Tool and method for measuring relative height difference of four corners of support base plate

Abstract

The invention discloses a tool and a method for measuring the relative height difference of four corners of a support bottom plate. The tool comprises a leveling tube, a height gauge and a laser transmitter, the level tube is arranged to be used for calibrating horizontal positions of two measurement target positions; the number of the height gauges is two, the two height gauges are respectively arranged at two measurement target positions, and the scales, corresponding to the two height gauges, of the horizontal positions at the two ends of the level tube are the same; the laser emitter is arranged to be capable of vertically irradiating on a vertical coplanar plane where the two height gauges are located, and emitted laser can coincide with a reference plane or a reference line; and the reference surface or the reference line is parallel to the target measurement surface. The tool and the method are used for measuring the relative height difference of the four corners of the lower surface of the lower support plate of the bridge support, wherein the upper surface of the lower support plate is a non-machining surface, and the measurement precision is high.

Description

Technical Field

[0001] The invention relates to a bridge bearing, and in particular to a tool and method for measuring the relative height difference of four corners of a bearing bottom plate. Background Art

[0002] Railway bridge bearings are set between the bridge superstructure (beam) and the substructure (piers and abutments). They bear and transmit vertical and horizontal loads, and adapt to the relative displacement and rotation of the bridge superstructure and substructure through the relative slip of components or the deformation of the components themselves.

[0003] When installing the bearing, the bottom surface of the lower bearing plate should be flat, so the relative height difference of the four corners of the bearing bottom plate should be measured and checked. Since the bottom surface of the bearing plate is a hidden project (the grouting surface is 3-5mm higher than the bottom surface of the bearing plate), the relative height difference of the four corners of the bearing bottom plate is currently measured based on the upper surface of the lower bearing plate.

[0004] However, most of the drawings used for simply supported beam supports in China are TJQZ-8360, which has the following requirements for the upper surface of the support lower plate: the upper surface of the support lower plate can be a non-machined surface, and the plate thickness limit deviation is 0-+3mm. The non-machined surface of the upper surface of the support lower plate affects the measurement accuracy, causing great inconvenience to the measurement of the support during construction and operation. Summary of the invention

[0005] The purpose of the present invention is to provide a tool and method for measuring the relative height difference of the four corners of a bearing bottom plate. The tool and method measure the relative height difference of the four corners of the lower surface of a lower bearing plate of a bridge bearing whose upper surface is a non-machined surface, and have high measurement accuracy.

[0006] In order to achieve the above-mentioned object, the present invention provides a tool for measuring the relative height difference of the four corners of the support base plate, the tool comprising a level tube, a height gauge and a laser transmitter; The level tube is configured to calibrate the horizontal positions of two measurement target positions; Two height gauges are provided, and the two height gauges are respectively arranged at two measurement target positions, and the horizontal positions at both ends of the level tube correspond to the same scales on the two height gauges; The laser emitter is arranged to be able to vertically illuminate the vertical coplane where the two height gauges are located, and the emitted laser can coincide with the reference surface or reference line; The reference surface or reference line is parallel to the target measurement surface.

[0007] Preferably, the reference surface is a plane, and the reference line is a knife closing line.

[0008] Preferably, a mounting frame is provided at the bottom of the laser emitter; the laser emitter can be universally adjusted relative to the mounting frame.

[0009] The present invention also provides a method for measuring the relative height difference of the four corners of the support base plate, the method comprising the following steps: S1, turn on the laser transmitter to emit a laser beam that coincides with the reference surface or reference line; S2, placing two height gauges against two measuring target positions respectively, and calibrating the heights of the two height gauges through a level tube so that the scales on the two height gauges are aligned; S3, read the laser beam readings on the two height scales h m 、h n , then the height difference △h of the target measurement surface corresponding to the two measurement target positions mn =|h m -h n |; S4, continue to measure the height difference between any two other measurement target positions according to the steps of S1-S3.

[0010] Preferably, steps S1-S4 are repeated by changing different reference surfaces or reference lines to measure the height difference between any two measurement target positions, and the average value is taken as the final height difference value.

[0011] According to the above technical scheme, the tooling and method of the present invention measure the relative height difference of the four corners of the lower surface of the lower bearing plate of the bridge bearing whose upper surface is a non-machined surface, with high measurement accuracy.

