Stable propelling device for static sounding test of liquefied formation

Abstract

The invention relates to the field of static sounding tests, and discloses a liquefied formation static sounding test stable propelling device which comprises a base, an L-shaped supporting frame, a static sounding machine body, a first hydraulic cylinder, a probe rod, a probe and a stable propelling positioning monitoring mechanism. The device has the following advantages and effects: the device can assist the probe rod in keeping vertical linear propulsion, effectively prevents the probe rod from inclining due to factors such as uneven stress in a liquefied stratum, improves the accuracy and stability of the probe rod in driving the probe to vertically advance downwards, can monitor and judge whether the propulsion direction of the probe rod is inclined in real time, and improves the accuracy and stability of the probe rod. According to the device, the accuracy of liquefied formation static sounding test data is guaranteed, the whole device can be effectively and reliably fixed and accurately leveled conveniently, in the test process, the device does not shift or tilt, a feeler lever and a probe can be guaranteed to be vertically and downwards pushed, and the test efficiency is improved. And the accuracy of the static sounding test data of the liquefied formation is further enhanced.

Description

Technical Field

[0001] This application relates to the technical field of static cone penetration tests, and particularly relates to a stable propulsion device for static cone penetration tests in liquefied strata. Background Art

[0002] Static cone penetration refers to using a pressure device to press a penetration rod with a penetration head into the test soil layer, and measuring the penetration resistance of the soil through a measurement system to determine some basic physical and mechanical properties of the soil, such as the deformation modulus of the soil, the allowable bearing capacity of the soil, etc. Static cone penetration is an in-situ test method in engineering geological exploration. The process of pressing a conical probe into the soil at a certain rate and measuring its penetration resistance, tip resistance, and sidewall friction resistance is called a static cone penetration test.

[0003] In the related art, when conducting a static cone penetration test in a liquefied stratum, although traditional static cone penetration test equipment in liquefied strata can meet the basic requirements of static cone penetration tests, it is found that there are still at least the following deficiencies in actual use: most lack the function of assisting in positioning the penetration rod, and the penetration rod is extremely vulnerable to the influence of uneven forces in the stratum during the propulsion process, resulting in the inclination of the propulsion direction. This will not only cause the data collected by the probe to deviate from the actual position, reducing the accuracy and reliability of the data and unable to truly reflect the mechanical properties of the stratum, but also due to the complexity of the actual terrain, it is impossible to ensure that the equipment is always in a horizontal and stable state during the test process, which will further exacerbate the deviation of the penetration rod propulsion direction and have a negative impact on the test results.

[0004] Therefore, we propose a stable propulsion device for static cone penetration tests in liquefied strata to solve the above problems. Summary of the Invention

[0005] The purpose of this application is to provide a stable propulsion device for static cone penetration tests in liquefied strata, which has the ability to assist the penetration rod to maintain vertical linear propulsion, effectively prevent it from tilting due to factors such as uneven force in the liquefied stratum, improve the accuracy and stability of the vertical downward propulsion direction of the penetration rod driving the probe, and can real-time monitor and judge whether the propulsion direction of the penetration rod is inclined, providing guarantee for the accuracy of static cone penetration test data in liquefied strata. Moreover, it is convenient to effectively and reliably fix the whole device and perform precise leveling. During the test process, the device will not shift or tilt, and can provide guarantee for the penetration rod and the probe to maintain vertical downward propulsion, further enhancing the accuracy of static cone penetration test data in liquefied strata.

