Lock catch structure of steel pipe pile and using method of lock catch structure

Abstract

The invention relates to the technical field of steel cofferdam construction, and discloses a lock catch structure of a steel pipe pile and a using method thereof.The lock catch structure of the steel pipe pile comprises a supporting mechanism, the supporting mechanism further comprises a steel pipe pile body, an O-shaped lock catch pipe is fixedly connected to the outer wall of the steel pipe pile body, and a C-shaped lock catch pipe is fixedly connected to the outer wall of the steel pipe pile body; when the steel pipe pile body is used in a big river, a worker inserts the O-shaped lock catch pipe into the C-shaped lock catch pipe to enable the two steel pipe pile bodies to be connected together, and at the moment, due to the fact that the outer wall size of the O-shaped lock catch pipe is smaller than the inner wall size of the C-shaped lock catch pipe, when the steel pipe pile body is inserted and driven, the O-shaped lock catch pipe cannot make contact with the C-shaped lock catch pipe; when the steel pipe pile body is inserted and driven in place, the O-shaped lock catch pipe does not make contact with the C-shaped lock catch pipe, friction resistance between lock catches can be reduced, the steel pipe pile can sink to the designed depth more easily, and the piling speed is increased.

Description

Technical Field

[0001] The invention relates to the technical field of steel cofferdam construction equipment, in particular to a locking structure of a steel pipe pile and a use method thereof. Background Art

[0002] Steel pipe piles are usually used for the foundations of heavy structures such as buildings, bridges, and docks. They provide strong bearing capacity and support the weight of the superstructure. More and more extra-large bridge projects are being built on major rivers. Deepwater foundation construction is difficult and has high safety risks. Therefore, cofferdams provide a good construction environment for bridge pedestal construction. The cofferdam is mainly composed of multiple steel pipe columns arranged in sequence, and two adjacent steel pipe columns are connected by a locking structure.

[0003] Among them, the common steel pipe pile locking structure generally uses a CT or CO structure to connect two steel pipes. When the steel pipe pile with a CO lock structure is used, the O-type locking tube and the C-type locking tube are often required to be in close contact with each other in order to prevent water leakage. However, when the steel pipe pile is driven, the close contact between the two increases the friction, which may make the driving process not smooth enough, affecting the driving efficiency and the linearity of the pile. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a locking structure of a steel pipe pile, comprising a supporting mechanism, the supporting mechanism also comprising a steel pipe pile body, an O-shaped locking tube is fixedly connected to the outer wall of the steel pipe pile body, and a C-shaped locking tube is fixedly connected to the outer wall of the steel pipe pile body;

[0005] The blocking mechanism includes a sliding groove provided on the inner wall of the O-shaped lock tube, a spring push plate is slidably connected to the inner wall of the sliding groove, and a push rod is fixedly connected to the side wall of the spring push plate;

[0006] The extrusion mechanism comprises a placement groove 1 arranged on the inner wall of the O-shaped lock tube, a placement rod 2 is slidably connected to the inner wall of the placement groove 1, and a rotating frame is rotatably connected to the inner wall of the placement groove 1.

[0007] Preferably, the support mechanism further comprises a water accumulation hole provided on the inner wall of the O-type lock tube, a water inlet hole is provided on the inner wall of the O-type lock tube, a filter screen is fixedly connected to the inner wall of the water inlet hole, a hollow tube is slidably connected to the inner wall of the water accumulation hole, and a water blocking rod is slidably connected to the inner wall of the hollow tube;

[0008] Among them, a sliding hole is opened on the inner wall of the O-type locking tube, and the inner wall of the sliding hole is slidably connected with the outer wall of the water-blocking rod. When the steel pipe pile body is used in large rivers, the staff inserts the O-type locking tube into the C-type locking tube to connect the two steel pipe pile bodies together. At this time, since the outer wall size of the O-type locking tube is smaller than the inner wall size of the C-type locking tube, when the steel pipe pile body is inserted, the O-type locking tube will not contact the C-type locking tube, and the friction between the two will be less affected until the steel pipe pile body is inserted into place. After it is in place, the water in the lake will enter the water inlet hole, and enter the water accumulation hole through the filter to prevent impurities in the water from entering the water accumulation hole. Since the pressure inside the water accumulation hole is lower than the pressure in the external water environment, the water will continue to enter the water accumulation hole. As the amount of water in the water accumulation hole increases, the water will come into contact with the hollow pipe. Since the water depth of large rivers is deeper and the length of the steel pipe pile body is also longer, the greater the pressure in the water, the greater the buoyancy. After the hollow pipe comes into contact with water, it will be affected by the greater buoyancy and will rise.

[0009] Preferably, the support mechanism further comprises three support blocks arranged at the outer wall of the O-shaped lock tube, the side walls of the three support blocks are rotatably connected to two connecting rods, the inner walls of the three connecting rods at the top are rotatably connected to the outer wall of the hollow tube, and the inner walls of the three connecting rods at the bottom are rotatably connected to the outer wall of the O-shaped lock tube;

[0010] Among them, two spring arc blocks are slidably connected to the inner walls of the three support blocks, and rubber blocks are fixedly connected to the side walls of the six spring arc blocks, which drive the connecting rod to rotate. When the connecting rod rotates, it will push the support block to move toward the inner wall of the C-shaped locking tube, driving the spring arc block to move until the support block and the inner wall of the C-shaped locking tube are in contact. Since the spring arc block was previously in an extruded state, as the support block moves, the support blocks will move away from each other, releasing the resilience of the spring arc block, so that the multiple spring arc blocks are always in a fitted state, allowing the rubber block on the spring arc block to fit the inner wall of the C-shaped locking tube.

