourth embodiment of the present invention, in which the rising speed of the car 6 is in the lower stage, the torque command value to the hoisting machine 4 in the control panel 5 is The output of the deformation amount detection unit 12 is shown in the upper part.

First, the elevator car 6 at t ₁ from time t ₀ to obtain the variation amount [Delta] x ₁ of the output of the deformation amount detector 12 and the fluctuation amount .DELTA..tau ₁ torque command value when changing from the stationary state to the accelerating state. Δτ ₁ is an acceleration torque required when the car 6 is accelerated, and is a value determined by the moment of inertia around the motor shaft. That is, Δτ ₁ varies depending on the car loading mass. For this reason, it is possible to convert the loading mass of the car 6 from Δτ ₁ . The relationship between Δτ ₁ and the loading mass of the car 6 may be obtained in advance, or the test weight may be loaded with the test weight loaded at the time of installation, and the value of Δτ ₁ at that time may be stored. . For example, the relationship between Δτ ₁ and the loaded mass may be obtained by obtaining Δτ ₁ when the car 6 is driven in two ways and linearly interpolating between the two points.

Next, the loading capacity of the car 6 is calculated from the fluctuation amount Δx ₁ of the output of the deformation amount detection unit 12, and the spring constant is corrected so as to coincide with the loading capacity of the car 6 converted from Δτ ₁ described above. . Conversion from Δx ₁ to the loaded mass of the car 6 can be obtained from the relational expression of FIG. 3 or FIG. 4 described in the first embodiment.

In addition, instead of using the fluctuation amount Δτ ₁ of the torque command value during acceleration from time t ₀ to t ₁ and the fluctuation amount Δx ₁ of the output of the deformation amount detector 12, torque during deceleration from time t ₄ to t ₅ The fluctuation amount Δτ ₂ of the command value and the fluctuation amount Δx ₂ of the output of the deformation amount detection unit 12 may be used.

  In the elevator apparatus according to Embodiment 4 of the present invention, the spring constant of the elastic body 11 can be corrected even when the actual load mass in the cab 10 is unknown. The loading mass detector 8 can be calibrated during normal operation of the elevator apparatus, but a special operation mode may be provided.

  In the elevator apparatus according to the fourth embodiment of the present invention, the torque command value to the hoisting machine 4 in the control panel 5 is used, but a torque value converted from the motor current of the hoisting machine 4 may be used. Then, a value obtained by actually measuring the torque of the hoisting machine 4 may be used.

Embodiment 5
In the elevator apparatus according to the fifth embodiment of the present invention, in the elevator apparatus described in the fourth embodiment, the elevator apparatus is caused to travel with two different loading masses in the cab 10 and the amount of deformation during the elevator traveling is increased. The amount of change in the output of the detection unit 12 is compared with the amount of change in the torque command value to the hoisting machine 4 in the control panel 5 to obtain the spring constant of the elastic body 11.

  FIG. 8 is a flowchart for explaining the operation of the elevator apparatus according to the fifth embodiment of the present invention. Hereinafter, the operation will be described with reference to FIGS.

In the elevator apparatus, when the car 6 moves up or down due to call registration in the landing or car, in step S81, the output x _a1 of the deformation amount detection unit 12 while the car 6 is traveling, and the control panel The torque command value τ _a1 to the hoisting machine 4 at 5 is acquired. This corresponds to x _a and τ _a from time t ₃ to t _{4 when the} car 6 is traveling at a constant speed in FIG.

In step S82, the car 6 is stopped on the destination floor or the like. Next, when the car 6 goes up or down due to call registration in the landing or car, in step S83, the output x _a2 of the deformation amount detection unit 12 while the car 6 is running, and the control panel 5 The torque command value τ _a2 to the hoisting machine 4 is acquired. This corresponds to x _a and τ _a from time t ₃ to t _{4 when the} car 6 is traveling at a constant speed in FIG.

In step S84, it is determined whether or not the loaded mass in the cab 10 is different during the two runs of step S81 and step S83. Specifically, for example, the determination is made based on whether or not the absolute value of the difference between x _a1 and x _a2 is larger than a predetermined value. If it is determined that the loaded mass is different between the two runs, the process proceeds to step S85. If it is determined that the loaded mass is not sufficiently different, step S83 is executed again. Note that whether or not the loaded mass is different may be determined based on whether or not the absolute value of the difference between τ _a1 and τ _a2 is greater than a predetermined value.

In step S85, the change amount mcτ of the loaded mass in the cab 10 is calculated from the difference between τ _a1 and τ _a2 . Here, the relationship between the change amount of the loaded mass and the change amount of the torque command value is linear. Therefore, for example, when the elevator car is installed, the car 6 is caused to travel in two known loading states using a test weight, and the difference between the torque command values at that time is obtained, whereby τ _a1 and τ _a2 From the difference, an equation for calculating the change amount mcτ of the loaded mass in the cab 10 can be obtained. Moreover, it can also obtain | require from the design value of the hoisting machine 4, and the mechanical constant of an elevator apparatus.

