A new type of steel sheet pile forming device for channel revetment and process thereof

Abstract

The application discloses a novel steel sheet pile forming device for channel revetment, and particularly relates to the technical field of punch forming equipment, which comprises a forming base, a punching unit, a fixing plate, an expansion sleeve, an expansion unit, the expansion unit is used for driving the expansion sleeve to generate elastic opening deformation, a pile hook forming unit is arranged on the opposite ends of the forming base, and the pile hook forming unit is used in cooperation with the expansion sleeve. By arranging the expansion sleeve and the expansion unit, the expansion unit drives the expansion sleeve to be in an elastic opening state when the pile hook is formed, the overall outer diameter is consistent, the pile hook forming operation can be performed, the expansion unit drives the expansion sleeve to be elastically contracted after the pile hook is formed, the gap between the periphery of the expansion sleeve and the surface of the pile hook is formed, and the pile hook is not tightly sleeved on the expansion sleeve, so that the pile hook can be conveniently unloaded.

Description

Technical Field

[0001] This invention relates to the field of stamping and forming equipment technology, and more specifically, to a novel steel sheet pile forming device and process for waterway revetment. Background Technology

[0002] Steel sheet piles are a type of steel structure with interlocking joints. Their cross-sections include straight plates, channel shapes, and Z-shapes, and they come in various sizes and interlocking methods. Common types include the Larsen type and the Lakwana type. Their advantages include: high strength, easy penetration into hard soil layers; ability to be constructed in deep water, and the ability to be reinforced with diagonal supports to form a cofferdam when necessary; good waterproofing performance; and the ability to be assembled into cofferdams of various shapes and reused multiple times. Therefore, they have a wide range of applications.

[0003] In the prior art, when forming the pile hooks at both ends of steel sheet piles used in waterways, the two ends of the strip steel need to be heated in the length direction. This makes it easier to form the pile hooks. However, the inventors have found that in actual operation, after heating and forming, the pile hooks cool down relatively quickly, which leads to a certain shrinkage in the pile hook area. The bent part of the pile hook is tightly locked with the pile hook mold, making it difficult to separate the pile hook from the pile hook mold. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the embodiments of the present invention provide a novel steel sheet pile forming device and process for waterway revetment. The technical problem to be solved by the present invention is that it is difficult to separate the pile hook from the pile hook mold when operating the steel sheet pile forming device in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A novel sheet pile forming device for waterway revetments includes a forming base mounted on a forming device, a forming cavity at the top of the forming base, a stamping unit above the forming base, and further includes:

[0007] A fixing plate, which is fixed to the outer walls of opposite sides of the molded base;

[0008] The expansion sleeve is provided in two, with one end of the expansion sleeve horizontally inserted through one of the fixed plates. The expansion sleeve has a sliding cavity in the form of a tapered hole coaxially opened inside. The outer wall of the expansion sleeve has a plurality of deformation slits arranged in an array along its axial direction to penetrate the sliding cavity. The two expansion sleeves correspond to the upper side of the forming cavity.

[0009] An expansion unit is used to drive the expansion sleeve to produce elastic expansion deformation;

[0010] The pile hook forming unit is provided in two, and is respectively located at opposite ends of the forming base. The pile hook forming unit is used in conjunction with the expansion sleeve.

[0011] Furthermore, the stamping unit includes:

[0012] A hydraulic cylinder is mounted on the molding equipment and located above the molding base;

[0013] A forming plate is connected to the hydraulic cylinder and is used in conjunction with the forming cavity.

[0014] Furthermore, the pile hook forming unit includes:

[0015] The driving components are provided in two parts, and are respectively disposed at opposite ends of the molding base;

[0016] The pile hook forming part has two parts and is driven to be connected to the two driving components respectively. The pile hook forming part has a pile hook forming cavity that cooperates with the expansion sleeve.

[0017] Furthermore, the driving component includes:

[0018] A movable hinge seat, which is rotatably connected to the fixed plate;

[0019] A driving cylinder is mounted on the movable hinge seat and is drivingly connected to the pile hook forming part.

[0020] Furthermore, a sliding pin is fixed to the outer wall of the pile hook forming part, and a sliding groove for the sliding pin to be inserted is provided on the fixing plate. The sliding groove includes a first straight groove, an inclined groove and a second straight groove in sequence in the direction away from the forming base. The first straight groove, the inclined groove and the second straight groove are connected end to end in sequence.

