阅读说明：本技术 非接触式水平梁挠曲测量仪 (Non-contact horizontal beam deflection measuring instrument ) 是由 白成军 李尧 李声能 张志强 于 2020-06-12 设计创作，主要内容包括：本发明公开了一种非接触式水平梁挠曲测量仪,普通铝合金、塑钢或不锈钢板材制作的长方体结构挠曲测量仪直杆上表面中间激光测距仪安置槽一侧雕刻与其长度相等且最小刻度单位为毫米的挠曲测量仪尺寸刻度、另一侧中间设置开口的挠曲测量仪水准管槽,挠曲测量仪直杆底部四个角挠曲测量仪底部通孔一端所在挠曲测量仪直杆底部板材内表面焊接安装与挠曲测量仪底部通孔同心的圆螺母,可移动激光测距仪垂直于挠曲测量仪直杆放置于激光测距仪安置槽内,水准管置于挠曲测量仪水准管槽内,调平螺栓穿过挠曲测量仪底部通孔与圆螺母采用螺纹连接。本发明可制作所测量梁挠曲线,具有结构简单、使用方便、专用性强、可重复换位使用的特点。(The invention discloses a non-contact horizontal beam deflection measuring instrument, which is characterized in that a deflection measuring instrument size scale which is equal to the length of a straight rod of a rectangular structure deflection measuring instrument and the minimum scale unit of which is millimeter is engraved on one side of a middle laser range finder placing groove on the upper surface of the straight rod of the deflection measuring instrument which is made of common aluminum alloy, plastic steel or stainless steel plates, an open deflection measuring instrument leveling pipe groove is arranged in the middle of the other side of the straight rod, a round nut which is concentric with a through hole at the bottom of the deflection measuring instrument is welded on the inner surface of the straight rod of the deflection measuring instrument at one end of the through hole at the bottom of four corners of the straight rod of the deflection measuring instrument, a movable laser range finder is perpendicular to the straight rod of the deflection measuring instrument and placed in the laser. The invention can be used for manufacturing the beam deflection line to be measured, and has the characteristics of simple structure, convenient use, strong specificity and repeated transposition use.)

1. A non-contact type horizontal beam deflection measuring instrument is characterized in that a cuboid-structure deflection measuring instrument straight rod (1) made of a common aluminum alloy, plastic steel or stainless steel plate with the thickness of 0.4-0.8 cm is 150-250 cm long, 8-15 cm wide and 4-12 cm high, a laser range finder placing groove (1-3) is arranged in the middle of the upper surface of the deflection measuring instrument straight rod (1), the laser range finder placing groove (1-3) is 140-240 cm long, 1-5 cm wide and 3-6 cm deep, deflection measuring instrument size scales (1-2) which are equal to the laser range finder placing groove (1-3) in length and have the smallest scale unit of millimeter are engraved on one side close to the laser range finder placing groove (1-3), an open deflection measuring instrument leveling tube groove (1-1) is arranged in the middle of the other side of the laser range finder placing groove (1-3), the length of the deflection leveling tube groove (1-1) is 3.0-10.0 cm long, The width of the bending measuring instrument is 1.1cm, the depth of the bending measuring instrument is 1.1cm, four corners at the bottom of a straight rod (1) of the bending measuring instrument are respectively provided with a through hole (1-4) at the bottom of the bending measuring instrument, a round nut (5) concentric with the through hole (1-4) at the bottom of the bending measuring instrument is welded and installed on the inner surface of a plate at the bottom of the straight rod (1) of the bending measuring instrument at one end of the through hole (1-4) at the bottom of the bending measuring instrument, the diameter of the through hole (1-4) at the bottom of the bending measuring instrument is 1.2cm, the inner diameter of the round nut (5) is 1.0cm, the outer diameter of the round nut is 2.0-3.0 cm, the height of the round nut is 1.0cm, the center of the through hole (1-4) at the bottom of the bending measuring instrument is 1.0-2.0 cm vertical to the outer surface of the plate of the bending measuring instrument, the vertical distance of the width is 1.0-2 cm The instrument (2) is perpendicular to a straight rod (1) of the deflection measuring instrument, the leveling tube (3) is installed in a leveling tube groove (1-1) of the deflection measuring instrument, the leveling tube (3) is connected with the leveling tube groove (1-1) of the deflection measuring instrument through an adhesive, the leveling bolt (4) penetrates through a through hole (1-4) in the bottom of the deflection measuring instrument and is connected with the round nut (5) through threads, and the length of the leveling bolt (4) is 3.0-10.0 cm, and the diameter of the leveling bolt is 1.0 cm.

