A tunnel vault stability detection device

Abstract

The application belongs to the field of ground penetrating radar, and particularly relates to a tunnel vault stability detection device, which comprises a ground penetrating radar and a radar body, one side of the ground penetrating radar is provided with the radar body, and the side of the ground penetrating radar away from the radar body is provided with a display; a plurality of hollow columns are fixedly installed on the side of the ground penetrating radar close to the display, grooves are formed in the surface of the hollow columns, and sliding columns are slidably connected in the hollow columns; the ground penetrating radar is supported by the sliding columns and the hollow columns, so that the staff member does not need to continue to hold up the ground penetrating radar, the shaking of the ground penetrating radar is reduced by fixing the ground penetrating radar in this way, the ground penetrating radar does not shake along with the staff member, and the detection precision of the ground penetrating radar is affected.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of ground penetrating radar, and particularly relates to a tunnel vault stability detection device. BACKGROUND

[0002] During tunnel construction, in order to test the firmness and reliability of the tunnel, the tunnel vault is often detected during construction, and the commonly used tunnel detection device is a ground penetrating radar, which detects the cavity, broken plate and bulge of the tunnel vault in real time.

[0003] The worker stands on the ladder, and then holds up the ground penetrating radar, so that one side of the radar contacts the tunnel vault, and then the tunnel vault is detected by the radar, and the detected data is transmitted to the display of the ground penetrating radar, so that the worker can analyze the condition of the tunnel vault.

[0004] Since the ground penetrating radar itself is heavy, when a long tunnel is encountered, the worker needs to hold up the ground penetrating radar for a long time, which easily leads to arm fatigue of the worker, and it is difficult for the worker to support and hold up the ground penetrating radar for a long time, so the ground penetrating radar needs to be put down after being held up for a period of time, and the worker needs to take a rest, which greatly reduces the working efficiency of the ground penetrating radar.

[0005] Therefore, the application provides a tunnel vault stability detection device. SUMMARY

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem in the background art.

[0007] The technical scheme adopted by the present application to solve its technical problems is: the tunnel vault stability detection device comprises a ground penetrating radar and a radar body, one side of the ground penetrating radar is provided with the radar body, and the side of the ground penetrating radar away from the radar body is provided with a display; a plurality of hollow columns are fixedly installed on the side of the ground penetrating radar close to the display, grooves are formed in the surfaces of the hollow columns, sliding columns are slidably connected in the hollow columns, slots are formed in the sides of the sliding columns, the slots are fixedly installed with elastic sheets, limit rods are slidably connected in the slots, one end of the limit rod is fixedly connected with the elastic sheet, the end of the limit rod away from the elastic sheet is semicircular, a plurality of limit holes are formed in the surfaces of the hollow columns, the hollow columns are provided with second springs in the interiors, and the two ends of the second springs are fixedly connected with the hollow columns and the sliding columns; because the ground penetrating radar itself is heavy, when a long tunnel is encountered, the staff needs to hold the ground penetrating radar for a long time, which easily causes the staff's arms to be tired, it is difficult to support and hold the ground penetrating radar for a long time, and the ground penetrating radar needs to be put down and the staff needs to rest and adjust after being held for a period of time, which greatly reduces the working efficiency of the ground penetrating radar; when the ground penetrating radar needs to be used during the working of the present application, the staff first holds the grooves on the hollow columns, the grooves play the role of facilitating holding and preventing sliding, and then the staff holds up the ground penetrating radar, so that the surface of the radar body of the ground penetrating radar is attached to the surface of the tunnel vault; at this time, the limit rod is slid into the slot of the sliding column and presses the elastic sheet, the sliding column in the hollow column is conveniently slid, the sliding column is slid away from the ground penetrating radar, the bottom end of the sliding column is attached to the surface of the ladder, the ladder is used as support when the ground penetrating radar is used, the ground penetrating radar is conveniently placed and moved, at this time, the limit rod and the limit hole on the hollow column are on the same straight line, the elastic sheet in the slot of the sliding column restores the elastic force, the limit rod is reset and passes through the limit hole of the sliding column, the sliding column and the hollow column are fixed, the ground penetrating radar is supported by the sliding column and the hollow column at this time, so that the staff does not need to continue to hold up the ground penetrating radar, the staff holding the ground penetrating radar in this way can also reduce the shaking of the ground penetrating radar, reduce the shaking of the ground penetrating radar caused by the staff holding instability, and thus affect the detection accuracy of the ground penetrating radar.

