A test method for debugging and verifying pile hammer control systems

Abstract

A test method for debugging and verifying a pile hammer control system, which uses a test device with the same lifting device, electric control device and sensor assembly as the pile hammer, and the test device further comprises a simulated hammer core with the same weight as the hammer body of the pile hammer, compared with the prior art which uses an actual production pile hammer prototype for testing, the test cost can be reduced, the design and installation distance of adjacent sensing blocks can be given in advance through the lifting test in the control system design process of the pile hammer, and whether the control system meets the design requirements can be verified in advance through the hitting simulation test before the actual operation of the pile hammer, the comparison is carried out through sensing block measurement and encoder measurement, the measurement accuracy of the encoder is higher than that of the sensing block measurement method actually used on the pile hammer, the case that the pile hammer control system using the sensing block measurement method does not meet the design requirements can be accurately tested, and the control system can be adjusted according to the experimental results before the pile hammer is actually put into production.

Description

Technical Field

[0001] The present invention relates to the field of pile hammer control systems, and in particular to a test method for debugging and verifying a pile hammer control system. Background Art

[0002] A pile hammer raises the hammer to a desired height and then quickly releases it. The hammer then free-falls, directly impacting the anvil below the hammer, thereby driving the pile into the ground. Existing pile hammers can be automated using control systems. The main components of a pile hammer include a hammer and a lifting device. A steel wire rope is wound around the lifting device's drum and connected to the top of the hammer. The control system enables the lifting device to raise the hammer to a predetermined height, then allows the hammer to free-fall to perform the pile driving operation. The control system includes an electronic control unit, a sensor assembly, and multiple sensor blocks. The sensor blocks are mounted on the hammer and arranged vertically at equal intervals. The sensor assembly includes two sensors at different heights. As the hammer rises and falls, the two sensors detect the same sensor block and transmit signals to the electronic control unit in real time. The control system calculates the hammer's drop height and speed based on the number of sensor blocks detected by the two sensors and the time interval, thereby deriving the hammer's downward impact energy. The control system then provides feedback control over the operation of the pile hammer based on actual needs. During this process, factors such as the spacing between adjacent sensing blocks, as well as the measurement accuracy, calculation accuracy and feedback time of the sensors and electronic control devices will affect the final control results of the control system. Therefore, the control system needs to be tested and verified before the pile hammer is actually put into use to avoid the situation where the control system performs feedback control according to the set requirements, but the actual impact energy of the hammer body has a large error from the actual demand.

[0003] In the prior art, when verifying the control system, the actual pile hammer prototype is tested. During the test, the installation position of the sensor block on the hammer body needs to be adjusted multiple times, which is quite troublesome. Moreover, when the verification result shows that the control system does not meet the requirements, the pile hammer prototype needs to be re-modified and optimized. The cost and difficulty of the modification are huge, and the economic benefits are not cost-effective. However, the prior art lacks a test method that can verify the effectiveness of the control system in the design stage before the actual production of the pile hammer. Summary of the Invention

[0004] The present invention provides a test method for debugging and verifying a pile hammer control system, which can debug and verify the effectiveness of the control system during the design phase of the pile hammer.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a test method for debugging and verifying the control system of a pile hammer, wherein the pile hammer includes a hammer body and a lifting device, a steel wire rope is wound around the drum of the lifting device, and the steel wire rope is connected to the top of the hammer body. The control system can enable the lifting device to drive the hammer body to a preset height, and then allow the hammer body to fall freely to perform pile driving operations. The control system includes an electronic control device, a sensor assembly and a plurality of induction blocks, the induction blocks are mounted on the hammer body, and the plurality of induction blocks are arranged in sequence at the same intervals in the vertical direction. The sensor assembly includes two sensors located at different heights. When the hammer body performs a lifting motion, the two sensors can successively detect the same induction block and transmit the signal to the electronic control device in real time.

