Diameter-adjustable probe rod and penetration device

Abstract

The utility model provides a diameter-adjustable probe rod and a penetration device, and belongs to the field of ocean engineering. The feeler lever comprises a first feeler lever and a second feeler lever, a first probe is arranged at the bottom of the first feeler lever, a second probe is arranged at the bottom of the second feeler lever, sensor modules are arranged in the first probe and the second probe, the second feeler lever is arranged in the first feeler lever in a sliding mode, and a limiting part is arranged on the second feeler lever. The limiting part is used for fixing the relative position of the first probe rod and the second probe rod. By adopting the diameter-adjustable probe rod and the penetration device provided by the embodiment of the utility model, the problem that the penetration operation is relatively difficult in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the field of marine engineering, in particular to a diameter-adjustable probe rod and a penetration device. Background Art

[0002] Seabed geological exploration is of great significance for understanding Earth's history, climate change and resource development. It not only helps to reveal the seabed topography, sediments, rocks and their formation process, but also provides valuable information for global climate change research, energy exploration and marine engineering construction.

[0003] When using seabed equipment to detect seabed geology, the probe rod is often used as a force medium to perform static pressure penetration of the probe. However, during the operation, especially during deep penetration operations, the penetration operation cannot continue due to the resistance of the front end of the probe and the friction of the side wall of the probe rod. The contact between the probe rod and the formation exerts a huge reaction on the equipment, especially when encountering dense formations.

[0004] The probe rod in the prior art usually adopts a round rod structure with a fixed diameter. When using this probe rod to detect underwater strata, the penetration operation is usually difficult due to the excessive friction of the front end resistance and the side wall of the probe rod. Utility Model Content

[0005] The embodiment of the utility model provides a probe rod with adjustable diameter and a penetration device, which can solve the problem that the penetration operation is difficult in the prior art. The technical solution is as follows:

[0006] In a first aspect, a diameter-adjustable probe rod comprises: a first probe rod and a second probe rod,

[0007] The first probe rod is cylindrical, and the second probe rod is slidably arranged inside the first probe rod. A first probe is arranged at the bottom of the first probe rod, and a second probe is arranged at the bottom of the second probe rod. Sensor modules are arranged in the first probe and the second probe for detecting sound, light, electricity and mechanical data during the drilling process. A limiting portion is arranged on the second probe rod, and the limiting portion is used to fix the relative positions of the first probe rod and the second probe rod.

[0008] Optionally, the limiting portion includes a mounting wing plate and a spring, the spring is arranged inside the second probe rod, the first probe rod is provided with a limiting groove matching the mounting wing plate, the side wall of the second probe rod is provided with a radially arranged installation groove, one side of the mounting wing plate is slidably arranged in the installation groove through the spring, and the other side matches the limiting groove.

[0009] Optionally, a third probe rod is further included, a third probe head is arranged at the bottom of the third probe rod, a sensor module is also arranged inside the third probe head, and the third probe rod is slidably arranged inside the second probe rod.

[0010] Optionally, the first probe rod, the second probe rod and the third probe rod are all formed by splicing together multiple sections of pipe bodies.

[0011] In a second aspect, a penetration device includes the aforementioned diameter-adjustable probe rod, and also includes a box body, wherein the first probe rod is vertically and slidably inserted into the box body, and a penetration mechanism is arranged in the box body, wherein the penetration mechanism is used to control the first probe rod and the second probe rod to move in a vertical direction.

[0012] Optionally, the penetration mechanism includes a clamping cylinder group, a penetration cylinder group and a shackle cylinder group, and there are two of the clamping cylinder group and the penetration cylinder group, and the two penetration cylinder groups are respectively arranged on both sides of the first probe rod, the penetration cylinder group is arranged at the bottom of the box body and its piston rod is arranged vertically upward, the clamping cylinder group is connected to the piston rod end of the penetration cylinder group, and the clamping cylinder group is arranged horizontally toward the first probe rod, the clamping cylinder group includes a first clamping cylinder and a second clamping cylinder, the first clamping cylinder matches the first probe rod, and the second clamping cylinder matches the second probe rod, the shackle cylinder group is arranged laterally above the clamping cylinder group, the first probe rod passes through the shackle cylinder group, and the shackle cylinder group includes a first shackle cylinder, the first shackle cylinder matches the first probe rod, and the first probe rod is spliced ​​by multiple sections of pipe body.

