CN216994606U - Negative pressure adsorption type tunnel lining detection device - Google Patents

Abstract

The utility model discloses a negative pressure adsorption type tunnel lining detection device, which comprises: a running gear; the negative pressure generating system is used for generating negative pressure and is fixedly arranged on the running mechanism; a housing connected to the travel mechanism; wherein, a negative pressure cavity is arranged on the shell and is communicated with the negative pressure generating system; the negative pressure cavity is provided with an opening, and the opening faces to a running surface on which the running mechanism runs; still be equipped with the installation cavity that is used for installing the detector in the casing, the quantity in negative pressure chamber is a plurality of, and is a plurality of negative pressure chamber distribute in week side of installation cavity. The detection device provided by the utility model can stably locate the detection device at the position to be detected so as to realize the detection of the inner wall of the tunnel.

Description

Negative pressure adsorption type tunnel lining detection device

Technical Field

The utility model relates to the technical field of engineering detection, in particular to a negative pressure adsorption type tunnel lining detection device.

Background

In the tunnel construction process, the defect detection needs to be carried out on the lining surface of the tunnel. As shown in fig. 1, the areas needing emphasis detection include a left side wall, a left arch, a left vault, a right arch, a right side wall, a right tunnel bottom and a left tunnel bottom. When detecting at the bottom of the left tunnel, at the bottom of the right tunnel, left side wall, because its position is not very high, can directly detect through the mode of handheld detector. The detection of the left arch, the right arch, the left vault, the right vault and the vault needs to be realized by other equipment, such as an engineering vehicle matched with a lifting mechanism. The detection process is inconvenient and has potential safety hazards.

In the prior art, an enterprise innovates and researches the problem, and a Chinese patent with the application number of 202022795047.5 discloses a tunnel concrete lining geological radar unmanned detection device which is used by combining a detector and an unmanned aerial vehicle. However, in practical production application, the detection device cannot be well applied to detection of the left vault, the right vault and the vault. Firstly, the unmanned aerial vehicle is not suitable for detecting the liner above or obliquely above the liner in a stable running state; secondly, when the unmanned aerial vehicle approaches the vault, the unmanned aerial vehicle is influenced by the top in the tunnel, so that the airflow is reduced, the lift force is reduced, the unmanned aerial vehicle is unstable in flying, and the unmanned aerial vehicle cannot approach the vault for detection; thirdly, set up detection device in unmanned aerial vehicle's top, can lead to whole detection device's focus to move up for the degree of difficulty of controlling increases.

Therefore, how to make the detection device stably located at the left vault, the right vault and the vault is one of the important problems to be solved urgently in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a negative pressure adsorption type tunnel lining detection device, which is used for solving the problems in the prior art and can enable the detection device to be stably positioned at a position to be detected so as to realize the detection of the inner wall of a tunnel.

The utility model provides a negative pressure adsorption type tunnel lining detection device, which comprises:

a running gear;

the negative pressure generating system is used for generating negative pressure and is fixedly arranged on the running mechanism;

a housing connected to the travel mechanism;

wherein, a negative pressure cavity is arranged on the shell and is communicated with the negative pressure generating system; the negative pressure cavity is provided with an opening, and the opening faces to a running surface on which the running mechanism runs;

still be equipped with the installation cavity that is used for installing the detector in the casing, the quantity in negative pressure chamber is a plurality of, and is a plurality of negative pressure chamber distribute in week side of installation cavity.

The negative pressure adsorption type tunnel lining detection device as described above, wherein optionally, the number of the negative pressure cavities is four, and the four negative pressure cavities are respectively located on the peripheral side of the installation cavity; and a partition plate is arranged between the negative pressure cavity and the mounting cavity.

The negative pressure adsorption type tunnel lining detection device as described above, wherein optionally, the running mechanism protrudes from the casing by 5-10 mm along the opening direction of the negative pressure cavity.

The negative pressure adsorption type tunnel lining detection device as described above, wherein optionally, a surrounding lining is provided on the housing, the surrounding lining surrounds the opening of the negative pressure cavity, and inclines outwards along the opening direction of the negative pressure cavity.