[0008] Preferably, support feet are rotatably connected to the two sides of the sliding column, and the bottom of the support foot is made of magnet material; when the bottom end of the sliding column contacts the ladder during working, the support feet on the two sides of the sliding column are rotated, so that the support feet are turned out of the side wall of the sliding column, the sliding column cooperates with the two support frames to form a triangle, and thus better stability is achieved; because the ladder carrying the staff is made of metal material, the magnet material at the bottom end of the support foot is just adsorbed to the ladder, so that better fixing effect is achieved.

[0009] Preferably, one side of the hollow column is fixedly provided with an "L"-shaped base, the long arm end of the base is rotatably connected with a rubber roller.

[0010] Preferably, both sides of the base are fixedly provided with rectangular plates, one side of the rectangular plate is rotatably connected with a scraper, and the first spring is fixedly arranged between the scraper and the rectangular plate.

[0011] Preferably, the inside of the rectangular plate is provided with an arc-shaped cavity, the arc-shaped compression rod is slidably connected in the cavity, one end of the compression rod is movably connected with the scraper, the inside of the rectangular plate is provided with a gas permeation pipe, and one end of the gas permeation pipe is communicated with the cavity.

[0012] Preferably, the end of the gas permeation pipe away from the cavity is in an inclined cross section, the inner wall of the gas permeation pipe is fixedly provided with an elastic rope, the other end of the elastic rope is fixedly provided with a warning ball, and the inside of the warning ball is provided with a through hole penetrating through the warning ball.

[0013] Preferably, the inside of the rectangular plate is provided with an arc-shaped branch pipe, one end of the branch pipe is communicated with the air pipe, and the side of the scraper is fixedly provided with a V-shaped guide plate; in operation, the cement particles broken by the scraper will fall on the V-shaped guide plate, at this time, the V-shaped guide plate plays a role of guiding the cement debris, so that the cement debris is guided to the two sides of the scraper, reducing the cement debris stagnating on the scraper, and part of the gas in the air pipe is blown out through the branch pipe, thereby blowing away the cement debris on the scraper and the guide plate, playing a further cleaning role.

[0014] Preferably, the top end of the sliding column is fixedly provided with a fixed plate, the top of the fixed plate is inclined, one end of the base is provided with a sliding groove, the inside of the sliding groove is slidably connected with a push plate, one end of the push plate is inclined and located in the hollow column, and the upper part and the lower part of the base are respectively provided with a first hole and a second hole; in operation, the sliding column is slid, so that the sliding column moves together with the fixed plate at the top, since the inclined surfaces of the fixed plate and the push plate close to each other are both made of magnet material, when the sliding column slides away from the hollow column, the fixed plate moves together with the push plate, so that the push plate enters the hollow column, and the cooperation between the push plate and the sliding groove is similar to that between a piston and a piston cylinder, so that when the fixed plate pushes the push plate, the air in the sliding groove is compressed to be blown out through the first hole and the second hole, thereby blowing and cooling the ground penetrating radar and the worker, facilitating long-time work of the ground penetrating radar.

[0015] Preferably, the inner walls of the first hole and the second hole are fixedly provided with elastic thin films, and the surfaces of the thin films are provided with holes; in operation, when the first hole and the second hole blow air, the elastic thin films are blown to bulge, thereby allowing the air to be blown out through the holes on the surfaces, and at the same time, the first hole and the second hole are protected by the thin films when not in use, reducing the entry of dust.

[0016] Preferably, the bottom end of the sliding column is provided with a groove, and an anti-skid strip is fixedly installed in the groove at the bottom end of the sliding column; in operation, when the bottom end of the sliding column contacts the ladder, the rubber anti-skid strip at the bottom end of the sliding column contacts the ladder first, thereby increasing friction and facilitating fixation.

