Precast concrete solid square pile hammering construction buffering device

Abstract

The utility model relates to the technical field of constructional engineering, in particular to a precast concrete solid square pile hammering construction buffering device which comprises a connecting column, a pile cushion mechanism, a buffering spring, an anti-rebound mechanism and an unlocking mechanism. A connecting cylinder is arranged at the bottom end of the connecting column and used for connecting the buffering device and the solid square pile. The pile cushion mechanism is detachably arranged above the connecting column; one end of each buffer spring is connected with the corresponding connecting column, and the other end of each buffer spring is connected with the corresponding pile cushion mechanism; the multiple sets of anti-rebound mechanisms are arranged in the connecting column, and one end of each anti-rebound mechanism makes contact with the pile cushion mechanism. The unlocking mechanism is arranged in the connecting column, and one end of the unlocking mechanism penetrates through the pile cushion mechanism. Through the arrangement of the anti-springback mechanism, the limiting plate is inserted into the limiting groove of the connecting rod under the action of the reset spring, so that springback of the buffer spring is avoided, and the stability and the buffer effect of the buffer device are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a buffer device for hammering construction of precast concrete solid square piles. Background Art

[0002] Precast concrete solid square piles are widely used in construction engineering. Their high bearing capacity, low overall cost, reliable quality, and strong lateral force resistance make them a popular pile type for high-rise building foundations. Precast concrete solid square piles are often driven by hammering and connected by welding. However, the widespread use of heavy hammers during construction makes the quality of pile joint welds extremely difficult to control, leading to frequent quality issues such as pile head damage and weld cracking. Therefore, to effectively protect the integrity of the pile shaft and the quality of the joint welds during pile driving, pile pads are required to cushion the impact of the hammer.

[0003] Chinese patent publication number CN216041172U discloses a buffering device for hammering precast concrete solid square piles. The device comprises a pile pad body and a pile head embedded component. The pile pad body comprises a steel rod, a steel plate, and a flexible layer. The steel rod is fixed to one side of the steel plate and passes through a reserved hole in the flexible layer to connect to the steel plate. The pile head embedded component comprises a pile head end plate and a guide rail. The guide rail is embedded in the precast concrete solid square pile. The pile head end plate is arranged at the upper end of the precast concrete solid square pile. The upper end of the guide rail is fixed to the reserved hole in the pile head end plate. During hammering, the steel rod is inserted into the guide rail hole. A spring is provided at the bottom of the guide rail. This device achieves the fixation and rapid rebound of the pile pad during hammering of precast concrete solid square piles, improving work efficiency and more effectively buffering the impact force of the pile hammer. It is also simple to operate, highly resistant to hammering, has a low failure rate, and the flexible layer is easy to replace and maintain.

[0004] However, the above technical solution has the following shortcomings: when the pile hammer is lifted, the steel rod lifts the pile pad body under the action of the spring, and the spring is prone to rebound, resulting in poor stability of the buffer device, which not only affects the buffering effect but also affects the subsequent hammering operation. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and proposes a buffer device for hammering construction of precast concrete solid square piles.

[0006] The technical solution of the utility model is a buffer device for hammering construction of precast concrete solid square piles, comprising:

[0007] A connecting column, the bottom end of which is provided with a connecting tube for connecting the buffer device and the solid square pile;

[0008] A pile pad mechanism is detachably arranged above the connecting column;

[0009] A plurality of buffer springs are provided, one end of the buffer spring is connected to the connecting column, and the other end of the buffer spring is connected to the pile pad mechanism;

[0010] The anti-rebound mechanism is provided in multiple groups, and the anti-rebound mechanism is arranged in the connecting column, and one end of the anti-rebound mechanism contacts the pile pad mechanism;

[0011] The unlocking mechanism is arranged in the connecting column, one end of the unlocking mechanism passes through the pile pad mechanism and extends to the outside of the pile pad mechanism, and the action end of the unlocking mechanism is transmission-connected to the anti-rebound mechanism.

[0012] Preferably, a plurality of mounting grooves are provided on the surface of the connecting column, the buffer spring is arranged in the mounting groove, and one end of the buffer spring is connected to the mounting groove.

