Hidden karst pipeline detection device

Abstract

The utility model provides a concealed karst pipeline detection device, which relates to the technical field of karst detection and comprises a spherical shell, and a hemispherical upper shell and a hemispherical lower shell are detachably connected. A circular placing plate is fixedly arranged on the upper end face in the lower shell, a first hollow pipe is arranged in the center of the placing plate, the upper end of the first hollow pipe extends to the upper side of the placing plate, and the lower end extends to the bottom of the lower shell, penetrates through the bottom of the lower shell and is fixedly connected with the lower shell; the upper end of the first hollow pipe is connected with a second hollow pipe, and the upper end of the second hollow pipe extends to the top of the upper shell and penetrates through the top of the upper shell to be fixedly connected with the upper shell. A detection instrument is mounted on the fixing plate on the outer side of the first hollow pipe; the side face of the first hollow pipe is provided with a water inlet hole, the center is provided with a threaded rod, the driving mechanism drives the threaded rod to drive a sealing plug outside the threaded rod to rotate and rise to the upper side of the water inlet hole, water enters the lower shell, and the shell dives to avoid obstacles to advance to measure the karst cave. The detection device provided by the utility model ensures smooth advancing through diving, and realizes the measurement of the karst cave.

Description

Technical Field

[0001] The utility model relates to the technical field of karst detection, in particular to a concealed karst pipeline detection device. Background Art

[0002] Underground undercurrents are also called "underground currents". They are water flows with the main characteristics of rivers in caves and underground passages formed in large areas of limestone due to karstification. The spatial distribution of undercurrents is controlled by lithology, geological structure and drainage base level. Undercurrents often develop in the axis of stratum folds, cracks and fractures, the contact between soluble rocks and non-soluble rocks, and near the drainage base level. When tunnel construction passes through karst areas, due to the existence of undercurrents around the tunnel, the ground stress is unevenly distributed and usually has no regular pattern. Tunnel construction disturbance may cause tunnel collapse or even damage the support structure. Karst is inseparable from groundwater. Once the groundwater channel is destroyed, water and mud will burst, which will cause surface cracks, roof collapse, or landslides in severe cases. Therefore, tunnels are very likely to encounter many adverse effects caused by underground undercurrents during construction in karst areas.

[0003] At present, the commonly used hydrogeological detection technology in karst areas is mainly geological advance prediction technology, mainly including geological radar technology, TSP technology, infrared technology, electromagnetic method, etc., which are widely used in tunnel construction. When encountering underground undercurrents, it is necessary to clearly survey the spatial distribution of water in it. The current detection technology seems helpless. The interior of the cave is complicated, which makes it difficult for the detection device to move in the cave, affecting the efficiency and effect of the detection. Utility Model Content

[0004] In view of the above problems, the utility model provides a hidden karst pipeline detection device to solve the problem in the prior art that the interior of the cave is complicated, which makes it difficult for the detection device to move in the cave, affecting the detection efficiency and effect.

[0005] To achieve the above purpose, the technical solution of the utility model is implemented as follows:

[0006] A hidden karst pipeline detection device comprises: a spherical shell, the shell comprising a hemispherical upper shell and a lower shell, and the upper shell and the lower shell are detachably connected;

[0007] A circular placement plate is fixedly provided on the upper end surface of the interior of the lower shell, a first hollow tube is provided at the center of the placement plate, the upper end of the first hollow tube extends to the upper side of the placement plate, the lower end extends to the bottom of the lower shell, penetrates the bottom of the lower shell and is fixedly connected to the lower shell, a fixing plate is provided in the first hollow tube at the same horizontal height as the placement plate; the upper end of the first hollow tube is connected to the lower end of the second hollow tube, the upper end of the second hollow tube extends to the top of the upper shell, penetrates the top of the upper shell and is fixedly connected to the upper shell; a detection instrument is installed on the fixing plate outside the first hollow tube;

[0008] A water inlet hole is provided on the side of the first hollow tube, and a threaded rod is provided in the center. The top end of the threaded rod passes through the center of the fixing plate and extends to the upper side of the fixing plate, and is connected to the driving mechanism installed on the upper side of the fixing plate. The lower end of the threaded rod extends to the lower end of the first hollow tube, and the outer side of the threaded rod is threadedly connected to a circular ring-shaped sealing plug, and the outer periphery of the sealing plug is tightly abutted against the inner wall of the first hollow tube;

[0009] The driving mechanism drives the threaded rod to rotate and rise, driving the sealing plug to rotate and rise, water enters the first hollow tube from below, the sealing plug rises to the upper side of the water inlet hole, water enters the area between the first hollow tube and the lower shell through the water inlet hole, the weight of the lower shell increases, causing the shell to dive to avoid obstacles and measure the cave.

