Subway tunnel crack measuring device

Abstract

The utility model discloses a subway tunnel crack measuring device, and relates to the technical field of subway tunnel crack detection. The device comprises fixed blocks, a rotating assembly, a movable strip and a measuring scale, a fixed strip is fixed in the center of the top of each fixed block, the rotating assembly is arranged above the two fixed blocks, the rotating assembly comprises two threaded rods with opposite thread directions, and the two threaded rods are respectively connected in the two fixed strips in a penetrating and threaded mode. A measuring scale is arranged on one sides of the two fixing blocks jointly, two sliding plates are movably connected to the measuring scale, a movable strip is movably connected into the two fixing blocks jointly, and inserting rods are fixed to the middles of the edges, close to each other, of the bottoms of the two fixing blocks. According to the utility model, the fixed block, the rotating assembly, the movable strip and the measuring scale are arranged, so that the problems that a subway tunnel crack measuring device is large in measuring width and large in crack error, and crack measuring width data are inconvenient to observe and determine are solved.

Description

TECHNICAL FIELD

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

[0002] Subway tunnel crack is a common problem, which can affect the structural safety and operational safety of the tunnel. The crack may be caused by various factors, including uneven stress of the tunnel structure, problems in the construction process, influence of external load, action of groundwater, etc. The crack can cause damage to the tunnel structure, thereby affecting the carrying capacity and stability of the tunnel. In severe cases, it may cause collapse accidents, causing casualties and property losses, thereby affecting the carrying capacity and stability of the tunnel. In severe cases, it may cause collapse accidents, causing casualties and property losses, and the existence of cracks can cause water seepage problems inside the tunnel. Water seepage can cause deterioration of geological conditions, thereby exacerbating the development of cracks and damage to the tunnel structure. In addition, water seepage can also cause ground subsidence, affecting the operational safety of the tunnel, so after observing the crack, the corresponding data of the crack needs to be measured in time to determine the repair scheme of the crack, etc. However, it still has the following disadvantages in actual use:

[0003] 1. When the subway tunnel crack measuring device is working, the width of the subway tunnel crack is directly measured. When measuring the width of the crack, the measuring scale is not easy to align with the two edges of the crack, and the measurement error is easy to cause by skewing, and the measurement accuracy of the crack with large width is not high;

[0004] 2. When the subway tunnel crack measuring device is working, the measured structure is directly attached to the surface corresponding to the crack, and the corresponding crack width data is measured. During the measurement of the tunnel ground crack, the operator needs to bend down to observe, and it is not easy to observe and determine the crack width data. Utility model content

[0005] The utility model aims at providing a subway tunnel crack measuring device, which solves the problems of large measurement error of the subway tunnel crack measuring device for measuring cracks with large width, and inconvenient observation and determination of crack measurement width data by setting the fixing block, rotating assembly, movable strip and scale.

[0006] To solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a subway tunnel crack measuring device, including fixed block, rotating component, movable strip and scale, the top central fixed of fixed block has fixed strip, the top of two fixed blocks is commonly provided with rotating component, the rotating component includes two screw threads opposite screw rod, two screw rod is respectively through screw joint in two fixed strips, the side of two fixed blocks is commonly provided with scale, two sliding plates are movably connected on the scale, two movable strips are movably connected in two fixed blocks, the edge of two fixed blocks bottom mutual approach all fixed with the plug -in rod in the middle, when, the plug -in rod of fixed block connection is adjusted in the position, inserts the crack, until the plug -in rod restricts good position, determines the width of crack, when the screw rod of rotating component is rotated, changes the position between two fixed blocks, measures the gap between two fixed blocks and the interval between two positioning strips through the scale simultaneously, determines the width of the crack under the corresponding test state.

[0008] Further, the side of two fixed blocks close to scale all is fixed with positioning strip, the interval between two positioning strips mutually far away one side is equal to the farthest distance of two plug -in rod top end face, and the width of crack is determined when fixed block is tested through positioning strip through plug -in rod.