The negative pressure adsorption type tunnel lining detection device as described above, wherein optionally, the running mechanism includes at least two crawler assemblies;

the two crawler assemblies are oppositely arranged on two sides of the shell;

a plurality of suckers are arranged on the periphery of the crawler assembly;

the sucking disc is used for communicating with the negative pressure generating system when the sucking disc moves to the opening direction of the negative pressure cavity and the opening direction of the negative pressure cavity are consistent.

The negative pressure adsorption type tunnel lining detection apparatus as described above, wherein, optionally, the crawler assembly comprises,

a drive wheel rotatably connected with the housing;

the driven wheel is rotationally connected with the shell;

a track that bypasses the drive wheel and the driven wheel;

the adapter plate is fixedly arranged on the outer side of the shell, and the connector is communicated with the negative pressure generating system; the adapter plate is used for communicating the suckers, the opening direction of which is consistent with the opening direction of the negative pressure cavity, from the inner side of the track.

The negative pressure adsorption type tunnel lining detection device as described above, wherein optionally, a guide rail is provided on the inner side of the crawler;

the guide rail is arranged along the circumferential direction of the crawler belt, and a connecting hole is formed in the guide rail and penetrates through the crawler belt;

the connecting holes correspond to the suckers one by one, and the connecting holes can be communicated with the corresponding suckers;

the adapter plate is provided with a sliding groove, and the sliding groove is connected with the guide rail in a sliding fit manner.

The negative pressure adsorption type tunnel lining detection device as described above, wherein optionally, a chamber is provided in the chute, and the chamber is communicated with the negative pressure generation system.

The negative pressure adsorption type tunnel lining detection device as described above, wherein optionally, the cross section of the guide rail is T-shaped.

The negative pressure adsorption type tunnel lining detection device comprises a driving wheel, a driven wheel, a guide rail, a first groove and a second groove, wherein the driving wheel and the driven wheel are respectively provided with a plurality of first teeth which are uniformly distributed along the circumferential direction;

a second tooth is arranged on the inner side of the crawler belt, and a second groove for avoiding the adapter plate is formed in the middle of the second tooth;

the first teeth are engaged with the second teeth.

Compared with the prior art, the utility model has at least the following beneficial effects:

according to the utility model, the negative pressure generating system and the shell are arranged on the running mechanism, and the negative pressure cavity is arranged in the shell, and the opening of the negative pressure cavity faces the running surface, so that the whole detection device can be prevented from falling off when running between the negative pressure cavity and the running surface, and the whole detection device is stably positioned at the vault, the left vault or the right vault of the tunnel.

According to the utility model, the plurality of negative pressure cavities are arranged on the peripheral side of the installation cavity, so that negative pressure can be formed on the peripheral side of the installation cavity to form adsorption force when the vacuum suction device is used. So, can avoid because the produced rotation trend of the gravity of the inhomogeneous whole device of negative pressure adsorption affinity to make negative pressure adsorption effect better. The negative pressure cavities are arranged in a plurality of ways, so that when a single negative pressure cavity cannot generate adsorption force due to faults, the adsorption force can still be stably generated, and the phenomenon that the single negative pressure cavity suddenly falls off during working can be avoided.

Due to the different degrees of curvature at different locations of the tunnel, it is difficult to adapt to all locations of the tunnel by a fixed shape. According to the utility model, the enclosing lining is arranged at the opening of the negative pressure cavity, when the device is used, gas outside the device enters through a gap between the shell and the wall surface of the tunnel, and due to the generation of airflow, the pressure is reduced due to the flowing of the gas, so that the apron can deform, the gap between the shell and the wall surface of the tunnel is reduced, and the adsorption effect is ensured.

Drawings

FIG. 1 is a schematic cross-sectional view of a tunnel to be inspected in the prior art;

FIG. 2 is a perspective view of the disclosed detection apparatus;

FIG. 3 is a perspective view of the disclosed inspection device from another perspective;

FIG. 4 is a schematic view of the detecting device disclosed in the present invention in a use state;

FIG. 5 is a schematic view of an installation structure of the housing and the detecting instrument disclosed in the present invention;

FIG. 6 is a cross-sectional view of the adapter plate in connection with the mounting structure of the track assembly of the present disclosure;

FIG. 7 is a sectional view of the housing and the inspection device of the present invention in an assembled state;

FIG. 8 is a schematic view of the driving wheel disclosed in the present invention;

FIG. 9 is a schematic view of the construction of the disclosed driven wheel;

FIG. 10 is a cross-sectional view of the track assembly of the present disclosure.