[0017] The beneficial effects of the present application are as follows:

[0018] 1. The present application provides a tunnel vault stability detection device, which supports the ground penetrating radar through a sliding column and a hollow column, so that the worker does not need to continue to hold the ground penetrating radar, and the shaking of the ground penetrating radar is also reduced through this way of fixing the ground penetrating radar, so that the worker holding the ground penetrating radar does not affect the detection accuracy of the ground penetrating radar.

[0019] 2. The application provides a tunnel vault stability detection device, through rotating the scraper and driving the compression rod to rotate, at this time, the arc-shaped compression rod slides in the cavity, the compression rod and the cavity are matched like a piston and a piston cylinder, the compression rod extrudes the gas in the cavity to discharge, and then the gas is blown out through the air pipe, so that the cement particle debris accumulated on the scraper and the rectangular plate is blown away, and the self-cleaning effect is realized. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0021] The application will be further described below in combination with the drawings.

[0022] Figure 1 is a three-dimensional schematic view in the present application;

[0023] Figure 2 is a structure schematic view of the ground penetrating radar in the present application;

[0024] Figure 3 is a partial structure schematic view of the hollow column in the present application;

[0025] Figure 4 is a partial structure schematic view of the base in the present application;

[0026] Figure 5 is a partial structure schematic view of the rectangular plate in the present application;

[0027] Figure 6 is a partial structure schematic view of the rectangular plate in the present application; Figure 5 is an enlarged view of A in the present application;

[0028] Figure 7 is a partial structure schematic view of the push plate in the present application;

[0029] Figure 8 is a structure schematic view of the sliding column in the second embodiment;

[0030] In the figure: 1, ground penetrating radar; 2, radar body; 3, display; 4, hollow column; 5, groove; 6, sliding column; 7, limit hole; 8, elastic sheet; 9, limit rod; 10, supporting leg; 11, base; 12, roller; 13, rectangular plate; 14, scraper; 15, first spring; 16, cavity; 17, compression rod; 18, air pipe; 19, elastic rope; 20, warning ball; 21, through hole; 22, branch pipe; 23, guide plate; 24, fixed plate; 25, sliding groove; 26, push plate; 27, first hole; 28, second hole; 29, film; 30, second spring; 31, anti-skid strip. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in conjunction with specific embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, not all. 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.

[0032] Embodiment one:

[0033] Please refer to Figures 1-5As shown, the tunnel vault stability detection device provided by the embodiment of the present application comprises a ground penetrating radar 1 and a radar body 2, one side of the ground penetrating radar 1 is provided with the radar body 2, and the side of the ground penetrating radar 1 away from the radar body 2 is provided with a display 3; a plurality of hollow columns 4 are fixedly installed on the side of the ground penetrating radar 1 close to the display 3, grooves 5 are formed on the surface of the hollow column 4, a sliding column 6 is slidably connected in the hollow column 4, a slot is formed on one side of the sliding column 6, the elastic sheet 8 is fixedly installed in the slot of the sliding column 6, a limiting rod 9 is slidably connected in the slot of the sliding column 6, one end of the limiting rod 9 is fixedly connected with the elastic sheet 8, the end of the limiting rod 9 away from the elastic sheet 8 is semicircular, a plurality of limiting holes 7 are formed on the surface of the hollow column 4, a second spring 30 is arranged in the hollow column 4, and the two ends of the second spring 30 are fixedly connected with the hollow column 4 and the sliding column 6 respectively; because the ground penetrating radar 1 itself is heavy, when a long tunnel is encountered, the staff needs to hold up the ground penetrating radar 1 for a long time, which easily leads to the staff's arm fatigue, and it is difficult to support and hold up the ground penetrating radar 1 for a long time, so that the ground penetrating radar 1 needs to be put down and the staff needs to rest and adjust after being held up for a period of time, which greatly reduces the working efficiency of the ground penetrating radar 1, when the ground penetrating radar 1 needs to be used during the working of the embodiment of the present application, the staff first holds the grooves 5 on the hollow column 4 tightly, the grooves 5 play the role of facilitating holding and preventing sliding, and then the staff holds up the ground penetrating radar 1, so that the surface of the radar body 2 of the ground penetrating radar 1 is attached to the surface of the tunnel vault, at this time, the limiting rod 9 is slid into the slot of the sliding column 6 and presses the elastic sheet 8, which facilitates the subsequent sliding of the sliding column 6 in the hollow column 4, then the sliding column 6 is slid away from the ground penetrating radar 1, so that the bottom end of the sliding column 6 is attached to the surface of the ladder, when the ground penetrating radar 1 is used, the ladder needs to be used as support to facilitate the placement and movement of the ground penetrating radar 1, at this time, the limiting rod 9 and the limiting holes 7 on the hollow column 4 are on the same straight line, the elastic sheet 8 in the slot of the sliding column 6 restores the elastic force, and then the limiting rod 9 is reset and passes through the limiting hole 7 of the sliding column 6, so that the sliding column 6 and the hollow column 4 are fixed, at this time, the ground penetrating radar 1 is supported by the sliding column 6 and the hollow column 4, so that the staff does not need to continue to hold up the ground penetrating radar 1, and the staff holding the ground penetrating radar 1 in this way can also reduce the shaking of the ground penetrating radar 1, reduce the shaking of the ground penetrating radar 1 caused by the staff holding it unstably, and thus affect the detection accuracy of the ground penetrating radar 1.

