Hydraulic ram compaction depth of influence data sensing device

Abstract

The application discloses a hydraulic ram compaction influence depth data sensing device and belongs to the field of engineering machinery. The hydraulic ram compaction influence depth data sensing device comprises a primary piston cylinder, a first sliding cavity is arranged in the primary piston cylinder, a secondary piston cylinder is slidably connected in the first sliding cavity, the upper end of the secondary piston cylinder penetrates the primary piston cylinder and extends out of the primary piston cylinder, a second sliding cavity is arranged in the secondary piston cylinder, and an impact assembly is slidably connected in the second sliding cavity. The application can apply a continuous thrust force to the impact assembly, increase the stroke of the impact assembly, increase the soil compaction efficiency and improve the compaction effect. The hydraulic oil is used as a driving medium to replace traditional connecting rod driving members, so that the service life of the transmission components is prolonged due to the impact, and the influence depth detection assembly can effectively control the compaction influence depth.

Description

Technical Field

[0001] This invention belongs to the field of engineering machinery technology, specifically relating to a data sensing device for the depth of hydraulic compaction impact. Background Technology

[0002] Hydraulic compactors can be categorized into free-fall and forced-fall types. Free-fall (single-acting): The hydraulic cylinder lifts the hammer to a set height and then releases it, allowing the hammer to fall freely. Upon landing, the hammer strikes the assembly between the hammer and the compactor plate via the hammer pad, driving the compactor plate to compact the ground. Forced-fall (double-acting): The hydraulic cylinder lifts the hammer to a set height and then rapidly reverses the force, accelerating the hammer's descent under the combined action of gravity and the hydraulic cylinder's thrust. Upon landing, the hammer strikes the assembly between the hammer and the compactor plate via the hammer pad, driving the compactor plate to compact the ground. The degree of compaction and the depth of compaction effect of a hydraulic compactor are key data for determining the bearing capacity of the soil subgrade.

[0003] Prior art with application number 201710302581.8 discloses a hydraulic compaction device and a hydraulic compactor. The hydraulic compaction device includes a housing, a hydraulic cylinder, a hammer, and a tamping plate. The hydraulic cylinder is located inside the housing and is hinged to one end of the housing. The tamping plate is fixedly installed at the other end. The hammer is located between the hydraulic cylinder and the tamping plate. A T-slot is provided on the side of the hammer near the hydraulic cylinder. The T-slot includes a sliding cavity and a limiting cavity that are interconnected. The limiting cavity is located inside the hammer. The hydraulic cylinder has a piston rod, which includes a rod body and a first step and a second step that are fixedly connected to the rod body. Part of the rod body extends into the hammer and is clearance-fitted with the sliding cavity. The sliding cavity is located between the first step and the second step. The hydraulic cylinder is used to drive the hammer to contact or move away from the tamping plate.

[0004] However, this existing technology still has the following shortcomings:

[0005] 1. Because it drives the hammer to move up and down through a transmission rod, the hammer's stroke is short during the impact process, the acceleration effect is not obvious, resulting in a smaller impact force, lower impact efficiency, and poor impact effect.

[0006] 2. The transmission rod is easily damaged by impact force during the impact process, requiring regular maintenance and upkeep, resulting in high operating costs.

[0007] 3. The compaction impact depth of the subgrade cannot be detected in real time during the impact process, and it cannot be guaranteed that the compaction degree and compaction impact depth of the subgrade meet the specifications, which poses a risk of rework. Summary of the Invention

[0008] The present invention provides a hydraulic compaction influence depth data sensing device to solve at least one of the above-mentioned technical problems.

[0009] The technical solution adopted in this invention is as follows:

[0010] A hydraulic compaction depth sensing device includes a primary piston cylinder with a first sliding cavity inside. A secondary piston cylinder is slidably connected within the first sliding cavity. The upper end of the secondary piston cylinder passes through the primary piston cylinder and extends beyond it. A second sliding cavity is provided within the secondary piston cylinder, and an impact component is slidably connected within it. A sealing plate is provided on the outer wall of the secondary piston cylinder, and the sealing plate is slidably connected to the first sliding cavity to form a sealed chamber among the sealing plate, the inner wall of the primary piston cylinder, and the outer wall of the secondary piston cylinder. The upper end of the primary piston cylinder has a first oil inlet and a first oil outlet communicating with the sealed chamber. The upper end of the secondary piston cylinder has a second oil inlet and a second oil outlet communicating with the second sliding cavity. The secondary piston cylinder slides into the primary piston cylinder so that the second oil inlet connects to the sealed chamber. An impact plate is provided at the bottom of the primary piston cylinder, and a depth detection component is provided at the bottom of the impact plate.