[0010] As a further improvement of the present invention, a ventilation hole is provided on the side of the second hollow tube, and a circular annular guide plate is circumferentially connected to the inner wall of the top of the second hollow tube.

[0011] As a further improvement of the utility model, the upper end surface of the annular guide plate is funnel-shaped.

[0012] As a further improvement of the utility model, a circular top plate is fixedly sleeved on the outer side of the top end of the threaded rod, and the threaded rod rotates and rises to drive the top plate to rise to the upper side of the ventilation hole.

[0013] As a further improvement of the present invention, a drainage hole is provided at the center of the threaded rod, and the drainage hole runs through the top end and the bottom end of the threaded rod.

[0014] As a further improvement of the utility model, a funnel is provided on the upper side of the top plate, and the center of the funnel corresponds to the position of the drainage hole.

[0015] As a further improvement of the utility model, a one-way valve is provided at the top and bottom ends of the drainage hole of the threaded rod, and the opening direction of the one-way valve is from top to bottom.

[0016] As a further improvement of the utility model, the driving mechanism includes a first bevel gear sleeved on the outside of the threaded rod, and the first bevel gear is rotatably connected to the fixed plate, a sliding groove is opened on the surface of the threaded rod, the inner ring of the first bevel gear is fixedly connected to a slider, and the slider is connected to the sliding groove, a driving member is provided on the fixed plate, and the output end of the driving member is fixedly connected to a second bevel gear, and the first bevel gear is meshed with the second bevel gear.

[0017] As a further improvement of the present invention, a gravity block is fixedly provided on the inner bottom wall of the lower shell, and the gravity block is in a truncated cone shape with a through hole in the center, and is sleeved on the outside of the first hollow tube through the center through the through hole.

[0018] As a further improvement of the present invention, the water inlet holes are evenly arranged along the circumference of the tube wall at the same height of the first hollow tube.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The utility model places a shell on the water flow in the cave. Since the shell is light in weight, it will float on the water surface. Under the action of the gravity block, the lower shell will always be located below the upper shell, and the shell can move along the water flow. At the same time, the shell is positioned by GPS. When the shell does not move for a long time, the driving mechanism will start, and the driving mechanism will drive the water inlet part to work, and water will enter the lower shell to increase the weight of the shell. At this time, the drainage part can block the ventilation part, so that when the shell is submerged, the instruments placed on the board can also be used normally, and the shell can avoid obstacles on the upper side after submerging, and the undercurrent under the water surface generally has a faster flow rate, so that the shell can pass more conveniently and safely to measure the cave. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model discloses a complete structural diagram of a concealed karst pipeline detection device according to an embodiment of the utility model.

[0022] Figure 2 The utility model is a schematic diagram of the internal structure of a hidden karst pipeline detection device disclosed in an embodiment.

[0023] Figure 3 The utility model is a schematic structural diagram of the separated state of the lower shell and the upper shell of a concealed karst pipeline detection device disclosed in an embodiment.

[0024] Figure 4 The utility model is a partial structural cross-sectional view of a concealed karst pipeline detection device disclosed in an embodiment of the utility model in the front view direction.

[0025] Figure 5It is a schematic diagram of the connection relationship between the threaded rod and the first bevel gear disclosed in an embodiment of the utility model.