[0011] Preferably, the support mechanism further comprises an extrusion groove provided on the inner wall of the two spring arc-shaped blocks located on the right side, an air inlet groove is provided on the inner wall of the two rubber blocks located on the right side, a spring extrusion plate is slidably connected to the inner wall of the two extrusion grooves, and five sliding rods are fixedly connected to the side walls of the two spring extrusion plates;

[0012] Air inlet holes are provided on the inner walls of the two spring extrusion plates and the sliding rods, and the outer walls of the ten sliding rods are slidably connected to the inner wall of the rubber block to support the inner wall of the C-type locking tube. During insertion, the O-type locking tube will not contact the C-type locking tube. After the insertion is completed, the inner wall of the C-type locking tube is supported to achieve rear contact, which can reduce the friction resistance between the locks, making it easier for the steel pipe pile to sink to the designed depth and speed up the piling speed. At the same time, the O-type locking tube and the C-type locking tube can form self-locking, so that the C-type locking tube maintains a stable and well-connected state, thereby improving the adaptability of the overall locking structure.

[0013] Preferably, the blocking mechanism also includes a blocking plate 1 fixedly connected to the side wall of the spring push plate, the outer wall of the blocking plate 1 is slidably connected to the inner wall of the water inlet hole, the inner wall of the placement groove 1 is slidably connected with a blocking plate 2, the side wall of the blocking plate 2 is fixedly connected to the side wall of the placement rod 2, the side of the placement rod 2 away from the blocking plate 2 is slidably connected to the inner wall of the rotating frame, and a sliding cavity 1 is opened on the inner wall of the O-shaped lock tube. When the spring arc block on the right side moves, the rebound force of the spring arc block will be released, so that the spring arc block enters, such as: Figure 7 In the inclined plane shown, the rubber block on the right side contacts the push rod, which will push the push rod to move. The movement of the push rod will push the spring push plate to move, driving the blocking plate 1 to move. The movement of the blocking plate 1 will gradually reduce the amount of water entering the water inlet hole. As the blocking plate 1 continues to move, the blocking plate 1 will contact the blocking plate 2, and water can only enter through the water inlet hole of the blocking plate 2. At this time, the blocking plate 1 continues to move and pushes the blocking plate 2 to move until the blocking plate 2 enters the placement slot 1, such as: Figure 7 As shown, the blocking plate will close the water inlet hole to prevent the insertion of other steel pipe pile bodies, which will cause large fluctuations in the lake water and the water level in the water accumulation hole to fluctuate, which may cause the hollow tube to rise or fall, making it difficult for the support block and the spring arc block to always fit with the C-lock tube, affecting the stability of the support.

[0014] Preferably, the extrusion mechanism further comprises a spring return rod 1 slidably connected to the inner wall of the sliding chamber 1, the side wall of the spring return rod 1 is slidably connected to the inner wall of the rotating frame, the side wall of the spring return rod 1 is fixedly connected to a piston rod, and the outer wall of the piston rod is slidably connected to the inner wall of the water inlet hole;

[0015] Among them, a placement groove 2 is opened on the inner wall of the O-type lock tube, and a connecting rod is fixedly connected to the side wall of the piston rod. The force of the movement of the blocking plate 2 is utilized. When the blocking plate 2 moves, it will drive the placement rod 2 to move, so that the placement rod 2 slides on the inner wall of the rotating frame, and the rotating frame is pushed to rotate. The rotation of the rotating frame will push the spring return rod 1 to move, so that the spring return rod 1 is squeezed and accumulates rebound force. When the spring return rod 1 moves, it will also drive the piston rod to move. When the piston rod moves, it will push the liquid in the water inlet hole, and the excess liquid will be discharged through the water inlet hole of the blocking plate 2, so that the space in the water inlet hole is reduced.

[0016] Preferably, the extrusion mechanism further comprises a concave-convex plate slidably connected to the inner wall of the second placement groove, the side wall of the concave-convex plate is fixedly connected to the side wall of the connecting rod, a sliding cavity 2 is opened on the inner wall of the O-shaped lock tube, a spring return rod 2 is slidably connected to the inner wall of the sliding cavity 2, and the side wall of the spring return rod 2 is slidably connected to the side wall of the concave-convex plate;

[0017] Among them, a scraper plate 1 is fixedly connected to the side wall of the sliding cavity 2, and a scraper plate 2 is fixedly connected to the side wall of the scraper plate 1. By utilizing the force of the piston rod moving, when the piston rod moves, the piston rod will drive the placement groove 2 to move, so that the concave-convex plate moves. When the concave-convex plate moves, the concave surface of the concave-convex plate will move to the convex surface, pushing the spring return rod 2 to move, so that the spring return rod 2 is squeezed and accumulates rebound force. When the spring return rod 2 moves, it will push the scraper plate 1 to move, drive the scraper plate 2 to move, and remove impurities attached to the surface of the filter.

