A method for measuring the net size of an elevator hoistway

Abstract

The present invention relates to the technical field of elevator shaft measurement, and discloses a method for measuring the net size of an elevator shaft, which includes the following steps: placing a measuring device; longitudinally partitioning the elevator shaft; laser measurement; obtaining the measurement distance; outputting a measurement data diagram; obtaining the net size of the elevator shaft. By placing a laser measuring device in the pit, the relationship between the height and the horizontal distance is calculated based on the length and the included angle of the laser beam emitted by the laser measuring device. At the same time, in combination with the included angles in the U area, V area and W area, a measurement data diagram is output. According to the measurement data diagram, the minimum horizontal size in four directions is obtained, and the net size of the elevator shaft is obtained by adding the minimum values. Through this method, the present invention can measure multiple groups of data, and the measurement data is highly accurate, and can quickly and extremely accurately measure the net size of the elevator shaft. The measurement method is also convenient and time-saving.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator shaft measurement, and particularly to a method for measuring the net size of an elevator shaft. Background Art

[0002] Before the installation of an elevator, in order to make the size of the elevator match the size of the shaft, the elevator shaft, as a carrier for elevator installation, is very important in the preliminary measurement. Since it is impossible to achieve perfect precision during the construction of the elevator shaft, there are deviations, and there are different degrees of deviations in the four sides of the elevator shaft according to the technical level of the construction team. When the overall layout design of the elevator is relatively compact, it is necessary to accurately know the net clearance size of the elevator shaft to avoid the situation where the elevator cannot be installed due to a large deviation in the verticality of the elevator shaft resulting in a smaller actual width and depth.

[0003] In the prior art, there are two methods for measuring the shaft: (1) Measure the width and depth of each layer of the shaft at the elevator shaft door opening on each floor, and then take the minimum value, which is the net size of the shaft. This method is relatively approximate and cannot accurately measure the actual net size of the shaft, and it cannot measure when the shaft wall is uneven; (2) Hang a line from the top of the elevator shaft to the ground, with a heavy weight hanging below, and then measure the distances from the line to the front, back, left, and right four walls at the door opening on each floor, and then take the minimum value as the net size. This method is relatively troublesome and time-consuming, and deviations cannot be measured in places where people cannot measure between floors. Summary of the Invention

[0004] Based on the above, the purpose of the present invention is to provide a method for measuring an elevator shaft, which can quickly and extremely accurately measure the net size of the elevator shaft.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides a method for measuring the net size of an elevator shaft, including the following steps:

[0007] Place the measuring device, and place the laser measuring device at the first position at the bottom of the elevator shaft;

[0008] Vertically partition the elevator shaft, and divide the vertical height of the elevator shaft into a U area, a V area, and a W area from bottom to top;

[0009] Laser measurement, the laser measuring device can emit a number of laser measurement beam bundles in the first direction, the second direction, the third direction, and the fourth direction respectively, and the first direction, the second direction, the third direction, and the fourth direction respectively correspond to the four inner walls of the elevator shaft;

[0010] Obtain the measured distance, and calculate the horizontal distances from the laser measurement device to each wall in the longitudinal direction along the first direction, the second direction, the third direction, and the fourth direction respectively according to the length and angle of each laser measurement beam.

[0011] Output a measurement data graph, and respectively output the horizontal distance curve graphs of the laser measurement device to the walls in the longitudinal direction along the first direction, the second direction, the third direction, and the fourth direction. Among them, the first X-axis is the included angle of the U area, the V area, and the W area, the second X-axis is the height of the elevator shaft, and the Y-axis is the horizontal distance from the laser measurement device to the wall surface.

[0012] Obtain the net size of the elevator shaft. Add the minimum horizontal distance measured by the laser measurement device to the first direction and the minimum horizontal distance to the third direction as the minimum width of the elevator shaft, and add the minimum horizontal distances measured by the laser measurement device to the second direction and the fourth direction as the minimum depth of the elevator shaft.

