Temporary control point turning device for tunnel measurement

Abstract

The utility model discloses a temporary control point turning device for tunnel measurement, which relates to the technical field of tunnel construction and comprises a positioning cylinder, a conical foot is fixedly mounted at the bottom end of the positioning cylinder, a measurement mark is arranged above the right side of the positioning cylinder, and a guide cylinder is fixedly mounted at the center of the top end of the measurement mark. The guide cylinder is funnel-shaped, a fixing mechanism is arranged in the positioning cylinder, mounting mechanisms are arranged at the upper end and the lower end of the left side of the measuring mark, the fixing mechanism comprises a half-tooth screw rotationally mounted on the inner surface of the positioning cylinder, and an adjusting block is in threaded connection with the lower portion of the surface of the half-tooth screw. Compared with an existing common temporary control point turning device for tunnel measurement, the temporary control point turning device for tunnel measurement has the advantages that the installation firmness of the whole positioning cylinder can be greatly improved, the embedding stability degree is improved, the positioning cylinder is effectively prevented from deviating and loosening, and therefore the accuracy of tunnel measurement work is improved in a disguised mode.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a temporary control point turning point device for tunnel measurement. Background Art

[0002] Tunnel engineering measurement is carried out at various stages of tunnel engineering planning, survey and design, construction and operation management. During the measurement process, it is necessary to use the positioning device of the control point to guide the position of the instrument measurement point to ensure the accurate positioning of the measurement position, make the measurement data more accurate and reduce errors.

[0003] For example, the public document with application number 202223439210.X discloses a temporary control point turning device for tunnel measurement. This utility model effectively solves the problem of the stability of the buried points during the measurement turning process, reduces the angle measurement and side measurement errors during the measurement process, and protects the crosshairs of the measurement mark, making it easier for surveyors to align the measurement, and also increases the number of times the measurement mark is reused, reducing costs. However, when installing the positioning parts, the temporary control point turning device for tunnel measurement only uses the steel bar insert cone to directly insert into the ground for insertion and fixation, and the fixing method of maintaining the same vertical straight line with the ground may cause the steel bar insert to be offset and tilted during use, thereby affecting the accuracy of the measurement.

[0004] Therefore, in view of this, the shortcomings of the existing structure are studied and improved, and a temporary control point turning point device for tunnel measurement is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a temporary control point turning point device for tunnel measurement, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a temporary control point turning point device for tunnel measurement, comprising a positioning cylinder, a cone foot is fixedly installed at the bottom end of the positioning cylinder, a measurement mark is provided on the upper right side of the positioning cylinder, a guide cylinder is fixedly installed at the top center of the measurement mark, the guide cylinder is arranged in a funnel shape, a fixing mechanism is provided inside the positioning cylinder, and mounting mechanisms are provided at the upper and lower ends of the left side of the measurement mark.

[0007] Preferably, the fixing mechanism comprises a half-thread screw rotatably mounted on the inner surface of the positioning cylinder, and an adjusting block is threadedly connected below the surface of the half-thread screw.

[0008] Preferably, the fixing mechanism further comprises folding rods rotatably arranged on the left and right sides of the surface of the adjustment block, and the bottom ends of the folding rods are rotatably connected to the bottom end of the inner surface of the positioning cylinder.

[0009] Preferably, the fixing mechanism further comprises a push plate rotatably mounted at a folding end point in the middle of the folding rod, and an insert cone is fixedly mounted on the outer surface of the push plate.

[0010] Preferably, the mounting mechanism comprises an elastic semi-open ring fixedly mounted on the upper and lower ends of the left side of the measurement mark surface, and a rubber sleeve is fixedly provided on the inner surface of the elastic semi-open ring.

[0011] Preferably, the mounting mechanism further comprises lugs fixedly provided on both sides of the opening of the elastic semi-open ring, and screw holes are provided on the upper and lower sides of the surfaces of the lugs.

[0012] Preferably, the mounting mechanism further includes a bolt passing through the screw hole, and the bolt is threadedly connected to the screw hole.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. This utility model forms a cross-shaped fixed state underground through the arrangement of a fixing mechanism, a half-thread screw, an adjustment block, a folding rod, a push plate, and an insert cone. This can greatly enhance the installation and burial stability of the entire positioning cylinder, effectively preventing the positioning cylinder from deflecting or loosening, thereby indirectly improving the accuracy of tunnel measurement work.

