阅读说明：本技术 一种液压抱桩器 (Hydraulic pile gripper ) 是由 刘玉霞 闻卫东 段国平 陶雷 杨路 于 2020-12-08 设计创作，主要内容包括：一种液压抱桩器,包括具有上轴座、半轴盖和下耳板的抱桩座、具有臂耳板、隔圈和多个导向块的夹持臂、夹持油缸,及立柱单元；抱桩座固装于立柱单元正面的二个主弦杆上；上轴座沿抱桩座中心对称设置于其上方的左右二侧；半轴盖固装于上轴座上；夹持臂为U型结构；导向块分别设置于二个伸出端头部和内弧面处；臂耳板垂直设置于夹持臂底部；夹持臂置于二个上轴座的半圆通孔内,隔圈分别位于上轴座外侧,上轴座分别固装于半轴盖上；夹持油缸的缸筒耳座与抱桩座的下耳板铰接,活塞杆接叉与臂耳板铰接。本发明通过夹持油缸伸缩控制夹持臂的上翻和放下,有利于预制桩在桩架立柱上吊运就位及沉桩导向,保证沉桩施工质量,有效提高沉桩作业效率。(A hydraulic pile gripper comprises a pile gripping seat, a clamping arm, a clamping oil cylinder and a stand column unit, wherein the pile gripping seat is provided with an upper shaft seat, a half shaft cover and a lower lug plate; the pile embracing seat is fixedly arranged on the two main chords on the front surface of the upright post unit; the upper shaft seats are symmetrically arranged on the left side and the right side above the pile embracing seat along the center of the pile embracing seat; the half-axle cover is fixedly arranged on the upper axle seat; the clamping arm is of a U-shaped structure; the guide blocks are respectively arranged at the head parts of the two extending ends and the inner cambered surface; the arm ear plate is vertically arranged at the bottom of the clamping arm; the clamping arms are arranged in the semicircular through holes of the two upper shaft seats, the space rings are respectively positioned at the outer sides of the upper shaft seats, and the upper shaft seats are respectively and fixedly arranged on the half shaft covers; the cylinder barrel ear seat of the clamping oil cylinder is hinged with the lower ear plate of the pile embracing seat, and the piston rod connecting fork is hinged with the arm ear plate. The invention controls the upward turning and the downward putting of the clamping arm through the expansion of the clamping oil cylinder, is beneficial to hoisting and positioning the precast pile on the pile frame upright post and guiding the pile sinking, ensures the pile sinking construction quality and effectively improves the pile sinking operation efficiency.)

1. A hydraulic pile embracing device comprises a pile embracing seat (70) provided with an upper shaft seat (701), a half shaft cover (702) and a lower lug plate (703), a clamping arm (71) provided with an arm lug plate (711), a space ring (714) and a plurality of guide blocks (713), a clamping oil cylinder (72) and a stand column unit (10) provided with four main chords (101);

the method is characterized in that:

the upright column unit (10) is a semi-open type framework body; the four main chords (101) are arranged at four corners of the upright column unit (10) along the vertical direction of the upright column unit; transverse web members and inclined web members are respectively arranged between the left main chord (101), the right main chord (101) and the back main chord (101) of the upright column unit (10) at intervals;

the pile embracing seat (70) is fixedly arranged on the two main chords (101) on the front surface of the upright post unit (10) through screws respectively; the upper shaft seat (701) is provided with a semicircular through hole (7011) which is symmetrically arranged on the left side and the right side above the front surface of the pile embracing seat (70) along the center of the pile embracing seat; the semi-axis cover (702) is provided with a semi-circular hole (7021) and is fixedly arranged on each upper axis seat (701); after the semi-shaft cover (702) is fixedly arranged on the upper shaft seat (701), the semi-circular through hole (7011) and the semi-circular hole (7021) are butted to form a shaft seat through hole (704);