[0013] Optionally, the penetration mechanism further comprises an adjusting cylinder group, the adjusting cylinder group is arranged on the top of the box body and its piston rod is arranged vertically downward, and the shackle cylinder group is connected to the end of the piston rod of the adjusting cylinder group.

[0014] Optionally, a data acquisition box is provided in the box body, and the sensor module is signal-connected to the data acquisition box.

[0015] Optionally, a chamfer is provided between the top end surface and the side wall of the box body.

[0016] Optionally, the box body is a titanium alloy part.

[0017] The beneficial effects brought by the technical solution provided by the embodiment of the utility model include at least:

[0018] The embodiment of the utility model provides a probe rod and a penetration device with adjustable diameter. The probe rod is arranged in the form of a first probe rod and a second probe rod, and the diameter of the second probe rod is smaller than the diameter of the first probe rod, so that the second probe rod can be installed inside the first probe rod. When exploring a geologically soft stratum, the limit part limits the first probe rod and the second probe rod to be fixedly connected. The first probe rod and the second probe rod can be inserted into the stratum as a whole for detection, and the stratum data can be collected through the sensor module. When encountering a geologically hard stratum, the first probe rod encounters greater resistance when exploring downward. The time limit portion releases the fixed connection between the first probe rod and the second probe rod, and applies a downward penetration force to the second probe rod alone. When the same penetration force is applied, since the diameter of the second probe rod is smaller than that of the first probe rod, the penetration pressure of the second probe rod is greater than that of the first probe rod, thereby making it easier for the second probe rod to penetrate into harder geological formations. By setting the probe rod to multiple sections with different diameters, the penetration pressure of the probe rod can be increased, thereby making it easier to penetrate into harder geological formations, which can effectively solve the problem of difficult penetration operations in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the probe provided by the embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the limiting part provided in the embodiment of the utility model;

[0022] Figure 3 It is a schematic cross-sectional structure diagram of the second probe rod in the penetration state provided by the embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the overall structure of the second probe rod in the penetration state provided by the embodiment of the utility model;

[0024] Figure 5 It is a schematic cross-sectional structure diagram of a third probe rod in a penetration state provided by an embodiment of the utility model;

[0025] Figure 6 This is a schematic diagram of the overall structure of the third probe rod in the penetration state provided by the embodiment of the utility model;

[0026] Figure 7 It is a schematic diagram of the overall structure of the device provided by the embodiment of the utility model.

[0027] In the figure: 1-first probe rod; 11-first probe head; 101-sensor module; 2-second probe rod; 21-second probe head; 3-third probe rod; 31-third probe head; 4-limiting part; 41-mounting wing plate; 42-spring; 5-limiting groove; 6-installation groove; 7-box; 8-penetration mechanism; 81-clamping cylinder group; 811-first clamping cylinder; 812-second clamping cylinder; 813-third clamping cylinder; 82-penetration cylinder group; 83-shackle cylinder group; 831-first shackle cylinder; 832-second shackle cylinder; 84-adjusting cylinder group; 9-data acquisition box. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Figure 1 It is a schematic diagram of the overall structure of the probe provided by the embodiment of the utility model; Figure 2 It is a schematic diagram of the structure of the limiting part provided in the embodiment of the utility model; Figure 3 It is a schematic cross-sectional structure diagram of the second probe rod in the penetration state provided by the embodiment of the utility model; Figure 4 This is a schematic diagram of the overall structure of the second probe rod in the penetration state provided by the embodiment of the utility model; Figure 5 It is a schematic cross-sectional structure diagram of a third probe rod in a penetration state provided by an embodiment of the utility model; Figure 6 This is a schematic diagram of the overall structure of the third probe rod in the penetration state provided by the embodiment of the utility model; Figure 7 This is a schematic diagram of the overall structure of the device provided by the embodiment of the utility model. Figures 1 to 7 A diameter-adjustable probe rod is shown, comprising: a first probe rod 1 and a second probe rod 2, the first probe rod 1 is cylindrical, the second probe rod 2 is slidably arranged inside the first probe rod 1, a first probe 11 is arranged at the bottom of the first probe rod 1, and a second probe 21 is arranged at the bottom of the second probe rod 2, and sensor modules 101 are arranged in the first probe 11 and the second probe 21 for detecting sound, light, electricity and mechanical data during the drilling process, and a limiting portion 4 is arranged on the second probe rod 2, and the limiting portion 4 is used to fix the relative positions of the first probe rod 1 and the second probe rod 2.

