阅读说明：本技术 一种大板梁挠度测量装置及挠度测量方法 (Large plate girder deflection measuring device and deflection measuring method ) 是由 周沁乔 钱国忠 周俊 武闯 于 2019-10-17 设计创作，主要内容包括：本发明公开了一种大板梁挠度测量装置及挠度测量方法,涉及大板梁挠度测量技术领域,包括磁性底座,所述磁性底座的上端中部设置有可拆卸立柱,所述可拆卸立柱的上端外表面设置有管端封头盖,所述可拆卸立柱的一侧设置有可拆卸横柱。本发明能够便捷的固定在大板梁上,且通过标记色环与微型直线导轨的滑块连接,依靠地心引力滑块自由下滑,最终搭接在大板的上表面,可通过望眼镜观察标记色环和激光水平线在标准钢尺上的位置,实现对大板梁的相对高度进行测量,通过测量数据,算出大板梁挠度,且设立五个或五个以上测量点,平均分布于大板梁上,进行多次测量,以证测试合格,本发明简便、精确的检测出大板梁挠度,具备一定的使用前景。(The invention discloses a large plate girder deflection measuring device and a deflection measuring method, and relates to the technical field of large plate girder deflection measurement. The invention can be conveniently fixed on the large plate girder, is connected with the slide block of the miniature linear guide rail through the marking color ring, freely slides downwards by depending on the gravity, and is finally lapped on the upper surface of the large plate, the positions of the marking color ring and the laser horizontal line on the standard steel ruler can be observed through a pair of observation glasses, so that the measurement of the relative height of the large plate girder is realized, the deflection of the large plate girder is calculated through measurement data, five or more than five measurement points are set, and are evenly distributed on the large plate girder for multiple measurements to prove that the test is qualified.)

1. The utility model provides a big plate girder amount of deflection measuring device, includes magnetism base (1), its characterized in that: the magnetic base is characterized in that a detachable upright post (2) is arranged in the middle of the upper end of the magnetic base (1), a tube end sealing cover (3) is arranged on the outer surface of the upper end of the detachable upright post (2), a detachable cross post (4) is arranged on one side of the detachable upright post (2), an upright post fixing clamp (5) is arranged between the detachable upright post (2) and the detachable cross post (4), a quick screwing handle (6) is arranged on one side of the detachable cross post (4), a rectangular sliding rod (16) is arranged at one end of the detachable cross post (4), a miniature linear guide rail (11) is arranged on the outer surface of the rectangular sliding rod (16), a marking color ring (8) is arranged on one side of the rectangular sliding rod (16), a joint bearing (13) is arranged at one end of the rectangular sliding rod (16), and a stainless steel shaft (9, the upper end surface of stainless steel axle (9) is provided with ruler holding table (12), the lower extreme surface of stainless steel axle (9) is provided with standard plummet (10), the upper end surface of ruler holding table (12) is provided with ruler cassette (14), the middle part of ruler holding table (12) is provided with symmetry spirit level (15), the middle part of ruler cassette (14) is provided with standard steel ruler (7).

2. The large plate girder deflection measuring device according to claim 1, characterized in that: one side of the marking color ring (8) is provided with a fixed rod, the outer surface of the rectangular sliding rod (16) is connected with the outer surface of the fixed rod in a sliding mode through a miniature linear guide rail (11), and the outer surface of the lower end of the ruler placing table (12) is fixedly connected with the outer surface of the upper end of the standard plumb bob (10) through a stainless steel shaft (9).

3. The large plate girder deflection measuring device according to claim 1, characterized in that: magnetism base (1) adopts the neodymium iron boron strong magnet, can dismantle stand (2) and the column length of dismantling spreader (4) and be 120mm, external diameter 10mm, the material is nonrust steel pipe.

4. The large plate girder deflection measuring device according to claim 1, characterized in that: the length of the guide rail of the miniature linear guide rail (11) is 105mm, the distance between the ends is 7.5mm, and the maximum circumferential inclination angle allowed by the joint bearing (13) is about 30 degrees.