[0015] 2. The utility model can quickly assemble and install the measuring mark through the arrangement of the mounting mechanism, elastic semi-open ring, rubber sleeve, lug, screw hole and bolt. At the same time, when replacing the positioning cylinder of different lengths according to different measurement requirements, the measuring mark can also be quickly disassembled and assembled for replacement, thereby improving the reuse rate of the same measuring mark and reducing costs.

[0016] 3. The utility model sets a guide tube so that the center point of the bottom end of the guide tube is directly opposite to the center position of the cross at the upper end of the measuring mark. By utilizing the upper inclined portion of the guide tube, the centering rod body can be quickly inserted. By passing through the vertical cylinder portion below the guide tube, the centering rod body can be kept vertically facing the center point of the cross, so that the centering rod body can be quickly and accurately aligned with the measuring mark. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a cross-sectional view of the positioning tube and a schematic diagram of the fixing mechanism structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the installation mechanism structure of the utility model.

[0020] In the figure: 1. Positioning cylinder; 2. Cone foot; 3. Measuring mark; 4. Guide cylinder; 5. Fixing mechanism; 501. Half-thread screw; 502. Adjusting block; 503. Folding rod; 504. Push plate; 505. Insert cone; 6. Mounting mechanism; 601. Elastic half-open ring; 602. Rubber sleeve; 603. Lug; 604. Screw hole; 605. Bolt. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figure 1-Figure 2 As shown, a temporary control point turning point device for tunnel measurement includes a positioning cylinder 1, a cone foot 2 is fixedly installed at the bottom end of the positioning cylinder 1, a measuring mark 3 is provided on the upper right side of the positioning cylinder 1, a guide cylinder 4 is fixedly installed at the top center of the measuring mark 3, and the guide cylinder 4 is arranged in a funnel shape. A fixing mechanism 5 is provided inside the positioning cylinder 1, and mounting mechanisms 6 are provided at the upper and lower ends of the left side of the measuring mark 3.

[0023] By adopting the above technical solution, the center point of the bottom end of the guide tube 4 is opposite to the center position of the cross at the upper end of the measuring mark 3. The centering rod body can be quickly inserted by utilizing the upper inclined portion of the guide tube 4. The centering rod body can be kept perpendicular to the center point of the cross through the vertical cylinder portion below the guide tube 4, so that the centering rod body can be quickly and accurately centered with the measuring mark 3.

[0024] Furthermore, the fixing mechanism 5 includes a half-thread screw 501 rotatably installed on the inner surface of the positioning cylinder 1, and an adjustment block 502 is threadedly connected below the surface of the half-thread screw 501. The fixing mechanism 5 also includes a folding rod 503 rotatably set on the left and right sides of the surface of the adjustment block 502, and the bottom end of the folding rod 503 is rotatably connected to the bottom end of the inner surface of the positioning cylinder 1.

[0025] By adopting the above technical solution, the half-thread screw 501 rotates and is limited by the folding rod 503, thereby causing the adjustment block 502 to move downward;

[0026] The folding rod 503 is connected by a rotating member at one end of the middle part of the upper and lower rods. As the adjustment block 502 moves downward, the upper and lower rods of the folding rod 503 are bent in half from the middle, and the middle rotating point will bulge outward.

[0027] Furthermore, the fixing mechanism 5 also includes a push plate 504 rotatably mounted at a folding end point in the middle of the folding rod 503 , and an insert cone 505 is fixedly mounted on the outer surface of the push plate 504 .

[0028] By adopting the above technical solution, the push plate 504 protrudes outward following the folding rod 503, thereby pushing the insert cone 505 into the soil on both sides, forming a cross-fixed state under the ground, which can greatly improve the installation firmness of the entire positioning cylinder 1.

[0029] like Figure 1 and Figure 3 As shown, the mounting mechanism 6 includes an elastic semi-open ring 601 fixedly mounted on the upper and lower ends of the left side surface of the measurement mark 3 , and a rubber sleeve 602 is fixedly provided on the inner surface of the elastic semi-open ring 601 .

[0030] By adopting the above technical solution, the opening size of the elastic semi-open ring 601 can be adjusted to adapt to positioning cylinders 1 of different diameters;

[0031] The rubber sleeve 602 preferentially contacts the surface of the positioning tube 1 to increase friction and improve the covering stability.