the clamping arm (71) is of a U-shaped structure; the guide blocks (713) are respectively arranged at the two extending end heads and the inner cambered surface of the clamping arm (71); the arm ear plate (711) is vertically arranged at the center of the bottom of the clamping arm (71); the spacing rings (714) are respectively and symmetrically arranged on the bottom outer ring (712) of the clamping arm (71); the clamping arm (71) is arranged in semicircular through holes (7011) of two upper shaft seats (701) of the pile clamping seat (70) through a bottom outer ring (712), the two spacing rings (714) are respectively positioned at the outer sides of the two upper shaft seats (701) of the pile clamping seat (70), and the upper shaft seats (701) are respectively and fixedly arranged on a semi-shaft cover (702);

a cylinder barrel ear seat (721) of the clamping and clamping oil cylinder (72) is hinged with a lower ear plate (703) of the pile embracing seat (70), and a piston rod connecting fork (722) of the cylinder barrel ear seat is hinged with an arm ear plate (711) of the clamping arm (71); in this way, the clamping arm (71) rotates in the shaft seat through hole (704) by means of contraction and extension of the clamping oil cylinder (72), and the upturning and lowering actions of the clamping arm (71) are realized.

2. The hydraulic pile embracing device according to claim 1, wherein the semicircular through hole (7011) of the upper shaft seat (701) of the pile embracing seat (70) and the semicircular hole (7021) of the half shaft cover (702) are provided with semicircular bushings (77) which are made of nodular cast iron.

3. A hydraulic pile embracing device according to claim 1, wherein said guide block (713) is screwed by its lower thread to screw holes at the head and intrados of the holding arm (71), and their extension is adjusted by screwing its thread into the screw holes at different depths to accommodate holding, supporting and guiding of precast piles of different outer diameters.

Technical Field

The invention relates to the technical field of engineering piling, in particular to a hydraulic pile gripper which is suitable for hammering pile sinking operation of a precast pile by a pile frame of a semi-open type upright post.

Background

The scale of the highway, the high-speed railway and the elevated road which are important traffic engineering is gradually enlarged, and when the construction of the bridge engineering is involved in the construction process of the highway, the high-speed railway and the elevated road in the prior art, a movable bridge girder erection machine is generally adopted to movably lay precast beam plates on a finished pile foundation. The pile foundation can adopt a construction method that a diesel pile hammer is used for hammering and sinking the precast pile, so that a pile driving frame, large-scale hoisting equipment and a lightering vehicle are required to be configured in the construction process, the construction engineering cost is greatly increased, and great invariance factors are brought to construction management, equipment management and construction progress. Therefore, the multifunctional all-in-one machine for bridging and piling is required to be constructed, the bridge girder erection machine is required to be provided with the pile driving frame, the upright post of the bridge girder erection machine can adapt to forward-turning vertical and backward-leaning laying down operation, the diesel hammer is arranged on the upright post guide rail of the pile driving frame through the guide plates on the two sides of the diesel hammer, and one end of the precast pile is sleeved in the pile cap below the diesel hammer. When the upright post is laid down by leaning backwards, the diesel hammer and the precast pile are firmly connected by the steel wire rope and cannot fall down; but the precast pile cannot be guided and fixed to shake in the process of forward-turning and erecting the upright column, so that great potential safety hazards exist. When the stand was completely vertical when carrying out the pile sinking operation, the precast pile can cause pile sinking stability to receive the influence because of it does not obtain effectual direction support, has the potential safety hazard throughout at the pile sinking in-process of whole precast pile, brings very big influence to construction quality, reduces pile sinking operating efficiency by a wide margin. Therefore, a pile holding device which meets the requirements of the lifting and the positioning of the precast pile and the guiding and supporting in the pile sinking process needs to be developed.