[0006] The above technical object of the present application is achieved through the following technical solutions: A stable propulsion device for a liquefied formation static cone penetration test, including a base, an L-shaped support frame, a static cone penetration machine main body, a first hydraulic cylinder, a sounding rod, a probe head, and a stable propulsion positioning and monitoring mechanism. The L-shaped support frame is fixedly installed on the top of the base, the static cone penetration machine main body is fixedly installed on the top of the L-shaped support frame, the first hydraulic cylinder is fixedly installed on the inner wall of the top of the L-shaped support frame, an assembly seat is fixedly installed at the output shaft end of the first hydraulic cylinder, the sounding rod is detachably installed and fixed at the bottom of the assembly seat, an avoidance hole is opened on the top of the base, the bottom end of the sounding rod extends into the avoidance hole, the probe head is fixedly installed at the bottom end of the sounding rod, the probe head is electrically connected to the static cone penetration machine main body, and the stable propulsion positioning and monitoring mechanism is arranged on the base. The stable propulsion positioning and monitoring mechanism is used to assist in positioning the propulsion direction of the sounding rod and monitor whether the propulsion direction of the sounding rod is inclined. The stable propulsion positioning and monitoring mechanism includes a plurality of cross bars, a plurality of abutting balls, a plurality of fixing plates, and a plurality of springs. A plurality of horizontally arranged holes are opened on the inner side wall of the avoidance hole and are distributed in an equidistant annular shape. One ends of the plurality of cross bars are respectively slidably installed in the corresponding horizontally arranged holes. A plurality of abutting balls are respectively fixedly installed at the ends of the corresponding cross bars located outside the horizontally arranged holes. The sounding rod is located between the plurality of abutting balls. A plurality of abutting balls are all in sliding contact with the outer surface of the sounding rod. A plurality of fixing plates are respectively fixedly sleeved on the corresponding cross bars. One ends of the plurality of springs are respectively fixedly connected to the corresponding fixing plates. The other ends of the plurality of springs are all fixedly connected to the inner side wall of the avoidance hole. The plurality of springs are respectively sleeved on the corresponding cross bars.

[0007] The further setting of the present application is that: Flanges are fixedly installed at the top end of the sounding rod and the bottom of the assembly seat, and the two flanges are fixedly connected by bolts.

[0008] The further setting of the present application is that: A displacement sensor is fixedly installed on one side of the assembly seat, and universal wheels are rotatably installed at the four corners of the bottom of the base.

[0009] The further setting of the present application is that: The stable propulsion positioning and monitoring mechanism further includes a plurality of Z-shaped pointers, a plurality of scales, a plurality of columns, and a plurality of high-definition cameras. One ends of the plurality of Z-shaped pointers are respectively fixedly connected to the top of one side of the corresponding fixing plates. A plurality of scales are all fixedly installed on the top of the base and are distributed in an equidistant annular shape. The other ends of the plurality of Z-shaped pointers are all located above the base, and the ends of the plurality of Z-shaped pointers located outside the base are respectively directly above the corresponding scales. A plurality of columns are all fixedly installed on the top of the base and are distributed in an equidistant annular shape. A plurality of high-definition cameras are respectively fixedly installed at the top ends of the corresponding columns, and the plurality of high-definition cameras are arranged obliquely.

[0010] The further setting of the present application is that: The outer surface of the abutting ball is of a smooth surface structure.

[0011] A further setting of the present application is that positioning and leveling mechanisms are provided at the four corners of the top of the base. The positioning and leveling mechanisms are used to fix and level the position of the base. The positioning and leveling mechanism includes an L-shaped beam, a second hydraulic cylinder, a connecting seat, a positioning base plate, a plurality of ground-inserting nails, a motor, and a threaded column. The L-shaped beam is fixedly installed on the top of the base, the second hydraulic cylinder is fixedly installed on the L-shaped beam, the connecting seat is fixedly installed at the output shaft end of the second hydraulic cylinder, a threaded groove is formed at the bottom of the connecting seat, the positioning base plate is located directly below the connecting seat, a plurality of ground-inserting nails are fixedly installed at the bottom of the positioning base plate and are arranged in an array, the motor is fixedly installed on the top of the positioning base plate, and the threaded column is fixedly installed at the output shaft end of the motor. The top end of the threaded column is threadedly installed in the threaded groove.

[0012] A further setting of the present application is that guiding ears are fixedly installed on the outer walls on both sides of the connecting seat, and two guiding vertical rods are fixedly installed on the top of the positioning base plate. The two guiding ears are respectively slidably sleeved on the corresponding guiding vertical rods.

[0013] A further setting of the present application is that a plurality of spirit levels are fixedly installed on the base, and the plurality of spirit levels are evenly distributed.

[0014] A further setting of the present application is that a booster air pump is fixedly installed on the top of the base. The air outlet end of the booster air pump is fixedly connected to an air delivery pipe. An annular fixing seat is fixedly installed at the bottom of the base. The avoidance hole is communicated with the annular fixing seat. An annular air cavity is formed in the annular fixing seat. One end of the air delivery pipe penetrates through the base and extends into the annular air cavity. A plurality of obliquely blowing air holes are formed in the inner annular wall of the annular air cavity and are arranged in an array.

[0015] A further setting of the present application is that a controller is fixedly installed on the L-shaped support frame, and a battery pack is fixedly installed on the top of the base.