[0013] Preferably, perform a dispersion analysis operation on the distance data measured by the laser measurement device along the fourth direction to the wall surface, and remove the data outside the wall holes on the wall surface in the fourth direction.

[0014] Preferably, the first position is located in the middle of the bottom of the elevator shaft.

[0015] Preferably, the measurement method further includes:

[0016] Place the laser measurement device at the second position, the third position, the fourth position, and the fifth position respectively;

[0017] Repeat the above steps respectively to obtain the minimum elevator shaft depth and width at the second position, the third position, the fourth position, and the fifth position;

[0018] Compare the minimum elevator shaft depth and width and the maximum elevator shaft depth and width among the first position, the second position, the third position, the fourth position, and the fifth position, remove the minimum elevator shaft depth and width and the maximum elevator shaft depth and width data, and select the average value of the other elevator shaft depth and width as the final net size of the elevator shaft.

[0019] Preferably, the bottom of the elevator shaft is divided into four equal regions, and the second position, the third position, the fourth position, and the fifth position are respectively located at the middle positions of each region.

[0020] Preferably, the included angle between adjacent laser beam bundles in the U area is greater than the included angle between adjacent laser beam bundles in the V area, and the included angle between adjacent laser beam bundles in the V area is greater than the included angle between adjacent laser beam bundles in the W area.

[0021] Preferably, the laser measuring device includes:

[0022] A laser distance measuring main unit, on which a transverse laser emission channel and a longitudinal laser emission channel are provided;

[0023] An operation display, which is connected to the laser distance measuring main unit through a data transmission cable.

[0024] Preferably, feet are provided at the bottom of the laser distance measuring main unit;

[0025] Adjusting screws are provided on the feet.

[0026] The beneficial effects of the present invention are as follows:

[0027] The present invention provides a method for measuring the net size of an elevator hoistway. By placing a laser measuring device in the pit, the relationship between the height and the horizontal distance is calculated through the length and included angle of the laser beam bundles emitted by the laser measuring device. At the same time, in combination with the included angles in the U area, V area, and W area, a measurement data graph is output. According to the measurement data graph, the minimum horizontal dimensions in four directions are obtained, and the net size of the elevator hoistway is obtained by adding the minimum values. Through this method, the present invention can measure multiple groups of data, and the measurement data is highly accurate, and can quickly and extremely accurately measure the net size of the elevator hoistway. The measurement method is also convenient and time-saving. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the content of the embodiments of the present invention and these drawings without creative efforts.

[0029] Figure 1 It is a schematic diagram of the laser measuring device placed at the first position in the embodiment of the present invention;

[0030] Figure 2 It is a schematic diagram of the elevator hoistway zoning in the embodiment of the present invention;

[0031] Figure 3 It is a schematic diagram of the included angle between adjacent laser beam bundles of the laser measuring device in the embodiment of the present invention;

[0032] Figure 4 It is a schematic diagram of a single laser beam bundle of the laser measuring device in the embodiment of the present invention;

[0033] Figure 5 Schematic diagram of the measured data graph output in the embodiment of the present invention;;

[0034] Figure 6 Schematic diagram of the front wall data in the measured data graph output in the embodiment of the present invention after adjustment;

[0035] Figure 7 Schematic diagram of the laser measuring device placed at the second position in the embodiment of the present invention;

[0036] Figure 8 Schematic diagram of the laser measuring device placed at the third position in the embodiment of the present invention;

[0037] Figure 9 Schematic diagram of the laser measuring device placed at the fourth position in the embodiment of the present invention;

[0038] Figure 10 Schematic diagram of the laser measuring device placed at the fifth position in the embodiment of the present invention;

[0039] Figure 11 Schematic diagram of the structure of the laser measuring device in the embodiment of the present invention.