[0018] A method for using a locking structure of a steel pipe pile comprises the following steps:

[0019] S1: When using the steel pipe pile body in large rivers, the staff inserts the O-type locking tube into the C-type locking tube to connect the two steel pipe pile bodies together until the steel pipe pile body is inserted into place;

[0020] S2: After it is in place, the water in the lake will enter the water inlet hole, and then enter the water accumulation hole through the filter to prevent impurities in the water from entering the water accumulation hole. Since the pressure inside the water accumulation hole is lower than the pressure in the external water environment, the water will continue to enter the water accumulation hole;

[0021] S3: As the amount of water in the water accumulation hole increases, the water will come into contact with the hollow tube. Since the water in large rivers is deep and the length of the steel pipe pile is long, the pressure in the water will be greater and the buoyancy will be greater. After the hollow tube comes into contact with the water, it will be affected by the greater buoyancy and will rise.

[0022] The present invention has the following beneficial effects:

[0023] (1) When the present invention is used, when the steel pipe pile body is used in large rivers, the staff inserts the O-type locking tube into the C-type locking tube to connect the two steel pipe pile bodies together. At this time, since the outer wall size of the O-type locking tube is smaller than the inner wall size of the C-type locking tube, when the steel pipe pile body is inserted, the O-type locking tube will not contact the C-type locking tube, and the friction between the two is relatively small until the steel pipe pile body is inserted into place. After it is in place, the water in the lake will enter the water inlet hole and enter the water accumulation hole through the filter screen to prevent impurities in the water from entering the water accumulation hole. Since the pressure inside the water accumulation hole is lower than the pressure in the external water environment, the water will continue to enter the water accumulation hole. As the amount of water in the water accumulation hole increases, the water will contact the hollow pipe. Since the water depth of large rivers is deep and the length of the steel pipe pile body is also long, the greater the pressure in the water, the greater the buoyancy. After the hollow pipe contacts with water, it is affected by the large buoyancy, and the hollow pipe is The spring arc block will move away from each other as the support block moves, releasing the resilience of the spring arc block, so that the multiple spring arc blocks are always in a fitted state, allowing the rubber block on the spring arc block to fit the inner wall of the C-type locking tube to support the inner wall of the C-type locking tube. During insertion and driving, the O-type locking tube will not contact the C-type locking tube. After the insertion and driving is completed, the inner wall of the C-type locking tube is supported to achieve rear contact, which can reduce the friction resistance between the locks, making it easier for the steel pipe pile to sink to the designed depth and speeding up the piling speed. At the same time, the O-type locking tube and the C-type locking tube can form a self-locking state, so that the C-type locking tube maintains a stable and well-connected state, thereby improving the adaptability of the overall locking structure.

[0024] (2) The present invention utilizes the force of the spring arc block moving. When the spring arc block on the right side moves, it will drive the spring extrusion plate and the sliding rod to move. When the sliding rod contacts the C-shaped lock tube, the sliding rod will be squeezed, pushing the spring extrusion plate to slide in the extrusion groove, squeezing the gas in the extrusion groove. The squeezed gas will enter the rubber block through the air inlet hole, causing the rubber block to expand. At the same time, when the spring arc block on the right side moves, the rebound force of the spring arc block will be released, causing the spring arc block to enter, such as: Figure 7 In the inclined plane shown, the rubber block on the right side contacts the push rod, which will push the push rod to move. The movement of the push rod will push the spring push plate to move, driving the blocking plate 1 to move. The movement of the blocking plate 1 will gradually reduce the amount of water entering the water inlet hole. As the blocking plate 1 continues to move, the blocking plate 1 will contact the blocking plate 2, and water can only enter through the water inlet hole of the blocking plate 2. At this time, the blocking plate 1 continues to move and pushes the blocking plate 2 to move until the blocking plate 2 enters the placement slot 1, such as: Fig. 9 As shown, the blocking plate will close the water inlet hole to prevent the insertion of other steel pipe pile bodies, which will cause large fluctuations in the lake water and the water level in the water accumulation hole to fluctuate, which may cause the hollow tube to rise or fall, making it difficult for the support block and the spring arc block to always fit with the C-type lock tube, affecting the stability of the support; in addition, the rubber block is allowed to expand, which can better fit the joints of the O-type lock tube and the C-type lock tube, ensuring the sealing of the O-type lock tube and the C-type lock tube to prevent water leakage

[0025] (3) The present invention utilizes the force of the movement of the second blocking plate. When the second blocking plate moves, it drives the second placement rod to move, allowing the second placement rod to slide on the inner wall of the rotating frame, pushing the rotating frame to rotate. The rotation of the rotating frame will drive the spring return rod to move, so that the spring return rod is squeezed and accumulates rebound force. When the spring return rod moves, it will also drive the piston rod to move. When the piston rod moves, it will push the liquid in the water inlet hole. The excess liquid will be discharged through the water inlet hole of the second blocking plate, reducing the space in the water inlet hole until the blocking plate completely closes the water inlet hole. At this time, part of the liquid will enter the side of the piston rod close to the placement groove, such as: Fig. 9 As shown, the space in the water inlet hole is increased again after sealing, thereby reducing the liquid pressure in the water inlet hole, avoiding excessive pressure in the water accumulation hole, and slightly reducing the supporting force of the support block to prevent the support block from fitting too tightly with the C-type lock tube, resulting in local stress concentration.