[0030] Exemplarily, in the embodiment of the utility model, the first probe 11 and the second probe 21 are used to store the sensor module 101. In the initial state, the first probe 1 and the second probe 2 are fixed together by the limiter 4, and the first probe 1 and the second probe 2 can be used to explore the geology of the seabed. The penetration force is applied to the first probe 1 and the second probe 2 by the penetration mechanism 8. At this time, the first probe 11 and the second probe 21 act on the seabed formation at the same time, and the force area of ​​the penetration force is the diameter of the first probe 1. When encountering a geologically harder formation, the penetration pressure can be increased by reducing the force area while the penetration force remains unchanged. At this time, the first probe 1 and the second probe 2 are separated by the limiter 4, and the penetration force is applied to the second probe 2, thereby increasing the penetration pressure, so that the second probe 2 can continue to penetrate downward. Compared with the traditional technology that only uses a fixed diameter probe rod for exploration, the probe rod in this embodiment can use a second probe rod 2 with a smaller diameter for exploration when encountering a harder formation, so that the probe rod can be more easily applied to different detection environments, thereby improving the versatility of the probe rod.

[0031] The embodiment of the utility model provides a probe rod and a penetration device with adjustable diameter. The probe rod is set in the form of a first probe rod 1 and a second probe rod 2. The diameter of the second probe rod 2 is smaller than the diameter of the first probe rod, so that the second probe rod 2 can be installed inside the first probe rod 1. When exploring a geologically soft stratum, the limit part 4 limits the fixed connection between the first probe rod 1 and the second probe rod 2. The first probe rod 1 and the second probe rod 2 can be inserted into the stratum as a whole for detection. The stratum data is collected through the sensor module 101. When encountering a geologically hard stratum, the first probe rod 1 encounters greater resistance when exploring downward. At this time, the limiter 4 releases the fixed connection between the first probe rod 1 and the second probe rod 2, and applies a downward penetration force to the second probe rod 2 alone. When the same penetration force is applied, the second probe rod 2 has a greater penetration pressure than the first probe rod 1 because the diameter of the second probe rod 2 is smaller than that of the first probe rod 1, so that the second probe rod 2 can penetrate the geologically harder strata more easily. By setting the probe rod to multiple sections with different diameters, the penetration pressure of the probe rod can be increased, so that it can penetrate the geologically harder strata more easily, which can effectively solve the problem of difficult penetration operations in the prior art. The sensor module 101 can not only detect acoustic, optical, electrical and mechanical data, but also measure temperature and electromagnetic data. Mechanical data, for example, includes intervertebral resistance, sidewall friction, air water pressure, etc. acting on the sensor module 101. Acoustic data includes beam testing, hydroacoustic and hydrophonic testing, etc. Electromagnetic data includes electrical dissociation, electronic radioactivity, magnetic force, etc. Optical data includes spectral testing, camera irradiation, etc.

[0032] Optionally, the limiting portion 4 includes a mounting wing plate 41 and a spring 42, the spring 42 is arranged inside the second probe rod 2, a limiting groove 5 matching the mounting wing plate 41 is opened on the first probe rod 1, and a radially arranged mounting groove 6 is opened on the side wall of the second probe rod 2, one side of the mounting wing plate 41 is slidably set in the mounting groove 6 through the spring 42, and the other side matches the limiting groove 5.

[0033] For example, in the embodiment of the present utility model, Figure 2 As shown, the mounting wing plate 41 is an inverted triangle structure. In the initial state, under the action of the spring 42, the mounting wing plate 41 extends out of the second probe rod 2 and is fixed with the limit groove 5. The penetration mechanism 8 applies a downward penetration force to the first probe rod 1 and the second probe rod 2 as a whole. When the first probe rod 1 and the second probe rod 2 need to be separated, the second probe rod 2 slides with the first probe rod 1 by applying a downward penetration force to the second probe rod 2 alone. Under the thrust of the lower edge of the limit groove 5, the mounting wing plate 41 returns to the inside of the second probe rod through the mounting groove 6. At this time, the spring 42 is compressed, so that the second probe rod 2 and the first probe rod 1 can be separated, so that the second probe rod 2 continues to probe downward. By setting this structure, the structure is simple and the operation is convenient, thereby improving the convenience of operation of the probe rod.