[0011] Preferably, the bottom of the first-stage piston cylinder is provided with an annular base, and the center of the annular base is provided with an impact channel that cooperates with the impact assembly. The inner wall of the impact channel is provided with a limiting groove. The impact depth detection assembly includes a connecting plate that is slidably connected to the limiting groove. The bottom of the connecting plate is provided with an insertion rod, which is slidably connected to the impact plate. The insertion rod is provided with a sensor for detecting the impact depth.

[0012] Preferably, the impact assembly includes an impact piston and an impact hammer, the impact hammer being located below the impact piston, an electromagnet being provided at the lower end of the impact piston, and the impact hammer being connected to the electromagnet by magnetic force.

[0013] Preferably, the inner wall of the secondary piston cylinder is provided with a limiting slide rail, and the side wall of the impact piston is provided with a limiting flange that slides with the limiting slide rail.

[0014] Preferably, the upper end of the impact hammer is provided with a magnet plate, and the magnet plate is fixedly connected to the impact hammer through a connecting column. The direction of the magnetic poles of the electromagnet can be changed to make the electromagnet and the magnet plate attract or repel each other.

[0015] Preferably, the annular base is provided with a buffer groove, and several groups of buffer grooves are arranged along the axial direction of the annular base. A buffer pad is slidably connected in the buffer groove, and a second spring is fixedly connected between the buffer pad and the inner wall of the buffer groove. A limit telescopic rod is fixedly connected between the buffer pad and the inner wall of the buffer groove.

[0016] Preferably, a limiting plate is provided at the upper end of the secondary piston cylinder.

[0017] Preferably, the upper end of the first-stage piston cylinder is provided with a receiving groove that cooperates with the limiting plate, and the receiving groove is provided with a plurality of first springs.

[0018] Preferably, the inner wall of the first sliding cavity is provided with a first limiting boss, which is located below the first oil inlet and the first oil outlet, and the inner wall of the second sliding cavity is provided with a second limiting boss, which is located below the second oil inlet and the second oil outlet.

[0019] Preferably, the electromagnet has a buffer plate at its bottom.

[0020] Due to the adoption of the above technical solution, the beneficial effects achieved by this invention are as follows:

[0021] 1. This application utilizes a primary and secondary piston cylinder design to apply continuous thrust to the impact assembly. Combined with the increased stroke of the impact assembly, this increases the velocity of the impact assembly upon contact with the impact plate, thereby increasing the impact force and improving soil compaction efficiency and effect. Furthermore, by using hydraulic oil as the driving medium, it replaces traditional linkage drives and other driving components, fundamentally solving the problem of impact-induced lifespan limitations in transmission components.

[0022] Furthermore, each time the impact assembly strikes the impact plate, the influence depth detection component at the bottom of the impact plate can detect the depth of influence of that impact on the soil compaction and display the detection data on a terminal device, such as a computer or mobile phone. When the influence depth detection component detects that the soil compaction influence depth value meets the specification requirements, the impact plate can be moved to the next compaction point by a loader and a mechanical hydraulic arm. By repeating this operation, the compaction influence depth can be effectively controlled, avoiding rework due to the compaction degree and influence depth of the compacted soil not meeting the specification requirements.

[0023] 2. In a preferred embodiment of the present invention, the impact assembly slides downward into the impact channel and presses the insert rod into the soil layer through the impact connecting plate. The sensor enters the soil layer and can detect the impact depth of the soil layer after each impact through pressure waves. When the impact depth value detected by the sensor meets the specification requirements, the first-stage piston cylinder is moved upward by the loader and the mechanical hydraulic arm to pull the insert rod out of the soil layer. The above operation is repeated to hammer and compact another compaction point and detect the compaction impact depth of the area where the compaction point is located.

