CN207600442U - A kind of backsight levelling rod fixing device of bridge static loading test deflection metrology - Google Patents

Abstract

The utility model discloses a backsight leveling rod fixing device for bridge static load test deflection measurement, which is characterized in that it comprises: a base, which is an equilateral triangle, and three corners of the base are respectively provided with horizontal adjustment mechanisms ; The leveling rod clamping device is rotatably connected to the base. The utility model adopts a triangular base design, which effectively reduces the center of the entire device to a minimum, and at the same time, because it is a steel structure, its weight is relatively large and it can also have high stability; compared with traditional manual running back and forth And binding fixed method to measure the backsight elevation, which reduces the labor intensity of the staff, improves the work efficiency, reduces the disturbance of external factors, and always maintains the verticality of the leveling rod, which improves the effectiveness and accuracy of the test.

Description

A backsight leveling rod fixing device for bridge static load test deflection measurement

technical field

The utility model belongs to the field of leveling rod fixing devices, in particular to the field of backsight leveling rod fixing devices for bridge static load test deflection measurement.

Background technique

With the continuous development of our country's transportation industry, our country is at the peak of expressway construction, more and more bridges need to be built in the project construction, the scale level is getting higher and higher, and the corresponding inspections are more stringent to ensure that the project quality.

The static load test of the bridge is to record the structural response of the bridge under the static load through the loading test, and provide scientific basis and support for the technical status and bearing capacity evaluation of the bridge structure and future maintenance, repair and reinforcement.

So far, deflection measurement in bridge static load test throws problems:

First, in the current bridge static load test, most of them need to manually run back and forth to measure the elevation of the backsight measuring point, which not only increases the work intensity of the surveyors, but may also increase the inaccuracy of the measurement.

The second is to fix the leveling rod at the backsight measuring point with adhesive tape or a tripod. These methods of operation are likely to cause disturbance of the leveling rod under the action of wind or man-made, and there is no stable fixing device, resulting in deviation of the measurement data.

Utility model content

An object of the present invention is to solve at least the above-mentioned problems and/or disadvantages and to provide at least the advantages described hereinafter.

In order to achieve these purposes and other advantages according to the utility model, a kind of backsight leveling rod fixing device for bridge static load test deflection measurement is provided comprising:

The base is an equilateral triangle, and the three corners of the base are respectively provided with horizontal adjustment mechanisms;

The leveling rod clamping device is rotatably connected to the base.

Preferably, wherein, the horizontal adjustment mechanism includes: a first threaded hole arranged on each corner, a first screw rod matched with it passes through the first threaded hole, and the upper end of the first screw rod is provided with The knob rod, the lower end of the first screw rod is a supporting foot.

Preferably, wherein, the leveling rod clamping device includes: a ruler seat rotatably connected to the base, on which a swingable ruler groove is provided, and a first angle steel and a second angle steel are arranged opposite to each other on both sides of the ruler groove , the first angle steel is provided with a first clamping hole, which passes through a first clamping screw matched with it; the second angle steel is provided with a second clamping hole, in which There is a second clamping screw matched with it, the outer ends of the first clamping screw and the second clamping screw are respectively provided with knobs, and the inner ends are respectively provided with rubber gaskets.

Preferably, wherein, the rotatable connection between the ruler base and the base is as follows: a circular groove is provided in the center of the base, and a rotating bearing is installed in the center of the base, and a rod is provided at the lower end of the ruler base, and the rod It is fixedly inserted into the rotating bearing; the lower part of the ruler base is fixedly connected with a gear with the same radius, and a fine-tuning knob is arranged next to the ruler base, and the lower end of the fine-tuning knob is fixedly connected with the rotating gear in the base. The rotary gear is meshed with the gear at the bottom of the chi base.

Preferably, the swingable connection between the ruler groove and the ruler base is as follows: a semi-circular gear is provided at the bottom of the ruler groove, a mounting groove is opened in the middle of the ruler holder, and the ruler groove is passed through rods on both sides of the bottom. The part is inserted into the hole on the wall of the mounting groove to realize the swing, and the side of the ruler base is provided with a swing fine-tuning knob, which is fixedly connected with the swing gear in the ruler base, and the swing gear is engaged with the semicircular gear of the ruler groove.

Preferably, a rubber block is fixed under the support foot.

Preferably, wherein, the base is a steel base.

