Pile splicing device for CFG piles

Abstract

The utility model discloses a pile splicing device of a CFG pile, which relates to the technical field of engineering construction equipment, and comprises a first semicircular cylinder and a second semicircular cylinder, the back of the first semicircular cylinder is rotatably connected with the second semicircular cylinder, the front of the first semicircular cylinder is fixedly connected with an L-shaped block, the front of the second semicircular cylinder is fixedly connected with a connecting block, and the L-shaped block is fixedly connected with the connecting block. The first semicircular cylinder is connected with the connecting block in a clamped mode through a fixing mechanism, a protective sleeve is connected to the outer side of the L-shaped block in an inserted mode, and positioning mechanisms are arranged on the inner side of the first semicircular cylinder and the inner side of the second semicircular cylinder. By the adoption of the structure, after pile splicing concrete is solidified, the pull handle is pulled to drive the movable plate clamping block connected with the pull rod through the pull plate to be separated from the connecting block, then the movable plate clamping block can be taken down from the solidified pile splicing column, and therefore the device can be conveniently and rapidly disassembled and used before and after pile splicing.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering construction equipment, and particularly relates to a pile splicing device for CFG piles. Background Technique

[0002] When CFG piles are used for engineering foundation treatment, after the CFG piles are constructed and reach the age, according to the design requirements, 500 mm thick soil between piles needs to be excavated and the piles need to be cut by 500 mm. Since CFG piles are plain concrete and the distance between piles is small, it is easy to break the CFG piles when a small excavator cooperates with manual excavation of the soil between piles, resulting in the phenomenon of shallow pile shaft fracture, and the effective pile shaft length cannot meet the design requirements. At this time, pile splicing is required. The traditional method is to use a circular corrugated pipe with a diameter 200 mm larger than the designed pile diameter. After the pile shaft is roughened and cleaned, the pile splicing corrugated pipe is sleeved on the CFG pile, and the lower part overlaps the CFG pile by 100 mm in height. The position of the corrugated pipe is adjusted to make the center of the circular corrugated pipe coincide with the center of the CFG pile. After fixing the position, concrete is poured. After the concrete is poured, the corrugated pipe cannot be removed and cannot be recycled. During the vibration process of concrete pouring, the corrugated pipe will be displaced, resulting in the non - coincidence of the center of the spliced pile and the center of the CFG pile. The corrugated pipe is light in weight and easy to float, resulting in the outflow of the bottom concrete.

[0003] Chinese Patent with publication number CN217500190U discloses a pile splicing device for CFG piles, which includes a left semi - cylinder and a right semi - cylinder symmetrically arranged above the CFG pile. One end of connection between the left semi - cylinder and the right semi - cylinder is hinged through a hinge mechanism, and the other end is connected through a locking mechanism. The hinge mechanism includes sleeves alternately arranged and fixed on the connecting ends of the left semi - cylinder and the right semi - cylinder, and a fixed shaft is arranged in the middle of the sleeve. The locking mechanism includes collar rings arranged at the same horizontal position on the outer sides of the other ends of the left semi - cylinder and the right semi - cylinder. A connecting bolt can pass through between the collar rings, and the connecting bolt is screwed with a connecting nut for locking.

[0004] However, in the actual application process of the above - mentioned existing pile splicing device, we still found that there are still some deficiencies. For example, the left semi - cylinder and the right semi - cylinder rotate on one side, and the other side is connected and fixed by screwing a connecting bolt with a connecting nut. Since the device can be used repeatedly, this traditional connection method often requires tools to connect the left semi - cylinder and the right semi - cylinder during disassembly and assembly, and the disassembly and assembly are not convenient enough. Secondly, six equally - spaced positioning bolts on the cylinder are used to position the pile head. However, after the concrete solidifies, since the entire threaded part of the positioning bolt needs to be taken out, and the concrete solidifies in the thread groove of the positioning bolt, the disassembly and assembly are time - consuming and laborious. Summary of the Utility Model

[0005] In view of the problems mentioned in the background art, the purpose of the present utility model is to provide a pile splicing device for CFG piles to solve the problems mentioned in the above background art.