[0026] (4) The present invention utilizes the force of the piston rod movement. When the piston rod moves, the piston rod drives the placement groove 2 to move, so that the concave-convex plate moves. When the concave-convex plate moves, the concave surface of the concave-convex plate moves to the convex surface, pushing the spring return rod 2 to move, so that the spring return rod 2 is squeezed and accumulates rebound force. When the spring return rod 2 moves, it drives the scraper 1 to move, driving the scraper 2 to move, and removing impurities attached to the surface of the filter screen. When the steel pipe pile body needs to be removed, the water blocking rod is pulled to separate the water blocking rod from the hollow pipe, and the liquid enters the hollow pipe, and then presses The hollow tube will be able to drop, allowing the support block to return to its position. The return of the support block will cause the spring push plate to return to its position, allowing the blocking plate to open. When the hollow tube is pressed, the liquid in the water accumulation hole will be subjected to a greater extrusion force, thereby pushing the liquid to be discharged from the water inlet hole. At this time, the concave-convex plate will return to its position, and the spring return rod 2 will also return to its position, driving the scraper 1 and the scraper 2 to return, and scrape the impurities on the filter screen again, and cooperate with the discharged liquid to discharge the impurities from the water inlet hole, keeping the filter screen unobstructed, being able to maintain a good filtering effect, and preventing impurities from entering the water accumulation hole and affecting the sliding of the hollow tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0028] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 3 It is a cross-sectional schematic diagram of an O-type lock tube of the present invention;

[0031] Figure 4 It is a cross-sectional schematic diagram of a hollow tube of the present invention;

[0032] Figure 5 It is a cross-sectional schematic diagram of a C-type locking tube of the present invention;

[0033] Figure 6 It is a top cross-sectional schematic diagram of an O-type lock tube of the present invention;

[0034] Figure 7 For the present invention Figure 6 A is an enlarged schematic diagram;

[0035] Figure 8 For the present invention Figure 6 A magnified schematic diagram of B;

[0036] Fig. 9 This is a schematic diagram of the working process of the piston rod of the present invention;

[0037] Fig.10 It is a schematic diagram of the working process of the present invention.

[0038] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0039] In the figure: 1. Support mechanism; 101. Steel pipe pile body; 102. O-type locking tube; 103. C-type locking tube; 104. Water accumulation hole; 105. Water inlet hole; 106. Filter screen; 107. Hollow tube; 108. Water blocking rod; 109. Sliding hole; 110. Connecting rod; 111. Support block; 112. Spring arc block; 113. Rubber block; 114. Extrusion groove; 115. Spring extrusion plate; 116. Air inlet groove; 117. Sliding rod; 118. Air inlet hole; 2. Blocking mechanism Structure; 201, sliding groove; 202, spring push plate; 203, push rod; 204, blocking plate 1; 205, blocking plate 2; 3, extrusion mechanism; 301, placement groove 1; 302, placement rod 2; 303, rotating frame; 304, spring return rod 1; 305, sliding chamber 1; 306, piston rod; 307, placement groove 2; 308, connecting rod; 309, concave-convex plate; 310, spring return rod 2; 311, sliding chamber 2; 312, scraper 1; 313, scraper 2. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] For example, see Figure 1 - Figure 5 The present invention is a locking structure of a steel pipe pile, comprising a supporting mechanism 1, wherein the supporting mechanism 1 further comprises a steel pipe pile body 101, an O-shaped locking tube 102 is fixedly connected to the outer wall of the steel pipe pile body 101, and a C-shaped locking tube 103 is fixedly connected to the outer wall of the steel pipe pile body 101;

[0042] The blocking mechanism 2 includes a sliding groove 201 formed on the inner wall of the O-shaped lock tube 102, a spring push plate 202 is slidably connected to the inner wall of the sliding groove 201, and a push rod 203 is fixedly connected to the side wall of the spring push plate 202;

[0043] The extrusion mechanism 3 includes a placement groove 301 provided on the inner wall of the O-type lock tube 102, a placement rod 2 302 is slidably connected to the inner wall of the placement groove 301, and a rotating frame 303 is rotatably connected to the inner wall of the placement groove 301.

[0044] The support mechanism 1 further includes a water accumulation hole 104 provided on the inner wall of the O-type lock tube 102, a water inlet hole 105 provided on the inner wall of the O-type lock tube 102, a filter screen 106 fixedly connected to the inner wall of the water inlet hole 105, a hollow tube 107 slidably connected to the inner wall of the water accumulation hole 104, and a water blocking rod 108 slidably connected to the inner wall of the hollow tube 107;

[0045] Among them, a sliding hole 109 is opened on the inner wall of the O-type locking tube 102, and the inner wall of the sliding hole 109 is slidably connected with the outer wall of the water blocking rod 108. When the steel pipe pile body 101 is used in large rivers, the staff inserts the O-type locking tube 102 into the C-type locking tube 103 to connect the two steel pipe pile bodies 101 together. At this time, since the outer wall size of the O-type locking tube 102 is smaller than the inner wall size of the C-type locking tube 103, when the steel pipe pile body 101 is inserted, the O-type locking tube 102 will not contact the C-type locking tube 103, and the friction between the two is less affected until the steel pipe pile body 101 is inserted. After being drilled in place, the water in the lake will enter the water inlet hole 105, and will be filtered through the filter screen 106 and enter the water accumulation hole 104, preventing impurities in the water from entering the water accumulation hole 104. Since the pressure inside the water accumulation hole 104 is lower than the pressure in the external water environment, the water will continue to enter the water accumulation hole 104. As the amount of water in the water accumulation hole 104 increases, the water will contact the hollow tube 107. Since the water depth of large rivers is deeper and the length of the steel pipe pile body 101 is also longer, the greater the pressure in the water, the greater the buoyancy. After the hollow tube 107 contacts with the water, it will be affected by the greater buoyancy and will rise.

