Calibration device for elevator guide rail coplanarity measuring instrument

Abstract

The utility model relates to the technical field of large-length metering instrument calibration devices, and particularly discloses an elevator guide rail coplanarity measuring instrument calibration device which comprises a marble flat plate, a groove is formed in the top face of the marble flat plate, and two precise sliding rails and a grating ruler are arranged in the groove. A first T-shaped guide rail is arranged on the two precise slide rails; a second T-shaped guide rail is fixedly arranged at the tail end of the groove; the marble slab is also provided with an elevator guide rail coplanarity laser detector mounting base, a first pentagonal prism, a second pentagonal prism and a digital receiving target; and the digital receiving target is connected with an image processor. The calibration device provided by the utility model can be simultaneously suitable for calibrating the parallelism of the measuring lines and the main reference surface of an elevator guide rail coplanarity laser detector, a split elevator calibration ruler and an integrated elevator calibration ruler, and has the advantages of high accuracy, good stability, good reproducibility, high automation degree, large coverage area and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of large-length measuring instrument calibration devices, in particular to an elevator guide rail coplanarity measuring instrument calibration device. Background Art

[0002] With the development of society, high-rise buildings have sprung up, and elevators have become an indispensable existence. The safety performance, maintenance inspection and protection measures of elevators have become the focus of people's attention. In the first installation of the elevator and the subsequent maintenance inspection, the coplanarity technical indicators of a pair of T-shaped elevator guide rails are particularly important. If the coplanarity technical indicators of the guide rails do not meet the requirements, it may cause problems such as shaking and noise during the operation of the elevator, and even cause more serious safety accidents. Therefore, the qualification of this technical indicator will directly affect the stability and safety of the elevator operation.

[0003] The elevator guide rail coplanarity technical indicators are measured by the elevator guide rail coplanarity measuring instrument, which can measure and adjust the guide rails during elevator installation so that the coplanarity of a pair of T-shaped guide rails meets the installation requirements. The elevator guide rail coplanarity measuring instrument mainly includes the elevator guide rail coplanarity laser detector, the split elevator guide ruler and the integrated elevator guide ruler. Its working principle is: fix the main reference plane of the instrument on a guide rail working surface, and provide a measuring line parallel to the main reference plane (the measuring line of the elevator guide rail coplanarity laser detector is provided by a laser beam, and the measuring line of the elevator guide ruler is provided by a nylon line), read the offset of the measuring line through the reading scale fixed on the other guide rail working surface, and adjust the guide rail so that the coplanarity of the guide rail meets the installation requirements.

[0004] In order to ensure the accuracy of the elevator guide rail coplanarity measuring instrument in detecting the guide rail coplanarity technical indicators and avoid the wrong judgment of the elevator guide rail coplanarity due to measurement errors, it is necessary to calibrate the elevator guide rail coplanarity measuring instrument regularly, specifically, to calibrate the parallelism between the measuring line of the elevator guide rail coplanarity measuring instrument and the main reference plane.

[0005] In the prior art, the calibration of the parallelism between the measuring line and the main reference plane of the elevator guide rail coplanarity laser detector is carried out with a 2m flat ruler and a glass ruler as the main standard. The data of the center of the laser point at the near and far points of the elevator guide rail coplanarity detector on the glass ruler is read by human eyes and the calibration work is completed by calculation. Since the laser point will produce a spot divergence phenomenon at the far point, the error of the human eye reading is increased, and the consistency error of the near and far points of the glass ruler is large, resulting in inaccurate measurement results. In addition, the elevator guide rail coplanarity laser detector is mostly used for the detection of super-large freight elevators (the longest detection range is one meter). For freight elevators with a T-rail spacing of 5m, a 2m long ruler cannot completely cover the effective measurement range of the elevator rail coplanarity laser detector; for split-type elevator calibration rulers and integrated elevator calibration rulers, there is currently no dedicated calibration device to calibrate the parallelism of their measuring lines with the main reference surface. Most of them use a pair of T-rails relying on a 2m ruler to build a gauge. This method has poor stability, inaccurate measurement results, lack of reproducibility, and cumbersome operating procedures. In addition, the 2m construction distance cannot cover all models of integrated elevator calibration rulers.

