Underground water level measuring device

Abstract

The invention provides an underground water level measuring device, and belongs to the technical field of underground water level measurement. The underground water level measuring device comprises a supporting table and supporting legs, a measuring mechanism is arranged at the bottom of the supporting table and comprises a supporting frame, a lifting cavity, a hinge block and a driving cavity, the supporting frame is fixedly installed on the surfaces of the supporting legs, and a measuring shell is slidably arranged in the supporting frame in a sleeved mode; and the top of the measuring shell is open. According to the device, the measuring mechanism is arranged, the hinge rods rotate with the hinge blocks as the circle center, the multiple hinge rods are matched, the measuring outer shell and the measuring inner shell are both located at the center axis position of a well, and therefore the problem that the swing amplitude of a measuring rope is larger and larger as the descending depth of the measuring rope is larger and larger is solved. And the situation that the measuring outer shell and the measuring inner shell collide with the inner wall of a drilling well due to swinging of the measuring rope is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of groundwater level measurement, and in particular to a groundwater level measurement device. Background Art

[0002] Groundwater level measurement is an important task, which is used to determine the location of the groundwater surface. Through groundwater level measurement, people can carry out various activities such as water resource assessment and geological research. For water level measurement, the most commonly used method is the rope method. The principle is to lower the rope in the borehole until it touches the water level. The groundwater level can be known by the descending length of the rope.

[0003] When the existing equipment is in use, due to the softness of the measuring rope, heavy objects are usually hung on the measuring rope to try to avoid the swing of the measuring rope. However, as the measuring rope descends deeper and deeper, the swing amplitude of the measuring rope becomes larger and larger. This method obviously cannot meet people's needs, resulting in the end of the measuring rope frequently colliding with the inner wall of the borehole. In severe cases, the water level sensing equipment carried by the measuring rope may be damaged. Summary of the invention

[0004] In order to make up for the above deficiencies, the present invention provides a groundwater level measuring device that overcomes the above technical problems or at least partially solves the above problems.

[0005] The present invention is achieved in that: The present invention provides a groundwater level measuring device, comprising a support table and support legs, wherein a measuring mechanism is arranged at the bottom of the support table, and the measuring mechanism comprises: A support frame, wherein the support frame is fixedly mounted on the surface of the support leg, an inner sliding sleeve of the support frame is provided with a measuring outer shell, the top of the measuring outer shell is open, and an inner sliding sleeve of the measuring outer shell is provided with a measuring inner shell; A lifting chamber, the lifting chamber is opened inside the measuring inner shell, the internal sliding sleeve of the lifting chamber is provided with a lifting plate, a lifting rod is fixedly installed at the bottom of the lifting plate, and the bottom of the lifting rod is fixedly connected to the bottom of the inner wall of the measuring outer shell; An articulated block, the articulated block is fixedly mounted on the surface of the measuring inner shell, a plurality of articulated blocks are provided, an articulated rod is articulatedly mounted on the surface of the articulated block, a roller is rotatably sleeved on one end of the articulated rod, and the other end of the articulated rod penetrates into the interior of the measuring inner shell; A driving cavity is provided inside the measuring inner shell, a driving rod is provided inside the driving cavity for sliding sleeve, a driving groove is provided inside the driving rod, a driving shaft is fixedly mounted on the surface of the hinged rod, and the driving shaft is slidably sleeved inside the driving groove.

[0006] In a preferred embodiment, a driving plate is provided on the internal sliding sleeve of the lifting chamber, and the driving plate is located above the lifting plate. The driving plate and the driving rod are fixedly connected. A bidirectional screw rod is rotatably installed inside the lifting chamber, and the driving plate and the lifting plate are both sleeved on the surface of the bidirectional screw rod and are threadedly connected to the bidirectional screw rod.

[0007] In a preferred solution, an unwinding rack is fixedly installed on the top of the support table, and sliding grooves are provided on the left and right sides of the inner wall of the unwinding rack. Slide tables are slidably installed inside the two slide grooves, and unwinding plates are rotatably installed on the opposite sides of the two slide tables. An unwinding rod is fixedly installed between the two unwinding plates, and a measuring rope is wound around the surface of the unwinding rod, and one end of the measuring rope is fixedly connected to the top of the measuring inner shell.

[0008] In a preferred embodiment, a limiting mechanism is provided inside the support frame, and the limiting mechanism includes a limiting cavity, which is opened inside the support frame, and the internal sliding sleeve of the limiting cavity is provided with two semicircular rods, and limiting rods are fixedly installed on opposite sides of the two semicircular rods, and the limiting rods are located below the measuring housing, and toothed plates are fixedly installed on opposite sides of the two semicircular rods.

