Pile pressing mechanism for PHC tubular pile construction

Abstract

The utility model relates to the technical field of PHC pipe pile pressing, and discloses a PHC pipe pile construction pile pressing mechanism which is characterized in that a through opening is formed in the middle of the box face of a pile pressing box frame in a through mode, and two sets of pipe pile butt-clamping components are symmetrically arranged in the middle of a box body of the pile pressing box frame in the through opening direction of the through opening; the upper end and the lower end of a box body of the pile pressing box frame are provided with two guide limiting assemblies in a vertical included angle mode in the through opening direction of the through opening. The PHC pipe pile is subjected to butt-clamping guide positioning based on the pipe pile butt-clamping component, then the PHC pipe pile is subjected to transverse and longitudinal butt-clamping guide limiting through the two sets of vertically opposite guide limiting assemblies, multi-point butt-pressing limiting is formed, and therefore the vertical stability of the PHC pipe pile during pipe sinking is guaranteed; and then under hydraulic reciprocating pushing of the pile pressing hydraulic push rod, the PHC pipe pile sinking pipe after butt clamping and fixing is pushed, the good vertical guiding performance is achieved, and the stability and accuracy of the PHC pipe pile sinking pipe can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of PHC pipe pile pressing, in particular to a PHC pipe pile construction pile pressing mechanism. Background Art

[0002] PHC pipe piles are widely used in railways, highways, bridges, ports, docks, water conservancy and other large-scale buildings as the foundation of high-rise buildings and low-capped piles for industrial and civil buildings. There are two main methods for the construction of PHC pipe piles: hammering and static pressure. Since the diesel hammer and hydraulic hammer hammering method produce a lot of noise and have a great impact on the surrounding environment, with the advent of large-tonnage pile drivers and the improvement of static pressure pile construction technology, the static pressure construction technology has obvious advantages over the hammering method and has gradually been widely promoted and used.

[0003] When using the static pressure construction process to sink pipes and press the PHC pipe piles, the hydraulic pile pressing mechanism on the static pressure pile driver is used to press the pipe piles down in sequence. However, when the existing pile pressing mechanism is used to sink the pipe piles, due to the long length of the pipe column, the crane hoists the pipe pile into the pressing mechanism for pressing and fixing, and then presses down to sink the pipe. Its single clamping and fixing guiding method cannot effectively ensure the vertical guiding property of the pipe pile sinking pipe. It is very easy to deflect under the influence of the external environment, and continuous correction is required to make the upper and lower pipe piles sink in sequence and connect. To this end, those skilled in the art provide a PHC pipe pile construction pile pressing mechanism to solve the problems raised in the above background technology. Utility Model Content

[0004] The main purpose of the utility model is to provide a PHC pipe pile construction pile driving mechanism, which can effectively solve the problem of poor vertical guiding stability of the pipe piles in the existing PHC pipe pile pressing mechanism in the background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a PHC pipe pile construction pile driving mechanism, comprising two sets of track frames facing each other horizontally;

[0006] A pile-pressing hydraulic push rod is installed in the middle of the top frame of the two groups of track frames, and a lifting slide is provided at the telescopic end of each group of pile-pressing hydraulic push rods, and a pile-pressing box frame is installed between the two groups of lifting slides;

[0007] A through hole is formed in the middle of the box surface of the pile driving box frame, and two groups of pipe pile clamping parts are symmetrically arranged in the middle of the box body of the pile driving box frame along the through hole direction;

[0008] Two sets of guide and limit assemblies are arranged at the upper and lower ends of the box body of the pile driving box frame in the form of a vertical angle along the opening direction of the through opening.

[0009] As a further solution of the utility model: the pipe pile clamping component includes a clamping hydraulic push rod, and a clamping sleeve is installed on the telescopic end of the clamping hydraulic push rod.

[0010] As a further solution of the utility model: the guide and limit assembly includes an arm force slide rail installed in a horizontally symmetrical form on the inner wall of the pile driving box frame, and a clamping screw rod is rotatably connected directly below the guide rail of the arm force slide rail, and two groups of clamping slides guided by the arm force slide rail are symmetrically sleeved on the outer side of the shaft rod of the clamping screw rod, and rotating seats are installed on the top of the frames of the two groups of clamping slides, and the output ends of the two groups of rotating seats are symmetrically rotatably connected to guide cams.