[0013] Preferably, the pile pad mechanism includes a buffer pad, a steel plate and a connecting rod; the buffer pad is penetrated with a plurality of movable holes, the steel plate is detachably connected to the buffer pad, a plurality of connecting rods are provided and correspond one-to-one with the anti-rebound mechanism, one end of the connecting rod is fixedly connected to the steel plate, the connecting rod extends into the movable hole and the mounting groove, and the other end of the connecting rod is detachably connected to the buffer spring.

[0014] Preferably, each set of anti-rebound mechanisms includes an installation cavity, a movable plate, a limit plate and a connecting plate opened in the connecting column; the movable plate is slidably arranged in the installation cavity, one end of the limit plate is connected to the movable plate, and the other end of the limit plate passes through the installation cavity and extends into the installation groove. A limit groove adapted to the limit plate is opened on the surface of the connecting rod, one end of the connecting plate is connected to the movable plate, and the other end of the connecting plate is transmission-connected to the unlocking mechanism.

[0015] Preferably, a return spring is further included, one end of the return spring is connected to the movable plate, and the other end of the return spring is connected to the inner wall of the installation cavity.

[0016] Preferably, the unlocking mechanism includes a movable groove, a bearing plate, a push rod, an unlocking spring and an adjusting block provided in the connecting column; the bearing plate is slidably arranged in the movable groove, one end of the push rod is connected to the bearing plate, the other end of the push rod passes through the buffer pad and the steel plate and extends to the outside of the pile pad mechanism, one end of the unlocking spring is connected to the movable groove, the other end of the unlocking spring is connected to the bearing plate, multiple adjusting blocks are provided and correspond one to one with the anti-rebound mechanism, one end of the connecting plate extends into the movable groove, and the connecting plate is provided with an adjusting hole adapted to the adjusting block.

[0017] Compared with the prior art, the above technical solution of the present invention has the following beneficial technical effects:

[0018] The utility model uses the synergistic effect between the buffer spring and the connecting rod to help the buffer pad quickly return to its optimal working state, which can more effectively buffer the impact force of the pile hammer. Through the provision of an anti-rebound mechanism, the limit plate is inserted into the limit groove of the connecting rod under the action of the reset spring to prevent the buffer spring from rebounding, thereby ensuring the stability and buffering effect of the buffer device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of an embodiment of the present invention;

[0020] Figure 2 A cross-sectional view of an embodiment of the present invention;

[0021] Figure 3 For this utility model Figure 2 A partial enlarged view of point A in the middle;

[0022] Figure 4 A three-dimensional diagram of a cushion in one embodiment of the present invention;

[0023] Figure 5 A three-dimensional diagram of a connecting column in an embodiment of the present invention;

[0024] Figure 6 A three-dimensional diagram of an anti-rebound mechanism in an embodiment of the present invention;

[0025] Figure 7 This is a three-dimensional diagram of an unlocking mechanism in an embodiment of the present invention.

[0026] Figure numerals: 1. Connecting column; 2. Connecting tube; 3. Pile pad mechanism; 31. Buffer pad; 32. Steel plate; 33. Connecting rod; 34. Movable hole; 4. Anti-rebound mechanism; 41. Mounting cavity; 42. Movable plate; 43. Limiting plate; 44. Connecting plate; 45. Limiting groove; 46. Reset spring; 5. Unlocking mechanism; 51. Movable groove; 52. Loading plate; 53. Push rod; 54. Unlocking spring; 55. Adjusting block; 56. Adjusting hole; 6. Buffer spring; 7. Mounting groove. DETAILED DESCRIPTION

[0027] Example 1

[0028] like Figure 1-7 As shown, the present invention proposes a buffer device for hammering construction of precast concrete solid square piles, comprising a connecting column 1, a pile pad mechanism 3, a buffer spring 6, an anti-rebound mechanism 4 and an unlocking mechanism 5;

[0029] A connecting tube 2 is provided at the bottom end of the connecting column 1 for connecting the buffer device to the solid square pile;

[0030] The pile pad mechanism 3 is detachably arranged above the connecting column 1;

[0031] A plurality of buffer springs 6 are provided, one end of the buffer spring 6 is connected to the connecting column 1, and the other end of the buffer spring 6 is connected to the pile pad mechanism 3. A plurality of mounting grooves 7 are opened on the surface of the connecting column 1, and the buffer spring 6 is arranged in the mounting groove 7, and one end of the buffer spring 6 is connected to the mounting groove 7;

[0032] The anti-rebound mechanism 4 is provided with multiple groups, and the anti-rebound mechanism 4 is arranged in the connecting column 1, and one end of the anti-rebound mechanism 4 is in contact with the pile pad mechanism 3;

[0033] The unlocking mechanism 5 is disposed in the connecting column 1 , one end of the unlocking mechanism 5 passes through the pile pad mechanism 3 and extends to the outside of the pile pad mechanism 3 , and the action end of the unlocking mechanism 5 is transmission-connected to the anti-rebound mechanism 4 .

