A high-precision static cone penetration probe apparatus
By designing components such as the insertion ring, air chamber, and positioning block, the problem of the difference between the initial position of the cone tip of the static penetrometer and the sensor was solved, achieving high-precision detection data, preventing dirt accumulation, and ensuring the accuracy of the detection data.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUZHOU ZHONGHE SURVEY CO LTD
- Filing Date
- 2025-07-08
- Publication Date
- 2026-06-12
AI Technical Summary
The cone-shaped tip of the existing static cone penetrometer is easily damaged after contacting the sensor, and the threaded connection causes initial position differences, affecting the accuracy of the detection data.
The connection mechanism, which uses components such as an insertion ring, air chamber, slide plate, and positioning block, ensures precise alignment between the cone tip and the sensor. The precise positioning of the cone tip is achieved through the cooperation of air pressure and threaded ring, and a dust removal component is provided to prevent dirt accumulation.
It achieves precise positioning of the cone tip and the sensor, avoids data errors, effectively prevents dirt accumulation, and ensures the accuracy of the detection data.
Smart Images
Figure CN224351183U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of land exploration, and in particular to a high-precision static cone penetration test device. Background Technology
[0002] Static cone penetration testing (CPPT) involves using a pressure device to press a probe with a probe tip into the test soil layer. By measuring the penetration resistance of the soil through a measurement system, certain basic physical and mechanical properties of the soil can be determined, such as the soil's deformation modulus and allowable bearing capacity.
[0003] The basic principle of a static cone penetrometer is to use quasi-static force to press a probe containing a sensor into the soil at a constant speed. Since the hardness of different soils varies, the resistance experienced by the probe will naturally be different. The sensor inputs this penetration resistance of different magnitudes into the recording instrument via electrical signals. Then, by using the qualitative and statistical correlation between the penetration resistance and the engineering geological characteristics of the soil, the engineering geological investigation objectives such as obtaining soil profiles, providing shallow foundation bearing capacity, selecting pile end bearing layers, and estimating single pile bearing capacity can be achieved.
[0004] To ensure that the static cone penetrometer can be successfully driven into the soil, a conical area is often set at the end of the penetrometer. This conical area contacts the sensor probe, transmitting the resistance signal to the sensor. However, existing penetrometers are often integrated or fixed with threaded connections. The tip of the conical area is prone to damage when it comes into contact with hard soil. With threaded connections, the initial position of the tip and the sensor can vary depending on the number of rotations. Furthermore, after prolonged use, dirt can accumulate at the corners, preventing the tip from rotating to the proper position and resulting in inconsistencies in the detected data. Therefore, a high-precision static cone penetrometer probe device is proposed to solve these problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a high-precision static cone penetration probe device, which aims to improve the problem in the prior art that after the end cone tip is replaced, the initial position of the re-fixed cone tip and the sensor contact point are different, resulting in differences in the detection data.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-precision static penetration probe device, comprising a probe body, a sensor disposed inside the probe body, the receiving end of the sensor penetrating through the inner wall of the probe body, a conical tip disposed on the front side of the probe body, the conical tip being connected to the probe body via a connecting mechanism, and a dust removal component disposed inside the probe body;
[0007] The connecting mechanism includes an insertion ring, the front end of which is rotatably connected to the rear end of the cone tip. An air pressure chamber is formed on the inner wall of the insertion ring, and a sliding plate is piston-connected to the inner wall of the air pressure chamber. An inflation chamber is formed on the inner wall of the insertion ring, and a moving plate is piston-connected to the inner wall of the inflation chamber. A positioning block is fixedly connected to one end of the moving plate away from the middle of the probe body. A pushing component is provided on the front side of the sliding plate, and an annular groove is formed on the inner wall of the probe body.
