A bridge pile foundation construction equipment

Abstract

The present invention relates to the technical field of bridge pile construction, specifically to a bridge pile foundation construction equipment, including a circular base, a vertical slide rail is fixedly installed on the upper end surface of the circular base, a triangular fixing plate located in front of the vertical slide rail is fixedly installed on the upper end surface of the circular base, and a pile fixing mechanism is arranged on the triangular fixing plate. The static pressure construction operation of steel pipe piles is completed by adopting an integrated automatic operation model of pile fixing, static pressure and support. Firstly, the ring rolling pressure technology is used to ensure that the steel pipe piles are uniformly stressed during the pressing process. Secondly, a stable structure is formed by triangular plane supports at the upper, middle and lower positions to further ensure the verticality and uniform stress of the steel pipe piles. The triangular pyramid support provides a stable three-point support foundation for the hydraulic cylinder. The three-fold design cooperates with each other, which not only greatly improves the stability and accuracy of the steel pipe piles during the pressing process, but also enhances the bearing capacity of the entire system, reduces stress concentration problems, and thus comprehensively improves the construction quality, efficiency and safety.

Description

Technical Field

[0001] The invention relates to the technical field of bridge pile construction, in particular to bridge pile foundation construction equipment. Background Art

[0002] Static pressure steel pipe pile reinforcement technology is a foundation treatment method widely used in foundation projects such as bridges and buildings. It usually uses static force (usually hydraulic pressure) to gradually press prefabricated steel pipe piles into the soil layer until the depth or resistance required by the design is reached, so as to achieve the purpose of enhancing the bearing capacity of the foundation, reducing settlement and improving structural stability. Because static pressure steel pipe piles are statically pressed in without the hammering action of traditional pile driving, they will not affect surrounding buildings and residents. Compared with traditional bored cast-in-place piles and other methods, static pressure steel pipe piles have a faster construction speed and a shorter construction period. Therefore, they are often used in areas that are sensitive to noise and vibration, such as urban centers and historical and cultural protection areas.

[0003] However, the following disadvantages exist in the static pressure reinforcement of steel pipe piles: 1. In the process of static pressure reinforcement of steel pipe piles, it is usually necessary to first fix guide columns on both sides of the installation position, and then workers manually adjust the position of the hydraulic cylinder between the guide columns, and then manually lock the hydraulic cylinder on the guide columns on both sides, and start the hydraulic system to gradually increase the pressure, so that the steel pipe piles are pressed into the soil in a predetermined direction and speed. In the above static pressure operation, workers need to frequently manually adjust the position of the hydraulic cylinder and lock it, which not only increases the labor intensity, but also leads to operating errors and low work efficiency. In addition, the hydraulic system only relies on the guide columns on both sides to provide support, which cannot cope with large lateral forces or uneven pressure distribution, thereby causing the steel pipe piles to deflect or tilt during the pressing process, affecting the final reinforcement effect; 2. In the process of static pressure reinforcement of steel pipe piles, the descending direction of the steel pipe piles is not effectively supported, making the steel pipe piles prone to deflection or tilt during the pressing process. If the steel pipe piles are not installed correctly, the bearing capacity of the steel pipe piles will be insufficient, affecting the overall structural safety of the building. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a bridge pile foundation construction equipment, which is achieved by the following specific technical means: a bridge pile foundation construction equipment, including a circular base, a vertical slide rail is fixedly installed on the upper end surface of the circular base, a triangular fixing plate located in front of the vertical slide rail is fixedly installed on the upper end surface of the circular base, and a pile fixing mechanism is arranged on the triangular fixing plate; the pile fixing mechanism includes a limiting part arranged on the triangular fixing plate, a rotating part and a pressing part for cooperating with the rotating part to perform annular rolling pressing on the side wall of the steel pipe pile.