[0034] Two sides of the sliding column 6 are rotationally connected with support feet 10, the bottom of the support feet 10 is made of magnet material; when the bottom end of the sliding column 6 contacts with the ladder, the support feet 10 on both sides of the sliding column 6 are rotated, so that the support feet 10 are turned out of the side wall of the sliding column 6, at this time the sliding column 6 cooperates with the two support frames to form a triangle, thereby better stability, since the ladder carrying the staff is made of metal material, so the magnet material at the bottom end of the support feet 10 is just adsorbed with the ladder, thereby better fixing effect.

[0035] One side of the hollow column 4 is fixedly provided with an "L"-shaped base 11, the long arm end of the base 11 is rotationally connected with a roller 12, the roller 12 is made of rubber material; when the ground penetrating radar 1 is moving, the roller 12 on the base 11 plays a guiding role, at the same time the roller 12 also plays a role of rolling the protruding cement particles on the tunnel, thereby adapting to the function of the tunnel vault, facilitating the safe forward movement of the ground penetrating radar 1.

[0036] As shown in Figures 2-7 The two sides of the base 11 are fixedly provided with rectangular plates 13, one side of the rectangular plate 13 is rotationally connected with a scraper 14, and the first spring 15 is fixedly installed between the scraper 14 and the rectangular plate 13; when the base 11 is moving, the rectangular plate 13 and the scraper 14 on both sides move together, so that the scraper 14 cleans the protruding cement particles at the tunnel vault, and also protects the radar body 2 on the ground penetrating radar 1; when the scraper 14 encounters hard cement particles and cannot be removed at one time, the rotation of the scraper 14 allows the cement particles to push against the scraper 14, thereby increasing the resistance and reminding the staff to avoid the cement particles on the tunnel vault that cannot be removed, thereby protecting the radar body 2 on the ground penetrating radar 1.

[0037] An arc-shaped cavity 16 is formed in the interior of the rectangular plate 13, the arc-shaped compression rod 17 is slidably connected in the interior of the cavity 16, one end of the compression rod 17 is movably connected with the scraper 14, and the air pipe 18 is formed in the interior of the rectangular plate 13, one end of the air pipe 18 communicates with the cavity 16; when the scraper 14 encounters hard cement particles and cannot be removed at one time, the scraper 14 rotates and drives the compression rod 17 to rotate, at this time the arc-shaped compression rod 17 slides in the cavity 16, the compression rod 17 and the cavity 16 are similar to the piston and the piston cylinder, the compression rod 17 extrudes the gas in the cavity 16 to be discharged, thereby allowing the gas to be blown out through the air pipe 18, so as to blow away the cement particle debris accumulated on the scraper 14 and the rectangular plate 13, thereby realizing the self-cleaning effect.