[0009] In a preferred solution, an annular groove is provided on the side of the unwinding plate close to the slide, an annular plate is rotatably sleeved inside the annular groove, the annular plate and the slide are fixedly connected, a limiting groove is provided on the inner wall of the slide, a limiting strip is fixedly installed on the surface of the slide, the limiting strip is slidably sleeved inside the limiting groove, a travel block is fixedly installed on the inner wall of the slide, and a motor is fixedly installed on the left side of one of the slides.

[0010] In a preferred solution, a rotating cavity is provided inside one of the slides, a rotating table is rotatably installed inside the rotating cavity, the center of the rotating table coincides with the center of the unwinding plate, the output end of the motor is fixedly connected to the left side of the rotating table, an unlocking block is integrally formed on the surface of the rotating table, a travel groove is provided on the side of the unwinding plate close to the slide, a travel shaft is provided on the internal sliding sleeve of the travel groove, and the left side of the travel shaft is fixedly connected to the right side of the rotating table.

[0011] In a preferred solution, a positioning cavity is provided on the front side of one of the slides, and the positioning cavity is communicated with the rotating cavity. A limiting groove is provided on the inner wall of one of the slide grooves, and a moving cavity is provided on the front side of the limiting groove. A positioning block is provided on the internal sliding sleeve of the moving cavity, and the rear side of the positioning block penetrates into the interior of the positioning cavity and the rotating cavity. A moving spring is fixedly installed on the front side of the inner wall of the moving cavity, and the rear side of the moving spring is fixedly connected to the front side of the positioning block.

[0012] In a preferred solution, a limiting spring is fixedly installed at the bottom of the inner wall of the slide groove, the top of the limiting spring is fixedly connected to the bottom of the slide, a driving screw is fixedly installed at the bottom of the slide, a gear is rotatably installed inside the support frame, the gear is meshingly connected to the toothed plate, a sleeve is fixedly installed on the top of the gear, the sleeve is sleeved on the surface of the driving screw, and the sleeve and the driving screw are threadedly connected.

[0013] In a preferred embodiment, a blocking mechanism is arranged inside the measuring inner shell, and the blocking mechanism includes a buoyancy rod, and the buoyancy rod is slidably sleeved inside the measuring inner shell, and a buoyancy plate is fixedly installed on the bottom of the buoyancy rod. A blocking cavity is opened inside the measuring inner shell, and the blocking cavity and the driving cavity are staggered. The internal sliding sleeve of the blocking cavity is provided with a blocking plate, and the blocking plate is fixedly sleeved on the surface of the buoyancy rod.

[0014] In a preferred solution, a changing groove is provided on the surface of the blocking plate, and the shape of the changing groove is set to be inclined. The internal sliding sleeve of the changing groove is provided with a changing shaft, and the surface of the changing shaft is fixedly provided with an blocking frame, and the blocking frame penetrates the outer wall of the measuring inner shell, and the inner cavity of the blocking frame is fixedly installed with a blocking spring, and the end of the blocking spring away from the central axis of the measuring inner shell is fixedly installed with a blocking head, the top of the buoyancy rod is fixedly installed with a first contact piece, and the top of the blocking cavity is fixedly installed with a second contact piece.

[0015] The invention provides a groundwater level measuring device, which has the following beneficial effects: 1. By setting up a measuring mechanism, the articulated rod rotates with the articulated block as the center of the circle. Through the cooperation of multiple articulated rods, the measuring outer shell and the measuring inner shell are both located at the central axis position of the drilling well, thereby avoiding the problem that the swing amplitude of the measuring rope becomes larger and larger as the depth of the measuring rope descends deeper and deeper. Compared with the prior art, the swing of the measuring rope is prevented from causing the measuring outer shell and the measuring inner shell to collide with the inner wall of the drilling well.

[0016] 2. By setting a limiting mechanism, in the initial state, since the limiting rod is located below the measuring shell, the bottom of the measuring shell is in contact with the limiting rod, and the measuring shell and the measuring inner shell are supported by the limiting rod and cannot drop, so that when not in use, the measuring shell and the measuring inner shell will not be in a relative movement, and the hinged rod will not be in an unfolded state, thereby saving space and reducing the possibility of damage to the hinged rod due to accidental collision.

[0017] 3. By setting up a resistance mechanism, since the interior of the buoyancy plate is hollow, the buoyancy plate is affected by buoyancy to drive the buoyancy rod to move upward relative to the measuring inner shell, so that the change-direction shaft drives the resistance frame and the resistance head to move radially away from the outer side of the measuring inner shell. The resistance head is made of a material with greater friction, so that after the resistance head contacts the inner wall of the well, the friction between the resistance head and the inner wall of the well reduces the influence of the up and down fluctuations of the water flow, thereby improving the accuracy of the measurement data. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure provided by an embodiment of the present invention.

[0020] Figure 2 An exploded view of an unwinding plate and a slide table is provided for an embodiment of the present invention.

