阅读说明：本技术 一种拔桩液压夹头 (Pile pulling hydraulic chuck ) 是由 徐本春 刘德风 董洋泱 黄泽 于 2019-08-29 设计创作，主要内容包括：本发明公开了一种拔桩液压夹头,包括主支架、所述主支架包括拉头,方形连接块以及连接条,主支架的顶部设有拉头,所述主支架的下方依次设有若干个方形连接块,所述方形连接块彼此之间通过连接条连接,最上端的方形连接块固定在所述拉头的末端,所述连接条设置在方形连接块的四个侧面,所述方形连接块上设有等间距均匀分布的若干液压缸安装座,所述液压缸安装座上设有安装孔,所述液压缸安装座上安装孔所在的端面相对于连接条倾斜设置,所述安装孔内固定安装夹手。本发明能够通过液压缸实现自动夹紧桩,液压缸的缸杆伸出方向与压头背面夹角45度,液压缸的受力基本在缸杆轴向上,提高了工作效率。(The invention discloses a pile pulling hydraulic chuck which comprises a main support, wherein the main support comprises a pull head, square connecting blocks and connecting strips, the top of the main support is provided with the pull head, a plurality of square connecting blocks are sequentially arranged below the main support, the square connecting blocks are connected with one another through the connecting strips, the square connecting block at the uppermost end is fixed at the tail end of the pull head, the connecting strips are arranged on four side surfaces of the square connecting blocks, a plurality of hydraulic cylinder mounting seats which are uniformly distributed at equal intervals are arranged on the square connecting blocks, mounting holes are formed in the hydraulic cylinder mounting seats, the end surfaces where the mounting holes are formed in the hydraulic cylinder mounting seats are obliquely arranged relative to the connecting strips, and the clamping hands are fixedly arranged in the mounting. According to the invention, automatic pile clamping can be realized through the hydraulic cylinder, the included angle between the extending direction of the cylinder rod of the hydraulic cylinder and the back of the pressure head is 45 degrees, the stress of the hydraulic cylinder is basically in the axial direction of the cylinder rod, and the working efficiency is improved.)

1. The utility model provides a pile pulling hydraulic chuck which characterized in that: including the main support includes the pull head, square connecting block and connecting strip, and the top of main support is equipped with the pull head, the below of main support is equipped with the square connecting block of a plurality of in proper order, square connecting block connects through the connecting strip each other, and the square connecting block of top is fixed the end of pull head, the connecting strip sets up four sides at square connecting block, be equipped with equidistant evenly distributed's a plurality of pneumatic cylinder mount pads on the square connecting block, be equipped with the mounting hole on the pneumatic cylinder mount pad, the terminal surface at mounting hole place sets up for the connecting strip slope on the pneumatic cylinder mount pad, fixed mounting tong in the mounting hole.

2. A pile pulling hydraulic collet as defined in claim 1, wherein: the tong includes pneumatic cylinder, connecting rod, connecting axle and pressure head, pneumatic cylinder fixed mounting is in the mounting hole, and the front end orientation of pneumatic cylinder square connecting block is inboard, the front end fixed connection connecting rod of pneumatic cylinder, the front end and the pressure head of connecting rod pass through the connecting axle and articulate.

3. A pile pulling hydraulic collet as defined in claim 2, wherein: the pressure head includes the arc, be equipped with two parallel arrangement's otic placode on the arc back, be equipped with first through-hole on the otic placode, be equipped with the second through-hole that runs through both sides on the connecting rod, the front end of connecting rod is installed between two parallel arrangement's otic placodes, and the connecting axle runs through first through-hole and second through-hole are articulated with pressure head and connecting rod.

4. a pile pulling hydraulic collet as defined in claim 3, wherein: and a circular bulge is arranged between the ear plates.

5. a pile pulling hydraulic collet as defined in claim 4, wherein: the circular bulge is made of rubber.

6. A pile pulling hydraulic collet as defined in claim 3, wherein: the front of the arc-shaped plate is provided with concave grains.

7. A pile pulling hydraulic collet as defined in claim 1, wherein: the pull head comprises two vertical plates arranged in parallel and a parallel plate connected between the top ends of the two vertical plates, and the square connecting block at the uppermost end is fixed at the tail ends of the two vertical plates.

8. a pile pulling hydraulic collet as defined in claim 1, wherein: the end face where the mounting hole is located on the hydraulic cylinder mounting seat is inclined by 45 degrees relative to the connecting strip.

Technical Field

The invention relates to the technical field of pile pulling equipment, in particular to a pile pulling hydraulic chuck.