[0008] As a further description of the above technical solution:
[0009] The pushing assembly includes a threaded ring, the front end of which is fixedly connected to the rear surface of the conical tip, a movable ring threadedly connected to the outer wall of the threaded ring, the outer wall of the movable ring being slidably connected to the inner wall of the insertion ring, a control rod fixedly connected to the rear surface of the movable ring, and the rear end of the control rod being fixedly connected to the front surface of the slide plate.
[0010] As a further description of the above technical solution:
[0011] The width of the positioning block is the same as the width of the annular groove, and the positioning block has inclined chamfers at both ends on the side away from the middle of the probe body.
[0012] As a further description of the above technical solution:
[0013] The outer wall of the insertion ring is fixedly connected to a positioning protrusion, and the inner wall of the probe body is fixedly connected to a positioning groove.
[0014] As a further description of the above technical solution:
[0015] The dust removal assembly includes a dust pushing block, the outer wall of which is slidably connected to the inner wall of the probe body, the rear surface of which is elastically connected to the inner wall of the probe body by a spring, and a limit component is provided on the rear side of the dust pushing block and the interior of the probe body.
[0016] As a further description of the above technical solution:
[0017] The limiting component includes a limiting groove, which is formed on the inner wall of the probe body. A limiting block is slidably connected to the inner wall of the limiting groove. A connecting rod is fixedly connected to the front surface of the limiting block, and the front end of the connecting rod is fixedly connected to the rear surface of the dust pushing block.
[0018] As a further description of the above technical solution:
[0019] The length of the dust-pushing block is longer than the width of the annular groove.
[0020] As a further description of the above technical solution:
[0021] The length of the connecting rod is longer than the length of the insertion ring, and the length of the connecting rod is shorter than the sum of the lengths of the insertion ring and the dust pusher block.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, by setting up an insertion ring, air chamber, sliding plate, air chamber, positioning block, annular groove, threaded ring, moving ring, control rod, etc., it is ensured that the positioning block can be moved in the direction of entering the annular groove by rotating the cone tip. Thus, by using the inclined surface of the positioning block, it is ensured that the positioning block can accurately enter the annular groove, thereby ensuring that the distance between the cone tip and the sensor is consistent after installation, and that the detection data will not be erroneous due to the initial position not being fixed.
[0024] 2. In this utility model, by setting up a dust pusher block, spring, limiting component, limiting groove, limiting block, and connecting rod, it is ensured that the attachment in the groove at the front of the probe body can be pushed out by the movement of the dust pusher block, thereby ensuring that dirt does not easily accumulate in the groove at the front of the probe body, and achieving the effect of preventing the cone tip from being unable to move to the designated position due to dirt on the corners. Attached Figure Description
[0025] Figure 1 This is a three-dimensional structural diagram of the overall structure of this utility model;
[0026] Figure 2 This is a three-dimensional cross-sectional diagram of the overall structure of this utility model.
[0027] Figure 3 This is a three-dimensional structural diagram of the conical tip, dust removal component, and connecting mechanism of this utility model;
[0028] Figure 4 This is a three-dimensional cross-sectional view of the overall structure of this utility model;
[0029] Figure 5 In this utility model Figure 4 Enlarged schematic diagram of the three-dimensional structure of part A.
[0030] Legend:
[0031] 1. Probe body; 2. Sensor; 3. Conical tip; 4. Connecting mechanism; 5. Dust removal assembly; 41. Insertion ring; 42. Air pressure chamber; 43. Slide plate; 44. Inflation chamber; 45. Moving plate; 46. Positioning block; 47. Pushing assembly; 48. Annular groove; 471. Threaded ring; 472. Moving ring; 473. Control rod; 49. Positioning protrusion; 410. Positioning groove; 51. Dust pushing block; 52. Spring; 53. Limiting assembly; 531. Limiting groove; 532. Limiting block; 533. Connecting rod. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0033] Reference Figures 1-3 The present invention provides an embodiment of a high-precision static cone penetration test device, comprising a probe body 1, which is the main body of the high-precision static cone penetration test probe. A sensor 2 is disposed inside the probe body 1, and the receiving end of the sensor 2 penetrates through the inner wall of the probe body 1. A conical tip 3 is disposed on the front side of the probe body 1. When the conical tip 3 is installed, the groove on the rear side of the conical tip 3 is in contact with the surface of the sensor 2, thereby ensuring that the resistance experienced by the conical tip 3 can be transmitted to the sensor 2.
