Automatic connecting and separating system of rammer of dynamic compactor

Abstract

The present application relates to a kind of automatic connection and separation systems of rammer of dynamic compactor, including suspension assembly and rammer, suspension assembly is composed of suspension end, crossbeam, connecting cable and hammer, and two hammers are symmetrically hung in the crossbeam two ends by connecting cable;Rammer top is symmetrically provided with matching interval connecting hole, connecting hole is sequentially provided with first guide area and circumferential positioning area, and is equipped with guide groove, circumferential guide structure and the hammer of positioning connecting block, while being equipped with swing type connection lock block and lock catch structure to realize connection and separation.The present application significantly improves overall torsional stiffness and transverse restraint capacity by double-point suspension structure, effectively suppresses cable rebounding and swinging, reduces the wear of key components;Relying on multistage guide and circumferential self-adaptive alignment structure, it can realize the automatic precise coaxial docking of hammer and rammer, without manual hooking, simplifying operation process, reducing safety hazards, effectively improving the efficiency of dynamic compaction operation and the stability of equipment operation, adapting to the demand of automatic dynamic compaction construction conditions.

Description

Technical Field

[0001] This invention relates to the field of dynamic compaction construction, specifically to an automatic connection and separation system for the hammer of a dynamic compaction machine. Background Technology

[0002] Cable-lift dynamic compaction machines are currently the mainstream equipment for foundation compaction operations. They use a winch mechanism to pull a steel cable, lifting the hammer to a predetermined height. The hammer then gains gravitational potential energy and releases it freely, using impact energy to compact the foundation soil. The connection and separation system, as a core functional component of the cable-lift dynamic compaction machine, directly determines the efficiency, safety, and operational stability of the hammer operation.

[0003] Currently, cable-lift dynamic compaction machines generally employ a mechanical quick-release hook connection and separation system, enabling the release of the hammer after it has been raised to a predetermined height. However, the connection between the hammer and the hanging hammer still requires manual operation. The standard operating procedure is as follows: Before each compaction cycle begins, the construction personnel must enter the hammer operating area, manually align the hook with the lifting structure at the top of the hammer, and complete the hooking. After confirming a secure connection, the winch mechanism pulls the quick-release hook and the hammer upwards synchronously via the cable. Once the hammer reaches the preset operating height, the manual operation triggers the quick-release hook to release, allowing the hammer to fall freely and compact the foundation. After the hammer lands, the cable pulls the quick-release hook back down, and the construction personnel re-enter the operating area to repeat the hooking operation, beginning the next operating cycle.

[0004] Under this operating mode, the existing connection and separation system that relies on a quick unhooker has many technical problems that urgently need to be solved.

[0005] First, the existing connection and separation system is designed for suspension with a single connection point on the steel cable. This single connection point lacks torsional stiffness and lateral restraint. When the hammer is suddenly released from the predetermined height, the tension in the steel cable disappears instantly, resulting in violent elastic rebound and lateral swaying. This causes the hammer and the connection and separation system to swing significantly. This continuous impact and swaying accelerates the wear and fatigue damage of critical components such as the steel cable, pulley system, and connecting pins, significantly shortening the equipment's lifespan and increasing maintenance costs. Furthermore, the swaying can lead to unexpected situations such as cable entanglement, further affecting the continuity and safety of construction.

[0006] More importantly, the inherent characteristics of single-connection-point cable suspension mean that the quick-release device lacks stable attitude constraints in space. During lifting, release, and rebound, the quick-release device will exhibit irregular circumferential rotation and lateral displacement. After each impact, the relative position and attitude of the quick-release device and the hammer suspension structure cannot remain consistent, making it impossible to establish a stable automatic docking benchmark. This directly results in the existing connection and separation system lacking automatic docking capability, relying entirely on manual hooking operations. This not only significantly increases the labor intensity of construction workers and limits further improvements in work efficiency but also poses extremely high safety risks. Manual hooking operations can compensate for random attitude deviations of the hammer through visual observation and manual adjustment. This has led the industry to continue using this inherently flawed connection and separation system structure for a long time, making it difficult to break through towards fully automated operations.

[0007] The purpose of this invention is to design an automatic connection and separation system for the hammer of a dynamic compaction machine to address the problems existing in the prior art. Summary of the Invention

[0008] In view of the problems existing in the prior art, the present invention provides an automatic connection and separation system for the hammer of a dynamic compaction machine, which can effectively solve at least one of the problems existing in the prior art.

[0009] The technical solution of this invention is: Including the suspension assembly and the ram; The suspension assembly includes, from top to bottom, a suspension end, a crossbeam, a connecting cable, and a hanging hammer in the shape of an inverted frustum. The top center of the crossbeam is connected to the suspension end and is used to connect with the steel cable of the dynamic compaction machine to maintain a balanced posture. The tops of the two hanging hammers are symmetrically suspended from the lower part of both ends of the crossbeam along its length by independent connecting cables to form a double-point suspension structure. The top of the ram is symmetrically provided with two connecting holes, and the center distance between the two connecting holes is equal to the center distance between the two hanging hammers; The connecting hole includes a first guide area and a circumferential positioning area from top to bottom. The first guide area is a frustum-shaped flared mouth with an upper diameter larger than a lower diameter. The shape of the circumferential positioning area matches the hanging hammer and its size is slightly larger than the hanging hammer. The upper end of the circumferential positioning area is connected to the lower opening of the first guide area. The circumferential positioning area is provided with at least two guide grooves that are evenly distributed around its central axis and extend along the generatrix of the circumferential positioning area. The side wall of the hammer is provided with the same number of positioning connecting blocks as the guide grooves and that can slide and cooperate with each other. The circumferential positioning area is rotatably connected to each guide groove with a swing-type connecting lock block that cooperates with the positioning connecting block. The hammer is provided with a locking structure that cooperates with the connecting lock block. The connection and separation of the hammer and the tamping hammer are realized through the connection state of the connecting lock block and the locking structure. The inner wall of the connecting hole is provided with a circumferential guide structure near the top and symmetrically located on both sides of each guide groove. The circumferential guide structure is used to guide the positioning connecting block at the corresponding position into the middle guide groove.