Background

with the development of society, more and more capital construction projects are provided, and particularly in a temporary construction system of a bridge, pile pulling operation is required to be performed. Pile pulling is a construction method for pulling out a pile from a stratum by utilizing vibration, static force or hammering action, the existing pile pulling equipment is mainly divided into two types of hanging pulling type pile pulling and ground holding force pile pulling, however, no matter which type, a clamp is needed to clamp the pile in the pile pulling process, and the pile can be effectively pulled out only when the clamping position is accurate during pile pulling. In the current common construction method, pile pulling operation mainly adopts manual pile clamping, the working efficiency is low, the existing device with the function of automatically clamping the pile has the defects of large occupied space, complex installation and the like, and pile pulling construction operation under a bridge is not easy to carry out.

disclosure of Invention

The invention aims to provide a pile pulling hydraulic chuck which is mainly used for automatically clamping a pile in a pile pulling process.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a pile pulling hydraulic chuck which characterized in that: including the main support includes the pull head, square connecting block and connecting strip, and the top of main support is equipped with the pull head, the below of main support is equipped with the square connecting block of a plurality of in proper order, square connecting block connects through the connecting strip each other, and the square connecting block of top is fixed the end of pull head, the connecting strip sets up four sides at square connecting block, be equipped with equidistant evenly distributed's a plurality of pneumatic cylinder mount pads on the square connecting block, be equipped with the mounting hole on the pneumatic cylinder mount pad, the terminal surface at mounting hole place sets up for the connecting strip slope on the pneumatic cylinder mount pad, fixed mounting tong in the mounting hole.

Further, the tong includes pneumatic cylinder, connecting rod, connecting axle and pressure head, pneumatic cylinder fixed mounting is in the mounting hole, and the front end orientation of pneumatic cylinder square connecting block is inboard, the front end fixed connection connecting rod of pneumatic cylinder, the front end and the pressure head of connecting rod pass through the connecting axle and articulate.

Further, the pressure head includes the arc, be equipped with two parallel arrangement's otic placode on the arc back, be equipped with first through-hole on the otic placode, be equipped with the second through-hole that runs through both sides on the connecting rod, the front end of connecting rod is installed between two parallel arrangement's otic placodes, and the connecting axle runs through first through-hole and second through-hole are articulated with pressure head and connecting rod.

Furthermore, a circular bulge is arranged between the ear plates.

Further, the circular protrusion is made of rubber.

Furthermore, the front of the arc-shaped plate is provided with concave grains.

Further, the pull head comprises two vertical plates arranged in parallel and a parallel plate connected between the top ends of the two vertical plates, and the square connecting block at the uppermost end is fixed at the tail ends of the two vertical plates.

Furthermore, the end face where the mounting hole is located on the hydraulic cylinder mounting seat is inclined by 45 degrees relative to the connecting strip.

Compared with the prior art, the invention at least comprises the following beneficial effects:

1. the pile to be pulled out can be automatically clamped from four sides simultaneously, and the pile to be pulled out can also be automatically clamped from two opposite sides simultaneously;

2. When the surface of the pile to be pulled out is uneven, the pressure head can rotate passively, so that the pressure head can well press the surface of the pile to be pulled out, and the concave grains are arranged on the front surface of the pressure head, so that the friction coefficient between the pressure head and the pile to be pulled out is high.

3. When the pile pulling device works, the included angle between the extending direction of the cylinder rod of the hydraulic cylinder and the back of the pressure head is 45 degrees, the stress of the hydraulic cylinder is basically in the axial direction of the cylinder rod, and the pile pulling efficiency of the hydraulic cylinder is higher;

4. The pile can be automatically clamped through the hydraulic cylinder, so that the working efficiency is improved;

5. The hydraulic cylinder mounting positions are uniformly distributed on the periphery of the main support, the hydraulic cylinders can be flexibly arranged according to the length, the shape and the like of the pile to be pulled, and the arrangement of the hydraulic cylinders is generally two corresponding arrangements.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a schematic view of a main support structure of the present invention;

FIG. 4 is a schematic view of the structure of the gripper of the present invention;

FIG. 5 is an exploded view of a gripper according to the present invention;