[0016] The present application includes at least one of the following beneficial technical effects: 1. The present application designs a stable propulsion positioning and monitoring mechanism. During the process of controlling the probe to push downward, it can play a circumferential limiting role on the probe, assist the probe to maintain a vertical linear propulsion, effectively prevent it from tilting due to factors such as uneven force in the liquefied formation, improve the accuracy and stability of the direction of the probe driving the probe head to push vertically downward, and can also monitor and judge in real time whether the propulsion direction of the probe is tilted, facilitating the operator to intuitively understand the position deviation of the probe during the propulsion process. If the probe deviates during the propulsion process, it is convenient for the staff to pause the propulsion work in time, analyze and adjust the propulsion state of the probe, ensure the effective monitoring of the propulsion direction of the probe, and provide guarantee for the accuracy of the static cone penetration test data of the liquefied formation.

[0017] 2. The leveling mechanism designed in this application facilitates the effective and reliable fixation of the entire device and precise leveling. During subsequent tests, the device will not shift, tilt, or topple, ensuring that the probe rod and probe can be pushed vertically downward. This helps to guarantee the stability of the entire device during the test, avoiding the influence of the base tilt on the inclination of the probe rod's advancing direction and further ensuring the accuracy of the static cone penetration test data in the liquefied formation.

[0018] 3. The pressurized air pump, air delivery pipe, annular fixing seat, annular air chamber, and inclined air holes designed in this application can blow away impurities such as soil attached to the surface of the probe rod and probe during the process of controlling the vertical upward movement of the probe rod and probe, playing a certain cleaning role and being beneficial to ensuring the normal operation and test accuracy of the probe rod and probe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 is the front perspective structural schematic diagram of this embodiment.

[0021] Figure 2 is Figure 1 the enlarged structural schematic diagram of part A in

[0022] Figure 3 the perspective structural schematic diagram of the probe rod and probe.

[0023] Figure 4 is the top perspective structural schematic diagram of the base.

[0024] Figure 5 is the front sectional perspective structural schematic diagram of the base.

[0025] Figure 6 is Figure 4 the enlarged structural schematic diagram of part B in

[0026] Figure 7 the perspective structural schematic diagram of the positioning and leveling mechanism.

[0027] Figure 8 is the front sectional perspective structural schematic diagram of the positioning and leveling mechanism.

[0028] Figure 9 is the bottom perspective structural schematic diagram of this embodiment.

[0029] In the figure, 1 is the base; 2 is the L-shaped support frame; 3 is the main body of the static cone penetrometer; 4 is the first hydraulic cylinder; 5 is the assembly seat; 6 is the sounding rod; 7 is the probe; 8 is the avoidance hole; 9 is the flange; 10 is the displacement sensor; 11 is the universal wheel; 12 is the cross bar; 13 is the abutting ball; 14 is the fixing plate; 15 is the spring; 16 is the Z-shaped pointer; 17 is the scale; 18 is the support column; 19 is the high-definition camera; 20 is the positioning and leveling mechanism; 201 is the L-shaped beam; 202 is the second hydraulic cylinder; 203 is the connecting seat; 2031 is the threaded groove; 204 is the positioning bottom plate; 205 is the ground anchor; 206 is the motor; 207 is the threaded column; 208 is the guiding ear; 209 is the guiding vertical rod; 21 is the level; 22 is the booster air pump; 23 is the air delivery pipe; 24 is the annular fixing seat; 25 is the annular air cavity; 26 is the inclined air blowing hole; 27 is the controller; 28 is the battery pack. Specific implementation mode

[0030] The technical solutions of the present application will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0031] See Figures 1-9 , the present application provides a stable propulsion device for a static cone penetration test in a liquefied formation, including a base 1, an L-shaped support frame 2, a main body 3 of a static cone penetrometer, a first hydraulic cylinder 4, a sounding rod 6, a probe 7, and a stable propulsion positioning and monitoring mechanism. The L-shaped support frame 2 is fixedly installed on the top of the base 1, the main body 3 of the static cone penetrometer is fixedly installed on the top of the L-shaped support frame 2, the first hydraulic cylinder 4 is fixedly installed on the inner wall of the top of the L-shaped support frame 2, the output shaft end of the first hydraulic cylinder 4 is fixedly installed with an assembly seat 5, the sounding rod 6 is detachably installed and fixed at the bottom of the assembly seat 5, an avoidance hole 8 is opened on the top of the base 1, the bottom end of the sounding rod 6 extends into the avoidance hole 8, the probe 7 is fixedly installed at the bottom end of the sounding rod 6, the probe 7 is electrically connected to the main body 3 of the static cone penetrometer, and the first hydraulic cylinder 4 can control the sounding rod 6 and the probe 7 to move linearly, and then the sounding rod 6 and the probe 7 can be uniformly and vertically pushed downward, so that the sounding rod 6 and the probe 7 can enter the underground soil to a suitable depth downward, and the probe 7 can be used to measure the cone tip resistance, the side wall friction resistance, and the pore water pressure.