[0006] The above technical purpose of the present utility model is achieved through the following technical solutions:

[0007] A pile splicing device for CFG piles includes a first semi-cylindrical barrel and a second semi-cylindrical barrel. The back of the first semi-cylindrical barrel is rotatably connected to the second semi-cylindrical barrel. A L-shaped block is fixedly connected to the front of the first semi-cylindrical barrel, and a connecting block is fixedly connected to the front of the second semi-cylindrical barrel. The first semi-cylindrical barrel is clamped with the connecting block through a fixing mechanism. A sheath is inserted on the outer side of the L-shaped block, and positioning mechanisms are provided on the inner sides of the first semi-cylindrical barrel and the second semi-cylindrical barrel;

[0008] The fixing mechanism includes an assembly cavity which is opened on the inner side of the L-shaped block. A movable plate is slidably connected to the inner side of the assembly cavity. Clamping blocks are symmetrically and fixedly installed on one side of the movable plate. The clamping ends of the clamping blocks movably penetrate through the cavity wall of the assembly cavity and are clamped with the connecting block. Pull rods are symmetrically and fixedly connected to the side of the movable plate away from the clamping blocks. Springs are sleeved on the ends of the pull rods close to the movable plate. The other ends of the pull rods away from the movable plate slidably penetrate through the cavity wall of the assembly cavity and are fixedly installed on the same pulling plate. A pulling handle is fixedly installed on the side of the pulling plate away from the pull rods. Through the fixing mechanism, it is convenient to quickly disassemble and assemble the first semi-cylindrical barrel and the second semi-cylindrical barrel for use;

[0009] The positioning mechanism includes a positioning rod and a threaded hole. The threaded hole is opened on the outer sides of the first semi-cylindrical barrel and the second semi-cylindrical barrel. One end of the positioning rod is fixedly connected with a stud. One end of the stud away from the positioning rod is fixedly connected with a hexagonal block. One end of the hexagonal block away from the stud is fixedly connected with a pulling block. The stud is threadedly connected inside the threaded hole. Through the positioning mechanism, while meeting the positioning of the pile splicing pile head, it is convenient for subsequent disassembly.

[0010] As a preferred technical solution, a dovetail groove is opened at the upper end of the L-shaped block. The back of the sheath is inserted into the dovetail groove, and a handle is fixedly installed on the front of the sheath. Through the dovetail groove, it is convenient to insert and install the sheath.

[0011] As a preferred technical solution, a cutting groove is opened at one end of the orifice of the threaded hole, and one end of the hexagonal block is arranged inside the cutting groove. Through the cutting groove, it is convenient to make one end of the hexagonal block be on the plane of the cutting groove.

[0012] As a preferred technical solution, a pulling hole is opened inside the pulling block, and the shape of the hole of the pulling hole is circular. Through the pulling hole, it is convenient to quickly take out the positioning rod through the pulling block.

[0013] As a preferred technical solution, limiting grooves are symmetrically provided on the inner side of the assembly cavity, and the ends of the movable plate are slidably connected to the inner side of the limiting grooves. The limiting grooves can facilitate the sliding of the movable plate on the inner side of the assembly cavity.

[0014] As a preferred technical solution, a card slot is provided on one side of the connection block facing the card block, and the card-in end of the card block is card-engaged with the card slot. Through the card slot, the card block can be conveniently card-engaged and fixed to the connection block.

[0015] As a preferred technical solution, the right side of the card block's insertion end is inclined, and the handle is U-shaped. The inclined surface of the card block's insertion end facilitates the connection of the connecting block and the L-shaped block.

[0016] In summary, the utility model mainly has the following beneficial effects:

[0017] First, due to the rotation of the back sides of the first semi-cylinder and the second semi-cylinder, the first semi-cylinder is turned over at the second semi-cylinder, so that the connecting block on the first semi-cylinder presses the clamping end of the clamping block, and the connecting block presses the inclined surface of the clamping block. At the same time, the movable plate connected to the clamping block slides in the assembly cavity to compress the spring. When the clamping end of the clamping block corresponds to the clamping position of the connecting block, the spring elastically resets and pushes the clamping block connected to the movable plate to clamp and fix the connecting block. At this time, the first semi-cylinder and the second semi-cylinder are combined into a complete cylinder. After the pile-connecting concrete solidifies, the pull handle is pulled so that the pull handle drives the movable plate clamping block connected to the pull rod through the pull plate to separate from the connecting block, and then it can be removed from the solidified pile-connecting column, so that the device can be quickly disassembled and assembled before and after the pile connection.

[0018] Secondly, tools can be used to conveniently connect the connecting stud on the hexagonal block to the screw hole of the first semi-cylinder or the second semi-cylinder through threads, and the other end of the connected stud is pressed against the pile head through the positioning rod, so that the cylinder can be positioned at the periphery of the pile head to be connected. When the pile connection is completed, it is only necessary to operate the hexagonal block with tools to make the stud disengage from the screw hole. At this time, a screwdriver can be inserted into the pulling block to pull out the positioning rod, so that the positioning column can be quickly removed after the pile connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is an exploded view of the utility model;

[0021] Figure 3 The utility model Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 It is a schematic diagram of the internal structure of the L-shaped block of the utility model.