[0021] Furthermore, the tightening unit includes:

[0022] A connecting block, which is fixed to the end of the expansion sleeve and connected to the fixing plate;

[0023] A drive column, which is inserted into the sliding cavity and used in conjunction with the sliding cavity;

[0024] A rotating shaft is coaxially rotatably connected to the connecting block, and the driving column is threaded onto the rotating shaft;

[0025] A rotating assembly is disposed on the rotating shaft and is used to drive the rotating shaft to rotate when the sliding pin slides in the first straight groove.

[0026] Further, the rotating assembly includes:

[0027] A gear, which is fitted onto one end of the rotating shaft that extends out of the connecting block;

[0028] A fixed ring is sleeved on the end of the sliding pin, and a rack post is fixedly connected to the periphery of the fixed ring. When the sliding pin slides in the first straight groove, the rack post meshes with the gear.

[0029] Furthermore, the connecting block has a blind hole-shaped mounting groove, in which a spiral spring is installed. The spiral spring is fitted onto the rotating shaft, and its two ends are respectively fixed to the inner wall of the mounting groove and the outer wall of the rotating shaft.

[0030] Furthermore, a discharge notch is provided on one of the fixed plates away from the connecting block, and a discharge cylinder is horizontally installed on the other fixed plate. A pusher block is driven and connected to the discharge cylinder, and a through groove is provided on the fixed plate for the pusher block to pass freely.

[0031] A novel forming process for steel sheet piles used for waterway revetments, applied to the forming device described above, includes:

[0032] The steel strip material of the sheet pile is placed on the top of the forming base, and the stamping unit is activated to form and stamp the steel strip material, so that the steel strip material is pressed into a U shape.

[0033] The expansion unit operates, causing the expansion sleeve to be elastically expanded with a uniform outer diameter. The pile hook forming unit operates, thereby pressing both ends of the strip steel raw material in the length direction into coiled pile hooks, which are then fitted onto the expansion sleeve.

[0034] When the pile hook forming unit is reset, the tightening unit is then reset, causing the tightening sleeve to elastically contract, resulting in the outer diameter of the tightening sleeve decreasing sequentially along its length, thereby creating a gap between the periphery of the tightening sleeve and the surface of the pile hook.

[0035] The technical effects and advantages of this invention are as follows:

[0036] By setting up an expansion sleeve and an expansion unit, during the pile hook forming process, the expansion unit drives the expansion sleeve to be in an elastically expanded state, and the outer diameter of the sleeve is consistent throughout, which enables the pile hook forming operation. After the pile hook is formed, the expansion unit drives the expansion sleeve to elastically contract, thereby creating a gap between the periphery of the expansion sleeve and the surface of the pile hook, thus preventing the pile hook from being tightly fitted onto the expansion sleeve, which facilitates the unloading of the pile hook.

[0037] By setting a sliding pin and a sliding groove, the sliding groove includes a first straight groove, an inclined groove and a second straight groove. When the drive assembly drives the pile hook forming part to move toward the forming base, the sliding pin slides sequentially on the second straight groove, the straight groove and the first straight groove. When the sliding pin slides from the second straight groove to the inclined groove, the pile hook forming part will move downwards at an angle, so that the highest point of the inner wall of the pile hook forming cavity is above the end of the strip steel material, and generates downward pressure on the end of the strip steel material. In this way, when the sliding pin slides from the inclined groove to the first straight groove, the inner wall of the pile hook forming cavity will squeeze the end of the strip steel material into a curled shape, thereby avoiding the end of the strip steel material from bending upwards during forming, resulting in lower precision after forming.

