Simple earth surface crack monitoring device

Abstract

A simple earth surface crack monitoring device comprises a monitoring ruler used for measuring the width of a crack, and a first slide way is arranged in the middle of the monitoring ruler; the measuring plate is slidably connected to the first slideway; the extending assembly is arranged at the bottom of the measuring plate; the pulling mechanism drives the measuring plate to move; the positioning mechanism is slidably connected to the side wall of the monitoring ruler, and the bottom of the positioning mechanism is anchored to the ground surface. The change distance of the crack can be determined by monitoring the change of the distance between the two sliding blocks, the data relationship between the earth surface movement and the crack movement can be obtained by comparing the data with the data measured by the measuring plate, and the crack research is more comprehensive by increasing the test parameters; meanwhile, when the crack is too thin and the clamping piece cannot extend into the crack, early earth surface movement data can be measured in advance through movement of the sliding block.

Description

Technical Field

[0001] The utility model relates to the technical field of crack monitoring, and more specifically, particularly to a simple surface crack monitoring device. Background Art

[0002] Surface cracks are a macroscopic surface destruction phenomenon in which surface rock strata and soil crack under the influence of natural factors (crustal activity, water action, etc.) or human factors (pumping, irrigation, excavation, etc.), forming cracks of a certain length and width on the ground. Monitoring surface cracks can timely determine the intensity of surface activity.

[0003] The patent with announcement number CN218034889U discloses a crack monitoring device for surface displacement monitoring, including a fixed seat, a slide groove is opened inside the fixed seat, sliders are movably installed on the left and right sides of the inner cavity of the slide groove, grooves are opened on the left and right sides of the bottom end of the slider, and support rods are movably connected inside the grooves, the bottom end of the support rod is movably connected to a fixing component through a rotating shaft, a laser receiver is fixedly installed in the middle of the fixed seat, and receiving ports located inside the slide groove are installed on the left and right ends of the laser receiver, and laser transmitters are fixedly installed on the relatively close ends of the two sliders.

[0004] The device uses laser to determine the displacement distance, but it monitors the displacement of the nearby surface and cannot directly monitor changes in crack width. Errors will occur when the surface moves, and the laser structure is complex and difficult to maintain. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings, the utility model aims to provide a simple surface crack monitoring device, which can monitor the surface displacement and crack width movement simultaneously.

[0006] A simple surface crack monitoring device comprises: a monitoring ruler for measuring crack width, wherein a first slide is provided in the middle of the monitoring ruler; a measuring plate slidably connected to the first slide; an insertion component provided at the bottom of the measuring plate; a pulling mechanism for driving the measuring plate to move; and a positioning mechanism slidably connected to the side wall of the monitoring ruler, wherein the bottom of the positioning mechanism is anchored to the ground surface.

[0007] Furthermore, a slide groove is provided in the middle of the monitoring ruler, the slide groove passes through the middle of the monitoring ruler, and the first slideway is provided on both sides of the slide groove.

[0008] Furthermore, the side wall of the monitoring ruler is provided with scale lines.

[0009] Furthermore, two measuring plates are provided, and a limiting rod protrudes from a side wall of the measuring plate, and the bottom of the limiting rod is slidably connected to the first slideway.

[0010] Furthermore, the insertion assembly includes a plurality of clamping pieces and a rotating shaft, wherein the rotating shaft is disposed at the upper and lower ends of the clamping pieces, adjacent clamping pieces are connected via the rotating shaft, and the uppermost rotating shaft is rotatably connected to the bottom of the measuring plate.

[0011] Furthermore, the pulling mechanism includes a spring cavity, a tension spring and a connecting piece, the spring cavity is arranged on both sides of the monitoring ruler, the connecting piece is fixed to the measuring plate, and the tension spring connects the spring cavity and the connecting piece.

[0012] Furthermore, when the tension spring is in a normal state, the measuring plate fits the spring cavity.

[0013] Furthermore, the positioning mechanism includes a second slide, a sliding block, a fixed tube, a threaded rod, a base and an anchor nail, the second slide is fixed to the side wall of the monitoring ruler, the sliding block is slidably connected to the second slide, the fixed tube is fixed to the side wall of the sliding block, the threaded rod is rotatably connected to the fixed tube, the base is fixed to the bottom of the threaded rod, and the anchor nail passes through the base.

[0014] Furthermore, each of the second slideways is slidably connected with two sliding blocks.

[0015] Furthermore, a waterproof cover is detachably connected to the top of the monitoring ruler, and the waterproof cover covers the tension spring.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] ① By monitoring the change in the distance between the two sliding blocks, the change distance of the crack can also be determined. By comparing this data with the data measured by the measuring plate, the data relationship between surface movement and crack movement can be obtained. Increasing the test parameters can make the crack research more comprehensive. At the same time, when the crack is too small and the clamping piece cannot be extended into the crack, the early surface movement data can be measured in advance through the movement of the sliding block. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 The present invention is a schematic diagram of the overall structure of a simple surface crack monitoring device.