[0023] Reference numerals: 1, first semi-cylindrical tube; 2, second semi-cylindrical tube; 3, positioning mechanism; 301, positioning rod; 302, hexagonal block; 303, pulling block; 304, stud; 305, screw hole; 4, connecting block; 5, L-shaped block; 6, sheath; 7, handle; 8, cutting groove; 9, pulling hole; 10, clamping groove; 11, fixing mechanism; 111, assembly cavity; 112, clamping block; 113, movable plate; 114, pull rod; 115, spring; 116, pulling plate; 117, pulling handle; 12, dovetail groove; 13, limiting groove. Detailed implementation manners

[0024] Refer to Figures 1 to 4 , a pile splicing device for CFG piles according to this embodiment includes a first semi-cylindrical tube 1 and a second semi-cylindrical tube 2. The back surface of the first semi-cylindrical tube 1 is rotatably connected to the second semi-cylindrical tube 2. The front surface of the first semi-cylindrical tube 1 is fixedly connected with an L-shaped block 5, and the front surface of the second semi-cylindrical tube 2 is fixedly connected with a connecting block 4. The first semi-cylindrical tube 1 is clamped to the connecting block 4 through a fixing mechanism 11. A sheath 6 is inserted on the outer side of the L-shaped block 5. Positioning mechanisms 3 are provided on the inner sides of both the first semi-cylindrical tube 1 and the second semi-cylindrical tube 2. During the construction process, a layer of film can be added inside the combined first semi-cylindrical tube 1 and second semi-cylindrical tube 2, which can, to a certain extent, reduce the loss of concrete through the gaps;

[0025] The fixing mechanism 11 includes an assembly cavity 111, which is opened on the inner side of the L-shaped block 5. A movable plate 113 is slidably connected to the inner side of the assembly cavity 111. On one side of the movable plate 113, clamping blocks 112 are symmetrically and fixedly installed. The clamping ends of the clamping blocks 112 movably penetrate through the cavity wall of the assembly cavity 111 and are clamped with the connecting block 4. On the side of the movable plate 113 away from the clamping blocks 112, pull rods 114 are symmetrically and fixedly connected. A spring 115 is sleeved on the end of the pull rod 114 close to the movable plate 113. The other end of the pull rod 114 away from the movable plate 113 slidably penetrates through the cavity wall of the assembly cavity 111 and is fixedly installed with the same pull plate 116. A pull handle 117 is fixedly installed on the side of the pull plate 116 away from the pull rod 114. When the first semi-cylindrical barrel 1 and the second semi-cylindrical barrel 2 are combined and installed into a cylindrical barrel, since the backs of the first semi-cylindrical barrel 1 and the second semi-cylindrical barrel 2 rotate, the first semi-cylindrical barrel 1 is flipped at the second semi-cylindrical barrel 2, so that the connecting block 4 on the first semi-cylindrical barrel 1 presses against the clamping end of the clamping block 112, and the connecting block 4 presses against the inclined surface part of the clamping block 112. At the same time, the movable plate 113 connected to the clamping block 112 slides in the assembly cavity 111 and compresses the spring 115. When the clamping end of the clamping block 112 corresponds to the clamping position of the connecting block 4, the spring 115 elastically resets and pushes the clamping block 112 connected to the movable plate 113 to clamp and fix the connecting block 4. At this time, the first semi-cylindrical barrel 1 and the second semi-cylindrical barrel 2 are combined into a complete cylindrical barrel. After the pile-connecting concrete solidifies, pulling the pull handle 117 causes the pull handle 117 to drive the movable plate 113 and the clamping block 112 connected to the pull rod 114 to separate from the connecting block 4 through the pull plate 116, and then it can be removed from the solidified pile-connecting column, so that the device can be quickly disassembled and assembled before and after pile connection for use; a clamping groove 10 is opened on the side of the connecting block 4 facing the clamping block 112, and the clamping end of the clamping block 112 is clamped with the clamping groove 10. By using the clamping groove 10 on the connecting block 4, the clamping end of the clamping block 112 can be conveniently clamped and fixed with the connecting block 4; the right side of the clamping end of the clamping block 112 is in an inclined shape, and the shape of the pull handle 117 is in a U shape. By using the inclined surface part of the clamping end of the clamping block 112, the clamping block 112 can be conveniently clamped and fixed with the connecting block 4; on one side of the inner wall of the assembly cavity 111, there is also a rectangular hole suitable for the sliding extension of the clamping block 112, and a sliding hole suitable for the sliding extension of the pull rod 114;