[0006] Therefore, designing a calibration device for an elevator guide rail coplanarity measuring instrument that can accurately detect the parallelism between the measuring line of the elevator guide rail coplanarity measuring instrument and the main reference surface has become a technical problem that needs to be solved urgently. Utility Model Content

[0007] In order to solve the technical problem that the calibration device in the prior art cannot accurately detect the parallelism between the measuring line of the elevator guide rail coplanarity measuring instrument and the main reference surface when calibrating the elevator guide rail coplanarity measuring instrument, the utility model provides an intelligent, automated, high-accuracy, large-measuring-range and adjustable-range elevator guide rail coplanarity measuring instrument calibration device. The technical solution adopted by the utility model is as follows:

[0008] A calibration device for an elevator guide rail coplanarity measuring instrument, characterized in that it comprises a marble flat plate, a groove is provided on the top surface of the marble flat plate, two precision slide rails and a grating ruler are arranged in the groove; a first T-shaped guide rail is arranged above the two precision slide rails; a second T-shaped guide rail is fixedly arranged at the end of the groove; an elevator guide rail coplanarity laser detector mounting base, a first pentagonal prism, a second pentagonal prism and a digital receiving target are also arranged on the marble flat plate; the digital receiving target is connected to an image processor.

[0009] Preferably, the groove is arranged along the length direction of the marble slab, a long strip-shaped protrusion is provided in the middle of the groove, and a boss is provided at the end of the groove; the two precision slide rails are arranged in parallel on the protrusion, and at least one slider is provided on the precision slide rail, and the upper surface of the slider is connected to the first T-shaped guide rail through a connecting base; the grating ruler is arranged next to the protrusion, and the grating ruler is arranged in the groove.

[0010] Preferably, the first T-shaped guide rail slides along the precision slide rail through a motion control mechanism and is locked on the precision slide rail through a motion locking mechanism; the second T-shaped guide rail is fixedly arranged on the boss at the end of the groove through a base.

[0011] Preferably, the motion control mechanism includes a motion controller arranged on the side of the marble slab and a power unit electrically connected to the motion controller for driving the slider.

[0012] Preferably, the motion locking mechanism is arranged on one of the sliders, and the motion locking mechanism comprises a locking block arranged on the precision slide rail and connected to the slider, and a locking switch threadedly penetratingly connected to the locking block.

[0013] Preferably, the lengths of the grating scale and the marble slab are equal, and the grating scale reading head arranged on the grating scale is arranged on a connecting base between the slider and the first T-shaped guide rail through a connecting piece, and moves with the sliding of the T-shaped guide rail, thereby reading the precise distance between a pair of T-shaped guide rails.

[0014] Preferably, the elevator guide rail coplanarity laser detector mounting base, the first pentagonal prism, the second pentagonal prism and the digital receiving target are respectively installed at the four corners of the top surface of the marble slab.

[0015] Preferably, after the elevator guide rail coplanarity laser detector is placed on the elevator guide rail coplanarity laser detector placement base, the laser emission center of the elevator guide rail coplanarity laser detector, the center of the first pentagonal prism, the center of the second pentagonal prism and the center of the digital receiving target are located on the same straight line and the center offset is ≤0.3mm.

[0016] Preferably, after the elevator guide rail coplanarity laser detector is installed on the elevator guide rail coplanarity laser detector installation base, the laser line emitted by the elevator guide rail coplanarity laser detector is reflected by the first and second pentagonal prism optical paths in turn and then directly emitted to the center of the digital receiving target through a spatial distance of 5m.

[0017] Preferably, the marble slab is a grade 1 marble slab, which can meet the requirements of GB / T 20428-2006 for grade 1 marble slabs, wherein grade 1 marble slabs are used as calibration standards with higher precision requirements; the length of the marble slab is 3m, the width is 1m, and the flatness of the working surface is less than 0.034mm; and four identical support legs are fixedly arranged on the bottom surface of the marble slab.