[0032] In this embodiment, the stable propulsion positioning and monitoring mechanism is arranged on the base 1. The stable propulsion positioning and monitoring mechanism is used to assist in positioning the propulsion direction of the probe rod 6 and monitor whether the propulsion direction of the probe rod 6 is inclined. The stable propulsion positioning and monitoring mechanism includes a plurality of cross bars 12, a plurality of abutting balls 13, a plurality of fixing plates 14 and a plurality of springs 15. A plurality of transverse holes are formed in the inner side wall of the avoidance hole 8 and are distributed in an equidistant annular shape. One ends of the plurality of cross bars 12 are respectively slidably installed in the corresponding transverse holes. The plurality of abutting balls 13 are respectively fixedly installed at one ends of the corresponding cross bars 12 located outside the transverse holes. The probe rod 6 is located among the plurality of abutting balls 13. The plurality of abutting balls 13 are all in sliding contact with the outer surface of the probe rod 6. The outer surface of the abutting ball 13 is of a smooth surface structure. The plurality of fixing plates 14 are respectively fixedly sleeved on the corresponding cross bars 12. One ends of the plurality of springs 15 are respectively fixedly connected to the corresponding fixing plates 14. The other ends of the plurality of springs 15 are all fixedly connected to the inner side wall of the avoidance hole 8. The plurality of springs 15 are respectively sleeved on the corresponding cross bars 12. By using the plurality of abutting balls 13 to surround the probe rod 6 and be in sliding contact with its outer surface, during the process of controlling the probe rod 6 to advance downward, under the elastic force of the plurality of abutting balls 13 and the plurality of springs 15, a circumferential limiting effect can be exerted on the probe rod 6 to assist the probe rod 6 to maintain a vertical linear advancement, effectively preventing it from tilting due to factors such as uneven force in the liquefied formation, and improving the accuracy and stability of the vertical downward propulsion direction of the probe rod 6 driving the probe head 7.

[0033] In this embodiment, the stable propulsion positioning and monitoring mechanism further includes a plurality of Z-shaped pointers 16, a plurality of scales 17, a plurality of struts 18 and a plurality of high-definition cameras 19. One ends of the plurality of Z-shaped pointers 16 are respectively fixedly connected to the top of one side of the corresponding fixing plates 14. The plurality of scales 17 are all fixedly installed on the top of the base 1 and are distributed in an equidistant annular shape. The other ends of the plurality of Z-shaped pointers 16 are all located above the base 1, and the ends of the plurality of Z-shaped pointers 16 located outside the base 1 are respectively located directly above the corresponding scales 17. The plurality of struts 18 are all fixedly installed on the top of the base 1 and are distributed in an equidistant annular shape. The plurality of high-definition cameras 19 are respectively fixedly installed at the tops of the corresponding struts 18, and the plurality of high-definition cameras 19 are arranged obliquely. By using the cooperation of the plurality of Z-shaped pointers 16 and the corresponding scales 17 respectively, when the probe rod 6 is pushed downward into the soil, when the probe rod 6 tilts, the probe rod 6 will push the corresponding abutting balls 13 and cross bars 12 to move, and the Z-shaped pointers 16 will indicate the corresponding position changes on the scales 17. By using the obliquely arranged high-definition cameras 19, the changes of the Z-shaped pointers 16 pointing to the scales 17 can be photographed and recorded in real time, which is convenient for the operator to intuitively understand the position offset of the probe rod 6 during the propulsion process, and then enables the staff to pause the propulsion work in time to facilitate the analysis and adjustment of the propulsion state of the probe rod 6, ensuring the effective monitoring of the propulsion direction of the probe rod 6.