[0005] The vertical slide rail and the circular base are jointly provided with a static pressure mechanism for cooperating with the pile fixing mechanism to implement static pressure reinforcement on the steel pipe piles; the static pressure mechanism includes a bearing part arranged on the vertical slide rail and used to automatically adjust the height of the static pressure steel pipe piles, the limiting part cooperates with the bearing part to provide triangular plane support at the upper, middle and lower positions for the static pressure reinforced steel pipe piles, the bearing part is provided with a hydraulic part and a driving part, and the bearing part is also provided with a locking part for cooperating with the driving part to automatically lock the bearing part.

[0006] The bearing part and the circular base are jointly provided with a supporting mechanism for providing triangular pyramid support for the bearing part during the process of the hydraulic part implementing static pressure reinforcement of the steel pipe pile; the supporting mechanism includes a supporting part arranged on the bearing part, and the bearing part is also provided with a fixing part for fixing the supporting part.

[0007] As a preferred technical solution of the present invention, the limiting portion includes a through pile hole, a first limiting hole and a limiting cavity. The upper end surface of the triangular fixing plate is penetrated with a through pile hole coaxial with its inscribed circle, the upper end surface of the triangular fixing plate is penetrated with a first limiting hole located at the perpendicular line and close to the corresponding angle, and a limiting cavity located outside the through pile hole is opened in the triangular fixing plate.

[0008] As a preferred technical solution of the present invention, the rotating part includes a rotating rod and a first gear ring. The first gear ring is installed on the lower end surface of the limiting cavity through a bearing. The rotating rod is installed on the upper end surface of the triangular fixed plate through a bearing. The rotating rod is fixedly sleeved with a first gear meshing with the first gear ring.

[0009] As a preferred technical solution of the present invention, the pressing part includes a screw barrel, a first screw, a sliding rod, an arc-shaped resistance plate and a ball bearing, wherein a plurality of screw barrels penetrating the inner ring wall of the through-pile hole are installed in the limiting cavity in a circumferential array manner through bearings, a first bevel gear located in the limiting cavity is fixedly sleeved on the screw barrel, a first bevel gear ring meshingly connected to the plurality of first bevel gears is fixedly installed on the upper end surface of the first gear ring, a first screw barrel corresponding to the screw barrel is slidably penetrated and installed on the triangular fixed plate, the first screw is threadedly connected to the corresponding screw barrel, a sliding rod corresponding to the first screw and located above the first screw is slidably penetrated and installed on the triangular fixed plate, a connecting plate is fixedly installed at one end of the same group of sliding rods distributed up and down and the first screw away from the triangular fixed plate, and a arc-shaped resistance plate located in the through-pile hole is fixedly installed at the other end of the same group of sliding rods distributed up and down and the first screw, and a plurality of balls are distributed in an array manner on one side wall of the arc-shaped resistance plate close to each other.

[0010] As a preferred technical solution of the present invention, the bearing part includes a lead screw, a triangular bearing plate, a guide rod, a lock hole and an equipment groove. The lead screw is installed in the vertical slide rail through a bearing, and a triangular bearing plate threadedly connected to the lead screw is slidably installed in the vertical slide rail. A guide rod located at the first limit hole is fixedly installed on the upper end surface of the circular base, and the upper end of the guide rod slides through the triangular bearing plate. A number of lock holes are opened in a linear array on the outer ring wall of the guide rod from top to bottom, and an equipment groove coaxial with the through pile hole is opened at the center of the upper end surface of the triangular bearing plate.

[0011] As a preferred technical solution of the present invention, the hydraulic unit includes a hydraulic cylinder and a circular pressure plate, the hydraulic cylinder is fixedly mounted on the lower end surface of the triangular bearing plate, and the circular pressure plate is fixedly mounted on the telescopic end of the hydraulic cylinder.

[0012] As a preferred technical solution of the present invention, the driving part includes a center column, a motor and a second gear ring. The center column is fixedly installed at the center of the equipment slot, the motor is fixedly installed on the center column, a second gear is fixedly sleeved on the output end of the motor, and the lower end surface of the equipment slot is equipped with a second gear ring meshing with the second gear through a bearing.