[0024] 3. In a preferred embodiment of the present invention, during the rise and fall of the impact piston, the electromagnet is energized and uses magnetic force to attract and fix the impact hammer. Before the impact piston falls to the bottom of the second sliding chamber, for example, when the impact piston falls to a distance of 50-100cm above the bottom of the second sliding chamber, the electromagnet is de-energized, causing the impact hammer to separate from the electromagnet. After this time point, the sliding speed of the impact piston is reduced by decreasing the flow of hydraulic oil, so that the impact piston and impact hammer maintain a certain distance after separation and slowly move towards the bottom of the second sliding chamber. After the impact hammer strikes the impact plate for the first time, there will be a significant rebound phenomenon. Since the impact piston and impact hammer are in a separated state and there is a certain safe distance between them, the impact of the impact hammer rebound on the impact piston is eliminated, thereby ensuring the service life of the impact piston. After the impact hammer rebounds, the impact piston also moves to the bottom of the second sliding chamber, and the electromagnet is energized to contact and attract the upper end face of the impact hammer. The hydraulic drive device discharges the hydraulic oil in the second sliding chamber and the sealed chamber to allow the impact piston, impact hammer, and secondary piston cylinder to slide upward and reset to the initial position.

[0025] 4. In a preferred embodiment of the present invention, the upper end of the impact hammer is provided with a magnet plate, and the magnet plate is fixedly connected to the impact hammer through a connecting column. The direction of the magnetic poles of the electromagnet is changed so that the electromagnet and the magnet plate attract or repel each other.

[0026] As the impact piston falls to a point 50-100cm above the bottom of the second sliding chamber, the electromagnet changes its current direction, causing its poles to flip. After this point, the poles of the electromagnet and the adjacent magnetic plate are identical and repel each other, ensuring that the electromagnet continues to exert a downward force even after separating from the magnetic plate, accelerating the impact hammer's descent. After this point, the flow of hydraulic oil is reduced to decrease the sliding speed of the impact piston, maintaining a certain distance between the impact piston and the impact hammer and allowing it to slowly move towards the bottom of the second sliding chamber. This eliminates the impact of the impact hammer's rebound on the impact piston. Furthermore, the mutual repulsion between the electromagnet and the magnetic plate suppresses the impact hammer's rebound as it approaches, preventing the impact hammer from colliding with the impact piston and thus ensuring its service life. After the impact hammer rebounds, the electromagnet's current direction is changed, causing the electromagnet and the magnetic plate to attract each other. The hydraulic drive then drains the hydraulic oil from the second sliding chamber and the sealed chamber, allowing the impact piston, impact hammer, and secondary piston cylinder to slide upwards and return to their initial positions.

[0027] The electromagnet has a buffer plate at its bottom. The buffer plate can further reduce the impact force of the impact hammer rebounding on the impact piston.

[0028] 5. In a preferred embodiment of the present invention, the limiting slide rail and the limiting flange facilitate the guidance of the impact piston. The lower and upper ends of the limiting slide rail can locate the lowest and highest points of the impact piston's displacement, increasing the accuracy of the impact action. On the other hand, the limiting flange helps to strengthen the structure of the impact piston and increases its service life.

[0029] 6. In a preferred embodiment of the present invention, the buffer groove, buffer pad, and second spring facilitate buffer protection of the sealing plate and reduce the impact force of the sealing plate on the annular base. The storage groove and first spring facilitate buffer protection during the falling process of the secondary piston cylinder.

[0030] 7. In a preferred embodiment of the present invention, the first limiting boss is provided to prevent the sealing plate from blocking the first oil inlet and the first oil outlet; the second limiting boss is provided to prevent the impact piston from blocking the second oil inlet and the second oil outlet. Attached Figure Description

[0031] Figure 1 This is one of the structural schematic diagrams of a specific embodiment of the present invention;

[0032] Figure 2 This is a second structural schematic diagram of a specific embodiment of the present invention;

[0033] Figure 3 This is the third structural schematic diagram of a specific embodiment of the present invention;

[0034] Figure 4 For the present invention Figure 3 Enlarged view of section A in the middle;

[0035] Figure 5 For the present invention Figure 4 Enlarged view of section B;

[0036] Figure 6 This is a schematic diagram of the impact piston structure in a specific embodiment of the present invention;

[0037] Figure 7 A schematic diagram of the impact hammer structure in a specific embodiment of the present invention.

[0038] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention.