[0040] In the figure:

[0041] A, the first direction; B, the second direction; C, the third direction; D, the fourth direction;

[0042] 1, laser measuring device; 101, laser distance measuring host; 102, adjusting screw; 103, floor footing; 104, horizontal laser emission channel; 105, vertical laser emission channel; 106, data transmission cable; 107, operation display. Detailed implementation manners

[0043] In order to make the technical problems solved by the present invention, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0044] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0045] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above the", and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below the", and "under the" second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0046] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0047] The embodiment of the present invention provides a method for measuring the net size of an elevator shaft. The elevator shaft referred to in the embodiment of the present invention is usually a rectangular elevator shaft. The method for measuring the net size of the elevator shaft includes the following steps:

[0048] Step 1: Place the measuring device. Place the laser measuring device 1 at the first position at the bottom of the elevator shaft, as Figure 1 shown. Preferably, the first position is located in the middle of the bottom of the elevator shaft.

[0049] Step 2: Longitudinally divide the elevator shaft. Divide the longitudinal height of the elevator shaft from bottom to top into area U, area V, and area W. It should be noted that the top of the elevator shaft is area X, and area X is an invalid area and is not included in the measurement data during actual measurement.

[0050] Step 3: Laser measurement. The laser measurement device 1 can emit a number of laser measurement beam bundles in the first direction A, the second direction B, the third direction C, and the fourth direction D respectively. The first direction A, the second direction B, the third direction C, and the fourth direction D respectively correspond to four vertical directions, and the first direction A, the second direction B, the third direction C, and the fourth direction D respectively correspond to the four inner walls of the elevator shaft. Specifically, referring to Figure 1 , the first direction A corresponds to shooting at the right wall of the inner wall of the elevator shaft, the second direction B corresponds to shooting at the rear wall, the third direction C corresponds to shooting at the left wall, and the fourth direction D corresponds to shooting at the front wall; as Figure 2 shown, the number of beam bundles emitted by the laser measurement device 1 in each direction is from 0° to 90°. Referring to Figure 3 shown, the reason for dividing the longitudinal height of the elevator shaft into the U area, the V area, and the W area from bottom to top is that if the laser beam bundles shoot at the wall surface at the same angle, the higher the height, the greater the height difference between two adjacent beam bundles on the wall surface, and the lower the accuracy of the measured data. Therefore, preferably, the angles of the laser beam bundles in the U area are equal, the angles of the laser beam bundles in the V area are equal, and the angles of the laser beam bundles in the U area are equal. However, the angle between adjacent laser beam bundles in the U area is greater than the angle between adjacent laser beam bundles in the V area, and the angle between adjacent laser beam bundles in the V area is greater than the angle between adjacent laser beam bundles in the W area. The sizes of the angles of the U area, the V area, and the W area can be adjusted adaptively according to the elevator shaft. It should be noted that the smaller the selected angle, the more measurement data, and the more accurate the measurement result.

[0051] Step 4: Obtain the measurement distance. According to the length and angle of each laser measurement beam bundle, calculate the horizontal distance from the laser measurement device 1 to each wall surface in the longitudinal direction along the first direction A, the second direction B, the third direction C, and the fourth direction D respectively; specifically, as Figure 4 shown, assuming that α is the angle of the laser beam bundle and L is the length of the laser beam bundle, then the shaft height H = L * sinα, and the horizontal distance n = L * cosα.

[0052] Step 5: Output the measurement data graph. As Figure 5 shown, respectively output the horizontal distance curve graphs from the laser measurement device 1 to the walls in the first direction A, the second direction B, the third direction C, and the fourth direction D in the longitudinal direction. The first X-axis is the angle of the U area, the V area, and the W area, the second X-axis is the height of the elevator shaft, and the Y-axis is the horizontal distance from the laser measurement device 1 to the wall surface; it should be noted that in Figure 5In the data graph of the fourth direction D, it can be seen that there are data deviations because the wall opening in the front wall of the elevator is reserved for the elevator door. Preferably, perform a dispersion analysis operation on the distance data from the laser measurement device 1 along the fourth direction D to the wall surface, remove the data outside the wall opening of the wall surface in the fourth direction D, and after adjustment, as Figure 6 shown.