[0021] Figure 3 A partial cross-sectional view of an unwinding stand is provided for an embodiment of the present invention.

[0022] Figure 4 An exploded view of a rotating table and a sliding table is provided for an embodiment of the present invention.

[0023] Figure 5 An exploded view of a drive screw and a sleeve is provided for an embodiment of the present invention.

[0024] Figure 6 A partial cross-sectional view of a support frame is provided for an embodiment of the present invention.

[0025] Figure 7 A partial cross-sectional view of a measurement housing is provided for an embodiment of the present invention.

[0026] Figure 8 A partial cross-sectional view of a measuring outer shell and a measuring inner shell viewed from below is provided for an embodiment of the present invention.

[0027] Fig. 9 An exploded view of a direction-changing shaft and a direction-changing groove is provided for an embodiment of the present invention.

[0028] Fig.10 A schematic diagram of an articulated rod and a blocking frame in use is provided for an embodiment of the present invention.

[0029] In the figure: 1, support table; 2, support leg; 301, support frame; 302, measuring outer shell; 303, measuring inner shell; 304, lifting chamber; 305, lifting plate; 306, lifting rod; 307, hinge block; 308, hinge rod; 309, roller; 310, driving chamber; 311, driving rod; 312, driving groove; 313, driving shaft; 314, driving plate; 315, two-way screw rod; 316, unwinding frame; 317, slide groove; 318, slide table; 319, unwinding plate; 320, measuring rope; 401, limiting chamber; 402, semicircular rod; 403, limiting rod; 404, tooth plate; 405, annular groove; 406, annular plate; 407, limit groove ;408, limit strip;409, travel block;410, motor;411, rotating chamber;412, rotating table;413, unlocking block;414, travel slot;415, travel shaft;416, positioning chamber;417, limiting slot;418, moving chamber;419, positioning block;420, moving spring;421, limiting spring;422, driving screw;423, gear;424, sleeve;501, buoyancy rod;502, buoyancy plate;503, blocking chamber;504, blocking plate;505, change direction slot;506, change direction shaft;507, blocking frame;508, blocking spring;509, blocking head;510, first contact piece;511, second contact piece. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example 1: Reference Figure 1-Figure 10The present invention provides a technical solution: a groundwater level measuring device, comprising a support table 1 and a support leg 2, a measuring mechanism is arranged at the bottom of the support table 1, the measuring mechanism comprises a support frame 301, a lifting chamber 304, a hinge block 307 and a driving chamber 310, the support frame 301 is fixedly mounted on the surface of the support leg 2, the inner sliding sleeve of the support frame 301 is provided with a measuring shell 302, the top of the measuring shell 302 is opened, the inner sliding sleeve of the measuring shell 302 is provided with a measuring inner shell 303, the lifting chamber 304 is opened inside the measuring inner shell 303, the inner sliding sleeve of the lifting chamber 304 is provided with a lifting plate 305, the bottom of the lifting plate 305 is fixedly mounted with a lifting rod 306, the bottom of the lifting rod 306 and the bottom of the inner wall of the measuring shell 302 The hinge block 307 is fixedly mounted on the surface of the measuring inner shell 303. The hinge block 307 is provided with a plurality of hinge blocks. A hinge rod 308 is hingedly mounted on the surface of the hinge block 307. A roller 309 is rotatably sleeved on one end of the hinge rod 308. The other end of the hinge rod 308 penetrates into the interior of the measuring inner shell 303. A driving cavity 310 is provided inside the measuring inner shell 303. A driving cavity 310 is slidably sleeved with a driving rod 311 inside the driving cavity 310. A driving groove 312 is provided inside the driving rod 311. A driving shaft 313 is fixedly mounted on the surface of the hinge rod 308. The driving shaft 313 is slidably sleeved inside the driving groove 312. A driving plate 314 is slidably sleeved inside the lifting cavity 304. The driving plate 314 is located above the lifting plate 305. 14 is fixedly connected to the driving rod 311, and a bidirectional screw rod 315 is rotatably installed inside the lifting chamber 304. The driving plate 314 and the lifting plate 305 are both sleeved on the surface of the bidirectional screw rod 315 and are both threadedly connected to the bidirectional screw rod 315. By setting a measuring mechanism, when the measuring outer shell 302 and the measuring inner shell 303 are inside the drilling well, since the measuring inner shell 303 is pulled by the measuring rope 320, the weight of the measuring outer shell 302 is heavier, so that the measuring outer shell 302 drives the lifting rod 306 and the lifting plate 305 to move downward relative to the measuring inner shell 303. Due to the threaded connection between the lifting plate 305 and the bidirectional screw rod 315, the bidirectional screw rod 315 rotates. Since the driving plate 314 is threadedly sleeved on the other end of the bidirectional screw rod 315 in the opposite direction of the thread direction, The driving plate 314 moves upward, thereby driving the driving rod 311 to move upward, and the inner wall of the driving groove 312 squeezes the driving shaft 313, so that the hinge rod 308 rotates with the hinge block 307 as the center of the circle, so that the end of the hinge rod 308 with the roller 309 rotates and moves in the direction away from the measuring inner shell 303 until the roller 309 contacts the inner wall of the drilling well. After being blocked by the inner wall of the drilling well, the measuring outer shell 302 can no longer move downward relative to the measuring inner shell 303. At this time, through the cooperation of multiple hinged rods 308, the measuring outer shell 302 and the measuring inner shell 303 are both at the central axis position of the drilling well, thereby avoiding the problem that the swing amplitude of the measuring rope 320 becomes larger and larger as the depth of the measuring rope 320 descends deeper and deeper. Compared with the prior art,This prevents the swing of the measuring rope 320 from causing the measuring outer shell 302 and the measuring inner shell 303 to collide with the inner wall of the well.

