KR100303013B1 - Guide rail grinding device and its profile measuring mathod for elevator - Google Patents

Abstract

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a grinding device for a guide rail for an elevator and a method for measuring the bending thereof. In the related art, even a step between the guide rails can only be partially removed so that the ride comfort of the elevator may be worse in some cases. The present invention has a problem, the present invention is provided with a support member which is installed on the upper part of the base fixed to the top of the car, and the probe is installed at equal intervals on the upper part of the support member to contact the guide rail when the car is running. A plurality of displacement detection sensors for detecting the amount of bending of the actuator, an actuator installed in the center of the support member, and installed at the end of the operating shaft of the actuator to operate when grinding the curved portion of the guide rail and the abrasive blade is provided Rotation is provided at the upper end of the polishing motor and the link rotatably installed on one upper side of the base. It consists of a roller connected to the guide rail and contacting the guide rail to measure the driving distance of the car, so that the installation work can be saved since there is no need for adjustment work to improve the straightness after the guide rail is installed. In addition, it is possible to automatically perform correction work by machining while measuring the amount of bending of the installed guide rail, so that it is possible to install more precisely than the conventional manual work, and it is possible to increase riding comfort. It can be easily and quickly modified without interrupting operation.

Description

GUIDE RAIL GRINDING DEVICE AND ITS PROFILE MEASURING MATHOD FOR ELEVATOR}

The present invention relates to a grinding device for a guide rail for an elevator and a method of measuring the bending thereof, and more particularly, to measure a straightness of a guide rail fixed to an inner wall of a building to guide a car movement of an elevator. It is designed to be effective while grinding.

In general, elevators are mainly installed in apartments, buildings, etc., and are devices for conveniently moving passengers from one point to another while moving up or down in a vertical direction, and the lateral vibration during operation of the elevator guides the driving of the car. It is most sensitive to the straightness of the rail, and the badness of the straightness of guide rails is caused by defects in processing of the guide rails themselves, steps when connecting between guide rails, and deformation of guide rails due to secular variation. Accordingly, as the demand for high-speed elevators begins to increase, interest in elevator guide devices is increasing.

The current technological direction is evolving from the guide device to the concept of semi-active, active, etc., but fundamentally, the straightness problem of the guide rail is the most important requirement for the comfort of the elevator, especially the high speed In this case, since the lifting stroke is over 200m, the installation work of the guide rail takes up a large part of the elevator installation work.In the case where the position of the guide rail is deformed due to secular variation, the modification work is difficult and takes a long time. Due to the occurrence of elevators that have been installed for a long time, the ride quality is getting worse, which may be a cause of claims from customers.

In the conventional apparatus for grinding the bending of the guide rail, as shown in FIGS. 1 and 2, the guide rail 22 is fixedly installed on the building side wall 21, and is restrained by the guide rail 22 to raise and lower. The support member 25 of the grinding device 24 for grinding the bending part of the guide rail 22 is installed in the upper end of the car 23, and the connecting member 26 is provided on the upper and lower ends of the support member 25, respectively. (27) is installed, and both ends of the first roller (28) and the guide rail (22) which move in contact with the front surface of the guide rail (22) at the ends of each connecting member (26) (27) and the nut ( As the 29, the second roller 30 for guiding the movement while preloading the guide rail 22 is provided, respectively.

In addition, an attachment plate 31 is fixed to the support member 25, and an attachment plate 31 is fixed to the attachment plate 31 by a fixing member 32, and a blade 33 for grinding a curved portion of the guide rail 22 is provided. The grinder 34 which has is provided.

However, such a conventional apparatus is primarily intended to eliminate the step difference in the connection of the guide rail 22, as shown in FIG. 3, if the trajectory of the guide rail 22 is the first trajectory, the edge portion is polished. , The step 4 is not polished in the case of trajectory 4, and the straightness is improved because the curvature of the guide rail 22 is polished in the trajectory 3 of the trajectory 3, but in the case of the trajectory 2, the step is not polished. As a result, the conventional apparatus has a number of problems such that the step between the guide rails 22 can only be partially removed so that the ride comfort of the elevator may be worse in some cases.

Accordingly, the present invention is to solve the above-mentioned problems, by measuring the straightness of the guide rail fixed to the inner wall of the building to guide the car movement of the elevator so that it can be efficiently corrected while grinding the defects An object of the present invention is to provide a grinding device for a guide rail for an elevator that can maintain a straightness of a guide rail at a constant state at all times, and a method of measuring the bending thereof.

1 is a longitudinal sectional view showing a state where a guide rail grinding device of a conventional elevator is installed;

2 is a plan view of main parts of FIG.