[0039] In the attached diagram:

[0040] 10. First-stage piston cylinder; 11. First sliding chamber; 12. First oil inlet; 13. First oil outlet; 14. Receiving groove; 15. First spring; 16. Annular base; 17. Impact channel; 18. First limiting boss; 20. Second-stage piston cylinder; 21. Sealing plate; 22. Second sliding chamber; 23. Second oil inlet; 24. Second oil outlet; 25. Limiting slide rail; 26. Limiting plate; 27. Second limiting boss; 30. Impact piston; 31. Electromagnet; 32. Limiting flange; 33. Buffer plate; 40. Impact hammer; 41. Magnet plate; 42. Connecting column; 50. Buffer groove; 51. Buffer pad; 52. Second spring; 53. Limiting telescopic rod; 60. Limiting slide groove; 70. Connecting plate; 71. Insert rod; 72. Sensor; 80. Impact plate. Detailed Implementation

[0041] To more clearly illustrate the overall concept of the present invention, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0042] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0043] Furthermore, in the description of this invention, it should be understood that the terms "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," "specific example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] Reference Figures 1-7 A hydraulic compaction depth data sensing device includes a primary piston cylinder 10, a first sliding cavity 11 inside the primary piston cylinder 10, a secondary piston cylinder 20 slidably connected inside the first sliding cavity 11, the upper end of the secondary piston cylinder 20 penetrating through the primary piston cylinder 10 and extending beyond the primary piston cylinder 10, a second sliding cavity 22 inside the secondary piston cylinder 20, an impact component slidably connected inside the second sliding cavity 22, and a sealing plate 21 on the outer wall of the secondary piston cylinder 20, the sealing plate 21 being slidably connected to the first sliding cavity 11 to ensure sealing. A sealed chamber is formed between the sealing plate 21, the inner wall of the first-stage piston cylinder 10, and the outer wall of the second-stage piston cylinder 20. The upper end of the first-stage piston cylinder 10 is provided with a first oil inlet 12 and a first oil outlet 13 that connect to the sealed chamber. The upper end of the second-stage piston cylinder 20 is provided with a second oil inlet 23 and a second oil outlet 24 that connect to the second sliding chamber 22. The second-stage piston cylinder 20 slides into the first-stage piston cylinder 10 so that the second oil inlet 23 enters the sealed chamber. The bottom of the first-stage piston cylinder 10 is provided with an impact plate 80, and the bottom of the impact plate 80 is provided with an impact depth detection component.

[0047] Those skilled in the art will understand that a connecting frame is slidably connected to the outer wall of the first-stage piston cylinder 10. The connecting frame is hinged to the mechanical hydraulic arm of the loader and the angle of the connecting frame is controlled by the hydraulic system to adjust the position and angle of the impact plate 80.

[0048] In the initial state, such as Figure 1 As shown, the lower end of the secondary piston cylinder 20 is located in the upper region of the first sliding cavity 11. The first oil inlet 12 is connected to the output end of the external hydraulic drive device. When the hydraulic drive device outputs hydraulic oil into the sealed cavity, the hydraulic oil entering the sealed cavity pushes the sealing plate 21, causing the secondary piston cylinder 20 to slide downwards. At the same time, as the secondary piston cylinder 20 slides downwards, it provides kinetic energy to the impact assembly through thrust. When the sealing plate 21 slides to the bottom of the first sliding cavity 11, the second oil inlet 23 just enters the sealed cavity. Figure 2As shown, the hydraulic oil input into the sealed chamber is fed into the second sliding chamber 22 through the second inlet 23 to continue applying thrust to the impact assembly, such as... Figure 3 As shown, this increases the acceleration of the impact component during its descent, thereby increasing the impact force of the impact component on the impact plate 80 and thus increasing the compaction efficiency of the hydraulic rammer. When the impact component is retrieved, the hydraulic drive device first recovers the hydraulic oil in the secondary piston cylinder 20 through the second drain port 24, causing the impact component to slide upwards along the second sliding cavity 22 to its upper end. Then, it recovers the hydraulic oil in the sealed cavity through the first drain port 13, causing the sealing plate 21 to drive the secondary piston cylinder 20 upwards to its initial position. This completes one impact action. Repeating the above operation to impact the same area multiple times completes the compaction of the soil layer in that area. The design of the primary piston cylinder 10 and the secondary piston cylinder 20 allows for the application of continuous thrust to the impact component. Combined with the increased stroke of the impact component, this increases the speed at which the impact component contacts the impact plate 80, thereby increasing the impact force of the impact component on the impact plate 80, thus increasing the soil compaction efficiency and improving the compaction effect. On the other hand, in the above embodiments, hydraulic oil is used as the driving medium, replacing traditional driving components such as linkage drives, thus fundamentally solving the problem of the service life of transmission components affected by impact.