[0034] In this embodiment, flanges 9 are fixedly installed at the top end of the probe rod 6 and the bottom of the assembly seat 5, and the two flanges 9 are fixedly connected by bolts. This detachable connection method makes the operation of the probe rod 6 simple when replacement or maintenance is required, improving the maintainability and flexibility of the equipment in use.

[0035] In this embodiment, a displacement sensor 10 is fixedly installed on one side of the assembly seat 5. The displacement sensor 10 is designed to facilitate obtaining the distance that the probe rod 6 drives the probe 7 to push downward, so as to conveniently know the depth that the probe 7 enters the soil downward. Universal wheels 11 are rotatably installed at the four corners of the bottom of the base 1. The design of the universal wheels 11 facilitates the flexible movement of the entire device within the test site, enabling it to quickly reach the designated test position, saving the time and labor costs for equipment handling and positioning.

[0036] In this embodiment, positioning and leveling mechanisms 20 are provided at the four corners of the top of the base 1. The positioning and leveling mechanisms are used to fix and level the position of the base 1. The positioning and leveling mechanism 20 includes an L-shaped beam 201, a second hydraulic cylinder 202, a connecting seat 203, a positioning bottom plate 204, a plurality of ground nails 205, a motor 206, and a threaded column 207. The L-shaped beam 201 is fixedly installed on the top of the base 1, the second hydraulic cylinder 202 is fixedly installed on the L-shaped beam 201, the connecting seat 203 is fixedly installed at the output shaft end of the second hydraulic cylinder 202, a threaded groove 2031 is formed at the bottom of the connecting seat 203, the positioning bottom plate 204 is located directly below the connecting seat 203, a plurality of ground nails 205 are fixedly installed at the bottom of the positioning bottom plate 204 and are arranged in an array, the motor 206 is fixedly installed on the top of the positioning bottom plate 204, the motor 206 is a reversible motor, the threaded column 207 is fixedly installed at the output shaft end of the motor 206, and the top end of the threaded column 207 is threadedly installed in the threaded groove 2031. The height of the connecting seat 203 and the positioning bottom plate 204 can be adjusted by the second hydraulic cylinder 202, and the plurality of ground nails 205 can firmly fix the positioning bottom plate 204 on the ground, thereby effectively and reliably fixing the position of the base 1. During the experiment, it is ensured that the entire device will not shift or tilt. By driving the threaded column 207 to rotate by the motor 206, under the threaded connection and cooperation of the threaded column 207 and the threaded groove 2031, the height position of the positioning bottom plate 204 can be finely adjusted according to the actual terrain, and then the base 1 can be accurately leveled, ensuring that the probe rod 6 and the probe 7 are kept pushing vertically downward. This helps to ensure the stability of the entire device during the test, avoiding the influence of the inclination of the base 1 on the inclination of the advancing direction of the probe rod 6, and ensuring the accuracy of the liquefied formation static cone penetration test data.

[0037] In this embodiment, guiding ears 208 are fixedly installed on the outer walls on both sides of the connecting seat 203. Two guiding vertical rods 209 are fixedly installed on the top of the positioning base plate 204. The two guiding ears 208 are respectively slidably sleeved on the corresponding guiding vertical rods 209. The design of the guiding ears 208 and the guiding vertical rods 209 can ensure the smooth vertical movement of the positioning base plate 204.

[0038] In this embodiment, a plurality of spirit levels 21 are fixedly installed on the base 1. The plurality of spirit levels 21 are evenly distributed. The design of the plurality of spirit levels 21 can visually display the horizontal state of the base 1 in real time, facilitating the operator to observe and adjust during the leveling process, and further improving the leveling accuracy and efficiency.

[0039] In this embodiment, a booster air pump 22 is fixedly installed on the top of the base 1. The air outlet end of the booster air pump 22 is fixedly connected to an air delivery pipe 23. A ring-shaped fixed seat 24 is fixedly installed on the bottom of the base 1. The avoidance hole 8 is communicated with the ring-shaped fixed seat 24. An annular air cavity 25 is formed in the ring-shaped fixed seat 24. One end of the air delivery pipe 23 penetrates through the base 1 and extends into the annular air cavity 25. A plurality of obliquely blowing air holes 26 distributed in an array are formed on the inner annular wall of the annular air cavity 25. By operating the booster air pump 22, air can be supplied to the annular air cavity 25 in the ring-shaped fixed seat 24 through the air delivery pipe 23, and then the pressurized air is blown out through the plurality of obliquely blowing air holes 26. During the process of controlling the vertical upward movement of the sounding rod 6 and the probe 7, the blown pressurized air can blow away impurities such as soil attached to the surfaces of the sounding rod 6 and the probe 7, playing a certain cleaning role and being beneficial to ensuring the normal operation and testing accuracy of the sounding rod 6 and the probe 7.

