Engineering movable pile tip

Abstract

The utility model discloses an engineering movable pile tip which is characterized in that a supporting column is rotationally connected in a pile tip body, telescopic blocks are uniformly distributed on the periphery of the supporting column, and the telescopic blocks stretch out and draw back inside and outside in a telescopic opening formed in the pile tip body through a driving assembly; the driving assembly comprises telescopic control plates fixed to the periphery of the supporting column, telescopic shifting grooves are formed in the telescopic control plates, hinge pins are fixed to the telescopic blocks, the hinge pins are slidably connected to the telescopic shifting grooves, a middle plate is arranged between the telescopic control plates and fixed to the inner wall of the pile tip body, and the telescopic blocks are slidably arranged in limiting grooves formed in the middle plate. The telescopic pile tip has the advantages that the supporting column is rotated to enable the telescopic control plate to drive the telescopic block to stretch out of the side face of the pile tip body through the pin shaft, the steel protection pipe is supported, after the steel protection pipe sinks in place, the supporting column is reversely rotated to enable the telescopic block to retract into the pile tip body, the pile tip body can be lifted out of the steel protection pipe, the pile tip body can be repeatedly used, and the cost is reduced. And therefore, the construction cost of building pile-making engineering operation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field related to building construction, in particular to an engineering movable pile tip. Background Art

[0002] During construction pile construction, the lower end of a steel protective tube is inserted into the pile tip, with the bottom of the tube fitting snugly against the top of the pile tip. A pile driver or other equipment then strikes the steel protective tube, applying its weight and impact force to the pile tip, causing it and the pile tip to sink together, completing the foundation construction of the construction pile construction project. Although this construction method prevents mud from entering the steel protective tube during the driving process, once the pile tip is driven in, the bottom of the steel protective tube abuts against the pile tip, making it impossible to remove the pile tip and making it difficult to reuse, resulting in high construction costs for construction pile construction projects. Utility Model Content

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide an engineering movable pile tip to solve the problem that in construction pile making engineering operations, after the pile tip is driven in, the bottom of the steel protective tube abuts against the pile tip, resulting in the pile tip being unable to be removed and difficult to reuse, thereby leading to high construction costs for construction pile making engineering operations.

[0004] The technical solution adopted by the present invention to achieve the above-mentioned purpose is:

[0005] An engineering movable pile tip comprises a pile tip body, wherein a support column is rotatably connected to the pile tip body, and the support column is rotated by a rotating connector installed thereon;

[0006] At least two telescopic blocks are evenly distributed on the outer circumference of the support column, and a telescopic opening corresponding to the telescopic block is opened on the side of the pile tip body. The telescopic block is telescoped in and out of the telescopic opening by a driving assembly;

[0007] The driving assembly includes two telescopic control plates fixedly sleeved on the outer periphery of the support column, the telescopic control plates are provided with telescopic displacement grooves corresponding to the telescopic blocks, the telescopic displacement grooves are eccentrically arc-shaped, with one end close to the support column and the other end away from the support column, a pin shaft is fixedly passed through the telescopic block, and the upper and lower ends of the pin shaft are slidably connected to the telescopic displacement grooves of the telescopic control plates at the corresponding ends, an intermediate plate is provided between the two telescopic control plates, the intermediate plate is fixed on the inner wall of the pile tip body, a limiting groove is provided on the side of the intermediate plate, and the telescopic block is slidably arranged in the limiting groove;

[0008] The support column is connected with a rotary connector, and the support column drives the telescopic control plate to rotate through the rotary connector. The telescopic shift slot on the telescopic control plate drives the telescopic block to telescope in and out of the telescopic opening through the pin shaft.

[0009] The upper portion of the pile tip body is cylindrical, and the lower portion is in the shape of a pointed cone. The telescopic opening is arranged in the cylindrical portion of the pile tip body.

[0010] A steel tip is fixed at the bottom of the pile tip body, and the bottom of the steel tip is in a pointed cone shape.

[0011] A support plate is fixedly sleeved on the outer periphery of the support column. The support plate is placed on the top surface of the pile tip body. The support column is supported on the pile tip body through the support plate.

[0012] An L-shaped groove is provided on the inner wall of the rotary connector, and a locking block corresponding to the L-shaped groove is fixed on the outer periphery of the support column, and the locking block is clamped on the L-shaped groove.