[0034] Example 2

[0035] like Figure 1-4 As shown, the utility model proposes a precast concrete solid square pile hammer construction buffer device. Compared with the first embodiment, this embodiment further specifically discloses the structure of the pile pad mechanism 3; the pile pad mechanism 3 includes a buffer pad 31, a steel plate 32 and a connecting rod 33; the buffer pad 31 is penetrated by a plurality of movable holes 34, the steel plate 32 is detachably connected to the buffer pad 31, and the buffer pad 31 adopts a detachable design for easy replacement. There are multiple connecting rods 33 and they correspond one to one with the anti-rebound mechanism 4. One end of the connecting rod 33 is fixedly connected to the steel plate 32, and the connecting rod 33 extends into the movable hole 34 and the mounting groove 7. The other end of the connecting rod 33 is detachably connected to the buffer spring 6.

[0036] Example 3

[0037] like Figure 2-6 As shown, the present invention proposes a precast concrete solid square pile hammer construction buffer device. Compared with the second embodiment, this embodiment further specifically discloses the structure of the anti-rebound mechanism 4; each group of anti-rebound mechanisms 4 includes an installation cavity 41, a movable plate 42, a limit plate 43, a return spring 46 and a connecting plate 44 provided in the connecting column 1; the movable plate 42 is slidably arranged in the installation cavity 41, one end of the limit plate 43 is connected to the movable plate 42, and the other end of the limit plate 43 passes through the installation cavity 41 and extends into the installation groove 7, and a limit groove 45 adapted to the limit plate 43 is provided on the surface of the connecting rod 33, one end of the connecting plate 44 is connected to the movable plate 42, and the other end of the connecting plate 44 is transmission-connected to the unlocking mechanism 5, one end of the return spring 46 is connected to the movable plate 42, and the other end of the return spring 46 is connected to the inner wall of the installation cavity 41.

[0038] Example 4

[0039] like Figure 2-7As shown, the utility model proposes a precast concrete solid square pile hammer construction buffer device. Compared with the third embodiment, this embodiment further specifically discloses the structure of the unlocking mechanism 5; the unlocking mechanism 5 includes a movable groove 51, a bearing plate 52, a push rod 53, an unlocking spring 54 and an adjusting block 55 provided on the connecting column 1; the bearing plate 52 is slidably arranged in the movable groove 51, one end of the push rod 53 is connected to the bearing plate 52, and the other end of the push rod 53 passes through the buffer pad 31 and the steel plate 32 and extends to the outside of the pile pad mechanism 3, one end of the unlocking spring 54 is connected to the movable groove 51, and the other end of the unlocking spring 54 is connected to the bearing plate 52, and a plurality of adjusting blocks 55 are provided and correspond one to one with the anti-rebound mechanism 4, one end of the connecting plate 44 extends into the movable groove 51, and the connecting plate 44 is provided with an adjusting hole 56 adapted to the adjusting block 55.

[0040] Before sinking the pile, the connecting tube 2 is sleeved on the top of the solid square pile to realize the connection between the buffer device and the solid square pile, and the pile sinking begins. When the pile hammer falls, the pile hammer first contacts the top rod 53, and the top rod 53 pushes the bearing plate 52 and the adjusting block 55 to move downward together. The adjusting block 55 moves downward and drives the connecting plate 44 to move through the adjusting hole 56. The movement of the connecting plate 44 drives the limiting plate 43 to disengage from the limiting groove 45 of the connecting rod 33 through the movable plate 42. The pile hammer continues to move downward and contacts the steel plate 32. The impact force of the pile hammer is evenly transmitted from the steel plate 32 to the buffer pad 3 1, the buffer pad 31 is deformed by the force, and at the same time, the connecting rod 33 moves downward to compress the buffer spring 6. The impact force of the pile hammer is buffered by the buffer pad 31 and the buffer spring 6 and is transmitted to the connecting column 1 and the pile top. When the pile hammer is lifted, the buffer spring 6 rebounds and lifts the steel plate 32 through the connecting rod 33, helping the buffer pad 31 to quickly restore to the optimal working state. The push rod 53, the bearing plate 52 and the adjustment block 55 are reset under the action of the unlocking spring 54. At the same time, the limit plate 43 is inserted into the limit groove 45 of the connecting rod 33 under the action of the reset spring 46 to prevent the buffer spring 6 from rebounding.