[0049] Furthermore, each time the impact component strikes the impact plate 80, the influence depth detection component at the bottom of the impact plate 80 can detect the influence depth of the soil compaction caused by that impact and display the detection data on a terminal device, such as a computer or mobile phone. When the influence depth detection component detects that the influence depth of the soil compaction meets the influence depth value required by the specification, the impact plate 80 can be moved to the next compaction point by a loader and a mechanical hydraulic arm. By repeating this operation, the influence depth of compaction can be effectively controlled, avoiding rework due to the compaction degree and influence depth of the compacted soil not meeting the requirements of the specification.

[0050] As a specific embodiment of the above-described implementation method, refer to Figures 1-4 The bottom of the first-stage piston cylinder 10 is provided with an annular base 16. The center of the annular base 16 is provided with an impact channel 17 that cooperates with the impact assembly. The inner wall of the impact channel 17 is provided with a limiting groove 60. The impact depth detection assembly includes a connecting plate 70 that is slidably connected to the limiting groove 60. The bottom of the connecting plate 70 is provided with a rod 71. The rod 71 is slidably connected to the impact plate 80. The rod 71 is provided with a sensor 72 for detecting the impact depth.

[0051] The impact assembly slides downward into the impact channel 17, pressing the insertion rod 71 into the soil layer via the impact connecting plate 70. The sensor 72, inserted into the soil layer, can detect the impact depth of each impact on the soil compaction depth through pressure waves. When the impact depth value detected by the sensor 72 meets the specification requirements, the loader and mechanical hydraulic arm drive the first-stage piston cylinder 10 upward to pull the insertion rod 71 out of the soil layer. This operation is repeated to hammer and compact another compaction point, and the compaction impact depth of the area where that point is located is then detected. It should be noted that the sensor 72's detection of soil compaction degree and impact depth through pressure waves is a mature existing technology and will not be elaborated upon further here. The impact channel 17 facilitates the guidance of the impact assembly, the annular base 16 increases the structural strength of the lower end of the first-stage piston cylinder 10 and enhances its impact resistance, the limiting groove 60 facilitates the limiting and guiding of the connecting plate 70 and prevents the connecting plate 70 from detaching from the impact channel 17, and the lower end of the insertion rod 71 has a spike to facilitate its insertion into the soil layer.

[0052] As a specific implementation of the impact component, refer to Figures 1-7 The impact assembly includes an impact piston 30 and an impact hammer 40. The impact hammer 40 is located below the impact piston 30. An electromagnet 31 is provided at the lower end of the impact piston 30. The impact hammer 40 and the electromagnet 31 are connected by magnetic force.

[0053] During the rise and fall of the impact piston 30, the electromagnet 31 is energized. The electromagnet 31 magnetically attracts and fixes the impact hammer 40. Before the impact piston 30 falls to the bottom of the second sliding chamber 22, for example, when the impact piston 30 falls to a position 50-100cm above the bottom of the second sliding chamber 22, the electromagnet 31 is de-energized, causing the impact hammer 40 to separate from the electromagnet 31. After this point, the sliding speed of the impact piston 30 is reduced by decreasing the flow of hydraulic oil, allowing the impact piston 30 to maintain a certain distance from the impact hammer 40 after separation and slowly move towards the bottom of the second sliding chamber 22. After a single hammer strike to the impact plate 80, a noticeable rebound phenomenon occurs. Since the impact piston 30 and the impact hammer 40 are in a separated state and there is a certain safe distance between them, the impact of the rebound of the impact hammer 40 on the impact piston 30 is eliminated, thereby ensuring the service life of the impact piston 30. After the impact hammer 40 rebounds, the impact piston 30 also moves to the bottom of the second sliding chamber 22, and the electromagnet 31 is energized to contact and attract the upper end face of the impact hammer 40. The hydraulic drive device discharges the hydraulic oil in the second sliding chamber 22 and the sealed chamber so that the impact piston 30, the impact hammer 40, and the secondary piston cylinder 20 slide upward and reset to the initial position.