[0034] Reference Figure 2 and Figure 3 The cone tip 3 is connected to the probe body 1 via a connecting mechanism 4. The connecting mechanism 4 includes an insertion ring 41. A positioning protrusion 49 is fixedly connected to the outer wall of the insertion ring 41, and a positioning groove 410 is fixedly connected to the inner wall of the probe body 1. The shape of the positioning protrusion 49 matches the shape of the positioning groove 410. By inserting the positioning protrusion 49 into the positioning groove 410, it is ensured that when the insertion ring 41 is inserted into the front opening of the probe body 1, it can only slide back and forth relative to the probe body 1, but cannot rotate relative to the probe body 1. The front end of the insertion ring 41 is rotatably connected to the rear end of the cone tip 3.
[0035] Reference Figure 2 , Figure 4 and Figure 5 The inner wall of the insertion ring 41 is provided with a pressure chamber 42, which is cylindrical in shape. A sliding plate 43 is connected to the inner wall of the pressure chamber 42 by a piston. The sliding plate 43 moves back and forth relative to the pressure chamber 42. The outer wall of the sliding plate 43 is provided with a rubber coating. The outer wall of the sliding plate 43 fits against the inner wall of the pressure chamber 42. The inner wall of the insertion ring 41 is provided with an inflation chamber 44, which is rectangular in shape. The side edge of the inflation chamber 44 away from the middle of the probe body 1 is provided with a protrusion to prevent its internal components from falling out. The interior of the inflation chamber 44 is connected to the interior of the pressure chamber 42. The inner wall of the probe body 1 is provided with a groove that connects the inflation chamber 44 and the pressure chamber 42. A moving plate 45 is connected to the inner wall of the inflation chamber 44 by a piston. A positioning block 46 is fixedly connected to the end of the moving plate 45 away from the middle of the probe body 1. The positioning block 46 is provided with inclined chamfers at both ends on the side away from the middle of the probe body 1.
[0036] Reference Figure 4 and Figure 5 A pushing component 47 is provided on the front side of the slide plate 43. The pushing component 47 includes a threaded ring 471, the thread of which is provided on its outer circumferential surface. The front end of the threaded ring 471 is fixedly connected to the rear surface of the cone tip 3. A movable ring 472 is threadedly connected to the outer wall of the threaded ring 471. The thread of the movable ring 472 is provided on its inner circumferential surface. The outer wall of the movable ring 472 is slidably connected to the inner wall of the insertion ring 41. The sliding direction of the movable ring 472 relative to the insertion ring 41 is back-and-forth sliding. A control rod 473 is fixedly connected to the rear surface of the movable ring 472. The rear end of the control rod 473 is fixedly connected to the front surface of the slide plate 43. The control rod 473 is made of rigid material. The setting of 73 ensures that when the moving ring 472 moves backward, the sliding plate 43 can be driven to move backward by the control rod 473. The inner wall of the probe body 1 is provided with an annular groove 48. The width of the positioning block 46 is the same as the width of the annular groove 48. With the same width, it is ensured that the positioning block 46 can just enter the annular groove 48 and achieve the positioning effect after it is fully entered. By setting the inclined chamfer of the positioning block 46, it is ensured that if the initial position of the positioning block 46 differs from that of the annular groove 48 in the front-back direction, the positioning block 46 can gradually move towards the mutual alignment direction through the contact between its inclined surface and the inner wall of the annular groove 48 during the slow outward movement of the positioning block 46, and finally achieve the positioning effect.