[0034] Optionally, a third probe rod 3 is further included. A third probe head 31 is disposed at the bottom of the third probe rod 3 . A sensor module 101 is also disposed inside the third probe head 31 . The third probe rod 3 is slidably disposed inside the second probe rod 2 .

[0035] For example, in the embodiment of the present utility model, Figure 1 As shown, the third probe rod 3 and the second probe rod 2 can also be fixed by a limiting portion 4. By setting a third probe rod 3 with a smaller diameter, the probe rod can penetrate more easily when detecting deeper and harder strata, thereby further improving the versatility of the probe rod.

[0036] Optionally, the first probe rod 1 , the second probe rod 2 and the third probe rod 3 are all formed by splicing together multiple sections of pipes.

[0037] For example, in the embodiment of the utility model, during the detection process of the probe rod, the length is usually longer, and the first probe rod 1, the second probe rod 2 and the third probe rod 3 are arranged to be a structure formed by splicing multiple sections of pipe bodies. This makes it more convenient to store or transport the probe rods, and the splicing method can be a threaded connection. When in use, the splicing is also relatively simple, thereby improving the ease of operation of the probe rod.

[0038] A penetration device includes the aforementioned diameter-adjustable probe rod and a box body 7, in which a first probe rod 1 is vertically and slidably inserted, and a penetration mechanism 8 is arranged inside the box body 7, and the penetration mechanism 8 is used to control the first probe rod 1 and the second probe rod 2 to move in the vertical direction.

[0039] For example, in an embodiment of the utility model, during geological exploration of the seabed, the seabed is usually far away from the water surface, and the probe cannot be directly extended from the hull above the water surface to the seabed for exploration. Therefore, the exploration is carried out in the form of a hanging box 7 and a probe. The probe is inserted into the box 7, and the box 7 is lowered to the seabed by a crane. The penetration mechanism 8 then applies a vertical penetration force to the first probe 1 and the second probe 2, so that the first probe 1 and the second probe 2 are extended into the seabed stratum for exploration. In this embodiment, a third probe 3 can also be added, so that the probe can more easily penetrate into the harder geological stratum, further improving the versatility of the device.

[0040] Optionally, the penetration mechanism 8 includes a clamping cylinder group 81, a penetration cylinder group 82 and a shackle cylinder group 83. The clamping cylinder group 81 and the penetration cylinder group 82 are provided with two, and the two penetration cylinder groups 82 are respectively provided on both sides of the first probe rod 1. The penetration cylinder group 82 is provided at the bottom of the box body 7 and its piston rod is arranged vertically upward. The clamping cylinder group 81 is connected to the piston rod end of the penetration cylinder group 82. The clamping cylinder group 81 is arranged horizontally toward the first probe rod 1. The clamping cylinder group 81 includes a first The clamping cylinder 811 and the second clamping cylinder 812, the first clamping cylinder 811 matches the first probe rod 1, the second clamping cylinder 812 matches the second probe rod 2, the shackle cylinder group 83 is arranged laterally above the clamping cylinder group 81, the first probe rod 1 passes through the shackle cylinder group 83, the shackle cylinder group 83 includes a first shackle cylinder 831, the first shackle cylinder 831 matches the first probe rod 1, the first probe rod 1 is spliced ​​together by multiple sections of pipe body, and the multiple sections of pipe body are connected by threads.