[0012] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the overall structure of a preferred implementation method of a railway bridge support; Figure 2 is a schematic diagram of the overall structure of a preferred embodiment of a lower support; Figure 3 is a schematic diagram of the overall structure of another preferred embodiment of the lower support; Figure 4 It is a structural schematic diagram in which the laser line is irradiated on the reference line of the lower support; Figure 5 It is a schematic diagram of the installation structure of a preferred embodiment of a laser transmitter; Figure 6 This is a schematic diagram of the height difference measurement of the bottom surface of the lower support; Figure 7The present invention is a schematic diagram of the assembly structure of a preferred embodiment of a height gauge and a level tube.

[0015] Description of Reference Numerals 1-bridge support; 2-lower support; 3-upper surface of lower support; 4-bottom surface of lower support; 5-reference line; 6-reference surface; 7-laser transmitter; 8-mounting frame; 9-level tube; 10-height gauge; 11-base; 12-ruler; 13-hard transparent tube; 14-hose; 15-movable plate; 16-rotating height adjustment screw. DETAILED DESCRIPTION

[0016] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0017] In the present invention, unless otherwise stated, directional words contained in terms such as "up, down, left, right, front, back, inside, outside" merely represent the orientation of the terms in normal usage, or are common names understood by those skilled in the art, and should not be regarded as limitations on the terms.

[0018] See also Figure 1-6 As shown, the present invention provides a tool for measuring the relative height difference of the four corners of the support base plate, the tool comprising a level tube 9, a height gauge 10 and a laser emitter 7; the level tube 9 is configured to calibrate the horizontal position of two measurement target positions; two height gauges 10 are provided, and the two height gauges 10 are respectively arranged at two measurement target positions, and the horizontal positions at both ends of the level tube 9 correspond to the same scales on the two height gauges 10; the laser emitter 7 is configured to be able to vertically irradiate the vertical coplane where the two height gauges 10 are located, and the emitted laser can coincide with the reference surface 6 or the reference line 5; the reference surface 6 or the reference line 5 is parallel to the target measurement surface.

[0019] According to the implementation of the above technical solution, the relative height difference of the four corners of the bearing bottom plate of the Tongqiao TJQZ-8360 bearing is measured as an example. The reference surface 6 is as follows Figure 4 The horizontal plane of the basin ring shown in Figure 3 The basin ring closing line shown in the figure is parallel to the bottom surface 4 of the lower support. The level tube 9 is used to level the height ruler 10 in the two measurement target positions to facilitate the calculation of the height difference. The laser line is emitted by the laser emitter 7, such as Figure 4 and 6 , so that the laser line coincides with the reference surface 6 or the reference line 5, thereby expanding the range of the reference surface 6 or the reference line 5, and reading the corresponding scale on the corresponding height ruler 10, the absolute value of the difference between the scale values ​​on the two laser lines is the relative height difference of the four corners of the support base plate.

[0020] In this embodiment, a mounting frame 8 is disposed at the bottom of the laser emitter 7 ; the laser emitter 7 can be universally adjusted relative to the mounting frame 8 .

[0021] Through such an arrangement, the laser emitter 7 can adjust the azimuth and angle of the emission line so that it can coincide with the reference plane or reference line 5 .

[0022] Of course, in order to facilitate the adjustment of the height of the height gauge 10, the same scales of the two height gauges 10 are aligned with the liquid level on the level tube 9. The height gauge 10 may include a base 11, which may be a double-layer structure, with a movable plate 15 on the top, a ruler 12 on the movable plate 15, and a rotating height adjustment screw 16 between the two layers.

[0023] See also Figure 7 The level tube 9 can be divided into three sections. The hard transparent tube bodies 13 at both ends are fixed sections and are installed on the base 11. The side of the base 11 is provided with an interface connected to the hard transparent tube body 13, and a hose 14 is provided between the two interfaces. Among them, the height adjustment of the ruler 12 is independent and will not affect the hard transparent tube body 13.

[0024] The present invention also provides a method for measuring the relative height difference of the four corners of the support base plate, the method comprising the following steps: S1, turn on the laser transmitter 7 to emit a laser beam that coincides with the reference surface 6 or the reference line 5; S2, placing two height gauges 10 against two measuring target positions respectively, and calibrating the heights of the two height gauges 10 through a level tube 9 so that the scales on the two height gauges 10 are aligned; S3, read the laser beam readings on the two height scales 10 h m 、h n , then the height difference △h of the target measurement surface corresponding to the two measurement target positions mn =|h m -h n |; S4, continue to measure the height difference between any two other measurement target positions according to the steps of S1-S3.

