Universal foundation pit slope gradient inspection tool

Abstract

The utility model discloses a universal foundation pit slope gradient inspection tool, which is integrally cross-shaped and comprises a vertical rod, a cross rod, an inclined rod, a butterfly-shaped screw, a horizontal sliding chute, a suspension point, a pendant line, a steel conical line pendant and a slope ratio error dial. The vertical rod, the cross rod and the inclined rod are all made of square steel pipes, the vertical rod and the inclined rod are welded and fixed, the steel conical plummet and the slope ratio error dial are fixed to the vertical rod, scales are marked on the cross rod, and the cross rod can slide leftwards and rightwards through a horizontal sliding groove of the cross rod to adjust the extending length of the cross rod. The connecting line of the two end points of the transverse rod and the vertical rod and the horizontal ground form a required gradient, the two end points of the transverse rod and the vertical rod are placed on the slope, the actual slope error of the slope can be obtained by reading the falling line on the dial, and therefore the actual slope value and error of the foundation pit slope can be measured. Therefore, the inspection of slopes with various gradients can be quickly, conveniently, universally and accurately realized.

Description

Technical Field

[0001] The utility model relates to the inspection of various conventional slopes of foundation pit slopes in the field of construction, and is mainly suitable for the inspection of slopes with a slope gradient of 1:0.2 to 1:0.5. After the construction of the foundation pit slope is completed, the crossbar of the tool is adjusted to a corresponding position according to the designed slope of the foundation pit slope and then fixed. The tool is then erected vertically on the slope surface, and the actual slope of the slope is quickly and accurately measured according to the angle of the plumb line offset. The utility model is specifically a universal foundation pit slope inspection tool. Background Art

[0002] During the construction of foundation pit engineering in the construction field, when the depth of the foundation pit exceeds 2m, in order to ensure the safety of the foundation pit construction, it is necessary to take foundation pit support measures. Slope support is the most commonly used, most extensive, most reasonable and economical form of foundation pit support. The design slope of the foundation pit slope needs to be verified and determined by the support designer, which is generally between 1:0.2 and 1:0.5. During the construction of the foundation pit slope, excavators are often used for excavation and slope repair. During the excavation and slope repair of the foundation pit, the actual slope slope repaired by the machine often has errors. If the actual slope is too large than the design slope, it will affect the construction operation space of the structural foundation in the foundation pit. If the actual slope is too small than the design slope, it will not meet the soil stability of the slope soil layer, which is easy to cause collapse accidents. Therefore, after the construction process and completion of the foundation pit slope, the slope slope needs to be measured and checked to ensure the quality and safety of the foundation pit construction. In the traditional slope inspection method of foundation pit, the slope is generally controlled by controlling the position of the top line and the bottom line, or by using a "triangular slope ruler" supplemented by a plumb bob or a level ruler. The "triangular slope ruler" is a right-angled triangle structure, and the ratio of the two right-angle sides is the slope ratio of the slope. Therefore, according to different slope values, the corresponding "triangular slope ruler" is made. When using it, it can be used with a plumb bob and a level ruler, and the hypotenuse of the "triangular slope ruler" can be placed on the measured slope, and then the plumb bob and the level ruler can be observed to determine whether the slope is qualified. The above method has many defects and shortcomings. First of all, the above method can only roughly estimate the actual slope of the slope through visual inspection and experience, and cannot accurately and directly measure the actual slope value and deviation value, and cannot determine whether the slope is qualified, and cannot guide subsequent construction; then, the above method is less practical, because after the slope surface of the foundation pit is constructed, the surface is often not very smooth. When the hypotenuse of the "triangular slope ruler" is placed on the slope, the hypotenuse often cannot fit the slope surface tightly, resulting in the inability to determine whether the slope is qualified; in addition, the above method is not universal. When a foundation pit has multiple slopes, it is necessary to make multiple slope rulers, which are not only inconvenient to carry but also troublesome to operate, and are not simple and universal. Utility Model Content

[0003] In order to solve the problems that conventional "slope rulers" cannot be used universally in the process of pit slope inspection, cannot accurately measure slopes and deviation values, etc., the utility model provides a universal pit slope inspection tool, which is suitable for slopes of different slopes by combining a horizontal bar and a vertical bar that can be moved laterally to adjust the length, and optimizes and cancels the hypotenuse of the triangle to avoid the drawbacks of being unable to measure the slope and excessive measurement errors caused by uneven slopes. In addition, a plumb line and a slope ratio error dial are added to measure the error value between the actual slope of the slope and the designed slope, so as to quickly, conveniently, universally and accurately realize the inspection of slopes of various slopes.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A universal foundation pit slope inspection tool includes a vertical pole, a horizontal pole, an inclined pole, a butterfly screw 1, a butterfly screw 2, a horizontal slide, a hanging point, a plumb line, a steel cone plumb line, and a slope ratio error dial. The vertical pole, the horizontal pole, and the inclined pole are all square steel pipes, which are welded and fixed with butterfly screws to form a stable right triangle structure. The horizontal pole is provided with a length scale, a horizontal slide, and two butterfly screws. The horizontal pole can slide left and right through the horizontal slide, so that the scale on the horizontal pole can be changed from 200 to 500 mm. The position of the horizontal pole scale is adjusted accordingly according to the design slope of the foundation pit slope, and then the horizontal pole can be firmly fixed by tightening the butterfly screw to measure the slope. When measuring the slope of other slopes, the length of the horizontal pole scale is adjusted again according to the design slope of the slope to measure the slope of other slopes.

