Tunnel segment measuring scale

Abstract

The utility model discloses a tunnel segment measuring scale, which relates to the technical field of measuring equipment and comprises a main scale and two auxiliary scales, and a gear is movably mounted at the central position of the inner side wall of the main scale through a rotating shaft; the two auxiliary rulers are sleeved in the main ruler in a sliding manner, and the two auxiliary rulers are meshed with the gear; a reflector plate is arranged at the central position of the outer vertical surface of the main ruler; a horizontal ruler and a handle are oppositely mounted on the upper and lower outer planes of the main ruler; a fastening bolt is arranged at one end of the outer vertical face of the main ruler, penetrates through the main ruler and then abuts against an auxiliary ruler. According to the tunnel segment measuring ruler, a telescopic structure is adopted, carrying is convenient, the total length can be rapidly adjusted by pulling the auxiliary rulers so as to adapt to the inner diameter of a pipe ring, one auxiliary ruler only needs to be pulled to drive the other auxiliary ruler to synchronously extend in the measuring process, it is guaranteed that the reflector plate on the main ruler is kept at the center position, and the measuring efficiency is improved. And the total station is convenient to automatically search and position to realize measurement operation, the structure is simple, and the layout is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring equipment, in particular to a tunnel segment measuring ruler. Background Art

[0002] Segment attitude measurement is an important technical measure to determine whether the shield machine advancement route and segment installation position conform to the design route during the shield machine advancement process. Engineering surveying technicians use the total station and segment attitude measuring ruler to collect segment coordinate information, compare it with the design coordinates, and determine whether the current position deviates from the design route.

[0003] At present, the existing integrated segment measuring ruler is too long and not easy to carry; and the telescopic segment measuring ruler cannot ensure that the sub-rules at both ends of the main ruler are extended at the same time, and the distance between the sub-rules at both ends and the main ruler cannot be kept consistent. It is also necessary to use a box ruler to measure to ensure that the reflector remains in the center position, which is inconvenient to operate.

[0004] How to develop a tunnel segment measuring ruler that can keep the extension of two auxiliary rulers consistent and ensure that the reflector on the main ruler remains in the center position, so that it is easy to carry and measure, has become a technical problem that needs to be solved urgently by technical personnel in this field. Utility Model Content

[0005] The utility model aims to provide a tunnel segment measuring ruler to solve the problems listed in the background technology.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The utility model discloses a tunnel segment measuring ruler, which includes a main ruler and two auxiliary rulers. A gear is movably installed at the center of the inner wall of the main ruler through a rotating shaft; the two auxiliary rulers are slidably sleeved inside the main ruler, and the two auxiliary rulers are meshed with the gears;

[0008] A reflective sheet is installed at the center of the outer facade of the main ruler;

[0009] A level and a handle are mounted on the upper and lower outer planes of the main ruler in a relative manner;

[0010] A fixing bolt is arranged at one end of the outer facade of the main ruler, and the fixing bolt penetrates through the main ruler and abuts against the auxiliary ruler.

[0011] Preferably, the length of the main ruler is 2.5 meters, and the length of the secondary ruler is 2 meters.

[0012] Preferably, the two secondary rulers are arranged relatively and staggered inside the main ruler.

[0013] Preferably, the secondary ruler includes a rack and a secondary ruler body, the rack is fixedly connected to the secondary ruler body along the length direction, and the non-working surface of the rack is flush with the upper end surface of the secondary ruler body; the lower end surface of the secondary ruler body is provided with a groove, and the groove cooperates with the rack of another secondary ruler.

[0014] Preferably, both the main ruler and the secondary ruler adopt a hollow structure.

[0015] Compared with the prior art, the beneficial technical effects of the utility model are:

[0016] The utility model discloses a tunnel segment measuring ruler, which adopts a telescopic structure and is easy to carry. The total length can be quickly adjusted by pulling a sub-rule to adapt to the inner diameter of the pipe ring. When measuring, only one sub-rule needs to be pulled to drive the other sub-rule to extend synchronously, ensuring that the reflector on the main ruler maintains a central position, which is convenient for the total station to automatically search and locate to realize the measurement operation. The utility model has a long service life, a simple structure, is easy to lay out, and has a low manufacturing and use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model will be further described below in conjunction with the accompanying drawings.

[0018] Figure 1 This is a three-dimensional schematic diagram (section view) of a tunnel segment measuring ruler of the utility model;

[0019] Figure 2 This is a schematic diagram of the main view of a tunnel segment measuring ruler of the utility model;

[0020] Figure 3 This is a schematic diagram of the main view (section view) of a tunnel segment measuring ruler of the utility model;

[0021] Figure 4 This is a top view schematic diagram of a tunnel segment measuring ruler of the utility model;

[0022] Figure 5 It is a schematic diagram of the southwest isometric three-dimensional arrangement of two auxiliary rulers of the utility model;

[0023] Figure 6 It is a schematic diagram of the northeast isometric three-dimensional arrangement of two auxiliary rulers of the utility model.