[0006] The test method comprises the following steps:

[0007] Step 1: Prepare a test device. The test device includes a lifting device, an electronic control device, and a sensor assembly identical to those of a pile driver. It also includes a simulated hammer core with the same weight as the hammer body of the pile driver. A steel wire rope is wound around the drum of the lifting device, connected to the top of the simulated hammer core. An encoder is also installed on the drum of the lifting device.

[0008] Step 2: Install multiple sensing blocks on the simulated hammer core in sequence at the same interval along the vertical direction, and then control the lifting device through the electronic control device to drive the simulated hammer core to perform an ascending test, so that multiple sensing blocks pass through two sensors located at different heights in sequence. The electronic control device continuously records the number of sensing blocks detected by the two sensors in succession as the real-time passing number, and multiplies the real-time passing number by the interval distance between two adjacent sensing blocks to obtain the measured lifting displacement of the simulated hammer core. The electronic control device is preset with a set lifting displacement of the simulated hammer core. When the measured lifting displacement is greater than or equal to the set lifting displacement, the electronic control device controls the lifting device to stop driving the simulated hammer core to rise. The electronic control device obtains the theoretical lifting displacement of the simulated hammer core based on the measurement data of the encoder during the period when the simulated hammer core rises, and then compares the measured lifting displacement with the theoretical lifting displacement. When the error ratio between the measured lifting displacement and the theoretical lifting displacement is greater than the design requirement, the vertical spacing of the multiple sensing blocks is reduced, and then the simulated hammer core is driven to perform the lifting test again, and the new measured lifting displacement is compared with the theoretical lifting displacement again. When the error ratio between the measured lifting displacement and the theoretical lifting displacement is less than or equal to the design requirement, the spacing between the two adjacent sensing blocks during this lifting test is used as the design installation distance of the adjacent sensing blocks in the pile hammer control system.

[0009] Step 3: Maintain the spacing between the multiple sensing blocks at the designed installation distance, drive the simulated hammer core to rise to the test height through the lifting device, and then control the roller of the lifting device to switch to a free rotation state through the electronic control device. The simulated hammer core begins to fall freely to perform a strike simulation test, so that the multiple sensing blocks pass through two sensors located at different heights in sequence until the simulated hammer core collides with the anvil, and ensure that at least one sensing block is located between the two sensors when the collision occurs. The electronic control device records the last sensing block detected by both sensors and records the interval time between the last sensing block being detected by the two sensors as the end pass time. The electronic control device divides the installation height difference between the two sensors by the end pass time to obtain the measured final velocity of the simulated hammer core, and then calculates the measured strike energy of the simulated hammer core. The electronic control device also obtains the theoretical final velocity of the simulated hammer core based on the measurement data of the encoder during the simulated hammer core's fall, and then calculates the theoretical strike energy of the simulated hammer core. The electronic control device compares the measured strike energy with the theoretical strike energy. When the error ratio between the measured strike energy and the theoretical strike energy is less than or equal to the design requirement, it is verified that the control system meets the design requirements of the pile hammer.

[0010] Preferably, the test device includes multiple support rods, the anvil and the bottom ends of the multiple support rods are installed on the same base, the top ends of the multiple support rods are cooperated to install a top platform, the lifting device is arranged on the top platform, the middle parts of the multiple support rods are cooperated to install a middle platform, the sensor assembly is arranged on the middle platform, the top platform is provided with a through hole for the wire rope to pass through, and the middle platform is provided with a central square hole for the simulated hammer core to pass through, the simulated hammer core includes a long strip of hammer core bottom plate, the top end of the hammer core bottom plate is connected to the wire rope, and an adjustment groove is provided on the hammer core bottom plate in the vertical direction, and multiple sensing blocks are sequentially attached to the surface of the hammer core bottom plate at the same interval distance in the vertical direction, the sensing block cover is provided at the opening on one side of the adjusting groove, and the opening on the other side of the adjusting groove is provided with a threaded positioning piece, the threaded positioning piece and the sensing block are detachably connected by a thread, and the threaded positioning piece and the sensing block are cooperated to clamp the two side surfaces of the hammer core bottom plate, thereby limiting the relative displacement of the sensing block and the hammer core bottom plate.