[0026] The positioning mechanism 3 includes a positioning rod 301 and a threaded hole 305. The threaded hole 305 is opened on the outer sides of the first semi-cylinder 1 and the second semi-cylinder 2. One end of the positioning rod 301 is fixedly connected with a stud 304. The end of the stud 304 away from the positioning rod 301 is fixedly connected with a hexagonal block 302. The end of the hexagonal block 302 away from the stud 304 is fixedly connected with a pulling block 303. The stud 304 is threadedly connected inside the threaded hole 305. It is convenient to threadedly connect the stud 304 connected to the hexagonal block 302 through a tool at the threaded hole 305 of the first semi-cylinder 1 or the second semi-cylinder 2. And the other end of the connected stud 304 abuts against the pile connection head through the positioning rod 301, so that the cylinder body can be positioned around the pile connection head to be connected. When the pile connection is completed, only need to operate the hexagonal block 302 part through a tool to make the stud 304 disengage from the threaded hole 305. At this time, insert a screwdriver into the pulling block 303, then the positioning rod 301 can be pulled out, so that the positioning column can be quickly removed after the pile connection; the diameter of the stud 304 is larger than the diameter of the positioning rod 301, so that one end of the positioning rod 301 of the stud 304 can smoothly pass through the threaded hole 305.

[0027] Reference Figure 3 , a dovetail groove 12 is opened at the upper end of the L-shaped block 5. The back of the sheath 6 is inserted into the dovetail groove 12. The front of the sheath 6 is fixedly installed with a handle 7. By using the dovetail groove 12 on the L-shaped block 5, it is convenient to insert the sheath 6 with the handle 7 from top to bottom on the L-shaped block 5 to protect the pull handle 117 of the fixing mechanism 11, avoiding tools touching the pull handle 117 during the construction stage and affecting the use of the cylinder body; a dovetail block suitable for being inserted into the dovetail groove 12 is also opened on the back of the sheath 6, so that the sheath 6 can be inserted on the L-shaped block 5.

[0028] Reference Figure 2 , a cut groove 8 is opened at one end of the orifice of the threaded hole 305. One end of the hexagonal block 302 is arranged inside the cut groove 8. By using the cut groove 8 at the threaded hole 305, it is convenient for one end of the hexagonal block 302 close to the stud 304 to be at the plane of the cut groove 8 during the positioning process. In this way, it is not easily affected by the arc of the cylinder body and has better stability; in the subsequent additional design, we make a circular stop block at one end of the hexagonal block 302 close to the cut groove 8, which can prevent the operating end of the wrench from disengaging from the hexagonal block 302 when using the wrench.

[0029] Reference Figure 2 , a pull hole 9 is opened inside the pulling block 303. The shape of the hole of the pull hole 9 is circular. By using the pull hole 9 on the pulling block 303, it is convenient to pull out the positioning rod 301 by inserting a screwdriver into the pull hole 9 after the stud 304 disengages from the threaded hole 305; the inner wall of the pull hole 9 is also provided with an arc treatment, and a rope can also be passed through to pull the pulling block 303 for operation, and the rope is not easily cut.

[0030] Reference Figure 4 On the inner side of the assembly cavity 111, limiting grooves 13 are symmetrically formed. The end of the movable plate 113 is slidably connected to the inner side of the limiting groove 13. By sliding the movable plate 113 at the limiting groove 13 on the inner side of the assembly cavity 111, the stability of the movable plate 113 can be improved. A limiting block adapted to slide in the limiting groove 13 is further provided at the end of the movable plate 113, facilitating the limiting and sliding of the end of the movable plate 113 in the limiting groove 13.

[0031] Principle and advantages of use: During use, when the first semi-cylinder 1 and the second semi-cylinder 2 are combined and installed into a cylindrical tube, since the backs of the first semi-cylinder 1 and the second semi-cylinder 2 rotate, the first semi-cylinder 1 is flipped at the second semi-cylinder 2, so that the connecting block 4 on the first semi-cylinder 1 presses the inserting end of the latch block 112, and the connecting block 4 presses the inclined surface part of the latch block 112. At the same time, the movable plate 113 connected to the latch block 112 slides in the assembly cavity 111 to compress the spring 115. When the inserting end of the latch block 112 corresponds to the positioning position of the connecting block 4, the spring 115 elastically resets to push the latch block 112 connected to the movable plate 113 to latch and fix the connecting block 4. At this time, the first semi-cylinder 1 and the second semi-cylinder 2 are combined into a complete cylindrical tube. After the pile connection concrete solidifies, pulling the pull handle 117 causes the pull handle 117 to drive the latch block 112 of the movable plate 113 connected by the pull plate 116 to separate from the connecting block 4 through the pull rod 114, and then it can be removed from the solidified pile connection column.