In step S86, it calculates a payload of variation mcx cab 10 from the difference between the x _a1 and x _a2. This can be calculated by substituting the respective values of x _a1 and x _a2 into equation (2) and determining the difference between the results.

  In step 87, the spring constant k of the elastic body 11 is obtained so that mcτ stopped in step S85 and mcx obtained in step S86 coincide. For example, the following relationship is obtained from Equation (2).

  In order for mcx to coincide with mcτ, the spring constant k of the elastic body 11 is obtained as follows.

  In step S88, the loaded mass detector 8 is calibrated based on the value obtained by the equation (23).

In step S81 and step S83, the value is acquired while the car 6 is traveling at a constant speed. However, the value is set in a state where the car 6 is stationary and a torque command value is output. You may get it. Specifically, this is the state immediately before the car 6 starts traveling or immediately after the car 6 stops on the destination floor, and corresponds to the state immediately before time t ₀ and immediately after t _{7 in} FIG.

  As described above, in the elevator apparatus according to Embodiment 5 of the present invention, even if the loading mass of the car 6 is unknown, the spring constant k of the elastic body 11 can be corrected to calibrate the loading mass detector 8. it can. Therefore, even when the elevator apparatus performs a normal service, the loaded mass detection unit 8 can be calibrated. In addition, since the value acquired while the car 6 is traveling at a constant speed is used, the car 6 is not affected by the deformation of the elastic body 11 or the torque command due to inertia. The spring constant can be obtained with higher accuracy than using the value.

  In step S81 and step S83, a condition that the traveling direction of the car 6 is the same may be added. By adding such conditions, even when the loss of friction or the like varies depending on the traveling direction, the influence can be eliminated, and the spring constant can be obtained with high accuracy.

  Further, in step S81 and step S83, a condition may be added that both travelings are power running operation or regenerative operation. By adding such conditions, it is possible to eliminate the influence of the difference in torque command value caused by the power running operation or the regenerative operation of the hoisting machine 4, and the spring constant can be obtained with high accuracy.

  Or you may make it acquire the value when the position of the car 6 is equal in step S81 and step S83. By adding such conditions, even when the travel loss differs depending on the position of the car 6, the influence can be eliminated, and the spring constant can be obtained with high accuracy.

Furthermore, the value acquired in each step may be an average value of values acquired a plurality of times in a predetermined period. Furthermore, the predetermined period during which the value is acquired a plurality of times may be a time between times t ₃ and t ₄ shown in FIG. Thereby, the influence of noise can be removed from the values acquired in each step.

  In the fifth embodiment, the torque command value for the hoisting machine 4 in the control panel 5 is acquired. However, a torque value converted from the current value input to the hoisting machine 4 may be used. Furthermore, the actual torque value of the motor of the hoisting machine 4 may be measured and used.

Embodiment 6
FIG. 9 shows an example of an elevator apparatus according to Embodiment 6 of the present invention. Compared with FIG. 1 showing the elevator apparatus according to Embodiment 1, the car frame 9 is suspended via an elastic body 15. It is connected to the suspended body 7, the deformation amount detection unit 17 detects the deformation amount of the elastic body 15, and the car 16 is moved from the car frame 9, the car room 10, the elastic body 15, and the deformation amount detection unit 17. It is the same except that it is configured.

  The operation is the same as that of the elevator apparatus according to the first embodiment. In the elevator apparatus according to the sixth embodiment, even when it is difficult to install an elastic body between the car room 10 and the car frame 9, the elastic body is arranged on the upper portion of the car frame 9, so that the first embodiment The same effect can be obtained.

Embodiment 7
FIG. 10 shows an example of an elevator apparatus according to the seventh embodiment of the present invention. Compared with FIG. 1 showing the elevator apparatus according to the first embodiment, the car frame 9 is provided with a suspension car 18. The suspension body 7 is hung on the suspension wheel 18. One end of the suspension body 7 is connected to the elastic body 19, and the other end of the elastic body 19 is fixed to the hoistway 1. Further, the deformation amount detection unit 21 detects the amount of change of the elastic body 19 and is the same except that the car 20 includes the car frame 9, the car room 10, and the suspension wheel 18.

The operation is the same as that of the elevator apparatus according to the first embodiment. However, M _f is not the mass of the car room 10 but a value obtained by adding the mass of the car frame 9, the mass of the car room 10, and the mass of the suspension wheel 18. Furthermore, in the elevator apparatus of the seventh embodiment, the elevator roping is 2: 1 roping. In 2: 1 roping, the torque command value is ½ times the car load. Therefore, when obtaining the relationship between the change amount of the load mass with respect to the change amount of the torque command value, the above is taken into consideration when obtaining from the design value of the motor and the machine constant of the elevator.