[0010] As a further improvement, each of the guide grooves has an inner wall with a mounting cavity. The connecting lock block is L-shaped and includes a shorter trigger section at the lower end, a longer latching section at the upper end, and a connecting section between the trigger section and the latching section. The connecting section is rotatably connected to the mounting cavity via a swing shaft, and the position of the shaft allows the trigger section to extend into the guide groove in its natural state. The side wall of the hanging hammer is recessed inward on the upper side of the positioning connecting block to form a locking groove. The top surface of the locking groove is provided with a locking rod that can extend and retract along the axial direction of the hanging hammer. The locking rod is relatively fixed in its initial downward extension position by a spring reset mechanism and has an extension and retraction margin for upward elastic compression. The bottom end of the locking rod is provided with an inclined arc-shaped guide surface on the side facing the opening of the locking groove. The guide surface is inclined from top to bottom into the locking groove, so that the thickness of the bottom end of the locking rod gradually decreases towards its bottom. The locking section has a locking shaft parallel to its rotation axis at one end away from the connecting section. The rotation path of the locking shaft intersects with the guide surface in its initial position. When the hanging hammer is inserted into the connecting hole, the positioning connecting block pushes the trigger section downward to drive the connecting section to rotate synchronously, so that the locking shaft slides into contact with the guide surface on its rotation path to push the locking rod upward. Thus, after passing the locking rod, the locking rod is moved down and reset to form a locking structure.

[0011] As a further improvement, the bottom surface of the latch groove is provided with a locking hole coaxial with the locking rod. The initial position of the locking rod is located above the locking hole. The latch structure also includes an electromagnet, which is a double-stroke electromagnet driven by two sets of coils and two sets of armatures respectively. The locking rod is connected to the driving end of the electromagnet to achieve double extension stroke. The spring reset mechanism is provided on the electromagnet, and the electromagnet is located inside the hanging hammer. The initial position of the locking rod is that the electromagnet extends during its first extension stroke and retracts during its second extension stroke; The unlocking position of the locking rod is when the electromagnet retracts during its first and second extension strokes, causing the locking shaft to lose its locking rod limit and thus unlocking the connection between the locking block and the latch structure, thereby separating the ram and the hanging hammer. The locking position of the locking rod is when the electromagnet extends during its first and second strokes, so that the end of the locking rod is inserted into the locking hole.

[0012] As a further improvement, the inner side of the locking rod away from the opening of the locking groove is provided with a flat contact plane, and the locking shaft is provided with a mating plane that mates with the contact plane to form a surface contact.

[0013] As a further improvement, the opening of the locking hole is provided with a frustum-shaped second guide area similar in shape to the first guide area. A flat first support surface is formed on the side of the locking hole near the opening of the latch groove. The first support surface is perpendicular to the radial direction of the locking hole. A second support surface is formed around the locking rod to cooperate with the first support surface to form a planar contact.

[0014] As a further improvement, when the locking shaft enters the locking position of the locking rod, the side of the trigger section away from the hanging hammer forms an inclined third support surface, and the inner sidewall of the mounting cavity forms a fourth support surface that cooperates with the third support surface to form a surface contact. The fourth support surface is inclined, and its higher side is inclined towards the direction close to the central axis of the connecting hole where it is located.

[0015] As a further improvement, a reset torsion spring is coaxially sleeved at the end of the swing shaft. The two ends of the reset torsion spring are respectively connected to the swing shaft and the inner wall of the mounting cavity, in order to maintain the tendency of the locking section to swing toward the top of the mounting cavity. Each of the connecting holes has three guide grooves that are evenly distributed around the circumference of the connecting hole, and each of the hanging hammers has three corresponding connecting lock blocks that are evenly distributed around the circumference of the hanging hammer.

[0016] As a further improvement, an infrared reflection module is provided at the lower middle part of the crossbeam, and an infrared reflective film is provided at the upper middle part of the hammer to cooperate with the infrared reflection module. The infrared reflection module is an integrated infrared detection module with an infrared transmitter and an infrared receiver. When the hammer and the hammer are aligned coaxially, the infrared reflective film is used to reflect the infrared signal emitted by the infrared transmitter to the infrared receiver.

[0017] As a further improvement, a control module is also included, which is electrically connected to the infrared reflection module and the electromagnet. A proximity switch is provided in the locking position of the locking shaft in the locking slot, and the locking shaft can be sensed and cooperated with the proximity switch.

[0018] As a further improvement, the suspension end includes, from top to bottom, a connecting sleeve, a top flange, and a bottom flange. The connecting sleeve is used to connect with the steel cable of the dynamic compaction machine to achieve lifting. The top flange is fixed to the bottom of the connecting sleeve. The bottom flange is coaxially rotatably connected to the lower end of the top flange via a connecting shaft in the middle. The bottom flange is fixed to the middle of the upper end of the crossbeam. Wherein: An angle limiting structure is provided between the top flange and the bottom flange. The angle limiting structure includes a fan-shaped limiting groove provided on one of the top flange or the bottom flange and a limiting part provided on the other of the top flange or the bottom flange. The fan-shaped limiting groove is coaxially distributed with the connecting shaft, and the limiting part extends into the fan-shaped limiting groove to limit its rotation range.

[0019] Therefore, the present invention provides the following effects and / or advantages: The existing connection and separation systems of cable-lifted dynamic compaction machines generally adopt a mechanical quick-release hook structure with a single connection point suspension. This has two major technical bottlenecks: First, the single connection point lacks torsional stiffness and lateral restraint. When the hammer is released, the cable will experience violent elastic rebound and lateral swing, accelerating the wear and fatigue damage of key components such as the cable, pulley system, and connecting pin, and may also cause safety accidents such as cable entanglement. Second, the single connection point results in the release hook having no stable posture restraint in space. After each impact, the relative position and posture of the release hook and the hammer suspension structure change randomly, making it impossible to form a stable automatic docking benchmark. Construction personnel must enter the dangerous work area to manually complete the hooking operation, which is not only labor-intensive and inefficient, but also poses a very high risk to personal safety, seriously restricting the development of dynamic compaction operations towards full automation.

[0020] To address this issue, this invention employs a dual-point suspension and multi-stage guided automatic docking architecture. Two independently suspended hammers are symmetrically arranged via a crossbeam, forming a dual-point connection structure corresponding to the two connection holes at the top of the hammers. The dual-point suspension structure itself possesses excellent torsional stiffness and lateral restraint, effectively suppressing the elastic rebound and lateral swing of the steel cable after the hammers are released, significantly reducing impact wear on key components, extending equipment lifespan, and fundamentally solving the problem of unstable posture at a single connection point, providing a stable spatial reference for automatic docking. During docking, the frustum-shaped first guide zone above the connection hole provides a wide-range coarse guide for the hammers. The circumferential guide structure at the top of the connection hole guides the offset positioning connecting block into the corresponding guide groove. The guide groove and the positioning connecting block on the side wall of the hammer slide together to achieve precise circumferential positioning. Simultaneously, the two hammers can drive the crossbeam to automatically correct the angle, ensuring coaxial alignment between the hammers and the connection hole, achieving precise alignment without manual intervention.