[0018] Preferably, the image processor may be image processing software installed in a computer, and the digital receiving target transmits the received laser image to the image processing software in the computer via a wireless connection for subsequent data processing.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. The utility model integrates the calibration function of the parallelism between the measuring line and the main reference surface of the elevator guide rail coplanarity laser detector, the split elevator calibration ruler and the integrated elevator calibration ruler in one device, and can be used to calibrate the elevator guide rail coplanarity laser detector, the split elevator calibration ruler and the integrated elevator calibration ruler at the same time.

[0021] 2. The utility model uses a digital receiving target to replace the human eye reading and uses an image processor to process the laser image on the digital receiving target, which reduces the uncertainty component introduced by the large error of the human eye reading, improves the detection accuracy of the parallelism between the measuring line and the main reference surface of the elevator guide rail coplanarity laser detector, and thus improves the calibration effect of the device on the elevator guide rail coplanarity laser detector. At the same time, the use range of the calibration device is broadened by the pentagonal prism light path reflection method, so that it can cover the effective measurement range of the elevator guide rail coplanarity laser detector.

[0022] 3. The utility model realizes precise and automatic control of the distance between a pair of T-shaped guide rails by setting a motion control mechanism, a motion locking mechanism and a grating ruler, thereby improving the detection accuracy of the parallelism between the measuring line and the main reference surface of the split and integrated elevator calibration rulers; in addition, the calibration operation of the elevator guide rail coplanarity measuring instrument by the calibration device is reproducible and can be repeatedly calibrated after repeated operations.

[0023] In summary, the elevator guide rail coplanarity measuring instrument calibration device provided by the utility model has the advantages of high calibration accuracy, good stability, strong reproducibility, simple operation process, high degree of automation, and a large measurement range, which can cover the effective measurement range of the elevator guide rail coplanarity measuring instrument itself, and has stronger applicability. The application of the utility model fills the technical gap of the traceability of the elevator guide rail coplanarity measuring instrument, improves the traceability accuracy of the elevator guide rail coplanarity measuring instrument, improves the efficiency of the calibration work, and reduces the workload of the calibration personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0025] Figure 1 It is the overall structure diagram of the calibration device in the utility model;

[0026] Figure 2 It is a schematic cross-sectional view of the groove in the utility model;

[0027] Figure 3 This is a distribution diagram of the precision slide rail, grating ruler, first and second T-shaped guide rails in the groove of the utility model;

[0028] Figure 4 It is a partial structural schematic diagram of the motion control mechanism and the motion locking mechanism in the utility model;

[0029] Figure 5 To place the elevator rail coplanarity laser detector on Figure 1 An enlarged view of point A after the elevator guide rail coplanarity laser detector at point A is placed on the base.

[0030] Explanation of the reference numerals: 1-marble slab; 2-groove; 3-precision slide rail; 4-grating ruler; 5-first T-shaped guide rail; 6-second T-shaped guide rail; 7-base for mounting the elevator guide rail coplanarity laser detector; 8-first pentagonal prism; 9-second pentagonal prism; 10-digital receiving target; 11-grating ruler reading head; 12-motion locking mechanism; 13-motion controller; 14-slider; 15-locking block; 16-locking switch; 17-connecting piece. DETAILED DESCRIPTION

[0031] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and functions of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0032] Reference Figure 1-Figure 5 As a specific embodiment of the utility model, an elevator guide rail coplanarity measuring instrument calibration device includes a marble slab 1; the marble slab 1 is a level 1 marble slab, with a size of (3000×1000) mm and a working surface flatness of <0.034 mm. As the base technical indicators of the whole device, it meets the requirements for carrying out the elevator guide rail coplanarity measuring instrument calibration work; and four identical supporting legs are fixedly arranged on the bottom surface of the marble slab 1.