[0032] Reference Figure 1-Figure 10 A reel 316 is fixedly installed on the top of the support table 1, and slide grooves 317 are provided on the left and right sides of the inner wall of the reel 316. Slide tables 318 are slidably installed inside the two slide grooves 317, and unwinding plates 319 are rotatably installed on the opposite sides of the two slide tables 318. An unwinding rod is fixedly installed between the two unwinding plates 319, and a measuring rope 320 is wrapped around the surface of the unwinding rod. One end of the measuring rope 320 is fixedly connected to the top of the measuring inner shell 303. By setting the unwinding rack 316, when the unwinding plate 319 rotates, the unwinding rod is driven to rotate, one end of the measuring rope 320 is fixed to the surface of the unwinding rod, and the other end is fixedly connected to the top of the measuring inner shell 303, so that the unwinding rod drives the measuring rope 320 to unwind, so that the measuring rope 320 drives the measuring inner shell 303 to move downward inside the drilling well.

[0033] Embodiment 2: In the above embodiment, the measuring mechanism can ensure that the soft rope drives the measuring outer shell 302 and the measuring inner shell 303 to be in a central position when they descend in the drilling well. However, before entering the drilling well, the staff needs to manually make the measuring inner shell 303 and the measuring outer shell 302 in an initial state without relative movement to ensure that the articulated rod 308 is unfolded after entering the drilling well. This is inconvenient for the staff to use and needs to be improved.

[0034] Reference Figure 1-Figure 10 , the difference between this embodiment and the first embodiment is that a limiting mechanism is provided inside the support frame 301, and the limiting mechanism includes a limiting cavity 401, which is opened inside the support frame 301, and the internal sliding sleeve of the limiting cavity 401 is provided with two semicircular rods 402, and limiting rods 403 are fixedly installed on opposite sides of the two semicircular rods 402, and the limiting rods 403 are located below the measuring shell 302, and toothed plates 404 are fixedly installed on opposite sides of the two semicircular rods 402. By setting the limiting mechanism, in the initial state, since the limiting rods 403 are located below the measuring shell 302, the bottom of the measuring shell 302 contacts the limiting rods 403, and the measuring shell 302 and the measuring inner shell 303 are supported by the limiting rods 403 and cannot descend, so that when not in use, the measuring shell 302 and the measuring inner shell 303 will not be in a state of relative movement, and the hinged rod 308 will not be in an unfolded state, thereby saving space and reducing the possibility of damage to the hinged rod 308 due to accidental collision.

[0035] Reference Figure 1-Figure 10, an annular groove 405 is provided on the side of the unwinding plate 319 close to the slide 318, and an annular plate 406 is rotatably sleeved inside the annular groove 405, and the annular plate 406 is fixedly connected to the slide 318, and a limiting groove 407 is provided on the inner wall of the slide 317, and a limiting strip 408 is fixedly installed on the surface of the slide 318, and the limiting strip 408 is slidably sleeved inside the limiting groove 407, and a travel block 409 is fixedly installed on the inner wall of the slide 317, and a motor 410 is fixedly installed on the left side of one of the slides 318. By setting the annular groove 405 and the annular plate 406, it can be ensured that the unwinding plate 319 can slide up and down with the slide 318, and the rotation of the unwinding plate 319 will not affect the slide 318, and the cooperation of the limiting strip 408 and the limiting groove 407 makes the slide 318 only be able to move vertically up and down along the slide 317, and the setting of the travel block 409 limits the downward movement of the slide 318.