[0040] In this embodiment, a controller 27 is fixedly installed on the L-shaped support frame 2. A battery pack 28 is fixedly installed on the top of the base 1. A display screen and a plurality of control buttons are arranged on the controller 27. The static cone penetrometer main body 3, the first hydraulic cylinder 4, the displacement sensor 10, the high-definition camera 19, the second hydraulic cylinder 202, the motor 206, the booster air pump 22, the controller 27 and the battery pack 28 are electrically connected. The battery pack 28 can supply electric energy to the static cone penetrometer main body 3, the first hydraulic cylinder 4, the displacement sensor 10, the high-definition camera 19, the second hydraulic cylinder 202, the motor 206, the booster air pump 22 and the controller 27 respectively. The plurality of control buttons can be used to control the operation of the static cone penetrometer main body 3, the first hydraulic cylinder 4, the displacement sensor 10, the high-definition camera 19, the second hydraulic cylinder 202, the motor 206 and the booster air pump 22 respectively. The displacement data obtained by the displacement sensor 10 can be displayed on the display screen, and the high-definition images captured by the high-definition camera 19 can be displayed on the display screen, facilitating the staff to watch. Their circuit connection mode and control mode belong to the mature technologies in the field, and are fully disclosed and described, so no further elaboration will be made in this article.

[0041] With the above structure, when the liquefied formation static cone penetration test stable propulsion device provided by the present application is in use, the whole device is moved to the designated test position, and then the hydraulic cylinders II 202 at the four corners of the top of the base 1 are started to extend. The hydraulic cylinders II 202 push the connecting seat 203 and the positioning bottom plate 204 below to move vertically downward until the positioning bottom plate 204 approaches the ground. At this time, one or more of the four motors 206 are started to operate. The output shaft of the motor 206 drives the corresponding threaded column 207 to rotate. Due to the threaded cooperation between the threaded column 207 and the threaded groove 2031 at the bottom of the connecting seat 203, and the guiding effect of the guiding ears 208 and the guiding vertical rods 209, the height position of the positioning bottom plate 204 can be finely adjusted in terms of angle according to the actual ground conditions. When the plurality of spirit levels 21 show that the base 1 is in a horizontal state, the motors 206 and the hydraulic cylinders II 202 are stopped. Then, the plurality of ground nails 205 are driven into the ground soil under the drive of the positioning bottom plate 204, that is, the firm fixation of the base 1 is completed, ensuring the stability of the device during the subsequent test process and preventing it from shifting, tilting or toppling. During the subsequent experimental process, it can ensure that the sounding rod 6 and the probe 7 are pushed vertically downward, which helps to ensure the stability of the whole device during the test process, avoid the inclination of the propulsion direction of the sounding rod 6 due to the inclination of the base 1, and ensure the accuracy of the liquefied formation static cone penetration test data; Then, the hydraulic cylinder I 4 is controlled to extend and operate. The output shaft end thereof pushes the assembly seat 5 and the sounding rod 6 and the probe 7 below to be pushed vertically downward, so that the probe 7 and the sounding rod 6 are gradually inserted into the soil. After the probe 7 enters the formation, the relevant data such as the cone tip resistance, the sidewall friction resistance, and the pore water pressure collected are transmitted to the static cone penetration tester main body 3. The static cone penetration tester main body 3 processes and analyzes the data. At the same time, the displacement sensor 10 monitors the propulsion displacement of the sounding rod 6 in real time and feeds the data back to the controller 27; During the process of controlling the sounding rod 6 and the probe 7 to be pushed vertically downward, since a plurality of abutting balls 13 surround the sounding rod 6 and are in sliding contact with its outer surface, during the process of controlling the sounding rod 6 to be pushed downward, under the elastic force of the plurality of abutting balls 13 and the plurality of springs 15, a circumferential limiting effect can be exerted on the sounding rod 6 to assist the sounding rod 6 to maintain a vertical linear propulsion, and it can effectively prevent it from tilting due to factors such as uneven force in the liquefied formation, improving the accuracy and stability of the propulsion direction of the sounding rod 6 driving the probe 7 vertically downward; If the probe rod 6 deflects during the advancement process, it will push the contact ball 13 in the corresponding direction. The contact ball 13 drives the corresponding cross bar 12 to slide in the horizontal hole, and the cross bar 12 drives the fixed plate 14 to move. As a result, the indication position of the Z-shaped pointer 16 connected to the fixed plate 14 on the scale 17 changes. At the same time, multiple high-definition cameras 19 arranged obliquely can be used to capture the changes of the Z-shaped pointer 16 and the scale 17 in real time, so that the operator can monitor and judge in real time whether the advancement direction of the probe rod 6 is inclined, and then facilitate the operator to intuitively understand the position deviation of the probe rod 6 during the advancement process. This enables the staff to pause the advancement work in time, analyze and adjust the advancement state of the probe rod 6, ensure the effective monitoring of the advancement direction of the probe rod 6, and provide guarantee for the accuracy of the static cone penetration test data of the liquefied formation; After the static cone penetration test of the liquefied formation is completed, by controlling the contraction and reset of the first hydraulic cylinder 4, the output shaft end thereof pushes the assembly seat 5 and the probe rod 6 and the probe head 7 below it to move vertically upward. During this process, start the booster air pump 22 to operate, and supply pressurized air into the annular air cavity 25 in the annular fixing seat 24 through the air delivery pipe 23. The pressurized air blows obliquely downward from multiple oblique blowing holes 26, so as to blow away impurities such as soil attached to the surfaces of the probe rod 6 and the probe head 7, keep the surfaces of the probe rod 6 and the probe head 7 clean, which is beneficial to ensuring the normal operation of the probe rod 6 and the probe head 7 and the accuracy of the test data. Finally, control the four second hydraulic cylinders 202 to contract and reset, so that the four positioning bottom plates 204 rise, and the ground nails 205 at the bottom of the positioning bottom plates 204 are moved out of the ground soil, and then the whole device can be pushed away.