The utility model at least includes the following beneficial effects: the leveling gauge fixing device adopts a large-quality base design, which effectively minimizes the center of the entire device and occupies a small area, so that it may be less affected by the outside world during use. At the same time, because it is a steel structure, its weight is relatively high and it can also have high stability; compared with the traditional manual back and forth running and binding fixing methods to measure the backsight elevation, the utility model reduces the labor intensity of the staff. The work efficiency is improved, the vertical stability of the leveling rod is effectively improved, the disturbance of external factors is reduced, and the leveling rod is always kept in an absolutely vertical state, which improves the validity and accuracy of the test.

Other advantages, objectives and features of the utility model will partly be embodied through the following description, and partly will be understood by those skilled in the art through the research and practice of the utility model.

Description of drawings:

Fig. 1 is the top view of the fixing device provided by the utility model;

Fig. 2 is the first front view of the fixing device provided by the utility model;

Fig. 3 is the second front view of the fixing device provided by the utility model;

Fig. 4 is a schematic diagram of the connection structure between the ruler base and the base provided by the utility model;

Fig. 5 is a connection structure diagram of the ruler groove and the ruler holder provided by the utility model.

Detailed ways:

The utility model will be described in further detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it by referring to the description.

It should be understood that terms such as "having", "comprising" and "including" as used herein do not entail the presence or addition of one or more other elements or combinations thereof.

As shown in Figure 1-5, the utility model provides a rear sight leveling rod fixing device for measuring the deflection of a bridge static load test, which includes:

A base 1, which is an equilateral triangle, and three corners of the base 1 are respectively provided with horizontal adjustment mechanisms;

The leveling rod clamping device 2 is rotatably connected to the base 1 .

Instructions for use: When performing bridge static load deflection measurement or other measurement tasks that require temporary fixing of the backsight leveling rod, place the backsight leveling rod fixing device on the selected position, and then fix the leveling rod on the leveling rod holder On device 2, adjust the horizontal adjustment mechanism on the three corners of the base so that the level bubble is located in the center of the level to ensure that the level is in an absolutely vertical state. After the measurement test is completed, loosen and place it on the level clamping device 2 on the leveling rod, and then take away the leveling rod fixing device. This leveling rod fixing device reduces the labor intensity of the staff, improves work efficiency, effectively improves the vertical stability of the leveling rod, and reduces external factors disturbance, and always keep the leveling rod in an absolutely vertical state, which improves the effectiveness and accuracy of the test.

As in the above technical solution, the horizontal adjustment mechanism includes: a first threaded hole 101 arranged on each corner, and a first threaded rod 102 matching it passes through the first threaded hole 101, and the first threaded rod 102 The upper end of 101 is provided with a knob rod 103, and the lower end of the first screw rod is a leg. When adjusting the level, the base 1 is adjusted to the level through the knob rod 103 on the first screw rod 102 of the knob. This manner is only a preferred example, but not limited thereto, and can be properly replaced and/or modified as required.

As in the above technical solution, the leveling rod clamping device 2 includes: a ruler base 201 rotatably connected to the base 1, on which a swingable ruler groove 202 is provided, and the two sides of the ruler groove 202 are oppositely provided with first Angle steel 203 and the second angle steel 204, described first angle steel 203 is provided with and is provided with first clamping hole, and the first clamping screw rod 205 that matches it passes through in it; Described second angle steel 204 is provided with A second clamping hole is provided, and a second clamping screw 206 matched therethrough passes through it, and the outer ends of the first clamping screw 205 and the second clamping screw 206 are respectively provided with a knob 207 and an inner end Rubber gaskets 208 are respectively provided. When in use, the first clamping screw 205 and the second clamping screw 206 are loosened by the knob 207, and then the leveling rod is vertically inserted therein, and then the first clamping screw 207 is clamped by the knob 207. The screw rod 205 and the second clamping screw rod 206 clamp the rubber washer 208 relative to each other, and the rubber washer 208 is fixed against the level gauge. This manner is only a preferred example, but not limited thereto, and can be properly replaced and/or modified as required.

As in the above technical solution, the rotatable connection between the ruler base 201 and the base 1 is as follows: a circular groove is provided in the center of the base 1, a rotating bearing 105 is installed in the center, and a rod is provided at the lower end of the ruler base 201 211, the rod 211 is fixedly inserted into the rotary bearing 105; the lower part of the ruler base 201 is fixedly connected with a gear 212 with the same radius, and a fine-tuning knob 213 is arranged next to the ruler base 201, and the lower end of the fine-tuning knob 213 It is fixedly connected with the rotary gear 214 located in the base 1, and the rotary gear 214 is meshed with the gear 212 at the bottom of the ruler base 201. This structure is mainly for fine-tuning. When the horizontal adjustment mechanism cannot accurately adjust the level gauge, it can Use this fine-tuning knob 213 to fine-tune it horizontally. This manner is only a preferred example, but not limited thereto, and can be properly replaced and/or modified as required.