[0011] Preferably, the hammer core bottom plate is a rectangular flat plate with two adjustment slots formed on it. The induction block is a rectangular rod-shaped structure, and the length direction of the induction block is horizontally arranged and perpendicular to the adjustment slots.

[0012] Preferably, the threaded positioning member is a positioning bolt, a threaded hole is provided on the sensing block, the positioning bolt passes through the adjustment slot and is screwed into the threaded hole, and the head of the positioning bolt and the sensing block cooperate to clamp the hammer core bottom plate.

[0013] Preferably, the threaded positioning member is a positioning nut, and the sensing block is provided with a threaded rod passing through the adjustment slot. The positioning nut is screwed onto the threaded rod and cooperates with the sensing block to clamp the hammer core bottom plate.

[0014] Preferably, two guide blocks are installed in the central square hole, and the two guide blocks are respectively located on both sides of the hammer core bottom plate, and the two guide blocks are cooperated to form guide grooves for clamping the edge of the hammer core bottom plate.

[0015] Preferably, one or more transition platforms are installed in the middle of the multiple support rods, and a central square hole is opened on the transition platform for the simulated hammer core to pass through, and a guide block is also installed in the central square hole of the transition platform.

[0016] Preferably, the sensor assembly includes an L-shaped support and one or more groups of sensors, the base plate of the L-shaped support is installed on the middle platform, each group of sensors includes two upper sensors and lower sensors aligned in the vertical direction, the upper sensors and lower sensors are both installed on the vertical plate of the L-shaped support, and the sensing measuring ends of the upper sensors and lower sensors are both facing the sensing block.

[0017] Preferably, one or more strip holes are provided on the bottom plate of the L-shaped support, and fixing screws are passed through the strip holes. The fixing screws are screwed into the upper surface of the middle platform and can press the bottom plate of the L-shaped support. The length direction of the strip holes is perpendicular to the surface of the hammer core bottom plate on one side of which the sensing block is installed, so as to facilitate the adjustment of the distance between the upper sensor and the lower sensor relative to the sensing block.

[0018] Preferably, the lifting device includes a roller bracket installed on the top platform, a motor is provided on one side of the roller bracket, the output shaft of the motor is connected to the rotating shaft of the roller through an electromagnetic clutch, and the encoder is installed on the side of the roller away from the motor.

[0019] According to the above technical solution, the beneficial effects of the present invention are:

[0020] The test rig employed in the present invention has the same lifting device, electronic control device, and sensor assembly as an actual pile hammer, but utilizes a separately designed simulated hammer core. Therefore, compared to actual pile hammers, the test rig simplifies the structure of the frame and hammer body, facilitating design, manufacturing, and assembly, and reducing costs. The sensor blocks on the simulated hammer core are easier to remove and assemble, and their position can be adjusted more conveniently than on the hammer body of a prototype pile hammer, facilitating multiple tests. Compared to prior art tests using actual pile hammer prototypes, the present invention reduces testing costs and simplifies the testing process. During the design of the pile hammer control system, the design installation distance between adjacent sensor blocks is pre-determined through a lifting test. Before the pile hammer is actually put into operation, a simulated impact test is conducted to verify that the control system meets the design requirements. The specific test is conducted using both sensor block measurement and encoder measurement. The encoder's measurement accuracy is higher than the sensor block measurement method actually used on pile hammers, allowing for more accurate detection of situations where a pile hammer control system using the sensor block measurement method does not meet design requirements. Designers can then adjust the control system based on the experimental results before the pile hammer is put into production. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the experimental device;

[0022] Figure 2 for Figure 1 Left side view after removing the electronic control device;

[0023] Figure 3 for Figure 1 A partial enlarged view of

[0024] Figure 4 for Figure 2 A partial enlarged view of

[0025] Figure 5 It is AA view;

[0026] Figure 6 Schematic diagram of the lifting device.