[0021] Based on this, the present invention designs a purely mechanically triggered, non-powered automatic locking structure and an electrically controlled automatic unlocking structure. When the hammer is inserted into the connecting hole under its own weight, the positioning connecting block pushes the trigger section of the connecting lock block as the hammer moves downward, causing the connecting lock block to rotate around the swing axis. This causes the locking shaft at the end of the locking section to slide along the arc-shaped guide surface at the bottom of the locking rod and push the locking rod upward. When the locking shaft passes the bottom of the locking rod, the locking rod automatically moves downward and resets under the action of the spring reset mechanism, forming a stop on the locking shaft, thus realizing the non-powered automatic locking connection between the hammer and the ram. When unlocking, it is only necessary to drive the electromagnet to move through the electrical control signal, so that the locking rod retracts upward and releases the limit on the locking shaft, thereby realizing the automatic separation and release of the ram. No manual operation of any mechanical parts is required throughout the process.

[0022] This invention employs a dual-stroke electromagnet to drive the locking rod. It can not only achieve automatic unlocking through the retraction of the first stroke, but also insert the end of the locking rod into the locking hole at the bottom of the locking groove through the extension of the second stroke, forming a double locking structure. The locking hole can provide radial support for the locking rod, greatly improving the shear resistance of the locking rod and preventing bending deformation of the locking rod under heavy load conditions of lifting the ram, thus significantly enhancing the load-bearing capacity and long-term reliability of the connection structure.

[0023] The flat contact surface on the inner side of the locking bar forms a surface contact fit with the mating surface on the locking shaft, dispersing the concentrated stress of traditional point contact into uniform stress of surface contact. This effectively reduces the wear rate of the contact area between the locking shaft and the locking bar, while increasing the contact area, improving the stability and impact resistance of the connection, and extending the service life of the core locking components.

[0024] The frustum-shaped second guide zone at the opening of the locking hole can precisely guide the insertion of the locking rod, avoiding the problem that the locking rod cannot be smoothly inserted into the locking hole due to slight coaxiality deviation between the hammer and the connecting hole, ensuring the reliable completion of the double locking action and eliminating the hidden danger of locking failure.

[0025] When the connecting lock block is in the locked state, the third support surface on the outer side of the trigger section and the fourth support surface on the inner side wall of the mounting cavity form an inclined surface contact support. This support surface can directly transfer the gravity load of the ramming hammer to the side wall structure of the connecting hole while the connecting lock block is connected, forming an upward inclined support reaction force, which greatly reduces the shear load borne by the locking rod, further improving the load-bearing strength and impact resistance of the overall connection structure, enabling the system to adapt to the operation requirements of large-tonnage ramming hammers.

[0026] The reset torsion spring at the end of the swing shaft can keep the locking section swinging towards the top of the mounting cavity when the connecting lock block is not triggered, so that the trigger section is always stably extended into the guide groove. This ensures that the positioning connecting block can accurately push the trigger section when the hammer enters the connecting hole, providing a stable prerequisite for the automatic locking action and avoiding locking failure caused by abnormal posture of the connecting lock block.

[0027] This invention employs an active emission and passive reflection infrared positioning method. An infrared reflection module with an infrared transmitter and receiver is placed at the lower end of the crossbeam, while a passive infrared reflective film is placed only at the upper end of the hammer. The passive reflective film requires no power supply and has strong impact resistance, completely avoiding damage to electronic components caused by the violent impact when the hammer hits the ground. At the same time, it can achieve rough pre-positioning within a short distance between the hanging hammer and the hammer, guiding the hoisting mechanism of the dynamic compaction machine to adjust the falling position of the hanging hammer, further improving the success rate and efficiency of automatic docking.

[0028] The proximity switch installed in the locking slot can detect the position of the locking shaft in real time. When the locking shaft enters the locking position, the proximity switch sends a signal to the control module, which can then drive the electromagnet to perform the second stroke extension action, inserting the locking rod into the locking hole to complete the double locking. This achieves closed-loop control of the locking action, ensuring the accuracy of the locking timing, avoiding malfunctions, and improving the automation level and operational safety of the system.

[0029] An angle limiting structure between the suspension end and the crossbeam provides a certain range of circumferential swing adjustment space for the crossbeam. During the guiding process of the hanging hammer entering the connecting hole, the two hanging hammers are guided by the side wall of the connecting hole, which can drive the crossbeam to automatically correct its angle. At the same time, the angle limiting structure can limit the excessive rotation of the crossbeam, prevent the steel cable from twisting and knotting, and ensure the smoothness of the automatic docking process and the stability of the system operation.

[0030] In summary, this invention addresses the core issues of instability and large impact sway in traditional single-connection-point systems through a dual-point suspension architecture. Relying on a multi-stage guiding and purely mechanically triggered, non-powered automatic locking structure, it achieves fully automatic docking of the tamping hammer and the hanging hammer. Combined with an electrically controlled dual-stroke electromagnet, it enables automatic separation and release of the tamping hammer. Simultaneously, through surface contact support, double locking, and passive infrared positioning, it comprehensively enhances the load-bearing capacity, reliability, and durability of the connection structure. This invention completely eliminates the reliance on manual hooks in dynamic compaction operations, significantly reducing the labor intensity and safety risks for construction workers, and substantially improving the efficiency and continuity of dynamic compaction operations, laying a technological foundation for the automation of dynamic compaction construction.

[0031] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0032] It should be understood that the above summary and the following detailed description of the invention are exemplary and explanatory, and are intended to provide further explanation of the invention as claimed. Attached Figure Description

[0033] Figure 1 This is a schematic diagram illustrating the usage state of the present invention.

[0034] Figure 2 This is a schematic diagram of the overall structure of the present invention.

[0035] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0036] Figure 4 This is a cross-sectional structural diagram of the present invention.

[0037] Figure 5 for Figure 4 A magnified schematic diagram of a portion of region A in the middle.

[0038] Figure 6 This is a schematic diagram of the three-dimensional and partially exploded structure of the present invention.

[0039] Figure 7 This is a three-dimensional structural diagram highlighting the suspension assembly in this invention.

[0040] Figure 8 This is a partial cross-sectional view of the structure highlighting the hanging hammer in this invention.

[0041] Figure 9 This is a partial cross-sectional view of the connection between the hanging hammer and the tamping hammer in this invention.

[0042] Figure 10 This is a partial structural diagram highlighting the locking rod and locking shaft in this invention.

[0043] Figure 11 This is a schematic diagram showing the changes in the working state of the locking structure in this invention.

[0044] Figure 12 This is a partial cross-sectional view and a three-dimensional structural schematic diagram highlighting the arc-shaped guide groove in this invention.

[0045] Figure 13 This is a three-dimensional structural diagram of the connecting lock block in this invention.