[0013] As a preferred technical solution of the present invention, the locking part includes a limiting slide, a second screw, a slider and a locking rod. The upper end surface of the triangular bearing plate is provided with a limiting slide located at the vertical line and close to the corresponding angle. A second screw penetrating the outer ring wall of the equipment groove is installed in the limiting slide through a bearing. A second bevel gear located in the equipment groove is fixedly sleeved on the second screw. A second bevel gear ring meshing with a plurality of second bevel gears is fixedly installed on the upper end surface of the second gear ring. A slider threadedly connected to the second screw is slidably installed in the limiting slide. A locking rod engaged with the corresponding lock hole is fixedly installed on the upper end of the slider. The triangular bearing plate, the triangular fixing plate and the triangular support plate are equilateral triangles.

[0014] As a preferred technical solution of the present invention, the support part includes an alignment groove, a fixing ring, a support seat and a telescopic rod. The upper end surface of the triangular bearing plate is provided with an alignment groove located at the vertical line and away from the corresponding angle. A fixing ring is fixedly sleeved on the upper end of the center column. Telescopic rods corresponding to the alignment grooves one by one are hinged on the fixing ring. The lower end of the telescopic rod is hinged with a support seat fixedly connected to the upper end surface of the circular base.

[0015] As a preferred technical solution of the present invention, the fixing part includes an electric push rod and an extrusion plate, the lower end of the triangular bearing plate is fixedly installed with an electric push rod corresponding to the alignment groove one by one, and the telescopic end of the electric push rod is fixedly installed with an extrusion plate for extruding the telescopic rod on the side wall of the alignment groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The bridge pile foundation construction equipment, through the coordinated use of the pile fixing mechanism, static pressure mechanism and support mechanism, adopts an integrated automatic operation model of pile fixing, static pressure and support to complete the static pressure construction operation of the steel pipe piles. Firstly, the annular rolling pressure technology is used to ensure that the steel pipe piles are uniformly stressed during the pressing process. Secondly, a stable structure is formed by the upper, middle and lower triangular plane supports to further ensure the verticality and uniform stress of the steel pipe piles. The triangular pyramid support provides a stable three-point support foundation for the hydraulic cylinder. The three designs cooperate with each other and work together, which not only greatly improves the stability and accuracy of the steel pipe piles during the pressing process, but also enhances the bearing capacity of the entire system, reduces the stress concentration problem, and thus comprehensively improves the construction quality, efficiency and safety.

[0017] 2. The bridge pile foundation construction equipment, through the pile fixing mechanism, implements annular rolling pressure on the outer ring wall of the steel pipe pile before the static pressure reinforcement process. The annular rolling pressure can evenly apply pressure to make the steel pipe pile more stable during the pressing process, reduce the risk of deflection and tilt, and reduce the gap between the steel pipe pile and the soil, improve the overall density and stability, and at the same time ensure that the steel pipe pile moves along the predetermined path during the pressing process, reduce position deviation and improve construction accuracy.

[0018] 3. The bridge pile foundation construction equipment, through the static pressure mechanism, can provide triangular plane support at the top, middle and bottom for the steel pipe piles during static pressure reinforcement. The three support points form a stable structure, which further maintains the verticality of the steel pipe piles and greatly reduces the risk of deflection and tilt of the steel pipe piles during the pressing process. The three support points can ensure that the steel pipe piles are evenly stressed at different heights to avoid local stress concentration, thereby significantly improving the construction quality and stability of the steel pipe piles.

[0019] 4. The bridge pile foundation construction equipment, through the coordinated use of the static pressure mechanism and the support mechanism, provides a triangular pyramid support for the hydraulic cylinder on the triangular bearing plate during the static pressure reinforcement of the steel pipe piles, so that the triangular pyramid structure provides three stable support points for the hydraulic cylinder, forming a solid triangular foundation, which greatly enhances the stability of the hydraulic cylinder and makes the hydraulic cylinder more evenly stressed. The triangular pyramid structure can better disperse the equipment pressure, avoiding the stress concentration problem that may be caused by single-point stress, thereby improving the bearing capacity of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention when it is working.

