Road crack detection device and road detection equipment

Abstract

The utility model provides a road crack detection device and road detection equipment, and belongs to the road detection field, the road crack detection device comprises a probe body, the probe body comprises a fixed pipe and a feeler lever, the fixed pipe and the feeler lever can be freely bent, the fixed pipe can be shaped, the fixed pipe is coaxially sleeved on the periphery of the feeler lever to support the feeler lever, and the feeler lever is fixed on the probe body. The probe rod can be arranged to be a steel wire rope and can elastically move in the axial direction of the fixing pipe, and the fixing pipe can be inserted and fixed into the crack. Compared with the prior art, the probe can adapt to bending of a crack through deformation of the probe body, the detection depth is improved, the fixing pipe can guide contraction of the probe rod, the probe rod is prevented from being excessively bent and deformed in the process of depth detection in the crack, and the detection precision of the crack depth is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to road detection field, more specifically, it relates to a road crack detection device, simultaneously, the utility model also relates to a road detection equipment. BACKGROUND

[0002] Pavement disease, whether it is cement or asphalt pavement, after a period of use, various damages, deformations and other defects will appear. Early common diseases are: cracks, pits, ruts, loose, subsidence, bridge head and top of culvert bump, surface damage, etc. Among them, cracks are one of the most common, most likely to occur and earliest diseases in various damages of pavement, which accompanies the entire use period of the road and increases with the growth of road age. The appearance of cracks in pavement not only affects the appearance and driving comfort, but also easily expands to cause structural damage to the pavement, shortening the service life of the pavement. Therefore, when cracks appear on the pavement, they should be sealed and repaired in time, otherwise rainwater and other debris will enter the surface layer structure and roadbed along the cracks, causing the load-bearing capacity of the pavement to decrease and accelerating the local or sheet damage of the pavement.

[0003] Among the types of cracks that appear on asphalt pavement and concrete pavement, they can be divided into transverse cracks, longitudinal cracks and network cracks from the cause. After cracks appear on the asphalt pavement, water infiltrates the pavement structure, reducing the load-bearing capacity of the pavement. On the one hand, water reduces the adhesion of asphalt, resulting in a decrease in the strength and stiffness of asphalt mixture, and causing asphalt to peel off the surface of the aggregate; on the other hand, in the rainy season, free water in the pavement cracks will generate a considerable dynamic water pressure under the action of vehicle load, and the pressure water will continuously erode the fine materials in the base material, and the fine material slurry will be gradually squeezed out of the cracks, forming a pumping slurry at the asphalt surface crack, and once the fine material slurry is pumped out, the asphalt surface will sink along the cracks, causing new cracks on both sides of the cracks, leading to the breaking of both sides of the pavement cracks and gradually causing large-area damage to the pavement.

[0004] After cracks appear on the cement pavement, rainwater can enter the pavement base or soil layer through the cracks, and when vehicles pass through the area where the cracks are located, rainwater and base slurry soaked by rainwater will be squeezed out of the pavement under the action of vacuum suction behind the vehicle or tire, forming a void under the slab, and the cement concrete pavement will gradually form large-area cracking and breaking.

[0005] Before repairing the road cracks, the current road crack condition needs to be detected. Generally, the existing technical means generally adopts manual measurement or image recognition to detect the appearance of the cracks. However, the existing image recognition can only detect the width of the cracks, and when detecting the depth of the cracks, the existing manual measurement method also lacks suitable measurement tools, so that the measurement result cannot guide the construction, and part of the road conditions even need to be re-repaired after construction, which causes the road repair cost to be too high, and improvement is needed. Practical new type content

[0006] The utility model discloses a kind of road crack detection devices, to solve the technical problem that the depth of the road crack cannot be accurately measured by the existing road detection means.

[0007] To achieve the above object, the technical scheme adopted by the utility model is as follows: a kind of road crack detection device is provided, comprising:

[0008] Probe body, the probe body includes fixed tube and probe rod, the fixed tube and the probe rod can be freely bent and the fixed tube can be shaped, the fixed tube is coaxially covered on the outer periphery of probe rod to support the probe rod, the probe rod can be set as steel wire rope, and can be elastically moved along the axial direction of the fixed tube, and the fixed tube can be inserted and fixed in the crack.