[0025] Take the measurement of the relative height difference of the four corners of the bearing base plate of the Tongqiao TJQZ-8360 bearing as an example to illustrate, see Figure 3 The measuring positions include four positions a, b, c, and d. Place the level tube 9 and the height gauge 10 at the corners a and b of the lower support plate 2 in front of the laser emitter 7. Keep the liquid levels on both sides of the level tube 9 flush. Read the laser line on the height gauge 10. a 、h b , relative height difference between points a and b △h ab = |h a1-h b1 |, and then measure the relative height difference △h between points a and d in the same way ad = |h a2 -h d1 |, relative height difference between points a and c △h ac = |h a3 -h c1 |; Relative height difference between points b and c △h bc = |h b2 -h c2 |; Relative height difference between points b and d △h bd = |h b3 -h d2 |; Relative height difference between points c and d △h cd = |h c3 -h d3 |.

[0026] In order to obtain more accurate measurement results, when the lower support 2 has more than two reference surfaces or reference lines 5, steps S1-S4 can be repeated by replacing different reference surfaces 6 or reference lines 5 to measure the height difference between any two measurement target positions, and the average value is used as the final height difference value.

[0027] The present invention is provided with a laser emitter 7, a level tube 9 and a height gauge 10. The laser emitter 7 can magnify the measurement reference surface or reference line 5. The level tube 9 cooperates with the height gauge 10 to quickly and conveniently measure the height difference of the four corners of the bottom plate of the support 2 under the support. This method is not affected by the non-processed surface of the upper surface of the support lower seat plate, is easy to carry and operate, and can effectively improve the measurement accuracy and measurement efficiency. At the same time, the reference surface is drawn out by the laser surface method, which can also be applied to measure the support angle during the use of the support.

[0028] Of course, when the upper surface of the lower support 2 plate is a processing surface, the communicating vessel tooling including the level and the height gauge 10 can be directly placed on the four corners of the upper surface of the lower support 2 plate to read the liquid level difference, and the liquid level difference value is the relative height difference of the four corners of the bottom plate of the lower support 2 plate.

[0029] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0030] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0031] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A tool for measuring the relative height difference of the four corners of a support base plate, characterized in that: The tooling comprises a level tube (9), a height gauge (10) and a laser transmitter (7); The level tube (9) is configured to calibrate the horizontal positions of two measurement target positions; Two height gauges (10) are provided, and the two height gauges (10) are respectively arranged at two measurement target positions, and the horizontal positions at both ends of the level tube (9) correspond to the same scales on the two height gauges (10); The laser emitter (7) is arranged to be able to vertically illuminate a vertical co-plane where the two height gauges (10) are located, and the emitted laser light can coincide with the reference surface (6) or the reference line (5); The reference surface (6) or the reference line (5) is parallel to the target measurement surface.

2. The tool for measuring the relative height difference of the four corners of the support base plate according to claim 1, characterized in that: The reference surface (6) is a plane, and the reference line (5) is a cutting line.

3. The tool for measuring the relative height difference of the four corners of the support base plate according to claim 1, characterized in that: A mounting frame (8) is provided at the bottom of the laser emitter (7); The laser transmitter (7) can be universally adjusted relative to the mounting frame (8).

4. A method for measuring the relative height difference of the four corners of a support base plate, characterized in that: The method comprises the following steps: S1, turning on the laser transmitter (7) to emit a laser beam that coincides with the reference surface (6) or the reference line (5); S2, placing two height gauges (10) against two measurement target positions respectively, and calibrating the heights of the two height gauges (10) using a level tube (9) so that the scales on the two height gauges (10) are aligned; S3, read the laser beam readings on the two height scales (10) h m 、h n , then the height difference △h of the target measurement surface corresponding to the two measurement target positions mn =|h m -h n |; S4, continue to measure the height difference between any two other measurement target positions according to the steps of S1-S3.

5. The method for measuring the relative height difference of the four corners of the support base plate according to claim 4, characterized in that: Repeat steps S1-S4 by replacing different reference surfaces (6) or reference lines (5), measure the height difference between any two measurement target positions, and take the average value as the final height difference value.

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