[0020] Figure 2 It is a schematic diagram of the extension components in a simple surface crack monitoring device.

[0021] In the figure: 1. monitoring ruler; 11. first slide; 12. scale line; 2. measuring plate; 13. slide groove; 21. limit rod; 3. insertion assembly; 31. snap-in piece; 32. rotating shaft; 4. pulling mechanism; 41. spring chamber; 42. tension spring; 43. connecting piece; 5. positioning mechanism; 51. second slide; 52. sliding block; 53. fixing tube; 54. threaded rod; 55. base; 56. anchor nail; 6. waterproof cover. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1 As shown, a simple surface crack monitoring device comprises: a monitoring ruler 1 for measuring crack width, a first slideway 11 being provided in the middle of the monitoring ruler 1; a measuring plate 2 slidably connected to the first slideway 11; an insertion component 3 provided at the bottom of the measuring plate 2; a pulling mechanism 4 for driving the measuring plate 2 to move; and a positioning mechanism 5 slidably connected to the side wall of the monitoring ruler 1, the bottom of the positioning mechanism 5 being anchored to the surface.

[0024] The monitoring ruler 1 is a rectangular block as a whole, and a rectangular slide 13 is opened in the middle of the monitoring ruler 1. The slide 13 runs through the middle of the monitoring ruler 1, and the slide 13 makes the monitoring ruler 1 hollow. The first slide 11 is arranged on both sides of the slide 13, and the first slide 11 is distributed along the long side direction of the monitoring ruler 1.

[0025] Scale lines 12 are provided on both side walls of the monitoring ruler 1. The initial positions of the measuring plate 2 and the positioning mechanism 5 are recorded before monitoring begins. During inspection, the moved scales are compared with the initial scales, thereby determining the width of the surface cracks. The crack width change data can be obtained through multiple inspections, recordings and monitoring.

[0026] There are two measuring plates 2. A limiting rod 21 protrudes from the top side wall of the measuring plate 2 in the direction of the first slide 11. A ball is provided at the bottom of the limiting rod 21. The ball is slidably connected to the first slide 11. The measuring plate 2 slides on the first slide 11 through the ball, and the ball reduces the friction between the measuring plate 2 and the first slide 11.

[0027] The insertion component 3 is below the measuring plate 2, such as Figure 2As shown, the insertion component 3 includes a plurality of snap-in pieces 31 and a rotating shaft 32. The rotating shaft 32 is arranged at the upper and lower ends of the snap-in pieces 31. Adjacent snap-in pieces 31 are connected by the rotating shaft 32. The snap-in pieces 31 are rotated by the rotating shaft 32, thereby realizing the folding and storage of the snap-in pieces 31 and the extension of their length. The uppermost rotating shaft 32 is rotatably connected to the bottom of the measuring plate 2. When crack monitoring is performed, the snap-in pieces 31 are placed into the cracks. Different cracks have different depths. By rotating different numbers of snap-in pieces 31 downward, as many snap-in pieces 31 as possible are placed into the cracks, so that the cracks and the snap-in pieces 31 fit stably.

[0028] The pulling mechanism 4 includes a spring cavity 41, a tension spring 42 and a connecting piece 43. The spring cavity 41 is arranged on both sides of the monitoring ruler 1. The spring cavity 41 is a shell with an opening at one end. The openings of the two spring cavities 41 are arranged opposite to each other. The connecting piece 43 is fixed to the top of the measuring plate 2. The tension spring 42 connects the spring cavity 41 and the connecting piece 43. When the tension spring 42 is in a normal state, the measuring plate 2 is located on both sides of the monitoring ruler 1, and the measuring plate 2 fits with the spring cavity 41. When measuring the change in crack width, the two connecting pieces 43 are pulled toward the middle of the monitoring ruler 1, and the connecting piece 43 drives the measuring plate 2 to move, and the clamping piece 31 is placed into the crack. At this time, the tension spring 42 has a backward pulling force on the connecting piece 43 and the measuring plate 2, further making the clamping piece 31 fit more closely with the inner wall of the crack. When the width of the crack changes, the clamping piece 31 moves with the crack, and the width of the crack is measured by reading the spacing between the two measuring plates 2.

[0029] The positioning mechanism 5 is used to support the monitoring ruler 1. The positioning mechanism 5 includes a second slide 51, a sliding block 52, a fixed tube 53, a threaded rod 54, a base 55 and an anchoring nail 56. The second slide 51 is in a "convex" shape. The second slide 51 is fixedly connected to the side wall of the monitoring ruler 1. After the second slide 51 is installed, it does not affect the observation of the scale line 12. The sliding block 52 is slidably connected to the second slide 51, the fixed tube 53 is fixedly connected to the side wall of the sliding block 52, the threaded rod 54 is rotatably connected to the fixed tube 53, and the threaded rod 54 can be extended and retracted relative to the fixed tube 53 by rotation. The base 55 is fixedly connected to the bottom of the threaded rod 54, and the anchoring nail 56 passes through the base 55. The anchoring nail 56 is anchored in the stratum on the surface when in use, so that the positioning mechanism 5 is fixed, and further supports the monitoring ruler 1 and other components.