[0037] Reference Figures 2-4 The probe body 1 is equipped with a dust removal component 5, which includes a dust pushing block 51. The outer wall of the dust pushing block 51 is attached to the inner wall of the probe body 1 and is slidably connected to the inner wall of the probe body 1. The rear surface of the dust pushing block 51 is elastically connected to the inner wall of the probe body 1 through a spring 52. The front end of the spring 52 is fixedly connected to the rear surface of the dust pushing block 51, and the rear end of the spring 52 is fixedly connected to the inner wall of the probe body 1. Since the cone tip 3 is fixed in the same position each time, when the cone tip 3 indirectly squeezes the spring 52 through the insertion ring 41 and the dust pushing block 51, the spring 52 is compressed to the same degree. Therefore, the elastic force indirectly generated on the cone tip 3 is the same, so it will not affect the final data result.
[0038] Reference Figures 2-4 A limiting component 53 is provided on the rear side of the dust pushing block 51 and the interior of the probe body 1. The limiting component 53 includes a limiting groove 531, which is formed on the inner wall of the probe body 1. An annular protrusion is provided on the inner wall of the limiting groove 531 near the front side to block its internal components and prevent them from falling. A limiting block 532 is slidably connected to the inner wall of the limiting groove 531. The diameter of the limiting block 532 is larger than the inner diameter of the annular protrusion on the front inner wall of the limiting groove 531. A connecting rod 533 is fixedly connected to the front surface of the limiting block 532. The front end of the connecting rod 533 is fixedly connected to the rear surface of the dust pushing block 51.
[0039] Working principle: When it is necessary to replace the cone tip 3 during use, the operator rotates the cone tip 3 while manually fixing the probe body 1. At this time, since the insertion ring 41 is in the groove at the front of the probe body 1 and the positioning protrusion 49 is in the positioning groove 410, the insertion ring 41 can only move back and forth relative to the probe body 1, but cannot rotate relative to it. Therefore, the cone tip 3 rotates relative to the insertion ring 41.
[0040] When the cone tip 3 rotates, it drives the threaded ring 471 to rotate. Since the moving ring 472 is fixed to the insertion ring 41, the insertion ring 41 moves forward under the combined action of its internal thread and the external thread of the moving ring 472, thereby driving the control rod 473 to move forward.
[0041] When the control lever 473 moves forward, it drives the slide plate 43 to move forward, thereby reducing the air pressure inside the air chamber 42. Therefore, the gas inside the inflation chamber 44 is drawn into the air chamber 42, and the air pressure inside the inflation chamber 44 decreases thereafter.
[0042] When the air pressure inside the inflation chamber 44 decreases, the moving plate 45 is sucked into the interior of the inflation chamber 44, thereby driving the positioning block 46 into the inflation chamber 44. Therefore, the fixing effect between the positioning block 46 and the probe body 1 is released at this time.
[0043] At this point, the staff can move the probe body 1 forward to remove the cone tip 3.
[0044] After the cone tip 3 is removed, the dust pusher 51 moves forward under the elastic force of the spring 52.
[0045] Since most of the dirt in the groove at the front of the probe body 1 is dirt that enters through the gap between the cone tip 3 and the probe body 1 during use, after the cone tip 3 is reinstalled, the dirt is easily moved to a deeper position by the push of the rear of the cone tip 3. At this time, the dust pusher 51 pushes out the dirt stuck in the groove at the front of the probe body 1 after the cone tip 3 is removed, so this situation is not likely to occur.
[0046] Subsequently, the staff inserted the newly replaced cone tip 3 into the groove at the front of the probe body 1, and made the positioning protrusion 49 fit into the positioning groove 410.
[0047] Subsequently, the cone tip 3 is rotated in the opposite direction to the previous rotation, thereby causing the cone tip 3 to drive the threaded ring 471 to rotate, which in turn causes the threaded ring 471 to drive the moving ring 472 and the control rod 473 to move backward during the rotation.