[0009] In a possible implementation manner, the fixed tube includes a first spring and a second spring, the first spring is covered on the outer periphery of the second spring, the inner wall of the first spring is formed with a clamping protrusion, and the clamping protrusion is clamped in the axial gap of the second spring.

[0010] In a possible implementation manner, the outer periphery of the fixed tube is covered with a rubber sleeve.

[0011] In a possible implementation manner, the probe body further includes a positioning assembly arranged in the fixed tube, the positioning assembly includes an elastic claw and a connecting rope, the elastic claw is arranged at one end of the fixed tube, the connecting rope is coaxially arranged in the fixed tube, one end of the connecting rope is connected with the elastic claw, and the other end protrudes from the port of the other end of the fixed tube, the elastic claw includes a plurality of elastic support pieces uniformly arranged around the axis of the connecting rope, each elastic support piece is configured to have a pre-tightening force away from each other, each elastic support piece has a first state of being gathered in the fixed tube and a second state of being away from each other and protruding from the fixed tube, and each elastic support piece in the second state can lock the fixed tube in the crack.

[0012] In a possible implementation, the fixed tube is provided with a plurality of positioning rings for positioning the probe rod, and the axis of each positioning ring is parallel to the axis of the fixed tube.

[0013] In a possible implementation, the connecting rope is internally provided with a cylindrical cavity coaxial with the connecting rope, and the probe rod is arranged in the cylindrical cavity.

[0014] In a possible implementation, the probe body further comprises a supporting spring arranged at one end of the connecting rope away from the elastic supporting sheet, the supporting spring is sleeved on the outer periphery of the connecting rope, one end of the supporting spring is connected with the connecting rope, the other end is connected with the fixed tube, and the supporting spring is arranged to have a pre-tightening force capable of retracting the elastic supporting sheet into the fixed tube.

[0015] In a possible implementation, the probe body further comprises a pull rod arranged at the end of the fixed tube adjacent to the supporting spring, and the pull rod is perpendicular to the axis of the fixed tube, and a supporting sleeve having one end telescopically clamped in the fixed tube and the other end provided with a pressing plate connected with the connecting rope, the pressing plate is provided with an insertion hole, the probe rod is inserted into the fixed tube through the insertion hole, the plate surface of the pressing plate is perpendicular to the axis of the fixed tube, the supporting spring is sleeved on the outer periphery of the supporting sleeve, one end of the supporting spring is connected with the connecting rope through the pressing plate, and the other end is connected with the fixed tube, and as the pressing plate moves along the axis of the fixed tube, the supporting spring expands or contracts along its own axis.

[0016] Compared with the prior art, the road crack detection device has the following beneficial effects: in the process of drilling into the crack, the fixed tube can adapt to the bending of the crack through its own deformation, thereby improving the penetration depth of the fixed tube in the crack, and at the same time, the fixed tube can support the axial movement of the internal probe rod, prevent the probe rod from being axially retracted during the penetration into the crack, and make the extension length of the probe rod in the crack as a reference basis for the crack depth, so that the utility model can use the thin diameter and the non-axial contraction characteristics of the steel wire rope to accurately detect the crack depth, and solve the technical problem that the existing detection tool cannot accurately detect the crack depth.

[0017] Another object of the utility model is to provide a road detection equipment comprising the road crack detection device.

[0018] Compared with the prior art, the road detection equipment has all the advantages of the road crack detection device described above, and will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort. In the drawings:

[0020] Fig. 1 The overall structure schematic diagram of the road crack detection device provided by the present application is shown in the figure.

[0021] Fig. 2 The schematic diagram of the positional relationship of the first spring and the second spring in the fixed tube is shown in the figure.

[0022] Fig. 3 The partial schematic diagram of the fixed tube in the present application is shown in the figure.

[0023] Fig. 4 The internal structure schematic diagram of the road crack detection device in the present application is shown in the figure.

[0024] In the figure:

[0025] 1, probe body; 11, fixed tube; 111, first spring; 1111, clamping protrusion; 112, second spring; 12, probe rod; 13, positioning assembly; 131, elastic clamping jaw; 1311, elastic supporting piece; 132, connecting rope; 133, supporting spring; 14, pull rod; 15, supporting sleeve; 151, pressing plate. DETAILED DESCRIPTION

[0026] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0027] In the description of the present application, it should be noted that if the terms indicating the orientation or position relationship such as "upper", "lower", "inner", "back" appear, they are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation on the present application.