[0041] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A precast concrete solid square pile hammer construction buffer device, characterized in that: include: A connecting column (1) is provided at its bottom end with a connecting tube (2) for connecting the buffer device to the solid square pile; A pile pad mechanism (3) is detachably arranged above the connecting column (1); A plurality of buffer springs (6) are provided, one end of the buffer spring (6) is connected to the connecting column (1), and the other end of the buffer spring (6) is connected to the pile pad mechanism (3); An anti-rebound mechanism (4) is provided in multiple groups, the anti-rebound mechanism (4) is provided in the connecting column (1), and one end of the anti-rebound mechanism (4) is in contact with the pile pad mechanism (3); An unlocking mechanism (5) is arranged in the connecting column (1), one end of the unlocking mechanism (5) penetrates the pile pad mechanism (3) and extends to the outside of the pile pad mechanism (3), and the action end of the unlocking mechanism (5) is transmission-connected to the anti-rebound mechanism (4).

2. A precast concrete solid square pile hammer construction buffer device according to claim 1, characterized in that: A plurality of mounting grooves (7) are provided on the surface of the connecting column (1), the buffer spring (6) is arranged in the mounting groove (7), and one end of the buffer spring (6) is connected to the mounting groove (7).

3. A precast concrete solid square pile hammer construction buffer device according to claim 2, characterized in that: The pile pad mechanism (3) comprises a buffer pad (31), a steel plate (32) and a connecting rod (33); the buffer pad (31) is provided with a plurality of movable holes (34); the steel plate (32) and the buffer pad (31) are detachably connected; a plurality of connecting rods (33) are provided and correspond one to one with the anti-rebound mechanism (4); one end of the connecting rod (33) is fixedly connected to the steel plate (32); the connecting rod (33) extends into the movable hole (34) and the mounting groove (7); the other end of the connecting rod (33) is detachably connected to the buffer spring (6).

4. A precast concrete solid square pile hammer construction buffer device according to claim 3, characterized in that: Each set of anti-rebound mechanisms (4) includes a mounting cavity (41) provided in the connecting column (1), a movable plate (42), a limiting plate (43) and a connecting plate (44); the movable plate (42) is slidably arranged in the mounting cavity (41), one end of the limiting plate (43) is connected to the movable plate (42), the other end of the limiting plate (43) passes through the mounting cavity (41) and extends into the mounting groove (7), a limiting groove (45) adapted to the limiting plate (43) is provided on the surface of the connecting rod (33), one end of the connecting plate (44) is connected to the movable plate (42), and the other end of the connecting plate (44) is transmission-connected to the unlocking mechanism (5).

5. The precast concrete solid square pile hammer construction buffer device according to claim 4, characterized in that: It also includes a return spring (46), one end of the return spring (46) is connected to the movable plate (42), and the other end of the return spring (46) is connected to the inner wall of the installation cavity (41).

6. The precast concrete solid square pile hammer construction buffer device according to claim 5, characterized in that: The unlocking mechanism (5) comprises a movable groove (51) provided on the connecting column (1), a bearing plate (52), a push rod (53), an unlocking spring (54) and an adjusting block (55); the bearing plate (52) is slidably arranged in the movable groove (51), one end of the push rod (53) is connected to the bearing plate (52), the other end of the push rod (53) passes through the buffer pad (31) and the steel plate (32) and extends to the outside of the pile pad mechanism (3), one end of the unlocking spring (54) is connected to the movable groove (51), the other end of the unlocking spring (54) is connected to the bearing plate (52), a plurality of adjusting blocks (55) are provided and correspond to the anti-rebound mechanism (4), one end of the connecting plate (44) extends into the movable groove (51), and the connecting plate (44) is provided with an adjusting hole (56) adapted to the adjusting block (55).

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