[0009] Further, the screw hole is through the center line along the length direction and is formed in the fixed strip, and the two screw rods are respectively screwed in the screw holes in the two fixed strips.

[0010] Further, the rotating component further includes a rotating block and a limiting disc, the rotating block is fixed to the end of the two screw rods close to each other, and the limiting disc is fixed to the end of the two screw rods far away from each other, the rotating block is rotated to drive the screw rod to rotate, and the position between the two fixed blocks is changed through the rotation of the screw rod.

[0011] Further, the plug-in interface is through the center and is formed in the two fixed blocks, and the movable strip is inserted into the plug-in interfaces in the two fixed blocks.

[0012] Further, the limiting disc two is fixed to the both ends of the scale, the two positioning strips are arranged between the two sliding plates, and the side of the two positioning strips far away from each other respectively contacts with the side of the two sliding plates close to each other, the scale is limited by the limiting disc two to prevent the sliding plate from slipping off the scale.

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

[0014] 1. The utility model discloses a fixed block, rotation subassembly and movable strip are set up, solved the subway tunnel crack measuring device measurement width bigger crack error bigger problem, when the width of crack is bigger, first rotate the swivel block, drive two threaded rods to rotate, through the threaded rod and fixed strip screw thread connection, drive two fixed blocks to approach each other, until two insertion rods periphery side away from each other's high line distance is less than the width of crack after, the insertion rod is inserted into the tunnel crack, immediately rotate the swivel block again, drive two fixed blocks to move away from each other, until two insertion rods move to and the inner wall of crack mutually contact, and after limiting fastening, the interval between two positioning strips mutually far apart one side surface is equal to the width of crack at this moment, when working, the subway tunnel crack measuring device measures the width bigger crack, can conveniently determine the two edges of crack, reduces the error of measurement.

[0015] 2. The utility model discloses a fixed block, rotation subassembly and scale are set up, solved the observation and determine crack measurement width data not enough convenient problem, after the fixed block determines the width of crack through the insertion rod, two fixed blocks are removed to the position convenient for observation, and the scale is set up at two positioning strips top, two sliding plates are respectively with two limit boards two mutually contact, directly slide two sliding plates on the scale, two sliding plates are slid to contact two positioning strips, after taking down the scale, through the reading difference of two sliding plates mutually close one side face corresponding scale, determine the crack width, so that two fixed blocks can determine the width distance after measuring the crack width, leave the measuring position, keep the measuring state and measure, and the observation and determine crack measurement width data are more convenient. ACCURACY

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, 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 comes, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0017] Figure 1 It is a subway tunnel crack measuring device assembly structure perspective drawing;

[0018] Figure 2 It is a fixed block structure perspective drawing;

[0019] Figure 3 It is a rotation subassembly structure perspective drawing;

[0020] Figure 4 It is movable strip structure perspective drawing;

[0021] Figure 5 It is scale structure perspective drawing;

[0022] Figure 6A front view of a subway tunnel crack measuring device.

[0023] Reference signs:

[0024] 1, fixed block; 101, fixed bar; 102, screw hole; 103, plug-in interface; 104, plug-in rod; 105, positioning bar; 2, rotating assembly; 201, rotating block; 202, threaded rod; 203, limiting disc; 3, movable bar; 301, limiting plate one; 4, measuring scale; 401, sliding plate; 402, limiting plate two. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Embodiment one