Figure 3 is a schematic diagram for explaining the state when grinding the bending of the conventional guide rail

Figure 4 is a front view showing a guide rail grinding device according to the present invention

5 is an explanatory diagram at the time of measuring the bending of the guide rail when the car of the elevator according to the present invention rises;

Figure 6 is an explanatory diagram at the time of measuring the bending of the guide rail when the car descends of the elevator according to the present invention;

7 is a flowchart at the time of displacement measurement according to the present invention.

8 is a flowchart of a transfer function calculation according to the present invention.

9 is a flow chart during bending of the guide rail according to the present invention.

* Explanation of symbols for the main parts of the drawings

One; Car 2; Base

3; Support member 4; Guide rail

5; Probe 6; 1st displacement detection sensor

7; A second displacement detection sensor 8; 3rd displacement sensor

9; Actuator 10; Working shaft

11; Polishing motor 12; Abrasive blade

13; Link 14; Encoder

15; Roller 16; Spring 18; Controller

According to the aspect of the present invention for achieving the above object, the support member is installed on the upper portion of the base fixed to the upper end of the car, and is installed at equal intervals on the upper portion of the support member and in contact with the guide rail during operation of the car Probe is provided with a plurality of displacement detection sensors for detecting the amount of bending of the guide rail, the actuator installed in the center of the support member, and is installed at the end of the operating shaft of the actuator to operate the curved portion of the guide rail And a polishing motor having a polishing blade and rotatably installed at an upper end of a link rotatably installed at an upper side of the base, and connected to an encoder for measuring a traveling distance of the car and in contact with a guide rail. It is achieved by providing a grinding device for a guide rail for an elevator, characterized in that.

Between the base and the link is characterized in that the spring is provided for providing an elastic force to preload the guide rail to the guide rail.

On the other hand, according to another aspect of the present invention for achieving the above object, the step of detecting and measuring the amount of bending of the guide rail, and after the measurement is completed, the controller over the lifting stroke section by the measured value and the formula of the guide rail Calculating a bending amount, and calculating, by the controller, an abnormal rail bending value of the guide rail from the condition that the machining of the guide rail is minimized and the riding comfort is maximized by the calculated bending amount. And measuring, by the controller, the step of obtaining the transfer function of the actuator by the grinding amount, and the step of grinding the guide rail by the calculated actuator transfer function. This is accomplished by providing a method.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention for achieving the above object will be described in detail.

Figure 4 is a front view showing a guide rail grinding device according to the present invention, Figure 5 is an explanatory view when measuring the bending of the guide rail when the car of the elevator according to the present invention, Figure 6 is a car of the elevator according to the present invention Fig. 7 is an explanatory diagram when measuring the bending of the guide rail when descending, Fig. 7 is a flowchart during displacement measurement according to the present invention, Fig. 8 is a flowchart during calculation of a transfer function according to the present invention, and Fig. 9 is according to the present invention. As a flowchart at the time of bending of a guide rail, the same code | symbol is attached | subjected about the same part as a prior art, and this invention is demonstrated.

In the present invention, the base 2 is fixed to the upper end of the car 1 of the elevator, the support member 3 is fixed to the upper part of the base 2 with a bolt or the like, and the car 1 to the upper part of the support member 3. Probe (5) is provided in contact with the guide rail (4) during operation of the first, second, third displacement detection sensors (6) (7) (8) for detecting the amount of bending of the guide rail (4) ) Is installed at equal intervals, the actuator (9) is installed in the center of the support member (3), at the end of the operating shaft (10) of the actuator (9) when operating the curved portion of the guide rail (4) The polishing motor 11 is provided, and the polishing motor 11 is provided with a polishing blade 12 for grinding the curved portion of the guide rail 4.

In addition, a link 13 is rotatably installed at an upper side of the base 2, and an upper end of the link 13 is connected to an encoder 14 for measuring a travel distance of the car 1. A roller 15 in contact with 4 is rotatably installed, and a spring for providing an elastic force for preloading the guide rail 4 between the base 2 and the link 13. 16) is installed and configured.

4 to 9, the present invention configured as described above is installed at equal intervals on the upper portion of the support member 3 coupled to the upper portion of the base 2 fixed to the upper end of the car 1 of the elevator. The probes 5 provided in the first, second, and third displacement detection sensors 6, 7, and 8 respectively contact the guide rails 4 when the car 1 runs, and the equal interval L A method of measuring the bending of the guide rail 4 using three signals by the first, second, and third displacement detection sensors 6, 7, and 8 arranged in the above will be described with reference to FIGS. 4 and 5. .

L in FIG. 4 is the interval between the first, second and third displacement detection sensors 6, 7 and 8, the car 1 in FIG. 5 is driven upward, and W0, W1 and W2 are virtual reference lines. V0, V1, and V2 are the deflections of the guide rails 4, and V0, V1, and V2 are the outputs of the first, second, and third displacement detection sensors 6, 7, and 8, and when the geometry of FIG. (ｘ) can be expressed by the following equation.