[0021] Figure 2 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.

[0022] Figure 3 It is a partially cutaway three-dimensional structural schematic diagram of the piling mechanism of the present invention.

[0023] Figure 4 It is a partial three-dimensional structural schematic diagram of the static pressure mechanism of the present invention.

[0024] Figure 5 It is a partial three-dimensional structural schematic diagram of the support mechanism of the present invention.

[0025] In the figure: 1, circular base; 2, vertical slide rail; 3, triangular fixing plate; 4, pile fixing mechanism; 41, limiting part; 411, pile hole; 412, first limiting hole; 413, limiting cavity; 42, rotating part; 421, rotating rod; 422, first gear ring; 43, pressing part; 431, screw barrel; 432, first screw rod; 433, sliding rod; 434, arc-shaped pressing plate; 435, ball bearing; 5, static pressure mechanism; 51, bearing part; 511, lead screw; 512, triangular bearing plate; 513, guide rod; 514 , lock hole; 515, equipment slot; 52, hydraulic unit; 521, hydraulic cylinder; 522, round pressure plate; 53, driving unit; 531, center column; 532, motor; 533, second gear ring; 54, locking unit; 541, limiting slide; 542, second screw; 543, slider; 544, locking rod; 6, supporting mechanism; 61, supporting unit; 611, alignment slot; 612, fixing ring; 613, supporting seat; 614, telescopic rod; 62, fixing unit; 621, electric push rod; 622, extrusion plate. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1 A bridge pile foundation construction equipment includes a circular base 1, a vertical slide rail 2 is fixedly installed on the upper end surface of the circular base 1, a triangular fixing plate 3 located in front of the vertical slide rail 2 is fixedly installed on the upper end surface of the circular base 1, and a pile fixing mechanism 4 is arranged on the triangular fixing plate 3; the pile fixing mechanism 4 includes a limiting portion 41 arranged on the triangular fixing plate 3, a rotating portion 42 is arranged on the limiting portion 41, and a pressing portion 43 used to cooperate with the rotating portion 42 to perform annular rolling pressing on the side wall of the steel pipe pile.

[0028] See also Figure 1The vertical slide rail 2 and the circular base 1 are jointly provided with a static pressure mechanism 5 for cooperating with the pile fixing mechanism 4 to implement static pressure reinforcement on the steel pipe pile; the static pressure mechanism 5 includes a bearing part 51 arranged on the vertical slide rail 2 and used to automatically adjust the height of the static pressure steel pipe pile, the limiting part 41 cooperates with the bearing part 51 to provide a triangular plane support at the upper, middle and lower positions for the static pressure reinforced steel pipe pile, the bearing part 51 is provided with a hydraulic part 52 and a driving part 53, and the bearing part 51 is also provided with a locking part 54 for cooperating with the driving part 53 to automatically lock the bearing part 51.

[0029] See also Figure 1 The bearing part 51 and the circular base 1 are jointly provided with a supporting mechanism 6 for providing a triangular pyramid support for the bearing part 51 during the process of the hydraulic part 52 implementing static pressure reinforcement of the steel pipe pile; the supporting mechanism 6 includes a supporting part 61 arranged on the bearing part 51, and the bearing part 51 is also provided with a fixing part 62 for fixing the supporting part 61.

[0030] See also Figure 1 , Figure 2 and Figure 3 The limiting portion 41 includes a through pile hole 411, a first limiting hole 412 and a limiting cavity 413. The upper end surface of the triangular fixing plate 3 is penetrated with a through pile hole 411 coaxial with its inscribed circle. The upper end surface of the triangular fixing plate 3 is penetrated with a first limiting hole 412 located at the perpendicular line thereof and close to the corresponding angle. A limiting cavity 413 is opened in the triangular fixing plate 3 and is located outside the through pile hole 411.