Technical Field

The invention relates to a non-contact horizontal beam deflection measuring instrument.

Background

The beam is an extremely important component in various building structures, and deflection is inevitably generated due to long-term load of the beam, and particularly, a large number of wooden ancient buildings exist in China, and the main bearing beam of the wooden ancient buildings has the length of 4-6 meters and the width of 10-30 centimeters. The deflection represents the load state of the beam to a certain extent, the panic psychology of personnel in a house can be caused when the deflection of the beam is large, remedial measures must be taken when the deflection of the beam exceeds an allowable value required by a standard, and the deflection measuring instrument can be used for manufacturing a deflection line of the measured beam, so that the deflection and the change condition of the measured beam can be obtained, and early warning can be given out on the premise of excessive deflection. Most of the existing horizontal beam deflection measuring instruments are provided with sensors which are arranged on a measured beam, the deflection change of the measured beam is sensed through the sensors, so that a deflection line of the measured beam is manufactured, and besides the deflection line cannot be used in a transposition mode, most of the horizontal beam deflection measuring instruments cannot measure the accumulated deflection of the measured beam before the deflection measuring instruments are arranged. The measurement process of other special deflection measuring instruments is complex, some deflection measuring instruments also need to be provided with auxiliary measuring parts on the measured beam, and the measurement needs to be operated by professional technicians, so that the requirement on the operators is high.

Disclosure of Invention

The invention aims to solve the technical problem of providing a non-contact horizontal beam deflection measuring instrument which has a simple structure, is convenient to use, has strong specificity and can be repeatedly transposed for use.

The technical scheme of the non-contact horizontal beam deflection measuring instrument is realized as follows: a non-contact horizontal beam deflection measuring instrument is characterized in that a straight rod of a rectangular structure deflection measuring instrument made of a common aluminum alloy, plastic steel or stainless steel plate with the thickness of 0.4-0.8 cm is 150-250 cm long, 8-15 cm wide and 4-12 cm high, a laser range finder mounting groove is arranged in the middle of the upper surface of the straight rod of the deflection measuring instrument, the laser range finder mounting groove is 140-240 cm long, 1-5 cm wide and 3-6 cm deep, deflection measuring instrument size scales which are equal to the length of the laser range finder mounting groove and have the smallest scale unit of millimeter are engraved on one side close to the laser range finder mounting groove, an open deflection measuring instrument leveling tube groove is arranged in the middle of the other side of the laser range finder mounting groove, the deflection measuring instrument leveling tube groove is 3.0-10.0 cm long, 1.1cm wide and 1.1cm deep, a deflection measuring instrument bottom through hole is respectively arranged at the bottom of each of the deflection measuring instrument, a deflection measuring instrument bottom through hole is welded on the inner surface of the bottom plate, the diameter of a through hole at the bottom of the deflection measuring instrument is 1.2cm, the inner diameter of a round nut is 1.0cm, the outer diameter of the round nut is 2.0-3.0 cm, the height of the round nut is 1.0cm, the vertical distance between the center of the through hole at the bottom of the deflection measuring instrument and the outer surface of a straight rod bottom plate of the deflection measuring instrument is 1.0-2.0 cm, the vertical distance between the center of the through hole at the bottom of the deflection measuring instrument and the outer surface of the straight rod bottom plate of the deflection measuring instrument is 1.0-2.0 cm, the laser end of a laser range finder for transmitting laser of the laser range finder can be moved upwards, a cable joint of the laser range finder is arranged in a laser range finder arranging groove to enable the laser range finder to be perpendicular to the straight rod of the deflection measuring instrument, a leveling pipe is arranged in a leveling pipe groove of the.

The bending line of the measured beam is manufactured by the non-contact type horizontal beam bending measuring instrument, and the length range of the beam measured at one time is 5/3 times of the length of the non-contact type horizontal beam bending measuring instrument.

The two ends of the measured beam mentioned in the specification of the non-contact horizontal beam deflection measuring instrument refer to the midpoints of the two ends of the measured beam in the width direction, which can be measured when the non-contact horizontal beam deflection measuring instrument is placed in parallel with the wall surface where the two ends of the measured beam are located.