[0027] Markings in the figure: 1. Anvil, 2. Support rod, 3. Top platform, 4. Middle platform, 5. Transition platform, 6. Guide block, 7. Simulated hammer core, 8. Sensor assembly, 9. Lifting device, 10. Wire rope, 11. Electronic control device, 12. Hammer core bottom plate, 13. Adjustment slot, 14. Induction block, 15. Threaded positioning piece, 16. Upper sensor, 17. Lower sensor, 18. L-shaped support, 19. Bar hole, 20. Fixing screw, 21. Center square hole, 22. Motor, 23. Electromagnetic clutch, 24. Roller, 25. Encoder. DETAILED DESCRIPTION

[0028] The pile hammer of the present invention comprises a hammer and a lifting device. A steel wire rope is wound around the drum of the lifting device and connected to the top of the hammer. A control system enables the lifting device to raise the hammer to a preset height, then allows the hammer to freely fall for pile driving. The control system includes an electronic control device, a sensor assembly, and multiple sensor blocks. The sensor blocks are mounted on the hammer and arranged vertically at equal intervals. The sensor assembly includes two sensors at different heights. As the hammer is raised or lowered, the two sensors detect the same sensor block and transmit signals to the electronic control device in real time. The control system calculates the hammer's drop height and speed based on the number of sensor blocks detected by the two sensors and the time interval, thereby deriving the hammer's downward impact energy. The control system then performs feedback control of the pile hammer based on actual needs. During this process, factors such as the spacing between adjacent sensor blocks, as well as the measurement accuracy, computational accuracy, and feedback time of the sensors and electronic control device, can affect the control system's final results. Therefore, the control system requires testing and verification before the pile hammer is put into actual use.

[0029] The present invention provides a test method for debugging and verifying a pile hammer control system, comprising the following steps:

[0030] Step 1: Make a test device. The test device includes a lifting device 9, an electronic control device 11 and a sensor assembly 8 that are the same as those of the pile hammer. It also includes a simulated hammer core 7 with the same weight as the hammer body of the pile hammer. A wire rope 10 is wound around the drum 24 of the lifting device 9 and connected to the top of the simulated hammer core 7. An encoder 25 is also installed on the drum 24 of the lifting device 9. The encoder 25 can record the number of rotations or speed data of the drum 24.

[0031] Step 2: Install multiple sensing blocks 14 on the simulated hammer core 7 in sequence at the same interval in the vertical direction, and then control the lifting device 9 through the electronic control device 11 to drive the simulated hammer core 7 to perform an ascending test, so that multiple sensing blocks 14 pass through two sensors located at different heights in sequence. The electronic control device 11 continuously records the number of sensing blocks 14 detected by the two sensors in succession as the real-time passing number, and multiplies the real-time passing number by the interval distance between two adjacent sensing blocks 14 to obtain the measured lifting displacement of the simulated hammer core 7. The set lifting displacement of the simulated hammer core 7 is preset in the electronic control device 11. When the measured lifting displacement is greater than or equal to the set lifting displacement, the electronic control device 11 controls the lifting device 9 to stop driving the simulated hammer core 7 to rise.

[0032] After the lifting of the simulation hammer core 7 ends, the electric control device 11 obtains the theoretical lifting displacement of the simulation hammer core 7 according to the measurement data of the encoder 25 during the lifting of the simulation hammer core 7, and then compares the measured lifting displacement with the theoretical lifting displacement. When the error ratio of the measured lifting displacement and the theoretical lifting displacement is greater than the design requirement, the interval distance of the plurality of induction blocks 14 in the vertical direction is reduced, and then the simulation hammer core 7 is driven to rise again for testing, and the new measured lifting displacement is compared with the theoretical lifting displacement again until the error ratio of the measured lifting displacement and the theoretical lifting displacement is less than or equal to the design requirement. The interval distance of the adjacent two induction blocks 14 during this lifting test is taken as the design installation distance of the adjacent induction blocks in the pile hammer control system.