[0031] See also Figure 1 and Figure 3 The rotating part 42 includes a rotating rod 421 and a first gear ring 422. The first gear ring 422 is installed on the lower end surface of the limiting cavity 413 through a bearing. The rotating rod 421 is installed on the upper end surface of the triangular fixing plate 3 through a bearing. The rotating rod 421 is fixedly sleeved with a first gear meshing with the first gear ring 422.

[0032] See also Figure 1 and Figure 3The pressing part 43 includes a screw barrel 431, a first screw rod 432, a sliding rod 433, an arc-shaped pressing plate 434 and a ball 435. A plurality of screw barrels 431 penetrating the inner ring wall of the pile hole 411 are installed in a circular array in the limiting cavity 413 through a bearing. A first bevel gear located in the limiting cavity 413 is fixedly sleeved on the screw barrel 431. A first bevel gear ring meshingly connected with the plurality of first bevel gears is fixedly installed on the upper end surface of the first gear ring 422. A first screw rod 432 corresponding to the screw barrel 431 is slidably installed on the triangular fixing plate 3. The first screw rod 432 is slidably penetrated and installed on the triangular fixing plate 3. 2 is threadedly connected with the corresponding screw barrel 431, and a sliding rod 433 corresponding to the first screw rod 432 and located above the first screw rod 432 is slidably installed on the triangular fixing plate 3, and the same group of sliding rods 433 distributed up and down and the end of the first screw 432 away from the triangular fixing plate 3 are fixedly installed with a connecting plate, and the same group of sliding rods 433 distributed up and down and the other end of the first screw 432 are fixedly installed with an arc-shaped abutment plate 434 located in the through-pile hole 411, and a plurality of balls 435 are distributed in an array on one side wall of the arc-shaped abutment plate 434 close to each other.

[0033] During the specific work, when it is necessary to statically reinforce the steel pipe pile, first move the equipment to the predetermined position, then place the steel pipe pile at the center of the pile hole 411, and then the worker holds the electric rotating tool to rotate the rotating rod 421, so that it rotates the first gear ring 422 through the first gear, and the first gear ring 422 will synchronously rotate a number of screw barrels 431 through the first bevel gear and the first bevel gear ring, and after the sliding rod 433 limits the moving direction of the first screw rod 432, the screw barrel 431 cooperates with the first screw rod 432 to make the surrounding arc-shaped abutment plates 434 synchronously approach the outer ring wall of the steel pipe pile until the surrounding arc-shaped abutment plates 434 are squeezed to the outer ring wall of the steel pipe pile, at this time, the ball 435 will contact the outer ring wall of the steel pipe pile to reduce the friction when the steel pipe pile moves up and down, so as to complete the annular rolling pressure on the outer ring wall of the steel pipe pile before static pressure reinforcement, and the annular rolling pressure can evenly apply pressure, so that the steel pipe pile is more stable during the pressing process, and the risk of deflection and tilt is reduced.

[0034] See also Figure 1 , Figure 2 , Figure 4 and Figure 5The bearing part 51 includes a lead screw 511, a triangular bearing plate 512, a guide rod 513, a locking hole 514 and an equipment groove 515. The lead screw 511 is installed in the vertical slide rail 2 through a bearing. The triangular bearing plate 512 threadedly connected to the lead screw 511 is slidably installed in the vertical slide rail 2. A guide rod 513 located at the first limiting hole 412 is fixedly installed on the upper end surface of the circular base 1. The upper end of the guide rod 513 slides through the triangular bearing plate 512. A plurality of locking holes 514 are penetrated from top to bottom in a linear array on the outer ring wall of the guide rod 513. An equipment groove 515 coaxial with the through pile hole 411 is opened at the center of the upper end surface of the triangular bearing plate 512, and a triangular support plate is fixedly installed on the upper ends of the guide rods 513.

[0035] See also Figure 1 , Figure 4 and Figure 5 The hydraulic unit 52 includes a hydraulic cylinder 521 and a circular pressure plate 522 . The hydraulic cylinder 521 is fixedly mounted on the lower end surface of the triangular bearing plate 512 , and the circular pressure plate 522 is fixedly mounted on the telescopic end of the hydraulic cylinder 521 .