[0033] like Figure 2-3As shown, a groove 2 is provided on the top surface of the marble slab 1, and the groove 2 is arranged along the length direction of the marble slab 1. A long strip-shaped protrusion is provided in the middle of the groove 2, and a boss is provided at the end of the groove 2; and at least one slider 14 is provided on the precision slide rail 3, and the upper surface of the slider 14 is connected to the first T-shaped guide rail 5 through a connecting base; the grating ruler 4 is arranged beside the protrusion, the grating ruler 4 is arranged in the groove 2, and the grating ruler reading head on the grating ruler 4 is arranged on the connecting base between the slider 14 and the first T-shaped guide rail 5 through a connecting member 17.

[0034] like Figure 3-4 As shown, a grating ruler 4 with the same length as the marble slab 1 is provided on one side of the precision slide rail 3. The grating ruler reading head provided on the grating ruler 4 can slide along with the precision slide rail 3 driven by the slider 14 to realize the reading of the scale on the grating ruler 4.

[0035] A first T-shaped guide rail 5 is slidably arranged on the two precision slide rails 3; a second T-shaped guide rail 6 is arranged at the end of the groove 2, and the second T-shaped guide rail 6 is fixedly arranged on the boss at the end of the groove 2 through a base, such as Figure 3 shown.

[0036] The first T-shaped guide rail 5 slides along the precision slide rail 3 through a motion control mechanism, and is locked on the precision slide rail 3 through a motion locking mechanism 12 .

[0037] The motion control mechanism includes a motion controller 13 disposed on the side of the marble slab 1 and a power unit electrically connected to the motion controller 13 for driving the slider 14. The power unit includes a motor controlled by the motion controller 13 and a transmission structure driven by the motor, and the transmission structure can drive the slider 14 to slide along the precision slide rail 3, thereby driving the first T-shaped guide rail 5 to slide along the precision slide rail.

[0038] The motion locking mechanism 12 is disposed on one of the sliders 14, and the motion locking mechanism 12 includes a locking block 15 disposed on the precision slide rail 3 and connected to the slider 14, and a locking switch 16 threadedly connected to the locking block 15. When the motion locking mechanism 12 is in a locked state, the locking switch 16 is rotated to penetrate the locking block and abut against the precision slide rail 3, and the first T-shaped guide rail 5 is locked on the precision slide rail 3; when it is in an unlocked state, the locking switch 16 is rotated to separate from the precision slide rail 3, and the first T-shaped guide rail 5 can slide along the precision slide rail 3.

[0039] The first T-shaped guide rail 5 and the second T-shaped guide rail 6 form a pair of T-shaped guide rails for calibrating the elevator guide rail coplanarity measuring instrument. The distance between the pair of T-shaped guide rails is accurately and automatically controlled by the motion control mechanism, the motion locking mechanism 12 and the grating ruler 4.

[0040] An elevator guide rail coplanarity laser detector mounting base 7, a first pentagonal prism 8, a second pentagonal prism 9 and a digital receiving target 10 are also arranged at the four corners on the top surface of the marble slab 1; the digital receiving target 10 is wirelessly connected to an image processor; the image processor can receive laser image information from the digital receiving target 10.

[0041] After the elevator guide rail coplanarity laser detector is placed on the elevator guide rail coplanarity laser detector placement base 7, the laser emission center of the elevator guide rail coplanarity laser detector, the center of the first pentagonal prism 8, the center of the second pentagonal prism 9 and the center of the digital receiving target 10 are located on the same straight line and the center offset is ≤0.3mm.

[0042] After the elevator guide rail coplanarity laser detector is installed on the elevator guide rail coplanarity laser detector installation base 7, the laser line emitted by the elevator guide rail coplanarity laser detector is reflected by the optical path of the first pentagonal prism 8 and the second pentagonal prism 9 in turn and then directly projected to the center of the digital receiving target 10. The spatial distance passed by the laser line is 5m.