[0006] The above-mentioned universal foundation pit slope inspection tool has a vertical rod length of 1000mm below the horizontal rod, and a scale of 0~500mm is marked on the horizontal rod from the left end, so that the exposed length of the horizontal rod on the left side of the vertical rod can vary from 200~500mm. For example, if the measured design slope is 1:0.3, the horizontal rod scale is adjusted to the 300mm scale to make the exposed length of the horizontal rod 300mm, and then the horizontal rod is firmly fixed with a butterfly screw. Finally, the measuring tool is placed vertically on the slope surface, with the left end of the horizontal rod and the lower end of the vertical rod in contact with the slope surface. At this time, observe whether the plumb line coincides with the 0 scale of the slope ratio error dial. If so, it means that the measured slope of the slope is consistent with the designed slope. If the plumb line does not coincide with the 0 scale of the slope ratio error dial, the deviation value of the slope slope and the designed slope can be obtained according to the scale value of the plumb line. This measuring tool can measure all slopes with a slope range of 1:0.2 to 1:0.5.

[0007] The above-mentioned universal foundation pit slope inspection tool selects a point on the vertical pole below the horizontal pole as the hanging point to hang and fix the steel conical plumb line and the slope ratio error dial; the steel conical plumb line is a conical steel plumb line, which is hung on the fixed point by the plumb line; the slope ratio error dial is a semicircular thin steel plate with a scale, and its center is fixed at the hanging point. The arc edge of the slope ratio error dial is marked with an arc scale, and the scale value is the error value of the slope ratio. When the actual slope of the slope is consistent with the designed slope, the measuring tool is erected on the slope, and the plumb line coincides with the 0 scale on the slope ratio error dial. If there is an error in the slope, the plumb line does not coincide with the 0 scale on the slope ratio error dial. The actual slope of the slope can be directly measured by reading the plumb line on the slope ratio error dial, and the deviation between the design value and the actual value of the slope can be obtained, thereby conveniently, quickly and accurately guiding on-site construction management personnel to take the next slope correction decision and measures.

[0008] The beneficial effect of the utility model is that it effectively solves the accuracy of the measurement of foundation pit slope on the construction site, quantifies the actual slope data of the slope, accurately measures the slope and error, and fundamentally improves the convenience, rapidity, accuracy and versatility of the slope measurement work from the perspective of measuring tools and measuring technology, significantly promotes the optimization and improvement of construction tools, the convenience, practicality and standardization of construction methods and construction operations, improves construction accuracy and efficiency, and better guarantees the quality of engineering construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0010] Figure 1 It is a schematic diagram of the utility model, including a front view, a side view and a top view;

[0011] Figure 2 It is a schematic diagram for using the foundation pit slope inspection tool;

[0012] In the figure, 1. vertical pole, 2. horizontal pole, 3. diagonal pole, 4. butterfly screw 1, 5. butterfly screw 2, 6. horizontal slide groove, 7. hanging point, 8. plumb line, 9. steel conical plumb line, 10. slope ratio error dial. DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with specific embodiments.

[0014] Please refer to Figure 1A universal foundation pit slope inspection tool comprises a vertical pole (1), a horizontal pole (2), an inclined pole (3), a butterfly screw 1 (4), a butterfly screw 2 (5), a horizontal slide groove (6), a hanging point (7), a plumb line (8), a steel conical plumb line (9), and a slope ratio error scale (10). The vertical pole (1) and the inclined pole (3) are welded and fixed to form a whole. The vertical pole (1) and the inclined pole (3) are respectively fixed to the horizontal pole (2) by the butterfly screw 1 (4) and the butterfly screw 2 (5) to form a stable right-angled triangle structure. Horizontal slide grooves (6) are reserved at the positions of the butterfly screws 1 (4) and the butterfly screws 2 (5) on the left and right sides of the horizontal pole (2). The width of the horizontal slide groove (6) is the same as the diameter of the butterfly screw 1 (4) and the butterfly screw 2 (5), so that the horizontal pole can move horizontally. The distance between the lower end of the vertical pole (1) and the fixed point is 1000 mm, and the horizontal pole (2) is marked with a scale of 0 to 500 mm from the end thereof, which is used to accurately locate the exposed extension length of the horizontal pole (2). A certain position on the vertical pole (1) is selected as a hanging point (7) for hanging and fixing a steel conical plumb line (9) and a slope ratio error dial (10); the steel conical plumb line (9) is hung on the hanging point through a plumb line (8), the center of the slope ratio error dial (10) is fixed at the hanging point (7), the arc edge of the slope ratio error dial is marked with arc scales, and the reading of the plumb line (8) on the slope ratio error dial (10) is the actual slope error.