[0038] By setting the sliding pin to slide on the first straight groove, the rack column and gear mesh and drive, thereby rotating the drive gear, causing the rotating shaft to rotate. When the rotating shaft rotates, it engages with the drive column thread, thereby causing the drive column to slide in the sliding cavity, so that the expansion sleeve can produce elastic expansion deformation or elastic contraction deformation, and the structure is simple. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of a novel steel sheet pile forming device for waterway revetment according to the present invention;

[0040] Figure 2 for Figure 1 A side view diagram of the mid-structure;

[0041] Figure 3 for Figure 2 Enlarged schematic diagram of the local structure at point A;

[0042] Figure 4 for Figure 1 Schematic diagram of the rear view angle of the mid-section structure;

[0043] Figure 5 for Figure 1 A schematic diagram of the central structure from the front view angle;

[0044] Figure 6 for Figure 5 Enlarged schematic diagram of the local structure at point B;

[0045] Figure 7 for Figure 5 The structural diagram omitting the fixed plate, hydraulic cylinder, and forming pressure plate is shown in the image.

[0046] Figure 8 for Figure 7 A top-view diagram of the mid-structure;

[0047] Figure 9 This is a schematic diagram of the assembled structure of the expansion sleeve, gear, and connecting block in this invention;

[0048] Figure 10 for Figure 9 Schematic diagram of the explosive decomposition of the medium structure;

[0049] Figure 11 for Figure 9 Cross-sectional view of the structure.

[0050] The attached figures are labeled as follows: 1. Hydraulic cylinder; 2. Forming plate; 3. Discharge cylinder; 4. Fixing plate; 5. Forming cavity; 6. Pile hook forming part; 7. First straight groove; 8. Inclined groove; 9. Second straight groove; 10. Drive cylinder; 11. Movable hinge seat; 12. Pushing block; 13. Forming base; 14. Rack column; 15. Scroll spring; 16. Rotating shaft; 17. Gear; 18. Sliding pin; 19. Fixing ring; 20. Expansion sleeve; 21. Pile hook forming cavity; 22. Connecting block; 23. Expansion joint; 24. Drive column; 25. Sliding cavity. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] like Figures 1-11 As shown, this embodiment discloses a novel sheet pile forming device for waterway revetment, including a forming base 13 installed on a forming device. The top of the forming base 13 has a forming cavity 5. A hydraulic cylinder 1 is vertically installed on the forming device, located above the forming base 13. A forming pressure plate 2 is threaded onto the output rod of the hydraulic cylinder 1. The forming pressure plate 2 cooperates with the forming cavity 5. Fixing plates 4 are fixedly connected to the outer walls of opposite sides of the forming base 13. The fixing plates 4 are vertical, and two expansion sleeves 20 are threaded onto one of the fixing plates 4. The two expansion sleeves 20 correspond to the two ends of the forming base 13 along its length. A connecting block 22 is welded to one end of the connecting fixing plate 4. The connecting block 22 is connected to the fixing plate 4 by screws. A sliding cavity 25 in the form of a tapered hole is coaxially opened inside the expansion sleeve 20. The inner diameter of the sliding cavity 25 increases sequentially in the direction away from the forming base 13. Multiple deformation slots 23 penetrating the sliding cavity 25 are arranged in an array along its axial direction on the outer wall of the expansion sleeve 20. This allows the expansion sleeve 20 to elastically expand when subjected to the squeezing force along its outer side. Conversely, the expansion sleeve 20 will elastically contract. Two expansion sleeves 20 correspond to the upper side of the forming cavity 5. The inner walls on both sides of the forming cavity 5 are tangent to the periphery of the two expansion sleeves 20 respectively.

[0053] During the forming operation, the steel strip of the sheet pile is laid flat on the top of the forming base 13, with both ends overlapping the two ends of the forming base 13 in the length direction. The two fixing plates 4 limit the width direction of the steel strip. Then, the hydraulic cylinder 1 is activated, and the output rod of the hydraulic cylinder 1 extends, driving the forming pressure plate 2 to move downward, so that the forming pressure plate 2 exerts downward pressure on the middle of the steel strip, thereby making the forming pressure plate 2 press the steel strip into shape. The forming pressure plate 2 is squeezed into the forming cavity 5, thereby making the steel strip into a U-shape, with the ends of the steel strip in the length direction inclined upward.

