Subway tunnel crack depth measuring device

Abstract

The utility model discloses a subway tunnel crack depth measuring device, and relates to the technical field of subway crack measurement. The device comprises a movable plate, an arc-shaped pressing plate, a first measuring rod and second measuring rods, the first measuring rod vertically penetrates through the center in the movable plate and is movably connected with the center in the movable plate, the peripheral side of the first measuring rod is movably connected with a rubber sheet, the arc-shaped pressing plate is fixed on the outer arc surface of the rubber sheet, and the second measuring rods are inserted in the movable plate on the outer side of the first measuring rod in an annular array penetrating mode. The two ends of the second measuring rod are fixedly provided with second limiting discs. The bottom of the movable plate is provided with movable openings corresponding to the second limiting discs in position. Through the arrangement of the movable plate, the arc-shaped pressing plate, the first measuring rod and the second measuring rod, the problems that errors are prone to being generated in the subway tunnel crack depth measuring process, the fall of the ground on the two sides of a crack is not easy to measure, and crack detection is not accurate enough are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to subway crack measurement technical field, especially, relate to a subway tunnel crack depth measuring device. BACKGROUND

[0002] Subway tunnel crack is a common problem, it can cause influence to tunnel structure safety and operation safety, crack's production can be due to multiple factors, including uneven stress of tunnel structure, problem in construction process, influence of external load, action of underground water etc., crack can lead to tunnel structure's destruction, and then influence tunnel's bearing capacity and stability, serious time can cause collapse accident, cause personnel casualty and property loss and then influence tunnel's bearing capacity and stability, serious time can cause collapse accident, cause personnel casualty and property loss, in order to determine crack's corresponding condition, need measuring device to determine crack's depth, determine this position concrete's cracking condition, but it still has the following disadvantages in actual use:

[0003] 1, subway tunnel crack depth measurement process, directly through the probe insertion crack, after detecting the bottom of crack, then extract, through the observation scale change, determine the corresponding crack depth, but in the extraction probe and insertion probe, it is through the sliding action to extend the probe, inevitably will cause the probe sliding, influence the accuracy of detection;

[0004] 2, subway tunnel crack depth measurement process, directly through the probe insertion crack, measure crack corresponding depth, but ground after splitting, due to the factor of soil vibration, the ground on both sides of crack often will produce difference, crack depth detection produces error, influence the convenience of use. UTILITY MODEL CONTENTS

[0005] The utility model discloses a subway tunnel crack depth measuring device, through setting movable plate, arc pressing plate, measuring rod no. 1 and measuring rod no. 2, solved the error in subway tunnel crack depth measurement process, and the difference of ground on both sides of crack is not easy to measure, the problem of crack detection is not accurate enough.

[0006] To solve the above technical problem, the utility model is realized through the following technical schemes:

[0007] The utility model discloses a subway tunnel crack depth measuring device, including movable plate, arc pressboard, measuring rod no. 1 and measuring rod no. 2, the movable plate inner center vertical through activity movable connection has measuring rod no. 1, the movable plate inner center vertical through activity movable connection has measuring rod no. 1, the movable plate inner center vertical through activity movable connection has measuring rod no. 1, the arc pressboard is fixed on the outer arc surface of rubber skin, the movable plate in the movable plate outside ring array through plugging has measuring rod no. 2, the both ends of measuring rod no. 2 are fixed with limit disc no. 2, the bottom of movable plate is correspondingly provided with movable mouth with limit disc no. 2 position, when working, through movable plate, measuring rod no. 1 and measuring rod no. 2 are movably connected in it, after the rubber skin in arc pressboard is pressed to measuring rod no. 1, the position between movable plate and arc pressboard is determined to limit, the depth of crack is measured through the taper head of measuring rod no. 1 cooperation bottom, the height difference of crack both sides is measured and displayed through measuring rod no. 2.

[0008] Further, the movable mouth in the top of the movable plate is provided with a movable hole, and the measuring rod no. 2 is movably connected in the movable hole.

[0009] Further, the outer arc surface of the arc pressboard is rotatably connected with a threaded rod, and the threaded rod is fixed with a rotating frame at an end away from the arc pressboard.

[0010] Further, the threaded rod is threadedly connected with a support seat at the periphery, and the support seat is fixed at the top of the movable plate.

[0011] Further, the top end of the measuring rod no. 1 is fixed with a limit disc no. 1, the bottom end of the measuring rod no. 1 is fixed with a taper head, and the periphery of the measuring rod no. 1 is printed with a printed scale no. 1.