[0053] Step six: As Figure 5 shown, obtain the net size of the elevator shaft. Add the minimum horizontal distance to the first direction A and the minimum horizontal distance to the third direction C measured by the laser measurement device 1 as the minimum width of the elevator shaft. Add the minimum horizontal distances to the second direction B and the fourth direction D measured by the laser measurement device 1 as the minimum depth of the elevator shaft. The net size of the elevator shaft is then converted to this minimum width and minimum depth. In addition, the perpendicularity deviation in each direction can also be obtained from the output measurement data graph.

[0054] The embodiment of the present invention provides a method for measuring the net size of an elevator shaft. By placing a laser measurement device 1 in the pit, calculate the relationship between the height and the horizontal distance through the length and angle of the laser beam emitted by the laser measurement device 1. At the same time, combine the included angles in the U area, V area, and W area to output a measurement data graph. Obtain the minimum horizontal dimensions in four directions according to the measurement data graph, and add the minimum values to obtain the net size of the elevator shaft. Through this method, the present invention can measure multiple groups of data, and the measurement data is highly accurate, and can quickly and extremely accurately measure the net size of the elevator shaft. The measurement method is also convenient and saves time. Further, it is possible to judge whether there is a protruding situation on the wall surface in a certain height direction through the output measurement data graph, and it is possible to judge whether the shaft needs to be rectified according to the output measurement data graph by oneself.

[0055] In some embodiments, the measurement method further includes:

[0056] Place the laser measurement device 1 at the second position, the third position, the fourth position, and the fifth position respectively; preferably, the bottom of the elevator shaft is divided into four equal areas, and the second position, the third position, the fourth position, and the fifth position are respectively located at the middle positions of each area. Specifically, as Figure 7 shown, the second position is the middle area about one-fourth of the left wall and the rear wall. As Figure 8 shown, the third position is the middle area about one-fourth of the right wall and the rear wall. As Figure 9 shown, the fourth position is the middle area about one-fourth of the front wall and the left wall. As Figure 10 shown, the fifth position is the middle area about one-fourth of the front wall and the right wall.

[0057] Repeat the above steps respectively to obtain the minimum elevator shaft depth and width at the second position, the third position, the fourth position, and the fifth position;

[0058] Compare the minimum elevator shaft depth and width and the maximum elevator shaft depth and width among the first position, the second position, the third position, the fourth position, and the fifth position. Remove the data of the minimum elevator shaft depth and width and the maximum elevator shaft depth and width, and select the average value of the other elevator shaft depth and width data as the final net size of the elevator shaft. By measuring the data at different positions, comparing multiple sets of data, and combining the average value, the measurement accuracy can be better guaranteed.

[0059] In some embodiments, as Figure 11 shown, the laser measurement device 1 includes: a laser distance measurement host 101, on which a transverse laser emission channel 104 and a longitudinal laser emission channel 105 are provided. The transverse laser emission channel 104 respectively emits laser beams in the first direction A and the third direction C, and the longitudinal laser emission channel 105 respectively emits laser beams in the second direction B and the fourth direction D; an operation display 107, which is connected to the laser distance measurement host 101 through a data transmission cable 106, and the operation display 107 is used to display the output measurement data graph. A floor foot 103 is provided at the bottom of the laser distance measurement host 101; an adjustment screw 102 is provided on the floor foot 103. Specifically, the laser distance measurement host 101 can be completely leveled by the adjustment screw 102. In the embodiment of the present invention, during actual measurement, the laser distance measurement host 101 is leveled by the adjustment screw 102, and then the laser beams are emitted. The transverse laser emission channel 104 is perpendicular to the left and right walls, and the longitudinal laser emission channel 105 is perpendicular to the front and back walls. After adjusting the position, the measurement is carried out, and after the measurement is completed, the measurement data graph is output through the operation display 107. It should be noted that several sets of data can also be measured and averaged to ensure the test accuracy.