[0046] Figure 14 This is a partial cross-sectional view of the angle limiting structure in this invention.

[0047] Figure 15 This is a block diagram illustrating the connection principle between the control module and its various components in this invention.

[0048] In the picture: 100. Suspension assembly; 110. Crossbeam; 120. Connecting cable; 130. Hanging hammer; 131. Positioning connecting block; 140. Suspension end; 141. Connecting sleeve; 142. Top flange; 143. Bottom flange; 144. Connecting shaft; 145. Sector-shaped limiting groove; 146. Limiting part; 200. Hammer; 210. Connecting hole; 211. First guide area; 212. Circumferential positioning area; 213. Guide groove; 214. Arc-shaped guide groove; 215. Mounting cavity; 216. Fourth support surface; 217. Fifth support surface; 220. Vent hole; 300. Connecting lock block; 310. Trigger section; 311. Third support Surface; 320, Locking section; 330, Connecting section; 340, Swinging shaft; 360, Locking shaft; 361, Mating plane; 370, Connecting arm; 400, Locking structure; 410, Locking rod; 411, Arc-shaped guide surface; 412, Contact plane; 420, Spring return mechanism; 421, Return spring; 422, Spring seat; 430, Electromagnet; 440, Locking groove; 450, Locking hole; 460, Second guide area; 470, First support surface; 480, Second support surface; 500, Infrared reflection module; 600, Infrared reflective film; 700, Proximity switch; 800, Control module; 810, Power supply module. Detailed Implementation

[0049] To facilitate understanding by those skilled in the art, the structure of the present invention will now be described in further detail with reference to the accompanying drawings: refer to Figure 1-15 The present invention discloses an automatic connection and separation system for a dynamic compaction machine hammer, which mainly includes two parts: a suspension assembly 100 and a hammer 200 used in conjunction with the suspension assembly 100.

[0050] The suspension assembly 100, from top to bottom, includes a suspension end 140, a crossbeam 110, a connecting cable 120, and two hanging hammers 130 in the shape of an inverted frustum. The upper end of the suspension end 140 is used to connect to the main winch cable a of the dynamic compaction machine, realizing the lifting and lowering movement of the entire suspension assembly 100; the lower end of the suspension end 140 is fixedly connected to the middle position of the top of the crossbeam 110, so that the crossbeam 110 always maintains a horizontally balanced posture in its natural suspension state. The tops of the two hanging hammers 130 are symmetrically suspended from the lower part of both ends of the crossbeam 110 along its length by independent connecting cables 120 of equal length, thus forming a stable two-point suspension structure.

[0051] The tamping hammer 200 is cylindrical in shape, with four vent holes 220 evenly distributed around its central axis. All four vent holes 220 penetrate the tamping hammer 200 along its axial direction to achieve venting during the compaction process.

[0052] Two connecting holes 210 are symmetrically opened on the top of the tamping hammer 200. The center distance between the two connecting holes 210 is exactly equal to the center distance between the two hanging hammers 130, ensuring that the two hanging hammers 130 suspended at two points can be inserted into the two connecting holes 210 at the same time.

[0053] Each connecting hole 210 is coaxially provided with a first guide area 211 and a circumferential positioning area 212 from top to bottom. The first guide area 211 is a frustum-shaped flared mouth with an upper diameter larger than a lower diameter, and its cone angle is set to 30°-45°. It can provide coarse guidance for the hanging hammer 130, which may have positional deviations during the fall, within a certain range, guiding the hanging hammer 130 to gradually approach the central axis of the connecting hole 210. Due to the double-point suspension structure formed by the two hanging hammers 130, the circumferential swing between the tamping hammer 200 and the hanging hammer 130 will be within a very small range. The first guide area 211 can guide the hanging hammer 130 within this range, allowing it to fall smoothly into the circumferential positioning area 212.

[0054] The circumferential positioning area 212 is also shaped like an inverted frustum to match the inverted frustum of the hanging hammer 130, and its size is slightly larger than that of the hanging hammer 130 to facilitate connection with the hanging hammer 130. The upper end of the circumferential positioning area 212 is smoothly connected to the lower opening of the first guide area 211. When the hanging hammer 130 enters the circumferential positioning area 212, the hanging hammer 130 can be smoothly connected to the connecting hole 210.

[0055] Three guide grooves 213 are evenly distributed around the central axis on the inner sidewall of the circumferential positioning area 212. Each guide groove 213 extends along the generatrix of the circumferential positioning area 212, with its upper end extending to the lower part of the first guide area 211 and its lower end extending to the bottom of the circumferential positioning area 212. Three positioning connecting blocks 131 are evenly fixed around the sidewall of the hammer 130, corresponding one-to-one with the guide grooves 213. The positioning connecting blocks 131 are located at the lower ends of the sidewall of the hammer 130 and can slide with the guide grooves 213 to achieve precise circumferential positioning between the hammer 130 and the connecting hole 210.

[0056] Near the top of the inner wall of the connecting hole 210, and symmetrically arranged on both sides of each guide groove 213, are circumferential guide structures.

[0057] The circumferential guiding structure consists of arc-shaped guide grooves 214 that are symmetrically distributed on both sides of the guide groove 213 and tilt downward toward the middle position of the guide groove 213. In this embodiment, the arc-shaped guide grooves 214 are provided in two levels, and the depth of each level of arc-shaped guide grooves 214 is different. The arc-shaped guide groove 214 closest to the side wall of the circumferential positioning area 212 has the lowest depth and the largest extension distance toward both sides of the guide groove 213. The depth of the arc-shaped guide groove 214 located on the inner side is between the depth of the guide groove 213 and the depth of the outer arc-shaped guide groove 214, and its extension distance toward both sides of the guide groove 213 is smaller than that of the outer arc-shaped guide groove 214. Thus, by using the two levels of arc-shaped guide grooves 214, the positioning connecting block 131 entering from different positions can be guided, so that no matter where it enters from within the coverage area of ​​the two levels of arc-shaped guide grooves 214, it can be smoothly guided into the guide groove 213 located in the middle position.

[0058] When the hammer 130 has a circumferential angular deviation, the offset positioning connecting block 131 will first contact the arc-shaped inclined surface of the arc-shaped guide groove 214. Under the action of the hammer 130's own weight, the positioning connecting block 131 will slide along the inclined surface and be guided into the middle guide groove 213, thereby automatically completing the circumferential angle correction. At the same time, since the two hammers 130 are suspended from both ends of the crossbeam 110 by independent connecting cables 120, during the guiding correction process, the guiding reaction force of the two hammers 130 on the side wall of the connecting hole 210 will drive the entire crossbeam 110 to automatically perform angle fine adjustment, ensuring that the two hammers 130 can simultaneously achieve coaxial alignment with the corresponding connecting hole 210. After the tamping hammer 200 is lifted, the forces on both will guide the tamping hammer 200 to automatically rotate and straighten, returning to the correct initial posture.