[0048] During the movement, the slide plate 43 moves backward, which causes the gas inside the air pressure chamber 42 to be squeezed into the air chamber 44, thus causing the slide plate 43 and the positioning block 46 to move outward.
[0049] When the positioning block 46 moves outward, its inclined surface first contacts the inner wall of the annular groove 48. As the positioning block 46 gradually moves outward, under the action of its inclined surface, the positioning block 46 gradually moves in the direction aligned with the annular groove 48. During the movement of the positioning block 46, it also drives the insertion ring 41 to produce the same backward displacement. Therefore, after the cone tip 3 is installed, its front-back direction is unique and fixed, so it is not easy for the sensor 2 to monitor inaccurate data due to different initial positions after installation.
[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A high-precision static cone penetration test device, comprising a probe body (1), characterized in that: The probe body (1) is equipped with a sensor (2) inside. The receiving end of the sensor (2) penetrates the inner wall of the probe body (1). A cone tip (3) is provided on the front side of the probe body (1). The cone tip (3) is connected to the probe body (1) through a connecting mechanism (4). A dust removal assembly (5) is provided inside the probe body (1). The connecting mechanism (4) includes an insertion ring (41), the front end of which is rotatably connected to the rear end of the cone tip (3). An air pressure chamber (42) is provided on the inner wall of the insertion ring (41), and a sliding plate (43) is piston-connected to the inner wall of the air pressure chamber (42). An inflation chamber (44) is provided on the inner wall of the insertion ring (41), and a moving plate (45) is piston-connected to the inner wall of the inflation chamber (44). A positioning block (46) is fixedly connected to one end of the moving plate (45) away from the middle of the probe body (1). A pushing component (47) is provided on the front side of the sliding plate (43), and an annular groove (48) is provided on the inner wall of the probe body (1).
2. The high-precision static cone penetration test device according to claim 1, characterized in that: The pushing assembly (47) includes a threaded ring (471), the front end of which is fixedly connected to the rear surface of the cone tip (3), a movable ring (472) is threadedly connected to the outer wall of the threaded ring (471), the outer wall of the movable ring (472) is slidably connected to the inner wall of the insertion ring (41), a control rod (473) is fixedly connected to the rear surface of the movable ring (472), and the rear end of the control rod (473) is fixedly connected to the front surface of the slide plate (43).
3. The high-precision static cone penetration test device according to claim 1, characterized in that: The width of the positioning block (46) is the same as the width of the annular groove (48), and the positioning block (46) has inclined chamfers at both ends on the side away from the middle of the probe body (1).
4. The high-precision static cone penetration test device according to claim 1, characterized in that: The outer wall of the insertion ring (41) is fixedly connected with a positioning protrusion (49), and the inner wall of the probe body (1) is fixedly connected with a positioning groove (410).
5. The high-precision static cone penetration test device according to claim 1, characterized in that: The dust removal assembly (5) includes a dust pusher block (51), the outer wall of which is slidably connected to the inner wall of the probe body (1), the rear surface of which is elastically connected to the inner wall of the probe body (1) by a spring (52), and the rear side of which is provided with a limit assembly (53) together with the interior of the probe body (1).
6. The high-precision static cone penetration test device according to claim 5, characterized in that: The limiting component (53) includes a limiting groove (531), which is formed on the inner wall of the probe body (1). A limiting block (532) is slidably connected to the inner wall of the limiting groove (531). A connecting rod (533) is fixedly connected to the front surface of the limiting block (532), and the front end of the connecting rod (533) is fixedly connected to the rear surface of the dust pushing block (51).
7. The high-precision static cone penetration test device according to claim 5, characterized in that: The length of the dust pusher block (51) is longer than the width of the annular groove (48).
8. The high-precision static cone penetration test device according to claim 6, characterized in that: The length of the connecting rod (533) is longer than the length of the insertion ring (41), and the length of the connecting rod (533) is shorter than the sum of the lengths of the insertion ring (41) and the dust pusher (51).