[0013] The utility model is characterized in that: through the arrangement of the support column, the telescopic control plate and the telescopic block, the support column is rotated so that the telescopic control plate drives the telescopic block to extend from the side of the pile tip body through the pin shaft, thereby supporting the steel protective pipe; after the steel protective pipe is sunk into place, the support column is rotated in the opposite direction so that the telescopic block is retracted into the pile tip body, and the pile tip body can be lifted out from the inside of the steel protective pipe. The pile tip body can be reused, thereby reducing the construction cost of the construction pile making operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a front cross-sectional view of the support column of the present invention;

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the rotary connector of the present invention;

[0017] Figure 4 It is a top cross-sectional view of the telescopic block of the utility model;

[0018] Figure 5 This is a top view of the middle plate of the present invention;

[0019] Figure 6 This is a top view of the telescopic control panel of the present utility model;

[0020] Figure 7 This is a schematic diagram of the use process of the utility model.

[0021] Among them: 1. Pile tip body; 2. Support plate; 3. Support column; 4. Steel protective pipe; 5. Drive assembly; 6. Telescopic control panel; 7. Telescopic shift slot; 8. Pin shaft; 9. Middle plate; 10. Telescopic block; 11. Locking block; 12. Rotating connector; 13. L-shaped slot; 14. Steel tip 15. Limit slot 16. Telescopic opening. DETAILED DESCRIPTION

[0022] like Figure 1-7 As shown, the utility model is an engineering movable pile tip, including a pile tip body 1. The outer diameter of the pile tip body 1 is smaller than the inner diameter of the steel protective tube 4. The upper part of the pile tip body 1 is cylindrical and the lower part is conical, which is convenient for being placed in the steel protective tube 4 and easy to sink into the construction site. A plurality of steel tips 14 are fixed to the bottom of the pile tip body 1. The steel tips 14 shear obstacles during the sinking process, thereby reducing the wear of the pile tip body 1 and facilitating the smooth sinking of the steel protective tube 4.

[0023] The support column 3 is rotatably connected to the pile tip body 1, and the support column 3 is controlled to rotate by a rotating connection piece 12 installed thereon. The inner wall of the rotating connection piece 12 is provided with an L-shaped groove 13, and a locking block 11 is fixed on the circumferential surface of the support column 3 near the top position. The locking block 11 is clamped in the horizontal section of the L-shaped groove 13, thereby realizing the connection between the rotating connection piece 12 and the support column 3. After the connection, the support column 3 can be driven to rotate by the rotating connection piece 12.

[0024] At least two telescopic blocks 10 are evenly distributed on the outer circumference of the support column 3. The telescopic blocks are located in the pile tip body 1. Preferably, the number of the telescopic blocks 10 is 4, so that the telescopic blocks 10 can support the steel protective pipe 4 more stably. A telescopic opening 16 corresponding to the telescopic block 10 is opened on the side of the pile tip body 1. The telescopic block 10 can be extended and retracted in and out of the telescopic opening 16 by the driving component 5 to achieve the change of the outer diameter of the pile tip body 1.

[0025] The driving assembly 5 includes two telescopic control plates 6 fixedly sleeved on the outer periphery of the support column 3, and the telescopic control plate 6 is provided with a telescopic displacement groove 7 corresponding to the telescopic block 10. The telescopic displacement groove 7 is eccentrically arc-shaped, with one end close to the support column 3 and the other end away from the support column 3. A pin 8 is fixedly passed through the telescopic block 10, and the upper and lower ends of the pin 8 are respectively slidably connected to the telescopic displacement groove 7 of the telescopic control plate 6 at the corresponding end. An intermediate plate 9 is provided between the two telescopic control plates 6, and the intermediate plate 9 is fixed on the inner wall of the pile tip body 1. The support column 3 passes through the intermediate plate 9, and there is a gap between the two. Not connected, a limiting groove 15 is provided on the side of the intermediate plate 9, and the telescopic block 10 is slidably set in the limiting groove 15. The support column 3 drives the telescopic control plate 6 to rotate through the rotating connection 12, and the telescopic shift groove 7 on the telescopic control plate 6 drives the telescopic block 10 to extend and retract in and out of the telescopic opening 16 through the pin shaft 8. When the telescopic block 10 extends out of the pile tip body 1, the overall outer diameter of the pile tip body 1 is larger than the inner diameter of the steel protective tube 4, and the steel protective tube 4 can be supported on the top surface of the telescopic block 10. When the telescopic block 10 is retracted to the pile tip body 1, the outer diameter of the pile tip body 1 is smaller than the inner diameter of the steel protective tube 4, and the pile tip body 1 can be taken out from the steel protective tube 4.