[0059] The circumferential positioning area 212 is located on the inner wall of each guide groove 213, and each cavity 215 is provided with an installation cavity 215. A swing-type connecting lock block 300 that cooperates with the positioning connecting block 131 is rotatably connected inside the installation cavity 215. The hammer 130 is provided with a locking structure 400 that cooperates with the connecting lock block 300. By switching the connection state between the connecting lock block 300 and the locking structure 400, the automatic connection and separation between the hammer 130 and the tamping hammer 200 can be realized.

[0060] The connecting locking block 300 is L-shaped, including a shorter trigger section 310 at the lower end, a longer latching section 320 at the upper end, and a connecting section 330 between the trigger section 310 and the latching section 320. The connecting section 330 is rotatably connected between the left and right inner walls of the mounting cavity 215 via a swing shaft 340 (not shown in the figure), the axis of which is perpendicular to the central axis of the connecting hole 210. The mounting position of the swing shaft 340 is optimized so that, in its natural state, the trigger section 310 can extend into the interior space of the guide groove 213, while the latching section 320 swings towards the inner top of the mounting cavity 215.

[0061] A return torsion spring (not shown in the figure) is coaxially sleeved at the end of the swing shaft 340. One end of the return torsion spring is fixed to the swing shaft 340, and the other end is fixed to the inner wall of the mounting cavity 215. The return torsion spring always applies an elastic torque to the connecting lock block 300, causing the locking segment 320 to swing toward the top of the mounting cavity 215. This ensures that when the hammer 130 has not entered the connecting hole 210, the trigger segment 310 can be stably maintained in the position of extending into the guide groove 213, providing a reliable precondition for subsequent automatic locking actions.

[0062] On the side wall of the hanging hammer 130, and above each positioning connecting block 131, there is an inwardly recessed locking groove 440.

[0063] The bottom surface of the locking groove 440 is flush with the upper surface of the positioning connecting block 131. A telescopic hole is provided through the top surface of the locking groove 440. A columnar locking rod 410 that can slide and extend up and down along the axial direction of the hanging hammer 130 is slidably arranged in the telescopic hole. The locking rod 410 is relatively fixed in its initial downward extension position by a spring reset mechanism 420 and has a telescopic allowance for upward elastic compression. An inclined arc-shaped guide surface 411 is machined on the side of the bottom end of the locking rod 410 facing the opening of the locking groove 440. The guide surface is inclined from top to bottom into the locking groove 440, so that the thickness of the bottom end of the locking rod 410 gradually decreases towards its bottom, forming a wedge-shaped guide structure that facilitates the sliding of the locking shaft 360.

[0064] The locking segment 320 of the connecting lock block 300 extends symmetrically from the end away from the connecting segment 330 to form two connecting arms 370. A locking shaft 360 parallel to its rotation axis is fixedly installed between the ends of the two connecting arms 370. The rotation path of the locking shaft 360 intersects the arc-shaped guide surface 411 of the lock rod 410 in its initial position. When the hammer 130 is inserted into the connecting hole 210 under its own weight, the positioning connecting block 131 moves down synchronously with the hammer 130. When the bottom surface of the positioning connecting block 131 contacts the trigger segment 310 extending into the guide groove 213, it pushes the trigger segment 310 downward, causing the entire connecting lock block 300 to rotate around the swing axis 340, causing the locking segment 320 to swing towards the locking groove 440. During this process, the locking shaft 360 first contacts the arc-shaped guide surface 411 at the bottom of the locking rod 410 and slides along the guide surface, while simultaneously pushing the locking rod 410 upward to retract its compression spring return mechanism 420 upward. After the locking shaft 360 has completely passed the bottom of the locking rod 410, the locking rod 410 automatically moves downward to reset under the elastic force of the spring return mechanism 420. The bottom surface of the locking rod 410 forms a downward stop on the locking shaft 360, thereby achieving a powerless automatic locking connection between the hanging hammer 130 and the tamping hammer 200.

[0065] To enhance the smoothness of the engagement between the positioning connecting block 131 and the connecting locking block 300, when the latching segment 320 is inserted into the latching groove 440 and the locking shaft 360 is engaged in the limiting area of ​​the locking rod 410, the bottom of the latching segment 320 is flush with the latching groove 440 and the upper surface of the positioning connecting block 131. Furthermore, the inner side of the connecting segment 330 of the connecting locking block 300 has an arc-shaped transition, and the outer edge of the positioning connecting block 131 forms another arc-shaped transition surface that matches the arc-shaped transition of the connecting segment 330, thereby enhancing the smoothness of their engagement. In addition, the bottom of the positioning connecting block 131 forms an arc-shaped guide surface 411, which provides guidance during the contact engagement between the positioning connecting block 131 and the trigger segment 310 of the connecting locking block 300, further enhancing the smoothness of their downward stacking process.

[0066] The bottom surface of the locking groove 440 has a locking hole 450 coaxial with the locking rod 410, and the initial position of the locking rod 410 is above the locking hole 450. The locking structure 400 also includes a double-stroke electromagnet 430, which is driven by two independent primary and secondary coils and two corresponding primary and secondary armatures, respectively, to achieve two independent extension strokes. The rod part near the upper end of the locking rod 410 is fixedly connected to the driving end of the double-stroke electromagnet 430, and the spring reset mechanism 420 is integrated into the bottom of the electromagnet 430. The electromagnet 430 is installed in the internal cavity of the hanging hammer 130. In this embodiment, the specific principle and structure of the double-stroke electromagnet 430 are existing technologies. It controls the movement of the two armatures through two coils, thereby achieving the function of two-stage extension and retraction, which will not be elaborated here. In addition, the spring reset mechanism 420 includes a reset spring 421 and a spring seat 422. The spring seat 422 is fixedly installed on the locking rod 410 at the lower end of the electromagnet 430. The reset spring 421 is connected between the spring seat 422 and the electromagnet 430 and is sleeved on the outer periphery of the locking rod 410, thereby forming a downward elastic support force, providing the locking rod 410 with initial reset power and upward compression elastic margin.

[0067] The dual-stroke electromagnet 430 has three operating states: Initial state: By switching the two-stage coil and the two-stage armature on and off, the first extension stroke is extended and the second extension stroke is retracted. At this time, the locking rod 410 is in the initial position of extending downward. It can cooperate with the swing of the locking shaft 360. After it contacts the arc-shaped guide surface 411, it is pushed upward and passes over the locking rod 410 to achieve automatic locking without power. Unlocked state: By switching the two-stage coil and the two-stage armature on and off, the first telescopic stroke is retracted and the second telescopic stroke is retracted. At this time, the locking rod 410 is fully retracted upward, releasing the limit on the locking shaft 360, and realizing the automatic separation of the ram 200 and the hanging hammer 130. Locking state: By switching the two-stage coil and the two-stage armature on and off, the first extension stroke and the second extension stroke are extended. At this time, the end of the locking rod 410 is inserted into the locking hole 450, forming a double locking structure.