[0033] Step three, keep the interval distance of the plurality of induction blocks 14 as the design installation distance, drive the simulation hammer core 7 to rise to the test height by the lifting device 9, and then control the roller 24 of the lifting device 9 to convert to a free rotation state by the electric control device 11. The simulation hammer core 7 starts to fall freely to perform the impact simulation test, so that the plurality of induction blocks 14 pass through two sensors located at different heights in sequence until the simulation hammer core 7 collides with the anvil 1, and it is ensured that at least one induction block 14 is located between the two sensors when the collision occurs. This can be ensured by adjusting the number of induction blocks 14 before the test, that is, when the simulation hammer core 7 falls to the lowest position, that is, the simulation hammer core 7 and the anvil 1 contact each other, there will still be one or more induction blocks 14 located between the two sensors.

[0034] After the collision occurs, that is, the falling of the simulation hammer core 7 ends, the electric control device 11 records the last induction block 14 detected by the two sensors, and records the interval time when the last induction block 14 is detected by the two sensors as the terminal passing time. The electric control device 11 divides the installation height difference of the two sensors by the terminal passing time to obtain the measured terminal velocity of the simulation hammer core 7, and then calculates the measured impact energy of the simulation hammer core 7. The electric control device 11 also obtains the theoretical terminal velocity of the simulation hammer core 7 according to the measurement data of the encoder 25 during the falling of the simulation hammer core 7, and then calculates the theoretical impact energy of the simulation hammer core 7. Finally, the electric control device 11 compares the measured impact energy with the theoretical impact energy. When the error ratio of the measured impact energy and the theoretical impact energy is less than or equal to the design requirement, it is verified that the control system meets the design requirement of the pile hammer; if the error is large, it can be proved that even if the control system is controlled according to the set requirement, the actual impact energy of the simulation hammer core 7 still has a large error with the actual demand, so the control system needs to be adjusted and cannot be used directly.

[0035] As Figure 1-2As shown, this embodiment provides a specific test device structure, including three support rods 2, the anvil 1 and the bottom ends of the three support rods 2 are installed on the same base, the top ends of the three support rods 2 are equipped with a top platform 3, the lifting device 9 is provided on the top platform 3, the middle parts of the three support rods 2 are equipped with a middle platform 4, the sensor assembly 8 is provided on the middle platform 4, and the top platform 3 is provided with a through hole for the wire rope 10 to pass through, as shown in FIG. Figure 5 As shown, a central square hole 21 is provided on the middle platform 4 for the simulated hammer core 7 to pass through.

[0036] like Figure 3-5 As shown, the simulated hammer core 7 includes a long strip of hammer core bottom plate 12, which is a rectangular flat plate. The top of the hammer core bottom plate 12 is connected to the wire rope 10, and two adjustment grooves 13 are opened on the hammer core bottom plate 12 in the vertical direction. A plurality of sensing blocks 14 are sequentially attached to the surface of the hammer core bottom plate 12 at the same intervals in the vertical direction. The sensing blocks 14 are rectangular rod-shaped structures. The length direction of the sensing blocks 14 is horizontally arranged and perpendicular to the adjustment groove 13. The sensing blocks 14 cover the opening on one side of the adjustment groove 13, and the opening on the other side of the adjustment groove 13 is provided with a threaded positioning member 15. The threaded positioning member 15 and the sensing block 14 are detachably connected by threads. The threaded positioning member 15 and the sensing block 14 cooperate to clamp the two side surfaces of the hammer core bottom plate 12, thereby limiting the relative displacement of the sensing block 14 and the hammer core bottom plate 12.

[0037] like Figure 3 As shown, the threaded positioning member 15 can be a positioning bolt or a positioning nut. When a positioning bolt is used, a threaded hole is formed on the sensing block 14, and the positioning bolt passes through the adjustment slot 13 and is screwed into the threaded hole. The head of the positioning bolt and the sensing block 14 cooperate to clamp the hammer core base plate 12. When a positioning nut is used, the sensing block 14 is provided with a threaded rod passing through the adjustment slot 13. The positioning nut is screwed onto the threaded rod and cooperates with the sensing block 14 to clamp the hammer core base plate 12. The threaded rod and the sensing block 14 can be welded together or have a threaded detachable structure.