[0028] In addition, in the description of the present application, unless otherwise explicitly limited, the terms "mounting", "connecting", "connection", and "connecting member" should be understood in a broad sense. For example, the connection can be fixed connection, or detachable connection, or integral connection; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium, or the internal connection of two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood in combination with the specific circumstances.

[0029] In order to make the technical problems, technical solutions and beneficial effects of the utility model clearer, the utility model will be described in further detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0030] Please refer to Figs. 1 to 4 , the road crack detection device provided by the utility model will be described. The road crack detection device comprises a probe body 1, the probe body 1 comprises a fixed tube 11 and a probe rod 12, the fixed tube 11 and the probe rod 12 can be freely bent, and the fixed tube 11 can be shaped, the fixed tube 11 is coaxially sleeved on the outer periphery of the probe rod 12 to support the probe rod 12, the probe rod 12 can be set as a steel wire rope and can be elastically moved along the axial direction of the fixed tube 11, and the fixed tube 11 can be inserted and fixed in a crack.

[0031] Compared with the prior art, in the embodiment, the fixed tube 11 can adapt to the bending of the crack by its own deformation during drilling into the crack, and the insertion depth of the fixed tube 11 in the crack is improved, at the same time, the fixed tube 11 can support the axial movement of the internal probe rod 12, prevent the probe rod 12 from being axially contracted during the insertion into the crack, and make the extension length of the probe rod 12 in the crack serve as a reference basis for the crack depth, so that the utility model can use the thin diameter and the non-axial contraction characteristics of the steel wire rope to accurately detect the crack depth, and solve the technical problem that the existing detection tool cannot accurately detect the crack depth.

[0032] It should be noted that in the embodiment, the fixed tube 11 with self-shaping capability can be set as a plastic tube with metal wires embedded in the tube wall, the plastic tube can be freely bent, and the metal wires embedded in the tube wall can support the plastic tube, so that the bent plastic tube maintains a certain shape, thereby supporting the probe rod 12 of the steel wire rope material inside, at the same time, the fixed tube 11 can be inserted into the crack by its own bending and deformation, so that the fixed tube 11 is firmly inserted into the crack, and the shaking of the fixed tube 11 is not too violent during the extension and contraction of the probe rod 12 in the fixed tube 11; in addition, preferably, the outer diameter of the fixed tube 11 gradually decreases along the up-down direction, so that the shape of the fixed tube 11 is more matched with the crack.

[0033] Based on the above embodiment, for the fixed tube 11, it includes the first spring 111 and the second spring 112, the first spring 111 is sleeved on the outer periphery of the second spring 112, the inner wall of the first spring 111 is formed with the clamping protrusion 1111, the clamping protrusion 1111 is clamped in the axial gap of the second spring 112, in this way, the fixed tube 11 composed of the springs is convenient to bend and deform, and in the process of bending the fixed tube 11, the clamping protrusion 1111 is pressed against the second spring 112 due to the pre-tightening force between the two springs, and the relative stability of the positions between the two is maintained in the bending process due to the friction force, forming a stable support for the probe rod 12 in the fixed tube 11. In this embodiment, the bending of the fixed tube 11 is gradual, there is no bending dead angle, and the passing of the probe rod 12 at the internal bending position is more smooth.

[0034] A feasible implementation is proposed, specifically, the outer periphery of the fixed tube 11 is covered with a rubber sleeve to prevent particles such as stones on the road from being clamped in the fixed tube 11, making the bending of the fixed tube 11 more smooth, and solving the technical problem that the pipe wall is scratched by particles such as stones when the fixed tube 11 is inserted into the gap.

[0035] Based on the above embodiment, a feasible implementation is proposed, the probe body 1 further includes a positioning assembly 13 arranged in the fixed tube 11, the positioning assembly 13 includes an elastic claw 131 and a connecting rope 132, the elastic claw 131 is arranged at one end of the fixed tube 11, the connecting rope 132 is coaxially arranged in the fixed tube 11, one end of the connecting rope 132 is connected with the elastic claw 131, and the other end protrudes from the port of the other end of the fixed tube 11. The elastic claw 131 includes a plurality of elastic support pieces uniformly arranged around the axis of the connecting rope 132, each elastic support piece is configured to have a pre-tightening force away from each other, each elastic support piece has a first state of being gathered together inside the fixed tube 11, and a second state of being away from each other and protruding out of the fixed tube 11. In the second state, each elastic support piece can lock the fixed tube 11 in the crack, so as to lock the fixed tube 11 in the crack through each elastic support piece, and prevent the fixed tube 11 from being deviated due to the stretching and bending of the probe rod 12 in the process of inserting the probe rod 12 into the crack;

