Static sounding device capable of automatically correcting perpendicularity

Abstract

The static sounding device capable of automatically correcting the perpendicularity comprises a support and a sounding rod, a stand and three supporting legs located at the bottom of the stand are arranged on the support, a positioning ball is connected to the top of the stand in a spherical hinge mode, the sounding rod penetrates through the positioning ball, and the sounding rod and the positioning ball are in sliding fit. The bottom of the positioning ball is fixedly connected with a limiting sleeve arranged outside the sounding rod in a sleeving mode through a hanging rod, the peripheral wall of the limiting sleeve is in spherical hinge connection with the three supporting legs through three telescopic rods, and telescopic locking controllers are arranged on the telescopic rods. The three telescopic rods and the telescopic locking controller used for locking the telescopic rods to stretch out and draw back are arranged below the positioning ball, so that the sounding rod can be fixed in the vertical direction after being corrected in cooperation with a spherical hinge structure of the positioning ball through self weight, and therefore compared with the prior art, the sounding rod has the function of being vertically inserted and reliable in sounding after being vertically corrected; therefore, the parameters detected by the touch probe are more accurate.

Description

Technical Field

[0001] This utility model relates to the field of in-situ static testing technology, specifically a static cone penetrometer device for automatically correcting verticality. Background Technology

[0002] Hydrostatic cone penetration testing (DCPT) involves transporting the DCPT equipment to the testing site by ship. Using the ship's crane, the penetrator is placed on the seabed by cables. The penetrator then continuously inserts the static cone probe into the soil, acquiring parameters such as cone tip resistance, sidewall friction, and pore water pressure. These parameters are then analyzed to accurately calculate various soil parameters. However, due to the complex and often uneven conditions underwater, the acquired parameters require calibration, making the process time-consuming and labor-intensive.

[0003] Patent CN106498919B discloses a seabed-type static cone penetrometer with automatic verticality correction. The device is suspended and placed at the test location by steel cables. A penetration force applied inside the penetrometer propels the static cone probe into the test position. The device is supported by diagonal braces. If the test location is uneven, the angle of the static cone probe can be automatically adjusted using ball bearings within the penetration platform. Simultaneously, the tilt of the penetration equipment is adjusted using intelligent hydraulic jacks at the bottom of the equipment to complete the test. The device is hoisted from a ship and lowered underwater. Once the static cone probe is fully vertical, continuous, uniform penetration acquires parameters such as cone tip resistance, sidewall friction, and pore water pressure. These parameters do not require angle correction, significantly reducing workload.

[0004] However, the above-mentioned existing technology still has shortcomings in use: the probe uses its own weight in conjunction with the ball bearing to achieve the function of automatically correcting the verticality, but the probe will still swing when it moves downward after correction. This setting makes it difficult for the probe to enter the penetration position vertically, and thus it is difficult to accurately obtain the actual parameters of the current stratum.

[0005] Therefore, this utility model provides a static cone penetrometer that automatically corrects verticality. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a static cone penetration test device with automatic verticality correction, thereby solving the problems mentioned in the background art. This invention has an automatic verticality correction and fixing function, which allows the cone penetration rod to be inserted vertically into the area to be tested, enabling the cone penetration probe to accurately acquire the parameters of the tested stratum.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a static cone penetrometer for automatically correcting verticality, comprising a support and a penetrometer rod. The support is provided with a platform and three legs located at the bottom of the platform. A positioning ball is connected to the top of the platform by a ball hinge. The penetrometer rod passes through the positioning ball and the two are slidably engaged. The bottom of the positioning ball is fixedly connected to a limiting sleeve sleeved outside the penetrometer rod by a hanging rod. The outer peripheral wall of the limiting sleeve is respectively connected to the three legs by ball hinges through three telescopic rods. A telescopic locking controller is provided on the telescopic rods.

[0008] Furthermore, a guide sleeve is provided through the positioning ball and fitted onto the outside of the probe rod, and the bottom of the guide sleeve is fixedly connected to the bottom of the rod.

[0009] Furthermore, a control motor and a counterweight are fixedly connected to the outer peripheral wall of the guide sleeve, and the output shaft of the control motor is fixedly connected to a transmission gear that meshes with the probe rod.

[0010] Furthermore, a rotating sleeve is fitted around the outside of the guide sleeve. The outer peripheral wall of the rotating sleeve is fixedly connected by a connecting arm and a counterweight. A locking bolt that works in conjunction with the guide sleeve is screwed through the outer peripheral wall of the rotating sleeve.

[0011] Furthermore, the telescopic rod includes a sleeve and a guide rod, one end of which is fixedly connected to a connecting sleeve fitted inside the sleeve, the connecting sleeve and the sleeve being in sliding fit.

[0012] Furthermore, the telescopic locking controller includes a lead screw and a pressure block. The outer peripheral wall of the sleeve is fixedly connected to a positioning sleeve that is rotatably connected to the lead screw. The pressure block is sleeved inside the positioning sleeve and the two are slidably engaged. The pressure block is screwed to the lead screw and is used in conjunction with the outer peripheral wall of the connecting sleeve.