[0068] The locking hole 450 provides reliable radial support for the locking rod 410, significantly improving its shear resistance and preventing bending deformation under heavy loads such as lifting a large-tonnage ramming hammer 200. This significantly enhances the load-bearing capacity and long-term reliability of the connection structure. The opening of the locking hole 450 is machined with a frustum-shaped second guide area 460, similar in shape to the first guide area 211. This precisely guides the insertion of the locking rod 410, preventing minor coaxiality deviations between the hammer 130 and the connecting hole 210 from hindering the smooth insertion of the locking rod into the locking hole 450.

[0069] Furthermore, a flat first support surface 470 is formed on the side of the locking hole 450 near the opening of the latch groove 440. The first support surface 470 is perpendicular to the radial direction of the locking hole 450, and a second support surface 480 is formed on the periphery of the locking rod 410 to cooperate with the first support surface 470 to form a planar contact. Thus, through the cooperation of the first support surface 470 and the second support surface 480, a surface contact can be formed, further strengthening the connection stability of the upper and lower ends of the locking rod 410, thereby enhancing the locking stability of the locking rod 410 on the locking shaft 360.

[0070] Furthermore, a flat contact surface 412 is machined on the inner side of the locking rod 410 away from the opening of the locking groove 440, and a corresponding mating surface 361 is machined on the locking shaft 360 to mate with the contact surface 412. When the connecting lock block 300 is in the locked state, the contact surface 412 and the mating surface 361 fit tightly together to form a surface contact fit, dispersing the concentrated stress of traditional point contact into uniform stress of surface contact. This effectively reduces the wear rate of the contact area between the locking shaft 360 and the locking rod 410, while increasing the contact area and improving the stability and impact resistance of the connection.

[0071] When the connecting locking block 300 is in the locked state, the side of the trigger section 310 away from the hammer 130 forms an inclined third support surface 311, and the inner wall of the mounting cavity 215 correspondingly forms a fourth support surface 216 that mates with the third support surface 311. The fourth support surface 216 is inclined, with its higher side inclined towards the direction close to the central axis of the connecting hole 210. At this time, the third support surface 311 and the fourth support surface 216 are in close contact to form an inclined surface contact support. This support surface can directly transfer most of the gravity load of the hammer 200 to the side wall structure of the connecting hole 210, forming an upward inclined support reaction force, which greatly reduces the shear load borne by the locking rod 410, further improving the load-bearing strength of the overall connection structure, enabling the system to easily adapt to the operating requirements of large-tonnage hammers 200 with a capacity of over one ton.

[0072] At the same time, an inclined fifth support surface 217 is simultaneously formed on the upper inner wall of the mounting cavity 215. After the locking section 320 of the connecting lock block 300 swings up to the upper area of ​​the mounting cavity 215, its side wall abuts against the fifth support surface 217, thereby cooperating with the reset torsion spring to limit the swing of the connecting lock block 300 and prevent the connecting lock block 300 from rotating excessively.

[0073] An infrared reflective module 500 is fixedly installed at the middle of the lower end of the crossbeam 110, and an infrared reflective film 600, which works in conjunction with the infrared reflective module 500, is correspondingly attached to the middle of the upper end of the tamping hammer 200. The infrared reflective module 500 is an integrated infrared detection module, which integrates an infrared transmitter and an infrared receiver. When the hanging hammer 130 and the tamping hammer 200 approach to a preset distance (i.e., the effective detection distance H, usually 0.5-2 meters) and are coaxially aligned, the infrared signal emitted by the infrared transmitter will be reflected by the infrared reflective film 600 and received by the infrared receiver, thereby achieving a rough pre-positioning between the hanging hammer 130 and the tamping hammer 200. This invention adopts an infrared positioning scheme with active emission and passive reflection. Active electronic components are only set on the suspension assembly 100. The infrared reflective film 600 on the tamping hammer 200 does not require power supply and has extremely strong impact resistance, avoiding damage to the electronic components from the violent impact when the tamping hammer 200 lands.

[0074] A proximity switch 700 (not shown in the figure) is fixedly installed in the locking slot 440 at the locking position of the locking shaft 360. The proximity switch 700 is equipped with a sensing block (not shown in the figure) that can sense and cooperate with the locking shaft 360 to detect the position status of the locking shaft 360 in real time.

[0075] The system also includes a control module 800, which is electrically connected to the infrared reflection module 500, the dual-stroke electromagnet 430, and the proximity switch 700. In this embodiment, the control module 800 is a main control circuit board or MCU microprocessor, which is mounted on the suspension assembly 100 and powered by a power supply module 810. The power supply module 810 can be a separate energy storage battery or connected to the main battery of the dynamic compaction machine via a cable. The control module 800 achieves wireless communication with the main control of the dynamic compaction machine through a remote transmission module (GPRS module or WIFI module, etc.). The control module 800 can receive the positioning signal from the infrared reflection module 500 and the locking signal from the proximity switch 700, and send control commands to the dual-stroke electromagnet 430 according to a preset program to realize the automated control of the entire connection and separation process.

[0076] The suspension end 140 includes, from top to bottom, a connecting sleeve 141, a top flange 142, and a bottom flange 143. The upper end of the connecting sleeve 141 is fixedly connected to the steel cable of the dynamic compaction machine to realize the lifting action; the bottom of the connecting sleeve 141 is fixedly connected to the top flange 142. The bottom flange 143 is coaxially rotatably connected to the lower end of the top flange 142 through the connecting shaft 144 in the middle, and the lower end of the bottom flange 143 is fixedly connected to the middle of the upper end of the crossbeam 110.

[0077] An angle limiting structure is provided between the top flange 142 and the bottom flange 143. The angle limiting structure includes a fan-shaped limiting groove 145 formed on the upper surface of the bottom flange 143 and a limiting part 146 fixed to the lower surface of the top flange 142. The fan-shaped limiting groove 145 is coaxially distributed with the connecting shaft 144, and its central angle α is usually set to (20-30)°, so that the crossbeam 110 and the steel cable can be freely adjusted within a swing range of ±(10-15)°; the limiting part 146 extends downward into the fan-shaped limiting groove 145 and can slide freely within the range of the fan-shaped limiting groove 145.