[0015] Working principle: Refer to Figure 2For a certain foundation pit slope, the extension length value of the crossbar (2) required by the measuring tool can be calculated based on the known design value of the slope of the foundation pit slope. By adjusting the reading on the crossbar (2), the extension length of the crossbar (2) is adjusted to make it suitable for measuring the slope of the slope. At this time, the angle between the line connecting the left end point of the crossbar and the lower end point of the vertical pole and the horizontal line is the design value of the slope of the foundation pit slope. Then, the measuring tool is placed vertically on the slope surface, and the left end point of the horizontal rod (2) and the lower end point of the vertical rod (1) are in contact with the slope soil surface, so that it can be used to measure whether the actual slope of the foundation pit slope meets the requirements; if the plumb line (8) coincides with the 0 scale line of the slope ratio error scale (10), it means that the slope of the foundation pit slope is equal to the design slope value and the slope meets the requirements; if the plumb line (8) does not coincide with the 0 scale line on the slope ratio error scale (10), it means that there is an error between the actual slope of the foundation pit slope and the design slope at this time. If the reading on the slope ratio error scale (10) is a positive number at this time, it can be determined that the actual slope of the slope is greater than the design slope. On the contrary, if the reading is a negative number, it can be determined that the actual slope of the slope is smaller than the design slope and the slope is dangerous. Then, the actual slope value measured is compared with the design slope value for error, so as to accurately, quickly and objectively help the construction management personnel or slope designers to take the next slope repair decision and measures. When there are multiple design slope values ​​for the foundation pit slope, the crossbar extension length of the measuring tool can be adjusted accordingly according to the design values ​​of the slopes, so that it can be suitable for measuring different slopes, thereby realizing the versatility and convenience of the tool.

[0016] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A universal foundation pit slope inspection tool, comprising a vertical pole (1), a horizontal pole (2), an inclined pole (3), a butterfly screw 1 (4), a butterfly screw 2 (5), a horizontal slide (6), a hanging point (7), a plumb line (8), a steel conical plumb line (9), and a slope ratio error dial (10), characterized in that: The vertical rod (1) and the diagonal rod (3) are welded and fixed to form a whole. The vertical rod (1) and the diagonal rod (3) are respectively fixed to the cross rod (2) by butterfly screws 1 (4) and butterfly screws 2 (5) to form a stable right triangle structure. Horizontal slide grooves (6) are reserved at the positions of the butterfly screws 1 (4) and butterfly screws 2 (5) on the left and right sides of the cross rod (2). The width of the horizontal slide grooves (6) is the same as the diameter of the butterfly screws 1 (4) and butterfly screws 2 (5), so that the cross rod can move horizontally.

2. A universal foundation pit slope inspection tool as claimed in claim 1, characterized in that: The distance between the lower end of the vertical pole (1) and the fixed point is 1000 mm. The horizontal pole (2) is marked with a scale of 0 to 500 mm from the end thereof for accurately locating the exposed extension length of the horizontal pole (2). A certain position on the vertical pole (1) is selected as a hanging point (7) for hanging and fixing a steel cone plumb line (9) and a slope ratio error dial (10). The steel cone plumb line (9) is hung on the hanging point through a plumb line (8). The center of the slope ratio error dial (10) is fixed to the hanging point (7). The arc edge of the slope ratio error dial is marked with arc scales. The reading of the plumb line (8) on the slope ratio error dial (10) is the actual slope error, which can be used to measure whether the actual slope of the foundation pit slope meets the requirements.

3. A universal foundation pit slope inspection tool as claimed in claim 1, characterized in that: A certain position on the vertical pole (1) is selected as a hanging point (7) for hanging and fixing a steel conical plumb line (9) and a slope ratio error dial (10). The steel conical plumb line (9) is a conical steel plumb and is hung on the hanging point through a plumb line (8). The slope ratio error dial (10) is a semicircular thin steel plate, the center of which is fixed at the hanging point (7), and the edge of the arc is marked with arc scales. The reading of the plumb line (8) on the slope ratio error dial (10) is the actual slope error.

4. A universal foundation pit slope inspection tool as claimed in claim 1, characterized in that: The reading on the crossbar (2) can be adjusted to adjust the extension length of the crossbar (2) so that it is suitable for the slope. At this time, the angle between the line connecting the left end of the crossbar and the end below the vertical pole and the horizontal line is the design requirement value of the slope of the foundation pit slope. When there are multiple slope values ​​at different parts of the foundation pit slope, the extension length of the crossbar of the measuring tool can be adjusted accordingly according to the slope values ​​of each slope, so that it is suitable for measuring different slopes.

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