[0054] As a preferred example of the above-described embodiment, the upper end of the impact hammer 40 is provided with a magnet plate 41, and the magnet plate 41 and the impact hammer 40 are fixedly connected by a connecting column 42. By changing the direction of the magnetic poles of the electromagnet 31, the electromagnet 31 and the magnet plate 41 can attract or repel each other.

[0055] When the impact piston 30 falls to a distance of 50-100cm above the bottom of the second sliding chamber 22, the electromagnet 31 changes the direction of the current to cause the magnetic poles of the electromagnet 31 to flip. After this time point, the magnetic poles of the adjacent surfaces of the electromagnet 31 and the magnet plate 41 are the same and repel each other, so that the electromagnet 31 can still exert a downward force after separating from the magnet plate 41, causing the impact hammer 40 to fall faster. After the aforementioned time point, the sliding speed of the impact piston 30 is reduced by decreasing the flow of hydraulic oil, so that the impact piston 30 and the impact hammer 40 are separated and kept at a certain distance and slowly move towards the bottom of the second sliding chamber 22, thereby eliminating the impact of the impact hammer 40 rebounding on the impact piston 30. Furthermore, since the electromagnet 31 and the magnetic plate 41 repel each other, the rebound of the impact hammer 40 can be suppressed during the process of the impact piston 30 approaching the impact hammer 40, while also preventing the impact hammer 40 from hitting the impact piston 30, thus ensuring the service life of the impact piston 30. After the impact hammer 40 rebounds, the current direction of the electromagnet 31 is changed so that the electromagnet 31 and the magnetic plate 41 attract each other. The hydraulic drive device discharges the hydraulic oil in the second sliding chamber 22 and the sealed chamber so that the impact piston 30, the impact hammer 40, and the secondary piston cylinder 20 slide upwards and reset to the initial position.

[0056] A buffer plate 33 is provided at the bottom of the electromagnet 31. The buffer plate 33 can further reduce the impact force of the impact hammer 40 rebounding on the impact piston 30.

[0057] As a preferred example of the above-described implementation method, refer to Figures 1-6 The inner wall of the secondary piston cylinder 20 is provided with a limiting slide rail 25, and the side wall of the impact piston 30 is provided with a limiting flange 32 that slides with the limiting slide rail 25. The limiting slide rail 25 and the limiting flange 32 facilitate the guidance of the impact piston 30. The lower and upper ends of the limiting slide rail 25 can locate the lowest and highest points of the displacement of the impact piston 30, increasing the accuracy of the impact action. On the other hand, the limiting flange 32 enhances the structural strength of the impact piston 30, increasing its service life.

[0058] As a preferred embodiment of this application, refer to Figure 5The annular base 16 is provided with buffer grooves 50, and several sets of buffer grooves 50 are arranged along the axial direction of the annular base 16. Buffer pads 51 are slidably connected inside the buffer grooves 50. A second spring 52 is fixedly connected between the buffer pads 51 and the inner wall of the buffer grooves 50. A limit telescopic rod 53 is fixedly connected between the buffer pads 51 and the inner wall of the buffer grooves 50. The arrangement of buffer grooves 50, buffer pads 51, and second springs 52 facilitates the buffering protection of the sealing plate 21 and reduces the impact force of the sealing plate 21 on the annular base 16.

[0059] As a preferred example of the secondary piston cylinder 20, refer to Figures 1-3 The secondary piston cylinder 20 has a limiting plate 26 at its upper end. The limiting plate 26 is provided to limit the movement of the secondary piston cylinder 20. Furthermore, the primary piston cylinder 10 has a receiving groove 14 at its upper end that cooperates with the limiting plate 26. The receiving groove 14 is provided with several sets of first springs 15. The receiving groove 14 and the first springs 15 are provided to provide cushioning protection during the falling process of the secondary piston cylinder 20.

[0060] As a preferred embodiment of this application, refer to Figures 1-3 The inner wall of the first sliding cavity 11 is provided with a first limiting boss 18, which is located below the first oil inlet 12 and the first oil outlet 13. The inner wall of the second sliding cavity 22 is provided with a second limiting boss 27, which is located below the second oil inlet 23 and the second oil outlet 24. The first limiting boss 18 is provided to prevent the sealing plate 21 from blocking the first oil inlet 12 and the first oil outlet 13; the second limiting boss 27 is provided to prevent the impact piston 30 from blocking the second oil inlet 23 and the second oil outlet 24.