[0054] Two fixed plates 4 are connected to mounting columns at their respective ends along the length of the molding base 13. A movable hinge 11 that can rotate freely is sleeved on the mounting column. A drive cylinder 10 is installed on the movable hinge 11. A pile hook forming part 6 is threadedly connected to the output rod of the drive cylinder 10. A pile hook forming cavity 21 is opened on the side of the pile hook forming part 6 facing the molding base 13. The pile hook forming cavity 21 is used in conjunction with the expansion sleeve 20. A sliding pin 18 is fixedly connected to the outer wall of the pile hook forming part 6. A sliding groove for the sliding pin 18 to be inserted is opened on the fixed plate 4. The sliding groove includes a first straight groove 7, an inclined groove 8 and a second straight groove 9 in sequence in the direction away from the molding base 13. The first straight groove 7, the inclined groove 8 and the second straight groove 9 are connected end to end in sequence.

[0055] After the strip steel raw material is initially pressed and formed, the two drive cylinders 10 are started. The output rod of the drive cylinder 10 extends and drives the pile hook forming part 6 to move towards the forming base 13, so that the sliding pin 18 slides from the second straight groove 9 into the inclined groove 8. During the sliding process, the pile hook forming part 6 will move downward at an angle, so that the highest point of the inner wall of the pile hook forming cavity 21 is above the end of the strip steel raw material, and generates downward pressure on the end of the strip steel raw material. In this way, when the sliding pin 18 slides from the inclined groove 8 to the first straight groove 7, the inner wall of the pile hook forming cavity 21 will squeeze the end of the strip steel raw material into a curled shape, thereby preventing the end of the strip steel raw material from bending upward during forming.

[0056] A drive column 24 is inserted into the sliding cavity 25. The drive column 24 and the sliding cavity 25 are used together. In addition, a rotating shaft 16 is coaxially connected to the connecting block 22 with a bearing. The rotating shaft 16 and the drive column 24 are threaded together. That is, the drive column 24 is threaded onto the rotating shaft 16. A gear 17 is sleeved on one end of the rotating shaft 16 that protrudes from the connecting block 22. A fixing ring 19 is sleeved on the end of the sliding pin 18, and a rack column 14 is fixed to the periphery of the fixing ring 19. When the sliding pin 18 slides in the first straight groove 7, the rack column 14 meshes with the gear 17. A blind hole type mounting groove is opened in the connecting block 22. A spiral spring 15 is installed in the mounting groove. The spiral spring 15 is sleeved on the rotating shaft 16, and the two ends of the spiral spring 15 are respectively fixed to the inner wall of the mounting groove and the outer wall of the rotating shaft 16.

[0057] When gear 17 is not engaged with rack post 14, the spiral spring 15 is in an open state, causing the rotating shaft 16 to rotate. When the rotating shaft 16 rotates, the drive post 24 and the rotating shaft 16 are screwed together, allowing the drive post 24 to move towards the connecting block 22 within the sliding cavity 25. This eliminates the pressure exerted by the drive post 24 on the inner wall of the sliding cavity 25, and the expansion sleeve 20 is in an elastic contraction state, meaning the outer diameter of the expansion sleeve 20 decreases sequentially in the direction away from the connecting block 22. When the sliding pin 18 slides from the inclined groove 8 to the first straight groove 7, rack post 14 will engage with gear 17. As the sliding pin 18 continues to move, gear 17 rotates, causing the rotating shaft 16 to rotate in the opposite direction. The rotating shaft 16 and the drive post 24 are screwed together in the opposite direction, causing the drive post 24 to move in the opposite direction. The movement causes the expansion sleeve 20 to elastically expand and deform. At this time, the outer diameter of the expansion sleeve 20 is uniform. When the end of the strip steel material is squeezed by the inner wall of the pile hook forming cavity 21 and wrapped around the expansion sleeve 20, the end of the strip steel material is pressed into a pile hook. At the same time, the spiral spring 15 is in an elastic contraction state and accumulates elastic potential energy. After the forming is completed, when the sliding pin 18 slides from the first straight groove 7 to the inclined groove 8, the gear 17 will rotate in the opposite direction, causing the drive column 24 to move in the direction of the connecting block 22, so that the expansion sleeve 20 is in an elastic contraction state. When the gear 17 completely disengages from the rack column 14, the expansion sleeve 20 is completely in an elastic contraction state. In this embodiment, the spiral spring 15 has a certain torque on the rotating shaft 16, so that when the gear 17 and the rack column 14 are not engaged, the rotating shaft 16 will not rotate on its own.