[0043] Application Example 1

[0044] This application embodiment provides a working process of a calibration device for calibrating the parallelism between a measuring line and a main reference surface of an elevator guide rail coplanarity laser detector, and the specific steps are as follows:

[0045] Step 1: Place the elevator guide rail coplanarity laser detector to be calibrated on the elevator guide rail coplanarity laser detector installation base 7, as shown in FIG. Figure 5 As shown, the switch of the elevator guide rail coplanarity laser detector is turned on, and a laser line is emitted. The laser line is turned 90° after passing through the first pentagonal prism 8, and then turned 90° again after passing through the second pentagonal prism 9, and finally directly hits the digital receiving target 10 in a direction parallel to the initial laser line direction;

[0046] Step 2: After the digital receiving target 10 receives the laser image, it transmits the laser image to the image processor, which analyzes the laser image to obtain the offset △Xmm of the spatial coordinates of the center of the laser point relative to the standard value of the spatial coordinates of the center of the digital receiving target 10. Since the laser line starts from the center of the laser and reaches the center of the digital receiving target 10, the total distance it travels is 5m. Finally, △Xmm / 5m is used as the calibration result of the parallelism between the measurement line of this elevator guide rail coplanarity laser detector and the main reference plane.

[0047] Application Example 2

[0048] This application embodiment provides a working process of a calibration device for calibrating the parallelism between a measuring line and a main reference surface of an integrated elevator calibration ruler, and the specific steps are as follows:

[0049] Step 1: After installation and debugging by laser tracker, make the working surface flatness of a pair of T-type guide rails ≤ 0.3mm;

[0050] Step 2: Turn on the locking switch 16 of the motion locking mechanism 12. After inputting the moving distance L of the first T-shaped guide rail 5 on the operation interface of the motion controller 13, the power unit drives the slider 14 to move with the grating ruler 4 as the length standard. The slider 14 drives the first T-shaped guide rail to slide along the precision slide rail 3, so that a distance Lm is generated between the first T-shaped guide rail 5 and the second T-shaped guide rail. After the movement is completed, the locking switch 16 is rotated to make the locking mechanism lock the first T-shaped guide rail 5, so that the first T-shaped guide rail 5 is fixed in the current position, so that the grating ruler 4 can accurately measure the distance between a pair of T-shaped guide rails;

[0051] Step 3: Install the integrated elevator calibration ruler on the first T-shaped guide rail 5 and the second T-shaped guide rail 6, adjust the integrated elevator calibration ruler to make it horizontal, read the value of the pointer offset zero scale line on the reading scale as the offset △Xmm, and finally use △Xmm / Lm as the calibration result of the parallelism between the integrated elevator calibration ruler measuring line and the main reference surface.

[0052] Application Example 3

[0053] This application embodiment provides a working process of a calibration device for calibrating the parallelism between a measuring line and a main reference surface of a split elevator calibration ruler, and the specific steps are as follows:

[0054] The first step is the same as the first step of Application Example 2;

[0055] Step 2: Same as the second step of Application Example 2;

[0056] Step 3: Install the two ends of the split elevator calibration ruler on the first T-shaped guide rail 5 and the second T-shaped guide rail 6 respectively, adjust the split elevator calibration ruler to make it horizontal, then insert the nylon line at the measuring line positions at both ends and straighten the nylon line, read the value of the nylon line offset from the zero scale of the left and right scales on the reading scale, and take the maximum absolute value of the two as the offset △Xmm, and finally take △Xmm / Lm as the calibration result of the parallelism between the split elevator calibration ruler measuring line and the main reference surface.

[0057] From the above technical solutions, it can be seen that the elevator guide rail coplanarity measuring instrument calibration device provided by the utility model can be used to calibrate the parallelism between the measuring line and the main reference surface of the elevator guide rail coplanarity laser detector, the split elevator calibration ruler and the integrated elevator calibration ruler. In addition, the calibration device uses a digital receiving target and an image processor to improve the calibration effect; uses a motion control mechanism, a motion locking mechanism and a grating ruler to achieve accurate and automatic control of the distance between a pair of T-shaped guide rails; and at the same time, the measurement range of the calibration device is broadened by the pentagonal prism optical path reflection method.