[0026] Description of reference numerals:

[0027] 1. Shell; 11. Lower shell; 12. Upper shell; 13. Placement plate; 2. Gravity block; 3. Water inlet; 31. First hollow tube; 32. Water inlet hole; 33. Sealing plug; 34. Threaded rod; 35. Fixed plate; 4. Driving mechanism; 41. First bevel gear; 42. Slide groove; 43. Sliding block; 44. Driving member; 45. Second bevel gear; 5. Ventilation part; 51. Second hollow tube; 52. Ventilation hole; 6. Drainage part; 61. Top plate; 62. Connection hole; 63. Funnel; 64. Guide plate; 65. One-way valve. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0029] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0031] The utility model is further described in detail below in conjunction with the accompanying drawings:

[0032] like Figure 1-5As shown, a hidden karst pipeline detection device includes a shell 1, which is spherical. The weight of the shell 1 is less than the buoyancy of water. The shell 1 can float on the water surface, which can effectively reduce the contact area with obstacles and reduce the probability of being blocked by obstacles. The shell 1 includes a lower shell 11 and an upper shell 12, and the upper shell 12 is located above the lower shell 11. The lower shell 11 and the upper shell 12 are detachably connected at one end close to each other. A horizontally arranged placement plate 13 is fixedly connected to the upper end surface of the lower shell 11 for sealing the lower shell 11 so that two closed spaces are formed above and below the placement plate 13. The placement plate 13 is used to place detection instruments, such as locators, sensors, built-in power supplies, and other instruments for measuring and observing caves. The inner bottom wall of the lower shell 11 is fixedly connected to a heavy The force block 2 is used to increase the weight of the lower shell 11, lower the center of gravity of the lower shell 11, and prevent the positions of the lower shell 11 and the upper shell 12 from being reversed, which affects the use of the instrument. A water inlet part 3 is arranged in the lower shell 11. When the shell 1 is blocked by an obstacle on the water surface, in this embodiment, the shell 1 can be positioned by GPS to determine the position of the shell 1. When the position of the shell 1 does not move for a long time, it will be determined that it is blocked by an obstacle. Water can be injected into the space under the placement plate 13 to increase the weight of the lower shell 11, so that the shell 1 dives under the water surface to move, which can effectively avoid obstacles on the water surface. A ventilation part 5 is arranged in the upper shell 12, which can improve the ventilation in the upper shell 12 to prevent the detection instrument from overheating and the inability to ventilate, which affects the use of the detection instrument.

[0033] like Figure 2-4 As shown, the water inlet portion 3 includes a first hollow tube 31 fixedly connected to the lower shell 11, and the top end of the first hollow tube 31 extends to the top of the placement plate 13, and the bottom end of the first hollow tube 31 extends to the outside of the lower shell 11. A plurality of water inlet holes 32 are opened on the surface of the first hollow tube 31. A sealing plug 33 for sealing the first hollow tube 31 is provided in the first hollow tube 31, and the sealing plug 33 can be lifted and lowered along the height direction of the first hollow tube 31. The first hollow tube 31 is fixedly connected to a fixing plate 35, and the fixing plate 35 is located at Above the water inlet hole 32, a threaded rod 34 is connected to the inner thread of the fixing plate 35, and the bottom end of the threaded rod 34 extends to the bottom of the sealing plug 33. The threaded rod 34 is rotatably connected to the sealing plug 33. When the threaded rod 34 rotates, the threaded rod 34 can be raised and lowered. When the threaded rod 34 is raised and lowered, it can drive the sealing plug 33 to be raised and lowered. Then when the sealing plug 33 rises to above the water inlet hole 32, water can enter the lower shell 11 through the first hollow tube 31 and the water inlet hole 32, thereby increasing the weight of the lower shell 11 and causing the shell 1 to submerge under the water surface.

[0034] like Figure 2-5As shown, a driving mechanism 4 is provided on the placement plate 13 for driving the threaded rod 34 to rotate, so that the housing 1 can be submerged underwater more conveniently. The driving mechanism 4 includes a first bevel gear 41 sleeved on the surface of the threaded rod 34, and the first bevel gear 41 is rotatably connected to the fixing plate 35. A slide groove 42 is provided on the surface of the threaded rod 34. A slider 43 is fixedly connected to the inner ring of the first bevel gear 41, and the slider 43 is slidably connected in the slide groove 42. A driving member 44 is provided on the placement plate 13. The driving member 44 is a servo motor. The output end of the driving member 44 is fixedly connected to the second bevel gear 45, and the second bevel gear 45 is meshed with the first bevel gear 41. The driving member 44 is started. When the output end of the driving member 44 rotates, the second bevel gear 45 can be driven to rotate, and then the rotation of the second bevel gear 45 can drive the first bevel gear 41 to rotate, and then the rotation of the first bevel gear 41 can drive the threaded rod 34 to rotate, so that water can enter the interior of the lower shell 11 more conveniently.