[0038] like Figure 1-2 As shown, a transition platform 5 is mounted in the middle of the three support rods 2. The transition platform 5 also has a central square hole 21 for the simulated hammer core 7 to pass through. Two guide blocks 6 are installed in the central square holes 21 of the middle platform 4 and the transition platform 5 respectively. Figure 5 As shown, the two guide blocks 6 are respectively located on both sides of the hammer core bottom plate 12 , and the two guide blocks 6 are cooperated to form guide grooves for clamping the edges of the hammer core bottom plate 12 .

[0039] like Figure 3-5As shown, sensor assembly 8 includes an L-shaped support 18 and one or more sensor groups. The base of L-shaped support 18 is mounted on central platform 4. Each sensor group includes two vertically aligned upper sensors 16 and lower sensors 17. Upper sensors 16 and lower sensors 17 are mounted on the upper plate of L-shaped support 18, with the sensing ends of upper sensors 16 and lower sensors 17 facing sensing block 14. In actual testing, only a single set of upper sensors 16 and lower sensors 17 is typically used, but multiple sets can also be used for comparison.

[0040] like Figure 5 As shown, two strip holes 19 are provided on the bottom plate of the L-shaped support 18, and fixing screws 20 are passed through the strip holes 19. The fixing screws 20 are screwed into the upper surface of the middle platform 4 and can press the bottom plate of the L-shaped support 18. The length direction of the strip hole 19 is perpendicular to the surface of the hammer core bottom plate 12 on the side where the sensing block 14 is installed. When the fixing screws 20 are loosened in the reverse direction, the head of the fixing screws 20 will no longer press down the bottom plate of the L-shaped support 18. At this time, the L-shaped support 18 can be moved along the length direction of the strip hole 19, thereby adjusting the distance between the upper sensor 16 and the lower sensor 17 relative to the sensing block 14.

[0041] like Figure 6 As shown, the lifting device 9 includes a roller bracket mounted on the top platform 3. A motor 22 is provided on one side of the roller bracket. The output shaft of the motor 22 is connected to the rotating shaft of the roller 24 via an electromagnetic clutch 23. An encoder 25 is mounted on the side of the roller 24 away from the motor 22. When the electronic control device 11 sends a signal to keep the electromagnetic clutch 23 engaged, the roller 24 will rotate synchronously with the output shaft of the motor 22. When the electronic control device 11 sends a signal to de-energize the electromagnetic clutch 23, the roller 24 can rotate freely. At this time, due to the gravity of the simulated hammer core 7 and the friction of the wire rope 10, the simulated hammer core 7 will begin to fall freely and drive the roller 24 to rotate. When the roller 24 rotates, the encoder 25 will take measurements, and the measurement accuracy of the encoder 25 is higher than the measurement method of the induction block 14 actually used on the pile hammer. By comparing the two methods of measurement by the induction block 14 and the measurement by the encoder 25 during specific tests, it is possible to more accurately test the situation where the pile hammer control system using the induction block 14 measurement method does not meet the design requirements. The designers can make adjustments to the control system based on the experimental results before the pile hammer is actually put into production.