Description of reference numerals:

1-running mechanism, 2-negative pressure generating system, 3-shell;

11-a track assembly;

111-suction cup, 112-driving wheel, 113-driven wheel, 114-crawler belt, 115-adapter plate, 116-guide rail, 117-connecting hole, 118-chute, 119-chamber;

1131 — first tooth, 1132 — first groove;

1141-second tooth, 1142-second groove;

31-negative pressure cavity, 32-installation cavity, 33-clapboard and 34-enclosure lining.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the utility model.

Example 1

Referring to fig. 2 to 4, the present embodiment provides a negative pressure adsorption type tunnel lining detection apparatus, including: running gear 1, negative pressure generating system 2 and housing 3. The running mechanism 1 can be a crawler type or a wheel type, the running mechanism 1 in this embodiment refers to a trolley capable of running, and for convenience of operation, the running mechanism can be a remote control trolley. For the arrangement of the running mechanism 1 and the control mode thereof, reference may be made to a remote control car, which can be realized by those skilled in the art, and this is not the key to the improvement of the present invention, and will not be described herein again. The negative pressure generating system 2 is used for generating negative pressure, and may be a vacuum pumping system. For example, the generation of negative pressure is realized by a vacuum pump, and can also be realized by a fan. During setting, the vacuum pump is selected according to the required negative pressure and weight. The housing 3 is made of a lightweight plastic.

Referring to fig. 4, in a specific implementation, the negative pressure generating system 2 is used for generating negative pressure and is fixedly disposed on the traveling mechanism 1. The housing 3 is connected to the chassis 1. In particular, the housing 3 is fixedly connected to the chassis 1. In practice, the housing 3 is a box or cylinder with an opening at one side. In fig. 4, the direction indicated by the arrow is the air flow direction.

Referring to fig. 2 to 5, in order to enable the detection device to be stably located on the wall surface of the tunnel, a negative pressure cavity 31 is provided on the housing 3, and the negative pressure cavity 31 is communicated with the negative pressure generating system 2; the negative pressure chamber 31 is evacuated by the negative pressure generating system 2. The negative pressure chamber 31 is provided with an opening facing a driving surface on which the driving mechanism 1 drives. When the opening of the negative pressure chamber 31 faces the driving surface, the housing 3 can be pressed against the driving surface by the pressure difference between the inside and the outside of the negative pressure chamber 31. In a specific embodiment, the travel surface referred to in the present invention is a surface on which the present apparatus travels. In the present embodiment, the driving surface is referred to as a tunnel wall surface in the present application, because the present embodiment is used for detecting the tunnel wall surface.

Referring to fig. 5, furthermore, a mounting cavity 32 for mounting a detector is further disposed in the housing 3, the number of the negative pressure cavities 31 is multiple, and the multiple negative pressure cavities 31 are distributed on the peripheral side of the mounting cavity 32. The detector is used for detecting the wall surface of the tunnel, and particularly is a radar concrete detector.

Referring to fig. 5, the negative pressure chamber 31 is provided in a plurality, and the plurality of negative pressure chambers 31 are communicated with the negative pressure generating system 2 through different pipelines. In this way, the reliability in use can be improved.

Referring to fig. 4, in a specific use, it is detected whether the negative pressure generating system 2 is working normally. Then the detection device is placed on the wall surface of the tunnel to be detected, and the negative pressure generation system 2 is started, so that the whole detection device can be adsorbed on the wall surface of the tunnel. When the negative pressure generating system 2 is started, negative pressure is generated, and as the negative pressure cavity 31 is communicated with the negative pressure generating system 2, the pressure in the negative pressure cavity 31 is reduced, the whole detection device is pressed on the wall surface of the tunnel under the action of the difference between the internal pressure and the external pressure, and then the driving mechanism 1 and the wall surface of the tunnel generate friction force, so that the detection device can be stably positioned on the wall surface of the tunnel, and the effect of being adsorbed on the wall surface of the tunnel is achieved. Travel on the wall surface of the tunnel can be realized in cooperation with the travel mechanism 1.