[0041] Exemplarily, in the embodiment of the utility model, the clamping cylinder group 81 also includes a third clamping cylinder 813, and the third clamping cylinder 813 matches the third probe rod 3. It also includes a second shackle cylinder 832, and the second shackle cylinder 832 matches the second probe rod 2. The piston rod end of the first shackle cylinder 831 is provided with a clamping claw that matches the first probe rod 1, and the piston rod end of the second shackle cylinder 832 is provided with a clamping claw that matches the second probe rod 2. Clamping claws are provided at the piston rod ends of the clamping cylinder group 81, and the sizes of the clamping claws on the first clamping cylinder 811, the second clamping cylinder 812 and the third clamping cylinder 813 are reduced in sequence, in order to match the outer circumferential surfaces of the first probe rod 1, the second probe rod 2 and the third probe rod 3 respectively, so as to stably clamp them. There are two clamping cylinder groups 81 and penetration cylinder groups 82, and the two penetration cylinder groups 82 are respectively arranged on both sides of the first probe rod 1, so that the penetration mechanism 8 can apply a stable penetration force to the probe rod. When the first probe rod 1 performs a downward exploration operation, the piston rod of the penetration cylinder group 82 is first extended to the maximum length, and the first probe rod 1 is clamped and fixed by the first clamping cylinder 811. At this time, the piston rod of the penetration cylinder group 82 is shortened to the minimum length, that is, a downward penetration force can be applied to the first probe rod 1, and the above steps are repeated to implement the penetration operation process until the first probe rod 1 can no longer extend into the deeper formation. At this time, the first clamping cylinder 811 still clamps the first probe rod 1, and the first shackle cylinder 831 is started to clamp the upper part of the first probe rod 1. Since the first probe rod 1 is formed by threaded connection of multiple sections of pipe body, the first shackle cylinder 831 is started to clamp the first probe rod 1 and rotate it, so that the upper half of the first probe rod 1 that is not inserted into the formation is separated from the lower half that is inserted into the formation, so as to realize the segmented unloading process, and the staff can recover the detached upper half of the first probe rod 1. Since the first probe rod 1 in the upper part is unloaded and separated, the second probe rod 2 is exposed to the outside at this time. The second probe rod 2 is clamped and fixed by the second clamping cylinder 812, and the above penetration operation process is repeated. When the second probe rod 2 can no longer probe into the deeper formation, the above segmented unloading process is repeated to expose the third probe rod 3 to the outside, and the third probe rod 3 is clamped and fixed by the third clamping cylinder 813, and the above penetration operation process is repeated. Finally, when the third probe rod 3 can no longer probe into the deeper formation, the penetration operation process ends, and the device is directly pulled out. Under the action of the mounting wing plate 41, all probe rods inserted into the formation can also be synchronously recovered, and finally all equipment is recovered to the operating vessel. The design of the probe rod from thick to thin is also in line with the formation conditions faced. The formation is relatively soft in the early stage, and the reaction force is relatively small. Increasing the contact area can also make the data acquisition capability more sensitive. On the surface of the seabed, the lateral support force of the formation on the probe rod is relatively small, and a thicker probe rod system is also less likely to bend. When entering deeper strata, the reaction force of the strata becomes greater, and a smaller diameter has a stronger breakthrough force under the condition of the same penetration force.The strata also provide stronger lateral support for the thin probe rod, so the thin probe rod that penetrates deep into the strata is not easy to bend. The upper part has the outer probe rod that was previously left in the strata as an outer sleeve, which plays a role in protection and preventing bending.

[0042] Optionally, the penetration mechanism 8 further comprises an adjusting cylinder group 84 , which is arranged at the top of the box body 7 and has a piston rod arranged vertically downward, and the shackle cylinder group 83 is connected to the end of the piston rod of the adjusting cylinder group 84 .

[0043] For example, in the embodiment of the utility model, since the probe rods are all designed in sections, when the probe rods are lowered and a sectioned unloading process is required, the shackle cylinder group 83 and the clamping cylinder group 81 may be clamped on the same section of the probe rod at the same time. At this time, the probe rod cannot be disassembled by rotation. By adding an adjustment cylinder group 84, the height of the shackle cylinder group 83 can be adjusted so that the shackle cylinder group 83 is clamped at different sections of the probe rod, so that the probe rod can be unloaded and separated. By setting the adjustment cylinder group 84, the convenience of operation of the device is improved.

[0044] Optionally, a data acquisition box 9 is provided in the box body 7 , and the sensor module 101 is signal-connected to the data acquisition box 9 .

[0045] For example, in the embodiment of the utility model, a third probe 31 is provided at the bottom of the third probe rod 3, and a sensor module 101 is also provided inside the third probe 31. Since the box body 7 is located at a distance from the water surface, the data collected by the sensor cannot be directly transmitted to the water surface. By providing a data acquisition box 9 in the box body 7, the data collected by the sensor module 101 can be first stored in the data acquisition box 9, and then the collected data can be processed after the box body is recovered. By providing the data acquisition box 9, the practicality of the device is improved.

[0046] Optionally, a chamfer is provided between the top end surface and the side wall of the box body 7 .

[0047] For example, in an embodiment of the utility model, after the operation of the device is completed, the device needs to be lifted out of the water. By setting a chamfer on the top of the box 7, the resistance in the process of lifting the box 7 out of the water can be reduced, so that the device can be recovered more easily, thereby further improving the operational convenience of the device.

[0048] Optionally, the box body 7 is a titanium alloy part.