[0046] The support mechanism 1 also includes three support blocks 111 arranged on the outer wall of the O-shaped lock tube 102, and the side walls of the three support blocks 111 are rotatably connected to two connecting rods 110, the inner walls of the three connecting rods 110 located at the top are rotatably connected to the outer wall of the hollow tube 107, and the inner walls of the three connecting rods 110 located at the bottom are rotatably connected to the outer wall of the O-shaped lock tube 102;

[0047] Among them, two spring arc blocks 112 are slidably connected to the inner walls of the three support blocks 111, and rubber blocks 113 are fixedly connected to the side walls of the six spring arc blocks 112, which drive the connecting rod 110 to rotate. When the connecting rod 110 rotates, it will push the support block 111 to move toward the inner wall of the C-shaped locking tube 103, driving the spring arc block 112 to move until the support block 111 and the inner wall of the C-shaped locking tube 103 are in contact. Since the spring arc blocks 112 were previously in an extruded state, as the support blocks 111 move, the support blocks 111 will move away from each other, releasing the resilience of the spring arc blocks 112, so that the multiple spring arc blocks 112 are always in a fitted state, allowing the rubber blocks 113 on the spring arc blocks 112 to fit the inner wall of the C-shaped locking tube 103.

[0048] The support mechanism 1 further includes an extrusion groove 114 provided on the inner wall of the two spring arc blocks 112 located on the right side, an air inlet groove 116 is provided on the inner wall of the two rubber blocks 113 located on the right side, a spring extrusion plate 115 is slidably connected to the inner wall of the two extrusion grooves 114, and five sliding rods 117 are fixedly connected to the side walls of the two spring extrusion plates 115;

[0049] Air inlet holes 118 are provided on the inner walls of the two spring extrusion plates 115 and the sliding rod 117, and the outer walls of the ten sliding rods 117 are slidably connected to the inner wall of the rubber block 113 to support the inner wall of the C-type locking tube 103. During insertion, the O-type locking tube 102 will not contact the C-type locking tube 103. After the insertion is completed, the inner wall of the C-type locking tube 103 is supported to achieve rear contact, which can reduce the friction resistance between the locks, making it easier for the steel pipe pile to sink to the designed depth and speed up the piling speed. At the same time, the O-type locking tube 102 and the C-type locking tube 103 can form a self-locking state, so that the C-type locking tube 103 maintains a stable and well-connected state, thereby improving the adaptability of the overall locking structure.

[0050] For example 2, please refer to Figure 6 - Fig.10 The present invention is a locking structure of a steel pipe pile. On the basis of the first embodiment, the blocking mechanism 2 also includes a blocking plate 204 fixedly connected to the side wall of the spring push plate 202. The outer wall of the blocking plate 204 is slidably connected to the inner wall of the water inlet hole 105. The inner wall of the placement groove 301 is slidably connected with a blocking plate 205. The side wall of the blocking plate 205 is fixedly connected to the side wall of the placement rod 202. The side of the placement rod 202 away from the blocking plate 205 is slidably connected to the inner wall of the rotating frame 303. A sliding cavity 305 is opened on the inner wall of the O-type locking tube 102. When the spring arc block 112 on the right side moves, the rebound force of the spring arc block 112 will be released, so that the spring arc block 112 enters, such as: Figure 7 In the inclined plane shown, the rubber block 113 on the right side contacts the push rod 203, which pushes the push rod 203 to move. The movement of the push rod 203 pushes the spring push plate 202 to move, driving the blocking plate 1 204 to move. The movement of the blocking plate 1 204 will gradually reduce the amount of water entering the water inlet hole 105. As the blocking plate 1 204 continues to move, the blocking plate 1 204 will contact the blocking plate 2 205, and water can only enter through the water inlet hole of the blocking plate 205. At this time, the blocking plate 1 204 continues to move and pushes the blocking plate 2 205 to move until the blocking plate 2 205 enters the placement groove 1 301, as shown: Fig. 9As shown, the blocking plate 204 will close the water inlet 105 to prevent the insertion of other steel pipe pile bodies 101, which will cause large fluctuations in the lake water and the water level in the water accumulation hole 104 to fluctuate, which may cause the hollow tube 107 to rise or fall, making it difficult for the support block 111 and the spring arc block 112 to always fit with the C-shaped locking tube 103, affecting the stability of the support.

[0051] The extrusion mechanism 3 further includes a spring return rod 304 slidably connected to the inner wall of the sliding cavity 305, the side wall of the spring return rod 304 is slidably connected to the inner wall of the rotating frame 303, the side wall of the spring return rod 304 is fixedly connected to a piston rod 306, and the outer wall of the piston rod 306 is slidably connected to the inner wall of the water inlet hole 105;

[0052] Among them, a placement groove 2 307 is opened on the inner wall of the O-lock tube 102, and a connecting rod 308 is fixedly connected to the side wall of the piston rod 306. By utilizing the force of the movement of the second blocking plate, when the second blocking plate 205 moves, it will drive the placement rod 2 302 to move, so that the placement rod 2 302 slides on the inner wall of the rotating frame 303, pushing the rotating frame 303 to rotate. The rotation of the rotating frame 303 will push the spring return rod 1 304 to move, so that the spring return rod 1 304 is squeezed and accumulates rebound force. When the spring return rod 1 304 moves, it will also drive the piston rod 306 to move. When the piston rod 306 moves, it will push the liquid in the water inlet hole 105, and the excess liquid will be discharged through the water inlet hole of the second blocking plate 205, so that the space in the water inlet hole 105 is reduced.