[0012] Further, the periphery of the measuring rod no. 2 is movably connected with a printed scale no. 2, the distance between the printed scale no. 2 and the bottom end of the periphery of the measuring rod no. 2 is equal to the depth of the movable hole, the limit disc no. 2 at the bottom end of the measuring rod no. 2 is equal to the depth of the movable mouth, and the measuring rod no. 2 displays the ground height difference on both sides of the measured crack through the printed scale no. 2.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model discloses a movable plate, arc pressing plate and measuring rod one are set up, solved the error of subway tunnel crack depth measurement process easily produces the problem, through the movable plate is set up in the tunnel of subway corresponding need measurement crack position, immediately the cone head of measuring rod one bottom is inserted into movable plate, again inserts the crack in the tunnel, until the tip of cone head touches the bottom of crack, through the scale of measuring rod one extension movable plate top, determines the depth of corresponding crack, immediately rotates the rotating frame, drives screw rod rotation, through the rotation of screw rod, drives arc pressing plate movement, again promotes arc pressing plate movement, until rubber skin is pressed to measuring rod one, until compaction, after measuring rod one does not change position with movable plate movement, activity changes the value of measured, make subway tunnel crack depth measurement process more not easy to produce error.

[0015] 2. The utility model discloses a movable plate, measuring rod one and measuring rod two are set up, solved the crack both sides ground of subway tunnel crack depth measurement process difference not easy to be measured, the problem that the detection of crack is not enough accurate, when the both sides of crack have certain difference, through pressing movable plate, the bottom of movable plate is pressed to with the ground of high level flush, when the limiting disc no. 2 of measuring rod two bottom end in the position of high level is supported on the ground, the printed scale no. 2 on measuring rod two that movable plate shows changes, after observing, records the value, can determine the height difference of crack both sides, determines the height difference of crack, the detection of crack is more accurate. ACCURACY

[0016] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will be to the embodiment description needed to use the drawing briefly introduced, obviously, the following description in the drawing is only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0017] Figure 1 It is a subway tunnel crack depth measurement device assembly structure perspective view;

[0018] Figure 2 It is movable plate structure perspective view;

[0019] Figure 3 It is arc pressing plate structure perspective view;

[0020] Figure 4 It is measuring rod one structure perspective view;

[0021] Figure 5 It is measuring rod two structure perspective view.

[0022] Drawing mark:

[0023] 1, movable plate; 101, movable port; 102, movable hole; 2, arc-shaped pressing plate; 201, rubber skin; 202, threaded rod; 203, rotating frame; 204, support seat; 3, measuring rod one; 301, printed scale one; 302, limiting disc one; 303, taper head; 4, measuring rod two; 401, printed scale two; 402, limiting disc two. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Embodiment one

[0026] Please refer to Figures 1-4 The utility model discloses a subway tunnel crack depth measuring device, including movable plate 1, arc-shaped pressing plate 2, measuring rod one 3 and measuring rod two 4, the movable plate 1 center vertical through activity is connected with measuring rod one 3, when the movable plate 1 works, measuring rod one 3 and measuring rod two 4 are movably connected in it, the depth of crack is directly detected through measuring rod one 3, the rubber skin 201 is movably connected to the circumference of measuring rod one 3, the outer arc surface of rubber skin 201 is fixed with arc-shaped pressing plate 2, when arc-shaped pressing plate 2 moves towards measuring rod one 3, through rubber skin 201 contact measuring rod one 3, and after being pressed tightly with measuring rod one 3, determine after entering the corresponding crack, the height of measuring rod one 3 that stretches out movable plate 1, the movable plate 1 in the outside of measuring rod one 3 is annular array through and is inserted with measuring rod two 4, when measuring rod two 4 works, determine the ground difference of crack two sides, the both ends of measuring rod two 4 are fixed with limiting disc two 402, the bottom of movable plate 1 is correspondingly provided with movable port 101 in the position of limiting disc two 402, after limiting disc two 402 enters movable port 101, with the bottom surface of movable plate 1 flush, so that when working, the printed scale two 401 on measuring rod two 4 shows zero scale on movable plate 1.

[0027] Specifically, the movable hole 102 is through in the movable plate 1 of the top of movable port 101, and the measuring rod two 4 is movably connected in the movable hole 102. The movable plate 1 movably connects the measuring rod two 4 through the movable hole 102.

[0028] Further, the outer arc surface of arc-shaped pressing plate 2 is rotatably connected with threaded rod 202 in the center, the end, away from arc-shaped pressing plate 2, of threaded rod 202 is fixed with rotating frame 203, arc-shaped pressing plate 2 is connected with rotating frame 203 through threaded rod 202, and rotating frame 203 is rotated to drive threaded rod 202 to rotate.

[0029] Further, the threaded rod 202 is threadedly connected with a support seat 204, the bottom end of the support seat 204 is fixed on the top of the movable plate 1, and the threaded rod 202 is threadedly connected in the support seat 204 through the support seat 204.