[0036] Reference Figure 1-Figure 10 A rotating chamber 411 is provided inside one of the slides 318, a rotating table 412 is rotatably installed inside the rotating chamber 411, the center of the rotating table 412 coincides with the center of the unwinding plate 319, the output end of the motor 410 is fixedly connected to the left side of the rotating table 412, an unlocking block 413 is integrally formed on the surface of the rotating table 412, a travel groove 414 is provided on the side of the unwinding plate 319 close to the slide 318, a travel shaft 415 is provided on the internal sliding sleeve of the travel groove 414, and the left side of the travel shaft 415 and the rotating table 412 are connected. The right side of the rotating table 412 is fixedly connected, and by setting a rotating table 412, the staff starts the motor 410 to drive the rotating table 412 to rotate. Since the stroke shaft 415 is at the starting end of the stroke groove 414, and the shape trajectory of the stroke groove 414 is a part of the rotation trajectory of the stroke shaft 415, when the rotating table 412 drives the stroke shaft 415 to rotate initially, the stroke shaft 415 will not squeeze the stroke groove 414, until the stroke shaft 415 moves to the end end of the stroke groove 414, the rotating table 412 will drive the unwinding plate 319 to rotate.

[0037] Reference Figure 1-Figure 10A positioning cavity 416 is provided on the front side of one of the slides 318, and the positioning cavity 416 is connected to the rotating cavity 411. A limiting groove 417 is provided on the inner wall of one of the slide grooves 317, and a moving cavity 418 is provided on the front side of the limiting groove 417. A positioning block 419 is provided on the internal sliding sleeve of the moving cavity 418, and the rear side of the positioning block 419 penetrates into the interior of the positioning cavity 416 and the rotating cavity 411. A moving spring 420 is fixedly installed on the front side of the inner wall of the moving cavity 418, and the rear side of the moving spring 420 is fixedly connected to the front side of the positioning block 419. A limiting spring 421 is fixedly installed on the bottom of the inner wall of the slide groove 317, and the top of the limiting spring 421 is fixedly connected to the bottom of the slide 318. A driving wire is fixedly installed on the bottom of the slide 318 Rod 422, the internal rotation of the support frame 301 is installed with a gear 423, the gear 423 and the toothed plate 404 are meshed and connected, and a sleeve 424 is fixedly installed on the top of the gear 423, and the sleeve 424 is sleeved on the surface of the driving screw rod 422, and the sleeve 424 and the driving screw rod 422 are threadedly connected. By setting a positioning cavity 416 and a positioning block 419, the positioning block 419 is composed of two left and right wedge blocks, the bottom of the left wedge block is set to an inclined shape, and the top of the right wedge block is set to an inclined shape. In the initial state, the left part of the positioning block 419 penetrates into the interior of the positioning cavity 416, and the right part of the positioning block 419 penetrates into the interior of the rotating cavity 411, and the equipment is moved to the top of the drilling well. When the rotating table 412 rotates, it drives the unlocking block 41 3, since a part of the rotation track of the unlocking block 413 exceeds the interior of the slide 318 and coincides with the limiting groove 417, the unlocking block 413 squeezes the right side of the positioning block 419. Since the top shape of the right side of the positioning block 419 is set to be inclined, the positioning block 419 is retracted into the interior of the moving cavity 418, and the left side of the positioning block 419 is separated from the interior of the positioning cavity 416. After the slide 318 loses the restriction of the positioning block 419, it drives the unwinding frame 316 and the unwinding rod to move downward until they contact the travel block 409. In this process, the driving screw 422 is driven to move downward through the slide 318, and the sleeve 424 is threadedly connected to the driving screw 422, so that the sleeve 424 drives the gear 423 to rotate. The gear 423 and the toothed plate 404 are meshed and connected, so that the two limiting rods 403 move in opposite directions, so that the measuring shell 302 loses its support. At this time, the unwinding rod has been driven by the slide 318 to drop a preset distance, so that the measuring rope 320 has a certain redundant part, and the measuring shell 302 and the measuring inner shell 303 fall into the borehole together. Since bar magnets are installed on the inner wall of the measuring shell 302 and the surface of the measuring inner shell 303, the two will not move relative to each other before falling into the borehole. After reaching the inside of the borehole, the measuring shell 302 and the measuring inner shell 303 move relative to each other through the pulling of the measuring rope 320 and the dead weight of the measuring shell 302, and the hinged rod 308 is unfolded.Thus, the measuring outer shell 302 and the measuring inner shell 303 are kept from moving relative to each other before entering the borehole, ensuring that the hinged rod 308 is unfolded after entering the borehole.

[0038] Embodiment three: In the above embodiment, the limiting mechanism can realize the relative movement of the measuring outer shell 302 and the measuring inner shell 303 after entering the inside of the borehole. However, when measuring the groundwater level, the groundwater is always in a fluctuating state, which will affect the accuracy of the measurement. The above-mentioned measuring mechanism can realize the centering of the measuring outer shell 302 and the measuring inner shell 303, and also ensure that the measuring outer shell 302 will not fluctuate left and right with the water flow. However, the fluctuation in the up and down directions will still affect the accuracy of the measurement, which needs to be improved.