[0049] For example, in the embodiment of the utility model, the box body 7 is made of titanium alloy. Titanium alloy has the characteristics of high strength and good corrosion resistance. The high strength can physically protect the equipment inside the box body 7. At the same time, the high corrosion resistance can prevent the box body 7 from being corroded by seawater and causing damage to its internal equipment, thereby increasing the service life of the device.

[0050] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantity limitation, but indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0051] The above description is only an optional embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A probe with adjustable diameter, characterized in that: include: The first probe rod (1) and the second probe rod (2), The first probe rod (1) is cylindrical, the second probe rod (2) is slidably arranged inside the first probe rod (1), a first probe (11) is arranged at the bottom of the first probe rod (1), and a second probe (21) is arranged at the bottom of the second probe rod (2), the first probe (11) and the second probe (21) are both provided with sensor modules (101) for detecting sound, light, electricity and mechanical data during the drilling process, and a limiting portion (4) is provided on the second probe rod (2), and the limiting portion (4) is used to fix the relative position of the first probe rod (1) and the second probe rod (2), The limiting portion (4) comprises a mounting wing plate (41) and a spring (42), wherein the spring (42) is arranged inside the second probe rod (2), the first probe rod (1) is provided with a limiting groove (5) matching the mounting wing plate (41), and the side wall of the second probe rod (2) is provided with a mounting groove (6) arranged in a radial direction, one side of the mounting wing plate (41) is slidably arranged in the mounting groove (6) via the spring (42), and the other side matches the limiting groove (5).

2. The diameter-adjustable probe rod according to claim 1, characterized in that: It also comprises a third probe rod (3), a third probe head (31) being arranged at the bottom of the third probe rod (3), a sensor module (101) also being arranged inside the third probe head (31), and the third probe rod (3) being slidably arranged inside the second probe rod (2).

3. The diameter-adjustable probe rod according to claim 2, characterized in that: The first probe rod (1), the second probe rod (2) and the third probe rod (3) are all formed by splicing together a plurality of sections of pipe.

4. A penetration device, comprising a diameter-adjustable probe rod according to any one of claims 1 to 3, characterized in that: It also comprises a box body (7), wherein the first probe rod (1) is vertically slidably inserted into the box body (7), and a penetration mechanism (8) is arranged in the box body (7), wherein the penetration mechanism (8) is used to control the first probe rod (1) and the second probe rod (2) to move in a vertical direction.

5. A penetration device according to claim 4, characterized in that: The penetration mechanism (8) comprises a clamping cylinder group (81), a penetration cylinder group (82) and a shackle cylinder group (83). The clamping cylinder group (81) and the penetration cylinder group (82) are provided with two, and the two penetration cylinder groups (82) are respectively provided on both sides of the first probe rod (1). The penetration cylinder group (82) is provided at the bottom of the box body (7) and its piston rod is arranged vertically upward. The clamping cylinder group (81) is connected to the piston rod end of the penetration cylinder group (82). The clamping cylinder group (81) is arranged horizontally toward the first probe rod (1). The clamping cylinder group (81) comprises a first clamping cylinder group (81) and a second penetration cylinder group (82). The invention relates to a first shackle cylinder (831) and a second clamping cylinder (812), wherein the first clamping cylinder (811) matches the first probe rod (1), and the second clamping cylinder (812) matches the second probe rod (2). The shackle cylinder group (83) is arranged laterally above the clamping cylinder group (81), and the first probe rod (1) passes through the shackle cylinder group (83). The shackle cylinder group (83) comprises a first shackle cylinder (831), and the first shackle cylinder (831) matches the first probe rod (1). The first probe rod (1) is formed by splicing a plurality of pipe sections, and the plurality of pipe sections are connected by threads.

6. A penetration device according to claim 5, characterized in that: The penetration mechanism (8) further comprises an adjusting cylinder group (84), wherein the adjusting cylinder group (84) is arranged at the top of the box body (7) and its piston rod is arranged vertically downward, and the shackle cylinder group (83) is connected to the end of the piston rod of the adjusting cylinder group (84).

7. A penetration device according to claim 4, characterized in that: A data acquisition box (9) is arranged in the box body (7), and the sensor module (101) is signal-connected to the data acquisition box (9).

8. A penetration device according to claim 4, characterized in that: A chamfer is provided between the top end surface and the side wall of the box body (7).

9. A penetration device according to claim 4, characterized in that: The box body (7) is a titanium alloy part.

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