[0078] The angle limiting structure provides a certain range of circumferential swing adjustment space for the crossbeam 110. During the guiding process of the hanging hammer 130 entering the connecting hole 210, the two hanging hammers 130 are guided by the side wall of the connecting hole 210, which can drive the crossbeam 110 to automatically correct the angle. At the same time, the angle limiting structure can limit the excessive rotation of the crossbeam 110, avoid the steel cable from twisting and knotting, and ensure the smoothness of the automatic docking process and the stability of the system operation.

[0079] Combination Figure 11 The complete working process of the automatic connection and separation system of the dynamic compaction hammer 200 of the present invention is as follows: Pre-positioning stage: After the tamping hammer 200 completes one tamping operation and lands, the winch mechanism of the dynamic compaction machine drives the suspension assembly 100 to slowly descend. When the suspension assembly 100 descends to a distance of approximately 0.5-2 meters from the top of the tamping hammer 200, if the hanging hammer 130 is basically coaxially aligned with the tamping hammer 200, the infrared reflection module 500 will receive a signal reflected by the infrared reflective film 600. The control module 800 confirms that the pre-positioning is complete and controls the winch mechanism to continue descending at a low speed.

[0080] Automatic docking stage: The hanging hammer 130 first enters the first guide area 211 of the connecting hole 210 and makes a large-scale position correction under the guidance of the frustum-shaped flared mouth; if there is a circumferential angle deviation, the positioning connecting block 131 will enter the corresponding guide groove 213 under the guidance of the circumferential guide structure. At the same time, the two hanging hammers 130 drive the crossbeam 110 to automatically fine-tune the angle, so as to achieve coaxial and precise positioning of the hanging hammer 130 and the connecting hole 210.

[0081] Automatic locking stage without power: The hanging hammer 130 continues to descend, and the bottom surface of the positioning connecting block 131 pushes the trigger section 310 of the connecting lock block 300, causing the connecting lock block 300 to rotate, so that the locking shaft 360 slides along the arc-shaped guide surface 411 of the locking rod 410 and pushes the locking rod 410 upward; when the locking shaft 360 completely passes the bottom end of the locking rod 410, the locking rod 410 automatically moves down and resets under the action of the spring reset mechanism 420, forming a stop on the locking shaft 360, and completing the initial locking.

[0082] Double locking stage: After the locking shaft 360 enters the locking position, it triggers the proximity switch 700, which sends a locking signal to the control module 800. After receiving the signal, the control module 800 drives the double-stroke electromagnet 430 to perform the second stroke extension action, inserting the end of the locking rod 410 into the locking hole 450 to complete the double locking.

[0083] Lifting and tamping stage: After confirming that the double locking is completed, the winch mechanism drives the suspension assembly 100 and the tamping hammer 200 to rise synchronously to the preset working height; the control module 800 sends an unlocking command to the dual-stroke electromagnet 430, and the dual-stroke electromagnet 430 performs the first and second stroke retraction actions, so that the locking rod 410 retracts completely upward, releasing the limit on the locking shaft 360; the tamping hammer 200 falls freely under the action of gravity, completing the foundation compaction operation.

[0084] Reset phase: After the hammer 200 is released, the connecting lock block 300 automatically resets under the action of the reset torsion spring, and the trigger section 310 re-extends into the guide groove 213; the winch mechanism drives the suspension assembly 100 to fall back, ready to enter the next work cycle.

[0085] In summary, this embodiment solves the core problems of unstable posture and large impact sway in traditional single-connection-point systems by employing a dual-point suspension architecture. Relying on a multi-stage guiding and purely mechanically triggered, non-powered automatic locking structure, it achieves fully automatic docking connection between the tamping hammer 200 and the hanging hammer 130. Combined with an electrically controlled dual-stroke electromagnet 430, it achieves automatic separation and release of the tamping hammer 200. Simultaneously, through surface contact support, double locking, and passive infrared positioning, it comprehensively improves the load-bearing capacity, reliability, and durability of the connection structure. This automatic connection and separation system eliminates the reliance on manual hooks in dynamic compaction operations, significantly reducing the labor intensity and safety risks for construction workers, and significantly improving the efficiency and continuity of dynamic compaction operations, laying a technical foundation for the fully automated development of dynamic compaction construction.

[0086] It should be noted that any reference signs placed between parentheses in the claims should not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. The invention can be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0087] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0088] 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 or an electrical 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.

[0089] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., 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 present invention. In this specification, the illustrative expressions of the above terms should not be construed as necessarily referring 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. An automatic connection and separation system for a dynamic compaction machine hammer, comprising a suspension assembly (100) and a hammer (200), characterized in that: The suspension assembly (100) includes, from top to bottom, a suspension end (140), a crossbeam (110), a connecting cable (120), and a hanging hammer (130) in the shape of an inverted frustum. The top center of the crossbeam (110) is connected to the suspension end (140) and is used to connect with the steel cable of the dynamic compaction machine to maintain a left-right balanced posture. The tops of the two hanging hammers (130) are symmetrically suspended at the lower part of both ends of the crossbeam (110) along the length direction by independent connecting cables (120) to form a double-point suspension structure. The top of the tamping hammer (200) is symmetrically provided with two connecting holes (210), and the center distance between the two connecting holes (210) is equal to the center distance between the two hanging hammers (130); The connecting hole (210) includes a first guide area (211) and a circumferential positioning area (212) from top to bottom. The first guide area (211) is a frustum-shaped flared mouth with an upper diameter larger than a lower diameter. The shape of the circumferential positioning area (212) matches the hanging hammer (130). The upper end of the circumferential positioning area (212) is connected to the lower opening of the first guide area (211). The circumferential positioning area (212) is provided with at least two guide grooves (213) that are evenly distributed around its central axis and extend along the generatrix of the circumferential positioning area (212). The side wall of the hammer (130) is provided with positioning connecting blocks (131) that are the same number as the guide grooves (213) and can slide with each other. The circumferential positioning area (212) is rotatably connected to each guide groove (213) with a swing-type connecting lock block (300) that cooperates with the positioning connecting block (131). The hammer (130) is provided with a locking structure (400) that cooperates with the connecting lock block (300). The connection and separation of the hammer (130) and the tamping hammer (200) are realized through the connection state of the connecting lock block (300) and the locking structure (400). The inner wall of the connecting hole (210) is provided with a circumferential guide structure near the top and symmetrically located on both sides of each guide groove (213). The circumferential guide structure is used to guide the positioning connecting block (131) at the corresponding position into the middle guide groove (213).