Claims

1. A test method for debugging and verifying a pile hammer control system, wherein the pile hammer includes a hammer body and a lifting device, a steel wire rope is wound around the drum of the lifting device, and the steel wire rope is connected to the top of the hammer body. The control system can cause the lifting device to drive the hammer body to a preset height, and then cause the hammer body to fall freely to perform a pile driving operation. The control system includes an electronic control device, a sensor assembly, and a plurality of induction blocks. The induction blocks are mounted on the hammer body, and the plurality of induction blocks are arranged in sequence at the same intervals in the vertical direction. The sensor assembly includes two sensors at different heights. When the hammer body is raised or lowered, the two sensors can successively detect the same induction block and transmit the signal to the electronic control device in real time. The control system is characterized in that: The test method comprises the following steps: Step 1: Prepare a test device, which includes a lifting device (9), an electronic control device (11), and a sensor assembly (8) identical to those of a pile hammer, and also includes a simulated hammer core (7) having the same weight as the hammer body of the pile hammer. A steel wire rope (10) is wound around the drum (24) of the lifting device (9), and the steel wire rope (10) is connected to the top of the simulated hammer core (7). An encoder (25) is also installed on the drum (24) of the lifting device (9); The test device also includes a plurality of support rods (2), the bottom ends of the anvil iron (1) and the plurality of support rods (2) are mounted on the same base, the top ends of the plurality of support rods (2) are cooperatively mounted with a top platform (3), a lifting device (9) is arranged on the top platform (3), the middle parts of the plurality of support rods (2) are cooperatively mounted with a middle platform (4), a sensor assembly (8) is arranged on the middle platform (4), a through hole for a steel wire rope (10) to pass through is provided on the top platform (3), a central square hole (21) for a simulated hammer core (7) to pass through is provided on the middle platform (4), the simulated hammer core (7) includes a long strip of hammer core bottom plate (12), the hammer core bottom plate (12 ) is connected to the wire rope (10), an adjustment groove (13) is provided on the hammer core bottom plate (12) in the vertical direction, a plurality of sensing blocks (14) are sequentially attached to the surface of the hammer core bottom plate (12) at the same intervals in the vertical direction, the sensing block (14) covers the opening on one side of the adjustment groove (13), and the opening on the other side of the adjustment groove (13) is provided with a threaded positioning member (15), the threaded positioning member (15) and the sensing block (14) are detachably connected by threads, and the threaded positioning member (15) and the sensing block (14) cooperate to clamp the two side surfaces of the hammer core bottom plate (12), thereby limiting the relative displacement of the sensing block (14) and the hammer core bottom plate (12); Step 2: Multiple sensing blocks (14) are sequentially installed on the simulated hammer core (7) at the same spacing along the vertical direction, and then the lifting device (9) is controlled by the electronic control device (11) to drive the simulated hammer core (7) to perform an ascending test, so that the multiple sensing blocks (14) pass through two sensors located at different heights in sequence. The electronic control device (11) continuously records the number of sensing blocks (14) detected by the two sensors in succession as the real-time passing number, and multiplies the real-time passing number by the spacing distance between two adjacent sensing blocks (14) to obtain the measured lifting displacement of the simulated hammer core (7). The set lifting displacement of the simulated hammer core (7) is preset in the electronic control device (11). When the measured lifting displacement is greater than or equal to the set lifting displacement, the electronic control device (11) controls the lifting device (9) to move upward. ) stops driving the simulated hammer core (7) to rise, the electronic control device (11) obtains the theoretical lifting displacement of the simulated hammer core (7) according to the measurement data of the encoder (25) during the period when the simulated hammer core (7) rises, and then compares the measured lifting displacement with the theoretical lifting displacement. When the error ratio between the measured lifting displacement and the theoretical lifting displacement is greater than the design requirement, the vertical spacing distance of the plurality of sensing blocks (14) is reduced, and then the simulated hammer core (7) is driven again to perform the rising test, and the new measured lifting displacement is compared with the theoretical lifting displacement again, until the error ratio between the measured lifting displacement and the theoretical lifting displacement is less than or equal to the design requirement, and the spacing distance between the two adjacent sensing blocks (14) during this rising test is used as the design installation distance of the adjacent sensing blocks in the pile hammer control system; Step 3: Keep the spacing between the multiple sensing blocks (14) at the designed installation distance, drive the simulated hammer core (7) to rise to the test height through the lifting device (9), and then control the roller (24) of the lifting device (9) to convert to a free rotation state through the electronic control device (11), and the simulated hammer core (7) begins to fall freely to perform a striking simulation test, so that the multiple sensing blocks (14) pass through two sensors at different heights in sequence until the simulated hammer core (7) collides with the anvil (1), and ensure that at least one sensing block (14) is located between the two sensors when the collision occurs. The electronic control device (11) records the last sensing block (14) detected by both sensors, and records the last sensing block ( 14) The interval time detected by the two sensors is used as the terminal passing time. The electronic control device (11) divides the installation height difference of the two sensors and the terminal passing time to obtain the measured terminal velocity of the simulated hammer core (7), and then calculates the measured striking energy of the simulated hammer core (7); the electronic control device (11) also obtains the theoretical terminal velocity of the simulated hammer core (7) based on the measurement data of the encoder (25) during the falling period of the simulated hammer core (7), and then calculates the theoretical striking energy of the simulated hammer core (7); the electronic control device (11) compares the measured striking energy with the theoretical striking energy. When the error ratio between the measured striking energy and the theoretical striking energy is less than or equal to the design requirement, it is verified that the control system meets the design requirements of the pile hammer.