[0058] In addition, a discharge notch is provided on a fixed plate 4 away from the connecting block 22, and a discharge cylinder 3 is horizontally mounted on another fixed plate 4 via a bracket. A pusher block 12 is driven and connected to the discharge cylinder 3. The fixed plate 4 has a through groove for the pusher block 12 to pass freely. After the forming and stamping are completed, the discharge cylinder 3 is started, the cylinder rod of the discharge cylinder 3 is extended, and the pusher block 12 is driven to move towards the inside of the forming cavity 5, so that the pusher block 12 pushes the formed strip steel material, and then the strip steel material falls from the discharge notch.

[0059] The working principle of this invention is as follows: During the forming operation, the strip steel material of the steel sheet pile is laid flat on the top of the forming base 13, with both ends overlapping the two ends of the forming base 13 in the length direction. The two fixing plates 4 limit the width direction of the strip steel material. Then, the hydraulic cylinder 1 is activated, and the output rod of the hydraulic cylinder 1 extends, driving the forming pressure plate 2 to move downward, so that the forming pressure plate 2 exerts downward pressure on the middle of the strip steel material, thereby making the forming pressure plate 2 press and form the strip steel material. The forming pressure plate 2 is squeezed into the forming cavity 5, thereby making the strip steel material be pressed into a U-shape, with the end of the strip steel material in the length direction inclined upward.

[0060] After the strip steel raw material is initially pressed and formed, the two drive cylinders 10 are started. The output rod of the drive cylinder 10 extends and drives the pile hook forming part 6 to move towards the forming base 13, so that the sliding pin 18 slides from the second straight groove 9 into the inclined groove 8. During the sliding process, the pile hook forming part 6 will move downward at an angle, so that the highest point of the inner wall of the pile hook forming cavity 21 is above the end of the strip steel raw material, and generates downward pressure on the end of the strip steel raw material. Thus, when the sliding pin 18 slides from the inclined groove 8 to the first straight groove 7, the inner wall of the pile hook forming cavity 21 will squeeze the end of the strip steel raw material into a curled shape, so that the end of the strip steel raw material is pressed into a pile hook.

[0061] When the sliding pin 18 slides from the inclined groove 8 to the first straight groove 7, the rack column 14 will mesh with the gear 17. As the sliding pin 18 continues to move, the gear 17 rotates, which in turn drives the rotating shaft 16 to rotate in the opposite direction. The rotating shaft 16 and the drive column 24 are screwed in the opposite direction, causing the drive column 24 to move in the opposite direction and causing the expansion sleeve 20 to elastically expand and deform. At this time, the outer diameter of the expansion sleeve 20 is uniform. When the end of the strip steel material is squeezed by the inner wall of the pile hook forming cavity 21 and wrapped around the expansion sleeve 20, the end of the strip steel material is pressed into a pile hook. At the same time, the spiral spring 15 is in an elastic contraction state and accumulates elastic potential energy. After the forming is completed, when the sliding pin 18 slides from the first straight groove 7 to the inclined groove 8, the gear 17 will rotate in the opposite direction, causing the drive column 24 to move in the direction of the connecting block 22, causing the expansion sleeve 20 to elastically contract. When the gear 17 completely disengages from the rack column 14, the expansion sleeve 20 is in a completely elastic contraction state.

[0062] After the forming and stamping are completed, the discharge cylinder 3 is started. The cylinder rod of the discharge cylinder 3 extends and drives the pusher block 12 to move towards the inside of the forming cavity 5, so that the pusher block 12 pushes the formed strip steel material and then drops the strip steel material from the discharge notch.