[0036] Furthermore, in this embodiment, by pulling the connecting rope 132, the elastic claw 131 can be retracted in the fixed tube 11 in the process of inserting the fixed tube 11 into the crack, and after the fixed tube 11 is inserted in place, the connecting rope 132 can be released to make the elastic claw 131 abut against the inner wall of the crack, so as to connect the fixed tube 11 in the crack, thereby providing support and guidance for the stretching of the probe rod 12.

[0037] In an embodiment, a plurality of positioning rings are arranged in the fixed tube 11 for positioning the probe rod 12, and the axes of the positioning rings are parallel to the axis of the fixed tube 11, so as to position the probe rod 12 and prevent the probe rod 12 from being deformed by being curled in the fixed tube.

[0038] In an embodiment, the connecting rope 132 is provided with a cylindrical cavity coaxial with the connecting rope 132, and the probe rod 12 is arranged in the cylindrical cavity, so as to guide and fix the probe rod 12 through the connecting rope 132. In addition, the probe rod 12 is arranged in the connecting rope 132, so as to make full use of the internal space of the fixed tube 11 and make the space arrangement of the whole probe body 1 more reasonable.

[0039] Based on the above embodiment, in an embodiment, the probe body 1 further comprises a supporting spring 133 arranged at the end of the connecting rope 132 away from the elastic supporting sheet, the supporting spring 133 is sleeved on the outer periphery of the connecting rope 132, one end of the supporting spring 133 is connected with the connecting rope 132, and the other end is connected with the fixed tube 11. The supporting spring 133 is provided with a pre-tightening force for retracting the elastic supporting sheet into the fixed tube 11, so that the supporting spring 133 and the elastic supporting sheet have an antagonistic effect. When the elastic supporting sheet is fully expanded, the resultant force of the elastic supporting sheet on the connecting rope 132 is greater than the pre-tightening force of the supporting spring 133, and when the elastic supporting sheet is retracted into the fixed tube 11, the resultant force of the elastic supporting sheet on the connecting rope 132 is less than the pre-tightening force of the supporting spring 133, so that the elastic supporting sheet can be popped out or retracted into the fixed tube 11 according to the use requirement.

[0040] A feasible implementation is provided, the probe body 1 further comprises a pull rod 14 and a support sleeve 15, the pull rod 14 is arranged at the end of the fixed tube 11 adjacent to the supporting spring 133, and the pull rod 14 is perpendicular to the axial direction of the fixed tube 11, one end of the support sleeve 15 is telescopically connected in the fixed tube 11, and the other end is provided with a pressing plate 151 connected with the connecting rope 132, the pressing plate 151 is provided with a plug-in hole, the probe rod 12 is inserted into the fixed tube 11 through the plug-in hole, the plate surface of the pressing plate 151 is perpendicular to the axial direction of the fixed tube 11, the supporting spring 133 is sleeved on the outer periphery of the support sleeve 15, and one end of the supporting spring 133 is connected with the connecting rope 132 through the pressing plate 151, and the other end is connected with the fixed tube 11, along with the movement of the pressing plate 151 along the axial direction of the fixed tube 11, the supporting spring 133 is retracted in the fixed tube 11 under the support of the supporting spring 133, when the pressing plate is pressed, the elastic supporting piece pulls the connecting rope 132 by using the elastic force of the elastic supporting piece, at this time, the elastic supporting piece is not retracted in the fixed tube 11, and each elastic supporting piece can generate a resultant force of pulling the connecting rope 132, so that the supporting spring 133 is kept compressed, when the fixed tube 11 needs to be pulled out of the crack, the pressing plate 151 can be pulled outwards, the pressing plate 151 can be retracted in the fixed tube 11 by cooperating with the supporting spring 133 away from the fixed tube 11, at this time, the resultant force of each elastic supporting piece is insufficient to make the supporting spring 133 contract, so that the elastic supporting piece is always kept in the fixed tube 11, and the fixed tube 11 in this state is convenient to bend and store.

[0041] Based on the same inventive concept, the utility model further provides a road detection equipment, the road detection equipment comprises the road crack detection device.