[0039] Reference Figure 1-Figure 10The difference between this embodiment and the first and second embodiments is that a blocking mechanism is arranged inside the measuring inner shell 303, and the blocking mechanism includes a buoyancy rod 501, and the buoyancy rod 501 is slidably sleeved inside the measuring inner shell 303, and a buoyancy plate 502 is fixedly installed at the bottom of the buoyancy rod 501, and a blocking cavity 503 is provided inside the measuring inner shell 303, and the blocking cavity 503 and the driving cavity 310 are staggered, and a blocking plate 504 is slidably sleeved inside the blocking cavity 503, and the blocking plate 504 is fixedly sleeved on the surface of the buoyancy rod 501, and a change-of-direction groove 505 is provided on the surface of the change-of-direction groove 505, and the shape of the change-of-direction groove 505 is arranged to be inclined. The inner sliding sleeve of the diverting groove 505 is oblique and is provided with a diverting shaft 506. The surface of the diverting shaft 506 is fixedly provided with an anti-movement frame 507. The anti-movement frame 507 penetrates the outer wall of the measuring inner shell 303. The inner cavity of the anti-movement frame 507 is fixedly installed with an anti-movement spring 508. The end of the anti-movement spring 508 away from the central axis of the measuring inner shell 303 is fixedly installed with an anti-movement head 509. The top of the buoyancy rod 501 is fixedly installed with a first contact piece 510. The top of the anti-movement cavity 503 is fixedly installed with a second contact piece 511. By setting the anti-movement mechanism, when the measuring outer shell 302 moves to a preset position inside the drilling well, the buoyancy plate 502 is pre-installed with the water. The buoyancy plate 502 is hollow inside, and the buoyancy plate 502 is affected by the buoyancy to drive the buoyancy rod 501 to move upward relative to the measuring inner shell 303, so that the blocking plate 504 moves upward, and the inner wall of the change-direction groove 505 squeezes the change-direction shaft 506, so that the change-direction shaft 506 drives the blocking frame 507 and the blocking head 509 to move radially away from the outer side of the measuring inner shell 303. The blocking head 509 is made of a material with a large friction force, so that after the blocking head 509 contacts the inner wall of the well, the friction between the blocking head 509 and the inner wall of the well is used to reduce the influence of the up and down fluctuation of the water flow, thereby improving the accuracy of the measurement data. The buoyancy rod 501 is relatively long to prevent the buoyancy plate 502 from contacting the bottom of the measuring shell 302 when the buoyancy rod 501 moves upward. After the first contact piece 510 contacts the second contact piece 511, an external buzzer or alarm will sound an alarm to remind the staff. This is a prior art and will not be described in detail here. Moreover, since the movement distance of the first contact piece 510 to the second contact piece 511 is fixed, the staff calculates the groundwater level data by measuring the length of the descent of the measuring rope 320 and the distance between the buoyancy plate 502 and the top of the measuring inner shell 303 when the first contact piece 510 and the second contact piece 511 are in contact.