[0032] Furthermore, the mounting mechanism 6 further includes lugs 603 fixedly provided on both sides of the opening of the elastic semi-open ring 601 , and screw holes 604 are provided on the upper and lower sides of the surface of the lugs 603 .

[0033] By adopting the above technical solution, the screw hole 604 on the lug 603 serves as a connection hole, and the position of the lug 603 can change the opening size of the elastic semi-open ring 601.

[0034] Furthermore, the mounting mechanism 6 further includes a bolt 605 passing through the screw hole 604 , and the bolt 605 is threadedly connected to the screw hole 604 .

[0035] By adopting the above technical solution, the bolt 605 is inserted into the screw hole 604 and screwed, which can gradually close the lugs 603 towards each other, and then the elastic semi-open ring 601 fits and locks and covers the surface of the positioning cylinder 1, and the measurement mark 3 is quickly assembled and installed.

[0036] Working principle: When using the temporary control point turning device for tunnel measurement, first, according to the requirements of different control points, select a positioning tube 1 of appropriate length, then, put the measuring mark 3 on the surface of the positioning tube 1 through the elastic semi-open ring 601, insert the bolt 605 into the screw hole 604 and screw it, which can gradually make the lugs 603 close towards each other, and then make the elastic semi-open ring 601 fit and lock and cover the surface of the positioning tube 1, and quickly assemble and install the measuring mark 3. After the positioning tube 1 is inserted into the ground and fixed, rotate the half-tooth screw 501 to make the adjustment block 502 move downward under the limit of the folding rod 503, and then make the middle part of the folding rod 503 bend and fold, and the end point will bulge outward, causing the push plate 504 to move outward, and then push the cone 505 into the soil on both sides, forming a cross-fixed state under the ground, thereby performing a firm assembly. This is the working principle of the temporary control point turning device for tunnel measurement.

Claims

1. A temporary control point turning point device for tunnel measurement, comprising a positioning cylinder (1), characterized in that: A cone foot (2) is fixedly mounted on the bottom end of the positioning cylinder (1), a measuring mark (3) is provided on the upper right side of the positioning cylinder (1), a guide cylinder (4) is fixedly mounted on the top center portion of the measuring mark (3), the guide cylinder (4) is arranged in a funnel shape, a fixing mechanism (5) is provided inside the positioning cylinder (1), and mounting mechanisms (6) are provided on the upper and lower ends of the left side of the measuring mark (3).

2. A temporary control point turning point device for tunnel measurement according to claim 1, characterized in that: The fixing mechanism (5) comprises a half-thread screw (501) rotatably mounted on the inner surface of the positioning cylinder (1), and an adjusting block (502) is threadedly connected below the surface of the half-thread screw (501).

3. A temporary control point turning point device for tunnel measurement according to claim 1, characterized in that: The fixing mechanism (5) further comprises folding rods (503) rotatably arranged on the left and right sides of the surface of the adjustment block (502), and the bottom ends of the folding rods (503) are rotatably connected to the bottom end of the inner surface of the positioning cylinder (1).

4. A temporary control point turning point device for tunnel measurement according to claim 1, characterized in that: The fixing mechanism (5) further comprises a push plate (504) rotatably mounted at a folding end point in the middle of the folding rod (503), and an insert cone (505) is fixedly mounted on the outer surface of the push plate (504).

5. A temporary control point turning point device for tunnel measurement according to claim 1, characterized in that: The mounting mechanism (6) comprises an elastic semi-open ring (601) fixedly mounted on the upper and lower ends of the left side of the surface of the measuring mark (3), and a rubber sleeve (602) is fixedly provided on the inner surface of the elastic semi-open ring (601).

6. A temporary control point turning point device for tunnel measurement according to claim 1, characterized in that: The mounting mechanism (6) further comprises lugs (603) fixedly arranged on both sides of the opening of the elastic semi-open ring (601), and screw holes (604) are provided on the upper and lower sides of the surface of the lugs (603).

7. A temporary control point turning point device for tunnel measurement according to claim 1, characterized in that: The mounting mechanism (6) further comprises a bolt (605) passing through the screw hole (604), and the bolt (605) is threadedly connected to the screw hole (604).

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