[0053] The extrusion mechanism 3 further includes a concave-convex plate 309 slidably connected to the inner wall of the second placement groove 307, the side wall of the concave-convex plate 309 is fixedly connected to the side wall of the connecting rod 308, a second sliding cavity 311 is opened on the inner wall of the O-type lock tube 102, a second spring return rod 310 is slidably connected to the inner wall of the second sliding cavity 311, and the side wall of the second spring return rod 310 is slidably connected to the side wall of the concave-convex plate 309;

[0054] Among them, a scraper plate 1 312 is fixedly connected to the side wall of the sliding cavity 2 311, and a scraper plate 2 313 is fixedly connected to the side wall of the scraper plate 1 312. By utilizing the force of the movement of the piston rod 306, when the piston rod 306 moves, the piston rod 306 will drive the placement groove 2 307 to move, so that the concave-convex plate 309 moves. When the concave-convex plate 309 moves, the concave surface of the concave-convex plate 309 will move to the convex surface, pushing the spring return rod 2 310 to move, so that the spring return rod 2 310 is squeezed and accumulates rebound force. When the spring return rod 2 310 moves, it will push the scraper plate 1 312 to move, drive the scraper plate 2 313 to move, and remove impurities attached to the surface of the filter 106.

[0055] There is no limitation on the number of the above components, and relevant technicians in the field can freely set them according to actual needs, as long as the above components are installed at the connection positions of the corresponding components.

[0056] The method for using the locking structure of the steel pipe pile includes the following steps:

[0057] S1: When the steel pipe pile body 101 is used in a large river, the staff inserts the O-type locking tube 102 into the C-type locking tube 103 to connect the two steel pipe pile bodies 101 together until the steel pipe pile body 101 is inserted into place;

[0058] S2: After it is in place, the water in the lake will enter the water inlet hole 105, and will be filtered through the filter 106 and enter the water accumulation hole 104, preventing impurities in the water from entering the water accumulation hole 104. Since the pressure inside the water accumulation hole 104 is lower than the pressure in the external water environment, the water will continue to enter the water accumulation hole 104;

[0059] S3: As the amount of water in the water accumulation hole 104 increases, the water will come into contact with the hollow tube 107. Since the water in large rivers is deep and the length of the steel pipe pile body 101 is long, the pressure in the water will be greater and the buoyancy will be greater. After the hollow tube 107 comes into contact with the water, it will be affected by the greater buoyancy and will rise.

[0060] A specific application of this embodiment is: when the present invention is used, when the steel pipe pile body 101 is used in a large river, the staff inserts the O-type locking tube 102 into the C-type locking tube 103 to connect the two steel pipe pile bodies 101 together. At this time, since the outer wall size of the O-type locking tube 102 is smaller than the inner wall size of the C-type locking tube 103, when the steel pipe pile body 101 is inserted, the O-type locking tube 102 will not contact the C-type locking tube 103, and the friction between the two will be less affected until the steel pipe pile body 101 is inserted into place. After it is in place, the water in the lake It will enter the water inlet hole 105, and enter the water accumulation hole 104 through the filter screen 106 to prevent impurities in the water from entering the water accumulation hole 104. Since the pressure inside the water accumulation hole 104 is lower than the pressure in the external water environment, water will continue to enter the water accumulation hole 104. As the amount of water in the water accumulation hole 104 increases, the water will contact the hollow pipe 107. Since the water depth of large rivers is deep and the length of the steel pipe pile body 101 is long, the greater the pressure in the water, the greater the buoyancy. After the hollow pipe 107 contacts with water, it is affected by the greater buoyancy. 07 will rise, driving the connecting rod 110 to rotate. When the connecting rod 110 rotates, it will push the support block 111 to move toward the inner wall of the C-shaped locking tube 103, driving the spring arc block 112 to move until the support block 111 contacts the inner wall of the C-shaped locking tube 103. Since the spring arc block 112 is previously in a squeezed state, as the support block 111 moves, the support blocks 111 will move away from each other, releasing the rebound force of the spring arc block 112, so that the multiple spring arc blocks 112 are always in a fitted state, allowing the rubber block 113 on the spring arc block 112 and The inner wall of the C-type locking tube 103 is fitted to support the inner wall of the C-type locking tube 103. When the O-type locking tube 102 is inserted and driven, it will not contact the C-type locking tube 103. After the insertion and driving are completed, the inner wall of the C-type locking tube 103 is supported to achieve rear contact, which can reduce the friction resistance between the locking buckles, making it easier for the steel pipe pile to sink to the designed depth and speed up the pile driving. At the same time, the O-type locking tube 102 and the C-type locking tube 103 can form a self-locking, so that the C-type locking tube 103 maintains a stable and well-connected state, thereby improving the adaptability of the overall locking structure;