Disclosure of Invention

In order to solve the technical problem, the invention provides a hydraulic pile gripper which is arranged on the side surfaces of two main chords of a semi-open type upright unit and controls a clamping arm to turn up and down by virtue of the telescopic motion of a piston rod of a clamping oil cylinder; the extending distance of the two extending end heads and the guide block at the inner cambered surface of the clamping arm is adjusted to meet the pile driving guide supporting requirements of precast piles with different pile diameters, so that the pile sinking construction quality is effectively ensured, and the pile sinking operation efficiency is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a hydraulic pile gripper comprises a pile gripping seat with an upper shaft seat, a half shaft cover and a lower lug plate, a clamping arm with an arm lug plate, a space ring and a plurality of guide blocks, a clamping oil cylinder and an upright unit with four main chords;

the method is characterized in that:

the upright column unit is a semi-open type framework structure body; the four main chords are arranged at four corners of the upright column unit along the vertical direction of the upright column unit; transverse web members and inclined web members are arranged between the left main chord member, the right main chord member and the back main chord member of the upright column unit at intervals respectively;

the pile embracing seats are fixedly arranged on the two main chords on the front surface of the upright post unit through screws respectively; the upper shaft seat is provided with a semicircular through hole and is symmetrically arranged on the left side and the right side above the front surface of the pile holding seat along the center of the pile holding seat; the half shaft cover is provided with a semicircular hole and is fixedly arranged on each upper shaft seat; after the semi-axis cover is fixedly arranged on the upper axis seat, the semi-circular through hole and the semi-circular hole are butted to form an axis seat through hole;

the clamping arm is of a U-shaped structure; the guide blocks are respectively arranged at the two extending end heads and the inner cambered surface of the clamping arm; the arm ear plate is vertically arranged at the center of the bottom of the clamping arm; the spacing rings are respectively and symmetrically arranged on the outer rings at the bottoms of the clamping arms; the clamping arm is arranged in semicircular through holes of two upper shaft seats of the pile clamping seat through the outer ring at the bottom, the two space rings are respectively positioned at the outer sides of the two upper shaft seats of the pile clamping seat, and the upper shaft seats are respectively and fixedly arranged on the half shaft cover;

a cylinder barrel lug seat of the clamping oil cylinder is hinged with a lower lug plate of the pile embracing seat, and a piston rod connecting fork of the clamping oil cylinder is hinged with an arm lug plate of the clamping arm; therefore, the clamping arm rotates in the shaft seat through hole by means of the contraction and extension of the clamping oil cylinder, and the upward turning and the falling actions of the clamping arm are realized.

The semicircular through holes of the upper shaft seat of the pile embracing seat and the semicircular holes of the semicircular shaft cover are respectively provided with a semicircular lining, and the semicircular lining and the semicircular through holes are all made of nodular cast iron materials.

The guide block can be screwed in screw holes at the head part and the inner arc surface of the clamping arm through the lower threads of the guide block, and the extension lengths of the guide block and the screw holes are adjusted through different depths of screwing the threads into the screw holes so as to be suitable for clamping, supporting and guiding the precast piles with different outer diameters.

Drawings

The invention is further described below with reference to the following figures and examples:

FIG. 1 is a schematic view of the clamp arm of the hydraulic pile gripper of the present invention in a lowered configuration;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a left side view detail of FIG. 1;

FIG. 4 is a schematic structural view of the present invention with the clamp arm flipped up;

FIG. 5 is a top view of FIG. 4;

FIG. 6 is a left side view detail of FIG. 4;

fig. 7 is a partial sectional view taken along line a-a in fig. 5.

Detailed Description

As shown in fig. 1 to 7, the oil hydraulic pole embracing device comprises a pole embracing base 70 with an upper shaft seat 701, a half shaft cover 702 and a lower lug plate 703, a clamping arm 71 with an arm lug plate 711, a spacer ring 714 and a plurality of guide blocks 713, a clamping oil cylinder 72 and a column unit 10 with four main chords 101; wherein:

the upright unit 10 is a semi-open type framework structure body; the four main chords 101 are arranged at four corners of the column unit 10 in the vertical direction thereof; transverse web members and inclined web members are respectively arranged between the two main chords 101 on the left, right and back sides of the upright column unit 10 at intervals;