[0032] During pile connection, when the cylindrical tube is sleeved on the pile head, it can be conveniently connected by screwing the connecting stud 304 on the hexagonal block 302 into the screw hole 305 of the first semi-cylinder 1 or the second semi-cylinder 2 by using a tool. The other end of the connected stud 304 abuts against the pile connection pile head through the positioning rod 301, and the cylindrical tube can be positioned around the pile head to be connected. After the pile connection is completed, only by operating the hexagonal block 302 part with a tool to make the stud 304 come out of the screw hole 305, and then inserting a screwdriver into the pull block 303, the positioning rod 301 can be pulled out.

Claims

1. A CFG pile connection device, comprising a first semi-cylinder (1) and a second semi-cylinder (2), characterized in that: The back side of the first semi-cylinder (1) is rotatably connected to the second semi-cylinder (2); the front side of the first semi-cylinder (1) is fixedly connected to an L-shaped block (5); the front side of the second semi-cylinder (2) is fixedly connected to a connecting block (4); the first semi-cylinder (1) is clamped with the connecting block (4) via a fixing mechanism (11); a sheath (6) is inserted on the outer side of the L-shaped block (5); and positioning mechanisms (3) are provided on the inner sides of both the first semi-cylinder (1) and the second semi-cylinder (2); The fixing mechanism (11) comprises an assembly cavity (111), wherein the assembly cavity (111) is arranged on the inner side of the L-shaped block (5), and a movable plate (113) is slidably connected to the inner side of the assembly cavity (111), and a clamping block (112) is symmetrically fixedly installed on one side of the movable plate (113), and the clamping end of the clamping block (112) movably penetrates the cavity wall of the assembly cavity (111) and is clamped with the connecting block (4), and a pull rod (114) is symmetrically fixedly connected to the side of the movable plate (113) away from the clamping block (112), and a spring (115) is sleeved on one end of the pull rod (114) close to the movable plate (113), and the other end of the pull rod (114) away from the movable plate (113) slides through the cavity wall of the assembly cavity (111) and is fixedly installed with the same pull plate (116), and a pull handle (117) is fixedly installed on the side of the pull plate (116) away from the pull rod (114); The positioning mechanism (3) comprises a positioning rod (301) and a screw hole (305), wherein the screw hole (305) is provided on the outside of the first semi-cylinder (1) and the second semi-cylinder (2), one end of the positioning rod (301) is fixedly connected to a stud (304), one end of the stud (304) away from the positioning rod (301) is fixedly connected to a hexagonal block (302), one end of the hexagonal block (302) away from the stud (304) is fixedly connected to a pull block (303), and the stud (304) is threadedly connected to the inside of the screw hole (305).

2. A CFG pile connection device according to claim 1, characterized in that: A dovetail groove (12) is provided at the upper end of the L-shaped block (5), the back side of the protective sleeve (6) is plugged into the dovetail groove (12), and a handle (7) is fixedly mounted on the front side of the protective sleeve (6).

3. The CFG pile connection device according to claim 1, characterized in that: A slot (8) is provided at one end of the opening of the screw hole (305), and one end of the hexagonal block (302) is arranged inside the slot (8).

4. The CFG pile connection device according to claim 1, characterized in that: A pulling hole (9) is provided on the inner side of the pulling block (303), and the pulling hole (9) is circular in shape.

5. The CFG pile connection device according to claim 1, characterized in that: The inner side of the assembly cavity (111) is symmetrically provided with a limiting groove (13), and the end of the movable plate (113) is slidably connected to the inner side of the limiting groove (13).

6. The CFG pile connection device according to claim 1, characterized in that: A card slot (10) is provided on one side of the connection block (4) facing the card block (112), and a card-in end of the card block (112) is card-engaged with the card slot (10).

7. The CFG pile connection device according to claim 1, characterized in that: The right side of the clamping end of the clamping block (112) is in the shape of an inclined surface, and the pull handle (117) is in the shape of a U.

Images