[0042] The above has introduced in detail a stable advancement device for the static cone penetration test of liquefied formations provided by the present application. Specific embodiments are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present application, several improvements and modifications can still be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A stable propulsion device for liquefied stratum static cone penetration test, characterized in that, It includes a base (1), an L-shaped support frame (2), a static cone penetrometer main body (3), a first hydraulic cylinder (4), a sounding rod (6), a probe (7) and a stable propulsion positioning and monitoring mechanism. The L-shaped support frame (2) is fixedly installed on the top of the base (1). The static cone penetrometer main body (3) is fixedly installed on the top of the L-shaped support frame (2). The first hydraulic cylinder (4) is fixedly installed on the inner wall of the top of the L-shaped support frame (2). The output shaft end of the first hydraulic cylinder (4) is fixedly installed with an assembly seat (5). The sounding rod (6) is detachably installed and fixed at the bottom of the assembly seat (5). An avoidance hole (8) is formed in the top of the base (1). The bottom end of the sounding rod (6) extends into the avoidance hole (8). The probe (7) is fixedly installed at the bottom end of the sounding rod (6). The probe (7) is electrically connected to the static cone penetrometer main body (3). The stable propulsion positioning and monitoring mechanism is arranged on the base (1). The stable propulsion positioning and monitoring mechanism is used to assist in positioning the propulsion direction of the sounding rod (6) and monitor whether the propulsion direction of the sounding rod (6) is inclined. The stable propulsion positioning and monitoring mechanism includes a plurality of cross bars (12), a plurality of abutting balls (13), a plurality of fixing plates (14) and a plurality of springs (15). A plurality of horizontally arranged holes are formed in the inner side wall of the avoidance hole (8) and are distributed in an equidistant annular manner. One ends of the plurality of cross bars (12) are respectively slidably installed in the corresponding horizontally arranged holes. The plurality of abutting balls (13) are respectively fixedly installed at one ends of the corresponding cross bars (12) outside the horizontally arranged holes. The sounding rod (6) is located between the plurality of abutting balls (13). The plurality of abutting balls (13) are all in sliding contact with the outer surface of the sounding rod (6). The plurality of fixing plates (14) are respectively fixedly sleeved on the corresponding cross bars (12). One ends of the plurality of springs (15) are respectively fixedly connected to the corresponding fixing plates (14). The other ends of the plurality of springs (15) are all fixedly connected to the inner side wall of the avoidance hole (8). The plurality of springs (15) are respectively sleeved on the corresponding cross bars (12).