[0040] Specifically, the working process or working principle of the groundwater level measuring device is as follows: when in use, the device is moved to the top of the well, and the staff starts the motor 410 to drive the rotating table 412 to rotate, and drives the unlocking block 413 to rotate. Since a part of the rotation trajectory of the unlocking block 413 exceeds the interior of the slide 318 and coincides with the limiting groove 417, the unlocking block 413 squeezes the right side of the positioning block 419. Since the shape of the top of the right side of the positioning block 419 is set to be inclined, the positioning block 419 is retracted into the interior of the moving cavity 418, and the left side of the positioning block 419 is detached from the interior of the positioning cavity 416. After the slide 318 loses the restriction of the positioning block 419, it drives the unwinding frame 316 and the unwinding rod to move downward until they are aligned with the travel block 418. 09, during which the driving screw 422 is driven to move downward by the slide 318, and the sleeve 424 is threadedly connected to the driving screw 422, so that the sleeve 424 drives the gear 423 to rotate, and the meshing connection between the gear 423 and the toothed plate 404 causes the two limiting rods 403 to move in opposite directions, so that the measuring housing 302 loses its support. At this time, the unwinding rod has been driven by the slide 318 to drop a preset distance, so that the measuring rope 320 has a certain redundant part, and the measuring housing 302 and the measuring inner housing 303 fall into the borehole together. Since bar magnets are installed on the inner wall of the measuring housing 302 and the surface of the measuring inner housing 303, the two will not move relative to each other before they fall into the borehole, until After reaching the inside of the well, since the measuring inner shell 303 is pulled by the measuring rope 320, the measuring outer shell 302 is heavier, so the measuring outer shell 302 drives the lifting rod 306 and the lifting plate 305 to move downward relative to the measuring inner shell 303. Due to the threaded connection between the lifting plate 305 and the bidirectional screw rod 315, the bidirectional screw rod 315 rotates. Since the driving plate 314 is threadedly sleeved on the other end of the bidirectional screw rod 315 in the opposite direction of the thread, the driving plate 314 moves upward, thereby driving the driving rod 311 to move upward. The inner wall of the driving groove 312 squeezes the driving shaft 313, so that the hinged rod 308 rotates with the hinge block 307 as the center of the circle, so that the end of the hinged rod 308 with the roller 309 rotates in the direction away from the measuring inner shell 303. The measuring outer shell 302 can no longer move downward relative to the measuring inner shell 303 after being obstructed by the inner wall of the well. At this time, the measuring outer shell 302 and the measuring inner shell 303 are both located at the central axis position of the well through the cooperation of multiple hinged rods 308. When the rotating table 412 rotates in the initial state, since the stroke shaft 415 is at the starting end of the stroke groove 414, and the shape trajectory of the stroke groove 414 is a part of the rotation trajectory of the stroke shaft 415, when the rotating table 412 drives the stroke shaft 415 to rotate at the beginning, the stroke shaft 415 will not squeeze the stroke groove 414 until the stroke shaft 415 moves to the end end of the stroke groove 414. Then the rotating table 412 will drive the unwinding plate 319 to rotate.At this time, the measuring inner shell 303 is already inside the well. When the unwinding plate 319 rotates, it drives the unwinding rod to rotate. One end of the measuring rope 320 is fixed to the surface of the unwinding rod, and the other end is fixedly connected to the top of the measuring inner shell 303, so that the unwinding rod drives the measuring rope 320 to unwind, so that the measuring rope 320 drives the measuring inner shell 303 to move downward inside the well. After the measuring outer shell 302 moves to the preset position inside the well, the buoyancy plate 502 contacts the water flow in advance. The interior of 502 is hollow. The buoyancy plate 502 is affected by the buoyancy force and drives the buoyancy rod 501 to move upward relative to the measuring inner shell 303, so that the blocking plate 504 moves upward. The inner wall of the direction-changing groove 505 squeezes the direction-changing shaft 506, so that the direction-changing shaft 506 drives the blocking frame 507 and the blocking head 509 to move radially away from the outer side of the measuring inner shell 303. After the first contact piece 510 contacts the second contact piece 511, an external buzzer or alarm will sound an alarm to remind the staff.

Claims

1. A groundwater level measuring device, comprising a support table (1) and support legs (2), characterized in that: A measuring mechanism is provided at the bottom of the support table (1), and the measuring mechanism comprises: A support frame (301), the support frame (301) being fixedly mounted on the surface of the support leg (2), the inner sliding sleeve of the support frame (301) being provided with a measuring outer shell (302), the top of the measuring outer shell (302) being open, and the inner sliding sleeve of the measuring outer shell (302) being provided with a measuring inner shell (303); A lifting chamber (304), the lifting chamber (304) being opened inside the measuring inner shell (303), the internal sliding sleeve of the lifting chamber (304) being provided with a lifting plate (305), the bottom of the lifting plate (305) being fixedly mounted with a lifting rod (306), the bottom of the lifting rod (306) being fixedly connected to the bottom of the inner wall of the measuring outer shell (302); A hinge block (307), the hinge block (307) being fixedly mounted on the surface of the measuring inner shell (303), a plurality of hinge blocks (307) being provided, a hinge rod (308) being hingedly mounted on the surface of the hinge block (307), one end of the hinge rod (308) being rotatably sleeved with a roller (309), and the other end of the hinge rod (308) penetrating into the interior of the measuring inner shell (303); A driving cavity (310) is provided inside the measuring inner shell (303), a driving rod (311) is slidably sleeved inside the driving cavity (310), a driving groove (312) is provided inside the driving rod (311), a driving shaft (313) is fixedly mounted on the surface of the hinged rod (308), and the driving shaft (313) is slidably sleeved inside the driving groove (312).

2. A groundwater level measuring device according to claim 1, characterized in that: The lifting chamber (304) is internally slidably sleeved with a driving plate (314), the driving plate (314) being located above the lifting plate (305), the driving plate (314) being fixedly connected to the driving rod (311), the lifting chamber (304) being internally rotatably mounted with a bidirectional screw rod (315), the driving plate (314) and the lifting plate (305) both being sleeved on the surface of the bidirectional screw rod (315), and both being threadedly connected to the bidirectional screw rod (315).

3. A groundwater level measuring device according to claim 1, characterized in that: A reeling frame (316) is fixedly installed on the top of the support table (1), and a slide groove (317) is provided on the left and right sides of the inner wall of the reeling frame (316), and a slide table (318) is slidably installed inside the two slide grooves (317), and an unwinding plate (319) is rotatably installed on the opposite side of the two slide tables (318), and an unwinding rod is fixedly installed between the two unwinding plates (319), and a measuring rope (320) is wound around the surface of the unwinding rod, and one end of the measuring rope (320) is fixedly connected to the top of the measuring inner shell (303).