2. The automatic connection and separation system for the hammer of a dynamic compaction machine according to claim 1, characterized in that: Each of the guide grooves (213) has an installation cavity (215) on its inner sidewall. The connecting lock block (300) is L-shaped and includes a shorter trigger section (310) at the lower end, a longer latch section (320) at the upper end, and a connecting section (330) between the trigger section (310) and the latch section (320). The connecting section (330) is rotatably connected to the installation cavity (215) via a swing shaft (340), and the position of its shaft allows the trigger section (310) to extend into the guide groove (213) in its natural state. The side wall of the hanging hammer (130) is recessed inward on the upper side of the positioning connecting block (131) to form a locking groove (440). The top surface of the locking groove (440) is provided with a locking rod (410) that can extend and retract along the axial direction of the hanging hammer (130). The locking rod (410) is relatively fixed in its initial downward extension position by a spring reset mechanism (420) and has an extension and retraction margin for upward elastic compression. The bottom end of the locking rod (410) is provided with an inclined arc-shaped guide surface (411) on the side facing the opening of the locking groove (440). The guide surface is inclined from top to bottom into the locking groove (440), so that the thickness of the bottom end of the locking rod (410) gradually decreases towards its bottom. The locking section (320) has a locking shaft (360) parallel to its rotation axis at one end away from the connecting section (330). The rotation path of the locking shaft (360) intersects with the guide surface in the initial position. When the hanging hammer (130) is inserted into the connecting hole (210), the positioning connecting block (131) pushes the trigger section (310) downward to drive the connecting section (330) to rotate synchronously, so that the locking shaft (360) slides into contact with the guide surface on its rotation path to push the locking rod (410) upward. Thus, the locking rod (410) is stopped after passing the locking rod (410) and is moved down and reset to form a locking structure (400).

3. The automatic connection and separation system for the hammer of a dynamic compaction machine according to claim 2, characterized in that: The bottom surface of the latch groove (440) is provided with a locking hole (450) coaxial with the locking rod (410). The initial position of the locking rod (410) is located above the locking hole (450). The latch structure (400) also includes an electromagnet (430). The electromagnet (430) is a double-stroke electromagnet (430) driven by two sets of coils and two sets of armatures respectively. The locking rod (410) is connected to the driving end of the electromagnet (430) to achieve double extension stroke. The spring reset mechanism (420) is provided on the electromagnet (430). The electromagnet (430) is provided inside the hanging hammer (130). The initial position of the locking rod (410) is the state where the electromagnet (430) extends during the first extension stroke and retracts during the second extension stroke; The unlocking position of the locking rod (410) is the state where the first extension stroke of the electromagnet (430) is retracted and the second extension stroke is retracted, so that the locking shaft (360) loses the limitation of the locking rod (410) and realizes the unlocking of the connecting lock block (300) and the latch structure (400), thereby realizing the separation of the ram (200) and the hanging hammer (130); The locking position of the locking rod (410) is such that the electromagnet (430) extends during its first stroke and then extends during its second stroke, so that the end of the locking rod (410) is inserted into the locking hole (450).

4. The automatic connection and separation system for the hammer of a dynamic compaction machine according to claim 2, characterized in that: The locking rod (410) has a flat contact surface (412) on the inner side away from the opening of the locking groove (440), and the locking shaft (360) has a mating surface (361) that mates with the contact surface (412) to form a surface contact.

5. The automatic connection and separation system for the hammer of a dynamic compaction machine according to claim 3, characterized in that: The opening of the locking hole (450) is provided with a frustum-shaped second guide area (460) similar in shape to the first guide area (211). A flat first support surface (470) is formed on the side of the locking hole (450) close to the opening of the latch groove (440). The first support surface (470) is perpendicular to the radial direction of the locking hole (450). A second support surface (480) is formed on the periphery of the locking rod (410) to cooperate with the first support surface (470) to form a planar contact.

6. The automatic connection and separation system for the hammer of a dynamic compaction machine according to claim 2, characterized in that: When the locking shaft (360) enters the locking position of the locking rod (410), the trigger section (310) forms an inclined third support surface (311) on the side away from the hanging hammer (130), and the inner wall of the mounting cavity (215) forms a fourth support surface (216) that cooperates with the third support surface (311) to form a surface contact. The fourth support surface (216) is inclined, and its higher side is inclined toward the direction close to the central axis of the connecting hole (210) where it is located.

7. The automatic connection and separation system for the hammer of a dynamic compaction machine according to claim 2, characterized in that: The end of the swing shaft (340) is coaxially fitted with a reset torsion spring. The two ends of the reset torsion spring are respectively connected to the swing shaft (340) and the inner wall of the mounting cavity (215) to maintain the tendency of the locking section (320) to swing toward the top of the mounting cavity (215). Each of the connecting holes (210) has three guide grooves (213) that are evenly distributed around the connecting hole (210) in the circumference. Each of the hanging hammers (130) has three connecting lock blocks (300) that are evenly distributed around the hanging hammer (130) in the circumference.

8. The automatic connection and separation system for the hammer of a dynamic compaction machine according to claim 1, characterized in that: An infrared reflective module (500) is provided at the lower middle part of the crossbeam (110), and an infrared reflective film (600) is provided at the upper middle part of the hammer (200) to cooperate with the infrared reflective module (500). The infrared reflective module (500) is an integrated infrared detection module with an infrared transmitter and an infrared receiver. When the hammer (130) and the hammer (200) are aligned coaxially, the infrared reflective film (600) is used to reflect the infrared signal emitted by the infrared transmitter to the infrared receiver.

9. The automatic connection and separation system for the hammer of a dynamic compaction machine according to claim 3, characterized in that: It also includes a control module (800), which is electrically connected to an infrared reflection module (500) and an electromagnet (430). A proximity switch (700) is provided in the locking slot (440) at the locking position of the locking shaft (360), and the locking shaft (360) can be inductively engaged with the proximity switch (700).

10. The automatic connection and separation system for a dynamic compaction machine hammer according to claim 1, characterized in that: The suspension end (140) includes, from top to bottom, a connecting sleeve (141), a top flange (142), and a bottom flange (143). The connecting sleeve (141) is used to connect with the steel cable of the dynamic compaction machine to achieve lifting. The top flange (142) is fixed to the bottom of the connecting sleeve (141). The bottom flange (143) is coaxially rotatably connected to the lower end of the top flange (142) through a connecting shaft (144) in the middle. The bottom flange (143) is fixed to the middle of the upper end of the crossbeam (110). An angle limiting structure is provided between the top flange (142) and the bottom flange (143). The angle limiting structure includes a fan-shaped limiting groove (145) provided in one of the top flange (142) or the bottom flange (143) and a limiting part (146) provided in the other of the top flange (142) or the bottom flange (143). The fan-shaped limiting groove (145) is coaxially distributed with the connecting shaft (144), and the limiting part (146) extends into the fan-shaped limiting groove (145) to limit its rotation range.

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