[0061] Secondly, when the spring arc block 112 on the right side moves, it will drive the spring extrusion plate 115 and the sliding rod 117 to move. When the sliding rod 117 contacts the C-shaped lock tube 103, the sliding rod 117 will be squeezed, pushing the spring extrusion plate 115 to slide in the extrusion groove 114, squeezing the gas in the extrusion groove 114. The squeezed gas will enter the rubber block 113 through the air inlet 118, allowing the rubber block 113 to expand. At the same time, when the spring arc block 112 on the right side moves, the rebound force of the spring arc block 112 will be released, allowing the spring arc block 112 to enter, such as: Figure 7In the inclined plane shown, the rubber block 113 on the right side contacts the push rod 203, which will push the push rod 203 to move. The movement of the push rod 203 will push the spring push plate 202 to move, driving the blocking plate 1 204 to move. The movement of the blocking plate 1 204 will gradually reduce the amount of water entering the water inlet hole 105. As the blocking plate 1 204 continues to move, the blocking plate 1 204 will contact the blocking plate 2 205, and water can only enter through the water inlet hole of the blocking plate 205. At this time, the blocking plate 1 204 continues to move and pushes the blocking plate 2 205 to move until the blocking plate 2 205 enters the placement groove 1 301, such as: Fig. 9 As shown, the blocking plate 204 will close the water inlet hole 105 to prevent the insertion of other steel pipe pile bodies 101, which will cause the lake water to fluctuate greatly, causing the water level in the water accumulation hole 104 to fluctuate, which may cause the hollow tube 107 to rise or fall, making it difficult for the support block 111 and the spring arc block 112 to always fit with the C-type locking tube 103, affecting the stability of the support; in addition, the rubber block 113 is allowed to expand, so that it can better fit the joint between the O-type locking tube 102 and the C-type locking tube 103, ensuring the sealing of the O-type locking tube 102 and the C-type locking tube 103, and preventing water leakage;

[0062] Secondly, when the blocking plate 205 moves, it will drive the placement rod 202 to move, so that the placement rod 202 slides on the inner wall of the rotating frame 303, pushing the rotating frame 303 to rotate. The rotation of the rotating frame 303 will push the spring return rod 1 304 to move, so that the spring return rod 1 304 is squeezed and accumulates resilience. When the spring return rod 1 304 moves, it will also drive the piston rod 306 to move. When the piston rod 306 moves, it will push the liquid in the water inlet hole 105. The excess liquid will be discharged through the water inlet hole of the blocking plate 205, so that the space in the water inlet hole 105 is reduced until the blocking plate 1 204 completely closes the water inlet hole 105. At this time, part of the liquid will enter the side of the piston rod 306 close to the placement groove 1 301, such as: Fig. 9 As shown, the space in the water inlet hole 105 is increased again after sealing, thereby reducing the liquid pressure in the water inlet hole 105, avoiding excessive pressure in the water accumulation hole 104, and slightly reducing the supporting force of the support block 111 to prevent the support block 111 from being too tightly fitted with the C-shaped locking tube 103, resulting in local stress concentration;

[0063] Secondly, when the piston rod 306 moves, the piston rod 306 will drive the placement groove 2 307 to move, so that the concave-convex plate 309 moves. When the concave-convex plate 309 moves, the concave surface of the concave-convex plate 309 will move to the convex surface, pushing the spring return rod 2 310 to move, so that the spring return rod 2 310 is squeezed and accumulates resilience. When the spring return rod 2 310 moves, it will push the scraper 1 312 to move, driving the scraper 2 313 to move, and remove impurities attached to the surface of the filter screen 106. When the steel pipe pile body 101 needs to be removed, the water blocking rod 108 is pulled to separate the water blocking rod 108 from the hollow tube 107, and the liquid will enter the hollow tube 107, and then the hollow tube 107 is pressed, and the air is removed. The core tube 107 can then drop to allow the support block 111 to return to its original position. The return of the support block 111 will cause the spring push plate 202 to return to its original position, allowing the blocking plate 1 204 to open. When the hollow tube 107 is pressed, the liquid in the water accumulation hole 104 will be subjected to a greater squeezing force, thereby pushing the liquid to be discharged from the water inlet hole 105. At this time, the concave-convex plate 309 will return to its original position, and the spring return rod 2 310 will also return to its original position, driving the scraper 1 312 and the scraper 2 313 to return to their original positions, scraping the impurities on the filter screen 106 again, and cooperating with the discharged liquid, allowing the impurities to be discharged from the water inlet hole 105, keeping the filter screen 106 unobstructed, being able to maintain a good filtering effect, and preventing impurities from entering the water accumulation hole 104 and affecting the sliding of the hollow tube 107.

[0064] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A locking structure for a steel pipe pile, comprising a supporting mechanism (1), wherein the supporting mechanism (1) further comprises a steel pipe pile body (101), an O-shaped locking tube (102) being fixedly connected to the outer wall of the steel pipe pile body (101), and a C-shaped locking tube (103) being fixedly connected to the outer wall of the steel pipe pile body (101), wherein: Also includes: A blocking mechanism (2), the blocking mechanism (2) comprising a sliding groove (201) provided on the inner wall of the O-type lock tube (102), a spring push plate (202) being slidably connected to the inner wall of the sliding groove (201), and a push rod (203) being fixedly connected to the side wall of the spring push plate (202); The squeezing mechanism (3) comprises a placement groove (301) provided on the inner wall of the O-type lock tube (102), a placement rod (302) being slidably connected to the inner wall of the placement groove (301), and a rotating frame (303) being rotatably connected to the inner wall of the placement groove (301).