2. A test method for debugging and verifying a pile hammer control system according to claim 1, characterized in that: The hammer core bottom plate (12) is a rectangular flat plate, and two adjustment grooves (13) are opened on the hammer core bottom plate (12). The sensing block (14) is a rectangular rod-shaped structure, and the length direction of the sensing block (14) is horizontally arranged and perpendicular to the adjustment grooves (13).

3. The test method for debugging and verifying a pile hammer control system according to claim 1, characterized in that: The threaded positioning member (15) is a positioning bolt. A threaded hole is provided on the sensing block (14). The positioning bolt passes through the adjustment slot (13) and is screwed into the threaded hole. The head of the positioning bolt and the sensing block (14) cooperate to clamp the hammer core bottom plate (12).

4. The test method for debugging and verifying a pile hammer control system according to claim 1, characterized in that: The threaded positioning member (15) is a positioning nut. A threaded rod penetrating the adjustment slot (13) is provided on the sensing block (14). The positioning nut is screwed onto the threaded rod and cooperates with the sensing block (14) to clamp the hammer core bottom plate (12).

5. The test method for debugging and verifying a pile hammer control system according to claim 1, characterized in that: Two guide blocks (6) are installed in the central square hole (21). The two guide blocks (6) are respectively located on both sides of the hammer core bottom plate (12). The two guide blocks (6) are matched with guide grooves for clamping the edges of the hammer core bottom plate (12).

6. A test method for debugging and verifying a pile hammer control system according to claim 5, characterized in that: One or more transition platforms (5) are also installed in the middle of the plurality of support rods (2). The transition platform (5) is also provided with a central square hole (21) for the simulated hammer core (7) to pass through, and a guide block (6) is also installed in the central square hole (21) of the transition platform (5).

7. The test method for debugging and verifying a pile hammer control system according to claim 1, characterized in that: The sensor assembly (8) includes an L-shaped support (18) and one or more groups of sensors, the bottom plate of the L-shaped support (18) is installed on the middle platform (4), each group of sensors includes two upper sensors (16) and lower sensors (17) aligned in the vertical direction, the upper sensors (16) and the lower sensors (17) are both installed on the vertical plate of the L-shaped support (18), and the sensing measuring ends of the upper sensors (16) and the lower sensors (17) are both facing the sensing block (14).

8. A test method for debugging and verifying a pile hammer control system according to claim 7, characterized in that: One or more strip holes (19) are provided on the bottom plate of the L-shaped support (18), and fixing screws (20) are inserted into the strip holes (19). The fixing screws (20) are screwed into the upper surface of the middle platform (4) and can press the bottom plate of the L-shaped support (18). The length direction of the strip holes (19) is perpendicular to the surface of the hammer core bottom plate (12) on one side of which the sensing block (14) is installed, so as to facilitate adjustment of the distance between the upper sensor (16) and the lower sensor (17) relative to the sensing block (14).

9. The test method for debugging and verifying a pile hammer control system according to claim 1, characterized in that: The lifting device (9) includes a roller bracket installed on the top platform (3), a motor (22) is provided on one side of the roller bracket, an output shaft of the motor (22) is connected to the rotating shaft of the roller (24) through an electromagnetic clutch (23), and the encoder (25) is installed on the side of the roller (24) away from the motor (22).

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