[0027] Please refer to Figures 1-6 The utility model discloses a subway tunnel crack measuring device, including fixed block 1, rotating assembly 2, movable bar 3 and measuring scale 4, the top central fixed bar 101 of fixed block 1, fixed block 1 carries out the work, the plug-in rod 104 of measurement is connected on it, two fixed block 1 are connected rotating assembly 2 through fixed bar 101, the upper side of two fixed block 1 is commonly provided with rotating assembly 2, and rotating assembly 2 includes two screw threads opposite screw rod 202, two screw rods 202 are respectively through screw connection in two fixed bar 101, so that when screw rod 202 rotates, the position between two fixed block 1 is adjusted, and the upper side of two fixed block 1 is commonly provided with measuring scale 4, when working through measuring scale 4, the width of corresponding crack is measured, and two sliding plates 401 are movably connected on measuring scale 4, through the sliding of sliding plate 401, until the distance between two sliding plates 401 is equal to the width of corresponding crack, then the width of crack is determined through the scale difference on measuring scale 4, and the movable bar 3 is movably connected in two fixed block 1, and the movable bar 3 makes two fixed block 1 only linearly slide between two fixed block 1, and the plug-in rod 104 is fixed in the middle of the edge of the bottom of two fixed block 1 close to each other, and the plug-in rod 104 is arranged in the crack of subway tunnel, and the width of crack is measured.

[0028] Specifically, the two fixed blocks 1 are fixed with positioning strips 105 near one side of the scale 4, the distance between the mutually far apart side surfaces of the two positioning strips 105 is equal to the distance between the top surfaces of the two insertion rods 104, when the fixed blocks 1 are working, the distance between the mutually far apart side surfaces of the two positioning strips 105 is equal to the width of the crack to be measured, so that the crack width can be measured conveniently.

[0029] Further, screw holes 102 are formed through the center lines along the length direction of the fixed strips 101, two threaded rods 202 are respectively screwed into the screw holes 102 in the fixed strips 101, and the fixed strips 101 are screwed with the threaded rods 202 through the screw holes 102.

[0030] Further, the rotating assembly 2 further comprises a rotating block 201 and a limiting disc 203, the two mutually far apart ends of the two threaded rods 202 are fixed with the rotating block 201, and the two mutually far apart ends of the two threaded rods 202 are fixed with the limiting disc 203, when the rotating block 201 is rotated, the threaded rods 202 are driven to rotate, and the positions between the two fixed strips 101 are limited by the limiting disc 203.

[0031] The operation process of the embodiment is as follows: when the crack width is large, first, the rotating block 201 is rotated to drive the two threaded rods 202 to rotate, the two fixed blocks 1 are driven to approach each other through the threaded connection between the threaded rods 202 and the fixed strips 101, until the distance between the mutually far apart high lines of the two insertion rods 104 is smaller than the crack width, then the insertion rods 104 are inserted into the tunnel crack, and then the rotating block 201 is rotated again to drive the two fixed blocks 1 to move away from each other, until the two insertion rods 104 are in contact with the inner walls of the crack and are limited and fastened, at this time, the distance between the mutually far apart side surfaces of the two positioning strips 105 is equal to the crack width, when the crack width is small, the rotating block 201 is directly rotated to adjust the positions between the two fixed blocks 1, the two mutually approaching edges of the fixed block 1 far away from the positioning strips 105 are aligned with the crack, until the distance between the two fixed blocks 1 is equal to the crack width, and then the sliding plates 401 on the scale 4 are slid to the distance between the two sliding plates 401 is equal to the distance between the two fixed blocks 1, so that the crack width is determined. Specific embodiment two

[0033] Please refer to Figure 1 , 2、5、6, on the basis of the first embodiment, the two fixed blocks 1 are centrally provided with insertion interfaces 103, the two insertion interfaces 103 in the two fixed blocks 1 are jointly inserted with the movable strips 3, the two ends of the movable strips 3 are fixed with limit plates one 301, the fixed blocks 1 are movably connected with the movable strips 3 through the insertion interfaces 103, so that the distance between the two fixed blocks 1 can only be changed in a straight line, the width of the crack is conveniently detected, and the position change of the movable strips 3 from the two fixed blocks 1 is prevented by the limit plates one 301.