5. The method for measuring the deflection of the large plate girder of the device for measuring the deflection of the large plate girder of claim 1 is characterized by comprising the following steps of:

(1) height measurement: the leveling measurement is carried out by the cooperation of laser emitted by a laser graticule and a large plate girder deflection measuring device, and the relative height of each measuring point of the large plate girder can be measured;

(2) measuring length: the existing laser range finder can measure the deflection by the instrument, and meanwhile, the laser range finder can emit laser to be matched with the large plate beam deflection measuring device for length measurement, so that the length of the large plate beam can be measured;

(3) recording through a telescope;

(4) and (3) calculating the deflection: the product is unqualified when the deflection exceeds 1/850 and is qualified when the deflection is less than 1/850.

6. The large plate beam deflection measuring method of the large plate beam deflection measuring device according to claim 5, which is characterized in that: the step (1) comprises the following steps:

(a) taking the device to a large plate girder to be measured, and fixedly installing the device on the large plate girder through a magnetic base (1);

(b) mounting a detachable upright post (2), a detachable cross post (4), an upright post fixing clamp (5), a quick screwing handle (6), a standard steel ruler (7), a marking color ring (8), a stainless steel shaft (9), a standard plumb bob (10), a ruler placing table (12), a joint bearing (13) and a rectangular slide bar (16) at corresponding positions on the device, and finishing the assembly of the device;

(c) the detachable upright post (2) and the detachable cross post (4) are fixed through an upright post fixing clamp (5), the included angle of 90 degrees is kept, and the surface distance of the detachable upright post (2) can be adjusted by adjusting the upright post fixing clamp (5) through quickly screwing a handle (6);

(d) through the connection of a stainless steel shaft (9) and a joint bearing (13), through the dead weight of a standard plumb bob (10), a ruler placing table (12) is horizontal to the ground plane;

(e) the marking color ring (8) is connected with a slide block of a marking color ring (11) of the miniature linear guide rail, and the slide block freely slides downwards depending on the gravity and is finally lapped on the upper surface of the large plate;

(f) a laser graticule instrument is erected at a proper position, the level of the laser graticule instrument is adjusted, a horizontal laser line is emitted, it is guaranteed that a ruler of the large plate girder deflection measuring device can be centered by the horizontal laser line on each measuring point, the positions of a marking color ring (8) and the horizontal laser line on a standard steel ruler (7) can be observed through sighting glasses at the moment, and the measurement of the relative height of each measuring point of the large plate girder is achieved.

7. The large plate beam deflection measuring method of the large plate beam deflection measuring device according to claim 5 or 6, characterized in that: in the step (d), the length ratio of the upper segment to the lower segment of the stainless steel shaft (9) is 1: 3, the total length is 40 mm.

8. The large plate beam deflection measuring method of the large plate beam deflection measuring device according to claim 5 or 6, characterized in that: when the deflection of the large plate girder is measured, five or more than five measuring points are required to be set and are respectively positioned at the initial point, the middle point and the end point of the deflection of the large plate girder, and the measurement is carried out for a plurality of times to ensure the qualification.

Technical Field

The invention relates to the technical field of large plate girder deflection measurement, in particular to a large plate girder deflection measurement device and a deflection measurement method.

Background

The deflection is the linear displacement of the axis of the rod piece in the direction vertical to the axis or the linear displacement of the middle surface of the plate shell in the direction vertical to the middle surface when the stress or the non-uniform temperature changes, and the deflection of the large plate beam refers to the maximum deformation of the large plate beam under the load action, and generally refers to the vertical direction, namely the vertical deformation of the large plate beam.

The existing deflection measuring device is simple in structural design and cannot be conveniently and fast fixed on a large plate girder, a measuring and transmitting structure is often shielded by a side structure of the large plate girder or an obstacle near the large plate girder, and measurement is troublesome, so that the deflection measuring device and the deflection measuring method for the large plate girder are required to be designed aiming at the problems.

Disclosure of Invention

The invention provides a large plate girder deflection measuring device and a deflection measuring method, which can solve the problems that in the background technology, a bulge cannot be conveniently fixed on a large plate girder and is often shielded by a mechanism at the side of the large plate girder or a nearby obstacle.