[0011] As a further solution of the utility model: a reduction drive motor fixed on the pile driving box frame is installed between the two groups of the clamping screw rods, a drive shaft is provided at the output end of the reduction drive motor, and bevel gears A are symmetrically provided at both ends of the shaft rod of the drive shaft, and bevel gears B meshing with the bevel gear A are respectively provided at one end of the shaft rod of the two groups of the clamping screw rods.

[0012] As a further solution of the utility model: the clamping screw rod is bounded by a center line, and positive and negative thread teeth that are compatible with two groups of clamping slides are symmetrically arranged on both sides of the center line.

[0013] As a further solution of the utility model: the guide rail ends of the track frame are symmetrically provided with lifting slide rails that guide the lifting slide platform.

[0014] As a further solution of the utility model: a bottom support bracket is installed on the bracket back plate of the track frame.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] When the utility model utilizes the pressing mechanism to carry out the pile-pressing and pipe-sinking work on the PHC pipe piles, after the PHC pipe piles are hoisted and placed inside the through-hole of the pile-pressing box frame by means of the crane equipment, the PHC pipe piles are clamped and guided and positioned based on the pipe pile clamping components, and then the PHC pipe piles are clamped and guided and limited in the horizontal and vertical forms by means of two sets of vertically opposite guide limit assemblies, forming a multi-point pressing and limiting form to ensure the vertical stability of the PHC pipe piles during pipe-pressing and pipe-sinking, and then the PHC pipe piles are pushed to be fixed by the clamps under the hydraulic reciprocating push of the pile-pressing hydraulic push rod, which has good vertical guiding performance and can ensure the stability and accuracy of the PHC pipe piles during pipe-sinking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a PHC pipe pile construction pile driving mechanism of the utility model;

[0018] Figure 2It is a transmission schematic diagram of a lifting slide in a PHC pipe pile construction pile driving mechanism of the utility model;

[0019] Figure 3 It is a schematic diagram of the structure inside the pile pressing box frame in a pile pressing mechanism for PHC pipe pile construction of the utility model;

[0020] Figure 4 It is a structural schematic diagram of a pipe pile clamping component in a PHC pipe pile construction pile driving mechanism of the utility model;

[0021] Figure 5 The utility model is a structural schematic diagram of a guide and limiter assembly in a pile driving mechanism for PHC pipe pile construction.

[0022] In the figure: 1. Track frame; 2. Bottom support bracket; 3. Pile pressing hydraulic push rod; 4. Pile pressing box frame; 5. Through-hole; 6. Pile clamping component; 61. Clamping hydraulic push rod; 62. Clamping sleeve; 7. Lifting slide rail; 8. Lifting slide; 9. Guide limit assembly; 91. Arm slide rail; 92. Clamping screw rod; 93. Clamping slide; 94. Rotating seat; 95. Guide cam; 96. Reduction drive motor; 97. Drive shaft; 98. Bevel gear A; 99. Bevel gear B. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Please refer to Figure 1-4 As shown, a PHC pipe pile construction pile driving mechanism includes two sets of track frames 1 facing each other horizontally, and the bracket back plate of the track frame 1 is installed with a bottom support bracket 2. By utilizing the combination of the track frame 1 and the bottom support bracket 2, the pressing mechanism is installed on a static pressure pile driver as a static pressure pipe sinking equipment for PHC pipe piles.

[0027] A through opening 5 is provided through the middle of the box surface of the pile driving box frame 4, and two groups of pipe pile clamping components 6 are symmetrically arranged in the middle of the box body of the pile driving box frame 4 along the through opening direction of the through opening 5. The pipe pile clamping components 6 include a clamping hydraulic push rod 61, and a clamping sleeve 62 is installed at the telescopic end of the clamping hydraulic push rod 61. After the PHC pipe pile is hoisted into the through opening 5 of the pile driving box frame 4 by a crane, the telescopic end of the clamping hydraulic push rod 61 is controlled to extend to push the two groups of clamping sleeves 62 to clamp. The ring sleeve is fixed on the PHC pipe pile. On the one hand, it plays a vertical guiding role to keep the PHC pipe pile in a vertical hanging state and align it with the PHC pipe pile after the previous group of pipe sinking. On the other hand, it plays a pressing and fixing role, and as a force-bearing component, it pushes the PHC pipe pile sinking downward.