Within the range of the beam length measured at a time, the bending line of the measured beam is manufactured by the non-contact type horizontal beam bending measuring instrument, and the method sequentially comprises the following steps:

1. the non-contact horizontal beam deflection measuring instrument is arranged under the middle part of the measured beam along the length direction at the measuring positions outside the two ends of the measured beam, the non-contact horizontal beam deflection measuring instruments are respectively arranged at the two ends of the measured beam along the width direction at the measuring positions at the two ends of the measured beam and are parallel to the wall surfaces at the two ends of the measured beam, and the leveling bolts are respectively adjusted to center the bubble of the leveling pipe, so that the non-contact horizontal beam deflection measuring instrument is arranged in a horizontal state;

2. step 1, calibrating the plane position of the upper surface of the non-contact horizontal beam deflection measuring instrument of the invention by respectively adopting a horizontal pipe combined with a horizontal pull rope or a level gauge to measure the positions of the positions outside the two ends of the measured beam and the positions of the two ends of the measured beam as a reference plane, and enabling the positions of the positions outside the two ends of the measured beam in step 1 to coincide with the reference plane of the positions of the two ends of the measured beam;

3. selecting the middle point of a measured beam on a laser range finder mounting groove of the non-contact horizontal beam deflection measuring instrument, which is close to the groove edge, symmetrically and uniformly selecting 1-3 measuring positions of the measured beam on two sides of the middle point of the measured beam respectively, and recording the size scale reading of the deflection measuring instrument corresponding to the middle point of the measured beam and the measuring position of the measured beam;

4. the laser range finder is connected with a power supply, so that the laser range finder moves to the middle point of the measured beam and the measuring position of the measured beam determined in the step (3), and the vertical distances between the middle point of the measured beam and the measuring position of the measured beam and the bottom surface of the measured beam are measured respectively; respectively placing laser range finders under two ends of the measured beam, and respectively measuring the vertical distance between the reference surface and the bottom surfaces of the two ends of the measured beam;

5. taking any horizontal direction as an X axis and a vertical direction with the X axis as a Y axis to form a plane rectangular coordinate system, wherein X coordinates on two sides of the origin of the X axis of the plane rectangular coordinate system are symmetrical but have opposite values, the origin of the plane rectangular coordinate system is the middle point of the beam measured in the step 3, the reading difference value of the size scale of the deflection measuring instrument corresponding to the measured position of the beam measured in the step 3 and the middle point of the beam measured in the step 3 is the measured position value of the beam measured, the measured position values of two ends of the beam measured are respectively approximate to positive 1/2 measured beam length value and negative 1/2 measured beam length value is an X coordinate, the vertical distance between the middle point of the beam measured in the step 4 and the measured position of the beam measured, the measured positions of two ends of the beam measured and the bottom surface of the beam measured is a Y coordinate, drawing points by adopting the X coordinate and the Y coordinate in the plane rectangular coordinate system and, this curve is the line of deflection of the beam being measured.

Beyond the range of the beam length measured at a time, the beam deflection line measured by the non-contact horizontal beam deflection measuring instrument is manufactured, and the method sequentially comprises the following steps:

1. uniformly segmenting the measured beam into a beam middle section beam of the uniformly segmented measured beam including the middle point of the measured beam and two side section beams of the uniformly segmented measured beam on two sides of the beam middle section beam of the uniformly segmented measured beam according to the beam length range measured by the non-contact horizontal beam deflection measuring instrument at a time;

2. placing the non-contact horizontal beam deflection measuring instrument of the invention at the measuring positions outside the two ends of the measured beam along the length direction under the middle beam of the beam measured by the uniform subsection and the middle parts of the two side section beams of the beam measured by each uniform subsection in the step 1 in sequence; the non-contact horizontal beam deflection measuring instrument is respectively placed at the two ends of the measured beam along the width direction, the two ends of the measured beam are respectively parallel to the wall surfaces where the two ends of the measured beam are located, the leveling bolts are respectively adjusted to enable the air bubbles of the leveling tube to be centered, and the non-contact horizontal beam deflection measuring instrument is placed in a horizontal state;

3. step 2, calibrating the plane position of the upper surface of the non-contact horizontal beam deflection measuring instrument of the invention by respectively adopting a horizontal pipe combined with a horizontal pull rope or a level gauge to measure the positions of the positions outside the two ends of the measured beam and the positions of the two ends of the measured beam as a reference plane, and enabling the positions of the positions outside the two ends of the measured beam to coincide with the reference plane of the positions of the two ends of the measured beam in the step 2;