[0061] For any parts not mentioned in this invention, existing technologies can be used or referenced.

[0062] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0063] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A hydraulic compaction influence depth data sensing device, characterized in that, The system includes a primary piston cylinder (10), inside which is provided a first sliding cavity (11). A secondary piston cylinder (20) is slidably connected within the first sliding cavity (11). The upper end of the secondary piston cylinder (20) passes through the primary piston cylinder (10) and extends beyond it. A second sliding cavity (22) is provided within the secondary piston cylinder (20). An impact assembly is slidably connected within the second sliding cavity (22). A sealing plate (21) is provided on the outer wall of the secondary piston cylinder (20). The sealing plate (21) is slidably connected to the first sliding cavity (11) to ensure that the sealing plate (21) and the first sliding cavity (11) are sealed and slidably connected. A sealed chamber is formed between the inner wall of the first-stage piston cylinder (10) and the outer wall of the second-stage piston cylinder (20). The upper end of the first-stage piston cylinder (10) is provided with a first oil inlet (12) and a first oil outlet (13) that connect to the sealed chamber. The upper end of the second-stage piston cylinder (20) is provided with a second oil inlet (23) and a second oil outlet (24) that connect to the second sliding chamber (22). The second-stage piston cylinder (20) slides into the first-stage piston cylinder (10) so that the second oil inlet (23) enters the sealed chamber. The bottom of the first-stage piston cylinder (10) is provided with an impact plate (80). The bottom of the impact plate (80) is provided with an influence depth detection component. The first-stage piston cylinder (10) is provided with an annular base (16) at the bottom. An impact channel (17) that cooperates with the impact assembly is provided at the center of the annular base (16). A limiting groove (60) is provided on the inner wall of the impact channel (17). The impact depth detection assembly includes a connecting plate (70) that is slidably connected to the limiting groove (60). A rod (71) is provided at the bottom of the connecting plate (70). The rod (71) is slidably connected to the impact plate (80). A sensor (72) for detecting the impact depth is provided on the rod (71). The impact assembly includes an impact piston (30) and an impact hammer (40). The impact hammer (40) is located below the impact piston (30). An electromagnet (31) is provided at the lower end of the impact piston (30). The impact hammer (40) and the electromagnet (31) are connected by magnetic force.

2. The hydraulic compaction influence depth data sensing device according to claim 1, characterized in that, The inner wall of the secondary piston cylinder (20) is provided with a limiting slide rail (25), and the side wall of the impact piston (30) is provided with a limiting flange (32) that slides with the limiting slide rail (25).

3. The hydraulic compaction influence depth data sensing device according to claim 1, characterized in that, The upper end of the impact hammer (40) is provided with a magnet plate (41). The magnet plate (41) and the impact hammer (40) are fixedly connected by a connecting column (42). By changing the direction of the magnetic pole of the electromagnet (31), the electromagnet (31) and the magnet plate (41) can attract or repel each other.

4. The hydraulic compaction influence depth data sensing device according to claim 1, characterized in that, The annular base (16) is provided with a buffer groove (50). Several sets of buffer grooves (50) are arranged along the axial direction of the annular base (16). A buffer pad (51) is slidably connected inside the buffer groove (50). A second spring (52) is fixedly connected between the buffer pad (51) and the inner wall of the buffer groove (50). A limit telescopic rod (53) is fixedly connected between the buffer pad (51) and the inner wall of the buffer groove (50).

5. A hydraulic compaction influence depth data sensing device according to any one of claims 1-4, characterized in that, The upper end of the secondary piston cylinder (20) is provided with a limiting plate (26).

6. The hydraulic compaction influence depth data sensing device according to claim 5, characterized in that, The upper end of the first-stage piston cylinder (10) is provided with a storage groove (14) that cooperates with the limiting plate (26), and a number of first springs (15) are provided in the storage groove (14).

7. The hydraulic compaction influence depth data sensing device according to claim 1, characterized in that, The inner wall of the first sliding cavity (11) is provided with a first limiting boss (18), which is located below the first oil inlet (12) and the first oil outlet (13). The inner wall of the second sliding cavity (22) is provided with a second limiting boss (27), which is located below the second oil inlet (23) and the second oil outlet (24).

8. The hydraulic compaction influence depth data sensing device according to claim 1, characterized in that, The electromagnet (31) has a buffer plate (33) at its bottom.

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