[0030] The operation process of the embodiment is as follows: in operation, first, the movable plate 1 is arranged at the crack position to be measured in the tunnel of the subway, then the taper head 303 at the bottom end of the measuring rod one 3 is inserted into the movable plate 1 and then inserted into the crack in the tunnel until the tip of the taper head 303 touches the bottom of the crack, the depth of the corresponding crack is determined by the scale at the top of the movable plate 1, then the rotating frame 203 is rotated to drive the threaded rod 202 to rotate, the arc-shaped pressing plate 2 is driven to move by the rotation of the threaded rod 202, the arc-shaped pressing plate 2 is further driven to move until the rubber skin 201 is pressed on the measuring rod one 3, and the measuring rod one 3 does not change the position with the movable plate 1 after being pressed tightly, and the measured value is changed. Specific embodiment two

[0032] Please refer to Figure 1 , 2 , 4, 5, on the basis of the specific embodiment one, the top end of the measuring rod one 3 is fixed with a limiting disc one 302, the bottom end of the measuring rod one 3 is fixed with a taper head 303, and the circumference of the measuring rod one 3 is printed with a printed scale one 301, when the measuring rod one 3 works, the position between the measuring rod one 3 and the movable plate 1 is limited by the limiting disc one 302, and the depth of the measured crack is determined by the value of the printed scale one 301 displayed by the measuring rod one 3 on the movable plate 1.

[0033] Specifically, the circumference of the measuring rod two 4 is movably connected with a printed scale two 401, the distance between the printed scale two 401 on the circumference of the measuring rod two 4 and the bottom end is equal to the depth of the active hole 102, the limiting disc two 402 at the bottom end of the measuring rod two 4 is equal to the depth of the active hole 101, when the ground is basically flat and the two sides of the crack are not uneven, the limiting disc two 402 at the bottom end of the measuring rod two 4 enters the active hole 101 when the movable plate 1 is attached to the ground, and the flatness of the whole bottom of the movable plate 1 is maintained.

[0034] The operation process of the embodiment is as follows: when the tunnel ground cracks, the movable plate 1 is placed at the position corresponding to the crack, the conical head 303 at the bottom end of the measuring rod one 3 enters the crack to detect the depth of the crack, when the two sides of the crack are straight, the limiting disc two 402 at the bottom end of the measuring rod two 4 enters the movable opening 101 at the bottom of the movable plate 1, the bottom end contacts the ground, remains straight, and is flush with the top of the movable plate 1, the printed scale two 401 on the measuring rod two 4 displays zero scale, when the two sides of the crack have a certain difference, the movable plate 1 is pressed, the bottom of the movable plate 1 is pressed to be flush with the ground at the higher position, the limiting disc two 402 at the bottom end of the measuring rod two 4 at the lower position is supported on the ground, the printed scale two 401 on the measuring rod two 4 displayed on the movable plate 1 changes, after observation, the value is recorded, and the height difference between the two sides of the crack is determined.

[0035] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The preferred embodiments of the above disclosed application are only used to help explain the application. The preferred embodiments do not describe all the details, nor limit the application to the specific embodiments described. Obviously, according to the content of the present specification, many modifications and changes can be made. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. A subway tunnel crack depth measuring device, comprising a movable plate (1), an arc-shaped pressing plate (2), a measuring rod one (3) and a measuring rod two (4), characterized in that: The center of the movable plate (1) is vertically connected with a measuring rod one (3), the circumference of the measuring rod one (3) is movably connected with a rubber skin (201), the outer arc surface of the rubber skin (201) is fixedly connected with an arc pressing plate (2), the measuring rod one (3) is movably connected with a measuring rod two (4) in the movable plate (1) in a ring array, the two ends of the measuring rod two (4) are fixedly connected with a limiting disc two (402), the bottom of the movable plate (1) is provided with a movable port (101) corresponding to the position of the limiting disc two (402).

2. The subway tunnel crack depth measuring device according to claim 1, characterized in that: The top of the movable port (101) is movably connected with a measuring rod two (4).

3. The subway tunnel crack depth measuring device according to claim 1, characterized in that: The outer arc surface of the arc pressing plate (2) is movably connected with a threaded rod (202), one end of the threaded rod (202) away from the arc pressing plate (2) is fixedly connected with a rotating frame (203).

4. The subway tunnel crack depth measuring device according to claim 3, characterized in that: The circumference of the threaded rod (202) is screw-connected with a supporting seat (204), the bottom of the supporting seat (204) is fixedly connected with the top of the movable plate (1).

5. The subway tunnel crack depth measuring device according to claim 1, characterized in that: The top of the measuring rod one (3) is fixedly connected with a limiting disc one (302), the bottom of the measuring rod one (3) is fixedly connected with a taper head (303), the circumference of the measuring rod one (3) is printed with a printed scale one (301).

6. The subway tunnel crack depth measuring device according to claim 2, characterized in that: The circumference of the measuring rod two (4) is movably connected with a printed scale two (401), the distance between the printed scale two (401) and the bottom of the measuring rod two (4) is equal to the depth of the movable port (101), the limiting disc two (402) of the bottom of the measuring rod two (4) is equal to the depth of the movable port (101).

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