[0013] Furthermore, the telescopic locking controller also includes a servo motor, which is fixedly mounted at one end of the positioning sleeve and its output shaft is fixedly connected to one end of the lead screw.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. By setting three telescopic rods below the positioning ball and a telescopic locking controller for locking the telescopic rods, the probe rod can be fixed in the vertical direction after being corrected by its own weight and the ball joint structure of the positioning ball. Compared with the existing technology, it has the function of reliable vertical insertion after vertical correction, making the probe detection parameters more accurate.

[0016] 2. In this utility model, the telescopic locking controller includes a lead screw, a pressure block, and a servo motor. When the servo motor controls the lead screw to rotate, it can drive the pressure block to lock and release the telescopic rod. This configuration has the function of accelerating the correction of the probe rod and greatly improves the efficiency of automatic correction. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a static cone penetration test device for automatically correcting verticality according to the present invention;

[0018] Figure 2 for Figure 1 The main view;

[0019] Figure 3 for Figure 2 A magnified cross-sectional view of the area marked "a".

[0020] In the diagram: 1. Support; 11. Platform; 12. Support leg; 2. Probe rod; 3. Positioning ball; 31. Guide sleeve; 311. Rotating sleeve; 3111. Connecting arm; 4. Limiting sleeve; 5. Telescopic rod; 51. Sleeve; 511. Positioning sleeve; 52. Guide rod; 521. Connecting sleeve; 6. Telescopic locking controller; 61. Lead screw; 62. Pressure block; 63. Servo motor; 7. Lifting rod; 8. Control motor; 81. Transmission gear; 9. Counterweight; 101. Locking bolt. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figures 1 to 3 This utility model provides a technical solution: a static cone penetration test device for automatic verticality correction, including a support 1 and a cone penetration rod 2. The support 1 is provided with a platform 11 and three legs 12 located at the bottom of the platform 11. When it is needed for use at sea, corresponding pulleys and steel cables can be installed on the platform 11. The installation structure of the pulleys and steel cables can adopt the structure in the patent documents mentioned in the background art, which will not be described in detail in this application.

[0023] In this technical solution, a positioning ball 3 is connected to the top of the platform 11 by a ball joint, and the probe rod 2 passes through the positioning ball 3 and the two slide together. The probe rod 2 also uses its own weight to cooperate with the ball joint mounting structure of the positioning ball 3 to achieve the automatic vertical correction function.

[0024] Furthermore, the bottom of the positioning ball 3 is fixedly connected to a limiting sleeve 4 sleeved on the outside of the probe rod 2 via a hanging rod 7. The outer peripheral wall of the limiting sleeve 4 is connected to the three support legs 12 by ball joints via three telescopic rods 5. In specific implementation, the telescopic rod 5 includes a sleeve 51 and a guide rod 52. One end of the guide rod 52 is fixedly connected to a connecting sleeve 521 sleeved inside the sleeve 51. The connecting sleeve 521 and the sleeve 51 are slidably engaged. The three support legs 12 are evenly distributed. When the probe rod 2 is corrected by its own weight, it will drive the telescopic rod 5 to passively extend and retract. The telescopic rod 5 is equipped with a telescopic locking controller 6. The function of the telescopic locking controller 6 is to lock the telescopic rod 5. After the telescopic rod 5 is locked, the probe rod 2 is locked in a vertical state. When it moves downward, it will drive the probe at its base to insert into the tested stratum.

[0025] Specifically, the telescopic locking controller 6 includes a lead screw 61 and a pressure block 62. The outer peripheral wall of the sleeve 51 is fixedly connected to a positioning sleeve 511 that is rotatably connected to the lead screw 61. The pressure block 62 is fitted inside the positioning sleeve 511 and the two slide together. The pressure block 62 is screwed into the lead screw 61 and is used in conjunction with the outer peripheral wall of the connecting sleeve 521. In specific implementation, a threaded hole can be opened on one side of the pressure block 62 to be screwed into the lead screw 61. When the lead screw 61 is rotated, the pressure block 62 moves toward the connecting sleeve 521 and presses the connecting sleeve 521, then the telescopic rod 5 is locked, thereby locking the probe rod 2 in a vertical state. At this time, the probe rod 2 can be controlled to move up and down.

[0026] Furthermore, the telescopic locking controller 6 also includes a servo motor 63, which is fixedly mounted at one end of the positioning sleeve 511 and its output shaft is fixedly connected to one end of the lead screw 61. The servo motor 63 provides driving force to the rotation of the lead screw 61. This arrangement facilitates locking the telescopic rod 5 as needed. For example, when the probe rod 2 may experience continuous long-term swinging during correction, the telescopic rod 5 can be periodically locked to reduce the frequency and duration of the swinging of the probe rod 2, thus accelerating the automatic correction of the probe rod 2.