  In the elevator apparatus according to the seventh embodiment, even when it is difficult to install an elastic body on the car 20, the same effect as that of the first embodiment can be obtained by installing the elastic body at one end of the suspension body 7. Can do.

Embodiment 8
FIG. 11 shows an example of an elevator apparatus according to the eighth embodiment of the present invention. Compared with FIG. 1 showing the elevator apparatus according to the first embodiment, the elevator frame 23 is returned to the car frame 9 via the elastic body 23. The vehicle 22 is installed, the suspension wheel 7 is suspended on the return wheel 22, and the deformation amount detection unit 25 detects the amount of change of the elastic body 23, so that the car 24 is connected to the car frame. 9, except that the car room 10, the elastic body 23, and the return wheel 22 are configured. In addition, FIG. 11 has shown the case where two sets of the elastic body 23 and the return wheel 22 exist.

The operation is the same as that of the elevator apparatus according to the first embodiment. However, M _f is not the mass of the car room 10 but a total value of the mass of the car frame 9, the mass of the car room 10, and the mass of the deformation amount detection unit 25. Further, in the elevator apparatus of the eighth embodiment, the elevator roping is 2: 1 roping. In 2: 1 roping, the torque command value is ½ times the car load. Therefore, when obtaining the relationship between the change amount of the load mass with respect to the change amount of the torque command value, the above is taken into consideration when obtaining from the design value of the motor and the machine constant of the elevator.

  Also in the elevator apparatus according to the eighth embodiment, the same effect as in the first embodiment can be obtained.

8 Load mass detection unit 11 Elastic body 12 Deformation amount detection unit

Claims (9)

An elastic body that deforms according to the loading mass in the car room;
A deformation amount detector for measuring the deformation amount of the elastic body;
A loading mass detection unit for detecting a loading mass in the cage from the output of the deformation amount detection unit,
The loaded mass detector has a spring constant calculator.
The spring constant calculator is
The difference between the output of each deformation amount detection unit at the time of acceleration in which the car room is accelerated at three different types of acceleration and the output of the deformation amount detection unit at the time of stationary when the car room is stationary is used. Update the spring constant of the elastic body,
The loading mass detection unit, the elevator device and an output of the previous SL deformation amount detecting unit and the spring constant and detecting the payload of the cab. An elastic body that deforms according to the loading mass in the car room;
A deformation amount detector for measuring the deformation amount of the elastic body;
The output of each deformation amount detection unit and the state in which the load mass is loaded in the cab when the cab is accelerated at two different accelerations while the load is loaded in the cab in have rows update the spring constant of the difference and the cab mass of the elastic body using an output of the deformation amount detection unit at rest that is still the cab, the deformation amount detecting unit of the output And a loading mass detector that detects the loading mass in the cage from the spring constant . An elastic body that deforms according to the loading mass in the car room;
A deformation amount detector for measuring the deformation amount of the elastic body;
A loading mass detection unit for detecting a loading mass in the cage from the output of the deformation amount detection unit,
The load mass detector
Detecting the load mass in the cage from the output of the deformation detector when the cage is stationary and the output of the deformation detector when accelerating the cage;
The load mass detector includes a spring constant calculator.
The spring constant calculator is
The previously stores respective output of the deformation amount detection unit when the spring constant of the elastic body are accelerated by and specific acceleration when the cab is stationary at the time of a particular value,
The spring constant of the elastic body is updated using the output of the deformation amount detection unit when the car room is accelerated and the output of the deformation amount detection unit when the car room is stationary. and to Rue elevators apparatus. The elevator apparatus according to any one of claims 1 to 3 , wherein the stationary state and the accelerated state are in one run of the elevator. An elastic body that deforms according to the loading mass in the car room;
A deformation amount detector for measuring the deformation amount of the elastic body;
A motor control device for driving the elevator;
The output of the deformation amount detection unit is corrected from the output of the deformation amount detection unit and the torque command calculated by the motor control device, and the loaded mass in the car room is detected based on the corrected output of the deformation amount detection unit. A loading mass detector,
The load mass detection unit is configured so that the output change amount of the deformation amount detection unit and the change amount of the torque command acquired during traveling at a constant speed in the same traveling direction in two loading states with different loading masses are matched. the, elevator apparatus characterized by Rukoto to correct complement the output of the deformation amount detection unit. The car room is installed inside the car frame via the elastic body,
The elevator apparatus according to any one of claims 1 to 5 , wherein the car frame is suspended by a suspension body. The car room is installed inside the car frame,
The elevator apparatus according to any one of claims 1 to 5 , wherein the car frame is suspended by a suspension body via the elastic body. The car room is installed inside the car frame,
A suspension vehicle with a suspended body is installed in the car frame,
The elevator apparatus according to any one of claims 1 to 5 , wherein one end of the suspension body is installed in a hoistway through the elastic body. The car room is installed inside the car frame,
The car frame has a return wheel installed through the elastic body,
The elevator apparatus according to any one of claims 1 to 5 , wherein a suspension body is hung on the return wheel.

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