In order to achieve the purpose, the invention provides the following technical scheme: the invention relates to a large plate girder deflection measuring device and a deflection measuring method, which comprises a magnetic base, wherein a detachable upright post is arranged in the middle of the upper end of the magnetic base, a pipe end sealing cover is arranged on the outer surface of the upper end of the detachable upright post, a detachable cross post is arranged on one side of the detachable upright post, an upright post fixing clamp is arranged between the detachable upright post and the detachable cross post, a quick-screwing handle is arranged on one side of the detachable cross post, a rectangular sliding rod is arranged at one end of the detachable cross post, a miniature linear guide rail is arranged on the outer surface of the rectangular sliding rod, a marking color ring is arranged on one side of the rectangular sliding rod, a joint bearing is arranged at one end of the rectangular sliding rod, a stainless steel shaft is arranged in the middle of the joint bearing, a straight ruler placing table is arranged on the outer surface of the, the outer surface of the upper end of the ruler placing table is provided with a ruler clamping seat, the middle of the ruler placing table is provided with a symmetrical level meter, and the middle of the ruler clamping seat is provided with a standard steel ruler.

Preferably, one side of the marking color ring is provided with a fixed rod, the outer surface of the rectangular slide rod is connected with the outer surface of the fixed rod in a sliding mode through a miniature linear guide rail, and the outer surface of the lower end of the ruler placing table is fixedly connected with the outer surface of the upper end of the standard plumb bob through a stainless steel shaft.

Preferably, the magnetism base adopts the neodymium iron boron strong magnet, can dismantle the stand and be 120mm with the column length that can dismantle the spreader, external diameter 10mm, the material is nonrust steel pipe.

Preferably, the length of the guide rail of the miniature linear guide rail is 105mm, the distance between the ends is 7.5mm, and the maximum allowable circumferential inclination angle of the joint bearing is about 30 degrees.

The invention relates to a large plate girder deflection measuring method of a large plate girder deflection measuring device, which comprises the following steps:

(1) height measurement: the leveling measurement is carried out by the cooperation of laser emitted by a laser graticule instrument and a large plate girder deflection measuring device, so that the height of the large plate girder and the height of the device at five measuring points can be measured;

(2) measuring length: the existing infrared distance meter can measure the deflection by the instrument, and meanwhile, the laser distance meter can emit laser to be matched with the large plate beam deflection measuring device for length measurement, so that the length of the large plate beam can be measured;

(3) recording through a telescope;

(4) and (3) calculating the deflection: the product is unqualified when the deflection exceeds 1/850 and is qualified when the deflection is less than 1/850.

Further, the step (3) comprises the following steps:

(a) taking the device to a large plate girder to be measured, and fixedly installing the device on the large plate girder through a magnetic base (1);

(b) mounting a detachable upright post, a detachable cross post, an upright post fixing clamp, a quick screwing handle, a standard steel ruler, a marking color ring, a stainless steel shaft, a standard plumb bob, a ruler placing table, a joint bearing and a rectangular slide bar on corresponding parts of the device, and finishing the assembly of the device;

(c) the detachable upright post and the detachable cross post are fixed through an upright post fixing clamp, the included angle of 90 degrees is kept, and the off-plane distance of the detachable upright post can be adjusted through adjusting the upright post fixing clamp by quickly twisting a handle;

(d) through the connection of the stainless steel shaft and the joint bearing, the straight ruler placing table is made to be horizontal to the ground plane through the dead weight of the standard plumb bob;

(e) the marking color ring is connected with a slide block of the marking color ring of the miniature linear guide rail, and the slide block freely slides downwards by virtue of the gravity and is finally lapped on the upper surface of the large plate;

(f) a laser graticule instrument is erected at a proper position, the level of the laser graticule instrument is adjusted, a horizontal laser line is emitted, it is guaranteed that a ruler of the large plate girder deflection measuring device can be centered by the horizontal laser line on each measuring point, the positions of a marking color ring (8) and the horizontal laser line on a standard steel ruler (7) can be observed through sighting glasses at the moment, and the measurement of the relative height of each measuring point of the large plate girder is achieved.

Further, in step (d), the ratio of the length of the upper segment to the length of the lower segment of the stainless steel shaft is 1: 3, the total length is 40 mm.

Furthermore, when the deflection of the large plate girder is measured, five or more than five measuring points are required to be set and are respectively positioned at the starting point, the middle point and the end point of the deflection of the large plate girder, and the measurement is carried out for multiple times so as to ensure that the test is qualified.