[0036] See also Figure 1 and Figure 4 The driving part 53 includes a center column 531, a motor 532 and a second gear ring 533. The center column 531 is fixedly installed at the center of the equipment slot 515, and the motor 532 is fixedly installed on the center column 531. A second gear is fixedly sleeved on the output end of the motor 532. The second gear ring 533 meshing with the second gear is installed on the lower end surface of the equipment slot 515 through a bearing.

[0037] See also Figure 1 and Figure 4 The locking portion 54 includes a limiting slide 541, a second screw 542, a slider 543 and a locking rod 544. The upper end surface of the triangular bearing plate 512 is provided with a limiting slide 541 located at the vertical line thereof and close to the corresponding angle. A second screw 542 penetrating the outer ring wall of the equipment groove 515 is installed in the limiting slide 541 through a bearing. A second bevel gear located in the equipment groove 515 is fixedly sleeved on the second screw 542. A second bevel gear ring meshing with a plurality of second bevel gears is fixedly installed on the upper end surface of the second gear ring 533. A slider 543 threadedly connected to the second screw 542 is slidably installed in the limiting slide 541. A locking rod 544 plugged in and matched with the corresponding locking hole 514 is fixedly installed on the upper end of the slider 543. The triangular bearing plate 512, the triangular fixing plate 3 and the triangular supporting plate are equilateral triangles.

[0038] During specific operation, after the pile fixing mechanism 4 completes the pressing of the steel pipe pile, the external motor is started to rotate the lead screw 511, thereby controlling the triangular bearing plate 512 to move up and down. When the triangular bearing plate 512 moves to the point where the circular pressure plate 522 fits the upper end surface of the steel pipe pile, the external motor can be stopped.

[0039] Then, the motor 532 is started to rotate the second gear ring 533 through the second gear, and the second gear ring 533 will rotate synchronously with all the second screws 542 through the cooperation of the second bevel gear and the second bevel gear ring, so that all the sliders 543 can be driven to carry the corresponding locking rods 544 away from the center column 531 synchronously until the locking rods 544 are simultaneously inserted into the corresponding locking holes 514, thereby completing the fixation of the triangular bearing plate 512.

[0040] At this time, the fixed triangular bearing plate 512, the triangular fixing plate 3 below and the triangular supporting plate above provide triangular plane support at the top, middle and bottom for the static pressure reinforced steel pipe pile, so that the three support points at the top, middle and bottom form a stable structure, further maintaining the verticality of the steel pipe pile, and greatly reducing the risk of deflection and tilting of the steel pipe pile during the pressing process.

[0041] Then, the hydraulic cylinder 521 is started so that its telescopic end brings the circular pressure plate 522 to squeeze the steel pipe pile downward, and when the telescopic end of the hydraulic cylinder 521 moves to the maximum distance, the hydraulic cylinder 521 is started in the reverse direction to retract the circular pressure plate 522, and then the motor 532 is started in the reverse direction to pull out the locking rod 544, thereby releasing the fixation of the triangular bearing plate 512, and then the height of the triangular bearing plate 512 can be adjusted again through the bearing part 51, so that the circular pressure plate 522 is again fitted with the upper end surface of the steel pipe pile, and then the above operation can be repeated to complete the static pressure reinforcement of a steel pipe pile.

[0042] See also Figure 1 , Figure 2 and Figure 5 The support portion 61 includes an alignment groove 611, a fixing ring 612, a support seat 613 and a telescopic rod 614. The upper end surface of the triangular bearing plate 512 is provided with an alignment groove 611 located at the vertical line thereof and away from the corresponding angle. The upper end of the central column 531 is fixedly sleeved with a fixing ring 612, and the fixing ring 612 is hinged with a telescopic rod 614 corresponding to the alignment groove 611 one by one. The lower end of the telescopic rod 614 is hinged with a support seat 613 fixedly connected to the upper end surface of the circular base 1.