[0026] When the pile tip is lifted, the pile body 1 is supported by objects such as soil, and the supporting column 3 is rotated to drive the telescopic control plate 6 to rotate, that is, to drive the telescopic displacement groove 7 to rotate. Due to the eccentric arc setting of the telescopic displacement groove 7, one side of the inner wall of the telescopic displacement groove 7 squeezes the pin shaft 8, so that the pin shaft 8 drives the telescopic block 10 to move along the inner wall of the limiting groove 15 on the middle plate 9, so that the telescopic block 10 extends from the telescopic opening 16 to the outside of the pile tip body 1, thereby increasing the overall outer diameter of the pile tip body 1. After extending, the steel protective pipe 4 is lifted to the pile tip body 1, and the bottom of the steel protective pipe 4 is fitted with the top of the telescopic block 10. At this time, the steel protective pipe 4 is sleeved on the pile tip body 1, and then the pile driver is used to hit the top of the steel protective pipe 4. The gravity and impact force of the steel protective pipe 4 act on the pile tip body 1, so that the steel protective pipe 4 and the pile tip body 1 sink together. After being put into place, the rotating connector 12 is hoisted into the steel protective tube 4, and the rotating connector 12 is moved down to insert the locking block 11 into the vertical section of the L-shaped groove 13. Then, the rotating connector 12 is driven to rotate by the rotary drill, and the rotating connector 12 drives the supporting column 3 to rotate in the opposite direction through the locking block 11. The supporting column 3 drives the telescopic control plate 6 to rotate in the opposite direction, that is, drives the telescopic shift groove 7 to rotate in the opposite direction, so that the other side of the inner wall of the telescopic shift groove 7 squeezes the pin shaft 8, so that the pin shaft 8 drives the telescopic block 10 to move in the opposite direction along the inner wall of the upper limit groove 15 of the intermediate plate 9, so that the telescopic block 10 is retracted into the pile tip body 1, and the telescopic block 10 is separated from the bottom of the steel protective tube 4. After separation, the pile tip body 1 is hoisted out of the steel protective tube 4. After hoisting out, the pile tip body 1 can be moved to the next pile position and the above steps are repeated for continued use. The pile tip body 1 can be reused, thereby reducing the construction cost of the construction pile making engineering operation.

[0027] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed in the present invention can make equivalent replacements or changes based on the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An engineering movable pile tip, characterized by: The pile tip body comprises a cylindrical upper portion and a pointed cone-shaped lower portion, wherein the pile tip body is rotatably connected to a support column, and the support column rotates through a rotating connection installed thereon; at least two telescopic blocks are evenly distributed on the periphery of the support column, and a telescopic opening corresponding to the telescopic block is opened on the side of the pile tip body, and the telescopic opening is opened in the cylindrical portion of the pile tip body, and the telescopic block is telescoped in and out of the telescopic opening by a driving assembly; the driving assembly comprises two telescopic control plates arranged up and down on the periphery of the support column, and the telescopic control plates are opened with telescopic displacement slots corresponding to the telescopic blocks, and the telescopic The shift groove is eccentrically arc-shaped, with one end close to the support column and the other end away from the support column. A pin shaft is fixed on the telescopic block, and the upper and lower ends of the pin shaft are respectively slidably connected to the telescopic shift groove of the telescopic control plate at the corresponding ends. An intermediate plate is provided between the two telescopic control plates, and the intermediate plate is fixed on the inner wall of the pile tip body. A limiting groove is provided on the side of the intermediate plate, and the telescopic block is slidably set in the limiting groove; the support column is connected to a rotating connecting piece, and the support column drives the telescopic control plate to rotate through the rotating connecting piece, and the telescopic shift groove on the telescopic control plate drives the telescopic block to extend and retract in and out of the telescopic opening through the pin shaft.

2. The engineering movable pile tip according to claim 1, characterized in that: A steel tip is fixed at the bottom of the pile tip body, and the bottom of the steel tip is in a pointed cone shape.

3. The engineering movable pile tip according to claim 1, characterized in that: A support plate is fixedly sleeved on the outer periphery of the support column. The support plate is placed on the top surface of the pile tip body. The support column is supported on the pile tip body through the support plate.

4. The engineering movable pile tip according to claim 1, characterized in that: An L-shaped groove is provided on the inner wall of the rotary connector, and a locking block corresponding to the L-shaped groove is fixed on the outer periphery of the support column, and the locking block is clamped on the L-shaped groove.

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