[0038] The section of the air pipe 18 far away from the cavity 16 is inclined, the inner wall of the air pipe 18 is fixedly installed with an elastic rope 19, the other end of the elastic rope 19 is fixedly installed with a warning ball 20, the inside of the warning ball 20 is provided with a through hole 21 penetrating through itself; in working, the scraper 14 is driven to rotate the compression rod 17 because it cannot remove the hard cement particles at one time, and then the air pipe 18 blows out the gas, and the warning ball 20 is blown out of the air pipe 18 by the gas, and contacts the tunnel vault, and then the friction is increased, so as to prompt the staff that there are cement particles that cannot be cleaned at one time, and the radar body 2 of the ground penetrating radar 1 needs to be protected, and the section of one end of the air pipe 18 is arc-shaped, so as to better hold the warning ball 20 and prevent the warning ball 20 from falling excessively.

[0039] The inside of the rectangular plate 13 is provided with an arc-shaped branch pipe 22, one end of the branch pipe 22 is communicated with the air pipe 18, and the side of the scraper 14 is fixedly installed with a guide plate 23 in the shape of a "V"; in working, the broken cement particles of the scraper 14 are scattered on the guide plate 23 in the shape of a "V", at this time, the guide plate 23 in the shape of a "V" plays a role in guiding the cement debris, so that the cement debris is guided to the two sides of the scraper 14, the cement debris is reduced to stagnate on the scraper 14, and part of the gas in the air pipe 18 is blown out through the branch pipe 22, so as to blow away the cement debris on the scraper 14 and the guide plate 23, and play a further cleaning role.

[0040] The top end of the sliding column 6 is fixedly installed with a fixed plate 24, the top of the fixed plate 24 is inclined, one end of the base 11 is provided with a sliding groove 25, the sliding groove 25 is slidably connected with a push plate 26, one end of the push plate 26 is inclined and is in the hollow column 4, and the upper part and the lower part of the base 11 are respectively provided with a first hole 27 and a second hole 28; in working, the sliding column 6 is slid, so that the sliding column 6 moves together with the fixed plate 24 at the top, because the inclined surfaces of the fixed plate 24 and the push plate 26 close to each other are both made of magnet material, when the sliding column 6 slides away from the hollow column 4, the fixed plate 24 moves together with the push plate 26, so that the push plate 26 enters the hollow column 4, and the cooperation between the push plate 26 and the sliding groove 25 is similar to that between a piston and a piston cylinder, so that when the fixed plate 24 pushes the push plate 26, the air in the sliding groove 25 is compressed, and the air in the sliding groove 25 is blown out through the first hole 27 and the second hole 28, so as to blow and cool the ground penetrating radar 1 and the staff, and facilitate the long-time working of the ground penetrating radar 1.

[0041] The inner wall of the first hole 27 and the second hole 28 is fixedly installed with a thin film 29 of elastic material, and the surface of the thin film 29 is provided with a hole; in operation, when the first hole 27 and the second hole 28 are blowing, the thin film 29 of elastic material is blown, so that the thin film 29 is inflated, and the gas is blown out through the hole on the surface, and at the same time, when the first hole 27 and the second hole 28 are not used, the thin film 29 can protect the first hole 27 and the second hole 28, and reduce the entry of dust.

[0042] Embodiment two:

[0043] As shown in Figure 8 , comparative embodiment one, wherein another embodiment of the application is:

[0044] The bottom end of the sliding column 6 is provided with a groove, and the groove at the bottom end of the sliding column 6 is fixedly installed with an anti-skid strip 31; in operation, when the bottom end of the sliding column 6 contacts the ladder, the anti-skid strip 31 of rubber material at the bottom end of the sliding column 6 will contact the ladder first, thereby increasing the friction and facilitating the fixation.