And controlling the running mechanism 1 to run along the wall surface of the tunnel to a position to be detected, such as a left arch waist, a left arch crown, an arch crown, a right arch crown or a right arch waist, and then running straight along the left arch waist, the left arch crown, the right arch crown or the right arch waist, so as to detect the left arch waist, the left arch crown, the right arch crown or the right arch waist.

In the specific implementation, referring to fig. 4 and 5, the above solution can make the detection device adhere to the wall surface and achieve the purpose of walking on the side and top. However, there is a disadvantage that, since the wall surface of the tunnel is a combination of a concave surface and a flat surface, when the detection device travels on the wall surface of the tunnel, particularly, when the detection device travels over the left and right arches, the gap between the housing 3 and the wall surface becomes large. This causes the intake velocity of the negative pressure chamber 31 to increase, which results in a decrease in the pressure difference between the inside and outside of the housing, and a decrease in the adsorption force. For this reason, the present embodiment is further improved, specifically, the number of the negative pressure cavities 31 is four, and the four negative pressure cavities 31 are respectively located on the peripheral sides of the mounting cavities 32; a partition 33 is disposed between the negative pressure chamber 31 and the mounting chamber 32. In practice, the number of the negative pressure chambers 31 may be more than 4, and specifically, each negative pressure chamber 31 should be capable of generating at most at least one half of the gravity of the detection device. When the detection device is used, when the detection device runs to the concave surface at the top, the gap between the opening of the negative pressure cavity 31 and the wall surface of the tunnel is not too large, and the reliability in detection is improved.

Referring to fig. 4, 5 and 7, in the implementation, in order to maintain the pressure difference between the inside and the outside of the negative pressure chamber 31, the negative pressure generating system 2 needs to continuously extract the gas in the negative pressure chamber 31, and in order to ensure that the detection device can be moved to be attached to the wall surface of the tunnel, a gap needs to be provided between the housing 3 and the wall surface of the tunnel. Specifically, the running mechanism 1 protrudes from the housing 35 to 10 mm in the opening direction of the negative pressure chamber 31. Namely, the running gear 1 protrudes from the side of the housing 3 having the opening by 5 to 10 mm. When the detection device is attached to the wall surface of the tunnel by the suction effect of the negative pressure in use, the distance between the side of the housing 3 having the opening and the wall surface is 5 to 10 mm when the travel mechanism 1 is in contact with the wall surface of the tunnel.

The plurality of negative pressure chambers 31 can improve reliability to some extent, but the suction force is still reduced when the vehicle travels on a curved surface. For this purpose, the present embodiment is further improved, and specifically, a surrounding liner 34 is provided on the housing 3, and the surrounding liner 34 surrounds the opening of the negative pressure cavity 31 and is inclined outward in the opening direction of the negative pressure cavity 31. Since the gap between the negative pressure chamber 31 and the wall surface is an air inlet of the negative pressure chamber 31, if the gap is too large, sufficient negative pressure cannot be generated. By arranging the apron 34, negative pressure is formed during air intake, and the apron 34 can be pressed towards the wall surface, so that the gap between the negative pressure cavity 31 and the wall surface is reduced, and the pressure difference between the inside and the outside of the negative pressure cavity 31 is favorably kept.

Example 2

This embodiment is an improvement on the basis of embodiment 1, and the same points are not described again, and only the differences will be described below.

Referring to fig. 2, fig. 3, fig. 4, fig. 6, fig. 8, fig. 9 and fig. 10, in the present embodiment, in addition to the features described in embodiment 1, the following improvements are included: the running gear 1 comprises at least two track assemblies 11; that is, in order to secure the suction force of the detection device to the wall surface, the present embodiment uses the crawler belt assembly 11, and a plurality of suction pads 111 are provided on the outer circumference of the crawler belt assembly 11 to secure the suction force. Of course, in other embodiments, the chassis 1 may be used with conventional tracks directly or with conventional wheels. By providing suction cups 111 on track assemblies 11, a suction effect can be created, and the need for negative pressure generated by negative pressure chamber 31 is reduced, as compared to not providing suction cups 111.