[0043] See also Figure 1 and Figure 5 The fixing part 62 includes an electric push rod 621 and an extrusion plate 622. The lower end of the triangular bearing plate 512 is fixedly installed with an electric push rod 621 corresponding to the alignment groove 611 one by one. The telescopic end of the electric push rod 621 is fixedly installed with an extrusion plate 622 for extruding the telescopic rod 614 on the side wall of the alignment groove 611.

[0044] During specific operation, after the static pressure mechanism 5 fixes the triangular bearing plate 512, the electric push rod 621 is started at the same time to extend the extrusion plate 622 on its telescopic end, thereby squeezing the telescopic rod 614 onto the side wall of the alignment groove 611, and the force-bearing plate corresponding to the extrusion plate 622 arranged on the side wall of the alignment groove 611 will always fit the other side of the telescopic rod 614, thereby providing support for the other side of the telescopic rod 614, thereby fixing the telescopic rod 614. At this time, the three telescopic rods 614 will provide triangular pyramid support for the hydraulic cylinder 521 on the triangular bearing plate 512, so that the triangular pyramid structure provides three stable support points for the hydraulic cylinder 521, forming a solid triangular foundation, which greatly enhances the stability of the hydraulic cylinder 521 and makes the steel pipe pile more evenly stressed.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge pile foundation construction equipment, comprising a circular base, characterized in that: The upper end surface of the circular base is fixedly mounted with a vertical slide rail, the upper end surface of the circular base is fixedly mounted with a triangular fixing plate located in front of the vertical slide rail, and the triangular fixing plate is provided with a stake fixing mechanism; The pile fixing mechanism comprises a limiting part arranged on the triangular fixing plate, the limiting part is provided with a rotating part and a pressing part for cooperating with the rotating part to perform annular rolling pressing on the side wall of the steel pipe pile; The vertical slide rail and the circular base are provided with a static pressure mechanism for cooperating with the pile fixing mechanism to implement static pressure reinforcement on the steel pipe piles; The static pressure mechanism includes a bearing part arranged on the vertical slide rail and used to automatically adjust the height of the static pressure steel pipe pile. The limiting part cooperates with the bearing part to provide triangular plane support at three locations, namely, the upper, middle and lower, for the static pressure reinforcement steel pipe pile. The bearing part is provided with a hydraulic part and a driving part. The bearing part is also provided with a locking part for cooperating with the driving part to automatically lock the bearing part. The bearing part and the circular base are provided with a supporting mechanism for providing triangular pyramid support for the bearing part during the process of the hydraulic unit implementing static pressure reinforcement of the steel pipe pile; The supporting mechanism comprises a supporting portion arranged on the bearing portion, and the bearing portion is also provided with a fixing portion for fixing the supporting portion; The bearing part includes a triangular bearing plate, a guide rod, and an equipment slot. The triangular bearing plate is slidably installed in the vertical slide rail. An equipment slot coaxial with the pile hole is opened at the center of the upper end surface of the triangular bearing plate. A guide rod located at the first limit hole is fixedly installed on the upper end surface of the circular base. The upper end of the guide rod slides through the triangular bearing plate, and the upper ends of the guide rods are jointly fixedly installed with a triangular support plate; The driving part includes a center column, and the center of the equipment slot is fixedly mounted with the center column; The support part includes an alignment groove, a fixing ring, a support seat and a telescopic rod. The upper end surface of the triangular bearing plate is provided with an alignment groove located at the vertical line and away from the corresponding angle. The upper end of the central column is fixedly sleeved with a fixing ring, and the fixing ring is hinged with a telescopic rod corresponding to the alignment groove one by one. The lower end of the telescopic rod is hinged with a support seat fixedly connected to the upper end surface of the circular base; The limiting portion includes a first limiting hole, and the upper surface of the triangular fixing plate is penetrated by a first limiting hole located at the vertical line thereof and close to the corresponding angle; The triangular bearing plate, the triangular fixing plate and the triangular supporting plate are equilateral triangles.