[0024] Explanation of the reference numerals: 1. main ruler; 2. level ruler; 3. gear; 4. handle; 5. auxiliary ruler; 501. rack; 502. auxiliary ruler body; 6. reflective sheet; 7. fastening bolt. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] like Figure 1-6 As shown, a tunnel segment measuring ruler comprises a main ruler 1 and two auxiliary rulers 5, wherein a gear 3 is movably mounted on the center of the inner wall of the main ruler 1 via a rotating shaft; the two auxiliary rulers 5 are slidably sleeved inside the main ruler 1, and the two auxiliary rulers 5 are meshed with the gear 3;

[0027] A reflective sheet 6 is installed at the center of the outer surface of the main ruler 1;

[0028] A level ruler 2 and a handle 4 are relatively mounted on the upper and lower outer planes of the main ruler 1, and the surveyor can adjust the level of the segment measuring ruler according to the indication of the level ruler; the setting of the handle 4 improves the overall portability.

[0029] Specifically, a fixing bolt 7 is provided at one end of the outer facade of the main ruler 1. The fixing bolt 7 penetrates the main ruler 1 and abuts against one of the auxiliary rulers 5. When the auxiliary ruler body is extended to the specified position, the auxiliary ruler is fixed by tightening the fixing bolt. Only one auxiliary ruler needs to be fixed to realize the locking operation of the other auxiliary ruler, which is convenient and quick to operate.

[0030] Specifically, the length of the main ruler 1 is 2.5 meters, and the length of the secondary ruler 5 is 2 meters.

[0031] Specifically, the two sub-scales 5 are relatively staggeredly arranged inside the main scale 1. By pulling the main body of the sub-scale on one side, the main body of the sub-scale on the other side can be driven to extend out of the main scale through the gears, thereby ensuring that the lengths of the sub-scale main bodies extending from both ends of the main scale remain consistent. Further, it is ensured that the reflective sheet at the center position of the main scale is at the center position of the entire measuring scale.

[0032] like Figure 5-6 As shown, the secondary ruler 5 includes a rack 501 and a secondary ruler body 502, wherein the rack 501 is fixedly connected to the secondary ruler body 502 along the length direction, and the non-working surface of the rack 501 is flush with the upper end surface of the secondary ruler body 502; the lower end surface of the secondary ruler body 502 is provided with a groove, and the groove cooperates with the rack 501 of another secondary ruler 5, wherein the length of the rack is 1 meter, and the length of the secondary ruler body is 1 meter.

[0033] Specifically, the main ruler 1 and the auxiliary ruler 5 both adopt a hollow structure, achieving an overall lightweight design and being easy to carry.

[0034] The use of the utility model:

[0035] Step 1: The surveyor carries the segment measuring ruler to the pipe ring to be measured by the handle and sets up the total station;

[0036] Step 2: Adjust the length of the segment measuring ruler, pull one sub-rule, and the other sub-rule will be extended synchronously by the gear. After the actual measurement needs are met, tighten the sub-rule with the fastening bolts to position it;

[0037] Step 3: Adjust the level of the segment measuring ruler. The surveyor will accurately adjust the segment measuring ruler to a horizontal state according to the direction of the bubble on the level ruler.

[0038] Step 4: Measure, calculate the height difference between the actual center of the tunnel ring and the center of the reflector by using the inner diameter of the tunnel ring, the elongation of the segment measuring ruler, and the size of the reflector; measure the three-dimensional coordinates of the center of the reflector through the automatic search and positioning of the total station, and deduce the three-dimensional coordinates of the actual center of the tunnel ring to complete the measurement;

[0039] Step 5: Import the measured data into the calculation software to obtain the measurement results of the segment posture.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A tunnel segment measuring ruler, characterized in that: The invention comprises a main ruler (1) and two auxiliary rulers (5); a gear (3) is movably mounted on the center of the inner wall of the main ruler (1) via a rotating shaft; the two auxiliary rulers (5) are slidably mounted inside the main ruler (1), and the two auxiliary rulers (5) are meshed with the gear (3); A reflective sheet (6) is installed at the center of the outer facade of the main ruler (1); A level ruler (2) and a handle (4) are mounted opposite to each other on the upper and lower outer planes of the main ruler (1); A fixing bolt (7) is provided at one end of the outer facade of the main ruler (1); the fixing bolt (7) penetrates through the main ruler (1) and abuts against one of the auxiliary rulers (5).

2. The tunnel segment measuring ruler according to claim 1, characterized in that: The length of the main ruler (1) is 2.5 meters, and the length of the secondary ruler (5) is 2 meters.

3. The tunnel segment measuring ruler according to claim 2, characterized in that: The two auxiliary rulers (5) are arranged relatively and staggered inside the main ruler (1).

4. The tunnel segment measuring ruler according to claim 1, characterized in that: The secondary ruler (5) comprises a rack (501) and a secondary ruler body (502); the rack (501) is fixedly connected to the secondary ruler body (502) along the length direction, and the non-working surface of the rack (501) is flush with the upper end surface of the secondary ruler body (502); the lower end surface of the secondary ruler body (502) is provided with a groove, and the groove cooperates with the rack (501) of another secondary ruler (5).

5. The tunnel segment measuring ruler according to claim 1, characterized in that: The main ruler (1) and the auxiliary ruler (5) both adopt a hollow structure.

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