Has the advantages that: the invention can be conveniently fixed on the large plate girder, the position of the marked color ring on the standard steel ruler can be observed through a pair of observation glasses, the deflection of the large plate girder can be measured, five or more than five measuring points are set and are respectively positioned at the initial point, the middle point and the end point of the deflection of the large plate girder, and the measurement is carried out for a plurality of times, so that the test is qualified.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

FIG. 2 is a schematic view of a partial structure of the present invention;

fig. 3 is a schematic diagram of a standard plumb 10 according to the present invention;

FIG. 4 is a schematic diagram of a magnetic base 1 according to the present invention;

fig. 5 is a schematic structural diagram of the straight edge placing table 12 in the invention;

fig. 6 is a schematic view of an allowable inclination angle of the spherical plain bearing 13 according to the present invention.

In the figure: 1. a magnetic base; 2. the upright posts can be disassembled; 3. a tube end closure; 4. the transverse column can be disassembled; 5. a column fixing clamp; 6. quickly screwing a handle; 7. a standard steel rule; 8. marking a color ring; 9. a stainless steel shaft; 10. a standard plumb bob; 11. a micro linear guide rail; 12. a ruler placement table; 13. a knuckle bearing; 14. a ruler clamping seat; 15. a symmetrical level; 16. a rectangular slide bar.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in figures 1-6, the invention relates to a large plate girder deflection measuring device and a deflection measuring method, comprising a magnetic base 1, a detachable upright post 2 is arranged in the middle of the upper end of the magnetic base 1, a pipe end sealing cover 3 is arranged on the outer surface of the upper end of the detachable upright post 2, a detachable cross post 4 is arranged on one side of the detachable upright post 2, an upright post fixing clamp 5 is arranged between the detachable upright post 2 and the detachable cross post 4, a quick-screwing handle 6 is arranged on one side of the detachable cross post 4, a rectangular slide bar 16 is arranged at one end of the detachable cross post 4, a micro linear guide rail 11 is arranged on the outer surface of the rectangular slide bar 16, a marking color ring 8 is arranged on one side of the rectangular slide bar 16, a joint bearing 13 is arranged at one end of the rectangular slide bar 16, a stainless steel shaft 9 is arranged in the middle of, the outer surface of the lower end of the stainless steel shaft 9 is provided with a standard plumb bob 10, the outer surface of the upper end of the straight ruler holding table 12 is provided with a straight ruler clamping seat 14, the middle of the straight ruler holding table 12 is provided with a symmetrical level meter 15, and the middle of the straight ruler clamping seat 14 is provided with a standard steel ruler 7.

The related structures of the marking color ring 8 and the rectangular slide bar 16 are shown, in the embodiment, a fixed rod is arranged on one side of the marking color ring 8, the outer surface of the rectangular slide bar 16 is connected with the outer surface of the fixed rod in a sliding manner through a miniature linear guide rail 11, and the outer surface of the lower end of a ruler placing table 12 is fixedly connected with the outer surface of the upper end of a standard plumb bob 10 through a stainless steel shaft 9.

The size and the structure of some components have been expressed, and in this embodiment, magnetism base 1 adopts the neodymium iron boron strong magnet, can dismantle stand 2 and can dismantle the post length of horizontal post 4 and be 120mm, and external diameter 10mm, the material is stainless steel pipe.

Expressing the size requirement of the related structure, in the embodiment, the guide rail length of the miniature linear guide rail 11 is 105mm, the end distance is 7.5mm, and the allowable maximum circumferential inclination angle of the joint bearing 13 is about 30 degrees.

The invention relates to a large plate girder deflection measuring method of a large plate girder deflection measuring device, which comprises the following steps:

(1) height measurement: the leveling measurement is carried out by the cooperation of laser emitted by a laser graticule instrument and a large plate girder deflection measuring device, so that the height of the large plate girder and the height of the device at five measuring points can be measured;

(2) measuring length: the existing infrared distance meter can measure the deflection by the instrument, and meanwhile, the laser distance meter can emit laser to be matched with the large plate beam deflection measuring device for length measurement, so that the length of the large plate beam can be measured;

(3) recording through a telescope;

(4) and (3) calculating the deflection: the product is unqualified when the deflection exceeds 1/850 and is qualified when the deflection is less than 1/850.