[0030] Two sliding blocks 52 are slidably connected to each second slideway 51, and two second slideways 51 are provided on both sides of the monitoring ruler 1. Cracks are sometimes distributed on a slope. When monitoring cracks on a slope, the total length of the threaded rod 54 and the fixed tube 53 is changed by rotating the threaded rod 54, so as to support the monitoring ruler 1 to be placed horizontally.

[0031] After the anchor nail 56 is fixed to the ground, when the ground moves relatively, the base 55 and the anchor nail 56 will also move. At this time, the sliding block 52 on the same second slideway 51 will also move. By monitoring the change in the distance between the two sliding blocks 52, the change distance of the crack can also be determined. By comparing this data with the data measured by the measuring plate 2, the data relationship between the surface movement and the crack movement can be obtained. Increasing the test parameters makes the crack research more comprehensive. At the same time, when the crack is too small and the clamping piece 31 cannot extend into the crack, the early surface movement data can be measured in advance through the movement of the sliding block 52.

[0032] The top of the monitoring ruler 1 is detachably connected with a waterproof cover 6, which covers the tension spring 42. The waterproof cover 6 is made of a transparent material to prevent water from splashing onto the spring during monitoring, causing the spring to rust and weaken its performance.

[0033] The device is made by assembling mechanical parts, and the manufacturing process and use method are simple, and it is convenient for maintenance and inspection, and can be used for a long time.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A simple surface crack monitoring device, characterized in that: include: A monitoring ruler (1) for measuring crack width, wherein a first slideway (11) is provided in the middle of the monitoring ruler (1); a measuring plate (2) slidably connected to the first slideway (11); An insertion component (3) arranged at the bottom of the measuring plate (2); a pulling mechanism (4) for driving the measuring plate (2) to move; and A positioning mechanism (5) is slidably connected to the side wall of the monitoring ruler (1), and the bottom of the positioning mechanism (5) is anchored to the ground surface.

2. A simple surface crack monitoring device according to claim 1, characterized in that: A slide groove (13) is provided in the middle of the monitoring ruler (1), the slide groove (13) passes through the middle of the monitoring ruler (1), and the first slideway (11) is arranged on both sides of the slide groove (13).

3. A simple surface crack monitoring device according to claim 2, characterized in that: The side wall of the monitoring ruler (1) is provided with scale lines (12).

4. A simple surface crack monitoring device according to claim 3, characterized in that: Two measuring plates (2) are provided, and a limiting rod (21) protrudes from a side wall of the measuring plate (2), and the bottom of the limiting rod (21) is slidably connected to the first slideway (11).

5. A simple surface crack monitoring device according to claim 4, characterized in that: The insertion assembly (3) comprises a plurality of clamping pieces (31) and a rotating shaft (32). The rotating shaft (32) is arranged at the upper and lower ends of the clamping pieces (31). Adjacent clamping pieces (31) are connected via the rotating shaft (32). The uppermost rotating shaft (32) is rotatably connected to the bottom of the measuring plate (2).

6. A simple surface crack monitoring device according to claim 5, characterized in that: The pulling mechanism (4) comprises a spring cavity (41), a tension spring (42) and a connecting piece (43); the spring cavity (41) is arranged on both sides of the monitoring ruler (1); the connecting piece (43) is fixed to the measuring plate (2); and the tension spring (42) connects the spring cavity (41) and the connecting piece (43).

7. A simple surface crack monitoring device according to claim 6, characterized in that: When the tension spring (42) is in a normal state, the measuring plate (2) fits the spring cavity (41).

8. A simple surface crack monitoring device according to claim 7, characterized in that: The positioning mechanism (5) comprises a second slideway (51), a sliding block (52), a fixed tube (53), a threaded rod (54), a base (55) and an anchoring nail (56); the second slideway (51) is fixedly connected to the side wall of the monitoring ruler (1); the sliding block (52) is slidably connected to the second slideway (51); the fixed tube (53) is fixedly connected to the side wall of the sliding block (52); the threaded rod (54) is rotatably connected to the fixed tube (53); the base (55) is fixedly connected to the bottom of the threaded rod (54); and the anchoring nail (56) passes through the base (55).

9. A simple surface crack monitoring device according to claim 8, characterized in that: Two sliding blocks (52) are slidably connected to each of the second slideways (51).

10. A simple surface crack monitoring device according to claim 9, characterized in that: The top of the monitoring ruler (1) is detachably connected to a waterproof cover (6), and the waterproof cover (6) covers the tension spring (42).

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