[0028] The upper and lower ends of the box body of the pile driving box frame 4 are provided with two sets of guide limit assemblies 9 in the form of a vertical angle along the opening direction of the through-opening 5. The guide limit assemblies 9 include an arm force slide rail 91 installed in a horizontally symmetrical form on the inner wall of the box body of the pile driving box frame 4, and a clamping screw rod 92 is rotatably connected directly below the guide rail of the arm force slide rail 91. The outer side of the shaft rod of the clamping screw rod 92 is symmetrically sleeved with two sets of clamping slides 93 guided by the arm force slide rail 91. The top of the frame of the two sets of clamping slides 93 is installed with a rotating seat 94, and the output ends of the two sets of rotating seats 94 are symmetrically connected with guide cams 95. A speed reducer fixed on the pile driving box frame 4 is installed between the two sets of clamping screw rods 92. The driving motor 96 is provided with a driving shaft 97 at the output end of the reduction driving motor 96, and bevel gears A98 are symmetrically provided at both ends of the shaft of the driving shaft 97. One end of the shaft of the two sets of clamping screw rods 92 is respectively provided with a bevel gear B99 meshing with the bevel gear A98. By controlling the operation of the reduction driving motor 96, the driving shaft 97 is driven to rotate, and then the bevel gear A98 is driven to rotate. The meshing transmission of the bevel gear A98 and the bevel gear B99 is utilized to drive the clamping screw rods 92 to rotate. As a driving source, the driving guide cam 95 is driven to symmetrically displace and clamped on the outside of the PHC pile to play an auxiliary vertical guiding role to avoid the deviation of the PHC pile when the pile is sunk.

[0029] The clamping screw rod 92 is bounded by the center line, and positive and negative threads that are compatible with the two groups of clamping slides 93 are symmetrically arranged on both sides of the center line. During the rotation of the clamping screw rod 92, its positive and negative threads are used to push the two groups of clamping slides 93 to slide symmetrically along the track direction of the arm force slide rail 91, so that the two relative groups of guide cams 95 move symmetrically and are ringed on the outside of the PHC pile, which plays a circumferential surrounding and guiding limit work on the PHC pile to ensure the vertical stability of the PHC pile sinking pipe.

[0030] A pile-driving hydraulic push rod 3 is installed in the middle of the top frame of the two groups of track frames 1, and a lifting slide 8 is provided at the telescopic end of each group of pile-driving hydraulic push rods 3. A pile-driving box frame 4 is installed between the two groups of lifting slides 8. The guide rail end of the track frame 1 is symmetrically provided with a lifting slide 7 that guides the lifting slide 8. After the PHC piles are limited and fixed, the telescopic end of the pile-driving hydraulic push rod 3 is controlled to brake and extend, which serves as a power source to push the lifting slide 8 to slide along the guide rail direction of the lifting slide 7, and then push the PHC piles fixed in the pile-driving box frame 4 to move downward, and the PHC piles are statically pushed into the deep foundation, and then the PHC piles are cyclically sunk according to this type of hydraulic circulation pushing method.

[0031] The working principle of the utility model is as follows: when the pile-pressing mechanism is used to press the PHC pile, the PHC pile is hoisted and placed inside the through-hole 5 of the pile-pressing box frame 4 by a crane, and then the telescopic end of the clamping hydraulic push rod 61 is controlled to extend, so as to push two sets of clamping sleeves 62 to clamp, and the sleeves are fixed on the PHC pile, so as to fix and limit the PHC pile, and align it with the previous set of piles;

[0032] Then, the reduction drive motor 96 is controlled to work, driving the drive shaft 97 to rotate, and the transmission combination of the bevel gear A98 and the bevel gear B99 is used to drive the clamping screw rod 92 to rotate, and the positive and negative threads thereof are used to push the two sets of clamping slides 93 to slide symmetrically along the track direction of the arm force slide rail 91, so that the two opposite sets of guide cams 95 move symmetrically and are sleeved on the outside of the PHC pile, so as to play a circumferential surrounding and guiding and limiting work on the PHC pile. Then, in this way, the guide cams 95 in the two vertically opposite sets of guide and limiting assemblies 9 are sleeved on the outside of the PHC pile in a horizontal and vertical form, and play a multi-point guiding and limiting fixed state with the pile clamping component 6;