[0035] like Figure 1-4 As shown, the ventilation part 5 includes a second hollow tube 51 arranged in the upper shell 12, and the top end of the second hollow tube 51 extends to the outside of the upper shell 12 and is fixedly connected to the upper shell 12, the bottom end of the second hollow tube 51 contacts the top end of the first hollow tube 31, and the driving member 44 is fixedly installed in the second hollow tube 51. A plurality of ventilation holes 52 are opened on the surface of the second hollow tube 51, which can conveniently discharge the heat in the upper shell 12 through the ventilation holes 52 and the second hollow tube 51 to prevent affecting the use of the detection instrument.

[0036] like Figure 1-4 As shown, a drainage part 6 is provided in the second hollow tube 51. When water drops from the top of the cave fall into the second hollow tube 51, the water can be collected to prevent the water from damaging the instrument. The drainage part 6 includes a top plate 61 fixedly connected to the top of the threaded rod 34. A connecting hole 62 is provided in the top plate 61. A drainage hole is provided in the threaded rod 34, and the drainage hole penetrates the top and bottom of the threaded rod 34. Water can enter from the top of the drainage hole and finally be discharged through the bottom of the drainage hole. Two one-way valves 65 are provided in the drainage hole, and the two one-way valves 65 are respectively distributed at the top and bottom of the drainage hole, so that water can only flow downward and cannot flow back upward. After water drops into the second hollow tube 51, it flows into the drainage hole through the connecting hole 62, and finally temporarily stores in the drainage hole or is discharged from the drainage hole, so that the water can be collected to prevent the water from damaging the instrument.

[0037] A funnel 63 is provided on the top plate 61, and the funnel 63 is connected to the connecting hole 62. A guide plate 64 is provided at the top of the second hollow tube 51, and the guide plate 64 is funnel-shaped, which can effectively prevent water from flowing along the inner wall of the second hollow tube 51, thereby further preventing water from damaging the instrument;

[0038] When the shell 1 is submerged, the threaded rod 34 moves upward, which can drive the top plate 61 to move upward and move the top plate 61 to above the ventilation hole 52. Then the top plate 61 will block the ventilation hole 52, and water will not be able to enter the upper shell 12, thereby protecting the instruments on the placement plate 13.

[0039] Example:

[0040] Step 1: Place the shell 1 on the water flow in the cave. Since the shell 1 is light in weight, it will float on the water surface;

[0041] Step 2: Under the action of the gravity block 2, the lower shell 11 is always located below the upper shell 12, and then the shell 1 can move along the water flow. During the movement, the detection instrument in the upper shell is cooled through the ventilation hole 52 and the circular hole in the center of the guide plate 64;

[0042] Step 3, the housing 1 is positioned by GPS. When the housing 1 does not move for a long time, the driving mechanism 4 will start, and then the driving mechanism 4 will drive the water inlet part 3 to work, the threaded rod 34 rotates and rises, driving the sealing plug 33 and the top plate 61 to rise, and at the same time pushing the funnel 63 to rise. When the sealing plug 33 rises to the upper side of the water inlet hole 32, the top plate 61 and the funnel 63 rise to the upper side of the ventilation hole, and at this time the drainage part 6 can block the ventilation part 5;

[0043] Step 4: Water enters from the lower end of the first hollow tube 31 and enters the lower shell 11 along the water inlet hole 32, increasing the weight of the shell 1, and the shell 1 sinks;

[0044] Step 5, after the shell 1 is submerged, during the water flow impact process, a small amount of water enters the upper shell 12 from the guide plate 64 at the top of the upper shell 12, is collected in the middle through the funnel 13, and the one-way valve 65 in the threaded rod 34 is opened to discharge the water from the shell 1 from top to bottom.

[0045] Step 6: After diving, the device moves normally, the detection instrument placed on the plate 13 can also be used normally, and the shell 1 can avoid obstacles on it after diving, and the undercurrent under the water surface generally has a faster flow rate, so that the shell 1 can pass more conveniently and safely to measure the cave.