the pile embracing seat 70 is fixedly arranged on the two main chords 101 on the front surface of the upright post unit 10 through screws respectively; the upper shaft seat 701 is provided with a semicircular through hole 7011 which is symmetrically arranged on the left side and the right side above the front surface of the pile embracing seat 70 along the center of the pile embracing seat; the half-axle cover 702 is provided with a half-axle hole 7021 and is fixedly arranged on each upper axle seat 701; after the half shaft cover 702 is fixedly installed on the upper shaft seat 701, the half circular through hole 7011 and the half circular hole 7021 are butted to form a shaft seat through hole 704. The semicircular through hole 7011 of the upper shaft seat 701 of the pile embracing seat 70 and the semicircular hole 7021 of the half shaft cover 702 are both provided with semicircular bushings 77 which are all made of nodular cast iron. When the abrasion of the semicircular bush 77 exceeds the limit size, the semicircular bush can be conveniently replaced, and the use cost of the equipment is effectively reduced.

The clamping arm 71 is of a U-shaped structure; the guide blocks 713 are respectively arranged at the two extending end heads and the inner cambered surfaces of the clamping arm 71; the guide block 713 is screwed into screw holes at the head part and the inner arc surface of the clamping arm 71 through lower threads of the guide block, and the extension lengths of the guide block 713 are adjusted through different depths of screwing the threads into the screw holes so as to be suitable for clamping, supporting and guiding precast piles with different outer diameters. The arm lug 711 is vertically disposed at the center of the bottom of the clamp arm 71; the spacing rings 714 are respectively and symmetrically arranged on the bottom outer ring 712 of the clamping arm 71; the clamping arm 71 is arranged in the semicircular through holes 7011 of the two upper shaft seats 701 of the pile clamping seat 70 through the bottom outer ring 712, the two spacing rings 714 are respectively positioned at the outer sides of the two upper shaft seats 701 of the pile clamping seat 70, and the upper shaft seats 701 are respectively and fixedly arranged on the half shaft cover 702.

A cylinder barrel ear seat 721 of the clamping oil cylinder 72 is hinged with a lower ear plate 703 of the pile embracing seat 70, and a piston rod connecting fork 722 of the clamping oil cylinder is hinged with an arm ear plate 711 of the clamping arm 71; in this way, the clamping arm 71 rotates in the shaft seat through hole 704 by means of the contraction and extension of the clamping cylinder 72, so that the upturning and the lowering actions of the clamping arm 71 are realized.

When the clamping oil cylinder 72 is operated to contract the piston rod, the piston rod connecting fork 722 pulls the arm lug plate 711 of the clamping arm 71, so that the clamping arm 71 is turned upwards, the precast pile conveniently enters the inner cavity of the lower upright unit of the external pile frame, and the precast pile is hoisted and positioned. When the upright post of the external pile frame is completely turned forward and erected and the diesel hammer starts pile sinking operation, and the clamping oil cylinder 72 is operated to extend the piston rod, the piston rod connecting fork 722 pushes the arm lug plate 711 of the clamping arm 71 to enable the clamping arm 71 to be put down, so that the plurality of guide blocks 713 positioned at the two extending end parts and the inner arc surface of the clamping arm 71 are supported on the outer circumferential surface of the precast pile, the precast pile is guided and supported all the time in the pile sinking process of the diesel hammer, and the pile sinking construction quality is ensured.

The hydraulic pile embracing device is arranged on the side surfaces of two main chords of a semi-open type upright post unit, and controls a clamping arm to turn up and put down by virtue of the telescopic motion of a piston rod of a clamping oil cylinder; the pile driving guide device is beneficial to lifting and positioning of precast piles and pile driving support guide, and can meet the pile driving guide support requirements of precast piles with different pile diameters by adjusting the extending positions of the two extending end heads and the guide block at the inner cambered surface of the clamping arm, thereby effectively ensuring the pile driving construction quality and improving the pile driving operation efficiency.