Referring to fig. 6 and 10, since the suction cups 111 are disposed on the track assembly 11, the suction cups 111 need to rotate along with the track assembly 11 during the driving process, and if negative pressure is always maintained in the suction cups 111, the track assembly 11 is inconvenient to walk, and it is difficult to connect the suction cups 111 to the negative pressure generating system. In order to solve the problem, the embodiment is further configured, specifically, two track assemblies 11 are oppositely arranged on two sides of the housing 3; a plurality of suckers 111 are arranged on the periphery of the crawler belt assembly 11; the suction cup 111 is used for communicating with the negative pressure generating system 2 when moving to the opening direction of the negative pressure chamber 31.

In a specific implementation, in order to realize that the suction cup 111 with the opening facing the driving surface can generate negative pressure, and the suction cups 111 moving to other positions do not form negative pressure any more, the present embodiment is further improved, and the track assembly 11 includes a driving wheel 112, a driven wheel 113, a track 114, and an adapter plate 115. In particular, the driving wheel 112 is rotationally connected to the casing 3; the driven wheel 113 is rotationally connected with the shell 3; the track 114 passes around the drive wheel 112 and the driven wheel 113. The adapter plate 115 is fixedly arranged on the outer side of the shell 3, and the connector is communicated with the negative pressure generating system 2; the adapter plate 115 is used for communicating with the suction cups 111 whose opening direction coincides with the opening direction of the negative pressure chamber 31 from the inner side of the crawler 114.

Referring to fig. 6 and 10, further, the inner side of the track 114 is provided with a guide rail 116; the guide rail 116 is used for being connected with the adapter plate 115 in a sliding manner, further, the guide rail 116 is arranged along the circumferential direction of the crawler 114, a connecting hole 117 is arranged on the guide rail 116, and the connecting hole 117 penetrates through the crawler 114; the connecting holes 117 correspond to the suckers 111 one by one, and the connecting holes 117 can be communicated with the corresponding suckers 111; the adapter plate 115 is provided with a chute 118, and the chute 118 is connected with the guide rail 116 in a sliding fit manner. In practice, when the suction cup 111 is rotated to a side close to the driving surface, the suction cup 111 communicates with the negative pressure generating system 2 through the corresponding connection hole 117, so that the suction cup 111 generates a negative pressure. With the sliding of the guide rail 116 and the adapter plate 115, when the suction cup 111 rotates to another position, the corresponding connection hole 117 is no longer communicated with the negative pressure generating system 2, and the suction cup 111 no longer generates negative pressure.

Referring to fig. 6 and 10, further, a chamber 119 is disposed in the chute 118, and the chamber 119 is in communication with the negative pressure generating system 2. In practice, when the connecting hole 117 leaves the position corresponding to the connecting plate 115, the corresponding suction cup 111 is disconnected from the chamber 119, i.e. the suction cup no longer generates a negative pressure, and in practice, the guide rail 116 may be made of a rubber material, and the surface of the guide rail 116 is provided with a wear-resistant layer. The guide rail 116 is connected with the sliding groove 118 in a sliding and sealing manner. To prevent disengagement between the runner 118 and the rail 116, the rail 116 is T-shaped in cross-section.

Referring to fig. 8 to fig. 10, further, a plurality of first teeth 1131 are uniformly distributed on the driving wheel 112 and the driven wheel 113, and a first groove 1132 for avoiding the guide rail 116 is arranged in the middle of the first teeth 1131; a second tooth 1141 is arranged on the inner side of the track 114, and a second groove 1142 for avoiding the adapter plate 115 is arranged in the middle of the second tooth 1141; the first tooth 1131 engages with the second tooth 1141. In this way, the adaptation between the driving wheel 112, the driven wheel 113 and the track 114 is facilitated.

The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.