In the figure: 10-a main support; 11-slider, 111-vertical plate, 112-horizontal plate; 12-square connecting blocks, 13-connecting strips, 14-hydraulic cylinder mounting seats, 15-mounting holes and 20-clamping hands; 21-hydraulic cylinder, 22-connecting rod, 221-second through hole; 23-connecting shaft, 24-pressure head, 241-arc plate, 242-ear plate, 243-first through hole, 244-circular protrusion and 245-concave line.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As shown in fig. 1-5, the embodiment of the present application provides a pile pulling hydraulic chuck, including main support 10, main support 10 includes pull head 11, square connecting block 12 and connecting strip 13, and the top of main support 10 is equipped with pull head 11, the below of main support 10 is equipped with the square connecting block 12 of a plurality of in proper order, square connecting block 12 connects through connecting strip 13 each other, and the square connecting block 12 of the top is fixed the end of pull head 11, connecting strip 13 sets up four sides at square connecting block 12, be equipped with a plurality of pneumatic cylinder mount pads 14 of equidistant evenly distributed on square connecting block 12, be equipped with mounting hole 15 on the pneumatic cylinder mount pad 14, the terminal surface that mounting hole 15 was located on the pneumatic cylinder mount pad 14 sets up for connecting strip 13 slope, fixed mounting clamp 20 in the mounting hole 15.

In the above embodiment, the pulling head 11, the square connecting block 12 and the connecting strip 13 constitute a main frame, the main frame is hollow inside, so that a pile to be pulled can be conveniently placed between the main frames, the connecting strip 13 is provided with the hydraulic cylinder mounting seat 14, and the hydraulic cylinder 21 and the clamping hand 20 are mounted in the mounting hole 15, so that the pile to be pulled can be clamped simultaneously from four sides of the pile to be pulled.

In a further preferred embodiment, the clamping hand 20 comprises a hydraulic cylinder 21, a connecting rod 22, a connecting shaft 23 and a pressure head 24, the hydraulic cylinder 21 is fixedly installed in the installation hole 15, the front end of the hydraulic cylinder 21 faces the inner side of the square connecting block 12, the front end of the hydraulic cylinder 21 is fixedly connected with the connecting rod 22, and the front end of the connecting rod 22 is hinged to the pressure head 24 through the connecting shaft 23.

In the above embodiment, the connecting rod 22 is hinged to the pressing head 24, and the included angle can be automatically adjusted according to the situation, so that the pressing head 24 can well press the surface of the pile to be pulled, and the best clamping effect can be achieved

In a further preferred embodiment, the pressure head 24 includes an arc plate 241, two parallel ear plates 242 are disposed on the back of the arc plate 241, a first through hole 243 is disposed on the ear plate 242, a second through hole 221 penetrating through both sides is disposed on the connecting rod 22, the front end of the connecting rod 22 is mounted between the two parallel ear plates 242, and the connecting shaft 23 penetrates through the first through hole 243 and the second through hole 221 to hinge the pressure head 24 and the connecting rod 22.

In the above embodiment, the arc plate 241 is adapted to the shape of the outer circumference of the strip pile, so as to further improve the clamping force.

In a further preferred embodiment, a circular protrusion 244 is disposed between the ear plates 242, the circular protrusion 244 is made of rubber, and the front surface of the arc plate 241 is provided with a concave pattern 245.

in the above embodiment, the round protrusion 244 functions to prevent the corner of the ram 24 at the hinge joint with the connecting rod 22 from being too large due to its own weight, which is not favorable for the pile pulling hydraulic collet to cover the pile to be pulled downwards, and the concave pattern 245 can increase the friction coefficient between the ram 24 and the pressed surface.

Further, in the above embodiment, the slider 11 includes two vertical plates 111 disposed in parallel, and a horizontal plate 112 connected between the top ends of the two vertical plates 111, and the uppermost square connecting block 12 is fixed to the distal ends of the two vertical plates 111.

The end face of the hydraulic cylinder mounting seat 14 where the mounting hole 15 is located is inclined by 45 degrees relative to the connecting strip 13.

In the above embodiment, an included angle of 45 degrees is formed between the extending direction of the cylinder rod of the hydraulic cylinder 21 and the back of the pressure head 24, the stress of the hydraulic cylinder 21 is basically in the axial direction of the cylinder rod, the pile pulling efficiency of the hydraulic cylinder 21 is higher, the hydraulic cylinder mounting seats 14 are uniformly distributed on the periphery of the main support 10, the hydraulic cylinder 21 can be flexibly arranged according to the length, the shape and the like of a pile to be pulled, the arrangement of the hydraulic cylinder 21 is generally two corresponding arrangements, for example, when a certain part of the surface of the pile to be pulled appears a bulge or is provided with a bolt and the like, the part is not suitable for being used as a tightening surface, the hydraulic cylinder 21 is not required to be arranged at the corresponding mounting position of the hydraulic cylinder 21 at this time, when the pile to be pulled is easy to be pulled, the.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and the technical contents of the present invention are all described in the claims.