2. The locking structure of a steel pipe pile according to claim 1, characterized in that: The support mechanism (1) further comprises a water accumulation hole (104) provided on the inner wall of the O-type lock tube (102); a water inlet hole (105) is provided on the inner wall of the O-type lock tube (102); a filter screen (106) is fixedly connected to the inner wall of the water inlet hole (105); a hollow tube (107) is slidably connected to the inner wall of the water accumulation hole (104); and a water blocking rod (108) is slidably connected to the inner wall of the hollow tube (107); Wherein, a sliding hole (109) is opened on the inner wall of the O-type lock tube (102), and the inner wall of the sliding hole (109) is slidably connected to the outer wall of the water blocking rod (108).

3. The locking structure of a steel pipe pile according to claim 2, characterized in that: The support mechanism (1) further comprises three support blocks (111) arranged on the outer wall of the O-shaped lock tube (102); the side walls of the three support blocks (111) are rotatably connected to two connecting rods (110); the inner walls of the three connecting rods (110) at the top are rotatably connected to the outer wall of the hollow tube (107); and the inner walls of the three connecting rods (110) at the bottom are rotatably connected to the outer wall of the O-shaped lock tube (102); The inner walls of the three support blocks (111) are all slidably connected to two spring arc blocks (112), and the side walls of the six spring arc blocks (112) are all fixedly connected to rubber blocks (113).

4. The locking structure of a steel pipe pile according to claim 3, characterized in that: The support mechanism (1) further comprises an extrusion groove (114) provided on the inner wall of the two spring arc blocks (112) located on the right side, an air inlet groove (116) is provided on the inner wall of the two rubber blocks (113) located on the right side, a spring extrusion plate (115) is slidably connected to the inner wall of the two extrusion grooves (114), and five sliding rods (117) are fixedly connected to the side walls of the two spring extrusion plates (115); The inner walls of the two spring extrusion plates (115) and the sliding rod (117) are provided with air inlet holes (118), and the outer walls of the ten sliding rods (117) are slidably connected to the inner wall of the rubber block (113).

5. The locking structure of a steel pipe pile according to claim 4, characterized in that: The blocking mechanism (2) also includes a blocking plate 1 (204) fixedly connected to the side wall of the spring push plate (202); the outer wall of the blocking plate 1 (204) is slidably connected to the inner wall of the water inlet hole (105); the inner wall of the placement groove 1 (301) is slidably connected to a blocking plate 2 (205); the side wall of the blocking plate 2 (205) is fixedly connected to the side wall of the placement rod 2 (302); the side of the placement rod 2 (302) away from the blocking plate 2 (205) is slidably connected to the inner wall of the rotating frame (303); and a sliding cavity 1 (305) is provided on the inner wall of the O-type lock tube (102).

6. The locking structure of a steel pipe pile according to claim 5, characterized in that: The squeezing mechanism (3) further comprises a spring return rod (304) slidably connected to the inner wall of the sliding chamber (305); the side wall of the spring return rod (304) is slidably connected to the inner wall of the rotating frame (303); the side wall of the spring return rod (304) is fixedly connected to a piston rod (306); the outer wall of the piston rod (306) is slidably connected to the inner wall of the water inlet hole (105); Wherein, a second placement groove (307) is provided on the inner wall of the O-type lock tube (102), and a connecting rod (308) is fixedly connected to the side wall of the piston rod (306).

7. The locking structure of a steel pipe pile according to claim 6, characterized in that: The extrusion mechanism (3) further comprises a concave-convex plate (309) slidably connected to the inner wall of the second placement groove (307), the side wall of the concave-convex plate (309) is fixedly connected to the side wall of the connecting rod (308), the inner wall of the O-type lock tube (102) is provided with a second sliding cavity (311), the inner wall of the second sliding cavity (311) is slidably connected to a second spring return rod (310), and the side wall of the second spring return rod (310) is slidably connected to the side wall of the concave-convex plate (309); Wherein, a scraper plate 1 (312) is fixedly connected to the side wall of the sliding cavity 2 (311), and a scraper plate 2 (313) is fixedly connected to the side wall of the scraper plate 1 (312).

8. A method for using a locking structure of a steel pipe pile, using the locking structure of a steel pipe pile as claimed in claim 7, characterized in that: The following steps are included: S1: When the steel pipe pile body (101) is used in a large river, the staff inserts the O-type locking tube (102) into the C-type locking tube (103) to connect the two steel pipe pile bodies (101) together until the steel pipe pile body (101) is inserted into place; S2: After the water is in place, the water in the lake will enter the water inlet hole (105), and will enter the water accumulation hole (104) after being filtered through the filter screen (106), thereby preventing impurities in the water from entering the water accumulation hole (104). Since the pressure inside the water accumulation hole (104) is lower than the pressure in the external water environment, the water will continue to enter the water accumulation hole (104); S3: As the amount of water in the water accumulation hole (104) increases, the water will come into contact with the hollow tube (107). Since the water in large rivers is deep and the length of the steel pipe pile body (101) is long, the pressure in the water will increase, and the buoyancy will increase. After the hollow tube (107) comes into contact with the water, it will be affected by the large buoyancy and will rise.

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