[0034] Specifically, the two ends of the ruler 4 are fixed with limit plates two 402, the two positioning strips 105 are arranged between the two sliding plates 401, and the mutually faraway sides of the two positioning strips 105 are in contact with the mutually close sides of the two sliding plates 401, respectively, the sliding plates 401 are prevented from sliding off the ruler 4 by the limit plates two 402, and the distance between the mutually faraway side faces of the two positioning strips 105 is equal to the width of the measured crack (such as the distance shown by the dotted line). Figure 6

[0035] The operation process of the embodiment is as follows: when working, the two fixed blocks 1 are moved to a position convenient for observation after the width of the crack is determined by the insertion rod 104, the ruler 4 is arranged on the top of the two positioning strips 105, the two sliding plates 401 are in contact with the two limit plates two 402, respectively, the two sliding plates 401 on the ruler 4 are directly slid, the two sliding plates 401 are slid to contact the two positioning strips 105, after the ruler 4 is removed, the reading difference of the corresponding scales on the mutually close side faces of the two sliding plates 401 is used to determine the width of the crack, when the width of the crack is directly measured by the distance between the two fixed blocks 1, after the two fixed blocks 1 are arranged at a position convenient for observation, the sliding plate 401 is directly slid, and the ruler 4 is arranged on one side of the two fixed blocks 1 until the distance between the two fixed blocks 1 is equal to the distance between the two sliding plates 401, and the reading of the corresponding scales on the mutually close side faces of the two sliding plates 401 is used to determine the width of the crack.

[0036] 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 combination with the embodiment or example are contained 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 mean 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.

[0037] ​The preferred embodiments disclosed above are only used to help describe the utility model. The preferred embodiments do not describe all the details and do not limit the utility model to the specific embodiments. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A subway tunnel crack measuring device, comprising a fixed block (1), a rotating assembly (2), a movable strip (3) and a scale (4), characterized in that: The top of the fixed block (1) is fixed with a fixed strip (101), the upper part of the two fixed blocks (1) is provided with a rotating assembly (2) in common, the rotating assembly (2) comprises two threaded rods (202) with opposite screw directions, the two threaded rods (202) are respectively threaded connected in the two fixed strips (101), one side of the two fixed blocks (1) is provided with a scale (4) in common, the scale (4) is movably connected with two sliding plates (401), the two fixed blocks (1) are movably connected with a movable strip (3) in common, and the bottom edges of the two fixed blocks (1) are fixed with plug rods (104) in common.

2. The subway tunnel crack measuring device according to claim 1, characterized in that: The side of the two fixed blocks (1) close to the scale (4) is fixed with a positioning strip (105), and the distance between the two positioning strips (105) away from each other is equal to the farthest distance of the top end surfaces of the two plug rods (104).

3. The subway tunnel crack measuring device according to claim 1, characterized in that: The fixed strip (101) is provided with a threaded hole (102) penetrating along the center line in the length direction, and the two threaded rods (202) are respectively threaded connected in the threaded holes (102) of the two fixed strips (101).

4. The subway tunnel crack measuring device according to claim 1, characterized in that: The rotating assembly (2) further comprises a rotating block (201) and a limiting disc (203), one end of the two threaded rods (202) close to each other is fixed with a rotating block (201) in common, and the other end of the two threaded rods (202) away from each other is fixed with a limiting disc (203).

5. The subway tunnel crack measuring device according to claim 1, characterized in that: The center of the two fixed blocks (1) is provided with a plug-in port (103) penetrating, the plug-in port (103) in the two fixed blocks (1) is inserted with a movable strip (3) in common, and the two ends of the movable strip (3) are fixed with limiting plates one (301).

6. The subway tunnel crack measuring device according to claim 2, characterized in that: The both ends of the scale (4) are fixed with limiting plates two (402), the two positioning strips (105) are arranged between the two sliding plates (401), and the side of the two positioning strips (105) away from each other is in contact with the side of the two sliding plates (401) close to each other.

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