[0060] Note that the above is only a preferred embodiment of the present invention and the applied technical principle. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here. Various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for measuring the net size of an elevator shaft, characterized in that: The following steps are involved: Placing the measuring device, placing the laser measuring device (1) at a first position at the bottom of the elevator shaft; The elevator shaft is longitudinally divided into U zone, V zone and W zone in the longitudinal height from bottom to top, wherein the angle between adjacent laser beams in the U zone is greater than the angle between adjacent laser beams in the V zone, and the angle between adjacent laser beams in the V zone is greater than the angle between adjacent laser beams in the W zone; Laser measurement, the laser measurement device (1) can emit a plurality of laser measurement beams in a first direction (A), a second direction (B), a third direction (C) and a fourth direction (D), respectively, the angle of the laser measurement beams being 0° to 90°, the first direction (A), the second direction (B), the third direction (C) and the fourth direction (D) respectively corresponding to the four walls inside the elevator shaft; Obtaining the measured distance, and calculating the horizontal distance from the laser measuring device (1) to each wall along the first direction (A), the second direction (B), the third direction (C) and the fourth direction (D) in the longitudinal direction according to the length and angle of each laser measuring beam; Outputting a measurement data graph, respectively outputting a horizontal distance curve graph of the laser measuring device (1) in the longitudinal direction to the wall in the first direction (A), the second direction (B), the third direction (C) and the fourth direction (D), wherein the first X-axis is the angle of the U zone, the angle of the V zone and the angle of the W zone, the second X-axis is the height of the elevator shaft, and the Y-axis is the horizontal distance from the laser measuring device (1) to the wall; The net size of the elevator shaft is obtained, and the minimum horizontal distance to the first direction (A) and the minimum horizontal distance to the third direction (C) measured by the laser measuring device (1) are added together to obtain the minimum width of the elevator shaft, and the minimum horizontal distance to the second direction (B) and the minimum horizontal distance to the fourth direction (D) measured by the laser measuring device (1) are added together to obtain the minimum depth of the elevator shaft.

2. A method for measuring the net dimensions of an elevator shaft according to claim 1, characterized in that: A discreteness analysis operation is performed on the distance data from the laser measuring device (1) to the wall along the fourth direction (D), and data other than the wall hole of the wall in the fourth direction (D) is removed.

3. A method for measuring the net size of an elevator shaft according to claim 1 or 2, characterized in that: The first position is located in the middle of the bottom of the elevator shaft.

4. A method for measuring the net dimensions of an elevator shaft according to claim 3, characterized in that: The measuring method further comprises: placing the laser measuring device (1) at a second position, a third position, a fourth position and a fifth position respectively; Repeat the above steps to obtain the minimum elevator shaft depth and width at the second position, the third position, the fourth position and the fifth position respectively; Compare the smallest elevator shaft depth, width and the largest elevator shaft depth, width among the first position, the second position, the third position, the fourth position and the fifth position, remove the smallest elevator shaft depth, width and the largest elevator shaft depth, width data, and select the average of the other elevator shaft depths and widths as the final elevator shaft net size.

5. A method for measuring the net dimensions of an elevator shaft according to claim 4, characterized in that: The bottom of the elevator shaft is divided into four equal areas, and the second position, the third position, the fourth position and the fifth position are respectively located at the middle position of each area.

6. The method for measuring the net size of an elevator shaft according to claim 1, characterized in that: The laser measuring device (1) comprises: A laser distance measuring host (101) is provided with a transverse laser emitting path (104) and a longitudinal laser emitting path (105); A computing display (107) is connected to the laser ranging host (101) via a data transmission cable (106).

7. A method for measuring the net dimensions of an elevator shaft according to claim 6, characterized in that: The bottom of the laser distance measuring main unit (101) is provided with a foot (103); An adjusting screw (102) is provided on the foot (103).

Images