[0045] Working principle: when the ground penetrating radar 1 needs to be used, the staff first holds the recess 5 on the hollow column 4 tightly, the recess 5 plays the role of convenient holding and anti-skid, thereby facilitating the staff to hold up the ground penetrating radar 1, so that the radar body 2 of the ground penetrating radar 1 is attached to the surface of the tunnel vault, at this time the limiting rod 9 is slid into the groove of the sliding column 6 and presses the spring sheet 8, which is convenient for subsequent sliding of the sliding column 6 in the hollow column 4, then the sliding column 6 is slid away from the ground penetrating radar 1, so that the bottom end of the sliding column 6 is attached to the surface of the ladder, when the ground penetrating radar 1 is used, the ladder needs to be used as a support to facilitate the placement and movement of the ground penetrating radar 1, at this time the limiting rod 9 and the limiting hole 7 on the hollow column 4 are on the same straight line, the spring sheet 8 in the groove of the anti-skid sliding column 6 restores the elastic force, thereby resetting the limiting rod 9 and passing through the limiting hole 7 of the sliding column 6, so that the sliding column 6 and the hollow column 4 are fixed, at this time the ground penetrating radar 1 is supported by the sliding column 6 and the hollow column 4, so that the staff does not need to continue to hold up the ground penetrating radar 1, and the way of fixing the ground penetrating radar 1 can also reduce the shaking of the ground penetrating radar 1, when the bottom end of the sliding column 6 contacts the ladder, at this time the support feet 10 on both sides of the sliding column 6 are rotated, so that the support feet 10 are rotated out of the side wall of the sliding column 6, at this time the sliding column 6 cooperates with the two support frames to form a triangle, thereby achieving better stability, since the ladder carrying the staff is made of metal material, the magnet material at the bottom end of the support feet 10 is just adsorbed to the ladder, thereby achieving better fixing effect, reducing the shaking of the ground penetrating radar 1 caused by the staff holding it, thereby affecting the detection accuracy of the ground penetrating radar 1.

[0046] When the ground penetrating radar 1 is moving, the guide effect is played by the rollers 12 on the base 11, and the rollers 12 also play the role of rolling the protruding cement particles on the tunnel, thereby adapting to the role of the tunnel vault, facilitating the safe forward movement of the ground penetrating radar 1, when the base 11 is moving, the rectangular plate 13 and the scraper 14 on both sides will move together, so that the scraper 14 cleans the protruding cement particles on the tunnel vault, and also protects the radar body 2 on the ground penetrating radar 1, when the scraper 14 encounters hard cement particles that cannot be removed at one time, the rotation of the scraper 14 allows the cement particles to push against the scraper 14, thereby increasing the resistance, reminding the staff to avoid the cement particles on the tunnel vault that cannot be removed, thereby protecting the radar body 2 on the ground penetrating radar 1, the rotation of the scraper 14 will drive the compression rod 17 to rotate, at this time the arc-shaped compression rod 17 will slide in the cavity 16, the compression rod 17 and the cavity 16 are similar to a piston and a piston cylinder, the compression rod 17 extrudes the gas in the cavity 16 to be discharged, thereby allowing the gas to be blown out through the air pipe 18, so as to blow away the cement particle debris accumulated on the scraper 14 and the rectangular plate 13, thereby realizing the effect of self-cleaning, the scraper 14 will drive the compression rod 17 to rotate because it encounters hard cement particles that cannot be removed at one time, thereby allowing the air pipe 18 to blow out gas, and the warning ball 20 is blown out of the air pipe 18 by the gas, and contacts the tunnel vault, thereby increasing the friction, thereby prompting the staff to pay attention to the cement particles that cannot be removed at one time, and to protect the radar body 2 of the ground penetrating radar 1, and the cross section of one end of the air pipe 18 is arc-shaped in order to better hold the warning ball 20, prevent the warning ball 20 from falling too much, the broken cement particles of the scraper 14 will fall on the "V"-shaped guide plate 23, at this time the "V"-shaped guide plate 23 plays the role of guiding the cement debris, so that the cement debris is guided to the two sides of the scraper 14, reducing the cement debris stagnating on the scraper 14, part of the gas in the air pipe 18 will be blown out through the branch pipe 22, thereby blowing away the cement debris on the scraper 14 and the guide plate 23, playing a further cleaning role.

[0047] By sliding the sliding column 6, the sliding column 6 moves together with the top fixed plate 24, and since the inclined surfaces of the fixed plate 24 and the push plate 26 at the end close to each other are made of magnet material, when the sliding column 6 slides away from the hollow column 4, the fixed plate 24 will move together with the push plate 26, so that the push plate 26 enters the hollow column 4, and the cooperation between the push plate 26 and the sliding groove 25 is similar to that between the piston and the piston cylinder, so that when the fixed plate 24 pushes the push plate 26, it will squeeze the air in the sliding groove 25, so that the air in the sliding groove 25 is blown out through the first hole 27 and the second hole 28, thereby blowing and cooling the ground penetrating radar 1 and the workers, facilitating the long-time work of the ground penetrating radar 1, and when the first hole 27 and the second hole 28 are blowing, the thin film 29 made of elastic material will be blown, so that the thin film 29 is inflated, thereby allowing the gas to be blown out through the holes on the surface, and at the same time, the first hole 27 and the second hole 28 will be protected by the thin film 29 when not in use, reducing the entry of dust.