[0058] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An elevator guide rail coplanarity measuring instrument calibration device, characterized in that: The invention comprises a marble slab (1), wherein a groove (2) is provided on the top surface of the marble slab (1), wherein two precision slide rails (3) and a grating ruler (4) are arranged in the groove (2); a first T-shaped guide rail (5) is arranged above the two precision slide rails (3); a second T-shaped guide rail (6) is fixedly arranged at the end of the groove (2); an elevator guide rail coplanarity laser detector mounting base (7), a first pentagonal prism (8), a second pentagonal prism (9) and a digital receiving target (10) are also arranged on the marble slab (1); and the digital receiving target (10) is connected to an image processor.

2. The elevator guide rail coplanarity measuring instrument calibration device according to claim 1, characterized in that: The groove (2) is arranged along the length direction of the marble slab (1), a long strip-shaped protrusion is provided in the middle of the groove (2), and a boss is provided at the end of the groove (2); two precision slide rails (3) are arranged in parallel on the protrusion, and at least one slider (14) is provided on the precision slide rail (3), and the upper surface of the slider (14) is connected to the first T-shaped guide rail (5) through a connecting base; the grating ruler (4) is arranged beside the protrusion, and the grating ruler (4) is arranged in the groove (2).

3. The elevator guide rail coplanarity measuring instrument calibration device according to claim 2, characterized in that: The first T-shaped guide rail (5) slides along the precision slide rail (3) through a motion control mechanism and is locked on the precision slide rail (3) through a motion locking mechanism (12); the second T-shaped guide rail (6) is fixedly arranged on a boss at the end of the groove (2) through a base.

4. The elevator guide rail coplanarity measuring instrument calibration device according to claim 3, characterized in that: The motion control mechanism comprises a motion controller (13) arranged on the side of the marble slab (1) and a power unit electrically connected to the motion controller (13) for driving the slider (14).

5. The elevator guide rail coplanarity measuring instrument calibration device according to claim 3, characterized in that: The motion locking mechanism (12) is arranged on one of the sliders (14), and the motion locking mechanism (12) comprises a locking block (15) arranged on the precision slide rail (3) and connected to one of the sliders (14), and a locking switch (16) threadedly connected to the locking block (15).

6. The elevator guide rail coplanarity measuring instrument calibration device according to claim 2, characterized in that: The lengths of the grating ruler (4) and the marble slab (1) are equal, and the grating ruler reading head provided on the grating ruler (4) is provided on a connection base between the slider (14) and the first T-shaped guide rail (5) via a connecting piece (17).

7. The elevator guide rail coplanarity measuring instrument calibration device according to claim 1, characterized in that: The elevator guide rail coplanarity laser detector placement base (7), the first pentagonal prism (8), the second pentagonal prism (9) and the digital receiving target (10) are respectively installed at the four corners of the top surface of the marble slab (1).

8. The elevator guide rail coplanarity measuring instrument calibration device according to claim 7, characterized in that: After the elevator guide rail coplanarity laser detector is placed on the elevator guide rail coplanarity laser detector placement base (7), the laser emission center of the elevator guide rail coplanarity laser detector, the center of the first pentagonal prism (8), the center of the second pentagonal prism (9) and the center of the digital receiving target (10) are located on the same straight line and the center offset is ≤0.3mm.

9. The elevator guide rail coplanarity measuring instrument calibration device according to claim 7, characterized in that: After the elevator guide rail coplanarity laser detector is installed on the elevator guide rail coplanarity laser detector installation base (7), the laser light emitted by the elevator guide rail coplanarity laser detector is reflected by the optical paths of the first pentagonal prism (8) and the second pentagonal prism (9) in sequence and then directly irradiated to the center of the digital receiving target (10), and the space distance passed is 5m.

10. The elevator guide rail coplanarity measuring instrument calibration device according to claim 1, characterized in that: The marble slab (1) is a grade 1 marble slab; the length of the marble slab (1) is 3 m, the width is 1 m, and the flatness of the working surface is less than 0.034 mm; and four identical supporting legs are fixedly arranged on the bottom surface of the marble slab (1).

Images