Claims (10)

1. A negative pressure adsorption type tunnel lining detection device comprises:

a running gear (1);

the negative pressure generating system (2) is used for generating negative pressure, and is fixedly arranged on the running mechanism (1);

a housing (3), wherein the housing (3) is connected to the chassis (1);

the method is characterized in that: a negative pressure cavity (31) is arranged on the shell (3), and the negative pressure cavity (31) is communicated with the negative pressure generating system (2); an opening is arranged on the negative pressure cavity (31), and the opening faces to a running surface on which the running mechanism (1) runs;

still be equipped with installation cavity (32) that are used for installing the detector in casing (3), the quantity of negative pressure chamber (31) is a plurality of, and is a plurality of negative pressure chamber (31) distribute in the week side of installation cavity (32).

2. The negative pressure adsorption type tunnel lining detection device according to claim 1, wherein the number of the negative pressure cavities (31) is four, and the four negative pressure cavities (31) are respectively located on the peripheral side of the installation cavity (32); a partition plate (33) is arranged between the negative pressure cavity (31) and the installation cavity (32).

3. The negative pressure adsorption type tunnel lining detection device according to claim 2, wherein the running mechanism (1) protrudes from the housing (3) by 5-10 mm along the opening direction of the negative pressure cavity (31).

4. The negative pressure adsorption type tunnel lining detection device according to claim 2, wherein a surrounding lining (34) is arranged on the housing (3), and the surrounding lining (34) surrounds the opening of the negative pressure cavity (31) and inclines outwards along the opening direction of the negative pressure cavity (31).

5. The negative pressure adsorption type tunnel lining detection apparatus according to any one of claims 1 to 4, wherein the traveling mechanism (1) includes at least two crawler assemblies (11);

the two crawler assemblies (11) are oppositely arranged on two sides of the shell (3);

a plurality of suckers (111) are arranged on the periphery of the crawler assembly (11);

the suction cup (111) is used for communicating with the negative pressure generating system (2) when moving to the opening direction of the negative pressure cavity (31).

6. The negative pressure adsorption type tunnel lining detection apparatus according to claim 5, wherein the crawler assembly (11) comprises,

a drive wheel (112), wherein the drive wheel (112) is rotationally connected with the housing (3);

the driven wheel (113), the said driven wheel (113) is connected with said body (3) rotatably;

a track (114), the track (114) passing around the drive wheel (112) and the driven wheel (113);

the adapter plate (115) is fixedly arranged on the outer side of the shell (3), and the adapter plate (115) is communicated with the negative pressure generating system (2); the adapter plate (115) is used for communicating the suction cups (111) with the opening direction consistent with the opening direction of the negative pressure cavity (31) from the inner side of the crawler belt (114).

7. The negative pressure adsorption type tunnel lining detection device according to claim 6, wherein a guide rail (116) is provided on the inner side of the crawler (114);

the guide rail (116) is arranged along the circumferential direction of the crawler belt (114), a connecting hole (117) is formed in the guide rail (116), and the connecting hole (117) penetrates through the crawler belt (114);

the connecting holes (117) correspond to the suckers (111) one by one, and the connecting holes (117) can be communicated with the corresponding suckers (111);

the adapter plate (115) is provided with a sliding groove (118), and the sliding groove (118) is connected with the guide rail (116) in a sliding fit manner.

8. The negative pressure adsorption type tunnel lining detection device according to claim 7, wherein a chamber (119) is arranged in the chute (118), and the chamber (119) is communicated with the negative pressure generation system (2).

9. The negative pressure adsorption type tunnel lining detection device according to claim 7, wherein the cross section of the guide rail (116) is T-shaped.

10. The negative pressure adsorption type tunnel lining detection device according to claim 7, wherein a plurality of first teeth (1131) are uniformly distributed along the circumferential direction on the driving wheel (112) and the driven wheel (113), and a first groove (1132) for avoiding the guide rail (116) is arranged in the middle of each first tooth (1131);

a second tooth (1141) is arranged on the inner side of the track (114), and a second groove (1142) for avoiding the adapter plate (115) is formed in the middle of the second tooth (1141);

the first tooth (1131) is in meshing engagement with the second tooth (1141).

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