[0042] Compared with the prior art, the road detection equipment in the utility model has all the advantages of the road crack detection device, which will not be repeated here.

[0043] The above only describes preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A road crack detection device, characterized in that: include: A probe body (1) includes a fixed tube (11) and a probe rod (12); the fixed tube (11) and the probe rod (12) are both capable of bending freely and the fixed tube (11) can be shaped; the fixed tube (11) is coaxially sleeved on the outer periphery of the probe rod (12) to support the probe rod (12); the probe rod (12) is woven from multiple strands of steel wire, and the probe rod (12) can extend from the fixed tube (11); the fixed tube (11) can be inserted and fixed in a crack.

2. The road crack detection device according to claim 1, characterized in that: The fixing tube (11) comprises a first spring (111) and a second spring (112), wherein the first spring (111) is sleeved on the outer periphery of the second spring (112), and a clamping protrusion (1111) is formed on the inner wall of the first spring (111), wherein the clamping protrusion (1111) is clamped in the axial gap of the second spring (112), and the clamping protrusion (1111) is always in close contact with the second spring (112).

3. The road crack detection device according to claim 1, characterized in that: The outer periphery of the fixing tube (11) is covered with a rubber sleeve.

4. The road crack detection device according to claim 1, wherein: The probe body (1) further comprises a positioning assembly (13) arranged in the fixing tube (11), the positioning assembly (13) comprising an elastic claw (131) and a connecting rope (132), the elastic claw (131) being arranged at one end of the fixing tube (11), the connecting rope (132) being coaxially arranged in the fixing tube (11), and one end of the connecting rope (132) being connected to the elastic claw (131), and the other end being protruding from a port at the other end of the fixing tube (11); the elastic claw (131) being arranged at one end of the fixing tube (11), and the connecting rope (132) being coaxially arranged in the fixing tube (11), The supporting claw (131) includes a plurality of elastic support pieces (1311) uniformly arranged around the axis of the connecting rope (132), each of the elastic support pieces (1311) being configured to have a pre-tightening force that moves away from each other, each of the elastic support pieces (1311) having a first state in which they gather together and are located inside the fixing tube (11), and a second state in which they move away from each other and protrude from the fixing tube (11), and each of the elastic support pieces (1311) in the second state can lock the fixing tube (11) in the crack.

5. The road crack detection device according to claim 1, wherein: A plurality of positioning rings are provided in the fixed tube (11), each positioning ring is evenly arranged along the axis of the fixed tube (11), and the axis of each positioning ring is parallel to the axis of the fixed tube (11), and each positioning ring can guide the movement of the probe rod (12).

6. The road crack detection device according to claim 4, characterized in that: A cylindrical cavity is provided inside the connecting rope (132), the cylindrical cavity is coaxial with the connecting rope (132), and the probe (12) is arranged in the cylindrical cavity and can extend out of the connecting rope (132).

7. The road crack detection device according to claim 4, characterized in that: The probe body (1) further includes a support spring (133), which is arranged at one end of the connecting rope (132) away from the elastic support piece (1311), and the support spring (133) is sleeved on the outer periphery of the connecting rope (132). One end of the support spring (133) is connected to the connecting rope (132), and the other end is connected to the fixed tube (11), and the support spring (133) is configured to have a pre-tightening force that enables the connecting rope (132) to pull the elastic support piece (1311) into the fixed tube (11).

8. The road crack detection device according to claim 7, characterized in that: The probe body (1) also includes a pull rod (14) and a support sleeve (15), wherein the pull rod (14) is arranged at the end of the fixed tube (11) adjacent to the support spring (133), and the pull rod (14) is perpendicular to the axial direction of the fixed tube (11). One end of the support sleeve (15) is telescopically connected to the fixed tube (11), and the other end is provided with a pressing plate (151) connected to the connecting rope (132). The pressing plate (151) is provided with a plug-in hole, and the probe rod (12) is inserted into the fixed tube (11) through the plug-in hole. The plate surface of the pressing plate (151) is perpendicular to the axial direction of the fixed tube (11), and the support spring (133) is sleeved on the outer periphery of the support sleeve (15), and one end of the support spring (133) is connected to the connecting rope (132) through the pressing plate (151), and the other end is connected to the fixed tube (11).

9. A road detection device, characterized in that: The device comprises the road crack detection device according to any one of claims 1 to 8.

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