Further, the step (3) comprises the following steps:

(a) taking the device to a large plate girder to be measured, and fixedly installing the device on the large plate girder through a magnetic base 1;

(b) mounting a detachable upright post 2, a detachable cross post 4, an upright post fixing clamp 5, a quick screwing handle 6, a standard steel ruler 7, a marking color ring 8, a stainless steel shaft 9, a standard plumb bob 10, a ruler placing table 12, a joint bearing 13 and a rectangular slide bar 16 at corresponding positions on the device, and finishing assembly of the device;

(c) the detachable upright post 2 and the detachable cross post 4 are fixed through an upright post fixing clamp 5, the included angle of 90 degrees is kept, and the surface separation distance of the detachable upright post 2 can be adjusted by adjusting the upright post fixing clamp 5 through a quick-screwing handle 6;

(d) through the connection of the stainless steel shaft 9 and the joint bearing 13 (the length ratio of the upper segment to the lower segment of the stainless steel shaft is 1: 3, and the total length is 40 mm), the straight ruler placing table 12 is made to be horizontal to the ground plane through the dead weight of the standard plumb bob 10;

(e) the marking color ring 8 is connected with a slide block of a marking color ring 11 of the miniature linear guide rail, and the slide block freely slides downwards depending on the gravity and is finally lapped on the upper surface of the large plate;

(f) a proper position is selected to erect the laser graticule instrument, the level of the laser graticule instrument is adjusted, a horizontal laser line is emitted, the fact that the ruler of the large plate girder deflection measuring device can be centered by the horizontal laser line on each measuring point is guaranteed, the positions of the marking color ring 8 and the horizontal laser line on the standard steel ruler 7 can be observed through the sighting glasses, and the measurement of the relative height of each measuring point of the large plate girder is achieved.

When the deflection of the large plate girder is measured, five or more than five measuring points are required to be set and are respectively positioned at the initial point, the middle point and the end point of the deflection of the large plate girder, and the measurement is carried out for a plurality of times so as to ensure that the test is qualified.

The working principle and the using process of the invention are as follows: the device mainly comprises a magnetic base 1, a detachable upright post 2, a pipe end sealing head cover 3, a detachable cross post 4, an upright post fixing clamp 5, a quick screwing handle 6, a standard steel ruler 7, a marking color ring 8, a stainless steel shaft 9, a standard plumb bob 10, a miniature linear guide rail 11, a straight ruler placing table 12, a joint bearing 13, a straight ruler clamping seat 14, a symmetrical level meter 15 and a rectangular slide bar 16, wherein the device is taken to a large plate girder to be measured and is fixedly arranged on the large plate girder through the magnetic base 1; mounting a detachable upright post 2, a detachable cross post 4, an upright post fixing clamp 5, a quick screwing handle 6, a standard steel ruler 7, a marking color ring 8, a stainless steel shaft 9, a standard plumb bob 10, a ruler placing table 12, a joint bearing 13 and a rectangular slide bar 16 at corresponding positions on the device, and finishing assembly of the device; the detachable upright post 2 and the detachable cross post 4 are fixed through an upright post fixing clamp 5, the included angle of 90 degrees is kept, and the surface separation distance of the detachable upright post 2 can be adjusted by adjusting the upright post fixing clamp 5 through a quick-screwing handle 6; the length ratio of the upper segment to the lower segment of the stainless steel shaft is 1 through the connection of the stainless steel shaft 9 and the knuckle bearing 13: 3, the total length is 40mm, and the straight ruler placing table 12 is made to be horizontal to the ground plane through the dead weight of the standard plumb bob 10; the marking color ring 8 is connected with a slide block of a marking color ring 11 of the miniature linear guide rail, and the slide block freely slides downwards depending on the gravity and is finally lapped on the upper surface of the large plate; at the moment, the position of the marking color ring 8 on the standard steel ruler 7 can be observed through a pair of observation glasses, so that the deflection of the large plate girder can be measured; when the deflection of the large plate girder is measured, five or more than five measuring points are set and are respectively positioned at the initial point, the middle point and the end point of the deflection of the large plate girder, and the measurement is carried out for a plurality of times; the existing laser graticule can measure deflection by an instrument, and simultaneously, the leveling measurement can be carried out by the coordination of laser emitted by the laser graticule and a device, so that the height of the large plate girder and the height of the device at five measuring points can be measured; can be when the instrumental survey amount of deflection through current infrared distance meter, accessible laser distance meter transmission laser carries out length measurement with the device cooperation, can measure the length of big board roof beam itself and the distance between five measuring points to when instruments such as using laser striping machine carry out the height measurement, standard steel rule 7 can also act as the effect of levelling rod, has certain use prospect.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.