[0063] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0064] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0065] In conclusion, the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel sheet pile forming device for waterway revetment, comprising a forming base (13) installed on a forming device, wherein a forming cavity (5) is provided on the top of the forming base (13), and a stamping unit is provided above the forming base (13), characterized in that, Also includes: Fixing plate (4), the fixing plate (4) is fixed to the outer walls of opposite sides of the molding base (13); Two expansion sleeves (20) are provided, and one end of each expansion sleeve (20) is horizontally inserted into one of the fixed plates (4). A sliding cavity (25) in the form of a tapered hole is coaxially opened inside the expansion sleeve (20). Multiple deformation slots (23) penetrating the sliding cavity (25) are arranged in an array along the axial direction on the outer wall of the expansion sleeve (20). The two expansion sleeves (20) correspond to the upper side of the forming cavity (5). An expansion unit is used to drive the expansion sleeve (20) to produce an elastic expansion deformation; Two pile hook forming units are provided, respectively located at opposite ends of the forming base (13). The pile hook forming units are used in conjunction with the expansion sleeve (20). Each pile hook forming unit includes: Two drive components are provided and are respectively disposed at opposite ends of the molding base (13); Two pile hook forming parts (6) are provided and are respectively driven and connected to the two driving components. The pile hook forming parts (6) are provided with pile hook forming cavities (21) that cooperate with the expansion sleeve (20). A sliding pin (18) is fixedly connected to the outer wall of the pile hook forming part (6). A sliding groove for the sliding pin (18) to be inserted is provided on the fixing plate (4). The sliding groove includes a first straight groove (7), an inclined groove (8), and a second straight groove (9) in sequence in the direction away from the forming base (13). The first straight groove (7), the inclined groove (8), and the second straight groove (9) are connected end to end in sequence. The expansion unit includes: Connecting block (22), the connecting block (22) is fixed to the end of the expansion sleeve (20), and the connecting block (22) is connected to the fixing plate (4); A drive column (24) is inserted into the sliding cavity (25) and is used in conjunction with the sliding cavity (25); A rotating shaft (16) is coaxially rotatably connected to the connecting block (22), and the driving column (24) is threaded onto the rotating shaft (16); A rotating assembly is disposed on the rotating shaft (16) and is used to drive the rotating shaft (16) to rotate when the sliding pin (18) slides in the first straight groove (7).

2. The novel sheet pile forming device for waterway revetment according to claim 1, characterized in that, The stamping unit includes: Hydraulic cylinder (1), the hydraulic cylinder (1) is provided on the molding equipment and located above the molding base (13); A forming plate (2) is connected to the hydraulic cylinder (1) and is used in conjunction with the forming cavity (5).

3. The novel sheet pile forming device for waterway revetment according to claim 1, characterized in that, The driving component includes: Movable hinge (11), which is rotatably connected to the fixed plate (4); A drive cylinder (10) is mounted on the movable hinge seat (11) and is driven to connect with the pile hook forming part (6).

4. The novel steel sheet pile forming device for waterway revetment according to claim 1, characterized in that, The rotating component includes: Gear (17), the gear (17) is sleeved on one end of the rotating shaft (16) that extends out of the connecting block (22); A fixed ring (19) is sleeved on the end of the sliding pin (18), and a rack column (14) is fixedly connected to the periphery of the fixed ring (19). When the sliding pin (18) slides in the first straight groove (7), the rack column (14) meshes with the gear (17).

5. The novel sheet pile forming device for waterway revetment according to claim 4, characterized in that, The connecting block (22) has a blind hole-shaped mounting groove, and a spiral spring (15) is installed in the mounting groove. The spiral spring (15) is fitted on the rotating shaft (16), and the two ends of the spiral spring (15) are respectively fixed to the inner wall of the mounting groove and the outer wall of the rotating shaft (16).

6. The novel sheet pile forming device for waterway revetment according to claim 5, characterized in that, A discharge notch is provided on one of the fixed plates (4) away from the connecting block (22), and a discharge cylinder (3) is horizontally installed on the other fixed plate (4). A pusher block (12) is driven and connected to the discharge cylinder (3), and a through groove is provided on the fixed plate (4) for the pusher block (12) to pass freely.

7. A novel forming process for steel sheet piles used for waterway revetment, applied to the forming device described in claim 1, characterized in that, include: The strip steel material of the steel sheet pile is placed on the top of the forming base (13), the forming unit is activated, and the strip steel material is formed and stamped, so that the strip steel material is pressed into a U shape; The expansion unit operates, causing the expansion sleeve (20) to be elastically expanded and with a uniform outer diameter throughout. The pile hook forming unit operates, thereby pressing the two ends of the strip steel raw material in the length direction into a coiled pile hook, which is then fitted onto the expansion sleeve (20). When the pile hook forming unit is reset, the tightening unit is then reset, causing the tightening sleeve (20) to be in an elastic contraction state, so that the outer diameter of the tightening sleeve (20) decreases sequentially along its length direction, thereby creating a gap between the periphery of the tightening sleeve (20) and the surface of the pile hook.

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