[0048] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A tunnel vault stability detection device, comprising a ground penetrating radar (1) and a radar body (2), one side of the ground penetrating radar (1) is provided with the radar body (2), and the side of the ground penetrating radar (1) away from the radar body (2) is provided with a display (3); characterized in that: The ground penetrating radar (1) is fixedly installed with a plurality of hollow columns (4) near one side of the display (3), grooves (5) are formed in the surfaces of the hollow columns (4), sliding columns (6) are slidably connected in the hollow columns (4), slots are formed in one side of the sliding columns (6), elastic sheets (8) are fixedly installed in the slots of the sliding columns (6), limit rods (9) are slidably connected in the slots of the sliding columns (6), one end of the limit rod (9) is fixedly connected with the elastic sheet (8), the end of the limit rod (9) away from the elastic sheet (8) is semicircular, a plurality of limit holes (7) are formed in the surfaces of the hollow columns (4), second springs (30) are arranged in the hollow columns (4), and two ends of the second spring (30) are fixedly connected with the hollow column (4) and the sliding column (6) respectively. The side of the hollow column (4) is fixedly installed with an "L"-shaped base (11), the long arm end of the base (11) is rotatably connected with a roller (12), and the roller (12) is made of rubber material. The top end of the sliding column (6) is fixedly installed with a fixed plate (24), the top of the fixed plate (24) is inclined, one end of the base (11) is formed with a sliding groove (25), the inside of the sliding groove (25) is slidably connected with a push plate (26), one end of the push plate (26) is inclined and located in the hollow column (4), and the upper part and the lower part of the base (11) are respectively formed with a first hole (27) and a second hole (28). The inner walls of the first hole (27) and the second hole (28) are fixedly installed with elastic thin films (29), and holes are formed in the surfaces of the thin films (29).

2. The device for detecting the stability of a tunnel vault according to claim 1, characterized in that: Rotatable supporting legs (10) are connected to the two sides of the sliding column (6), and the bottom of the supporting leg (10) is made of magnet material.

3. A device for detecting the stability of a tunnel vault according to claim 2, characterized in that: Rectangular plates (13) are fixedly installed on the two sides of the base (11), a scraper (14) is rotatably connected to one side of the rectangular plate (13), and a first spring (15) is fixedly installed between the scraper (14) and the rectangular plate (13).

4. The device for detecting the stability of a tunnel vault according to claim 3, characterized in that: An arc-shaped cavity (16) is formed in the inside of the rectangular plate (13), an arc-shaped compression rod (17) is slidably connected in the inside of the cavity (16), one end of the compression rod (17) is movably connected with the scraper (14), a ventilation pipe (18) is formed in the inside of the rectangular plate (13), and one end of the ventilation pipe (18) is communicated with the cavity (16).

5. A device for detecting the stability of a tunnel vault according to claim 4, characterized in that: The section of the end of the ventilation pipe (18) away from the cavity (16) is inclined, an elastic rope (19) is fixedly installed on the inner wall of the ventilation pipe (18), a warning ball (20) is fixedly installed at the other end of the elastic rope (19), and a through hole (21) penetrating through the inside of the warning ball (20) is formed.

6. A device for detecting the stability of a tunnel vault according to claim 5, characterized in that: An arc-shaped branch pipe (22) is formed in the inside of the rectangular plate (13), one end of the branch pipe (22) is communicated with the ventilation pipe (18), and a guide plate (23) in the shape of "V" is fixedly installed on one side of the scraper (14).

7. A device for detecting the stability of a tunnel vault according to claim 6, characterized in that: A slot is formed in the bottom end of the sliding column (6), and an anti-skid strip (31) is fixedly installed in the slot of the bottom end of the sliding column (6).

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