2. The static penetration test stable propulsion device for liquefied formation according to claim 1, characterized in that: Flanges (9) are fixedly installed at the top end of the sounding rod (6) and the bottom of the assembly seat (5). The two flanges (9) are fixedly connected by bolts.

3. A static penetration test stable propulsion device for liquefied strata according to claim 1, characterized in that: A displacement sensor (10) is fixedly installed on one side of the assembly seat (5). Universal wheels (11) are rotatably installed at the four corners of the bottom of the base (1).

4. The stable propulsion device for liquefied stratum static cone penetration test according to claim 1, characterized in that: The stable propulsion positioning and monitoring mechanism further includes a plurality of Z-shaped pointers (16), a plurality of scales (17), a plurality of struts (18) and a plurality of high-definition cameras (19). One ends of the plurality of Z-shaped pointers (16) are respectively fixedly connected to the top sides of the corresponding fixing plates (14). The plurality of scales (17) are all fixedly installed on the top of the base (1) and are distributed in an equidistant annular shape. The other ends of the plurality of Z-shaped pointers (16) are all located above the base (1), and the ends of the plurality of Z-shaped pointers (16) outside the base (1) are respectively located directly above the corresponding scales (17). The plurality of struts (18) are all fixedly installed on the top of the base (1) and are distributed in an equidistant annular shape. The plurality of high-definition cameras (19) are respectively fixedly installed at the tops of the corresponding struts (18), and the plurality of high-definition cameras (19) are arranged obliquely.

5. The stable propulsion device for liquefied formation static cone penetration test according to claim 1, characterized in that: The outer surface of the abutting ball (13) is of a smooth surface structure.

6. The static penetration test stable propulsion device for liquefied formation according to claim 1, wherein: Positioning and leveling mechanisms (20) are provided at the four corners of the top of the base (1). The positioning and leveling mechanisms are used to fix and level the position of the base (1). The positioning and leveling mechanism (20) includes an L-shaped beam (201), a second hydraulic cylinder (202), a connecting seat (203), a positioning base plate (204), a plurality of ground anchor nails (205), a motor (206) and a threaded column (207). The L-shaped beam (201) is fixedly installed on the top of the base (1). The second hydraulic cylinder (202) is fixedly installed on the L-shaped beam (201). The connecting seat (203) is fixedly installed at the output shaft end of the second hydraulic cylinder (202). A threaded groove (2031) is formed in the bottom of the connecting seat (203). The positioning base plate (204) is located directly below the connecting seat (203). The plurality of ground anchor nails (205) are all fixedly installed at the bottom of the positioning base plate (204) and are distributed in an array. The motor (206) is fixedly installed on the top of the positioning base plate (204). The threaded column (207) is fixedly installed at the output shaft end of the motor (206). The top end of the threaded column (207) is threadedly installed in the threaded groove (2031).

7. A static penetration test stable propulsion device for liquefied strata according to claim 6, characterized in that: Guide ears (208) are fixedly installed on the outer walls on both sides of the connecting seat (203). Two guide vertical rods (209) are fixedly installed on the top of the positioning base plate (204). The two guide ears (208) are respectively slidably sleeved on the corresponding guide vertical rods (209).

8. The static penetration test stable propulsion device for liquefied strata according to claim 1, characterized in that: A plurality of spirit levels (21) are fixedly installed on the base (1), and the plurality of spirit levels (21) are evenly distributed.

9. The static penetration test stable propulsion device for liquefied strata according to claim 1, characterized in that: A supercharging air pump (22) is fixedly installed at the top of the base (1). The air outlet end of the supercharging air pump (22) is fixedly connected to an air delivery pipe (23). A ring-shaped fixing seat (24) is fixedly installed at the bottom of the base (1). The avoidance hole (8) communicates with the ring-shaped fixing seat (24). An annular air cavity (25) is formed in the ring-shaped fixing seat (24). One end of the air delivery pipe (23) penetrates through the base (1) and extends into the annular air cavity (25). A plurality of obliquely blowing air holes (26) distributed in an array are formed in the inner annular wall of the annular air cavity (25).

10. A static penetration test stable propulsion device for liquefied strata according to claim 1, characterized in that: A controller (27) is fixedly installed on the L-shaped support frame (2). A battery pack (28) is fixedly installed at the top of the base (1).

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