[0027] In this embodiment, a control motor 8 and a counterweight 9 are fixedly connected to the outer peripheral wall of the guide sleeve 31. The output shaft of the control motor 8 is fixedly connected to a transmission gear 81 that meshes with the probe rod 2. In specific implementation, a row of teeth that mesh with the transmission gear 81 can be opened on the outer wall of the probe rod 2. When the control transmission gear 81 rotates, it can drive the probe rod 2 to move up and down. The function of the counterweight 9 is to ensure that its center of gravity, together with the control motor 8 and the transmission gear 81, is located on the axis of the guide sleeve 31.

[0028] Furthermore, a rotating sleeve 311 is fitted around the outside of the guide sleeve 31. The outer peripheral wall of the rotating sleeve 311 is fixedly connected to the counterweight 9 via a connecting arm 3111. A locking bolt 101, which works in conjunction with the guide sleeve 31, is screwed through the outer peripheral wall of the rotating sleeve 311. This arrangement serves to adjust the center of gravity of components such as the counterweight 9 and the control motor 8. In other words, by rotating the rotating sleeve 311, the center of gravity of the counterweight 9 and the control motor 8 can be adjusted to coincide with the axis of the guide sleeve 31. The function of the locking bolt 101 is to lock the rotating sleeve 311 onto the guide sleeve 31 when it is tightened.

[0029] Working principle: When conducting offshore penetration tests, the support frame 1 is suspended on the seabed. If the seabed is uneven, the entire support frame 1 will tilt. At this time, the penetration rod 2 will automatically correct itself to a vertical position using its own weight, and the positioning ball 3 will rotate passively. During the correction process, the penetration rod 2 will experience continuous small-amplitude swaying. At this time, the three servo motors 63 can be periodically started and stopped synchronously to lock and release the telescopic rod 5, thereby continuously reducing the amplitude and duration of the swaying of the penetration rod 2 and accelerating the penetration rod 2 to a vertical position. When the penetration rod 2 is stationary or nearly stationary, the three servo motors 63 are started simultaneously to drive the lead screw 61 to rotate. The three pressure blocks 62 simultaneously press the corresponding connecting sleeves 521, at which point the three telescopic rods 5 are locked. Then, the control motor 8 is started to drive the transmission gear 81 to rotate, thereby driving the penetration rod 2 to move downward, so that the probe installed at its bottom can conduct penetration tests on the seabed strata.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A static penetrometer device for automatic correction of the verticality, comprising a support (1) and a penetrometer rod (2), characterized in that, The support (1) is provided with a rack (11) and three supporting legs (12) at the bottom of the rack (11), the top of the rack (11) is connected with a positioning ball (3) through a spherical hinge, the feeler rod (2) penetrates through the positioning ball (3) and the two are in sliding fit, the bottom of the positioning ball (3) is fixedly connected with a limiting sleeve (4) sleeved outside the feeler rod (2) through a suspender (7), the outer peripheral wall of the limiting sleeve (4) is connected with the three supporting legs (12) through three telescopic rods (5) through a spherical hinge, the telescopic rod (5) is provided with a telescopic locking controller (6).

2. A static penetrometer device for automatically correcting for verticality according to claim 1, characterised in that: The positioning ball (3) is provided with a guide sleeve (31) sleeved outside the feeler rod (2), and the bottom of the guide sleeve (31) is fixedly connected with the bottom of the suspender (7).

3. A static penetrometer device for automatically correcting for verticality according to claim 2, wherein: The outer peripheral wall of the guide sleeve (31) is fixedly connected with a control motor (8) and a counterweight (9), and the output shaft of the control motor (8) is fixedly connected with a transmission gear (81) engaged with the feeler rod (2).

4. A static penetrometer device for automatically correcting for verticality according to claim 3, wherein: The guide sleeve (31) is sleeved with a rotating sleeve (311), the outer peripheral wall of the rotating sleeve (311) is fixedly connected with the counterweight (9) through a connecting arm (3111), and the outer peripheral wall of the rotating sleeve (311) is screwed with a locking bolt (101) used in cooperation with the guide sleeve (31).

5. A static penetrometer device for automatically correcting for verticality according to claim 1, wherein: The telescopic rod (5) comprises a sleeve pipe (51) and a guide rod (52), one end of the guide rod (52) is fixedly connected with a connecting sleeve (521) sleeved in the sleeve pipe (51), and the connecting sleeve (521) and the sleeve pipe (51) are in sliding fit.

6. A static penetrometer device for automatically correcting for verticality according to claim 5, wherein: The telescopic locking controller (6) comprises a lead screw (61) and a pressing block (62), the outer peripheral wall of the sleeve pipe (51) is fixedly connected with a positioning sleeve (511) rotationally connected with the lead screw (61), the pressing block (62) is sleeved in the positioning sleeve (511) and the two are in sliding fit, the pressing block (62) and the lead screw (61) are screwed and used in cooperation with the outer peripheral wall of the connecting sleeve (521).

7. A static penetrometer device for automatically correcting for verticality according to claim 6, characterised in that: The telescopic locking controller (6) further comprises a servo motor (63), the servo motor (63) is fixedly arranged at one end of the positioning sleeve (511) and the output shaft thereof is fixedly connected with one end of the lead screw (61).

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