4. for the middle beam of the beam measured by the uniform subsection, selecting the middle point of the beam to be measured along the edge adjacent to the groove on the laser range finder mounting groove of the non-contact horizontal beam deflection measuring instrument, symmetrically and uniformly selecting 1-3 middle beam measuring positions of the beam to be measured by the uniform subsection on two sides of the middle point of the beam to be measured, uniformly selecting 1-6 beam measuring positions on two sides of the beam to be measured by the uniform subsection on the laser range finder mounting groove of the non-contact horizontal beam deflection measuring instrument, and recording the size scale readings of the deflection measuring instrument corresponding to the middle point of the beam to be measured, the middle beam measuring position of the beam to be measured by the uniform subsection and the beam measuring positions on two sides of the beam to be measured by the uniform subsection; measuring the linear distance value between the beam measuring position of the two side sections of the beam measured by each uniform section, which is closest to the middle point of the beam measured by each uniform section, and the middle point of the beam measured by each uniform section, in the beam measuring positions of the two side sections of the beam measured by each uniform section, on the same side, and the distance between the beam measuring position of the two side sections of the beam measured by each uniform section, which is closest to the middle point of the beam measured by each uniform section, on the same side, so as to obtain the linear distance value between the beam measuring position of the two side sections of the beam measured by each uniform section and the middle point of;

5. the laser range finder is connected with a power supply, and the laser range finder is moved to the middle point of the beam to be measured, the middle beam measuring position of the beam to be measured in the uniform subsection and the beam measuring positions at the two side sections of the beam to be measured in each uniform subsection determined in the step (4) to respectively measure the vertical distance between the beam to be measured and the bottom surface of the beam to be measured; respectively placing laser range finders under two ends of the measured beam, and respectively measuring the vertical distance between the reference surface and the bottom surfaces of the two ends of the measured beam;

6. taking any horizontal direction as an X axis and a vertical direction with the X axis as a Y axis to form a plane rectangular coordinate system, wherein X coordinates on two sides of an original point of the X axis of the plane rectangular coordinate system are symmetrical but have opposite numerical values, the original point of the plane rectangular coordinate system is the middle point of the beam measured in the step 4, the difference value of the size scale reading of a deflection measuring instrument corresponding to the measured position of the middle section of the beam measured in the step 4 and the middle point of the beam measured in the step 4 in uniform segmentation is the measured position value of the middle section of the beam measured in the uniform segmentation, the positive and negative orientation of the linear distance values of the measured positions of the two side sections of the beam measured in each uniform segmentation and the middle point of the beam measured in the step 4 is the same as the linear distance value of the measured position value of the two side sections of the beam measured in each uniform segmentation and the middle point of the beam measured in the step 4 in alignment is the linear distance value of the, The measured beam length values of the two ends of the measured beam are respectively approximate to positive 1/2 measured beam length values and negative 1/2 measured beam length values which are X coordinates, the beam middle point measured in the step 5, the beam middle section measuring position measured in the uniform subsection, the beam measuring positions of the two side sections of the measured beam in each uniform subsection, and the vertical distance between the measured beam two ends measuring position and the measured beam bottom surface are Y coordinates, points are drawn by adopting the X coordinates and the Y coordinates in the plane rectangular coordinate system, the drawn points are connected by a smooth curve, and the curve is the bending line of the measured beam.

The distance from any point on the bending line of the measured beam manufactured by the non-contact horizontal beam deflection measuring instrument to the two ends of the measured beam which are connected into a straight line is the point deflection value.

The non-contact horizontal beam deflection measuring instrument has the characteristics of simple structure, convenience in use, strong specificity and capability of being repeatedly transposed for use.

Drawings

The invention is further described below with reference to the accompanying drawings and examples.

FIG. 1 is a schematic structural view of a non-contact horizontal beam deflection gauge of the present invention;

FIG. 2 is a deflection line of a 2.4m long (15.0cm wide) frame beam of the non-contact horizontal beam deflection gauge of the present invention in example 1;

FIG. 3 is a deflection line of a 5.3m long (30.0cm wide) frame beam of the non-contact horizontal beam deflection gauge of the present invention in example 1;

FIG. 4 is a deflection line of a 3.0m long (15.0cm wide) frame beam of the non-contact horizontal beam deflection gauge of the present invention in example 2;

FIG. 5 is a deflection line of a 5.0m long (24.0cm wide) frame beam of the non-contact horizontal beam deflection gauge of the present invention in example 2;

FIG. 6 is a deflection line of a 3.6m long (18.0cm wide) simply supported wood beam of the non-contact horizontal beam deflection gauge of the present invention in example 3;

FIG. 7 is a deflection line of a simple wood beam of example 3 with a length of 6.0 (30.0cm width) of the non-contact horizontal beam deflection gauge of the present invention.

In the figure: flex measuring instrument straight rod 1 flexex measuring instrument leveling tube groove 1-1 flexex measuring instrument dimension scale 1-2 laser range finder placement groove 1-3 flexex measuring instrument bottom through hole 1-4 laser range finder 2 laser range finder cable connector 2-1 laser range finder emission laser end 2-2 leveling tube 3 leveling bolt 4 round nut 5

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