As in the above technical solution, the swingable connection between the ruler groove 220 and the ruler base 201 is as follows: the bottom of the ruler groove 220 is provided with a semicircular gear 221, the middle of the ruler base 201 is provided with a mounting groove, and the ruler groove 220 The rods on both sides of the bottom are inserted into the holes on the wall of the installation groove to realize the swing. The side of the ruler base 201 is provided with a swing fine-tuning knob 221, which is fixedly connected with the swing gear 222 in the ruler base 201. The swing gear 222 is meshed with the semicircular gear 221 of the ruler groove 220. This structure is mainly for fine-tuning. When the horizontal adjustment mechanism cannot accurately adjust the level gauge, it can be fine-tuned by the swing fine-tuning knob 221. This manner is only a preferred example, but not limited thereto, and can be properly replaced and/or modified as required.

As in the above technical solution, rubber blocks are fixed under the feet to reduce wear and increase stability. This manner is only a preferred example, but not limited thereto, and can be properly replaced and/or modified as required.

As in the above technical solution, the base is made of steel, which increases the weight of the base, making the device more stable and less susceptible to external influences. This manner is only a preferred example, but not limited thereto, and can be properly replaced and/or modified as required.

The number of devices and the scale of processing described here are used to simplify the description of the present invention. It is obvious to those skilled in the art that the application, modification and change of the backsight leveling rod fixing device for bridge static load test deflection measurement of the present invention are obvious.

Although the embodiment of the present utility model has been disclosed as above, it is not limited to the use listed in the specification and implementation, it can be applied to various fields suitable for the present utility model, and for those familiar with the art, Further modifications can be readily effected, so the invention is not limited to the specific details and examples shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims (7)

1. A backsight leveling rod fixing device for bridge static load test deflection measurement is characterized in that, comprising: The base is an equilateral triangle, and the three corners of the base are respectively provided with horizontal adjustment mechanisms; The leveling rod clamping device is rotatably connected to the base. 2. The backsight leveling rod fixing device for bridge static load test deflection measurement as claimed in claim 1, is characterized in that, described level adjustment mechanism comprises: be arranged on the first threaded hole on each corner, described first screw thread A first screw rod matched with the hole passes through the hole, the upper end of the first screw rod is provided with a knob rod, and the lower end of the first screw rod is a supporting foot. 3. The backsight leveling rod fixing device used for bridge static load test deflection measurement as claimed in claim 1, is characterized in that, said leveling rod clamping device comprises: a chi base rotatably connected with the base, on which a rotatable A swinging ruler groove, the first angle steel and the second angle steel are arranged on opposite sides of the ruler groove, the first angle steel is provided with a first clamping hole, and a first clamp matching it passes through it. holding screw; the second angle steel is provided with a second clamping hole, which passes through a second clamping screw matched with it, and the outer end of the first clamping screw and the second clamping screw Knobs are respectively provided, and rubber gaskets are respectively provided at the inner ends. 4. The backsight leveling rod fixing device for bridge static load test deflection measurement as claimed in claim 3, characterized in that, the rotatable connection mode between the ruler base and the base is: the center of the base is provided with a circular groove , a rotating bearing is installed in the center, and a rod is provided at the lower end of the ruler base, and the rod is fixedly inserted into the rotating bearing; the lower part of the ruler base is fixedly connected with a gear with the same radius, and a fine-tuning device is provided next to the ruler base. Knob, the lower end of the fine-tuning knob is fixedly connected with the rotating gear arranged in the base, and the rotating gear is meshed with the gear at the bottom of the ruler base. 5. The backsight leveling rod fixing device for bridge static load test deflection measurement as claimed in claim 3, characterized in that, the swingable connection mode between the chi groove and the chi base is: the bottom of the chi groove is provided with a semicircular gear , there is an installation groove in the middle of the ruler base, and the rods on both sides of the bottom of the ruler groove are inserted into the holes on the wall of the installation groove to realize swinging. The internal swing gear is fixedly connected, and the swing gear is meshed with the semicircular gear of the ruler groove. 6. The backsight leveling rod fixing device for bridge static load test deflection measurement as claimed in claim 2, characterized in that, a rubber block is fixedly arranged under the said supporting foot. 7. The backsight leveling rod fixing device for bridge static load test deflection measurement as claimed in claim 1, wherein said base is a steel base.