W2 (ｘ) = 2L [{W1 (ｘ) + V1 (ｘ)}-{W0 (ｘ) + V0 (ｘ)} / L]-V2 (ｘ) + {W0 (ｘ) + V0 (ｘ)} - - - (One)

If the elevator is stopped, that is, the initial state (ｘ = 0), W0 (0) and W1 (0) are initialized to 0 for convenience of calculation, then W2 (0) can be obtained. If the output of the first, second and third displacement detection sensors 6, 7 and 8 is obtained at the position (that is, the elevator has moved by L), W2 (L) can be converted using the above equation. This is because W1 (0) and W2 (0) are the same as W0 (L) and W1 (L).

By repeating the above method, it is possible to measure the curvature of the guide rail 4 in the period of L during the operation of the elevator, the value of W2 (0) is 0 initially the curvature of the virtual reference line and the guide rail 4 is 0 The assumption is that the points L and L are the same angle, which implies a different assumption from the actual state.However, if the W2 value at the last measurement point is changed back to 0, the bending amount W (W) of the guide rail 4 can be corrected. Will be.

In addition, the roller 15 is always rotated in contact with the guide rail 4 by the spring 16, the encoder 14 connected to the roller 15 is to measure the travel distance of the car (1) During the bending measurement and the position measurement, the polishing blade 12 is not operated.

When the measurement is completed, the controller 18 (FIG. 7) calculates the amount of bending of the guide rail 4 using the measured value and the above equation over the lifting stroke section, and the guide rail can optimize the riding comfort by using the same. The abnormal curvature (P * ｘ of FIG. 6) of (4) is calculated | required on the conditions which minimize the process of the guide rail 4, and the difference between this and actual curvature amount becomes a grinding | polishing amount, and the car 1 as shown in FIG. As the grinding blade 12 rotates by the driving of the polishing motor 11 installed at the end of the operating shaft 10 according to the operation of the actuator 9 by the amount of grinding calculated while driving, the guide rail 4 is processed. do.

Conversion of the transfer amount of the actuator 9 will be described with reference to FIG. 6.

If the car 1 has an abnormal rail curvature P * (Z) at the time of lowering, the processing amount is W0 (X-L) -P0 (X-L).

Additional feed amount = [P0 (ｘ)-P0 (X-L) + 1/2 {(W0 (ｘ) + V0 (ｘ)}-(W2 (ｘ) + V2 (ｘ))}]---(2)

After calculating the feed amount for each travel distance and making a continuous function to move while moving in the downward direction, the block diagram and flow chart of the displacement measurement is the same as in Fig. 7, the guide rail (4) using the calculation formula in the method of Fig. Calculate the amount of bending, and use the calculated amount of bending to obtain the abnormal rail bending from the condition that the machining of the guide rail (4) can be minimized and the riding comfort can be maximized, and then the controller (18) calculates the amount of grinding. By using the grinding amount, the transfer function of the actuator is obtained as shown in FIG. 8, and the grinding process of the guide rail is performed in the same manner as shown in FIG. 9 using the calculated actuator transfer function.

As described above, in the present invention, after the installation of the guide rail, it is not necessary to finally perform the adjustment work for improving the straightness, thereby reducing the number of installations and modifying the process while measuring the bending amount of the previously installed guide rail. Since the work can be done automatically, it is possible to install more precisely than the conventional manual work, which can increase the ride comfort, and can easily and quickly modify the guide rail deformation caused by the secular change of the building without stopping the operation. It is a very useful invention with many advantages.

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the above-described embodiments, and is generally defined in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the following claims. Anyone with knowledge of the world will be able to make various changes.

Claims (3)

The support member is installed on the upper portion of the base fixed to the upper end of the car, and is installed at equal intervals on the upper portion of the support member and a plurality of probes for contacting the guide rail when the car is provided to detect the amount of bending of the guide rail Displacement detection sensors, an actuator installed at the center of the support member, a polishing motor installed at the end of the operating shaft of the actuator and operating when grinding a curved portion of the guide rail and provided with a polishing blade, An apparatus for grinding an elevator guide rail, comprising: a roller rotatably installed at an upper end of a link rotatably installed at an upper side thereof, the roller being in contact with an guide rail connected to an encoder for measuring a travel distance of the car. The grinding device for an elevator guide rail according to claim 1, wherein a spring is provided between the base and the link to provide an elastic force for preloading the guide rail with the roller. Detecting and measuring the bending amount of the guide rail, and after the measurement is completed, the controller calculates the bending amount of the guide rail by the measured value and the calculation formula over the lifting stroke section, and the controller is connected to the calculated bending amount. Calculating the grinding amount after obtaining the abnormal rail curvature of the guide rail from the condition that the processing of the guide rail is minimized and the riding comfort is maximum, and the controller obtaining the transfer function of the actuator by the grinding amount. And the step of grinding the guide rail by the calculated actuator transfer function.