4. A groundwater level measuring device according to claim 1, characterized in that: A limiting mechanism is arranged inside the support frame (301), and the limiting mechanism comprises a limiting cavity (401). The limiting cavity (401) is opened inside the support frame (301), and the internal sliding sleeve of the limiting cavity (401) is provided with two semicircular rods (402). Limiting rods (403) are fixedly installed on opposite sides of the two semicircular rods (402), and the limiting rods (403) are located below the measuring housing (302). Tooth plates (404) are fixedly installed on opposite sides of the two semicircular rods (402).

5. A groundwater level measuring device according to claim 4, characterized in that: An annular groove (405) is provided on one side of the unwinding plate (319) close to the slide (318); an annular plate (406) is rotatably sleeved inside the annular groove (405); the annular plate (406) is fixedly connected to the slide (318); a limiting groove (407) is provided on the inner wall of the slide (317); a limiting strip (408) is fixedly installed on the surface of the slide (318); the limiting strip (408) is slidably sleeved inside the limiting groove (407); a travel block (409) is fixedly installed on the inner wall of the slide (317); a motor (410) is fixedly installed on the left side of one of the slides (318).

6. A groundwater level measuring device according to claim 5, characterized in that: A rotating cavity (411) is provided inside one of the slides (318), a rotating table (412) is rotatably installed inside the rotating cavity (411), the center of the rotating table (412) coincides with the center of the unwinding plate (319), the output end of the motor (410) is fixedly connected to the left side of the rotating table (412), an unlocking block (413) is integrally formed on the surface of the rotating table (412), a travel groove (414) is provided on the side of the unwinding plate (319) close to the slide (318), a travel shaft (415) is provided inside the sliding sleeve of the travel groove (414), and the left side of the travel shaft (415) is fixedly connected to the right side of the rotating table (412).

7. A groundwater level measuring device according to claim 6, characterized in that: A positioning cavity (416) is provided on the front side of one of the slides (318), and the positioning cavity (416) is communicated with the rotating cavity (411); a limiting groove (417) is provided on the inner wall of one of the slide grooves (317), and a moving cavity (418) is provided on the front side of the limiting groove (417); a positioning block (419) is provided on the internal sliding sleeve of the moving cavity (418), and the rear side of the positioning block (419) penetrates into the interior of the positioning cavity (416) and the rotating cavity (411); a moving spring (420) is fixedly installed on the front side of the inner wall of the moving cavity (418), and the rear side of the moving spring (420) is fixedly connected to the front side of the positioning block (419).

8. A groundwater level measuring device according to claim 7, characterized in that: A limiting spring (421) is fixedly installed at the bottom of the inner wall of the slide groove (317), the top of the limiting spring (421) is fixedly connected to the bottom of the slide (318), the bottom of the slide (318) is fixedly installed with a driving screw (422), the support frame (301) is rotatably installed with a gear (423), the gear (423) and the toothed plate (404) are meshingly connected, and a sleeve (424) is fixedly installed on the top of the gear (423), the sleeve (424) is sleeved on the surface of the driving screw (422), and the sleeve (424) and the driving screw (422) are threadedly connected.

9. A groundwater level measuring device according to any one of claims 1 to 8, characterized in that: The measuring inner shell (303) is provided with a blocking mechanism, the blocking mechanism comprising a buoyancy rod (501), the buoyancy rod (501) is slidably sleeved inside the measuring inner shell (303), a buoyancy plate (502) is fixedly mounted on the bottom of the buoyancy rod (501), a blocking cavity (503) is provided inside the measuring inner shell (303), the blocking cavity (503) and the driving cavity (310) are arranged alternately, a blocking plate (504) is slidably sleeved inside the blocking cavity (503), and the blocking plate (504) is fixedly sleeved on the surface of the buoyancy rod (501).

10. A groundwater level measuring device according to claim 9, characterized in that: A direction-changing groove (505) is provided on the surface of the blocking plate (504), and the shape of the direction-changing groove (505) is set to be inclined. A direction-changing shaft (506) is provided inside the direction-changing groove (505) in a sliding sleeve, and a direction-changing frame (507) is fixedly provided on the surface of the direction-changing shaft (506). The direction-changing frame (507) penetrates the outer wall of the measuring inner shell (303), and a direction-blocking spring (508) is fixedly installed in the inner cavity of the direction-blocking frame (507). A direction-blocking head (509) is fixedly installed at one end of the direction-blocking spring (508) away from the central axis of the measuring inner shell (303). A first contact piece (510) is fixedly installed on the top of the buoyancy rod (501), and a second contact piece (511) is fixedly installed on the top of the direction-blocking cavity (503).

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