2. A bridge pile foundation construction equipment according to claim 1, characterized in that: The limiting part includes a pile through hole and a limiting cavity. The upper end surface of the triangular fixing plate is penetrated with a pile through hole coaxial with its inscribed circle, and the triangular fixing plate is provided with a limiting cavity located outside the pile through hole.

3. A bridge pile foundation construction equipment according to claim 2, characterized in that: The rotating part includes a rotating rod and a first gear ring. The first gear ring is installed on the lower end surface of the limiting cavity through a bearing. The rotating rod is installed on the upper end surface of the triangular fixed plate through a bearing. The rotating rod is fixedly sleeved with a first gear meshing with the first gear ring.

4. The bridge pile foundation construction equipment according to claim 2, characterized in that: The pressing part includes a screw barrel, a first screw, a sliding rod, an arc-shaped resistance plate and a ball bearing, wherein a plurality of screw barrels penetrating the inner ring wall of the through-pile hole are installed in the limiting cavity in a circumferential array manner through bearings, a first bevel gear located in the limiting cavity is fixedly sleeved on the screw barrel, a first bevel gear ring meshingly connected to the plurality of first bevel gears is fixedly installed on the upper end surface of the first gear ring, a first screw rod corresponding to the screw barrel is slidably penetrated and installed on the triangular fixed plate, the first screw is threadedly connected to the corresponding screw barrel, a sliding rod corresponding to the first screw and located above the first screw is slidably penetrated and installed on the triangular fixed plate, a connecting plate is fixedly installed at one end of the same group of sliding rods distributed up and down and the first screw away from the triangular fixed plate, and a arc-shaped resistance plate located in the through-pile hole is fixedly installed at the other end of the same group of sliding rods distributed up and down and the first screw, and a plurality of balls are distributed in an array manner on one side wall of the arc-shaped resistance plate close to each other.

5. The bridge pile foundation construction equipment according to claim 2, characterized in that: The bearing part includes a lead screw and a lock hole. The lead screw is installed in the vertical slide rail through a bearing. A triangular bearing plate connected to the lead screw thread is slidably installed in the vertical slide rail. A plurality of lock holes are opened in a linear array through the outer ring wall of the guide rod from top to bottom.

6. The bridge pile foundation construction equipment according to claim 5, characterized in that: The hydraulic unit comprises a hydraulic cylinder and a circular pressure plate. The hydraulic cylinder is fixedly mounted on the lower end surface of the triangular bearing plate, and the circular pressure plate is fixedly mounted on the telescopic end of the hydraulic cylinder.

7. The bridge pile foundation construction equipment according to claim 5, characterized in that: The driving part includes a motor and a second gear ring. The motor is fixedly mounted on the central column. A second gear is fixedly sleeved on the output end of the motor. The lower end surface of the equipment slot is mounted with a second gear ring meshing with the second gear through a bearing.

8. The bridge pile foundation construction equipment according to claim 5, characterized in that: The locking part includes a limiting slide, a second screw, a slider and a locking rod. The upper end surface of the triangular bearing plate is provided with a limiting slide located at the vertical line and close to the corresponding angle. A second screw that passes through the outer ring wall of the equipment groove is installed in the limiting slide through a bearing. A second bevel gear located in the equipment groove is fixedly sleeved on the second screw. A second bevel gear ring that is meshed with a plurality of second bevel gears is fixedly installed on the upper end surface of the second gear ring. A slider threadedly connected to the second screw is slidably installed in the limiting slide. A locking rod that is plugged into and cooperates with the corresponding lock hole is fixedly installed on the upper end of the slider.

9. The bridge pile foundation construction equipment according to claim 1, characterized in that: The fixing part includes an electric push rod and an extrusion plate. The lower end of the triangular bearing plate is fixedly installed with an electric push rod corresponding to the alignment groove one by one. The telescopic end of the electric push rod is fixedly installed with an extrusion plate for extruding the telescopic rod on the side wall of the alignment groove.

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