[0033] Furthermore, after the PHC pile guide limit is fixed, the pile heads of the upper and lower groups of piles are welded and fixed, and then the telescopic end of the pile-pressing hydraulic push rod 3 is controlled to brake and extend, which serves as a power source to push the lifting slide 8 to slide along the guide rail direction of the lifting slide rail 7, and simultaneously push the PHC pile sinking pipe fixed in the pile-pressing box frame 4 to move downward, and statically push the PHC pile into the deep foundation. While the pile-pressing hydraulic push rod 3 reciprocates and retracts, the pile clamping components 6 need to open and close symmetrically to release the pressure fixation on the PHC pile. At this time, the guide cam 95 in the rotating state of the guide limit assembly 9 can still play a clamping guide limit on the PHC pile, so as to ensure the vertical guiding property of the PHC pile for continuous sinking. Then, according to this type of hydraulic circulation pushing method, the PHC pile is circulated and sunk, and its sinking stability is better.

[0034] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A PHC pile construction pile driving mechanism, characterized in that: It comprises two sets of track frames (1) facing each other horizontally; A pile-pressing hydraulic push rod (3) is installed in the middle of the top frame of the two groups of track frames (1), and a lifting slide (8) is provided at the telescopic end of each group of pile-pressing hydraulic push rod (3), and a pile-pressing box frame (4) is installed between the two groups of lifting slides (8); A through opening (5) is provided in the middle of the box surface of the pile driving box frame (4), and two groups of pipe pile clamping components (6) are symmetrically arranged in the middle of the box body of the pile driving box frame (4) along the opening direction of the through opening (5); Two groups of guide limiter components (9) are arranged at the upper and lower ends of the box body of the pile driving box frame (4) in the form of a vertical angle along the opening direction of the through opening (5).

2. A PHC pipe pile construction pile driving mechanism according to claim 1, characterized in that: The pipe pile clamping component (6) comprises a clamping hydraulic push rod (61), and a clamping sleeve (62) is installed at the telescopic end of the clamping hydraulic push rod (61).

3. A PHC pipe pile construction pile driving mechanism according to claim 1, characterized in that: The guide limit assembly (9) comprises an arm force slide rail (91) which is horizontally symmetrically mounted on the inner wall of the pile driving box frame (4), and a clamping screw rod (92) is rotatably connected to the lower portion of the guide rail of the arm force slide rail (91), and two groups of clamping slides (93) which are guided by the arm force slide rail (91) are symmetrically sleeved on the outer side of the shaft of the clamping screw rod (92), and rotating seats (94) are mounted on the top ends of the two groups of clamping slides (93), and the output ends of the two groups of rotating seats (94) are symmetrically rotatably connected to guide cams (95).

4. A PHC pipe pile construction pile driving mechanism according to claim 3, characterized in that: A reduction drive motor (96) fixed on the pile driving box frame (4) is installed between the two groups of the clamping screw rods (92), a drive shaft (97) is provided at the output end of the reduction drive motor (96), and bevel gears A (98) are symmetrically provided at both ends of the shaft of the drive shaft (97), and bevel gears B (99) meshing with the bevel gear A (98) are respectively provided at one end of the shaft of the two groups of the clamping screw rods (92).

5. A PHC pipe pile construction pile driving mechanism according to claim 3, characterized in that: The clamping screw rod (92) is bounded by a midline, and both sides of the midline are symmetrically provided with positive and negative thread teeth adapted to the two sets of clamping slides (93).

6. A PHC pipe pile construction pile driving mechanism according to claim 1, characterized in that: The guide rail ends of the track frame (1) are symmetrically provided with lifting rails (7) that guide the lifting slide platform (8).

7. A PHC pipe pile construction pile driving mechanism according to claim 1, characterized in that: A bottom support bracket (2) is installed on the bracket back plate of the track frame (1).

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