[0046] Advantages of the utility model:

[0047] The utility model places a shell on the water flow in the cave. Since the shell is light in weight, it will float on the water surface. Under the action of the gravity block, the lower shell will always be located below the upper shell, and the shell can move along the water flow. At the same time, the shell is positioned by GPS. When the shell does not move for a long time, the driving mechanism will start, and the driving mechanism will drive the water inlet part to work, and water will enter the lower shell to increase the weight of the shell. At this time, the drainage part can block the ventilation part, so that when the shell is submerged, the instruments placed on the board can also be used normally, and the shell can avoid obstacles on the upper side after submerging, and the undercurrent under the water surface generally has a faster flow rate, so that the shell can pass more conveniently and safely to measure the cave.

[0048] The above are only preferred embodiments of the present invention and do not limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A concealed karst pipeline detection device, characterized in that: include: A spherical shell, the shell comprising a hemispherical upper shell and a lower shell, and the upper shell and the lower shell are detachably connected; A circular placement plate is fixedly provided on the upper end surface of the interior of the lower shell, a first hollow tube is provided at the center of the placement plate, the upper end of the first hollow tube extends to the upper side of the placement plate, the lower end extends to the bottom of the lower shell, penetrates the bottom of the lower shell and is fixedly connected to the lower shell, a fixing plate is provided in the first hollow tube at the same horizontal height as the placement plate; the upper end of the first hollow tube is connected to the lower end of the second hollow tube, the upper end of the second hollow tube extends to the top of the upper shell, penetrates the top of the upper shell and is fixedly connected to the upper shell; a detection instrument is installed on the fixing plate outside the first hollow tube; A water inlet hole is provided on the side of the first hollow tube, and a threaded rod is provided in the center. The top end of the threaded rod passes through the center of the fixing plate and extends to the upper side of the fixing plate, and is connected to the driving mechanism installed on the upper side of the fixing plate. The lower end of the threaded rod extends to the lower end of the first hollow tube, and the outer side of the threaded rod is threadedly connected to a circular ring-shaped sealing plug, and the outer periphery of the sealing plug is tightly abutted against the inner wall of the first hollow tube; The driving mechanism drives the threaded rod to rotate and rise, driving the sealing plug to rotate and rise, water enters the first hollow tube from below, the sealing plug rises to the upper side of the water inlet hole, water enters the area between the first hollow tube and the lower shell through the water inlet hole, the weight of the lower shell increases, causing the shell to dive to avoid obstacles and measure the cave.

2. The concealed karst pipeline detection device according to claim 1 is characterized in that: A ventilation hole is provided on the side of the second hollow tube, and a circular ring-shaped guide plate is circumferentially connected to the inner wall of the top of the second hollow tube.

3. The hidden karst pipeline detection device according to claim 2 is characterized in that: The upper end surface of the annular guide plate is funnel-shaped.

4. The concealed karst pipeline detection device according to claim 2 is characterized in that: A circular top plate is fixedly sleeved on the outer side of the top end of the threaded rod, and the threaded rod rotates and rises to drive the top plate to rise to the upper side of the ventilation hole.

5. The hidden karst pipeline detection device according to claim 4 is characterized in that: The threaded rod is provided with a drainage hole at the center, and the drainage hole runs through the top end and the bottom end of the threaded rod.

6. The concealed karst pipeline detection device according to claim 5 is characterized in that: A funnel is provided on the upper side of the top plate, and the center of the funnel corresponds to the position of the drainage hole.

7. The hidden karst pipeline detection device according to claim 5 is characterized in that: A one-way valve is provided at the top and bottom of the drainage hole of the threaded rod, and the opening direction of the one-way valve is from top to bottom.

8. The concealed karst pipeline detection device according to claim 1, characterized in that: The driving mechanism includes a first bevel gear sleeved on the outside of the threaded rod, and the first bevel gear is rotatably connected to the fixed plate, a sliding groove is opened on the surface of the threaded rod, and a slider is fixedly connected to the inner ring of the first bevel gear, and the slider is connected to the sliding groove. A driving member is provided on the fixed plate, and a second bevel gear is fixedly connected to the output end of the driving member, and the first bevel gear is meshed with the second bevel gear.

9. The concealed karst pipeline detection device according to claim 1, characterized in that: A gravity block is fixedly arranged on the inner bottom wall of the lower shell, and the gravity block is in a truncated cone shape with a through hole at the center, and is sleeved on the outer side of the first hollow tube through the center through hole.

10. The concealed karst pipeline detection device according to claim 1, characterized in that: The water inlet holes are evenly arranged along the circumference of the tube wall at the same height of the first hollow tube.

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